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Method for purifying waste gases during medical waste incineration

A technology for medical waste and incineration flue gas, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve the problems of poor dust removal effect, fragmentation, filter bag blockage, etc., to improve gas distribution effect and efficient removal. , the effect of improving the purification effect

Inactive Publication Date: 2015-05-27
HANGZHOU INST OF ADVANCED MATERIAL BEIJING UNIV OF CHEM TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

The treatment technologies for acid gas mainly include dry process, semi-dry process, wet process and circulating fluidized bed process; the removal of heavy metals and dust mainly adopts activated carbon adsorption, bag filter, electrostatic precipitator and other means, but the above The removal effect of the method on fine particle size dust is poor, and the bag filter has problems such as clogged and broken filter bags. The above-mentioned methods are insufficient for the comprehensive removal of pollutants in the exhaust gas. , especially the problem of acid gas and a large amount of fly ash disposal, it is necessary to adopt a new flue gas treatment process that can meet the needs of more advanced, more scientific and efficient

Method used

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  • Method for purifying waste gases during medical waste incineration
  • Method for purifying waste gases during medical waste incineration
  • Method for purifying waste gases during medical waste incineration

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Embodiment

[0034] Such as figure 1 , figure 2 As shown, the temperature of medical waste incineration flue gas is about 400°C-600°C, and the flue gas contains HCl, SOx, solid particles, heavy metals, etc. The flue gas first enters the absorption tower 1, and after the gas inlet 2 of the absorption tower enters the absorption tower 1, it becomes four branch inlets 6. The branch inlets 6 are evenly distributed in the absorption tower along the oblique line from top to bottom, and the uppermost branch inlet is far from the gas Inlet 2 is the closest, and the lowermost branch inlet is farthest from gas inlet 2. The 4 branch inlets can basically realize the uniform distribution of gas. A corresponding sprayer 5 is provided on the upper part of each branch entrance, and the sprayer 5 is 1m away from the branch entrance. Since the gas inlet is divided into several branch inlets, the reaction efficiency can be improved by setting corresponding sprayers at each branch inlet, and the distribut...

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Abstract

The invention relates to a method for purifying waste gases during medical waste incineration and aims at providing an effective process. According to the method, the acidic materials, solid particles and heavy metals contained in the medical waste incineration flue gas are removed, and clean emission of the flue gas is realized. The method specifically comprises a wet absorption step and a dry dedusting step, wherein the wet absorption step is a procedure of absorbing the acidic materials in the flue gas by adopting an absorbing tower; and the dry dedusting step is a procedure of removing the solid particles and heavy metals by adopting a dust remover.

Description

technical field [0001] The invention relates to a method for purifying organic pollutants and solid particles in the incineration process of various solid wastes, in particular to a method for purifying waste gas from incineration of medical waste. Background technique [0002] Medical waste refers to directly or indirectly infectious, toxic and other hazardous waste produced by medical and health institutions in the course of medical treatment, prevention, health care and other related activities. In order to prevent medical waste from causing social harm, spreading diseases, protecting the environment and safeguarding human health, medical waste needs to be properly disposed of. Among the existing disposal methods, incineration is a widely used method. For example, the rotary kiln incineration device, the rotary kiln is a cylindrical cylinder, lined with refractory material, installed slightly inclined, the feed end is higher than the discharge section, and the motor drive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/80B01D53/40B01D46/00B01D46/30
Inventor 吴浩
Owner HANGZHOU INST OF ADVANCED MATERIAL BEIJING UNIV OF CHEM TECH
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