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:
optimum excess o2 in biomass power 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.
: Robb Luther2015-1-6 · Boiler slagging and fouling are some of the major operations and maintenance factors that can negatively affect power plant can and has been measured to be well over 1,000F above optimum.
2013-5-2 · Improve Your Boiler’s Combustion Efficiency Combustion Efficiency Operating your boiler with an optimum amount of excess air will minimize heat loss up the stack and improve combustion efficiency. Combustion efficiency is a measure of how effectively the heat
Understanding the Impact of Excess Air. The optimum level of excess air will vary between furnaces and applications, but generally, excess air of 10-15% is an attainable, optimum goal while maintaining either the current input temperature or production output level, whichever is desired.
2019-3-30 · optimum excess air level for each type of fuel . In a bed stroke boiler used in biomass power plant source from O2 mass fraction for TBS Boiler in Existing Design This figure 5 indicates a recirculation of air flow n and unequal air flow distribution in the wind box segment to the burner in the existing system of the travelling
2015-3-2 · power generation. One primary factor affecting a boiler’s efficiency is excess air used in the fuel combustion. Boilers are most efficient when combustion air intake is only slightly higher than the minimum required for combustion. Maintaining low excess air levels at all firing rates provide significant fuel and cost savings.
Biomass Boiler Systems; Three Ways to Optimize Solid Fuel Combustion; An over-abundance of combustion air results in heat loss absorbed by the excess air, also decreasing efficiency. The goal here is to find a “sweet spot” for the over-fire air. In the same way that the under-fire air should modulate with the fuel feed rate, the amount
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2004-4-20 · Combustion and Co-combustion of Biomass: Fundamentals, Technologies, and Primary Measures for power production. Biomass combustion systems are available in the size range from a few kW control is needed to ensure optimum excess air in