CN111932105A - Intermittent chemical product scheduling method, storage medium and system - Google Patents
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Abstract
The invention provides a method, a storage medium and a system for scheduling intermittent chemical products, wherein the method comprises the following steps: acquiring product processing requirements, wherein the product processing requirements comprise required product types and required product quantities; determining the number of production lines, the type of materials/the type of public works required by each required product and the duration time required by different materials/public works according to the type of the required product and the number of the required products; and determining a scheduling plan according to the constraint condition that different production lines use different materials/utilities at the same time, and combining the material type/utility type required by each required product and the duration time required by different materials/utilities. The invention realizes the automatic scheduling of the intermittent chemical products from the scheduling to the production device, reduces the operation amount of personnel of the production device and avoids production accidents caused by personnel instruction transmission or operation errors.
Description
Technical Field
The invention relates to the technical field of chemical manufacturing, in particular to a method and a system for scheduling intermittent chemical products.
Background
Batch chemical processes generally refer to: the limited amount of material is processed in one or more apparatuses according to a prescribed processing sequence to obtain a processing of a limited amount of product. The intermittent chemical process has the flexible and changeable characteristic, namely, the intermittent chemical process can produce various products by using the same set of multipurpose and multifunctional equipment, so the intermittent chemical process has an important position in the field of chemical manufacturing.
In the batch chemical process, a set of equipment may produce multiple grades of products, so that a production strategy needs to be established to determine a production plan for each shift, and the production plan may include production tasks of multiple grades of products. On one hand, a process engineer makes a scheduling plan according to an order arranged by scheduling and the current intermediate product storage condition of the device, and downloads the scheduling plan to a production device, and information transmission is carried out among multiple departments needing scheduling, management, production and the like in the process through mails, telephones and the like, so that the workload of multiple parties is increased; on the other hand, during the production of the product, at least one operator needs to keep track of the relevant process parameters, switch to the next production after the production of the batch of the product is completed, and perform a series of operations of valve switching, equipment start/stop and material addition according to the operation rules. In addition, from the safety perspective, the complex trade mark switching work can increase personnel's maloperation risk, and product quality is influenced to light then, and personal safety and property loss are caused to the serious. Therefore, the intermittent chemical product processing mode in the prior art has the problems of low safety and efficiency and large labor consumption.
Disclosure of Invention
The invention aims to provide a method and a system for scheduling intermittent chemical products, which aim to solve the problems of low safety and efficiency and high labor consumption in the intermittent chemical product processing mode in the prior art.
Therefore, a part of embodiments of the present invention provide a method for scheduling intermittent chemical products, including the following steps:
acquiring product processing requirements, wherein the product processing requirements comprise required product types and required product quantities;
determining the number of production lines, the type of materials/the type of public works required by each required product and the duration time required by different materials/public works according to the type of the required product and the number of the required products;
and determining a scheduling plan according to the constraint condition that different production lines use different materials/utilities at the same time, and combining the material type/utility type required by each required product and the duration time required by different materials/utilities.
Optionally, in the above method for scheduling intermittent chemical products, the step of determining the scheduling plan according to the constraint condition that different production lines use different materials/utilities at the same time, and combining the type of material/utility required by each required product and the duration time required by different materials/utilities comprises:
and taking the material type/utility type required by the required product processing process of each production line and the duration required by different materials/utilities as queuing parameters, and obtaining a scheduling plan according to a queuing competition algorithm.
Optionally, in the method for scheduling batch chemical products, in the step of determining a scheduling plan according to the constraint condition that different production lines use different materials/utilities at the same time, in combination with the type of material/utility required by each required product and the duration time required by different materials/utilities, the scheduling plan is represented by the following model:
min[max1≤i≤Xmax1≤k≤Yc(Pi,k)]；
wherein X is the number of types of required products/the number of production lines, Y is the number of types of materials/the number of types of utilities, Pi represents the ith required product, k represents the kth material/utility, and c (P)iAnd k) represents the moment when the ith demand product uses the kth material/utility.
