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A secondary biomass conversion process

A biomass and process technology, applied in the field of biomass secondary conversion process, can solve the problems of low calorific value of oil products and large amount of waste water, and achieve the effects of simple process, increased fluidity, and increased compression pressure and temperature

Active Publication Date: 2021-11-09
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 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 secondary biomass conversion process that does not require dehydration of biomass raw materials, adopts an atmosphere containing CO in the reaction atmosphere, has high calorific value of oil products, low waste water generation, and even no waste water

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  • A secondary biomass conversion process

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Embodiment 1

[0072] This embodiment provides a biomass secondary conversion process, comprising the following steps:

[0073] Preparation of biomass slurry:

[0074] collecting corn stalks, the water content of which is 5-20wt%, and then pulverizing them to a particle size of 0.2 μm-5 cm by using an ultrafine pulverizer;

[0075] Compress the crushed straw 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 ;

[0076] The compressed and molded straw was pulverized again with a jet mill, passed through a 100-mesh sieve to obtain straw powder, and 40 kg of straw powder was weighed and mixed with a catalyst to obtain a mixed powder;

[0077] 80kg of waste lubricating oil, mixed powder, and 4kg of water were mixed, and a colloid mill was used for grinding and pulping. The grinding and pulping time was 15 minutes to obtain a biomass slurry.

[0078] The catalyst added in the slurry is an iron-based catalyst w...

Embodiment 2

[0090] This embodiment provides a biomass secondary conversion process, comprising the following steps:

[0091] Preparation of biomass slurry:

[0092] Collecting wheat straw, the water content of which is 10-20wt%, and then pulverizing it to a particle size of 0.2μm-5cm by using an ultrafine pulverizer;

[0093] Compress the crushed straw with a plodder, the compression pressure is 0.5MPa, the compression temperature is 60°C, and compressed to a true density of 0.75kg / m 3 ;

[0094] The compressed and molded straw is pulverized again with a jet mill, and passed through an 80-mesh sieve to obtain straw powder;

[0095] 100kg of washing oil was mixed with 100kg of straw powder and 3kg of water, and a colloid mill was used for grinding and pulping. The grinding and pulping time was 8 minutes to obtain biomass slurry.

[0096] The catalyst added in the slurry is an iron-based catalyst with a content of 1 wt%, and the average particle diameter of the added iron-based catalyst...

Embodiment 3

[0110] This embodiment provides a biomass secondary conversion process, comprising the following steps:

[0111] Preparation of biomass slurry:

[0112] Collect red algae, air-dry until its water content is lower than 20wt%, and crush to a particle size of 0.2 μm-5cm;

[0113] Compress the pulverized red algae into a tablet press with a compression pressure of 3MPa, a compression temperature of 40°C, and compress to a true density of 0.95kg / m 3 ;

[0114] The compressed red algae is pulverized again with a jet mill, and passed through a 100-mesh sieve to obtain red algae powder;

[0115] Get 40kg pulverized red algae powder and mix with 50kg waste engine oil and 4kg water, grind and make slurry for 12min to obtain biomass slurry.

[0116] The catalyst added in the slurry is an iron-based catalyst with a content of 1 wt%, and the average particle diameter of the added iron-based catalyst is 10 μm.

[0117] Iron catalyst:

[0118] The iron-based catalyst is amorphous FeO...

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Abstract

The invention belongs to the technical fields of biomass utilization, energy and chemical industry, and specifically relates to a biomass secondary conversion process. The conversion process uses at least one of iron oxide compounds, waste desulfurization agents of iron oxide compounds, or regenerated waste desulfurization agents of iron oxide compounds as a catalyst, and uses aqueous slurry to control the moles of iron and sulfur in the reaction system. It is found that in the presence of CO, carbonylation can be effectively used to block the free radical polycondensation of organic matter in the cracking process, and realize the transformation of CO and water into hydrogenation of active hydrogen. In this conversion reaction, organic matter, especially biomass solids, do not need Dehydration, conversion reaction can be carried out directly, additional water can be added to the biomass liquid or mineral oil, while improving the liquefaction yield, it can also increase the calorific value of the obtained oil. After the conversion reaction is completed, a large amount of waste water will not be generated .

Description

technical field [0001] The invention belongs to the technical fields of biomass utilization, energy and chemical industry, and specifically relates to a biomass secondary conversion process. 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 and de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/08C10G1/00
CPCC10G1/002C10G1/08C10G2300/1011
Inventor 林科郭立新
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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