Coking flue gas desulfurization and denitrification device

Abstract

The utility model belongs to the technical field of coking flue gas treatment, and particularly relates to a coking flue gas desulfurization and denitrification device which comprises an ash removal box, a smoke inlet pipe is arranged on the lower side of one side face of the ash removal box in a communicated mode, a smoke outlet pipe is arranged on one side of the upper side face of the ash removal box in a communicated mode, and an electric telescopic rod is arranged on the upper side of the ash removal box. The output end of the electric telescopic rod penetrates through the dust removal box to the inner side and is provided with a dust collection barrel, the lower side of the dust collection barrel communicates with a first dust falling pipe, a second dust falling pipe is inserted into the lower side of the first dust falling pipe, the lower end of the second dust falling pipe penetrates through the dust removal box to the lower side and communicates with a collection box, and a control valve is arranged on the lower side of the collection box; and one side of the control valve communicates with a pump machine. A large amount of dust particles can be removed in advance, and the situation that a large amount of dust particles are attached to a desulfurizing tower, a conveying pipeline, a separator and a dust remover and are difficult to remove, and the flue gas treatment effect is reduced is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of coking flue gas treatment, and particularly relates to a coking flue gas desulfurization and denitrification device. Background Art

[0002] Coking flue gas generally contains a large amount of dust particles. After desulfurization, the dust particles will be treated by a bag filter. However, a large amount of dust particles will greatly increase the pressure of the bag filter. Moreover, a large amount of desulfurization products will also be generated in the desulfurization process. If directly treated by the bag filter, some desulfurization products will be mixed with a large amount of dust particles, which is not conducive to the later recovery of desulfurization products. In addition, a large amount of dust particles have a high carbon content and certain adsorbability, and are easy to adhere to the desulfurization tower, conveying pipeline, separator and dust collector and are difficult to remove, reducing the effect of flue gas treatment. Content of the Utility Model

[0003] Aiming at the above problems, the purpose of the utility model is to provide a coking flue gas desulfurization and denitrification device to solve the problems that coking flue gas generally contains a large amount of dust particles. After desulfurization, the dust particles will be treated by a bag filter. However, a large amount of dust particles will greatly increase the pressure of the bag filter. Moreover, a large amount of desulfurization products will also be generated in the desulfurization process. If directly treated by the bag filter, some desulfurization products will be mixed with a large amount of dust particles, which is not conducive to the later recovery of desulfurization products. In addition, a large amount of dust particles have a high carbon content and certain adsorbability, and are easy to adhere to the desulfurization tower, conveying pipeline, separator and dust collector and are difficult to remove, reducing the effect of flue gas treatment.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a coking flue gas desulfurization and denitrification device, including an ash removal box. A smoke inlet pipe is communicated and arranged at the lower side of one side surface of the ash removal box. A smoke outlet pipe is communicated and arranged at one side of the upper side surface of the ash removal box. An electric telescopic rod is arranged above the ash removal box. The output end of the electric telescopic rod penetrates through the ash removal box to the inside and is provided with an ash collection cylinder. A first ash dropping pipe is communicated and arranged at the lower side of the ash collection cylinder. A second ash dropping pipe is inserted and arranged at the lower side of the first ash dropping pipe. The lower end of the second ash dropping pipe penetrates through the ash removal box to the lower side and is communicated and arranged with a collection box. A control valve is arranged at the lower side of the collection box. A pump is communicated and arranged at one side of the control valve.

[0005] The beneficial effects of the present utility model are as follows: When the coking flue gas passes through water, the gas will be discharged from the smoke outlet pipe, and the dust particles will float on the water surface. Then, the electric telescopic rod is started, and the output end of the electric telescopic rod drives the ash collection cylinder. When the dust particles accumulate to a certain extent, the upper side of the ash collection cylinder is controlled to be slightly lower than the water surface, so that the dust particles can flow into the ash collection cylinder under the action of the water flow, and then are sent into the collection box through the ash discharge pipe 1 and the ash discharge pipe 2. By regularly opening the control valve and the pump, the dust slurry water in the collection box can be discharged, which can remove a large amount of dust particles in advance, avoid a large amount of dust particles adhering to the desulfurization tower, the conveying pipeline, the separator and the dust collector and being difficult to remove, and reduce the effect of flue gas treatment.

[0006] For supplementing water into the ash removal box;

[0007] As a further improvement of the above technical solution: A water adding pipe is arranged on the side surface of the ash removal box above the smoke inlet pipe.

