CN211753867U - A device for purification and recovery of coke oven exhaust gas - Google Patents

Abstract

The utility model discloses a device for purifying and recovering coke oven waste gas, which comprises a dust removal bin, a coarse coke particle filter screen and a fine coke particle filter screen. The device for purifying and recovering coke oven exhaust gas is equipped with a liquid filling tank, a long pipe, a rotating nozzle, a reaction plate, etc. The exhaust gas is passed into the primary desulfurization tank, and the rotating nozzle rotates the diethanol ammonia solution to the primary desulfurization tank. Inside, because the reaction plate is inclined, and the reaction plate can be contaminated with diethanol ammonia solution, with the rotating nozzle, the analysis efficiency is improved. The bottom end of the water guide tank forms a three-sided water curtain, and the high-temperature gas can fully interact with the water curtain when passing through the water curtain. Contact, thermal conductive bricks have excellent heat exchange properties, can quickly absorb heat, solve the problem that the pre-cooling effect of the desulfurization tower on the exhaust gas at the exhaust gas inlet is not good, the temperature of the gas is not cooled to the appropriate temperature, and the analysis efficiency of the analysis tank is not high. In the analysis of hydrogen sulfide, the analysis cannot be maximized, resulting in the problem of incomplete desulfurization.

Description

A device for purification and recovery of coke oven exhaust gas

Technical field:

The utility model relates to the high-tech field, in particular to a device for purifying and recovering coke oven waste gas.

Background technique:

Coke oven exhaust gas is mainly composed of carbon dioxide, carbon monoxide, hydrogen sulfide, and sulfur dioxide. Among them, carbon dioxide is a greenhouse gas, carbon monoxide, and hydrogen sulfide are biologically toxic. And the sulfur element in hydrogen sulfide is easy to decipher, and people usually recover and decipher the sulfur element in hydrogen sulfide into sulfur for other production.

At present, the coke oven waste gas is mainly desulfurized through the desulfurization tower, and the subsequent waste gas is absorbed to reduce the content to meet the emission standard, and currently only focus on the treatment of hydrogen sulfide, and the other three types of waste gas are only absorbed by a solution pool, and a solution pool is set Absorption, due to the nature of the gas itself, the contact time with the solution is short, the absorption efficiency is low, and the pre-cooling effect of the desulfurization tower on the exhaust gas at the exhaust gas inlet is not good, and the temperature of the gas is not cooled to an appropriate temperature. High, in the analysis of hydrogen sulfide, the analysis cannot be maximized, resulting in the problem of incomplete desulfurization.

Utility model content:

The purpose of the utility model is to provide a device for purifying and recovering coke oven waste gas, so as to solve the deficiencies of the prior art.

The utility model is implemented by the following technical solutions: a device for purifying and recovering coke oven waste gas, comprising a dust removal bin, a coarse coke particle filter screen and a fine coke particle filter screen, the top inner wall of the dust removal bin and the coarse coke particle filter screen. The top end of the mesh is fixedly connected, the bottom end of the coarse coke particle filter is fixedly connected to the bottom inner wall of the dust removal bin, the top inner wall of the fine coke particle filter is fixedly connected to the top inner wall of the dust removal bin, and the bottom of the dust removal bin is fixedly connected. A coke particle recovery box is communicated with, a first communication pipe is communicated with the right side of the dust removal bin, a first fan is arranged on the first communication tube, and a cooling bin is communicated with the right end of the first communication tube. The top of the silo is fixedly connected with a water guide box, the atomizing nozzle at the bottom end of the water guide box extends to the interior of the cooling silo and is fixedly connected with the top wall of the cooling silo, the bottom end of the cooling silo is connected with a return pipe, and the return pipe A water storage bin is connected to the bottom end of the water storage bin, and the left side of the water storage bin is communicated with the top of the water guide tank through a circulation pipe, and the circulation pipe is provided with a first pressure pump.

