JP2007016135A - Production controlling apparatus for petroleum product, its method, its program, recording medium recorded with the program and production apparatus for petroleum product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a petroleum product producing plant enabling easy control of operation for the efficient production of the petroleum product using crude oil and naphtha as raw materials. <P>SOLUTION: The properties of crude oil and naphtha fraction are recognized by 51 pure component and 39 pseudo component classifying with the distillation calculation of the crude oil by a plant controlling apparatus 310 from the raw material data of an operation condition data inputted by an operator based on a crude oil database and a naphtha database, and the properties and quantity of a petroleum product produced from crude oil and naphtha fraction through various treatments in various apparatuses of a production plant 200 are recognized by 51 pure component. The optimum operation conditions of each apparatus of the production plant 200 to maximize the profit is calculated based on a plant model connecting the crude oil, the naphtha fraction and the petroleum product with 51 pure component and 39 pseudo component in an gas-liquid equilibrium state, and the operation of the production plant 200 is controlled under the optimized operation conditions. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a petroleum product production control apparatus for producing petroleum products from crude oil and naphtha fractions, a method thereof, a program thereof, a recording medium recording the program, and a petroleum product production apparatus.

  Conventionally, for example, a method using linear programming is known as a control method that is most profitable when various petroleum products are produced from crude oil using a production apparatus. The control method in the manufacturing apparatus using this linear programming method calculates the operating condition that gives the optimum value of the objective function based on the operating conditions of the raw material, the final product, and the manufacturing apparatus (for example, see Patent Document 1). ).

The device described in Patent Document 1 calculates the yield of a product according to different operating conditions of a petroleum complex, obtains learning data, and generates a neural network model. Then, based on the conditions input from the linear programming model in which the predetermined objective function is set, the neural network model is used to search for operating conditions according to the input conditions.
Based on the operating conditions obtained by this search, the value of the objective function set in the linear programming model is calculated, and it is determined from the obtained objective function value whether or not the optimal operating condition is satisfied. If it is not the operating condition, the newly changed condition is input to the neural network model to estimate the optimal operating condition.

JP 2002-329187A (left column on page 3 to right column on page 4)

By the way, the operating conditions for refining various petroleum products such as gasoline, light oil and heavy oil by distilling crude oil, etc., are appropriately set based on the fraction of crude oil due to fluctuations in components depending on the production area. On the other hand, the operating conditions for producing various petroleum products such as olefin, polyethylene, polypropylene, and styrene from naphtha are appropriately set based on the naphtha component because naphtha does not fluctuate to some extent. . And when manufacturing petroleum products, such as an olefin and polyethylene, it manufactures by using as a raw material what some limited component ranges, such as naphtha and liquefied petroleum.
In recent years, a method for producing petroleum products such as olefin and polyethylene from crude oil has been attempted based on improvement of production efficiency and reduction of environmental load.
However, when crude oil is produced by distillation, etc., operating conditions are set by distillate management, and when manufacturing from naphtha, operating conditions are set by component management, both crude oil and naphtha are used. There is a problem that it is difficult to set operating conditions in order to produce petroleum products using as a raw material.

  In view of such problems, an object of the present invention is to provide a petroleum product production control device, a method thereof, a program thereof, and a program thereof, which can easily perform operation control for efficiently producing petroleum products using crude oil and naphtha as raw materials. It is an object to provide a recording medium recording the above and an apparatus for producing petroleum products.

  The petroleum product production control device of the present invention is a petroleum product production control device for controlling the operating state in a production device for producing petroleum products through various processing steps using crude oil and naphtha fractions as raw materials. Crude oil property recognition means for recognizing a chemical composition and a fraction composition classified based on distillation calculation of the crude oil; and a naphtha property recognition means for recognizing the property of the naphtha fraction by the chemical composition and the fraction composition; The petroleum product property recognition means for recognizing the property and amount of the petroleum product by the chemical composition, and the crude oil, the naphtha fraction, and the petroleum product are connected in a gas-liquid equilibrium state by the chemical composition and the fraction composition. Based on the plant model, the production plan calculation means for calculating the operating conditions in the processing step, and the manufacturing equipment with the operation conditions calculated by the production plan calculation means And operation control means for operating the characterized by comprising a.

In this invention, the properties of the crude oil and the properties of the naphtha fraction are recognized by the fraction composition classified based on the chemical composition and the distillation calculation of the crude oil, and various processing steps are performed in the production apparatus using the crude oil and the naphtha fraction as raw materials. Recognize the properties and quantity of petroleum products manufactured through the chemical composition. Based on a plant model in which crude oil and naphtha fractions and petroleum products are connected in a gas-liquid equilibrium state by chemical composition and fraction composition, the operating conditions in the processing steps in the production equipment are calculated, and production is performed under these operating conditions. Control to operate the device.
For this reason, by recognizing the properties of crude oil and naphtha fractions in terms of chemical composition and fraction composition, crude oil and naphtha fractions are managed based on thermal calculations using plant models from crude oil and naphtha fractions to petroleum products. It is possible to calculate the operating conditions for producing petroleum products from the raw materials, and to easily control the production of petroleum products using crude oil and naphtha fractions as raw materials.

In the present invention, the operation state recognition means for recognizing the operation state of the manufacturing apparatus, and the error between the operation condition for operating the manufacturing apparatus and the operation state of the manufacturing apparatus are recognized by the operation control means. It is preferable to include a driving state comparison unit that corrects a driving condition for operating the manufacturing apparatus by the operation control unit in a minimum state.
In this invention, since the error between the operating condition for operating the manufacturing apparatus and the actual operating state in the manufacturing apparatus is recognized and the operating condition for operating the manufacturing apparatus in a state where the error is minimized, the plant model is corrected. Therefore, the operating conditions set based on the above are corrected in comparison with the actual results, and appropriate control for producing the petroleum product can be obtained.

  The petroleum product production control device of the present invention is a petroleum product production control device for controlling the operating state in a production device for producing petroleum products through various processing steps using crude oil and naphtha fractions as raw materials. Crude oil property recognition means for recognizing a chemical composition and a fraction composition classified based on distillation calculation of the crude oil; and a naphtha property recognition means for recognizing the property of the naphtha fraction by the chemical composition and the fraction composition; The petroleum product property recognition means for recognizing the property and amount of the petroleum product by the chemical composition, and the crude oil, the naphtha fraction, and the petroleum product are connected in a gas-liquid equilibrium state by the chemical composition and the fraction composition. Based on a plant model, a production plan calculation means for calculating a production plan for manufacturing the petroleum product by the manufacturing apparatus, and a calculation plan calculated by the production plan calculation means And operation control means for operating the manufacturing apparatus according to the production plan, characterized by comprising a.

In this invention, the properties of the crude oil and the properties of the naphtha fraction are recognized by the fraction composition classified based on the price composition and the distillation calculation of the crude oil, and various processing steps are performed in the production apparatus using the crude oil and the naphtha fraction as a raw material. Recognize the properties and quantity of petroleum products manufactured through the chemical composition. Then, based on a plant model in which crude oil and naphtha fractions and crude oil products are connected in a gas-liquid equilibrium state by chemical composition and fraction composition, a production plan for producing petroleum products using a production device is calculated. Controls to operate the manufacturing equipment.
For this reason, by recognizing the properties of crude oil and naphtha fractions in terms of chemical composition and fraction composition, crude oil and naphtha fractions are managed based on thermal calculations using plant models from crude oil and naphtha fractions to petroleum products. This makes it possible to calculate a production plan for producing petroleum products using as raw materials, and facilitates control of producing petroleum products using crude oil and naphtha fractions as raw materials.

And in this invention, the performance recognition means which recognizes the performance by which the said petroleum product was manufactured by operation | movement of the said manufacturing apparatus by control of the said operation control means by the said manufacturing apparatus based on the said production plan, The said production plan, It is preferable to include an operation state comparison unit that calculates an error from the actual result and corrects the production plan so that the error is minimized.
In this invention, the error between the actual production of the petroleum product by the operation of the production apparatus whose operation is controlled based on the production plan and the production plan is calculated, and the production plan is corrected so that the error is minimized. Therefore, the production plan set based on the plant model is corrected in comparison with the actual result, and appropriate control for producing the petroleum product can be obtained.

Furthermore, in the present invention, it is preferable that the operating state comparison unit performs a process of calculating and correcting the error every predetermined time.
In this invention, since the process which calculates and correct | amends an error every predetermined time is implemented, control for producing petroleum products satisfactorily is obtained.

In the present invention, the chemical composition is a hydrocarbon classified by a chemical composition having a boiling point corresponding to a naphtha fraction obtained by distillation of the crude oil and a lighter fraction lighter than the naphtha fraction. The fractional composition is an unspecified composition group that corresponds to a heavy fraction that is fractionated as a heavier fraction than a naphtha fraction by distillation of the crude oil, and is classified into a plurality of categories within a predetermined distillation temperature range. Is preferred.
In the present invention, the chemical composition is a naphtha fraction obtained by distillation of crude oil and hydrocarbons classified by the chemical composition having a boiling point corresponding to a lighter fraction that is lighter than the naphtha fraction. Since it is an unspecified composition group that corresponds to heavy fractions that are fractionated as heavier fractions than naphtha fractions obtained by distillation and is classified into multiple categories within the prescribed distillation temperature range, crude oil and naphtha fractions are separated. Similarly, it is easy to control the components so that the target petroleum product is manufactured with the target amount with high accuracy.