[0008] The beneficial effect of this improvement is: Through the water adding pipe, water is used to supplement the ash removal box.

[0009] For observing the accumulation degree of dust particles on the water surface in the ash removal box;

[0010] As a further improvement of the above technical solution: An observation window is provided on the side surface of the ash removal box corresponding to the ash collection cylinder.

[0011] The beneficial effect of this improvement is: An observation window is provided to observe the accumulation degree of dust particles on the water surface in the ash removal box.

[0012] For condensing the incoming flue gas;

[0013] As a further improvement of the above technical solution: A cooling tower is arranged on one side of the ash removal box. An inner tower layer is arranged inside the cooling tower. The inner tower layer divides the inside of the cooling tower into a condensation chamber and a water chamber. The output end of the smoke outlet pipe penetrates through the cooling tower and is communicated with the condensation chamber. A discharge pipe is arranged on the upper side of the cooling tower, and the discharge pipe is communicated with the condensation chamber. A water inlet pipe is arranged on the upper side of the side surface of the cooling tower, and a water outlet pipe is arranged on the lower side of the side surface of the cooling tower. Both the water inlet pipe and the water outlet pipe are communicated with the water chamber.

[0014] The beneficial effect of this improvement is: A cooling tower is provided. By passing water into the water chamber, the incoming flue gas in the condensation chamber is condensed, so that the water vapor evaporated with the flue gas from the ash removal box is condensed and left, avoiding adverse effects of the water vapor on subsequent processes such as desulfurization.

[0015] For discharging the water flowing back in the condensation chamber;

[0016] As a further improvement of the above technical solution: a return pipe is provided on the lower side of the cooling tower, the return pipe is communicated with the inner side of the inner tower layer, and the output end of the return pipe is communicated with a control valve.

[0017] The beneficial effect of this improvement is: a return pipe is provided to discharge the water returned in the condensation chamber.

[0018] In order to facilitate the discharge of water vapor and some sulfur-containing gases in the collection box;

[0019] As a further improvement of the above technical solution: a heat exchanger is provided on the outer side of the ash removal box, the output end of the heat exchanger is communicated with a water outlet pipe, and a drain pipe is provided at the output end of the heat exchanger.

[0020] The beneficial effect of this improvement is: a gas guide pipe is provided on the side of the collection box and communicated with the inner side of the smoke outlet pipe, so as to facilitate the discharge of water vapor and some sulfur-containing gases in the collection box into the cooling tower through the smoke outlet pipe together.

[0021] In order to increase the condensation effect;

[0022] As a further improvement of the above technical solution: a gas guide pipe is communicated and provided on one side of the collection box, and the gas guide pipe is communicated with the smoke outlet pipe.

[0023] The beneficial effect of this improvement is: condensation plates are evenly and staggeredly arranged on the inner side of the condensation chamber to increase the contact area, thereby increasing the condensation effect.

[0024] The parts not involved in this device are the same as the prior art or can be implemented by the prior art. Description of the Drawings

[0025] Figure 1 is the structural schematic diagram of the present utility model Figure 1 ;

[0026] Figure 2 is the structural schematic diagram of the present utility model Figure 2 ;

[0027] Figure 3 is the side view of the structure of the present utility model;

[0028] Figure 4 is the internal structure cross-sectional view of the ash removal box in the present utility model;

[0029] Figure 5 is the internal structure cross-sectional view of the cooling tower in the present utility model;

[0030] In the figure: 1. Ash removal box; 2. Smoke inlet pipe; 3. Smoke outlet pipe; 4. Electric telescopic rod; 5. Ash collection cylinder; 6. Ash discharge pipe 1; 7. Ash discharge pipe 2; 8. Collection box; 9. Control valve; 10. Pump; 11. Cooling tower; 12. Inner tower layer; 13. Heat exchanger; 14. Observation window. Detailed implementation mode

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present invention.

