High pressure heater
- Commodity name： High pressure heater
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Product Details
- 産(chǎn)品描述
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High-pressure heater is a device used to heat boiler feed water, usually used in thermal power plants or industrial boiler systems. It belongs to the closed heater in the thermal system, which uses the extraction steam of the steam turbine or other heat sources to increase the feed water temperature, thereby improving thermal efficiency and reducing fuel consumption.
1. The role of high-pressure heater
1.1. Improve thermal efficiency: reduce exhaust loss and improve the economy of steam cycle.
1.2. Reduce thermal stress: reduce the temperature change of boilers and pipelines, and improve equipment life.
1.3. Reduce emissions: reduce fuel consumption and help reduce the emission of carbon dioxide and other pollutants.
2. Structural composition
The high-pressure heater is mainly composed of the following parts:
2.1. Shell: The main component that bears pressure, usually made of carbon steel or stainless steel.
2.2. Heat exchange tube bundle: Internal heat exchange element, usually stainless steel tube or copper tube, to improve heat transfer efficiency.
2.3. Drain system: used to remove condensate and ensure the normal operation of the heater.
2.4. Safety device: including pressure relief valve, temperature sensor, etc., to ensure safe operation.
3. Working principle
High-pressure heaters generally use condensate heating, and the working process is as follows:
High-temperature steam (from turbine extraction or other heat sources) enters the tube side of the high-pressure heater.
The feed water enters the shell side from the other side and exchanges heat with the steam in the tube, and the temperature gradually increases.
The steam condenses into water during the heat exchange process and is discharged to the low-pressure heater or recovery system through the drain pipe.
The heated feed water enters the boiler to improve the efficiency of the thermal system.
4. Classification
4.1. According to pressure:
Low-pressure heater (<1.6MPa)
High-pressure heater (>1.6MPa, usually above 6.4MPa)
4.2. According to the structural form:
Vertical high-pressure heater
Horizontal high-pressure heater
4.3. According to the heat exchange method:
Surface high-pressure heater
Hybrid high-pressure heater
5. Application scenarios
5.1. Thermal power plant: used to increase the boiler feed water temperature and improve the thermal cycle efficiency.
5.2. Industrial boiler system: provide preheated water for large process equipment to reduce energy consumption.
5.3. Chemical, petroleum, and papermaking industries: production processes that require high-temperature and high-pressure hot water or steam.
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