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Method for preparing porous material from mixed sludge to treat hydrogen sulfide polluted gas

A technology of porous materials and mixed sludge, applied in chemical instruments and methods, separation methods, catalysts for physical/chemical processes, etc., can solve the problems of lack of resource utilization means, high content of heavy metals, large volume, etc., to achieve convenient recovery, Achieve the effect of emission compliance and efficient treatment

Active Publication Date: 2019-07-23
SHANGHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Whether it is electroplating sludge or domestic sludge, due to its large quantity, large volume, and high heavy metal content, it has become a difficult point to deal with, and there is a lack of reasonable means of resource utilization.

Method used

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  • Method for preparing porous material from mixed sludge to treat hydrogen sulfide polluted gas
  • Method for preparing porous material from mixed sludge to treat hydrogen sulfide polluted gas

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Embodiment Construction

[0020] Below in conjunction with specific embodiment the present invention will be described in further detail

[0021] This embodiment is a method of utilizing mixed sludge to prepare porous materials for processing hydrogen sulfide polluted gas, see figure 1 , figure 1 For its flow chart, the devices used include: 1. Balance gas; 2. Gas to be processed; 3. Quartz reaction tube; 4. Tube furnace; 5. Product recovery device; 6. Tail gas monitoring; a. Gas pipeline inlet; b outlet of treated gas. The raw material that adopts is mixed sludge, and it is made up of domestic sludge, electroplating sludge, and the weight content of carbon after domestic sludge drying is 55%; The main metal component after electroplating sludge drying is: iron (Fe) The weight content is 10%; the zinc (Zn) weight content is 2%; the calcium (Ca) weight content is 8.2%, and its specific steps are as follows:

[0022] (1) Mix the dried domestic sludge and electroplating sludge evenly at a mass ratio of...

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Abstract

The invention discloses a method for utilizing mixed sludge for preparing a porous material to treat hydrogen sulfide contamination gas. The method comprises the steps of (1) uniformly mixing domestic sludge and electroplating sludge according to the mass ratio to obtain a mixed sludge particle; (2) filling the mixed sludge particle into a quartz crucible, putting the quartz crucible into a pyrolyzing furnace, and carrying out pyrolytic reaction under N2 atmosphere to obtain a pyrolyzed porous material; (3) filling the porous material into a reaction pipe, feeding hydrogen sulfide into the reaction pipe for carrying out desulfurization, enabling hydrogen sulfide to be selectively catalyzed and oxidized to elemental sulfur, and up-to-standard discharging tail gas after detection; (5) carrying out heating liquefying separation on the elemental sulfur in the reaction pipe, and recovering the elemental sulfur. According to the method, the sludge can be resourcefully utilized, the preparation method of a desulfurizing agent is reduced, the hydrogen sulfide contamination gas can be treated efficiently, the elemental sulfur can be recovered, and up-to-standard discharging is realized.

Description

technical field [0001] The invention relates to a method for treating hydrogen sulfide (H2S) by using mixed sludge to prepare porous materials. 2 S) The method for polluting gas belongs to the technical field of environmental protection of hazardous waste resource utilization and pollution gas prevention and control. [0002] technical background [0003] Hydrogen sulfide (H 2 S) is a kind of malodorous gas, which comes from petroleum industry, natural gas, metallurgy, garbage disposal and other industries. Its existence will cause corrosion of production equipment and poisoning of catalysts, which will adversely affect industrial production. At the same time, it is also a strong neurotoxin, which will cause damage to the eyes, respiratory system and central nervous system of the human body, and even endanger life. Therefore, there are strict regulations on the content of hydrogen sulfide in the "Odor Pollutant Emission Standard" (GB14554-1993) and "Industrial Enterprise De...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/80B01J35/10B01D53/86B01D53/52
CPCB01D53/8612B01J23/002B01J23/80B01J35/10B01J35/1061B01J2523/00B01J2523/23B01J2523/27B01J2523/842
Inventor 张佳王渊健余佳佳宋佳高齐钱光人
Owner SHANGHAI UNIV
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