Optionally, in the above method for scheduling intermittent chemical products, the model of the scheduling plan has the following constraints:
product P according to ith requirementiUsing the starting time c (P) of the first material/utility projecti0) and duration t (P) using kth material/utility projectiK), a first constraint is obtained: the ith product PiThe time at which the kth material/utility was used was: c (P)i，k)＝c(Pi，k-1)+t(Pi，k)；
Obtaining a second constraint condition according to the constraints of different materials/utilities used by different production lines in the same time: abs (c (P)i，k)-c(Pj，k))+abs(c(Pi，k-1)-c(Pj，k-1))≥t(Pi，k)+t(Pj，k)，j＝1，2，3，……，X；i≠j。
Optionally, in the batch chemical production scheduling method, the required product P is obtained according to the following manneriDuration t (P) using kth materiali，k)：
Acquiring and processing ith demand product PiThe initial value and the required value of the kth material on the production line; determining a demand product P according to the initial value of the kth material and the difference value between the demand valuesiDuration t (P) using kth materiali，k)。
Optionally, in the above method for scheduling batch chemical products, in the scheduling plan, the step of processing the required product in each production line is divided into N steps, where N is the maximum value among the actual processing steps of all kinds of required products.
Optionally, in the above method for scheduling batch chemical products, in the scheduling plan, all steps of processing the required products in the production line are divided into N steps:
and if the actual processing step number of the required product is less than N, setting a blank step in the step of processing the required product by the production line.
Optionally, the method for scheduling batch chemical products further includes the following steps:
and responding to the scheduling plan confirmation signal, and controlling the corresponding production line to execute the processing of the required product according to the processing plan of the required product of each production line in the scheduling plan.
Another embodiment of the present invention further provides a storage medium, where the storage medium stores program instructions, and a computer reads the program instructions and then executes any one of the above methods for scheduling intermittent chemical products.
Another embodiment of the present invention further provides an intermittent chemical product scheduling system, including an upper computer, where the upper computer includes at least one processor and at least one memory, at least one of the memories stores program instructions, and after reading the program instructions, at least one of the processors executes any one of the intermittent chemical product scheduling methods.
Optionally, the system for scheduling intermittent chemical products further includes a communication server and a production scheduling subsystem:
the communication server is in communication connection with the upper computer and the production scheduling subsystem; the communication server forwards the initial values of the materials on the production line sent by the production scheduling subsystem to an upper computer, and forwards the scheduling plan sent by the upper computer to the production scheduling subsystem;
the production scheduling subsystem is provided with a display screen, and the display screen is used for displaying the scheduling plan; the production scheduling subsystem is also used for responding to the production line processing plan selection signal to extract the production line required product processing plan in the scheduling plan, and controlling the corresponding production line to execute the processing of the required product according to the production line required product processing plan.
Compared with the prior art, the technical scheme provided by the embodiment of the invention at least has the following beneficial effects: the invention realizes the automatic scheduling of the intermittent chemical products from the scheduling to the production device, reduces the operation amount of personnel of the production device and avoids production accidents caused by personnel instruction transmission or operation errors.
Drawings
FIG. 1 is a flow chart of a batch chemical production scheduling method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the division of the processing steps of the products required by different production lines according to one embodiment of the present invention;
FIG. 3 is a schematic diagram of the scheduling process of four brands of ADI-100, ADI-100R, ADI-100Q, ADI-98 according to one embodiment of the present invention;
FIG. 4 is a schematic diagram of a process for scheduling four brands of HMDI-65, HMDI-80P, liquefied HMDI products in accordance with one embodiment of the present invention;
FIG. 5 is a schematic diagram of a hardware connection of a system for performing a flowchart of a method for scheduling intermittent chemical products according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a hardware connection relationship of a system for executing a flowchart of a method for scheduling intermittent chemical products according to another embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device or assembly referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In the following embodiments provided in the present application, unless mutually contradictory, different technical solutions may be mutually combined, and technical features thereof may be mutually replaced.
The embodiment provides a method for scheduling intermittent chemical products, which can be applied to a host of a scheduling system of intermittent chemical products, as shown in fig. 1, the method may include the following steps:
s101: and acquiring product processing requirements, wherein the product processing requirements comprise required product types and required product quantities. Processing requirements may be determined by orders placed by market demands. The type of the required product can be determined by the product brand, for example, for the MDI product, a plurality of product brands such as MDI-100, MDI-50F and the like exist in the market at present, products with different brands have different isomeric ratio compositions and additives, so that the required materials can be determined according to the type of the required product, and the materials can be raw materials or additives and the like.
