JP2009079072A - Mixture blending monitoring system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mixture blending monitoring system monitoring an addition state of an additive in quantitative addition and notifying abnormality to an operator when the addition of the additive is predicted not to be finished within a blending time. <P>SOLUTION: When a blending end scheduled time T2 of the additive exceeds an alarm display set time TM obtained by subtracting an alarm display set time m from a base material blending end estimated time T1, an alarm is displayed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a mixture monitoring system for a mixture of two or more components, for example, in the production of petroleum products and lubricating oils, by adding additives to petroleum product substrates and lubricating oil substrates, And an additive amount monitoring system for preparing additives.

  Conventionally, for example, petroleum products made of fuel oil such as LPG, gasoline, kerosene, and light oil, and lubricating oils such as engine oil and gear oil have been maintained in order to maintain their performance or improved. Therefore, petroleum products and lubricating oils are produced by adding various additives according to product specifications.

In this case, the additive added to the base material LPG includes, for example, an odorant and an anti-icing agent, and the additive added to the base material gasoline is: For example, there are antioxidants, metal deactivators, oxygen-containing compounds, colorants and the like.
Further, as an additive added to kerosene as a base material, for example, there is a light oil discriminating agent. As an additive added to light oil as a base material, for example, low temperature fluidity There are improvers and lubricity improvers.
Furthermore, examples of the additive added to the engine oil or gear oil as the base material include an antiwear agent, an extreme pressure additive, and a friction modifier.

  And when manufacturing petroleum products and lubricating oils, various additives such as those mentioned above, product standards, customer specifications, etc. Depending on the type, the type of additive, the amount added, the addition ratio, etc. are determined and added.

  By the way, in order to produce many kinds of petroleum products and lubricants, refineries have a large number of base tanks, additive tanks, and tanks for blending. Between these tanks, Connected by piping.

  For example, as shown in the blending facility 100 shown in FIG. 8, in a refinery, for example, a base material tank 102 in which a base material A for gasoline is accommodated and a base material B for light oil are accommodated. A substrate tank 104 is disposed.

  On the other hand, an additive tank 106 containing, for example, an additive C such as a colorant, which is added to the base material A for gasoline, and a base material B for light oil are added. An additive tank 108 in which an additive D such as an improving material is accommodated is disposed.

The base material tank 104 is connected to the blending tank 112 via the pipe 110. The pipe 110 is provided with a pump 114 and a flow meter 116, and is connected to the preparation tank 112 via the main pipe 120.
The substrate tank 102 is connected to the main pipe 120 via a pipe 118, and the pipe 118 is provided with a pump 122 and a flow meter 124.

Further, the additive tank 106 is connected to the main pipe 120 through a pipe 126, and the pipe 126 is provided with a pump 128 and a flow meter 130.
The additive tank 108 is connected to the main pipe 120 through a pipe 132, and the pipe 132 is provided with a pump 134 and a flow meter 136.

By the way, as a method of adding an additive to such a base material, there are so-called “quantitative addition” and “ratio addition”.
That is, as shown in FIG. 9, the ratio addition is performed by giving the flow control computer 150 the finished amount of products such as petroleum products and lubricants, and the ratio of base materials and additives such as petroleum products and lubricants. You are typing.

  Then, the flow rate data from the flow meters 116, 124, 130, and 136, the above-mentioned finished amount data, and the ratio data of the base material and the additive disposed in the respective pipes 110, 118, 126, and 132 are controlled by the flow rate. In this method, the computer 150 controls the flow control valves 138, 140, 142, and 144 by performing a comparison operation, thereby performing the blending operation.

  For example, when blending gasoline, the flow control valve 140 provided in the pipe 118 of the base material tank 102 is opened and the pump 122 is operated so that the base material for gasoline stored in the base material tank 102 is obtained. A is joined to the main pipe 120 via the pipe 118 and transferred to the mixing tank 112.

  On the other hand, the flow control valve 142 provided in the pipe 126 of the additive tank 106 is opened and the pump 128 is operated to add the additive C to the gasoline base material A stored in the additive tank 106. Are joined to the main pipe 120 via the pipe 126 and transferred to the mixing tank 112.

  Then, the flow rate data of the base material A for gasoline from the flow meter 124 provided in the piping 118 of the base material tank 102 and the flow rate of the additive C from the flow meter 130 provided in the piping 126 of the additive tank 106. The flow rate control computer 150 compares the data, the gasoline finish amount data, and the gasoline base material A / additive C ratio data.

  Based on the comparison calculation result, the flow control valve 140 provided in the pipe 118 of the base material tank 102 and the flow control valve 142 provided in the pipe 126 of the additive tank 106 are controlled to perform the blending operation. Is the method.

However, in this ratio addition, since the addition amount and the addition speed are controlled by a computer, there is no shortage of additive addition. However, in order to control the ratio of the base material and the additive, the flow control valves 138, 140, 142 are controlled. 144, since a ratio meter is required, there is a problem that the cost for the entire equipment investment is high.
Moreover, when the addition ratio of the additive is extremely small and the addition ratio is out of the applicable range of the equipment, the ratio addition cannot be performed, and the quantitative addition must be performed.

