Device for separating carbon dioxide through chemical-looping combustion in coal pressurizing high-density recirculating fluidized bed

A circulating fluidized bed and chemical looping combustion technology, which is applied in fluidized bed combustion equipment, indirect carbon dioxide emission reduction, fuel burning in a molten state, etc., can solve problems that have not yet been obtained, increase the attainment rate, and improve the gasification reaction rate , the effect of improving combustion efficiency

Active Publication Date: 2011-06-08
SOUTHEAST UNIV
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Problems solved by technology

Since the combustion reaction rate of coal/oxygen carrier is different from the oxygen carrier reaction rate of oxygen carrier by 2 to 3 orders of magnitude, it is difficult for conventional systems to achieve an

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  • Device for separating carbon dioxide through chemical-looping combustion in coal pressurizing high-density recirculating fluidized bed
  • Device for separating carbon dioxide through chemical-looping combustion in coal pressurizing high-density recirculating fluidized bed

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Embodiment Construction

[0023] The device for separating carbon dioxide by chemical looping combustion of coal in a pressurized high-density circulating fluidized bed provided by the present invention includes a pressurized high-density circulating fluidized bed fuel reactor 1, a primary cyclone separator 2, a primary material leg 3, Fresh oxygen carrier particle feeder 4, cross-flow moving bed air reactor 5, grid plate 6, deactivated oxygen carrier particle discharger 7, primary return feeder 8, primary exhaust pipe 9, secondary The primary cyclone separator 10, the secondary exhaust pipe 11, the secondary material leg 12 and the secondary feeder 13.

[0024] The device for separating carbon dioxide by chemical looping combustion in a pressurized high-density circulating fluidized bed of coal consists of a two-stage circulation loop: the upper part of the pressurized high-density circulating fluidized bed fuel reactor 1 communicates with a primary cyclone separator 2, The lower part of the primary c...

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Abstract

The invention discloses a device for separating carbon dioxide through chemical-looping combustion in a coal pressurizing high-density recirculating fluidized bed. Gasification reaction is carried out on coal particles and a gasification agent in a pressurizing high-density recirculating fluidized bed fuel reactor 1; and a gasification product and an oxygen carrier returning back to the fuel reactor 1 performs redox reaction to generate CO2 and H2O. The device comprises the pressurizing high-density recirculating fluidized bed fuel reactor (1), a primary cyclone separator (2), a primary dipleg (3), a fresh oxygen carrier particle feeder (4), a cross flow moving bed air reactor (5), a grid plate (6), an inactivation oxygen carrier discharging device (7), a primary material returner (8), a primary exhaust pipe (9), a secondary cyclone separator (10), a secondary exhaust pipe (11), a secondary dipleg (12) and a secondary material returner (13). By using the device in the invention, the reaction matching problem caused by the quantity grade difference existing in combustion and the oxygen carrier reaction rate is solved, thus the combustion efficiency of the coal, the separated CO2 concentration and the final gathering rate of the CO2 are greatly improved.

Description

technical field [0001] The invention relates to a coal chemical looping combustion separation CO 2 The device belongs to the field of clean combustion and efficient utilization of fuel. technical background [0002] Carbon dioxide is the most influential greenhouse gas among many potential greenhouse gases. How to reduce carbon dioxide emission has become one of the main contents of human sustainable development in the future. Chemical Looping Combustion (CLC) is an internationally recognized CO2 with important prospects. 2 One of the emission reduction technologies. Its basic principle is that the fuel does not burn directly in contact with the air, but the combustion process is realized by the alternating reaction of the oxygen carrier between the two reactors: on the one hand, the oxygen carrier is used to separate the oxygen in the air in the air reactor. Oxygen, on the other hand, in the fuel reactor, the oxygen in the air is transferred to the fuel by the oxygen car...

Claims

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Application Information

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IPC IPC(8): F23C10/18
CPCY02E20/34
Inventor 金保昇钟文琪王晓佳张勇殷上轶
Owner SOUTHEAST UNIV
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