A kind of deoxidation method of converter gas

A converter gas and deoxidizer technology, which is applied in the manufacture of converters and other directions, can solve the problems of complex production process and high cost of deoxidizer, and achieve the effects of easy online regeneration, small investment and low preparation cost.

Inactive Publication Date: 2017-08-29
上海盈德宝气气体有限公司
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Problems solved by technology

The deoxidizer mainly uses copper and manganese as active components, and is produced by co-precipitation method, that is, the active components copper, manganese and carrier components such as aluminum and silicon are co-precipitated and then formed by roasting. The production process of this deoxidizer is also relatively complex and expensive

Method used

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  • A kind of deoxidation method of converter gas
  • A kind of deoxidation method of converter gas

Examples

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Effect test

Embodiment 1

[0049] In this example, the oxygen content in the raw converter gas is 6000ppm, and the dust content is 10mg / Nm 3 . Dust filter 1, 1' reduces the dust content in the converter gas to 3mg / Nm 3 , then the converter gas enters the compressor 4, the gas pressure is compressed to 6bar (G), the compressed converter gas enters the bottom of the deoxidizer 5 from the gas inlet 502 of the deoxidizer 5, and the deoxidizer is filled with copper-plated stainless steel balls, the deoxidizer The heating temperature of the electric heater 6 inside 5 is set at 250°C. After heating, the first oxygen analyzer 11 detects that the oxygen content at the gas outlet 501 of the deoxidizer 5 is 180ppm, and the oxygen removal efficiency reaches 97%, which meets the requirements of the fermentation process. The converter gas discharged from the gas outlet 501 of the deaerator 5 passes through the cooler 10, the temperature drops to room temperature, and then is sent to the downstream microbial anaerobi...

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Abstract

The invention provides a deoxidation method and device for converter gas. The deoxidation method includes the following steps that the converter gas is subjected to dust removal, and the dust content in the converter gas with dust removed is smaller than 5 mg / nm<3>; the converter gas with dust removed is conveyed into a deoxidation device which is filled with stainless steel balls with surfaces plated with copper, the temperature in the deoxidation device is controlled to be 150-300 DEG C, and the oxygen content in deoxidized converter gas is smaller than 200 ppm; the deoxidized converter gas is air-cooled to room temperature and conveyed to a downstream microbial anaerobic fermentation procedure. According to the requirements of raw converter gas in the microbial anaerobic fermentation process, a simple and efficient novel deoxidizing agent is designed, that is, the surfaces of the stainless steel balls are plated with a layer of copper. Oxygen is consumed according to the principle that copper and oxygen react to generate copper oxide, and the aim of deoxidation is achieved. The deoxidation device is easy to design, economical, reasonable and capable of removing oxygen in the converter gas at low energy consumption to meet the requirements of the fermentation process.

Description

technical field [0001] The invention relates to the technical field of gas deoxygenation, in particular to a method for deoxidizing converter gas, and more specifically to a method for removing trace amounts of oxygen in converter gas used in a microbial anaerobic fermentation process. Background technique [0002] Converter gas in steel mills must go through the electrostatic precipitator section before recycling, so considering the safety of recycling, the oxygen content in converter gas is controlled to be less than 1%. The oxygen content in the converter gas of major domestic steel mills is generally between 0.2% and 0.8%. The general purpose of converter gas is to generate electricity or make other fuels, so deoxidation treatment is basically not performed. [0003] The production of ethanol, butanol, acetic acid and other chemicals using microbial anaerobic fermentation technology using steel plant converter gas as raw material is a very popular technology in recent y...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C5/40C21C5/46
CPCC21C5/40C21C5/46
Inventor 胡建国李雪勇张琪渔
Owner 上海盈德宝气气体有限公司
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