Two-section method for preparing synthetic gas with biomaterial

A technology for synthesis gas and biomass, which is applied in the production of combustible gas, granular/powder fuel gasification, energy input, etc., can solve problems such as tedious purification process, and achieve the effect of simplifying process, improving operation stability and facilitating control.

Inactive Publication Date: 2010-06-23
AMERICAN NEW OIL TECH CORP
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  • Summary
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

In most cases, bio-crude oil can only be used as a low-grade boiler fuel, and must go through a tedious purification process to obtain small amounts of useful chemicals

Method used

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  • Two-section method for preparing synthetic gas with biomaterial
  • Two-section method for preparing synthetic gas with biomaterial
  • Two-section method for preparing synthetic gas with biomaterial

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] combine figure 1 As shown, the biomass raw material is broken into particles below 2mm after being dried, and sent to the normal pressure fluidized bed rapid pyrolysis reactor (hereinafter referred to as the pyrolyzer) by the screw conveyor, and the temperature of the pyrolyzer is controlled at 500°C. After the steam product of the pyrolyzer is cooled to 40°C, the bio-crude oil and water leave the condenser in the form of liquid, and all the non-condensable gas is recycled back to the pyrolyzer as part of the fuel required by the pyrolyzer, and the bio-crude oil and water are decanted After being separated in the container, it enters the pulping tank. After the pyrolyzed solid product charcoal leaves the pyrolyzer, it is ground to less than 200 microns, and sent to a slurry tank to mix with bio-crude oil to prepare oil-charcoal slurry. The weight ratio of bio-crude oil to charcoal powder is 3.25:1. The bio-crude water content is 20%, the dry basis weight composition is...

Embodiment 2

[0026] It can be seen from Example 1 that the obtained charcoal can be used in whole to prepare oil-charcoal slurry, and can also be used in part to prepare oil-charcoal slurry, and partly can be used for other purposes, such as fuel for a pyrolyzer to maintain the pyrolysis temperature. combine figure 2 As shown, Embodiment 2 is an extension of Embodiment 1. All the charcoal prepared by pyrolysis of biomass is used for other purposes, and is not sent to the gasifier to prepare synthesis gas. For this case, the bio-crude oil can be directly pumped into the gasifier for gasification without pulping. Other than that, there is no difference from the process in Embodiment 1 in other respects.

[0027]A feature of the present invention is that biomass solids are converted into bio-crude oil liquid and charcoal by using atmospheric pressure methods such as rapid thermal cracking, and the oil-charcoal slurry prepared by suspending ground charcoal powder in bio-crude oil can be dire...

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Abstract

The invention relates to a two-section method for preparing synthetic gas with biomaterial, which belongs to the technical field of regenerative energy. The method is characterized in that the method comprises the following steps: firstly, thermally cracking the biomaterial to obtain charcoal and biological crude oil; secondly, feeding the biological crude oil or the oil-charcoal slurry prepared by adopting the charcoal and the biological crude oil into a gasification furnace through a delivery pump to prepare synthetic gas. In the method, the biological crude oil or the oil-charcoal slurry entering the gasification furnace has good flowing property and can be delivered through the pump, thereby solving the problems of delivery and quantitative control for solid biomaterial under high pressure in the prior art, helping improve the operation stability of the gasification furnace and facilitating the control of the product quality of the synthetic gas. The gasification furnace can adopt the ordinary air or oxygen enriched air rather than pure oxygen as the gasification agent, thereby saving the air separation equipment, simplifying the flow and reducing the operation cost. The form is especially attractive to small-scale gasification projects.

Description

【Technical field】 [0001] The invention relates to the technical field of renewable energy, in particular to a method for preparing synthesis gas from biomass raw materials such as straw, rice husk, sawdust and firewood. 【Background technique】 [0002] Biomass energy is one of the earliest energy sources used by human beings, and it is still widely used for burning heat in rural China. However, for a long time, due to economic constraints, the technology of converting biomass into electricity or fuel oil and other high-grade energy products has not been able to achieve industrialization. In recent years, due to the increasing shortage of fossil energy such as petroleum, especially the greenhouse effect caused by carbon dioxide emissions, which has seriously threatened people's living environment, biomass, a renewable energy that can achieve zero carbon dioxide emissions in a large cycle, has once again entered people's lives. vision. [0003] The technology of producing syn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/54C10J3/66
CPCY02P20/133
Inventor 詹晓东
Owner AMERICAN NEW OIL TECH CORP
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