Method and device for inhibiting generation of dioxin from incineration flue gas

A technology for incinerating flue gas and dioxins, applied in the field of reducing or inhibiting the generation of harmful substances in the incineration of various wastes, air pollutant emission reduction control, and inhibiting the generation of dioxins in incineration flue gas, which can solve the complex process, Difficult industrial application, high operating costs, etc., to achieve the effect of simple operation, short process and good application effect

Active Publication Date: 2014-03-26
中国中化股份有限公司 +2
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for effectively suppressing the generation of dioxins in the incineration flue gas, so as to solve the existing problems in the existing incineration flue gas dioxin treatment methods such as complex process, high operating cost or difficulty in industrial application

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  • Method and device for inhibiting generation of dioxin from incineration flue gas
  • Method and device for inhibiting generation of dioxin from incineration flue gas

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Embodiment Construction

[0027] The present invention will be further described in conjunction with the accompanying drawings in order to better understand the present invention. However, the present invention is by no means limited thereto. Within the scope of the claims, the process of realizing quenching of high-temperature flue gas by changing the type, structure and operating conditions of the spray fluidized quenching tower belongs to the scope of the present invention, and can effectively control the exhaust gas. content of dioxins.

[0028] Take a domestic pesticide company as an example. The enterprise uses a rotary kiln incinerator to treat waste liquid and solid waste generated during production, which contains chemical substances including organic chlorides and inorganic chlorides. The daily processing capacity of the device is 72 tons of solid waste residue, which contains 15 tons of combustible organic matter. %, the calorific value of 12 tons of waste liquid is 21000Kj / kg. The flue ga...

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Abstract

The invention discloses a method and a device for inhibiting generation of dioxin from incineration flue gas. The method comprises the steps of controlled cooling and quenching process. Flue gas with the temperature higher than 1100 DEG C from an incinerator is cooled to 600 DEG C by a way of waste heat recovery, through the power of an induced draft fan and the function of a distribution plate, an inert carrier in a spray-fluidization quenching tower is in a fluidization state, meanwhile cooling water is continuously sprayed into the tower; by utilizing the characteristic of high heat transfer efficiency of a fluidized bed, the incineration flue gas is instantly cooled to below 200 DEG C from 600 DEG C in less than 0.1s to inhibit the resynthesis of the dioxin. The method and the device provided by the invention have the characteristics of controllable quenching time and temperature, good quenching effect, non-generation of waste solids and waste water, and the like, are applicable to the purification of the incineration flue gas of various wastes, and realize the emission reduction of the dioxin.

Description

technical field [0001] The invention belongs to the air pollutant emission reduction control technology in the field of environmental protection, and relates to a method for reducing or inhibiting the generation of harmful substances when burning various wastes and a device for implementing the method, and in particular to a method for inhibiting the generation of dioxins in the incineration flue gas method and device. technical background [0002] Dioxins (currently still commonly referred to as "dioxins" in the chemical and chemical industry) compounds are polychlorinated dibenzodioxins (Polychlorinated dibenzopdioxins PCDDs) and polychlorinated dibenzofurans (Polychlorinated dibenzofuran, The general name of PCDFs) (abbreviated as PCDD / F), is one of the most toxic compounds known at present, and has irreversible carcinogenic, teratogenic and mutagenic "three toxicities". Dioxin is very stable, it starts to decompose above 700°C, and it needs to be above 1100°C for high-t...

Claims

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Application Information

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IPC IPC(8): B01D53/18B01D53/78B01D53/70B01D50/00F23J15/00
Inventor 龙飞张军王洪发冯越韩永博马宝刚陈强
Owner 中国中化股份有限公司
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