Refining
Optimization study in hydrocracker unit using simulation model
Hydrocrackers are key refinery units that convert heavy feed components into valuable lighter products. The profitability of these units is directly related to this conversion level. Conversion reactions take place in a nearly pure hydrogen environment, with the help of selective catalysts, under high pressure and high temperature. The products of the unit are separated in the fractionator section. Unconverted oil taken from the fractionator bottoms reveals the conversion performance of the unit.
A new liquid-phase isomerization process for xylene loop debottleneck and energy savings
In a typical xylene loop, C<sub>8</sub> aromatics are fractionated out of a heavy reformate C<sub>8</sub>+ aromatics stream and collected in the xylene column overhead. Then, paraxylene (PX) from the C<sub>8</sub> aromatics stream is recovered as product—usually by an adsorption or crystallization process—in the PX recovery section.
Treat toxic, malodorous ethylene spent caustic using WAO technology
As China’s largest integrated refinery, Sinopec’s Zhenhai Refining & Chemical Co. (ZRCC) plant can process approximately 23 MM metric tpy of crude oil. The plant produces more than 50 fuel and chemical products, including different grades of gasoline, jet and diesel fuels, asphalt and polypropylene plastics, as well as more than 1 MM metric tpy of ethylene. The latter generates spent caustic, one of the world’s most toxic wastewaters.
Can ammonia be a future energy storage solution?
Ammonia is well known as a fertilizer. However, it is also a potential carbon-free fuel and an excellent solution for storage of renewable electricity, especially if the syngas needed for producing the ammonia is made by electrolysis.
Business Trends: The ins and outs of construction contracts
Industrial construction projects are becoming larger and more complex, with shorter schedules. To meet these challenging requirements, such construction projects are often executed by multiple entities located in different countries that may have different business objectives.
Heat Transfer: Designing electric process heater systems for catalytic regeneration
Achieving effective catalyst regeneration requires a process that produces a very high level of heat in a very efficient manner. Over the years, several different approaches have been taken to create this required heat. Traditional steam has been a popular choice, as has heated transfer media. However, these methods have limitations.
Digital: Better maintenance through better data
When I talk to professionals in the refining and petrochemical businesses, they are always interested in how new technologies can improve operational efficiency, make plants safer and increase profitability.
Executive Viewpoint: Succeeding against cyber attacks
No doubt exists that the added connectivity that modern control and automation systems deliver offers a myriad of benefits. By embedding computing within the process and utilizing edge and cloud technologies, it can provide greater visibility. It creates a digital thread for the plant and allows both equipment and the processes to be analyzed, as well as giving prescriptive advice.
Optimization: Steam methane reformer vs. electrolysis technology
Hydrogen market demand is forecast to expand. Bulk petrochemicals, ammonia, methanol and gasoline refining consume nearly two-thirds of global hydrogen demand.
Reliability: When slow-rolling machines can cause failures, and how to avoid them
All the book learning in the world will fail if we do not use common sense. We could also say that we need to think things through and should recognize that intuitive logic can lead us astray. If that sounds like semantic banter, let us zero in on three practical field examples that illustrate the issues at hand.
- NAPCOR releases 2024 PET recycling report highlighting system efficiency gains and continued strength of PET circularity 12/12
- OQ courts other partners for petrochemical complex in Oman as SABIC drops out 12/12
- Brazil's BNDES approves $71 MM for carbon storage project 12/12
- Cuba on edge as U.S. seizure of oil tanker puts supply at risk 12/12
- China oil demand to plateau between 2025 and 2030 12/12
- Germany's PCK refinery says no impact from pipeline leak 12/12
