November 15, 2017

Anticipating sulphur corrosion from crude oil

biofuels news item image

Scientists in the US are developing an analysis tool to more accurately predict how sulphur compounds in crude oil might corrode equipment. The research aims to address a major safety issue for fluid handling in the oil industry.

According to a statement from the US Department of Energy, the results of the ongoing research at the Stanford Synchrotron Radiation Lightsource (SSRL) will contribute towards improving oil industry guidelines. Specifically, the study aims to determine which types of sulphur are most important to identify in oil, in order to better predict potential corrosion rates.

“By looking at crude oil with a combination of X-ray spectroscopy techniques, we were able to examine and describe the complex chemistry of the sulphur compounds with high specifity,” said Monica Barney, a materials research engineer at Chevron.

 

Searching for the corrosives

High sulphur concentrations don’t always correlate with high levels of corrosion, and vice versa, making it difficult to predict how corrosive a particular crude oil will be.

“We can measure the concentration of sulphur, but it doesn’t tell you about the reactivity,” Barney, the research leader, explained. “Knowing the type of sulphur in crude oil is critically important for predicting properties related to corrosion.”

The idea behind the research is to use sulphur K-edge X-ray absorption to measure and determine the types of sulphur in crude oils. Barney and his team have developed an approach to examining crude oil using ‘tender X-rays’ – which occupy the middle ground between high-energy and low-energy X-rays.

Tuned to the correct energy, X-rays allowed the researchers to collect detailed information about the sulphur and other chemicals, and observe about the overlapping information generated by similarities in the sulphur compounds.

Essentially, SSRL’s X-ray absorption spectroscopy work allows the scientists to see a precise description of crude oil’s sulphur chemistry.

“This is an example of using state-of-the-art spectroscopy for a real world application,” Graham George, a professor who is involved in the research, explained.

The research is part of a larger collaboration at Chevron that is using several other techniques to understand the chemistry of sulphur in crude oil. The experimental data from several chemical characterisation methods are combined and compared to data from corrosion studies and predictions from computer modelling.







December 12, 2017
The plan is part of a wider effort to diversify the economy and develop production for value-added petroleum products. The number is up from the company’s 2016 estimate, according to Reuters. The... [Read More]

December 12, 2017
The system is a holistic approach to pipeline management, bringing multiple tools under one roof. Siemens has launched Pipelines 4.0, an integrated approach to the engineering, supply and life cycle optimisation... [Read More]

December 12, 2017
The pump is designed for maximum compatibility and accessibility. NETZSCH has expanded its line of full service-in-place (FSIP) industry-leading NEMO® progressive cavity pumps. The maintenance-friendly... [Read More]

December 12, 2017
The British Pump Manufacturers Association (BPMA) is looking to boost consumer confidence and streamline purchasing.   The association announced the initiative as part of a drive to increase awareness... [Read More]

December 11, 2017
Major water technology company Xylem has entered into a definitive agreement to acquire all the issued and outstanding shares of Pure Technologies. The transaction has been unanimously approved by Pure’s... [Read More]

December 11, 2017
11 December:  line still operating at a reduced rate due to 'minor leak' according to Reuters. The leak was detected 7 December, and comes after INEOS aquired the facility from BP at the... [Read More]

December 8, 2017
Simplifying processes meant more efficiency and speed in operation. Designed for the short-term storage of treated sludge, JP Concrete has completed six Cake Pads for Anglian Water, the first company... [Read More]

December 8, 2017
Siemens will showcase its comprehensive oil and gas solutions for upstream, midstream and downstream applications in booth 1934 at the upcoming Turbomachinery & Pump Symposia in Houston, Texas. The... [Read More]

December 8, 2017
Visitors to booth 1435 at Turbomachinery & Pump Symposia 2017 in Houston, Texas, will have the opportunity to experience Flowserve product demonstrations, meet the company’s pump and seal specialists,... [Read More]

December 6, 2017
Sulzer will be showcasing its turnkey services and pumping solutions at booth 2023 at the Turbomachinery & Pump Symposia in Houston, Texas. Attendees will be able to meet with Sulzer representatives... [Read More]

December 6, 2017
Aesseal we’ll be exhibiting its CAPI range in booth 1413 at the Turbomachinery & Pump Symposia in Houston, Texas. The Aesseal CAPI range is primarily utilised to suit the requirements of the... [Read More]

December 6, 2017
The new flowmeter is adapted to serve larger connections and provide visual verification of oil flow. Titan Enterprises reports how it developed an adapted version of its OG5 flowmeter... [Read More]

December 6, 2017
A water treatment facility in Olathe, Kansas, has deployed a novel solution to a valve access problem. The gravity filter plant houses 18 butterfly valves in an area beneath a walkway, making access and... [Read More]

December 6, 2017
Enbridge suspended operation of the pipeline in response to bad weather in the Straits of Mackinac. An agreement between the company and the State of Michigan requires the pipeline to be shut down in dangerous... [Read More]

December 5, 2017
Valve design emphasises low-maintenance and self-reliability. Mueller Water Products, a manufacturer of water distribution control valves, has introduced the Singer 106/206 PGM-2PR-630-SM Pressure Management... [Read More]