CN105400543B - Blend oil product and preparation method thereof - Google Patents

Abstract

The present invention discloses a blend oil product and preparation method thereof, and belongs to the technical field of petroleum processing. The blend oil product comprises 10-30 parts of a catalytic cracking slurry oil and 70-90 parts of vacuum residuum. The catalytic cracking slurry oil is first heated to blend, then the vacuum residuum is heated, and the catalytic cracking slurry oil and vacuum residuum are mixed and stirred to obtain the product. The blend oil product has good quality, greatly improved viscosity, increased saturates and aromatics content and decreased colloidal stability, is an ideal material for solvent deasphalting, and achieves efficient utilization of catalytic cracking slurry oil.

Description

A kind of blending oil product and preparation method thereof

technical field

The invention belongs to the technical field of petroleum processing, relates to a blended oil product, and also relates to a preparation method of the blended oil product.

Background technique

According to statistics, the output of my country's catalytic cracking oil slurry generally accounts for 5% to 10% of the FCC treatment volume, and the output of my country's catalytic cracking oil slurry has reached 7.5Mt/a. Against the backdrop of increasingly heavy and inferior catalytic raw materials, the output of oil slurry will inevitably increase. At present, catalytic oil slurry is mainly shipped as fuel oil. Although this solution can effectively solve the problem of oil slurry outlet, it has a low utilization rate of oil slurry, a precious resource, and is not the best solution for oil slurry utilization. In the current situation where refining profits are getting thinner and thinner, catalytic oil slurry is one of the few remaining "potential stocks", and exploring its high value-added utilization is of great significance for improving the economics of catalytic devices.

At present, some domestic refining and chemical enterprises have actively explored the comprehensive utilization of catalytic cracking oil slurry, considering blending with vacuum residue oil as raw material for solvent deasphalting equipment, so as to expand the source of raw materials, and at the same time improve the deasphalted oil and deoiled asphalt yield and quality. However, the selection of raw materials and the determination of the component distribution ratio are relatively arbitrary, and there is no clear and suitable range. At the same time, the yield of deasphalted oil does not increase much, which is not conducive to expanding production, and even fails to improve product quality. Yield and quality purposes.

Although vacuum residue and catalytic cracking oil slurry are low-value-added by-products of refinery, they also contain high content of saturated and aromatic components, which can be used as lubricating oil base oil or catalytic cracking raw material after processing. It is one of the best ways to improve its comprehensive utilization value.

Contents of the invention

The purpose of the present invention is to provide a blended oil product, which solves the problems of randomness in oil product proportioning and unstable oil product properties in the prior art.

Another object of the present invention is to provide a method for preparing the above blended oil.

The technical solution adopted in the present invention is that a blended oil product is composed of the following raw materials according to the ratio of parts by mass: 10-30 parts of catalytic cracking oil slurry; 70-90 parts of vacuum residue.

The present invention is also characterized in that further, the catalytic cracking oil slurry contains 20 parts of type A oil slurry, 10 parts of type B oil slurry, and 70 parts of type C oil slurry; in the type A oil slurry, H/C The atomic number ratio is 1.03, in the type A oil slurry, according to the mass percentage, the saturated content is 23.37%, the aromatic content is 64.52%, the colloid is 9.14%, and the asphaltene is 2.97%; the H/C atomic number ratio in the type B oil slurry is 1.10, in the type B oil slurry, according to the mass percentage, the saturated content is 20.8%, the aromatic content is 60.15%, the colloid is 14.59%, and the asphaltene is 4.46%; the H/C atomic number ratio in the type C oil slurry is 1.20, and the According to the mass percentage, in the type C oil slurry, the saturated content is 34.34%, the aromatic content is 56.95%, the colloid is 6.96%, and the asphaltene is 1.75%.

Further, the H/C atomic number ratio in the vacuum residue is 1.49, and the vacuum residue is 22.64% saturated, 50.05% aromatic, 22.72% colloid, and 4.59% asphaltenes in the vacuum residue.

