Quenching waste heat boiler

A technology of waste heat boiler and quenching heat exchanger, which is applied in the field of quenching waste heat boiler, can solve the problems of a large amount of carbon powder and high cost, and achieve the effect of easy cleaning and inhibition of synthesis

Pending Publication Date: 2018-05-08
CISDI ENG CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The activated carbon adsorption method requires a large amount of carbon powder, which is expensive

Method used

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  • Quenching waste heat boiler
  • Quenching waste heat boiler
  • Quenching waste heat boiler

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Embodiment Construction

[0018] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0019] see figure 1 , the component labels in the accompanying drawings are respectively: 1-combustion settling chamber; 2-Laval nozzle; 3-quick cooling heat...

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Abstract

The invention discloses a quenching waste heat boiler and belongs to the field of environmental protection. The quenching waste heat boiler comprises a flue gas inlet pipe, a combustion settling chamber, a quenching heat exchanger and a flue gas outlet pipe which are sequentially connected in the flowing direction of flue gas. The quenching heat exchanger vertically communicates with the top of the combustion settling chamber. The flue gas inlet pipe and the quenching heat exchanger are arranged at the same side relative to the combustion settling chamber. The bottom, communicating with the combustion settling chamber, of the quenching heat exchanger is provided with at least one Laval jet tube. By adoption of the quenching waste heat boiler, the high-temperature flue gas of 800 DEG C canbe quickly cooled to 200 DEG C or below within 2 seconds, dioxin synthesis is restrained and meanwhile flue gas waste heat can be recovered.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a rapid cooling waste heat boiler. Background technique [0002] In electric furnace smelting, especially in the process of electric furnace smelting with scrap steel preheating, as well as in waste incineration, a large amount of high-temperature flue gas will be produced. After the scrap steel and garbage are subjected to high temperature, the flue gas will contain a large amount of dioxin precursors. Quenching is an effective way to prevent the synthesis of dioxins in flue gas emissions. At present, most electric furnace flue gas is quenched by water spray cooling. Water spray cooling not only consumes a lot of water, but also makes the effective waste heat of the flue gas not recovered. Another way is to use activated carbon adsorption to absorb the dioxins in the gaseous state in the activated carbon, and then collect the activated carbon throug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23J15/02F23J15/06F23J3/02
CPCF23J3/026F23J15/022F23J15/06F23J2217/60Y02E20/30
Inventor 董茂林谢建周涛
Owner CISDI ENG CO LTD
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