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System and method for generating electricity by using secondary recycling of steel-making converter gas

A secondary recovery and gas technology, applied in the direction of manufacturing converters, improving process efficiency, improving energy efficiency, etc., can solve the problems of energy waste, high concentration requirements, insufficient recovery of converter gas, etc., and achieve an increase in recovery volume. , to ensure the effect of stable and reliable operation

Active Publication Date: 2011-05-11
SHOUGANG CORPORATION +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

The existing converter gas recovery and utilization system has the following main problems: ① The requirements for the CO and O2 concentration of the gas are high, resulting in insufficient recovery of the converter gas
②When the gas cabinet is too high to continue to recover the converter gas, all the converter gas must be released, resulting in a serious waste of energy
③ Due to the intermittent problem of converter gas recovery, even if the diffused converter gas is recovered, the existing system cannot use this part of energy stably and continuously

Method used

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  • System and method for generating electricity by using secondary recycling of steel-making converter gas

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Embodiment Construction

[0017] figure 1 It is a specific embodiment of the present invention.

[0018] The power generation system of the present invention mainly includes a check valve 4, a gas regulating valve 3, a burner 5, a waste heat boiler 6, a heat accumulator 9, a steam regulating valve 10, a steam turbine 11, a generating set 12, a condenser 13, a circulating water pump 14, Deaerator 15 etc. Install three-way valve 2 and calorific value analyzer 1 in front of the chimney. Three-way valve 2 is installed at the connection between the exhaust pipe in front of the chimney and the gas secondary recovery pipe. Calorific value analyzer 1 is installed near the three-way valve 2. At 0.5-1.5 meters in front of the incoming side of the pipeline, the action of the three-way valve 2 is controlled by the calorific value of the gas detected by the calorific value analyzer 1. When the calorific value meets the requirements for the secondary recovery of gas, the three-way valve 2 The recovery side is open...

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Abstract

The invention discloses a method for generating electricity by using secondary recycling of steel-making converter gas, belonging to the technical field of utilization of steel-making converter gas. A power generation system mainly comprises an inverter valve, a gas adjusting valve, a burner, an exhaust-heat boiler, a heat storage, a steam adjusting valve, a steam turbine, a power generation unit, a condenser, a circulation water pump and a deaerator, wherein a three-way valve and a heat value analyzer are arranged in front of a radiation chimney; the three-way valve is arranged at a connection part of a radiation pipeline in front of the chimney and a gas secondary recycling pipeline; and the heat value analyzer is arranged at a part where the three-way valve is 0.5-1.5 meters close to the front of a flow-incoming side of the radiation pipeline. The invention has the advantage that the recycling quantity of the converter gas is improved on the premise of ensuring that the converter gas is effectively utilized.

Description

technical field [0001] The invention belongs to the technical field of steelmaking converter gas utilization, and in particular relates to a method for secondary recovery and utilization of steelmaking converter gas to generate electricity. Background technique [0002] Recycling and utilization of steelmaking converter gas is currently the focus of domestic iron and steel enterprises' energy-saving work. Converter gas has a high calorific value, which is an important part of gas resources in iron and steel enterprises, and an important link to realize negative energy steelmaking in converters. The effective recovery and utilization of converter gas can not only save energy and increase efficiency, but also have environmental benefits. [0003] At present, the recovery and utilization of converter gas at home and abroad is mainly to use OG or LT system combined with converter gas cabinet to recover converter gas, and the recovered converter gas is used by users according to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/40
CPCY02P10/25
Inventor 杨小龙汪洪涛岳勇张效鹏杨天助马泽军
Owner SHOUGANG CORPORATION
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