Waste Heat Recovery Boiler Design

Prior to the 2002 unplanned.

Waste heat recovery boiler design.

There are 4 basic requirements or inputs for calculating your waste heat from the. Bosch heat recovery systems self fired waste heat boilers ask price these hot water and steam boilers are conventionally fired boilers based on a 3 pass design with an additional separate integrated smoke tube pass for waste heat utilisation. You can arrange various types of chamer type wall panel superheater screen evaporator and economizer and it is designed to be horizontal or vertical type. Following is a typical waste heat recovery application involving operating conditions relating to a johnston boiler company whr boiler installation.

A robust sru waste heat boiler design 2012 brimstone sulfur symposium facilitated by brimstone sts limited page 4 of 21 discussion. This program is called had whrb which can design waste heat recovery boiler under waste gas condition. By considering these parameters we are going to design the economizer for waste heat recovery boiler. To produce steam or hot water based on the application requirements of the plant.

187 28 x 3 58 gal x 5 256 3 523 950 00 year in this example the johnston boiler company waste heat recovery boiler is capable of reducing fuel costs by as much as. Alternatively the boiler can simply be used to heat water or other kinds of fluid. Waste heat recovery boiler uses waste flue gases for steam production so this economizer is also work on these varying parameters like gas flow rate temperature variation pressure variation amount of ash content in flue gases. Yoshimine waste heat recovery boiler actual evaporation per 1000 nm3 h of gas quan tity gas tem peratu re diffe renc e of boiler out in let ac tual evaporation per gas quant ity 600kg h 500 400 300 200 100 0 200ºc 400ºc 600ºc 800ºc 1000ºc 1200ºc rem ar ks.

Total heat as steam sensible heat in feed water heat absorbed by water in boiler. A waste heat boiler of the water tube design is able to cope with much higher pressures of steam than a fire tube boiler but it is more difficult to construct and install. T 1 and t 2 temperature of hot gases before and after the w h. Significant tubesheet and tube entrance corrosion occurred throughout the life of the original whb design that may have resulted from many factors.

1 gas spe cific heat s hould. In good practice t 2 the temperature at which the flue gases leave the boiler may be reduced to ca 50 k above the temperature of the water in the boiler. Waste heat recovery boilers are designed to recover heat from waste flue gases from dg exhaust furnace exhaust kiln exhaust incinerator exhaust etc. Inside this type of boiler there are narrower tubes than inside a fire tube boiler and the tubes contain water instead of hot gases.

The steam can be used to drive turbines which produce electricity. Heat absorbed by water 0 95 vs t 1 t 2 mj s 1.