Device and method for co-producing carbon by coupling biomass direct combustion boiler with biomass gasification

A technology of biomass gas and biomass, which is applied in the direction of combustion method, transportation of non-flammable liquid/gas, combustion of block fuel and gaseous fuel, etc., which can solve the problem that the device cannot operate stably for a long time and the gasification of biomass is unstable , slagging and other issues, to achieve the effect of improving comprehensive utilization efficiency, realizing diversification and high value, and reducing carbon content

Inactive Publication Date: 2018-05-08
苏玉臻 +1
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  • Application Information

AI Technical Summary

Problems solved by technology

Biomass carbon produced by biomass gasification is of high value. It can not only be used as a raw material for high-quality carbon such as activated carbon and fast-burning carbon, but also can be used as a carbon-based fertilizer and soil improver because of its good microstructure and physical and chemical properties. and slow-release fertilizer raw materials; biomass gasification in my country mainly uses biomass with low moisture, high calorific value, high ash melting point, and good fluidity (such as wood chips, rice husks, etc.) Unstable gasification, slagging during the gasification process, etc., the device cannot run stably for a long time

Method used

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  • Device and method for co-producing carbon by coupling biomass direct combustion boiler with biomass gasification
  • Device and method for co-producing carbon by coupling biomass direct combustion boiler with biomass gasification
  • Device and method for co-producing carbon by coupling biomass direct combustion boiler with biomass gasification

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Effect test

Embodiment 1

[0035] Example 1: The raw materials are rice straw and bamboo chips, and the ratio of two kinds of biomass fixed carbon and ash is detected by raw material analyzer, wherein, the ratio of rice straw fixed carbon to ash is 0.91, and the ratio of bamboo chip fixed carbon to ash for 10.1. After screening, the rice straw is sent to the direct-fired boiler for combustion with the primary air with an air coefficient of 0.85. Bamboo slices are dried to 28% moisture after boiler exhaust gas drying, and then sent to the charcoal-gas cogeneration device for gasification, and bamboo charcoal about 15% of the raw material weight of bamboo chips is collected, and the charcoal-gas cogeneration device produces Biomass gas is sent to the direct-fired boiler for combustion. 60% of the biomass gas enters the furnace for combustion from the gas inlet in the lower part of the furnace, and 40% of the biomass gas enters the furnace for combustion from the gas inlet in the middle of the furnace. Th...

Embodiment 2

[0036] Embodiment 2: raw material is leaf, wheat straw, wood chip, utilizes raw material analyzer to detect the ratio of the fixed carbon of three kinds of biomass and ash content, wherein, the ratio of the fixed carbon of leaf, wheat straw, wood chip and ash content is respectively 0.8, 0.92, 9.5. After screening, the leaves and wheat stalks are fed into the direct-fired boiler and burned with primary air with an air coefficient of 0.9. After the wood chips are dried by the boiler exhaust gas, the water content is 25%, and then sent to the charcoal-gas cogeneration device for gasification, and wood chip charcoal about 14% of the raw material weight of bamboo chips is collected. The biomass produced by the charcoal-gas cogeneration device The gas is sent to the direct-fired boiler for combustion, 50% of the biomass gas enters the furnace for combustion from the gas inlet in the lower part of the furnace, and 50% of the biomass gas enters the furnace for combustion from the gas...

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Abstract

The invention provides a device and a method for co-producing carbon by coupling a biomass direct combustion boiler with biomass gasification. The device comprises a carbon gas co-production device; abiomass raw material storehouse is arranged on one side of the carbon gas co-production device; a raw material detection device is arranged in the biomass raw material storehouse; a biomass direct combustion boiler hearth is arranged on one side of the carbon gas co-production device; the outlet of biomass gas generated by the carbon gas co-production device is connected with a middle gas nozzleand a middle lower part gas nozzle of the biomass direct combustion boiler hearth; a carbon collecting device is arranged on the lower side of the carbon gas co-production device; and biomass carbon produced by the carbon gas co-production device is collected by the carbon collecting device. The biomass raw materials are divided into two kinds which are suitable for gasification and suitable for direct combustion correspondingly, so multi-stage utilization and value gradient utilization of the biomass are realized and diversification and high value of the biomass products are realized; and dueto substance and energy exchange between the carbon gas co-production device and the direct combustion boiler, the comprehensive utilization efficiency of the biomass is further improved.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of biomass energy, in particular to a device and method for coupling a biomass direct-fired boiler with biomass gasification and co-production of charcoal. Background technique [0002] my country is rich in biomass resources such as rice husks, straws, and wood chips. As a renewable, storable and transportable energy source, it has gradually attracted the attention of the government and scientific researchers. The development of biomass direct combustion technology is relatively mature. On December 1, 2006, the 30 MW biomass direct combustion power generation project of National Energy Shanxian County, which was put into operation, was the first biomass direct combustion power generation project in my country, which opened up the domestic large-scale biomass power generation project. The prelude to the development of the power generation industry. The direct-fired boiler has a w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/00C10J3/72C10J3/82F23C1/04F23L9/02
CPCC10J3/00C10J3/72C10J3/82C10J2300/0909C10J2300/0916F23C1/04F23L9/02
Inventor 苏玉臻张守军赵成武鲁万宝胡鹏
Owner 苏玉臻
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