Another technical solution adopted in the present invention is that the preparation method of the blended oil product is carried out according to the following steps:

Step 1, get the raw material;

According to the ratio of mass and number, select 20 parts of A kind of oil slurry, 10 parts of B kind of oil slurry, and 70 parts of C kind of oil slurry;

In type A oil slurry, the H/C atomic number ratio is 1.03, the saturated content is 23.37%, the aromatic content is 64.52%, the colloid is 9.14%, and the asphaltene is 2.97%;

The H/C atomic number ratio in Type B oil slurry is 1.10, according to the mass percentage, the saturated content is 20.8%, the aromatic content is 60.15%, the colloid is 14.59%, and the asphaltenes are 4.46%;

The H/C atomic number ratio in type C oil slurry is 1.20, according to the mass percentage, the saturated content is 34.34%, the aromatic content is 56.95%, the colloid is 6.96%, and the asphaltene is 1.75%;

Then choose the vacuum residue, the H/C atomic number ratio in the vacuum residue is 1.49, according to the mass percentage, the saturated content is 22.64%, the aromatic content is 50.05%, the colloid is 22.72%, and the asphaltenes are 4.59%;

Step 2, blending of catalytic cracking oil slurry;

Take Type A oil slurry, Type B oil slurry, and Type C oil slurry and place them in an oven respectively, and heat them under normal pressure at 90°C for 2-3 hours to make them heated evenly; Slurry, type B oil slurry, and type C oil slurry were prepared to obtain catalytic cracking oil slurry. During the preparation process, a stirrer was used to stir at a speed of 150r/min for 0.5h to make it fully mixed, and then heated in an oven at 90°C for 1.5- 2h;

Step 3, the preparation of the blended oil product;

The vacuum residue is heated at 100°C under normal pressure for 3-4h;

The fully heated catalytic cracking oil slurry and vacuum residue are prepared according to the mass ratio of 10-30 parts of catalytic cracking oil slurry and 90-70 parts of vacuum residue. Stir at rotating speed for 0.5h until fully mixed; after stirring, put the obtained blended oil in an oven, heat at 90°C under normal pressure for 1.5-2h, take it out and stir again with a stirrer at a rotating speed of 150r/min 0.5h to make it evenly mixed, and then cooled, that is.

The beneficial effects of the present invention are:

1. The present invention uses the by-product vacuum residue of the refinery and three different catalytic cracking oil slurries as raw materials, and can obtain better quality oil products through preparation, and realizes the vacuum residue of the refinery and the catalytic cracking oil slurry comprehensive utilization.

2. The blended oil obtained in the present invention can be used as raw material for solvent deasphalting, and can be produced without modification of the device, which expands the raw material source of the solvent deasphalting device.

3. The blended oil product of the present invention has good fluidity and reduced system stability, improves the mass transfer and heat transfer efficiency of the extraction process, and reduces energy consumption.

4. The yield of deasphalted oil after solvent deasphalting of the blended oil prepared by the present invention is significantly higher than that of vacuum residue oil when solvent deasphalted alone, and the properties of the deoiled asphalt obtained are also improved, increasing the Refinery economics.

Description of drawings

Figure 1 is a graph showing the relationship between the viscosity of blended oil and the blending ratio of FCC oil slurry.

Figure 2 is a graph showing the relationship between the density of blended oil and the blending ratio of oil slurry.

Figure 3 is a graph showing the relationship between the carbon residue and metal content of blended oil products and the blending ratio of oil slurry.

Fig. 4 is a graph showing the relationship between hydrogen, sulfur content, H/C ratio and slurry blending ratio of blended oil.

Figure 5 is a graph showing the relationship between the ash content of the blended oil product and the blending ratio of the oil slurry.

Figure 6 is a graph showing the relationship between the four components of the blended oil and the blending ratio of the oil slurry.

Figure 7 is a graph showing the relationship between the colloidal stability of the blended oil and the blending ratio of the oil slurry.

detailed description

The present invention will be described in detail below in combination with specific embodiments.

A blended oil product is composed of the following raw materials according to the ratio of parts by mass:

10-30 parts of catalytic cracking oil slurry; 70-90 parts of vacuum residue.

Among them, the catalytic cracking oil slurry contains 20 parts of type A oil slurry, 10 parts of type B oil slurry, and 70 parts of type C oil slurry.

More specifically, the H/C atomic number ratio in Type A oil slurry is 1.03, the saturated content is 23.37%, the aromatic content is 64.52%, the colloid is 9.14%, and the asphaltene is 2.97%;

The H/C atomic number ratio in Type B oil slurry is 1.10, according to the mass percentage, the saturated content is 20.8%, the aromatic content is 60.15%, the colloid is 14.59%, and the asphaltenes are 4.46%;

The H/C atomic number ratio in type C oil slurry is 1.20, the saturated content is 34.34%, the aromatic content is 56.95%, the colloid is 6.96%, and the asphaltene is 1.75%.