  On the other hand, as shown in FIG. 10, the quantitative addition is performed at any time during the transfer of the base material to the preparation tank (in FIG. 10, at the same time as the start of the transfer of the base material to the preparation tank). Is a method of adding a specified amount.

  This quantitative addition eliminates the need for flow control valves 138, 140, 142, 144 and a ratio meter as in the ratio addition described above, so existing equipment can be used as it is, and the overall capital investment compared to the ratio addition. There is an advantage that the cost can be reduced.

  In this case, the flow rate control of the additive is not performed at the flow rate control computer 150 such as the ratio addition, but is performed on site, and the addition amount displayed on the control screen of the computer in the instrument room (control room) is visually checked. The operator confirms the remaining quantity of the base material, the addition speed, and the data such as the remaining quantity of the additive and the addition speed, and the operator performs prediction monitoring.

As such quantitative addition, for example, as disclosed in Patent Document 1 (Japanese Patent Application Laid-Open No. 2004-277016), when filling fuel oil into a tank truck at an oil refinery or the like, fuel oil filling means and addition A prescribed amount of additive is added to the fuel oil by the agent addition means.
JP 2004-277016 A

  By the way, in the quantitative addition according to Patent Document 1 or the like, the addition amount displayed on the on-site computer control screen is visually confirmed, and the remaining quantity of the base material, the addition speed, the remaining quantity of the additive, the addition speed, etc. Since the operator performs predictive monitoring from the data, as shown in FIG. 11, the flow rate of the base material is increased, and the preparation is completed before the specified amount of additive is added, or the pipe is clogged. If the flow rate of the additive does not reach the set value due to a malfunction of the pump or the like, the additive may be insufficient.

  In view of the current situation, the present invention monitors the mixing time of a minor component of this mixture when preparing a mixture of two or more components, thereby preparing the minor component by the scheduled completion time of the mixture. It is an object of the present invention to provide a mixture monitoring system that can notify an operator of an abnormality when it is predicted that the process will not end.

  In addition, the present invention particularly monitors the addition status of the additive in quantitative addition, and prepares the mixture so that the operator can be notified of the abnormality when it is predicted that the addition of the additive will not be completed within the preparation time. The purpose is to provide a monitoring system.

The present invention has been invented in order to achieve the problems and objects in the prior art as described above, and the mixture monitoring system of the present invention comprises:
A mixture monitoring system for a mixture of two or more components,
It is characterized by monitoring the preparation time of the minor component.

  By configuring in this way, when preparing a mixture of two or more components, by monitoring the preparation time of the minor component of the mixture, the preparation of the minor component is completed by the scheduled preparation end time of the mixture. It can be notified to the operator.

  Therefore, the flow rate of other components reaches the set value when the flow rate of other components is increased and mixing is completed before adding the specified amount of minor components, or due to clogged piping or pump failure. In the case where it does not occur, the operator can be notified in advance, and the possibility of shortage of a small amount of components can be avoided.

Further, the mixture monitoring system of the mixture of the present invention,
The mixture preparation monitoring system is an additive addition amount monitoring system for preparing a base material and an additive by adding the additive to the base material,
The additive preparation time is monitored when the additive as the minor component is added to the substrate.

By comprising in this way, when adding an additive with respect to a base material, since the preparation time of the additive which is a small amount component is monitored, the preparation of the small amount component is completed by the scheduled preparation end time of the mixture. The operator can be notified whether or not to end.

  Therefore, when the flow rate of the base material is increased and the preparation is completed before the specified amount of the additive, which is a minor component, is added, or the additive is a minor component due to clogging of the piping or pump failure. The operator can be notified in advance when the flow rate of the gas does not reach the set value, and the possibility that the additive as a small amount of component is insufficient can be avoided in advance.

  Moreover, since it can be applied to quantitative addition, the flow control valve and the ratio meter are not required as in the above-described ratio addition, so existing equipment can be used as it is, and it is necessary to remodel the ratio control equipment. Therefore, it is possible to eliminate the need for new capital investment, and the cost for the total capital investment can be reduced compared with the ratio addition.

  In addition, the mixture monitoring system of the present invention, when preparing the base material and the additive, the additive preparation so that the preparation of the additive ends before the base material preparation end time T1. It is characterized in that the blending scheduled time T2 is set and the blending time of the additive is monitored.

  By constituting in this way, the flow rate of the base material becomes faster, and when adding a prescribed amount of additive which is a small amount of component, when preparation is completed, due to clogging of piping, pump failure, etc. When a case where the flow rate of the additive, which is a small component, does not reach the set value occurs, that is, when the scheduled finishing time T2 of the additive exceeds the scheduled finishing time T1 of the base material, the operator in advance The possibility that the additive, which is a small amount of component, is insufficient can be avoided in advance.

  Thereby, for example, when the base material and the additive are transferred and mixed in the same pipe, it is possible to prevent the additive from remaining in the pipe after the preparation is completed. For this reason, even when the same base material and an additive different from the additive used in the previous preparation are used for the next batch processing, mixing of the additive can be prevented and the additive remains in the pipe. The purging operation for removing the additive to be removed from the inside of the pipe is not necessary.

  The mixture monitoring system of the present invention monitors the additive preparation time based on the additive preparation end time T3 obtained by adding the allowance time X to the additive preparation scheduled time T2. It is characterized by.

