KR20150113719A - Crude oil scheduling method and apparatus - Google Patents

Abstract

The present invention relates to a crude oil scheduling method and apparatus, the crude oil scheduling method comprising the steps of: (A) setting, as at least one virtual storage tank, at least one storage tank of at least one oil tanker which will arrive in a loading and unloading area in a predetermined management target period, and determining an ideal crude oil combination process for producing a petroleum product having at least the characteristic condition with reference to information about crude oil stored in at least one virtual storage tank and real storage tanks; and (B) determining loading and unloading for crude oil of at least one storage tank of at least one oil tanker, and determining crude oil combination processes based on loading and unloading for producing a petroleum product having at least one characteristic condition with reference to the information about the loaded and unloaded crude oil; and (C) determining an optimal crude oil combination process of the crude oil combination processes based on loading and unloading. Accordingly, it is possible to optimize a production process in terms of product production management, it is possible to produce an optimal petroleum product by minimizing production costs, it is possible to optimally determine a process plan of crude oil during a predetermined schedule management period, and thus it is possible to optimally manage the overall schedule of an oil refinery such as determination of the kind and quantity of crude oil to be introduced, inventory management, and product production plan according to demand.

Description

[0001] Crude oil scheduling method and apparatus [0002]

The present invention relates to a crude oil scheduling method and apparatus.

Refining refers to the process of refining crude oil, which is a mixture of various hydrocarbon substances, to produce various petroleum products. Petroleum products are collectively referred to as products made through physical and chemical processing of crude oil. Means a mixture of a myriad of compounds combined in various shapes. Generally, petroleum products are mainly used for fuel oil such as gasoline, kerosene, light oil and heavy oil, industrial oil products such as lubricating oil, grease, solvent and naphtha (naphtha), mixed processing oil, asphalt, paraffin wax, gas . In general, 80% of crude oil is fuel used as an energy source and the remaining 20% is raw material.

In order to produce such a variety of petroleum products, it is necessary to determine the type and amount of crude oil needed to produce the petroleum products, to manage the inventory of the imported crude oil, and to plan the production of petroleum products according to demand. The crude oil should be processed according to the overall product production schedule for production.

FIG. 1 is a view for explaining a general crude oil treatment process for producing various petroleum products as described above.

1, crude oil unloaded from oil tankers CV1 and CV2 to crude oil storage tanks ST1 and ST2 and unloaded to storage tanks ST1 and ST2 is transferred to input tanks CT1, CT2 and CT3, Various kinds of crude oil are mixed in tanks (CT1, CT2, CT3). The crude oil blended according to the proper mixing ratio in the input tanks CT1, CT2 and CT3 is introduced into the crude oil purification units CDU1 and CDU2 and the crude oil purification units CDU1 and CDU2 are fed through the distillation process and, It produces petroleum products satisfying the characteristic condition.

As shown in FIG. 1, a first buoy B1 and a second buoy B1, in which a first oil tank CV1 and a second oil tank CV2, respectively storing crude oil of a specific kind, The first oil tanker CV1 and the second oil tanker CV2 are connected to the storage tanks ST1 and ST2 via the oil pipeline (not shown) installed from the boilers B1 and B2 to the storage tanks ST1 and ST2, The crude oil is unloaded to the corresponding storage tanks ST1 and ST2. Here, the type of oil refers to the type of crude oil, and the buoy means buoy for indicating the position, and in FIG. 1, the oil tanker plays a role of indicating an anchorage place.

Typically, oil tankers have one to three storage tanks for storing crude oil, and each storage tank stores a single crude oil. Since the characteristics of crude oil, that is, the nature and state of crude oil differ, depending on the type of crude oil, the characteristics of mixed crude oil will be different if various types of crude oil are mixed.

Referring to FIG. 1, it can be seen that not only a single kind of crude oil is stored in the first storage tank ST1 and the second storage tank ST2 but various kinds of crude oil are mixed and stored.

For reference, crude oil stored in the first oil tanker CV1 is unloaded not only in the first storage tank ST1 but also in the second storage tank ST2. And the crude oil stored in the second oil tanker CV2 is unloaded to the second storage tank ST2. Therefore, different kinds of crude oil are mixed and stored in the second storage tank ST2.

On the other hand, if the first storage tank ST1 of FIG. 1 is examined in detail, it can be seen that various types of crude oil are mixed in the first storage tank ST1. This means that the crude oil stored in the first oil tanker CV1 is unloaded to the first storage tank ST1 in which various kinds of crude oil are already stored.

When various kinds of crude oil are mixed in one storage tank as described above, the characteristics of the mixed crude oil are different according to the type of the crude oil to be mixed. In this case, in order to produce a petroleum product satisfying the characteristic condition, It is not easy to mix crude oil of desired characteristics by obtaining various types of crude oil from the storage tanks ST1 and ST2 for the input tanks CT1, CT2 and CT3 for inputting the crude oil into the crude oil refining units CDU1 and CDU2.

Therefore, it is not easy to produce petroleum products satisfying characteristic conditions that maximize profits with optimal production costs. Here, the characteristic condition means a characteristic condition required to produce a petroleum product such as a content ratio of a specific component such as sulfur or metal, production cost, yield, and profit included in the produced petroleum product.

Then, we will learn the reason why it is necessary to store various types of crude oil in storage tanks.

Korea is a crude oil importing country that imports more than 50 kinds of crude oil at random. However, oil refineries usually do not have as many storage tanks as can be stored separately for various types of crude oil unloaded from oil tankers. Therefore, if the imported crude oil is larger than the number of storage tanks, similar crude oil can not be mixed in the storage tank.