The H/C atomic number ratio in the vacuum residue is 1.49, the saturated content is 22.64%, the aromatic content is 50.05%, the colloid is 22.72%, and the asphaltene is 4.59%;

Compared with the three catalytic cracking oil slurries, the B type oil slurry has low content of saturated and aromatic components and high viscosity, and the ratio should be less than more, and the control is 10 parts; the content of A type oil slurry is middle in saturated and aromatic components, and its fluidity is high. Good, but the ratio of hydrogen to carbon atoms is low, and the proportion can be appropriately increased, controlled at 20 parts; C type oil slurry has the highest content of saturated and aromatic components, the best fluidity, and the best effect on improving the properties of blended oil products. The ratio is 70 copies.

The proportion of catalytic cracking oil slurry in the blended oil must be controlled within an appropriate range. If the proportion is too low (less than 10 parts), the increase in saturated and aromatic content is small, and the change in fluidity and colloidal stability is small. The improvement effect of oil quality is small. If the ratio is too high (higher than 30 parts), the viscosity of the blended oil tends to be stable, the decrease in the stability of the colloidal system becomes smaller, the degree of unsaturation of the oil increases, and the content of solid particles continues to increase, which improves the quality of the residual oil The effect is greatly reduced, and even the nature of the oil becomes bad. The ratio is controlled at 10-30 parts. At this time, the viscosity of the blended oil drops sharply, the fluidity increases significantly, the stability of the colloidal system decreases greatly, the saturated content of the blended oil increases, the density increases, and the residual carbon and nitrogen Elements, sulfur, and metal elements (Ni+V) content decrease, which is beneficial to improve the quality of deasphalted oil, at this time, the effect of adding FCC slurry on the quality of residual oil is most significant.

The proportion of vacuum residue is 70-90 parts, the proportion is low, the content of aromatic components increases, the degree of unsaturation of oil products increases, and the solid content increases at the same time, resulting in a decrease in the quality of deasphalted oil. The proportioning ratio is high, the saturated content in the oil is low, and the viscosity improvement effect is not obvious, which is not conducive to the heat transfer and mass transfer of the solvent deasphalting process, and affects the yield of deasphalted oil.

A method for preparing a blended oil product, specifically carried out according to the following steps:

Step 1, get the raw material;

According to the ratio of parts by mass, select 10-30 parts of catalytic cracking oil slurry; 70-90 parts of vacuum residue;

Among them, in the catalytic cracking oil slurry, there are 20 parts of type A oil slurry, 10 parts of type B oil slurry, and 70 parts of type C oil slurry;

The H/C atomic number ratio in type A oil slurry is 1.03, the saturated content is 23.37%, the aromatic content is 64.52%, the colloid is 9.14%, and the asphaltene is 2.97% according to mass percentage;

The H/C atomic number ratio in Type B oil slurry is 1.10, according to the mass percentage, the saturated content is 20.8%, the aromatic content is 60.15%, the colloid is 14.59%, and the asphaltenes are 4.46%;

The H/C atomic number ratio in type C oil slurry is 1.20, according to the mass percentage, the saturated content is 34.34%, the aromatic content is 56.95%, the colloid is 6.96%, and the asphaltene is 1.75%;

The H/C atomic number ratio in the vacuum residue is 1.49, according to the mass percentage, the saturation content is 22.64%, the aromatic content is 50.05%, the colloid is 22.72%, and the asphaltene is 4.59%. The vacuum residue oil is Oman vacuum residue oil; for the market Sales of products, the production company is Sinopec Maoming Petrochemical Branch.

Step 2, blending of catalytic cracking oil slurry;

Take type A oil slurry, type B oil slurry, and type C oil slurry and place them in an oven respectively, and heat them under normal pressure at 90°C for 2-3 hours to make them heated evenly; after fully heated, take them out and stir them evenly, and The ratio is 20 parts of A type oil slurry, 10 parts of B type oil slurry, and 70 parts of C type oil slurry to obtain catalytic cracking oil slurry. Stir for 0.5h to make it fully mixed, and then place it in an oven and heat at 90°C for 1.5-2h.

