A kind of adsorption material for reducing the release amount of hydrogen cyanide in flue gas and preparation method thereof

An adsorption material, a technology for hydrocyanic acid, which is applied in chemical instruments and methods, tobacco, e-liquid filter elements, etc., can solve the problems of reducing the amount of hydrocyanic acid released, not seeing relevant reports, and reducing the quality of cigarette samples. Release volume, good promotion and application significance, and the effect of broadening the field of use

Active Publication Date: 2016-04-27
CHINA TOBACCO HENAN IND +1
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are a lot of acidic substances in the mainstream smoke of cigarettes. Simply adding alkaline substances to the filter cannot achieve the purpose of selectively reducing hydrocyanic acid. The taste of smoke can reduce the quality of cigarette samples
[0004] Polyphthalocyanine metal compounds are widely used in the field of catalysis. Since this kind of catalytic adsorption material can adsorb hydrogen cyanide gas at room temperature, it overcomes the disadvantages of general catalytic adsorption materials that can only play an adsorption role at high temperatures. Therefore, It can effectively remove low-concentration hydrogen cyanide gas in yellow phosphorus tail gas and closed calcium carbide furnace tail gas. However, there are no relevant reports on the catalytic removal of harmful substances in cigarette smoke by polyphthalocyanine metal compounds.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of adsorption material for reducing the release amount of hydrogen cyanide in flue gas and preparation method thereof
  • A kind of adsorption material for reducing the release amount of hydrogen cyanide in flue gas and preparation method thereof
  • A kind of adsorption material for reducing the release amount of hydrogen cyanide in flue gas and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The adsorbent material prepared in this example that can selectively reduce the release of hydrocyanic acid in mainstream cigarette smoke is prepared by the following method:

[0023] 1. Take 30g of activated carbon, wash it with deionized water until the filtrate is clear, then dry the porous material in a blast oven at 100°C for 10 hours, and cool it naturally to room temperature for later use;

[0024] 2. Dissolve sulfonated cobalt phthalocyanine in 200g of 10% sodium hydroxide aqueous solution, wherein the mass ratio of sodium hydroxide to sulfonated cobalt phthalocyanine is 1:2.5×10 -4 , and then soak the porous material cooled to room temperature in step 1 in the prepared solution, and stir for 20 hours. After soaking, filter the porous material and dry it in a blast oven at 100°C for 10 hours;

[0025] 3. The porous material dried in step 2 is roasted in an argon atmosphere at 400°C for 5 hours, cooled to room temperature, and then taken out to obtain an adsorpti...

Embodiment 2

[0033] This embodiment is the same as embodiment 1, and the basic substance in the alkaline solution in the adjustment step 2 is calcium hydroxide, and the mass ratio of calcium hydroxide: cobalt sulfonated phthalocyanine is 1: 1 × 10 -4 , the firing temperature in step 3 is 300°C, and the firing time is 3 hours. The adsorption material obtained in this example that can reduce the release of hydrocyanic acid in mainstream cigarette smoke has a pore diameter of 4 nm and a specific surface area of ​​500 m 2 / g, particle size is 30 mesh.

[0034] The obtained adsorbent material, which can reduce the release of hydrocyanic acid in the mainstream smoke of cigarettes, is added to the middle of the cigarette filter to make a three-stage composite filter. The cigarette filter tip of the material was used as a control sample for a cigarette smoking experiment.

[0035] The results are shown in Table 2, wherein the selective reduction rate of chemical components in cigarette smoke = c...

Embodiment 3

[0039] This embodiment is the same as Example 1, the alkaline substance in the alkaline solution in the adjustment step 2 is sodium bicarbonate, the catalyst is polyphthalocyanine copper, and the mass ratio of sodium bicarbonate: polyphthalocyanine copper is 1: 1.5 × 10-4 , the calcination temperature in step 3 is 400°C, and the calcination time is 5 hours. The adsorption material obtained in this example that can reduce the release of hydrocyanic acid in mainstream cigarette smoke has a pore diameter of 2nm and a specific surface area of ​​800m 2 / g, particle size is 20 mesh.

[0040] Add the obtained adsorbent material, which can reduce the release of hydrocyanic acid in the mainstream smoke of cigarettes, to the middle of the cigarette filter to make a three-stage composite filter. The cigarette filter tip of the material was used as a control sample for a cigarette smoking experiment.

[0041] The results are shown in Table 3, wherein the selective reduction rate of chemi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
pore sizeaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to view more

Abstract

The invention belongs to the technical field of cigarette harm reduction and tar reduction, and in particular relates to an adsorption material capable of selectively reducing the release of hydrocyanic acid in mainstream smoke of cigarettes and a preparation method thereof. The adsorption material uses a porous material as a carrier, and sequentially passes through processes such as impregnation, drying, and roasting to load the polyphthalocyanine metal compound on the surface of the carrier, so that it can play a catalytic role in the process of selective adsorption of smoke, thereby greatly reducing the cigarette mainstream. The amount of hydrogen cyanide released in the flue gas. The invention broadens the application field of polyphthalocyanine metal compounds, increases the types of adsorption materials for reducing hydrogen cyanide in the technical field of tobacco harm reduction, and provides the adsorption material with simple preparation method, convenient operation, and selective adsorption of hydrogen cyanide The ability is high, and the raw materials are easy to obtain and the cost is low, so it has good significance for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of cigarette harm reduction and tar reduction, and in particular relates to an adsorption material capable of selectively reducing the release of hydrocyanic acid in mainstream smoke of cigarettes and a preparation method thereof. Background technique [0002] Hydrocyanic acid (HCN) is a highly toxic substance with a threshold value of only 10ppm to the human body. It is a very active inhibitor of several respiratory enzymes. It can combine with ferricytochrome oxidase in the human body to generate cyanide ferricytochrome Oxidase, so that it loses the role of transmitting oxygen, and then causes tissue hypoxia and suffocation. Cigarette mainstream and sidestream smoke both contain hydrocyanic acid, with a content of 30-300 μg / cigarette, which is mainly produced by the cracking of amino acids and related compounds at 700-1000 °C. Ranked second among harmful ingredients. Therefore, research on methods that c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J31/26B01J31/28B01J31/32A24D3/06
Inventor 付鹏马宇平赵清香聂聪刘民英田海英盛亚落李怀奇周浩陈伟
Owner CHINA TOBACCO HENAN IND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap