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Purification adsorbent based on mesoporous molecular sieve material and preparation method and application of purification adsorbent based on mesoporous molecular sieve material

A mesoporous molecular sieve and adsorbent technology, applied in the field of adsorbent and its preparation, can solve the problems of high regeneration temperature, unfavorable energy saving, hydrocarbon polymerization, etc., achieve low regeneration temperature, avoid the disadvantage of high temperature resistance, and low adsorption heat Effect

Inactive Publication Date: 2015-03-04
SHANGHAI LVQIANG NEW MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When microporous molecular sieves are used for adsorption and purification, the heat of adsorption is relatively large, which can easily cause hydrocarbon polymerization; during adsorption and regeneration, the regeneration temperature is also high, which is not conducive to energy saving

Method used

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  • Purification adsorbent based on mesoporous molecular sieve material and preparation method and application of purification adsorbent based on mesoporous molecular sieve material
  • Purification adsorbent based on mesoporous molecular sieve material and preparation method and application of purification adsorbent based on mesoporous molecular sieve material
  • Purification adsorbent based on mesoporous molecular sieve material and preparation method and application of purification adsorbent based on mesoporous molecular sieve material

Examples

Experimental program
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Effect test

Embodiment 1

[0036] The preparation process of spherical adsorbent containing MCM-41 mesoporous molecular sieve is as follows:

[0037] Using activated alumina or aluminum glue as a binder, mix 50kg (dry basis, the same below) of MCM-41 mesoporous molecular sieve with 45kg of activated alumina, roll into balls in a disc granulator, and use spraying Add sodium hydroxide solution (Na2O dry basis 5kg), shape it into 1-3mm particles and take it out, spray water vapor at 100°C to complete the hydration and aging process, the hydration time is 4 hours, then take it out and dry it at 150°C , and rapidly activated at 400 ° C to obtain a shaped solid adsorbent.

Embodiment 2

[0039] The preparation process of spherical adsorbent containing mesoporous SBA-15 molecular sieve is as follows:

[0040]Using activated alumina or aluminum glue as a binder, mix 35kg of mesoporous SBA-15 molecular sieves with 58kg of activated alumina, roll into balls in a disc granulator, and take them out after forming into 1-2mm particles. Under the condition of ℃, water vapor is sprayed to complete the hydration and aging process. The hydration time is 6 hours, and then it is taken out and dried at 150 ℃, and activated rapidly at 400 ℃ to obtain a molded product. Immerse the solid in 0.5mol / l ZnCl2 solution (dry basis 7kg), immerse at 70°C for 20 minutes, take it out, dry it and then immerse it for 20 minutes, take it out and dry it at 150°C, and dry it at 300°C Under the condition of ℃, it is rapidly activated to obtain the finished solid adsorbent.

Embodiment 3

[0042] The preparation process of the spherical adsorbent containing mesoporous X-type molecular sieve is as follows:

[0043] Using activated alumina or aluminum glue as a binder, mix 55kg of mesoporous X-type molecular sieve, 45kg of activated alumina and 5kg of magnesium carbonate (dry basis), and roll it into a disc granulator to shape it into 2-3mm The granules are taken out, and sprayed with water vapor at 70°C to complete the hydration and aging process. The hydration process lasts for 5 hours, and then taken out and dried at 150°C, and rapidly activated at 450°C to obtain a molded product.

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Abstract

The invention relates to a purification adsorbent based on a mesoporous molecular sieve material and a preparation method and application of the purification adsorbent based on the mesoporous molecular sieve material. The purification adsorbent based on the mesoporous molecular sieve material is characterized by comprising the following components in percentage by weight: 20%-60% of a mesoporous molecular sieve, 35%-75% of activated aluminum oxide and 3%-20% of metal components. The preparation method of the purification adsorbent based on the mesoporous molecular sieve material is characterized by comprising the following steps: firstly, mixing the mesoporous molecular sieve material, the activated aluminum oxide and the metal components, then carrying out extruding or disc granulation, and finally aging and activating so as to obtain an adsorbent product which is applicable to a temperature variation adsorption or pressure variation adsorption technology, and can work under a gas phase or liquid phase condition. Compared with the prior art, the prepared adsorbent containing the mesoporous molecular sieve has the advantages of being large in adsorption material duct, more beneficial to the adsorption of macromolecular impurities (such as disulphide), uniform in adsorption duct distribution, low in heat adsorption effect, and the like and has the deep adsorption function.

Description

technical field [0001] The invention relates to an adsorbent and its preparation method and application, in particular to a purification adsorbent based on mesoporous molecular sieve material and its preparation method and application. Background technique [0002] Ethylene, propylene, benzene, toluene, etc. are important basic raw materials of modern chemical industry. These raw materials mainly come from petrochemical industry. Chemical raw materials. In addition, some alkanes discarded by traditional processes are also cracked and used as industrial raw materials. [0003] These alkanes, olefins, benzene series and other raw materials contain different types and quantities of impurities due to different sources, and need to be further purified to meet the stringent requirements of the subsequent process or environmental protection requirements. For example, after methanol is produced through coal gasification, the ethylene, propylene or aromatics produced from methanol ...

Claims

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Application Information

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IPC IPC(8): B01J20/18B01J20/30B01D53/02B01D53/047B01D15/08
CPCB01J20/08B01D15/20B01D53/0462B01D53/047B01D2253/25B01D2257/702B01J20/0237B01J20/0244B01J20/04B01J20/16B01J20/28016
Inventor 周永贤王鹏飞何秋平李豫晨胡杰张佳李明霞朱琳
Owner SHANGHAI LVQIANG NEW MATERIALS CO LTD
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