S102: and determining the number of production lines, the type of materials/the type of utilities required by each required product and the duration required by different materials/utilities according to the type of the required product and the number of the required products. As previously mentioned, the processing capacity of the lines is limited and each line is independent and can be used to produce a product, with the selection of how many lines to choose being determined by the type and quantity of products required.
S103: and determining a scheduling plan according to the constraint condition that different production lines use different materials/utilities at the same time, and combining the material type/utility type required by each required product and the duration time required by different materials/utilities. Utility refers to the same engineering operations that different production lines may employ. Since the desired product is a mature product, the materials/utilities required for each of the above types of processes are available.
By the scheme, the automatic scheduling of the intermittent chemical products from the scheduling to the production device is realized, the operation amount of personnel of the production device is reduced, and production accidents caused by personnel instruction transmission or operation errors are avoided.
In some embodiments, the automatic scheduling plan is preferably implemented by using a queuing competition algorithm based on a C + + platform, and the scheduling plan may be obtained according to the queuing competition algorithm with the material type/utility type required for the required product processing of each production line and the duration required for different materials/utilities as queuing parameters. Specifically, the scheduling plan is represented by the following model:
min[max1≤i≤Xmax1≤k≤Yc(Pi,k)]；
wherein X is the number of types of required products/the number of production lines, Y is the number of types of materials/the number of types of utilities, Pi represents the ith required product, k represents the kth material/utility, and c (P)iAnd k) represents the moment when the ith demand product uses the kth material/utility.
The model has constraint conditions, and the model and the constraint conditions can be obtained in the following mode:
(1) for the product manufacturing process with X independent production lines (each production line can only produce 1 product) and Y materials/public works, the product P is produced according to the ith demandiUsing the starting time c (P) of the first material/utility projecti0) and duration t (P) using kth material/utility projectiK), a first constraint is obtained: the ith product PiThe time at which the kth material/utility was used was: c (P)i，k)＝c(Pi，k-1)+t(PiK); namely:
c(Pi，1)＝c(Pi，0)+t(Pi，1)；
c(Pi，2)＝c(Pi，1)+t(Pi，2)；
c(Pi，3)＝c(Pi，2)+t(Pi，3)；
……；
c(Pi，Y)＝c(Pi，Y-1)+t(Pi，Y)。
(2) obtaining a second constraint condition according to the constraints of different materials/utilities used by different production lines in the same time:
abs(c(Pi，k)-c(Pj，k))+abs(c(Pi，k-1)-c(Pj，k-1))≥t(Pi，k)+t(Pj，k)；
j＝1，2，3，……，X；i≠j。
from this it can be determined that the automatic scheduling model is as follows:
min max1≤i≤Xmax1≤k≤Yc(Pi,k)；
the constraint conditions are as follows:
c(Pi，k+1)＝c(Pi，k)+t(Pi，k+1)；
abs(c(Pi，k)-c(Pj，k))+abs(c(Pi，k-1)-c(Pj，k-1))≥t(Pi，k)+t(Pj，k)；i＝1，2，3，……，X；j＝1，2，3，……，X；i≠j；k＝1，2，3，……，Y。
and obtaining an optimal scheduling plan under the order according to the model.
In the scheme, the required product P can be obtained according to the following modeiDuration t (P) using kth materialiAnd k): acquiring and processing ith demand product PiThe initial value and the required value of the kth material on the production line; determining a demand product P according to the initial value of the kth material and the difference value between the demand valuesiDuration t (P) using kth materialiK). Wherein the initial value of the kth material is the amount of material left in a manufacturing tank or a reaction kettle after the previous batch of products is processed. Assuming that the required value is 100%, i.e., the manufacturing tank or the reaction vessel is filled, and half of the material remaining in the manufacturing tank or the reaction vessel after the previous batch of products is processed, the initial value can be set to 50%. The time required for adding the materials can be considered as the time required for making the material amount in the tank or the reaction kettle from 50-100% when the time required is calculated, so that the actual required time of each material can be accurately obtained, and a more accurate scheduling plan can be obtained.
