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High-performance zeolite composite adsorption material, and preparation method and application thereof

A composite adsorption material, high-performance technology, applied in separation methods, chemical instruments and methods, alkali metal compounds, etc., can solve the problem of weak binding force between zeolite and carrier surface, easily destroyed molecular sieve lattice, and reduced molecular sieve adsorption capacity, etc. problem, to achieve the effect of fast desorption rate, fast absorption/desorption rate and fast diffusion speed

Inactive Publication Date: 2018-12-18
JIANGSU RUIDA TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its unique honeycomb structure, honeycomb zeolite has good aerodynamic performance, high porosity, small bed pressure drop, and fast adsorption and desorption rate, but it has disadvantages such as low mechanical strength and easy pulverization.
The manufacturing methods of honeycomb zeolite mainly include extrusion method and impregnation method. For example, patent CN101905145A discloses a molecular sieve honeycomb material and its preparation method. It is easy to be damaged, thus losing the adsorption capacity; while the impregnation method has complicated preparation procedures and high cost, and the binding force between the zeolite and the carrier surface is not strong, and the molecular sieve is prone to peeling off, resulting in a decrease in adsorption efficiency
Patent document CN102389773A discloses a method for manufacturing a molecular sieve honeycomb body that adsorbs volatile organic compounds. This process solves the problems of molecular sieve adsorption capacity reduction and molecular sieve peeling off, but the material needs to be incinerated at a high temperature of 650-700 ° C. high power consumption

Method used

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  • High-performance zeolite composite adsorption material, and preparation method and application thereof
  • High-performance zeolite composite adsorption material, and preparation method and application thereof
  • High-performance zeolite composite adsorption material, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 2.3g of 70°SR wood pulp fiber with a beating degree, 10g powdered zeolite, 0.8g special fiber (diameter 5μm, length 6mm), 1g polyvinyl alcohol, 1.1g melamine phosphate, 33.3kg water, and use after mixing the components The stirrer performs dispersion for 30 minutes. Put the uniformly dispersed mixture into a water filter to filter water, shape and dry, and use scanning electron microscope to characterize it, such as figure 1 Shown by figure 1 It can be seen that the wood pulp fibers have a dense continuous structure, and the special fibers are intertwined in disorder and form a skeleton. The zeolite is fixed in the large gaps of the skeleton. This structure helps the zeolite to disperse and thereby facilitates the adsorption of adsorbates. Diffusion mass transfer.

[0027] Comparative products were prepared using the same formula and process mentioned above. Comparative 1 used polyester fiber instead of special fiber, and Comparative 2 used glass fiber instead of spe...

Embodiment 2

[0034] Weigh 1.5g of 40°SR wood pulp fiber with beating degree, 0.15g special fiber (diameter 5μm, length 6mm), 1.5g chitosan, 11.25g powdered zeolite, 0.3 aluminum phosphate, 0.3g magnesium phosphate, 33.3kg water, After mixing the components, use a stirrer to disperse for 30 minutes. Put the evenly dispersed mixture into a water filter for water filtering, shape and dry.

Embodiment 3

[0036] Weigh 2.4g of beating degree 50°SR wood pulp fiber, 0.75g special fiber (diameter 10μm, length 10mm), 0.9g starch, 9.9g powdered zeolite, 0.55g aluminum phosphate, 0.5g magnesium phosphate, 3.34kg water, each After the components are mixed, they are dispersed with a stirrer for 15 minutes. Put the evenly dispersed mixture into a water filter for water filtering, shape and dry.

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Abstract

The invention discloses a high-performance zeolite composite adsorption material, and a preparation method and an application thereof. The composite material is prepared from zeolite, wood pulp fibers, special fibers, a water-insoluble flame retardant and an adhesive. The zeolite, the special fibers and the water-insoluble flame retardant are added to the prepared composite adsorption material, sothe composite adsorption material has the characteristics of high flame retardancy, good hydrophobicity, good thermal stability, good chemical stability, well-developed pore structure, large specificsurface area, high mechanical strength, no efflorescence and adjustable gas passage, and is especially suitable for the adsorption and purification treatment of various VOCs waste gases. The above raw materials have wide sources, the technology process is simple, and the composite adsorption material can be freely processed to form fiber products (felt, belt and cloth) with different forms, and has the advantages of strong adsorption capacity, realization of in-situ regeneration and recycling, fast adsorption / desorption rate and small pressure drop when applied to fixed bed adsorption and rotary adsorption.

Description

Technical field [0001] The invention belongs to the technical field of functional materials, and specifically relates to a high-performance zeolite composite adsorption material and a preparation method and application thereof. Background technique [0002] VOCs (Volatile Organic Compounds) generally refer to organic compounds with a boiling point of 50-260°C under normal pressure and a saturated vapor pressure of more than 134 Pa at room temperature, and are highly volatile organic compounds. The adsorption method has the advantages of high treatment efficiency, simple operation, stable operation, etc., and is widely used in the treatment of various VOCs gases. [0003] The commonly used adsorbents for adsorption are activated carbon and zeolite. Activated carbon has rich pores, large specific surface area, and good broad-spectrum applicability; zeolite has a uniform crystal structure, and the pore diameter has a "molecular sieve" effect, and has a certain selective adsorption. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30B01D53/02
CPCB01D53/02B01D2257/708B01J20/165B01J20/24B01J20/2803B01J20/28045
Inventor 张东辉付博周乔焦亮田彩霞曲凡玉张涛戴荪左宋林乔维川张磊李兴民
Owner JIANGSU RUIDA TECH CO LTD
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