Refinery Hydrotreating Specialist

The specialist models trickle bed reactors operating at pressures up to one hundred and fifty bar and temperatures between three hundred and four hundred degrees Celsius, where liquid hydrocarbon feeds and hydrogen gas co currently trickle over beds of cobalt molybdenum CoMo or nickel molybdenum NiMo catalysts supported on gamma alumina. Conforming to standards established by the American Petroleum Institute API and the American Institute of Chemical Engineers AIChE, the specialist models hydrodesulfurization HDS, hydrodenitrogenation HDN, and aromatic saturation kinetics. They monitor catalyst deactivation caused by coke deposition and heavy metal poisoning, tuning reactor start of run SOR and end of run EOR temperature ramp schedules to prolong cycle life.

While chemical engineering simulation suites and continuous process telemetry calculate weighted average bed temperatures and hydrogen partial pressures, hydroprocessing involves severe high pressure, high temperature hazards. Feed maldistribution, liquid channeling, localized hot spots, and rapid catalyst deactivation from silicon or arsenic carryover can trigger catastrophic reactor runaway or premature shutdowns costing millions of dollars. The specialist oversees ex situ and in situ catalyst presulfiding protocols using dimethyl disulfide DMDS, inspects catalyst bed loading densities using dense loading technologies, and leads emergency responses to reactor pressure drop surges.

The day begins at six forty five in the morning at the refinery technical building. The specialist joins the daily hydroprocessing operations huddle, reviewing performance data from the Ultra Low Sulfur Diesel ULSD hydrotreater which processes forty thousand barrels per day of cracked middle distillates. Overnight, product diesel sulfur jumped from six parts per million to nine point two parts per million, approaching the ten parts per million regulatory ceiling. The specialist opens the DCS dashboard to inspect the three bed reactor profile. Reviewing the weighted average bed temperature WABT, the specialist notes that while bed one and two are

operating normally, bed three has experienced a three bar pressure drop increase following the introduction of a new light cycle oil feed containing higher refractory sulfur compounds like 4 6 dimethyldibenzothiophene. Calculating the required kinetic compensation, the specialist models a two degree Celsius temperature increase on the interstage quench feed while increasing the treat gas hydrogen to hydrocarbon ratio to maintain adequate hydrogen partial pressure at the catalyst surface. In the afternoon, the specialist suits up in personal protective equipment, safety harness, and H2S monitor to inspect the top deck.

A Refinery Hydrotreating and Desulfurization Catalyst Specialist designs, models, evaluates, and optimizes high pressure catalytic hydroprocessing reactors that remove sulfur, nitrogen, oxygen, and heavy metal contaminants from petroleum distillates, renewable diesel feeds, and sustainable aviation fuels. Operating across petroleum refineries, clean fuel technology centers, and specialty catalyst manufacturing hubs, the specialist ensures that diesel and jet fuels meet stringent ultra low sulfur environmental regulations of less than ten parts per million sulfur.

Core responsibilities include model, monitor, and optimize commercial trickle bed hydrotreating reactors to produce ultra low sulfur diesel and jet fuels., operational coordination, and ensuring strict adherence to Kenyan statutory frameworks and quality standards.

Key organizations hiring for this role include Kenya Medical Research Institute KEMRI, Dawa Life Sciences, Cosmos Pharmaceuticals Limited, Bio Foods Kenya, alongside expanding opportunities in Nairobi, Mombasa, Kisumu, and regional infrastructure projects.

Refinery Hydrotreating Specialist Specialist, Senior Refinery Hydrotreating Specialist, Refinery Hydrotreating Specialist Lead, Refinery Hydrotreating Specialist Consultant

While chemical engineering simulation suites and continuous process telemetry calculate weighted average bed temperatures and hydrogen partial pressures, hydroprocessing involves severe high pressure, high temperature hazards. Feed maldistribution, liquid channeling, localized hot spots, and rapid catalyst deactivation from silicon or arsenic carryover can trigger catastrophic reactor runaway or premature shutdowns costing millions of dollars. The specialist oversees ex situ and in situ catalyst presulfiding protocols using dimethyl disulfide DMDS, inspects catalyst bed loading densities using dense loading technologies, and leads emergency responses to reactor pressure drop surges. Employment opportunities concentrate across major industrial, commercial, and financial hubs including Nairobi, Mombasa, Kisumu, Nakuru, and Eldoret, alongside specialized regional project sites.