OCR Text |
Show Low NOx arrangement by combustion technology of boiler From the viewpoint of energy saving, raw material preservation, improvment of safety and reliability, labour saving, and low environmental pollution, boilers have been developed as illustrated in Fig.-2. Fig. - 2 Development of boiler (Boiler study No.l41,P9) (Steam quantity, Driving factors (Pressure(temperature) of development (Efficiency 1712 Newcommen 1769 Watt Combination of cast iron products (for low pressure only) Vertical type(mainly for small capacity) Original cylindrical boiler o Horizontal Cornish f/re tube boiler boiler 1803 water tube boiler (made of cast iron) Lancashire boiler Scotch boiler for ship Locomotive boiler "} Sharp slope A boiler Lenient slope boiler Fire tube boiler Once through boiler -O 8 - 7 - |