  By constituting in this way, the flow rate of the base material becomes faster, and when adding a prescribed amount of additive which is a small amount of component, when preparation is completed, due to clogging of piping, pump failure, etc. When the flow rate of the additive, which is a small component, does not reach the set value, for example, when the additive preparation end time T3 exceeds the planned preparation end time T1 of the base material, the operator in advance The possibility that the additive, which is a small amount of component, is insufficient can be avoided in advance.

  Thereby, for example, when the base material and the additive are transferred and mixed in the same pipe, it is possible to prevent the additive from remaining in the pipe after the preparation is completed. For this reason, even when the same base material and an additive different from the additive used in the previous preparation are used for the next batch processing, mixing of the additive can be prevented and the additive remains in the pipe. The purging operation for removing the additive to be removed from the inside of the pipe is not necessary.

Moreover, in this case, since the additive preparation end time T3 is a time obtained by adding the allowance time X to the additive preparation end time T2, the error of the additive preparation end time T2 can be compensated. Therefore, it is possible to reliably prevent the possibility that the additive, which is a small component, is insufficient, and the possibility that the additive remains in the pipe after the preparation is completed.

  Further, the mixture monitoring system of the mixture of the present invention, when the additive preparation scheduled time T2 exceeds the warning display set time TM obtained by subtracting the warning display set time m from the base compound preparation end time T1, It is configured to display a warning.

  By constituting in this way, the flow rate of the base material becomes faster, and when adding a prescribed amount of additive which is a small amount of component, when preparation is completed, due to clogging of piping, pump failure, etc. When the flow rate of the additive, which is a minor component, does not reach the set value, that is, when the additive preparation scheduled time T2 exceeds the warning display set time TM, a warning is displayed to the operator in advance. The possibility that the additive which is a small amount of component is insufficient can be avoided in advance.

  Thereby, for example, when the base material and the additive are transferred and mixed in the same pipe, it is possible to prevent the additive from remaining in the pipe after the preparation is completed. For this reason, even when the same base material and an additive different from the additive used in the previous preparation are used for the next batch processing, mixing of the additive can be prevented and the additive remains in the pipe. The purging operation for removing the additive to be removed from the inside of the pipe is not necessary.

  Moreover, in this case, since the warning display set time TM is a time obtained by subtracting the warning display set time m from the base material preparation end time T1, an error in the base material preparation end time T1 can be compensated. Therefore, it is possible to reliably prevent the possibility that the additive, which is a small component, is insufficient, and the possibility that the additive remains in the pipe after the preparation is completed.

  In addition, the mixture preparation monitoring system of the present invention, when the additive preparation margin time T3 exceeds the warning display set time TM obtained by subtracting the warning display set time m from the base material preparation end time T1. The apparatus is configured to display a warning.

  By constituting in this way, the flow rate of the base material becomes faster, and when adding a prescribed amount of additive which is a small amount of component, when preparation is completed, due to clogging of piping, pump failure, etc. When the flow rate of the additive, which is a small component, does not reach the set value, that is, when the additive preparation end time T3 exceeds the warning display set time TM, a warning is displayed to the operator in advance. The possibility that the additive which is a small amount of component is insufficient can be avoided in advance.

  Thereby, for example, when the base material and the additive are transferred and mixed in the same pipe, it is possible to prevent the additive from remaining in the pipe after the preparation is completed. For this reason, even when the same base material and an additive different from the additive used in the previous preparation are used for the next batch processing, mixing of the additive can be prevented and the additive remains in the pipe. This eliminates the need for a purge operation for removing the additive to be removed from the pipe.

  Moreover, in this case, the additive preparation end time T3 is a time obtained by adding the allowance time X to the additive preparation end time T2, and the warning display set time TM is the base material preparation end time T1. Since it is the time obtained by subtracting the warning display setting time m from the error, it is possible to compensate for the error of the additive preparation scheduled time T2 and the error of the base material preparation completion time T1, so that the additive as a minor component is added. It is possible to more reliably prevent the possibility of the shortage and the possibility of the additive remaining in the pipe after the preparation is completed.

In the mixture monitoring system of the present invention, the warning display is an alarm.
With this configuration, when the additive preparation scheduled time T2 or additive preparation allowance time T3 exceeds the warning display set time TM, it is reliably notified to the operator by an alarm. be able to.

The mixture monitoring system according to the present invention is characterized in that the mixture prepared by adding an additive to a base material is a petroleum product.
By comprising in this way, petroleum products which consist of fuel oils, such as LPG, gasoline, kerosene, light oil, etc. with high performance and reliability, for example can be prepared.

Further, the mixture monitoring system according to the present invention is characterized in that the mixture prepared by adding an additive to a base material is a lubricating oil.
By comprising in this way, lubricating oil, such as engine oil and gear oil with high performance and reliability, for example, can be prepared.

In addition, the mixture monitoring system according to the present invention is configured to transfer and mix the mixture of two or more components into the same pipe.
By configuring in this way, when preparing a mixture of two or more components by quantitative addition, by monitoring the preparation time of the minor component of this mixture, the minor component of The operator can be notified whether or not the blending is complete.

  Therefore, the flow rate of other components reaches the set value when the flow rate of other components is increased and mixing is completed before adding the specified amount of minor components, or due to clogged piping or pump failure. In the case where it does not occur, the operator can be notified in advance, and the possibility of shortage of a small amount of components can be avoided.

