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Method and system for treating foul gas

A technology of malodorous gas and treatment method, which is applied in the directions of gas treatment, separation method, chemical instrument and method, etc., can solve the problems of limited chemical oxidant oxidation-reduction potential, unsatisfactory purification effect, difficult reaction, etc., to improve the scope of application , Enhance purification efficiency, strong adaptability

Inactive Publication Date: 2016-12-21
上海环境集团股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when this method is used to deal with odorous substances that are insoluble in water, such as mercaptans and macromolecular organic amines, the purification effect on such substances is not satisfactory due to the influence of gas-liquid mass transfer efficiency.
In addition, commonly used chemical oxidants with better economical efficiency are generally sodium hypochlorite, hydrogen peroxide, etc., but limited by the oxidation-reduction potential of chemical oxidants, it is difficult for some malodorous substances to react with chemical oxidants

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Effect test

Embodiment 1

[0075] 500 tons of domestic waste incineration treatment plant is processed a day, and the amount of odorous exhaust gas in the waste storage pit is 30,000m in emergency situations 3 / h, the odor concentration is 10000, the phase transfer accelerator used is polyether, the molecular weight is 600, and the concentration of its aqueous solution is 1wt%; the oxidant is hydrogen peroxide aqueous solution, and the concentration of use is 3wt%. The oxidation tower adopts the method of entering from the bottom and exiting from the top, with a tower diameter of 4m. It is equipped with two-stage contact reaction units, which are the phase transfer treatment unit and the oxidation treatment unit (the phase transfer treatment unit is located at the bottom, the oxidation treatment unit is located at the top, and the gas to be treated enters first. phase transfer treatment unit, and then into the oxidation treatment unit), the height of each stage is 800mm, the spray unit is composed of noz...

Embodiment 2

[0079] The incineration plant handles 600 tons of domestic waste per day, and the amount of odorous exhaust gas in the waste storage pit is 35,000m in emergency situations 3 / h, the odor concentration is 12000, the phase transfer accelerator used is tetrabutylphosphonium bromide, the concentration of its aqueous solution is 5wt%; the oxidant is sodium hypochlorite aqueous solution, and the concentration of use is 1wt%. The oxidation tower adopts the method of entering from the bottom and exiting from the top, with a tower diameter of 4m. It is equipped with two-stage contact reaction units, which are the phase transfer treatment unit and the oxidation treatment unit (the phase transfer treatment unit is located at the bottom, the oxidation treatment unit is located at the top, and the gas to be treated enters first. phase transfer treatment unit, and then into the oxidation treatment unit), the height of each stage is 600mm, the spray unit is composed of nozzles and nozzles, the ...

Embodiment 3

[0083] The incineration plant handles 800 tons of domestic waste per day, and the amount of odorous exhaust gas in the waste storage pit is 25,000m in emergency situations 3 / h, the odor concentration is 11000, the phase transfer accelerator used is polyether, the molecular weight is 400, and the concentration of its aqueous solution is 0.2wt%; the oxidant is hydrogen peroxide aqueous solution, and the concentration of use is 10wt%. The oxidation tower adopts the method of entering from the bottom and exiting from the top, with a tower diameter of 4m. It is equipped with two-stage contact reaction units, which are the phase transfer treatment unit and the oxidation treatment unit (the phase transfer treatment unit is located at the bottom, the oxidation treatment unit is located at the top, and the gas to be treated enters first. phase transfer treatment unit, and then into the oxidation treatment unit), the height of each stage is 1000mm, the spray unit is composed of nozzles ...

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Abstract

The invention relates to the technical field of environmental protection, in particular to a method and system for treating foul gas. The method for treating the foul gas includes the following steps that 1, the gas to be treated is subjected to phase transfer treatment and oxidation treatment; 2, the gas obtained after phase transfer treatment and oxidation treatment is subjected to liquid removal treatment. Compared with the prior art, the method and system for treating the foul gas are high in adaptability, resistant to impact loads, suitable for water-soluble foul substances and also applicable to purification of pollutants with poor water solubility. Besides, according to the method, co-solvent absorption and porous adsorption are integrated, the mass transfer process that pollutants in the gas are transferred into a liquid phase is intensified, and the gas pollutant purification efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a malodorous gas treatment method and system. Background technique [0002] At present, with the continuous acceleration of urbanization in our country, urban waste disposal has become a very serious problem. Among the three methods of garbage disposal (sanitary landfill, incineration and composting), incineration treatment has a significant reduction effect, which can reduce the weight of the treated garbage by 80% and reduce the volume by more than 90%, especially in economically developed countries. , In cities with high calorific value of domestic waste and tight land resources, the incineration treatment method has the most promising prospects. In addition, the waste incineration method can also recover waste heat for power generation, so as to achieve the purpose of resource utilization. Therefore, the incineration treatment method has increasingly become...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/52B01D53/72B01D53/58
CPCB01D53/78B01D53/02B01D53/52B01D53/58B01D53/72B01D2251/106B01D2251/304B01D2251/306B01D2253/108B01D2257/306
Inventor 李传运金玉婷李晓东秦峰陈善平张瑞娜侯胜国
Owner 上海环境集团股份有限公司
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