CN107291975A - A kind of method and system of catalytic cracking reaction product hard measurement - Google Patents
A kind of method and system of catalytic cracking reaction product hard measurement Download PDFInfo
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Abstract
The embodiments of the invention provide a kind of method and system of catalytic cracking reaction product hard measurement, this method includes：Gather the actual measurement Product distribution data and duty parameter of the different operating modes of catalytic cracking reaction；According to duty parameter, numerical simulation, the corresponding calculating Product distribution data of the different operating modes of acquisition are carried out to catalytic cracking reaction kinetic model using Fluid Mechanics Computation method；If the deviation summation for calculating Product distribution data and actual measurement Product distribution data is more than predetermined threshold value, the model parameter to catalytic cracking reaction kinetic model is optimized, until deviation summation is less than or equal to predetermined threshold value, obtains Optimized model parameter；According to Optimized model parameter, using Fluid Mechanics Computation method, the corresponding optimized product distributed data of the different operating modes of acquisition completes catalytic cracking reaction product hard measurement.The system is used to perform this method.The catalytic cracking production hard measurement of different operating modes is realized in the embodiment of the present invention, the precision and adaptability of catalytic cracking production hard measurement is improved.
Description
Technical field
The present embodiments relate to technical field of petrochemical industry, and in particular to a kind of catalytic cracking reaction product hard measurement
Method and system.
Background technology
Catalytic cracking unit (FCCU, Fluid Catalytic Cracking Unit) is the key device of Petrochemical Enterprises,
It is heavy oil deep processing, the important means of lighting, aggravates with heaviness, the in poor quality of crude oil, catalytic cracking unit
Effect is more protruded, and very important status is occupied in petroleum refining industry.Heavy crude by catalytic cracking unit by lighting,
Dry gas (C1, C2, H2, H2S), liquefied gas (C3, C4), gasoline (C5~C11), diesel oil (C10~C20), slurry oil are generated (with condensed ring
Based on aromatic hydrocarbons), coke (condensation product) etc..It is limited to the factors such as plant bulk, e measurement technology and catalytic cracking reaction
Product yield in the feature that the Complex Flows reaction system of itself is highly coupled, catalytic cracking reaction product is can not to use instrument
Table direct measurement is obtained, therefore using online measurable auxiliary variable, such as temperature, pressure, flow are estimated to be difficult to examine in real time
The soft-measuring technique of the product yield of survey is widely applied in catalytic cracking unit.
In the prior art, catalytic cracking soft-measuring technique uses lumped reaction kinetics mostly, passes through lumping kinetics mould
Type, obtains the product yield of catalytic cracking reaction.But this traditional lumped watershed hydrologic model model is in modeling process, only
Focus on cracking reaction dynamic process, it is assumed that the state of reacting gas is isothermal piston flow, and be have ignored in catalytic cracking system
Flowing, heat transfer, the influence of mass transfer and turbulence pulsation to reaction so that numerical simulation has certain deviation, to catalytic cracking
The precision of reaction hard measurement result affects.Moreover, the model parameter adaptability obtained under conventional method is poor, it is past
Toward being result for being obtained under special reaction condition and operating mode, therefore when the factors such as reaction condition, catalyst property change,
Need to carry out model correction and compensation by collection in worksite data.
Therefore, how to propose a kind of scheme, it is possible to increase the adaptability of catalytic cracking reaction flexible measurement method, further carry
The precision of high measurement result, as urgent problem to be solved.
The content of the invention
For defect of the prior art, the embodiments of the invention provide and a kind of catalytic cracking reaction product hard measurement
Method and system.
On the one hand, the embodiments of the invention provide a kind of choosing method of catalytic cracking reaction hard measurement auxiliary variable, bag
Include：
The corresponding floor data of the different operating modes of catalytic cracking reaction is gathered, the floor data includes catalytic cracking reaction
Survey Product distribution data and duty parameter；
According to the duty parameter, the catalytic cracking reaction kinetic model set up using Fluid Mechanics Computation method to pre-selection
Numerical simulation is carried out, the corresponding calculating Product distribution data of the different operating modes of catalytic cracking reaction is obtained；
If judging, the deviation summation for knowing the calculating Product distribution data and the actual measurement Product distribution data is more than in advance
If threshold value, then the model parameter to the catalytic cracking reaction kinetic model is optimized, until the deviation summation is less than
Or equal to the predetermined threshold value, obtain Optimized model parameter；
According to the Optimized model parameter and the catalytic cracking reaction kinetic model, the Fluid Mechanics Computation is utilized
Method, obtains the corresponding optimized product distributed data of the different operating mode of catalytic cracking reaction, using the optimized product distributed data as
The result of the catalytic cracking reaction product hard measurement.
Further, it is described that the catalytic cracking reaction kinetic model that pre-selection is set up is carried out using Fluid Mechanics Computation method
Numerical simulation, obtains the corresponding calculating Product distribution data of the different operating modes of catalytic cracking reaction, including：
If the numerical simulation is first simulation, model parameter initial value is set, and according to the corresponding institute of different operating modes
Duty parameter is stated, parameter of a flow model is set；
According to the model parameter initial value and the parameter of a flow model, pre-selection is set up using Fluid Mechanics Computation method
Catalytic cracking reaction kinetic model carry out numerical simulation, obtain that different operating modes described in catalytic cracking reaction are corresponding to calculate production
Thing distributed data.
Further, if it is described judgement know it is described calculating Product distribution data and the actual measurement Product distribution data it is inclined
Poor summation is more than predetermined threshold value, then the model parameter to the catalytic cracking reaction kinetic model is optimized, including：
If judgement knows that the deviation summation is more than predetermined threshold value, the model parameter is carried out using genetic algorithm excellent
Change.
Further, it is described according to the Optimized model parameter and the catalytic cracking reaction kinetic model, utilize institute
Fluid Mechanics Computation method is stated, the optimized product distributed data of catalytic cracking reaction is obtained, including：
The Optimized model parameter is substituted into the catalytic cracking reaction kinetic model, the Fluid Mechanics Computation is utilized
Method, numerical simulation is carried out to the catalytic cracking reaction kinetic model, obtains the optimized product distributed data.
Further, the catalytic cracking reaction kinetic model is ten four-lump kinetics models.
Further, the duty parameter includes：Temperature data, pressure data and data on flows.
Further, the actual measurement Product distribution data includes：Dry gas yield, yield of liquefied gas, yield of gasoline, diesel oil are received
Rate and coking yield.
On the other hand, the embodiment of the present invention provides a kind of system of catalytic cracking reaction product hard measurement, including：Data are adopted
Collect unit, for gathering the corresponding floor data of the different operating modes of catalytic cracking reaction, the floor data includes Catalytic Cracking Unit of Measure
The actual measurement Product distribution data and duty parameter answered；
Product distribution unit is calculated, for according to the duty parameter, being set up using Fluid Mechanics Computation method to pre-selection
Catalytic cracking reaction kinetic model carries out numerical simulation, obtains the corresponding product that calculates of the different operating modes of catalytic cracking reaction and is distributed
Data；
Model Parameter Optimization unit, if for judging to know the calculating Product distribution data and actual measurement product distribution
The deviation summation of data is more than predetermined threshold value, then the model parameter to the catalytic cracking reaction kinetic model is optimized,
Until the deviation summation is less than or equal to the predetermined threshold value, Optimized model parameter is obtained；
Hard measurement unit, for according to the Optimized model parameter and the catalytic cracking reaction kinetic model, utilizing
The Fluid Mechanics Computation method, obtains the corresponding optimized product distributed data of the different operating modes of catalytic cracking reaction, by the optimization
Product distribution data as the catalytic cracking reaction product hard measurement result.
Another further aspect, the embodiment of the present invention provides a kind of electronics chosen for catalytic cracking reaction hard measurement auxiliary variable
Equipment, including：
At least one processor；And
At least one memory being connected with the processor communication, wherein：
The memory storage, which has, to call described program to refer to by the programmed instruction of the computing device, the processor
Order is able to carry out above-mentioned method.
Another aspect, the embodiment of the present invention provides a kind of non-transient computer readable storage medium storing program for executing, the non-transient calculating
Machine readable storage medium storing program for executing stores computer instruction, and the computer instruction makes the computer perform the above method.
The method and system of the catalytic cracking reaction product hard measurement that example is provided in real time of the invention, utilizes Fluid Mechanics Computation
Method CFD carries out the numerical simulation of catalytic cracking reaction, and the model parameter of catalytic cracking reaction kinetic model is optimized,
The model parameter of the catalytic cracking reaction kinetic model for the condition that meets is obtained, Fluid Mechanics Computation method CFD is re-used and carries out
The numerical simulation of catalytic cracking reaction, obtains the optimized product distributed data of final acquisition catalytic cracking reaction, realizes catalysis
Reaction product hard measurement.Catalytic cracking reaction kinetic model is combined with Fluid Mechanics Computation method CFD, by optimizing power
Model parameter is learned, catalytic cracking reaction product hard measurement is realized, improves the precision of catalytic cracking reaction product hard measurement result.
In addition, the embodiment of the present invention is when catalytic cracking operating mode changes, it is only necessary to corresponding adjustment catalytic cracking reaction dynamics
The model parameter of model, you can the corresponding calculating Product distribution data of the different operating modes of acquisition, realizes the catalytic cracking of different operating modes
Reaction product hard measurement, improves the adaptability of catalytic cracking reaction flexible measurement method.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of catalytic cracking reaction product flexible measurement method in the embodiment of the present invention；
Fig. 2 is the reaction network schematic diagram of ten four-lump kinetics models in the embodiment of the present invention；
Fig. 3 is the schematic flow sheet of another catalytic cracking reaction product flexible measurement method in the embodiment of the present invention；
Fig. 4 shows for the flow for carrying out catalytic cracking reaction numerical simulation using Fluid Mechanics Computation method in the embodiment of the present invention
It is intended to；
Fig. 5 is the schematic flow sheet of the method for another catalytic cracking reaction product hard measurement in the embodiment of the present invention；
Fig. 6 be the embodiment of the present invention in carry out Model Parameter Optimization when fitness function curve synoptic diagram；
Fig. 7 is the structural representation of catalytic cracking reaction product hard measurement system in the embodiment of the present invention；
Fig. 8 be the embodiment of the present invention in be used for catalytic cracking reaction product hard measurement electronic equipment structural representation.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Fig. 1 is the schematic flow sheet of catalytic cracking reaction product flexible measurement method in the embodiment of the present invention, as shown in figure 1,
The method of catalytic cracking reaction product hard measurement provided in an embodiment of the present invention includes：
S1, the corresponding floor data of the different operating modes of collection catalytic cracking reaction, the floor data include Catalytic Cracking Unit of Measure
The actual measurement Product distribution data and duty parameter answered；
Specifically, the corresponding floor data of the different operating modes of catalytic cracking reaction is gathered as needed, and floor data includes urging
Change the actual measurement Product distribution data and duty parameter of cracking reaction.Wherein duty parameter includes：Temperature data, pressure data and stream
Data are measured, actual measurement Product distribution data includes：Dry gas yield, yield of liquefied gas, yield of gasoline, diesel yield and coking yield.
Duty parameter can gather the number for obtaining real-time working condition parameter or being preserved from plant historian by industrial site
According to middle acquisition history duty parameter.The duty parameter collected is designated as data matrix and is designated as C, data matrix by the embodiment of the present invention
In include but is not limited to：1) temperature data：Gas outlet temperature, fresh feed temperature, freshening oil temperature, reprocessed oil slurry temperature,
Atomizing steam temperature, pre-lift vapor (steam) temperature and catalyst temperature；2) pressure data：Reactor outlet pressure, reactor pressure
Drop；3) data on flows：Fresh feed flow, recycle oil flow, reprocessed oil slurry flow, the mass flow of catalyst, pre-lift are steamed
Vapour amount, atomizing steam amount.It is the real-time actual measurement Product distribution data or history number that Site Detection is obtained to survey Product distribution data
Product distribution data is surveyed according to the history stored in storehouse.Actual measurement product point in real time can be obtained by industrial site collection
History actual measurement Product distribution data is obtained in cloth data or the data preserved from plant historian, the embodiment of the present invention can
P is designated as so that actual measurement Product distribution data is designated as into data matrix.
Wherein floor data can be obtained by the monitoring system or catalytic cracking DCS system of catalytic cracking unit, or logical
Other modes acquisition is crossed, the embodiment of the present invention is not especially limited.
S2, according to the duty parameter, the catalytic cracking reaction dynamics for utilizing Fluid Mechanics Computation method to set up pre-selection
Model carries out numerical simulation, obtains the corresponding calculating Product distribution data of the different operating modes of catalytic cracking reaction；
Specifically, get after the floor data of catalytic reaction, Fluid Mechanics Computation method is utilized according to these floor datas
CFD (Computational fluid dynamics) carries out Numerical-Mode to the catalytic cracking reaction kinetic model that pre-selection is set up
Intend, obtain the corresponding calculating Product distribution data of the different operating modes of catalytic cracking reaction.I.e. according to the corresponding operating mode number of different operating modes
According to the corresponding calculating Product distribution data of acquisition.
If S3, judgement know that the deviation summation of the calculating Product distribution data and the actual measurement Product distribution data is more than
Predetermined threshold value, then the model parameter to the catalytic cracking reaction kinetic model is optimized, until the deviation summation is small
In or equal to the predetermined threshold value, Optimized model parameter is obtained；
Specifically, the calculating Product distribution data got and the actual measurement Product distribution data collected in advance are made poor,
Judge whether calculate Product distribution data and the deviation summation of actual measurement Product distribution data is more than predetermined threshold value, to urging if being more than
The model parameter for changing cracking reaction kinetic model is optimized, until the deviation summation is less than or equal to the default threshold
Value, obtains Optimized model parameter；If the deviation summation for calculating Product distribution data and actual measurement Product distribution data is less than or equal to
Predetermined threshold value, then regard the model parameter of catalytic cracking reaction kinetic model now as Optimized model parameter.
S4, according to the Optimized model parameter and the catalytic cracking reaction kinetic model, utilize the calculating fluid
Mechanical Method, obtains the corresponding optimized product distributed data of the different operating modes of catalytic cracking reaction, by the optimized product distributed data
It is used as the result of the catalytic cracking reaction product hard measurement.
Specifically, according to Optimized model parameter and catalytic cracking reaction kinetic model, Fluid Mechanics Computation method is utilized
CFD, obtains the corresponding optimized product distributed data of the different operating modes of catalytic cracking reaction, regard optimized product distributed data as catalysis
The result of cracked reaction product hard measurement, realizes the product hard measurement under the different operating modes of catalytic cracking reaction.
It should be noted that when the operating mode of catalytic cracking reaction changes, floor data is adjusted accordingly, and urge
Change the model parameter of cracking reaction kinetic model, re-execute step S2-S4, obtain corresponding catalysis under new working condition
The optimized product distributed data of cracking reaction, realizes the catalytic cracking reaction product hard measurement of different operating modes.
The method of the catalytic cracking reaction product hard measurement that example is provided in real time of the invention, utilizes Fluid Mechanics Computation method CFD
The numerical simulation of catalytic cracking reaction is carried out, and the model parameter of catalytic cracking reaction kinetic model is optimized, is obtained
The model parameter of the catalytic cracking reaction kinetic model of condition is met, Fluid Mechanics Computation method CFD is re-used and is catalyzed
The numerical simulation of cracking reaction, obtains the optimized product distributed data of final acquisition catalytic cracking reaction, realizes catalytic reaction
Product hard measurement.Catalytic cracking reaction kinetic model is combined with Fluid Mechanics Computation method CFD, by optimizing kinetic simulation
Shape parameter, realizes catalytic cracking reaction product hard measurement, improves the precision of catalytic cracking reaction product hard measurement result.This
Outside, the embodiment of the present invention is when catalytic cracking operating mode changes, it is only necessary to corresponding adjustment catalytic cracking reaction kinetic simulation
The model parameter of type, you can the corresponding calculating Product distribution data of the different operating modes of acquisition, realizes the Catalytic Cracking Unit of Measure of different operating modes
Product hard measurement is answered, the adaptability of catalytic cracking reaction flexible measurement method is improved.
On the basis of above-described embodiment, the utilization Fluid Mechanics Computation method is moved to the catalytic cracking reaction that pre-selection is set up
Mechanical model carries out numerical simulation, obtains the corresponding calculating Product distribution data of the different operating modes of catalytic cracking reaction, including：
If the numerical simulation is first simulation, model parameter initial value is set, and according to the corresponding institute of different operating modes
Duty parameter is stated, parameter of a flow model is set；
According to the model parameter initial value and the parameter of a flow model, pre-selection is set up using Fluid Mechanics Computation method
Catalytic cracking reaction kinetic model carry out numerical simulation, obtain that different operating modes described in catalytic cracking reaction are corresponding to calculate production
Thing distributed data.
Specifically, when carrying out catalytic cracking reaction numerical simulation for the first time, it is necessary to set catalytic cracking kinetic model
Model parameter initial value, specifically can rule of thumb be configured, or be set using other method, and the embodiment of the present invention is not made to have
Body is limited.Set after the model parameter initial value of catalytic cracking kinetic model, according to the corresponding duty parameter of different operating modes,
Set parameter of a flow model.According to model parameter initial value and parameter of a flow model, using Fluid Mechanics Computation method CFD to pre-selection
The catalytic cracking reaction kinetic model of foundation carries out numerical simulation, obtains corresponding calculate of the different operating modes of catalytic cracking reaction and produces
Thing distributed data.
Wherein, catalytic cracking reaction kinetic model, which belongs in reaction model, actual industrial reactor, also has complexity
Gas-particle Flows, heat transfer, mass transfer, description Gas-particle Flows, heat transfer equation be called flow model (because heat transfer can be regarded as heat
Amount flowing, mass transfer are considered as component flowing, and flow model or TRANSFER MODEL are typically referred to as in chemical industry).Flowing can shadow
Reaction is rung, reaction can also influence flowing in turn, and flow model and reaction model are coupled together, that is, utilized by the embodiment of the present invention
Fluid Mechanics Computation method CFD carries out numerical simulation to the catalytic cracking reaction kinetic model that pre-selection is set up, so that what is obtained urges
Change the corresponding Product distribution data that calculates of the different operating modes of cracking reaction more accurate, further improve catalytic cracking reaction product soft
The accuracy of the measurement result of measurement.
Wherein, according to model parameter initial value and parameter of a flow model, pre-selection is set up using Fluid Mechanics Computation method CFD
Catalytic cracking reaction kinetic model carry out numerical simulation process it is as follows：
1) 3-D geometric model of catalytic cracking riser is set up；
2) mesh generation is carried out to 3-D geometric model in 1)；
3) each entry condition, boundary condition and flow field are set using the duty parameter of the catalytic cracking reaction of pre-selection collection
Primary condition, sets parameter of a flow model；
4) according to the model parameter initial value of catalytic cracking reaction kinetic model, reaction model is set；
5) catalytic cracking riser is solved using solver, obtains calculating Product distribution data.
On the basis of above-described embodiment, if the calculating Product distribution data and the actual measurement product are known in the judgement
The deviation summation of distributed data is more than predetermined threshold value, then the model parameter progress to the catalytic cracking reaction kinetic model is excellent
Change, including：
If judgement knows that the deviation summation is more than predetermined threshold value, the model parameter is carried out using genetic algorithm excellent
Change.
Specifically, get after the calculating Product distribution data of catalytic cracking reaction, judge calculate Product distribution data and
Whether the deviation summation for surveying Product distribution data is more than predetermined threshold value.If being more than, using genetic algorithm to catalysis now
The model parameter of cracking reaction kinetic model is optimized, until calculating Product distribution data and surveying Product distribution data
Deviation summation is less than or equal to predetermined threshold value, obtains Optimized model parameter.The Optimized model parameter is substituted into the catalysis to split
Change reaction Kinetics Model, using the Fluid Mechanics Computation method, numerical value is carried out to the catalytic cracking reaction kinetic model
Simulation, obtains the optimized product distributed data.The Optimized model model parameter obtained according to optimization, resets catalysis and splits
Change the reaction model of reaction, numerical simulation is carried out to catalytic cracking reaction kinetic model using Fluid Mechanics Computation method CFD, obtained
Obtain the optimized product distributed data of catalytic cracking reaction.
On the basis of above-described embodiment, the catalytic cracking reaction kinetic model is ten four-lump kinetics models.
Specifically, the catalytic cracking reaction kinetic model that the embodiment of the present invention is used for ten four-lump kinetics models,
It is a kind of reaction Kinetics Model simplified with lumping strategy, and reaction system is divided into 14 lumps, specific partiting step
For：Feedstock oil is divided into diesel oil layer (l), recycle oil-wax oil layer (m) and decompression residuum-slurry oil layer according to its flow scope first
(h) three layers, each layer is constituted according to structural group is divided into alkyl carbon (P), cycloalkanes carbon (N) and aromatic carbon (A) again.Due to decompression residuum
With there is polycyclic aromatic hydrocarbon in slurry oil, further collected by increasing new polycyclic aromatic hydrocarbon (Fah) in decompression residuum and slurry oil
Always.Finally, it is considered to coke (CK), gasoline (GO), natural gas (LPG) and dry gas (DG), 14 lumps for obtaining feedstock oil are drawn
Point.
Fig. 2 is the reaction network schematic diagram of ten four-lump kinetics models in the embodiment of the present invention, as shown in Fig. 2 14
Lumped reaction kinetics are related to 49 reactions altogether.Ten four-lump kinetics models are related to 49 kinetic parameters undetermined, i.e. frequency
Factor K, K is the vector that dimension is 49, the chemical reaction rate expression of ten each gaseous components of four-lump kinetics model (lump)
Formula is equation below (1)：
In formula：A0--- represent catalyst activity correction factor；
--- represent the effective active of catalyst, KhAttach most importance to aromatic ring absorption constant；
Φ(Cc)=(1+0.51Cc)-2.78--- represent the influence factor of catalyst coking；
Cc--- represent catalyst coking yield percentage；
kj--- lump j reaction rate constant is represented,k0Represent pre-exponential factor；
E --- represent activation energy；
εg--- represent voidage；
ραj--- represent lump j molar concentration.
Fig. 3 is the schematic flow sheet of another catalytic cracking reaction product flexible measurement method in the embodiment of the present invention, such as Fig. 3 institutes
Show, with reference to certain refinery catalytic cracking device riser reactor actual production data, specifically introduce the embodiment of the present invention
Technical scheme：
The catalytically cracked material property of the operating mode 1 of table 101
| Project | Unit | Numerical value |
| Oil density | [kg/m3] | 914.8 |
| Viscosity under different temperatures | mm2/s | 33.57(50℃)/6.493(100℃) |
| Basic n content | [ppmwt] | 728 |
| Total nitrogen content | [ppmwt] | 2776 |
| Sulfur content | [%] | 0.5412 |
| Conradson carbon residue | [%] | 3.86 |
| Content of vanadium | [ppmwt] | 5 |
| Nickel content | [ppmwt] | 15 |
| Sodium content | [ppmwt] | 10 |
| Iron content | [ppmwt] | 10 |
| Copper content | [ppmwt] | 0.3 |
The equilibrium catalyst property of the operating mode 1 of table 102
| Project | Data |
| Activity | 63 |
| Compare surface | 118 |
| Pore volume | 0.3 |
| Heap ratio | 0.85 |
| Carbon | 0.056 |
| 0-20μm | 0 |
| 0-40μm | 8.9 |
| 0-80μm | 54.8 |
| 0-105μm | 75.3 |
| 0-149μm | 92.7 |
| APS | 75.4 |
| Iron | 5410 |
| Nickel | 3760 |
| Vanadium | 1800 |
| Nickel vanadium ratio | 2.09 |
| Sodium | 3800 |
| Antimony | 1960 |
| Antimony nickel ratio | 0.52 |
| Calcium | 6150 |
The riser operation condition of the operating mode 1 of table 103
| Project | Unit | Numerical value |
| Feedstock oil treating capacity | [t/h] | 152 |
| Atomizing steam mass flowrate | [t/h] | 9.6 |
| Lift medium volume/mass flowrate | [NM3/h] | Dry gas/4574 |
| Rich gas mass flowrate | [NM3/h] | 41472 |
| Flue gas cooling water speed | [kg/h] | Smokeless cooling water |
| Temperature of charge | [C] | 220 |
| Atomizing steam temperature | [C] | 290 |
| Outlet temperature of riser | [C] | 520±2 |
| Lift medium temperature | [C] | 37-38 |
| Stripping gas temperature | [C] | 400 |
| Rich gas temperature | [C] | 35.5 |
| Air-blaster delivery temperature | [C] | 170 |
| Environment temperature | [C] | 20 |
| Material pressure | [kPa] | 800 |
| Atomizing steam pressure | [kPa] | 1000 |
| Lift pressure medium | [kPa] | 1000 |
| Strip atmospheric pressure | [kPa] | 1000 |
| Rich gas pressure | [kPa] | 1090 |
| Environmental pressure | [kPa] | 101 |
| Reactor pressure | [kPa] | 170 |
| Regenerator pressure | [kPa] | 200 |
| Dense bed bulk density | [kg/m3] | 480 |
| Material mixing temperature | [C] | 551.4 |
| Material preheating temperature | [C] | 220 |
| Riser mixing temperature | [C] | 550 |
| Outlet temperature of riser | [C] | 520 |
| Regenerator dense bed temperature | [C] | 680 |
| Regenerator rotation point temperature | [C] | 680、705 |
| Flue-gas temperature | [C] | 647 |
| Catalyst circulation rate | [t/h] | 1156 |
| Coke content in regenerated catalyst | [%] | 0.08 |
| Oil ratio | 7-8 | |
| Catalyst inventory | [kg] | 180000 |
| The supplement speed of fresh catalyst | [t/h] | 0.3 |
| Recycle ratio | 18~20% |
T1, gathered data.The creation data that is collected from catalytic cracking unit production scene, laboratory assay data, i.e.,
Floor data is gathered, mainly includes duty parameter C and actual measurement Product distribution data P, 1 time parameter of certain operating mode such as table 101~103
It is shown.
T2, the ten four-lump kinetics models for setting up catalytic cracking reaction.The specific foundation of ten four-lump kinetics models
Method is consistent with above-described embodiment, and here is omitted.
T3, acquisition calculate Product distribution data.The Three-dimensional simulation model of catalytic cracking reaction is set up, by step T2
The ten four-lump kinetics models set up substitute into three-dimensional numerical value numerical simulator, are carried out using computational fluid dynamics
Calculate, obtain calculating Product distribution data Y.According to Three-dimensional simulation model, counted using computational fluid dynamics
The method for calculating Product distribution data Y is as follows：
1) 3-D geometric model of catalytic cracking riser is set up；
2) mesh generation is carried out to the 3-D geometric model of catalytic cracking riser；
3) each entry condition, boundary condition and flow field primary condition are set using the duty parameter C gathered in step T1,
Set parameter of a flow model；
4) using the ten four-lump kinetics models and model parameter K in step T2, reaction model is set.For the model
Parameter K, if first calculate, is calculated using model parameter initial value, if not first calculate, is then used after optimizing in step T4
Optimized model parameter calculated；
5) riser is solved using solver, obtains calculating Product distribution data Y.
T4, setting fitness function.By the actual measurement Product distribution data P's calculated in Product distribution data Y and step T1
Deviation summation is defined as fitness function, if more than predetermined threshold value TOL, being optimized using genetic algorithm to model parameter K,
Obtain Optimized model parameter.
T5, model parameter optimization.The Three-dimensional simulation mould that Optimized model parameter after optimization is substituted into step T3
Type, repeats T3-T4, until fitness function is less than or equal to predetermined threshold value TOL.Solved for computational fluid dynamics
Detailed process not in the range of the narration of the embodiment of the present invention, with business software, open source software or oneself can write code
Calculated.Fig. 4 is the flow in the embodiment of the present invention using Fluid Mechanics Computation method progress catalytic cracking reaction numerical simulation
Fortran language can be used to write code calculating in schematic diagram, the embodiment of the present invention.
The contrast (wt%) of riser reactor numerical simulation calculation result and commercial plant data under the original operating mode of table 2
| Composition | Dry gas | Liquefied gas | Gasoline | Diesel oil | Coke |
| Industry value | 3.75 | 16.36 | 41.65 | 29.03 | 7.53 |
| The analogue value | 3.60 | 16.13 | 40.52 | 28.22 | 7.55 |
Frequency factor pair is answered in the reaction network of table 3 pre-exponential factor and activation energy
Result of calculation and analog result after the operating mode of table 4 changes
| Product | Dry gas | Liquefied gas | Gasoline | Diesel oil | Coke |
| Industrial actual value | 4.01 | 18.42 | 37.75 | 30.23 | 7.78 |
| The GA-CFD analogues value | 3.78 | 18.43 | 37.74 | 30.23 | 7.30 |
| Relative error | 6.08% | 0.05% | 0.03% | 0.00% | 6.50% |
T6, hard measurement result are obtained.When operating mode does not change, calculated and produced with step T3 Three-dimensional simulation model
Thing distributed data Y is used as hard measurement result.When operating mode changes, invocation step T4 to step T5 is carried out to model parameter
Adapt to adjustment.Fig. 5 is the schematic flow sheet of the method for another catalytic cracking reaction product hard measurement in the embodiment of the present invention, is such as schemed
Shown in 5, when working conditions change, Fig. 1 dotted portions will be had an effect, and model parameter is adjusted automatically.When operation operating mode hair
During changing, the model after being corrected in a short time adapts to operation working conditions change.The embodiment of the present invention is counted by coupling
Ten four-lump kinetics of fluid operator mechanics CFD approach and the three-dimensional flow-reaction coupled model of genetic algorithm to catalytic cracking reaction
The model parameter of model is corrected, and hard measurement result is had good precision and adaptability.
Under operating mode 1, as shown in table 2, when working conditions change, model parameter is adjusted result of calculation automatically.Fig. 6 is this hair
The curve synoptic diagram of fitness function during Model Parameter Optimization is carried out in bright embodiment, as shown in fig. 6, after operating mode changes, utilizing
Genetic algorithm carries out the adjustment and optimization of model parameter, and after 400 iteration, fitness curve tends to be steady, and now 49
Individual model parameter is optimal solution, that is, obtains Optimized model parameter.
By in the flow-reaction coupled model for optimizing the Optimized model parameter substitution catalytic cracking riser reactor obtained, pass through
Calculate and obtain product yield at leg outlet, and by calculated value and industrial actual comparison, such as table 4.
The method of the catalytic cracking reaction product hard measurement that example is provided in real time of the invention, utilizes Fluid Mechanics Computation method CFD
The numerical simulation of catalytic cracking reaction is carried out, and the model parameter of catalytic cracking reaction kinetic model is optimized, is obtained
The model parameter of the catalytic cracking reaction kinetic model of condition is met, Fluid Mechanics Computation method CFD is re-used and is catalyzed
The numerical simulation of cracking reaction, obtains the optimized product distributed data of final acquisition catalytic cracking reaction, realizes catalytic reaction
Product hard measurement.Catalytic cracking reaction kinetic model is combined with Fluid Mechanics Computation method CFD, by optimizing kinetic simulation
Shape parameter, realizes catalytic cracking reaction product hard measurement, improves the precision of catalytic cracking reaction product hard measurement result.This
Outside, the embodiment of the present invention is when catalytic cracking operating mode changes, it is only necessary to corresponding adjustment catalytic cracking reaction kinetic simulation
The model parameter of type, you can the corresponding calculating Product distribution data of the different operating modes of acquisition, realizes the Catalytic Cracking Unit of Measure of different operating modes
Product hard measurement is answered, the adaptability of catalytic cracking reaction flexible measurement method is improved.
Fig. 7 is the structural representation of catalytic cracking reaction product hard measurement system in the embodiment of the present invention, as shown in fig. 7,
Catalytic cracking reaction product hard measurement system provided in an embodiment of the present invention includes data acquisition unit 71, calculates product distribution list
Member 72, Model Parameter Optimization unit 73 and hard measurement unit 74, wherein：
Data acquisition unit 71 is used to gather the corresponding floor data of the different operating modes of catalytic cracking reaction, the floor data
Actual measurement Product distribution data and duty parameter including catalytic cracking reaction；Calculating product distribution unit 72 is used for according to the work
Condition parameter, carries out numerical simulation to the catalytic cracking reaction kinetic model that pre-selection is set up using Fluid Mechanics Computation method, obtains
The corresponding calculating Product distribution data of catalytic cracking reaction difference operating mode；If Model Parameter Optimization unit 73 is used to judge to know institute
The deviation summation for calculating Product distribution data and the actual measurement Product distribution data is stated more than predetermined threshold value, then the catalysis is split
The model parameter for changing reaction Kinetics Model is optimized, until the deviation summation is less than or equal to the predetermined threshold value, is obtained
Obtain Optimized model parameter；Hard measurement unit 74 is used for according to the Optimized model parameter and the catalytic cracking reaction kinetic simulation
Type, using the Fluid Mechanics Computation method, obtains the optimized product distributed data of catalytic cracking reaction, by the optimized product point
Cloth data as the catalytic cracking reaction product hard measurement result.
Specifically, data acquisition unit 71 gathers the corresponding floor data of the different operating modes of catalytic cracking reaction as needed,
Floor data includes the actual measurement Product distribution data and duty parameter of catalytic cracking reaction.Wherein duty parameter includes：Temperature number
According to, pressure data and data on flows, actual measurement Product distribution data includes：Dry gas yield, yield of liquefied gas, yield of gasoline, diesel oil
Yield and coking yield.Duty parameter can obtain real-time working condition parameter or from factory's history number by industrial site collection
According to acquisition history duty parameter in the data preserved in storehouse.Actual measurement product point in real time can be obtained by industrial site collection
History actual measurement Product distribution data is obtained in cloth data or the data preserved from plant historian.Get catalytic reaction
Floor data after, calculate product distribution unit 72 and utilize Fluid Mechanics Computation method CFD according to these floor datas
(Computational fluid dynamics) carries out numerical simulation to the catalytic cracking reaction kinetic model that pre-selection is set up,
Obtain the corresponding calculating Product distribution data of the different operating modes of catalytic cracking reaction.Obtained according to the corresponding floor data of different operating modes
Take corresponding calculating Product distribution data.Model Parameter Optimization unit 73 is by the calculating Product distribution data got and adopts in advance
It is poor that the actual measurement Product distribution data collected is made, and judges that calculating Product distribution data and the deviation summation of actual measurement Product distribution data is
It is no to be more than predetermined threshold value, optimized if the model parameter to catalytic cracking reaction kinetic model more than if, until described inclined
Poor summation is less than or equal to the predetermined threshold value, obtains Optimized model parameter；If calculating Product distribution data and actual measurement product point
The deviation summation of cloth data is less than or equal to predetermined threshold value, then by the model parameter of catalytic cracking reaction kinetic model now
It is used as Optimized model parameter.Hard measurement unit 74 utilizes meter according to Optimized model parameter and catalytic cracking reaction kinetic model
Fluid operator Mechanical Method CFD, obtains the corresponding optimized product distributed data of the different operating modes of catalytic cracking reaction, optimized product is distributed
Data realize the product hard measurement under the different operating modes of catalytic cracking reaction as the result of catalytic cracking reaction product hard measurement.
It should be noted that when the operating mode of catalytic cracking reaction changes, floor data is adjusted accordingly, and urge
Change the model parameter of cracking reaction kinetic model, by the new corresponding floor data of work condition environment and catalytic cracking reaction power
The model parameter input for learning model calculates product distribution unit 72, Model Parameter Optimization unit 73 and hard measurement unit 74, again
The hard measurement of catalytic cracking reaction product is carried out, the optimized product point of corresponding catalytic cracking reaction under new working condition is obtained
Cloth data, realize the catalytic cracking reaction product hard measurement of different operating modes.The embodiment of the present invention is by coupling Fluid Mechanics Computation
The model of CFD approach and the three-dimensional flow-reaction coupled model of genetic algorithm to ten four-lump kinetics models of catalytic cracking reaction
Parameter is corrected, and hard measurement result is had good precision and adaptability.
Wherein, the catalytic cracking reaction kinetic model that the embodiment of the present invention is used for ten four-lump kinetics models, its
It is a kind of reaction Kinetics Model simplified with lumping strategy, the method for building up of the model is consistent with above-described embodiment, herein
Repeat no more.
System provided in an embodiment of the present invention is used to perform the above method, and its embodiment is with above-described embodiment one
Cause, here is omitted.
The method and system of the catalytic cracking reaction product hard measurement that example is provided in real time of the invention, utilizes Fluid Mechanics Computation
Method CFD carries out the numerical simulation of catalytic cracking reaction, and the model parameter of catalytic cracking reaction kinetic model is optimized,
The model parameter of the catalytic cracking reaction kinetic model for the condition that meets is obtained, Fluid Mechanics Computation method CFD is re-used and carries out
The numerical simulation of catalytic cracking reaction, obtains the optimized product distributed data of final acquisition catalytic cracking reaction, realizes catalysis
Reaction product hard measurement.Catalytic cracking reaction kinetic model is combined with Fluid Mechanics Computation method CFD, by optimizing power
Model parameter is learned, catalytic cracking reaction product hard measurement is realized, improves the precision of catalytic cracking reaction product hard measurement result.
In addition, the embodiment of the present invention is when catalytic cracking operating mode changes, it is only necessary to corresponding adjustment catalytic cracking reaction dynamics
The model parameter of model, you can the corresponding calculating Product distribution data of the different operating modes of acquisition, realizes the catalytic cracking of different operating modes
Reaction product hard measurement, improves the adaptability of catalytic cracking reaction flexible measurement method.
Fig. 8 be the embodiment of the present invention in be used for catalytic cracking reaction product hard measurement electronic equipment structural representation,
As shown in figure 8, described device can include：Processor (processor) 81, memory (memory) 82 and communication bus 83,
Wherein, processor 81, memory 82 completes mutual communication by communication bus 83.Processor 81 can call memory 82
In logical order, to perform following method：Gather the corresponding floor data of the different operating modes of catalytic cracking reaction, the operating mode number
According to actual measurement Product distribution data and duty parameter including catalytic cracking reaction；According to the duty parameter, using calculating fluid
Mechanical Method carries out numerical simulation to the catalytic cracking reaction kinetic model that pre-selection is set up, and obtains the different operating modes of catalytic cracking reaction
Corresponding calculating Product distribution data；If judging to know the calculating Product distribution data and the actual measurement Product distribution data
Deviation summation is more than predetermined threshold value, then the model parameter to the catalytic cracking reaction kinetic model is optimized, until institute
Deviation summation is stated less than or equal to the predetermined threshold value, Optimized model parameter is obtained；According to the Optimized model parameter and described
Catalytic cracking reaction kinetic model, using the Fluid Mechanics Computation method, obtains the different operating modes of catalytic cracking reaction corresponding
Optimized product distributed data, using the optimized product distributed data as the catalytic cracking reaction product hard measurement result.
In addition, the logical order in above-mentioned memory 82 can be realized by the form of SFU software functional unit and is used as solely
Vertical production marketing in use, can be stored in a computer read/write memory medium.Understood based on such, this hair
The part or the part of the technical scheme that bright technical scheme substantially contributes to prior art in other words can be with soft
The form of part product is embodied, and the computer software product is stored in a storage medium, including some instructions are to make
Obtain a computer equipment (can be personal computer, server, or network equipment etc.) and perform each embodiment of the invention
The all or part of step of methods described.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM,
Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. it is various
Can be with the medium of store program codes.