  Moreover, since it can be applied to quantitative addition, the flow control valve and the ratio meter are not required as in the above-described ratio addition, so existing equipment can be used as it is, and it is necessary to remodel the ratio control equipment. Therefore, it is possible to eliminate the need for new capital investment, and the cost for the total capital investment can be reduced as compared with the ratio addition.

  Furthermore, when transferring and mixing in the same piping, it can prevent that a small amount component remains in piping after mixing is complete | finished. For this reason, when mixing a mixture of two or more different components by quantitative addition, when mixing in the next batch processing, it is possible to prevent a small amount of components from being mixed and a small amount of components remaining in the piping to be piped. The purging operation to remove from the inside becomes unnecessary.

  According to the present invention, when preparing a mixture of two or more components, by monitoring the preparation time of the minor component of the mixture, whether or not the preparation of the minor component is completed by the scheduled completion time of the mixture. This can be notified to the operator.

  Therefore, the flow rate of other components reaches the set value because the flow rate of other components becomes faster and the preparation is completed before the specified amount of minor components is added, or due to clogged piping or pump failure. In the case where it does not occur, the operator can be notified in advance, and the possibility of shortage of a small amount of components can be avoided.

  In addition, according to the present invention, when the additive is added to the base material, the preparation time of the additive which is a minor component is monitored, so that the minor component can be prepared by the scheduled preparation end time of the mixture. The operator can be notified whether or not to end.

  Therefore, when the flow rate of the base material is increased and the preparation is completed before the specified amount of the additive, which is a minor component, is added, or the additive is a minor component due to clogging of the piping or pump failure. The operator can be notified in advance when the flow rate of the gas does not reach the set value, and the possibility that the additive as a small amount of component is insufficient can be avoided in advance.

  Moreover, since it can be applied to quantitative addition, the flow control valve and the ratio meter are not required as in the above-described ratio addition, so existing equipment can be used as it is, and it is necessary to remodel the ratio control equipment. Therefore, it is possible to eliminate the need for new capital investment, and the cost for the total capital investment can be reduced compared with the ratio addition.

  Furthermore, the additive does not remain in the main pipe, and a purge operation for removing the additive from the main pipe can be made unnecessary.

  Hereinafter, embodiments (examples) of the present invention will be described in more detail with reference to the drawings.

  FIG. 1 is a schematic view showing a mixture preparation facility to which the mixture preparation system of the present invention is applied, FIG. 2 is a schematic view illustrating an embodiment of the mixture preparation system of the present invention, and FIG. FIG. 4 is a flow chart showing the operation of the embodiment of the mixture preparation system of the present invention.

  In FIG. 1, the code | symbol 10 has shown the mixture preparation equipment which applies the mixture preparation system of this invention in total.

  As shown in FIG. 1, in the refinery, the blending facility 10 includes, for example, a base material tank 12 in which a base material A for gasoline is accommodated and a base material in which a base material B for light oil is accommodated. A tank 14 is arranged.

  On the other hand, added to the base material A for gasoline, for example, an additive tank 16 containing an additive C such as a colorant, and added to the base material B for light oil, for example, improved low-temperature fluidity An additive tank 18 in which an additive D such as a material is accommodated is disposed.

  The base material tank 14 is connected to the preparation tank 22 via the pipe 20. The pipe 20 is provided with a pump 24 and a flow meter 26, and is connected to the preparation tank 22 via the main pipe 30.

The base material tank 12 is connected to the main pipe 30 via a pipe 28, and the pipe 28 is provided with a pump 32 and a flow meter 34.
Further, the additive tank 16 is connected to the main pipe 30 via a pipe 36, and the pipe 36 is provided with a pump 38 and a flow meter 40.

The additive tank 18 is connected to the main pipe 30 through a pipe 42, and the pipe 42 is provided with a pump 44 and a flow meter 46.
For example, when blending gasoline, a valve (not shown) provided in the pipe 28 of the base material tank 12 in which the base material A for gasoline is accommodated is opened and the pump 32 is operated. The base material A for gasoline stored in the base material tank 12 is joined to the main pipe 30 via the pipe 28 and transferred to the mixing tank 22.

  On the other hand, the valve (not shown) provided in the pipe 36 of the additive tank 16 containing the additive C to be added to the gasoline base material A is opened, and the pump 38 is operated to add the additive tank. The additive C added to the gasoline base material A accommodated in 16 is joined to the main pipe 30 via the pipe 36 and transferred to the blending tank 22.

As a result, the base material A and additive C for gasoline are transferred and mixed in the main pipe 30 and stored in the mixing tank 22.
At this time, a valve (not shown) provided in the pipe 20 of the base tank 14 in which the base B for light oil is accommodated, and an additive D added to the base B for light oil. The valve (not shown) provided in the pipe 42 of the additive tank 18 in which is stored is closed, and the pump 24 of the pipe 20 and the pump 44 of the pipe 42 are stopped.

  On the other hand, for example, when preparing light oil, a valve (not shown) provided in the pipe 20 of the base material tank 14 in which the base material B for light oil is accommodated is opened and the pump 24 is operated. The base material B for light oil accommodated in the base material tank 14 is joined to the main pipe 30 via the pipe 20 and transferred to the mixing tank 22.

