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A two-stage biomass conversion process

A biomass and process technology, applied in the chemical industry, biomass utilization, and energy fields, can solve the problems of large waste water production and low calorific value of oil products

Active Publication Date: 2020-11-06
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the existing biomass liquefaction process, such as the need for dehydration of biomass raw materials, strict requirements on reaction atmosphere and catalyst, low calorific value of oil products and large amount of waste water, and then provide A two-stage biomass conversion process that does not require dehydration of biomass raw materials, adopts an atmosphere containing CO in the reaction atmosphere, has a high calorific value of oil products, produces low waste water, and even produces no waste water

Method used

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  • A two-stage biomass conversion process

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Effect test

Embodiment 1

[0089] This embodiment provides a two-stage biomass conversion process, comprising the following steps:

[0090] Iron catalyst:

[0091] The iron-based catalyst is a waste agent of a desulfurizer with iron oxide as an active component, wherein, in the desulfurizer with iron oxide as an active component, 10g of calcium bicarbonate, 12g of basic copper carbonate, γ-Fe 2 o 3 18g, MnO 2 is 8g, NiO is 5g;

[0092] The desulfurization process of the above-mentioned desulfurizer with iron oxide as the active component is summarized as follows:

[0093] 1) Collect the tail gas produced by the fixed bed hydrogenation catalysis of medium and low temperature coal tar;

[0094] 2) The desulfurizing agent of this embodiment is made into columnar catalyst particles with a diameter of 1 mm and a length of 15 mm, and filled in the desulfurization tower to form a desulfurization layer;

[0095] 3) The above-mentioned tail gas is used for 2000h -1 The space velocity passes through the d...

Embodiment 2

[0108] This embodiment provides a two-stage biomass conversion process, comprising the following steps:

[0109] Iron catalyst:

[0110] The iron-based catalyst is amorphous FeOOH; add sulfur: add solid sulfur powder to the above-mentioned iron-based catalyst until the molar ratio of iron to sulfur is 1:2, so as to ensure that the molar ratio of iron to sulfur in the reaction system is 1:2;

[0111] Preparation of slurry:

[0112] (1) collecting corn stalks, the water content of which is 5-20wt%, and then pulverizing them to a particle size of 0.2-5cm with an ultrafine pulverizer;

[0113] (2) Compress the straw crushed in step (1) with a plodder, the compression pressure is 2.5MPa, the compression temperature is 45°C, and compressed to a true density of 1.0kg / m 3 ;

[0114] (3) crushing the straw compressed and molded in step (2) again with an airflow mill until the particle size is 0.1-500 microns to obtain straw powder;

[0115] (4) Mix 110 kg of waste lubricating o...

Embodiment 3

[0122] This embodiment provides a two-stage biomass conversion process, comprising the following steps:

[0123] Iron catalyst:

[0124] The iron-based catalyst is the regeneration of the waste agent of the desulfurizer with iron oxyhydroxide as the active component, wherein, based on the total mass of the desulfurizer with iron oxyhydroxide as the active component, α-FeOOH is 30g, and the amorphous oxyhydroxide is oxidized 20g of iron, 8g of potassium oxide, 10g of binder kaolin;

[0125] The above-mentioned desulfurizer with iron oxyhydroxide as the active component is used for the desulfurization process of the tail gas produced after the hydrogenation and upgrading of medium and low temperature coal tar in industry as follows:

[0126]1) Collect the tail gas produced by the fixed bed hydrogenation catalysis of medium and low temperature coal tar;

[0127] 2) The desulfurizing agent of this embodiment is made into columnar catalyst particles with a diameter of 1 mm and a...

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Abstract

The invention belongs to the technical fields of biomass utilization, energy and chemical industry, and concretely relates to a two-stage conversion technology for biomass. The conversion technology uses at least one of iron oxide, a desulfurization waste agent of the iron oxide or a regenerated material of the desulfurization waste agent of the iron oxide as a catalyst, and controls a molar ratioof the iron element to the sulfur element in a reaction system. It is found that in carbonylation can be effectively utilized to block the free radical polycondensation of the biomass in the crackingprocess in the presence of CO and realize active hydrogen transformation and hydrogenation of CO and water; and the biomass, especially the biomass solid, can directly undergo a conversion reaction without being hydrated in the conversion reaction, and water can be externally added to a biomass liquid or mineral oil, so the liquefaction yield is increased, the calorific value of an obtained oil product is improved, and a large amount of waste water is not generated after the conversion reaction is completed.

Description

technical field [0001] The invention belongs to the technical fields of biomass utilization, energy and chemical industry, and in particular relates to a two-stage conversion process of biomass. Background technique [0002] With the rapid development of social economy, fossil non-renewable energy sources such as coal, crude oil, natural gas, and oil shale are becoming increasingly exhausted. At the same time, the CO produced by the combustion of such fossil non-renewable energy 2 , SO 2 , NO x Environmental pollution caused by pollutants such as pollutants is also becoming more and more serious, which forces human beings to think about ways to obtain energy and methods to improve the environment. [0003] At present, biomass liquefaction technology has become a new means of obtaining energy. This technology is an important part of the utilization of biomass resources. The liquefaction mechanism is as follows: biomass is first cracked into oligomers, and then dehydrated an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/08
CPCC10G1/08
Inventor 林科郭立新崔永君
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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