CN107305753B - F- T synthesis analogy method and device - Google Patents
F- T synthesis analogy method and device Download PDFInfo
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- CN107305753B CN107305753B CN201610252350.6A CN201610252350A CN107305753B CN 107305753 B CN107305753 B CN 107305753B CN 201610252350 A CN201610252350 A CN 201610252350A CN 107305753 B CN107305753 B CN 107305753B
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- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 118
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 117
- 238000000034 method Methods 0.000 title claims abstract description 65
- 239000000047 product Substances 0.000 claims abstract description 37
- 239000007795 chemical reaction product Substances 0.000 claims abstract description 19
- 238000000926 separation method Methods 0.000 claims abstract description 14
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 64
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 50
- 238000006243 chemical reaction Methods 0.000 claims description 45
- 239000007788 liquid Substances 0.000 claims description 30
- 229910052799 carbon Inorganic materials 0.000 claims description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 22
- 125000003545 alkoxy group Chemical group 0.000 claims description 20
- 239000001569 carbon dioxide Substances 0.000 claims description 17
- 239000003054 catalyst Substances 0.000 claims description 14
- -1 alkene alkane Chemical class 0.000 claims description 6
- 239000007791 liquid phase Substances 0.000 claims description 6
- 239000012071 phase Substances 0.000 claims description 6
- 229960004424 carbon dioxide Drugs 0.000 claims 4
- 238000005261 decarburization Methods 0.000 claims 2
- 229910002090 carbon oxide Inorganic materials 0.000 claims 1
- 239000007789 gas Substances 0.000 description 93
- 238000010586 diagram Methods 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 241000208340 Araliaceae Species 0.000 description 5
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 5
- 235000003140 Panax quinquefolius Nutrition 0.000 description 5
- 235000008434 ginseng Nutrition 0.000 description 5
- 238000004088 simulation Methods 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000010327 methods by industry Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/24—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for chemistry
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/36—Circuit design at the analogue level
- G06F30/367—Design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE], direct methods or relaxation methods
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/18—Manufacturability analysis or optimisation for manufacturability
Abstract
The invention discloses a kind of F- T synthesis analogy method and devices, this method comprises: determining the input condition of Fischer-Tropsch synthesis, input condition includes the parameter of fresh synthesis gas and the parameter of first circulation gas；Model and response parameter needed for selecting Fischer-Tropsch synthesis；The reaction product for carrying out generating after Fischer-Tropsch synthesis is determined according to model needed for input condition, Fischer-Tropsch synthesis and response parameter；Reaction product is separated, product after being separated；Whether the parameter error of the parameter and first circulation gas that judge the second circulation gas in separation product is less than the preset limits of error；When error is not less than the limits of error, it according to the parameter of the parameters revision first circulation gas of second circulation gas and carries out above-mentioned Fischer-Tropsch synthesis again and judges whether the parameter of second circulation gas and the error of the parameter of first circulation gas are less than the preset limits of error, until error is less than the limits of error.It is able to solve the problem of existing analogy method can not be specifically for F- T synthesis.
Description
Technical field
The present invention relates to chemical reaction analogue technique field more particularly to a kind of F- T synthesis analogy method and devices.
Background technique
Currently, being mostly using General-Purpose Simulation Software ASPEN (Advanced System for for F- T synthesis
Process Engineering, the advanced system of process engineering) Plus to Fischer-tropsch process process carry out sunykatuib analysis.The simulation
Software is most common common software in technical study now, is integrated with typical technical module in most of chemical process, grinds
Study carefully personnel and select some unit modules similar with oneself institute's research system from software first, is then combined into these units
Entire technical process, then carry out technical study.
But due to simulation softward versatility in order to balance, user's custom feature is generally all weaker, therefore works as work
When Cheng Shi carries out careful in-depth study to some specific process flows, the specific aim of the simulation softward is with regard to poor.
Summary of the invention
The present invention provides a kind of F- T synthesis analogy method and device, for solving existing General-Purpose Simulation Software for expense
The problem of support synthesis specific aim difference.
