38results about "Reforming process control/regulation" patented technology

Provided is a system including a planning section that generates a production plan for a production site, using a planning model; a simulating section that simulates operation of at least a portion of the production site, based on a simulation model of the at least a portion of the production site; a monitoring section that monitors actual operation of the at least a portion of the production site; a calibrating section that calibrates the simulation model, based on a difference between the simulated operation and the actual operation; and a control section that controls the at least a portion of the production site, based on a simulation result obtained by simulating the operation of the at least a portion of the production site in accordance with the production plan, using the simulation model that has been calibrated.

The utility model belongs to the technical field of petrochemical engineering, and particularly provides a system for controlling the blending hydrogenation crude gasoline proportion of a reforming device, which comprises a normal pressure naphtha control pipeline, a hydrogenation crude gasoline control pipeline, a raw material buffer tank, a gasoline mixing unit, a liquid level controller I and a liquid level controller II, the problems that a traditional blending mode is not timely in adjustment, poor in precision, poor in reforming reaction effect, unstable in product quality and increased in equipment operation risk are solved, the liquid level in the raw material buffer tank is accurately, stably and effectively adjusted and controlled, and a solid guarantee is provided for efficient and stable operation of the device and improvement of the product quality.

The invention discloses a high-yield and low-carbon-deposition regulation and control method and system for a continuous regenerative catalytic reforming reaction. The method comprises the following steps: at the beginning, setting a weighted average inlet temperature for the four-in-one reforming reactor and setting an inlet temperature of each bed layer; measuring the content of naphthenic hydrocarbon in naphtha to be added at the beginning, and setting the initial average pressure of the four-in-one reforming reactor according to the content of naphthenic hydrocarbon in naphtha to be added; naphtha is added into the four-in-one reforming reactor for a reaction; in the reaction process, the weighted average inlet temperature of the four-in-one reforming reactor, the inlet temperature of each bed layer, the catalyst circulation rate and the average pressure are regulated and controlled in real time; and ending the experiment. The method breaks through the critical path of the current technical bottleneck, and has important significance for improving the product selectivity of the continuous regeneration catalytic reforming process, reducing the energy consumption and prolonging the service life of the catalyst.

The present disclosure relates to aromatization of hydrocarbons with an aromatization catalyst, including methods of aromatization using a continuous catalyst regeneration reformer.

A method for operating a continuous catalytic reformer unit may include passing a hydrocarbon reactant stream to a continuous catalytic reformer unit to form one or more product effluent streams, the continuous catalytic reformer unit comprising at least one stream pre-heater, at least one catalytic reactor, and at least one separation unit; implementing a hydrocarbon reformer process control system comprising a hydrocarbon reformer variable data memory comprising processor-executable instructions, a hydrocarbon reformer output translation module, and one or more predictive hydrocarbon reformer modeling processors configured to execute the processor-executable instructions and cause the process control system to: receive one or more signals indicative of one or more present state variables from one or more state variable actuator hardwares, wherein the present state variables are process variables that cannot be directly set in the continuous catalytic reformer unit; and receive one or more signals indicative of one or more present control variables of the continuous catalytic reformer unit from one or more control variable actuator hardwares, wherein the present control variables are process variables that can be directly set in the continuous catalytic reformer unit; and generate, by utilizing a machine learned model, an improved control variable that increases a selected performance variable based on the inputs of one or both of one or more present state variables or one or more present control variables, wherein the improved control variable wherein the machine learned model is trained utilizing inputs of at least historic state variable data, historic control variable data, and historic performance variable data; and adjusting one or more present control variables of the continuous catalytic reformer unit based on the improved control variable determined by the machine learned model.

