Cyclone separator suitable for titanium tetrachloride boiling chlorination process

Abstract

The utility model discloses a cyclone separator suitable for a titanium tetrachloride fluidizing chlorination process, which relates to the technical field of the titanium tetrachloride fluidizing chlorination process and comprises an exhaust pipe and a cyclone cylinder, and the exhaust pipe coaxially arranged is arranged in the cyclone cylinder. According to the utility model, the buffer plate is mounted through the matching of the bolt and the nut in the air inlet barrel, so that the buffer effect on entering high-speed air flow can be achieved, the air flow speed is reduced, and meanwhile, a part of dust particles with larger particle sizes can be preliminarily intercepted, so that the subsequent separation work is easier and more efficient; the cyclone separator in the titanium tetrachloride fluidizing chlorination process can remarkably improve the separation efficiency and stability, particularly the separation effect on fine particles (the particle size is smaller than 10 microns) is remarkably improved, through the optimization method, the separation efficiency is improved by 15%-35%, meanwhile, the pressure loss is reduced by 20% or above, and after a high-temperature-resistant and corrosion-resistant coating material is adopted, the separation efficiency is greatly improved. And the cyclone separator is more stable in operation under a long-time high-temperature working condition.

Description

TECHNICAL FIELD

[0001] The utility model relates to titanium tetrachloride boiling chlorination process technical field, concretely is cyclone separator suitable for titanium tetrachloride boiling chlorination process. BACKGROUND

[0002] In titanium tetrachloride (TiCl4) boiling chlorination process, chlorination reaction is carried out at high temperature, and fine solid impurities (such as titanium slag, silicate, etc.) are often produced. In order to ensure the purity of TiCl4 product and the stability of subsequent processing, fine solid impurities in the gas stream need to be separated efficiently and stably. Due to its simple structure and reliable operation, the cyclone separator becomes the core separation equipment of titanium tetrachloride boiling chlorination process. However, the high temperature (about 900℃) and corrosive environment of the gas stream in this process cause the cyclone separator to wear out rapidly and the separation efficiency to fluctuate greatly during operation. The efficiency of the existing cyclone separator under such working conditions is usually not high, especially in the separation of fine impurities, which affects the quality of titanium tetrachloride and the stability of the subsequent processing process. SUMMARY

[0003] The purpose of the utility model is to provide a cyclone separator suitable for titanium tetrachloride boiling chlorination process to solve the problems in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a cyclone separator suitable for titanium tetrachloride boiling chlorination process, comprising an exhaust pipe and a cyclone cylinder, the exhaust pipe is arranged coaxially in the cyclone cylinder, an annular channel is formed between the inner wall of the cyclone cylinder and the outer wall of the exhaust pipe, the upper end of the exhaust pipe penetrates out of the top of the cyclone cylinder, the lower end of the cyclone cylinder is fixedly connected with a dust collector, the inner wall of the cyclone cylinder is provided with a wear-resistant layer, and the outlet of the dust collector is provided with a gas locking and unloading valve.

[0005] As a preferred technical scheme, the outer wall of the exhaust pipe is fixedly connected with a second valve, and the outer wall of the exhaust pipe is fixedly connected with an air inlet pipe.

[0006] As a preferred technical scheme, the outer wall of the air inlet pipe is fixedly connected with a first valve, and one end of the air inlet pipe penetrates out of the outer wall of the cyclone cylinder.

[0007] As a preferred technical scheme, the outer wall of the cyclone cylinder is fixedly connected with a cyclone separator support, and the outer wall of the dust collector is fixedly connected with a dust discharge pipe at the outlet of the dust collector.

[0008] As a preferred technical scheme, the dust collector is fixedly connected with a gas locking and unloading valve through the dust discharge pipe, the outer wall of the cyclone cylinder is fixedly connected with an air inlet cylinder, and the inner wall of the air inlet cylinder is movably connected with a mounting cylinder.

[0009] As a preferred technical scheme, the inner wall of the mounting cylinder is fixedly connected with a buffer plate, the interiors of the mounting cylinder and the air inlet cylinder are both provided with a through hole, the inner wall of the through hole is movably connected with a bolt, and the outer wall of the bolt is threadedly connected with a nut.

