JPH08225788A - Petroleum product manufacturing method and manufacturing apparatus thereof - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a method for producing a petroleum product, which is capable of performing optimum control and reducing the production cost when producing a petroleum product or a base material thereof. [Structure] A step of distilling crude oil to obtain a base material fraction, a step of purifying the base material fraction to obtain various base materials, a step of storing the respective base materials in a base material tank, In a method for producing a petroleum product, which comprises continuously performing a step of blending a base material to obtain a petroleum product and a step of storing the obtained product in a product tank, the base material is controlled while controlling each of the steps individually. Alternatively, the above steps are optimized and controlled based on the properties of the blended petroleum product. Manufacturing cost can be reduced and production time can be shortened to about 1/5 to 1/10 by performing optimization control in addition to individual control.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for producing petroleum products, and in particular, various petroleum products such as liquefied petroleum gas (LPG), gasoline, naphtha, kerosene, light oil, heavy / reduced light oil, heavy oil and the like. Available for manufacturing.

[0002]

BACKGROUND ART Generally, in the manufacturing process of petroleum products such as gasoline, a distillation process of distilling crude oil to obtain a base fraction, a base fraction being refined by desulfurization, catalytic cracking, catalytic reforming, etc. It includes a refining step for obtaining a base material, a blending step for blending a plurality of types of gasoline base materials to obtain gasoline, and the like.

At this time, in each step, the properties of the obtained base material and the like are confirmed, and the manufacturing conditions are adjusted so that the desired properties can be obtained. For example, after each process such as distillation process and refining process, a semi-finished product tank is installed to temporarily store the semi-finished products processed in each process, and various semi-finished products are sampled from each tank to check the properties. The manufacturing conditions of each process, such as temperature, pressure, and flow rate, are controlled based on the properties. However, the sampling inspection in each tank is time-consuming and requires a large number of tanks, so improvement has been required.

Therefore, the applicant of the present invention has filed Japanese Patent Application Laid-Open No. 6-322.
As disclosed in Japanese Patent No. 378, etc., a property measuring device is installed in the refining device, and the refining control means controls the refining device based on the obtained data, thereby eliminating the need for a sampling inspection of semi-finished products, We have developed a method that can produce petroleum products continuously.

[0005]

However, in various conventional manufacturing methods, each step such as the distillation step, the refining step, and the blending step is individually controlled.
There is a problem that it is difficult to perform optimal control when manufacturing various base materials and products. In other words, conventionally, the properties of the base material etc. obtained in each process were analyzed and each process was controlled based on the data, so there is no relation to the preceding and subsequent processes, and it is better to adjust in the preceding and subsequent processes. Even if it is efficient and the cost can be reduced, it was difficult to perform optimum control because it was controlled for each process.

[0006] In recent years, due to changes in consumer needs and liberalization of the oil industry, petroleum products such as gasoline are required to be differentiated by product performance and to be reduced in manufacturing cost for strengthening competitiveness. It was being done. However, in order to efficiently manufacture products with various characteristics at low cost, it is necessary to finely adjust the blending ratio of various crude oils as raw materials and the manufacturing conditions in each process.
In the conventional method of individually controlling each process, the control range is limited, and it has been difficult to flexibly adjust control conditions to produce a petroleum product.

An object of the present invention is to provide a method for producing a petroleum product and an apparatus for producing the petroleum product, which can perform optimum control and can reduce the production cost when producing a petroleum product or a base material for the petroleum product. .

[0008]

A method for producing a petroleum product according to the present invention comprises a step of distilling crude oil to obtain a base material fraction, and a step of purifying the base material fraction to obtain various base materials. Of a petroleum product, wherein the step of storing each of the base materials in a base material tank, the step of blending each of the base materials to obtain a petroleum product, and the step of storing the obtained product in a product tank are continuously performed. In the manufacturing method, each of the steps is individually controlled, and each of the steps is optimized and controlled based on the properties of the base material or the blended petroleum product.

