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Desulfurization adsorbent as well as preparation method and application thereof

An adsorbent and gravimetric technology, applied in chemical instruments and methods, adsorption purification/separation, other chemical processes, etc., can solve the problems of high price, loss, high cost, etc., to improve desulfurization adsorption capacity, increase adsorption capacity, disperse high degree of effect

Active Publication Date: 2022-05-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the adsorbent uses the Pd-M bimetallic system, it is inevitable to use expensive palladium as the active component. The cost of the adsorbent is still high, and once it is deactivated, it will cause great losses.
CN104941570A discloses a ruthenium-containing benzene deep desulfurization adsorbent, which greatly reduces the cost of the adsorbent and has a good desulfurization effect, but the dispersion of ruthenium metal particles in this method is poor, and the content of ruthenium metal used is above 0.8% by weight. relatively high cost

Method used

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  • Desulfurization adsorbent as well as preparation method and application thereof
  • Desulfurization adsorbent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Take 99 grams of 13X molecular sieve powder, impregnate 1 g of ruthenium with an equal volume of ruthenium trichloride aqueous solution at room temperature, dry at 120°C for 12 hours, and then roast at 550°C for 5 hours to obtain ruthenium-loaded 13X molecular sieve . (2) 80 grams of the above molecular sieves, 40 grams of ammonium chloride, added to 800 grams of deionized water, treated at 40 ° C for 2 hours, then washed with deionized water, repeated this step four times, and finally dried at 120 ° C 12 hours, and then calcined at 550° C. for 5 hours to obtain an acidic 13X molecular sieve loaded with ruthenium. (3) Take 60 grams of acidic 13X molecular sieves loaded with ruthenium, compound it with 40 grams of alumina, knead, shape into strips, dry at 120 ° C for 12 hours, then roast at 550 ° C for 5 hours, and finally 300℃, hydrogen volume space velocity is 30h -1 , reduced for 4 hours, recorded as adsorbent A, in which, the acid content of 13X molecular sieve i...

Embodiment 2

[0041] (1) Take 98.4 grams of 13X molecular sieve powder, impregnate 0.60 g of ruthenium with an equal volume of ruthenium trichloride aqueous solution at room temperature, dry at 120°C for 12 hours, and then roast at 550°C for 5 hours to obtain ruthenium-loaded 13X Molecular sieve. (2) 80 grams of the above molecular sieves, 40 grams of ammonium chloride, added to 800 grams of deionized water, treated at 40 ° C for 2 hours, then washed with deionized water, repeated this step four times, and finally dried at 120 ° C 12 hours, and then calcined at 550° C. for 5 hours to obtain an acidic 13X molecular sieve loaded with ruthenium. (3) Take 70 grams of acidic 13X molecular sieves loaded with ruthenium, compound it with 30 grams of alumina, knead, shape into strips, dry at 120 ° C for 12 hours, then roast at 550 ° C for 5 hours, and finally 300℃, hydrogen volume space velocity is 30h -1 , reduced for 4 hours, recorded as adsorbent B. Among them, the acid content of 13X molecula...

Embodiment 3

[0044] (1) Take 98.4 grams of 13X molecular sieve powder, impregnate 0.60 g of ruthenium with an equal volume of ruthenium trichloride aqueous solution at room temperature, dry at 120°C for 12 hours, and then roast at 550°C for 5 hours to obtain ruthenium-loaded 13X Molecular sieve. (2) 80 grams of the above molecular sieves, 40 grams of ammonium chloride, added to 800 grams of deionized water, treated at 40 ° C for 2 hours, then washed with deionized water, repeated this step four times, and finally dried at 120 ° C 12 hours, and then calcined at 550° C. for 5 hours to obtain an acidic 13X molecular sieve loaded with ruthenium. (3) Take 80 grams of acidic 13X molecular sieves loaded with ruthenium, compound it with 20 grams of alumina, knead, shape into strips, dry at 120 ° C for 12 hours, then roast at 550 ° C for 5 hours, and finally 300℃, hydrogen volume space velocity is 30h -1 , reduced for 4 hours, recorded as adsorbent C. Among them, the acid content of 13X molecula...

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Abstract

The invention relates to a desulfurization adsorbent as well as a preparation method and application thereof. The desulfurization adsorbent comprises a 13X molecular sieve, aluminum oxide and ruthenium oxide, and on the basis of the weight of the desulfurization adsorbent, the ruthenium oxide accounts for 0.3-0.6 wt% in terms of ruthenium; the total acid content of the 13X molecular sieve is 150-350 [mu] mol / g. The benzene desulfurization adsorbent provided by the invention has the advantages of high sulfur capacity, good deep desulfurization effect and high dispersion degree of ruthenium, a very good desulfurization effect can be achieved by only needing lower content of ruthenium, and the overall preparation method is simple and low in cost.

Description

technical field [0001] The invention relates to a desulfurization adsorbent and its preparation method and application, in particular to a benzene desulfurization adsorbent and its preparation method and application. Background technique [0002] Benzene is an important chemical raw material with a wide range of industrial uses, the main use of which is the production of ethylbenzene, cumene, cyclohexane, etc. While the demand for benzene in various countries is increasing, the quality requirements are becoming increasingly stringent. Although the sulfur content in refined benzene is currently below ppm, it is still a poison for benzene hydrogenation catalysts. Conventional hydrodesulfurization or adsorption desulfurization can no longer meet the requirements of deep desulfurization of benzene. However, hydrogenation catalysts often use precious metals such as Pt and Pd as active components, which will be deactivated by a small amount of sulfur, causing unnecessary economic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/08B01J20/06B01J20/30B01J20/32C07C7/13C07C15/04
CPCB01J20/08B01J20/06B01J20/3078B01J20/3204C07C7/13C07C15/04Y02A50/20
Inventor 王闻年胥明顾瑞芳魏一伦高焕新
Owner CHINA PETROLEUM & CHEM CORP
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