Converting and absorbing fine desulfurizer and its prepn

A fine desulfurization and absorption technology, which is applied in the field of conversion and absorption fine desulfurizers, can solve the problems of complex operation process, limited use, high investment cost, etc., and achieve the effect of simple operation process, large space velocity and low investment cost

Active Publication Date: 2005-12-14
HAISO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are many ways to remove sulfides from industrial raw gas, but most of them have low desulfurization accuracy and low working sulfur capacity, especially for organic sulfur thiophenes, sulfides, disulfides and mercaptans cannot be removed at the same time. Only the cobalt-molybdenum hydrogenation zinc oxide method can completely remove the above-mentioned organic sulfur, but the cobalt molybdenum hydrogenation zinc oxide method has problems such as high investment cost and complicated operation process, so its domestic use is subject to certain restrictions
Chinese patents CN85103555A and CN1040616A have developed a high-temperature conversion and absorption desulfurizer with manganese iron ore as the main raw material. This patented technology can convert and absorb some organic sulfides COS, CS 2 and inorganic sulfide H 2 S, but did not propose the conversion and absorption of organic sulfide sulfides, mercaptans, disulfides and thiophenes, etc., nor did it propose that the total sulfur could be refined to -6

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Preparation of fine desulfurizer

[0023] (1) Take 10g of powdered manganese ore ground to 80-100 mesh, 1.25g of 200-mesh powdered MgO, 1.25g of 200-mesh powdered CaO binder and appropriate amount of water, and then extrude it according to Φ3-5mm, and dry it at 120°C.

[0024] (2) Take Co(Ac) 2 0.01g, (NH 4 ) 6 Mo 7 o 24 0.01g, Cu(NO 3 ) 2 0.6g, Zn(NO 3 ) 2 0.8g, KNO 3 0.3g, dissolve the above substances in water, prepare a 10% solution, pour into 10g of the prepared carrier, stir evenly, soak for 10-15 hours, and dry at 120°C.

[0025] (3) The dried material was heated up to 380° C. at a heating rate of 20° C. / hour under nitrogen protection, kept at a constant temperature for 6 hours, and then gradually cooled to normal temperature to obtain a fine desulfurizer.

[0026] The composition (percentage by weight) of the fine desulfurizer is: Co 0.07%, Mo 0.07%, Cu 4.22%, Zn 5.63%, K 2.11%, manganese ore 87.90%.

Embodiment 2

[0028] Preparation of fine desulfurizer

[0029] (1) Take 10g of powdered manganese ore ground to 80-100 mesh, 1.25g of 200-mesh powdered MgO, 1.25g of 200-mesh powdered CaO binder and appropriate amount of water, and then extrude it according to Φ3-5mm, and dry it at 120°C.

[0030] (2) Take Co(Ac) 2 0.01g, (NH 4 ) 6 Mo 7 o 24 0.012g, Cu(NO 3 ) 2 0.8g, Zn(NO 3 ) 2 0.8g, KNO 3 0.3g, dissolve the above substances in water, prepare a 10% solution, pour into 10g of the prepared carrier, stir evenly, soak for 10-15 hours, and dry at 120°C.

[0031] (3) The dried material was heated up to 380° C. at a heating rate of 20° C. / hour under nitrogen protection, kept at a constant temperature for 6 hours, and then gradually cooled to normal temperature to obtain a fine desulfurizer.

[0032] The composition (percentage by weight) of the fine desulfurizer is: Co 0.07%, Mo 0.08%, Cu 5.55%, Zn 5.55%, K 2.08%, manganese ore 86.76%.

Embodiment 3

[0034] Preparation of fine desulfurizer

[0035] (1) Take 10g of powdered manganese ore ground to 80-100 mesh, 1.25g of 200-mesh powdered MgO, 1.25g of 200-mesh powdered CaO binder and appropriate amount of water, and then extrude it according to Φ3-5mm, and dry it at 120°C.

[0036] (2) Take Co(Ac) 2 0.008g, (NH 4 ) 6 Mo 7 o 24 0.008g, Cu(NO 3 ) 2 0.8g, Zn(NO 3 ) 2 0.6g, KNO 3 0.3g, dissolve the above substances in water, prepare a 10% solution, pour into 10g of the prepared carrier, stir evenly, soak for 10-15 hours, and dry at 120°C.

[0037] (3) The dried material was heated up to 380° C. at a heating rate of 20° C. / hour under nitrogen protection, kept at a constant temperature for 6 hours, and then gradually cooled to normal temperature to obtain a fine desulfurizer.

[0038] The composition (percentage by weight) of the fine desulfurizer is: Co 0.06%, Mo 0.06%, Cu 5.63%, Zn 4.22%, K 2.11%, manganese ore 87.92%.

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Abstract

The present invention is converting and absorbing fine desulfurizer and its preparation. The present invention features that the fine desulfurizer consists of Co 0.01-0.2 wt%, Mo 0.01-0.2 wt%, Cu 1-15 wt%, Zn 1-10 wt%, K 0.1-5 wt% and manganese ore 70-95 wt%, and is prepared with manganese ore bar as carrier and Co(Ac)2, (NH4)6Mo7O24, Cu(NO3)2, Zn(NO3)2 and KNO3 as precursors, and through precipitation process. The fine desulfurizer is suitable for fine eliminating organic sulfide and inorganic sulfide from natural gas, semiwater gas, coke oven gas, petroleum cracking gas, etc. to result in high desulfurizing precision and total outlet sulfur content lower than 0.1 ppm. The fine desulfurizer has high heat stability, high conversion rate, long service life and other advantages.

Description

technical field [0001] The invention relates to a conversion and absorption type fine desulfurizer of industrial raw materials for desulfurization of organic sulfur (sulfide, mercaptan, disulfide and thiophene, etc.) and inorganic sulfur and its preparation. The fine desulfurizer uses Co, Mo, Cu, Zn , K is an active metal, manganese ore is a conversion absorption type fine desulfurizer and its preparation. Background technique [0002] At present, there are many ways to remove sulfides from industrial raw gas, but most of them have low desulfurization accuracy and low working sulfur capacity, especially for organic sulfur thiophenes, sulfides, disulfides and mercaptans cannot be removed at the same time. Only the cobalt-molybdenum hydrogenation zinc oxide method can completely remove the above-mentioned organic sulfur, but the cobalt molybdenum hydrogenation zinc oxide method has problems such as high investment cost and complicated operation process, so its domestic use is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10K1/34
Inventor 胡典明孔渝华王先厚肖安陆魏华祝汉生
Owner HAISO TECH
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