A processing area containing small pipe furnaces, fractionators, and large
storage area containing
A packaging plant with large rectangular buildings and shipping facility
with transportation available.
Delayed coking. Products of the delayed coking operation include coke,
gas-oil, gasoline, and light gases.
In the delayed coking process, residues from primary distillation are
redistilled in a fractionator. The oily residuum then goes through a pipe furnace
where it is heated into a hot liquid vapor mixture.
This is then routed into a
tall tank called a coke drum where petroleum coke precipitates.
The vapors are withdrawn from the top of the coke drum and piped back
into the fractionator where light gases, gasoline, and gas-oil are separated.
The coke is then removed by means of a rotary drill and dropped into a
hopper or conveyor belt.
The gas-oil is fed to a cracking unit while the light
gases and gasoline are piped to a vapor recovery unit for separation.