Saudi Arabian Oil Company

Saeed Al-Alloush

Othman Taha

M Rashid Khan

Hussain M Al-Qahtani

Ibrahim Al-Babtain

Gene Yeh

A method for fluid catalytic cracking (FCC) of petroleum oil feedstock includes reacting the petroleum oil feedstock with a catalyst mixture in a reaction zone of an FCC unit to obtain a product stream including desulfurized hydrocarbon product, unreacted petroleum oil feedstock, and spent catalyst. During the reacting a process control system develops a process model based on data collected during the reacting, the process model characterizing a relationship among the feed rate of the base cracking catalyst, the feed rate of the FCC additive, the operating conditions, the composition of the product stream, and emissions from the reaction; and one or more of (i) a target feed rate of the base cracking catalyst, (ii) a target feed rate of the FCC additive, and (iii) one or more target operating conditions of the reaction in the reaction zone to reduce the emissions from the FCC unit and to increase a yield of the desulfurized hydrocarbon product in the product stream are determined.

Fluid catalytic cracking of petroleum oil with reduced emissions

A method and apparatus for the cracking of a petroleum oil feedstock to produce a desulfurized full-range gasoline product. The petroleum oil feedstock is contacted with a base cracking catalyst and an FCC additive in an FCC unit, wherein the catalyst includes a stable Y-type zeolite and a rare-earth metal oxide and the additive includes a shape selective zeolite. The catalyst, additive and petroleum oil feedstock can be contacted in a down-flow or riser fluid catalytic cracking unit, that can also include a regeneration zone, a separation zone, and a stripping zone. The FCC unit includes an integrated control and monitoring system that monitors at least one parameter selected from FCC operating parameters, feed rate, feedstock properties, and product stream properties, and adjusts at least one parameter in response to the measured parameter to increase production of desulfurized products.

Control of fluid catalytic cracking process for minimizing additive usage in the desulfurization of petroleum feedstocks

A method to limit the deposition of metals from a syngas stream on a gas turbine comprising the steps of feeding the syngas stream to a pressure swing adsorption vessel of a pressure swing adsorption system, the syngas stream comprises carbonyls, the pressure swing adsorption vessel configured to perform a pressure swing adsorption cycle: adsorbing the carbonyls on a carbonyl selective adsorbent, leaving a turbine feed stream, reducing the pressure of the pressure swing adsorption vessel to a purge pressure less than the adsorbing pressure, purging the carbonyls from the carbonyl adsorbed adsorbent to create a tail gas stream, re-pressurizing the regenerated carbonyl adsorbent to the adsorbing pressure, feeding the tail gas stream to an incinerator configured to oxidize the carbonyls in the tail gas stream to metal oxides and carbon dioxide, and feeding the turbine feed stream to the gas turbine.

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Dammam, Saudi Arabia

Saeed Al-Alloush