CN215828824U

CN215828824U - Dry method dust removal box body diffuses and retrieves coal gas device

Info

Publication number: CN215828824U
Application number: CN202121835430.7U
Authority: CN
Inventors: 乔东峰
Original assignee: Shanxi Jinnan Iron and Steel Group Co Ltd
Current assignee: Shanxi Jinnan Iron and Steel Group Co Ltd
Priority date: 2021-08-07
Filing date: 2021-08-07
Publication date: 2022-02-15
Anticipated expiration: 2031-08-07

Abstract

The utility model discloses a gas diffusing and recycling device for a dry dedusting box, which comprises a plurality of boxes for dedusting, wherein an outlet of each box is communicated with a dry dedusting clean gas main pipeline through a first blind plate valve and a first butterfly valve, a second blind plate valve and a second butterfly valve are arranged at the position of the outlet of each box and on a tapping branch pipe in front of the first blind plate valve and the first butterfly valve, the second blind plate valve and the second butterfly valve on each dedusting box are connected in series through a main pipeline, one end of the main pipeline is closed, the other end of the main pipeline is communicated with an outer net low-pressure gas pipe network, and a third butterfly valve and a third blind plate valve are arranged at one end of the main pipeline, which is communicated with the outer net low-pressure gas pipe network. The utility model effectively recovers the air-exhausted coal gas when the box body is stopped, so that the energy is effectively recovered, the environmental pollution is reduced, the safety is realized, and the noise is reduced; the recovery rate of the cut coal gas of the single box body of the blast furnace reaches more than 80 percent, the low-carbon emission requirement of the cut coal gas of the single box body of the blast furnace is met, the safety guarantee of personnel is improved, and the production noise is reduced.

Description

Dry method dust removal box body diffuses and retrieves coal gas device

Technical Field

The utility model belongs to the field of blast furnace gas recovery, and particularly relates to a gas diffusing and recovering device for a dry dedusting box.

Background

When the single-box coal gas cutting operation of the dry dedusting of the blast furnace of the domestic iron and steel enterprises at the present stage is carried out, all the coal gas in the box body is directly discharged to the air, and the operation has the problems and the defects that: the environment is polluted, energy is wasted, the emission noise is large, and certain potential safety hazards exist when the coal gas is discharged into the air.

Disclosure of Invention

In view of this, the utility model aims to provide a device for diffusing and recovering coal gas for a dry dedusting box.

In order to achieve the purpose, the technical scheme is as follows:

the utility model provides a dry process dust removal box diffuses recovery coal gas device, includes a plurality of boxes that are used for removing dust, the box export is through first blind plate valve and first butterfly valve and the clean coal gas main line intercommunication of dry process dust removal, box export position, and install second blind plate valve and second butterfly valve on the shunting bleeder before first blind plate valve and first butterfly valve, second blind plate valve and second butterfly valve on every dust removal box adopt the trunk line to establish ties, trunk line one end is sealed, and the other end and outer net low pressure coal gas pipe network intercommunication, and simultaneously, third butterfly valve and third blind plate valve are installed to the one end of trunk line intercommunication outer net low pressure coal gas pipe network.

As a further improvement of the utility model, the first blind plate valve and the first butterfly valve are DN800 pneumatic butterfly valves and manual blind plate valves.

As a further improvement of the utility model, the second blind plate valve and the second butterfly valve as well as the third butterfly valve and the third blind plate valve are DN200 pneumatic butterfly valves and manual blind plate valves;

in addition, the main pipeline adopts a pipeline with DN200 specification.

The utility model has the beneficial effects that: the utility model effectively recovers the air-exhausted coal gas when the box body is stopped, so that the energy is effectively recovered, the environmental pollution is reduced, the safety is realized, and the noise is reduced;

the recovery rate of the blast furnace single box body cut coal gas reaches more than 80%, the low-carbon emission requirement of the blast furnace single box body cut coal gas is met, meanwhile, the safety guarantee of personnel is improved, and the production noise is reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic structural diagram of the present invention.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Please refer to fig. 1

The utility model provides a dry process box diffuses recovery gas device, includes a plurality of boxes 1 that are used for removing dust, 1 export of box is through first blind plate valve 2 and first butterfly valve 3 and the clean gas main line 4 intercommunication of dry process dust removal, 1 exit position of box, and install second blind plate valve 6 and second butterfly valve 7 on the bleeder 5 of shunting before first blind plate valve 2 and first butterfly valve 3, second blind plate valve 6 and second butterfly valve 7 on every box 1 adopt trunk line 8 to establish ties, trunk line 8 adopts the pipeline of DN200 specification, 8 one end of trunk line are sealed, and the other end and outer net low pressure gas pipe network 9 intercommunication, and simultaneously, third butterfly valve 10 and third blind plate valve 11 are installed to the one end of 8 intercommunication outer net low pressure gas pipe networks 9 of trunk line.

The first blind plate valve 2 and the first butterfly valve 3 are DN800 pneumatic butterfly valves and manual blind plate valves; the second blind plate valve 6, the second butterfly valve 7, the third butterfly valve 10 and the third blind plate valve 11 are both DN200 pneumatic butterfly valves and manual blind plate valves.

The method comprises the following operation steps: closing and needing to stop 1 raw coke oven of box, clean gas butterfly valve, opening 8 terminal third blind plate valves 11 of trunk line and the second blind plate valve 6 of this box 1, opening 8 terminal third butterfly valves 10 of trunk line and the operation of starting to arrange pressure of this box 1 second butterfly valve 7, when box 1 internal pressure is balanced with pipe network pressure, closing 8 terminal third butterfly valves 10 of trunk line and this box 1 second butterfly valve 7, open 1 relief valve of this box and drain the residual pressure, close 8 terminal third blind plate valves 11 of trunk line and this box 1 second blind plate valve 6, the operation finishes.

The working principle is as follows: the high-pressure gas is connected to a low-pressure gas pipe network through a pipeline and a valve, and the high pressure is discharged to the low pressure through the valve control until the pressures on the two sides are balanced.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a dry process dust removal box diffuses recovery coal gas device, includes a plurality of boxes that are used for removing dust, the box export communicates its characterized in that through first blind plate valve and first butterfly valve and the clean coal gas main line of dry process dust removal:

the box outlet position, and install second blind plate valve and second butterfly valve on the shunting bleeder before first blind plate valve and first butterfly valve, second blind plate valve and second butterfly valve on every dust removal box adopt the trunk line to establish ties, trunk line one end is sealed, and the other end and outer net low pressure coal gas pipe network intercommunication, simultaneously, third butterfly valve and third blind plate valve are installed to the one end of trunk line intercommunication outer net low pressure coal gas pipe network.

2. The device for diffusing and recovering coal gas of the dry dedusting box body according to claim 1, is characterized in that: the first blind plate valve and the first butterfly valve are DN800 pneumatic butterfly valves and manual blind plate valves.

3. The device for diffusing and recovering coal gas of the dry dedusting box body according to claim 1, is characterized in that: the second blind plate valve and the second butterfly valve as well as the third butterfly valve and the third blind plate valve are a pneumatic butterfly valve and a manual blind plate valve of DN 200;

in addition, the main pipeline adopts a pipeline with DN200 specification.