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Method for preparing chemical raw materials and liquid fuels from biomass

A technology of chemical raw materials and liquid fuels, which is applied in the preparation of liquid hydrocarbon mixtures, the petroleum industry, and hydrotreating processes, etc. It can solve problems such as harsh liquefaction conditions, high moisture content, and difficulties in biomass pulping, and achieve biomass pulping. Simple pulping process, good catalytic activity and easy operation

Active Publication Date: 2020-05-26
黑龙江省龙油石油化工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can convert biomass into oil products and chemical raw materials, but this method is difficult to pulp and has high moisture content; the liquefaction reaction conditions are harsh, and the pressure is between 13 and 25 MPa; its operation is intermittent, which limits its application
[0005] To sum up, in the process of converting biomass into chemical raw materials and liquid fuels, the existing technology at least has the disadvantages of discontinuous biomass conversion process and difficult biomass pulping

Method used

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  • Method for preparing chemical raw materials and liquid fuels from biomass
  • Method for preparing chemical raw materials and liquid fuels from biomass
  • Method for preparing chemical raw materials and liquid fuels from biomass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Step 1. Use straw as biomass raw material. After pre-drying and crushing the straw, enter the rotary cone pyrolysis reactor for pyrolysis reaction. The operating temperature of biomass pyrolysis is 500°C, and the heating rate is 500°C / min. Pyrolysis products including pyrolysis gas, bio-tar, pyrolysis water and pyrolysis semi-coke were obtained; the distribution of the obtained pyrolysis products is shown in Table 1. Among them, the elemental analysis of biotar is shown in Table 2.

[0037] Step 2. The pyrolysis semi-coke obtained in step 1 is used as a carrier to prepare the first hydrogenation catalyst. The pyrolysis semi-coke is pre-ground to 40-200 mesh, and iron oxyhydroxide is used as an active component to prepare a slurry bed hydrogenation catalyst. Wherein, the ratio of active components and pyrolysis semi-coke is 0.5:1, and it is ready for use;

[0038] Step 3, the biotar obtained in step 1, the first hydrogenation catalyst obtained in step 2, and hydrocarbon...

Embodiment 2

[0042] Step 1. Use the waste forest wood residue as biomass raw material, pre-dry and crush the waste forest wood residue, and then enter the rotary kiln pyrolysis reactor for pyrolysis reaction. The operating temperature of biomass pyrolysis is 300°C, and the heating rate is 100°C / min, to obtain pyrolysis products including pyrolysis gas, bio-tar, pyrolysis water and pyrolysis semi-coke; the distribution of the obtained pyrolysis products is shown in Table 1. Among them, the elemental analysis of biotar is shown in Table 2.

[0043] Step 2. The pyrolysis semi-coke obtained in step 1 is used as a carrier to prepare the first hydrogenation catalyst. The pyrolysis semi-coke is pre-ground to 40-200 mesh, and iron oxyhydroxide is used as an active component to prepare a slurry bed hydrogenation catalyst. Wherein, the ratio of active components and pyrolysis semi-coke is 0.6:1, and it is ready for use;

[0044] Step 3, the biotar obtained in step 1, the first hydrogenation cataly...

Embodiment 3

[0048] Step 1. Use municipal waste as biomass raw material. After sorting the municipal waste, take the recyclable waste for pre-drying and crushing, and then enter the fluidized bed pyrolysis reactor for pyrolysis reaction. The operating temperature of biomass pyrolysis is 600 °C, the heating rate was 500 °C / min, and pyrolysis products including pyrolysis gas, bio-tar, pyrolysis water and pyrolysis semi-coke were obtained; the distribution of the obtained pyrolysis products is shown in Table 1. Among them, the elemental analysis of biotar is shown in Table 2.

[0049] Step 2. The pyrolysis semi-coke obtained in step 1 is used as a carrier to prepare the first hydrogenation catalyst. The pyrolysis semi-coke is pre-ground to 40-200 mesh, and iron oxyhydroxide is used as an active component to prepare a slurry bed hydrogenation catalyst. Wherein, the ratio of active component and pyrolysis semi-coke is 0.6:1, standby; step 3, the biotar obtained in step 1, the first hydrogenatio...

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Abstract

The invention discloses a method for preparing a chemical raw material and a liquid fuel from biomass. The method comprises the following steps: 1, subjecting a biomass raw material to a pyrolysis reaction so as to obtain pyrolysis products including pyrolysis gas, biological tar, pyrolyzed water and pyrolyzed semicoke; 2, preparing a first hydrogenation catalyst with the obtained pyrolyzed semicoke as a carrier and putting the prepared first hydrogenation catalyst aside for subsequent usage; 3, preparing slurry from the obtained biological tar, the first hydrogenation catalyst and hydrocarbonoil, allowing the obtained slurry to enter a slurry bed hydrogenation reactor for a hydrogenation reaction so as to obtain hydrogenated bio-oil, subjecting the obtained hydrogenated bio-oil to distillation separation to obtain light bio-oil, water and tail oil, and circulating a part of the obtained tail oil to replace the hydrocarbon oil for preparation of the slurry; and 4, carrying out catalytic cracking on the obtained light bio-oil to obtain the chemical raw material and the liquid fuel. The biomass conversion method provided by the invention is simple in slurry preparation and can be continuously operated.

Description

technical field [0001] The invention relates to the field of application of biomass materials. Specifically, the present invention relates to a method for producing chemical raw materials and liquid fuels from biomass. Background technique [0002] Biomass includes plants, animals, microorganisms and their excretion and metabolites, and is the only material renewable resource. Biomass can be utilized from the perspective of renewable energy and directly burned for power generation; but from the perspective of resource utilization, biomass is a valuable renewable hydrocarbon resource that can be used as a supplement to oil and natural gas to produce chemical raw materials and liquid fuels. my country produces about 700 million tons of crop straw and about 250 million tons of forestry waste every year. If some of them are converted into liquid fuels and chemical raw materials, they can replace about 100 to 200 million tons of petroleum energy, which can greatly reduce my coun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/00C10G67/02
CPCC10G1/00C10G67/02C10G2300/1011
Inventor 曾宿主杨发新王庆明刘玉珍刘艳艳
Owner 黑龙江省龙油石油化工股份有限公司