I D
× COMMENTARYCOVER STORYIN THE NEWSNEWSFRONTS
Optimized Mixing
Improved equipment and controls, as well as continuous mixing, improve…
CHEMENTATOR + Show More BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEENVIRONMENTAL MANAGEREQUIPMENT & SERVICESFOCUS
Focus on Analyzers
Raman spectroscopy capability with bioreactor platforms BioPAT Spectro (photo) is…
NEW PRODUCTS + Show More SHOW PREVIEWS
Show Preview-IFAT
IFAT (rescheduled for September 7–11, Munich, Germany; www.ifat.de) is the…

Comment PDF Water Treatment

Purifying Coke-Cooling Wastewater

By Zhi-shan Bai, Shang-Tung Tu and Hua-lin Wang,  East China University of Science and Technology |

The delayed coking process is a fundamental part of the petroleum refining and petrochemical industries, and is among the main technical means for transforming inexpensive heavy oil into more valuable, light-oil products. Delayed coking units are common in petroleum refineries, and the process has been developed significantly as a heavy oil processing method in many countries, including China and the U.S. Figure 1. Typical coke-cooling wastewater treatment system. 1–coke drum; 2–gravity settling pit; 3–cooling tower; 4–hot coke-cooling water pump; 5–water storage tank; 6–high-pressure pump; 7–coke settling pit   The importance of delayed coking and its advanced development has not, however, eliminated certain disadvantages. The process uses high-sulfur heavy oil as its raw material, and requires a large amount of cooling water. This wastewater is referred to as “coke-cooling wastewater.” The large volume of wastewater produced by a delayed coking process at a typical petroleum refinery not only contains solid coke breeze (residue from screening heat-treated coke) and liquid heavy oil, but also contains organic and inorganic sulfides — all potential sources of environmental pollution. The problem…
Related Content
WEFTEC Show Preview
Presented by The Water Environment Federation (Alexandria, Va.; www.wef.org), the Weftec 2016 conference and exhibition will take place Sept. 24–28…

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
6 benefits to expect from a measurement partner
CoriolisMaster: The SmartSensor solution
The Big 6 flowmeter technologies: Where to use them and why
Improving chemical production processes with IIoT and AI technologies
New filtration technology for highly corrosive media

View More