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Composite cross-linking pole support bentonite intercalation desulfurizer and preparation method thereof

A technology of bentonite and composite cross-linking, applied in chemical instruments and methods, refined hydrocarbon oil, and other chemical processes, can solve problems such as thermal sintering at regeneration temperature, formation of zinc sulfate, reduction of zinc oxide, etc., and achieve high desulfurization accuracy.

Inactive Publication Date: 2008-03-26
HARBIN ENG UNIV
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Problems solved by technology

Obviously, zinc oxide has unique thermodynamic advantages, but in the desulfurization stage, when the temperature of zinc oxide is higher than 600 °C, the zinc oxide will be reduced due to the volatilization of elemental zinc, and the regeneration temperature is too high or too low, respectively, resulting in thermal sintering or the formation of sulfuric acid Zinc and other issues

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  • Composite cross-linking pole support bentonite intercalation desulfurizer and preparation method thereof
  • Composite cross-linking pole support bentonite intercalation desulfurizer and preparation method thereof

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Embodiment Construction

[0022] The following examples describe the present invention in more detail:

[0023]In conjunction with Fig. 4, the specific preparation method of the present invention is: use sodium pyrophosphate as a sodium modification agent, prepare a sodium conversion agent-ethanol-water solution with a mass percentage of 3% of the original soil quality, and weigh a certain amount of bentonite concentrate , to make the suspension concentration 15%, then drop the prepared solution into the bentonite fine earth suspension, stir evenly, heat to 60°C, react for 12h, after the reaction, let stand for half an hour, rinse with tap water first, Rinse again with distilled water to separate unreacted salts (using AgNO 3 Check whether the chloride ions are removed completely), the filter cake is directly put into the drying oven for drying, and the sodium bentonite is obtained after grinding.

[0024] Take sodium bentonite and prepare 100mL of slurry with a concentration of 0.01g / L under vigorous...

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Abstract

The present invention provides one kind of composite cross-linked organic pillared interlayer bentonite desulfurizer and its preparation process. The preparation process includes the following steps: compounding sodium bentonite slurry, adding ZnCl2 solution, ion exchanging for 12 hr and regulating pH to 6.0; dropping the mixed slurry into Keggin solution to prepare organic pillared bentonite; dropping organic intercalating agent in the amount of 0.6 CEC sodium bentonite into the composite cross-linked pillared bentonite suspension at 75 deg.c, stirring for 2 hr, centrifugally cleaning, drying at room temperature, grinding to 200 mesh to obtain organic-inorganic composite cross-linked pillared interlayer bentonite; heating the mixed solution of Zn(NO3)2, Cu(NO3)2 and Mn(NO3)2 in a water bath, adding the modified bentonite and magnetite and dropping Na2CO3 precipitant; cooling to room temperature, vacuum suction filtering, stoving and grinding to obtain the desulfurizer.

Description

(1) Technical field [0001] The present invention relates to a desulfurizing agent, and also relates to a preparation method of the desulfurizing agent. (2) Background technology [0002] At present, the development trend of foreign zinc oxide desulfurizers is to develop towards low density, low temperature or normal temperature, high strength and the characteristics of converting organic sulfur. Although there are many types of domestic desulfurizers, there are few desulfurizers with large working sulfur capacity, high desulfurization precision, capable of removing both organic and inorganic sulfur, and low prices. "Acta Inorganic Chemistry", 2005, 21 (8) published in "Nano ZnO desulfurizer surface structure and room temperature removal of H 2 The technical scheme recorded in "Research on S Performance" can only remove H 2 S. "Petrochemical Technology and Application", 2002, 20(5) The technical scheme recorded in "Research and development of new high-efficiency hydrocarbo...

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Application Information

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IPC IPC(8): C10G25/02B01J20/02
Inventor 景晓燕陈野郭慧明张密林
Owner HARBIN ENG UNIV
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