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Waste gas comprehensive purification process in feed processing industry

A technology of feed processing and purification technology, which is applied in the field of animal breeding and odorous gas comprehensive purification technology, can solve problems such as no targeted solutions, achieve efficient collaborative processing, ensure reliable operation, and operate with low energy consumption.

Inactive Publication Date: 2021-03-16
ZHANGJIAGANG AIER ENVIRONMENTAL PROTECTION ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] To sum up, there is currently a lack of a feasible treatment process that can economically and effectively deal with the odor generated in the feed processing industry, especially in the aquatic product processing process. There are no targeted solutions and related patents in the industry.

Method used

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  • Waste gas comprehensive purification process in feed processing industry
  • Waste gas comprehensive purification process in feed processing industry

Examples

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Embodiment 1

[0032] combine figure 1 As shown, an aquatic product workshop uses a large amount of fish meal and shrimp meal as raw materials to produce extruded feed, which produces a large amount of foul smelling gas, which seriously pollutes the site environment and surrounding residential areas. After collecting statistics, the exhaust gas emission is ~200,000m 3 / h, the temperature is 50-80°C, and the water vapor content is close to saturation. The operator reported that the intensity of the exhaust gas odor has reached an unbearable level, and the surrounding residents complained strongly. After analysis, the main odorous substances are trimethylamine, ammonia and hydrogen sulfide, and the initial concentration ranges from 1 to 50 mg / m 3 , The factory is equipped with a 4t / h gas-fired steam boiler, and the exhaust gas temperature of the boiler is ~150°C. After research, innovation and trial and error, the governance measures formulated are:

[0033] (1) Collect exhaust gas from al...

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Abstract

The invention discloses a waste gas comprehensive purification process in the feed processing industry. The waste gas comprehensive purification process comprises the following steps: (1) collecting waste gas through negative pressure generated by an induced draft fan; introducing the waste gas into a spray tower and spraying acid liquor to neutralize alkaline components in the waste gas; (2) introducing the high-temperature flue gas into the waste gas, and simultaneously removing hydrogen sulfide and sulfur dioxide by utilizing Claus reaction; (3) oxidizing hydrogen sulfide and a small amountof organic sulfur into sulfur under the catalytic action of a fine desulfurizing agent, and adsorbing the sulfur into micropores; and (4) removing residual peculiar smell organic matters by utilizingdeveloped micropores and specific surface area of the activated carbon. According to the waste gas purification process in the feed processing industry, efficient removal and resource recovery of organic matters in factory waste gas can be realized, meanwhile, efficient cooperative treatment is performed on boiler flue gas, favorable operating conditions are provided for an activated carbon adsorption unit, the removal rate of odorous substances can reach 99% or above, and the intensity of odor substances is reduced from unbearable 5 to obvious odor 3 or below.

Description

technical field [0001] The invention relates to the technical field of gas purification, in particular to a comprehensive purification process for odor gas in the feed processing industry. The present invention can also be used in similar fields such as animal breeding. Background technique [0002] In recent years, with the improvement of people's living standards and the development of large-scale breeding industry, the field of feed processing has also developed rapidly. In the new normal of economy and environmental protection, the long-neglected environmental protection issues of the feed industry are facing urgent requirements for transformation and upgrading, and the waste gas treatment problems such as odor control of feed processing enterprises have become a huge constraint on the development of the industry. Many processing enterprises have a foul smell, which can affect the distance of 1-2km. The operators are deeply affected by it, and the surrounding residents ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/75B01D53/42B01D53/48B01D53/52B01D53/54B01D53/58B01D53/02
CPCB01D53/75B01D53/42B01D53/58B01D53/54B01D53/52B01D53/523B01D53/485B01D53/02B01D2253/102B01D2257/306B01D2257/708B01D2257/90
Inventor 王月昶刘丽艳赵春宇
Owner ZHANGJIAGANG AIER ENVIRONMENTAL PROTECTION ENG CO LTD
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