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A method and system for producing synthesis gas from biomass

A technology for synthesis gas and biomass, which is applied in the manufacture of combustible gas, gasification process, petroleum industry, etc., can solve the problems of needing deashing and impurity treatment, increasing process flow, etc., so as to enhance the anti-deactivation ability, ensure the purity, The effect of improving usability

Active Publication Date: 2021-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method uses fluidized bed gasification, and the gas flow rate in the fluidized bed is fast, and it is easy to carry a large amount of particulate matter through the fine powder carbon layer, which requires subsequent deashing and impurity removal treatment, which increases the process flow.

Method used

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  • A method and system for producing synthesis gas from biomass
  • A method and system for producing synthesis gas from biomass
  • A method and system for producing synthesis gas from biomass

Examples

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preparation example Construction

[0061] The preparation of the catalyst used in the embodiment of the invention

[0062] According to the molar ratio of ferric nitrate, nickel nitrate and titanium chloride 1:0.5:0.1, weigh 1.0 mol of ferric nitrate, 0.5 mol of nickel nitrate and 0.1 mol of titanium chloride to prepare a 2L solution, and then mix the metal salt prepared above The solution is mixed evenly with citric acid and ethylene glycol according to the molar ratio (the molar ratio of metal ions, citric acid and ethylene glycol) 1:2.5:3.5, and then the temperature is raised to 80°C for stirring reaction, and as the water evaporates, a condensate is formed The gel state substance was vacuum dried for 24 hours, then calcined at 800°C for 20 hours, and then pulverized to 120µm after natural cooling to obtain the active component of the catalyst. Further according to the mass percentage content, the active component is 6wt%, olivine 69wt%, bio-tar 5wt%, water 20wt%, after the above-mentioned substances are ful...

Embodiment 1

[0065] The pretreated biomass raw material with a size of 10mm enters the microwave pyrolysis section through the biomass feeding bin, and stops feeding when the biomass raw material fills up to the range irradiated by the microwave pyrolysis section, and then sets the microwave power density of the microwave pyrolysis section 1×10 5 W / m 3 , when the temperature of the microwave pyrolysis section reaches 500°C, the biomass raw material (10kg / h) is re-introduced, and the biomass raw material is controlled to react in the microwave pyrolysis section for 10 minutes. After microwave pyrolysis treatment, the pyrolysis products of biomass are mainly pyrolysis volatile components and part of bio-semi-char, of which the pyrolysis volatile components account for 76wt%, and the non-condensable gases in the pyrolysis volatile components The content reaches 78%. Pyrolysis volatile components and bio-semi-coke are sent to the microwave gasification section, under the action of feeding wo...

Embodiment 2

[0067] The pretreated biomass raw material with a size of 10mm enters the microwave pyrolysis section through the biomass feeding bin, and stops feeding when the biomass raw material fills up to the range irradiated by the microwave pyrolysis section, and then sets the microwave power density of the microwave pyrolysis section 2×10 5 W / m 3 , when the temperature of the microwave pyrolysis section reaches 600°C, the biomass raw material (10kg / h) is re-introduced, and the biomass raw material is controlled to react in the microwave pyrolysis section for 10 minutes. After microwave pyrolysis treatment, the pyrolysis products of biomass are mainly pyrolysis volatile components and part of bio-semi-char, of which pyrolysis volatile components account for 80%, and non-condensable gases in pyrolysis volatile components The content reaches 85%. Pyrolysis volatile components and bio-semi-coke are sent to the microwave gasification section, under the action of feeding working gas and ...

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Abstract

The invention discloses a method and system for preparing synthesis gas from biomass, the method includes the following content: biomass raw materials are subjected to a pyrolysis reaction in a microwave pyrolysis section, and gaseous pyrolysis products and biocoke are obtained after the reaction; The gaseous pyrolysis products and biocoke are directly sent to the microwave gasification section for cracking and reforming reactions of the gaseous pyrolysis products to obtain crude biomass synthesis gas and solid residue; the crude biomass synthesis gas enters the synthesis gas purification section and contacts with the catalyst The reaction removes residual tar, low-carbon hydrocarbon impurities and solid particle dust to obtain purified biomass synthesis gas. The method not only has high synthesis gas yield, but also has good quality of synthesis gas and low content of tar and low-carbon hydrocarbons.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of biomass, and in particular relates to a method and a system for preparing synthesis gas by utilizing microwave radiation biomass. Background technique [0002] my country is rich in biomass resources, but the utilization methods are backward, and the energy utilization efficiency is low, resulting in a serious waste of biomass resources. Research and development of clean and efficient biomass utilization technology has become one of the important contents to solve the current shortage of petroleum resources, develop biomass energy economy and reduce environmental pollution. Biomass gasification technology can generate gaseous small molecular compounds mainly including hydrogen, carbon monoxide, carbon dioxide and methane. The whole process is relatively clean, and there is no cumbersome separation and purification problem. Hydrogen needed by industry can be obtained by pressure swing a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/64C10J3/84
CPCC10J3/64C10J3/84C10J2300/0906C10J2300/0909C10J2300/0916C10J2300/092C10J2300/0969C10J2300/0976C10J2300/0986C10J2300/1269C10J2300/1807
Inventor 王鑫宋永一张彪赵丽萍吴斯侃刘继华
Owner CHINA PETROLEUM & CHEM CORP
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