A modified zeolite and its composite adsorbent and its use

A technology of modified zeolite and composite adsorption, which is applied in the directions of crystalline aluminosilicate zeolite, A-type crystalline aluminosilicate zeolite, fauhhedral crystalline aluminosilicate zeolite, etc.

Inactive Publication Date: 2020-04-24
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no report on the application of modified 13X zeolite in adsorption heat pumps. The pore size of modified zeolite will change to a certain extent, which will have a certain impact on bound water. Therefore, it is necessary to study suitable modified 13X zeolite to effectively Applied in adsorption heat pump system

Method used

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  • A modified zeolite and its composite adsorbent and its use
  • A modified zeolite and its composite adsorbent and its use
  • A modified zeolite and its composite adsorbent and its use

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Embodiment Construction

[0093] In order to facilitate understanding of the present invention, the present invention enumerates the following examples. Those skilled in the art should understand that the examples are only used to help understand the present invention, and should not be regarded as specific limitations on the present invention.

[0094] 1 Preparation of experimental materials

[0095] 1.1 Humidification pretreatment of zeolite

[0096] In the preparation process of preparing silica gel-metal chloride composite adsorbent, the phenomenon of skeleton rupture will occur when silica gel particles are immersed in calcium chloride solution. Similarly, when zeolite, such as 13X type zeolite, is immersed in calcium chloride solution , there will also be a phenomenon of zeolite framework rupture, such as figure 1 As shown, the main reason for the cracking is that when the zeolite with low water content contacts with the calcium chloride solution, a large amount of heat of adsorption will be rele...

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Abstract

The invention relates to a preparation method of a modified zeolite absorbent. The preparation method comprises the following steps: (1) soaking humidified zeolite particles in a CaCl2 solution; (2) flushing zeolite which is subjected to ion exchange in the step (1), soaking the zeolite into water, and heating; (3) drying zeolite particles soaked in the step (2); and (4) heating the zeolite dried in the step (3) at a high temperature to remove internal bound water, so as to obtain the modified zeolite absorbent. A preparation method of a compound absorbent includes a step of increasing a step of soaking the zeolite after ion exchange into the CaCl2 solution again based on the preparation method of the modified zeolite absorbent. By applying the zeolite modified by virtue of a zeolite modifying method and the compound adsorbent to an experiment system for producing steam by virtue of an opening type absorbing pump, COP and SHP of the system can be increased.

Description

technical field [0001] The invention belongs to the technical field of adsorption heat exchange, and in particular relates to a modified zeolite and a composite adsorbent based on it and its application. Background technique [0002] Energy is the cornerstone of economic and social development. With the increasing global energy consumption, the shortage of fossil energy and global warming have become urgent problems to be solved in the development of modern society. Excessive consumption of fossil energy will not only pose a greater threat to global resource storage, but also cause serious environmental pollution, except for the global impact of CO 2 In addition to emissions, regional pollutants such as sulfur, nitrogen oxides, and solid particles produced during the consumption of fossil energy will cause serious harm to the local ecological environment. With the increasing emphasis on energy conservation, emission reduction and environmental protection, efficient recyclin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/18C01B39/22C01B39/14C01B39/00F25B30/04B01J20/30
CPCB01J20/041B01J20/186C01B39/00C01B39/14C01B39/22F25B30/04Y02P20/129
Inventor 薛冰盛遵荣刘周明叶松杨绪升魏新利
Owner ZHENGZHOU UNIV
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