Adsorbent and preparation method thereof

A technology of adsorbent and physical adsorbent, which is applied in the preparation of adsorbent and the field of adsorbent for small molecule gas adsorption, can solve the problems of poor economy and compatibility, and poor treatment effect of small molecule organic matter, so as to improve the treatment effect, Suitable for large-scale industrial promotion and application, good technical compatibility

Inactive Publication Date: 2019-03-19
QINGDAO HSJ ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a kind of adsorbent with good adsorption effect on methanol, ethanol and other small molecule organic matter, simple in structure and easy to produce and its preparation method, which solves the problem of poor treatment effect on the above-mentioned small molecule organic matter and economical problem in the prior art. Sexuality and poor compatibility

Method used

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  • Adsorbent and preparation method thereof

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Effect test

Embodiment 1

[0032] an adsorbent such as figure 1 As shown, NaY molecular sieve and calcium chloride comprising a silicon-aluminum ratio (molar ratio) of 6:1, the NaY molecular sieve is a physical adsorbent 2, and the calcium chloride is a chemical adsorbent 1, and calcium chloride is attached to NaY On the molecular sieve, that is, the chemical adsorbent 1 is attached to the physical adsorbent 2, which may be attached to the inner surface and / or the outer surface of the physical adsorbent 2.

[0033] The weight ratio of the NaY molecular sieve is about 85%, and the weight ratio of calcium chloride is about 15%.

[0034] This embodiment also provides a preparation method for the above-mentioned adsorbent, comprising the following steps:

[0035] (1) placing the NaY molecular sieve having a particle diameter between about 100nm-10 μm in a calcium chloride solution and stirring to obtain a mixture after filtering, wherein the weight of calcium chloride accounts for 15% of the total weight o...

Embodiment 2

[0041] An adsorbent comprises NaY molecular sieve with a silicon-aluminum ratio (molar ratio) of 6:1 and calcium chloride, and the calcium chloride is attached to the NaY molecular sieve.

[0042] The weight ratio of the NaY molecular sieve is about 80%, and the weight ratio of calcium chloride is about 20%.

[0043] This embodiment also provides a preparation method for the above-mentioned adsorbent, comprising the following steps:

[0044] (1) placing the NaY molecular sieve with a particle diameter between about 100nm-10 μm in a calcium chloride solution and stirring to obtain a mixture after filtering, wherein the weight of calcium chloride accounts for 20% of the total weight of the mixture;

[0045] (2) adding a small amount of silica sol binder in the mixture, forming spherical particles with a diameter of about 4mm by granulation;

[0046] (3) performing infrared drying on the spherical particles at 105°C;

[0047] (4) After the dried spherical particles are removed ...

Embodiment 3

[0050] An adsorbent comprising silica gel and magnesium chloride attached to the silica gel.

[0051] The weight ratio of the silica gel is about 70%, and the weight ratio of the magnesium chloride is about 30%.

[0052] This embodiment also provides a preparation method for the above-mentioned adsorbent, comprising the following steps:

[0053] (1) mixing silica gel particles with a particle diameter between about 100nm-10 μm and magnesium chloride particles, wherein the weight of magnesium chloride accounts for 20% of the total weight of the mixture;

[0054] (2) extruding the mixture;

[0055](3) hot air drying the molding at 150°C;

[0056] (4) After the dried molded product is removed at about 400° C. to obtain a composite adsorbent.

[0057] Use the above-mentioned adsorbent as the filling layer, with a height of 15cm, and a blowing concentration of 200mg / m at a wind speed of 2m / s 3 Ethanol, temperature 25°C, humidity 60%RH, the concentration of ethanol at the outlet...

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Abstract

The invention relates to an adsorbent and a preparation method thereof and in particular relates to an adsorbent for adsorbing small molecular gas and a preparation method thereof. The adsorbent comprises a physical adsorbent and chemical adsorbents, wherein the chemical adsorbent is attached on the physical adsorbent. The adsorbent takes the conventional physical adsorbent for treating organic waste gas as a carrier, and the chemical adsorbents including magnesium chloride, calcium chloride, copper sulfate and the like are attached on the physical adsorbent; a working principle is similar with that of the conventional physical adsorbent; the adsorbent has good technology compatibility and an efficient adsorption capability on low-carbon-number small molecules including methanol, ethanol and the like, so that the treatment effect on the organic waste gas is greatly improved; and the preparation method of the adsorbent is simple and economical and is suitable for large-scale industrialpopularization and application.

Description

technical field [0001] The invention relates to an adsorbent, in particular to an adsorbent used for the adsorption of small molecular gas. [0002] The invention also relates to a method for preparing an adsorbent, in particular to a method for preparing an adsorbent used for the adsorption of small molecule gases. Background technique [0003] Adsorption purification technology is a traditional VOCs treatment method, which has the advantages of low energy consumption, mature process, high removal rate, thorough purification, and easy promotion, and has good environmental and economic benefits. The disadvantage is that the equipment is huge, the process is complicated, the adsorbent needs to be regenerated, and the adsorbent is easily poisoned. In recent years, due to the increasingly stringent environmental protection requirements, adsorption technology has developed rapidly, and new adsorption processes and equipment have emerged; at the same time, the improvement of ads...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/10B01J20/20B01J20/34B01J20/30B01D53/81B01D53/72
CPCB01D53/72B01D53/81B01J20/0237B01J20/0281B01J20/041B01J20/046B01J20/08B01J20/103B01J20/20B01J20/3466
Inventor 刘冰王淦王振青王利杰盛日然李文斐
Owner QINGDAO HSJ ENVIRONMENTAL PROTECTION TECH CO LTD
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