Ascend Chocolate Bayou plant’s AN 7 unit releases HCN -- TCEQ

14 January 2013 18:14  [Source: ICIS news]

HOUSTON (ICIS)--An estimated 10lb (4.5kg) of hydrogen cyanide (HCN) was released to the atmosphere at Ascend Performance Material’s Chocolate Bayou facility on Sunday, according to a report filed with the Texas Commission on Environmental Quality (TCEQ), made available on Monday.

Ascend’s communications department was did not immediately return a request for comment on Monday.

The company’s AN 7 unit of its acrylonitrile (ACN) facility south of Houston, Texas, lost cooling water in the unit’s purification flush tank scrubber, causing the emission.

HCN is a recovered waste product from the manufacture of ACN. It is added to butadiene (BD) to create adiponitrile, which is used in the manufacture of nylon 6,6.

The cause of the loss of cooling water is under investigation.

According to the TCEQ report, the event took place shortly after midnight on Sunday and concluded about 38 minutes later.


By: Wesley Busch
+1 713 525 2653



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