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A two-stage conversion and refining process of biomass

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

Active Publication Date: 2020-06-12
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 existing biomass liquefaction process, which requires dehydration of biomass raw materials, strict requirements on reaction atmosphere and catalyst, low calorific value of oil products, low yield of liquefied oil and waste water production. In order to provide a two-stage conversion and refining process of biomass without dehydration, the reaction atmosphere adopts CO-containing atmosphere, the calorific value of oil products is high, the amount of waste water is low, and even no waste water is generated.

Method used

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  • A two-stage conversion and refining process of biomass

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Embodiment 1

[0102] This embodiment provides a two-stage conversion and purification process for biomass, which includes the following steps:

[0103] Iron-based catalyst:

[0104] The iron-based catalyst is a waste agent of a desulfurizer with iron oxide as the active component, wherein, in the desulfurizer with iron oxide as the active component, calcium bicarbonate is 10g, basic copper carbonate is 12g, and γ-Fe 2 O 3 18g, MnO 2 8g, NiO is 5g;

[0105] The desulfurization process of the desulfurizer with iron oxide as the active component is summarized as follows:

[0106] 1) Collect the tail gas produced by the fixed bed hydrogenation catalysis of medium and low temperature coal tar;

[0107] 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 filling them in the desulfurization tower to form a desulfurization layer;

[0108] 3) Reduce the above exhaust gas to 2000h -1 The space velocity through the desulfuriza...

Embodiment 2

[0127] This embodiment provides a two-stage conversion and purification process for biomass, which includes the following steps:

[0128] Iron-based catalyst:

[0129] The iron-based catalyst is amorphous FeOOH; adding sulfur: the above-mentioned iron-based catalyst is mixed with solid sulfur powder so that 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;

[0130] Preparation of slurry:

[0131] (1) Collect corn stalks with a moisture content of 5-20wt%, and then use an ultrafine pulverizer to crush them to a particle size of 0.2-5 cm;

[0132] (2) Compress and shape the stalks crushed in step (1) with a plodder. The compression pressure is 2.5MPa, the compression temperature is 45°C, and the true density is 1.0kg / m. 3 ;

[0133] (3) The straw after compression molding in step (2) is pulverized again with a jet mill to a particle size of 0.1-500 microns to obtain straw powder;

[0134] (4) Mix 80 kg of waste ...

Embodiment 3

[0147] This embodiment provides a two-stage conversion and purification process for biomass, including the following steps:

[0148] Iron-based catalyst:

[0149] The iron-based catalyst is the regeneration of the waste agent of the desulfurizer with iron oxyhydroxide as the active component. Among them, based on the total mass of the desulfurizer with iron oxyhydroxide as the active component, the α-FeOOH is 30g, and the amorphous oxyhydroxide is oxidized Iron is 20g, potassium oxide is 8g, and binder kaolin is 10g;

[0150] The above-mentioned desulfurizer with iron oxyhydroxide as the active component is used in the desulfurization process of the tail gas produced after the hydro-upgrading of coal tar at medium and low temperature in industry as follows:

[0151] 1) Collect the tail gas produced by the fixed bed hydrogenation catalysis of medium and low temperature coal tar;

[0152] 2) The desulfurizer of this embodiment is made into columnar catalyst particles with a diameter of 1...

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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 refining 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 ratio of 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 thecracking process 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 engineering, and specifically relates to a two-stage conversion and purification process of biomass. Background technique [0002] With the rapid development of the social economy, fossil non-renewable energy sources such as coal, crude oil, natural gas, oil shale, etc. are increasingly depleted. At the same time, the CO produced by the combustion of such fossil non-renewable energy sources 2 , SO 2 , NO x Environmental pollution caused by other pollutants is becoming more and more serious, which forces humans to think about ways to obtain energy and ways 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. Its liquefaction mechanism is as follows: biomass is first lysed into oligomers, and then dehydrated and dehydroxylated...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/06C10G67/02
CPCC10G1/06C10G67/02
Inventor 林科郭立新
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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