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Waste-heat deep recovery and white smoke elimination system and method for flue gas

A flue gas waste heat and flue gas technology, applied in heating systems, hot water central heating systems, heating methods, etc., can solve the problem of reducing the water vapor content in flue gas, unfavorable flue gas recovery and harmless treatment, and large energy consumption and other problems, to achieve the effect of reducing water content, facilitating absorption and harmless treatment

Pending Publication Date: 2020-03-13
北京市热力集团有限责任公司
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Problems solved by technology

[0002] Existing boiler equipment will produce a large amount of flue gas when it realizes thermal energy supply and urban heat pipe network medium output. The flue gas accumulates water vapor and is mixed with white mist, which affects the environment and is not conducive to the recovery and harmless treatment of flue gas.
[0003] The existing white mist elimination methods usually need to increase the consumption of additional heat energy. The additional heat energy is used to increase the temperature of the flue gas, and the condensed water droplets are heated and vaporized to eliminate the white mist.
However, this method consumes a lot of energy and does not reduce the water vapor content in the flue gas, which is not conducive to the subsequent flue gas treatment process

Method used

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  • Waste-heat deep recovery and white smoke elimination system and method for flue gas
  • Waste-heat deep recovery and white smoke elimination system and method for flue gas

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Embodiment Construction

[0023] In order to make the purpose and technical solutions of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries shoul...

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Abstract

The invention provides a waste-heat deep recovery and white smoke elimination system and method for flue gas. The method comprises the following steps: firstly reducing the temperature of the flue gasfrom close to 90 DEG C to 30 DEG C or less through a heat exchange device, and raising the temperature of the flue gas to 50 DEG C or more through a small amount of heat medium provided by a heat supply main pipe to eliminate white smoke in the flue gas. On the basis, a gas-liquid separation device can be additionally arranged in the above process to separate and collect fine water droplets liquefied in the flue gas, so that the water content in the flue gas can be reduced, and the subsequent direct absorption and harmless treatment of the flue gas by flue gas processing equipment can be facilitated.

Description

technical field [0001] The invention relates to the technical field of flue gas treatment, in particular to a system and method for deep recovery of waste heat from flue gas and elimination of white mist. Background technique [0002] Existing boiler equipment will produce a large amount of flue gas when it realizes thermal energy supply and urban heat pipe network medium output. The flue gas accumulates water vapor and is mixed with white mist, which affects the environment and is not conducive to the recovery and harmless treatment of flue gas. . [0003] The existing methods for eliminating white mist usually require additional heat energy consumption to increase the temperature of the flue gas and heat and vaporize the condensed water droplets in order to eliminate the white mist. However, this method consumes a lot of energy and does not reduce the water vapor content in the flue gas, which is not conducive to the subsequent flue gas treatment process. Contents of th...

Claims

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Application Information

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IPC IPC(8): F23J15/06F23J15/08F24D3/18F28B9/08F28D5/02F28F17/00F28F27/00
CPCF23J15/06F23J15/08F24D3/18F24D2200/18F28B9/08F28D5/02F28F17/00F28F27/00Y02E20/30
Inventor 张立申王海鸿孙鹏李仲博荀志国汉京晓陈飞
Owner 北京市热力集团有限责任公司
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