The embodiment of the present invention provides a kind of non-transient computer readable storage medium storing program for executing, the non-transient computer readable storage
Medium storing computer is instructed, and the computer instruction makes the computer perform the side that above-mentioned each method embodiment is provided
Method, for example including：The corresponding floor data of the different operating modes of catalytic cracking reaction is gathered, the floor data includes Catalytic Cracking Unit of Measure
The actual measurement Product distribution data and duty parameter answered；According to the duty parameter, pre-selection is set up using Fluid Mechanics Computation method
Catalytic cracking reaction kinetic model carry out numerical simulation, obtain that the different operating mode of catalytic cracking reaction is corresponding to calculate product point
Cloth data；If judging the deviation summation for knowing the calculating Product distribution data and the actual measurement Product distribution data more than default
Threshold value, then the model parameter to the catalytic cracking reaction kinetic model optimize, until the deviation summation be less than or
Equal to the predetermined threshold value, Optimized model parameter is obtained；According to the Optimized model parameter and the catalytic cracking reaction power
Model is learned, using the Fluid Mechanics Computation method, the corresponding optimized product distributed data of the different operating modes of catalytic cracking reaction is obtained,
Using the optimized product distributed data as the catalytic cracking reaction product hard measurement result.
Above example is merely to illustrate technical scheme, rather than its limitations；Although with reference to the foregoing embodiments
The present invention is described in detail, it will be understood by those within the art that：It still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic；And these are changed or replaced
Change, the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a kind of method of catalytic cracking reaction product hard measurement, it is characterised in that including：
The corresponding floor data of the different operating modes of catalytic cracking reaction is gathered, the floor data includes the actual measurement of catalytic cracking reaction
Product distribution data and duty parameter；
According to the duty parameter, the catalytic cracking reaction kinetic model that pre-selection is set up is carried out using Fluid Mechanics Computation method
Numerical simulation, obtains the corresponding calculating Product distribution data of the different operating modes of catalytic cracking reaction；
If judging, the deviation summation for knowing the calculating Product distribution data and the actual measurement Product distribution data is more than default threshold
Value, then the model parameter to the catalytic cracking reaction kinetic model is optimized, until the deviation summation is less than or waited
In the predetermined threshold value, Optimized model parameter is obtained；
According to the Optimized model parameter and the catalytic cracking reaction kinetic model, using the Fluid Mechanics Computation method,
The corresponding optimized product distributed data of the different operating mode of catalytic cracking reaction is obtained, using the optimized product distributed data as described
The result of catalytic cracking reaction product hard measurement.
2. according to the method described in claim 1, it is characterised in that the utilization Fluid Mechanics Computation method is urged pre-selection foundation
Change cracking reaction kinetic model and carry out numerical simulation, obtain the corresponding calculating product distribution number of the different operating modes of catalytic cracking reaction
According to, including：
If the numerical simulation is first simulation, model parameter initial value is set, and according to the corresponding work of different operating modes
Condition parameter, sets parameter of a flow model；
According to the model parameter initial value and the parameter of a flow model, pre-selection foundation is urged using Fluid Mechanics Computation method
Change cracking reaction kinetic model and carry out numerical simulation, obtain the corresponding calculating product point of difference operating modes described in catalytic cracking reaction
Cloth data.
3. according to the method described in claim 1, it is characterised in that if the judgement know the calculating Product distribution data and
The deviation summation of the actual measurement Product distribution data is more than predetermined threshold value, then to the mould of the catalytic cracking reaction kinetic model
Shape parameter is optimized, including：
If judgement knows that the deviation summation is more than predetermined threshold value, the model parameter is optimized using genetic algorithm.
4. according to the method described in claim 1, it is characterised in that described to be split according to the Optimized model parameter and the catalysis
Change reaction Kinetics Model, using the Fluid Mechanics Computation method, obtain the optimized product distributed data of catalytic cracking reaction, bag
Include：
The Optimized model parameter is substituted into the catalytic cracking reaction kinetic model, using the Fluid Mechanics Computation method,
Numerical simulation is carried out to the catalytic cracking reaction kinetic model, the optimized product distributed data is obtained.
5. according to the method described in claim 1, it is characterised in that the catalytic cracking reaction kinetic model is 14 lumps
Kinetic model.
6. according to the method described in claim 1, it is characterised in that the duty parameter includes：Temperature data, pressure data and
Data on flows.
7. according to the method described in claim 1, it is characterised in that the actual measurement Product distribution data includes：Dry gas yield, liquid
Change gas yield, yield of gasoline, diesel yield and coking yield.
8. a kind of system of catalytic cracking reaction product hard measurement, it is characterised in that including：
Data acquisition unit, for gathering the corresponding floor data of the different operating modes of catalytic cracking reaction, the floor data includes
The actual measurement Product distribution data and duty parameter of catalytic cracking reaction；
Product distribution unit is calculated, for according to the duty parameter, using Fluid Mechanics Computation method to preselecting the catalysis set up
Cracking reaction kinetic model carries out numerical simulation, obtains the corresponding calculating product distribution number of the different operating modes of catalytic cracking reaction
According to；
Model Parameter Optimization unit, if for judging to know the calculating Product distribution data and the actual measurement Product distribution data
Deviation summation be more than predetermined threshold value, then the model parameter to the catalytic cracking reaction kinetic model optimize, until
The deviation summation is less than or equal to the predetermined threshold value, obtains Optimized model parameter；
Hard measurement unit, for according to the Optimized model parameter and the catalytic cracking reaction kinetic model, using described
Fluid Mechanics Computation method, obtains the corresponding optimized product distributed data of the different operating modes of catalytic cracking reaction, by the optimized product
Distributed data as the catalytic cracking reaction product hard measurement result.
9. a kind of electronic equipment for catalytic cracking reaction product hard measurement, it is characterised in that including：
At least one processor；And
At least one memory being connected with the processor communication, wherein：
The memory storage has can be by the programmed instruction of the computing device, and the processor calls described program to instruct energy
Enough perform the method as described in any one of claim 1 to 7.
10. a kind of non-transient computer readable storage medium storing program for executing, it is characterised in that the non-transient computer readable storage medium storing program for executing is deposited
Computer instruction is stored up, the computer instruction makes the computer perform the method as described in any one of claim 1 to 7.
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