Novel biomass-based catalyst as well as preparation method thereof and application of catalyst in coal pyrolysis

A biomass and catalyst technology, applied in the field of coal dry distillation engineering, can solve the problems such as thermal depolymerization that no one has raised, and achieve the effects of good thermal stability and oxidation resistance, stable structure, and improved conversion rate

Active Publication Date: 2019-06-07
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, no one has prepared Fe-Ni / Humus catalyst, and no one has proposed to apply this catalyst to the thermal depolymerization of coal.

Method used

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  • Novel biomass-based catalyst as well as preparation method thereof and application of catalyst in coal pyrolysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A method for pyrolyzing coal using a novel bio-based catalyst, the steps are as follows:

[0038] (1) Take 1g of dehydrated lignite powder, add 4mL of swelling agent (the volume ratio of tetrahydrofuran: isopropanol is 3:1, the following examples are the same), stir for 24h in a water bath at 50°C, filter, recover the swelling agent, and collect The solid is dried to obtain swollen lignite;

[0039] (2) Take 1g of humus, carbonize it at 800°C for 1 hour, cool it and grind it into a powder below 200 meshes. Under ultrasonic conditions, disperse the powder into 100mL ethanol to obtain a humus solution; at the same time, take Ni(NO 3 ) 2 solution (100g / L, 5mL), add 0.1g of Al 2 o 3 powder, stirred in a water bath at a constant temperature of 50°C for 10 hours, dried in a constant temperature oven at 110°C to dryness to make a light green powder, and then roasted at 700°C for 2 hours to obtain a binder; Fe 2 o 3 Mix evenly with the obtained humic solution at a mass rat...

Embodiment 2

[0043] A method for pyrolyzing coal using a novel bio-based catalyst, the steps are as follows:

[0044] (1) Take 1 g of dehydrated lignite powder, add 4 mL of swelling agent, stir for 24 hours in a water bath at 50°C, filter, recover the swelling agent, collect the solid and dry to obtain swollen lignite;

[0045] (2) Take 1g of humic substance, carbonize it at 800°C for 1h, cool it and grind it into a powder below 200 mesh, and disperse the powder into 100mL ethanol under ultrasonic conditions to obtain humic acid solution; meanwhile, take Ni(NO 3 ) 2 solution (100g / L, 5mL), add 0.1g of Al 2 o 3 powder, stirred in a water bath at a constant temperature of 50°C for 10 hours, dried in a constant temperature oven at 110°C to dryness to make a light green powder, and then roasted at 700°C for 2 hours to obtain a binder; Fe 2 o 3 Mix evenly with the pretreated humic substance solution at a mass ratio of 1:3, add 0.4g of binder, then add nitric acid solution (63g / L, 3mL), mix ...

Embodiment 3

[0049] A method for pyrolyzing coal using a novel bio-based catalyst, the steps are as follows:

[0050] (1) Take 1 g of dehydrated lignite powder, add 4 mL of swelling agent, stir for 24 hours in a water bath at 50°C, filter, recover the swelling agent, collect the solid and dry to obtain swollen lignite;

[0051] (2) Take 1g of humic substance, carbonize it at 800°C for 1h, cool it and grind it into a powder below 200 mesh, and disperse the powder into 100mL ethanol under ultrasonic conditions to obtain humic acid solution; meanwhile, take Ni(NO 3 ) 2 solution (100g / L, 5mL), add 0.1g of Al 2 o 3 powder, stirred in a water bath at a constant temperature of 50°C for 10 hours, dried in a constant temperature oven at 110°C to dryness to make a light green powder, and then roasted at 700°C for 2 hours to obtain a binder; Fe 2 o 3 Mix evenly with humus solution at a mass ratio of 1:3, add 0.4g of binder, and then add nitric acid solution (63g / L, 3mL), mix evenly, extrude, and ...

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Abstract

The invention belongs to the technical field of coal dry distillation engineering, and particularly relates to a method for depolymerizing coal by utilizing a novel biomass-based catalyst. Specifically, brown coal is pyrolyzed by using the novel Fe-Ni/Humus catalyst. The novel biomass-based catalyst Fe-Ni/Humus provided by the invention has the advantages of a high content of active component Fe,good thermal stability and oxidation resistance, better catalytic activity, cheapness and accessibility; and when the novel biomass-based catalyst is used for pyrolysis of the brown coal, the conversion rate of coal coke cracking can be improved, the catalyst can be regenerated, and a recycling pollution-free production conception is realized.

Description

technical field [0001] The invention belongs to the technical field of coal dry distillation engineering, and in particular relates to a method for depolymerizing coal by using a novel bio-based catalyst. Background technique [0002] At present, widely used supported catalyst support materials are mainly divided into inorganic materials and synthetic organic polymer materials. Common inorganic supports include: silicon-based materials (amorphous silica gel, mesoporous silica gel, silicon-based organic-inorganic hybrid materials), carbon-based materials (activated carbon, graphene, carbon nanotubes), metal oxides (Al 2 o 3 、TiO 2 , ZnO, CeO 2 , ZrO 2 ), molecular sieves and magnetic materials; common synthetic organic polymer carriers include: polyethylene, polypropylene, polystyrene, polyethylene glycol, Merrifield, resins, etc. Although these supported catalysts solve the problem of difficult recovery of homogeneous catalysis, they also have disadvantages, such as: hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J37/02C10B53/04C10B57/06
Inventor 周国莉曲啸洋曹亦俊刘盼范桂侠李鹏李超
Owner ZHENGZHOU UNIV
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