Device and method for producing clean fuel gas and biomass charcoal through continuous biomass carbonization

A biomass charcoal and biomass technology, applied in the field of efficient and clean utilization of biomass, can solve the problems of single structure, high tar content and ineffective utilization, etc., and achieve the effects of short process flow, flexible and reliable production control, and high reliability.

Inactive Publication Date: 2016-05-04
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention provides a device and method for continuously carbonizing biomass to generate clean gas and biomass charcoal, which effectively solves the problems of single product structure and high tar content in gas that cannot be effectively utilized in traditional carbonization processes

Method used

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  • Device and method for producing clean fuel gas and biomass charcoal through continuous biomass carbonization
  • Device and method for producing clean fuel gas and biomass charcoal through continuous biomass carbonization
  • Device and method for producing clean fuel gas and biomass charcoal through continuous biomass carbonization

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Embodiment 1

[0037] Using molded rice straw as raw material, the device and method disclosed in the invention are used to continuously carbonize rice straw and catalytically crack tar in gas to produce clean gas and biomass charcoal. Part of the formed rice straw is transported to the biomass boiler for combustion through the belt conveyor. The furnace temperature of the biomass boiler is 1100°C, and a part of the formed rice straw is transported to the biomass drying unit through the belt conveyor. The temperature of the high-temperature flue gas produced by the combustion of the biomass boiler is 900°C. The high-temperature flue gas provides heat for the carbonization of biomass through the flue gas pipe on the outer wall of the carbonization furnace. The central temperature of the biomass carbonization furnace is 580°C. The tar in the gas produced by biomass carbonization undergoes catalytic cracking reaction in the reactor built in the high temperature zone of the biomass boiler, and th...

Embodiment 2

[0039]Using corn stalks as raw materials, the device and method disclosed in the invention are used to continuously carbonize corn stalks and catalytically crack tar in gas to produce clean gas and biomass charcoal. A part of the corn stalks is transported to the biomass boiler for combustion by the belt conveyor. The furnace temperature of the biomass boiler is 1040°C, and a part of the corn stalks are transported to the biomass drying unit by the belt conveyor. The temperature of the high-temperature flue gas produced by the combustion of the biomass boiler is 820°C. The high-temperature flue gas provides heat for the carbonization of biomass through the flue gas pipe on the outer wall of the carbonization furnace. The central temperature of the biomass carbonization furnace is 520°C. The tar in the gas produced by biomass carbonization undergoes catalytic cracking reaction in the reactor built in the high temperature zone of the biomass boiler, and the temperature of the cra...

Embodiment 3

[0041] Using wood chips as raw materials, the device and method disclosed by the invention are used to carry out continuous carbonization of wood chips and catalytic cracking of tar in gas to produce clean gas and biomass charcoal. Part of the sawdust is transported to the biomass boiler for combustion through the belt conveyor. The furnace temperature of the biomass boiler is 1150°C, and part of the sawdust is transported to the biomass carbonization unit through the belt conveyor. The temperature of the high-temperature flue gas produced by the combustion of the biomass boiler is 970°C. The high-temperature flue gas provides heat for the carbonization of biomass through the flue gas pipe on the outer wall of the carbonization furnace. The central temperature of the biomass carbonization furnace is 610°C. The tar in the gas produced by biomass carbonization undergoes catalytic cracking reaction in the reactor built in the high temperature zone of the biomass boiler, and the te...

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Abstract

The invention discloses a device and method for producing clean fuel gas and biomass charcoal through continuous biomass carbonization. The device mainly comprises a raw material conveying unit, a biomass boiler, a biomass drying unit, a biomass carbonization unit, a catalytic cracking unit, a biomass charcoal storage unit and a biomass gas storage unit. High temperature flue gas generated by the biomass boiler provides heat for the biomass carbonization unit, after sufficient heat exchange is conducted with the biomass carbonization unit, the flue gas provides heat for the biomass drying unit, dried biomass enters the biomass carbonization unit for carbonization, and biomass generated after carbonization enters the biomass charcoal storage unit; biomass fuel gas generated by the biomass carbonization unit enters the catalytic cracking unit to remove tar, and after entering the biomass drying unit to provide heat and conducting sufficient heat exchange with the biomass drying unit, clean fuel gas enters the biomass gas storage unit. The device is compact in process structure, reasonable in material and heat flow direction, environmentally friendly in product, great in controllability and suitable for energy using requirements of villages and towns in China.

Description

technical field [0001] The invention relates to efficient and clean utilization of biomass, in particular to a device and method for continuously carbonizing biomass to produce clean gas and biomass charcoal. technical background [0002] Due to the dwindling reserves of fossil energy, large fluctuations in oil prices, concerns about energy security and global warming, the development of clean and renewable energy is imminent, and the new energy industry is showing a trend of rapid growth. Biomass energy has attracted worldwide attention due to its renewable, low-pollution, wide-ranging distribution and abundant total amount, and will gradually become one of the important alternative energy sources in the future. my country is very rich in biomass resources, the total amount of resources is not less than 5 billion tons of dry matter per year, of which, there are more than 860 million tons of crop straw and agricultural by-products every year, realizing the efficient and clea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/00C10B53/02C10B57/00C10K1/34
CPCC10B53/00C10B53/02C10B57/00C10K1/34Y02E50/10Y02P20/584
Inventor 黄胜吴幼青吴诗勇高晋生
Owner EAST CHINA UNIV OF SCI & TECH
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