Power generation at EAF steel plant
Power generation at EAF steel plant
(OP)
I was wondering, is there any way to use the off gases that is vented to generate steam power?
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Power generation at EAF steel plant
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RE: Power generation at EAF steel plant
a) off gases are not combustible bu are hot ( > 500 F)==> use a heat recovery steam generator or recuperative air heater
b)off gases are combustible- blast furnace gas combustor with boiler used to be fairly common 30 yrs ago.
RE: Power generation at EAF steel plant
You are not the first to consider an EAF waste heat boiler here...
However, you must keep in mind that with regard to the list of nasty,corrosive, dust and ash laden gas streams; this is one of the worst.
In engineering, it always comes down to costs..
-MJC
RE: Power generation at EAF steel plant
rmw
RE: Power generation at EAF steel plant
RE: Power generation at EAF steel plant
Little chance for power though.
The low grade steam option would work if you needed it.
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RE: Power generation at EAF steel plant
Possible negatives, you might condense stuff out of the flue gas stream and keeping an air-to-air heat exchanger clean and operating at near max efficiency can be difficult.
Tom Moritz
RE: Power generation at EAF steel plant
rmw
RE: Power generation at EAF steel plant
Tom Moritz
RE: Power generation at EAF steel plant
The following thread & links therein may be useful:
removal of gases iin electric arc furnaces
thread330-121151
Also, this paper is possibly useful:
'A thermodynamic model of the EAF process for stainless steel,'Sander Arnout et al., pp. 1325-1337 in Proceedings of EMC 2005.
http://
It mostly deals with the molten metal & slag, but Figure 6 shows the CO/CO2 weight ratio as a function of process time. The ratio reaches about 212 at the end, so if you can figure out the quantity, can tell the fuel value.