Further, in the present invention, the chemical composition is 51 hydrocarbons having 1 to 11 carbon atoms, and the fraction composition is fractionated as a fraction heavier than a naphtha fraction by distillation of the crude oil. It is preferable that the composition be an unspecified composition group classified into 39 distillation temperature ranges corresponding to heavy fractions.
In this invention, the hydrocarbon composition is 51 hydrocarbons having 1 to 11 carbon atoms, and the fraction composition is a heavy fraction that is fractionated as a heavier fraction than a naphtha fraction by distillation of crude oil. Correspondingly, because it is an unspecified composition group classified by 39 distillation temperature ranges, it becomes easy to control the production of the target petroleum product with the desired amount with high accuracy without complicating the heat calculation in the plant model, Rapid calculation and simplification of the configuration of the calculation device can be easily obtained.

And in this invention, it is preferable that the said production plan calculating means is set as the structure which calculates the optimizing operation condition in the said process process in which the profit at the time of manufacturing the said petroleum product becomes the maximum.
In this invention, since the optimized operating conditions are calculated in the processing step that maximizes the profit when producing petroleum products, control for efficient production of petroleum products using crude oil and naphtha fractions as raw materials is performed. Easy to get.

In the present invention, the production plan calculation means may determine the cost of the petroleum product, the cost of the raw material, and the processing of the manufacturing apparatus based on the property of the crude oil, the property of the naphtha fraction, and the property of the petroleum product. The utility cost required for the operation of the process is calculated, and the value obtained by subtracting the cost of the raw material and the utility cost in the processing process from the cost of the petroleum product is used as the objective function of the profit. It is preferable that the optimized operating condition is calculated.
In this invention, the cost of petroleum products and raw materials and the utility costs required for operation of the processing process of the manufacturing apparatus are calculated based on the properties of crude oil, naphtha fractions and petroleum products, and the costs of raw materials and Optimized operating conditions in the processing process are calculated so that the objective function of profit after subtracting the utility cost is at the maximum value, so the operating condition in the processing process is the control for manufacturing that maximizes the profit. Are easily computed and control for manufacturing is easily obtained.

  The apparatus for producing a petroleum product according to the present invention is an apparatus for producing a petroleum product using crude oil and a naphtha fraction as raw materials through various processing steps, and processes the crude oil and the naphtha fraction to produce the petroleum product. A production apparatus for producing a product and a petroleum product production control apparatus according to any one of claims 1 to 9 for controlling an operating state of the production apparatus.

In this invention, operation of the manufacturing apparatus which manufactures a petroleum product by the petroleum product manufacturing control apparatus in any one of Claims 1 thru | or 9 with easy control which manufactures petroleum products from crude oil and a naphtha fraction as a raw material The state is controlled.
For this reason, for example, appropriate control for producing a petroleum product using both crude oil and naphtha fraction as raw materials can be easily obtained in order to improve production efficiency and reduce environmental burden.

The petroleum product production control method of the present invention is a petroleum product production control method for controlling an operating state in a production apparatus for producing a petroleum product through various processing steps using crude oil and a naphtha fraction as raw materials. The computing means recognizes the property of the crude oil by the chemical composition and the fraction composition classified based on the distillation calculation of the crude oil, and recognizes the property of the naphtha by the chemical composition and the fraction composition. A naphtha property recognition step, a petroleum product property recognition step for recognizing the property and quantity of the petroleum product by the chemical composition, the crude oil, the naphtha fraction, and the petroleum product by the chemical composition and the fraction composition. Based on the plant model connected in the vapor-liquid equilibrium state, the production plan calculation step for calculating the operating conditions in the processing step, and the calculation in the production plan calculation step And wherein the operation control step of operating the production apparatus, characterized in that it is performed at the operating conditions.
This invention is a development of the petroleum product production control apparatus of the invention described in claim 1, and has the same effects as the invention described in claim 1.

The petroleum product production control method of the present invention is a petroleum product production control method for controlling an operating state in a production apparatus for producing a petroleum product through various processing steps using crude oil and a naphtha fraction as raw materials. The computing means recognizes the property of the crude oil by the chemical composition and the fraction composition classified based on the distillation calculation of the crude oil, and recognizes the property of the naphtha by the chemical composition and the fraction composition. A naphtha property recognition step, a petroleum product property recognition step for recognizing the property and quantity of the petroleum product by the chemical composition, the crude oil, the naphtha fraction, and the petroleum product by the chemical composition and the fraction composition. A production plan calculation step for calculating a production plan for manufacturing the petroleum product by the manufacturing apparatus based on a plant model connected in a vapor-liquid equilibrium state; And operation control step of operating the manufacturing apparatus in accordance with the production plan calculated by the planning computation process, which comprises carrying out the.
This invention is a development of the petroleum product production control apparatus according to the invention described in claim 3, and has the same effects as the invention described in claim 3.

The petroleum product production control program of the present invention is characterized in that the arithmetic means functions as the petroleum product production control device according to any one of claims 1 to 9.
In this invention, in order for the calculation means to function as the petroleum product production control device according to any one of claims 1 to 8, the petroleum product is produced from crude oil and naphtha fraction by being installed in the calculation means. Therefore, it is possible to easily obtain a configuration that facilitates control, and to easily expand the use.

A recording medium on which a petroleum product manufacturing control program according to the present invention is recorded is characterized in that the petroleum product manufacturing control program according to claim 13 is recorded in a readable manner on the calculation means.
In this invention, since the petroleum product production control program according to the thirteenth aspect is appropriately read by the computing means, a configuration that facilitates the control of producing petroleum products using crude oil and naphtha fraction as raw materials can be easily obtained. In addition, the program can be handled easily and the use can be easily expanded.

  The calculation means in the present invention is not limited to a single computer, but includes a configuration in which a plurality of computers are combined in a network, an element such as a CPU (Central Processing Unit) or a microcomputer, or a plurality of electronic components. The circuit board is also included.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, a petroleum product manufacturing plant that is a petroleum product manufacturing apparatus including the petroleum product manufacturing control apparatus of the present invention will be described as an example. The present invention can be applied to various production apparatuses that produce various petroleum products such as ethylene and propylene using crude oil and naphtha as raw materials.
In the present embodiment, a configuration in which petroleum products are produced using liquefied petroleum as a raw material together with crude oil and naphtha will be described. However, production using liquefied petroleum as a raw material and production using other raw materials are also targeted. be able to.
FIG. 1 is a block diagram showing a schematic configuration of a petroleum product manufacturing plant which is a petroleum product manufacturing apparatus in the present embodiment. FIG. 2 is a block diagram showing a schematic configuration of a plant system manufacturing apparatus of a petroleum product manufacturing plant. FIG. 3 is a block diagram showing a schematic configuration of the plant system control device of the operation control device. FIG. 4 is an explanatory diagram showing classification by fractions in crude oil. FIG. 5 is a graph showing the relationship between a distillation curve and a fraction in crude oil. FIG. 6 is a graph showing the relationship between pseudo components and distillation curves in crude oil. FIG. 7 is an explanatory diagram showing a display screen of the plant model represented by the screen display. FIG. 8 is a block diagram showing a schematic configuration of the production plan calculation device of the operation control device.

[Configuration of petroleum product manufacturing plant]
In FIG. 1, 100 is a petroleum product manufacturing plant, and this petroleum product manufacturing plant 100 manufactures various petroleum products such as ethylene, propylene, and olefins using crude oil, naphtha and liquefied petroleum (Liquefied Petroleum Gas: LPG) as raw materials. System.
The petroleum product manufacturing plant 100 includes a plant system manufacturing apparatus 200 which is a plant as a manufacturing apparatus for manufacturing petroleum products by appropriately processing crude oil, naphtha and LPG, and an operation state which is an operation of the plant system manufacturing apparatus 200. And an operation control device 300 as a petroleum product production control device which is a control system device to be controlled.

(Configuration of plant manufacturing equipment)
The plant system manufacturing apparatus 200 includes a refining apparatus 210 that processes or refines crude oil, and a petrochemical apparatus 220 that manufactures petroleum products from intermediate products, naphtha, and LPG purified by the refining apparatus. .
The refining device 210 is a device that is controlled by the plant system control device 310 to purify crude oil as a raw material. As shown in FIG. 2, the refining device 210 is connected to a crude oil tank 251 in which crude oil is stored, and includes an atmospheric distillation device 211 that distills crude oil appropriately flowing from the crude oil tank 251 at normal pressure. This atmospheric distillation apparatus 211 is controlled by the plant system control apparatus 310, fractionates a lighter light fraction from naphtha from the top of the tower, fractionates a heavier heavy fraction from naphtha from the bottom of the tower, A naphtha fraction is fractionated from the middle of the tower.
Note that the atmospheric distillation apparatus 211 may process not only crude oil stored in the crude oil tank 251 but also crude oil stored in a tanker, for example.
The atmospheric distillation apparatus 211 is connected to the petrochemical apparatus 220 at the top of the column, and the light fraction flows out to the petrochemical apparatus 220. When the lighter light fraction from the naphtha is discharged from the atmospheric distillation apparatus 211 to the petrochemical apparatus 220, it is discharged to the petrochemical apparatus 220 together with the liquefied petroleum as a raw material stored in the separately provided liquefied petroleum tank 252. Also good.

