Technology for simultaneously removing dust, sulfur and niter without adding purifying agent during gas discharge of coal burning boiler

A technology for coal-fired boilers and purifiers is applied in the field of exhaust gas purification of coal-fired boilers, which can solve the problems of large capital investment, difficult control, and long process.

Inactive Publication Date: 2009-09-23
谢载衡
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Problems solved by technology

[0002] Existing coal-fired boiler exhaust gas purification technology, in addition to dust removal, additional purification agents and corresponding auxiliary equipment are r

Method used

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  • Technology for simultaneously removing dust, sulfur and niter without adding purifying agent during gas discharge of coal burning boiler

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Embodiment Construction

[0006] The specific implementation is shown in the accompanying drawings, which are divided into a flue gas system and a circulating washing water system. The flue gas system is: the flue gas from the boiler first enters the pretreatment vessel 1, where it is directly mixed with the circulating washing water pumped from the circulating washing water for pre-cooling and pre-dust removal, and then the gas-water separation vessel 2 is carried out, and the flue gas After removing the water, the gas enters the flue gas purification tower 3. Here, it fully contacts with the acidic washing water sent by the circulating washing water pump to carry out a series of chemical reactions, and at the same time completes the purification of various pollutants in the flue gas. The system is: the dust-containing circulating washing water flowing out from the pretreatment vessel passes through the gas-water separation vessel 2 and flows into the circulating washing water clarification tank 6 tog...

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Abstract

The invention belongs to the field of purifying the fuel gas of the coal burning boiler, and is a technology for simultaneously removing dust, sulfur and niter without adding a purifying agent during gas discharge of the coal burning boiler. The method is characterized in that: firstly, analysis of all components of the fuel coal, the burning mechanism of the coal in the boiler and the generation and physical-chemical properties of three types of pollutants shows that when the coal burns, not only the pollutants are generated, but also a key material of ferric oxide of the purification method is also generated, so the purification of the dust, sulfur and niter by the mutual reaction is realized, and at the same time, the comprehensive utilization of fuel resources is realized. The purification of the dust, sulfur and niter is achieved in the united equipment and no impurity is generated, so the technology has the characteristics of short process flow, reliable operation and convenient maintenance.

Description

technical field [0001] The invention is applicable to the field of exhaust gas purification of coal-fired boilers. Utilizing the physical and chemical properties of dust, sulfur dioxide and nitrogen oxides in the boiler exhaust, the three interact with each other to produce a purification device for self-purification purposes, and it is especially suitable for large boilers. Background technique [0002] Existing coal-fired boiler exhaust gas purification technology, in addition to dust removal, additional purification agents and corresponding auxiliary equipment are required for sulfur dioxide and nitrogen oxides, which requires large basic investment, high operating costs, long process, and difficult control. Secondary pollution of waste. Contents of the invention [0003] The present invention is a technology for simultaneous dust removal, desulfurization and denitrification of exhaust gas from coal-fired boilers without additional purification agent. [0004] The inv...

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Application Information

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IPC IPC(8): F23J15/04F23J15/06
Inventor 谢载衡
Owner 谢载衡
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