A heat-conducting brick is fixedly connected between the front inner wall and the back inner wall of the cooling bin, a primary desulfurization bin is connected to the left side of the cooling bin, and a reaction plate is fixedly connected to the interior of the primary desulfurization bin, and the top of the primary desulfurization bin is fixed A liquid filling tank is connected, the bottom end of the liquid filling tank is connected with a long pipe, the left end of the long pipe extends to the interior of the primary desulfurization bin, the left end of the long pipe is connected with a rotating nozzle, and the left end of the primary desulfurization bin is connected. The bottom end is connected with a guide pipe, the right end of the guide pipe is connected with a first recovery tank, and the guide pipe is provided with a second pressure pump, the right side of the primary desulfurization tank is connected with a second communication pipe, and The second connecting pipe is provided with a second fan, the right side of the second connecting pipe is connected with a secondary impurity removal silo, and the top of the secondary impurity removal silo is provided with a liquid inlet. A grating plate is fixedly connected inside, the bottom of the secondary impurity removal bin is connected with a sinker tube, and a valve is arranged on the sinker tube, and the bottom end of the sinker tube is fixedly connected with a second recovery box. The right side of the secondary cleaning bin is connected with an air outlet pipe, the top of the air outlet pipe is fixedly connected with a burner, and the left side of the dust removal chamber is connected with an exhaust gas inlet.

Preferably, the bottom end of the water guiding tank is three atomizing nozzles distributed at equal intervals.

Preferably, a water inlet is arranged on the left side of the water storage bin, and a water outlet is arranged at the bottom, and a valve is arranged on the water outlet.

Preferably, a liquid outlet is provided on the right side of the first recovery box, and the liquid outlet is provided with a valve, and the right side of the second recovery box is provided with a liquid outlet, and the liquid outlet is provided with a valve.

Preferably, the number of the heat-conducting bricks is several, and they are evenly distributed inside the cooling bin.

Preferably, the number of the reaction plates is several, and the reaction plates are inclined at a certain angle.

Preferably, the number of the grid plates is several, and the grid plates are staggered in the interior of the secondary trash removal bin.

The advantages of the utility model:

1. In this utility model, by arranging a liquid filling tank, a long pipe, a rotating nozzle, a reaction plate, etc., the number of reaction plates is several, and the reaction plate is inclined at a certain angle. The ammonia solution is spun and sprayed inside the primary desulfurization box, and the reaction plate has a barrier effect on the gas. Because the reaction plate is inclined, and the reaction plate can be contaminated with diethanol ammonia solution, with the rotating nozzle, the hydrogen sulfide and diethanol ammonia in the exhaust gas can be eliminated. The solution is fully contacted, which improves the analysis efficiency. The heat-conducting brick and the water-conducting tank are installed. The bottom end of the water-conducting tank is three atomizing nozzles distributed at equal distances, forming a three-sided water curtain. Contact to achieve the effect of rapidly reducing the temperature, and due to the specific heat capacity of the thermal conductive brick itself, it has excellent heat exchange, can quickly absorb heat, and can quickly cool down under the action of water, which solves the problem of the desulfurization tower at the exhaust gas inlet. The pre-cooling effect of hydrogen sulfide is not good, the temperature of the gas is not cooled to an appropriate temperature, and the analysis efficiency of the analysis tank is not high. In the analysis of hydrogen sulfide, the analysis cannot be maximized, resulting in the problem of incomplete desulfurization.

2. In this utility model, by setting the grid plates, the grid plates are staggered in the interior of the secondary impurity removal warehouse, which slows down the passing rate of the exhaust gas, and the slaked lime milk solution and the slaked lime milk solution are introduced into the secondary impurity removal chamber. With the cooperation of the grid plate, sulfur dioxide and carbon dioxide are efficiently absorbed, and calcium sulfite and calcium sulfate precipitates are formed, which are easy to remove, and a burner is installed. The current sulfur dioxide is only absorbed in a solution pool, and a solution pool is set for absorption. Due to the nature of the gas itself, the contact time with the solution is short, and the absorption efficiency is low.

Description of drawings:

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are just some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 is a schematic view of the front structure of the utility model.

FIG. 2 is a partial enlarged view of the structure A in FIG. 1 of the present utility model.

FIG. 3 is a three-dimensional view of the grid plate structure of the utility model.

Among them: 1. Dust removal bin; 2. Coarse coke particle filter; 3. Fine coke particle filter; 4. Coke particle recovery box; 5. The first connecting pipe; 6. The first fan; 7. Cooling bin; 8. Water guide tank; 9. Circulation pipe; 10. Water storage tank; 11. First pressure pump; 12. Return pipe; 13. Heat conduction brick; 14. Primary desulfurization tank; 15. Filling tank; 16. Long pipe; 17. Rotary nozzle; 18, reaction plate; 19, guide pipe; 20, second pressure pump; 21, first recovery tank; 22, second communication pipe; 23, second fan; 24, secondary impurity removal bin; 25 26, the second recovery box; 27, the gas outlet pipe; 28, the burner; 29, the grille plate; 30, the exhaust gas inlet.