The refiner 210 includes a naphtha fractionator 212A and a naphtha desulfurizer 212B that are connected to the atmospheric distillation unit 211 and controlled by the plant system controller 310 to process the naphtha fraction.
The naphtha fractionator 212A fractionates at least a portion of the naphtha fraction fractionated by the atmospheric distillation unit 211 into a light naphtha that is a so-called light naphtha and a heavy naphtha that is a so-called heavy naphtha. The naphtha fractionator 212A is connected to the petrochemical apparatus 220, and the light naphtha and the heavy naphtha respectively flow out to the petrochemical apparatus 220.
When the light naphtha flows out from the naphtha fractionator 212A to the petrochemical apparatus 220, for example, the light naphtha may flow out together with the light naphtha as a raw material stored in the light naphtha tank 253.

On the other hand, the naphtha desulfurization apparatus 212B desulfurizes at least the remaining portion of the naphtha fraction fractionated by the atmospheric distillation apparatus 211 together with the aromatic component flowing out from the petrochemical apparatus 220. The naphtha desulfurization apparatus 212B is connected to the petrochemical apparatus 220 and flows out at least a part of the lighter light fraction from the naphtha generated by the desulfurization process to the petrochemical apparatus 220.
Furthermore, a hydrogen production device 212C and a base tank 254 are connected to the naphtha desulfurization device 212B, and at least a part of at least the remainder of the light fraction generated by the desulfurization process flows out to the hydrogen production device 212C, and at least The remainder is collected as a gasoline base material and flows out to the base material tank 254. Further, at least a part of the heavy naphtha generated by the desulfurization process flows out to the petrochemical apparatus 220 to the naphtha desulfurization apparatus 212B.
When heavy naphtha flows out from the naphtha desulfurization device 212B to the petrochemical device 220, it flows out into the petrochemical device 220 together with the naphtha fractionated by the naphtha fractionation device 212A, or is stored in, for example, the heavy naphtha tank 255. You may make it flow out with the heavy naphtha used as a raw material.
Further, the catalytic reformer 212E is connected to the naphtha desulfurizer 212B, and at least the remaining portion of the heavy naphtha generated by the desulfurization process flows out to the catalytic reformer 212E.

The catalytic reformer 212E is controlled by the plant system controller 310 and reforms at least the remaining portion of the heavy naphtha generated by the desulfurization process by the naphtha desulfurizer 212B. A reformate fractionator 212F is connected to the catalytic reformer 212E.
This reformate fractionator 212F is controlled by the plant system controller 310, and the heavy naphtha reformed by the catalytic reformer 212E flows out from the petrochemical apparatus 220 (hereinafter referred to as PFN). ) And para-xylene. The reformate fractionator 212F is connected with a debenzene unit 212G and a paraxylene unit 212H.
And the debenzene apparatus 212G is controlled by the plant system controller 310, and collects benzene from the benzene components separated by the reformate fractionator 212F by solvent purification. The debenzene apparatus 212G is connected to the petrochemical apparatus 220, and the collected benzene and the raffinate from which the benzene has been removed flow out to the petrochemical apparatus 220, respectively.
On the other hand, the para-xylene unit 212H is controlled by the plant system controller 310 from the reformate generated by the reformate fractionator 212F into a gasoline base material and so-called C8 aroma aromatic component having 8 carbon atoms. To separate. The para-xylene device 212H is connected to the base material tank 254 and the petrochemical device 220, and the gasoline base material flows out to the base material tank 254 for storage, and the C8 aroma flows out to the petrochemical device 220.

Further, the refining device 210 includes a vacuum gas oil desulfurization device 213A connected to the atmospheric distillation device 211. The vacuum gas oil desulfurization device 213A is controlled by the plant system control device 310, and performs vacuum desulfurization treatment of light components in the heavy fraction fractionated by the atmospheric distillation device 211.
In addition, a catalytic cracking device 213B is connected to the vacuum gas oil desulfurization device 213A. This catalytic cracking device 213B is controlled by the plant system control device 310, and the light component of the heavy fraction that has been subjected to the vacuum desulfurization treatment by the vacuum gas oil desulfurization device 213A is converted into a light component that is a gasoline base material and so-called high-cut propane. Catalytic cracking with propane containing no
And the gasoline base material obtained by the catalytic cracking process flows out into the base material tank 254 and is stored appropriately. Further, the high-cut propane flows out into a storage tank (not shown) provided separately and is stored as appropriate.

Furthermore, the purification apparatus 210 includes a vacuum distillation apparatus 214A connected to the atmospheric distillation apparatus 211. The vacuum distillation apparatus 214A is controlled by the plant system control apparatus 310, and performs a vacuum distillation process on at least a part of the heavy components of the heavy fraction fractionated by the atmospheric distillation apparatus 211. A vacuum gas oil desulfurization device 213A, a lubricating oil device 214B, and a heavy oil direct desulfurization device 215A are connected to the vacuum distillation device 214A.
Then, the vacuum distillation apparatus 214A causes a relatively light component out of the heavy components fractionated by the vacuum distillation process to flow out to the vacuum gas oil desulfurization apparatus 213A, and this relatively light component is discharged to the vacuum gas oil desulfurization apparatus 213A. And vacuum desulfurization treatment with light components.
Further, the vacuum distillation apparatus 214A flows out the remainder of the heavy components fractionated by the vacuum distillation process, excluding the light components flowing out to the vacuum gas oil desulfurization apparatus 213A, to the lubricating oil apparatus 214B. The lubricating oil is purified under the control of the system controller 310.
Furthermore, the vacuum distillation unit 214A flows out the heavy component of the heavy components fractionated by the vacuum distillation process to the heavy oil direct desulfurization unit 215A.

The heavy oil direct desulfurization apparatus 215A is also connected to the atmospheric distillation apparatus 211. The heavy oil direct desulfurization device 215A is controlled by the plant system control device 310, and at least the remainder excluding the portion that flows out to the vacuum distillation device 214A among the heavy fractions fractionated by the atmospheric distillation device 211. The desulfurization treatment is performed together with the heavy components of the heavy components distilled and distilled by the vacuum distillation apparatus 214A.
The heavy oil direct desulfurization device 215A then flows at least a part of the heavy components of the desulfurized heavy components to the catalytic cracking device 213B, and the heavy fraction subjected to the vacuum desulfurization treatment by the vacuum gas oil desulfurization device 213A. In addition to the light components, the catalytic cracking apparatus 213B performs the catalytic cracking treatment.

On the other hand, the petrochemical apparatus 220 is an apparatus that manufactures petroleum products under the control of the plant system control apparatus 310. The petrochemical apparatus 220 includes a first naphtha distillation apparatus 221. The first naphtha distillation apparatus 221 is connected to a naphtha tank 257 in which naphtha, which is a raw material such as imported naphtha, is stored, and the naphtha is heavier than the naphtha fraction and naphtha under the control of the plant system controller 310. Distill into heavy naphtha, lighter naphtha lighter than naphtha, and heavier components than heavy naphtha.
The naphtha fraction fractionated by the distillation of the first naphtha distillation apparatus 221 flows out to the atmospheric distillation apparatus 211 of the purification apparatus 210 and is subjected to an atmospheric distillation process together with crude oil by the atmospheric distillation apparatus 211. In addition, heavy components that are fractionated by the naphtha distillation apparatus 221 and heavier than the heavy naphtha are discharged to the naphtha desulfurization apparatus 212B of the purification apparatus 210, and are desulfurized together with the naphtha fraction that has been fractionated by the atmospheric distillation apparatus 211. The
The light naphtha flows out to the ethylene device 222 described later, and the heavy naphtha flows out to the second naphtha distillation device 227 described later.

The petrochemical apparatus 220 includes an ethylene apparatus 222. The ethylene unit 222 is controlled by the plant system control unit 310, and has a lighter light fraction than the naphtha fractionated by the atmospheric distillation unit 211 of the purification unit 210, and a light naphtha fractionated by the naphtha fractionation unit 212A. The raffinate collected by solvent refining in the debenzene apparatus 212G and the light naphtha fractionated in the first naphtha distillation apparatus 221 of the petrochemical apparatus 220 are flowed in to generate ethylene. That is, the ethylene device 222 generates ethylene, propylene, hydrogen gas, fuel gas, MRG (Methane Rich Gas), and PFN.
The produced hydrogen gas is stored in a hydrogen tank (not shown) separately provided together with the hydrogen gas produced by the hydrogen production apparatus 212C. Further, the generated fuel gas is used, for example, as fuel during operation in the refining device 210. Further, the generated MRG flows out to the hydrogen production apparatus 212C and is used as a raw material for hydrogen production. Further, the PFN is discharged to the reformate fractionator 212F of the refiner 210, and is processed together with the heavy naphtha reformed by the catalytic reformer 212E.