  On the other hand, the valve (not shown) provided in the pipe 42 of the additive tank 18 containing the additive D added to the base material B for light oil is opened, and the pump 44 is operated to add the additive tank. The additive D added to the light oil base material B accommodated in 18 is joined to the main pipe 30 via the pipe 42 and transferred to the blending tank 22.

As a result, the base material B and additive D for light oil are transferred and mixed in the main pipe 30 and stored in the mixing tank 22.
At this time, a valve (not shown) provided in the pipe 28 of the base material tank 12 in which the gasoline base material A is accommodated, and an additive C added to the gasoline base material A The valve (not shown) provided in the pipe 36 of the additive tank 16 in which is stored is closed, and the pump 32 of the pipe 28 and the pump 38 of the pipe 36 are stopped.

  Next, the mixture preparation system of the present invention applied to the mixture preparation equipment 10 configured as described above will be described.

  In the blend preparation system of the present invention of this example, when the additive preparation margin time T3 exceeds the warning display set time TM obtained by subtracting the warning display set time m from the base material preparation end time T1. , Configured to display warnings

  That is, as shown in step S1 of the flowchart of FIG. 4, the transfer of the base material and the additive is started.

  That is, as shown in FIG. 1, for example, when blending gasoline, a valve (not shown) provided in the pipe 28 of the base material tank 12 in which the base material A for gasoline is accommodated is opened. At the same time, the pump 32 is operated to join the gasoline base material A accommodated in the base material tank 12 to the main pipe 30 via the pipe 28 and start the transfer to the preparation tank 22.

  A valve (not shown) provided in the pipe 36 of the additive tank 16 that contains the additive C added to the gasoline base A at the same time as the transfer of the gasoline base A is started. The pump 38 is operated and the additive C added to the gasoline base material A accommodated in the additive tank 16 is joined to the main pipe 30 via the pipe 36 to prepare the mixing tank. The transfer to 22 is started.

  In this state, as shown in step S2 of the flowchart of FIG. 4 and FIG. 3, data of the flow meter arranged at the site, that is, the piping 28 of the base material tank 12 in which the base material A for gasoline is accommodated. The flow rate data of the flow meter 34 provided in the pipe 36 of the additive tank 16 that contains the flow rate data of the flow meter 34 provided in the vehicle and the additive C added to the base material A for gasoline are stored on site. It is inputted to the device dedicated input / output device 50 arranged.

Further, as shown in step S3 and FIG. 3 in the flowchart of FIG. 4, the flow rate data from the device dedicated input / output device 50 is changed to a flow rate pulse signal (for example, 1 ml / 1 pulse) is input to a DCS (Distribution Control System) device 52 and data is collected.

  In this DCS device 52, the flow rate pulse is used as a counter and is automatically added to use as a counter of the flow meter. And, when the counter of the flow meter reaches a predetermined quantity, it is configured to automatically instruct the device dedicated input / output device 50 to stop the pump and close the valve.

  Then, as shown in step S4 of the flowchart of FIG. 4 and FIG. 3, the flow rate pulse data accumulated in the DCS device 52 is input to the process computer 54 every predetermined time, for example, every minute, Data is collected.

  In the process computer 54, when the transfer amount is stabilized after a predetermined time has elapsed (for example, when the transfer of 5 kl is completed), the following calculation is performed at predetermined time intervals, for example, at intervals of 5 minutes. It is like that.

That is, as shown in step S5 of the flowchart of FIG. 4 and FIG. 2, the flow velocity (minute speed) V of the base material A is calculated from the following equation using the flow meter counter from the flow meter 34 of the base material A. It comes to calculate.
V = (current transfer amount−transfer amount before 5 minutes) / (current time−update time before 5 minutes)
In this case, V may be used as it is. However, for example, when the fluctuation of the difference in a short time is large due to the characteristics of the pump or the like, the moving average value of V, for example, the moving average of V for 5 minutes. A value may be used.

Also, as shown in step S6 of the flowchart of FIG. 4 and FIG.
The blending completion scheduled time T1 of the base material A is calculated from the following formula.
T1 = current time + (base material preparation amount−current base material preparation amount) / base material flow velocity V

Moreover, as shown in step S7 of the flowchart of FIG. 4 and FIG. 2, the warning display setting time TM obtained by subtracting the warning display setting time m from the blending completion scheduled time T1 of the base material A is expressed by the following equation: It comes to calculate.
TM = Substrate completion schedule of base material T1-Warning display setting time m

In this case, the warning display set time m purges the amount of oil remaining in the main pipe 30 from the position where it joins the pipe 36 to the mixing tank 22 so that the additive C does not remain in the main pipe 30 at the end of the mixing. Set more than the time required to do.
In this embodiment, the warning display set time m is set to 5 minutes, for example, and can be changed for each base material and additive.

Furthermore, as shown in step S8 of the flowchart of FIG. 4 and FIG. 2, the flow rate (minute speed) v of the additive C is calculated from the following equation using the flow meter counter from the flow meter 40 of the additive C. It comes to calculate.
v = (current addition amount−addition amount before 5 minutes) / (current time−update time before 5 minutes) Note that in this case, v may be used as it is. If the variation in the time difference is large, a moving average value of v, for example, a moving average value of v for 5 minutes may be used.

