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Molecular sieve-based glass fiber framework adsorbing material as well as preparation method and application thereof

A glass fiber and adsorption material technology, which is applied in the field of molecular sieve-based glass fiber skeleton adsorption materials and its preparation, can solve the problems of low solid content of molecular sieves, uneven dispersion of molecular sieves, and no adsorption effect, and achieves a simple and reasonable preparation method. The effect of reducing molecular sieve content and avoiding waste of raw materials

Pending Publication Date: 2021-04-09
BEIJING LONGTAO ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The molecular sieve adsorption material made by this method is easy to fall off, the molecular sieve has low solid content and short life.
At the same time, extrusion molding is adopted, such as honeycomb body, particles, etc., although they can play an adsorption role, but the contact time between the internal adsorption material and organic waste gas is too short to achieve adsorption, and the effective utilization rate of molecular sieves is low.
[0003] In addition, in the prior art of the adsorption wheel core, there is also a solution of using molecular sieves and fiber raw materials to mix together and then preparing adsorption materials by paper molding. However, this solution has uneven dispersion of molecular sieves, low retention of solid molecular sieves, large losses, and high production costs. High, the adsorption capacity of the adsorption material per unit mass is low, which cannot meet the requirements of industrial organic waste gas treatment at the present stage

Method used

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  • Molecular sieve-based glass fiber framework adsorbing material as well as preparation method and application thereof
  • Molecular sieve-based glass fiber framework adsorbing material as well as preparation method and application thereof
  • Molecular sieve-based glass fiber framework adsorbing material as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0055] A method for preparing a molecular sieve-based glass fiber skeleton adsorption material, comprising the steps of:

[0056] S100: Weigh 1 g of polyethylene oxide with a molecular weight of 20 million and 10,000 g of deionized water, stir them evenly, and prepare an aqueous solution of polyethylene oxide with a mass concentration of 0.01% for later use.

[0057] S200: Weigh 10 g of wood pulp fiber and 90 g of glass fiber respectively, and set aside. The wood pulp fiber is coniferous wood pulp cellulose with a length of 3 mm and a diameter of 50 μm; the glass fiber is an alkali-free glass fiber with a length of 4 mm and a diameter of 7 μm.

[0058] S300: After mixing the glass fiber and wood pulp fiber weighed by S200, put it in a standard fiber de-flatter, add 1000g of deionized water, and then de-fibrillate the fiber; Filter off excess water; according to the amount of polyethylene oxide added to be 1% of the mass of glass fiber, add 9000g of the solution prepared by S1...

Embodiment 2

[0064] A method for preparing a molecular sieve-based glass fiber skeleton adsorption material, comprising the steps of:

[0065] S100: Weigh 2 g of polyacrylamide with a molecular weight of 30 million and 10,000 g of deionized water, stir them evenly, and prepare an aqueous solution of polyacrylamide with a mass concentration of 0.02% for later use.

[0066] S200: Weigh 20 g of wood pulp fiber and 80 g of glass fiber respectively, and set aside. The wood pulp fiber is broad-leaved wood pulp cellulose with a length of 4 mm and a diameter of 60 μm; the glass fiber is medium-alkali glass fiber with a length of 4 mm and a diameter of 7 μm.

[0067] S300: After mixing the glass fiber and wood pulp fiber weighed by S200, put it in a standard fiber deconcentrator, add 1000g of deionized water, and then demineralize the fiber; the speed of the demineralizer is set to 20000rad / min, and the deconcentration time is 3min. Filter off the excess water; according to the amount of polyacryl...

Embodiment 3

[0073] A method for preparing a molecular sieve-based glass fiber skeleton adsorption material, comprising the steps of:

[0074] S100: Weigh 2 g of polyethylene oxide with a molecular weight of 20 million and 10,000 g of deionized water, stir them evenly, and prepare an aqueous solution of polyethylene oxide with a mass concentration of 0.02% for later use.

[0075] S200: Weigh 15g of wood pulp fiber and 85g of glass fiber respectively, and set aside. The wood pulp fibers are coniferous wood pulp fibers with a length of 3 mm and a diameter of 50 μm; the glass fibers are alkali-free glass fibers with a length of 4 mm and a diameter of 7 μm.

[0076] S300: After mixing the glass fiber and wood pulp fiber weighed by S200, put it in a standard fiber de-flatter, add 1000g of deionized water, and then de-fiber the fiber; set the speed of the de-flaker to 10000rad / min, and the de-flatter time to 3min. Filter off excess water; according to the amount of polyethylene oxide added to b...

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Abstract

The invention relates to the technical field of VOCs adsorption and purification materials, and particularly discloses a molecular sieve-based glass fiber skeleton adsorption material as well as a preparation method and application thereof. The method for preparing the molecular sieve-based glass fiber skeleton adsorbing material comprises the following steps: providing a substrate material prepared by mixing wood pulp fibers and glass fibers and then carrying out wet molding; and enabling the surface of the substrate material to be in contact with a molecular sieve suspended emulsion, and combining suspended components in the molecular sieve suspended emulsion with the substrate material so as to obtain the molecular sieve-based wet glass fiber skeleton adsorbing material. The method is simple and convenient to operate and convenient for industrial production; and the prepared material is high in effective solid content of the molecular sieve, good in compressive strength, low in cost and excellent in adsorption performance and can be widely applied to purification treatment of industrial organic waste gas.

Description

technical field [0001] The invention relates to the technical field of VOCs adsorption and purification materials. Specifically, it relates to a molecular sieve-based glass fiber skeleton adsorption material and its preparation method and application. Background technique [0002] Industrial organic VOCs waste gas contains a large amount of volatile organic compounds such as benzene, toluene, and xylene. The continuous discharge of these substances into the atmosphere will do great harm to the human body, and is carcinogenic, teratogenic, and mutagenic. At present, the most effective way to deal with low-concentration and high-volume industrial organic waste gas is the molecular sieve runner concentration adsorption-desorption + catalytic combustion process. The core component of the molecular sieve concentration runner is the adsorption wheel core, which uses molecular sieve as the main adsorption material. Usually formed by coating onto glass fiber paper. The molecular s...

Claims

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Application Information

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IPC IPC(8): B01J20/16B01J20/30B01J20/32B01D53/02
CPCB01J20/16B01J20/3042B01J20/3202B01D53/02B01D2253/25B01D2257/708Y02A50/20
Inventor 史东军柴磊昌李马刚孙传凯许硕潘涛郭行
Owner BEIJING LONGTAO ENVIRONMENTAL TECH CO LTD
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