Further, the petrochemical apparatus 220 includes an α-olefin apparatus 223 connected to the ethylene apparatus 222. The α-olefin device 223 is controlled by the plant system control device 310 and generates α-olefin, which is a petroleum product, using ethylene generated by the ethylene device 222 as a raw material.
The by-product generated during the α-olefin generation process flows out into the naphtha desulfurization apparatus 212B of the purification apparatus 210 as a recovered heavy naphtha and is desulfurized.

The petrochemical apparatus 220 includes a polyethylene apparatus 224 connected to the ethylene apparatus 222.
This polyethylene device 224 is controlled by the plant system control device 310, and is made from ethylene produced by the ethylene device 222 and a part of heavy naphtha produced by the desulfurization treatment of the naphtha desulfurization device 212B of the purification device 210. As a petroleum product. The by-product generated during the polyethylene production process flows out into the naphtha desulfurization apparatus 212B of the purification apparatus 210 as a recovered heavy naphtha and is desulfurized.

Further, the petrochemical apparatus 220 includes a styrene monomer apparatus 225 connected to the ethylene apparatus 222.
This styrene monomer device 225 is controlled by a plant system control device 310 and uses as raw materials ethylene purified by the ethylene device 222 and benzene collected by the debenzene device of the purification device 210 as raw materials. Generate. By-products generated during the styrene monomer production process are recovered as fuel gas and used as fuel for the refiner 210, for example.

Further, the petrochemical apparatus 220 includes a polypropylene apparatus 226 connected to the ethylene apparatus 222.
This polypropylene unit 226 is controlled by the plant system control unit 310, and propylene generated by the ethylene unit 222, part of the heavy naphtha generated by the desulfurization process of the naphtha desulfurization unit 212B of the purification unit 210, Polypropylene, which is a petroleum product, is produced using a part of the C8 aroma produced by the xylene unit 212H as a raw material. The by-product generated during the propylene production process flows out into the naphtha desulfurization apparatus 212B of the purification apparatus 210 as a recovered heavy naphtha and is desulfurized.

The petrochemical apparatus 220 includes a second naphtha distillation apparatus 227. The second naphtha distillation device 227 is controlled by the plant system control device 310 and at least a part of the heavy naphtha generated by the desulfurization treatment by the naphtha desulfurization device 212B of the purification device 210 is used as the first naphtha distillation device 227 of the petrochemical device 220. Distillation is performed together with heavy naphtha fractionated by the naphtha distillation apparatus 221. An aromatic device 228 is connected to the second naphtha distillation device 227, and the heavy naphtha subjected to the distillation process flows out to the aromatic device 228.
The aromatic device 228 is controlled by the plant system control device 310, and generates aromatics that are petroleum products such as benzene, toluene, and xylene.
The hydrogen gas generated during the aromatic generation process is stored in a hydrogen tank (not shown) separately provided together with the hydrogen gas manufactured by the hydrogen generator 212C. Moreover, the fuel gas produced | generated in the production | generation process of an aromatic is utilized as a fuel etc. at the time of the driving | running in the refiner | purifier 210, for example. Further, the by-product generated in the aromatic generation process flows out into the naphtha desulfurization apparatus 212B of the purification apparatus 210 as a recovered heavy naphtha and is desulfurized.

  Further, the petrochemical apparatus 220 includes a phenol apparatus 229 connected to the aromatic apparatus 228. This phenol apparatus 229 is controlled by the plant system control apparatus 310 and uses at least a part of benzene produced by the aromatic apparatus 228 and benzene collected by the debenzene apparatus 212G of the purification apparatus 210 as raw materials. Produce phenol as a product.

(Configuration of operation control device)
On the other hand, the operation control device 300 includes a plant system control device 310 and a production plan calculation device 320.
The plant system control device 310 and the production plan calculation device 320 are connected via a network 301 so that signals can be transmitted and received between them. The plant system control device 310 and the production plan calculation device 320 are connected to the plant system control device 310 via the network 301 so as to be able to transmit and receive signals to and from each other.

Here, as the network 301, for example, a plurality of information that can be transmitted and received by the Internet, an intranet, a LAN (Local Area Network), or a wireless medium based on a general-purpose protocol such as TCP (Transmission Control Protocol) / IP (Internet Protocol). Examples include a network such as a communication line network or a broadcast network in which a base station constitutes a network, and a wireless medium itself as a medium for directly transmitting and receiving signals between the plant system control device 310 and the production plan calculation device 320. .
Here, any medium such as radio waves, light, sound waves, and electromagnetic waves can be applied as the wireless medium.

The plant system control device 310 detects the operating state of the plant system manufacturing device 200 and controls the plant system manufacturing device 200 to operate in a predetermined operating state, that is, an operating state where the profit is maximized, that is, optimal production. It is a device that calculates a plan.
For example, as shown in FIG. 3, the plant system control device 310 includes a plant system interface unit 311, a plant system operation unit 312, a plant system display unit 313, a plant system storage unit 314, and a plant system calculation unit 315. , Etc.

The plant system interface unit 311 is connected to the refining device 210 of the plant system manufacturing apparatus 200 and the petrochemical apparatus 220 via the network 301, such as a thermometer installed in each apparatus such as an atmospheric distillation apparatus 211 and an ethylene apparatus 222. A predetermined signal is connected to various sensors 261 such as a flow meter and a pressure gauge.
The plant system interface unit 311 executes input interface processing set in advance for detection signals such as temperature, flow rate, and pressure detected and output by the sensor, and outputs them to the plant system computing means 315 as processing signals. To do. In addition, the plant system interface unit 311 is connected to the production plan calculation device 320 via the network 301 and transmits / receives various signals to / from each other.

The plant system operation means 312 has various operation buttons and operation knobs (not shown) that can be input by an operator, such as a keyboard and a mouse. Input operations such as these operation buttons and operation knobs include setting of the operation contents of the whole plant system control device 310 and setting input of data stored in the plant system storage unit 314. Then, the plant system operation means 312 appropriately outputs an operation signal corresponding to the setting item to the plant system calculation means 315 and causes the plant system calculation means 315 to perform setting input by an input operation of the setting item.
Note that the input operation is not limited to operation of operation buttons, operation knobs, and the like. For example, any input operation capable of setting and inputting various setting items such as an input operation using a touch panel provided in the plant system display unit 313 and an input operation using sound is possible. The configuration can be applied.

The plant system display unit 313 is controlled by the plant system calculation unit 315 to be connected, and displays the image data signal output from the plant system calculation unit 315 on the screen.
Examples of the plant display means 313 include a liquid crystal panel, an organic EL (Electro Luminescence) panel, a PDP (Plasma Display Panel), a CRT (Cathode-Ray Tube), an FED (Field Emission Display), and an electrophoretic display panel. it can.

The plant system storage unit 314 is controlled by the plant system calculation unit 315 to be connected, and stores various data so that the plant system calculation unit 315 can appropriately read. Examples of the plant storage means 314 include a semiconductor disk, a magnetic disk such as an HD (Hard Disk) and an FD (Flexible Disk), an optical disk such as a CD (Compact Disc) and a DVD (Digital Versatile Disc), and a magneto-optical disk. Any configuration in which the plant-system computing means 315 stores various data in a readable manner can be used, such as a configuration including a drive or a driver that can be read in various recording media such as a magnetic tape and a memory card. .
The plant storage unit 314 includes a crude oil database 314A, a naphtha database 314B, and the like.

The crude oil database 314A stores data relating to crude oil. As the data relating to the crude oil, for example, a crude oil name such as a unique identification number, the production area of the crude oil, and the properties of the crude oil are configured in a table structure in which a plurality of crude oil data are recorded as one crude oil data.
The properties of the crude oil in the crude data are, for example, analysis results obtained by analyzing the composition in advance, such as qualitative analysis and quantitative analysis, and the names of the components classified by the fractions as shown in FIGS. 4 and 5 and their ratios. And the names of the compositions classified by the chemical composition as shown in Table 1 and Table 2, that is, based on the distillation calculation, and their ratios.
Here, the chemical composition is classified into, for example, 51 pure components shown in Table 1 and 39 pseudo components shown in Table 2. The pure component is a chemical composition that is a 51 hydrocarbon compound having 1 to 11 carbon atoms, and the pseudo component is a condition that allows distillation calculation from a crude oil distillation curve without problems as shown in FIG. It is a group of compositions in a 39-divided range, and the name (Normal Boiling Point: NBP) is assigned as a reference distillation point with the numerical value of the intermediate temperature in each segment.
The classification by chemical composition based on distillation calculation is not limited to 51 as a pure component and 39 as a pseudo component, but the calculation load becomes too large by dividing into 51 pure components and 39 pseudo components. Highly accurate thermal calculation for producing chemical products from crude oil without any problems.

