Thermal deaerator PRIMA-STEAM DASP

Deaeration is the final stage of feedwater treatment and plays a crucial role in preventing corrosion of thermal power equipment and pipelines. Thermal deaeration is the most effective and versatile method of removing all dissolved gases from water, which is widely used in the thermal power industry. The essence of thermal deaeration is to create conditions for dissolved gases to escape from water into the vapor-gas space of the deaerator and then be released into the atmosphere. The method is based on overheating of water above the boiling point, which corresponds to the pressure in the working area of the deaerator.

Water at a temperature of 102-104°C for atmospheric deaeration is fed into the deaerator, where it is crushed and the deaerated flow rate is increased several times. The deaerated stream is then fed to the cylindrical working surface of the deaerator, where the vapor-gas and water phases are separated by gravitational and dynamic forces. The deaerated water is fed to the feed (make-up) pump or to a storage tank (deaeration tank), and the vapor-gas mixture is discharged from the deaerator through the deaerator vapor outlet to the vapor cooler (heat exchanger) or to the atmosphere.
 

Dimensions of the deaeration unit of the DASP series

Configuration of technological and auxiliary equipment of the DASP series deaeration unit
 

BASIC :

К1 - Deaeration column - 1 pc.

К2 - Deaerated water tank - 1 pc.

- Safety device for protection against exceeding the permissible overpressure - 1 pc.

- Safety device for protection against exceeding the permissible vacuum - 1 pc.

- Safety device for protection against exceeding the permissible water level in the tank – 1 pc.

- Automatic steam pressure control unit in the deaerator - 1 pc.

- Automatic water temperature control unit in the deaerator - 1 pc.

- Unit for automatic maintenance of the level of veda in the deaerated water tank - 1 pc.

- Equipment for automatic control and indication of deaerator performance indicators.

КЗ - Control panel - Automatic control panel of the deaerator, based on an industrial controller. Complete with sensors.

ADDITIONAL :

К4 - Vapor cooler - 1 pc.

К5  - Separator of continuous blowing with utilizer - 1 pc.

– Thermal insulation

- Service platform

Thermal diagram of the deaeration unit of the DASP series

Purpose and sizes of nozzles of the deaeration unit of the DASP series