A deoxidizing and desulfurizing double-functional fine desulfurizer and its preparation method

A fine desulfurization and dual-function technology, which is applied in the field of catalysts and preparations required for the purification of methanol raw material gas produced from coke oven gas and converter gas, and can solve the problem of easy loss of sulfuric acid hydrolysis active components and unstable maintenance of deoxygenation and desulfurization activities , Difficult to maintain activity stability and other issues, to achieve the effect of avoiding sulfation inactivation, ensuring activity stability, and activity stability

Active Publication Date: 2017-01-25
WUHAN KELIN FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] FeMn composite oxides can convert and absorb organic sulfur, and can also catalyze the removal of O 2 , but industrial applications show that during use, the deoxidation and desulfurization activity cannot be maintained stably due to the continuous sulfur absorption of the active components
[0014] Patent CN102423623A provides a conversion and absorption of organic sulfur, which can also catalyze the removal of O 2 purifying agent, but its carrier is Al 2 o 3 , the loading capacity of the active components for conversion and absorption of organic sulfur is limited, and the problem of easy loss of sulfation and hydrolysis active components has not been solved, and it is difficult to maintain the stability of the activity

Method used

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  • A deoxidizing and desulfurizing double-functional fine desulfurizer and its preparation method
  • A deoxidizing and desulfurizing double-functional fine desulfurizer and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Dissolve 15g of copper nitrate in 75ml of deionized water to make a solution. Weigh γ-Fe 2 o 3 72.3g of raw powder, 33g of lime, and 4g of scallop powder, mix and grind evenly, then add the prepared copper nitrate solution, stir and roll evenly, then extrude, place for 4h, dry at 110°C for 4h, and then dry at 500°C After 7 hours of calcination, the composite oxide precursor was obtained. Then, weigh 6.1g of ammonium molybdate and 1.1g of citric acid, dissolve them in 62.5ml of deionized water, and place them for 10 hours, soak the composite oxide precursor for 6 hours, place them for 6 hours, bake them at 120°C for 3 hours, and then bake them at 450°C 4h, promptly make described deoxygenation desulfurization bifunctional refined desulfurizer product, wherein Fe 2 o 3 65%, CaO 25%, CuO 5%, MoO 3 5%. The bulk density is 0.85g / cm 3 , specific surface area 110g / m 2 , pore volume 0.28ml / g, named DT-1 catalyst.

Embodiment 2

[0027] Dissolve 36.7g of zinc nitrate in 70ml of deionized water to make a solution. Weigh γ-Fe 2 o 3 44.5g of raw powder, 52.8g of lime, 4g of safflower powder, mix and grind evenly, then add the prepared zinc nitrate solution, stir and roll evenly, then extrude, place for 4h, dry at 150°C for 3h, and then dry at 400°C After calcination at ℃ for 8h, the composite oxide precursor was obtained. Then, weigh 12.2g of ammonium molybdate and 2.2g of citric acid, dissolve them in 57.5ml of deionized water, and place them for 12 hours, soak the composite oxide precursor for 8 hours, place them for 6 hours, bake at 100°C for 5h, and bake at 550°C 2h, promptly make described deoxygenation desulfurization bifunctional refined desulfurizer product, wherein Fe 2 o 3 40% for CaO, 10% for ZnO, 10% for MoO 3 10%, the bulk density is 0.95g / cm 3 , specific surface area 102g / m 2 , pore volume 0.24ml / g, named DT-2 catalyst.

Embodiment 3

[0029] Dissolve 12.7 g of antimony nitrate in 60 ml of deionized water to prepare a solution. Weigh 61g of manganese ore powder, 52.4g of magnesium oxide, and 4g of scallop powder, mix and grind evenly, then add the prepared antimony nitrate solution, stir and roll evenly, then extrude, place for 4h, and dry at 130°C for 3.5h. The compound oxide precursor was obtained after calcining at 600° C. for 6 h. Then, weigh 6.1g of ammonium metatungstate and 0.4g of citric acid, dissolve them in 50.5ml of deionized water, and place them for 8 hours, soak the composite oxide precursor for 4 hours, place them for 6 hours, bake them at 130°C for 1h, and then dry them at 500°C Roasting at lower temperature for 4 hours to impregnate the composite oxide precursor etc., drying at 120°C, and roasting at 450°C for 4 hours to obtain the deoxidation and desulfurization dual-functional fine desulfurizer product, in which MnO 2 is 55%, MgO is 36%, Sb 2 o3 6%, WO 3 5%, the bulk density is 1.15g / c...

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Abstract

The invention discloses a deoxygenating and desulfurization double-function fine desulfurization agent and a preparation method thereof. The structure of the fine desulfurization agent is aAxOy.bGO.mDxOy.nMO3, wherein A is iron or manganese; G is calcium or magnesium; D is one of copper, zinc, antimony, lead and silver; and M is molybdenum or tungsten. The deoxygenating and desulfurization double-function fine desulfurization agent comprises the following components according to the total mass of the catalyst: 40%-65% of AxOy, 25%-40% of GO, 5%-10% of DxOy and 5%-10% of MO3. The catalyst can be used for purifying coke oven gas and raw gas for producing methanol by converter gas, and has the advantages of good deoxygenating and desulfurization activity, no byproducts including mercaptan and the like, stable activity and the like.

Description

technical field [0001] The invention relates to a double-functional fine desulfurizer for deoxidation and desulfurization and a preparation method thereof, which is particularly suitable for a catalyst required for purifying methanol raw material gas produced from coke oven gas and converter gas and a preparation method thereof. Background technique [0002] Among the basic organic chemical raw materials in the world, the consumption of methanol ranks fourth after ethylene, propylene and benzene. At present, coke oven gas and converter gas production methanol projects have been put into operation one after another because of their recycling of resources, significant economic and social benefits. The key to this technology is the purification of raw gas, especially the deep removal of oxygen and COS, CS 2 and other organic sulfur. [0003] COS, CS 2 Such organic sulfur is usually converted to H by hydrolysis or hydrogenation 2 S is removed. The main reactions that occur ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/887B01J23/34B01J23/89C10K1/34
Inventor 王国兴张先茂王天元王泽金建涛赵志杰王海洋王栋斌王骥飞
Owner WUHAN KELIN FINE CHEM
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