The crude oil processing process, which is the most ideal process for producing the products with the optimum production cost, satisfies the desired characteristic conditions, is to prepare the storage tanks for each type of oil and store only one type of crude oil in one storage tank.

However, in order to store crude oil according to different types of oil, it is necessary to install storage tanks which are enormously costly, so that the installation cost of the storage tanks and the land expenses are required. In addition, the cost of managing and maintaining these dozens of storage tanks is also large. Therefore, it is not realistic from a cost-effective viewpoint to store crude oil in each storage tank by installing storage tanks for each type of oil.

Therefore, when the imported crude oil is unloaded from the oil tanker to the storage tank, various types of crude oil are actually mixed in the storage tank, so that the crude oil stored in the storage tank is unloaded and fluidized. Therefore, it is not easy to obtain an optimum compounding ratio of the oil species suitable for producing a product satisfying the characteristic condition.

Conventionally, when an oil tanker arrives and unloads crude oil into a storage tank, a blend ratio of the oil species necessary for producing a desired product by hand is determined using a general spreadsheet program such as Excel.

In other words, the blending ratio was determined by a simulation method at each stage of unloading, compounding, and inputting of crude oil. Inputting crude oil unloading information, mixing information and input information into a spread sheet, And the final compounding ratio was determined based on the compounding ratio satisfying the conditions that can be immediately realized.

However, the conventional method of determining the blending ratio of crude oil requires a long time to determine the final blending ratio, and it is not possible to flexibly cope with environmental factors such as the arrival delay of the oil tanker and the like. There is a problem that it is not possible to determine the optimum blending ratio of the oil species necessary for production.

Therefore, it is possible to determine the optimal blending ratio of the oil species to produce the products with the optimum production cost and satisfy the desired characteristics, and to smoothly cope with environmental factors such as the arrival delay of the oil tanker, Technology is required.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a crude oil scheduling method capable of optimally producing a petroleum product having various characteristic conditions.

Another object of the present invention is to provide a crude oil scheduling apparatus capable of optimally producing a petroleum product having various characteristic conditions.

According to an aspect of the present invention, there is provided a crude oil scheduling method,

(A) setting at least one or more storage tanks of at least one oil tanker to be arriving at an unloading destination within a schedule management target period as at least one or more virtual storage tanks, and storing the at least one virtual storage tank and the crude oil stored in the actual storage tanks Determining an ideal crude oil blending process for producing a petroleum product having at least one characteristic condition with reference to the information;

(B) determining the unloading of at least one or more storage tanks of the at least one oil tanker with respect to crude oil, referring to the information relating to the unloaded crude oil, Determining processes; And

(C) determining an optimal crude compounding process from among the unloading-based crude compounding processes.

The crude oil scheduling method according to an embodiment of the present invention is characterized in that, prior to the step (A)

(S1) determining a crude oil input plan from at least one or more crude oil input tanks to at least one or more crude oil refinery units (CDU) on a day-by-day basis; And

(S2) determining a crude oil input plan for inputting crude oil from the crude oil inputting tank to the crude oil refining unit based on the determined daily crude oil input plan.

Further, in the crude oil scheduling method according to an embodiment of the present invention, the step (S2)

(S2-1) setting a crude oil starting time to the crude oil refining unit;

(S2-2) determining whether to allocate an input tank for inputting crude oil to the crude oil refining unit;

(S2-3) If it is determined in step S2-2 that the crude oil refining unit is to be allocated with an input tank to which crude oil is to be charged, the operation mode of the crude oil refining unit is set and at least one input Searching the tank;

(S2-4) allocating to the crude oil refining unit an optimal charging tank for the ideal crude oil mixing among the at least one charging tank searched for;

(S2-5) inspecting a charged amount range of the allocated input tank; And

(S2-6) determining an input amount satisfying a predetermined condition within the input amount range.

Also, the crude oil scheduling method according to an embodiment of the present invention includes:

(S2-7) allocating a virtual input tank to the crude oil purification unit when it is determined in the step (S2-2) not to allocate an input tank for inputting crude oil to the crude oil purification unit;

(S2-8) setting a crude oil input amount into the crude oil refining unit; And

(S2-9) calculating the end time of inputting the crude oil into the allocated input tanks or the virtual input tanks to the crude oil refining unit.

Further, in the crude oil scheduling method according to an embodiment of the present invention, the virtual input tank may be a virtual input tank assuming that crude oil can be supplied in an unlimited manner.

Further, the crude oil scheduling method according to an embodiment of the present invention may further include updating crude oil stock information of all the tanks after the step (B).

Further, in the crude oil scheduling method according to an embodiment of the present invention, the step (A)

(A1) selecting a specific input task;

(A2) identifying an available tanker and an available storage tank in the tanker;

(A3) establishing an available storage tank in the available tanker as a virtual storage tank;

(A4) determining whether an input task remains, and if it is determined that the input task remains, proceeding to step (A1); And

(A5) if it is determined in step (A4) that no input task remains, determining an ideal crude compounding process based on the compounding block.

In addition, in the crude oil scheduling method according to an embodiment of the present invention, in the step (A1), the specific input task is a step of selecting a specific input task from the input tank to the crude oil refining unit in order to produce the petroleum product having the at least one characteristic condition Includes tasks related to input,

In the step (A5), the mixing block may include crude oil stored in the storage tanks and stored in the charging tanks by supplying the crude oil stored in the virtual storage tanks to the charging tank.

Further, in the crude oil scheduling method according to an embodiment of the present invention, the step of determining an ideal crude oil mixing process in the step (A5)

Determining an crude blending process as an ideal crude blending process based on the blending block, wherein the crude blending process minimizes the production cost required to produce a profitable petroleum product under the at least one characteristic condition.

