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Supercritical carbon dioxide boiler system with high-safety hearth heating surface

A carbon dioxide and high-safety technology, which is applied in the direction of steam boilers, steam boiler accessories, steam boiler components, etc., can solve the problem of overheating of metal tube walls, reduce wall temperature, reduce average heat load, and avoid overheating. The effect of Wen's likelihood

Pending Publication Date: 2021-01-29
SHANGHAI BOILER WORKS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problem that the temperature of the metal pipe wall on the heating surface of the supercritical carbon dioxide boiler is overheated

Method used

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  • Supercritical carbon dioxide boiler system with high-safety hearth heating surface

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Embodiment Construction

[0018] In order to make the present invention more obvious and understandable, the preferred embodiments are described in detail as follows in conjunction with the accompanying drawings:

[0019] Such as figure 1 As shown, the present invention provides a supercritical carbon dioxide boiler system with a high-safety furnace heating surface. The boiler system includes a supercritical carbon dioxide boiler 1, a turbine 2, a high-temperature regenerator 3, a low-temperature regenerator 4, and a cooler 5 , compressor 6, recirculation fan 7, recirculation flue gas heater 8, burner 9, air preheater 10 and chimney 11.

[0020] The outlet of the heating surface of the supercritical carbon dioxide boiler 1 is connected to the inlet of the turbine 2, the outlet of the turbine 2 is connected to the inlet of the low-pressure side of the high-temperature regenerator 3, the outlet of the low-pressure side of the high-temperature regenerator 3 is connected to the inlet of the low-pressure si...

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Abstract

The invention relates to a supercritical carbon dioxide boiler system with a high-safety hearth heating surface, and belongs to the technical field of boiler equipment. The supercritical carbon dioxide boiler system comprises a supercritical carbon dioxide boiler, a turbine, a high-temperature heat regenerator, a low-temperature heat regenerator, a cooler, a compressor, a recirculation fan, a recirculation flue gas heater, a combustor, an air preheater and a chimney. By introducing flue gas recirculation, the overall temperature level of the flue gas in a hearth is lowered, so that the averageheat load and peak heat load of radiant heat transfer in the hearth are reduced, and the temperature of the hearth heating surface is lowered. The purpose of lowering the wall temperature of the hearth heating surface can be effectively achieved, so that the possibility of over-temperature of the boiler hearth heating surface is avoided, the service life of the boiler hearth heating surface is remarkably prolonged, and the working safety of the boiler hearth heating surface is improved.

Description

technical field [0001] The invention relates to a supercritical carbon dioxide boiler system with a high-safety furnace heating surface, belonging to the technical field of boiler equipment. Background technique [0002] Compared with the water-steam Rankine cycle, the supercritical carbon dioxide Brayton cycle has the characteristics of full-flow heat recovery and large heat recovery. The temperature of the inlet working fluid of the boiler is much higher than that of the water-steam Rankine cycle with the same parameters. It also leads to a higher temperature level of the working fluid on the heating surface of the supercritical carbon dioxide boiler furnace. According to data, in a thermal cycle of 25MPa and 600°C, the temperature of the inlet working fluid of the steam boiler is about 300°C, while the temperature of the inlet working fluid of the supercritical carbon dioxide boiler is about 450°C. In addition, due to the evaporation process in the water wall of the stea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B3/08F22B31/00F22B31/08F22B33/18F22B37/00
CPCF22B3/08F22B31/00F22B31/08F22B33/18F22B37/008
Inventor 闫凯杨涛乌晓江
Owner SHANGHAI BOILER WORKS
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