Further, as shown in step S9 of the flowchart of FIG. 4 and FIG.
The preparation completion time T2 of the additive C is calculated from the following formula.
T2 = current time + (scheduled addition amount−current amount) / addition flow velocity v

Also, as shown in step S10 of the flowchart of FIG. 4 and FIG. 2, the additive preparation end margin time T3 is calculated by adding the allowance time X to the additive preparation scheduled end time T2. .
T3 = Additive preparation end time T2 + addition time X

In this case, the margin time X is set based on the record of fluctuation of the additive flow rate.
In this embodiment, the margin time X is set to 5 minutes, for example, and can be changed for each base material and additive.

Then, as shown in step S11 and FIG. 2 of the flowchart of FIG. 4, the warning display setting time obtained by subtracting the warning display setting time m from the base material preparation completion time T1 is the additive preparation completion time T3. Whether to exceed TM, ie
Additive preparation end time T3> warning display set time TM
It is determined whether or not.

When the additive preparation end time T3 exceeds the warning display set time TM, that is,
Additive preparation end time T3> warning display set time TM
In such a case, as shown in step S12 of the flowchart of FIG. 4, for example, an alarm is issued and a warning display such as a message is displayed.

On the other hand, in step S11, when the additive preparation end time T3 does not exceed the warning display set time TM, that is,
Additive preparation end time T3 <warning display set time TM
If it is, steps S5 to S11 are repeated at regular intervals.

  Then, in step S12 of the flowchart of FIG. 4, once the warning is displayed, steps S5 to S11 are repeated.

  In this case, in step S11, when the additive preparation margin time T3 exceeds the warning display setting time TM, the warning display is set not to be performed again after the warning display is performed once.

Of course, it is also possible to set so that the warning display is continued.
Further, as shown in step S13, steps S5 to S11 are repeated. In step S11, when the additive preparation end time T3 does not exceed the warning display set time TM, that is,
Additive preparation end time T3 <warning display set time TM
In such a case, as shown in step S14 of the flowchart of FIG. 4, for example, a recovery chime notification or a recovery message is displayed.

Specifically, for example, if the current time is 13:00, the base material preparation amount is 60 kl, the current base material preparation amount is 40 kl, and the base material flow rate V is 10 kl / h,
The planned completion time T1 of the base material is:
T1 = 13 o'clock + (60 kl−40 kl) / 10 kl / h
Is calculated and becomes 15:00.

In this case, the warning display set time TM is set to 5 minutes as the warning display set time m.
TM = 15 hours minus 5 minutes and 14:55.

Further, the scheduled end time T2 of the additive preparation is 5 o'clock when the pre-determined additive addition amount is 5 l, the current additive addition amount is 3.5 l, and the additive flow rate V is 1 l / h. ,
T2 = 13: 00+ (5l-3.5l) / 1l / h
Is calculated to be 14:30.

Also, if the margin time X is 5 minutes, the additive preparation margin time T3 is
It is calculated as T3 = 14: 30 + 5 minutes and becomes 14:35.

  In this case, since the additive preparation margin time T3 (14:35) does not exceed the warning display set time TM (14:55), no alarm is issued in this case.

On the other hand, assuming that the current additive scheduled addition amount is 7 l, the current additive addition amount is 5 l, and the additive flow rate is 1 l / h, the current time is 13:00,
T2 = 13: 00+ (7l-5l) / 1l / h
Is calculated and becomes 15:00.

Also, if the margin time X is 5 minutes, the additive preparation margin time T3 is
It is calculated as T3 = 15 o'clock + 5 minutes and becomes 15: 5.

  In this case, the additive preparation end time T3 (15: 5) exceeds the warning display set time TM (14:55). In this case, an alarm is issued.

  In the above embodiment, for example, the case of blending gasoline has been described. However, the same can be applied to the case of blending light oil.

  Further, in this embodiment, as shown in step S1 of the flowchart of FIG. 4, the transfer of the base material and the additive is started at the same time, but it is of course possible to delay the transfer of the additive from the transfer of the base material. is there.

  By constituting in this way, the flow rate of the base material becomes faster, and when adding a prescribed amount of additive which is a small amount of component, when preparation is completed, due to clogging of piping, pump failure, etc. When the flow rate of the additive, which is a small component, does not reach the set value, that is, when the additive preparation end time T3 exceeds the warning display set time TM, a warning is displayed to the operator in advance. The possibility that the additive which is a small amount of component is insufficient can be avoided in advance.

Thereby, for example, when the base material and the additive are transferred and mixed in the same pipe, it is possible to prevent the additive from remaining in the pipe after the preparation is completed. For this reason, even when the same base material and an additive different from the additive used in the previous preparation are used for the next batch processing, mixing of the additive can be prevented and the additive remains in the pipe. The purging operation for removing the additive to be removed from the inside of the pipe is not necessary.

  Moreover, in this case, the additive preparation end time T3 is a time obtained by adding the allowance time X to the additive preparation end time T2, and the warning display set time TM is the base material preparation end time T1. Since it is the time obtained by subtracting the warning display setting time m from the error, it is possible to compensate for the error of the additive preparation scheduled time T2 and the error of the base material preparation completion time T1, so that the additive as a minor component is added. It is possible to reliably prevent the possibility of the shortage and the possibility of the additive remaining in the pipe after the preparation is completed.

