Regeneration of desulfurizing adsorbent

A kind of adsorbent and specific technology, which is applied in the field of regeneration of desulfurization adsorbent by microorganisms, which can solve the problems of oil combustion value loss, large solvent consumption, incomplete desulfurization, etc., and achieve the effect of low energy consumption and convenient method

Inactive Publication Date: 2006-05-31
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the inability to completely desulfurize when using high-temperature roasting regenerated desulfurization adsorbent in the prior art, which will cause the loss of oil combustion value, and the use of solvent extraction needs to consume a large amount of solvent, and cannot completely desulfurize, and the solvent needs to be regenerated. To deal with the defects, so as to provide a regeneration method of desulfurization adsorbent which is convenient, high in desulfurization efficiency, and will not affect the properties of the adsorbent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1. Using Pseudomonas delbrueckii R-8 with the preservation number CGMCC 0570 to regenerate the NiO / USY adsorbent

[0022] 1) Cultivate the logarithmic growth phase cells of Pseudomonas delbrueckii R-8 with the preservation number CGMCC 0570

[0023] Pick the Pseudomonas delbrueckii R-8 strain cultured on the vegetative slant, add it to a medium with a volume of 25 ml, and cultivate it for 2 days at 30°C and 170r / min, and then culture the Pseudomonas delbrueckii Inoculate the R-8 strain of Pseudomonas delbrueckii into a 500ml Erlenmeyer flask containing 150ml of the above-mentioned medium, culture it on a shaker until the logarithmic growth phase, and centrifuge at 5000rpm for 6min to obtain Pseudomonas delbrueckii R-8 cells; wash it with physiological saline 2 to 3 times, the obtained Pseudomonas delbrueckii R-8 cells were suspended in normal saline, and placed in a refrigerator at 4°C;

[0024] The composition of the medium is as follows: KH 2 PO 4 2.44g, N...

Embodiment 2

[0031] Example 2. Using Pseudomonas delbrueckii R-8 with the preservation number CGMCC 0570 to regenerate the cross-linked polyvinylpyrrolidone microsphere adsorbent

[0032] 1) Cultivate the logarithmic growth phase cells of Pseudomonas delbrueckii R-8 with the preservation number CGMCC 0570

[0033] Method is the same as step 1) in the embodiment.

[0034] 2) Preparation of cross-linked polyvinylpyrrolidone microsphere adsorbent and investigation of its adsorption performance

[0035] The cross-linked polyvinylpyrrolidone adsorption carrier was prepared by reverse-phase polymerization, and the oil phase was mixed with 25ml of n-octane and 0.5ml of Span80 and stirred evenly. Measure 8.00ml of N-vinylpyrrolidone, 1.20g of N,N-methylenebisacrylamide, 6.00ml of deionized water, and 0.08g of azobisisobutyronitrile for the aqueous phase, and mix them uniformly by ultrasonication for 5 minutes. Pour the oil phase into a 250ml four-necked flask placed in a water-bath constant temp...

Embodiment 3

[0041] Embodiment 3, using immobilized microbial cell regeneration polymer microsphere adsorbent

[0042] 1) Preparation of immobilized microbial cells of Pseudomonas delbrueckii R-8 with the preservation number CGMCC 0570

[0043] Weigh a certain amount of sodium alginate and dissolve it in deionized water to obtain a sodium alginate aqueous solution with a concentration of 4wt%. Liquid, squeeze 0.1mol / L CaCl with a syringe 2 The aqueous solution obtains calcium alginate immobilized cell spherical hydrogel with a diameter of 1-2 mm. Cross-link with 2.8% glutaraldehyde physiological saline solution to obtain immobilized cell microbial catalyst.

[0044] 2) Investigation of Adsorption Performance of Polyvinylpyrrolidone Polymer Microsphere Adsorbent

[0045] Polyvinylpyrrolidone polymer microspheres are used as adsorbent to adsorb sulfide in hydrogenated diesel oil. 3.0 grams of polymer microsphere adsorbent, adsorbing sulfur compounds in hydrodesulfurized diesel. The tota...

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Abstract

A process for regenerating the desulfurizing adsorbent includes such steps as adding the used desulfurizing adsorbent into the mixture of oil phase and water phase proportionally, reaction, filtering, drying and calcining. Said water phase contains physiologic saline, phosphoric acid buffering solution or the culture medium, and the microbes used as the desulfurizing biocatalyst chosen from Bacillus brevis, pseudomonos delafildii, coccoid Noardia, etc. Its advantage is high effect.

Description

technical field [0001] The invention belongs to the field of biotechnology, in particular to a method for regenerating a desulfurization adsorbent by using microorganisms. Background technique [0002] The use of desulfurization adsorbents to carry out catalytic adsorption desulfurization of oil products is to use adsorbents to adsorb sulfur-containing compounds in diesel and gasoline under normal temperature and pressure to achieve the purpose of deep desulfurization. Because catalytic adsorption desulfurization hardly affects the octane number and yield of gasoline and can realize ultra-low sulfur production of oil products, it has attracted great attention at home and abroad. The adsorbent used for adsorptive desulfurization can be metal oxide (USP 6,184,176,2001-2-6; USP 6,338,794,2002-2-15), molecular sieve (USP 5,935,422,1999-8-10; USP 5454933,1995-10- 3), activated carbon (USP 6,565,741, 2003-5-20) and metal alloy (USP 6,558,533, 2003-5-6). Loading alkali metals or ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/34
Inventor 刘会洲李望良邢建民熊小超单国彬
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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