[0032] Such as Figure 1 — Figure 5As shown: A coking flue gas desulfurization and denitrification device, including an ash removal tank 1, a smoke inlet pipe 2 is connected and arranged at the lower side of one side of the ash removal tank 1, a smoke outlet pipe 3 is connected and arranged at one side of the upper side of the ash removal tank 1, an electric telescopic rod 4 is arranged above the ash removal tank 1, the output end of the electric telescopic rod 4 penetrates into the ash removal tank 1 and a dust collection cylinder 5 is arranged inside, a dust falling pipe one 6 is connected and arranged at the lower side of the dust collection cylinder 5, a dust falling pipe two 7 is inserted and arranged at the lower side of the dust falling pipe one 6, the lower end of the dust falling pipe two 7 penetrates into the ash removal tank 1 and a collection tank 8 is connected and arranged at the lower side, a control valve 9 is arranged at the lower side of the collection tank 8, a pump 10 is connected and arranged at one side of the control valve 9. When the coking flue gas passes through water, the gas will be discharged from the smoke outlet pipe 3, and the dust particles will float on the water surface. Then, start the electric telescopic rod 4, and the output end of the electric telescopic rod 4 drives the dust collection cylinder 5,When the dust particles accumulate to a certain extent, control the upper side of the ash collection cylinder 5 to be slightly lower than the water surface, so that the dust particles can flow into the ash collection cylinder 5 under the action of the water flow, and then be sent into the collection box 8 through the first ash discharge pipe 6 and the second ash discharge pipe 7. By regularly opening the control valve 9 and the pump 10, the dust slurry water in the collection box 8 can be discharged. A large amount of dust particles can be removed in advance to avoid a large number of dust particles adhering to the desulfurization tower, conveying pipeline, separator and dust collector, which are difficult to remove and reduce the effect of flue gas treatment. A water supply pipe is arranged on the side of the ash removal box 1 above the smoke inlet pipe 2. Through the water supply pipe, water is used to supplement the ash removal box 1. An observation window 14 is arranged on the side of the ash removal box 1 corresponding to the ash collection cylinder 5. The observation window 14 is arranged to observe the accumulation degree of dust particles on the water surface in the ash removal box 1. A cooling tower 11 is arranged on one side of the ash removal box 1. An inner tower layer 12 is arranged inside the cooling tower 11. The inner tower layer 12 divides the inside of the cooling tower 11 into a condensation chamber and a water chamber. The output end of the smoke outlet pipe 3 penetrates through the cooling tower 11 and is communicated with the condensation chamber. A discharge pipe is arranged on the upper side of the cooling tower 11. The discharge pipe is communicated with the condensation chamber. A water inlet pipe is arranged on the upper side of the side of the cooling tower 11. A water outlet pipe is arranged on the lower side of the side of the cooling tower 11. Both the water inlet pipe and the water outlet pipe are communicated with the water chamber. The cooling tower 11 is arranged to condense the flue gas entering the condensation chamber by passing water into the water chamber, so that the water vapor evaporated with the flue gas from the ash removal box 1 is condensed and left, avoiding adverse effects of the water vapor on subsequent desulfurization and other processes. A return pipe is arranged on the lower side of the cooling tower 11. The return pipe is communicated with the inside of the inner tower layer 12. The output end of the return pipe is communicated with the control valve 9. The return pipe is arranged to discharge the water flowing back in the condensation chamber. A heat exchanger 13 is arranged outside the ash removal box 1. The output end of the heat exchanger 13 is communicated with the water outlet pipe. A drain pipe is arranged at the output end of the heat exchanger 13. A guide pipe is arranged on the side of the collection box 8 and is communicated with the inside of the smoke outlet pipe 3, which is convenient to send the water vapor and part of the sulfur-containing gas in the collection box 8 into the cooling tower 11 through the smoke outlet pipe 3 together. A guide pipe is communicated and arranged on one side of the collection box 8. The guide pipe is communicated with the smoke outlet pipe 3. Condensation plates are evenly and staggeredly arranged inside the condensation chamber to increase the contact area and thus increase the condensation effect.,

[0033] The working principle and usage process of the present utility model:

[0034] Condensation plates are evenly and staggeredly arranged inside the condensation chamber.