Preferably, in order to simplify the step division and the arrangement of the processing batches of the required products in the processing requirement process of the production line, in the scheduling plan, the step of processing the required products of each production line is divided into N steps, where N is the maximum value among the actual processing steps of all kinds of required products, and if the actual processing steps of the required products are less than N, an idle step is set in the step of processing the required products of the production line. In a specific implementation, as shown in fig. 2: the production scheduling program is in a sequential function graph form, the program is in a layered structure and has N layers, each layer is provided with M independent programs, wherein M is the number of production lines which can independently manufacture chemical products and are arranged in the system, and N is the number of steps of the production line with the most independent steps. The production scheduling program takes the 'sequencing condition + product independent production step' as a standard unit. For different products, the steps using the same raw material/additive/utility project are positioned in the same layer of the production scheduling program, each product independent production step has its corresponding product making program, and the product which does not relate to the raw material/additive/utility project is represented by a blank step in the layer, and the program directly skips the layer to enter the next layer when running. Two adjacent independent steps of each production line are connected through a queuing condition, and the queuing condition is the sequence of different products given by the automatic production scheduling model when the same raw material/additive/public engineering is called.
The implementation process of any intermittent chemical product scheduling method in the scheme can further comprise the following steps: and responding to the scheduling plan confirmation signal, and controlling the corresponding production line to execute the processing of the required product according to the processing plan of the required product of each production line in the scheduling plan. The scheduling plan confirmation signal can be obtained by clicking by an operator through operating a mouse, the operator can see the scheduling plans including the required product processing plans of all production lines through a display screen of the system, and after the scheduling plans are confirmed by operating the mouse, the production lines can be started to start processing operation according to the required product processing plans.
Compared with the traditional manual production method in the intermittent chemical process, the manual production method provided by the embodiment of the invention has the following advantages: (1) production instruction transmission of a scheduling, scheduling and processing plan execution device is automatically realized, and production accidents caused by personnel communication errors are reduced; (2) the production order scheduling is converted into a scheduling plan with the shortest time consumption through an intelligent algorithm, so that the workload of engineers is reduced, and the production efficiency of the device is improved; (3) the automatic execution of the scheduling plan is realized through the production scheduling program and the product making program, the workload of device operators is reduced, and production accidents caused by misoperation of the operators are avoided.
The production scheduling implementation process and the effects thereof in the above scheme are described in detail by two specific examples.
Example one:
a certain chemical plant has four brands of ADI-100 and ADI-100R, ADI-100Q, ADI-98, and is provided with 6 independent product production lines, wherein a 1# production line and a 2# production line are used for producing ADI-100, a 3# production line is used for producing ADI-100R, and a 4# production line and a 5# production line are used for producing ADI-100Q, and a 6# production line is used for producing ADI-98. In the four products, ADI-100 and ADI-100R need to use ADI and additive A, ADI-100Q needs to use ADI and additives B and C, ADI-98 needs to use ADI and additive C, and the four products need to use 8 kg of saturated steam (abbreviated as 8S) as a heat source in the reaction stage. Before the scheme is implemented, a daily dispatcher sends an order to a process engineer by using a mail so as to obtain a required product. The implementation of the scheme in the chemical plant comprises the following implementation steps:
(1) using DELL T630 as an upper computer and an EMRSON OPC server as a communication server to build a hardware network of the automatic product manufacturing system;
(2) and (3) finishing the establishment of a scheduling instruction transfer module and an automatic scheduling model by using a C + + algorithm on the upper computer, wherein the automatic scheduling model comprises the following steps:
min max1≤i≤6max1≤k≤5c(Pi,k)；
the constraint conditions are as follows:
c(Pi，k+1)＝c(Pi，k)+t(Pi，k+1)；
abs(c(Pi，k)-c(Pj，k))+abs(c(Pi，k-1)-c(Pj，k-1))≥t(Pi，k)+t(Pj，k)；i＝1，2，3，4，5，6；j＝1，2，3，4，5，6；i≠j；k＝1，2，3，4，5。
(3) creating a production scheduling program on a DCS platform by using a sequential function chart, wherein the program structure is shown in FIG. 3; each module in the program is designed with an automatic execution program in a sequential control mode.
