CN214861900U

CN214861900U - Chemical product VOC system containing coke filter

Info

Publication number: CN214861900U
Application number: CN202121003295.XU
Authority: CN
Inventors: 魏海鱼; 孙少峰; 姚强; 王建民
Original assignee: Shanxi Jinda Coal Chemical Technology Co ltd
Current assignee: Shanxi Jinda Coal Chemical Technology Co ltd
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2021-11-26
Anticipated expiration: 2031-05-12

Abstract

The utility model discloses a VOC system is produced in change that contains coke filter, including the intake pipe, the intake pipe carry coking VOC gas, intake-tube connection fan, the other end of fan passes through the bottom of first branch connection filter, the filter be provided with and support the sieve, the support sieve on be provided with the coke layer, the upper portion on coke layer is provided with the filter screen, the upper portion of filter just is provided with the blast pipe in the top of filter screen, the blast pipe connect the house steward of giving vent to anger, the house steward of giving vent to anger connect coke oven system. The utility model has the advantages of reasonable design, utilize the coke to have good adsorption characteristic, can get rid of the impurity particulate matter such as coke in the chemical production VOC gas through the coke filter, make before getting into the coke oven spark arrester cleaning cycle once prolong by 20 days for 3 months once, practiced thrift a large amount of manpower and materials.

Description

Chemical product VOC system containing coke filter

Technical Field

The utility model belongs to the technical field of the coking production, especially, relate to a change product VOC system that contains coke filter.

Background

During the production of coke, the components in the VOC gas produced in a chemical manner are complex, a large amount of pollutants are contained, and the adopted equipment is different according to different processes for treating the VOC gas. The VOC gas at each point can be collected and washed firstly, and finally is pressurized and conveyed to the basement of the coke oven through a VOC induced draft fan to be used as the air distribution of the combustion part of the coke oven, so that the coke oven flue gas is treated by the coke oven flue gas desulfurization and denitrification device to reach the emission standard. However, in the operation process, due to the complex components in the VOC gas, a small amount of impurities are still contained in the VOC gas after being washed, and when the VOC gas enters a basement of the coke oven, the impurities are attached to the surface of a flame arrester, so that the resistance of the flame arrester is increased, and the operation of the whole VOC system is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a VOC system is produced in ization that contains coke filter.

The utility model discloses a realize like this: the chemical product VOC system with the coke filter comprises an air inlet pipe, wherein the air inlet pipe is used for conveying coking VOC gas, the air inlet pipe is connected with a fan, the other end of the fan is connected with the bottom of the filter through a first branch pipe, a supporting sieve plate is arranged at the position, higher than the joint of the first branch pipe, of the bottom of the filter, a coke layer is arranged on the supporting sieve plate, the particle size of coke particles on the coke layer is 25-40mm, a filter screen is arranged on the upper portion of the coke layer and is used for preventing coke powder from entering a pipeline in the operation process, an exhaust pipe is arranged on the upper portion of the filter and above the filter screen and is connected with an exhaust header pipe, the exhaust header pipe is connected with a coke oven system, a first man hole is formed in the side wall of the coke layer of the filter, after the filter is used for a period of time, the coke needs to be replaced, the first manhole is arranged to facilitate replacement of the coke in the filter, the second manhole is arranged on the upper portion of the filter to facilitate maintenance of the filter screen, the upper portion of the filter is provided with a diffusing pipe above the filter screen, the diffusing pipe can diffuse VOC gas passing through the filter when a coke oven system is maintained or other conditions needing diffusing exist, the filter bottom is provided with a liquid discharge pipe below the support sieve plate, the coke needs to be periodically transported and cleaned in order to reduce filter resistance in the system operation process, and the liquid discharge pipe can discharge generated liquid.

The filter is a cylinder structure with the diameter of 2m and the height of 2.5m, and the thickness of the coke layer is 0.5-1.5m, which is enough to meet the requirements of coking production.

The bottom of the filter is provided with a support, so that the filter can be conveniently arranged at different positions.

The fan be connected the second branch pipe still, the second branch pipe lug connection house steward of giving vent to anger, first branch pipe, second branch pipe and blast pipe on all be provided with gas control valve. The second branch pipe is arranged, so that coke can be conveniently overhauled and replaced, when the coke filtering device normally runs, the gas control valves on the first branch pipe and the exhaust pipe are opened, the gas control valves on the second branch pipe and the diffusing pipe are closed, and gas enters the upper part from the lower part of the filter and comes out, so that the gas filtering effect is realized; when the filter needs to be overhauled, the gas control valve of the second branch pipe is opened, the gas control valves on the first branch pipe and the exhaust pipe are closed, gas directly enters the gas outlet main pipe through the second branch pipe, and the filter can be overhauled or coke can be replaced.

And a drain valve is arranged on the drain pipe, so that the control is convenient.

The diffusion pipe is also provided with a gas control valve, so that the diffusion is conveniently controlled.

The utility model has the advantages that: the utility model has the advantages of reasonable design, utilize the coke to have good adsorption characteristic, can get rid of the impurity particulate matter such as coke in the VOC gas that produces when coking production through the coke filter, make and get into flame arrester cleaning cycle extension before the coke oven (can once prolong to 3 months by 20 days generally), practiced thrift a large amount of manpower and materials. The filter is replaced by coke once in half a year, the filtered coke can be recycled, the occupied area of the equipment is small, the investment cost is low, and the operation is simple.

