Tail gas treatment device

Abstract

The utility model discloses a tail gas treatment device, which relates to the field of tail gas treatment and comprises a treatment bin, a gas inlet pipe, a support seat, an exhaust pipe, a spray head, a filter bin and a bin cover, the gas inlet pipe extending to the outer side of the treatment bin is arranged in the treatment bin, and the support seat is arranged at the bottom end of the treatment bin. An exhaust pipe extending to the outer side of the treatment bin is arranged on the side, away from the air inlet pipe, of the treatment bin. According to the tail gas treatment device, harmful substances in tail gas are adsorbed and separated for multiple times by arranging the four groups of treatment bins and the three groups of gas guide pipes, so that the harmful substances in the tail gas are adsorbed and separated for multiple times, the content of the harmful substances in the tail gas is effectively reduced, and the harmful substances in the tail gas are separated more easily; meanwhile, solid impurities can be filtered in the circulating process of the solution, the utilization rate of the solution is increased, the treatment cost is reduced, and the waste solution and the solid impurities can be classified and treated conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas treatment, in particular to a tail gas treatment device. Background Art

[0002] Polysilicon is a form of elemental silicon. When molten elemental silicon solidifies under supercooling conditions, silicon atoms are arranged into many crystal nuclei in the form of diamond lattice. If these crystal nuclei grow into grains with different crystal plane orientations, these grains will combine and crystallize into polysilicon. The production process of polysilicon will produce a large amount of exhaust gas. The exhaust gas contains harmful gas compounds that are easy to cause air pollution and solid particulate compounds that are easy to cause land pollution. Therefore, an exhaust gas treatment device is needed to treat the exhaust gas.

[0003] The existing tail gas treatment device uses a decomposition solution to spray the tail gas generated in the polysilicon production process, so that the solution adsorbs and separates the toxic substances in the tail gas. The existing tail gas treatment process is to inject the tail gas into the treatment bin, spray the solution through a nozzle to make the solution contact with the tail gas, and decompose the toxic substances in the tail gas by the solution adsorbing the toxic substances in the tail gas, and the decomposed tail gas is recovered. The solid impurities in the tail gas remain in the treatment bin and are prone to accumulation. In addition, it is difficult for the solution to fully contact the tail gas during the spraying process, resulting in incomplete use of the solution and difficulty in achieving the function of reuse. There are still some solid particles in the tail gas after the tail gas treatment device sprays the solution, and it is difficult to collect the waste solution and solid impurities separately. Utility Model Content

[0004] The utility model aims to provide a tail gas treatment device to solve the problem that the tail gas treatment devices currently on the market are difficult to circulate and fully utilize the solution, as mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an exhaust gas treatment device, comprising a treatment chamber, an air intake pipe, a support seat, an exhaust pipe, a shower nozzle, a filter chamber and a chamber cover, wherein the interior of the treatment chamber is provided with an air intake pipe extending to the outside of the treatment chamber, the bottom end of the treatment chamber is provided with a support seat, the side of the treatment chamber away from the air intake pipe is provided with an exhaust pipe extending to the outside of the treatment chamber, the top of the treatment chamber is provided with a shower nozzle extending to the outside of the top end of the treatment chamber, the one side of the treatment chamber is provided with a filter chamber, the interior of the filter chamber is provided with a chamber cover extending to the outside of the top end of the filter chamber, the top of the shower nozzle is provided with a fixed pipe, and one end of the fixed pipe is provided with a water pipe.

[0006] Preferably, a water pump connected to the filter bin is installed at one end of the water pipe away from the fixed pipe.

[0007] Preferably, there are four groups of processing chambers, water flow troughs are connected between the four groups of processing chambers, and an air duct extending to the interior of another group of processing chambers is provided inside the processing chambers of one group.

[0008] Preferably, the interior of the filter bin is provided with a drainage pipe extending to the interior of the processing bin, the inner wall of the filter bin is provided with a support ring, the top of the support ring is provided with a filter net, and the inner wall of the filter bin is provided with a limiting groove.

[0009] Preferably, a fixing rod is provided inside the bin cover, a spring is provided on the outer wall of the fixing rod, one end of the fixing rod is sleeved with a limiting rod extending into the limiting groove, and a sliding groove extending to the outside of the top end of the bin cover is opened inside the bin cover.

