assembly
blue
breaking
built
business
chemical
chemistry
chimney
column
cracking
crude oil
diesel
factory
fuel
gas
gasoline
heat exchanger
heater
industrial
industry
kerosene
landscape
modern
nature
oil
petrochemical
petroleum
plant
polypropylene
power
primary
processing
production
project
pump
pumping
reagent
rectification
refinery
reforming
sky
steam
steel
supply
tank
tanks
technology
toxic
utilization
vapor