TW201329879A - Decision support system for determining production of oxygen - Google Patents

Abstract

A decision support system for determining production of oxygen is disclosed. The decision support system is used to determine production of oxygen producing systems. The decision support system includes an energy consumption database, an oxygen consumption database, a schedule analyzing module, an information integration module, and a production plan module. The energy consumption database stores productivity values of the oxygen producing systems. The oxygen consumption database stores oxygen consumption values of working schedules. The schedule analyzing module chooses expected oxygen consumption values from the oxygen consumption database in accordance with the working schedules of working machines. The information integrating module determines expected total oxygen demands in accordance with the expected oxygen consumption values of the working schedules of the working machines. The production plan modules determine the production of the oxygen producing systems in accordance with the productivity of each of the oxygen producing system and the expected total oxygen demands.

Description

Oxygen production decision support system

The present invention relates to an oxygen production decision support system, and more particularly to an oxygen production decision support system for a steel or ironworks.

When a steel mill or ironworks heats a smelting product in a smelting furnace, it requires a very high temperature to melt the metal to produce the desired product. Current practice uses multiple oxygen production systems to generate oxygen, which is stored in an oxygen storage tank. The oxygen storage tank supplies the oxygen to downstream smelting production equipment (such as blast furnace or converter) according to the operator's setting, so that the inside of the equipment has sufficient oxygen to support combustion, and the steel production equipment maintains a certain temperature to continue working.

Since different products are manufactured using different production schedules, and the amount of oxygen required for each production schedule is different from each other, the amount of oxygen required for the steel production equipment to be used in each production schedule is also different. In addition, due to the different old and new oxygen production systems, the required energy consumption is different under the same oxygen production. For the above reasons, the oxygen production system needs to calculate the amount of oxygen required for various production schedules by manpower, and allocate the amount of oxygen that each oxygen production system needs to produce separately to minimize energy consumption. As a result, these complicated steps must be repeated once for each different production schedule, which would waste manpower, production costs and time. If the amount of oxygen generated is too large, it can only be discharged, which will also waste production costs.

Therefore, how to develop an oxygen production decision support system that can improve the lack of conventional technology is an urgent need for research and development.

One aspect of the present invention is directed to an oxygen production decision support system for recording the amount of oxygen required for various production schedules and for assisting an operator in planning the amount of oxygen required for each oxygen production system in accordance with various production schedules. Minimize the total energy consumption of the oxygen production system.

According to an embodiment of the present invention, an oxygen production decision support system is provided for determining a plurality of oxygen production quantities of a plurality of oxygen production systems, wherein the oxygen production decision support system includes a device energy consumption database and a production mode oxygen data. Library, downstream production scheduling analysis module, information integration module and oxygen production planning module. The equipment energy consumption database is used to store the oxygen production efficiency value of the oxygen production system. The production mode oxygen database is used to store the oxygen content of the production schedule corresponding to the plurality of downstream production schedules of the plurality of downstream machines. The downstream production scheduling analysis module is configured to select the expected scheduling oxygen amount from the production scheduling oxygen amount according to the work schedule performed by the working machine of the downstream machine, wherein the work scheduling is the downstream production scheduling. At least one. The information integration module is used to determine the expected total oxygen demand based on the expected schedule oxygen consumption of the work schedule and the preset production of the work machine. The oxygen production planning module is used to determine the oxygen production capacity of the oxygen production system based on the oxygen production conditions, wherein the oxygen production conditions include the oxygen production efficiency value of the oxygen production system and the expected total oxygen demand.

It can be seen from the above description that the oxygen production decision support system of the embodiment of the present invention can determine the total oxygen demand of the downstream production equipment according to the preset downstream equipment production schedule and the instantaneous oxygen demand returned by the downstream equipment, and then determine the total oxygen demand of the downstream production equipment, and then Based on this total oxygen demand, the amount of oxygen that each oxygen production system needs to produce separately is determined. This assists the operator of the oxygen production system in making oxygen production decisions to minimize the total energy consumption of the oxygen production system.

