CN104498078B - The method of crude oil or heavy crude intensifying distillation - Google Patents

Abstract

The invention discloses the method for crude oil or heavy crude intensifying distillation, comprise the following steps: & lt; 1 & gt; Bio-oil is utilized to carry out pre-treatment to crude oil or heavy crude; & lt; 2 & gt; Utilize the pre-treatment of Cholic acids activator secondary; & lt; 3 & gt; Utilize Regular Insulin three pre-treatment; & lt; 4 & gt; Sodium bicarbonate or sodium thiosulfate four pre-treatment; & lt; 5 & gt; The several step of air distillation; Method air distillation reaction conditions of the present invention is gentle, environmental protection, and gas-liquid yield is high, as clear as crystal light yellow light constituent yield significantly increases, the temperature that the transition temperature of colour-change raises and pungent odour occurs can be made to delay, and technique is simple, easy to operation.

Description

Method for enhanced distillation of crude oil or heavy crude oil

technical field

The invention relates to a method for enhanced distillation of crude oil or heavy crude oil.

Background technique

At present, my country's processed crude oil is becoming increasingly heavy and inferior. Compared with foreign crude oil components, my country's crude oil composition has a higher vacuum residue content, and the quality of vacuum residue in crude oil in most oil fields is as high as 40%-50%. Especially in old oilfields, not only is the output declining, but the crude oil tends to become heavier. In addition, my country's dependence on foreign crude oil is relatively high, reaching 75%, and the proportion of heavy crude oil is also increasing day by day. Therefore, research and development of crude oil, especially the enhanced distillation technology of heavy crude oil to improve the deep processing of heavy oil or heavy crude oil, make full use of limited oil resources, increase the output of light oil, and improve economic benefits have become an urgent need for my country's petroleum refining and chemical industry. The problem to be solved is also an important direction for the progress and development of modern crude oil or heavy crude oil distillation technology.

In terms of enhanced crude oil distillation with enhancers, for example, Russia's Xinwufa Oil Refinery used the third-line refined extraction oil to mix with heavy oil for vacuum distillation, and the extraction rate increased by 4.3%. When 4%-5% of C12-C14 higher fatty alcohol is added to West Siberia crude oil, the yield of light distillate oil is the best. In terms of strengthening agents in my country, such as catalytic cracking oil slurry, phenol, activator NO.3, and some compound additives, etc., can improve the pull-out rate of VGO to a certain extent.

Contents of the invention

The technical problem to be solved by the present invention is to provide a kind of atmospheric distillation with mild reaction conditions, environmental protection, increased gas-liquid yield, clear and transparent light yellow light component yield is remarkable, and can increase the transition temperature of color change and stimulate A method for enhanced distillation of crude oil or heavy crude oil with delayed temperature for odor appearance, simple process, and convenient operation.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

A method for enhanced distillation of crude oil or heavy crude oil, comprising the following steps:

<1> Use biomass oil to pretreat crude oil or heavy crude oil: mix biomass oil and crude oil or heavy crude oil at room temperature and stir evenly at a constant temperature of 36.5-38 ° C, and the amount of biomass oil added is the volume of crude oil 0.5%-10%;

<2>Secondary pretreatment: add the bile acid activator into the mixture obtained in step <1>, the addition amount is 0.01-0.05mg/g, and stir evenly at a constant temperature of 36.5°C-38°C; ℃-38℃ constant temperature water bath heating for 3-6 hours;

<3>Three pretreatments: add insulin to the mixture obtained in step <2>, and stir evenly at a constant temperature of 36.5°C-38°C; then heat in a constant temperature water bath at 36°C-38°C for 3-24 hours;

<4>Four times of pretreatment: add baking soda or sodium bicarbonate to the mixture obtained in step <3> for another pretreatment, the addition amount is 0.05-0.10mg/g, and stir evenly at a constant temperature of 36.5°C-38°C;

<5> carry out normal pressure distillation through step <4> pretreated mixture.