The invention discloses a temperature peak positioning method and system for a continuous reforming regenerator, and solves the problems of poor combustion temperature prediction precision and insufficient stability of the continuous reforming regenerator in the prior art, and the method comprises the steps: collecting process variables from a DCS system, building a three-dimensional model of the continuous reforming regenerator, and carrying out the prediction of the combustion temperature of the continuous reforming regenerator; obtaining temperature field and temperature peak position coordinates under each different working condition; establishing a mechanism model based on mass-energy balance and reaction kinetics in the regeneration process, adopting an XGBoost algorithm as data driving compensation, constructing a hybrid model of mechanism constraint and XGBoost data driving compensation, and performing training; and based on the trained hybrid model, batch processing reasoning is adopted, and current temperature peak coordinates and prediction credibility are output. A hybrid model with physical interpretability and high precision is constructed, prediction errors under extreme working conditions are reduced, and model stability is guaranteed.

Processes and apparatus for reforming hydrocarbons to reduce the impact of contaminants created by non-catalyst coking. The reaction zone receives sulfur to inhibit the impact, and a control index is used to control the determine conditions with generally lower pressures. Additionally, a compression zone, pressure control zone and combustion zone operation are provided for the operation of the reaction zone at the generally lower pressures.

To estimate the activity of a catalyst which is used in a catalyst reaction device in a circulating manner.SOLUTION: An information processing device 10 comprises: an acquisition unit 12 for acquiring operation data 28 including respective time series values of multiple parameters which indicate an operation state of a catalyst reaction device; and a calculation unit 14 which uses the operation data 28 to calculate an estimated value related to the activity of the catalyst being used in the catalyst reaction device. The catalyst reaction device comprises: a reactor for causing raw oil and the catalyst to react; and a circulation path for returning the catalyst discharged from the reactor to the reactor. The multiple parameters include: at least one parameter related to the raw oil; at least one parameter related to the temperature of the reactor; and at least one parameter related to the amount of discharge of the catalyst which is partially discharged from the circulation path or the amount of input of new catalyst input to the circulation path.SELECTED DRAWING: Figure 4

Embodiments of systems and methods for enhancing control of catalytic reformer operations are disclosed. A method includes receiving product data indicative of a property of a product of a catalytic reformer and receiving feedstock data indicative of a feedstock for processing by the catalytic reformer. A target octane number or target octane-barrels for the reformate may be specified and a machine learning model generates an adjustment to a parameter of the catalytic reformer based on the feedstock data and the product data to achieve an enhanced yield of hydrogen gas while achieving the target octane number of the reformate, wherein the machine learning model is trained with catalytic reformer historical data indicative of operating parameters, operational constraints, the feedstock, and products of the catalytic reformer.

FIELD OF THE DISCLOSURE This disclosure relates to the aromatization of hydrocarbons with an aromatization catalyst, including aromatization processes that involve the use of a continuously catalyst regenerating reformer.

The process upgrades a low value heavy aromatics stream into a high value BTX precursor stream. It treats the C9 to C 12 Naphthalene molecules in the heavy aromatics stream of the aromatics are converted to BTX precursors by partially hydrogenating one of the aromatic rings prior to the transalkylation reactor and subsequently ring opening the saturated ring to form a single aromatic ring. The remaining C 11 Monaromatics to achieve an overall increased BTX yield.

The present disclosure relates to the aromatization of hydrocarbons with an aromatization catalyst, including methods of aromatization comprising the use of a continuous catalyst regeneration type reformer.

The invention relates to a naphtha moving bed continuous reforming reaction method and a naphtha moving bed continuous reforming reaction system, the method comprises the following steps: naphtha successively enters a cycloalkane dehydrogenation reaction zone and a paraffin dehydrogenation cyclization reaction zone which are connected in series to contact with a catalyst for reaction, and each reaction zone comprises a plurality of reactors which are connected in series; enabling the catalyst flowing out of the last reactor in the cycloalkane dehydrogenation reaction zone to enter a regeneration zone for regeneration; enabling a regenerated catalyst from a regenerator to enter a first reactor of the alkane dehydrocyclization reaction zone and then flow through other reactors of the alkane dehydrocyclization reaction zone in sequence; enabling the catalyst flowing out of the alkane dehydrogenation cyclization reaction zone to enter a first reactor of the cycloalkane dehydrogenation reaction zone, and then sequentially flowing through the rest reactors of the cycloalkane dehydrogenation reaction zone. Compared with a traditional countercurrent or downstream moving bed continuous reforming reaction, the method has the advantages that carbon deposit of the catalyst in a reaction system can be reduced, and the liquid yield and the aromatic hydrocarbon yield are increased.