Please refer to FIG. 1 , which is a block diagram showing an oxygen production path according to an embodiment of the present invention. When a steel or ironworks produces iron or steel, oxygen is produced using a plurality of oxygen production systems 100, and oxygen is stored in the oxygen storage tank 101. The oxygen storage tank supplies the oxygen to the downstream machine according to different production modes of different products, such as blast furnace 102 (steel making) or converter 103 (iron making), so that the furnace has enough oxygen to support combustion, and let the furnace Maintain a certain temperature to continue the production of steel or iron. The oxygen production decision support system 200 obtains information about the oxygen production system 100, the oxygen storage tank 101, and the downstream machines 102, 103 through the data transmission system 104.

Referring to FIG. 2 and FIG. 1 , FIG. 2 is a functional block diagram showing an oxygen production decision support system 200 according to an embodiment of the present invention. The oxygen production decision support system 200 includes at least an equipment energy consumption database 201, a production mode oxygen database 202, a downstream production scheduling analysis module 203, an information integration module 204, and an oxygen production planning module 205.

First, since the oxygen production system 100 is different, the production efficiency values of the respective oxygen production systems 100 (for example, the energy consumption required to generate the same amount of oxygen) are different, so that a plurality of oxygen production systems 100 must be pre-set. The production efficiency values are stored in the equipment energy consumption database 201. In this embodiment, the production efficiency value is expressed by a single-variable or multi-variable regression equation (ie, a regression model), but embodiments of the present invention are not limited thereto. In other embodiments of the invention, the production efficiency values may also be represented by other mathematical equations.

Then, because the downstream machine will use different production modes to produce molten iron or steel, the downstream machine will have different production schedules to correspond to these production modes, and these production schedules will correspond to different Production scheduling oxygen. In the present embodiment, the production mode is related to conditions such as the product produced by the machine, the production quantity of the product, the condition of the production machine site, and the like, but the embodiment of the present invention is not limited thereto. These production schedule oxygen quantities are stored in the production mode oxygen database 202. In this embodiment, the production schedule oxygen amount is expressed by a single variable or a multivariable regression equation, however, in other embodiments of the present invention, the production efficiency value may also be expressed by other mathematical equations.

The downstream production scheduling analysis module 203 obtains the relevant information of the working machine and its production schedule through the data transmission system 104, and then uses the plurality of oxygen data banks 202 from the production mode according to the production schedule of the working machine. In the oxygen content of the production schedule, the oxygen amount of the scheduled schedule is selected.

The information integration module 204 determines the expected total oxygen demand based on the expected amount of oxygen required for the production schedule of all working machines. In the present embodiment, the information integration module 204 integrates the oxygen production amount of the oxygen production system 100 and the oxygen demand of the working machine. However, in other embodiments of the present invention, since the actual oxygen consumption of the working machine may be different from the expected oxygen consumption in the database, the information integration module 204 can integrate the gas pressure in the oxygen storage tank 101. (ie, oxygen reserves) and the instantaneous oxygen consumption information of the working machine to estimate the total oxygen demand, wherein the instantaneous oxygen consumption of the working machine can utilize the Domain Name System (DNS) or Instant database system to capture.

The oxygen production planning module 205 is configured to determine the oxygen production amount of each of the oxygen production systems 100 based on oxygen production conditions, wherein the oxygen production conditions include an oxygen production efficiency value of the oxygen production system and an expected total oxygen demand to cause oxygen. The production volume is the closest to the downstream production schedule and the total electricity consumption is the lowest, so that resource waste can be avoided and the highest economic benefits can be achieved. In the present embodiment, the oxygen production condition further includes a preset minimum oxygen emission amount of the oxygen storage tank 101, and the preset minimum oxygen emission amount is the minimum oxygen emission amount required for the oxygen storage tank 101. By adding minimum oxygen emissions to the oxygen production conditions, the waste of oxygen can be reduced and the electrical energy required for oxygen production can be saved.

As can be seen from the above description, the oxygen production decision support system 200 can include an equipment energy consumption database 201, a production mode oxygen database 202, a downstream production scheduling analysis module 203, an information integration module 204, and an oxygen production planning module 205. To estimate the oxygen demand, and appropriately plan the oxygen production plan of the oxygen production equipment to achieve energy saving effect.

In addition, in order to further improve the oxygen production decision support system 200, the oxygen production decision support system 200 may further include a reservoir pressure prediction module 206, a warning system 207, and a user interface 208.

