CN105509784A - Circulation pipeline simulation test device and TiCl4 vanadium removal pipeline clogging condition test method - Google Patents
Circulation pipeline simulation test device and TiCl4 vanadium removal pipeline clogging condition test method Download PDFInfo
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- CN105509784A CN105509784A CN201510849366.0A CN201510849366A CN105509784A CN 105509784 A CN105509784 A CN 105509784A CN 201510849366 A CN201510849366 A CN 201510849366A CN 105509784 A CN105509784 A CN 105509784A
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- 229910052720 vanadium Inorganic materials 0.000 title claims abstract description 57
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 238000012360 testing method Methods 0.000 title claims abstract description 38
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 title claims abstract description 21
- 238000010998 test method Methods 0.000 title claims abstract description 7
- 238000004088 simulation Methods 0.000 title abstract description 17
- 229910003074 TiCl4 Inorganic materials 0.000 title description 2
- 238000000034 method Methods 0.000 claims abstract description 30
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 239000011261 inert gas Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 5
- 125000004122 cyclic group Chemical group 0.000 claims 1
- 238000003860 storage Methods 0.000 abstract description 55
- 238000004519 manufacturing process Methods 0.000 abstract description 21
- 238000007670 refining Methods 0.000 abstract description 8
- 238000011160 research Methods 0.000 abstract description 3
- 239000007787 solid Substances 0.000 description 11
- 238000007664 blowing Methods 0.000 description 9
- 238000009413 insulation Methods 0.000 description 8
- 230000037390 scarring Effects 0.000 description 6
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 4
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 4
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 4
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 4
- 239000005642 Oleic acid Substances 0.000 description 4
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 4
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 4
- 238000004321 preservation Methods 0.000 description 4
- 238000010835 comparative analysis Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 208000032544 Cicatrix Diseases 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 230000037387 scars Effects 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
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- General Physics & Mathematics (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
本发明公开了一种循环管道模拟测试装置和TiCl4除钒管道堵塞条件测试方法，通过模拟循环式管道生产，以对生产过程进行优化。循环管道模拟测试装置，包括存储槽和循环泵，存储槽上设置加料斗，循环泵的入口端位于存储槽内，循环泵的出口端连接管道，管道连接至存储槽内，形成循环回路，循环回路上设置流量、压力、粘度、温度测试装置，通过模拟类似的生产过程，为生产过程进行优化提供依据。通过上述装置进行的TiCl4除钒管道堵塞条件测试方法是：将粗四氯化钛装入存储槽内，加热并使粗四氯化钛在存储槽和管道内循环，再加入除钒试剂，模拟四氯化钛精制工艺中换热器的运行，开展不同除钒试剂得到的除钒残渣和不同浓度的除钒残渣对换热器的影响试验研究。
The invention discloses a circulation pipeline simulation test device and a method for testing the clogging condition of a TiCl 4 vanadium removal pipeline, which optimizes the production process by simulating circulation pipeline production. The circulation pipeline simulation test device includes a storage tank and a circulation pump. The storage tank is equipped with a hopper, the inlet of the circulation pump is located in the storage tank, the outlet of the circulation pump is connected to the pipeline, and the pipeline is connected to the storage tank to form a circulation loop. Flow, pressure, viscosity and temperature testing devices are set up on the circuit to provide a basis for optimizing the production process by simulating similar production processes. Carried out by the above-mentioned device TiCl The test method for vanadium-removing pipeline blockage conditions is: put thick titanium tetrachloride into the storage tank, heat and make the thick titanium tetrachloride circulate in the storage tank and the pipeline, then add the vanadium-removing reagent, Simulate the operation of the heat exchanger in the titanium tetrachloride refining process, and carry out experimental research on the influence of vanadium removal residue obtained by different vanadium removal reagents and different concentrations of vanadium removal residue on the heat exchanger.
Description
技术领域technical field
本发明涉及一种对循环式管道生产过程进行模拟测试的装置，以及一种对TiCl4除钒得到的除钒残渣进行模拟生产，并对管道堵塞条件进行测试的方法。The invention relates to a device for simulating and testing the circulating pipeline production process, and a method for simulating the production of the vanadium-removed residue obtained by removing vanadium from TiCl 4 and testing the condition of pipeline blockage.
