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Biomass deep dehydration carbonization continuous processing technology and device thereof

A technology of deep dehydration and treatment process, which is applied in the field of packaging, can solve the problems of low natural biomass charcoal output, low calorific value of combustible gas products, low production efficiency of carbonization system, etc., and achieve easy maintenance, adjustment, and improvement effect of concentration

Active Publication Date: 2007-03-14
WUHAN KAIDI ENG TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The generator only burns a part of biomass raw materials to provide heat for carbonization of other biomass raw materials, and there is no material stirring measure during the carbonization process. The lower layer of the carbonization reactor is prone to sticking due to local overheating. H produced by mixing 2 O.CO 2 Due to the low output of natural biomass charcoal, the calorific value of the combustible gas product in the carbonization process is not high, and the production efficiency of the carbonization system is low

Method used

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  • Biomass deep dehydration carbonization continuous processing technology and device thereof
  • Biomass deep dehydration carbonization continuous processing technology and device thereof
  • Biomass deep dehydration carbonization continuous processing technology and device thereof

Examples

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Embodiment 1

[0044] Embodiment one: take willow branch as carbonization raw material. The collected willow branches are sorted and cleaned to remove soil and other impurities in the willow branch raw materials, and the raw materials are air-dried until the moisture content of the materials is in the range of 15-20%. The air-dried material is loaded into the cutter, and the material is cut into particles with a particle size of 5-80 mm. The cut material is directly input into the dryer, the motor of the dryer is started, the material is pushed under the action of the screw auger, and at the same time, the hot flue gas is passed into the dryer to heat the dryer, and the temperature of the dryer is kept at 130-150°C. The residence time in the dryer is 700-1000s. The dried material is directly input into the carbonizer, the motor of the carbonizer is started, and the material moves toward the outlet under the action of the stirring paddle, and at the same time, the hot flue gas is passed into...

Embodiment 2

[0045] Embodiment two: the raw material is changed into cotton stalks. The collected cotton stalks are sorted and cleaned to remove soil and other impurities in the cotton stalk raw materials. The raw material is air-dried until the moisture content of the material is in the range of 15-20%. The air-dried material is loaded into the cutter, and the material is cut into particles with a particle size of 5-80mm. Keep the temperature of the drier at 140-160°C, and the residence time of the material in the drier is 900-1200s. Keep the temperature of the carbonizer at 300-500°C, and the residence time of the material in the carbonizer is 200-800s. After testing, it is known that for every 1kg of cotton stalks fed, the moisture discharged from the dryer is about 0.1553kg, the charcoal produced is about 0.17kg, the ash is about 0.0263kg, and the pyrolysis gas produced is about 0.6483kg. Calculated by volume percentage, each component in the pyrolysis gas is: H 2 -8.11%, CO2 -10.9...

Embodiment 3

[0046] Embodiment three: the raw material is replaced by corn stalks. The collected corn stalks are sorted and cleaned to remove soil and other impurities in the corn stalks. The raw material is air-dried until the moisture content of the material is in the range of 15-20%. The air-dried material is loaded into the cutter, and the material is cut into particles with a particle size of 5-80mm. Keep the temperature of the drier at 120-140°C, and the residence time of the material in the drier is 600-1000s. Keep the temperature of the carbonizer at 300-500°C, and the residence time of the material in the carbonization process is 400-800s. According to the test, for every 1kg of corn stalks fed, the moisture discharged from the dryer is about 0.052kg, the charcoal produced is about 0.17kg, the ash is about 0.051kg, and the pyrolysis gas produced is about 0.7337kg. Calculated by volume percentage, each component in the pyrolysis gas is: H 2 -9.96%, CO 2 -8.05%, CO - 26.83%, H ...

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Abstract

Continuous biomass deeply dewatering and carbonizing process and apparatus are disclosed. The technological process includes the steps of deeply dewatering biomass to separate out water at 120-160 deg.c with external heat source, and carbonizing biomass at 300-500 deg.c to obtain biomass charcoal and pyrolytic fuel gas. The apparatus includes one drier and one carbonizing unit with material inlet connected to the outlet of the drier and sandwiched heat exchange cavity connected to that of the drier. Inside the carbonizing unit, there is also one gas assistant jetting device for controlling the reaction temperature in the carbonizing process. The present invention has high heat efficiency, high heat value of the pyrolytic gas and high biomass charcoal yield.

Description

technical field [0001] The invention belongs to the technical field of biomass energy, and relates to a method and equipment for preparing biomass charcoal with high energy density for high-temperature gasification and volatile combustible pyrolysis gas with high calorific value in gaseous form by using carbon-containing biomass raw materials, specifically Refers to a biomass deep dehydration carbonization continuous treatment process and its equipment, which is the pre-treatment equipment for high-temperature gasification of biomass to produce syngas. Background technique [0002] Biomass is a carbon-containing substance produced by plants through photosynthesis. It has abundant reserves and is a renewable energy source. In the case of dwindling oil resources, efficient use of renewable biomass energy is an urgent issue. Biomass gasification to produce various synthetic gases has always been a key research issue for engineers and technicians. [0003]...

Claims

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Application Information

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IPC IPC(8): C10B53/02
CPCY02E50/14Y02E50/10
Inventor 金沙杨张泽林冲吕锋杰张超杨占春宋侃李宏
Owner WUHAN KAIDI ENG TECH RES INST CO LTD
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