To achieve the goals above, the present invention provides a kind of F- T synthesis analogy method, which comprises
Determine that the input condition of Fischer-Tropsch synthesis, the input condition include the parameter and first circulation of fresh synthesis gas
The parameter of gas；
Model needed for selecting the Fischer-Tropsch synthesis and response parameter；
It is determined according to model needed for the input condition, the Fischer-Tropsch synthesis and the response parameter and carries out Fischer-Tropsch
The reaction product generated after synthetic reaction；
The reaction product is separated using vapor liquid equilibrium model, product after being separated, product after the separation
In include second circulation gas；
Whether the parameter error of the parameter and the first circulation gas that judge the second circulation gas is less than preset error
Limit；When the error is not less than the limits of error, according to first circulation gas described in the parameters revision of the second circulation gas
Parameter simultaneously executes the model according to needed for the input condition, the Fischer-Tropsch synthesis and the response parameter is true again
Surely the reaction product generated after Fischer-Tropsch synthesis to the parameter of the judgement second circulation gas is carried out to follow with described first
The step of whether error of the parameter of ring gas is less than the preset limits of error is until the error is less than the limits of error.
Optionally, model and response parameter needed for the selection Fischer-Tropsch synthesis include:
Reaction model needed for selecting the Fischer-Tropsch synthesis, chain growth model, ethylenic alkoxy rate model, catalyst performance ginseng
Several and technological parameter.
Optionally, product includes product liquid, tail gas, carbon dioxide and the second circulation gas, institute after the separation
State method further include:
The error be less than the limits of error when, according to the product liquid, the tail gas, the carbon dioxide and
The circulating air calculates the process data of this Fischer-Tropsch synthesis, obtains target process data.
Optionally, the reaction model includes:
nCO+(2n+1)H2--->CnH2n+2+nH2O
nCO+2nH2--->CnH2n+nH2O
CO+H2O--->CO2+H2
nCO+(m/2+n-p)H2--->CnHmOp+(n-p)H2O；
The chain growth model includes:
Chain growth probability is constant 0.90-0.94 in carbon number > 5；It is preset chain growth probability, institute when carbon number≤5
Stating preset chain growth probability is determined according to experimental data；
The ethylenic alkoxy rate model includes:
Carbon number is the alkene alkane mass ratio of n are as follows: n* β ^ (n-1) * (1- β) ^2*70, β are ethylenic alkoxy rate index；
The catalyst performance parameter includes:
Pre-set CO conversion, carbon dioxide selectivity and oxygenatedchemicals selectivity；
The technological parameter includes:
Pre-set virgin gas air speed, recycle ratio, reaction temperature, reaction pressure, reactor diameter and superficial gas velocity take off
Carbon depth；
The vapor liquid equilibrium model includes:
H2、CO、CO2、CH4、C2H6、C2H4、C3H8、C3H6、C4H10、C4H8And N2It is preset in gas phase and liquid phase
Distribution coefficient.
Optionally, the parameter of the fresh synthesis gas includes: the total tolerance and the fresh conjunction of the fresh synthesis gas
The H for being included at gas2、CO、CO2、CH4And N2The shared percentage in total tolerance of the fresh synthesis gas；
The parameter of the first circulation gas includes: total tolerance of circulating air and the H that the circulating air is included2、CO、
CO2、N2、CH4、C2H6、C2H4、C3H8、C3H6、C4H10、C4H8The shared percentage in total tolerance of the circulating air.
The present invention provides a kind of F- T synthesis simulator, and described device includes:
Setup module, for determining that the input condition of Fischer-Tropsch synthesis, the input condition include fresh synthesis gas
The parameter of parameter and first circulation gas；
The setup module is also used to, model needed for selecting the Fischer-Tropsch synthesis and response parameter；
Reaction module is joined for the model according to needed for the input condition, the Fischer-Tropsch synthesis and the reaction
Number determines the reaction product for carrying out generating after Fischer-Tropsch synthesis；
Separation module, for the reaction product to be separated using vapor liquid equilibrium model, product after being separated, institute
Stating includes second circulation gas in product after separating；
Judgment module, for judging whether the parameter of the second circulation gas and the parameter error of the first circulation gas are small
In the preset limits of error；When the error is not less than the limits of error, according to the parameters revision of the second circulation gas
The parameter of first circulation gas simultaneously executes the model according to needed for the input condition, the Fischer-Tropsch synthesis and institute again
State the parameter of the determining reaction product generate after Fischer-Tropsch synthesis of response parameter to the judgement second circulation gas
The step of whether being less than the preset limits of error with the error of the parameter of the first circulation gas is until the error is less than the mistake
Difference limit.
Optionally, the setup module is used for:
Reaction model needed for selecting the Fischer-Tropsch synthesis, chain growth model, ethylenic alkoxy rate model, catalyst performance ginseng
Several and technological parameter.
Optionally, product includes product liquid, tail gas, carbon dioxide and the second circulation gas, institute after the separation
State device further include:
Computing module is used for when the error is less than the limits of error, according to the product liquid, the tail gas, institute
It states carbon dioxide and the circulating air calculates the process data of this Fischer-Tropsch synthesis, obtain target process data.
Optionally, the reaction model includes:
nCO+(2n+1)H2--->CnH2n+2+nH2O
nCO+2nH2--->CnH2n+nH2O
CO+H2O--->CO2+H2
nCO+(m/2+n-p)H2--->CnHmOp+(n-p)H2O；
The chain growth model includes:
Chain growth probability is constant 0.90-0.94 in carbon number > 5；It is preset chain growth probability, institute when carbon number≤5
Stating preset chain growth probability is determined according to experimental data；
The ethylenic alkoxy rate model includes:
Carbon number is the alkene alkane mass ratio of n are as follows: n* β ^ (n-1) * (1- β) ^2*70, β are ethylenic alkoxy rate index；
The catalyst performance parameter includes:
Pre-set CO conversion, carbon dioxide selectivity and oxygenatedchemicals selectivity；
The technological parameter includes:
Pre-set virgin gas air speed, recycle ratio, reaction temperature, reaction pressure, reactor diameter and superficial gas velocity take off
Carbon depth；
The vapor liquid equilibrium model includes:
H2、CO、CO2、CH4、C2H6、C2H4、C3H8、C3H6、C4H10、C4H8And N2It is preset in gas phase and liquid phase
Distribution coefficient.
Optionally, the parameter of the fresh synthesis gas includes: the total tolerance and the fresh conjunction of the fresh synthesis gas
The H for being included at gas2、CO、CO2、CH4And N2The shared percentage in total tolerance of the fresh synthesis gas；
The parameter of the first circulation gas includes: total tolerance of circulating air and the H that the circulating air is included2、CO、
CO2、N2、CH4、C2H6、C2H4、C3H8、C3H6、C4H10、C4H8The shared percentage in total tolerance of the circulating air.
Above-mentioned technical proposal provides a kind of analogy method specifically for Fischer-Tropsch synthesis, compares and utilizes Universal Die
It is with strong points for quasi- software simulation Fischer-Tropsch synthesis.In addition, due to existing General-Purpose Simulation Software in order to protect merchant
It is close, often by technical know-how of some keys, such as model selection, equations system method and parameter source etc., in simulation process
In when the error occurs, user often can not find reason.And analogy method provided by the present invention, user can be according to oneself need
It asks and comes preference pattern, parameter and equations system method, convenient for finding mistake when the error occurs and adjusting.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is a kind of flow diagram of F- T synthesis analogy method provided in an embodiment of the present invention；
Fig. 2 is a kind of block diagram of F- T synthesis simulator provided in an embodiment of the present invention；
Fig. 3 is the block diagram of another F- T synthesis simulator shown in embodiment illustrated in fig. 2.
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
Fig. 1 is a kind of flow diagram of F- T synthesis analogy method provided in an embodiment of the present invention, as shown in Figure 1, should
Method may comprise steps of:
Step 101, determine that the input condition of Fischer-Tropsch synthesis, input condition include the parameter and first of fresh synthesis gas
The parameter of circulating air.
Step 102, model and response parameter needed for selecting Fischer-Tropsch synthesis.
Step 103, the model according to needed for input condition, Fischer-Tropsch synthesis and response parameter, which determine, carries out F- T synthesis
The reaction product generated after reaction.
Step 104, reaction product is separated using vapor liquid equilibrium model, product after being separated, product after separation
In include second circulation gas.
Step 105, whether the parameter error of the parameter and first circulation gas that judge second circulation gas is less than preset error
Limit.
It, thus and should according to the parameter of the parameters revision first circulation gas of second circulation gas when error is not less than the limits of error
Virgin gas parameter forms new input condition, and executes step 101 again to step 105 until error is less than the limits of error.
Wherein, which can be arranged according to actual accuracy requirement, not do specific limit in the present embodiment
It is fixed.
Wherein, the parameter of fresh synthesis gas described in step 101 includes: total tolerance of fresh synthesis gas and fresh
The H that synthesis gas is included2、CO、CO2、CH4And N2The shared percentage in total tolerance of fresh synthesis gas, illustratively, when
It, can be as shown in table 1 when synthesis gas contains a small amount of argon gas.
Table 1
First circulation gas is the circulating air of the input as Fischer-Tropsch synthesis, which may include: H2、
CO、CO2、N2、CH4、C2H6、C2H4、C3H8、C3H6、C4H10、C4H8.When reacting initial, need to be arranged the ginseng of first circulation gas
Number, illustratively, when synthesis gas contains a small amount of argon gas, initial parameter can be for shown in table 2:
Table 2
Further, model and response parameter needed for selection Fischer-Tropsch synthesis described in step 102 may include:
Select Fischer-Tropsch synthesis needed for reaction model, chain growth model, ethylenic alkoxy rate model, catalyst performance parameter and
Technological parameter.
Illustratively, which may include:
nCO+(2n+1)H2--->CnH2n+2+nH2O
nCO+2nH2--->CnH2n+nH2O
CO+H2O--->CO2+H2
nCO+(m/2+n-p)H2--->CnHmOp+(n-p)H2O；
Wherein, n, m, p are positive integer.
The chain growth model may include:
Chain growth probability is constant 0.90-0.94 in carbon number > 5；It is preset chain growth probability, institute when carbon number≤5
Stating preset chain growth probability is determined according to experimental data.
The ethylenic alkoxy rate model may include:
Carbon number is the alkene alkane mass ratio of n are as follows: n* β ^ (n-1) * (1- β) ^2*70, β are ethylenic alkoxy rate index.
The catalyst performance parameter may include:
Pre-set CO conversion ratio, CO2Selectivity and oxygenatedchemicals selectivity；
Illustratively, which can be 98.4%, CO2Selectivity can be 14.6%, oxygenatedchemicals selectivity
It can be 6-7%.
The technological parameter may include:
Pre-set virgin gas air speed, recycle ratio, reaction temperature, reaction pressure, reactor diameter and superficial gas velocity take off
Carbon depth.
Illustratively, which can be 3000-4000Nm3/ (th), recycle ratio can be 1.1-1.5, reaction
It can be that 10m and superficial gas velocity can that temperature, which can be 255-270 DEG C, reaction pressure can be 2.8-3.2MPa, reactor diameter
Think that 0.33m/s, decarburized depth can be 12-14%.