Detailed ways:

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

As shown in Figure 1-3, a device for purifying and recovering coke oven exhaust gas includes a dust removal bin 1, a coarse coke particle filter 2 and a fine coke particle filter 3, the top inner wall of the dust removal bin 1 and the coarse coke particles The top of the filter screen 2 is fixedly connected, the bottom end of the coarse coke particle filter screen 2 is fixedly connected with the bottom inner wall of the dust removal bin 1, the top inner wall of the fine coke particle filter screen 3 is fixedly connected with the top inner wall of the dust removal bin 1, and the dust removal bin 1 is fixedly connected. The bottom is communicated with a coke particle recovery box 4, the right side of the dust removal bin 1 is communicated with a first communication pipe 5, the first communication pipe 5 is provided with a first fan 6, and the right end of the first communication pipe 5 is communicated with a cooling chamber 7, cooling The top of the tank 7 is fixedly connected with a water guide box 8, and the bottom end of the water guide box 8 is three atomizing nozzles that are equally spaced. The walls are fixedly connected, the bottom end of the cooling bin 7 is connected with a return pipe 12, the bottom end of the return pipe 12 is connected with a water storage bin 10, the left side of the water storage bin 10 is provided with a water inlet, and the bottom is provided with a water outlet. A valve is provided on the water outlet, and the left side of the water storage bin 10 is communicated with the top of the water guide tank 8 through a circulation pipe 9 , and a first pressure pump 11 is provided on the circulation pipe 9 .

There are heat-conducting bricks 13 fixedly connected between the front inner wall and the back inner wall of the cooling bin 7. The number of the heat-conducting bricks 13 is several, which are evenly distributed inside the cooling bin 7. The left side of the cooling bin 7 is connected with a primary desulfurization bin 14, and the primary desulfurization bin The interior of 14 is fixedly connected with reaction plates 18, the number of reaction plates 18 is several, and the reaction plates 18 are inclined at a certain angle, the top of the primary desulfurization bin 14 is fixedly connected with a liquid filling tank 15, and the liquid filling tank 15 is equipped with diethanol ammonia. Solution, the bottom end of the filling tank 15 is connected with a long pipe 16, the left end of the long pipe 16 extends to the interior of the primary desulfurization chamber 14, the left end of the long pipe 16 is connected with a rotating nozzle 17, and the bottom end of the primary desulfurization chamber 14 is connected with a guide. The flow pipe 19, the right end of the guide pipe 19 is connected with the first recovery box 21, and the second pressure pump 20 is arranged on the guide pipe 19, and the right side of the first recovery box 21 is provided with a liquid outlet, and the liquid outlet is on the There is a valve, the hydrogen sulfide to be analyzed flows into the first recovery box 21, and finally is made into sulfur, the right side of the second recovery box 26 is provided with a liquid outlet, and the liquid outlet is provided with a valve, the primary desulfurization bin 14 The right side is communicated with a second communication pipe 22, and the second communication pipe 22 is provided with a second fan 23, and the right side of the second communication pipe 22 is communicated with a secondary impurity-removing bin 24, and the interior of the secondary impurity-removing bin 24 is provided. There is a slaked lime milk solution, and the top of the secondary impurity removal bin 24 is provided with a liquid inlet, and the interior of the secondary impurity removal bin 24 is fixedly connected with a grid plate 29, the number of the grid plate 29 is several, and the grid plate 29 is in the The interior of the secondary cleaning bin 24 is staggered, the bottom of the secondary cleaning bin 24 is communicated with a sinker tube 25, and the sinker tube 25 is provided with a valve, and the bottom end of the sinker tube 25 is fixedly connected with a second recovery box 26. The second recovery box 26 flows into the precipitation, the right side of the secondary cleaning bin 24 is connected with an outlet pipe 27, the top of the outlet pipe 27 is fixedly connected with a burner 28, and the left side of the dust removal bin 1 is connected with an exhaust gas inlet 30.

When in use, the exhaust gas is introduced into the dust removal chamber 1 through the exhaust gas inlet 30, the first fan 6 is activated, the exhaust gas enters the cooling chamber 7, the first pressure pump 11 is activated, the water starts to circulate, the second fan 23 is activated, and the exhaust gas passes through a The desulfurization bin 14 and the secondary impurity removal bin 24 are processed in sequence, and finally discharged from the gas outlet pipe 27 .