The base fraction is LPG, naphtha, kerosene, light oil, heavy oil or the like. Distillation conditions of the crude oil may be atmospheric pressure, reduced pressure or increased pressure depending on the purpose. The purification process of the base fraction varies depending on the product to be manufactured, but, for example,
In the gasoline manufacturing process, there are a primary refining process such as a naphtha desulfurization unit, a heavy oil hydrorefining unit, and a heavy oil pyrolysis unit, and a secondary refining process using a naphtha catalytic reforming unit, a catalytic cracking unit, an alkylation unit, etc. Composed.

The properties of the base material or product include octane number, vapor pressure, distillation property (for example, initial boiling point, 10%, 30%,
50%, 70%, 90%, end point), density, composition (for example, benzene content, etc.). The property measurement is not limited to the case where an analyzer is installed and the necessary data is directly measured, but also the case where the property is indirectly measured (estimated) by calculation using other data. For example, if there is a restriction due to piping, space, etc., and it is not possible to install an analyzer that directly measures the data, measure the operation data (temperature, pressure, flow rate, etc.) of the refining device, etc. It may be estimated using the data.

The optimization control is preferably performed by controlling the manufacturing conditions in each step until the base material is obtained and the ratio of various raw materials to be sent to each step, based on the properties of the base material. . Further, the individual control of each step, feed-forward control based on the properties of the raw material supplied from the previous step, and feedback control based on the properties of the semi-finished product, the base material, and the petroleum product obtained in each of the steps. It is preferable to carry out in combination.

Further, the petroleum product manufacturing apparatus according to the present invention comprises a plurality of crude oil tanks, a crude oil distillation apparatus, a refined apparatus for distilled base material fractions, and a plurality of refined stock materials for storing each refined base material. In a petroleum product manufacturing apparatus in which a base material tank, a base material blending device, and a product tank for storing a blended product are continuously provided, a distillation device and a blending device from the crude oil tank and the base material tank are provided. A flow rate adjusting means for adjusting the flow rates of the crude oil and the base material supplied to
A control means for individually controlling the distillation apparatus, the refining apparatus, the blending apparatus and each flow rate adjusting means is provided, and an optimizing means for optimizing the control of the control means based on the properties of the base material or the blended product. Is provided.

Here, the optimizing means includes at least one of a flow rate adjusting means for adjusting the crude oil flow rate, a control means for controlling each apparatus such as a distillation apparatus, a refining apparatus, and the like. It is preferably controlled based on the properties of the material. Further, the control means controls the feed forward control for controlling based on the property of the raw material supplied to each device to be controlled and the property of the semi-finished product, the base material or the petroleum product obtained by each device. It is preferable to use the feedback control together.

[0014]

In the present invention as described above, in addition to the control means for individually controlling each step, the optimization means for controlling each control means based on the properties of the base material or the petroleum product is provided. Each process in the process of obtaining lumber and the process of obtaining petroleum products is optimally controlled, wasteful control in each process is eliminated and manufacturing cost is reduced, and production time is also 1/5 to 1 / It is shortened to about 10.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of a petroleum product, for example, gasoline manufacturing apparatus 1 according to an embodiment of the present invention will be described below with reference to FIGS. The right end side of FIG. 1 (the side on which the property measuring means 41 and the base material tank 18 are provided) and the left end side of FIG. 2 (the side on which the property measuring means 41 and the base material tank 18 are installed) It is continuous, and part of it is duplicated in both figures for easy understanding. Therefore, the manufacturing apparatus 1
Is configured to include all of FIGS. 1 and 2.

The manufacturing apparatus 1 is composed of a plant system device 2 and a control system device 3. The plant system 2 is composed of a base material production line 10 for producing a gasoline mixed base material, and a blending line 20 for blending these various gasoline mixed base materials to produce gasoline which is a petroleum product.

