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Gas separation adsorbent for pressure swing adsorption process and preparation method and application thereof

A pressure swing adsorption and gas separation technology, applied in separation methods, dispersed particle separation, chemical instruments and methods, etc., can solve the problems of large equipment investment and high operating costs, and achieve strong economic practicability, improved desorption rate, and high efficiency. Effects of Separation Features

Inactive Publication Date: 2011-01-19
孙玉坤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires a large investment in equipment and high operating costs, and it is more economical only for large-scale separations.
[0010] In order to apply high-performance adsorbents to various fields of industrialization more widely, and to play an effective role in industrial production practices, it must be solved. This long-standing technical problem, Chinese patent 86102838 provides a problem-solving adsorption agent, but since the research time of this patent is earlier, there is still room for improvement in terms of adsorption capacity

Method used

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  • Gas separation adsorbent for pressure swing adsorption process and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Weigh 11.7 grams of CuCl 2 , 28 grams of small-grained NaY powder, 10.5 grams of attapulgite, 13.5 grams of pseudo-boehmite, mixed with 25ml of hydrochloric acid solution with a mass concentration of 3%, kneaded and extruded, dried at 120°C for 6 Hours, according to the condition of 10℃ / min, the temperature is programmed to 450℃ for 2 hours, the adsorbent is recorded as J-1.

Embodiment 2

[0039] Weigh 44 grams of aluminum sol with 21% solid content, 1.5 grams of Yanggan clay, 93.8 grams of nano NaY powder, and CuCl 2 67 grams (analytical grade) mixed uniformly, grind and refine, add 96ml of 2% nitric acid solution, knead and extrude the bar, dry it at 110℃ for 10 hours, program it to 350℃ at 10℃ / min and roast 4 Hours, the adsorbent is recorded as J-2.

Embodiment 3

[0041] Weigh 220 grams of small-grained NaY powder and dissolve it in 0.1-0.2mol concentration of Cu(NO 3 ) 2 The exchange liquid is exchanged, filtered and washed 3-4 times at room temperature. The filter cake is dried at 120°C for 24 hours, programmed to heat up to 500°C at 10°C / min, and roasted for 1-2 hours for later use. Weigh 28.2 grams of the above roasted sample, mix with 20.3 grams of cuprous chloride (analytical purity), then mix with 0.56 grams of Yanggan clay with a solid content of 80% and 13.2 grams of pseudo-boehmite, and add 26ml of mass concentration to 2% hydrochloric acid solution, kneaded, extruded, and then dried at 120 ℃, calcined at 400 ℃ for 4 hours, denoted as J-3.

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Abstract

The invention relates to the fields of mixed gas separation and feed gas purification, and discloses a gas separation adsorbent for a pressure swing adsorption process. The adsorbent at least comprises an active ingredient, a carrier with high specific surface area for loading a copper compound, or a mixture of one of the active ingredient and the carrier and one of A type, X type, Y type, ZSM type, mordenite and aluminum phosphate molecular sieves, wherein the active ingredient is a cuprous compound or a divalent compound; the carrier with high specific surface area carrier is a small grain Y type or nano Y type molecular sieve; and the cuprous compound or the divalent compound accounts for 10 to 60 percent of the total weight of the adsorbent. In the invention, the small grain or nano carrier with high specific surface area is used to improve the distribution of a pore channel of the active ingredient, shorten the movement distance of an adsorbed molecule in the pore channel and increase the adsorption and desorption rate of the adsorbent, so that the adsorption depth is increased greatly, each gram of molecular sieve can adsorb 5.0mmol of molecules, and finally the aim of high-efficiency separation is fulfilled.

Description

technical field [0001] The invention relates to the field of separation of mixed gas and purification of raw material gas, in particular to an adsorbent, and also relates to the preparation method and application field of the adsorbent. Background technique [0002] At present, there are many industrial waste gases containing CO in industrialized countries in the world. How to recycle CO from the waste gas to reduce carbon emissions and achieve sustainable development has become a subject of great concern. [0003] 1. Separation and recovery of CO from industrial waste gas [0004] Steel plant coke oven gas contains hydrogen (H 2 ) 52%; contains carbon monoxide (CO) 10.4%,; direct discharge will cause environmental pollution, if it is separated and recycled, great economic benefits can be obtained, taking a synthetic ammonia plant as an example, if 1 million coke oven gas is consumed cubic meters per day, available hydrogen (H 2 ) 263 tons of synthetic ammonia (theoreti...

Claims

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Application Information

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IPC IPC(8): B01J20/06B01J20/08B01J20/16B01J20/30B01D53/047
Inventor 孙玉坤
Owner 孙玉坤
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