Table 1 Properties of raw materials

project FCC Slurry Vacuum residue Density(20℃)/(g·cm ^-3 ) 1.0377 1.0059 Dynamic viscosity(80℃)/(Pa·s) 0.027 3.83 Charcoal residue (ω), % 4.99 17.92 Ash content (ω), % 0.136 0.023 H/C atomic number ratio 1.16 1.49 Element content (ω), % C 89.32 82.83 h 8.97 10.35 N 0.96 2.54 S 0.75 4.28 Metal content (Ni+V)/(μg·g ^-1 ) 2.33 21.56 Content of four components (ω), % Saturation 30.80 22.64 Aroma 58.79 50.05 colloid 8.16 22.72 Asphaltenes 2.25 4.59 Colloid Stability Parameters 2.8 8.2

The four components in Table 1 are classified according to the types of hydrocarbons, which are a collection of one type of substances, each type has thousands of molecular structures, and cannot be specific for a certain substance. The colloidal stability parameters are within the professional Nouns are well known in the art.

Step 3, the preparation of the blended oil product;

The vacuum residue is heated at 100°C under normal pressure for 3-4h;

The fully heated catalytic cracking oil slurry and vacuum residue are prepared according to the mass ratio of 10-30 parts of oil slurry and 90-70 parts of residue. During the preparation process, agitator is used to stir at 150r/min 0.5h, until fully mixed.

After the stirring, put the obtained blended oil in an oven, heat it at 90°C under normal pressure for 1.5-2h, take it out, stir again with a stirrer at a speed of 150r/min for 0.5h to make it evenly mixed, and then cool it down. Instantly.

The properties of the blended oil prepared from 30 parts of oil slurry and 70 parts of residual oil according to the mass ratio are shown in Table 2.

Table 2 Properties of blended oils

project blended oil Vacuum residue Density(20℃)/(g·cm ^-3 ) 1.0139 1.0059 Dynamic viscosity(80℃)/(Pa·s) 0.476 3.83 Charcoal residue (ω), % 13.73 17.92 Ash content (ω), % 0.059 0.023 H/C atomic ratio 1.39 1.49 Elemental analysis (ω), % C 85.23 82.83 h 9.89 10.35 N 1.57 2.54 S 3.31 4.28 Metal content (Ni+V)/(μg·g ^-1 ) 15.21 21.56 Four components (ω), % Saturation 25.32 22.64 Aroma 52.23 50.05 colloid 18.44 22.72 Asphaltenes 4.01 4.59 Colloid Stability Parameters 5.2 8.2

It can be seen from Table 2 that the viscosity of the prepared blended oil is reduced by 1/8 of the vacuum residue, the carbon residue is reduced by 4.19%, the metal content is reduced by 6.35μg·g ^-1 , the colloidal stability parameters are reduced by 3 units, and the saturated The content of aromatic components increased by 4.86%, and the quality of oil products was significantly improved.

After the prepared blended oil is deasphalted by solvent, the yield of deasphalted oil increases by 2.42%, which achieves the purpose of improving the economic benefit of the refinery.

1. Oil blending experiment

1.1 Experimental raw materials: FCC slurry was selected for catalytic cracking oil slurry, and Oman vacuum residue was selected for vacuum residue; both are commercially available products, and the manufacturer is Sinopec Maoming Petrochemical Branch.

1.2 Blending experiment of oil products

According to the blending mass fractions of 10%, 30%, 50%, 70%, and 90%, the catalytic cracking oil slurry is respectively blended into the vacuum residue, and fully stirred under the condition of 90° C. to make it evenly mixed. .

1.3. Determination of properties of blended oil

1) Density is measured by densitometer method, and the reference standard is GB/T1884-92.

2) Elemental analysis was carried out using a Vario EL cube elemental analyzer produced in Germany.

3) Dynamic viscosity adopts NDJ-8S rotational viscometer produced by Shanghai Changji Geological Instrument Co., Ltd.

4) The four components adopt the method recommended by the Academy of Petrochemical Sciences, and the reference standard is NB/SH/T 0509-2010.

5) The metal (Ni, V) content was determined by atomic absorption spectrometry.

1.4 Characterization of the stability of the blended oil colloidal system

Adding n-heptane to the blended oil will cause the association and coagulation of asphaltenes, which will change the colloidal stability of the system. Therefore, the colloidal stability of the blended oil can be characterized by mass fraction conductivity method . Under the condition of constant temperature (30±0.1)℃, measure the change of electrical conductivity in the process of adding n-heptane to the oil, and calculate the mass fraction electrical conductivity of the sample. When the mass fraction electrical conductivity shows the maximum value, it indicates that the asphaltenes have obviously decomposed. Coagulation, the mass ratio of n-heptane and oil added at this time is defined as the colloidal stability parameter (CSP). The better the colloidal stability of the system, the larger the colloidal stability parameter; otherwise, the smaller the colloidal stability parameter.