As shown in FIG. 1, the base material production line 10 includes a crude oil tank 11, an atmospheric distillation apparatus 12, a vacuum distillation apparatus 13, and a distilled base material fraction (naphtha, heavy gas oil, heavy oil, etc.). Semi-finished product tank 14 to be put in, primary refining equipment 15 (desulfurization equipment for naphtha, heavy oil hydrorefining equipment, heavy oil pyrolysis equipment, etc.) for desulfurization, decomposition, and refining of base material fractions A semi-finished product tank 16 containing (desulfurized naphtha, desulfurized heavy oil, desulfurized heavy oil, etc.), a secondary refining device 17 for reforming, decomposing, polymerizing, etc.
(Naphtha catalytic reforming device, catalytic cracking device, alkylation device, etc.) and a plurality of base material tanks 18 for storing various gasoline mixed base materials obtained by secondary refining.

As shown in FIG. 2, the blending line 20 includes a blending device (mixing device for manufacturing products) 21 for blending various gasoline mixing base materials, and a product tank 22 for storing the obtained petroleum product (gasoline). Have.

The control system device 3 includes a base material production line 10
Base material production line control device 30 and mixing line 2
And the blending line control device 50 in No. 0. The base material production line control device 30 includes a crude oil property measuring unit 31 provided in the crude oil tank 11, and a flow rate adjusting unit 32 including a valve provided in a pipe from each crude oil tank 11.
And a means 33 for measuring the property of the base material distillate provided at the outlet of the atmospheric distillation apparatus 12, a distillation control means 34 attached to the atmospheric distillation apparatus 12, and an outlet of each semi-finished product tank 14. A flow rate adjusting means 35, a property measuring means 36 for the semi-finished product which is provided at the outlet of the primary refining device 15,
Primary refining control means 37 attached to the primary refining device 15
A flow rate adjusting means 38 provided at the outlet of each semi-finished product tank 16 and a property measuring means 39 for the secondarily refined semi-finished product (base material) provided at the exit of the secondary refining device 17. Secondary refining control means 40 installed side by side with the next refining device 17 and means 41 for measuring the properties of the gasoline mixed base material in the base material tank 18.
And an optimization means 45 for controlling each of the control means 34, 37, 40 based on the measurement data of the property measurement means 41.

The mixing line control device 50 is used for the base material tank 1
8, a flow rate adjusting means 51 provided at the outlet of 8, a gasoline product property measuring means 52 provided between the blending device 21 and the product tank 22, a blend control means 53 provided in the blending device 21, and a blending device 21. And an opening / closing valve 54 provided between the product tanks 22.

Then, each of these control means 34, 37,
40 and 53 are configured as a distributed control system (DCS), and each property measuring means 31, 33, 36, 3 is provided.
A computer network is configured with 9, 41 and 52.

Each property measuring means 31, 33, 36, 39,
41 and 52 are, as illustrated in the property measuring unit 52 shown in FIG. 3, an analyzer 61 that measures an actual property, a property estimating unit 62 that estimates the property, and a measured value and property measuring unit by the analyzer 61. It is provided with a collating means 63 for collating the property estimated value by 62.

As the analyzer 61, for example, a near-infrared analyzer capable of producing an analysis result in conformity with JIS accuracy at intervals of several seconds using a statistical method, a total composition gas chromatography, or the like is used. These analyzers 61 may have different measurement targets depending on the installation location, but normally the octane number,
It is possible to measure mainly density, vapor pressure, distillation property and the like, and composition (benzene content, paraffin content mainly including naphthene and aroma) can be measured.

The analyzer 61, as shown in FIG.
The self-diagnosis means 64 is provided. The self-diagnosis means 64 is
A check system using self-data for checking the state of the measuring device provided in the analyzer 61 itself such as the temperature of the constant temperature bath to check the abnormality of the analyzer 61 itself and the control data of the blend control means 53 and the like. However, it is equipped with two check systems, a check system using control data for checking the failure of the analyzer 61 depending on whether the measurement value of the analyzer 61 changes too much with respect to the change of the control data. There is. The diagnosis result of the self-diagnosis means 64 is transmitted to the distributed control system such as the blend control means 53 and also to the opening / closing valve 54 in the property measuring means 52, and when an abnormality is detected, the valve is immediately released. By closing 54, it is possible to prevent gasoline whose quality cannot be guaranteed from being fed into the product tank 22. Further, the measurement data of the analyzer 61 is also sent to the distributed control system together with the diagnostic result and to the collating means 63.

