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Rapid production technology of SCR (Selective Catalytic Reduction) denitrification catalyst

A denitration catalyst and manufacturing process technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc. problems, to achieve the effect of excellent product quality and energy saving

Inactive Publication Date: 2018-06-29
安徽弘昇环境工程科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation process of the traditional V-W-Ti denitration catalyst includes the processes of material mixing, sludge cooling pretreatment, aging, filtration pre-extrusion, molding extrusion, primary drying, secondary drying, calcination, cutting and packaging. Complicated, long cycle, high energy consumption

Method used

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  • Rapid production technology of SCR (Selective Catalytic Reduction) denitrification catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The present invention comprises the following steps:

[0035] Step 1, mixing:

[0036] Step 1.1: Add titanium-tungsten powder, titanium-tungsten-silicon powder, glass fiber, and polypropylene fiber to the mixer in sequence and stir evenly, then add deionized water, ammonia water, oleic acid, glycerin to the mixer in sequence and mix Stir evenly to obtain mud, the concentration of ammonia water is about 20wt%, and the weight ratio of titanium tungsten powder, titanium tungsten silicon powder, glass fiber, polypropylene fiber, deionized water, ammonia water, oleic acid and glycerin is 60:12 :5:0.5:10:10:0.5:0.5; mixing process stirring speed 300 rev / min.

[0037] The order of adding liquid additives deionized water, ammonia water, oleic acid and lactic acid follows the principle from more to less, which prevents the powder material from absorbing a small amount of liquid additives in some areas due to its water absorption performance and making it kneaded out. The mud c...

Embodiment 2

[0052] The present invention comprises the following steps:

[0053] Step 1, mixing:

[0054] Step 1.1: Add titanium-tungsten powder, titanium-tungsten-silicon powder, glass fiber, and polypropylene fiber to the mixer in sequence and stir evenly, then add deionized water, ammonia water, oleic acid, glycerin to the mixer in sequence and mix Stir evenly to obtain mud, the concentration of ammonia water is 18-22wt%, and the weight ratio of titanium tungsten powder, titanium tungsten silicon powder, glass fiber, polypropylene fiber, deionized water, ammonia water, oleic acid and glycerol is 50: 8:2:0.1:5:5:0.1:0.1.

[0055] Step 1.2, adding active solution M to the mud and stirring evenly to form a mixture A, the active solution M is a mixed solution of monoethanolamine and ammonium metavanadate, and the monoethanolamine accounts for 10wt of the total weight of the active solution M %, the ammonium metavanadate accounts for 10 wt% of the total weight of the active solution M, an...

Embodiment 3

[0067] The present invention comprises the following steps:

[0068] Step 1, mixing:

[0069] Step 1.1: Add titanium-tungsten powder, titanium-tungsten-silicon powder, glass fiber, and polypropylene fiber to the mixer in sequence and stir evenly, then add deionized water, ammonia water, oleic acid, glycerin to the mixer in sequence and mix Stir evenly to obtain mud, the ammonia concentration is 20wt%, and the weight ratio of titanium tungsten powder, titanium tungsten silicon powder, glass fiber, polypropylene fiber, deionized water, ammonia water, oleic acid and glycerin is 70:15: 8:1:15:15:1:1.

[0070] Step 1.2, adding active solution M to the mud and stirring evenly to form a mixture A, the active solution M is a mixed solution of monoethanolamine and ammonium metavanadate, and the monoethanolamine accounts for 30wt of the total weight of the active solution M %, the ammonium metavanadate accounts for 40wt% of the total weight of the active solution M, and the active sol...

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Abstract

The invention relates to a rapid production technology of an SCR (Selective Catalytic Reduction) denitrification catalyst. The rapid production technology comprises the following steps: mixing, cooling and pre-cooling, filtering and pre-extruding, extruding and molding, carrying out primary drying, carrying out secondary drying, calcining, cutting and packaging. According to the rapid production technology provided by the invention, a special formula is adopted so that the time of mixing, ageing, cooling and pre-cooling, molding and extruding, carrying out the primary drying and calcining in an SCR denitrification catalyst production cost is reduced through a special formula, the productivity of equipment is improved and the production energy consumption of unit products is reduced. Meanwhile, the product quality of the SCR denitrification catalyst prepared by the rapid production technology is excellent.

Description

technical field [0001] The invention belongs to the technical field of preparation of denitration catalysts, in particular to a rapid manufacturing process of SCR denitration catalysts. Background technique [0002] At present, the V-W-Ti type denitration catalyst produced in China is based on TiO 2 as the carrier, V 2 o 5 is the active substance, WO 3 as a cocatalyst. The preparation process of the traditional V-W-Ti denitration catalyst includes the processes of material mixing, sludge cooling pretreatment, aging, filtration pre-extrusion, molding extrusion, primary drying, secondary drying, calcination, cutting and packaging. Complicated, long cycle, high energy consumption. at about 200,000 m 3 / year production line as an example, the comprehensive energy consumption is about 1500 yuan / m 3 , The catalyst production cycle is about 14 days, and the annual energy expenditure (water, electricity, steam) on the catalyst production line is about 300 million yuan. Cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/30B01D53/90B01D53/56
CPCB01D53/8628B01D53/90B01J23/30B01J35/002B01J35/1014
Inventor 巫福明李兴旺
Owner 安徽弘昇环境工程科技有限公司
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