Further, in the crude oil scheduling method according to an embodiment of the present invention, the step (B)

(B1) determining unloading of crude oil stored in at least one or more storage tanks in the at least one oil tanker;

(B2) determining the unloading-based crude compounding process for producing the petroleum product having the at least one characteristic condition based on the unloading decision, and determining the amount of the petroleum product produced when the petroleum product is produced by applying the ideal crude compounding process Identifying a difference between a characteristic condition and a characteristic condition of a petroleum product produced when the petroleum product is produced by applying the loading-based crude oil blending process;

(B3) determining whether the difference is allowable, if it is determined that the difference is not acceptable, proceeding to step (B1);

(B4) if the difference is determined to be acceptable in the step (B3), determining a crude unloading decision according to the unloading-based crude oil mixing process;

(B5) determining whether there is an unloaded tanker; And

(B6) If it is determined in step (B5) that there is an unloaded tanker, it is determined whether to continue unloading. If it is determined that the unloading should continue, the process proceeds to step (B1) And then proceeding to step (C).

Further, in the crude oil scheduling method according to an embodiment of the present invention, the step of determining the loading-based crude oil blending process in the step (B2) may include a step of determining whether a petroleum product produced when a petroleum product is produced by applying a specific crude oil blending process The production cost, the production yield, and the profit.

Further, in the crude oil scheduling method according to an embodiment of the present invention, the step (C)

(C1) locking the compounding block;

(C2) determining an optimal crude compounding process from among the unloading-based crude compounding processes based on the determined unloading decision and current or future determination conditions; And

(C3) releasing the compounding block.

In the crude oil scheduling method according to an embodiment of the present invention, the step of locking the mixing block in the step (C1) may include stopping supply of the crude oil stored in the storage tanks and the virtual storage tanks to the input tank Thereby preventing the mixing ratio of the crude oil stored in the input tanks from being changed.

Further, in the crude oil scheduling method according to an embodiment of the present invention, the current determination condition in the step (C2) includes a condition for producing a product capable of calculating a maximum profit at a determination reference time point, The future determination conditions may include conditions that produce a product that can yield the greatest benefit after a predetermined period of time.

In addition, in the crude oil scheduling method according to an embodiment of the present invention, the crude oil mixing process may include a process of determining the mixing ratio of crude oil determined when crude oil stored in each storage tank is supplied to the input tank .

Further, in the crude oil scheduling method according to an embodiment of the present invention, the characteristic condition may include at least one of a characteristic condition, a production cost, a production yield and a profit for a property.

Also, in the crude oil scheduling method according to an embodiment of the present invention, the information on the crude oil in the step (A) may include at least one of crude oil, stock information, property, yield and unit price.

Also, in the crude oil scheduling method according to an embodiment of the present invention, the stock information includes tank information, and the tank information includes a capacity of a tank storing a single type oil, an allowable minimum amount, an inflow rate, The transfer distance of the crude oil, and the capacity of the tank storing a mixture of two or more oil species.

Further, in the crude oil scheduling method according to an embodiment of the present invention, the virtual storage tank may store crude oil of a single kind per tank.

The crude oil scheduling apparatus according to an embodiment of the present invention includes:

A crude oil data processing unit for providing crude oil information;

A factory information processing unit for providing stock information of crude oil;

An oil tanker arrival information processing unit for providing crude oil arrival information; And

And a crude oil scheduling unit for determining an optimum crude oil blending process based on information provided by the crude oil data processing unit, the factory information processing unit, and the tanker arrival information processing unit, and outputting the unloading, blending,

The crude oil scheduling unit,

Setting at least one or more storage tanks of at least one oil tanker to be arriving at an unloading destination within a schedule management target period as at least one or more virtual storage tanks and referring to the information about the crude oil stored in the at least one virtual storage tank and the actual storage tanks An ideal crude oil blending process determination module for determining an ideal crude oil blending process for producing a petroleum product having at least one characteristic condition;

Determining loading and unloading of at least one storage tank of the at least one oil tanker and determining loading and unloading processes for producing a petroleum product having the at least one characteristic condition with reference to information associated with the unloaded crude oil, An unloading decision module for performing the unloading decision; And

And an optimal crude compounding process determination module for determining an optimal crude compounding process from among the unloading-based crude compounding processes.

The crude oil scheduling apparatus according to an embodiment of the present invention includes:

A unit crude oil injection plan determination module for determining, on a day-by-day basis, a crude oil injection plan from at least one or more crude oil input tanks to at least one or more crude oil refinery units (CDU); And

And a crude oil detailed input plan determining module for determining a detailed oil input plan for inputting crude oil from the crude oil inputting tank to the crude oil refining unit based on the determined daily crude oil input plan.

Further, the crude oil scheduling apparatus according to an embodiment of the present invention may further include an inventory information update module for updating crude oil stock information of all the tanks after the unloading decision is completed by the unloading decision module.