Further, product includes product liquid, tail gas, CO after the separation in step 1042And the second circulation gas,
Wherein, which may include:
H2、CO、CO2、CH4、C2H6、C2H4、C3H8、C3H6、C4H10、C4H8And N2It is preset in gas phase and liquid phase
Distribution coefficient；Illustratively, when synthesis gas contains a small amount of argon gas, which can be as shown in table 3:
Table 3
| Component | H2 | CO | CO2 | CH4 | N2 | Ar | C2H6 | C2H4 | C3H8 | C3H6 | C4H10 | C4H8 |
| Distribution coefficient | 516.5 | 317.0 | 81.0 | 156.4 | 269.6 | 270 | 55 | 66 | 38 | 39 | 42 | 39 |
It should be noted that above-mentioned reaction model, chain growth model, ethylenic alkoxy rate model, catalyst performance parameter and work
Skill parameter, vapor liquid equilibrium model and reaction model, chain growth model, ethylenic alkoxy rate model, catalyst performance parameter and technique ginseng
In number and specific data involved in gas-liquid balance model be it is illustrative, including but not limited to this, experimenter can root
Change according to actual demand, increase or adjust one or more.For example, those skilled in the art can be based on Henry
Law, Raoult's law or double-film theory establish gas-liquid separation model.
Further, on the basis of step 101 described previously~105, can also include:
Step 106, it when the error is less than the limits of error, is determined according to product liquid, tail gas, carbon dioxide and circulating air
The process data of this Fischer-Tropsch synthesis, obtains target process data.
The target process data can be by reporting data (i.e. it has been reported that is come out comes from true Fischer-Tropsch with known
The process data recorded in synthetic reaction experiment) it is compared to the accuracy of analogy method provided by verifying the present embodiment,
So as to the feasibility of method shown in proof diagram 1.
Illustratively, table 4 is the part simulated in the target process data that Fischer-Tropsch synthesis obtains using method shown in Fig. 1
The result that data are compared with actual report data:
Table 4
| Part response parameter | Unit | Report data | Calculated value |
| H2Conversion ratio | % | 98.7 | 98.6 |
| H2+ CO conversion ratio | % | 98.6% | 98.6% |
| CH4Selectivity | % | 3.2% | 3.2% |
| Circulating flow rate | Nm3/h | 769998 | 769997 |
| Inlet tower gas amount | Nm3/h | 1469997 | 1469994 |
| Hydro carbons total output (C1+) | kg/h | 139882 | 135649 |
| C3+ yield | kg/h | 126217 | 128271 |
| C5+ yield | kg/h | 116594 | 118949 |
| C3+ yield | g/Nm3 | 180 | 183 |
| C5+ yield | g/Nm3 | 167 | 170 |
| Aquatic products rate | t/h | 142 | 142 |
| Tail gas H2/CO | - | 1.3 | 1.37 |
As it can be seen that the difference very little of the target process data and report data that are obtained by method shown in FIG. 1, therefore can be with
Illustrate the accuracy of method shown in FIG. 1, it was demonstrated that the feasibility of this method.
It is worth noting that, if it is desired to the difference of the target process data and report data that obtain method shown in FIG. 1
Different smaller, then the limits of error described in adjustable step 105, the smaller then precision of the limits of error are higher.In addition, in the above method
Calculating process should ensure that: (1) material disengaging balance, it may be assumed that mFresh synthesis gas=m(product liquid+emission+carbon dioxide), m representation quality；(2) element
Disengaging balance: i.e. NFresh synthesis gas=N(product liquid+emission+carbon dioxide), N represents the elements such as C, H, O, N.
Method provided by above-mentioned technical proposal, for using General-Purpose Simulation Software simulation Fischer-Tropsch synthesis, needle
It is strong to property.In addition, often the technology of some keys is protected due to existing General-Purpose Simulation Software in order to protect trade secret
It is close, such as model selection, equations system method and parameter source etc., in simulation process when the error occurs, user often can not find
Reason.And analogy method provided by the present invention, user can come preference pattern, parameter and solution of equation according to their own needs
Method, convenient for finding mistake when the error occurs and adjusting.