The biomass oil in the step <1> is turpentine oil, castor oil, tung oil, palm oil, soybean oil, sunflower oil, rapeseed oil, peanut oil or corn cocoa germ oil.

In the step (1), the stirring speed is 50rpm-100rpm, and the stirring time is 0.5-1 hour.

The bile acid activator is cholic acid, sodium cholate, cholate, deoxycholic acid salt, ursodeoxycholic acid tablet, ursodeoxycholic acid capsule, ursodeoxycholic acid soft capsule, deoxycholic acid, Hyodeoxycholic acid or glycocholic acid.

In the step (2), the stirring speed is 50rpm-100rpm, and the stirring time is 1-2 hours.

The insulin in the step <3> is insulin powder for injection or insulin for injection; the amount of insulin for injection powder is 0.01-0.10mg/ml; the amount of insulin for injection is 0.05-0.2ml/ml, Crude oil to which injectable insulin is added is distilled to remove its entrained water.

In the step <3>, the stirring speed is 50rpm-100rpm, and the stirring time is 1-3 hours.

In the step <4>, the stirring speed is 50rpm-100rpm, and the stirring time is 0.5-1 hour. Compared with the prior art, the present invention has the advantages of:

1. The process is simple and the operation is simple and easy.

2. This method is applied to the atmospheric distillation of crude oil or heavy crude oil. The reaction conditions are mild, green and environmentally friendly, the gas-liquid yield increases significantly, and the yield of clear and transparent light yellow light components increases significantly. This light fraction is clearer and less viscous than when insulin alone is added.

3. The transition temperature of the color change increased by 30°C-55°C. After 295°C, the temperature rise began to slow down, and a very slight pungent smell appeared; when the temperature reached 320°C-335°C, the color slowly began to turn brown , The pungent smell has always been light. The temperature at which the irritating odor appeared was 35°C-55°C later than that of the blank test, and at the same time, there was a popping sound, indicating that at this time, the crude oil began to crack, which was higher than the cracking temperature when only bile acid activators were added. Increased by 20°C-35°C.

detailed description:

The present invention will be further described below in conjunction with the examples, but it is not intended to limit the protection scope of the present invention.

Example 1:

At room temperature, evenly mix turpentine with an amount of 0.5% of crude oil volume and 100ml of crude oil, and stir evenly with a constant temperature magnetic stirrer at 36.5°C. The rotation speed during stirring is: 50rpm, and the duration of stirring is: 0.5 hours; Secondary pretreatment: Add cholic acid to the above mixture at a mass volume concentration of 0.01mg/g, and stir evenly with a constant temperature magnetic stirrer at 36.5°C, the stirring speed is: 50rpm, and the stirring duration is 1 hour; then heat in a constant temperature water bath at 36.5°C for 3 hours ;Three pretreatments: Add insulin powder for injection into the above mixture at 0.01mg/ml, then stir evenly with a constant temperature magnetic stirrer at 36.5°C, the stirring speed is: 50rpm, and the stirring duration is 1 hour; then stir at 36.5°C Heating and reacting in a constant temperature water bath for 3 hours; four pretreatments: add sodium bicarbonate for pretreatment again, the addition amount is 0.05mg/g, and stir evenly with a constant temperature magnetic stirrer at 36.5°C, the stirring speed is: 50rpm, and the stirring duration is: 0.5 hours; finally, carry out normal pressure distillation on the above-mentioned pretreated mixture, at this time, the light brown temperature of the light component rises to 315°C, and the turning temperature of the color change increases by 30°C; there is a slight pungent smell The onset temperature was 320°C, and the onset of the pungent odor was delayed by 35°C. When the distillation temperature reaches 345-350°C, the gas-liquid yield is 62.5ml, which is 68.9% higher than that of the blank.