[0010] Preferably, a sliding rod penetrating the sliding groove is arranged at the top end of the limiting rod, a fixing block is arranged at the top end of the sliding rod, and a handle is arranged at the top end of the bin cover.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. When it is necessary to use the tail gas treatment device to treat the tail gas generated in the polysilicon production process, the operator injects the tail gas into the inside of the treatment chamber through the air inlet pipe, the operator injects the solution into the inside of the filter chamber, the operator turns on the water pump, the water pump extracts the solution inside the filter chamber, and the solution is sent to the inside of the shower nozzle through the water pipe and the fixed pipe. The solution is sprayed through the shower nozzle, and the shower nozzle sprays the solution on the tail gas in the first group of treatment chambers, so that the harmful substances in the tail gas are first adsorbed and separated, and the harmful substances in the tail gas are adsorbed and separated multiple times through four groups of treatment chambers and three groups of air guide pipes. The tail gas after multiple adsorption and separation is recovered through the exhaust pipe, and the solution inside the four groups of treatment chambers is circulated through the water flow trough, and the solution is discharged through the drain pipe. The solution enters the filter bin, and is filtered through the filter screen inside the filter bin to remove solid impurities in the solution. The filtered solution is transmitted by a water pump and sprayed again to achieve circulating spraying of the solution, which is convenient for making full use of the solution and more convenient for treating harmful substances in the exhaust gas. By setting up four groups of treatment bins and three groups of air ducts, the harmful substances in the exhaust gas are adsorbed and separated multiple times, which effectively reduces the content of harmful substances in the exhaust gas and makes it easier to separate harmful substances in the exhaust gas. At the same time, the solution can filter solid impurities during the circulation process, which improves the utilization rate of the solution, reduces the treatment cost, and facilitates the classification and treatment of waste solution and solid impurities.

[0013] 2. When the operator needs to process solid impurities and waste solution, the waste solution in the processing bin and the filter bin is taken out by a water pump. After the waste solution is taken out, the operator slides the fixed block, and the fixed block drives the sliding rod and the limit rod to slide on the outer wall of the fixed rod. The limit rod moves and loses the limit on the limit groove. The operator removes the bin cover from the top of the filter bin by the handle, and the operator takes out the solid impurities filtered out from the top of the filter net. By setting the filter bin, bin cover and filter net, the tail gas impurities adsorbed in the solution are classified and processed, so that the solid impurities are easy to collect and process uniformly. At the same time, the solution is filtered to make full use of the solution, which is convenient for fully adsorbing harmful substances in the tail gas while effectively reducing the cost of using the solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the front view of the utility model;

[0015] Figure 2 This is a front view cutaway diagram of the utility model;

[0016] Figure 3 It is a top view of the utility model;

[0017] Figure 4 It is an enlarged view of point A of the present utility model.

[0018] In the figure: 1. processing chamber; 101. water flow trough; 102. air guide pipe; 2. air inlet pipe; 3. support seat; 4. exhaust pipe; 5. shower nozzle; 501. fixing pipe; 502. water pipe; 503. water pump; 6. filter chamber; 601. drain pipe; 602. support ring; 603. filter net; 604. limit groove; 7. chamber cover; 701. fixing rod; 702. spring; 703. limit rod; 704. sliding groove; 705. sliding rod; 706. fixing block; 707. handle. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4The utility model provides a technical solution: an exhaust gas treatment device, including a treatment chamber 1, an air intake pipe 2, a support seat 3, an exhaust pipe 4, a shower head 5, a filter chamber 6 and a chamber cover 7. The interior of the treatment chamber 1 is provided with an air intake pipe 2 extending to the outside of the treatment chamber 1, the bottom end of the treatment chamber 1 is provided with a support seat 3, the side of the treatment chamber 1 away from the air intake pipe 2 is provided with an exhaust pipe 4 extending to the outside of the treatment chamber 1, the top of the treatment chamber 1 is provided with a shower head 5 extending to the outside of the top of the treatment chamber 1, the filter chamber 6 is provided on one side of the treatment chamber 1, the interior of the filter chamber 6 is provided with a chamber cover 7 extending to the outside of the top of the filter chamber 6, the top of the shower head 5 is provided with a fixed pipe 501, and one end of the fixed pipe 501 is provided with a water pipe 502.

[0021] See also Figure 1 , 2 As can be seen from Figure 3 , a water pump 503 connected to the filter bin 6 is installed at one end of the water pipe 502 away from the fixed pipe 501 .