Results and discussion:

2.1 Analysis of properties of raw materials

It can be seen from Table 1 that the density of FCC oil slurry is larger than that of vacuum residue, while the dynamic viscosity, carbon residue and open flash point are obviously smaller than that of residue oil; from the perspective of element content, the H/C of FCC oil slurry is 1.20, which is smaller than that of vacuum residue. At the same time, the content of N, S elements and metal elements Ni+V in FCC oil slurry is also significantly smaller than that of vacuum residue; from the perspective of four-component composition, the content of vacuum residue The content of saturated and aromatic components is 72.69%, the content of colloid and asphaltene is 27.31%, while the content of saturated and aromatic components of FCC oil slurry reaches as much as 91.29%. The content of asphaltene and asphaltene is 8.71%, which is obviously lower than that of vacuum residue, which shows that some components in FCC oil slurry can be used again.

2.2 Analysis of blending oil viscosity change

As shown in Figure 1, with the increase of the blending ratio of FCC oil slurry, the viscosity of the blended oil gradually decreases, and there is an exponential function relationship between them. When the blending ratio of oil slurry is less than 30%, as the blending ratio increases, the concentration of saturated and aromatic components in the blended oil increases, while the concentration of colloids and asphaltenes decreases, resulting in the asphaltene molecules. As the spacing becomes larger, the number of associations of asphaltene molecules decreases, the cross-linking effect between asphaltene molecules decreases, and the internal friction between molecules in the system decreases, so that the viscosity of the blended oil decreases sharply. Therefore, from the perspective of heat and mass transfer, blending an appropriate amount of FCC oil slurry in residual oil can reduce its viscosity and improve the fluidity of residual oil, which is beneficial to the mass and heat transfer between phases in the process of solvent deasphalting , improve the heat transfer and mass transfer efficiency of the solvent deasphalting process, thereby improving the separation efficiency of deasphalted oil and deoiled asphalt. When the blending ratio of the oil slurry is greater than 30%, due to the further increase of the molecular distance and the solubilization of saturated and aromatic components, the asphaltene molecules hardly cross-link, and the asphaltene tends to be monomer-dispersed, and the blended oil The change of product viscosity tends to be stable.

2.3 Analysis of the density, carbon residue, metal, elemental composition, H/C atomic ratio and ash content of the blended oil

The relationship between the density of the blended oil, carbon residue and metal, element composition and H/C ratio, ash content and the blending ratio of oil slurry is shown in Figure 2-Figure 5.

It can be seen that the density, residual carbon, metal elements (Ni+V), hydrogen element, sulfur element content, and H/C atomic ratio of the blended oil have a linear relationship with the blending ratio of FCC oil slurry, and the change of ash content There is no obvious functional relationship with the blending ratio of oil slurry, which is caused by the uneven distribution of solid particles in residual oil and oil slurry before blending.

The H/C atomic ratio decreases, indicating that the unsaturation of the blended oil increases, and the FCC oil slurry contains more polycyclic aromatic hydrocarbons, too much mixing will reduce the quality of the deasphalted oil; the ash content of the blended oil increases with the FCC oil slurry The mixing ratio increases and the solid content in the oil slurry is high. The introduction of too many solid particles will increase the wear and tear on the pipeline and equipment, and reduce the service life of the equipment.

After adding FCC oil slurry, the density of the blended oil increases, and the density difference with propane increases, which reduces the extraction resistance, facilitates the extraction process, and improves the yield of deasphalted oil; the residual carbon and metal elements ( The contents of Ni+V), hydrogen and sulfur decrease with the increase of FCC slurry blending ratio, which is beneficial to improve the quality of deasphalted oil.

2.4 Changes in the content of the four components of the blended oil

The relationship between the content of the four components of the blended oil and the blending ratio of FCC slurry is shown in Figure 6. Four components refer to a method of expressing the composition of hydrocarbons in oil.

It can be seen from the figure that with the increase of the amount of oil slurry added, the content of saturated and aromatic components in the oil gradually increases, while the content of gum and bitumen gradually decreases. Some components in FCC oil slurry and residual oil have similar structures. According to the principle of similar miscibility, polar and non-polar components with similar solubility coefficients can dissolve each other. There is no mutual transformation between the components, so the content of the four components of the blended oil changes linearly with the increase of the amount of slurry added.

