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Zinc oxide desulfurizer and preparation method thereof

A technology of desulfurization agent and zinc oxide, which is applied in the field of desulfurization purification and desulfurization agent, can solve the problems of long duration, slow reaction, large reaction resistance, etc., and achieve the effect of increasing sulfur capacity, improving desulfurization precision, and cheap raw materials

Inactive Publication Date: 2010-08-11
长春惠工净化工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reaction resistance of the inner layer is large, the reaction is slow, but the duration is long, and the desulfurization reaction is mainly carried out in the inner layer

Method used

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Examples

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preparation example Construction

[0037] The preparation method of zinc oxide desulfurizer comprises the following sequence and steps:

[0038] a. Dissolve NaOH with 11.5%-13% deionized water to make NaOH aqueous solution;

[0039] b. Dissolve AlCl·6H with 11.5%-13% deionized water 2 O, make aluminum salt solution;

[0040] c. Under stirring, add the NaOH aqueous solution dropwise to the aluminum salt aqueous solution to make aluminum sol;

[0041] d. Add sodium-based bentonite to the aluminum sol, stir and beat to make a cross-linked bentonite slurry;

[0042] e. Methyl cellulose, aluminate cement, ZnO, ZnCO 3 、TiO 2 , NiO is added to the cross-linked bentonite slurry, mixed and rolled, and extruded into strips;

[0043] f. Dry at 80°C-120°C for 3h-5h; then roast at 350°C-400°C for 4h-5h to make a desulfurizer.

Embodiment 1

[0045] Take 225g of deionized water and dissolve 16g of NaOH to make NaOH aqueous solution. Take 225g of deionized water and dissolve 50g of AlCl 3 .6H 2 O, to make aluminum salt solution. Under stirring, NaOH aqueous solution was added dropwise to aluminum salt aqueous solution to make aluminum sol. Add 100g of sodium-based bentonite to the aluminum sol, stir and beat to make a cross-linked bentonite slurry. Add 30g methylcellulose, 100g aluminate cement, 400gZnO, 500gZnCO to the crosslinked bentonite slurry in turn 3 , 50gTiO 2 , 50g NiO, mixed and rolled, extruded into strips, dried at 80°C for 5 hours, and roasted at 350°C for 5 hours to make zinc oxide desulfurizer A. The main physical and chemical properties are shown in Table 1.

Embodiment 2

[0047] Take 225g of deionized water and dissolve 16g of NaOH to make NaOH aqueous solution. Take 225g of deionized water and dissolve 50g of AlCl 3 .6H 2 O, to make aluminum salt solution. Under stirring, NaOH aqueous solution was added dropwise to aluminum salt aqueous solution to make aluminum sol. Add 100g of sodium-based bentonite to the aluminum sol, stir and beat to make a cross-linked bentonite slurry. Add 30g methylcellulose, 100g aluminate cement, 350gZnO, 500gZnCO to the crosslinked bentonite slurry in turn 3 , 100gTiO 2 , 50g NiO, mixed and rolled, extruded, dried at 80°C for 5 hours, and roasted at 350°C for 5 hours to make zinc oxide desulfurizer B. The main physical and chemical properties are shown in Table 1.

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Abstract

The invention relates to zinc oxide desulfurizer and a preparation method thereof. The zinc oxide desulfurizer is prepared by using ZnO, ZnCO3, TiO2 and NiO as a desulfuration active component, crosslinking bentonite as a porosity auxiliary agent, cement as agglomerant and methylcellulose as an extrusion aiding agent and by the steps of band extrusion forming, drying and roasting. The crosslinking bentonite is used as the porosity auxiliary agent of the zinc oxide desulfurizer, so that the pore volume and specific surface of the zinc oxide desulfurizer are increased effectively, and simultaneously, in order to ensure the strength of the zinc oxide desulfurizer, in the preparation method, aluminate cement is used as the agglomerant to increase the activity of desulfurization and sulfur capacity, wherein the pore volume is between 0.4 and 0.5 mL / g, the specific surface is between 60 and 80 m<2> / g, and the side pressure strength is between 80 and 100 N / cm. A small amount of NiO and TiO2 are added into the zinc oxide desulfurizer, so that the zinc oxide desulfurizer has high carbonyl sulfide and micromolecule mercaptan removing capacity, improves the desulfuration accuracy, is particularly suitable to be used as middle and low temperature desulfurizer, and has the advantages of cheap raw materials and simple preparation process. Due to the large pore volume and specific surface, the zinc oxide desulfurizer is high in desulfuration activity, high in desulfuration accuracy and large in sulfur capacity.

Description

Technical field: [0001] The invention relates to an oil refining and chemical purification technology, in particular to a desulfurizing agent in the desulfurization purification technology and a preparation method of the desulfurizing agent. Background technique: [0002] Desulfurization and purification technology is widely used in oil refining and chemical industry. The desulfurization and purification technology varies with the type and molecular weight of sulfide and the phase state of the medium. If the medium is liquid, such as oil, the sulfide is an organic sulfide. Hydrodesulfurization is used to convert organic sulfur into hydrogen sulfide with a smaller molecular weight and lower boiling point through hydrogenation, so that the difference between the boiling point of the sulfide and the medium is widened, and the sulfur is removed by stripping. If the molecular weight of the sulfide is small, the boiling point is low, the medium is the gas phase, and the sulfide an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G29/00C10G29/16
Inventor 陆久民阎富山王绍武赵伟李红琳刘福全
Owner 长春惠工净化工业有限公司
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