[0022] In specific implementation, when it is necessary to use the exhaust gas treatment device to treat the exhaust gas generated in the polysilicon production process, the operator injects the exhaust gas into the interior of the processing chamber 1 through the air inlet pipe 2, the operator injects the solution into the interior of the filter chamber 6, the operator turns on the water pump 503, the water pump 503 extracts the solution inside the filter chamber 6, and the solution is sent to the interior of the shower head 5 through the water pipe 502 and the fixed pipe 501. The solution is sprayed through the shower head 5, and the shower head 5 sprays the solution on the exhaust gas in the first group of processing chambers 1, so that the harmful substances in the exhaust gas are adsorbed and separated for the first time. When the exhaust gas in the first group of processing chambers 1 continues to increase, the exhaust gas pressure in the first group of processing chambers 1 increases, so that the exhaust gas in the first group of processing chambers 1 enters the bottom of the second group of processing chambers 1 through the first group of air guide pipes 102 At the end, the solution in the second group of treatment chambers 1 is subjected to secondary adsorption and separation, and the shower nozzle 5 inside the second group of treatment chambers 1 sprays the exhaust gas for the second time, so that the exhaust gas is adsorbed and separated for the third time, and the harmful substances in the exhaust gas are adsorbed and separated for multiple times through the four groups of treatment chambers 1 and the three groups of air guide pipes 102. The exhaust gas after multiple adsorption and separation is recovered through the exhaust pipe 4, and the solution inside the four groups of treatment chambers 1 is circulated through the water flow trough 101, and the solution enters the interior of the filter chamber 6 through the drain pipe 601. The solution is filtered through the filter mesh 603 inside the filter chamber 6 to remove solid impurities in the solution, and the filtered solution is transmitted by the water pump 503 for spraying again, so as to realize the solution circulation spraying, facilitate the full use of the solution, and make it easier to treat the harmful substances in the exhaust gas.

[0023] See also Figure 2It can be seen that there are four groups of processing chambers 1, and the four groups of processing chambers 1 are connected by water flow troughs 101, and an air duct 102 extending to the interior of another group of processing chambers 1 is arranged inside one group of processing chambers 1. There are four groups of processing chambers 1, and the four groups of processing chambers 1 are connected by water flow troughs 101. There are three groups of water flow troughs 101 and three groups of air ducts 102.

[0024] In specific implementation, the water flow trough 101 is provided to allow the solution inside the four processing chambers 1 to circulate, and the air guide pipe 102 is provided to allow the tail gas inside the four processing chambers 1 to circulate.

[0025] See also Figure 1 , 2 As can be seen from Figures 4, the interior of the filter chamber 6 is provided with a drainage pipe 601 extending to the interior of the processing chamber 1, the inner wall of the filter chamber 6 is provided with a support ring 602, the top of the support ring 602 is provided with a filter net 603, and the inner wall of the filter chamber 6 is provided with a limiting groove 604.

[0026] See also Figure 1 , 2 , 3 and 4, a fixing rod 701 is provided inside the bin cover 7, a spring 702 is provided on the outer wall of the fixing rod 701, a limiting rod 703 extending to the inside of the limiting groove 604 is sleeved on one end of the fixing rod 701, and a sliding groove 704 extending to the outside of the top end of the bin cover 7 is opened inside the bin cover 7.

[0027] See also Figure 1 , 2 , 3 and 4, a sliding rod 705 penetrating the sliding groove 704 is provided at the top of the limiting rod 703, a fixing block 706 is provided at the top of the sliding rod 705, a handle 707 is provided at the top of the bin cover 7, the limiting rod 703 is slidably connected to the fixing rod 701, the sliding rod 705 is slidably connected to the sliding groove 704, the limiting rod 703 is snap-connected to the limiting groove 604, and the outer wall of the bottom end of the bin cover 7 fits with the inner wall of the filter bin 6 to form a sealing state.

[0028] During specific implementation, when the operator needs to process solid impurities and waste solution, the operator removes the water pipe 502 at the output end of the water pump 503, and takes out the waste solution inside the processing chamber 1 and the filter chamber 6 through the water pump 503. After the waste solution is taken out, the operator slides the fixed block 706, and the fixed block 706 drives the sliding rod 705 to slide on the inner wall of the sliding groove 704, and the sliding rod 705 drives the limiting rod 703 to slide on the outer wall of the fixed rod 701, and the limiting rod 703 pushes the spring 702 to be compressed, and the limiting rod 703 moves to lose the limit on the limiting groove 604, and the operator removes the chamber cover 7 from the top of the filter chamber 6 through the handle 707, and the operator takes out the solid impurities filtered out from the top of the filter screen 603. By setting the filter chamber 6, the chamber cover 7 and the filter screen 603, the tail gas impurities adsorbed in the solution are classified and processed, so that the solid impurities are easy to collect and process in a unified manner.