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the within the scope of protection of the present invention.

Claims (7)

1. A device for purifying and recycling coke oven exhaust gas, comprising a dust removal bin (1), a coarse coke particle filter screen (2) and a fine coke particle filter screen (3), characterized in that the dust removal bin (1) ) is fixedly connected with the top of the coarse coke particle filter screen (2), the bottom end of the coarse coke particle filter screen (2) is fixedly connected with the bottom inner wall of the dust removal bin (1), and the fine coke particle filter screen The top inner wall of (3) is fixedly connected with the top inner wall of the dust removal bin (1). A communication pipe (5), a first fan (6) is arranged on the first communication pipe (5), a cooling bin (7) is communicated with the right end of the first communication pipe (5), and the cooling bin ( The top of 7) is fixedly connected with a water guide box (8), and the atomizing nozzle at the bottom end of the water guide box (8) extends to the interior of the cooling chamber (7) and is fixedly connected with the top wall of the cooling chamber (7). The bottom end of the silo (7) is communicated with a return pipe (12), the bottom end of the return pipe (12) is communicated with a water storage silo (10), and the left side of the water storage silo (10) is connected to the water guiding tank (8). ) is communicated through a circulation pipe (9), and the circulation pipe (9) is provided with a first pressure pump (11); A heat-conducting brick (13) is fixedly connected between the front inner wall and the back inner wall of the cooling bin (7), a primary desulfurization bin (14) is communicated with the left side of the cooling bin (7), and the primary desulfurization bin (14) A reaction plate (18) is fixedly connected inside, a liquid filling box (15) is fixedly connected to the top of the primary desulfurization bin (14), and a long pipe (16) is connected to the bottom end of the liquid filling box (15), so the The left end of the long pipe (16) extends to the interior of the primary desulfurization chamber (14), the left end of the long pipe (16) is communicated with a rotating nozzle (17), and the bottom end of the primary desulfurization chamber (14) is communicated with a guide. A flow pipe (19), the right end of the guide pipe (19) is communicated with a first recovery tank (21), and the guide pipe (19) is provided with a second pressure pump (20), the primary desulfurization bin ( 14) the right side is communicated with a second communication pipe (22), and the second communication pipe (22) is provided with a second fan (23), and the right side of the second communication pipe (22) is communicated with a secondary fan. The trash bin (24) is provided with a liquid inlet at the top of the secondary trash removal bin (24), and a grid plate (29) is fixedly connected inside the secondary trash removal bin (24). A sinker pipe (25) is communicated with the bottom of the miscellaneous silo (24), and the sinker pipe (25) is provided with a valve, and the bottom end of the sinker pipe (25) is fixedly connected with a second recovery box (26), A gas outlet pipe (27) is communicated with the right side of the secondary cleaning bin (24), a burner (28) is fixedly connected to the top of the gas outlet pipe (27), and the left side of the dust removal bin (1) is communicated with There is an exhaust gas inlet (30). 2 . The device for purifying and recycling coke oven exhaust gas according to claim 1 , wherein the bottom end of the water guiding tank ( 8 ) is three atomizing nozzles distributed at equal distances. 3 . 3. A device for purifying and recovering coke oven waste gas according to claim 1, wherein the left side of the water storage bin (10) is provided with a water inlet, and the bottom is provided with a water outlet, the There is a valve on the water outlet. 4. The device for purifying and recycling coke oven exhaust gas according to claim 1, wherein a liquid outlet is provided on the right side of the first recovery box (21), and the liquid outlet is provided with a liquid outlet. A valve, the right side of the second recovery box (26) is provided with a liquid outlet, and the liquid outlet is provided with a valve. 5 . The device for purifying and recovering coke oven exhaust gas according to claim 1 , wherein the number of the heat-conducting bricks ( 13 ) is several and uniformly distributed in the cooling bin ( 7 ). 6 . 6 . The device for purifying and recovering coke oven exhaust gas according to claim 1 , wherein the number of the reaction plates ( 18 ) is several, and the reaction plates ( 18 ) are inclined. 7 . 7 . The device for purifying and recovering coke oven exhaust gas according to claim 1 , wherein the number of the grid plates ( 29 ) is several, and the grid plates ( 29 ) are used for secondary impurity removal. 8 . Internal staggered distribution of bins (24).

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