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Names:__________________________CHE112P Worksheet 5:_________ Sec:_____ Combustion of Solid Fuel

Problem Solvin

1! Coal from "entuck#$ has the follo%in ultimate anal#sis on a dr# basis$&ercent b# mass:

'ltimate Pro(imate )odi*ed

C 79.2% Moisture 3.0% C in VCM _____

H 5.7% FC 65.4% FC _____

O _____ VCM _____ Total H2O _____

N .5% !s" _____ Net H _____

# 0.6% N $ # _____

!s" 3.0% !s" _____

a. Co&lete t"e ta'le '( s"o)in* all +al+ulations.

'. ,- t"is +oal is 'urne )it" 30% e/+ess air +al+ulate t"e aount o- air -e.

+. Cal+ulate t"e air1-uel ratio on a ass 'asis.

2! + furnace burns coal containin ,!1 - )$ 2, - .C)$ /0 - FC$ 1!2 - N$ 1!- S and ! - ash! 3ts calori*c value is 02 )4k! 6etermine the - .C)$ Cand calori*c value lost in the refuse if it anal#7es:

a. 4. % VCM 2.6 % FC an 2.6 % as"

7/24/2019 Worksheet 5 Combustion of Solid Fuel

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'. 24 % FC an 76 % as"

+. 7.5 % VCM 29.2 % FC an 63.3 % as"

0! + burner uses Pittsburh coal anal#7in 1,! 1 - ash$ 2!1 - N and ,!0 - S!E(cess air is su&&lied dr# at 22 oC and 1 atm! 8he stack ases at 25oC$ 9/5mm H anal#7es !/5 - C2$ 1!1/ - C$ ;!2, - S2$ ;!5 - H2and !1/ -2!

a ra) t"e +o&lete ia*ra.

7/24/2019 Worksheet 5 Combustion of Solid Fuel

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' #&e+i-( t"e 'asis an t"e aount o- t"e s&e+ies aaila'le.

+ Cal+ulate t"e &er+ent e/+ess air.

Co&lete t"e ultiate anal(sis o- t"e +oal.

e Cal+ulate t"e 3air &er * +oal

- Cal+ulate t"e 3sta+ *as &er * +oal.