1. Heat exchangers are the critical equipment in petroleum refinery process units, whose corrosion will have a great impact on the normal unit operation and product quality.

2. Boiler, the important equipment in petroleum refinery, supplies steam to four-component turbine.

3. The butenes are derived from petroleum refinery gases and are used in making butadiene, high-grade gasolines, and as sources of synthetic chemicals.

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4. Generated in a vast amount in petroleum refinery plants oily sludge cannot be safely disposed unless its oil content is reduced below a certain limit.

5. The feature of H_2S-bearing acid gas from petroleum refinery and difference from other materials that produces sulphuric acid are discussed.

6. With the expansion of petroleum refinery, the existing electric desalter needs to be revamped using licensed technology based upon existing vessel equipment to meet the expanded capacity requirement.

7. He has advanced training in petroleum refinery engineering and has worked in the petroleum industry in Fushun and Yanji.

8. Working status of mechanical seals influences directly the performance of equipment in the petroleum refinery.

9. As an optimization means , advanced process control should be popularized in other units of petroleum refinery.

10. A biological oxidation technology of isolated aeration was used to pretreat alkaline sewage from a petroleum refinery in an industrial scale.

11. A study was carried out to determine the effect of ammonium thiosulfate (ATS), a byproduct of petroleum refinery, on nitrification and to find its possible mechanism.

12. The metallic bellow expansion joints are the important parts on fluid catalytic cracking unit in petroleum refinery industry.

13. So many heat exchange equipment using softened water are applied to petroleum refinery industry, chemical industry, papermaking industry, textile industry and suchlike various industry.

14. An intricate network of the computer system runs this modern petroleum refinery.

15. This paper deals with the optimization and automation of line-up in piping systems of petroleum refinery.

16. In the next room, the underwater city of the future sits next to a lime-green illuminated model of a petroleum refinery.

17. Scheduling of production plan is one of the most kernel and crucial point in management of petroleum refinery and petrochemical plant.