After the system is implemented by the device, communication, production scheduling and production steps which originally need to be carried out manually can be automated, the operation amount is reduced by 8 man hours/day, and the product manufacturing efficiency of the device is improved by 15%.
Example two:
a chemical plant has four grades of HMDI-65, HMDI-80P and liquefied HMDI products, and is provided with 5 independent product production lines, wherein a 1# production line is used for producing the HMDI-65, a 2# production line is used for producing the HMDI-80, a 3# production line is used for producing the HMDI-80P, and a 4# production line and a 5# production line are used for producing the liquefied HMDI. Among the four brands, HMDI-65 requires the use of raw materials HMDI and antioxidant A, HMDI-80 requires the use of raw materials HMDI, antioxidant B and stabilizer C, HMDI-80P requires the use of raw materials HMDI and antioxidant B, liquefied HMDI requires the use of raw materials HMDI, antioxidant B and crosslinking aid D, and liquefied HMDI requires the use of 2 kg of saturated vapor (abbreviated as 2S) as a heat source during the reaction stage. Before the scheme is implemented, the scheduling personnel send orders to a process engineer every day, so that the types and the number of the required products are obtained. The implementation of the scheme in the chemical plant comprises the following implementation steps:
(1) using DELL T640 as an upper computer and an EMRSON OPC server as a communication server to build a hardware network of the automatic product manufacturing system;
(2) and finishing the establishment of a scheduling instruction transmission module and an automatic scheduling model by using C language on the upper computer, wherein the automatic scheduling model comprises the following steps:
min max1≤i≤5max1≤k≤6c(Pi,k)；
the constraint conditions are as follows:
c(Pi，k+1)＝c(Pi，k)+t(Pi，k+1)；
abs(c(Pi，k)-c(Pj，k))+abs(c(Pi，k-1)-c(Pj，k-1))
≥t(Pi，k)+t(Pj，k)；
i＝1，2，3，4，5；j＝1，2，3，4，5；i≠j；k＝1，2，3，4，5，6。
(3) creating a production scheduling program on a DCS platform by using a sequential function chart, wherein the program structure is shown in FIG. 4; each module in the program is designed with an automatic execution program in a sequential control mode.
After the system is implemented by the device, communication, production scheduling and production steps which originally need to be carried out manually can be automated, the operation amount is reduced by 16 man hours/day, and the manufacturing efficiency of device products is improved by 22%.
Some embodiments of the present invention provide a storage medium, wherein the storage medium stores program instructions, and a computer reads the program instructions and executes any one of the above batch chemical production scheduling methods.
Some embodiments of the present invention provide an intermittent chemical product scheduling system, including an upper computer 100, as shown in fig. 5, where the upper computer 100 includes at least one processor 101 and at least one memory 102, at least one of the memories stores program instructions, and after reading the program instructions, at least one of the processors executes the intermittent chemical product scheduling method in the above method embodiment.
As shown in fig. 6, the intermittent chemical product scheduling system may further include:
the communication server 200 is in communication connection with the upper computer 100 and the production scheduling subsystem 300; the communication server 200 forwards the initial values of the materials on the production line sent by the production scheduling subsystem 300 to the upper computer 100 for the upper computer 100 to generate a scheduling plan, and forwards the scheduling plan sent by the upper computer 100 to the production scheduling subsystem 300; the production scheduling subsystem 300 is configured with a display screen for displaying the scheduling plan; the production scheduling subsystem 300 is further configured to respond to the production line processing plan selection signal to extract a production line required product processing plan in the scheduling plan, and control a corresponding production line to execute processing of a required product according to the production line required product processing plan. In the scheme, the scheduling system can be realized by adopting a DCS (distributed control system), can automate the intermittent chemical production process, can be used for making a scheduling plan by replacing personal experience of engineers through an algorithm, replaces traditional manual information transmission through data transmission, replaces the manual product manufacturing process of operators through a control program, reduces accidents in the aspects of information transmission and production operation caused by human factors, and reduces the labor intensity of personnel.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (11)
1. A production scheduling method for intermittent chemical products is characterized by comprising the following steps:
acquiring product processing requirements, wherein the product processing requirements comprise required product types and required product quantities;
determining the number of production lines, the type of materials/the type of public works required by each required product and the duration time required by different materials/public works according to the type of the required product and the number of the required products;
and determining a scheduling plan according to the constraint condition that different production lines use different materials/utilities at the same time, and combining the material type/utility type required by each required product and the duration time required by different materials/utilities.