[0010] The cyclone separator in the titanium tetrachloride boiling chlorination process can significantly improve separation efficiency and stability, especially the separation effect of fine particles (particle size less than 10 μm) is obviously improved, experiments show that, through the optimization method, the separation efficiency is increased by 15%-35%, and the pressure loss is reduced by more than 20%, in addition, after adopting the high-temperature-resistant and corrosion-resistant coating material, the cyclone separator runs more stably under long-time high-temperature working conditions, and the service life of the equipment is prolonged by 1.5 times.

[0011] The buffer plate is installed in the air inlet cylinder through cooperation of the bolt and the nut, can first play a buffering effect on the entering high-speed airflow, reduce the airflow speed, avoid interference with the normal cyclone separation state due to too fast airflow speed, and can also preliminarily intercept a part of dust particles with large particle size, so that the subsequent separation work is more relaxed and efficient. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;

[0013] Figure 2 It is an internal structure sectional view of the air inlet cylinder of the utility model;

[0014] Figure 3 It is a bolt and nut connection structure schematic diagram of the utility model.

[0015] Wherein: 1, cyclone cylinder; 2, cyclone separator support; 3, air inlet pipe; 4, dust discharge pipe; 5, exhaust pipe; 6, dust collecting hopper; 7, air locking discharge valve; 8, first valve; 9, second valve; 10, air inlet cylinder; 11, mounting cylinder; 12, buffer plate; 13, bolt; 14, nut. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model.

[0017] Obviously, the above is part of the utility model, not all of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model. EMBODIMENT

[0018] REFERENCE Figure 1The utility model provides a kind of cyclone separator, including exhaust pipe 5 with cyclone 1, cyclone 1 is equipped with coaxial line arrangement exhaust pipe 5, annular passage is formed between the inner wall of cyclone 1 and the outer wall of exhaust pipe 5, cyclone 1 top is penetrated from cyclone 1 top by exhaust pipe 5 upper end, the lower end of cyclone 1 is fixedly connected with dust hopper 6, the inner wall of cyclone 1 is equipped with wear layer, dust hopper 6 outlet is equipped with gas locking discharge valve 7, the outer wall of exhaust pipe 5 is fixedly connected with second valve 9, the outer wall of exhaust pipe 5 is fixedly connected with air inlet pipe 3, the outer wall of air inlet pipe 3 is fixedly connected with first valve 8, one end of air inlet pipe 3 is penetrated from the outer wall of cyclone 1, the outer wall of cyclone 1 is fixedly connected with cyclone separator support 2, the outer wall of dust hopper 6 is fixedly connected with ash removal pipe 4 by dust hopper 6 outlet, dust hopper 6 is fixedly connected with gas locking discharge valve 7 by ash removal pipe 4, the outer wall of cyclone 1 is fixedly connected with air inlet cylinder 10, the inner wall of air inlet cylinder 10 is movably connected with mounting cylinder 11, the inner wall of mounting cylinder 11 is fixedly connected with buffer plate 12, the inside of mounting cylinder 11 and the inside of air inlet cylinder 10 are both provided with through hole, the inner wall of through hole is movably connected with bolt 13, the outer wall of bolt 13 is threadedly connected with nut 14.

[0019] In the high-temperature environment of TiCl4 production, the inlet gas flow rate significantly affects the cyclone separation efficiency. High flow rate can enhance centrifugal action and improve particle separation effect, but also increases the wear and energy consumption of the cyclone separator. The present invention proposes to use a high-temperature and corrosion-resistant frequency conversion device to accurately control the flow rate, ensuring that the flow rate is adjusted within the range of 15-25 m / s, balancing the separation efficiency and equipment service life.

[0020] The inlet design of the cyclone separator is crucial for gas flow distribution and centrifugal separation efficiency. By designing a tangential inlet, the gas flow enters the cyclone cylinder in the rotation direction, avoiding wear and energy loss caused by gas flow impacting the inner wall of the cylinder. The present invention also proposes a multi-layer tangential inlet design, which sets different angles and positions of the gas inlet according to the distribution of titanium slag particles, to enhance the cyclone effect and improve the gas-solid separation efficiency.

[0021] For the high-temperature and high-corrosion conditions of titanium tetrachloride boiling chlorination process, the present invention optimizes the cone angle and inner cylinder length ratio of the cyclone separator, controls the cone angle at 20°-25°, and sets the inner cylinder length ratio at 1:3 to ensure stable gas flow field, optimize particle discharge path, maximize centrifugal separation efficiency while reducing energy consumption.

