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A dust-free and environmentally friendly coal-fired power generation method

An environmentally friendly, coal-burning technology, applied in fuel supply, combustion equipment, machines/engines, etc., to reduce operating time, save energy, and solve the problem of insufficient coal-burning efficiency

Active Publication Date: 2018-08-14
恒盛能源股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to improve the thermal efficiency of coal combustion, prevent the deposition and corrosion of flue gas ash powder, and reduce environmental pollution, the present invention provides a dust-free and environmentally friendly coal-fired power generation method

Method used

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  • A dust-free and environmentally friendly coal-fired power generation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The flue gas temperature in the preheating cylinder and at the bottom of the conveyor is 170°C, and the raw coal is dried to 20wt% for the first time and 14wt% for the second time, so as to complete the drying and dehydration of the raw coal, and the fine coal flowing out from the separator The powder reacts with high-temperature steam at 220°C, containing hydrocarbon synthesis catalysts and hydrogen cracking catalysts and oxygen in the synthesis gas reaction chamber to form combustible synthesis gas, wherein the hydrocarbon synthesis catalysts include iron-copper catalysts, and the hydrocarbon synthesis catalysts contain 68% The total iron metal, the balance is copper metal and unnecessary impurities, the volume ratio of hydrocarbon synthesis catalyst to hydrogenation catalyst is 7.5, combustible synthesis gas can include H2, CO and NH3, and the ratio of H2, CO and NH3 is 1.5 :2:1, the H2S gas in the third component is passed into a desulfurization reactor containing a ...

Embodiment 2

[0054] The flue gas temperature in the preheating cylinder and at the bottom of the conveyor is 190°C, and the raw coal is dried to 19wt% for the first time and 13wt% for the second time, so as to complete the drying and dehydration of the raw coal, and the fine coal flowing out from the separator The powder reacts with high-temperature steam at 250°C, containing hydrocarbon synthesis catalyst and hydrogen cracking catalyst and oxygen in the synthesis gas reaction chamber to form combustible synthesis gas, wherein the hydrocarbon synthesis catalyst includes iron-copper catalyst, and the hydrocarbon synthesis catalyst contains 70% The total iron metal, the balance is copper metal and unnecessary impurities, the volume ratio of hydrocarbon synthesis catalyst to hydrogenation catalyst is 6, combustible synthesis gas can include H2, CO and NH3, and the ratio of H2, CO and NH3 is 5 :2:1, the H2S gas in the third component is passed into a desulfurization reactor containing a catalys...

Embodiment 3

[0056] The flue gas temperature in the preheating cylinder and at the bottom of the conveyor is 210°C, and the raw coal is dried to 17wt% for the first time and 11wt% for the second time, so as to complete the drying and dehydration of the raw coal, and the fine coal flowing out from the separator The powder reacts with 320°C high-temperature steam in the synthesis gas reaction chamber, contains hydrocarbon synthesis catalysts, hydrogen cracking catalysts and oxygen to form combustible synthesis gas, wherein the hydrocarbon synthesis catalysts include iron-copper catalysts, and the hydrocarbon synthesis catalysts contain 72% The total iron metal, the balance is copper metal and unnecessary impurities, the volume ratio of hydrocarbon synthesis catalyst to hydrogenation catalyst is 4.5, combustible synthesis gas can include H2, CO and NH3, and the ratio of H2, CO and NH3 is 18 :2:1, the H2S gas in the third component is passed into a desulfurization reactor containing a catalyst ...

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Abstract

The invention relates to a dust-free environment-friendly coal firing power generation method. The method comprises the steps that 1, feed coal is conveyed, wherein the feed coal is preheated and enters a conveyor for feeding; 2, the conveyor conveys the feed coal into a coal grinding device to be smashed, and meanwhile hot wind is introduced to dry smashed coal dust; 3, the coal dust which passesthrough the coal grinding device is driven to enter a separator by the hot wind to be graded, qualified coal dust is grinded along air flow, and unqualified rough coal dust is grinded with the feed coal again under the effect of separator blades; 4, fine coal dust reacts with high-temperature steam and oxygen with the temperature above 200 DEG C to generate combustible synthesis gas; 5, the combustible synthesis gas is compressed by a gas compressor and sprayed into a boiler by an ejector for combustion; 6, high-temperature and high-pressure water vapor is used for driving a steam electric generating set to work and accordingly driving an electric generator to generate electricity. According to the dust-free environment-friendly coal firing power generation method, the fine coal dust is subjected to reaction and generates the synthesis gas, the coal firing efficiency is improved, the following flue gas and dust are reduced, burning is sufficient through spraying, through desulfurization and denitration reaction, toxic gas in mixed gas and flue gas is removed, the flue gas and water vapor are recycled, and the economic benefit is improved.

Description

technical field [0001] The invention relates to the field of power generation, in particular to a dust-free and environmentally friendly coal-fired power generation method. Background technique [0002] Coal has always been in the core dominant position in my country's energy supply, and for a long time to come, the coal-based energy structure will continue in my country. In the prior art, coal is used to generate electricity, and coal is usually burned through a gas turbine to generate electricity, while larger coal blocks contain a high amount of ash and sulfur due to incomplete combustion, and the ash and sulfur are entrained in the flue gas and passed through the turbine. Deposits on channels and vane surfaces and corrodes equipment. Deposited dust blocks passages in the turbine and impairs thermal efficiency as fine particles deposit on heat transfer surfaces. At the same time, in the prior art, there is also a steam engine power generation technology. Steam engine po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/46F23K5/00F01K11/02
Inventor 余国旭余杜康毛宵峰兰国强徐斌徐春
Owner 恒盛能源股份有限公司
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