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A solid biomass conversion process

A solid biomass, biomass technology, applied in the direction of biofuels, solid fuels, waste fuels, etc., can solve the problems of large amount of waste water and low calorific value of oil products

Active Publication Date: 2020-03-10
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 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 further provide A biomass direct conversion process that does not require dehydration of biomass raw materials, the reaction atmosphere adopts an atmosphere containing CO, 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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Embodiment 1

[0081] This embodiment provides a solid biomass conversion process, such as figure 1 and figure 2 shown, including the following steps:

[0082] Biomass pretreatment:

[0083] Rice straw and reed straw are used as solid biomass, and the rice straw and reed straw are sent to the ultrafine pulverizer for primary crushing. The average particle size after primary crushing is 100 μm, and then the primary crushed rice straw and reed straw are sent to the Compressed in a briquetting machine, extruded to a diameter of 8mm, a length of 25mm, and an apparent density of not less than 0.4g / cm 3 , the water content is not greater than 15%, and then secondary pulverization is carried out by a roller mill. After secondary pulverization, biomass powder with an average particle size of 3mm is obtained, which is stored in a biomass powder storage tank for standby;

[0084] Catalyst and its pretreatment:

[0085] 1. Catalyst: The catalyst is the waste agent of the desulfurizer with FeOO...

Embodiment 2

[0099] This embodiment provides a solid biomass conversion process, comprising the following steps:

[0100] Biomass pretreatment:

[0101]Wheat straw and corn straw are used as solid biomass, and the wheat straw and corn straw are sent to the ultrafine pulverizer for primary crushing. The average particle size after primary crushing is 5cm, and then the primary crushed wheat straw and corn straw are sent to Compressed in a briquetting machine, extruded to a diameter of 2mm, a length of 50mm, and an apparent density of not less than 0.4g / cm 3 , the water content is not greater than 15%, and then secondary pulverization is carried out by a roller mill. After secondary pulverization, biomass powder with an average particle size of 5mm is obtained, which is stored in a biomass powder storage tank for standby;

[0102] Catalyst and its pretreatment:

[0103] 1. Catalyst: The catalyst is a waste agent of a desulfurizer with iron oxide as an active component, wherein, in the d...

Embodiment 3

[0120] This embodiment provides a solid biomass conversion process, comprising the following steps:

[0121] Biomass pretreatment:

[0122] Cotton stalks are used as solid biomass, and the cotton stalks are sent to a jet mill for primary crushing. The average particle size after primary crushing is 1cm, and then the primary crushed cotton stalks are sent to a briquetting machine for compression and extrusion. To its diameter of 10mm, length of 3mm, apparent density not less than 0.4g / cm 3 , the moisture content is not greater than 15%, and then secondary pulverization is carried out by a roller mill. After secondary pulverization, biomass powder with an average particle size of 200 μm is obtained, which is stored in a biomass powder storage tank for standby;

[0123] Catalyst and its pretreatment:

[0124] 1. Catalyst: the catalyst is amorphous FeOOH; add sulfur: add solid sulfur powder to the above catalyst until the molar ratio of iron and sulfur is 1:2, so as to ensur...

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Abstract

The invention belongs to the technical field of biomass utilization, energy and chemical engineering, and particularly relates to a solid biomass conversion process. According to the process, at leastone of iron oxide compounds and desulfurization waste agents of the iron oxide compounds or regeneration substances of desulfurization waste agents of the iron oxide compounds serves as a catalyst, results show that free radical polycondensation of a biomass can be effectively interdicted in the cracking process in CO atmosphere by a carbonylation mode, conversion active hydrogenation of CO and water is achieved, so that liquefaction yield is remarkably improved, the liquid fuel conversion rate of the solid biomass is higher than 40% in the CO atmosphere, the content of oxygen in converted liquid fuel is lower than 5wt%, and a heat value is larger than 8000Kcal.

Description

technical field [0001] The invention belongs to the technical fields of biomass utilization, energy and chemical industry, and specifically relates to a solid biomass conversion process, in particular to a solid biomass conversion process under a CO-containing atmosphere. 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/06C10L5/44C10L5/46
CPCC10G1/06C10L5/442C10L5/445C10L5/46Y02E50/10Y02E50/30
Inventor 林科郭立新李胜峰崔冬梅
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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