Visual type harmful gas remover and preparing method

A technology for harmful gases and removers, which is applied in separation methods, chemical instruments and methods, and dispersed particle separation. Capture, easy-to-manipulate effects

Inactive Publication Date: 2005-08-31
无锡优胜美迪环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the alkaline support in this patent is composed of magnesium hydroxide and calcium hydroxide, does not contain a porous structure, and only the surface can absorb gases such as formaldehyde, so the elimination ability is limited
In addition, the color change of the elimination agent obtained by the patent method after reacting with formaldehyde and other substances is not obvious, and the regularity is not strong (depending on the eliminated gas and reaction conditions, blackening, whitening or other changes may occur), when used Inconvenience to users

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] Dissolve 4g KMnO 4 , 0.5g NaHCO 3 In 100ml of water, weigh 100 grams of silica gel and soak it in it, vacuum dry it after 30 minutes, and turn it into red granules or lumps after 4 hours, package it in a container with a hole in the wall, or place it in a container with good air permeability The material such as (but not limited to) non-woven fabric, fiber cloth is made in the pocket, and the outside is sealed with airtight material such as tinfoil. After unsealing, the carrier obtained above is placed in a room or cabinet with formaldehyde. After a certain period of time, the carrier turns from red to brown, indicating that the carrier is saturated with formaldehyde gas.

example 2

[0018] Dissolve 4g KMnO 4 In 0.1M NaOH solution, weigh 100 g of silica gel and soak it, dry it in vacuum after 30 minutes, and take it out after 4 hours. The carrier obtained above is placed in a car with formaldehyde. After a certain period of time, if the carrier changes from red to brown, it means that the carrier has absorbed formaldehyde gas and reached saturation.

example 3

[0020] Dissolve 4g KMnO 4 In 0.1M NaOH solution, weigh 200 grams of molecular sieves and soak them, vacuum dry them after 30 minutes, and take them out after 4 hours. Above-mentioned gained carrier is placed on 1000cm 3 In an environment with a formaldehyde content of 1000ppm, after 5 days, most of the carrier changed from red to brown, and the formaldehyde content in the environment was detected again to be 0ppm.

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PUM

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Abstract

A visualized harmful gas removing agent is prepared from the porous carrier chosen from silica gel, molecular sieve, zeolite, alumina and calcium chloride in the form of powder, particle, or filtering paper, through treating it by potassium permanganate in alkalinecondition. It can capture, adsorb and eliminate volatile and reductive harmful gases. Its result can be shown by the color variation from red to brown.

Description

Technical field [0001] The invention relates to the field of environmental protection treatment and detection, in particular to a visible harmful gas eliminating agent which can be observed by naked eyes and a preparation method thereof. Background technique [0002] The living environment of human beings, especially new houses, new cars and new furniture contain various harmful gases such as formaldehyde, benzene series, ammonia, etc., which are harmful to human health. [0003] Formaldehyde is a colorless irritating gas and is one of the common pollutants in the air indoors and in cars. It often exists in plywood containing urea-formaldehyde resin, including particle board, hardwood plywood, and medium-density fiberboard. Among them, the formaldehyde content of the latter is Highest. Formaldehyde is irritating to the eyes and nose, and long-term exposure may induce cancer. [0004] Benzene series such as benzene and xylene are volatile organic compounds, which are colorl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/34B01D53/81
Inventor 翁龙平曹军
Owner 无锡优胜美迪环保科技有限公司
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