Reforming hydrogen production catalyst with waste vanadium-titanium denitration catalyst as raw material and preparation method of reforming hydrogen production catalyst

A denitrification catalyst and reforming hydrogen production technology, applied in the direction of heterogeneous catalyst chemical elements, chemical instruments and methods, physical/chemical process catalysts, etc., can solve environmental pollution of organic pollutants, lack of safe disposal and resource technology, etc. problems, to achieve the effects of being environmentally friendly, solving secondary pollution, and enhancing the value of application and promotion

Active Publication Date: 2019-10-08
NANJING UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the large amount of waste vanadium-titanium denitrification catalysts in China, the lack of advanced safety disposal and recycling technology, and the environmental pollution of organic pollutants, the present invention innovatively proposes the use of waste vanadium-titanium denitrification catalysts to prepare high-performance porous ceramic membranes Reforming hydrogen production catalysts fundamentally solves the problem of large quantities of waste vanadium and titanium denitrification catalysts and realizes their high value-added resource utilization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Raw material crushing

[0036] The waste vanadium-titanium denitrification catalyst is successively crushed by a crusher and ball mill, and homogenized through a 100-mesh standard sieve for standby; the diatomite powder and aluminum hydroxide powder are respectively ball-milled and homogenized through a 100-mesh standard sieve for standby;

[0037] (2) Ingredients and granulation

[0038] Weigh 80g of waste denitration catalyst powder, 5g of diatomite powder, and 5g of aluminum hydroxide powder and stir evenly, then weigh 10g of polyvinyl alcohol forming agent solution and mix with the above powder for grinding and granulation;

[0039] (3) Molding and first calcination

[0040] Weigh 10g of the granulated mud and slowly add it to the mold and pressurize to 10MPa. After holding the pressure for 1min, take out the sample, repeat the molding of the green body 10 times to make 10 porous ceramic membrane green bodies, and place them in the kiln. Calcined at 1100°C for...

Embodiment 2

[0051] (1) Raw material crushing

[0052] The waste vanadium-titanium denitrification catalyst is crushed by a crusher and a ball mill in turn, and then passed through a 100-mesh standard sieve for homogenization for later use; the silica powder and pseudo-boehmite powder are respectively ball-milled and passed through a 100-mesh standard sieve for further homogenization;

[0053] (2) Ingredients and granulation

[0054] Weigh 90g of waste denitration catalyst powder, 1g of silicon dioxide powder, and 1g of pseudoboehmite powder and stir evenly, then weigh 8g of polyvinyl alcohol forming agent solution and mix with the above powder for grinding and granulation;

[0055] (3) Molding and first calcination

[0056] Weigh 10 g of the granulated mud and slowly add it to the mold and pressurize to 15 MPa. After holding the pressure for 3 minutes, take out the sample, repeat the molding of the green body 10 times to make 10 porous ceramic membrane green bodies, and place them in the...

Embodiment 3

[0067] (1) Raw material crushing

[0068] The waste vanadium-titanium denitrification catalyst is crushed by a crusher and ball mill in turn, and passed through a 100-mesh standard sieve for subsequent use; the diatomite powder and pseudo-boehmite powder are respectively ball-milled and passed through a 100-mesh standard sieve for subsequent use;

[0069] (2) Ingredients and granulation

[0070] Weigh 80g of waste denitration catalyst powder, 5g of diatomite powder, and 5g of pseudoboehmite powder and stir evenly, then weigh 10g of polyvinyl alcohol forming agent solution and mix with the above powder for grinding and granulation;

[0071] (3) Molding and first calcination

[0072] Weigh 10g of the granulated mud and slowly add it to the mold and pressurize to 10MPa. After holding the pressure for 1min, take out the sample, repeat the molding of the green body 10 times to make 10 porous ceramic membrane green bodies, and place them in the kiln. Calcined at 1100°C for 1.5 hou...

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Abstract

The invention discloses a reforming hydrogen production catalyst with a waste vanadium-titanium denitration catalyst as a raw material and a preparation method of the reforming hydrogen production catalyst. The catalyst is a porous ceramic membrane as a carrier prepared from a waste vanadium-titanium denitration catalyst, a silicon source powder material, an aluminum source powder material and a molding agent solution, and nickel oxide is adopted as a catalysis active component. A porous ceramic membrane carrier is prepared from the waste vanadium-titanium denitration catalyst, the silicon source powder material, the aluminum source powder material and the molding agent solution through processes such as crushing, blending, pelletizing, molding and calcining, the porous ceramic membrane carrier is soaked into an active component precursor solution, and the reforming hydrogen production catalyst is prepared through drying and roasting. By adopting the reforming hydrogen production catalyst, not only is harmless treatment on the waste vanadium-titanium denitration catalyst achieved, but also recycling hydrogen production with high additional values can be achieved, in addition, the reforming formaldehyde hydrogen product H2 selectivity is high, a small amount of active components are carried, the cost is low, and wide market application prospects can be achieved.

Description

technical field [0001] The invention provides a reforming hydrogen production catalyst using waste vanadium-titanium denitrification catalyst as a raw material and a preparation method thereof, belonging to the technical fields of resource utilization of waste products and new energy. Background technique [0002] Nitrogen oxides are the main cause of pollution such as smog and acid rain. The denitrification of industrial flue gas such as thermal power plants has become the focus of current air pollution control. As of 2017, there were more than 1.2 million cubic meters of catalysts in service. According to the thermal power denitrification project that was launched in 2013, the average life of the catalyst was 3-5 years. The vanadium-titanium denitrification catalyst will be included in the batch "replacement period". On the other hand, the website of the Ministry of Environmental Protection issued the "Notice on Strengthening the Supervision of Waste Flue Gas Denitrificati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/888C01B3/22
CPCB01J23/002B01J23/888C01B3/22C01B2203/0227C01B2203/0277C01B2203/1058C01B2203/1082C01B2203/1211B01J2523/00B01J2523/31B01J2523/41B01J2523/47B01J2523/55B01J2523/69B01J2523/847Y02P20/584
Inventor 沈岳松金奇杰
Owner NANJING UNIV OF TECH
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