Example 2:

At room temperature, mix the castor oil with an amount of 4.0% of crude oil volume and 100ml of crude oil evenly, and stir evenly at 37°C with a constant temperature magnetic stirrer, the stirring speed is: 60rpm, and the stirring duration is: 0.6 hours; the second pretreatment: put Add sodium cholate to the above mixture according to the mass volume concentration of 0.02mg/g, and stir evenly with a constant temperature magnetic stirrer at 37°C, the stirring speed is: 60rpm, and the stirring duration is: 1.2 hours; then heat in a constant temperature water bath at 37°C 4 hours; three pretreatments: Add insulin powder for injection to the above mixture at 0.05mg/ml, then stir evenly with a constant temperature magnetic stirrer at 37°C, the stirring speed is: 60rpm, and the stirring duration is: 1.5 hours; then Heating in a constant temperature water bath at 37°C for 10 hours; four pretreatments: add sodium bicarbonate for pretreatment again, the addition amount is 0.07mg/g, and stir evenly at 37°C with a constant temperature magnetic stirrer, the stirring speed is: 60rpm, the duration of stirring For: 0.6 hours; finally, carry out normal pressure distillation to the above-mentioned pretreated mixture, at this time, the temperature at which the light component appears light brown rises to 320°C, and the transition temperature of the color change increases by 35°C; there is a slight The temperature at which the irritating odor appeared was 325°C, and the temperature at which the irritating odor appeared was delayed by 40°C. When the distillation temperature reaches 345-350°C, the gas-liquid yield is 67.6ml, which is more than 82.7% higher than that of the blank.

Embodiment 3:

At room temperature, mix tung oil with 8.0% volume of crude oil and 100ml of heavy crude oil evenly, and stir evenly with a constant temperature magnetic stirrer at 37.5°C, stirring speed: 70rpm, stirring duration: 0.8 hours; secondary pretreatment: Add cholate to the above mixture at a mass volume concentration of 0.04mg/g, and stir evenly at 37.5°C with a constant temperature magnetic stirrer, the stirring speed is: 70rpm, and the stirring duration is: 1.5 hours; then in a constant temperature water bath at 37.5°C Heating for 5 hours; three pretreatments: Injection-like insulin was added to the above mixture at 0.07ml/ml. The brand specification of the insulin was: Novolin 30R Protamine Biosynthetic Human Insulin Injection 400IU/10ml/branch; Stir evenly with a magnetic stirrer at 37°C, stirring speed: 70rpm, stirring duration: 2.0 hours; then heat in a constant temperature water bath at 37.5°C for 20 hours; during this time, continuously replace the absorbent cotton at the test tube mouth to remove insulin injection as much as possible Moisture carried in the water; four pretreatments: Add baking soda for pretreatment again, the addition amount is 0.08mg/g, and stir evenly with a constant temperature magnetic stirrer at 37.5°C, the stirring speed is: 80rpm, and the stirring duration is: 0.8 Hours; finally, carry out normal pressure distillation on the above-mentioned pretreated mixture, at this time, the temperature at which the light component appears light brown rises to 330°C, and the transition temperature of the color change increases by 45°C; a slight pungent odor appears The temperature of the test was 335°C, and the temperature at which the pungent odor appeared was delayed by 50°C. When the distillation temperature reaches 345-350°C, the gas-liquid yield is 70.8ml, which is more than 91.4% higher than that of the blank.

