August 2010

Special Report: Fluid Flow and Rotating Equipment

Valve design reduces costs and increases safety for US refineries

The goals were achieved by using alloys with superior corrosion resistance

Johnson, R. D., Lee, B., Flowserve Flow Control Division

In the 1980s and early 1990s, methyl tertiary butyl ether (MTBE) was seen as an economical blending component that would eventually replace processes like hydrofluoric (HF) acid catalyzed alkylation (Fig. 1). However, MTBE was eventually banned in the US due to public health concerns after the chemical compound was detected in groundwater. As a result, refineries shifted their focus from MTBE back to established processes like HF alkylation to continue to produce high-quality gasoline. Fig. 1. The task force’s findings were used to develop a superior HF alkylation plug valve design. Features include the availability of an advanced stem seal design. The findings also le

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