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Application of coke oven exhaust gas in coke preheating process

A coke oven and waste gas technology, which is applied in the improvement of process efficiency, coke oven, waste heat treatment, etc., can solve the problems of low water content, high temperature of hot blast furnace waste gas, and rising coke moisture, so as to save costs and improve the utilization rate of heat energy. , the effect of reducing production costs

Inactive Publication Date: 2007-10-17
BAOSTEEL GROUP XINJIANG BAYI IRON & STEEL
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

This is because firstly, the temperature of the exhaust gas from the hot blast stove is high and contains less moisture. Secondly, many manufacturers believe that the exhaust gas of the coke oven is the product of the combustion of organic matter and contains more moisture. No need for coke oven exhaust gas

Method used

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  • Application of coke oven exhaust gas in coke preheating process

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Embodiment Construction

[0014] An application of coke oven waste gas in the preheating coke process, as shown in the attached figure, the bottom of the coke oven chimney 1 and the bottom of the coke bin 6 are connected to each other through the air supply pipe 5, and an induced draft fan 3 is installed on the air supply pipe 5 , the coke oven exhaust gas in the coke oven chimney 1 is sent into the coke bin 6 through the air supply pipe 5 to preheat the coke. A disc valve 4 is installed on the air supply pipe 5 between the coke bin 6 and the induced draft fan 3 to adjust the intake amount of waste gas. A gate valve 2 is installed on the gas supply pipe 5 between the induced draft fan 3 and the coke oven chimney 1, and is used to cut off the communication passage between the induced draft fan 3 and the coke oven chimney 1 when a failure occurs. The lower part of the coke bin 6 is in the shape of an upside-down quadrangular prism, and the waste gas enters from the bottom of the coke bin 6, so that the w...

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Abstract

The invention relates to a new purpose of produced coke oven product gas in the iron works, especially the application of coke oven product gas in the preheating coke art. The application includes: communicating the coke oven chimney bottom and coke barn bottom by feeding pipe, installing induced draft fan on the feeding pipe, feeding the coke oven product gas in the coke oven chimney to coke barn by feeding pipe to preheat. The invention not only makes the coke oven product gas preheat the coke for increasing the heat energy utilization factor of the coke oven product gas, but also not raise the coke moisture so as to effectively reduce the cost.

Description

technical field [0001] The invention relates to a new application of coke oven waste gas produced in ironworks production, especially the application of coke oven waste gas in preheating coke process. Background technique [0002] At present, my country's ironworks have been coking and cooling red coke for a long time, and have always adopted the method of water quenching and cooling coke platform to fetch water. Due to the difficulty of controlling the degree of water pumping, the moisture content of the coke has changed greatly, and the moisture content of the coke has increased from the normal 4% to 7%-8%, resulting in a drop of about 30°C in the top temperature of the blast furnace, and the condensation of gas in the bag dust collector of the blast furnace , the pressure difference rises, and the bag filter cannot operate normally. Due to the high moisture content of the coke entering the furnace, the screening effect under the tank is poor, and the coke powder entering...

Claims

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Application Information

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IPC IPC(8): C21B7/00C10B15/00C10B57/00F27D17/00
CPCY02P10/25
Inventor 袁万能廖文新向旭东
Owner BAOSTEEL GROUP XINJIANG BAYI IRON & STEEL
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