Visual type harmful gas remover and preparing method

A harmful gas and eliminating agent technology, applied in separation methods, chemical instruments and methods, and separation of dispersed particles, can solve the problems of insignificant color change, blackening, and limited elimination ability, and achieve simple preparation process, simple use, easy-to-operate effect

Inactive Publication Date: 2009-12-02
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

[0017] 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

[0019] 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

[0021] 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 visible harmful gas eliminating agent and its preparation method are obtained by treating a porous carrier with permanganate under alkaline conditions. The porous carrier can be solid silica gel with good adsorption function, molecular sieve, zeolite, alumina, calcium chloride, powder, regular or irregular particles, or filter paper. Permanganate is an alkali metal salt of permanganate, and potassium permanganate is the best. Alkaline conditions are provided and maintained by potassium hydroxide, sodium hydroxide, bicarbonate, phosphate, borate or ammonium chloride-ammonia solution. The present invention can capture, adsorb and eliminate various volatile and reducing harmful substances. Gases, and show noxious gas removal results by a clear, regular color change 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 Patents(China)
IPC IPC(8): B01D53/81B01D53/34
Inventor 温龙平曹军
Owner 无锡优胜美迪环保科技有限公司
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