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Steam exhaust energy utilizing system of driving steam turbine of thermal power plant and thermal power unit

A technology for driving steam turbines and thermal power units is applied in the field of exhausted steam energy utilization systems to achieve the effects of reducing heat exchange area, simplifying the system and increasing the temperature of cold air

Active Publication Date: 2014-02-12
CHINA POWER ENG CONSULTING GRP CORP EAST CHINA ELECTRIC POWER DESIGN INST
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The exhaust steam cooling method of the existing drive steam turbine does not recover the energy in the exhaust steam regardless of wet cooling or air cooling

Method used

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  • Steam exhaust energy utilizing system of driving steam turbine of thermal power plant and thermal power unit
  • Steam exhaust energy utilizing system of driving steam turbine of thermal power plant and thermal power unit
  • Steam exhaust energy utilizing system of driving steam turbine of thermal power plant and thermal power unit

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Embodiment Construction

[0070] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but only to illustrate the essence of the technical solutions of the present invention. The same or similar parts in the figures are denoted by the same reference numerals.

[0071] Hereinafter, main technical terms of the present invention will be described.

[0072] Herein, the boiler mainly includes a boiler device. The boiler device is not specifically limited, as long as it does not limit the purpose of the present invention, it is known to those skilled in the art. π-type boilers (or pie-type boilers), tower boilers, inverted U-shaped boilers, etc. can be used, coal-fired boilers, oil-fired boilers, gas-fired boilers, etc.,...

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Abstract

The invention provides a steam exhaust energy utilizing system of a driving steam turbine of a thermal power plant and a thermal power unit. The steam exhaust energy utilizing system of the driving steam turbine comprises the driving steam turbine, an air preheater and a fan and also comprises a steam-water heat exchanger and an air-water heat exchanger which are formed into a steam-water-air heat exchange system; primary air and or secondary air of the air preheater inlet are or is heated by the steam exhaust of the driving steam turbine through the steam-water-air heat exchange system. According to the steam exhaust energy utilizing system of the driving steam turbine of the thermal power plant and the thermal power unit, the steam exhaust energy of the driving steam turbine is effectively utilized and accordingly the efficiency of the thermal power plant is improved, meanwhile the coal consumption is reduced, and emissions of pollutants are reduced.

Description

technical field [0001] The invention relates to the field of thermal power generation, in particular to a waste steam energy utilization system for driving a steam turbine in thermal power generation. Background technique [0002] With the development of the national economy, the society's demand for electricity is constantly increasing. For emerging developing countries that are undergoing industrialization and rapid economic development, such as China, the consumption of electricity and the installed capacity of power plants are increasing rapidly. As far as China is concerned, due to the limitation of its primary energy storage types and storage capacity, coal has been the main fuel for power plants in recent decades, accounting for more than 70%, and this trend will not occur in the foreseeable future. radical change. Although coal-fired power plants have advantages such as low cost and wide range of fuel sources for China, they have disadvantages such as low efficienc...

Claims

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Application Information

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IPC IPC(8): F01K17/02F27D17/00
CPCY02P10/25
Inventor 叶勇健申松林陈仁杰施刚夜
Owner CHINA POWER ENG CONSULTING GRP CORP EAST CHINA ELECTRIC POWER DESIGN INST
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