  FIG. 5 is a schematic view similar to FIG. 2 of another embodiment of the blend preparation system of the present invention.

  The blending system of this embodiment has basically the same configuration as shown in FIG. 2, and the same components are denoted by the same reference numerals and detailed description thereof is omitted.

In the blend preparation system of the present invention, as shown in FIG. 5, the additive preparation scheduled time T2 is set so that the additive preparation is completed before the base preparation completion time T1 of the base material. Set and monitor additive preparation time.
In this case, unlike the above embodiment, the warning display set time TM is set according to the following equation because there is no warning display set time m.
Warning display set time TM = Formation end scheduled time T1

In other words, when the warning display set time TM exceeds the base material preparation end scheduled time T1, that is,
Additive preparation end time T2> Warning display set time TM
In this case, as shown in step S12 of the flowchart of FIG. 4, for example, alarms are issued and warnings such as messages are displayed.

  By constituting in this way, the flow rate of the base material becomes faster, and when adding a prescribed amount of additive which is a small amount of component, when preparation is completed, due to clogging of piping, pump failure, etc. When a case where the flow rate of the additive, which is a small component, does not reach the set value occurs, that is, when the scheduled finishing time T2 of the additive exceeds the scheduled finishing time T1 of the base material, the operator in advance The possibility that the additive, which is a small amount of component, is insufficient can be avoided in advance.

  Thereby, for example, when the base material and the additive are transferred and mixed in the same pipe, it is possible to prevent the additive from remaining in the pipe after the preparation is completed. Therefore, even when the same base material and an additive different from the additive used in the previous preparation are used for the next batch processing, the purging operation for removing the additive remaining in the pipe from the pipe is not performed. It becomes unnecessary.

  FIG. 6 is a schematic view similar to FIG. 2 of another embodiment of the blend preparation system of the present invention.

  This embodiment blending system has basically the same configuration as that shown in FIG. 2, and the same reference numerals are given to the same components and the detailed description thereof is omitted.

In the mixture preparation system of the present invention, as shown in FIG. 6, the additive preparation is based on the additive preparation end time T3 obtained by adding the allowance time X to the additive preparation scheduled time T2. It is to monitor time.
In this case, unlike the above embodiment, the warning display set time TM is set according to the following equation because there is no warning display set time m.
Warning display set time TM = Formation end scheduled time T1

In other words, when the additive preparation margin time T3 exceeds the warning display set time TM, that is,
Additive preparation end time T3> warning display set time TM
In this case, as shown in step S12 of the flowchart of FIG. 4, for example, alarms are issued and warnings such as messages are displayed.

  By constituting in this way, the flow rate of the base material becomes faster, and when adding a prescribed amount of additive which is a small amount of component, when preparation is completed, due to clogging of piping, pump failure, etc. When the flow rate of the additive, which is a small component, does not reach the set value, for example, when the additive preparation end time T3 exceeds the planned preparation end time T1 of the base material, the operator in advance The possibility that the additive, which is a small amount of component, is insufficient can be avoided in advance.

  Thereby, for example, when the base material and the additive are transferred and mixed in the same pipe, it is possible to prevent the additive from remaining in the pipe after the preparation is completed. For this reason, even when the same base material and an additive different from the additive used in the previous preparation are used for the next batch processing, mixing of the additive can be prevented and the additive remains in the pipe. This eliminates the need for a purge operation for removing the additive to be removed from the pipe.

  Moreover, in this case, since the additive preparation end time T3 is a time obtained by adding the allowance time X to the additive preparation end time T2, the error of the additive preparation end time T2 can be compensated. Therefore, it is possible to reliably prevent the possibility that the additive, which is a small component, is insufficient, and the possibility that the additive remains in the pipe after the preparation is completed.

  FIG. 7 is a schematic view similar to FIG. 2 of another embodiment of the blend preparation system of the present invention.

  The blending system of this embodiment has basically the same configuration as shown in FIG. 2, and the same components are denoted by the same reference numerals and detailed description thereof is omitted.

  In the mixture preparation system of the present invention, as shown in FIG. 7, the warning preparation set time T2 is obtained by subtracting the warning display setting time m from the preparation completion time T1 of the base material. When the value exceeds TM, a warning is displayed.

In other words, if the additive preparation scheduled time T2 exceeds the warning display set time TM, that is,
Additive preparation end time T3> warning display set time TM
In this case, as shown in step S12 of the flowchart of FIG. 4, for example, alarms are issued and warnings such as messages are displayed.

  By constituting in this way, the flow rate of the base material becomes faster, and when adding a prescribed amount of additive which is a small amount of component, when preparation is completed, due to clogging of piping, pump failure, etc. When the flow rate of the additive, which is a minor component, does not reach the set value, that is, when the additive preparation scheduled time T2 exceeds the warning display set time TM, a warning is displayed to the operator in advance. The possibility that the additive which is a small amount of component is insufficient can be avoided in advance.