Example 4:

At room temperature, evenly mix palm oil and 100ml of heavy crude oil in an amount of crude oil volume of 10.0%, and stir evenly with a constant temperature magnetic stirrer at 38°C. The stirring speed is: 100rpm, and the stirring duration is: 1.0 hours; secondary pretreatment : Add cholic acid to the above mixture according to the mass volume concentration of 0.05mg/g, and stir evenly at 38°C with a constant temperature magnetic stirrer, the stirring speed is: 100rpm, and the stirring duration is: 2.0 hours; then in a constant temperature water bath at 38°C Heating for 6 hours; three pretreatments: Add insulin powder for injection to the above mixture at 0.10 mg/ml, then stir evenly with a constant temperature magnetic stirrer at 38°C, stirring speed: 100rpm, stirring duration: 3.0 hours; Then heat in a constant temperature water bath at 38°C for 24 hours; four pretreatments: add baking soda for pretreatment again, the addition amount is 0.10mg/g, and stir evenly at 38°C with a constant temperature magnetic stirrer, the stirring speed is: 100rpm, the duration of stirring For: 1.0 hour; Finally, carry out normal pressure distillation to the above-mentioned pretreated mixture, at this moment, the temperature at which the light component appears light brown rises to 335°C, and the transition temperature of the color change increases by 50°C; there is a slight The temperature at which the pungent odor appeared was 345°C, and the temperature at which the pungent odor appeared was delayed by 55°C. When the distillation temperature reaches 345-350°C, the gas-liquid yield is 73.6ml, which is more than 98.9% higher than that of the blank.

Claims (7)

1. The method for crude oil or heavy crude oil enhanced distillation, is characterized in that, comprises the following steps: <1>Use biomass oil to pretreat crude oil or heavy crude oil: mix biomass oil and crude oil or heavy crude oil at room temperature, then stir evenly at a constant temperature of 36.5°C-38°C, and add biomass oil to crude oil 0.5%-10% of the volume; <2>Secondary pretreatment: add the bile acid activator into the mixture obtained in step <1>, the addition amount is 0.01-0.05mg/g, and stir evenly at a constant temperature of 36.5°C-38°C; ℃-38℃ constant temperature water bath heating for 3-6 hours; <3>Three pretreatments: add insulin to the mixture obtained in step <2>, and stir evenly at a constant temperature of 36.5°C-38°C; then heat in a constant temperature water bath at 36°C-38°C for 3-24 hours; the insulin It is insulin powder for injection or insulin for injection; the amount of insulin for injection powder is 0.01-0.10mg/ml; the amount of insulin for injection is 0.05-0.2ml/ml, and the crude oil added with insulin for injection is before distillation remove the moisture it carries; <4>Four times of pretreatment: add baking soda or sodium bicarbonate to the mixture obtained in step <3> for another pretreatment, the addition amount is 0.05-0.10mg/g, and stir evenly at a constant temperature of 36.5°C-38°C; <5> carry out normal pressure distillation through step <4> pretreated mixture. 2. the method for crude oil or heavy crude oil enhanced distillation according to claim 1, is characterized in that, the biomass oil in described step <1> is turpentine, castor oil, tung oil, palm oil, soybean oil, sunflower seed oil, canola, peanut, or corngerm oil. 3. The method for enhanced distillation of crude oil or heavy crude oil according to claim 1, characterized in that, in the step (1), the stirring speed is 50 rpm-100 rpm, and the stirring time is 0.5-1 hour. 4. the method for crude oil or heavy crude oil strengthened distillation according to claim 1, is characterized in that, described cholic acid activator is cholic acid, sodium cholate, deoxycholate, ursodeoxycholic acid sheet , Ursodeoxycholic Acid Capsules, Ursodeoxycholic Acid Softgels, Deoxycholic Acid, Hyodeoxycholic Acid, or Glycocholic Acid. 5. The method for enhanced distillation of crude oil or heavy crude oil according to claim 1, characterized in that, in the step (2), the stirring speed is 50 rpm-100 rpm, and the stirring time is 1-2 hours. 6. The method for enhanced distillation of crude oil or heavy crude oil according to claim 1, characterized in that, in the step <3>, the stirring speed is 50 rpm-100 rpm, and the stirring time is 1-3 hours. 7. The method for enhanced distillation of crude oil or heavy crude oil according to claim 1, characterized in that, in the step <4>, the stirring speed is 50 rpm-100 rpm, and the stirring time is 0.5-1 hour.