The naphtha database 314B stores data related to naphtha such as imported naphtha stored in the naphtha tank 257. As the naphtha data, a table in which a plurality of naphtha names, naphtha export bases, naphtha properties, and the like are stored as a single naphtha data, as in the case of the crude oil data stored in the crude oil database 314A. It is structured into a structure.
The property of the naphtha in the naphtha data is data on the name and ratio of the composition classified by the chemical composition classified based on the distillation calculation in the analysis result obtained by the composition analysis such as qualitative analysis or quantitative analysis in advance.

Further, the plant storage means 314 includes thermodynamic characteristic data relating to thermodynamics such as a balance equation such as a gas-liquid equilibrium for producing petroleum products from crude oil, and calorific value, and a refining apparatus 210 and a petrochemical apparatus 220 in each apparatus. Device characteristic data relating to device characteristics such as operation performance, and petroleum product data such as properties and prices of petroleum products to be manufactured are also stored.
Furthermore, the plant system storage unit 314 also stores various programs developed on an OS (Operating System) that controls the operation of the entire plant system control apparatus 310. Further, the plant system storage unit 314 can temporarily store signals processed by the plant system calculation unit 315 during the calculation, that is, also functions as a memory.

The plant system computing means 315 includes, for example, a CPU (Central Processing Unit), and is an input / output port to which the plant system interface unit 311 is connected and an input port to which the plant system operating means 312 is connected, which are various input / output ports (not shown). , A display control port to which the plant system display unit 313 is connected, a storage port to which the plant system storage unit 314 is connected, and the like.
The plant system calculation means 315 includes various operation programs, such as an operation state recognition means 315A, an operation condition recognition means 315B that functions as a crude oil property recognition means, a naphtha property recognition means, and a petroleum product property recognition means, and a production plan calculation means. Plant model calculation means 315C, and the like.

  The operating state recognition unit 315A acquires detection signals output from the sensors of the plant system manufacturing apparatus 200 via the plant system interface unit 311 and recognizes them as the operating state of the plant system manufacturing apparatus 200. Then, the operation state recognition unit 315A outputs the recognized operation state to the plant model calculation unit.

  The operating condition recognizing means 315B acquires operating condition data related to operating conditions described later for details set and input by the production plan calculation device 320 via the plant system interface unit 311 and recognizes it as operating conditions of the plant system manufacturing apparatus 200. . Then, the operation condition recognition unit 315B outputs the recognized operation condition to the plant model calculation unit 315C.

The plant model calculation means 315C models the plant production apparatus 200 based on the thermodynamic property data and the device property data stored in the plant system storage means 314, that is, the devices constituting the refining device 210 and the petrochemical device 220. Based on the thermodynamic property data and the device characteristic data, a thermodynamically connected model is constructed.
Specifically, a plant model represented as shown in FIG. 7 is generated. In this plant model, before and after processing in each device of the plant model, 51 pure components and 39 pseudo components expressed as properties of crude oil and naphtha based on the device characteristics are used to thermodynamically explain from raw materials to petroleum products. It is constructed so that heat is calculated in a liquid equilibrium state.
The plant model calculation means 315C uses the plant model to calculate the production status of the petroleum product that is the operating state of the plant manufacturing apparatus 200 based on the operation state output from the operation state recognition means 315A, A production plan for producing petroleum products is calculated based on the operating conditions output from the condition recognition means 315B.

The production plan to be calculated includes the operating conditions of the plant model that maximizes profits based on the relationship between the cost of raw materials and the price of petroleum products and utility costs such as power, fuel, and steam costs for each device. Calculated.
Here, the raw material costs are based on the raw material data in the operating condition data acquired by the operating condition recognizing means 315B, and the mixing ratio of the crude oil data in the crude oil database 314A, the naphtha data in the naphtha database 314B, and the crude oil stored in the crude oil tank 251. And the charge amount, the naphtha mixing ratio stored in the naphtha tank 257, and the charge amount.
The service cost is calculated based on the amount and price of fuel gas generated in the manufacturing process in the plant model, the amount of electricity and the price.
In addition, as a price of fuel gas, a price is set with the component classified by the fraction as shown in FIG. That is, as the crude oil data in the crude oil database 314A, data relating to the prices of components classified by fractions is also described.
The cost of petroleum products is calculated based on the quantity and price produced. The price of the petroleum product is also recognized based on the petroleum product data stored in the plant storage unit 314.
Then, as a production plan, the value obtained by subtracting the cost of raw materials and utility costs from the cost of petroleum products is used as an objective function, and petroleum products are efficiently manufactured based on the equipment characteristic data of each equipment, with the objective function having the maximum value. In other words, the optimized operating condition, which is the operating condition of each device that maximizes the profit, is calculated.

As the calculation method in the plant model calculation means 315C, heat calculation in the manufacture of petroleum products that are processed in a plurality of apparatuses and return a product in each apparatus to the apparatus in the previous process becomes a relatively complicated system. For example, Sequential Quadratic Programming (SQP), which can be calculated in a very fast time, is used.
The manufacturing status and production plan, which are the calculated results, are appropriately output to and stored in the plant system storage unit 314 and also output to the production plan calculation device 320 via the plant system interface unit 311.

On the other hand, the production plan calculation device 320 of the operation control device 300 uses the plant system control device 310 to compare the production plan for maximizing profits and the actual operation state of the plant system production device 200 to make the plant system production device 200 efficient. It is a device that controls the operation well.
For example, as shown in FIG. 8, the production plan calculation device 320 includes a production plan interface unit 321, a production plan operation unit 322, a production plan display unit 323, a production plan storage unit 324, and a production plan calculation unit 325. , Etc.

The production plan interface unit 321 is provided in each apparatus such as the atmospheric distillation apparatus 211 and the ethylene apparatus 222 constituting the refining apparatus 210 and the petrochemical apparatus 220 of the plant manufacturing apparatus 200 via the network 301, and the temperature and flow rate. An operation unit 262 that operates a heater, a solenoid valve, a pressure valve, and the like for adjusting the pressure is connected so that a predetermined signal can be output.
Then, when a processing signal to be transmitted to the operating unit 262 is input from the production plan calculation unit 325, the production plan interface unit 321 performs output interface processing that is set in advance for the input processing signal. It is executed and outputted as a control signal to the operating unit 262 via the network 301, and the heater, electromagnetic valve, pressure valve, etc. operate in accordance with the operating conditions set by the plant system computing means 315, that is, the plant system manufacturing apparatus 200 is operated. Operate in the set operating condition.
In addition, the production plan interface unit 321 is connected to the plant system control device 310 via the network 301 and transmits / receives various signals to / from each other.

The production plan operation unit 322 has various operation buttons and operation knobs (not shown) that can be input by an operator, like the plant system operation unit 312. Then, the production plan operation means 322 has various setting items such as the setting of the operation contents of the entire production plan calculation device 320, the setting input of data stored in the production plan storage means 324, or the setting input of the operation state of the operating unit 262. When an input operation is performed, an operation signal corresponding to the setting item is appropriately output to the production plan calculation unit 325 and is set and input by the production plan calculation unit 325.
Note that this production plan operation means 322 can be applied to any configuration capable of setting and inputting various setting items such as a touch panel and voice input.

The production plan display means 323 is controlled by the connected production plan calculation means 325 and displays the image data signal output from the production plan calculation means 325 on the screen in the same manner as the plant system display means 313.
Various configurations can also be applied to the production plan display means 323.

The production plan storage unit 324 is controlled by the connected production plan calculation unit 325, and stores various data so that the production plan calculation unit 325 can appropriately read. The production plan storage means 324 also stores various programs developed on an OS (Operating System) that controls the operation of the entire production plan calculation device 320. Further, the production plan storage unit 324 can temporarily store signals processed by the production plan calculation unit 325 during calculation, that is, also functions as a memory.
Note that any configuration can be applied to the production plan storage unit 324 in the same manner as the plant system storage unit 314.

The production plan calculation means 325 includes, for example, a CPU, and is an input / output port to which the production plan interface unit 321 is connected, which are various input / output ports (not shown), an input port to which the production plan operation means 322 is connected, and a production plan display means. A display control port to which H.323 is connected, a storage port to which the production plan storage means 324 is connected, and the like.
The production plan calculation unit 325 includes, as various programs, a raw material property acquisition unit 325A, a petroleum product property acquisition unit 325B, an operation condition acquisition unit 325C, a production plan acquisition unit 325D, a manufacturing status acquisition unit 325E, and an operation. A state comparison unit 325F, a production plan execution unit 325G as an operation control unit, and the like are provided.

