The document discusses four types of boilers: high pressure boilers, Lamount boilers, Benson boilers, and Loeffler boilers. High pressure boilers can generate steam at pressures up to 210 bar and temperatures up to 6500C. Lamount boilers use a circulating pump to circulate water through tubes at higher rates than steam is evaporated to prevent overheating. Benson boilers raise the pressure to 221.2 bar to prevent steam bubble formation. Loeffler boilers generate most steam outside the tubes to prevent salt and sediment deposition inside the tubes.
Boilers are most important part of Chemical Industry. 99 % boilers used in Pakistan Chemical Industries are water tube boilers because of their high efficiency and safety. So we should have clear understanding about the boilers.
Boilers are most important part of Chemical Industry. 99 % boilers used in Pakistan Chemical Industries are water tube boilers because of their high efficiency and safety. So we should have clear understanding about the boilers.
Advantage and disadvantage of fire tube boilerjulia wu
to know the advantage and disadvantage of fire tube boiler will do much help for your boiler selection http://www.zgboilers.com/Case/1.4mw-gas-fired-hot-water-boiler-for-hotel.html
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Advantage and disadvantage of fire tube boilerjulia wu
to know the advantage and disadvantage of fire tube boiler will do much help for your boiler selection http://www.zgboilers.com/Case/1.4mw-gas-fired-hot-water-boiler-for-hotel.html
Classification of Steam Boilers based on different factors. Cochran, Babcock Wilcox, Lancashier etc. Accessories of steam boilers like economiser, superheater, steam separator, air preheater. Boiler Mountings like pressure gauges, feed check valve, steam stop valve, safety valves, water gauges, blowdown valves, scum valves, salinometer cocks etc.
Organising Principles to the Emerging Digital Workplace. Applied pragmatic rules, to increas quaility to information and data shared, with standards and proper resource descriptions. That improves findability on any device, anytime anywhere. Cases with Sharepoint and CMS
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2. HIGH PRESSURE BOILERS
• High pressure boilers are steam generating
units that generate steam of high pressure 85
bar
• Modern high pressure boilers can generate
steam with capacities 30 to 1600 ton s per hour
for a pressure 210 bar and maximum
temperature 6500C
3.
4. LAMOUNT BOILER
• Forced circulation high pressure water tube steam
boiler with centrifugal pump which is driven by
steam turbine using steam from boiler outlet.
• Pump circulates water 8 to 10 times than the mass
of steam evaporated to prevent the tubes from
being overheated
• Capacity 45 to 50 tones per hour superheated
steam at pressure of 130 bar : temperature 5400C
5. ACCESSORIES OF LAMOUNT BOILER
• Steam Separator Drum
• Circulating pump
• Distributor Header
• Evaporator
• Economiser
• Super heater
• Air preheater
6.
7. BENSON BOILER
• To overcome the formation of steam bubbles in contact
with tube surface. This affect the heat transmission from
the flue gases to water.
• Boiler pressure is raised to critical pressure of water
221.2 bar. At this pressure, the density of water and
steam is same , so there is no bubble formation
• Capacity 150 tones/hour. 210 bar: 6500C
8.
9. LOEFFLER BOILER
• To overcome the deposition of salt and sediment on the
inner surface of water tubes occurring in Lamount boiler.
• This deposition reduces the heat transfer rate and steam
generating capacity.
• Due to reduction in heat transfer rate, tubes get
overheated as it has high thermal resistance.
• Prevention of water flow in the boiler tubes made in
Loeffler boilers.
• Most of the steam generated outside by evaporating feed
water by using part of superheated steam coming from
boiler.
10. • Capacity of boiler 100 tones/hour of
superheated steam at pressure of 150 bar :
temperature 5000C