The reservoir pressure prediction module 206 is configured to predict the estimated gas pressure value of the oxygen storage tank 101 according to the oxygen production amount of the oxygen production system 100 and the instantaneous oxygen consumption of the working machine, and transmit the estimated gas pressure value to The information integration module 204 is for the user of the decision support system 200 to assess whether the current oxygen production is too much or too little. The warning system 207 is configured to determine whether to issue an abnormal warning message according to the difference between the expected oxygen consumption and the instantaneous oxygen consumption and the tolerance range of the preset oxygen consumption difference. For example, when the difference between the scheduled oxygen consumption and the instantaneous oxygen consumption is greater than the tolerance range, it indicates that the downstream machine may not be produced according to the preset production schedule, so the oxygen production decision support system 200 controls the warning system. 207 sends a warning message to notify the user of the decision support system 200.

The warning system 207 can also determine whether to issue an abnormal warning message according to the instantaneous gas pressure value of the oxygen storage tank 101 and the preset pressure tolerance range. When the instantaneous gas pressure value of the oxygen storage tank 101 falls outside the pressure tolerance range, it indicates that the oxygen storage capacity has been excessive or too small, and the warning system 207 also issues a warning message to notify the user of the decision support system 200.

In the embodiment of the present invention, the abnormal warning message sent by the alert system 207 may be a voice message or a text message, but embodiments of the present invention are not limited thereto.

The user interface module 208 is used to pass the information integration module 204 to obtain the abnormal warning message, the instantaneous gas pressure value of the oxygen storage tank 101, the instantaneous oxygen consumption of the working machine, the oxygen production of the oxygen production system, and The estimated gas pressure value of the oxygen storage tank 101 and the like are displayed on the display. The user interface module 208 allows the operator to instantly monitor the real-time status of the various systems and components within the oxygen generation decision support system 200, and can make immediate adjustments based on the system status.

An example of how the alert system 207 of the oxygen production decision support system 200 operates will be described below.

Please refer to Fig. 1 and Fig. 2 again. When the blast furnace or converter starts working, it is necessary to input the production schedule corresponding to the product to be produced in advance, so that the oxygen production decision support system 200 can collect the oxygen demand and work according to the production schedule. time. Since oxygen production system 100 does not all work during oxygen production, for example, only seven of the seven oxygen production systems 100 are in operation, at which point the oxygen production decision support system 200 will be in accordance with the downstream production scheduling oxygen demand, plus equipment. In the energy consumption database 201, the individual production efficiency values of the three oxygen production systems 100 in operation are used to plan the oxygen production per unit time of the three oxygen production systems 100, so that the energy consumption of the oxygen production system 100 is the lowest. . If the gas pressure inside the oxygen storage tank 101 is higher than the upper limit of the preset pressure tolerance range, for example, 5 atmospheres (atm), the oxygen production decision support system 200 will notify the operator through the user interface 208, and the operator The oxygen production capacity of the oxygen production system 100 can be adjusted based on this information, and the oxygen production planning module 205 will re-plan the individual oxygen production of the three oxygen production systems 100 to reduce oxygen production. Through the immediate monitoring of the user interface 208, the oxygen production system 100 can be adjusted at any time based on production conditions.

If there is no change in the production status, the user interface 208 will show the future pressure change trend of the oxygen storage tank 101, and the operator can decide at his own discretion that no adjustment is needed. It can be seen that the oxygen production decision support system 200 of the present invention can be used to adjust the oxygen production amount, but the embodiment of the present invention is not limited thereto. In other embodiments of the present invention, the oxygen production decision support system 200 can also be used only as an information system to assist the operator in making decisions, and the production operator can decide whether to make adjustments or whether to perform variable load setting, that is, oxygen production adjustment. In addition, when the actual production is different from the prior schedule, that is, the actual production amount is different, the schedule information is abnormal, the gas pressure in the oxygen storage tank 101 is too high, and the product purity and specifications are not met, the abnormality notification is performed through the warning system 207.

In summary, the oxygen production decision support system of the embodiment of the present invention can assist an operator in making an information system for decision making, so as to monitor the status of all systems in real time, so as to save manpower, and can automatically adjust when making oxygen production decisions. Or it is still set by the operator. This method is a safety consideration to avoid misjudgment caused by system failure and cause a dangerous incident. Through the calculation of the internal database of the decision-making system and the oxygen production planning module, the total energy consumption of all oxygen production systems can be minimized to achieve the most economical benefit.