The property estimating means 62 is a chemical engineering type or statistical analysis method using the temperature, pressure, flow rate, etc. of each device,
The property is estimated by a calculation means such as a neural network method. This property estimation value is also transmitted to the distributed control system and the collating means 63.

The collating means 63 is provided with an actual measurement / estimation collating means 65 for comparing the difference between the actual measurement value by the analyzer 61 and the property estimation value by the property estimating means 62 by a statistical method and verifying whether the value is normal or abnormal. There is. The property measuring means 52
As described above, when two analyzers 61 are provided, the accuracy of the measurement data can be improved by providing the actual measurement collating means 66 that collates the actual measurement values of each analyzer 61. These verification results are sent to the distributed control system and also to the on-off valve 54, and if there is a problem with the verification results, the supply of the product to the tank 22 is stopped.

The blending device 21 mixes the base materials supplied from the base material tank 18, and then mixes colorants and additives as necessary, and then mixes the base materials and the colorant with an agitator such as a static mixer. , The additives can be mixed sufficiently. Although not shown, the colorants and additives are supplied to the blending device 21 via a flow rate adjusting valve that controls the addition ratio.

Next, a method for producing petroleum products, such as gasoline, using the production apparatus 1 will be described. The crude oil sent from the crude oil tank 11 through the flow rate adjusting means 32 is distilled in the atmospheric distillation device 12 and the vacuum distillation device 13 to obtain a base fraction such as naphtha, heavy gas oil and heavy oil.

At this time, the distillation control means 34 uses the property data (octane number, density, vapor pressure, distillation property, composition, etc.) of each crude oil and each base fraction measured by the property measurement device 31, and the atmospheric distillation apparatus. Based on the property data of the base material fraction measured by the property measuring means 33 provided at the outlet of 12, the operating variables such as temperature, pressure and flow rate in the distillation devices 12, 13 and the flow rate adjusting means 32 are controlled. ing. That is, the distillation control means 34 uses both feedforward control based on the properties of crude oil (raw material) and feedback control based on the properties of the distilled base material fraction (semi-finished product) in combination with each of the distillation devices 12, 13 and The flow rate adjusting means 32 is controlled. In addition,
Since the property data from the property measuring unit 33 includes the property estimated value by the property estimating unit 62 in addition to the measured value by the analyzer 61, the distillation control unit 34 controls the property data based on the measured value or the property estimated value. May be performed, or the control may be performed based on the result of collating the actual measurement value and the property estimation value.

The base material fractions obtained in the distillation devices 12 and 13 are supplied to the primary refining device 15 as a refining raw material through the semi-finished product tank 14 and the flow rate adjusting means 35. In the primary refining device 15, refining such as desulfurization is performed to obtain semi-finished products such as desulfurized naphtha, desulfurized heavy gas oil and desulfurized heavy oil. On this occasion,
The primary purification control means 37 is a feedforward control based on the property data of the base fraction from the property measurement means 33 and the control data from the distillation control means 34, and the property measurement means provided at the outlet of the primary purification device 37. By the feedback control based on the property data (measured value or property estimated value) detected by 36, the flow rate adjusting means 35 and the primary refining device 15
Controls operating variables such as temperature, pressure, and flow rate.