[0035] During use, the coking flue gas is introduced into the ash removal tank 1 through the smoke inlet pipe 2. Water is contained inside the ash removal tank 1. When the coking flue gas passes through the water, the gas will be discharged from the smoke outlet pipe 3, and the dust particles will float on the water surface. Then, the electric telescopic rod 4 is started. The output end of the electric telescopic rod 4 drives the ash collection cylinder 5. When the dust particles accumulate to a certain extent, the upper side of the ash collection cylinder 5 is controlled to be slightly lower than the water surface, so that the dust particles can flow into the ash collection cylinder 5 under the action of the water flow. Then, they are sent into the collection box 8 through the ash discharge pipe 1 6 and the ash discharge pipe 2 7. By regularly opening the control valve 9 and the pump 10, the dust slurry water in the collection box 8 can be discharged. A large amount of dust particles can be removed in advance to avoid a large number of dust particles adhering to the desulfurization tower, conveying pipeline, separator and dust collector, which are difficult to remove and reduce the effect of flue gas treatment. In addition, during use, a water supply pipe is used to supplement water into the ash removal tank 1, and an observation window 14 is provided to observe the accumulation degree of dust particles on the water surface in the ash removal tank 1. In addition, a cooling tower 11 is provided. The flue gas entering the condensation chamber is condensed by passing water into the water chamber, so that the water vapor evaporated with the flue gas from the ash removal tank 1 is condensed and left, avoiding adverse effects of the water vapor on subsequent processes such as desulfurization. A return pipe is provided to discharge the water flowing back in the condensation chamber. A gas guide pipe is provided on the side of the collection box 8 and communicated with the inside of the smoke outlet pipe 3, so as to conveniently send the water vapor and some sulfur-containing gases in the collection box 8 into the cooling tower 11 through the smoke outlet pipe 3. Condensation plates are evenly and staggeredly arranged inside the condensation chamber to increase the contact area and thus enhance the condensation effect.

[0036] It should be noted that in this article, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0037] Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above examples is only used to help understand the method and its core idea of the present invention. The above is only the preferred implementation manner of the present invention. It should be noted that due to the limitation of literal expression, objectively there are infinite specific structures. For those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, should all be regarded as the protection scope of the present invention.

Claims

1. A coking flue gas desulfurization and denitrification device, characterized in that: It includes an ash removal box (1). A smoke inlet pipe (2) is communicatively connected to the lower side of one side surface of the ash removal box (1). A smoke outlet pipe (3) is communicatively connected to one side of the upper side surface of the ash removal box (1). An electric telescopic rod (4) is arranged on the upper side of the ash removal box (1). The output end of the electric telescopic rod (4) penetrates through the ash removal box (1) and is arranged inside with an ash collection cylinder (5). A first ash dropping pipe (6) is communicatively connected to the lower side of the ash collection cylinder (5). A second ash dropping pipe (7) is inserted into the lower side of the first ash dropping pipe (6). The lower end of the second ash dropping pipe (7) penetrates through the ash removal box (1) and is communicatively connected to a collection box (8) on the lower side. A control valve (9) is arranged on the lower side of the collection box (8). A pump (10) is communicatively connected to one side of the control valve (9).

2. The coking flue gas desulfurization and denitration device according to claim 1, characterized in that: A water adding pipe is arranged on the side surface of the ash removal box (1) above the smoke inlet pipe (2).

3. The coking flue gas desulfurization and denitrification device according to claim 1, wherein: An observation window (14) is provided on the side surface of the ash removal box (1) corresponding to the ash collection cylinder (5).

4. The coking flue gas desulfurization and denitrification device according to claim 1, wherein: A cooling tower (11) is arranged on one side of the ash removal box (1). An inner tower layer (12) is arranged inside the cooling tower (11). The inner tower layer (12) divides the inside of the cooling tower (11) into a condensation chamber and a water chamber. The output end of the smoke outlet pipe (3) penetrates through the cooling tower (11) and is communicatively connected to the condensation chamber. A discharge pipe is arranged on the upper side of the cooling tower (11). The discharge pipe is communicatively connected to the condensation chamber. A water inlet pipe is arranged on the upper side of the side surface of the cooling tower (11). A water outlet pipe is arranged on the lower side of the side surface of the cooling tower (11). Both the water inlet pipe and the water outlet pipe are communicatively connected to the water chamber.

5. The coking flue gas desulfurization and denitrification device according to claim 4, characterized in that: A return pipe is arranged on the lower side of the cooling tower (11). The return pipe is communicatively connected to the inside of the inner tower layer (12). The output end of the return pipe is communicatively connected to the control valve (9).

6. The coking flue gas desulfurization and denitrification device according to claim 1, characterized in that: A heat exchanger (13) is arranged on the outside of the ash removal box (1). The output end of the heat exchanger (13) is communicatively connected to the water outlet pipe. A drain pipe is arranged at the output end of the heat exchanger (13).

7. A coking flue gas desulfurization and denitration device according to claim 1, characterized in that: A gas guide pipe is communicatively connected to one side of the collection box (8). The gas guide pipe is communicatively connected to the smoke outlet pipe (3).

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