背景技术Background technique
在TiCl4生产中，有机物除钒精制工艺因在生产成本和产品质量上具有明显优势，已成为四氯化钛除钒的主流工艺。但是，有机物除钒精制工艺也存在其他除钒工艺没有的缺点，有机试剂在发生除钒反应后生成粘稠状的除钒残渣，该除钒残渣进入精制循环系统后产生两方面的问题：一方面除钒残渣会附着在容器内壁或管道内壁上，难以清除，严重影响传热；另一方面该除钒残渣易在设备管道和容器壁上结疤，尤其容易造成换热器管道堵塞，最终导致停产检修。In the production of TiCl 4 , the refining process for removing vanadium from organic matter has become the mainstream process for removing vanadium from titanium tetrachloride because of its obvious advantages in production cost and product quality. However, the organic vanadium removal refining process also has shortcomings that other vanadium removal processes do not have. The organic reagent generates a viscous vanadium removal residue after the vanadium removal reaction occurs. After the vanadium removal residue enters the refining circulation system, two problems arise: 1. On the one hand, the vanadium removal residue will adhere to the inner wall of the container or the inner wall of the pipe, which is difficult to remove and seriously affects the heat transfer; on the other hand, the vanadium removal residue is easy to form scars on the equipment pipe and the container wall, which is especially easy to cause blockage of the heat exchanger pipe, eventually lead to downtime for maintenance.
研究表明，精制循环系统中的除钒残渣的浓度和性质决定了除钒残渣在系统内粘结和结疤的速度和程度，因此，掌握由不同除钒试剂得到的除钒残渣在一定的生产工艺参数下对循环系统的影响，对于优化有机试剂选择方案和除钒泥浆固含量控制，甚至对改进有机物除钒精制工艺具有十分重要的意义。Studies have shown that the concentration and properties of the vanadium removal residue in the refining circulation system determine the speed and degree of the vanadium removal residue in the system. The impact of process parameters on the circulation system is of great significance for optimizing the selection of organic reagents and controlling the solid content of vanadium removal slurry, and even improving the refining process of organic vanadium removal.
目前，尚无可对不同除钒试剂得到的除钒残渣在一定的在生产工艺参数下对循环系统中换热器运行的影响进行模拟测试的装置，尤其是对循环管道堵塞条件进行测试的装置。At present, there is no device that can simulate the impact of the vanadium removal residue obtained by different vanadium removal reagents on the operation of the heat exchanger in the circulation system under certain production process parameters, especially the device that can test the blockage of the circulation pipeline .
发明内容Contents of the invention
本发明所要解决的技术问题是提供一种循环管道模拟测试装置，通过模拟循环式管道生产过程，以根据测试结果对生产过程进行优化。The technical problem to be solved by the present invention is to provide a circulating pipeline simulation test device, which can optimize the production process according to the test results by simulating the production process of the circulating pipeline.
本发明解决其技术问题所采用的技术方案是：循环管道模拟测试装置，包括存储槽和循环泵，所述存储槽上设置加料斗，所述循环泵的入口端位于存储槽内，循环泵的出口端连接管道的一端，管道的另一端为出口端并连接至存储槽内。The technical solution adopted by the present invention to solve its technical problems is: a circulation pipeline simulation test device, including a storage tank and a circulation pump, a feeding hopper is arranged on the storage tank, the inlet end of the circulation pump is located in the storage tank, and the circulation pump The outlet end is connected to one end of the pipeline, and the other end of the pipeline is the outlet end and is connected to the storage tank.
通过循环泵，将装于存储槽内的物料泵入管道，再返回至存储槽内，形成循环回路，模拟类似的生产过程。同时监测管道和存储槽内的流量、压力、粘度等过程值的变化，可以得到整个模拟循环运行过程的动态过程。Through the circulation pump, the materials contained in the storage tank are pumped into the pipeline, and then returned to the storage tank to form a circulation loop to simulate a similar production process. Simultaneously monitor the changes of flow, pressure, viscosity and other process values in the pipeline and storage tank, and the dynamic process of the entire simulated cycle operation process can be obtained.
