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.
WNS series horizontal internal combustion 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.
1. 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.
2.Easy operation and maintenance
Fully automatically operating, with automatically adjustment and protection of burning, water level, temperature and steam pressure.
3. 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.
4. 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.
Compare this to conventional boilers, where fuel efficiency is about 90-93%. Hence if one requires additional steam in cogeneration plants, the first place to look for is the HRSG. While planning cogeneration projects, engineers should see that the HRSG is designed as a fired HRSG, even though it could be more expensive.
In fact it can be shown that in a cogeneration plant, it makes more sense to generate additional steam in the HRSG rather than in the package boiler, as the efficiency of steam generation is only about 92 to 93 % (LHV) in a boiler versus 100 % in a HRSG. Fig 5a: HRSG temperature profiles in …
Improve HRSG efficiency. Boiler deposits of iron oxide and ammonium bisulfate on the flue gas side can lead to tube fouling of HRSGs. This reduces the heat transfer efficiency and increases back pressure on an adjoining gas turbine, which can lead to higher operating costs.
Boilers Heat Recovery Steam Generators (HRSG). Overview; Features; Delivery Records; Overview. A heat recovery steam generator (HRSG) is one of the major pieces of equipment in a gas turbine combined cycle power plant that boasts a high thermal efficiency and produces minimal CO 2 emissions. An HRSG is a kind of heat exchanger that recovers heat from the exhaust gases of a gas turbine to an
Boiler efficiency, in the simplest terms, represents the difference between the energy input and energy output. A typical boiler will consume many times the initial capital expense in fuel usage annually. Consequently, a difference of just a few percentage points in boiler efficiency between units can translate into substantial savings. The
Heat Recovery Steam Generators - HRSG,s are an important part of the Combined Cycle Plant. How is it different from the combustion boilers? Some of the main differences are given in this article. Heat Recovery Steam Generator's (HRSG's) are waste heat boilers. The steam turbine or a downstream process uses the steam. The term HRSG refers to the waste heat boiler in a Combined Cycle Power …
Just a modest improvement in boiler efficiency can result in significant fuel savings. A boiler, burner, and controls arrangement that is correctly matched to a facility’s heating needs is imperative. In most cases, improvement measures can be taken to substantially improve your current boiler’s efficiency. Some options may include:
schemes, even if including a conservative steam cycle can surpass the efficiency in some cases by several percentage points. Concerning HRSG, the traditional HRSG design is essentially based on manufacturer experience and heuristics in order to obtain convenient matching of temperatures drop, pressure drop and exchange surface area.
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