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Chemical looping combustion method capable of inhibiting oxygen carrier sintering and reducing heat loss

A technology of chemical chain combustion and oxygen carrier, which is applied in combustion methods, fuels burned in a molten state, fluidized bed combustion equipment, etc. The problem is to reduce the heat loss of exhaust smoke and inhibit surface sintering.

Inactive Publication Date: 2013-10-16
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The oxidation reaction between the reduced oxygen carrier and air in the air reactor is a strong exothermic reaction. The temperature of the oxidized oxygen carrier particles generated is very high, which will lead to sintering on the surface of the oxygen carrier particles. A dense surface layer is formed on the surface, which reduces or even inactivates the chemical reactivity of the oxygen carrier; in addition, the oxygen concentration in the air reactor exhaust is high, and the exhaust heat loss is large

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  • Chemical looping combustion method capable of inhibiting oxygen carrier sintering and reducing heat loss

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with the accompanying drawings.

[0011] as attached figure 1 As shown, a method for suppressing oxygen carrier sintering and reducing heat loss chemical looping combustion is completed according to the following steps. First, the reduced oxygen carrier is sent to the fluidized bed air reactor 1 through the feed pipe 12 Reactive combustion; then extract a part of the oxygen-poor flue gas from the oxygen-poor flue gas outlet 14 at the top of the cyclone separator 2, mix it with the air entering the air inlet 13, and pass it into the fluidized bed air reactor 1 together; The outlet discharges the regenerated oxygen carrier particles;

[0012] Wherein, the chemical looping combustion device for suppressing oxygen carrier sintering and reducing heat loss includes a fluid bed air reactor 1 and a cyclone separator 2; the lower part of the fluid air reactor 1 is connected with a feed pipe 12, and the fluid a...

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Abstract

The invention discloses a chemical looping combustion method capable of inhibiting oxygen carrier sintering and reducing heat loss. The method comprises the following steps of sending a reduced oxygen carrier into a fluidized bed air reactor through a feed pipe for reaction and combustion, extracting a part of oxygen-poor fume from an oxygen-poor fume outlet at the top of a cyclone separator, mixing with air entering from an air inlet, filling the oxygen-poor fume and the air into the fluidized bed air reactor, controlling the temperature in the fluidized bed air reactor at 900-1200 DEG C, and discharging regenerated oxygen carrier particles from an outlet of a dipleg. The method can inhibit the high sintering during a regeneration process of the oxygen carrier; the reactivity of the oxygen carrier is maintained; and the heat loss of the air reactor due to fume exhaustion is reduced simultaneously.

Description

technical field [0001] The invention relates to a method for oxidizing and regenerating a reduced oxygen carrier in chemical looping combustion, in particular to a method for inhibiting the sintering of oxygen carrier particles and reducing the heat loss of exhaust smoke. Background technique [0002] Chemical looping combustion is a new combustion technology. The fuel does not burn directly in contact with the air, but through the alternating reaction of the oxygen carrier between the air reactor (air reactor) and the fuel reactor (fuel reactor). The transfer of the chemical energy of the fuel is completed. The principle is: use metal oxides as the oxygen carrier, and the reduced metal oxygen carrier first contacts with the air in the air reactor for oxidation reaction to generate the metal carrier in the oxidized state. Oxygen, replace the oxygen in the air, and then the oxidized metal oxygen carrier enters the fuel reactor, contacts with the fuel, undergoes a reduction re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C10/00
CPCY02E20/34
Inventor 沈来宏宋涛顾海明
Owner SOUTHEAST UNIV
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