The raw material property acquisition unit 325 </ b> A acquires raw material data related to a raw material that is input by an input operation by the production plan operation unit 322 and is data related to an operation condition. This raw material data is, for example, crude oil data relating to crude oil and naphtha data relating to naphtha which is an imported naphtha. Specifically, the names of crude oil and naphtha, their prices, the mixing ratio of the types of crude oil and naphtha flowing into the crude oil tank 251 and naphtha tank 257, the charge amount in the crude oil tank 251 and naphtha tank 257, and the like.
Then, the raw material property acquisition unit 325A inputs the raw material data set and input based on the operation signal corresponding to the input operation from the production plan operation unit 322 to the plant system control device 310 via the production plan interface unit 321. Output. That is, the raw material data is set by the plant system control device 310, and the production plan under the optimum operating condition that maximizes the profit in the plant model is calculated.

The petroleum product property acquisition unit 325B acquires the petroleum product data related to the petroleum product that is input by the input operation by the production plan operation unit 322 and is data related to the operating conditions. This petroleum product data is, for example, the distillation point and composition of the petroleum product that is the property of the petroleum product to be produced.
Then, the petroleum product property acquisition unit 325B receives the petroleum product data set and input based on the operation signal corresponding to the input operation from the production plan operation unit 322 via the production plan interface unit 321, and the plant system control device. To 310.

The operating condition acquisition unit 325C acquires set condition data that is input by the input operation by the production plan operation unit 322 and is data related to the operating condition. As this setting condition data, it is the data regarding the operating conditions for manufacture, such as the flow volume of each apparatus which comprises the plant type manufacturing apparatus 200, and temperature.
Then, the operating condition acquisition unit 325C inputs the setting condition data acquired by setting based on the operation signal corresponding to the input operation of the production plan operation unit 322 to the plant system control device 310 via the production plan interface unit 321. Output.

The production plan acquisition unit 325D acquires the production plan data related to the production plan received from the plant system control device 310 by the production plan interface unit 321. That is, based on the raw material data, petroleum product data, and setting condition data, the plant model calculation means 315C of the plant system control device 310 obtains the calculation result regarding the production plan configured with the optimized operation condition that maximizes the profit in the plant model. To do.
The acquired production plan data is appropriately output to the production plan storage means 324 and stored.

The manufacturing status acquisition unit 325E acquires manufacturing status data related to the manufacturing status in the plant system manufacturing apparatus 200 received from the plant system control apparatus 310 by the production plan interface unit 321. That is, the actual data, which is the manufacturing status calculated corresponding to the plant model by the plant model calculation means 315C of the plant system control device 310, is acquired as manufacturing status data.
The acquired manufacturing status data is appropriately output to the production plan storage means 324 and stored.

The operation state comparison means 325F compares the production plan with the actual result to determine whether or not petroleum products are manufactured according to the production plan in the plant manufacturing apparatus 200. That is, the operating state comparison unit 325F compares the production plan data acquired by the production plan acquisition unit 325D with the manufacturing status data acquired by the manufacturing status acquisition unit 325E, and calculates the magnitude of the error.
The calculation of this error is based on the difference between the operating state detected by the sensor that is the instrument of each device constituting the plant manufacturing apparatus 200 and the optimized operation condition in the plant model, taking into account the standard deviation of the error of each instrument. Calculate. That is, it is calculated by the following formula 1.

(Formula 1)
Error = Σ (measured value of the instrument's instrument-optimized operating conditions of the plant model) / B
B: Standard deviation of instrument error

Then, the operation state comparison means 325F is set in the production plan so that the magnitude of the error is 1000 or less due to the reason that the accuracy of the plant model is solved within a range of accuracy that is not problematic for the actual operation data. A process for adjusting parameters for the flow rate, reaction, distillation, heat transfer, etc. of each device, which is the optimized operating condition, that is, changing the set value of the optimized operating condition.
If the error exceeds 1000, there is a problem that the plant model cannot express the actual operation.
Then, the changed set value of the optimized operation state of the production plan is appropriately output to the production plan storage unit 324 and stored, that is, updated.

The production plan execution means 325G performs operation control for operating the plant manufacturing apparatus 200 based on the production plan data received from the plant system control apparatus 310. The production plan data for operation control is production plan data appropriately updated to a state in which the error is minimized by the operation state comparison unit 325F.
And as operation control, a control signal is output to the operation part 262 of the plant type manufacturing apparatus 200 via the production plan interface part 321, and the operation part 262 is operated based on the control signal to produce the plant type manufacturing apparatus 200. Operate under the optimized operating conditions of the plan.

[Operation of petroleum product manufacturing plant]
Next, the operation of manufacturing a petroleum product will be described as an operation of the above-described petroleum product manufacturing plant. FIG. 9 is a flowchart showing the operation of the operation control apparatus during the petroleum product manufacturing operation.

First, the operation control device 300 enters the operation condition setting input standby state of the plant manufacturing apparatus 200 by the production plan calculation device 320 by supplying electric power (step S101).
That is, the production plan calculation device 320 uses the production plan calculation means 325 to operate the operation condition data regarding the operation conditions, that is, the properties of the petroleum product to be manufactured, the properties of the raw material for manufacturing the petroleum product, and the operation conditions of the plant system manufacturing device 200. A display screen for prompting the setting input is displayed on the production plan display means.
Then, based on the operation signal according to the input operation of the production plan operation means 322 by the operator, the production plan calculation means 325 sets the raw material data in the raw material property acquisition means 325A, and in the petroleum product property acquisition means 325B. Petroleum product data is set, and setting condition data is set by the operating condition acquisition means 325C.
Thereafter, the production plan calculation means 325 has the input raw material data, petroleum product data, and setting condition data, and the plant system controller 310 calculates the production plan based on the plant model for producing the petroleum product with the maximum profit. A request signal for requesting execution is generated. Then, the production plan calculation means 325 outputs the generated request signal to the plant system control device 310 via the network 301 by the production plan interface unit 321.

When the plant system control device 310 receives the request signal transmitted from the production plan calculation device 320 in step S101 by the plant system interface unit 311, the plant system calculation unit 315 is included in the request signal by the plant model calculation unit 315C. Based on raw material data, petroleum product data, and set condition data, which are operating condition data to be operated, the optimized operating conditions in each device in the plant model are calculated, and production plan data is generated (step S102).
That is, the plant model calculation means 315C is based on the plant model in which the components from the raw material to the petroleum product are thermodynamically connected to the gas-liquid equilibrium with 51 pure components and 39 pseudo components, and the petroleum product in the plant model is determined from the operating condition data. Calculating optimized operating conditions for each device that maximizes profit. Then, the plant system calculation means 315 outputs the production plan data generated by the calculation to the production plan calculation device 320 via the network 301 by the plant system interface unit 311.

When the production plan calculation device 320 receives the production plan data transmitted from the plant system control device 310 in step S102 by the production plan interface unit 321 and acquires it by the production plan acquisition unit 325D of the production plan calculation unit 325, the production plan calculation is performed. The means 325 controls the production plan execution means 325G to operate each device of the plant manufacturing apparatus 200 under the optimized operation conditions of the production plan based on the production plan data (step S103).
That is, the production plan execution means 325G sends a control signal for operating each device of the plant system manufacturing apparatus 200 under the optimized operation condition to each operation unit 262 of the plant system manufacturing apparatus 200 via the network 301 by the production plan interface unit 321. The operation unit 262 is operated under the optimized operation conditions, and the plant system manufacturing apparatus 200 is made to manufacture petroleum products according to the production plan.

When the petroleum product is manufactured by the plant system manufacturing apparatus 200 in step S103, the plant system control apparatus 310 causes the plant system operation unit 315 of the plant system calculation unit 315 to operate the plant system via the plant system interface unit 311. The detection signal output from each sensor of the manufacturing apparatus 200 is acquired and recognized as the operation state of the plant manufacturing apparatus 200. The recognition of the driving state, that is, the detection signal is acquired and recognized every predetermined time, for example, every 5 minutes.
Furthermore, the plant system computing means 315 computes the manufacturing status using the plant model based on the operating state recognized by the operating state recognizing means 315A by the plant model computing means 315C, and generates result data (step S104). .
Then, the plant system calculation means 315 outputs real product data relating to the manufacturing status to the production plan calculation device 320 via the plant system interface unit 311 via the network 301.

When the production plan calculation device 320 receives the actual data transmitted from the plant system control device 310 in step S104 by the production plan interface unit 321 and acquires it as the manufacturing status data by the manufacturing status acquisition unit 325E of the production plan calculation unit 325, The operating state comparison unit 325F compares the actual data of the manufacturing status data with the production plan corresponding to the time of the operating status of the actual data (step S105).
Then, the operation state comparison unit 325F calculates the magnitude of the error between the production plan and the actual data based on the above-described equation 1, and determines whether or not the error exceeds a predetermined threshold (step S106).

In step S106, if it is determined that the magnitude of the error calculated by the operating state comparison unit 325F does not exceed a predetermined threshold value, the production plan execution unit 325G performs the petroleum product manufacturing based on the currently implemented production plan. It is determined whether or not to end (step S107). That is, for example, an input operation of a manual stop request for requesting the operator to end production in the plant system operation unit 312 of the plant system control device 310 or the production plan operation unit 322 of the production plan calculation device 320, or a manufacturing process based on the production plan. It is determined whether or not the production is finished.
If it is determined in step S107 that the production is finished, the production of the petroleum product and its control are finished.
On the other hand, if it is determined in step S107 that the production is not finished, the process returns to step S103 and the production of the petroleum product based on the previous production plan is continued.