According to the embodiment of the present invention, since it is possible to determine optimal processes among the various crude oil unloading, compounding, and input processes necessary for producing petroleum products having various characteristic conditions in terms of production cost and profit, The production process can be optimized and the production cost can be minimized to produce the optimal petroleum product. In addition, since the processing plan of the crude oil can be determined optimally during a predetermined schedule management period, it is possible to flexibly cope with the environmental change factors such as the arrival delay of the oil tanker, And the overall schedule of the refinery, such as product production planning, can be managed optimally.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a diagram illustrating a typical crude oil treatment process for producing a petroleum product.
2 is a flowchart illustrating a crude oil scheduling method according to an embodiment of the present invention.
3 is a detailed flowchart of the step of determining the crude oil input plan in the crude oil scheduling method of FIG.
FIG. 4 is a detailed flow chart of an ideal crude oil mixing process determination step of the crude oil scheduling method of FIG. 2;
FIG. 5 is a detailed flowchart of the unloading determination step in the crude oil scheduling method of FIG. 2;
6 is a detailed flowchart of the steps of determining an optimal crude oil blending process among the crude oil scheduling methods of FIG.
7 is a flow chart of a method for determining optimal oil product production according to an embodiment of the present invention.
FIG. 8 is a block diagram of a crude oil scheduling apparatus to which the crude oil scheduling method according to an embodiment of the present invention shown in FIG. 2 can be applied and a method for determining optimal oil product production according to an embodiment of the present invention shown in FIG. , A block diagram conceptually illustrating the optimal oil product production decision device.
FIGS. 9 to 12 are views for explaining the process of unloading, mixing, and inputting crude oil according to the crude oil scheduling method according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The objectives, specific advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. Also, the terms "first "," second ", "one side "," other ", and the like are used to distinguish one element from another, no. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, detailed description of related arts which may unnecessarily obscure the gist of the present invention will be omitted.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a flowchart illustrating a crude oil scheduling method according to an embodiment of the present invention.

Referring to FIG. 2, the crude oil scheduling method according to an embodiment of the present invention includes determining a crude oil injection plan from at least one crude oil inputting tank to at least one crude oil refining unit (CDU) (S200), determining (S202) a crude oil detail input plan for inputting crude oil from the crude oil inputting tank to the crude oil refining unit based on the determined daily crude oil input plan, Setting at least one or more storage tanks of at least one oil tanker as at least one or more virtual storage tanks and referring to the information about the crude oil stored in the at least one virtual storage tank and the actual storage tanks, (S204) of determining an ideal crude oil blending process for producing the crude oil blending process, Determining loading and unloading of at least one of the storage tanks of at least one oil tanker and referring to information associated with the unloaded crude oil to determine the loading compounding processes for producing the petroleum product having the at least one characteristic condition (S206), updating (S208) the crude oil inventory information of all the tanks, and determining (S210) the optimal crude oil mixing process among the cargo-based crude compounding processes.

In the crude oil scheduling method according to an embodiment of the present invention shown in FIG. 2, the crude oil is not actually transferred to the tanks and the crude oil refining units through the oil pipeline. Instead, the crude oil is unloaded, stored, The optimum oil mixing process required to produce the petroleum product satisfying the characteristic condition, that is, the optimum crude oil blending ratio, is determined based on the assumption that it is introduced into the crude oil refining unit.

The characteristic condition may include at least one of characteristic condition, production cost, production yield and profit for the property. Further, the information on the crude oil may include at least one of crude oil, stock information, property, yield and unit price of the crude oil.

The stock information includes tank information, and the tank information includes a capacity, an allowable minimum amount, an inflow rate, an outflow rate, a transfer distance of crude oil between tanks, and a combination of two or more types of tanks storing a single tarsier And the capacity of the tank in which it is located. In addition, the virtual storage tanks may store a single kind of crude oil for each tank.

The crude oil scheduling method according to one embodiment of the present invention will now be described.

In step S200, a crude oil injection plan is determined on a daily basis from at least one crude oil inputting tank to at least one crude oil refining unit (CDU). In the past, we set up a crude oil injection plan every month, so we had to estimate the amount of crude oil to be processed in a month to estimate the crude oil. Therefore, crude oil scheduling could not be done precisely and efficiently to minimize production costs and maximize profits. In one embodiment of the present invention, the crude oil injection plan is determined on a daily basis, so crude oil scheduling can be done precisely and efficiently to minimize production costs and maximize profits.

In step S202, a crude oil input plan for inputting crude oil from the crude oil inputting tank to the crude oil refining unit is determined based on the daily oil input plan determined in step S200.

This will be described in detail with reference to a detailed flow chart of the crude oil detailed input plan determination step shown in FIG.

In step S300, the start time of putting the oil into the crude oil refining unit in the input tank is set. In step S302, it is determined whether to allocate an input tank to which the crude oil is to be added to the crude oil refining unit.

If it is determined in step S302 to allocate an input tank for inputting crude oil to the crude oil refining unit, in step S304, the operation mode of the crude oil refining unit is set and at least one or more input tanks appropriate for the operation mode are searched.

In step S306, it is determined whether the searched input tanks are usable for crude oil blending. If it is determined that the searched input tanks are not available for crude blending, the process proceeds to step S304 to search again for available tanks for crude oil blending do.

If it is determined that the input tank found in step S306 is available for the crude oil blending, in step S308, the optimal filling tank for the ideal crude oil blending among the at least one of the at least one input tanks is allocated to the crude oil refining unit.

In step S310, the charged amount range of the assigned charging tank is checked, and in step S312, the charged amount that satisfies the predetermined condition is determined within the charged amount range.

If it is determined in step S302 not to allocate the input tank for inputting the crude oil to the crude oil refining unit, the virtual input tank is allocated to the crude oil refining unit in step S314.

The virtual input tank allocation step of step S314 may include allocating to the crude oil refining unit a hypothetical charge tank that is assumed to be capable of supplying unlimited crude oil to the crude oil refining unit so that the at least one characteristic condition The cost of production of petroleum products with

In step S312 and subsequent steps S314 and subsequent steps S316, the amount of crude oil input into the crude oil refining unit is set. In step S318, the amount of crude oil input end time from the allocated input tank or the virtual input tank to the crude oil refining unit is calculated do.

