Indirect combustion apparatus and method for fuel gas circulation fluidized bed
A technology of circulating fluidized bed and combustion device, which is applied in the direction of fluidized bed combustion equipment, combustion method, fuel burned in molten state, etc., and can solve the problems of increasing power generation cost, difficulty in implementation, and high cost
Inactive Publication Date: 2005-07-13
SOUTHEAST UNIV
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Problems solved by technology
[0003] ●The separation of CO by molecular membrane 2 For separation and purification treatment, the separation efficiency is low and the cost is high. For example, a thermal power plant adopts this method to treat CO in flue gas 2 Separate processing will increase the cost of power generation by 20%, which is difficult to implement even in developed countries
[0004] ●Removal of CO by biological photosynthesis 2 , looking for high-efficiency biological algae for large-scale CO removal 2 , technical breakthrough is still needed
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[0017] The circulating fluidized bed indirect combustion device of the present invention is composed of three different fluidized fluidized beds connected in series, consisting of a circulating fluidized bed 1, a cyclone separator 2, a bubbling fluidized bed 3, and a moving fluidized bed 4 Composed in series. The upper part of the circulating fluidized bed 1 communicates with the cyclone separator 2, and the lower part of the cyclone separator 2 communicates with the bubbling fluidized bed 3 through the dipleg 3-2, and the bubbling fluidized bed 3 communicates with the moving fluidized bed 4 The mobile fluidized bed 4 communicates with the lower part of the circulating fluidized bed 1. The upper part of the bubbling fluidized bed 3 is the gas outlet D for carbon dioxide and water vapor. The upper part of the cyclone separator 2 is the outlet B for oxygen-poor air. The bottom of fluidized bed 1 is air inlet A, and the bottom of bubbling fluidized bed 3 and moving fluidized bed ...
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The invention is a kind of gas circular fluidized bed indirect combustion device and the method. It is a device and method for separating CO2 out of the combustion results in condition that there has no energy loss. The device is made up of circular fluidized bed, whirlwind separator, blister fluidized bed and moving fluidized bed in series connection. The top of the circular fluidized bed is connected with the whirlwind separator, the lower part of the whirlwind separator is connected with the blister fluidized bed through material leg, and the blister fluidized bed is connected with the moving fluidized bed. The moving fluidized bed is connected to the lower part of the circular fluidized bed. The upper art of the blister fluidized bed is the air outlet of carbon dioxide and steam, the top of the whirlwind separator is oxygen-poor air outlet, the bottom of the circular fluidized bed is the air inlet, the bottom of the blister fluidized bed and the moving fluidized bed are gas inlets.
Description
technical field [0001] The invention is a combustion method of gas fuel, specifically a device and method for realizing indirect combustion of gas fuel and separation of carbon dioxide. Background technique [0002] carbon dioxide (CO 2 ) is the most influential greenhouse gas among many potential greenhouse gases, how to reduce CO emissions 2 It has become one of the main contents of the sustainable development of mankind in the future. The conventional combustion technology is that the fuel is burned directly in contact with the air, and the CO in the generated flue gas 2 10-20%, CO 2 The follow-up treatment (concentration and purification) cost is too high, and the following methods are usually arranged: [0003] ●The separation of CO by molecular membrane 2 For separation and purification treatment, the separation efficiency is low and the cost is high. For example, a thermal power plant adopts this method to treat CO in flue gas 2 Separate ...
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IPC IPC(8): F23C10/00F23J15/06
CPCY02E20/32
Inventor 沈来宏
Owner SOUTHEAST UNIV