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Environment

Thermal decomposition of particulate mercury sulfides in petroleum—Part 2

Chevron Energy Technology Co.: Hatakeyama, E.  |  Das, T.  |  Hoelen, T. P.
Contributing Author: O'Rear, D.

Traces of particulate mercury sulfide (HgS) in stabilized crude oils transform to elemental mercury below 400°C in refinery distillation units. The authors evaluated this transformation and measured reaction rates and activation energies in crude oil and Hg-spiked mineral oil, using glass vessels at atmospheric pressure and a microunit at 1,000 psig.

Needle coke and synthetic graphite: Advance performance through technology application

Chevron Lummus Global: A. A. Faegh

This article looks at the global graphite market and future demand. In turn, it details the author's company's proven delayed coking technology through conventional and two-step processes to produce carbon precursors for synthetic graphite and needle coke for graphite electrodes.

SMR feed effluent hairpin exchanger: Once upon a time—An unusual thermal mix-point failure—Part 1

Suncor Energy Inc.: Gilbert, F.  |  Jacob, O.

This article presents a review of a failure that happened in a hairpin heat exchanger type on the shell side in a hydrogen (H2) reformer unit. This mechanism was not identified during the design phase and led to a failure after only two years of operation. This article also reviews the situations encountered during the design stage and how they affected the material selection. 

Refinery/petrochemical makeup water treatment: A general guide for technical personnel—Part 3

Buecker & Associates: Buecker, B.

A very important—and sometimes overlooked—unit operation within hydrocarbon processing facilities is makeup water treatment for steam generators and other processes. Many cases have been documented in which makeup system upsets have led to boiler tube failures that partially or completely shut down unit processes. The three parts of this article (August, September and October 2024) serve as a guide for those employees who may be on a steep learning curve when it comes to makeup system understanding. 

TotalEnergies studies Moroccan project to export green ammonia to Europe

TotalEnergies will study plans for a renewable energy project to produce hydrogen and ammonia in Morocco for delivery to Europe, which is seeking to increase use of the fuels as part of its energy transition.

Maersk signs long-term methanol sourcing deal

Maersk has entered into a long-term bio-methanol offtake agreement with LONGi Green Energy Technology Co. Ltd. The agreement will contribute to lowering GHG emissions from Maersk’s growing fleet of dual-fuel methanol container vessels.

Vast and GGS Energy to bring CSP-powered green methanol and SAF to the U.S.

Vast Renewables Ltd., a renewable energy company specializing in concentrated solar thermal power (CSP) systems that generate zero-carbon, utility-scale electricity and industrial process heat, has signed a development services agreement with GGS Energy LLC, a leading energy transition development company with deep project development experience, to pursue a commercial-scale synthetic fuels project in the Southwest U.S. (Project Bravo).

Canada's renewable diesel projects hit by U.S. import surge

Canadian renewable fuel producers are facing lower returns on new facilities due to a slump in British Columbia's low carbon fuel standard (LCFS) credit market, a trend expected to persist amid a flood of exports from the United States.

Carbon Clean announces fully column-less carbon capture with launch of CycloneCC C1 series

Carbon Clean, a leader in revolutionizing carbon capture solutions, has launched its breakthrough CycloneCC C1 series, marking the penultimate stage in the technology’s commercialization.

PetroChina set to shut top north China refinery in 2025

PetroChina is set to shut its largest domestic oil refinery around mid-2025, the country's first major closure at a state-run plant and part of a long-mooted project to replace it with a smaller facility at a new site.