Green Energy
- Boiler (master Fuel Trip)
Steam Generator ( boiler ) is very important equipment at thermal power units , Boiler is the steam supply for the unit to rotate the turbine's rotor , hence produce electricity at Generator's stator. Boiler usually equipped with solar and Main...
- Boiler Steam System
Boiler STEAM SYSTEM -The boiler Steam system consists of SUPERHEATER, REHEATER AND BLOWDOWN SYSTEM 1) SUPERHEATER-The saturated steam from the drum flows into three stages of superheaters. Steam is superheated up to rated temperature through primary,...
- Boiler Water System
Boiler Water SYSTEM We talked before about HITACHI Boiler Air and Flue gas system, we mentioned the characteristics of the boiler Air and flue gas & Parameters of operating Steam and waterAt this article we will make a focus on Water system at boiler....
- Boiler (steam Generator)
Boiler (Steam Generator) -The boiler for 1,094 t/h MCR is Single Drum Radiant Natural Circulation Boiler “ELPASO” Type which has self-drainable heating surface. The unit is of pressurized furnace design with two regenerative air heaters,...
- Boiler Control Theory (feed Water Control)
Boiler Control Theory (Feed water Control) The feed water is controlled to keep the drum level . Water-level controls continuously monitor the level of water in a steam boiler in order to control the flow of feed water into the boiler and to protect...
Green Energy
BOILER STEAM PURITY
BOILER STEAM PURITY
- It is important that the steam leaving the boiler drum should be free from impurities which could be deposited in the superheater or the turbine.
- Such impurities may arise from two distinct causes, one being the property which steam at high temperature and pressure has of dissolving significant amounts of certain substances, notably SILICA & CAUSTIC SODA.
- the other cause is more familiar, namely priming or carry-over, where there is incomplete separation of the two phases in the drum and droplets of boiler water are entrained in the steam leaving the drum.
- Impurities caused by steam solubility can only be controlled by careful regulation of the boiler water analysis, particularly with regard to alkalinity and silica, and it is accepted that if the silica in steam doesn’t exceed 0.02ppm , it will cause no trouble by deposition in the superheater or the turbine.
- The concentration of silica in the boiler water which is in equilibrium with 0.02ppm in the saturated steam varies with the operating pressure as shown in the following figure.
- Boiler (master Fuel Trip)
Steam Generator ( boiler ) is very important equipment at thermal power units , Boiler is the steam supply for the unit to rotate the turbine's rotor , hence produce electricity at Generator's stator. Boiler usually equipped with solar and Main...
- Boiler Steam System
Boiler STEAM SYSTEM -The boiler Steam system consists of SUPERHEATER, REHEATER AND BLOWDOWN SYSTEM 1) SUPERHEATER-The saturated steam from the drum flows into three stages of superheaters. Steam is superheated up to rated temperature through primary,...
- Boiler Water System
Boiler Water SYSTEM We talked before about HITACHI Boiler Air and Flue gas system, we mentioned the characteristics of the boiler Air and flue gas & Parameters of operating Steam and waterAt this article we will make a focus on Water system at boiler....
- Boiler (steam Generator)
Boiler (Steam Generator) -The boiler for 1,094 t/h MCR is Single Drum Radiant Natural Circulation Boiler “ELPASO” Type which has self-drainable heating surface. The unit is of pressurized furnace design with two regenerative air heaters,...
- Boiler Control Theory (feed Water Control)
Boiler Control Theory (Feed water Control) The feed water is controlled to keep the drum level . Water-level controls continuously monitor the level of water in a steam boiler in order to control the flow of feed water into the boiler and to protect...