The increase of the content of saturates and monocyclic and bicyclic aromatics is beneficial to improve the quality and yield of deasphalted oil. At the same time, the change of the content of each component also has an important impact on the colloidal stability of the oil. Gum is the main factor affecting the stability of the colloid, the aromatic component has a protective effect on the stability of the colloid, and the saturated component destroys the stability of the colloid. Excessively high saturated content and low colloid content can lead to a decrease in colloidal stability, making asphaltenes unstable. In order to understand more clearly the degree of influence of blending FCC oil slurry on the colloidal stability of the blended oil, a study on the colloidal stability was carried out.

2.5 Effect of blending FCC oil slurry on colloidal stability of blended oil

2.5.1 Mass fraction conductivity method to investigate the influence of blending FCC oil slurry on oil colloidal stability

Figure 7 shows the measured influence of blending FCC oil slurry on the stability of the blended oil colloid system when n-heptane is used as the solvent. It can be seen from Figure 7 that with the increase of the blending amount of FCC oil slurry, the colloidal stability parameter (CSP) of the blended oil shows a downward trend, which shows that the stability of the blended oil colloidal system decreases after adding FCC oil slurry , colloids and asphaltenes are in an unstable state. When the blending ratio is less than 30%, the CSP of the blended oil decreases greatly, indicating that the stability of the original colloidal system is severely damaged; when the blending ratio is greater than 30%, the CSP of the blended oil decreases. , there is little difference in the colloidal stability at this time.

2.5.2 Four-component composition method to investigate the influence of blending FCC oil slurry on oil colloidal stability

Studies by Loeber et al. have shown that the contents of saturates and asphaltenes reflect the association tendency of asphaltene, and the contents of aromatics and colloids reflect their ability to disperse asphaltene. The colloid component is the key factor to prevent asphaltene deposition, and the ratio of colloid to asphaltene content is usually used as the main parameter to measure the colloidal stability of residual oil. Therefore, the change of oil colloidal stability can be judged by examining the changes of ω(Sat+Asp)/ω(Res+Arom) and ω(Res)/ω(Asp), and the changes are shown in Table 3.

Table 3 The four-component content of different oil slurry blending ratio reduction and oil products

It can be seen from Table 3 that with the increase of FCC slurry blending ratio, ω(Sat+Asp)/ω(Res+Arom) gradually increases, and ω(Res)/ω(Asp) gradually decreases. From this, it can be judged that the dispersion and peptization ability of aromatic components and colloids in the blended oil to asphaltene is reduced, and the stability of the system is reduced, which is consistent with the result of mass fraction conductivity method characterization.

According to the process mechanism of the solvent deasphalting process based on the aggregation theory, when propane is mixed with residual oil, the colloids and asphaltenes are in an unstable state, and when there is a sufficient amount of propane, the colloids and asphaltenes begin to aggregate, precipitate and separate. After a certain amount of FCC oil slurry is blended in the residual oil, the stability of the colloid system decreases, which increases the possibility of colloid and asphaltene accumulation, making the separation of deasphalted oil and deoiled asphalt easier, which is beneficial to propane deasphalting craft.

2.6 Discussion on the blending ratio of FCC oil slurry

Through the above research, it is found that the properties of oils and oils with different oil slurry blending ratios are different, and even have great differences. When the blending ratio is less than 30%, the viscosity of the blended oil drops sharply, the fluidity increases significantly, the stability of the colloidal system decreases greatly, the saturated content of the blended oil increases, the density increases, and residual carbon, nitrogen, and The content of sulfur element and metal element (Ni+V) decreases, which is beneficial to improve the quality of deasphalted oil, indicating that adding FCC slurry at this time has the most significant effect on improving the quality of residual oil. When the blending ratio is greater than 30%, the viscosity of the blended oil tends to be stable, the decrease in the stability of the colloidal system becomes smaller, the degree of unsaturation of the oil increases, and the content of solid particles continues to increase. The improvement effect of the oil is greatly reduced, and even the properties of the oil become worse.

It can be seen that the blending amount of oil slurry is not as large as possible, but must be kept within a certain range. After the above analysis, it is appropriate to control the blending ratio of FCC oil slurry within 30%.

