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Process for producing light oil through second-stage conversion of biomass

A biomass and light oil technology, which is used in the petroleum industry, the preparation of liquid hydrocarbon mixtures, and the treatment of hydrocarbon oil, etc. Yield effect

Active Publication Date: 2020-02-07
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 process for biomass secondary conversion to produce light oil without 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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  • Process for producing light oil through second-stage conversion of biomass
  • Process for producing light oil through second-stage conversion of biomass
  • Process for producing light oil through second-stage conversion of biomass

Examples

Experimental program
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Effect test

Embodiment 1

[0088] This embodiment provides a process for secondary conversion of biomass to produce light oil, comprising the following steps:

[0089] Preparation of biomass slurry:

[0090] 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;

[0091] 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 ;

[0092] The compressed and molded straw is pulverized again with a jet mill, passed through a 100-mesh sieve to obtain straw powder, and 100 kg of straw powder is weighed and mixed with a catalyst to obtain a mixed powder;

[0093] Mix 80 kg of waste lubricating oil and mixed powder with 8 kg of water, and use a colloid mill for grinding and pulping. The grinding and pulping time is 15 minutes to obtain biomass slurry.

[0094] The catalyst added in the slurry is an iro...

Embodiment 2

[0111] This embodiment provides a process for secondary conversion of biomass to produce light oil, comprising the following steps:

[0112] Preparation of biomass slurry:

[0113] 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;

[0114] 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 ;

[0115] The compressed and molded straw is pulverized again with a jet mill, and passed through an 80-mesh sieve to obtain straw powder;

[0116] 100kg of washing oil, 100kg of straw powder, catalyst and 3kg of water were mixed, and a colloid mill was used for grinding and pulping. The grinding and pulping time was 8 minutes to obtain a biomass slurry.

[0117] The catalyst added in the slurry is an iron-based catalyst with a content of 1 wt%, and the average particle dia...

Embodiment 3

[0136] This embodiment provides a process for secondary conversion of biomass to produce light oil, comprising the following steps:

[0137] Preparation of biomass slurry:

[0138] Collect red algae, air-dry until its water content is lower than 20wt%, and crush to a particle size of 0.2 μm-5cm;

[0139] 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 ;

[0140] The compressed red algae is pulverized again with a jet mill, and passed through a 100-mesh sieve to obtain red algae powder;

[0141] Take 40kg of pulverized red algae powder, 50kg of waste engine oil and 5kg of water, mix them, grind and make pulp for 12 minutes, and obtain biomass slurry.

[0142] 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.

[0143] Iron catalyst:

[0144...

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Abstract

The invention belongs to the technical field of biomass utilization, energy and chemical engineering, and particularly relates to a process for producing light oil through second-stage conversion of biomass. According to the conversion process, at least one of an iron oxide compound, a desulfurization waste agent of the iron oxide compound or regenerated matter of the desulfurization waste agent of the iron oxide compound is adopted as a catalyst, aqueous slurry is adopted, and meanwhile the molar ratio of the iron element to the sulfur element in a reaction system is controlled; it is found that carbonylation can be utilized effectively to block free radical polycondensation of organic matter in the presence of CO in the cracking process, conversion of CO and water is realized through hydrogenation by using active hydrogen, and in the conversion reaction, the organic matter, especially biomass solid, can be directly subjected to the conversion reaction without dehydration; and water can be added into biomass liquid or mineral oil, the liquefaction yield is increased, the calorific value of prepared oil products can also be increased, and a large amount of wastewater is not generated after the conversion reaction is finished.

Description

technical field [0001] The invention belongs to the technical fields of biomass utilization, energy and chemical industry, and in particular relates to a process for producing light oil through secondary conversion 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 o...

Claims

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Application Information

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IPC IPC(8): C10G1/02C10G1/00
CPCC10G1/002C10G1/02C10G2300/1011
Inventor 林科郭立新
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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