进一步的是，所述存储槽为密闭结构，存储槽内安装有搅拌器，存储槽的槽底设置带阀门的卸料口。对于需要搅拌的物料，搅拌器可使得存储槽内物料更加均匀。卸料口用于将存储槽内的物料排尽。Further, the storage tank has a closed structure, a stirrer is installed in the storage tank, and a discharge port with a valve is arranged at the bottom of the storage tank. For materials that need to be stirred, the agitator can make the materials in the storage tank more uniform. The discharge port is used to drain the material in the storage tank.
进一步的是，所述存储槽上设置加热装置，管道外侧设置隔热装置或保温装置。Further, a heating device is provided on the storage tank, and a heat insulation device or heat preservation device is provided outside the pipeline.
进一步的是，所述存储槽内安装有液位计、温度计和粘度计，管道上还设置流量计和压力计。Further, a liquid level gauge, a thermometer and a viscometer are installed in the storage tank, and a flowmeter and a pressure gauge are also arranged on the pipeline.
进一步的是，所述管道上至少连接一段可折短管，可折短管外缠绕隔热装置或保温装置。例如，可折短管两端通过法兰连接于管道上，模拟测试完成后，便于可折短管拆下，观测可折短管内的物料的结疤、附着情况。Further, the pipeline is connected with at least one section of a foldable short tube, and the foldable short tube is wrapped with a thermal insulation device or a thermal insulation device. For example, the two ends of the short foldable pipe are connected to the pipeline through flanges. After the simulation test is completed, it is convenient to remove the short foldable pipe and observe the scarring and adhesion of the material in the short foldable pipe.
进一步的是，所述管道上设置带阀门的吹气口。Further, an air blowing port with a valve is provided on the pipeline.
进一步的是，所述循环泵为液下泵，液下泵安装于存储槽内的槽底。Further, the circulation pump is a submerged pump, and the submerged pump is installed at the bottom of the storage tank.
本发明还提供一种由上述任意一种循环管道模拟测试装置进行的TiCl4除钒管道堵塞条件测试方法，通过模拟四氯化钛精制工艺中换热器的运行，开展不同除钒试剂得到的除钒残渣和不同浓度的除钒残渣对换热器运行影响的试验研究。TiCl4除钒管道堵塞条件测试方法，包括以下步骤：The present invention also provides a method for testing the clogging condition of the TiCl4 vanadium-removing pipeline carried out by any of the above-mentioned circulating pipeline simulation test devices. By simulating the operation of the heat exchanger in the titanium tetrachloride refining process, different vanadium-removing reagents are obtained. Experimental study on the effect of vanadium removal residues and different concentrations of vanadium removal residues on the operation of heat exchangers. TiCl 4 method for testing the clogging condition of the vanadium removal pipeline, comprising the following steps:
A、将粗四氯化钛装入存储槽内，启动加热装置并设定目标温度；A. Put the crude titanium tetrachloride into the storage tank, start the heating device and set the target temperature;
B、启动循环泵，粗四氯化钛在存储槽和管道内循环，形成循环系统；B, start circulation pump, thick titanium tetrachloride circulates in storage tank and pipeline, forms circulation system;
C、从加料斗加入除钒试剂，保持存储槽内的物料均匀混合，保持循环系统持续运行，并监测循环过程的温度、压力、粘度、流量；C. Add the vanadium removal reagent from the hopper, keep the materials in the storage tank mixed evenly, keep the circulation system running continuously, and monitor the temperature, pressure, viscosity and flow rate during the circulation process;
D、循环完毕后循环系统停止运行，通过吹气口进行惰性气体反吹；D. After the cycle is completed, the cycle system stops running, and the inert gas is blown back through the blowing port;
E、卸下管道，并观测管道内壁残渣附着情况；E. Remove the pipe and observe the adhesion of the residue on the inner wall of the pipe;
其中，所述存储槽为密闭结构，存储槽上设置加热装置，管道外侧设置隔热装置或保温装置，管道上还设置带阀门的吹气口。Wherein, the storage tank has a closed structure, a heating device is arranged on the storage tank, a heat insulation device or a heat preservation device is arranged on the outside of the pipeline, and an air blowing port with a valve is also arranged on the pipeline.