Referring again to FIG. 2, after the crude oil injection plan determination is completed in step S202, the ideal oil blending process is determined in step S204. This will be described in detail with reference to the detailed flowchart of the ideal crude oil mixing process determination step shown in FIG.

After the detailed input plan for crude oil is determined in step S202, a specific input task among the scheduled input tasks is selected in step S400. In step S402, the available oil tankers and the available storage tanks in the oil tanker are identified, and in step S404, the available storage tanks in the available oil tankers are set as virtual storage tanks.

The step S404 is one of the key concepts of the present invention to set the arriving stock type and the quantity of goods stored in at least one storage tank of at least one oil tanker as at least one virtual storage tank, By setting at least one or more storage tanks of at least one oil tanker to be arriving as at least one or more virtual storage tanks, information on the crude oil stored in at least one or more storage tanks for storing the unloaded crude oil, Refers to the information about the crude oil stored in at least one storage tank of the tanker to determine an ideal crude oil blending process in which the production cost required to produce the profitable petroleum product under the one or more characteristic conditions is minimized There.

In step S406, it is determined whether the input task remains. If it is determined that the input task remains, the process proceeds to step S400 and the process is repeated. If it is determined in step S406 that no input task remains, Based on the blend block, the ideal crude blending process is determined.

The specific input task in step S400 includes a task relating to crude oil input from the input tank to the crude oil refining unit to produce the petroleum product having the at least one characteristic condition, and in step S408, Tanks and crude oil stored in the virtual storage tanks and stored in the charge tank by the supply of crude oil to the input tank.

In addition, in step S408, the step of determining an ideal crude oil blending process may include determining a crude oil blending process based on the blending block as an ideal oil blending process that minimizes a production cost required to produce a profitable petroleum product under the at least one characteristic condition Can be determined as a crude oil blending process.

If it is necessary to use only the crude oil in the actual storage tanks of the landfill in determining the ideal crude compounding process for producing petroleum products with characteristic conditions, none.

In other words, even though cheap crude oil to be delivered through the oil tanker can be used instead of crude oil having the characteristics necessary for producing the petroleum product having the above-described characteristic conditions, it is necessary to reflect the crude oil, which is expected to arrive in the past, , It was not possible to determine the crude oil blending process as the ideal crude oil blending process in which the production cost was minimized.

In contrast, in an embodiment of the present invention, at least one or more virtual storage tanks of at least one oil tanker along with the actual storage tanks of the unloading paper are incorporated into various mixing tasks, and then simulated to put the blended crude oil into the crude oil purification unit , It is possible to determine the most ideal crude compounding process that can produce highly profitable petroleum products under the characterization conditions at optimal production costs.

Referring again to FIG. 2, in step S206, it is determined whether the at least one storage tank of the at least one oil tanker is unloaded with crude oil, and referring to information related to the unloaded crude oil, Based crude formulation processes for production.

The detailed description will be made with reference to the detailed flow chart of the unloading determination step shown in FIG.

If an ideal crude compounding process is determined in step S204, then in step S500, the unloading of crude oil stored in at least one or more storage tanks in the at least one oil tanker is determined. The unloading determination can be performed sequentially, but the embodiment of the present invention is not limited thereto.

In step S502, a determination is made based on the unloading decision to determine the unloading-based crude compounding process for producing the petroleum product having the at least one characteristic condition, and the petroleum product produced when the petroleum product is produced by applying the ideal crude compounding process And the characteristic condition of the petroleum product produced when the petroleum product is produced by applying the above-described loading-based crude oil blending process.

In step S504, it is determined whether the difference is allowable. If it is determined that the difference is not allowable, the process proceeds to step S500, and repeats steps S500 and S502.

If it is determined in step S504 that the difference is allowable, the determination of crude unloading according to the unloading-based crude oil blending process is determined.

In step S508, it is determined whether or not there is an unloaded tanker, and if there is no unloaded tanker, the process proceeds to step S208, which is the step of updating the stock information.

If it is determined in step S508 that there is an unloaded tanker, it is determined in step S510 whether or not unloading is to be continued. If it is determined that unloading is to be continued, the process proceeds to step S500. Otherwise, the process proceeds to step S204.

The step of determining the loading-based crude compounding process in step S502 may include determining at least one of a characteristic condition, a production cost, a production yield, and a profit for a property of a petroleum product produced when a petroleum product is produced by applying a specific crude compounding process . ≪ / RTI >

If it is determined in step S206 that all the crude oil stored in the at least one storage tank in the at least one oil tanker is completely loaded, the crude oil stock information of all tanks is updated in step S208.

In step S210, an optimal crude compounding process is determined from among the unloading-based crude compounding processes. This step will be described in detail with reference to a detailed view of the optimal crude compounding process determination step of FIG.

In step S600, the compounding block is locked. In step S602, the optimal crude compounding process is determined among the unloading-based crude compounding processes based on the determined unloading decision and the current or future determination conditions. In step S604, Release the compounding block.

The step of locking the mixing block in step S600 is a step for stopping the supply of the crude oil stored in the storage tanks and the virtual storage tanks to the input tank to prevent the mixing ratio of the crude oil stored in the input tank from being changed .

In addition, in step S602, the current determination condition may include a condition for producing a product capable of calculating a maximum profit at a determination reference time point, and the future determination condition may be a maximum profit after a predetermined period of time And the conditions for producing the product.

In addition, the crude compounding process may include a process for determining the compounding ratio of crude oil determined when crude oil stored in each storage tank is provided to the input tank.

FIGS. 9 to 12 are views for explaining the process of unloading, mixing, and inputting crude oil according to the crude oil scheduling method according to an embodiment of the present invention.