Fig. 2 is a kind of block diagram of F- T synthesis simulator provided in an embodiment of the present invention, and the device is for executing Fig. 1 institute
The method stated, the device can be applied to computer, can constitute meter by way of software or hardware or the two combine
Calculation machine it is some or all of, as shown in Fig. 2, the device 200 may include:
Setup module 210, for determining that the input condition of Fischer-Tropsch synthesis, input condition include the ginseng of fresh synthesis gas
Several and first circulation gas parameter；
Setup module 210 is also used to, model and response parameter needed for selecting Fischer-Tropsch synthesis；
Reaction module 220 is determined for the model according to needed for input condition, Fischer-Tropsch synthesis and response parameter and is carried out
The reaction product generated after Fischer-Tropsch synthesis；
Separation module 230, for reaction product to be separated using vapor liquid equilibrium model, product after being separated, point
From in rear product include second circulation gas；
Judgment module 240, for judge second circulation gas parameter and first circulation gas parameter error whether be less than it is pre-
If the limits of error；When error is not less than the limits of error, according to the parameter of the parameters revision first circulation gas of second circulation gas and again
Secondary execution model according to needed for input condition, Fischer-Tropsch synthesis and response parameter generate after determining progress Fischer-Tropsch synthesis
Reaction product to judging whether the parameter of second circulation gas and the error of the parameter of first circulation gas are less than the preset limits of error
The step of until error be less than the limits of error.
Optionally, setup module 210 is used for:
Select Fischer-Tropsch synthesis needed for reaction model, chain growth model, ethylenic alkoxy rate model, catalyst performance parameter and
Technological parameter.
In reaction module 220, entire calculating process be should ensure that: (1) material disengaging balance, it may be assumed that mFresh synthesis gas=
m(product liquid+emission+carbon dioxide), m representation quality；(2) element disengaging balance: i.e. NFresh synthesis gas=N(product liquid+emission+carbon dioxide), N represent C,
H, the elements such as O, N.
Optionally, product includes product liquid, tail gas, carbon dioxide and second circulation gas after separation, and Fig. 3 is Fig. 2 institute
The block diagram for showing another F- T synthesis simulator that implementation exemplifies, on the basis of Fig. 2, the device 200 further include:
Computing module 250 is used for when error is less than the limits of error, according to product liquid, tail gas, carbon dioxide and circulation
Gas determines the process data of this Fischer-Tropsch synthesis, obtains target process data.
Optionally, reaction model includes:
nCO+(2n+1)H2--->CnH2n+2+nH2O
nCO+2nH2--->CnH2n+nH2O
CO+H2O--->CO2+H2
nCO+(m/2+n-p)H2--->CnHmOp+(n-p)H2O；
Chain growth model includes:
Chain growth probability is constant 0.90-0.94 in carbon number > 5；It is preset chain growth probability, in advance when carbon number≤5
If chain growth probability be to be determined according to experimental data；
Ethylenic alkoxy rate model includes:
Carbon number is the alkene alkane mass ratio of n are as follows: n* β ^ (n-1) * (1- β) ^2*70, β are ethylenic alkoxy rate index；
Catalyst performance parameter includes:
Pre-set CO conversion, carbon dioxide selectivity and oxygenatedchemicals selectivity；
Technological parameter includes:
Pre-set virgin gas air speed, recycle ratio, reaction temperature, reaction pressure, reactor diameter and superficial gas velocity take off
Carbon depth；
Vapor liquid equilibrium model includes:
H2、CO、CO2、CH4、C2H6、C2H4、C3H8、C3H6、C4H10、C4H8And N2It is preset in gas phase and liquid phase
Distribution coefficient.
