A diesel hydrotreater in an oil refinery

A diesel hydrotreater in an oil refinery

a) removes the sulphur and nitrogen compounds before the naphtha goes to the platformer
b) removes the water from the crude oil
c) only removes the water from the diesel
d) removes the sulphur and nitrogen compounds from the diesel before the diesel goes to storage
e) causes the heavy hydrocarbons to be transformed into lighter hydrocarbons






Answer: D

The purpose of the vacuum unit in an oil refinery is

The purpose of the vacuum unit in an oil refinery is

a) to receive the "reduced crude" and recover more gas oils by further distilling under high temperature and low pressure
b) to only take off the propane, butane, and light ends from the crude oil
c) the same as the fluid catalytic cracking unit
d) to remove the hydrogen sulphide and nitrogen from the naphtha
e) to remove the sulphur and nitrogen from the diesel





Answer: A

Which of the following is not a steam user in a meat processing plant?

Which of the following is not a steam user in a meat processing plant?

a) edible and inedible rendering plants
b) building heating
c) sanitation on the killing floor
d) steam tracing
e) blast freezer




Answer: E

The main disadvantage of a sawmill gangsaw is

The main disadvantage of a sawmill gangsaw is

a) the logs cannot be turned, nor the thickness varied
b) it produces a very small volume of smoothly sawed lumber
c) it produces a large volume of roughly sawed lumber
d) the logs can be turned, but the thickness cannot be varied
e) the thickness can be varied, but the logs cannot be turned

Answer: A