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Method for reducing content of phenol in waste gas

A waste gas and phenol technology, applied in separation methods, chemical instruments and methods, food science, etc., can solve the problems of dull smoking, dirty aftertaste, affecting the taste and smoking quality of cigarette products, etc.

Pending Publication Date: 2021-07-16
ZHENGZHOU TOBACCO RES INST OF CNTC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the phenolic substances in the smoke will produce monotonous tastes such as phenolic and astringent tastes, odors and drug burning sensations, as well as unpleasant and dull smoking tastes, which will add special flavors to the smoke and increase the complexity of the aroma. Sex, causing astringency, spicy taste, unclean aftertaste, etc., thus affecting the taste and smoking quality of cigarette products

Method used

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  • Method for reducing content of phenol in waste gas
  • Method for reducing content of phenol in waste gas
  • Method for reducing content of phenol in waste gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The method for reducing phenol content in waste gas of the present embodiment comprises the following steps:

[0021] 1) The adsorbent used is choline chloride, after choline chloride is dissolved in water (the mass ratio of choline chloride and water is 6:25), it is coated on paper filter paper by gravure printing , after drying and cutting to make a paper filter element, the paper filter element and cellulose acetate filter element are combined to form a paper-cellulose acetate binary composite filter, and the amount of adsorbent added is controlled to 30mg / piece.

[0022] 2) The filter tip is used to filter the smoked cigarette smoke, so as to reduce the content of phenol in the smoke.

Embodiment 2-18

[0024] The method for reducing the phenol content in the exhaust gas of Examples 2-18 differs from that of Example 1 in that: the types of adsorbents are different, which are specifically listed in Table 1.

[0025] The adsorbent kind of table 1 embodiment 2-18

[0026]

[0027]

[0028] In Example 3-6, Example 8-12, and Example 14-18, the hydrogen bond acceptor and the hydrogen bond donor were stirred and mixed at 40-95°C for 2-6 hours, for example, stirred and mixed at 60°C for 3.5 hours, that is Deep eutectic solvents can be formed.

[0029] 2. Experimental example

[0030] In this experimental example, cigarettes are used to investigate the effect of the above-mentioned adsorbents on reducing phenol in cigarette smoke. Specifically, the added amount of the adsorbents is 30 mg. branch －1 , The filters are all acetate-coated paper binary composite filters, and the specifications of the cigarettes are: length 84.1mm, circumference 24.2mm, filter length 25mm (10mm ace...

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Abstract

The invention belongs to the field of waste gas treatment and particularly relates to a method for reducing the content of phenol in waste gas. The method for reducing the content of phenol in the waste gas comprises a step of treating the waste gas by using an absorbent, and the absorbent is quaternary ammonium salt or a eutecticevaporate solvent containing the quaternary ammonium salt; the quaternary ammonium salt is selected from choline chloride and has a structure shown as a formula (1); in the formula (1), R1, R2, R3 and R4 are independently selected from C1-4 alkyl groups; and the eutecticevaporate solvent containing the quaternary ammonium salt is composed of a hydrogen bond acceptor and a hydrogen bond donor, the hydrogen bond acceptor is the quaternary ammonium salt, and the hydrogen bond donor is selected from one of glycerin, 1, 2-propylene glycol, citric acid, malic acid and levulinic acid. According to the method for reducing the phenol content in the waste gas, the quaternary ammonium salt or the eutecticevaporate solvent containing the quaternary ammonium salt is used as the adsorbent for treating the waste gas, the content of phenol in the waste gas can be effectively reduced, and emission poison of the phenol-containing waste gas is reduced.

Description

technical field [0001] The invention belongs to the field of waste gas treatment, and in particular relates to a method for reducing phenol content in waste gas. Background technique [0002] The main source of phenol in cigarette smoke is the pyrolysis of sugars and the cracking of polyphenolic compounds such as rutin and chlorogenic acid. It was listed in the list of 43 harmful substances in cigarette smoke published by Hoffman in 1990. The phenolic compound in cigarette smoke is a kind of cell protoplasm poison, and its mechanism of action is to chemically react with the protein in the cell, denature the protein, and further lead to the deactivation of the cell. In addition, the phenolic substances in the smoke will produce monotonous tastes such as phenolic and astringent tastes, odors and drug burning sensations, as well as unpleasant and dull smoking tastes, which will add special flavors to the smoke and increase the complexity of the aroma. Sex, causing astringency,...

Claims

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Application Information

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IPC IPC(8): A24D3/06A24D3/16B01D53/04
CPCA24D3/06A24D3/16B01D53/04Y02A50/20
Inventor 聂聪孙学辉王嘉琪余晶晶杨松孙培健潘立宁颜权平彭斌贾云祯
Owner ZHENGZHOU TOBACCO RES INST OF CNTC
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