Optionally, the parameter of fresh synthesis gas includes: total tolerance of fresh synthesis gas and fresh synthesis gas is included
H2、CO、CO2、CH4And N2The shared percentage in total tolerance of fresh synthesis gas；
The parameter of first circulation gas includes: total tolerance of circulating air and the H that circulating air is included2、CO、CO2、N2、
CH4、C2H6、C2H4、C3H8、C3H6、C4H10、C4H8The shared percentage in total tolerance of circulating air.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (12)
1. a kind of F- T synthesis analogy method, which is characterized in that the described method includes:
Determine that the input condition of Fischer-Tropsch synthesis, the input condition include the parameter and first circulation gas of fresh synthesis gas
Parameter；
Model needed for selecting the Fischer-Tropsch synthesis and response parameter；
It is determined according to model needed for the input condition, the Fischer-Tropsch synthesis and the response parameter and carries out F- T synthesis
The reaction product generated after reaction；
The reaction product is separated using vapor liquid equilibrium model, product after being separated wraps in product after the separation
Include second circulation gas；
Whether the parameter error of the parameter and the first circulation gas that judge the second circulation gas is less than the preset limits of error；When
When the error is not less than the limits of error, simultaneously according to the parameter of first circulation gas described in the parameters revision of the second circulation gas
The model according to needed for the input condition, the Fischer-Tropsch synthesis is executed again and the response parameter is determined and carried out
Parameter and the first circulation gas of the reaction product generated after Fischer-Tropsch synthesis to the judgement second circulation gas
The step of whether error of parameter is less than the preset limits of error is until the error is less than the limits of error.
2. the method according to claim 1, wherein model needed for the selection Fischer-Tropsch synthesis and
Response parameter includes:
Reaction model needed for selecting the Fischer-Tropsch synthesis, chain growth model, ethylenic alkoxy rate model, catalyst performance parameter and
Technological parameter.
3. method according to claim 1 or 2, which is characterized in that after the separation product include product liquid, tail gas,
CO2And the second circulation gas, the method also includes:
When the error is less than the limits of error, according to the product liquid, the tail gas, the carbon dioxide and described
Circulating air calculates the process data of this Fischer-Tropsch synthesis, obtains target process data.
4. according to the method described in claim 2, it is characterized in that, the reaction model includes:
nCO+(2n+1)H2--->CnH2n+2+nH2O
nCO+2nH2--->CnH2n+nH2O
CO+H2O--->CO2+H2
nCO+(m/2+n-p)H2--->CnHmOp+(n-p)H2O；
The chain growth model includes:
Chain growth probability is constant 0.90-0.94 in carbon number > 5；It is preset chain growth probability when carbon number≤5, it is described pre-
If chain growth probability be to be determined according to experimental data；
The ethylenic alkoxy rate model includes:
Carbon number is the alkene alkane mass ratio of n are as follows: n* β ^ (n-1) * (1- β) ^2*70, β are ethylenic alkoxy rate index；
The catalyst performance parameter includes:
Pre-set CO conversion ratio, CO2Selectivity and oxygenatedchemicals selectivity；
The technological parameter includes:
Pre-set virgin gas air speed, recycle ratio, reaction temperature, reaction pressure, reactor diameter and superficial gas velocity, decarburization are deep
Degree；
The vapor liquid equilibrium model includes:
H2、CO、CO2、CH4、C2H6、C2H4、C3H8、C3H6、C4H10、C4H8And N2Preset distribution in gas phase and liquid phase
Coefficient.
5. according to claim 1, method described in any one of 2,4, which is characterized in that the parameter packet of the fresh synthesis gas
It includes: the H that total tolerance of the fresh synthesis gas and the fresh synthesis gas are included2、CO、CO2、CH4And N2Described
Shared percentage in total tolerance of fresh synthesis gas；
The parameter of the first circulation gas includes: total tolerance of circulating air and the H that the circulating air is included2、CO、CO2、
N2、CH4、C2H6、C2H4、C3H8、C3H6、C4H10、C4H8The shared percentage in total tolerance of the circulating air.
6. according to the method described in claim 3, it is characterized in that, the parameter of the fresh synthesis gas includes: the fresh conjunction
The H that total tolerance and the fresh synthesis gas at gas are included2、CO、CO2、CH4And N2In the total of the fresh synthesis gas
Shared percentage in tolerance；
The parameter of the first circulation gas includes: total tolerance of circulating air and the H that the circulating air is included2、CO、CO2、
N2、CH4、C2H6、C2H4、C3H8、C3H6、C4H10、C4H8The shared percentage in total tolerance of the circulating air.
