Disclosed is a fluidized catalytic cracking regeneration apparatus and application thereof. The fluidized catalytic cracking regeneration apparatus comprises a coke supplemental device, a regenerator and an external catalyst circulation pipe, wherein an outlet of the coke supplemental device is in fluid communication with an inlet of the regenerator, the external catalyst circulation pipe connects a lower portion of the regenerator to the coke supplemental device for returning part of catalyst in the regenerator to the coke supplemental device, the coke supplemental device is provided with an inlet for spent catalyst, an inlet for oxygen-lean gas, and an inlet for fuel oil, and an inlet for oxygen-rich gas is disposed at bottom of the regenerator, wherein the inlet for fuel oil is disposed at a position downstream of the inlet for spent catalyst along a direction of stream flow.

Provided herein are methods and systems for decontaminating and converting a mixed plastic waste feed to a hydro-gen-rich stream suitable for hydrocarbon refinery processing. Methods include the depolymerization of mixed plastic waste, removal of inorganic and metal contaminants, and feeding to one cracking unit or several cracking units in series. The products of the hydrocarbon refinery processing are high value chemicals such as C2-C4 olefins and benzene, toluene, xylenes, and ethyl benzene.

In various aspects, systems and methods are provided for operating an oxygen-fired catalyst regenerator with flue gas recycle and CO.sub.2 capture. An oxygen-fired catalyst regenerator contrasts with an air-fired regenerator. The oxygen-fired catalyst regenerator substantially reduces nitrogen within the system, which facilitates CO.sub.2 capture by reducing the energy required to capture CO.sub.2. In various aspects, a first portion of the regenerator flue gas is passed to a CO.sub.2 capture system and a second portion is recycled to the regenerator. Before the flue gas is recycled or diverted to the CO.sub.2 capture, it is passed to various processes that remove and/or reduce SO.sub.x, NO.sub.x, particulate, and water content. In various aspects, a portion of the treated flue gas may be combined with substantially pure O.sub.2 and recycled to the regenerator.

Embodiments of the present disclosure provide a method for producing waste plastic pyrolysis oil with reduced chlorine, the method including a first operation of charging a waste plastic raw material and an accelerator containing char into a reactor; a second operation of pyrolyzing the waste plastic raw material in the reactor and recovering pyrolysis oil; and a third operation of recovering the accelerator from the reactor.

A process for supplementing production of liquid fuel from carbon oxides is disclosed. The process comprises contacting a hydrocarbon feed stream with a catalyst in a reactor to produce a reactor effluent stream. The reactor effluent stream is separated to provide a dry gas stream. The dry gas further separated into a CO2 rich stream and a CO2 lean stream. The CO2 lean stream is used to produce methanol. The methanol is contacted with an MTO catalyst to produce an olefin stream. The olefin stream is oligomerized by contacting it with an oligomerization catalyst in an oligomerization reactor to produce an oligomerized olefin stream which is further hydrogenated. A sustainable aviation fuel is taken from the hydrogenated oligomerized stream.

The present invention pertains to a catalytic cracking. More specifically, the present invention pertains to a process for the preparation of a catalyst for cracking a hydrocarbon stream wherein the catalyst comprises a modified zeolite and a modified alumina. The present invention further provides a process and an apparatus for the cracking of a hydrocarbon stream into higher yield of lighter olefins and aromatics by employing the catalyst while sustaining the unit heat balance. The catalyst of the present invention shows enhanced coke formation, higher propylene to ethylene weight ratio and a higher BTX selectivity when used in the cracking of hydrocarbon stream.

The present application refers to an ultrasonic oxidative desulfurization method for gasoline or diesel, comprising: Step 1, mixing an oxidant solution with an organic acid catalyst solution to obtain a mixture solution, wherein the oxidant reacts with the organic acid catalyst to obtain a peroxy acid; Step 2, mixing the mixture solution with gasoline or diesel and heating to 50 to 70 C., and performing an ultrasonic oxidative reaction under ultrasonic waves at 15 to 25 kHz to obtain a pre-prepared oil; wherein a mass flow ratio of the oxidant solution, the organic acid catalyst solution and the gasoline or diesel is (0.03-0.08):(0.01-0.03):1; Step 3, performing a phase separation process to the pre-prepared oil; and Step 4, recycling the organic acid catalyst and performing a countercurrent extraction for the gasoline or diesel to obtain a desulfurized gasoline or diesel.

A process for supplementing production of liquid fuel from carbon oxides is disclosed. The process comprises contacting a hydrocarbon feed stream with a catalyst in a reactor to produce a reactor effluent stream. The reactor effluent stream is separated to provide a dry gas stream. The dry gas further separated into a CO2 rich stream and a CO2 lean stream. The CO2 lean stream is used to produce methanol. The methanol is contacted with an MTO catalyst to produce an olefin stream. The olefin stream is oligomerized by contacting it with an oligomerization catalyst in an oligomerization reactor to produce an oligomerized olefin stream which is further hydrogenated. A sustainable aviation fuel is taken from the hydrogenated oligomerized stream.

A process for upgrading plastic derived oil includes contacting the plastic derived oil with a mixed catalyst in a first reactor, where the mixed catalyst includes a decontamination catalyst and a cracking catalyst different from the decontamination catalyst. The first reactor reduces concentrations of halogen-containing compounds in the plastic derived oil. The process includes passing the first reactor effluent to a second reactor and contacting the first reactor effluent with the cracking catalyst to produce a second effluent comprising light olefins and naphtha range hydrocarbons. The process includes separating used mixed catalyst from the first reactor to produce a used decontamination catalyst and a second used cracking catalyst, and regenerating the decontamination catalyst and cracking catalyst in separate regenerators to reduce exposure of the cracking catalyst to halogen-containing compounds produced during regeneration of the used decontamination catalyst.

A process for upgrading plastic derived oil includes contacting a plastic derived oil stream with a decontamination catalyst in a first reactor, separating a first reactor effluent from a used decontamination catalyst, passing the first reactor effluent to a second reactor downstream of the first reactor, contacting the first reactor effluent with a cracking catalyst in the second reactor, and separating a second reactor effluent from a used cracking catalyst. The cracking catalyst is different from the decontamination catalyst. The process further includes regenerating the used decontamination catalyst in a decontamination catalyst regenerator to produce regenerated decontamination catalyst, and regenerating the used cracking catalyst in a cracking catalyst regenerator separate from the decontamination catalyst regenerator to produce regenerated cracking catalyst. Regenerating the used cracking catalyst separately reduces deactivation of the cracking catalyst by halogen-containing compounds produced during regeneration of the decontamination catalyst.