Efficient low-carbon ultra-supercritical secondary reheating combined heat and power generation unit

A cogeneration unit, ultra-supercritical technology, applied in mechanical equipment, steam engine installations, machines/engines, etc., can solve problems such as difficulty in providing a huge amount of industrial steam and a large amount of heating steam.

Pending Publication Date: 2022-05-13
章礼道
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0037] The application has no steam extraction ports on the body of the ultra-high pressure cylinder, high and medium pressure cylinder, and medium and low pressure cylinder, so it is difficult to provide a huge a...

Method used

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  • Efficient low-carbon ultra-supercritical secondary reheating combined heat and power generation unit

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Embodiment 1

[0091] Combine now figure 1 , taking a 1400MW grade secondary reheat cogeneration steam turbine unit with design values ​​of main steam temperature / primary reheat steam temperature / secondary reheat steam temperature at 570°C / 620°C / 620°C as an example Preferred modes of carrying out the invention.

[0092] A high-efficiency and low-carbon ultra-supercritical secondary reheat cogeneration unit of the present invention includes: a boiler water wall and an economizer (1), a boiler superheater system (2), and a dual-flow single-side with additional heat recovery stage Ultra-high pressure cylinder (3), boiler primary reheater system (4), high and medium pressure cylinder with additional heating stages on both sides of the double flow (5), boiler secondary reheater system (6), medium and low pressure cylinder (7 ), heater (8), heater drainage pump (9), condenser (10), condensate pump (11), ultra-low temperature economizer (12), deaerator (13), electric feedwater pump ( 14), No. 4 h...

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Abstract

The invention discloses an efficient low-carbon ultra-supercritical secondary reheating cogeneration unit, and relates to a coal-fired power plant ultra-supercritical grade secondary reheating cogeneration unit which is provided with a double-flow ultrahigh pressure cylinder with an additional heat regeneration stage on one side and a double-flow high-medium pressure cylinder with an additional heat supply stage on two sides. The power generation heat consumption of the ultra-supercritical grade secondary reheating cogeneration unit can be remarkably reduced, greenhouse gas emission is remarkably reduced, a huge amount of industrial heat load is connected according to needs, and a large amount of heating heat load is connected according to seasonal needs; the condensing part is provided with an intelligent backpressure adjusting system for measuring the instant temperature of circulating water entering the condenser and adjusting the steam consumption of heating steam 1 and heating steam 2 in real time, so that the volume flow of the steam entering the tail blade of the medium-low pressure cylinder adapts to the backpressure which can be achieved by the circulating water temperature, the effective enthalpy drop of the tail blade of the medium-low pressure cylinder is maximized, and the energy consumption of the tail blade of the medium-low pressure cylinder is reduced. And meanwhile, the steam does not flow back at the blade root to scour the blade root.

Description

(1) Technical field: [0001] The high-efficiency and low-carbon ultra-supercritical secondary reheat cogeneration unit of the present invention relates to a double-flow ultra-high pressure cylinder with an additional heat recovery stage on one side, and a coal-fired high-medium pressure cylinder with an additional heat supply stage on both sides of the double-flow The ultra-supercritical double-reheat cogeneration unit of the power station can significantly increase the heat supply work ratio, significantly reduce the heat consumption of the ultra-supercritical double-reheat cogeneration unit for power generation, and significantly reduce greenhouse gas emissions. It needs to carry a huge amount of industrial heat load, and it needs to carry a large amount of heating heat load according to the season. (two) background technology: [0002] The design values ​​of the main steam temperature / primary reheat steam temperature / secondary reheat steam temperature of the typical turbin...

Claims

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Application Information

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IPC IPC(8): F01K7/38F01K7/42F01K7/22F01K11/02
CPCF01K7/38F01K7/42F01K7/22F01K11/02
Inventor 章礼道
Owner 章礼道
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