CN212999300U

CN212999300U - Coke oven flue waste gas desulfurization device

Info

Publication number: CN212999300U
Application number: CN202021584827.9U
Authority: CN
Inventors: 陈学才; 李强; 方亮青; 甘恢玉
Original assignee: Maanshan Iron and Steel Co Ltd
Current assignee: Maanshan Iron and Steel Co Ltd
Priority date: 2021-03-10
Filing date: 2021-03-10
Publication date: 2021-04-20
Anticipated expiration: 2031-03-10

Abstract

The utility model discloses a coke oven flue gas desulfurization device, include: ammonia pipe, electric valve, spray header, ammonia tank, water collecting tank; one end of the ammonia water pipe is connected with the purification system, the other end of the ammonia water pipe is connected with a spray head, and the spray head is arranged in a flue of the coke oven; the electric valve is connected in series with the middle part of the ammonia water pipe; the ammonia water tank is arranged in the flue and is positioned at the lower part of the spray header, the bottom of the ammonia water tank is communicated with the water collection tank through a communicating pipe, and the water collection tank is arranged outside the flue. The utility model relates to a coke oven flue gas desulfurization device, the device can effectively get rid of the sulfur dioxide in the coke oven flue, and the construction period is short, the small investment, has reduced emission pollution, has protected the atmospheric quality.

Description

Coke oven flue waste gas desulfurization device

Technical Field

The utility model belongs to the environmental protection engineering field especially relates to a coke oven flue gas desulfurization device.

Background

In the coking production, the waste gas discharged by the coke oven contains a large amount of sulfur dioxide, and if the desulfurization treatment is not carried out in time, a large amount of sulfur dioxide is discharged into the air through a flue, so that the environment is polluted. The desulfurization of coke oven waste gas belongs to the flue gas desulfurization technology, the currently generally adopted flue gas desulfurization methods are divided into a dry method and a wet method, the types of desulfurization processes are more, but the defects of long construction period, high investment, large occupied area and the like of a desulfurization device exist, and particularly, the problem of construction site limitation exists for the transformation of some old coking enterprises. The above situation severely restricts the implementation of the environmental protection requirement.

SUMMERY OF THE UTILITY MODEL

In order to solve the existing problem, the utility model provides a coke oven flue gas desulfurization device, the device can effectively get rid of the sulfur dioxide in the coke oven flue, and the construction period is short, the small investment, has reduced emission pollution, has protected the atmospheric quality.

In order to achieve the above object, the present invention adopts the following technical solutions, including:

ammonia pipe, electric valve, spray header, ammonia tank, water collecting tank; one end of the ammonia water pipe is connected with the purification system, the other end of the ammonia water pipe is connected with a spray head, and the spray head is arranged in a flue of the coke oven; the electric valve is connected in series with the middle part of the ammonia water pipe; the ammonia water tank is arranged in the flue and is positioned at the lower part of the spray header, the bottom of the ammonia water tank is communicated with the water collection tank through a communicating pipe, and the water collection tank is arranged outside the flue.

Further, the electric valve is electrically connected with a PLC (programmable logic controller) in the central control room.

Furthermore, the spray header comprises a long-strip-shaped pipeline and nozzles which are uniformly distributed along the length direction of the pipeline, and the nozzles are in threaded connection with the pipeline.

Furthermore, a filter element is arranged at the upper end inside the nozzle.

Furthermore, the ammonia water pipe is also connected with a pressure sensor, and the pressure sensor is electrically connected with a PLC (programmable logic controller) in a central control room.

Furthermore, a sulfur dioxide detector is further installed in the outlet of the flue, and the sulfur dioxide detector is electrically connected with a PLC (programmable logic controller) in the central control room.

Furthermore, a liquid level sensor is further installed in the water collecting tank, and the liquid level sensor is electrically connected with a PLC (programmable logic controller) in the central control room.

Furthermore, the water collecting tank is connected with a water suction pump through a pipeline, and the water suction pump is electrically connected with a PLC (programmable logic controller) in the central control room.

The utility model relates to a coke oven flue gas desulfurization device, the device can effectively get rid of the sulfur dioxide in the coke oven flue, and the construction period is short, the small investment, has reduced emission pollution, has protected the atmospheric quality.

Drawings

Fig. 1 is a process layout diagram of the present invention in combination with associated production equipment.

Fig. 2 is a schematic view of the structure of the middle shower head of the present invention.

Detailed Description

The present invention will be described in further detail below with reference to the attached drawings so as to enable those skilled in the art to more clearly understand the invention.

