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Scavenger with efficient formaldehyde purifying function

A formaldehyde purification and scavenger technology, which is applied in deodorization, solvent extraction, solid solvent extraction, etc., can solve the problems that free formaldehyde cannot be actively captured and quickly removed, and the removal effect is not ideal, so as to achieve easy continuous and stable production and reduce secondary pollution. Pollution and cost reduction effects

Inactive Publication Date: 2019-03-08
福建省居乐康环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently commercially available formaldehyde scavengers need to be in contact with free formaldehyde for a long time before they can remove formaldehyde. They cannot actively capture and quickly remove free formaldehyde, and the removal effect is not ideal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: The natural plant extract is a powder mixture of poison grass and rubber tree as raw materials, and the amino acids are extracted by the supercritical method. The supercritical extraction machine is controlled at a temperature of 35°C and a pressure of 9MP. The liquid is in a supercritical state. CO2 is used as a solvent, and natural plants are crushed and mixed according to the proportion, and then added to a supercritical extraction machine for extraction for 2 hours to separate natural amino acids.

[0025] The 4a molecular sieve and the diatomaceous earth were respectively modified with copper chloride before use. The modification steps are as follows: Step 1: Add a 0.5mol / L hydrochloric acid solution to the 4a molecular sieve or diatomaceous earth, and solidify The liquid ratio is 1:10, then ultrasonic dispersion is performed to obtain a homogeneous solution, washed to PH=7, and the solution is heated; Step 2: Add deionized water to the transition metal hydr...

Embodiment 2

[0028] Example 2: The natural plant extract is a powder mixture of Duck's feet and White palm as raw materials, and the amino acids are extracted by supercritical method. The supercritical extraction machine is controlled at a temperature of 40°C and a pressure of 10MP. Liquid CO2 is used as a solvent, and natural plants are crushed and mixed according to the ratio, and then added to a supercritical extraction machine for extraction for 2 hours to separate natural amino acids.

[0029] The 4a molecular sieve and the diatomaceous earth were respectively modified with manganese chloride before use. The modification steps are as follows: Step 1: Add a hydrochloric acid solution with a concentration of 8mol / L to the 4a molecular sieve or diatomaceous earth, solid-liquid The ratio is 1:30, then ultrasonic dispersion is performed to obtain a homogeneous solution, washed to pH=7, and the solution is heated; Step 2: Add deionized water to the transition metal hydrochloride and stir to dis...

Embodiment 3

[0032] Example 3: The natural plant extract is a powder mixture of drug grass, rubber tree, duck's foot wood, and white palm as raw materials, and the amino acids are extracted by supercritical method. The supercritical extraction machine is controlled at a temperature of 38°C and a pressure of 10MP. , Using supercritical liquid CO2 as the solvent, the natural plants are crushed and mixed according to the proportion, and then added to the supercritical extractor for extraction for 2 hours to separate the natural amino acids.

[0033] The 4a molecular sieve and the diatomaceous earth were respectively modified with cerium nitrate before use. The modification steps are as follows: Step 1: Add 5mol / L hydrochloric acid solution to the 4a molecular sieve or diatomaceous earth, and the solid-liquid ratio It is 1:20, then ultrasonically dispersed to obtain a homogeneous solution, washed to PH=7, and the solution is heated; Step 2: Add deionized water to the transition metal hydrochloride...

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PUM

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Abstract

The invention discloses a scavenger with an efficient formaldehyde purifying function. The scavenger comprises the following components in percentages by weight: 4-6% of a natural plant extract, 1-3%of a 4a molecular sieve, 1-3% of kieselguhr, 10-14% of nano TiO2 sol, 1-3% of dodecylbenzene sodium sulfonate, 1-3% of enzyme, 2-4% of lemon wax, 2-4% of tea leaves and the balance of deionized water.The scavenger has the advantages that a powder mixture of more than two of lemon balm, ficus elastic, ivy tree barks and spathiphyllum kochii is used as a raw material, by amino acid extracted by a supercritical method, the ratio of other chemical raw materials is reduced correspondingly, and therefore, secondary pollution caused by an air purifying agent can be relieved; and the 4a molecular sieve and the kieselguhr are added and are modified by transition metal, the adsorption ability of the 4a molecular sieve and the kieselguhr is greatly enhanced, the 4a molecular sieve and the kieselguhr belong to natural zeolite and are low in price, and thus, the cost of the scavenger is reduced; and by addition of the tea leaves, the scavenger is fresh while an effect of removing the formaldehydeis enhanced.

Description

Technical field [0001] The invention relates to a scavenger with efficient formaldehyde purification function, and belongs to the technical field of formaldehyde purification. Background technique [0002] Formaldehyde in indoor air has become the main pollutant that affects human health, especially in winter, formaldehyde is the most harmful to human body. The main sources of formaldehyde in domestic air in our country are as follows: (1) Artificial boards such as plywood, blockboard, medium density fiberboard and particleboard used for interior decoration. The adhesive used in the production of wood-based panels uses formaldehyde as the main component. The residual formaldehyde in the panel and the formaldehyde that has not participated in the reaction will be gradually released to the surrounding environment, which is the main body of formaldehyde in the indoor air. ⑵ Furniture made of wood-based panels. In order to pursue profit, some manufacturers use unqualified boards or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/72B01D53/84A61L9/013A61L9/014B01D11/02
CPCA61L9/013A61L9/014B01D11/0203B01D11/0288B01D53/72B01D53/84Y02A50/20
Inventor 林平平
Owner 福建省居乐康环保科技有限公司
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