具体地，所述步骤D中，所述惰性气体为氮气。氮气吹扫用于排空管道内的四氯化钛液体。Specifically, in the step D, the inert gas is nitrogen. Nitrogen purge is used to evacuate the titanium tetrachloride liquid in the pipeline.
具体地，所述加热装置为履带式加热器，步骤A中的目标温度为135℃。Specifically, the heating device is a crawler heater, and the target temperature in step A is 135°C.
具体地，所述管道上连接一段可折短管，可折短管两端通过法兰连接于管道上，可折短管外缠绕保温装置；所述步骤E中，拆卸下可折短管两端，并观测可折短管内壁残渣附着情况。Specifically, a short foldable pipe is connected to the pipeline, and the two ends of the short foldable pipe are connected to the pipeline through flanges, and the heat preservation device is wrapped around the short foldable pipe; in the step E, the two ends of the short foldable pipe are removed end, and observe the adhesion of residues on the inner wall of the foldable short tube.
通过分析管道或可折短管内壁残渣附着情况及压力变化情况，可建立不同固含量在管道内的附着及结疤模型，再通过比较分析优化试剂选择方案和除钒泥浆固含量控制方案。By analyzing the residue adhesion and pressure changes on the inner wall of the pipeline or short foldable pipe, the adhesion and scarring model of different solid contents in the pipeline can be established, and then the reagent selection scheme and the solid content control scheme of the vanadium removal mud can be optimized through comparative analysis.
本发明的有益效果是：循环管道模拟测试装置适用于对循环式管道生产过程进行模拟测试，有助于通过试验进行模拟生产，监测生产过程，为生产工艺优化提供参考依据。The beneficial effects of the present invention are that the circulation pipeline simulation test device is suitable for simulation testing of the circulation pipeline production process, helps simulate production through tests, monitors the production process, and provides reference for production process optimization.
TiCl4除钒管道堵塞条件测试方法，通过模拟四氯化钛精制工艺中换热器的运行，开展不同除钒试剂得到的除钒残渣和不同浓度的除钒残渣对换热器运行影响的试验研究。从而选择较优的除钒试剂和除钒泥浆固含量范围，可有效预防实际生产过程中换热器的堵塞，进而减少检修工作量的资金和人力的投入，在保证了生产顺利运行和提高产能的基础上，还保护了工人的身体健康。TiCl 4 vanadium removal pipeline blockage test method, by simulating the operation of the heat exchanger in the titanium tetrachloride refining process, carried out experiments on the influence of vanadium removal residue obtained by different vanadium removal reagents and different concentrations of vanadium removal residue on the operation of the heat exchanger Research. Therefore, choosing a better vanadium removal reagent and solid content range of vanadium removal slurry can effectively prevent the clogging of the heat exchanger in the actual production process, thereby reducing the maintenance workload of funds and manpower investment, ensuring the smooth operation of production and increasing production capacity On the basis of this, it also protects the health of workers.
附图说明Description of drawings
图1是本发明循环管道模拟测试装置的结构示意图。Fig. 1 is a structural schematic diagram of a circulation pipeline simulation test device of the present invention.
图中零部件、部位及编号：存储槽1、循环泵2、管道3、加热装置4、加料斗5、吹气口6、流量计7、压力计8、温度计9、粘度计10、可折短管11、卸料口12。Parts, parts and numbers in the figure: storage tank 1, circulation pump 2, pipeline 3, heating device 4, hopper 5, blowing port 6, flow meter 7, pressure gauge 8, thermometer 9, viscometer 10, can be shortened Pipe 11, discharge port 12.
具体实施方式detailed description
下面结合附图和实施例对本发明作进一步说明。The present invention will be further described below in conjunction with drawings and embodiments.