[0029] In summary, when the operator uses the tail gas treatment device to treat the tail gas produced by polysilicon, when the operator injects the tail gas into the processing chamber 1 through the air inlet pipe 2, the operator injects the solution into the filter chamber 6, the operator turns on the water pump 503, the water pump 503 extracts the solution inside the filter chamber 6, the water pump 503 transports the solution to the fixed pipe 501 through the water pipe 502, and transports the solution to the inside of the shower head 5 through the fixed pipe 501, the solution is sprayed through the shower head 5, and the shower head 5 sprays the solution on the harmful substances in the tail gas for the first adsorption and separation, when the first group of treatment The exhaust gas in the bin 1 continues to increase, which increases the exhaust gas pressure in the first group of treatment bins 1, and causes the exhaust gas in the first group of treatment bins 1 to enter the bottom of the second group of treatment bins 1 through the first group of air ducts 102, and is adsorbed and separated for a second time by the solution in the second group of treatment bins 1. The spray nozzle 5 inside the second group of treatment bins 1 sprays the exhaust gas for a second time, so that the harmful substances in the exhaust gas are adsorbed and separated for a third time. The exhaust gas is adsorbed and separated for multiple times through four groups of treatment bins 1 and three groups of air ducts 102, and the exhaust gas after multiple adsorption and separation is discharged from the interior of the exhaust treatment device through the exhaust pipe 4, and the exhaust gas after adsorption and separation is recovered.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An exhaust gas treatment device, comprising a treatment chamber (1), an air inlet pipe (2), a support seat (3), an exhaust pipe (4), a shower head (5), a filter chamber (6) and a chamber cover (7), characterized in that: An air inlet pipe (2) extending to the outside of the processing chamber (1) is arranged inside the processing chamber (1), a support seat (3) is arranged at the bottom end of the processing chamber (1), an exhaust pipe (4) extending to the outside of the processing chamber (1) is arranged on the side of the processing chamber (1) away from the air inlet pipe (2), a shower head (5) extending to the outside of the top end of the processing chamber (1) is arranged at the top of the processing chamber (1), a filter chamber (6) is arranged on one side of the processing chamber (1), a chamber cover (7) extending to the outside of the top end of the filter chamber (6) is arranged inside the filter chamber (6), a fixing pipe (501) is arranged at the top end of the shower head (5), and a water pipe (502) is arranged at one end of the fixing pipe (501).

2. The exhaust gas treatment device according to claim 1, characterized in that: A water pump (503) connected to the filter bin (6) is installed at one end of the water pipe (502) away from the fixed pipe (501).

3. The exhaust gas treatment device according to claim 1, characterized in that: There are four groups of processing chambers (1), and water flow troughs (101) are connected between the four groups of processing chambers (1). An air guide pipe (102) extending to the interior of another group of processing chambers (1) is arranged inside the processing chambers (1).

4. The exhaust gas treatment device according to claim 1, characterized in that: The interior of the filter chamber (6) is provided with a drainage pipe (601) extending to the interior of the processing chamber (1); the inner wall of the filter chamber (6) is provided with a support ring (602); the top of the support ring (602) is provided with a filter net (603); and the inner wall of the filter chamber (6) is provided with a limiting groove (604).

5. The exhaust gas treatment device according to claim 4, characterized in that: A fixing rod (701) is arranged inside the bin cover (7), a spring (702) is arranged on the outer wall of the fixing rod (701), one end of the fixing rod (701) is sleeved with a limiting rod (703) extending to the inside of the limiting groove (604), and a sliding groove (704) extending to the outside of the top end of the bin cover (7) is opened inside the bin cover (7).

6. The tail gas treatment device according to claim 5, characterized in that: The top end of the limiting rod (703) is provided with a sliding rod (705) penetrating the sliding groove (704), the top end of the sliding rod (705) is provided with a fixing block (706), and the top end of the bin cover (7) is provided with a handle (707).

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