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Preparation method of light honeycomb molecular sieve purification module

A purification module, molecular sieve technology, applied in chemical instruments and methods, inorganic chemistry, silicon compounds, etc., can solve the problems of low adsorption capacity, high bulk density, high price, etc., to increase specific surface area, reduce overall density, and improve effective The effect of adsorption capacity

Active Publication Date: 2021-05-07
GANNAN NORMAL UNIV +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

But at the same time, there are also shortcomings. Compared with the honeycomb activated carbon of the same volume, there are problems of low adsorption capacity, high bulk density and high price, which have a great impact on the replacement of honeycomb activated carbon by honeycomb molecular sieve in environmental protection projects.

Method used

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  • Preparation method of light honeycomb molecular sieve purification module
  • Preparation method of light honeycomb molecular sieve purification module
  • Preparation method of light honeycomb molecular sieve purification module

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preparation example Construction

[0027] Please refer to figure 1 , The preparation method of the lightweight honeycomb molecular sieve purification module of the embodiment of the present invention includes a sample initial mixing step, a sample slime step, an extrusion molding step, a low-temperature drying step, a low-temperature foaming step, and a calcination step.

[0028] Sample initial mixing step: Weigh each raw material according to the following weight percentage: 60%-80% of molecular sieve powder, 25%-15% of binder, 10%-3% of surfactant, and 5%-2% of foaming agent; Put the weighed molecular sieve raw powder, binder, and foaming agent into a mixer for stirring and mixing until uniform, wherein the binder is clay. The present invention uses natural zeolite or artificially synthesized molecular sieve raw powder. Since the molecular sieve raw powder is in the form of powder, its direct application is greatly limited. Especially in the field of environmental protection, the filling resistance of powdery...

Embodiment 1

[0045](1) Sample initial mixing step: use 40kg of molecular sieve raw materials, 5.0kg of calcined kaolin powder of 1250 mesh, 0.5kg of sodium carboxymethyl cellulose, and 1.0kg of foaming agent into a mixer for stirring and mixing until uniform, time For 20 minutes, the temperature was controlled at 30°C.

[0046] (2) Sample mud refining step: add 30.0kg water and 0.6kg glycerin and polyethylene glycol, 0.2kg silica sol solution to the above (1), the rate of adding solution is 5 kg / min, continue to stir and knead The temperature is controlled at 35°C, and the stirring speed is 50r / min. Put the muddy billet after mixing evenly into the mud mixer for repeated mixing and extrusion, and the temperature of the mud is controlled Rough refining is repeated 5 times, vacuuming, and the vacuum degree is

[0047] (3) Extrusion molding step: Put the refined mud into a low-pressure vacuum extruder for molding and extrusion. During extrusion, the temperature is controlled at 30°C, th...

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Abstract

The embodiment of the invention discloses a preparation method of a light honeycomb molecular sieve purification module. The preparation method comprises the following steps: a sample primary mixing step: putting weighed molecular sieve raw powder, a binder and a foaming agent into a mixer, and stirring and mixing until the materials are uniform; a sample pugging step: adding the weighed surfactant, continuously stirring, and putting the muddy blank into a pugging mill for extrusion; an extrusion molding step: putting the smelted pug into a low-pressure vacuum extruder for molding and extrusion; a low-temperature drying step: placing the wet green body in a low-temperature dry environment; a low-temperature foaming step: performing low-temperature foaming on the wet green body; calcining, namely calcining the blank at high temperature to obtain the light honeycomb molecular sieve. By manually controlling foaming and pore-forming, more hollow structures are obtained, so that the overall density of the honeycomb molecular sieve is reduced, the specific surface area of the honeycomb molecular sieve module is increased, contact adsorption of waste gas components and the honeycomb molecular sieve is more facilitated, and the unit effective adsorption capacity is improved.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a preparation method of a lightweight honeycomb molecular sieve purification module. Background technique [0002] Molecular sieves have been widely used in the fields of catalysis and adsorption due to their thermal stability, acid resistance, and excellent selectivity. However, traditional molecular sieves are mainly in powder or granular form, which greatly limits their application fields and scope. Especially in the field of environmental protection, granular molecular sieves have high loading resistance, which restricts the application of materials engineering. [0003] Honeycomb material is a breakthrough in the application of molecular sieves in the field of environmental protection. Honeycomb structure materials have good permeability, low resistance, easy filling, and good mechanical strength. But at the same time, there are also shortcomings. Compared ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/16B01J20/28B01J20/30
CPCB01J20/16B01J20/28057B01J20/2803B01J20/28045
Inventor 马飞谢璀
Owner GANNAN NORMAL UNIV
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