如图1所示，本发明循环管道模拟测试装置，包括存储槽1和循环泵2，存储槽1上设置加料斗5，加料斗5用于补充循环物料或者其他添加剂，循环泵2的入口端位于存储槽1内，循环泵2的出口端连接管道3的一端，管道3的另一端为出口端并连接至存储槽1内，形成封闭的循环回路。通过循环泵2，将装于存储槽1内的物料泵入管道3，再返回至存储槽1内，模拟类似的生产过程。循环泵2为液下泵，优选耐腐蚀的液下泵，安装于存储槽1内的槽底。As shown in Figure 1, the circulation pipeline simulation test device of the present invention comprises a storage tank 1 and a circulation pump 2, a feeding hopper 5 is arranged on the storage tank 1, and the feeding hopper 5 is used to replenish circulating materials or other additives, and the inlet port of the circulation pump 2 Located in the storage tank 1, the outlet end of the circulation pump 2 is connected to one end of the pipeline 3, and the other end of the pipeline 3 is the outlet end and connected to the storage tank 1, forming a closed circulation loop. Through the circulating pump 2, the materials contained in the storage tank 1 are pumped into the pipeline 3, and then returned to the storage tank 1 to simulate a similar production process. The circulation pump 2 is a submerged pump, preferably a corrosion-resistant submerged pump, installed at the bottom of the storage tank 1 .
存储槽1为密闭结构，以避免外界环境对存储槽1内部环境造成影响。存储槽1的槽底设置带阀门的卸料口12，卸料口12用于将存储槽1内的物料排尽。存储槽1和管道3形成循环系统，为了监测模拟测试的过程参数，循环系统中还包括检测装置，包括存储槽1液位监测，循环系统的压力、温度、粘度等，以监测整个模拟循环运行过程的动态过程。具体地，存储槽1内安装有液位计、温度计9和粘度计10，管道3上还设置流量计7和压力计8。对于需要搅拌的物料，存储槽1内安装有搅拌器，搅拌器可使得存储槽1内物料更加均匀，避免物料分层现象。The storage tank 1 is an airtight structure to prevent the external environment from affecting the internal environment of the storage tank 1 . The tank bottom of the storage tank 1 is provided with a discharge port 12 with a valve, and the discharge port 12 is used for draining the materials in the storage tank 1. The storage tank 1 and the pipeline 3 form a circulation system. In order to monitor the process parameters of the simulation test, the circulation system also includes detection devices, including the liquid level monitoring of the storage tank 1, the pressure, temperature, viscosity, etc. of the circulation system, to monitor the entire simulation cycle operation The dynamics of the process. Specifically, a liquid level gauge, a thermometer 9 and a viscometer 10 are installed in the storage tank 1 , and a flowmeter 7 and a pressure gauge 8 are also arranged on the pipeline 3 . For materials that need to be stirred, an agitator is installed in the storage tank 1, and the agitator can make the materials in the storage tank 1 more uniform and avoid material stratification.
存储槽1上设置加热装置4，通过加热装置4的温控系统对存储槽1内的物料进行加热或保温，以模拟相应需要加热或者维持一定温度的生产过程。具体地，储存槽1外围缠绕螺旋状的履带式加热器，用来加热储存槽1内的物料，使其达到并维持在预定温度。由于循环过程中管道3中的物料较少，可以在管道3外侧设置隔热装置或保温装置，具体可根据管道3的长度来决定：当管道3的长度较长，还可在管道3外侧设置加热装置，例如履带式加热器；当管道3的长度较短，可直接在管道3外侧设置保温装置即可。The storage tank 1 is provided with a heating device 4, and the temperature control system of the heating device 4 is used to heat or keep warm the materials in the storage tank 1, so as to simulate the corresponding production process that needs to be heated or maintained at a certain temperature. Specifically, a spiral crawler heater is wound around the storage tank 1 to heat the material in the storage tank 1 to reach and maintain a predetermined temperature. Since the material in the pipeline 3 is less during the circulation process, a heat insulation device or heat preservation device can be installed outside the pipeline 3, which can be determined according to the length of the pipeline 3: when the length of the pipeline 3 is longer, it can also be installed outside the pipeline 3 A heating device, such as a crawler heater; when the length of the pipeline 3 is relatively short, a thermal insulation device can be directly installed outside the pipeline 3.