The semi-finished products obtained in the primary refining device 15 are stored in the semi-finished product tank 16 by being divided into respective types and supplied to the secondary refining device 17 through the flow rate adjusting means 38 as refining raw materials. In the secondary refining apparatus 17, purification such as catalytic reforming and catalytic cracking is performed to obtain various gasoline mixed base materials. At this time, the secondary refining control means 40, similar to the primary refining control means 37, feedforward control based on the property data of the semi-finished product from the property measuring means 36 and the control data from the primary refining control means 37, Feedback control based on the property data detected by the property measuring unit 39 provided at the outlet of the secondary refining device 40 controls the operating variables such as the temperature, pressure, and flow rate of the flow rate adjusting unit 38 and the secondary refining device 17. There is.

The gasoline mixed base material obtained in the secondary refining device 17 is stored in the base material tank 18. It should be noted that the gasoline mixed base material refined elsewhere may be brought into the base material tank 18, and is stored separately for each type of base material including the amount brought in. The properties of the various gasoline-mixed base materials stored in the base material tanks 18 are measured by the property measuring means 41, and the property data (actually measured values or property estimated values) are transmitted to the optimizing means 45.

The optimizing means 45 calculates a target value for optimizing the properties of the mixed base material based on the properties of the mixed base material, and the secondary refining device 17, the primary refining device 15, and the distillation devices 12, 1 are calculated.
3. The operating variables such as temperature, pressure and flow rate in the flow rate adjusting means 32, 35 and 38 are further controlled to perform optimization control of the base material production line 10. For example, the optimization means 45
Basically, the optimization control of the secondary refining device 17, which is the final step of manufacturing the gasoline mixed base material, is performed first, and when the control of the secondary refining device 17 alone cannot be applied, or when the other than the secondary refining device 17 is not controlled. When it is more efficient to control the apparatus, optimization control is performed by going back to the primary refining apparatus 15, the distillation apparatuses 12, 13, and the flow rate adjusting means 32, 35, 38. For example, the octane number of gasoline is determined by the influence of each base material on each other, and therefore the properties of other base materials must be taken into consideration when manufacturing each base material. For example,
When controlling the catalytic reforming device of the secondary refining device 17, the optimizing means 45 calculates the optimum octane number in the reformed gasoline based on the properties of gasoline (cracked gasoline, etc.) other than the reformed gasoline (minimum manufacturing cost, etc.). The reaction temperature of the catalytic reforming device having the octane number is calculated and set in the secondary refining control means 40 to optimize the control of the reaction temperature of the catalytic reforming device.

On the other hand, the various mixing base materials stored in the base material tank 18 are blended by the blending device 21 via the flow rate adjusting means 51.
Is supplied to. In the blending device 21, each base material tank 1
The base material supplied from No. 8 is blended to produce a predetermined product (gasoline). At this time, the blend control means 53
Similar to the control means 37, 40, etc., the feedforward control based on the property data of the gasoline mixed base material from the property measuring means 39, 41 and the property measuring means 52 provided downstream of the blending device 21 detect the same. The flow rate adjusting means 51 is controlled by feedback control based on the property data of the product, and the flow rate (mixing ratio) of each base material is independently adjusted. That is, the blend control means 53
Calculates the optimum mixing ratio in consideration of the change in the properties of the base material by the manufacturing cost minimum function, and controls the flow rate of each base material by the flow rate adjusting means 51 so that this ratio is achieved. further,
The flow rate control is finely adjusted by the property data of the property measuring means 52. When adding a colorant or an additive, calculate the product by multiplying the product flow rate by the product of the mixing ratio of the colorant and the additive, and calculate the flow rate so that this addition amount becomes the set value. The flow rate is adjusted by the adjusting valve.

The blend control means 53 makes it possible to use the data of both the property measuring means 39 and 41 for the base material immediately after being purified by the secondary refining device 17.
The property may change from that of the base material when stored in the base material tank 18, and for the base material supplied to the blending device 21, the secondary purification device 17 is passed through a bypass pipe bypassing the base material tank 18. This is because there are some that are directly supplied from Japan. Therefore, the property data of the property measuring means 39 is used for the base material directly supplied from the secondary refining device 17, and the property data of the property measuring means 41 is used for the base material supplied from the base material tank 18. It is designed to be used.

