AN IMPROVED TANGENTIALLY FIRED BOILER USING LOW-SULPHUR- CONTENT PULVERIZED COAL

摘要

The invention relates to an improved tangentially fired boiler using low-Sulphur- Content pulverized coal, the improvement is characterized in that a low-pressure economizer (7) is disposed between the air pre-heater (2) and the electrostatic precipitator (3) in the flow circuit to allow the feed water (8) from the low pressure heater (4) ingress the economizer (7) and exchange heat of the flue gas (9) picked-up from the circuit at a location after the air preheater (2) the feed water after heat exchange supplied back to the deaerator (5). [IN-KOL-2010-01446A]