Method and device using high temperature air and high temperature steam as gasification agents for coal gas production

A technology of high-temperature steam and high-temperature air, which is applied in the manufacture of combustible gas and the petroleum industry. It can solve the problems of high gas outlet temperature, unfavorable terminal gas use, and large sensible heat loss, and achieve more combustion and gasification reaction and combustion gasification. The reaction is complete and thorough, and the effect of increasing the calorific value of gas

Active Publication Date: 2014-01-15
上海穗杉实业股份有限公司
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Problems solved by technology

[0014] In order to balance the exothermic and endothermic processes and achieve the purpose of continuous gas production, it is more effective to use oxygen-enriched air (hereinafter referred to as oxygen-enriched) as the gasification agent. This production process requires less air pollution because it does not need to be vented. Because

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  • Method and device using high temperature air and high temperature steam as gasification agents for coal gas production
  • Method and device using high temperature air and high temperature steam as gasification agents for coal gas production

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Embodiment Construction

[0049] The difference between the present invention and the prior art will be described below in conjunction with the accompanying drawings; and the present invention will be further described.

[0050] figure 1 It is a coal gas generation process and device that uses high-temperature air and high-temperature steam as gasification agents, and is mainly composed of the following process equipment:

[0051] Coal bunker 01, gas generator 02, blower 03, mixer 04, jacketed drum 05, dust collector 06, electric coke collector 07, air cooler 08, washing cooler 09, heat exchanger 10.

[0052] figure 2 It is a traditional coal gas generation process and device that uses air and steam as gasification agents. For comparison, it is mainly composed of the following process equipment:

[0053] Coal bunker 01, gas generator 02, blower 03, mixer 04, jacketed steam drum 05, dust collector 06, electric coke collector 07, air cooler 08, washing cooler 09.

[0054] attached figure 1 The blowe...

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Abstract

The invention belongs to the technical field of chemical coal gases, in particular to a method and a device using high temperature air and high temperature steam as gasification agents for coal gas production. According to the invention, coal gases are produced by using the air with a temperature of 120 to 220 DEG C and oxygen content of 20.93 percent (v/v) and the high temperature steam with a temperature of 120 to 220 DEG C as the gasification agents. Correspondingly, a heat exchanger, a control valve and a pipeline are additionally arranged in an original coal gas production device. According to the invention, the technical defects of gas production of a conventional normal-pressure fixed bed gas producer are well overcome; yield of a gas furnace and the calorific value of the coal gases are improved; carbon content in ash is reduced; sensible heat loss is reduced; standard coal consumption under the unit calorific value is reduced to 5 to 15 percent.

Description

technical field [0001] The invention belongs to the technical field of chemical coal gas production, and in particular relates to a coal gas production method and device. Background technique [0002] Atmospheric fixed bed gasifiers (also known as mixed gasifiers) usually use a mixture of air and water vapor as a gasification agent to produce gas. The working process is usually to add fuel from the top of the gasifier, and then from the bottom of the furnace. Introduce air or oxygen-enriched fuel to burn with solid fuel, store heat in the fuel layer, and then pass steam into the fuel layer to react with carbon to form water gas. The process of producing gas is mainly in the gasification layer. Generally, the main gasification layer Chemical reactions include the following oxidation and reduction reactions: [0003] C + O2 = CO2 + Q (1) [0004] 2C + O2 = 2CO + Q (2) [0005] C + H2O(steam) = CO + H2 – Q (3) [0006] C + 2H2O(steam) = CO2 + 2H2 - Q (4) [0007] C + CO2 =...

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Application Information

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IPC IPC(8): C10J3/20C10J3/84C10J3/72
Inventor 陈宗蓬张国友王晨程贤茂贾吉来俞晓峰谢东红
Owner 上海穗杉实业股份有限公司
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