Hereinafter, a crude oil scheduling method according to an embodiment of the present invention will be described in detail with reference to FIGS. 9 to 12. FIG.

9, an oil tanker 1 and an oil tanker 2, which are scheduled to arrive at the unloading area, are displayed along with the arrival time and the docking time in the upper part of FIG. Tanker 1 contains two storage tanks (ARH, ARM) which store two kinds of crude oil respectively, and tanker 2 contains one storage tank (KWT) which stores a single crude oil I suppose.

In FIG. 9, the abscissa represents the time axis. As shown in FIG. 9, the oil tanker 1 and the oil tanker 2 are to arrive at a buoy somewhat distant from the crude oil loading and unloading station at some point, respectively,

In Fig. 9, the length of a line segment indicated by an arrow on both sides indicates time. Since the tanks and crude oil refining units are each connected to a pre-determined oil pipeline, the amount of crude oil transported from the tank to the tank and from the tank to the crude refinery unit is proportional to the transport time, assuming that the feed rate is fixed . Therefore, the time at which the crude oil is transported becomes the amount of the oil to be transported, and eventually controls the amount of transported oil to control the amount of the transferred oil.

For reference, oil pipelines are connected between the crude loading dock and the storage tanks so that any kind of crude oil can be transferred to an arbitrary storage tank. Also, between the storage tanks and the input tanks, Pipelines are connected so that they can be transported to the tank. In addition, oil pipelines are connected between the input tanks and the crude oil refining units so that crude oil stored in a certain storage tank can be transferred to an arbitrary input tank.

9, the storage tanks ARH and ARM of the oil tanker 1 and the storage tanks KWT of the oil tanker 2 are set as virtual storage tanks and the existing storage tanks ST1, ST2, ST3, ST4,. ..) and participates in a blending task where various kinds of blend are mixed together. The storage tank (ARH) of the oil tanker 1 as the virtual storage tank participates in the mixing task 2 and the storage tank (ARM) of the oil tanker 1 as the virtual storage tank and the storage tank (KWT) of the oil tanker 2 participate in the mixing task 3. Participating in the mixing task here means that it is assumed that the crude oil stored in the storage tanks and the virtual storage tanks is transferred to the input tanks CT1, CT2, ... corresponding to a predetermined amount, It means that the blend of crude oil of the kind is made virtually.

In FIG. 9, the storage tanks provided in one or more oil tankers to arrive within a schedule management target period are regarded as virtual storage tanks, and virtual storage tanks, together with existing storage tanks, are virtually participated in various combination tasks, To determine the most ideal crude compounding process to produce the petroleum product satisfying the characteristic condition.

The crude oil blending process is determined as the ideal oil blending process in which the production cost required to produce the profitable petroleum product under the one or more characteristic conditions is minimized.

10, the crude oil stored in the storage tank ARH of the oil tanker 1 is unloaded to the storage tanks ST2 and ST3 and the crude oil stored in the storage tank ARM of the oil tanker 1 is stored in the storage tanks ST3 and ST4 ). Simulation is performed according to the unloading decision and compounding decision to determine the loading-based crude compounding processes suitable for producing petroleum products satisfying the characteristic conditions.

11, the crude oil stored in the storage tank (KWT) of the oil tanker 2 not yet unloaded is determined to be unloaded to the storage tanks ST1 and ST4. Simulation is then performed according to the unloading decision and the mixing decision to satisfy the characteristic condition Based crude compounding processes suitable for producing petroleum products.

After determining the cargo-based crude compounding processes, the determined cargo-based crude compounding processes are compared to the previously determined ideal crude compounding process to finally determine the optimal crude compounding process.

Fig. 12 shows that after the unloading decision of the crude oil stored in the storage tanks of the arrival scheduled oil tanker 1 and the oil tanker 2 is completed, the entire crude oil mixing process may be once again optimized with the unloading determined.

Meanwhile, FIG. 7 is a flowchart illustrating an optimal oil product production decision method according to an embodiment of the present invention.

Referring to FIG. 7, a method for determining optimal oil product production according to an embodiment of the present invention includes calculating a crude oil input plan from at least one crude oil input tank to at least one crude oil refinery unit (CDU) Determining a detailed oil input plan for inputting crude oil from the crude oil inputting tank to the crude oil refining unit based on the determined daily crude oil input plan in operation S702, At least one storage tank of at least one oil tanker to be arriving is set as at least one virtual storage tank and at least one characteristic condition is set with reference to the information about the crude oil stored in the at least one virtual storage tank and the actual storage tanks Determine the ideal crude formulation process to produce the petroleum products you have Determining the unloading of at least one of the at least one storage tank of the at least one oil tanker to the crude oil and referring to the information related to the unloaded crude oil, Determining (S706) the crude compounding processes, updating (S708) the crude oil inventory information of all the tanks, and determining (S710) the optimal crude compounding process from among the unloading-based crude compounding processes, (Step S712).

Steps S700, S702, S704, and S706 in the steps of FIG. S708, and S710 are the same as steps S200, S202, S204, S206, S208, and S210 in FIG. 2, and therefore, description thereof will be omitted.

The optimal oil product production decision method according to an embodiment of the present invention shown in FIG. 7 is a step of adding a step S712 of producing a petroleum product to the crude oil scheduling method according to an embodiment of the present invention shown in FIG. 2 .

In the optimal oil product production decision method according to an embodiment of the present invention shown in FIG. 7, the unloading, mixing, and inputting of crude oil are controlled according to the determined optimum oil mixing process, To be produced at the optimum production cost.

Meanwhile, FIG. 8 is a flowchart illustrating a method for determining optimal oil product production according to an embodiment of the present invention shown in FIG. 2 and an optimal oil product production decision method according to an embodiment of the present invention shown in FIG. Fig. 8 is a block diagram conceptually showing a determination device. Fig.