The petroleum product (gasoline) blended by the blending device 21 is sent to the product tank 22 and shipped as a product. Conventionally, the quality of the product is guaranteed by sampling and inspecting the product in the product tank 22, but in the present embodiment, the property measurement by the property measuring means 52 in front of the product tank 22 is performed with high accuracy. The quality of the product tank 22 can be assured without any inspection.

That is, the property measuring means 52 is provided with two identical analyzers 61, respectively.
Checks the measured data with the self-diagnosis means 64, and collates the measured values of each analyzer 61 with each other, and collates the property estimated value from the property estimation means 62 and the measured value of each analyzer 61. Because there are four checks,
The reliability of properties can be dramatically improved, and sampling inspection can be eliminated.

The operation status of the manufacturing apparatus 1 as described above is displayed in real time on the operation screen of the distributed control system together with the property data measured by the property measuring means 33, 36, 39 and 52, and the operator Can be confirmed. Furthermore, it is also possible to display the change of each data with respect to the operating time in a graph etc.When the change rate is large, that is, the data is changing rapidly, and there is a possibility that defective products will occur as it is. If it is high, the operator is notified of the abnormality so that the operator can deal with it.

Further, by displaying the manufacturing status of each base material or product and the production plan prepared in advance on the operation screen,
The manufacturing status of each base material and product can be checked and monitored by comparing with the planned value, and the efficient operation of the manufacturing apparatus 1 is realized.

According to the present embodiment as described above, optimization is performed in which each control device 34, 37, 40 in the base material production line 4 is controlled based on the properties of the gasoline mixed base material to indirectly control each process. Since the means 45 is provided, each control means 34,
Compared to the case where only individual process control by 37 and 40 is performed, factors that affect each other over a plurality of processes and factors that cannot be detected only by each process of the substrate production line 4 (property properties brought in, etc.) Control can be performed with consideration. Therefore, the gasoline mixed base material can be efficiently and accurately manufactured, and the stability of the process quality can be dramatically improved even when the base material is continuously produced in the base material production line 4. it can. Further, since the optimization control can be performed in the base material production line 4, the minimum cost control for reducing the production cost can be performed, the production cost can be significantly reduced, and the product can be provided to the consumer at low cost. Furthermore, the production time of petroleum products is 1 / th compared to the conventional one.
It can be shortened to about 5 to 1/10 and various petroleum products can be efficiently produced.

Further, in the base material production line 4 and the blending line 5, the respective control means 34, 3 for controlling the respective steps.
7, 40, 53 always use both feedforward control based on the properties of the raw material supplied to the process and feedback control based on the properties of the semi-finished product obtained in each process. It is possible to perform highly accurate and reliable control with high accuracy.

Further, each property measuring means 33, 36, 39,
In 41 and 52, in addition to the analyzer 61 that actually measures the data, since the property estimation means 63 that estimates the property from various data is provided, it is possible to double-check the properties of each semi-finished product or product by different approaches. Therefore, the reliability of the property is dramatically improved, the reliability of each control based on this property can be improved, and the product having the desired property can be reliably manufactured. In particular, in the property measuring means 52, two analyzers 61 are provided, and the measured values of the respective analyzers 61 are collated with each other and the property estimated value and each measured value are collated with each other. You can check. Therefore, it is not necessary to take a sample of the product in the product tank 22 to check the quality, and the workability can be improved.

Further, since the analyzer 61 (for example, near infrared analyzer or all-composition gas chromatography) capable of producing the analysis result conforming to JIS accuracy by using the statistical method is used, the property measurement is performed at intervals of several seconds. be able to. Therefore, compared to the conventional measurement by sampling, in the present embodiment, the property can be grasped and evaluated in a state as close to real time as possible, and the fluctuation of the measurement data can be immediately reflected in the control, and the reliable control can be performed. In addition to the above, it is possible to reduce the amount of work because the sample collection work is unnecessary. In addition, when the properties are measured at regular intervals during continuous production of each base material and product, the quality of the lot of the part produced while the property is not measured cannot be guaranteed. In this embodiment, since the inspection can be performed in almost real-time, it is possible to confirm and guarantee the quality of all products even in continuous production, and it is possible to manufacture high quality products and improve production efficiency. it can.

