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Catalyst for producing methane from biomass and coal, preparation method and application thereof

A catalyst and biomass technology, which is applied in the field of catalyst preparation and application, can solve the problems of easy carbon deposition and deactivation of catalysts, and achieve the effects of saving preparation time, shortening the process flow, and increasing the degree of dispersion

Inactive Publication Date: 2019-04-26
天津晟博飞科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coal is directly mixed with the catalyst and then passed into carbon monoxide to react, because the rich CO produced during the coal pyrolysis process 2 Pyrolysis gas, causing the catalyst to be easily deactivated by carbon deposition

Method used

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  • Catalyst for producing methane from biomass and coal, preparation method and application thereof
  • Catalyst for producing methane from biomass and coal, preparation method and application thereof
  • Catalyst for producing methane from biomass and coal, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1: the preparation method and application of the catalyst of biomass and coal methane

[0040] 1. The preparation method comprises the following steps:

[0041] (1) Crush and sieve 100g lignite sample into pulverized coal with particle size ≤ 5mm, then mix it with 5g asphalt binder and 5g iron oxide powder, put it into a molding mold after mixing, and carry out cold pressing molding. The coal samples were dried naturally.

[0042] (2) Carbonize the dried coal sample in a high-temperature carbonization furnace at 750°C for 35 minutes, and the flow rate of the carbonization furnace is 70mL / minN 2, cooled, and then activated at 500°C for 20min in a water vapor atmosphere, then continued to heat up to 800°C, 2 Activated under the atmosphere for 15 minutes to obtain carrier active coke.

[0043] (3) Immerse the active coke in a 4wt% ethanol mixed solution of nickel acetate and cerium acetate, the mass ratio of the two salt solutions is 1:1, soak at a constant t...

Embodiment 2

[0047] Embodiment 2: the preparation method and application of the catalyst of biomass and coal methane

[0048] 1. The preparation method comprises the following steps:

[0049] (1) Crush and sieve 100g of long-flame coal sample into pulverized coal with a particle size of ≤5mm, then mix it with 5g of asphalt binder and 5g of iron oxide powder, put it into a molding mold after mixing, and carry out cold pressing molding, The formed coal samples were naturally dried.

[0050] (2) Put the dried coal sample in a high-temperature carbonization furnace at 750°C for 35 minutes, and the flow rate in the carbonization furnace is 70mL / minN 2 , cooled, and then activated at 500°C for 20min in a water vapor atmosphere, then continued to heat up to 800°C, 2 Activated under the atmosphere for 15 minutes to obtain carrier active coke.

[0051] (3) Immerse the active coke in a 4wt% ethanol mixed solution of nickel acetate and cerium acetate, the mass ratio of the two salt solutions is 1:...

Embodiment 3

[0055] Embodiment 3: the preparation method and application of the catalyst of biomass and coal methane

[0056] 1. The preparation method comprises the following steps:

[0057] (1) 50g of lignite and 50g of long-flame coal were crushed and sieved into pulverized coal with a particle size of ≤5mm, then mixed with 5g of asphalt binder and 5g of iron oxide powder, mixed evenly and put into a molding die for cooling Press molding, and the coal samples after molding are naturally dried.

[0058] (2) Put the dried coal sample in a high-temperature carbonization furnace at 750°C for 35 minutes, and the flow rate in the carbonization furnace is 70mL / minN 2 , cooled, and then activated at 500°C for 20min in a water vapor atmosphere, then continued to heat up to 800°C, 2 Activated under the atmosphere for 15 minutes to obtain carrier active coke.

[0059] (3) Immerse the active coke in a 4wt% ethanol mixed solution of nickel acetate and cerium acetate, the mass ratio of the two sal...

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Abstract

The invention discloses a catalyst for methane preparation using biomass and coal and a preparation method and application of the catalyst and belongs to the field of catalyst preparation and application. The catalyst uses active coke as the carrier to load an active component which is nickel, cerium or yttrium and auxiliaries which are iron oxide and calcium oxide. The preparation method includes: mixing low-rank coal with binder and iron oxide powder to prepare active coke; impregnating for several times to load the active component and the calcium oxide. Methane can be generated by directlymixing the obtained catalyst with the biomass and coal and feeding water steam to perform reaction. The active coke is prepared from the low-rank coal, so that the carrier which is porous and large in specific surface area can be provided, and the preparation cost of the catalyst can be lowered; the catalyst can simultaneously catalyze biomass and coal pyrolytic reaction, water gas change reaction and methanation reaction.

Description

technical field [0001] The invention relates to a catalyst for producing methane from biomass and coal, a preparation method and application thereof, and belongs to the field of catalyst preparation and application. Background technique [0002] With the increase of total global energy consumption, the shortage of non-renewable resources such as oil and coal has become a key factor restricting social development. At the same time, carbon dioxide and sulfur dioxide produced during the utilization of petroleum and coal pose a serious threat to the environment. Therefore, the development of renewable energy has become an urgent task for social development. Biomass, as a renewable resource, has attracted the attention of researchers because of its rich resources and renewable properties. Biomass and water vapor reaction to generate methane technology is an effective way to cleanly utilize biomass energy. The methane gas generated in this process, as a clean energy source, can ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/83C10J3/20C10L3/08C07C1/00C07C9/04
CPCB01J23/002B01J23/83B01J2523/00C07C1/00C10J3/20C10J2300/0916C10J2300/093C10J2300/0976C10J2300/0986C10L3/08B01J2523/23B01J2523/3712B01J2523/842B01J2523/847B01J2523/36C07C9/04Y02E50/30Y02P20/52
Inventor 王金华郑佩佩王朝孟光刘江南
Owner 天津晟博飞科技有限公司
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