8 includes a crude oil scheduling apparatus 800 and a product production decision section 822. [

The crude oil scheduling apparatus 800 is an apparatus to which the crude oil scheduling method according to an embodiment of the present invention shown in FIG. 2 can be applied. The crude oil scheduling apparatus 800 includes a crude oil data processing unit 802 for providing crude oil information, a factory information processing unit 804 for providing stock information of crude oil, a tanker arrival information processing unit 806 for providing crude oil arrival information, An optimal oil mixing process is determined based on the information provided by the crude oil data processing unit 802, the factory information processing unit 804, and the tanker arrival information processing unit 806, and crude oil scheduling for outputting the unloading, 808 < / RTI >

The crude oil scheduling unit 808 includes a unitary crude oil injection plan determination module 810 for determining a crude oil injection plan from at least one or more crude oil input tanks to at least one or more crude oil refinery units (CDU) A crude oil detailed input plan determining module 812 for determining a detailed oil input plan for inputting crude oil from the crude oil inputting tank to the crude oil refining unit based on the determined daily crude oil input plan, At least one storage tank of at least one oil tanker to be arriving is set as at least one virtual storage tank and at least one characteristic condition is set with reference to the information about the crude oil stored in the at least one virtual storage tank and the actual storage tanks Ideal crude formulating process for producing petroleum products Determining an unloading of at least one of the at least one storage tank of the at least one oil tanker to crude oil and determining the at least one characteristic condition by referring to information associated with the unloaded crude oil, An unloading determination module 816 for determining unloading-based crude compounding processes for producing the petroleum product having the unloading-based crude oil mixing processes, an inventory information updating module 818 for updating the crude oil stock information of all the tanks, And an optimal crude compounding process determination module 820 for determining an optimal crude compounding process.

The crude oil scheduling unit 808 in the optimal oil product production decision apparatus configured as described above is provided with information on crude oil such as oil types, constants, yields and unit prices provided from the crude oil data processing unit 802, Production / delivery instruction signal to the product production decision unit 822 after determining the optimal crude oil mixing process in which the profit becomes the maximum based on the stock information of the crude oil and the crude oil arrival information provided from the tanker arrival information processing unit 806, .

The product production decision unit 822 processes the crude oil by performing the unloading, compounding and input of the crude oil on the basis of the input unloading / compounding / input instruction signal, thereby obtaining the optimum characteristic condition Is determined.

The methods and apparatuses discussed herein may be implemented using various means, depending on the application. For example, the methods and apparatus may be implemented in hardware, firmware, software, or any combination thereof. In an embodiment involving hardware, the processing unit may comprise one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), field programmable gate arrays (FPGAs), processors, controllers, micro- Microprocessors, electronic devices, other electronic units designed to perform the functions discussed herein, or a combination thereof.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification or improvement is possible.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

CV1: First oil tanker
CV2: Second tanker
B1: Part 1
B2: Part 2
ST1: First storage tank
ST2: Second storage tank
CT1: First charging tank
CT2: Second charging tank
CT3: Third charging tank
CDU1: First crude oil refining unit
CDU2: Second crude oil refining unit
800: Crude oil scheduling device
802: Crude oil data processor
804: factory information processing section
806: Tanker arrival information processor
808: crude oil scheduling unit
810: Daily crude input planning module
812: Crude Oil Detailed Input Planning Module
814: Ideal crude compounding process decision module
816: Unloading decision module
818: Inventory update module
820: Optimal crude compounding process decision module
822: product production decision section

Claims (22)

