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Calcium chloride-active carbon mixed adsorbent

An adsorbent, calcium chloride technology, applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of large contact thermal resistance, unfavorable adsorption bed heat transfer, etc., to increase packing density, improve gas permeability, The effect of improving heat transfer performance

Inactive Publication Date: 2005-01-26
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

The mixture of activated carbon fiber and chemical adsorbent can effectively solve the phenomenon of expansion and agglomeration of chemical adsorbent, but the contact thermal resistance between activated carbon fiber and the adsorption bed is large in specific applications, which is not conducive to the heat transfer of the adsorption bed

Method used

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Examples

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Embodiment Construction

[0016] Provide specific embodiments in conjunction with the content of the material of the present invention:

[0017] For adsorption air conditioning conditions, examples of bulk mixed adsorbents are as follows:

[0018] (1) Calcium chloride 70%, activated carbon 30%, the two are directly mixed and then dried. For pure calcium chloride, due to the phenomenon of expansion and agglomeration in the adsorption process, the necessary expansion space must be left. It has been verified by experiments that the maximum volume filling of calcium chloride is only 41.6% in the air-conditioning working condition. Using the above mixed adsorbent formula, since the activated carbon can improve the mass transfer of the adsorbent, the volume filling capacity of calcium chloride can be increased by 29%, and the corresponding volume cooling capacity will also be increased by 29%.

[0019] (2) Calcium chloride 78%, activated carbon 22%, the activated carbon is impregnated in the aqueous soluti...

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Abstract

The invention is a calcium chloride-active carbon compound sorbent. The sorbent can be divided into bulk and solid. The component and weight percentage of the sorbent with bulk type is: calcium chloride 60%-78%, active carbon 22%-40, the solid sorbent: calcium chloride 49%-60.2%, active carbon 17.2-32.7%, water 12.2%-15.1%, cement 6.1%-7.5%. The invention uses active carbon as base material, it upgrades the gas penetration performance and its volume filling quantity greatly. At the same time, because the filling density is large, it improves the heat conducting performance of the sorbent.

Description

technical field [0001] The invention relates to an adsorbent used in an adsorption refrigeration / heat pump system, in particular to a calcium chloride-activated carbon mixed adsorbent. Used in the field of adsorption refrigeration. Background technique [0002] As a green refrigeration technology driven by renewable energy or low-grade waste heat, adsorption refrigeration / heat pump technology has attracted more and more attention. The adsorbents currently used in adsorption refrigeration / heat pump systems mainly include physical adsorbents, chemical adsorbents, and physical-chemical mixed adsorbents. Compared with physical adsorbents, chemical adsorbents have the advantages of large adsorption and desorption capacity, high cooling and heating power, etc., but also have disadvantages such as poor heat transfer, poor gas permeability, and serious expansion. In order to solve the problem of chemical adsorbents Due to these shortcomings, the research on mixed adsorbents has be...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/32
Inventor 王丽伟王如竹吴静怡王凯
Owner SHANGHAI JIAO TONG UNIV
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