Dust, Water and Coal The Good News and The Bad News Daniel Marshall 10/6/15.
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Transcript of Dust, Water and Coal The Good News and The Bad News Daniel Marshall 10/6/15.
Dust, Water and CoalThe Good News and The Bad News
Daniel Marshall10/6/15
Agenda
• The Problem (Dust Generation)• The Test• The Results• The Take-aways
The Problem
The Problem
The Test
The Test
The Results
0% 5% 10% 15% 20% 25% 30% 35% 40% 45%0.00%
0.20%
0.40%
0.60%
0.80%
1.00%
1.20%
1.40%
1.60%
1.80%
2.00%
Dust Produced at Different Moisture Contents (Hennepin)
Moisture Added (%)
Perc
ent o
f Coa
l Los
t as D
ust (
%)
The Results
The Results
0% 5% 10% 15% 20% 25% 30% 35% 40% 45%0.00%
0.20%
0.40%
0.60%
0.80%
1.00%
1.20%
1.40%
1.60%
1.80%
2.00%
Dust Produced at Different Moisture Contents (Hennepin)
Moisture Added (%)
Perc
ent o
f Coa
l Los
t as D
ust (
%)
Things of note…
Region of no effect
Region of no effect
The Results
0% 5% 10% 15% 20% 25% 30% 35% 40% 45%0.00%
0.20%
0.40%
0.60%
0.80%
1.00%
1.20%
1.40%
1.60%
1.80%
2.00%
Dust Produced at Different Moisture Contents (Hennepin)
Moisture Added (%)
Perc
ent o
f Coa
l Los
t as D
ust (
%)
Things of note…
As-receivedMoisture content
The Take-Aways
• In coal, dust = $
0% 5% 10% 15% 20% 25% 30% 35% 40% 45%$0.00
$10.00
$20.00
$30.00
$40.00
$50.00
$60.00
$70.00
$80.00
$90.00
Dust Produced at Different Moisture Contents (Hennepin)
Moisture Content (%)
Cost
of C
oal L
ost a
s Dus
t($/
hr)
The Take-Aways
• In coal, moisture = $
0% 5% 10% 15% 20% 25% 30% 35% 40% 45%$0.00
$50.00
$100.00
$150.00
$200.00
$250.00
Thermal Penalty (Hennepin)
Moisture Content (%)
Cost
of T
herm
al P
enal
ty ($
/hr)
The Take-Aways
• You must find the balance
0% 5% 10% 15% 20% 25% 30% 35% 40% 45%$0.00
$50.00
$100.00
$150.00
$200.00
$250.00
Comparison of Coal Lost to Thermal Penalty (Hennepin)
Lost Material Dollars ($/hr) Thermal Penalty Dollars ($/hr)
Moisture Content (%)
Coal
cost
($/h
our)
The Take-Aways• Change the way it loads, produce
less dust
0% 5% 10% 15% 20% 25% 30% 35% 40% 45%$0.00
$50.00
$100.00
$150.00
$200.00
$250.00
Thermal Penalty (Hennepin)
Moisture Content (%)
Cost
of T
herm
al P
enal
ty ($
/hr)
The Take-Aways• Add a surfactant, can prevent
dust, but use less water
0% 5% 10% 15% 20% 25% 30% 35% 40% 45%$0.00
$50.00
$100.00
$150.00
$200.00
$250.00
Thermal Penalty (Hennepin)
Moisture Content (%)
Cost
of T
herm
al P
enal
ty ($
/hr)
Agenda
• The Problem (Dust Generation)• The Test• The Results• The Take-aways
Questions
Questions?
Questions?
Questions?