Further, in the conventional measurement by sample acquisition, since it is necessary to confirm the quality / property of each tank in which raw materials, semi-finished products, base materials and products are stored and establish a lot, the number of tanks is large. Although necessary, in the present embodiment, since the analyzer 61 capable of continuous analysis is provided, it is not necessary to establish a lot for each tank, and 50 operating tanks are required.
~ 90% reduction. Therefore, in the production of petroleum products, semi-finished products (intermediate products) and stockless production of products can be realized.

Furthermore, the operating operator can confirm the manufacturing status and the like in real time on the operation screen, and can predictably and predictively monitor and check the manufacturing status from the data change amount, and the values and the planned value Can be easily compared,
It is possible to easily produce petroleum products that meet the demands of users according to the demand.

Although the present invention has been described with reference to the preferred embodiment, the present invention is not limited to this embodiment, and various improvements and design changes can be made without departing from the gist of the present invention. Is possible. For example, in the above embodiment, the optimizing means 45 controls each of the control devices 34, 37, 40 based on the property of the base material in the base material tank 18, but the product measured by the property measuring means 52. The control means 34, 37, 40, 53 may be controlled based on the property of However, controlling based on the properties of the base material has the advantage that the factors that affect each other are reduced and the control is easier.

Further, the optimizing means 45 does not necessarily require the respective control means 34, 37, 40 to operate the respective devices 12, 13, 1, 1.
It is not necessary to control all of 5, 5 and the flow rate adjusting means 32, 35, 38, and for example, only the secondary refining device 17 or only the primary refining device 15 may be controlled.

Further, the control means 34, 37, 40, 53 for individually controlling each process are not limited to the control system in which the constant feedback control and the feedforward control are combined, and only the feedback control or the feedforward control is performed. It is also possible to adopt various control methods in which the feedforward control is performed only at the time of rising, and only at the rising time, and then the feedback control is switched to. However, if two types of control methods are combined as in the above embodiment, there is an advantage that efficient and highly accurate control can be performed.

Each property measuring means 31, 33, 36, 39,
41 and 52 are not limited to the configuration of the above-described embodiment, and may be configured by, for example, only the analyzer 61 or only the property estimation unit 62, and further, one analyzer 61 and property estimation unit 62.
And the collating means 63. However, by using at least two types of measurement methods, that is, the analyzer 61 and the property estimation means 62, there is an advantage that it is possible to deal with a failure of the measuring device and the property can be measured accurately.

Further, the arrangement position of the property measuring means is not limited to the above embodiment. That is, as shown in FIG. 4 (A), the property measuring means 33, 36, 39 of the above-described embodiment were installed in the outlet portion of each device, but were arranged as shown in FIG. 4 (B).
As shown in FIG. 4, the semi-finished product processed by each device or the substrate may be arranged downstream of the tank in which the semi-finished product or the substrate is stored.
It may be arranged on the upstream side of the tank as shown in (C).
In particular, when the property changes due to storage in the tank, the arrangement shown in FIG. 4 (B) may be adopted. When the semi-finished product is directly supplied to the next process by bypassing the tank or the property change. If the problem does not occur, the arrangement shown in FIG. 4A or 4C may be adopted.

In the above embodiment, the distributed control system having the individual control means for each process is adopted, but a centralized control system may be adopted. Further, the property estimating means 62 and the collating means 63 in the respective property measuring means 31, 33, 36, 39, 41 are the control means 34, 37, 40,
You may incorporate in 45, 53 grades. Further, in the above-mentioned embodiment, the production of gasoline was described as an example, but the present invention is
In addition to gasoline, it can be used to produce various petroleum products such as LPG, naphtha, kerosene, light oil, and heavy oil.