A method for operating a continuous catalytic reformer unit may comprise passing a hydrocarbon reactant stream to a continuous catalytic reformer unit to form one or more product effluent streams, the continuous catalytic reformer unit comprising at least one stream pre-heater, at least one catalytic reactor, and at least one separation unit; implementing a hydrocarbon reformer process control system comprising a hydrocarbon reformer variable data memory comprising processor-executable instructions, a hydrocarbon reformer output translation module, and one or more predictive hydrocarbon reformer modeling processors configured to execute the processor-executable instructions and cause the process control system to: receive one or more signals indicative of one or more present state variables from one or more state variable actuator hardwares, wherein the present state variables are process variables that cannot be directly set in the continuous catalytic reformer unit; and receive one or more signals indicative of one or more present control variables of the continuous catalytic reformer unit from one or more control variable actuator hardwares, wherein the present control variables are process variables that can be directly set in the continuous catalytic reformer unit; and generate, by utilizing a machine learned model, an improved control variable that increases a selected performance variable based on the inputs of one or both of one or more present state variables or one or more present control variables, wherein the improved control variable wherein the machine learned model is trained utilizing inputs of at least historic state variable data, historic control variable data, and historic performance variable data; and adjusting one or more present control variables of the continuous catalytic reformer unit based on the improved control variable determined by the machine learned model.

The invention relates to a method for analysing process streams comprising five or more different hydrocarbon-containing components. In the method, at least one process stream line (35) is operatively connected to an online IR spectrometer (2) and to an online gas chromatograph (1). The process stream passed through the process stream line (35) is subjected to an online characterization which comprises both measurements with the online IR spectrometer (2) and measurements with an online gas chromatograph (1). The spectral data and the chromatography data are mathematically related by means of suitable statistical methods, thus making it possible to train a model which is used to evaluate the analysis data and to characterize the process streams. The method according to the invention is characterized by short measuring times in the range of seconds and milliseconds and a high degree of accuracy. The method according to the invention for analysing process streams preferably relates to process streams which come from processes taking place in a parallel manner; the process streams preferably come from reaction chambers arranged in a parallel manner.

A method for operating a continuous catalytic reformer unit may include passing a hydrocarbon reactant stream to a continuous catalytic reformer unit to form one or more product effluent streams, the continuous catalytic reformer unit comprising at least one stream pre-heater, at least one catalytic reactor, and at least one separation unit; implementing a hydrocarbon reformer process control system comprising a hydrocarbon reformer variable data memory comprising processor-executable instructions, a hydrocarbon reformer output translation module, and one or more predictive hydrocarbon reformer modeling processors configured to execute the processor-executable instructions and cause the process control system to: receive one or more signals indicative of one or more present state variables from one or more state variable actuator hardwares, wherein the present state variables are process variables that cannot be directly set in the continuous catalytic reformer unit; and receive one or more signals indicative of one or more present control variables of the continuous catalytic reformer unit from one or more control variable actuator hardwares, wherein the present control variables are process variables that can be directly set in the continuous catalytic reformer unit; and generate, by utilizing a machine learned model, an improved control variable that increases a selected performance variable based on the inputs of one or both of one or more present state variables or one or more present control variables, wherein the improved control variable wherein the machine learned model is trained utilizing inputs of at least historic state variable data, historic control variable data, and historic performance variable data; and adjusting one or more present control variables of the continuous catalytic reformer unit based on the improved control variable determined by the machine learned model.