On the other hand, when it is determined in step S106 that the magnitude of the error calculated by the operation state comparison unit 325F exceeds a predetermined threshold value, the operation state comparison unit 325F determines the plant system manufacturing apparatus 200 that is the optimized operation condition of the production plan. Parameters for flow rate, reaction, distillation, heat transfer, etc. in each apparatus are adjusted to a state where the error becomes a minimum value, that is, the optimization operation condition is changed (step S108), and the process returns to step S103.
That is, operation control for operating the plant manufacturing apparatus 200 is performed based on the production plan updated under the optimized operation condition changed in step S108.

[Operational effects of petroleum product manufacturing plant]
As described above, according to the above-described embodiment, the plant system control device 310 uses the crude oil database 314A and the naphtha database 314B based on the raw material data of the operating condition data set and input by the worker in the production plan calculation device 320. The properties of crude oil and the properties of naphtha fractions are recognized by the chemical composition of 51 pure components and the fractional composition of 39 pseudo components classified based on the crude oil distillation calculation. The properties and quantities of petroleum products manufactured through various processing steps in each apparatus of the plant system manufacturing apparatus 200 as a raw material are recognized by the chemical composition of 51 pure components. Then, based on a plant model in which crude oil and naphtha fractions and petroleum products are connected in a gas-liquid equilibrium state with a chemical composition of 51 pure components and a fraction composition of 39 pseudo components, in each apparatus of the plant production apparatus 200 Optimized operating conditions in the processing process are calculated, and control is performed to operate the plant manufacturing apparatus 200 under the optimized operating conditions.
Therefore, by recognizing the properties of crude oil and naphtha fraction with the chemical composition of 51 pure components and the fraction composition of 39 pseudo components, the same component management from crude oil and naphtha fraction to petroleum products can be achieved. And a plant model of thermodynamic vapor-liquid equilibrium by fraction composition can be easily constructed. In other words, even intermediates produced by refining crude oil and manufacturing petroleum products can be linked in a thermodynamic vapor-liquid equilibrium with the chemical composition of 51 pure components and the fractional composition of 39 pseudo components. Based on the heat calculation by the model, it is possible to easily set the operating conditions in each process in the purification process and the manufacturing process.
Therefore, without changing the conventional refining plant that distills various fractions from crude oil by distillation and the conventional manufacturing plant that produces petroleum products from naphtha distillate, the refining plant and manufacturing process are not changed. It is only necessary to connect the plant to the intermediates generated in each process so that the intermediates can be appropriately flowed and flowable as appropriate, and the operating conditions for producing petroleum products using crude oil and naphtha fractions with different handling and processing as raw materials. Calculation is easily obtained. This makes it easy to control the production of petroleum products using crude oil and naphtha fractions as raw materials, and manufactures petroleum products using crude oil and naphtha fractions in combination to improve production efficiency and reduce environmental impact. Can be easily done.

The chemical composition for component management is a hydrocarbon which is a 51 pure component classified by the naphtha fraction obtained by distillation of crude oil and the boiling point chemical composition corresponding to the lighter light fraction from this naphtha fraction. The fraction composition is an unspecified composition group that corresponds to a heavy fraction fractionated as a heavier fraction than a naphtha fraction obtained by distillation of crude oil, and is classified into a plurality of categories within a predetermined distillation temperature range.
For this reason, intermediates generated in each processing step of crude oil refining treatment and petroleum product manufacturing treatment are also linked by connecting them as a thermodynamic vapor-liquid equilibrium plant model with chemical composition and fraction composition. Even without managing the composition and production amount of the product, the operating conditions in each processing step from the production of crude oil to crude oil can be set and can be calculated easily.
And as a chemical composition, it is produced and managed as a chemical composition of hydrocarbons corresponding to a naphtha fraction and a light fraction that are fractionated by refinement of crude oil and used as a raw material for the production of petroleum products, It corresponds to the heavy fraction that is fractionated by petroleum refining treatment and mixed with unspecified composition as the fraction composition, and is manufactured and managed as an unspecified composition group that is classified and classified by the predetermined distillation temperature range. Therefore, production management can be performed with a sufficient chemical composition for producing petroleum products. That is, it is possible to easily control the production of a target petroleum product with a target amount with high accuracy.

Furthermore, the chemical composition is 51 hydrocarbons having 1 to 11 carbon atoms, and the fraction composition corresponds to heavy fractions that are fractionated as heavier fractions than naphtha fractions by distillation of crude oil. It is an unspecified composition group classified by 39 distillation temperature ranges.
For this reason, even when the chemical composition for production management is 51 and the fractional composition is 39, it is easy to control the production of the target petroleum product with the desired amount with high accuracy, and the computation for the limited management is possible. Rapid calculation and simplification of the configuration of the operation control device 300 can be easily obtained without complicating the heat calculation in the plant model depending on the items.

The plant model calculation means 315C calculates the optimized operating conditions in each device corresponding to each processing step that maximizes the profit when producing petroleum products. In other words, operating conditions that maximize profits are set as operating conditions for each process.
For this reason, it is possible to efficiently produce petroleum products, and easily calculate the operating conditions at each processing step where profits are maximized based on thermal calculation using a plant model. Easy to control.

Based on the properties of the crude oil, naphtha fraction and petroleum product, the cost of the petroleum product and the cost of the raw material are calculated based on the data stored in the plant storage means 314 such as the crude oil database 314A, the naphtha database 314B, and the petroleum product data. Calculate the utility cost required to operate the processing process of the manufacturing equipment, and the objective function of the profit obtained by subtracting the cost of raw materials and utility cost from the cost of petroleum products is the maximum profit. Optimized operating conditions for each processing step are calculated.
For this reason, it is possible to easily calculate the optimized operating conditions in each processing step for manufacturing that maximizes the profit, and to easily perform control for manufacturing.

Further, in each apparatus of the plant model corresponding to the production plan calculated based on the plant model by the plant system control device 310 from the operating condition data set and input by the operator in the production plan calculation device 320, that is, the plant system manufacturing device 200 The optimized operation condition is compared with the actual production of the plant system manufacturing apparatus 200 whose operation is controlled by the production plan calculation apparatus 320 under the optimized operation condition of the production plan, that is, the operation state detected by the sensor 261 of the plant system manufacturing apparatus 200. In order to minimize this error, the parameters of the flow rate, reaction, distillation, heat transfer, etc. of each device of the plant manufacturing apparatus 200 are adjusted, that is, the set values of the optimized operating conditions are changed. .
For this reason, the optimized operation condition of the production plan set based on the plant model is corrected in accordance with the actual result of the production status in the plant system manufacturing apparatus 200, and is appropriate for producing the petroleum product. Control is easily obtained. In particular, since the set optimized operation condition and the operation state based on the detection signal from the sensor 261 are compared, the calculation of the comparison can be easily performed, and the optimum manufacturing control can be easily obtained.
In addition, the measured value of the instrument as the operation state detected by the sensor 261 in comparison with the actual result is calculated by taking into account the standard deviation of the instrument error, that is, by calculating the error between the production plan and the actual result using Equation 1. Therefore, it is possible to make an appropriate comparison with actual results by a relatively easy calculation. Therefore, it is possible to calculate every predetermined time.

  Further, the calculation of the actual result comparison is performed every predetermined time, for example, every 5 minutes, and the optimized operation condition is appropriately corrected each time. For this reason, appropriate production control can be successively monitored, and production of more appropriate petroleum products can be obtained.

[Modification of Embodiment]
Although the present invention has been described with reference to a preferred embodiment, it is not limited to the above-described embodiment, and includes the following modifications as long as the object of the present invention can be achieved. It is a waste.

  For example, as described above, in addition to crude oil and imported naphtha, LPG, light naphtha, heavy naphtha, full-range naphtha, and the like may be used as raw materials. Good.

And although it was set as the structure using each raw material stored in the tank, you may utilize the raw material stored with a tanker directly from a tanker. Moreover, you may utilize the raw material stored elsewhere using the pipeline.
Furthermore, as a configuration in which crude oil and naphtha are mixed and stored in the tank, the mixing ratio is also set and input as the raw material properties. However, for example, crude oil and naphtha are collected from a plurality of tanks that store only the same properties such as for each production area. It is good also as a structure using each.

  Moreover, although the structure of the plant system control apparatus 310 and the production plan calculation apparatus 320 was demonstrated, it is set as the structure which put together the operation control apparatus 300 as one computer etc., for example, the calculation of the results comparison in the production plan calculation apparatus 320 is carried out. The plant system control device 310 and the production plan calculation device 320 may be further divided into a plurality of configurations, such as a plurality of configurations of a computer to be implemented and a computer that controls the operation of the plant manufacturing apparatus 200. .

  And, petroleum products are not limited to ethylene, propylene, olefins, polyethylene, polypropylene, etc. For example, only production control up to ethylene using ethylene as a petroleum product, or production control until other petrochemical products are manufactured It is good also to do.

