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Composite eluent combination, its application and fermentation tail gas treatment method using it

A technology of eluting agent and exhaust gas, which is applied in separation methods, chemical instruments and methods, and separation of dispersed particles. It can solve the problems of long strain screening period, low odor removal rate, and large equipment volume, and achieve the concentration of exhaust gas odor. The effect of obvious value, simple preparation method and wide source of raw materials

Active Publication Date: 2021-04-02
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the combination of traditional acidic or alkaline eluents and clean water has strong universality, but weak pertinence and low odor removal rate; activated carbon adsorption has high removal rate in a short period of time, but it fails quickly, and the removal rate changes greatly after a period of time ; The microbial deodorization method has a long period of strain screening, large equipment volume, high initial investment, and the removal rate is affected by the microbial status

Method used

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  • Composite eluent combination, its application and fermentation tail gas treatment method using it

Examples

Experimental program
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Effect test

Embodiment 1

[0038] A composite eluent combination for treating fermentation tail gas, including a first-stage eluent and a second-stage eluent. The first stage eluent is NaOH or Na 2 CO 3 and NaClO, the second eluent is HCl and H 2 o 2 . The chemical substances are all industrial grade.

[0039] The method of treating tylosin fermentation tail gas by using the combination of the above-mentioned compound eluents includes the following steps.

[0040] Pump the first-stage eluent into the liquid storage tank of the first-stage vertical packing absorption tower, the total mass of the liquid is about 10,000kg, the concentration of NaOH is 0.01mol / L, the pH value is 12, and the mass concentration of NaClO is about 0.2%. ;Pump the second-stage eluent into the liquid storage tank of the second-stage vertical packing absorption tower, the total mass of the liquid is about 10,000kg, the molar concentration of HCl is 0.001mol / L, and the pH value is 3. h 2 o 2 The mass concentration is about ...

Embodiment 2

[0043] A composite eluent combination for treating fermentation tail gas, including a first-stage eluent and a second-stage eluent. The first stage eluent is NaOH or Na 2 CO 3 and NaClO, the second eluent is HCl and H 2 o 2 . The chemical substances are all industrial grade.

[0044] The method for treating erythromycin fermentation tail gas by using the combination of the above-mentioned compound eluents includes the following steps.

[0045]Pump the first-stage eluent into the liquid storage tank of the first-stage vertical packed absorption tower, the total mass of the liquid is about 20,000kg, the concentration of NaOH is 0.01mol / L, the pH value is 12, and the mass concentration of NaClO is about 0.5%. ;Pump the second-stage eluent into the liquid storage tank of the second-stage vertical packed absorption tower, the total mass of the liquid is about 20,000kg, the molar concentration of HCl is 0.001mol / L, and the pH value is 3; H 2 o 2 The mass concentration is abou...

Embodiment 3

[0048] A composite eluent combination for treating fermentation tail gas, including a first-stage eluent and a second-stage eluent. The first stage eluent is NaOH or Na 2 CO 3 and NaClO, the second eluent is HCl and H 2 o 2 . The chemical substances are all industrial grade.

[0049] The method of treating tiamulin fermentation tail gas by using the combination of the above compound eluents includes the following steps.

[0050] Pump the first-stage eluent into the liquid storage tank of the first-stage vertical packed absorption tower, the total mass of the liquid is about 10,000kg, the concentration of NaOH is 0.01mol / L, the pH value is 12, and the mass concentration of NaClO is about 0.1%. ;Pump the second-stage eluent into the liquid storage tank of the secondary vertical packed absorption tower, the total mass of the liquid is about 10,000kg, the molar concentration of HCl is 0.0001mol / L, and the pH value is 4; H 2 o 2 The mass concentration is about 1%. At this ti...

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Abstract

A composite eluent combination for treating fermentation exhaust and an application thereof are provided. The composite eluent combination for treating fermentation exhaust comprises a first-stage eluent and a second-stage eluent, wherein the first-stage eluent comprises a compound agent of sodium hydroxide or sodium carbonate and sodium hypochlorite, and the second-stage eluent comprises hydrochloric acid and hydrogen peroxide. The application comprises the followings: adding the first-stage eluent to a first-stage spray tower, adding the second-stage eluent to a second-stage spray tower, andopening a reflux pump to fully wash the fermentation exhaust, so that the odor of the exhaust is greatly alleviated. The removal rate of odorous substances can reach 78%. The structures of the original spray towers do not need to be changed, so that the construction cost and the running cost are saved, and the composite eluent combination has a good application and promotion prospect.

Description

technical field [0001] The invention belongs to the technical field of exhaust gas purification and treatment, and in particular relates to a composite eluent combination, its application and a method for treating fermentation tail gas using the same. Background technique [0002] The main components of fermentation waste gas are water vapor and air, but there are traces of nitrogen oxides, sulfides, volatile organic compounds, and non-methane total hydrocarbons and other odorous substances. The direct discharge will pollute the air at the factory boundary, and the odorous air will also affect the physical and mental health of the surrounding residents. With the increasingly stringent exhaust gas emission standards in the pharmaceutical industry, higher requirements are put forward for the odor concentration control technology of fermentation tail gas. [0003] Treatment methods for fermentation tail gas odor are mainly chemical leaching, activated carbon adsorption, ozone ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/78B01D53/56B01D53/48
CPCB01D53/48B01D53/56B01D53/78
Inventor 王东升杨晓芳焦茹媛吕明晗
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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