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Method for treating dioxine and pollutants in tail gas in waste incineration

A technology of waste incineration and treatment method, applied in the direction of combustion method, incinerator, combustion type, etc., can solve the problems of difficult and high cost of exhaust dioxin control

Inactive Publication Date: 2011-01-19
苏国强
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The purpose of the present invention is to provide a treatment of dioxins and pollutants in waste incineration tail gas with simple process, thorough treatment, easy control and optimization, aiming at the existing problems such as difficulty in treating dioxins in waste incineration tail gas and high cost method

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  • Method for treating dioxine and pollutants in tail gas in waste incineration
  • Method for treating dioxine and pollutants in tail gas in waste incineration
  • Method for treating dioxine and pollutants in tail gas in waste incineration

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Embodiment Construction

[0037] The following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.

[0038] see Figure 1~4 , an urban solid waste treatment plant, the exhaust gas flow at the tail of the incinerator is within 780 ~ 7600m 3 / h, tail gas temperature 500~750℃, inlet gas dioxin concentration 7.3ng-TEQ / Nm 3 After the combined packing device, the flue gas after biological treatment in the turbulent ball tower is discharged into the atmosphere through the induced draft fan. The combined packing device is equipped with a Laxi ring packing tower, a plate swirl tower, a perforated ball tower and a turbulent ball tower.

[0039] One of the important factors of its purification efficiency is the selection of the tower type, because it is required that the gas-liquid two-phase can be in good contact in the purification equipment. Among the currently used gas-liquid mass transfer equipment, two types are preferred, namely packed tower and plate...

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Abstract

The invention discloses a method for treating dioxine and pollutants in tail gas in waste incineration, relates to a method for treating the tail gas in the waste incineration, and provides a method for treating the dioxine and the pollutants in the tail gas in the waste incineration with simple process, thorough treatment and easy control and optimization. The method for treating the dioxine and the pollutants in the tail gas in the waste incineration comprises the following steps of: introducing the tail gas in the waste incineration into a Raschig ring packed tower for alkali liquid absorption in the Raschig ring packed tower; introducing the smoke subjected to the alkali liquid absorption of the Raschig ring packed tower into a plate hydrocyclone tower for oxidization in the plate hydrocyclone tower; entering the soot of the smoke subjected to the alkali liquid absorption into an activated carbon collection tank, and recycling the alkali liquid after the alkali liquid is cooled; introducing the smoke subjected to the oxidization of the plate hydrocyclone tower into a ball-through sieve tray tower for reduction in the ball-through sieve tray tower; introducing the smoke subjected to the reduction of the ball-through sieve tray tower into a turbulent ball tower for biological treatment; and discharging the smoke subjected to the biological treatment of the turbulent ball tower into the atmosphere through an induced draft fan.

Description

[0001] technology field. [0002] The invention relates to a treatment method for waste incineration tail gas, in particular to a treatment method for dioxin and pollutants in waste incineration tail gas. Background technique [0003] In May 2001, under the auspices of the United Nations Environment Programme, representatives from 127 countries and regions, including China, formally signed and adopted the Stockholm Convention on Persistent Organic Pollutants (POPs Convention) in Stockholm, Sweden. The main content of the convention is to curb and eliminate the pollution of 12 POPs in our surrounding environment, including dioxins, and another 7 POPs are related to dioxins. The environmental problems caused by dioxins have become the focus of human attention. . [0004] Today, when vigorously advocating "circular economy" and the coordinated development of economy, society and environment, municipal solid waste incineration power generation and solid hazardous waste incinerati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23J15/00F23J15/04F23G5/44
Inventor 苏国强苏艺斌
Owner 苏国强
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