Methods and systems are provided for delimiting a gas plant during fluid catalytic cracking unit (FCCU) revamp as part of the olefin production system. These methods and system include a chiller unit in the gas concentration unit downstream of the FCCU. Other measures also include installing a stripper unit downstream of the regenerator of the FCCU or installing a quench line in a reactor of a FCCU to reduce the contact time of the hydrocarbon feedstock with the catalyst. These methods and systems may also lead to an increase in the propylene yield of the olefin production system

To provide a method for producing an aromatic compound, which can reduce an amount of coke adhering to a catalyst during the production of the aromatic compound.SOLUTION: The method for producing the aromatic compound according to the present disclosure includes: an aromatic compound production step of bringing a feedstock containing a hydrocarbon compound into contact with a catalyst containing zeolite to produce an aromatic compound; and a regeneration step of bringing the catalyst on which coke is adhered in the aromatic compound production step into contact with an oxygen-containing gas at 300°C or higher to remove the coke, and regenerating the catalyst, wherein the aromatic compound production step and the regeneration step are alternately repeated, and an amount of coke adhered to the catalyst regenerated by the regeneration step is 5 to 50% of an amount of coke adhered to the catalyst before the regeneration step.SELECTED DRAWING: Figure 1

The invention relates to a device and a method for examining the naphtha reformation process in catalyst test devices, comprising reactors arranged in parallel. The device has a plurality of reactors arranged in parallel comprising reaction chambers (R1, R2,...), a reactant fluid supply, a process controller, and at least one analysis unit. Each individual reactor has an outlet line for the flow of a product fluid, said analysis unit being operatively connected to each outlet line for the flow of the product fluid, and the device functionally correlates to the control of the device. In the method, naphtha-containing reactant fluid flows are brought into contact with catalysts in the individual reactors, and the flows of the product fluid are subsequently supplied to the online analysis unit from the respective outlet lines of the individual reactors and analyzed. Using the analysis of the online analytic characterization data, the process parameters of the respective reactor unit are adapted. The method steps of analytic characterization, analysis, and adaptation of process parameters are repeated for the duration of the examination.

Methods and systems are provided for delimiting a gas plant during fluid catalytic cracking unit (FCCU) revamp as part of the olefin production system. These methods and system include a chiller unit in the gas concentration unit downstream of the FCCU. Other measures also include installing a stripper unit downstream of the regenerator of the FCCU or installing a quench line in a reactor of a FCCU to reduce the contact time of the hydrocarbon feedstock with the catalyst. These methods and systems may also lead to an increase in the propylene yield of the olefin production system

The application discloses a device and method for preparing aromatic hydrocarbons from naphtha, and the device comprises a fluidized bed reactor and a riser reactor; the fluidized bed reactor is used for introducing a naphtha raw material to make contact with a catalyst from the riser reactor and react to generate a BTX-containing product gas stream and a spent catalyst, the product gas stream is subjected to gas-solid separation, the product gas stream after separation is sent to a downstream working section, and unconverted naphtha after separation returns to the fluidized bed reactor as a raw material; and a part of low-carbon alkanes after separation return to the riser reactor as raw materials and are further converted into aromatic hydrocarbons and other components. According to the application, by connecting a high-temperature riser reactor and a relatively low-temperature fluidized bed reactor in series, a yield of low-carbon alkane is reduced and a yield of aromatic hydrocarbons is increased; and linear-chain and branched-chain aliphatic hydrocarbons can be efficiently converted into the aromatic hydrocarbons in a highly selective mode, and a content of p-xylene in a xylene mixture is greater than 50wt%.

The processes upgrade a low value heavy aromatics stream into a high value BTX precursor stream. It treats the naphthalenic molecules in the heavy aromatics stream comprising C9 to C12 aromatics prior to reaching the transalkylation reactor. The naphthalenic molecules are converted into BTX precursors by partially hydrogenating one of the aromatic rings and subsequently ring opening the saturated ring to form a monoaromatic prior to the transalkylation reactor. With naphthalene no longer present, the remaining C11 monoaromatics may be processed in the aromatics complex for an overall increased BTX production.

The present disclosure relates to the aromatization of hydrocarbons with an aromatization catalyst, including methods of aromatization comprising the use of a continuous catalyst regeneration type reformer.

