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Method for preparing organic solvent adsorbing material

A technology of adsorption materials and organic solvents, which is applied in the field of preparation of organic solvent adsorption materials, can solve the problems of no patents or public reports, and difficult removal of reactants, etc., to achieve thorough and uniform reaction, excellent organic solvent adsorption performance, and uniform silicon-aluminum ratio Effect

Active Publication Date: 2012-05-02
马军
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] NaCl (or NaAlCl) produced due to the reaction 4 ) will make the molecular sieves stick together, and the reactants are not easy to remove. Using Y-type molecular sieves and SiCl 4 It is necessary to develop special equipment or special process flow to avoid NaCl (or NaAlCl 4 ) will cause the molecular sieves to stick together and prevent the reaction from proceeding further, but there are no related patents or public reports at home and abroad

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  • Method for preparing organic solvent adsorbing material
  • Method for preparing organic solvent adsorbing material
  • Method for preparing organic solvent adsorbing material

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preparation example Construction

[0032] A kind of preparation method of organic solvent adsorption material of the present invention, comprises the following steps:

[0033] a) Using molecular sieves with a diameter of 1-3 microns as raw materials to manufacture molecular sieve paper; the diameter of molecular sieves is selected at 1-3 microns because at this scale, the prepared slurry is easy to form a suspension, which is convenient for manufacturing into molecular sieve paper .

[0034] b) The molecular sieve paper obtained in step a) is hot-pressed into a corrugated shape.

[0035] c) The corrugated molecular sieve paper obtained in step b) and the molecular sieve paper obtained in step a) are alternately stacked or rolled into a honeycomb body, and then baked.

[0036] d) Put the molecular sieve honeycomb body obtained in step c) into a closed container, and then pass nitrogen and SiCl at a temperature of 247°C-500°C into the container 4 The mixed gas of gas or water vapor at a temperature of 600°C-900...

Embodiment 1

[0043]a) Manufacture a Y-type zeolite molecular sieve with a diameter of 1 micron into molecular sieve paper by tape casting;

[0044] b), the Y-type zeolite molecular sieve paper obtained in step a) is hot-pressed into a corrugated shape;

[0045] c) The corrugated Y-type zeolite molecular sieve paper obtained in step b) and the Y-type zeolite molecular sieve paper obtained in step a) are alternately stacked or rolled into such a figure 1 , figure 2 The honeycomb body shown, and then baked;

[0046] d) Place the honeycomb body obtained in step c) into a closed container, and then pass nitrogen and SiCl at a temperature of 247°C into the container 4 Gas mixture, which will chemically react with the molecular sieve on the molecular sieve honeycomb;

[0047] e) After maintaining step d) for 4 hours, stop passing the reaction gas into the container, and pass nitrogen gas at a temperature of 80°C into the container to discharge the remaining reaction gas in the container;

[...

Embodiment 2

[0051] a) Manufacturing a BETA molecular sieve with a diameter of 3 microns into molecular sieve paper by coating method;

[0052] b), the molecular sieve paper obtained in step a) is hot-pressed into a corrugated shape;

[0053] c), the corrugated molecular sieve paper obtained in step b) and the molecular sieve paper obtained in step a) are alternately stacked or rolled into a shape such as figure 1 , figure 2 The honeycomb body shown, and then baked;

[0054] d) Put the honeycomb body obtained in step c) into a closed container, heat the honeycomb body to 600°C, and then pass water vapor at a temperature of 600°C into the container, which will combine with the molecular sieve on the molecular sieve honeycomb body A chemical reaction occurred;

[0055] e) After maintaining step d) for 6 hours, stop passing the reaction gas into the container, and pass nitrogen gas at a temperature of 100°C into the container to discharge the remaining reaction gas in the container, and t...

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Abstract

The invention discloses a method for preparing an organic solvent adsorbing material. The method comprises the following steps of: manufacturing molecular sieve paper; thermally pressing the molecular sieve paper into corrugated molecular sieve paper; preparing the molecular sieve paper into a honeycomb; performing a chemical reaction on the molecular sieve honeycomb and a mixed gas of nitrogen and SiCl4 gas or water vapor in an airtight container; exhausting residual reaction gas; repeatedly cleaning the molecular sieve honeycomb to remove a solid reaction product on the molecular sieve honeycomb and washing the molecular sieve honeycomb with acid; and continuing to perform a chemical reaction on the molecular sieve honeycomb and the mixed gas of nitrogen and SiCl4 gas or water vapor in the airtight container. The adsorbing material prepared by the method has a high and uniform ratio of silicate to aluminum, so the adsorbing material has excellent organic solvent adsorbing performance and can be widely used for adsorbing and separating an organic solvent from the air or adsorbing and separating the organic solvent in water which contains the organic solvent.

Description

technical field [0001] The invention relates to a preparation method of an organic solvent adsorption material, which is mainly used for absorbing and separating organic solvents from air, or for absorbing and separating organic solvents from water containing organic solvents. Background technique [0002] A large number of scientific research data and engineering application examples have proved that molecular sieves with a high silicon-aluminum ratio have good adsorption capacity for organic solvents. At present, people often use the gas phase method to dealuminate silicon to obtain molecular sieves with a high silicon-aluminum ratio, that is, to use conventional molecular sieves, such as Y-type molecular sieves, BETA molecular sieves, mordenite molecular sieves or ZSM-5, etc., at a temperature of 247°C-500°C. and silicon tetrachloride (SiCl 4 ) gas undergoes a chemical reaction. Domestic patent zl01115612.0 and application number 200610083440.3 are used to manufacture h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/16B01J20/30B01D53/04C02F1/28C02F1/58C02F101/30
Inventor 马军
Owner 马军
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