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Mixed fuel coal water slurry entrained flow bed gasification system

A technology of gasification system and mixed fuel, which is applied in the gasification of granular/pulverized fuel, the production of combustible gas, and the special form of dry distillation. , unfavorable carbon gasification reaction and other problems, to achieve the effect of meeting large-scale utilization, improving carbon conversion rate, and improving thermal efficiency

Inactive Publication Date: 2010-09-22
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

However, the operation of the equipment is very complicated, and the moisture content of the biomass is high, so the overall gasification efficiency is not high
In addition, the temperature in the gasification stage is low, which is not conducive to the gasification reaction of carbon.
In addition, the two fuels are fed separately, and the high-temperature carbon bed is generated by coal combustion first, and then biomass and water vapor are added for gasification reaction, so it is difficult to achieve the synergistic effect of mixed gasification of biomass and coal

Method used

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  • Mixed fuel coal water slurry entrained flow bed gasification system
  • Mixed fuel coal water slurry entrained flow bed gasification system

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Embodiment Construction

[0019] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0020] Such as figure 1 As shown, this embodiment includes: a pretreatment module 1, a coal water slurry preparation module 2, an entrained bed coal water slurry gasifier 3, a purification module 4 and a separate oxygen supply module 5, wherein: the pretreatment module 1 receives the raw material to be treated The material is connected to the input end of the coal-water slurry preparation module 2, the coal-water slurry preparation module 2 receives the biocoke material output from the pretreatment module 1 and performs grinding and pulping treatment, and the output end of the coal-water slurry preparation module 2...

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Abstract

The invention belongs to the technical field of biological energy and discloses a mixed fuel coal water slurry entrained flow bed gasification system. The mixed fuel coal water slurry entrained flow bed gasification system comprises an entrained flow bed coal water slurry gasifier, a pretreatment module, a coal water slurry preparation module, a purification module and a separation oxygen supply module, wherein the pretreatment module receives biomass to be treated and is connected with the input end of the coal water slurry preparation module, the coal water slurry preparation module receives biological coke charges output by the pretreatment module and carries out milling and pulping treatment, the output end of the coal water slurry preparation module is connected with the entrained flow bed coal water slurry gasifier and outputs coal water slurry, the entrained flow bed coal water slurry gasifier is connected with the separation oxygen supply module to receive combustion-supporting gas and is also connected with the purification module to output combustion gas, and the purification module is connected with an air separator and outputs the combustion-supporting gas. The invention can realize large-scale utilization of the biomass, does not generate gasification tars and enhances the carbon conversion rate of coal gasification.

Description

technical field [0001] The invention relates to a device in the technical field of bioenergy, in particular to a coal-water slurry entrained gasification system using a mixed fuel of biomass and coal. Background technique [0002] Biomass is a kind of renewable energy, which contains less pollutants such as sulfur and nitrogen, and its thermochemical conversion will not cause additional carbon dioxide emissions. Compared with fossil fuels such as coal and petroleum, biomass has high moisture content, low ash content, low energy density, scattered resources and seasonal characteristics. The solid coke obtained by carbonization pretreatment of biomass has similar elemental composition to coal, but the alkali metal contained in biomass ash can catalyze the coal gasification reaction, thereby improving the carbon conversion rate and gasification efficiency, and the melting point of biomass ash Low, mixed gasification can lower the melting point of coal ash and is beneficial to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/56C10J3/72C10J3/84C10B53/02
Inventor 邓剑罗永浩陆方
Owner SHANGHAI JIAO TONG UNIV
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