While the invention has been described above in terms of several embodiments, it is not intended to limit the scope of the invention, and the invention may be practiced in various embodiments without departing from the spirit and scope of the invention. The scope of protection of the present invention is defined by the scope of the appended claims.

100. . . Oxygen production system

101. . . Oxygen storage tank

102. . . blast furnace

103. . . Converter

104. . . Data transmission system

200. . . Oxygen production decision support system

201. . . Equipment energy database

202. . . Production mode oxygen database

203. . . Downstream production scheduling analysis module

204. . . Information integration module

205. . . Oxygen production planning module

206. . . Reservoir pressure prediction module

207. . . Warning system

208. . . user interface

1 is a block diagram showing an oxygen production path in an embodiment of the present invention. .

Figure 2 is a block diagram showing the oxygen production decision support system in this case.

200. . . Oxygen production decision support system

201. . . Equipment energy database

202. . . Production mode oxygen database

203. . . Downstream production scheduling analysis module

204. . . Information integration module

205. . . Oxygen production planning module

206. . . Reservoir pressure prediction module

207. . . Warning system

208. . . user interface

Claims (10)

An oxygen production decision support system for determining a plurality of oxygen production quantities of a plurality of oxygen production systems, wherein the oxygen production decision support system comprises: an equipment energy consumption database for storing a plurality of oxygen of the oxygen production systems Production efficiency value; a production model uses an oxygen database to store a plurality of production scheduling oxygen corresponding to a plurality of downstream production schedules of a plurality of downstream machines; and a downstream production scheduling analysis module for Selecting at least one expected scheduling oxygen amount from the production scheduling oxygen levels according to at least one work schedule performed by the at least one working machine of the downstream machines, wherein the at least one working schedule is the At least one of a downstream production schedule; an information integration module for determining an expected total oxygen demand based on the at least one expected schedule oxygen amount of the at least one work schedule; and an oxygen production planning module And determining the oxygen production amount of each of the oxygen production systems according to an oxygen production condition, wherein the oxygen production condition includes the oxygen production system Oxygen production efficiency and the expected total value of the oxygen demand. The oxygen production decision support system of claim 1, wherein the information integration module further captures at least one instantaneous oxygen consumption of the at least one working machine, the oxygen production decision support system further comprises: a storage tank pressure The predicting module is configured to predict the gas pressure value of one of the oxygen storage tanks according to the oxygen production amount of the oxygen production system and the at least one instantaneous oxygen consumption of the at least one working machine. The oxygen production decision support system of claim 2, further comprising a warning system for determining a difference between the at least one expected schedule oxygen amount and the at least one instantaneous oxygen amount and a preset oxygen amount difference The value tolerance ranges to determine whether to issue an exception warning message. The oxygen production decision support system according to claim 3, wherein the oxygen produced by the oxygen production systems is stored in the oxygen storage tank, and the warning system is further used according to an instantaneous gas pressure value of the oxygen storage tank. And a preset pressure tolerance range to determine whether to issue the abnormal warning message. The oxygen production decision support system of claim 4, wherein the abnormal warning message is a voice message or a text message. The oxygen production decision support system of claim 5, further comprising a user interface module for using the abnormality warning message, the instantaneous gas pressure value of the oxygen storage tank, and at least one of the at least one working machine The instantaneous oxygen usage and the predicted gas pressure value of the oxygen storage tank are displayed on a display. The oxygen production decision support system of claim 4, wherein the oxygen production condition further comprises a predetermined minimum oxygen emission amount of the oxygen storage tank. The oxygen production decision support system according to claim 1, wherein the oxygen production efficiency values in the equipment energy consumption database are represented by a single variable or a multivariate regression equation. The oxygen production decision support system according to claim 1, wherein the production mode uses the oxygen amount of the production schedule in the oxygen database as a regression equation of a single variable or a plurality of variables. The oxygen production decision support system of claim 1, wherein the information integration module utilizes a Domain Name System (DNS) or an instant database system to retrieve the at least one of the at least one work machine. Instant use of oxygen.