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Pulp Paper
Pulp Paper Interview
Quiz 1
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Q.1
The Asplund process was developed aboutyears prior to TMP.
a) True
b) False
Q.2
Asplund process involves pre-steaming wood chips at temperature above the glass transition temperature of lignin.
a) True
b) False
Q.3
What is the pressure range at which the wood chips are pre-streamed?
a) 1300-1950 kPa
b) 550-950 kPa
c) 42-78 kPa
d) 1285-1950 kPa
Q.4
What is the steam pressure range at which the wood chips are pre-heated?
a) 50-200 degree celcius
b) 300-340 degree celcius
c) 1500-2000 degree celcius
d) 150-170 degree celcius
Q.5
The lignin is sufficiently soft that the separation occurs at __ lamella, and fibers are left with just a hard lignin surface.
a) Upper
b) Lower
c) Middle
d) Outskirt
Q.6
What is the other name of Masonite process?
a) Ignition process
b) Steam explosion
c) Mason process
d) TMP
Q.7
What is the temperature range at which chips are steamed in the Masonite process?
a) 1500-1690 degree Fahrenheit
b) 35-80 degree Fahrenheit
c) 155-480 degree Fahrenheit
d) 335-480 degree Fahrenheit
Q.8
What is the range of yield in the Masonite process?
a) 50-60%
b) 40-30%
c) 80-90%
d) 10-20%
Q.9
Chips are steamed well above the glass transition temperature of lignin, for one to two minutes until final pressure is on the order of __ MPascal.
a) 14-20
b) 4-7
c) 19-25
d) 3-4
Q.10
A mild explosion pulping process is being used at one mill to process __ paper.
a) Recycled
b) Un-used
c) Over-used
d) Bloated
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