LyondellBasell (LYB) on Friday reported the shutdown of a delayed coker unit that led to above-normal gas emissions at its refinery in Houston.

"Upset in [delayed coker] 737 Unit," the refinery said in a statement to the Texas Commission on Environmental Quality. "The unit was shut down."

It said the emissions of some 8,436 pounds of sulfur dioxide began Thursday evening and lasted more than five hours. Delayed coking and fluid coking are types of general coking, a refinery unit operation that upgrades material called bottoms from the atmospheric or vacuum distillation column into higher-value products.

The 264,000-barrel-a-day Houston refinery covers 700 acres.

 

Write to Dan Molinski at dan.molinski@wsj.com

 

(END) Dow Jones Newswires

May 03, 2019 13:23 ET (17:23 GMT)

Copyright (c) 2019 Dow Jones & Company, Inc.
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