The invention provides a C10 recovery device capable of generating steam, and belongs to the technical field of petroleum refining, the C10 recovery device comprises a first feed preheater, a second feed preheater, a C10 cutting tower, a tower top steam generator and a tower top hot water heat exchanger, enabling the raw oil to enter a C10 cutting tower at a preset temperature for separation treatment to form a gaseous light component; the tower top steam generator is connected between the tower top of the C10 cutting tower and the tower top hot water heat exchanger and is used for carrying out secondary condensation treatment on the gaseous light components, low-pressure steam and liquid light components subjected to primary condensation are generated after the light components are subjected to condensation treatment through the tower top steam generator, and the low-pressure steam and the liquid light components are subjected to secondary condensation treatment through the tower top hot water heat exchanger. And condensing the liquid light component through a tower top hot water heat exchanger to generate hot water for heat tracing and a product of C10 and below, wherein the product of C10 and below is output as a reforming raw material in a hot discharge form. According to the invention, the recovery of C10 and below products can be realized.

The application discloses a device and method for preparing aromatic hydrocarbons from naphtha, and the device comprises a fluidized bed reactor and a riser reactor; the fluidized bed reactor is used for introducing a naphtha raw material to make contact with a catalyst from the riser reactor and react to generate a BTX-containing product gas stream and a spent catalyst, the product gas stream is subjected to gas-solid separation, the product gas stream after separation is sent to a downstream working section, and unconverted naphtha after separation returns to the fluidized bed reactor as a raw material; and a part of low-carbon alkanes after separation return to the riser reactor as raw materials and are further converted into aromatic hydrocarbons and other components. According to the application, by connecting a high-temperature riser reactor and a relatively low-temperature fluidized bed reactor in series, a yield of low-carbon alkane is reduced and a yield of aromatic hydrocarbons is increased; and linear-chain and branched-chain aliphatic hydrocarbons can be efficiently converted into the aromatic hydrocarbons in a highly selective mode, and a content of p-xylene in a xylene mixture is greater than 50wt%.

The invention discloses a heat recovery integrated catalytic reforming system for efficiently producing high-octane gasoline and a catalytic reforming method. The system comprises a pretreatment unit, a first-stage catalytic reforming unit and the like, the pretreatment unit is communicated with the first-stage catalytic reforming unit and a heat recovery subsystem and is communicated with a fine separation unit through the heat recovery subsystem, and the first-stage catalytic reforming unit is communicated with a hydrogen circulation subsystem. The fine separation unit is respectively communicated with the deep isomerization unit, the second-stage catalytic reforming unit and the third-stage reinforced reforming unit, the deep isomerization unit is communicated with the product blending unit, the second-stage catalytic reforming unit is communicated with the product blending unit through a heat recovery subsystem, and the third-stage reinforced reforming unit is communicated with the product blending unit. And the hydrogen circulation subsystem is respectively communicated with the first-stage catalytic reforming unit, the second-stage catalytic reforming unit and the third-stage reinforced reforming unit. The gasoline octane number and the liquid yield are remarkably improved, and the catalyst coking rate and the system energy consumption are reduced.

Methods and systems are provided for defining a gas plant during fluidized catalytic cracking unit (FCCU) retrofit that is part of an olefin production system. These methods and systems include a cooler unit in a gas concentration unit downstream of the FCCU. Other measures also include installing a stripper unit downstream of the regenerator of the FCCU or installing a quench line in the reactor of the FCCU to reduce the contact time of the hydrocarbon feedstock with the catalyst. These processes and systems may also result in an increase in propylene yield of an olefin production system.

Embodiments of systems and methods for enhancing control of refining and product blending pool operations are disclosed. A method includes receiving sensor data, by a machine learning model, including a feedstock composition in an isomerization process and predicting a quantity of heat released by the isomerization of the feedstock in a lead reactor. The method further includes predicting an adjustment to one or more of a heat input or feedstock feed rate to the lead reactor to counter the predicted quantity of heat and implement the adjustment to one or more of a heat input or feedstock feed rate to the lead reactor.