Furthermore, in the production of petroleum products, the plant system manufacturing apparatus 200 has been described based on the production plan with the maximum profit. For example, the optimum operation conditions based on the characteristics of each apparatus in the plant system manufacturing apparatus 200 are optimized. Operation control may be performed as a condition.
In addition, the optimized operating condition that maximizes profit is not limited to the case where the above-described objective function is used, and any method may be used to calculate the state that maximizes profit.

Then, the production plan has been reviewed and explained as appropriate so as to minimize the error in comparison with the actual results. However, the present invention is not limited to this method. For example, the optimization operation is not performed by any method such as not considering the instrument error of the plant system manufacturing apparatus 200. You may review the conditions.
Further, this error need not be reviewed.
For example, the frequency of review may be set as appropriate, such as reviewing only once every predetermined time such as 5 minutes, or every other day as the predetermined time.

  In addition, the present invention is not limited to the specific structures and procedures in the above-described embodiments, and modifications, improvements, design changes, and the like within the scope that can achieve the object of the present invention are included in the present invention. It is.

It is a block diagram which shows schematic structure of the petroleum product manufacturing plant in one embodiment of this invention. It is a block diagram which shows schematic structure of the plant type manufacturing apparatus of the petroleum product manufacturing plant in the said embodiment. It is a block diagram which shows schematic structure of the plant system control apparatus of the operation control apparatus in the said embodiment. It is explanatory drawing which shows the classification | category by the fraction in the crude oil in the said embodiment. It is a graph which shows the relationship between the distillation curve and fraction in the crude oil in the said embodiment. It is a graph which shows the relationship between the pseudo component in the crude oil in the said embodiment, and a distillation curve. It is explanatory drawing which shows the display screen of the plant model represented by the screen display in the said embodiment. It is a block diagram which shows schematic structure of the production plan calculating apparatus of the operation control apparatus in the said embodiment. It is a flowchart which shows operation | movement of the operation control apparatus at the time of the manufacture operation | movement of the petroleum product in the said embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Petroleum product manufacturing plant as a petroleum product manufacturing apparatus 200 ... Plant system manufacturing apparatus as a manufacturing apparatus 300 ... Operation control apparatus as a petroleum product manufacturing control apparatus 315A ... Operating state recognition means 315B ... Crude oil property recognition means , Operating condition recognizing means 315C functioning as naphtha property recognizing means and petroleum product property recognizing means 315C ... plant model calculating means 325F as production plan calculating means 325F ... operating state comparing means

Claims (14)

A petroleum product production control device for controlling an operating state in a production device for producing petroleum products through various processing steps using crude oil and naphtha fraction as raw materials,
Crude oil property recognition means for recognizing the properties of the crude oil by a chemical composition and a fraction composition classified based on the distillation calculation of the crude oil;
Naphtha property recognition means for recognizing the property of the naphtha fraction by the chemical composition and the fraction composition;
Petroleum product property recognition means for recognizing the property and quantity of the petroleum product by the chemical composition;
Production plan calculation means for calculating operating conditions in the processing step based on a plant model in which the crude oil and the naphtha fraction and the petroleum product are connected in a gas-liquid equilibrium state by the chemical composition and the fraction composition. ,
Operation control means for operating the manufacturing apparatus under the operating conditions calculated by the production plan calculation means;
A petroleum product production control device characterized by comprising: The petroleum product production control device according to claim 1,
Driving state recognition means for recognizing the driving state of the manufacturing apparatus;
The operation control means recognizes an error between the operating condition for operating the manufacturing apparatus and the operating state of the manufacturing apparatus, and corrects the operating condition for operating the manufacturing apparatus by the operation control means in a state where the error is minimized. And a petroleum product production control device comprising: an operating state comparison means. A petroleum product production control device for controlling an operating state in a production device for producing petroleum products through various processing steps using crude oil and naphtha fraction as raw materials,
Crude oil property recognition means for recognizing the properties of the crude oil by a chemical composition and a fraction composition classified based on the distillation calculation of the crude oil;
Naphtha property recognition means for recognizing the property of the naphtha fraction by the chemical composition and the fraction composition;
Petroleum product property recognition means for recognizing the property and quantity of the petroleum product by the chemical composition;
Based on a plant model in which the crude oil, the naphtha fraction and the petroleum product are connected in a gas-liquid equilibrium state by the chemical composition and the fraction composition, a production plan for producing the petroleum product by the production apparatus is calculated. Production plan calculation means;
Operation control means for operating the manufacturing apparatus according to the production plan calculated by the production plan calculation means;
A petroleum product production control device characterized by comprising: The petroleum product production control device according to claim 3,
A record recognition means for recognizing a record of the petroleum product being manufactured in operation of the manufacturing apparatus under the control of the operation control means based on the production plan in the manufacturing apparatus;
An oil product manufacturing control apparatus comprising: an operation state comparison unit that calculates an error between the production plan and the actual result and corrects the production plan so that the error is minimized. The petroleum product production control apparatus according to claim 2 or 4,
The petroleum product production control device, wherein the operation state comparison means performs a process of calculating and correcting the error every predetermined time. A petroleum product production control device according to any one of claims 1 to 5,
The chemical composition is a hydrocarbon classified according to a naphtha fraction obtained by distillation of the crude oil and a boiling chemical composition corresponding to a lighter fraction lighter than the naphtha fraction,
The fraction composition is an unspecified composition group that corresponds to a heavy fraction that is fractionated as a heavier fraction than a naphtha fraction by distillation of the crude oil, and is classified into a plurality of categories within a predetermined distillation temperature range. Petroleum product production control device. A petroleum product production control device according to any one of claims 1 to 6,
The chemical composition is 51 hydrocarbons having 1 to 11 carbon atoms,
The fraction composition is an unspecified composition group classified into 39 distillation temperature ranges corresponding to a heavy fraction fractionated as a heavier fraction than a naphtha fraction by distillation of the crude oil. Petroleum product production control equipment. A petroleum product production control device according to any one of claims 1 to 7,
The said production plan calculating means calculates the optimized operation conditions in the said process process in which the profit at the time of manufacturing the said petroleum product becomes the maximum. The petroleum product manufacturing control apparatus characterized by the above-mentioned. The petroleum product production control device according to claim 7,
The production plan calculating means is used for the cost of the petroleum product, the cost of the raw material, and the operation of the processing process of the manufacturing apparatus based on the property of the crude oil, the property of the naphtha fraction and the property of the petroleum product. By calculating the service cost and subtracting the cost of the raw material and the service cost in the processing step from the cost of the petroleum product, the objective operating function of the profit is the optimized operating condition where the target function is the maximum value. Petroleum product production control device characterized by computing. A petroleum product manufacturing apparatus for manufacturing petroleum products through various processing steps using crude oil and naphtha fractions as raw materials,
A production apparatus for producing the petroleum product by processing the crude oil and the naphtha fraction;
The petroleum product production control device according to any one of claims 1 to 9, wherein the operation state of the production device is controlled,
A petroleum product manufacturing apparatus characterized by comprising: A petroleum product production control method for controlling an operation state in a production apparatus for producing a petroleum product through various processing steps using crude oil and a naphtha fraction as a raw material by a calculation means,
The computing means is
A crude oil property recognition step for recognizing the properties of the crude oil by a chemical composition and a fraction composition classified based on a distillation calculation of the crude oil;
A naphtha property recognition step for recognizing the property of the naphtha with the chemical composition and the fraction composition;
A petroleum product property recognition step for recognizing the property and quantity of the petroleum product by the chemical composition;
Based on a plant model in which the crude oil and the naphtha fraction and the petroleum product are connected in a gas-liquid equilibrium state with the chemical composition and the fraction composition, a production plan computation step for computing operating conditions in the treatment step; ,
An operation control step of operating the manufacturing apparatus under the operating conditions calculated in the production plan calculation step. A petroleum product manufacturing control method, comprising: A petroleum product production control method for controlling an operation state in a production apparatus for producing a petroleum product through various processing steps using crude oil and a naphtha fraction as a raw material by a calculation means,
The computing means is
A crude oil property recognition step for recognizing the properties of the crude oil by a chemical composition and a fraction composition classified based on a distillation calculation of the crude oil;
A naphtha property recognition step for recognizing the property of the naphtha with the chemical composition and the fraction composition;
A petroleum product property recognition step for recognizing the property and quantity of the petroleum product by the chemical composition;
Production for calculating a production plan for producing the petroleum product by the production apparatus based on a plant model in which the crude oil, the naphtha fraction and the petroleum product are connected in a gas-liquid equilibrium state by the chemical composition and the fraction composition. A planned calculation process;
An operation control step of operating the manufacturing apparatus according to the production plan calculated in the production plan calculation step. A petroleum product manufacturing control method, comprising: 10. A petroleum product production control program that causes a computing means to function as the petroleum product production control device according to claim 1. A recording medium recording a petroleum product manufacturing control program, wherein the petroleum product manufacturing control program according to claim 13 is recorded in a readable manner on a calculation means.

Images