Example 1

According to the ratio of mass and number, select 20 parts of A kind of oil slurry, 10 parts of B kind of oil slurry, and 70 parts of C kind of oil slurry;

In type A oil slurry, the H/C atomic number ratio is 1.03, the saturated content is 23.37%, the aromatic content is 64.52%, the colloid is 9.14%, and the asphaltene is 2.97%;

The H/C atomic number ratio in Type B oil slurry is 1.10, according to the mass percentage, the saturated content is 20.8%, the aromatic content is 60.15%, the colloid is 14.59%, and the asphaltenes are 4.46%;

The H/C atomic number ratio in type C oil slurry is 1.20, according to the mass percentage, the saturated content is 34.34%, the aromatic content is 56.95%, the colloid is 6.96%, and the asphaltene is 1.75%;

Then choose the vacuum residue, the H/C atomic number ratio in the vacuum residue is 1.49, according to the mass percentage, the saturated content is 22.64%, the aromatic content is 50.05%, the colloid is 22.72%, and the asphaltenes are 4.59%;

Take type A oil slurry, type B oil slurry, and type C oil slurry and place them in an oven respectively, and heat them under normal pressure at 90°C for 2 hours to make them heated evenly; Type B oil slurry and Type C oil slurry were prepared to obtain catalytic cracking oil slurry. During the preparation process, a stirrer was used to stir at a speed of 150r/min for 0.5h to make it fully mixed, and then placed in an oven and heated at 90°C for 1.5h;

The vacuum residue was heated at 100°C under normal pressure for 3 hours;

The fully heated catalytic cracking oil slurry and vacuum residue are prepared according to the mass ratio of 10 parts of catalytic cracking oil slurry and 90 parts of vacuum residue. During the preparation process, a stirrer is used to stir 0.5 h, until fully mixed; after stirring, put the obtained blended oil in an oven, heat at 90°C under normal pressure for 1.5h, take it out and stir again with a stirrer at 150r/min for 0.5h to mix Evenly, then cool, that is.

Example 2

According to the ratio of mass and number, select 20 parts of A kind of oil slurry, 10 parts of B kind of oil slurry, and 70 parts of C kind of oil slurry;

In type A oil slurry, the H/C atomic number ratio is 1.03, the saturated content is 23.37%, the aromatic content is 64.52%, the colloid is 9.14%, and the asphaltene is 2.97%;

The H/C atomic number ratio in Type B oil slurry is 1.10, according to the mass percentage, the saturated content is 20.8%, the aromatic content is 60.15%, the colloid is 14.59%, and the asphaltenes are 4.46%;

The H/C atomic number ratio in type C oil slurry is 1.20, according to the mass percentage, the saturated content is 34.34%, the aromatic content is 56.95%, the colloid is 6.96%, and the asphaltene is 1.75%;

Then choose the vacuum residue, the H/C atomic number ratio in the vacuum residue is 1.49, according to the mass percentage, the saturated content is 22.64%, the aromatic content is 50.05%, the colloid is 22.72%, and the asphaltenes are 4.59%;

Take Type A oil slurry, Type B oil slurry, and Type C oil slurry and place them in an oven respectively, and heat them under normal pressure at 90°C for 3 hours to make them heated evenly; Type B oil slurry and Type C oil slurry were prepared to obtain catalytic cracking oil slurry. During the preparation process, a stirrer was used to stir at a speed of 150r/min for 0.5h to make it fully mixed, and then placed in an oven and heated at 90°C for 2h;

The vacuum residue was heated at 100°C under normal pressure for 4 hours;

The fully heated catalytic cracking oil slurry and vacuum residue are prepared according to the mass ratio of 30 parts of catalytic cracking oil slurry and 70 parts of vacuum residue. During the preparation process, a stirrer is used to stir 0.5 h, until fully mixed; after stirring, put the obtained blended oil in an oven, heat at 90°C under normal pressure for 2h, take it out and stir again with a stirrer at a speed of 150r/min for 0.5h to make it evenly mixed , and then cooled, that is.

Example 3

According to the ratio of mass and number, select 20 parts of A kind of oil slurry, 10 parts of B kind of oil slurry, and 70 parts of C kind of oil slurry;

In type A oil slurry, the H/C atomic number ratio is 1.03, the saturated content is 23.37%, the aromatic content is 64.52%, the colloid is 9.14%, and the asphaltene is 2.97%;

The H/C atomic number ratio in Type B oil slurry is 1.10, according to the mass percentage, the saturated content is 20.8%, the aromatic content is 60.15%, the colloid is 14.59%, and the asphaltenes are 4.46%;

The H/C atomic number ratio in type C oil slurry is 1.20, according to the mass percentage, the saturated content is 34.34%, the aromatic content is 56.95%, the colloid is 6.96%, and the asphaltene is 1.75%;

Then choose the vacuum residue, the H/C atomic number ratio in the vacuum residue is 1.49, according to the mass percentage, the saturated content is 22.64%, the aromatic content is 50.05%, the colloid is 22.72%, and the asphaltenes are 4.59%;

