A coke oven circulating flue gas double control pipe network device and its application method

A technology for circulating flue gas and coke ovens, which is applied to coke ovens, separation methods, heating of coke ovens, etc., can solve the problems of difficult optimization and reconstruction of coke ovens, excessive nitrogen oxide emissions of coke ovens, etc., and achieves low construction difficulty, The effect of reducing the concentration of oxygen and low cost

Active Publication Date: 2022-03-08
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to adopt the flue gas circulation technology to solve the problem that coke oven optimization and transformation are difficult when the coke oven nitrogen oxide discharge exceeds the standard. It provides a coke oven circulating flue gas double control pipe network device and its use method, which are low cost. The existing coke oven has been optimized and transformed with low cost and low construction difficulty, and the problem of excessive nitrogen oxide emission from the coke oven has been solved

Method used

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  • A coke oven circulating flue gas double control pipe network device and its application method
  • A coke oven circulating flue gas double control pipe network device and its application method
  • A coke oven circulating flue gas double control pipe network device and its application method

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Embodiment 1

[0064] combine Figure 1-4 , the coke oven circulating flue gas dual control pipe network device in this embodiment includes a coke oven, the coking chamber 101 and the combustion chamber 102 in the coke oven are arranged alternately, and the combustion chamber 102 is separated into two parts connected to each other by a vertical fire channel 103 , the bottom of one part is provided with the combustion chamber port A 1021, and the bottom of the other part is provided with the combustion chamber port B 1022; it also includes the flue gas main pipe 9, the circulation fan 10 and the mixing box 12, the flue gas main pipe 9 and the coke oven The chimney 11 is connected, and a circulation fan 10 is installed on the flue gas main pipe 9; the mixing box 12 is divided into two disconnected spaces, and each space is connected to the flue gas main pipe 9 through a separate flue gas branch pipe 8; the combustion chamber port A 1021 is respectively connected with the chimney 11 , a space i...

Embodiment 2

[0084] combine Figure 6 , the coke oven circulating flue gas dual control pipe network device of this embodiment has basically the same structure as that of Embodiment 1, the difference is that in order to ensure that all the sub-transmission gears 3 are stably and synchronously driven, another The improved structure is specifically as follows: Compared with Embodiment 1, in this embodiment, the setting of the total transmission rack 2 is canceled, but the transmission between two adjacent sub-transmission gears 3 is carried out by a chain 13, and a certain sub-transmission gear The gear 3 is driven by a motor, so that when a certain sub-transmission gear 3 is driven by the motor, through the transmission of the chain 13 between two adjacent sub-transmission gears 3, all sub-transmission gears 3 have realized the same direction and synchronous rotation.

[0085] combine Figure 7 , the method for using the coke oven circulating flue gas dual control pipe network device of th...

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Abstract

The invention discloses a coke oven circulating flue gas double-control pipe network device and an application method thereof, belonging to the field of coke oven equipment in metallurgy and coking industries. The present invention includes a coke oven. The carbonization chamber and the combustion chamber in the coke oven are arranged alternately. The combustion chamber is separated into two parts communicated with each other by a vertical fire passage. Port B of the combustion chamber; the flue gas main pipe is connected to the chimney of the coke oven, and a circulation fan is installed on the flue gas main pipe; the mixing box is divided into two disconnected spaces, and each space is connected with the flue gas through a separate flue gas branch pipe. The main pipe is connected; the port A of the combustion chamber is respectively connected with the chimney, a space in the mixing box and the fuel inlet of the coke oven, and the port B of the combustion chamber is respectively connected with the chimney, another space in the mixing box and the fuel inlet of the coke oven. The invention optimizes and transforms the existing coke oven with low cost and low construction difficulty, and solves the problem that the nitrogen oxide discharge of the coke oven exceeds the standard.

Description

technical field [0001] The invention belongs to the field of coke oven equipment in the metallurgy and coking industries, and relates to a device and a method for reducing nitrogen oxides produced in a coke oven, more specifically, to a coke oven circulating flue gas double-control pipe network device and a use method thereof. Background technique [0002] Pollutants emitted from coke oven chimneys are mainly SO 2 , NO x And smoke and dust, etc., the pollutants are continuously discharged in the form of organized elevated point sources, which is one of the main pollution sources of polluting the atmosphere. When the gas burns in the vertical flue of the coke oven, it will generate nitrogen oxides NO x According to the mechanism of its generation, it can be divided into three types: temperature thermal type, hydrocarbon fuel fast type and oxygen-containing component fuel type. When the excess air coefficient α=1.1 and the air is preheated to 1100°C, the theoretical combust...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/56
CPCC10B21/10C10B21/18
Inventor 顾明言陈光李红王恒达包向军
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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