High-performance composite adsorbing material and preparing 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 problems of poor adsorption of small molecular substances, the adsorption effect is not as good as activated carbon, zeolite specific surface area, etc. Tunable channels, fast adsorption/desorption rates, and fast diffusion effects

Inactive Publication Date: 2019-01-04
NANJING FORESTRY UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the relatively small specific surface area of ​​zeolite and its poor adsorption effect on small molecular substances such as methanol, acetone, and ethyl acetate, the adsorption effect is not as good as that of activated carbon. Honeycomb zeolite also has the disadvantages of low mechanical strength and easy pulverization.

Method used

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  • High-performance composite adsorbing material and preparing method and application thereof
  • High-performance composite adsorbing material and preparing method and application thereof
  • High-performance composite adsorbing material and preparing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 2.2g beating degree of 62 ° SR wood pulp fiber, 0.8g special fiber (diameter 5μm, length 6mm), 1.0g polyvinyl alcohol, 5g powdered zeolite, 5g powdered activated carbon, 1.1g water-insoluble flame retardant, 20kg Water, after mixing the components, disperse with a mixer for 30 minutes. Put the uniformly dispersed mixed material into the water filter machine to form and dry it, and use scanning electron microscope to characterize it, as shown in figure 1 shown by figure 1 It can be seen that the wood pulp fiber has a dense continuous structure, and the special fibers are intertwined in a disorderly manner to form a skeleton, and the zeolite and activated carbon are fixed in the large gaps of the skeleton. Facilitate the diffusion and mass transfer of adsorbate.

[0026] The same formula and process as above were used to prepare comparative products. In comparison 1, polyester fiber was used to replace special fiber, and in comparison 2, glass fiber was used to re...

Embodiment 2

[0033] Take by weighing 1.8g degree of beating and be 40 ° SR wood pulp fiber, 0.6g special fiber (diameter 5 μ m, length 6mm), 2.25g chitosan, 6.75g powdered zeolite, 3g powdered active carbon, 0.6g aluminum hydroxide, 33.3kg water , After mixing the components, disperse with a stirrer for 30 minutes. Put the uniformly dispersed mixed material into a water filter machine to form and dry.

Embodiment 3

[0035] Take by weighing 2.25g degree of beating and be 50 ° SR wood pulp fiber, 0.75g special fiber (diameter 10 μm, length 10mm), 0.9g starch, 4.95g powdered zeolite, 4.95g powdered active carbon, 0.6g aluminum phosphate, 0.6g magnesium phosphate, 3.34kg of water, after mixing the components, disperse with a stirrer for 15 minutes. Put the uniformly dispersed mixed material into a water filter machine to form and dry.

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Abstract

The invention discloses a high-performance composite adsorbing material and a preparing method and application thereof. The composite material is prepared from powdery zeolite, powdery active carbon,wood pulp fibers, special fibers, an insoluble fire retardant and an adhesive. Multiple components of the special fibers, the active carbon, the zeolite and the insoluble fire retardant are added intothe composite adsorbing material prepared with the method, and the composite adsorbing material has the advantages of being high in fire resistance, good in hydrophobicity, heat stability and chemical stability, developed in pore structure, large in specific area, high in mechanical strength, not prone to pulverization, controllable in gas channel, wide in application range and the like, and is particularly suitable for adsorption purification of all kinds of VOCs waste gas. According to the high-performance composite adsorbing material and the preparing method and application thereof, a source of raw materials is wide, the technology process is simple, fiber products (felt, bands, cloth and the like) with different forms can be freely processed, and the composite adsorbing material has the advantages of being high in adsorption capacity, capable of achieving in-situ regeneration and recycling, high in adsorption/desorption rate, small in pressure drop and the like in application of fixed bed adsorption and rotating wheel adsorption.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a high-performance composite adsorption material and its preparation method and application. Background technique [0002] VOCs (Volatile Organic Compounds) generally refer to organic compounds with a boiling point between 50-260°C under normal pressure and a saturated vapor pressure exceeding 134Pa at room temperature, and are highly volatile. VOCs exhaust gas treatment technologies include two categories: recovery method and elimination method, among which adsorption method is the mainstream unit technology for medium and low concentration VOCs treatment. [0003] Commonly used adsorbents are honeycomb activated carbon and honeycomb zeolite. Activated carbon has rich pores, large specific surface area, and good broad-spectrum applicability. Honeycomb activated carbon has been widely used in the treatment of various VOCs gases in recent years, and it ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/26B01J20/28B01J20/30B01D53/02
CPCB01D53/02B01D2257/708B01J20/12B01J20/16B01J20/20B01J20/262B01J20/28011B01J20/2804B01J20/3042
Inventor 付博刘菊张东辉周乔焦亮张涛易玉明何昌春戴荪朱新宝左宋林乔维川张磊李兴民
Owner NANJING FORESTRY UNIV
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