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Continuous biomass carbonization device and method for gas-solid classification pyrolysis differential classification

A technology of graded pyrolysis and biomass charcoal, which is used in biofuels, special forms of dry distillation, coke ovens, etc., can solve the problems of incomplete carbonization of internal biomass particles, excessive carbonization of surface biomass, and small heating area of ​​the furnace. Accelerate the carbonization rate, achieve good carbonization effect, and avoid the effect of incomplete carbonization

Active Publication Date: 2021-03-30
HUAZHONG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to address the above technical problems, to provide a continuous biomass carbonization device and method for gas-solid classification, pyrolysis and differential classification. Complete or excessive carbonization of surface biomass, poor release of pyrolysis gas, blockage of furnace, waste of calorific value in flue gas, low energy utilization rate, etc.

Method used

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  • Continuous biomass carbonization device and method for gas-solid classification pyrolysis differential classification
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  • Continuous biomass carbonization device and method for gas-solid classification pyrolysis differential classification

Examples

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Embodiment example 1

[0063] The raw material is straw, and the natural bulk density is 80kg / m 3 , the fast charcoal pyrolysis furnace can accommodate 223.2kg of straw, and the carbonization cycle is 4h, and the slow charcoal pyrolysis furnace can accommodate 237.6kg of straw, and the carbonization cycle is 5h. The speed of the feed auger is 80-85r / min, the speed of the slow carbon discharge auger conveyor is 10-15r / min, the speed of the fast carbon discharge auger conveyor is 13-18r / min, and the carbonization can be 2479.7 in 24 hours kg of straw, the carbon production rate of the fast charcoal thermal junction furnace is about 30%, and the charcoal yield of the slow charcoal pyrolysis furnace is about 35%. Part of the total heat of straw is used for combustion in the form of pyrolysis gas to provide carbonization heat, which is insufficient The energy is provided by external gas, which can realize continuous carbonization and discharging automation. The carbon production rate of fast carbon is ab...

Embodiment example 2

[0065] The raw material is chaff, the natural bulk density is 160kg / m 3 , the fast charcoal pyrolysis furnace can accommodate 446.4kg of chaff, the carbonization cycle is 4h, the slow charcoal pyrolysis furnace can accommodate 475.2kg of chaff, the carbonization cycle is 5h, the feeding auger speed is 40~45r / min, the slow speed The speed of the charcoal discharge auger conveyor is 13-18r / min, and the speed of the fast charcoal discharge auger conveyor is 15-20r / min. It can carbonize 4959kg of chaff after 24 hours of stable operation. The charcoal production rate of the fast charcoal pyrolysis furnace is about 35%, the charcoal production rate of the slow charcoal pyrolysis furnace is about 40%, part of the total heat energy of chaff is used for combustion in the form of pyrolysis gas to provide heat, and the insufficient energy is provided by gas, which can realize continuous charcoalization and automatic discharge , the charcoal production rate of fast charcoal is about 39kg / ...

Embodiment example 3

[0067] The raw material is biomass pellets with a natural bulk density of 300kg / m 3, The fast charcoal pyrolysis furnace can accommodate 837kg, the carbonization cycle is 4h, the slow charcoal pyrolysis furnace can accommodate 891kg, and the carbonization cycle is 5h. The speed of the feed auger is 40-45r / min, the speed of the slow carbon discharge auger conveyor is 25-30r / min, and the speed of the fast carbon discharge auger conveyor is 28-33r / min, which can carbonize 9299kg raw material in 24 hours. For material particles, the carbon production rate of the fast charcoal pyrolysis furnace is about 33%, and the charcoal production rate of the slow charcoal pyrolysis furnace is about 37%. Part of the total heat of biomass pellets is used for combustion to provide heat in the form of pyrolysis gas Other energy is provided by gas, which can realize continuous carbonization and discharging automation. The carbon production rate of fast carbon is about 69kg / h, the daily carbon prod...

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Abstract

The invention discloses a gas-solid grading pyrolysis differential grading continuous biomass carbonization device which comprises a feeding device, a feeding packing auger, a distributing device, acentral combustion chamber, a ventilation furnace wall, a rapid carbon pyrolysis hearth, a dispersion combustion chamber, a slow carbon pyrolysis hearth, a smoke heat preservation interlayer, an archbreaking device, a ventilation pipe, an air dispersion pipe, a slow carbon discharging packing auger conveyor, a rapid carbon discharging packing auger conveyor and a smoke heat preservation interlayer wall. Gas-solid grading is realized by adopting the ventilation furnace wall, energy of high-temperature pyrolysis gas is directly recycled in situ in the pyrolysis process, cyclic utilization of the energy is achieved, the heating area is increased, it is guaranteed that biomass is heated evenly, cooperation of self-heating, heat preservation and coke quality grading is guaranteed through differential pyrolysis controlled by the discharging speed, and gradient utilization of biomass pyrolysis carbonization is achieved to the maximum extent.

Description

technical field [0001] The invention belongs to the technical field of biomass energy conversion and utilization, and in particular relates to a continuous biomass carbonization device and method for gas-solid classification pyrolysis differential classification. [0002] technical background [0003] In recent years, with the depletion of fossil fuels and climate change caused by global greenhouse gas emissions, renewable resource utilization technologies have been vigorously developed to achieve energy conservation and emission reduction. The output of straw in the agricultural waste produced in our country is about 1 billion tons every year. The output is huge. Agricultural waste contains huge biomass resources. Biochar is easy to transport, store and widely used. It can be used to improve soil, Enhance the ability of soil to retain water and fertilizer. [0004] At present, in the pyrolysis carbonization treatment technology, there are generally high energy consumption, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B53/02
CPCC10B53/02Y02E50/10
Inventor 易宝军张旗张子杭樊啟洲袁巧霞孙正帅
Owner HUAZHONG AGRI UNIV
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