Drawings

Fig. 1 is a schematic structural view of the present invention;

in the figure: 1-air inlet pipe, 2-fan, 3-filter, 301-bracket, 302-support sieve plate, 303-first manhole, 304-coke, 305-filter screen, 306-second manhole, 307-diffusing pipe, 308-exhaust pipe, 309-liquid discharge pipe, 4-first branch pipe, 5-second branch pipe, 6-air outlet main pipe, 7-gas control valve and 8-liquid discharge valve.

Detailed Description

In order to understand the technical solution of the present invention more clearly, the present invention will be further explained with reference to the accompanying drawings.

The chemical product VOC system with the coke filter shown in figure 1 comprises an air inlet pipe 1, wherein the air inlet pipe 1 is used for conveying coking VOC gas, the air inlet pipe 1 is connected with a fan 2, the other end of the fan 2 is connected with the bottom of a filter 3 through a first branch pipe 4, a support sieve plate 302 is arranged at the position, higher than the joint of the first branch pipe 4, of the bottom of the filter 3, a coke layer 304 is arranged on the support sieve plate 302, the particle size of coke particles of the coke layer 304 is 25-40mm, a filter screen 305 is arranged on the upper portion of the coke layer 304 to prevent coke powder from entering a pipeline in the operation process, an exhaust pipe 308 is arranged on the upper portion of the filter 3 and above the filter screen 305, the exhaust pipe 308 is connected with an exhaust header pipe 6, the exhaust header pipe 6 is connected with a coke oven system to be used as a combustion part of the coke oven to distribute air, a first person hole 303 is arranged on the side wall of the coke layer of the filter 3, after the filter 3 is used for a period of time, the coke needs to be replaced, the first manhole 303 is arranged to facilitate replacement of the coke in the filter 3, the second manhole 306 is arranged at the upper part of the filter 3 to facilitate maintenance of the filter screen 305 and the upper part of the filter 3, the upper part of the filter 3 is provided with the diffusing pipe 307 above the filter screen, when a coke oven system is maintained or other conditions needing diffusing exist, the VOC gas passing through the filter 3 can be diffused by the diffusing pipe 307, the bottom of the filter 3 is provided with the liquid discharge pipe 309 below the support screen plate 302, the coke needs to be periodically transported and cleaned in order to reduce resistance of the filter 3 in the operation process of the system, and the liquid discharge pipe 309 can discharge the generated liquid. The filter 3 is a cylinder structure with the diameter of 2m and the height of 2.5m, and the thickness of the coke layer is 0.5-1.5m, which is enough to meet the requirements of coking production. The bottom of the filter 3 is provided with a bracket 301, which is convenient for the filter 3 to be arranged at different positions. The fan 2 is also connected with a second branch pipe 5, the second branch pipe 5 is directly connected with an air outlet main pipe 6, and the first branch pipe 4, the second branch pipe 5 and the exhaust pipe 308 are all provided with a gas control valve 7. In normal operation, the gas control valves on the first branch pipe 4 and the exhaust pipe 308 are opened, the gas control valves on the second branch pipe 5 and the diffusing pipe 307 are closed, and gas enters from the lower part of the filter 7 and flows out from the upper part of the filter to play a role in filtering VOC gas; when the filter needs to be overhauled, the gas control valve of the second branch pipe 5 is opened, the gas control valves on the first branch pipe 4 and the exhaust pipe 308 are closed, and the chemical product VOC gas directly enters the gas outlet main pipe 6 through the second branch pipe 5, so that the filter can be overhauled or the coke can be replaced. And a drain valve 8 is arranged on the drain pipe 309, so that the control is convenient. The diffusing pipe 307 is also provided with a gas control valve 7, so that the diffusing is conveniently controlled.

The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.

Claims

1. The chemical product VOC system containing the coke filter is characterized by comprising an air inlet pipe, wherein the air inlet pipe is used for conveying coking VOC gas, the air inlet pipe is connected with a fan, the other end of the fan is connected with the bottom of the filter through a first branch pipe, a supporting sieve plate is arranged at the position, higher than the joint of the first branch pipe, of the bottom of the filter, a coke layer is arranged on the supporting sieve plate, the particle size of coke particles on the coke layer is 25-40mm, a filter screen is arranged at the upper part of the coke layer, an exhaust pipe is arranged at the upper part of the filter and above the filter screen and connected with an exhaust main pipe, the exhaust main pipe is connected with a coke oven system, a first manhole is arranged on the side wall of the coke layer of the filter, a second manhole is arranged at the upper part of the filter, and a diffusing pipe is arranged at the upper part of the filter and above the filter screen, and a liquid discharge pipe is arranged at the bottom of the filter and below the support sieve plate.

2. The VOC production system with a coke filter of claim 1, wherein said filter is a cylindrical structure with a diameter of 2m and a height of 2.5m, and the thickness of said coke layer is 0.5-1.5 m.

3. The VOC production system with a coke filter of claim 1 wherein said filter bottom is provided with a bracket.

4. The system of claim 1, wherein the blower is further connected to a second branch pipe, the second branch pipe is directly connected to the gas outlet main, and the first branch pipe, the second branch pipe and the gas outlet pipe are all provided with gas control valves.

5. The VOC production system with a coke filter as claimed in claim 1, wherein a drain valve is arranged on the drain pipe.

6. The VOC production system with a coke filter of claim 1, wherein said blow-off line is also provided with a gas control valve.