阅读说明：本技术 焦炉上升管烟气处理系统 (Coke oven ascending pipe flue gas treatment system ) 是由 刘森 于 2019-01-04 设计创作，主要内容包括：本发明提出了一种焦炉上升管烟气的收集系统和处理系统,烟气先收集后进行净化处理。在普通上升管或有余热回收装置的上升管上部安装一个吸风罩,与排风机相连,吸走上升管端盖打开时冒出的白烟,直接通过管道排到焦炉进风管；或安装直接管道,管道经过阀门和排风机相连,风机吸走上升管端盖打开排放的废烟气,直接通过管道排到焦炉进风管。焦炉安装有除尘装置,也可以直接通过管道排到除尘装置,除尘装置可以是干法或湿法除尘设备,或脱硫及脱硝设备。本发明提出的上升管烟气处理方法,能够彻底解决目前上升管冒青烟的问题,特别是上升管安装余热回收装置后冒白烟或黄烟的问题,有效解决出焦时上升管废气对环境的污染。(The invention provides a collecting system and a processing system for flue gas of a coke oven ascending pipe. An air suction hood is arranged on the upper part of a common ascending pipe or an ascending pipe with a waste heat recovery device and is connected with an exhaust fan, white smoke emitted when an end cover of the ascending pipe is opened is sucked away, and the white smoke is directly discharged to an air inlet pipe of the coke oven through a pipeline; or a direct pipeline is installed, the pipeline is connected with an exhaust fan through a valve, and the waste flue gas discharged by opening an end cover of the ascending pipe is sucked away by the fan and is directly discharged to the air inlet pipe of the coke oven through the pipeline. The coke oven is provided with a dust removal device, and can also be directly discharged to the dust removal device through a pipeline, and the dust removal device can be dry or wet dust removal equipment or desulfurization and denitrification equipment. The method for treating the flue gas of the ascending pipe can thoroughly solve the problem that the existing ascending pipe emits green smoke, particularly the problem that the ascending pipe emits white smoke or yellow smoke after a waste heat recovery device is installed, and effectively solves the problem of environmental pollution caused by the waste gas of the ascending pipe during coke discharging.)

1. And a smoke collecting device is arranged at the end cover of the ascending pipe.

2. The design of different shapes of the air suction hood based on the flue gas collecting device of claim 1 is that the air suction hood is connected with a fan through a pipeline.

3. The design of the duct based on the flue gas collecting apparatus of claim 1, wherein the duct collects flue gas from the rising pipe through a valve switch.

4. And a flue gas treatment device is arranged behind the flue gas collecting device.

5. According to the claim 4, the flue gas is discharged into the coke oven air inlet or the air inlet pipeline through the fan.

6. According to the claim 4, the flue gas is treated by the fan and the flue gas treatment system and then discharged, and the flue gas can also be discharged by the flue gas treatment system and the fan.

7. According to the method, the smoke of each ascending pipe is subjected to valve switching and main pipe post-centralized treatment; each riser can also be treated separately.

Technical Field

The invention relates to a device which is applied to the field of raw gas treatment and waste heat recovery of a coke oven, can treat and comprehensively utilize polluted gas discharged from a riser during coke discharging of the coke oven, and achieves the effect of reducing discharge during coke discharging of the coke oven.

Background

The traditional coke oven has the operation process that the end cover of the ascending pipe needs to be opened during coke discharging and is directly emptied after being opened, and no flue gas absorption and treatment device is arranged. In the figure 1, green smoke is emitted, and blue smoke contains dust and polluting gases. The existing treatment mode is that a waste heat recovery device is arranged on a coke oven ascending pipe, and after the waste heat recovery device is installed, when the coke oven is burnt and the top cover of the ascending pipe is opened, white smoke and yellow smoke are emitted, namely, incompletely treated waste gas also causes environmental pollution. In order to thoroughly solve the problem of pollution gas emission of the ascending pipe, the invention provides a brand-new ascending pipe flue gas treatment method, which can thoroughly solve the problem that the existing ascending pipe emits green smoke, particularly the problem that the ascending pipe emits white smoke or yellow smoke after a waste heat recovery device is installed, and effectively solve the problem of pollution of the waste gas of the ascending pipe to the environment during coke discharging.

Disclosure of Invention

The invention provides a collecting system and a processing system for flue gas of a coke oven ascending pipe. The system consists of a flue gas collecting device and a flue gas processing device. The flue gas collecting system is connected with the flue gas processing system. See figure 2.

The flue gas collecting device is used for collecting the flue gas discharged when the ascending pipe of the coke oven is opened.

The flue gas treatment equipment comprehensively utilizes the flue gas collected by the flue gas collection equipment.

Drawings

FIG. 1 is a process diagram of the operation of a conventional coke oven.

FIG. 2 is a process diagram of an example of an application 1 of a flue gas collection and treatment system.

FIG. 3 is a process diagram of an example of an application 2 of a flue gas collection and treatment system.

FIG. 4 is a process diagram of an example of an application 1 of a flue gas collection and treatment system.

FIG. 5 is a process diagram of an example of an application 2 of a flue gas collection and treatment system.

In the figure:

1. the device comprises a coke oven, 2, 3, a valve, 4, a main flue pipe, 5, a fan, 6, a coke oven air inlet pipeline, 7, a crude gas main pipeline, 8, a riser pipe, 9, a bridge pipe, 10, a crude gas main pipeline, 11, a coke oven and 12, and a dust removal device.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.

Application example 1

An air suction hood is arranged on the upper part of a common ascending pipe or an ascending pipe with a waste heat recovery device, the air suction hood is connected with an exhaust fan through a pipeline, and the fan sucks white smoke emitted when an end cover of the ascending pipe is opened and directly discharges the white smoke to an air inlet pipe of a coke oven through the pipeline. In order to save energy, a valve can be designed behind each air suction cover, when the ascending pipe emits smoke, the air suction cover sucks air, and the air suction cover is closed at other times. See figure 2.

Application example 2

A direct pipeline is arranged on the upper part of a common ascending pipe or an ascending pipe with a waste heat recovery device, the pipeline is connected with an exhaust fan through a valve, and the exhaust gas discharged by opening an end cover of the ascending pipe is sucked away by the fan and is directly discharged to an air inlet pipe of the coke oven through the pipeline. See figure 3.

Application example 3

An air suction cover is arranged on the upper part of a common ascending pipe or an ascending pipe with a waste heat recovery device, the air suction cover is connected with an exhaust fan through a pipeline, the exhaust fan sucks waste flue gas discharged when an end cover of the ascending pipe is opened, and the waste flue gas is directly discharged to a dust removal device through the pipeline, and the dust removal device can be dry method or wet method dust removal equipment or desulfurization and denitration equipment, but is not limited to the above. See figure 4.

Application example 4

The upper part of a common ascending pipe or an ascending pipe with a waste heat recovery device is provided with a direct pipeline, the pipeline is connected with an exhaust fan through a valve, a fan sucks waste flue gas discharged when an end cover of the ascending pipe is opened, and the waste flue gas is directly discharged to a dust removal device through the pipeline, and the dust removal device can be dry method or wet method dust removal equipment or desulfurization and denitration equipment, but the method is not limited to the above. See figure 5.