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Oil Refining

Axens will supply a modular Prime-G+ ® unit to Raizen Buenos Aires Refinery

Raízen Argentina, Shell licensee, has selected Axens for the modular supply of a FCC gasoline hydrodesulphurization unit Prime-G+® in its Buenos Aires refinery.

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Axens Signs an Agreement with Hengyi Industries to Provide FLEXICOKING™ Technology

Since the Alliance Agreement signed between ExxonMobil Catalysts and Licensing (EMCL) and Axens to provide FLEXICOKING™ technology in January 2020 (See Press Release here), it has been a great success as can be seen in the new license granted to Hengyi Industries' integrated complex in Pulau Muara Besar, Brunei.

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Oil Refining

What are the key trends affecting the downstream processing industry in 2017?

In 2016, global growth should fall to 3.1% before rising back up to 3.4% in 2017 according to IMF’s latest estimations. Long-term perspectives in industrialised countries are moderate and a firming up of growth is forecasted at mid-term in emerging and developing countries.

Written by Eric Benazzi · Vice President Marketing & External Communication ·
Oil Refining

Is there a route for post-treating gasoline with minimal octane loss?

For the post-treatment of FCC gasoline, fixed-bed HDT is by far the most trusted solution because of its low capex, its ease of operation, and its flexibility.

Written by Olivier BOISIER & Boris HESSE ·
Oil Refining

Our desalting rate drops away quickly when we use heavier feeds. What is the problem here?

To understand this phenomenon, it is required to remind how a desalter is designed. The water gravity separation is driven by the Hadamard–Rybczynski equation that gives the terminal velocity of a slowly moving spherical bubble through a fluid.

Written by Nabil Bouden · Equipment Sales Manager, Axens ·
Oil Refining

Hydrogen consumption is higher than we would like in our raw diesel hydrotreater. Can we lower it without loss of throughput?

Hydrogen consumption in a hydrotreater comes from hydrotreatment reactions but also from losses within the process.

Written by Marion Guillevic · Technologist, Axens ·
Oil Refining

What type of catalyst do we need for low pressure hydrotreating of middle distillates?

When it comes to selecting the right catalyst for the hydrotreatment of a middle distillates fraction at low pressure, a distinction has to be made between light (kerosene) and heavy (diesel) cuts.

Written by Gregory Lapisardi · Technologist, Middle distillates HDT, Axens ·
Natural Gas Oil Refining

What steps do we need to take to keep our sour water stripper at peak performance following a shutdown?

Shutdown operations of the sour water stripper unit should maximise the removal of H2S and NH3 from water, especially for long duration shutdowns, to minimise the safety concerns and corrosion issues during maintenance. If the sulphur recovery unit is not available, the sour gas should be routed to flare, then start the shutdown by decreasing the sour water feed to the unit manually and slowly.

Written by Carmella Alfano & Guillaume Dalary ·
Oil Refining

How can we minimise gas and coke make with heavy feed to our FCC?

Catalytic systems towards better coke and/or dry gas selectivities will certainly help, especially to face contaminant metals which catalyse side reactions. If not limited by catalyst circulation, low delta coke catalysts will increase cat/oil but coke yield should stay constant.

Written by Pierre Bellet ·