由于模拟测试完成后，需要对管路3内壁的物料附着情况进行观测，管道3上至少连接一段可折短管11，可折短管11外缠绕隔热装置或保温装置。例如，可折短管11两端通过法兰连接于管道3上，循环管道3模拟测试完成后，将可折短管11拆下，便于观测可折短管11内的物料的结疤、附着情况。管路3上还是设置阀门，管道3上设置带阀门的吹气口6，需要的时候通过吹入气体(尤其是惰性气体，如氮气)排空管道3残留的物料。After the simulation test is completed, it is necessary to observe the material adhesion on the inner wall of the pipeline 3, at least a short foldable pipe 11 is connected to the pipeline 3, and the heat insulation device or thermal insulation device is wrapped around the short foldable pipe 11. For example, the two ends of the short foldable tube 11 are connected to the pipeline 3 through flanges. After the simulation test of the circulation pipeline 3 is completed, the short foldable tube 11 is removed to facilitate the observation of the scarring and adhesion of the material in the short foldable tube 11. Condition. A valve is still set on the pipeline 3, and a gas blowing port 6 with a valve is set on the pipeline 3, and the remaining material in the pipeline 3 is evacuated by blowing gas (especially an inert gas, such as nitrogen) when necessary.
本发明还提供一种通过上述循环管道模拟测试装置进行TiCl4除钒管道堵塞条件测试的方法，包括以下步骤：The present invention also provides a kind of method that carries out TiCl by above-mentioned circulation pipeline simulation testing device The method for the clogging condition test of vanadium removal pipeline, comprises the following steps:
A、将粗四氯化钛装入存储槽1内，启动加热装置4并设定目标温度，目标温度的选取根据模拟测试的工艺决定，将粗四氯化钛全部加热至目标温度；A, put thick titanium tetrachloride into the storage tank 1, start the heating device 4 and set the target temperature, the selection of the target temperature is determined according to the process of the simulation test, and all the thick titanium tetrachloride is heated to the target temperature;
B、启动循环泵2，粗四氯化钛在存储槽1和管道3内循环，形成循环系统；B, start circulation pump 2, thick titanium tetrachloride circulates in storage tank 1 and pipeline 3, forms circulation system;
C、从加料斗5加入除钒试剂，为了研究不同的除钒试剂得到的除钒残渣对换热器运行的影响，可以分次试验不同的除钒试剂；保持存储槽内4的物料均匀混合，例如通过安装于存储槽1内的搅拌器保持物料均匀，保持循环系统持续运行，并监测循环过程的温度、压力、粘度、流量及其他过程参数；C. Add the vanadium removal reagent from the hopper 5. In order to study the influence of the vanadium removal residue obtained by different vanadium removal reagents on the operation of the heat exchanger, different vanadium removal reagents can be tested in batches; keep the materials in the storage tank 4 evenly mixed , such as keeping the material uniform through the agitator installed in the storage tank 1, keeping the circulation system running continuously, and monitoring the temperature, pressure, viscosity, flow rate and other process parameters of the circulation process;
D、循环完毕后循环系统停止运行，通过吹气口6进行惰性气体反吹，具体地，通过吹气口6进行氮气反吹，用于排空管道3内的四氯化钛液体；D. After the cycle is completed, the circulation system is stopped, and the inert gas blowback is carried out through the blowing port 6, specifically, the nitrogen blowing is carried out through the blowing port 6, which is used to empty the titanium tetrachloride liquid in the pipeline 3;
E、直接卸下管道3，并观测管道内壁残渣附着情况；或者拆卸下可折短管11两端，并观测可折短管11内壁残渣附着情况。E. Remove the pipeline 3 directly, and observe the adhesion of the residue on the inner wall of the pipeline; or disassemble the two ends of the short foldable pipe 11, and observe the adhesion of the residue on the inner wall of the short foldable pipe 11.
根据上述方法，可为后续的通过分析管道或可折短管内壁残渣附着情况及压力变化情况，建立不同固含量在管道内的附着及结疤模型，通过比较分析可优化除钒试剂选择方案和除钒泥浆固含量控制方案等研究提供依据。According to the above method, the adhesion and scarring models of different solid contents in the pipeline can be established by analyzing the residue adhesion and pressure changes on the inner wall of the pipeline or the short foldable pipe, and the selection scheme of the vanadium removal reagent can be optimized through comparative analysis. Provide a basis for research on solid content control schemes for vanadium removal mud.
