Piping

Creating opportunities for future fluid machinery experts

Bloch, H. P., Reliability/Equipment Editor

The state of understanding science and facts on one side and distinguishing these from anecdotes and often far-fetched opinions on the other side should be concerning to us. Institutions of higher learning can be disinclined to teach needed, applicable or actionable knowledge.

HRSG water/steam sampling: Do it right or face potential consequences

Buecker, B., ChemTreat, Inc.; Powalisz, J., Sentry Equipment Corp.

Many large industrial facilities—including refineries, and chemical and petrochemical plants—are increasingly turning to co-generation for process steam and power production.

The effects of highly corrosive fluids on valves and disasters that can be avoided

Welsford, G., ValveMan

Some of the highly corrosive fluids in the oil and gas industry contain the following compounds: carbon dioxide, hydrogen sulfide, chlorides and moisture.

Use a simple vapor equation for sizing two-phase pressure relief valves

Pressure relief valves (PRVs) protect process equipment from the hazards of excessive over-pressure.

Reliability: When to consider liquid-ring compressors

Bloch, H. P., Process Machinery Consulting

Liquid-ring compressors (FIG. 1) use the centrifugal whirling of a sealing liquid to create a series of piston-like water columns to trap gas or vapor between the impeller cells of a rotor installed eccentric to its casing.

Business Trends: Non-OEM parts—Buyer beware

Boyle, B., Emerson

What is the harm in wearing a knock-off Rolex watch?

Investigations of high pressure drop observed in ASU columns

Xu, F.-J., Zhou, F.-H., Cao, Z.-M., China National Air Separation Engineering Co.; Yang, Q., Zuber, L., Sulzer Chemtech Ltd.; Dong, J.-J., Sulzer Chemtech China

The measured pressure drop of columns in air separation units (ASUs) is often reported as being higher than the predicted pressure drop.

HP Flashback: Excerpts from the 1960s: Petrochemicals rise in prominence and new know-how in refining processes

Nichols, Lee, Hydrocarbon Processing Staff

Petrochemicals rise in prominence and new know-how in refining processes

Investigation and diagnosis of startup foaming issues at a new tail gas treater

In May 2021, Phillips 66 started up a new methyl diethanolamine (MDEA)-based tail gas unit at its Belle Chasse, Louisiana, refinery.

HP Flashback: Operations expand and technologies advance during global conflict: Excerpts from the 1940s

Nichols, Lee, Hydrocarbon Processing Staff

This articles details several case studies on the use of x-ray technology for inspection purposes. This includes for the inspection of casings, forgings and welded structures, among others.