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Device and method for producing hydrogen by biomass

A biomass and hydrogen technology, applied in hydrogen production and other directions, can solve the problems of low direct utilization rate, low hydrogen production rate, secondary pollution, etc., achieve good environmental effects and economic benefits, simple process, and promote reaction Effect

Inactive Publication Date: 2012-06-27
JIANGSU SIFANG BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the energy conversion of biomass mixture materials including waste plastics and urban solid organic wastes, whether it is combustion and utilization of heat energy or pyrolysis to produce gas, there are problems such as low direct utilization rate, high cost, and secondary pollution. question
The Chinese Invention Patent Specification disclosed on March 12, 2008 a "device and method for catalytic hydrogen production using waste plastics" (application number: 200710045206.6, publication number: CN101139083). The lower part of the hydrogen production device is a fluidized bed gasification The upper part is the steam catalytic reforming hydrogen production section. The gasification section of the device must maintain a proper fluidization state to achieve high-efficiency gasification. The air and water vapor used in the process are used as gasification agents and raw materials for reforming hydrogen production. gas, hydrogen production rate is not high

Method used

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  • Device and method for producing hydrogen by biomass
  • Device and method for producing hydrogen by biomass
  • Device and method for producing hydrogen by biomass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The biomass straw is crushed to an average particle diameter of 10 mm, and then 5% of the biomass mass fraction is added with quicklime, and the raw material is fed from the biomass feed port 6 of the device 1 at a rate of 10 kg / h; the volume fraction is 80 The mixed gas of % water vapor and 20% nitrogen is the gasification agent, and the total volume flow rate of the gasification agent is 30 / h, the gasification agent is sprayed into the device 1 from the blowing pipe inlet 12 of the device 1 through the blowing pipe 4 from top to bottom; the biomass is gasified at 700°C, and the crude gas produced by gasification is mixed with the water vapor inlet 8 spraying The incoming water vapor enters the catalyst bed 10 through the dust screen 11, and steam reforming reaction occurs under the action of the catalyst. The catalyst is a KF104 methanol steam reforming catalyst; the average catalyst particle diameter is 0.45mm, and the dosage is 10kg; within 1 hour of reaction time...

Embodiment 2

[0021] The waste plastics are pulverized to an average particle diameter of 5mm, and then adding quicklime accounting for 2% of the biomass mass fraction, the raw material is sent in at a rate of 10kg / h from the biomass feed port 6 of the device 1; the volume fraction is 90% The mixed gas of water vapor and 10% nitrogen is the gasification agent, and the total volume flow rate of the gasification agent is 30 / h, the gasification agent is sprayed into the bottom of the device 1 from the blowing pipe inlet 12 of the device 1 through the blowing pipe 4 from top to bottom; the biomass is gasified at 600°C, and the crude gas produced by gasification is mixed with the water vapor inlet 8 spraying The incoming water vapor enters the catalyst bed 10 through the dust screen 11, and steam reforming reaction occurs under the action of the catalyst. The catalyst is KF104 methanol steam reforming catalyst; the average catalyst particle diameter is 0.45mm, and the dosage is 10kg; within 1 ...

Embodiment 3

[0023] Municipal solid organic waste is sorted to remove metal and inorganic impurities, then crushed to an average particle diameter of 5mm, and then add quicklime accounting for 5% of the biomass mass fraction, and the raw material is fed from the biomass feed port 6 of the device 1 at a rate of Feed at 10kg / h; the gasification agent is a mixture of water vapor and 15% nitrogen with a volume fraction of 85%, and the total volume flow rate of the gasification agent is 30 / h, the gasification agent is sprayed into the bottom of the device 1 from the blowing pipe inlet 12 of the device 1 through the blowing pipe 4 from top to bottom; the biomass is gasified at 500°C, and the crude gas produced by gasification is mixed with the water vapor inlet 8 spraying The incoming water vapor enters the catalyst bed 10 through the dust screen 11, and steam reforming reaction occurs under the action of the catalyst. The catalyst is KF104 methanol steam reforming catalyst; the average cataly...

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Abstract

The invention discloses a device and a method for producing hydrogen by biomass, belonging to the technical field of biomass energy chemical industry. The device comprises a gasification section, a reforming hydrogen production section and a blowing tube disposed in the device, wherein a biomass charge hole and a slag discharge hole are disposed on the bottom of the device; a vapour inlet is disposed on the upper part of the gasification section; a gas outlet is disposed on the upper part of the reforming hydrogen production section; and a catalyst bed layer and an ash-isolating net are disposed in the interior of the device. A hydrogen-enriched gas is obtained mainly by internally-circulated turbulent flow open-centre gasification biomass and fixed bed vapour catalytic reforming hydrogen production. The device has the advantages of being great in adaptability to raw materials and increased in the usage amount of vapour in raw materials due to independently-disposed vapour inlet. The method combines with internally-circulated turbulent flow open-centre gasification and fixed bed vapour catalytic reforming hydrogen production, so as to product hydrogen product with high additional value and increase the hydrogen production rate of catalytic reforming. The device and the method is wide in the source of biomass raw material, simple in hydrogen production method, very low in cost and capable of controlling the secondary pollutants possibly generated during biomass hydrogen production process.

Description

technical field [0001] The invention relates to a device and method for producing hydrogen by utilizing biomass, and belongs to the technical field of biomass energy chemical industry. Background technique [0002] At present, the consumption and utilization of biomass energy in the world ranks fourth after petroleum, coal and natural gas. Biomass can be regenerated and can be directly stored and transported. However, the cost of biomass utilization technology is relatively high, especially when it comes to waste plastics and municipal organic solid waste. The disposal of biomass has always been a problem in various countries in the world. How to use it Biomass utilization is profitable, and it is also widely concerned that it can be promoted and used on a large scale. The amount of organic solid waste generated in cities in my country is huge, and the pollution problem is becoming more and more prominent. In particular, the reasonable disposal of waste plastics has become ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/02
Inventor 段绪强李学林谢传玉常春梅闫海洲豆斌林高猛
Owner JIANGSU SIFANG BOILER
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