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Poly-generation device and method for biomass pyrolysis

A biomass pyrolysis and polygeneration technology, applied in the direction of biofuel, direct heating carbonization, special form of carbonization, etc., can solve the problems of high cost of pyrolysis technology implementation, high requirements for raw material pretreatment, etc., and achieve crushing energy consumption Low, extremely crushable, condition-controlled effects

Active Publication Date: 2013-02-20
北京华电光大环境股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although most of the existing biomass pyrolysis polygeneration devices can effectively control the pyrolysis reaction conditions, they also require a high degree of pretreatment of raw materials, resulting in high implementation costs of pyrolysis technology

Method used

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  • Poly-generation device and method for biomass pyrolysis

Examples

Experimental program
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Effect test

Embodiment 1

[0026] like figure 1 As shown, the biomass pyrolysis polygeneration device of the present invention includes a hopper 1, a feed system 2, a crawler pyrolysis reactor 3, a gas-solid separation system 4, a pyrolysis gas condensation system 5, and a combustible gas burner 6. Combustible gas heat exchanger 7, coke pulverizer 8, coke cooling and discharging system 9. The outlet of the hopper 1 is connected to the inlet of the feed system 2, the outlet of the feed system 2 is connected to the fuel inlet of the crawler pyrolysis reactor 3, and the carrier gas inlet of the crawler pyrolysis reactor 3 is connected to the combustible gas heat exchanger 7 The gas outlet of the crawler pyrolysis reactor 3 is connected with the inlet of the coke pulverizer 8, the outlet of the coke pulverizer 8 is connected with the inlet of the coke cooling discharge system 9, and the heat of the crawler pyrolysis reactor 3 The decomposed gas outlet is connected to the inlet of the gas-solid separation s...

Embodiment 2

[0030]The device described in Example 1 was used to realize biomass pyrolysis polygeneration. Naturally air-dried sorghum stalks (with a moisture content of 9%) were cut into an average length of 0.5mm, and sent to the crawler pyrolysis reactor 3 through the hopper 1 and the feeding system 2, and the feeding rate was 500kg / h; The steel track of the pyrolysis reactor 3 has a length of 25m, a width of 1.5m, and a running speed of 25m / h (solid phase time is 60min). The pyrolysis temperature is 560kg / h, and the pyrolysis reaction temperature is 390°C; the high-temperature pyrolysis gas phase product passes through the two-stage cyclone separator 4 to remove the solid particles in it, and then enters the spray and falling film composite condenser 5, and after condensation, the liquid product and irreversible Condensing combustible gas, the production rate is 170kg / h and 120kg / h respectively; 680kg / h combustible gas is divided into two paths, of which the flow rate entering combusti...

Embodiment 3

[0032] The device described in Example 1 was used to realize biomass pyrolysis polygeneration. The natural air-dried original rice husk (moisture content is 8%) is sent into the crawler pyrolysis reactor 3 through the hopper 1 and the feed system 2, and the feed rate is 500kg / h; the steel of the crawler pyrolysis reactor 3 The length of the track is 25m, the width is 1.5m, and the running speed is 30m / h (solid phase time is 50min). The reaction temperature is 400°C; the high-temperature pyrolysis gas-phase product is passed through the two-stage cyclone separator 4 to remove the solid particles, and then enters the spray and falling film composite condenser 5, and after condensation, the liquid product and non-condensable combustible gas are obtained, and the yields are respectively 160kg / h and 110kg / h; 610kg / h combustible gas is split into two paths, of which the flow into combustible gas burner 6 is 110kg / h, and the flow into combustible gas heat exchanger 7 is 500kg / h, 110k...

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Abstract

The invention belongs to the filed of application of biomass energy and particularly relates to a poly-generation device and a method for biomass pyrolysis. The poly-generation device comprises a hopper, a feed system, a crawl type pyrolysis reactor, a gas-solid separation system, a pyrolytic gas condensation system, a combustible gas combustor, a combustible gas heat exchanger, a coke pulverizer and a coke cooling discharging system, wherein the crawl type pyrolysis reactor is composed of a steel track, a transmission shaft, a drive control system, an airtight reaction chamber and a heat retainer. Biomass raw materials enter the crawl type pyrolysis reactor through the hopper and the feed system and take pyrolytic reaction in an upper operating process of the steel track, liquid products and combustible gas are obtained after condensation of the pyrolystic gas, and solid coke is discharged after crushing and cooling. According to the device and the method, the combustible gas generated in the biomass pyrolysis process is taken as the heat source to provide heat required by the pyrolytic reaction so as to achieve a self-heating pyrolysis process, and the solid coke and the liquid products are co-generated.

Description

technical field [0001] The invention belongs to the field of utilization of biomass energy, and in particular relates to a device and method for pyrolysis polygeneration of biomass. Background technique [0002] Biomass pyrolysis is a thermochemical conversion process in which biomass is thermally decomposed to obtain solid-liquid-gas three-phase products under the condition of no oxygen or limited oxygen supply. By controlling the pyrolysis reaction conditions, such as temperature, pressure, residence time, etc., the yields of the three products, as well as the composition and structural characteristics of the products can be changed, so as to realize different biomass pyrolysis polygeneration processes. [0003] The core of biomass pyrolysis polygeneration technology lies in the development of the device. Different device structures directly determine its adaptability to raw materials and pyrolysis reaction conditions: including raw material moisture content, raw material ...

Claims

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Application Information

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IPC IPC(8): C10B53/02C10B57/00C10B57/10C10B49/02
CPCY02E50/14Y02E50/10
Inventor 董长青张旭明
Owner 北京华电光大环境股份有限公司
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