2. The method for scheduling batch chemical products according to claim 1, wherein in the step of determining the scheduling plan according to the constraint condition that different production lines use different materials/utilities at the same time, and combining the type of materials/utilities required by each required product and the duration of the different materials/utilities required:
and taking the material type/utility type required by the required product processing process of each production line and the duration required by different materials/utilities as queuing parameters, and obtaining a scheduling plan according to a queuing competition algorithm.
3. The method for scheduling batch chemical products according to claim 2, wherein in the step of determining the scheduling plan according to the constraint condition that different production lines use different materials/utilities at the same time, in combination with the type of materials/utilities required for each required product and the duration of the different materials/utilities required, the scheduling plan is represented by the following model:
min[max1≤i≤Xmax1≤k≤Yc(Pi,k)]；
wherein X is the number of types of required products/the number of production lines, Y is the number of types of materials/the number of types of utilities, Pi represents the ith required product, k represents the kth material/utility, and c (P)iAnd k) represents the moment when the ith demand product uses the kth material/utility.
4. The batch chemical production scheduling method according to claim 3, wherein the model of the scheduling plan has the following constraints:
product P according to ith requirementiUsing the starting time c (P) of the first material/utility projecti0) and duration t (P) using kth material/utility projectiK), a first constraint is obtained: the ith product PiThe time at which the kth material/utility was used was: c (P)i，k)＝c(Pi，k-1)+t(Pi，k)；
Obtaining a second constraint condition according to the constraints of different materials/utilities used by different production lines in the same time: abs (c (P)i，k)-c(Pj，k))+abs(c(Pi，k-1)-c(Pj，k-1))≥t(Pi，k)+t(Pj，k)，j＝1，2，3，……，X；i≠j。
5. A method according to claim 4, wherein the desired product P is obtained byiDuration t (P) using kth materiali，k)：
Acquiring the ith processing requirementProduct PiThe initial value and the required value of the kth material on the production line;
determining a demand product P according to the initial value of the kth material and the difference value between the demand valuesiDuration t (P) using kth materiali，k)。
6. The batch chemical production scheduling method according to any one of claims 1 to 5, characterized in that:
in the scheduling plan, the steps of processing the required products in each production line are divided into N steps, wherein N is the maximum value of the actual processing steps of all kinds of required products.
7. The batch chemical product scheduling method according to claim 6, wherein in the scheduling plan, all steps of processing the required products by the production line are divided into N steps:
and if the actual processing step number of the required product is less than N, setting a blank step in the step of processing the required product by the production line.
8. A method for the scheduling of batch chemicals according to any one of claims 1 to 5, further comprising the steps of:
and responding to the scheduling plan confirmation signal, and controlling the corresponding production line to execute the processing of the required product according to the processing plan of the required product of each production line in the scheduling plan.
9. A storage medium having stored therein program instructions, the program instructions being readable by a computer for performing the batch chemical production scheduling method according to any one of claims 1 to 8.
10. An intermittent chemical product scheduling system, comprising an upper computer, wherein the upper computer comprises at least one processor and at least one memory, at least one memory stores program instructions, and at least one processor reads the program instructions and executes the intermittent chemical product scheduling method according to any one of claims 1 to 8.
11. The intermittent chemical product scheduling system of claim 10, further comprising a communication server and a production scheduling subsystem:
the communication server is in communication connection with the upper computer and the production scheduling subsystem; the communication server forwards the initial values of the materials on the production line sent by the production scheduling subsystem to an upper computer, and forwards the scheduling plan sent by the upper computer to the production scheduling subsystem;
the production scheduling subsystem is provided with a display screen, and the display screen is used for displaying the scheduling plan; the production scheduling subsystem is also used for responding to the production line processing plan selection signal to extract the production line required product processing plan in the scheduling plan, and controlling the corresponding production line to execute the processing of the required product according to the production line required product processing plan.
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