Take Type A oil slurry, Type B oil slurry, and Type C oil slurry and place them in an oven respectively, and heat them under normal pressure at 90°C for 2.5 hours to make them heated evenly; , Type B oil slurry, and Type C oil slurry were prepared to obtain catalytic cracking oil slurry. During the preparation process, a stirrer was used to stir at a speed of 150r/min for 0.5h to make it fully mixed, and then placed in an oven and heated at 90°C for 1.8h;

The vacuum residue was heated for 3.5 hours at 100°C under normal pressure;

The fully heated catalytic cracking oil slurry and vacuum residue are prepared according to the mass ratio of 20 parts of catalytic cracking oil slurry and 80 parts of vacuum residue. During the preparation process, a stirrer is used to stir 0.5 h, until fully mixed; after stirring, put the obtained blended oil in an oven, heat at 90°C under normal pressure for 1.8h, take it out and stir again at 150r/min for 0.5h to mix Evenly, then cool, that is.

Claims (2)

1. a kind of oil product that is in harmonious proportion is it is characterised in that according to quality parts ratio, be made up of following raw material:

Catalytic cracked oil pulp 10-30 part；Decompression residuum 70-90 part；

In described catalytic cracked oil pulp, 20 parts of the slurry oil of kind containing a, 10 parts of b kind slurry oil, 70 parts of c kind slurry oil；

In described a kind slurry oil, h/c atom number compares 1.03, divides 23.37% according to mass percent saturation in described a kind slurry oil, Fragrance point 64.52%, colloid 9.14%, asphalitine 2.97%；

In described b kind slurry oil, h/c atom number compares 1.10, divides 20.8% according to mass percent saturation, virtue in described b kind slurry oil Fragrant point 60.15%, colloid 14.59%, asphalitine 4.46%；

In described c kind slurry oil, h/c atom number compares 1.20, divides 34.34% according to mass percent saturation in described c kind slurry oil, Fragrance point 56.95%, colloid 6.96%, asphalitine 1.75%；

In described decompression residuum, h/c atom number compares 1.49, divides according to mass percent saturation in described decompression residuum 22.64%, fragrance point 50.05%, colloid 22.72%, asphalitine 4.59%.

2. a kind of preparation method of mediation oil product as claimed in claim 1 is it is characterised in that follow the steps below:

Step 1, takes raw material；

According to quality parts ratio, choose 20 parts of a kind slurry oil, 10 parts of b kind slurry oil, 70 parts of c kind slurry oil；

In a kind slurry oil, h/c atom number compares 1.03, divides 23.37% according to mass percent saturation, fragrance divides 64.52%, colloid 9.14%, asphalitine 2.97%；

In b kind slurry oil, h/c atom number compares 1.10, divides 20.8% according to mass percent saturation, fragrance divides 60.15%, colloid 14.59%, asphalitine 4.46%；

In c kind slurry oil, h/c atom number compares 1.20, divides 34.34% according to mass percent saturation, fragrance divides 56.95%, colloid 6.96%, asphalitine 1.75%；

Choose decompression residuum again, in decompression residuum, h/c atom number compares 1.49, divide 22.64% according to mass percent saturation, virtue Fragrant point 50.05%, colloid 22.72%, asphalitine 4.59%；

Step 2, the mediation of catalytic cracked oil pulp；

A kind slurry oil, b kind slurry oil, c kind slurry oil is taken to be respectively placed in baking oven, the 2-3h that is heated under 90 DEG C of condition of normal pressure is so as to be heated all Even；After being fully heated, take out respectively and stir, a kind slurry oil, b kind slurry oil, c kind slurry oil are modulated obtaining catalytic cracking Slurry oil, stirring 0.5h under 150r/min rotating speed using agitator in modulated process makes it be sufficiently mixed, and is subsequently placed in baking oven Interior 90 DEG C of heating 1.5-2h；

Step 3, the preparation of mediation oil product；

Decompression residuum, under 100 DEG C of normal pressures, heats 3-4h；

By the catalytic cracked oil pulp after being fully heated and decompression residuum, it is catalytic cracked oil pulp 10-30 part, decompression according to mass ratio Residual oil 90-70 part is modulated, and stirs 0.5h using agitator in modulated process under 150r/min rotating speed, until fully mixed Close；After stirring terminates, the mediation obtaining oil product is placed in baking oven, heats 1.5-2h under 90 DEG C of condition of normal pressure, after taking-up again Secondary agitator stirs 0.5h under 150r/min rotating speed and makes its mix homogeneously, then cools down, obtains final product.