7. a kind of F- T synthesis simulator, which is characterized in that described device includes:
Setup module, for determining that the input condition of Fischer-Tropsch synthesis, the input condition include the parameter of fresh synthesis gas
With the parameter of first circulation gas；
The setup module is also used to, model needed for selecting the Fischer-Tropsch synthesis and response parameter；
Reaction module, it is true for the model according to needed for the input condition, the Fischer-Tropsch synthesis and the response parameter
Surely the reaction product generated after Fischer-Tropsch synthesis is carried out；
Separation module, for the reaction product to be separated using vapor liquid equilibrium model, product after being separated, described point
From in rear product include second circulation gas；
Judgment module, for judge the second circulation gas parameter and the first circulation gas parameter error whether be less than it is pre-
If the limits of error；When the error is not less than the limits of error, first according to the parameters revision of the second circulation gas
The parameter of circulating air simultaneously executes the model according to needed for the input condition, the Fischer-Tropsch synthesis and described anti-again
Parameter is answered to determine parameter and institute of the reaction product generate after Fischer-Tropsch synthesis to the judgement second circulation gas
It states the step of whether the error of the parameter of first circulation gas is less than the preset limits of error until the error is less than the limits of error.
8. device according to claim 7, which is characterized in that the setup module is used for:
Reaction model needed for selecting the Fischer-Tropsch synthesis, chain growth model, ethylenic alkoxy rate model, catalyst performance parameter and
Technological parameter.
9. device according to claim 7 or 8, which is characterized in that after the separation product include product liquid, tail gas,
Carbon dioxide and the second circulation gas, described device further include:
Computing module is used for when the error is less than the limits of error, according to the product liquid, the tail gas, described two
Carbonoxide and the circulating air calculate the process data of this Fischer-Tropsch synthesis, obtain target process data.
10. device according to claim 8, which is characterized in that the reaction model includes:
nCO+(2n+1)H2--->CnH2n+2+nH2O
nCO+2nH2--->CnH2n+nH2O
CO+H2O--->CO2+H2
nCO+(m/2+n-p)H2--->CnHmOp+(n-p)H2O；
The chain growth model includes:
Chain growth probability is constant 0.90-0.94 in carbon number > 5；It is preset chain growth probability when carbon number≤5, it is described pre-
If chain growth probability be to be determined according to experimental data；
The ethylenic alkoxy rate model includes:
Carbon number is the alkene alkane mass ratio of n are as follows: n* β ^ (n-1) * (1- β) ^2*70, β are ethylenic alkoxy rate index；
The catalyst performance parameter includes:
Pre-set CO conversion, carbon dioxide selectivity and oxygenatedchemicals selectivity；
The technological parameter includes:
Pre-set virgin gas air speed, recycle ratio, reaction temperature, reaction pressure, reactor diameter and superficial gas velocity, decarburization are deep
Degree；
The vapor liquid equilibrium model includes:
H2、CO、CO2、CH4、C2H6、C2H4、C3H8、C3H6、C4H10、C4H8And N2Preset distribution in gas phase and liquid phase
Coefficient.
11. the device according to any one of claim 7,8,10, which is characterized in that the parameter packet of the fresh synthesis gas
It includes: the H that total tolerance of the fresh synthesis gas and the fresh synthesis gas are included2、CO、CO2、CH4And N2Described
Shared percentage in total tolerance of fresh synthesis gas；
The parameter of the first circulation gas includes: total tolerance of circulating air and the H that the circulating air is included2、CO、CO2、
N2、CH4、C2H6、C2H4、C3H8、C3H6、C4H10、C4H8The shared percentage in total tolerance of the circulating air.
12. device according to claim 9, which is characterized in that the parameter of the fresh synthesis gas includes: the fresh conjunction
The H that total tolerance and the fresh synthesis gas at gas are included2、CO、CO2、CH4And N2In the total of the fresh synthesis gas
Shared percentage in tolerance；
The parameter of the first circulation gas includes: total tolerance of circulating air and the H that the circulating air is included2、CO、CO2、
N2、CH4、C2H6、C2H4、C3H8、C3H6、C4H10、C4H8The shared percentage in total tolerance of the circulating air.
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