(A) setting at least one or more storage tanks of at least one oil tanker to be arriving at an unloading destination within a schedule management target period as at least one or more virtual storage tanks, and storing the at least one virtual storage tank and the crude oil stored in the actual storage tanks Determining an ideal crude oil blending process for producing a petroleum product having at least one characteristic condition with reference to the information;
(B) determining the unloading of at least one or more storage tanks of the at least one oil tanker with respect to crude oil, referring to the information relating to the unloaded crude oil, Determining processes; And
(C) determining an optimal crude compounding process from among the unloading-based crude compounding processes.
The method of claim 1, wherein, prior to step (A)
(S1) determining a crude oil input plan from at least one or more crude oil input tanks to at least one or more crude oil refinery units (CDU) on a day-by-day basis; And
(S2) determining a crude oil injection plan for inputting crude oil from the crude oil input tank to the crude oil refinery unit based on the determined daily crude oil input plan.
The method of claim 2, wherein the step (S2)
(S2-1) setting a crude oil starting time to the crude oil refining unit;
(S2-2) determining whether to allocate an input tank for inputting crude oil to the crude oil refining unit;
(S2-3) If it is determined in step S2-2 that the crude oil refining unit is to be allocated with an input tank to which crude oil is to be charged, the operation mode of the crude oil refining unit is set and at least one input Searching the tank;
(S2-4) allocating to the crude oil refining unit an optimal charging tank for the ideal crude oil mixing among the at least one charging tank searched for;
(S2-5) inspecting a charged amount range of the allocated input tank; And
(S2-6) determining an input amount satisfying a predetermined condition within the input amount range.
The method of claim 3,
(S2-7) allocating a virtual input tank to the crude oil purification unit when it is determined in the step (S2-2) not to allocate an input tank for inputting crude oil to the crude oil purification unit;
(S2-8) setting a crude oil input amount into the crude oil refining unit; And
(S2-9) calculating the crude oil input end time from the assigned input tank or the virtual input tank to the crude oil purification unit.
The method of claim 4,
Wherein the virtual input tanks are virtual input tanks assuming that crude oil can be supplied in an unlimited manner.
3. The method of claim 2, wherein after step (B)
And updating the crude oil inventory information of all the tanks.
The method according to claim 1, wherein the step (A)
(A1) selecting a specific input task;
(A2) identifying an available tanker and an available storage tank in the tanker;
(A3) establishing an available storage tank in the available tanker as a virtual storage tank;
(A4) determining whether an input task remains, and if it is determined that the input task remains, proceeding to step (A1); And
(A5) determining an ideal crude compounding process based on the compounding block if it is determined in step (A4) that no input task remains.
The method of claim 7,
Wherein the specific input task comprises a task relating to the input of crude oil from an input tank to a crude oil refinery unit to produce a petroleum product having the at least one characteristic condition,
Wherein the mixing block in step (A5) comprises crude oil that is stored in the storage tanks and stored in the virtual storage tanks, the crude oil being mixed with the input tanks by supply to the input tanks.
8. The method of claim 7, wherein determining an ideal crude oil blending process in step (A5)
Determining as an ideal crude oil blending process a crude blending process that is based on the blending block to minimize production costs for producing high-yielding petroleum products under the at least one characteristic condition.
The method according to claim 1, wherein the step (B)
(B1) determining unloading of crude oil stored in at least one or more storage tanks in the at least one oil tanker;
(B2) determining the unloading-based crude compounding process for producing the petroleum product having the at least one characteristic condition based on the unloading decision, and determining the amount of the petroleum product produced when the petroleum product is produced by applying the ideal crude compounding process Identifying a difference between a characteristic condition and a characteristic condition of a petroleum product produced when the petroleum product is produced by applying the loading-based crude oil blending process;
(B3) determining whether the difference is allowable, if it is determined that the difference is not acceptable, proceeding to step (B1);
(B4) if the difference is determined to be acceptable in the step (B3), determining a crude unloading decision according to the unloading-based crude oil mixing process;
(B5) determining whether there is an unloaded tanker; And
(B6) If it is determined in step (B5) that there is an unloaded tanker, it is determined whether to continue unloading. If it is determined that the unloading should continue, the process proceeds to step (B1) And proceeding to step (C).
The method of claim 10, wherein determining the loading-based crude compounding process in step (B2) comprises: determining characteristics of a petroleum product produced when a petroleum product is produced by applying a particular crude compounding process, The yield, and the profit.
The method of claim 1, wherein the step (C)
(C1) locking the compounding block;
(C2) determining an optimal crude compounding process from among the unloading-based crude compounding processes based on the determined unloading decision and current or future determination conditions; And
(C3) releasing the compounding block.
The method of claim 12,
The step of locking the mixing block in the step (C1) may include stopping supply of the crude oil stored in the storage tanks and the virtual storage tanks to the input tanks to prevent the mixing ratio of the crude oil stored in the input tanks from being changed Wherein the crude oil is a crude oil.
The method of claim 12,
In the step (C2), the current determination condition includes a condition for producing a product capable of calculating a maximum profit at a determination reference time point,
Wherein the future determination condition includes a condition for producing a product that can yield a maximum benefit after a predetermined period of time.
The crude oil scheduling method according to claim 1, wherein the crude oil mixing process includes a process of determining a mixing ratio of crude oil determined when crude oil stored in each storage tank is supplied to an input tank.
The crude oil scheduling method according to claim 1, wherein the characteristic condition includes at least one of a characteristic condition, a production cost, a production yield and a profit for a property.
The crude oil scheduling method according to claim 1, wherein the information on the crude oil in the step (A) includes at least one of crude oil, stock information, property, yield and unit price.
18. The method of claim 17, wherein the inventory information includes tank information, wherein the tank information includes at least one of a capacity of a tank storing a single type of oil, an allowable minimum amount, an inflow rate, an outflow rate, And the capacity of the tank storing the mixed oil.
The crude oil scheduling method according to claim 1, wherein the virtual storage tank stores a single kind of crude oil for each tank.
A crude oil data processing unit for providing crude oil information;
A factory information processing unit for providing stock information of crude oil;
An oil tanker arrival information processing unit for providing crude oil arrival information; And
And a crude oil scheduling unit for determining an optimum crude oil blending process based on information provided by the crude oil data processing unit, the factory information processing unit, and the tanker arrival information processing unit, and outputting the unloading, blending,
The crude oil scheduling unit,
Setting at least one or more storage tanks of at least one oil tanker to be arriving at an unloading destination within a schedule management target period as at least one or more virtual storage tanks and referring to the information about the crude oil stored in the at least one virtual storage tank and the actual storage tanks An ideal crude oil blending process determination module for determining an ideal crude oil blending process for producing a petroleum product having at least one characteristic condition;
Determining loading and unloading of at least one storage tank of the at least one oil tanker and determining loading and unloading processes for producing a petroleum product having the at least one characteristic condition with reference to information associated with the unloaded crude oil, An unloading decision module for performing the unloading decision; And
And an optimal crude compounding process determination module for determining an optimal crude compounding process from among the unloading-based crude compounding processes.
The method of claim 20,
A unit crude oil injection plan determination module for determining, on a day-by-day basis, a crude oil injection plan from at least one or more crude oil input tanks to at least one or more crude oil refinery units (CDU); And
Further comprising a crude oil detail input planning module for determining a crude oil detail input plan for inputting crude oil from the crude oil input tank to the crude oil refinery unit based on the determined daily oil input plan.
23. The method of claim 21,
And an inventory information updating module for updating the crude oil stock information of all the tanks after the unloading decision is completed by the unloading decision module.

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