Product thermal capacity : 1-20 t/h Working pressure : 0.7-2 Mpa Available fuel : Nature gas, coke oven gas, biogas, methanol, liquid propane gas, diesel, heavy oil, light oil, crude oil, etc. Available industries : Heat supplying, chemical, food, textile, printing and dyeing, cigarettes and tobacco, fodder, pharmacy, building materials, brewery, rubber, hospital etc. Introduction:
esd ii boiler is a boiler shell type 3 passes wetback oil/gas fired boiler. After fuel is being atomized by burner, flame is full of the wave furnace and transfer heat via furnace wall, this is 1st pass; the high temperature smoke is collected in reversal chamber and then enters 2nd pass which is grooved tubes bundle area; after heat convection, air temperature gradually falls and goes to front smoke box and turn to 3rd pass, which is smooth tubes bundle area, and then enters chimney passing back smoke box and exhausted to the atmosphere.
Technical advantages Digitized manufacture
The key part such as material cutting, rolling, drilling are proceeded by advanced CNC machining process to reduce the assemble stress and extend boiler working lifetime.
The front and back smoke chamber plates are cut by CNC plasma cutting machine and looks tidy and beautiful.
Easy operation and maintenance
Fully automatically operating, with automatically adjustment and protection of burning, water level, temperature and steam pressure.
Longer working life
Smoke tube and tube sheet connection is expanded first to eliminate the gap between them, then adopt automatic argon arc welding to relief the stress and expand boilers working life.
Longitudinal and girth joint adopt advanced automatic submerged-arc welding for good welding quality. All longitudinal and girth joint will have 100% radiographic inspection.
Fin tube us ND steel or stainless-steel material which avoid low temperature corrosion.
Inspection procedure point is set up to guarantee the sequence of expanding and welding, avoid cracking of the tube sheet holes.
Less fuel consumption
High quality aluminum silicate fiber is used with fire clay insulation, to control the boiler body temperature below 45℃ to control heat lost.
Sufficient steam storage room and heating area makes boiler to generate high quality steam and high thermal power.
Condenser is added to reuse the waste heat of the exhausted smoke to increase feeding water’s temperature and reduce emission temperature, which can increase the thermal efficiency above 98% and save operating cost.
2013-11-30 · 10. Prior to lighting off a cold automatically fired auxiliary boiler, you should A. check and regulate the water level B. close the air cock once fires are lit C. blow down the gage glass D. crack the steam stop to assure protective steam flow Answer-A 11. Steam temperature control for the ESD-II boiler
INTRODUCTION2019-1-30 · ESD II & ESD III type boilers The later ESD II type boiler was similar in construction to the ESD I but used a control unit (an additional economiser) between the primary and secondary superheaters. Linked dampers directed the hot gases over the control unit or the superheater depending upon the superheat temperature required.
2016-4-12 · Determining & Testing Boiler Efficiency . for Commercial/Institutional . Packaged Boilers . Introduction [This paper pertains primarily to commercial/institutional packaged boilers. Although certain concepts contained in this paper may also be technically applied to other boiler types, this is not the purpose of this paper. Because this is a
: Raunekk2014-4-28 · Boiler pressure increase is ultimately limited by the scantling requirements,more importantly however, the energy stored within the steam is little increased due to the reduction in the latent heat. This design suffered from similar problems to the ESD II with regard to flaps and flap linkages susceptibility to corrosion. b, By use of multi
2019-5-16 · The original External Superheater 'D' (ESD) type of boiler used a primary and secondary superheater which is positioned after the main generating tube bank . The later ESD II type boiler was similar in construction to the ESD I but uses a control unit (an additional economiser) between the primary and secondary superheaters.
2015-9-10 · As a consequence, firetube boilers are typically small and are used primarily where boiler loads are relatively constant. Nearly all firetube boilers are sold as packaged units because of their relatively small size. A cast iron boiler is one in which combustion gases rise through a vertical heat exchanger and out through an exhaust duct.