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Device and method for separating CO2 by circulating fluidized bed chemical looping-combustion of coal and combustible solid waste

A circulating fluidized bed and chemical chain combustion technology is applied in fluidized bed combustion equipment, combustion methods, and fuels burned in a molten state. , easy gasification, the effect of solving the problem of reaction matching

Inactive Publication Date: 2014-07-09
SOUTHEAST UNIV
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Problems solved by technology

[0003] Most of the existing combustible solid wastes are converted into fuels by thermochemical treatment (combustion, gasification and pyrolysis). The combustion products of these traditional methods are complex in composition, CO 2 Not easy to separate

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  • Device and method for separating CO2 by circulating fluidized bed chemical looping-combustion of coal and combustible solid waste
  • Device and method for separating CO2 by circulating fluidized bed chemical looping-combustion of coal and combustible solid waste

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Embodiment Construction

[0023] Refer to the following figure 1 To describe in detail the coal and combustible solid waste circulating fluidized bed chemical looping combustion separation CO of the present invention 2 method, the oxygen carrier is iron ore (the main component is Fe 2 o 3 ) as an example.

[0024]1) The air distribution plate arranged at the bottom of circulating fluidized bed solid waste reactor (hereinafter referred to as fuel reactor) 1 is the gasification agent inlet, and there are two inlets on the lower left side, the upper one is combustible solid waste inlet A, and the lower one is coal Particle entrance B. The right side is the primary return inlet. water vapor and CO 2 The mixture is used as the gasification agent and fluidization medium, respectively from the reactor gasification agent (water vapor) inlet D and the reactor gasification agent (CO 2 ) into the inlet E, carrying the combustible solid waste particles entering from the combustible solid waste inlet A, the ...

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Abstract

The invention discloses a device and method for separating CO2 by chemical looping combustion in a circulating fluidized bed of coal and combustible solid waste, which mainly includes three parts: a combustion reaction system, a separation system and an oxygen-carrying reaction system; it is characterized in that the combustion reaction system is Circulating fluidized bed fuel reactor (1); separation system includes primary inertial separator (2), primary inertial separator outlet (3), primary material leg (4), secondary cyclone separator (11), Outlet of the secondary cyclone separator (10) and secondary material leg (12); the oxygen-carrying reaction system includes a cross-flow moving bed air reactor (6), a fresh oxygen carrier particle feeder (5), and a J-shaped return material Valve (8) and inactivated oxygen carrier particle discharger (C); this method can match the reaction rate of the two to achieve high combustion efficiency, strong oxygen carrying capacity of the oxygen carrier, high concentration of separated CO2 and CO2 final capture rate is high and other effects.

Description

technical field [0001] The invention relates to a device and method for circulating fluidized bed chemical chain combustion of coal and solid waste, and belongs to the technical fields of coal combustion, resource utilization of solid waste and fluidized bed combustion. Background technique [0002] my country is currently the world's largest emitter of carbon dioxide. The pressure from environmental protection and international public opinion forces my country to find an efficient and reasonable CO 2 means of emission reduction. At the same time, my country is also the largest waste producing country in the world, and the year-on-year increase in solid waste production has seriously affected my country's environmental protection and ecological balance. more than half. Due to the limitations of technology and conditions at this stage, the comprehensive utilization rate of combustible solid waste in my country is still very low. The use of chemical chain combustion technolo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23C10/10F23C10/18
CPCY02E20/34
Inventor 邵应娟金保昇陈曦钟文琪黄亚继
Owner SOUTHEAST UNIV
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