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A method for producing substance gas by pyrolyzing Jerusalem artichoke dregs with microwave

A technology of pyrolysis of Jerusalem artichoke dregs, which can be used in biofuels, special dry distillation, petroleum industry, etc., and can solve problems such as high energy consumption

Active Publication Date: 2018-05-04
深圳市华利康纤生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the residues of Jerusalem artichoke and chicory have a high moisture content, and the traditional pyrolysis process for deep drying them consumes too much energy

Method used

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  • A method for producing substance gas by pyrolyzing Jerusalem artichoke dregs with microwave
  • A method for producing substance gas by pyrolyzing Jerusalem artichoke dregs with microwave
  • A method for producing substance gas by pyrolyzing Jerusalem artichoke dregs with microwave

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) drying the Jerusalem artichoke residue to reduce its moisture content to below 30%;

[0026] (2) dry Jerusalem artichoke residue and catalyzer are mixed to obtain reaction mixture according to mass ratio of 100:3, and described catalyzer is the mixture that the mass ratio of tin oxide, sodium carbonate, potassium carbonate is 1:4:1;

[0027] (3) Transfer the reaction mixture obtained in step (2) to a microwave reactor, the microwave power is 8kW, the pressure is 1.5MPa, the temperature is raised to 600°C at a speed of 200°C / min, and pyrolyzed for 3min;

[0028] (4) Biomass charcoal is separated from solid-phase products, and biomass gas is obtained from gas-phase products.

[0029] The obtained biochar and biogas were analyzed, and the analysis results are shown in Table 1 and Table 2. The calorific value of the obtained biomass gas was 29.7KJ / kg, and the yield of the biomass gas was 47%.

[0030] Table 1 Analysis results of biochar

[0031] Biochar

...

Embodiment 2

[0034] Example 2: Effect of pyrolysis temperature on the quality of biomass gas and biochar.

[0035] (1) drying the Jerusalem artichoke residue to reduce its moisture content to below 30%;

[0036] (2) dry Jerusalem artichoke residue and catalyzer are mixed to obtain reaction mixture according to mass ratio of 100:0.1, and described catalyzer is the mixture that the mass ratio of tin oxide, sodium carbonate, potassium carbonate is 1:4:1;

[0037] (3) Transfer the reaction mixture obtained in step (2) to a microwave reactor, the microwave power is 8kW, the pressure is 1.5MPa, the temperature is raised to 550°C at a speed of 200°C / min, and pyrolyzed for 5min;

[0038] (4) Biomass charcoal is separated from solid-phase products, and biomass gas is obtained from gas-phase products.

[0039] The obtained biochar and biogas were analyzed, and the analysis results are shown in Table 3-Table 5.

[0040] Table 3 Analysis results of biochar

[0041] Pyrolysis temperature

...

Embodiment 3

[0047] Example 3: Effect of pyrolysis time on the quality of biomass gas and biochar.

[0048] (1) drying the Jerusalem artichoke residue to reduce its moisture content to below 30%;

[0049] (2) dry Jerusalem artichoke residue and catalyzer are mixed to obtain reaction mixture according to mass ratio 100:0.5, and described catalyzer is the mixture that the mass ratio of tin oxide, sodium carbonate, potassium carbonate is 1:4:1;

[0050] (3) Transfer the reaction mixture obtained in step (2) to a microwave reactor, the microwave power is 8kW, the pressure is 1.5MPa, the temperature is raised to 620°C at a speed of 200°C / min, and the pyrolysis is performed for 0.5-15min;

[0051] (4) Biomass charcoal is separated from solid-phase products, and biomass gas is obtained from gas-phase products.

[0052] The obtained biochar and biogas were analyzed, and the analysis results are shown in Table 6-Table 8.

[0053] Table 6 Biochar analysis results

[0054] Pyrolysis time ...

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Abstract

The present invention discloses a method for producing biomass gas by microwave pyrolysis of Jerusalem artichoke slags. The method comprises the steps of: (1) drying the Jerusalem artichoke slags; (2) mixing the dried Jerusalem artichoke slags with a catalyst to obtain a reaction mixture, wherein the catalyst is a mixture of tin oxide, sodium carbonate and potassium carbonate; (3) transporting the reaction mixture obtained in the step (2) to a microwave reaction kettle, heating the reaction kettle at a speed of 200-300 DEG C / min to 550-680 DEG C, and performing pyrolyzation for 0.5-15 minutes; and (4) separating biomass carbon from solid products and separating the biomass ga from gas products. In the obtained biomass gas, the content of CH4 reaches over 75%, and the obtained biomass carbon can be directly used as a raw material for preparing active carbon. The method has a relatively huge industrial application prospect.

Description

technical field [0001] The invention belongs to the technical field of biomass energy, and in particular relates to a method for generating material gas by pyrolyzing Jerusalem artichoke dregs with microwaves. Background technique [0002] With the rapid development of the world economy, the consumption rate of energy resources is also increasing rapidly, while traditional fossil energy resources such as coal, oil, and natural gas are increasingly depleted, and human beings urgently need to develop renewable energy resources to supplement and replace existing fossil energy. Biomass energy, as an important environment-friendly renewable energy, has been valued at home and abroad, and is regarded as the fourth largest energy after coal, oil and natural gas. [0003] Biomass pyrolysis gasification can convert biomass raw materials into gaseous fuels mainly composed of CO and H, which can be directly converted to realize the supply of gas, heat and electricity. At the same time...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B53/02C10B57/06C10B57/10
CPCY02E50/10
Inventor 杨云付杰轩黄振华
Owner 深圳市华利康纤生物科技有限公司