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External heating biomass pyrolysis gasification furnace and method for preparing charcoal by continuous pyrolysis gasification

A technology of pyrolysis gasification and biomass, which is applied in the direction of carbonization furnace, biofuel, coke cooling, etc., can solve the problems that affect the yield and quality of finished charcoal, the labor intensity of workers, and the loss of biomass raw materials, etc., to achieve The device occupies less land, is easy to operate, and has the effect of precise control of material balance

Inactive Publication Date: 2011-11-30
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems existing in the prior art that the pyrolysis gas combustion reaction is in contact with biomass raw materials, resulting in the loss of biomass raw materials and affecting the yield and quality of finished charcoal; intermittent operation of the device, labor-intensive workers; the entire system occupies a relatively large space Disadvantages, the present invention provides an external heating biomass pyrolysis gasification furnace and a method for preparing charcoal by continuous pyrolysis gasification, which can continuously and stably produce high-quality charcoal products

Method used

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  • External heating biomass pyrolysis gasification furnace and method for preparing charcoal by continuous pyrolysis gasification
  • External heating biomass pyrolysis gasification furnace and method for preparing charcoal by continuous pyrolysis gasification

Examples

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Effect test

Embodiment 1

[0047] An external heating biomass continuous pyrolysis gasification process. The 50±30 mm wood blocks are sent into the pyrolysis gasifier through the bin on the top of the pyrolysis gasifier. After preheating, the wood blocks enter the thermal In the pyrolysis section, the pyrolysis gas enters three independent combustion chambers through the gas overflow pipe on the furnace, and the combustion reaction temperature of the combustion chamber is controlled by precisely controlling the amount of air entering the combustion chamber, thereby precisely controlling the pyrolysis temperature to 750 °C. The tail gas after combustion reaction is recycled and emptied from the chimney, and the charcoal product after pyrolysis and dry distillation is discharged from the discharge port of the pyrolysis furnace after being cooled to 180°C.

[0048] The main technical parameters of charcoal products produced by an externally heated biomass continuous pyrolysis gasifier with an inner diameter...

Embodiment 2

[0058] An external heating biomass continuous pyrolysis gasification process. 0.5-5 mm wood chips are sent into the pyrolysis gasifier through the bin on the top of the pyrolysis gasifier. After preheating, the wood chips enter the pyrolysis and carbonization process. In the section, the pyrolysis gas enters three independent combustion chambers through the gas overflow pipe on the furnace, and the combustion reaction temperature of the combustion chamber is controlled by precisely controlling the amount of air entering the combustion chamber, so that the pyrolysis temperature is precisely controlled to 650°C. The tail gas after the combustion reaction is recycled and emptied from the chimney, and the charcoal product after pyrolysis and carbonization is cooled to 120°C and then discharged from the discharge port of the pyrolysis furnace.

[0059] The main technical parameters of charcoal products produced by an externally heated biomass continuous pyrolysis gasifier with an in...

Embodiment 3

[0069] A continuous pyrolysis and gasification process for externally heated biomass. The 1-10 mm fruit shells are sent into the pyrolysis gasification furnace through the bin on the top of the pyrolysis gasification furnace, and the wood chips enter the pyrolysis gasification furnace after preheating. In the dry distillation section, the pyrolysis gas enters three independent combustion chambers through the gas overflow pipe on the furnace, and the combustion reaction temperature of the combustion chamber is controlled by precisely controlling the amount of air entering the combustion chamber, thereby precisely controlling the pyrolysis temperature to 700°C. The tail gas after the combustion reaction is recycled and emptied from the chimney, and the charcoal product after pyrolysis and dry distillation is discharged from the discharge port of the pyrolysis furnace after being cooled to 170°C.

[0070] The main technical parameters of charcoal products produced by an externally...

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Abstract

The invention discloses an external heating type biomass pyrolysis gasification furnace and a method for preparing charcoal by continuous pyrolysis gasification. The pyrolysis gasification furnace is composed of a silo, a combustion chamber, a trough and a carbonized material cooling section. There is a silo on the trough, a carbonized material cooling section under the trough, and a carbonized material outlet in the carbonized material cooling section. , there is a biomass raw material inlet on the silo, an air inlet and an exhaust gas outlet on the combustion chamber, and three independent annular combustion chambers are arranged on the outer periphery of the trough from top to bottom. An air inlet and an exhaust gas outlet are respectively provided, and a gas overflow pipe is provided on the inner wall, and the gas overflow pipe communicates with the trough. The pyrolysis and dry distillation gas enters three independent annular combustion chambers respectively through the overflow pipe, and undergoes combustion reaction with air, and the heat energy generated is used to maintain the pyrolysis temperature of the biomass material layer. Using the heat energy provided by it, the biomass in the furnace is pyrolyzed and dry-distilled to decompose the dry distillation gas to obtain charcoal. The charcoal has high yield, good quality, and the device occupies less land.

Description

technical field [0001] The invention relates to a biomass pyrolysis gasification process and equipment, in particular to an external heating continuous pyrolysis gasification process and equipment for the purpose of producing charcoal products. [0002] Background technique [0003] Biomass pyrolysis is to decompose biomass raw materials by heat under the condition of isolating air or introducing a small amount of air to obtain pyrolysis carbonization gas and charcoal products, some of which are pyrolysis carbonization gas as the main product, and some are mainly charcoal Products, as raw materials for further deep processing into activated carbon products. There are great differences in the pyrolysis process and pyrolysis equipment used between the two. At present, domestic industrial-scale pyrolysis devices for the purpose of producing charcoal products are mostly intermittent operations, with low output and high labor intensity. The most important thing is that the pro...

Claims

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Application Information

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IPC IPC(8): C10B53/02C10B57/10C10B57/00C10B39/00C10B1/00
CPCY02E50/14Y02E50/10
Inventor 刘石彩李马胜邓先伦蒋剑春孙康边轶
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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