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Calcium chloride-active carbon fibrofelt solid composite adsorbent and preparation method thereof

An activated carbon fiber felt and composite adsorption technology, applied in chemical instruments and methods, and other chemical processes, can solve problems such as fragmentation, weak heat and mass transfer capabilities, and low proportion of impregnated salts, so as to improve the adsorption rate and avoid liquid problem solving, strong capillary force effect

Inactive Publication Date: 2015-07-15
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, silica gel has several disadvantages as a matrix: the proportion of impregnating salt is not high, the problem of liquid solution, the heat and mass transfer ability is weak in the accumulation state, and the impregnation process is severely fragmented.

Method used

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  • Calcium chloride-active carbon fibrofelt solid composite adsorbent and preparation method thereof

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preparation example Construction

[0022] The invention provides a composite adsorbent based on a new material activated carbon fiber mat and a preparation method, which can have the advantages of high salt leaching rate, strong heat and mass transfer, and no liquid solution, and provide high-quality composite adsorbent for the air water intake system. Adsorbent for efficient adsorption and desorption.

[0023] Herein, a range indicated by "one value to another value" is a general representation which avoids enumerating all values ​​in the range in the specification. Therefore, the description of a specific numerical range covers any numerical value in the numerical range and the smaller numerical range bounded by any numerical value in the numerical range, as if the arbitrary numerical value and the smaller numerical value are expressly written in the specification. same range.

Embodiment

[0026] 1. Preparation of calcium chloride-activated carbon fiber mat solid composite adsorbent

[0027] The specific surface area of ​​activated carbon fiber felt used as raw material is 1380m 2 / g.

[0028] The preparation of calcium chloride-activated carbon fiber felt solid composite adsorbent is prepared by adjusting the appropriate calcium chloride salt concentration of 16.6%, 23%, 28.5%, and 33.3%, and adjusting the different suspension heights of activated carbon fiber felt (2cm-8cm). Find the most suitable composite adsorbent. The best concentration selection of calcium chloride salt through screening is 28.5%, and under this concentration, calcium chloride salt increment is maximum, is 0.862, and all can realize this when the concentration of calcium chloride salt is 28.5% ± 10%. The purpose of the invention; the suspended height of the activated carbon fiber felt is uniformly adopted at 6cm, because the capillary force can just in time make the activated carbon fib...

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Abstract

The invention discloses a calcium chloride-active carbon fibrofelt solid composite adsorbent and a preparation method thereof. The calcium chloride-active carbon fibrofelt solid composite adsorbent is composed of calcium chloride and active carbon fibrofelt, wherein the fiber surface of the active carbon fibrofelt is uniformly covered with calcium chloride. The calcium chloride-active carbon fibrofelt solid composite adsorbent is prepared by using a hanging adsorption method which allows a calcium chloride solution to be uniformly distributed on the fine fiber of the active carbon fibrofelt. The calcium chloride-active carbon fibrofelt solid composite adsorbent prepared in the invention has better adsorptivity and stronger heat and mass transfer capability compared with a traditional silica gel-based composite adsorbent and is a composite adsorbent with the advantages of exemption from lyolysis and damage and a low price.

Description

technical field [0001] The invention relates to an adsorbent in the technical field of composite materials and a preparation method thereof, in particular to a calcium chloride-activated carbon fiber felt solid composite adsorbent and a preparation method thereof. Background technique [0002] As an important means of absorbing water in the form of hydrate, calcium chloride has become a more important method in the field of air water intake due to its advantages of non-toxicity and harmlessness, large water absorption, easy regeneration, low price and stable performance during the water absorption process. An inorganic salt. The composite adsorbent with silica gel as the substrate and calcium chloride as the carrier was once a research hotspot in the field of air water intake due to its excellent adsorption performance, such as Yu.I.Aristov, in Sorption properties Reaction Kinetics and Catalysis Letters (1996, 59( 2): 325-333) on "Selective Water Sorbents for Multiple Appli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30
Inventor 王如竹王佳韵王丽伟
Owner SHANGHAI JIAO TONG UNIV
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