  Thereby, for example, when the base material and the additive are transferred and mixed in the same pipe, it is possible to prevent the additive from remaining in the pipe after the preparation is completed. For this reason, even when the same base material and an additive different from the additive used in the previous preparation are used for the next batch processing, mixing of the additive can be prevented and the additive remains in the pipe. The purging operation for removing the additive to be removed from the inside of the pipe is not necessary.

  Moreover, in this case, since the warning display set time TM is a time obtained by subtracting the warning display set time m from the base material preparation end time T1, an error in the base material preparation end time T1 can be compensated. Therefore, it is possible to reliably prevent the possibility that the additive, which is a small component, is insufficient, and the possibility that the additive remains in the pipe after the preparation is completed.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to this. For example, in the above embodiment, gasoline, which is a fuel oil, as a mixture in which an additive is mixed with a base material, Although the case of light oil has been described as an example, the present invention is not limited thereto, and may be, for example, petroleum products such as LPG and kerosene, lubricating oil such as engine oil and gear oil, and may be concrete. .

Moreover, in the said Example, although the base material was 1 type and the additive added to a base material was 1 type, this invention is not limited to this, Each may be 2 or more types.
In addition, when n types of base materials (n is an integer of 2 or more) are used, it is only necessary to calculate the scheduled preparation end time of each base material, and use the latest planned preparation end time among them as the planned preparation end time T1.

  Furthermore, in the said Example, although the case where it mixes by adding an additive to a base material was demonstrated, when preparing the mixture of two or more components, by monitoring the preparation time of a small amount component among this mixture, Various modifications can be made without departing from the object of the present invention, such as notifying the operator of whether or not the preparation of the minor component is completed by the scheduled completion time of the mixture. .

FIG. 1 is a schematic view showing a mixture preparation facility to which the mixture preparation system of the present invention is applied. FIG. 2 is a schematic diagram illustrating an embodiment of the blend preparation system of the present invention. FIG. 3 is a schematic configuration diagram of an embodiment of the mixture preparation system of the present invention. FIG. 4 is a flowchart showing the operation of the embodiment of the mixture preparation system of the present invention. FIG. 5 is a schematic view similar to FIG. 2 of another embodiment of the blend preparation system of the present invention. FIG. 6 is a schematic view similar to FIG. 2 of another embodiment of the blend preparation system of the present invention. FIG. 7 is a schematic view similar to FIG. 2 of another embodiment of the blend preparation system of the present invention. FIG. 8 is a schematic view showing a mixture preparation facility in a refinery. FIG. 9 is a schematic view showing a conventional mixing equipment for ratio addition of a mixture. FIG. 10 is a schematic view illustrating conventional quantitative addition of a mixture. FIG. 11 is a schematic view illustrating conventional quantitative addition of a mixture.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Preparation equipment 12 Base material tank 14 Base material tank 16 Additive tank 18 Additive tank 20 Pipe 22 Preparation tank 24 Pump 26 Flow meter 28 Pipe 30 Main pipe 32 Pump 34 Flow meter 36 Pipe 38 Pump 40 Flow meter 42 Pipe 44 Pump 46 Flow meter 50 Equipment dedicated input / output device 52 DCS device 54 Process computer 100 Mixing equipment 102 Base tank 104 Base tank 106 Additive tank 108 Additive tank 110 Pipe 112 Preparation tank 114 Pump 116 Flow meter 118 Pipe 120 Main Piping 122 Pump 124 Flow meter 126 Piping 128 Pump 130 Flow meter 132 Piping 134 Pump 136 Flow meter 138 Flow control valve 140 Flow control valve 142 Flow control valve 144 Flow control Rubarubu 150 flow control computer

Claims (10)

A mixture monitoring system for a mixture of two or more components,
A mixture monitoring system for monitoring a mixing time of a small component. The mixture preparation monitoring system is an additive addition amount monitoring system for preparing a base material and an additive by adding the additive to the base material,
2. The mixture preparation monitoring system according to claim 1, wherein the additive preparation time is monitored when the additive as the minor component is added to the base material. 3.   When preparing the base material and the additive, the additive preparation scheduled end time T2 is set so that the preparation of the additive ends before the base material preparation end time T1, and the additive is added. The mixture preparation monitoring system according to claim 2, wherein the preparation time of the mixture is monitored.   The additive preparation time is monitored based on an additive preparation end time T3 obtained by adding a margin time X to the additive preparation scheduled end time T2. Formulation monitoring system.   When the additive preparation completion time T2 exceeds the warning display setting time TM obtained by subtracting the warning display setting time m from the base material preparation completion time T1, the warning display is performed. The mixture monitoring system for a mixture according to claim 3.   When the additive preparation margin time T3 exceeds the warning display setting time TM obtained by subtracting the warning display setting time m from the base material preparation completion time T1, the warning display is performed. The mixture monitoring system for a mixture according to claim 4.   The mixture monitoring system according to claim 5 or 6, wherein the warning display is an alarm.   The mixture preparation monitoring system according to any one of claims 2 to 7, wherein the mixture prepared by adding an additive to the base material is a petroleum product.   The mixture preparation monitoring system according to any one of claims 2 to 7, wherein the mixture prepared by adding an additive to the base material is a lubricating oil.   The mixture monitoring system for a mixture according to any one of claims 1 to 9, wherein the mixture of two or more components is configured to be transferred and mixed in the same pipe.

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