[0022] The wear-resistant layer is a high-temperature-resistant and corrosion-resistant coating material, which can be applied to the high-temperature and high-corrosion environment of the titanium tetrachloride boiling chlorination process, so as to prolong the service life of the separator. When the internal temperature of the separator reaches a preset high temperature value, the control terminal can monitor the temperature and corrosion condition of the coating surface in real time. After obtaining the temperature and corrosion condition of the coating, the control terminal can determine whether the coating reaches a preset durability standard. If the high-temperature corrosion-resistant effect of the coating is within the preset durability standard range, the separator can continue to operate stably at this time. If the coating does not reach the durability standard, or the coating thickness is abnormally worn, the control terminal can determine that the cyclone separator is in a high corrosion risk state at this time. At this time, the operation parameters of the feedback adjustment device can be adjusted, or a maintenance signal can be triggered to remind the operator to check and replace, so as to ensure the efficient and safe operation of the separator. The utility model proposes that the inner wall of the cyclone separator is covered with special high-temperature-resistant and corrosion-resistant material (such as coating material containing high aluminum or high silicon), so as to reduce the corrosion and wear of TiCl4 and solid impurities on the equipment. In addition, the coating thickness is further increased in the inlet area and the cone area, prolonging the service life of the equipment and ensuring long-term stable separation effect.

[0023] To cope with the change of gas-solid concentration in the boiling chlorination process, high-temperature pressure, flow rate and particle concentration sensors are installed in the cyclone separator to form a closed-loop monitoring system. The sensors collect data in real time, and the feedback system adjusts the inlet flow rate, inlet angle and other parameters to ensure that the separator maintains high separation efficiency under different working conditions.

[0024] By inserting the mounting cylinder 11 into the air inlet cylinder 10, aligning the through holes opened on the mounting cylinder 11 with the through holes opened on the air inlet cylinder 10, inserting the bolts 13 into the through holes, and rotating the nuts 14 and inserting them into the bolts 13, the mounting cylinder 11 is installed in the air inlet cylinder 10. Then, the buffer plate 12 plays a buffering role on the entering high-speed airflow, reduces the airflow speed, avoids interference with the normal cyclone separation state inside due to too fast airflow speed, and also preliminarily intercepts some large-particle dust particles, making the subsequent separation work easier and more efficient.

[0025] The above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A cyclone separator suitable for use in a titanium tetrachloride fluidized chlorination process, characterized by: Including exhaust pipe (5) and cyclone (1), the cyclone (1) is equipped with coaxial arrangement exhaust pipe (5), the inner wall of cyclone (1) and the outer wall of exhaust pipe (5) form annular channel, the upper end of exhaust pipe (5) from cyclone (1) top, the lower end of cyclone (1) is fixedly connected with dust hopper (6), the inner wall of cyclone (1) is equipped with wear-resistant layer, the outlet of dust hopper (6) is equipped with air lock valve (7).

2. The cyclone separator of claim 1, wherein: The outer wall of exhaust pipe (5) is fixedly connected with second valve (9), the outer wall of exhaust pipe (5) is fixedly connected with air inlet pipe (3).

3. The cyclone separator of claim 2, wherein: The outer wall of air inlet pipe (3) is fixedly connected with first valve (8), one end of air inlet pipe (3) from the outer wall of cyclone (1) is out.

4. The cyclone separator of claim 1, wherein: The outer wall of cyclone (1) is fixedly connected with cyclone separator support (2), the outer wall of dust hopper (6) is fixedly connected with dust exhaust pipe (4) through the outlet of dust hopper (6).

5. The cyclone separator of claim 1, wherein: The dust hopper (6) is fixedly connected with air lock valve (7) through dust exhaust pipe (4), the outer wall of cyclone (1) is fixedly connected with air inlet cylinder (10), the inner wall of air inlet cylinder (10) is movably connected with mounting cylinder (11).

6. The cyclone separator of claim 5, wherein: The inner wall of mounting cylinder (11) is fixedly connected with buffer plate (12), the inside of mounting cylinder (11) and the inside of air inlet cylinder (10) are both provided with through hole, the inner wall of through hole is movably connected with bolt (13), the outer wall of bolt (13) is threadedly connected with nut (14).

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