As shown in fig. 1, the utility model comprises: an ammonia water pipe 1, an electric valve 2, a spray header 3, an ammonia water tank 4 and a water collecting tank 6; one end of the ammonia water pipe is connected with the purification system 8, and the other end of the ammonia water pipe is connected with a spray head which is arranged in a flue 12 of a coke oven 11; the electric valve is connected in series with the middle part of the ammonia water pipe; the ammonia water tank is arranged in the flue and positioned at the lower part of the spray header, the bottom of the ammonia water tank is communicated with a water collecting tank through a communicating pipe 5, and the water collecting tank is arranged outside the flue.

Further, the electric valve is electrically connected to a PLC controller in the central control room 10.

Further, as shown in fig. 2, the spray header comprises an elongated pipe 3-1 and nozzles 3-2 uniformly distributed along the length direction of the pipe, wherein the nozzles are in threaded connection with the pipe.

Furthermore, a filter element 3-3 is arranged at the upper end of the inner part of the nozzle. So as to prevent impurities in the ammonia water from blocking the water outlet hole of the nozzle.

Further, as shown in fig. 1, the ammonia water pipe is also connected with a pressure sensor 9, and the pressure sensor is electrically connected with a PLC controller in a central control room 10.

Furthermore, a sulfur dioxide detector 13 is also installed in the outlet of the flue, and the sulfur dioxide detector is electrically connected with a PLC (programmable logic controller) in the central control room 10.

Further, a liquid level sensor 14 is also installed in the water collecting tank, and the liquid level sensor is electrically connected with a PLC (programmable logic controller) in the central control room 10.

Further, the water collecting tank is connected with a water suction pump 7 through a pipeline, and the water suction pump is electrically connected with a PLC (programmable logic controller) in the central control room 10.

When in desulfurization, the electric valve is opened, the spray header sprays ammonia water, the ammonia water and sulfur dioxide in the flue gas generate chemical reaction to achieve the effect of desulfurization, the ammonia water falling into the ammonia water tank flows into the water collecting tank and is sucked out by the water suction pump and conveyed to the next procedure for use; the pressure sensor 9 senses the pressure in the ammonia water pipe to the PLC, and the PLC controls the conveying of ammonia water; the electric valve and the sulfur dioxide detector are electrically connected with a PLC (programmable logic controller) in the central control room, and the PLC opens or closes the electric valve according to the sulfur dioxide concentration fed back by the sulfur dioxide detector; the liquid level sensor and the water suction pump are electrically connected with a PLC (programmable logic controller) in the central control room, and the PLC controls the water suction pump to be started according to the liquid level condition transmitted by the liquid level sensor.

Claims

1. A coke oven flue waste gas desulfurization device comprises an ammonia water pipe (1), an electric valve (2), a spray header (3), an ammonia water tank (4) and a water collecting tank (6); the method is characterized in that: one end of the ammonia water pipe is connected with the purification system (8), the other end of the ammonia water pipe is connected with a spray head, and the spray head is arranged in a flue (12) of the coke oven (11); the electric valve is connected in series with the middle part of the ammonia water pipe; the ammonia water tank is arranged in the flue and is positioned at the lower part of the spray header, the bottom of the ammonia water tank is communicated with the water collecting tank through a communicating pipe (5), and the water collecting tank is arranged outside the flue.

2. The coke oven flue gas desulfurization apparatus of claim 1, wherein: the electric valve is electrically connected with a PLC (programmable logic controller) in the central control room (10).

3. The coke oven flue gas desulfurization apparatus according to claim 1 or 2, characterized in that: the spray header comprises a long-strip-shaped pipeline (3-1) and nozzles (3-2) which are uniformly distributed along the length direction of the pipeline, and the nozzles are in threaded connection with the pipeline.

4. The coke oven flue gas desulfurization device of claim 3, wherein: and a filter element (3-3) is arranged at the upper end inside the nozzle.

5. The coke oven flue gas desulfurization apparatus of claim 1, wherein: the ammonia water pipe is also connected with a pressure sensor (9), and the pressure sensor is electrically connected with a PLC (programmable logic controller) in a central control room (10).

6. The coke oven flue gas desulfurization apparatus of claim 1, wherein: and a sulfur dioxide detector (13) is also installed in the outlet of the flue and is electrically connected with a PLC (programmable logic controller) in the central control room (10).

7. The coke oven flue gas desulfurization apparatus of claim 1, wherein: and a liquid level sensor (14) is also installed in the water collecting tank and is electrically connected with a PLC (programmable logic controller) in the central control room (10).

8. The coke oven flue gas desulfurization apparatus of claim 1, wherein: the water collecting tank is connected with a water suction pump (7) through a pipeline, and the water suction pump is electrically connected with a PLC (programmable logic controller) in the central control room (10).