Indian Institute of Technology Kharagpur (IIT-K) 2007 B.Tech Chemical Engineering Fuel technology - Question Paper
Indian Institute of Technology, Kharagpur Department of Chemical Engineering Mutfed-Spring Semester, 200
Subject: Fuel Technology Full marks: 40
Subject code: CH42014
Total No. of students: 12 Time: 3hrs.
sink tests. The washability tests data are given below:
|
Relative density fractions |
% float |
% ash in float |
|
-1.30 |
39.11 |
1.4 |
|
1.30-1.40 |
20.50 |
5.1 |
|
1.40-1.50 |
4.66 |
13.8 |
|
1.50-1.60 |
2.39 |
23.1 |
|
1.60-1.80 |
2.73 |
37.5 |
|
1.80-2.00 |
1.82 |
50.7 |
|
+2.00 |
28.79 |
79.5 |
Draw five different washability curves from the above data. If the coal is washed at a specific gravity of 1.55, what is likely to be the yield in clean coal and the % ash in it? From the nature of coal characteristics curve and + 0.1 specific gravity curve comment on the nature of washability of coal.
(12)
Part B
1. What is the characterization factor for a crude oil?
2
1
5
2. What do you mean by viscosity index?
3. Draw a flow diagram showing the treatment of crude in an atmospheric distillation unit.
4. Which statement is true and why?
a) Aromatics are desired component for gasoline.
b) Aromatics are desired component for diesel.
2
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Attachment: |
| Earning: Approval pending. |