以下提供两个实施例对TiCl4除钒管道堵塞条件测试的方法进行说明。其中，存储槽1的容积为500L，循环泵2的功率为1.5kW、扬程为8.5m、流量8m3/h，存储槽1外缠绕的加热装置4为履带式加热器，功率为20kW。Two examples are provided below to illustrate the method for testing the blocking conditions of the TiCl 4 vanadium removal pipeline. Among them, the volume of the storage tank 1 is 500L, the power of the circulating pump 2 is 1.5kW, the head is 8.5m, and the flow rate is 8m 3 /h. The heating device 4 wrapped around the storage tank 1 is a crawler heater with a power of 20kW.
实施例1：开展油酸作为除钒试剂所得除钒残渣循环运行情况试验Embodiment 1: Carry out oleic acid as the vanadium removal residue obtained by vanadium removal reagent circulation operation test
①将400L粗四氯化钛装入存储槽1中；②设置履带式加热器加热目标温度为135℃，并加热至设置目标温度；③启动循环泵2使粗四氯化钛在系统内循环；④从加料斗5缓慢加入21kg油酸(3％固含量)，加入速度为50g/min，并监测循环过程的温度、压力、粘度、流量；⑤10天后，循环系统停止运行，启动氮气反吹；⑥卸下可折短管11两端，并观测可折短管11内壁残渣附着情况。①Put 400L crude titanium tetrachloride into the storage tank 1; ②Set the heating target temperature of the crawler heater to 135°C, and heat to the set target temperature; ③Start the circulating pump 2 to circulate the crude titanium tetrachloride in the system ; 4. slowly add 21kg oleic acid (3% solid content) from feed hopper 5, adding speed is 50g/min, and monitor the temperature, pressure, viscosity, flow of circulation process; ; ⑥Remove the two ends of the short foldable tube 11, and observe the adhesion of residues on the inner wall of the short foldable tube 11.
根据上述测试结果可建立残渣在管道内的附着模型，进而得出油酸作为除钒试剂，生成的除钒残渣在可换换热器模拟管道中的附着及结疤规律，从而进行油酸作为除钒试剂的可行性评估。According to the above test results, the attachment model of the residue in the pipeline can be established, and then the oleic acid is used as a vanadium removal reagent, and the adhesion and scarring rules of the generated vanadium removal residue in the simulated pipeline of the heat exchanger can be obtained, so that the oleic acid can be used as a vanadium removal agent. Feasibility assessment of vanadium removal reagents.
实例2：开展不同固废含量对循环系统运行情况试验Example 2: Carrying out experiments on the operation of the circulation system with different solid waste contents
①将400L粗四氯化钛装入存储槽1中；②设置履带式加热器加热目标温度为135℃，并加热至设置目标温度；③启动循环泵2使粗四氯化钛在系统内循环；④从加料斗5缓慢加入除钒试剂，加入速度为50g/min，除钒试剂加入总量为70kg(最终10％固含量),分批次加入，每批次间隔3天，每批次加入量7kg；⑤30天后，循环系统停止运行，启动氮气反吹；⑥卸下可折短管11两端，并观测可折短管11内壁残渣附着情况。①Put 400L crude titanium tetrachloride into the storage tank 1; ②Set the heating target temperature of the crawler heater to 135°C, and heat to the set target temperature; ③Start the circulating pump 2 to circulate the crude titanium tetrachloride in the system ; ④ Slowly add the vanadium removal reagent from the hopper 5, the addition speed is 50g/min, the total amount of the vanadium removal reagent is 70kg (final 10% solid content), add in batches, each batch is separated by 3 days, each batch The amount of addition is 7kg; ⑤ After 30 days, the circulation system stops running, and the nitrogen backflush is started; ⑥ Remove the two ends of the flexible short tube 11, and observe the adhesion of the residue on the inner wall of the flexible short tube 11.
根据上述测试结果可建立不同固含量在管道内的附着模型，进而得出不同固含量除钒残渣在可换换热器模拟管道中的附着及结疤规律从而得到较优的除钒除钒固废含量控制方案。According to the above test results, the adhesion model of different solid contents in the pipeline can be established, and then the adhesion and scarring rules of the vanadium removal residues with different solid contents in the simulated pipeline of the heat exchanger can be obtained, so as to obtain a better vanadium and vanadium removal solid. Waste content control program.
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