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Quenching process and quenching device of incineration smoke of waste liquid and waste gas containing chlorine

A technology for incinerating flue gas and waste liquid, applied in the direction of incinerators, combustion methods, combustion types, etc., can solve problems such as dioxin environmental pollution, and achieve the effects of high recovery efficiency, good social benefits, and good economic benefits

Active Publication Date: 2011-08-17
BEIJING HANGHUA ENERGY SAVING ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of dioxin resynthesis and environmental pollution produced when the waste heat boiler recovers heat in the existing incineration process, thereby providing a new rapid cooling process and device for flue gas incineration of chlorine-containing waste liquid and waste gas, which not only It can ensure the full incineration treatment of chlorine-containing waste liquid and waste gas, and at the same time reduce the amount of dioxins in the flue gas, so that the flue gas produced by incineration can meet increasingly stringent environmental protection requirements

Method used

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  • Quenching process and quenching device of incineration smoke of waste liquid and waste gas containing chlorine
  • Quenching process and quenching device of incineration smoke of waste liquid and waste gas containing chlorine
  • Quenching process and quenching device of incineration smoke of waste liquid and waste gas containing chlorine

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] like figure 1 and figure 2 As shown, in the process of quenching flue gas incineration of chlorine-containing waste liquid and waste gas according to the present invention, the first step is to send the chlorine-containing waste liquid and waste gas into the incinerator, and put the oxygen in the combustion-supporting air at a high temperature of 1100-1200 ° C. A reaction occurs, and the organic matter in the waste liquid and exhaust gas is oxidized and decomposed into CO 2 、H 2 O, HCl and a very small amount of Cl 2 The second step is that the high-temperature flue gas produced by incineration directly enters the quenching tower, and is rapidly cooled to below 90°C under the action of quenching water sprayed from the quenching water ring pipe; the third step is that the cooled flue gas enters the packed tower and is mixed with alkali Liquid reverse contact reaction occurs, in which residual HCl and free Cl 2 Absorbed by lye; the fourth step, the clean flue gas is...

Embodiment 2

[0024] Experimental example

[0025] The composition of the three incineration waste liquids entering the incinerator at the same time is as follows:

experiment example

[0027] The composition of high temperature flue gas after incineration is as follows:

[0028] main product ingredients

[0029] NO X (gas)

[0030] The composition of the flue gas after being quenched by the quenching tower is as follows:

[0031] Main Product Components

[0032] The flue gas composition after being absorbed by the packed tower is as follows:

[0033] main product ingredients

[0034] o 2 (gas)

[0035] Experimental results and analysis: According to the above experimental data, the absorption rate of HCl in the high-temperature flue gas after quenching is above 99.99%, and the high-temperature flue gas absorbed by the packed tower does not contain HCl and Cl 2 . After testing, the detected content of dioxin is far less than 0.5TEQ ng / m 3 , to meet the air emission requirements.

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Abstract

The invention relates to a quenching process and a quenching device of incineration smoke of waste liquid and waste gas containing chlorine. In the process, waste liquid / waste gas containing chlorine is conveyed into an incinerator to have a reaction under the action of sufficient oxygen, wherein organic matters are oxidized and degraded into CO2, H2O, HCL, extremely micro Cl2, and the like; high-temperature smoke directly enters a quenching tower and is quickly cooled below 90 DEG C under the action of cooling water; and the smoke enters a filling tower to carry out alkaline wash and then isexhausted into atmosphere through a chimney. The device mainly comprises an incineration furnace which is connected with a waste liquid / waste gas supply system, a fuel system and a combustion air system, and the tail part of the incineration furnace is directly connected with the quenching power. The quenching tower cyclically sprays out diluted hydrochloric acid through the cooling water to coolthe smoke and adsorb the HCL in the smoke, and the quenching tower is connected with an alkali absorption system of the filling tower. The invention can effectively reduce the generation of dioxin, thereby meeting the requirements of environmental protection and energy saving.

Description

technical field [0001] The invention relates to a process and device for flue gas treatment, in particular to a process and device for treating flue gas from incineration of chlorine-containing waste liquid and waste gas. Background technique [0002] With the development of production, large-scale and rapid construction of chemical production equipment, the output of hazardous waste is increasing. With the enhancement of people's awareness of environmental protection and the strengthening of national policies and regulations, the technical requirements for the treatment of hazardous waste are also getting higher and higher. Incineration technology has become an important technology in the chemical industry with its advantages of thorough treatment, high efficiency, low investment, and less land occupation, and incineration devices have also become an important part of chemical equipment. The incineration method to treat organic waste is an effective means of using air deep...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23G7/04F23G7/06B01D53/78B01D53/14
Inventor 侯凤云安兵涛郑全军崔晓兰贺国恒王军
Owner BEIJING HANGHUA ENERGY SAVING ENVIRONMENTAL PROTECTION TECH CO LTD