[0052]

According to the method and apparatus for producing petroleum products of the present invention, optimal control can be performed when producing petroleum products and base materials of petroleum products, and petroleum products having various characteristics can be reduced. It can be manufactured efficiently at cost.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a base material manufacturing line of a petroleum product manufacturing apparatus and a control apparatus therefor according to an embodiment of the present invention.

FIG. 2 is a configuration diagram showing a blending line and a control device for the blending line of the embodiment.

3 is a configuration diagram showing in detail the property measuring means of FIG.

FIG. 4 is a configuration diagram showing a modification of the arrangement position of the property measuring means.

[Explanation of symbols]

 1 petroleum product manufacturing equipment 2 plant equipment 3 control equipment 10 base material production line 11 crude oil tank 12 atmospheric distillation equipment 13 vacuum distillation equipment 14, 16 semi-finished product tank 15 primary refining equipment 17 secondary refining equipment 18 base material tank 20 Blending Line 21 Blending Device 22 Product Tank 30 Base Material Manufacturing Line Control Device 31, 33, 36, 39, 41, 52 Property Measuring Means 32, 35, 38, 51 Flow Rate Adjusting Means 34 Distillation Controlling Means 37 Primary Purification Controlling Means 40 Secondary refining control means 45 Optimization means 50 Blending line control device 53 Blend control means 61 Analyzer 62 Property estimation means 63 Matching means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tsuneharu Shimoe 1-1, Tsumigahita-cho, Shikama-ku, Himeji-shi, Hyogo Idemitsu Kosan Co., Ltd. (72) Inventor, Koji Fujimoto 2-9-32 Nakamachi, Musashino City No. Yokogawa Electric Co., Ltd.

Claims (6)

[Claims] 1. A step of distilling crude oil to obtain a base fraction,
A step of purifying the base material fraction to obtain various base materials; a step of storing the base materials in a base material tank; a step of blending the base materials to obtain a petroleum product; In a method for producing a petroleum product that continuously performs the step of storing in a product tank, the steps are individually controlled, and the steps are optimized based on the properties of the base material or the blended petroleum product. A method for producing a petroleum product characterized by controlling. 2. The method for producing a petroleum product according to claim 1, wherein the optimization control is performed under the production conditions in each step until the base material is obtained and a raw material ratio to be sent to each step,
A method for producing a petroleum product, which is performed by controlling based on the properties of the base material. 3. The method for producing a petroleum product according to claim 1 or 2, wherein the individual control of each step is a feedforward control based on the properties of the raw material supplied from the preceding step, and the individual control in each step. A method for producing a petroleum product, which is carried out in combination with feedback control based on the properties of the obtained semi-finished product, base material or petroleum product. 4. A plurality of crude oil tanks, a crude oil distillation apparatus, a distilled base material fraction purification apparatus, a plurality of base material tanks for storing each refined base material, and a blend of the base materials. In a petroleum product manufacturing apparatus in which an apparatus and a product tank for storing a blended product are continuously provided, a flow rate of crude oil and a base material supplied from the crude oil tank and the base material tank to a distillation apparatus and a blending apparatus is adjusted. Flow rate adjusting means, and a control means for individually controlling the distillation apparatus, the refining apparatus, the blending apparatus and each flow rate adjusting means,
And a means for optimizing the control of the control means based on the properties of the base material or the blended product, and a petroleum product manufacturing apparatus. 5. The petroleum product manufacturing apparatus according to claim 4, wherein the optimizing means includes at least one of a flow rate adjusting means for adjusting the crude oil flow rate, a distillation apparatus, and a refining apparatus. An apparatus for producing petroleum products, which is controlled based on the properties of each base material in the tank. 6. The petroleum product manufacturing apparatus according to claim 4 or 5, wherein the control means controls the feedforward control based on a property of a raw material supplied to each apparatus to be controlled, and each apparatus. An apparatus for producing petroleum products, which is used in combination with feedback control that is controlled based on the properties of the semi-finished product, base material, or petroleum product obtained in step 2.