CN101219324A - Control method, control apparatus, program, and recording medium in gas separating apparatus - Google Patents
Control method, control apparatus, program, and recording medium in gas separating apparatus Download PDFInfo
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- CN101219324A CN101219324A CNA2007101517462A CN200710151746A CN101219324A CN 101219324 A CN101219324 A CN 101219324A CN A2007101517462 A CNA2007101517462 A CN A2007101517462A CN 200710151746 A CN200710151746 A CN 200710151746A CN 101219324 A CN101219324 A CN 101219324A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0454—Controlling adsorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40007—Controlling pressure or temperature swing adsorption
Abstract
The control method for a gas separation unit of the invention is provided to separate the easy adsorption components and the hard adsorption components in the raw gases and to prepare produce gas by repeatedly carrying out a adsorption process, a uniform compression process and a regeneration process to a plurality of adsorption towers filled with adsorbent. A stop process is set after the adsorption process and the regeneration process, while the time of the stop process is changed by a change predict of the produce can.
Description
Technical field
The present invention relates to control method, control device, program and recording medium in the gas fractionation unit.
The application advocates that on September 29th, 2006, the spy in Japanese publication was willing to 2006-266461 number priority, quotes its content here.
Background technology
In the past, as the method for isolating a kind of gas of regulation from the mist of multiple gases composition, PSA (transformation absorption) method, TSA (alternating temperature absorption) method, other PTSA (transformation and the alternating temperature absorption) method that has made up PSA and TSA in addition by temperature difference, pressure differential divided gas flow are arranged.Also have film by adsorbed gas to filter the membrane separation process etc. of divided gas flow in addition.
For example, in the PSA mode as gas separation method by pressure swing adsorption, to the adsorption tower base feed mist that carries out absorption process and step for regeneration repeatedly, make the easy adsorption component of various adsorbents adsorb of filling in this adsorption tower, thus easy adsorption component in the separate raw materials mist and difficult adsorption component.For example, when using molecular-sieve carbon as adsorbent, can make nitrogen (also comprising the concentrated nitrogen higher than the nitrogen concentration of air: descend together) by air, this PSA nitrogen-making device is widely used in reality.
Yet the PSA nitrogen-making device is designed to be made as, and satisfies purity (specification purity), pressure (specification pressure) and the use traffic (specification flow) of the desirable goods nitrogen of user (user, needs person) of goods nitrogen.
Usually in the running, this PSA nitrogen-making device of running (running usually, 100% running) is to satisfy each specification value.But, in the real-world operation situation, because user side's situation even satisfied the purity of goods gases and the specification value of pressure, the situation of the taking-up flow (goods taking-up flow) of goods gas than the specification value minimizing still can occur.
, when the activity time of PSA device was identical even goods take out the flow minimizing, the minimizing ratio of consumption rate was also taken out the minimizing ratio of flow less than goods, so the ratio of the taking-up amount of the relative goods of power consumption increases.
To this, exist corresponding goods to take out the minimizing of flow and cut down the prior art of consumption rate.Method shown in patent documentation 1: use the contravariant compressor, according to the setting value of the outlet oxygen concentration of adsorption tower the switching cycle of adsorption tower is changed automatically, thereby prolong the reduction that adsorption time is realized power consumption.In addition, also just like the method shown in the patent documentation 2: be provided with and end operation and take out Flow-rate adjustment termination activity time according to goods.
[patent documentation 1] spy opens the 2005-270953 communique
[patent documentation 2] spy opens the 2003-88721 communique
, in the method for patent documentation 1 as implied above, use expensive contravariant compressor, be difficult to realize cheap.In addition, in the method shown in the patent documentation 2, though do not use the contravariant compressor can realize yet, when having changed the conditions such as discharge-amount of goods pressure specification value, the capacity that is used for the goods groove of storage articles gas, goods purity, attached compressor, need a lot of setting values of change.And then have following problem: because each setting value is carried out correspondingly with user's desired specifications condition, the experiment of turning round is obtained optimum setting value with experiment, so be difficult to determine to set value shortage adaptability.
In addition, when the running of ending operation is not set, from compressor the inlet pressure of PSA device is reached upper limit pressure in the absorption process, then compressor is automatically transferred to no-load running.But behind the no-load running, owing to can reduce at once the inlet pressure of PSA device, high frequent ground carries out load running and no-load running alternately repeatedly.Concerning compressor, carry out load running and no-load running continually repeatedly, can improve frame for movement load compressor, therefore aging in advance easily.In addition, in compressor, when switching to no-load running, the power consumption of compressor can slowly descend after just having begun from no-load running, but can not cut down power consumption when frequent switchable load running and no-load running.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of control system of gas fractionation unit, by the termination operation being set according to the pressure in the gas fractionation unit, address the above problem, when the taking-up flow-rate ratio specification value of goods gas reduces, satisfy the goods gas purity and the pressure of customer requirements, and can be really and adapt to the reduction of power consumption effectively, in addition, compressor steady running.
In order to achieve the above object, the control method of gas fractionation unit of the present invention, it is characterized in that, a plurality of adsorption towers of having filled adsorbent are carried out these 3 operations of absorption process, pressure process and step for regeneration at least respectively repeatedly, thereby the easy adsorption component in the separate raw materials mist (for example, oxygen in the embodiment) and difficult adsorption component (for example, the nitrogen in the embodiment) and make goods gas; When after absorption process and step for regeneration end, the termination operation being set, change the time of described termination operation according to the change prediction of goods jar.
The control method of gas fractionation unit of the present invention, it is characterized in that, a plurality of adsorption towers of having filled adsorbent are carried out these 3 operations of absorption process, pressure process and step for regeneration at least respectively repeatedly, thus easy adsorption component in the separate raw materials mist and difficult adsorption component and make goods gas; This method has: storage is in advance by the process of the function model (for example, the Mathematical Modeling in the embodiment) of the force value of the goods jar experiment value identification, that gas fractionation unit had; Storage representation is from the flow information (for example, the gas taking-up amount in the embodiment) of the use amount of the gas of gas fractionation unit input, force value in the goods jar and the process of timing (timer) information (for example, the valve open and-shut mode information in the embodiment); Read function model, the function model that the described flow information read and force value, clocking information input are read, thereby calculate the pressure prediction value of goods jar, according to the pressure prediction value, regulate and calculate the zero hour of termination operation in the gas fractionation unit, that after absorption process and step for regeneration end, be provided with and the process of the finish time (for example, the zero hour of the absorption process in the embodiment); According to the process of described 3 operations, the zero hour of ending operation and the finish time controlling gas fractionation unit.
Control device of the present invention, it is characterized in that, it is that a plurality of adsorption towers of having filled adsorbent are carried out these 3 operations of absorption process, pressure process and step for regeneration at least respectively repeatedly, thus easy adsorption component in the separate raw materials mist and difficult adsorption component and make the control device of the gas fractionation unit of goods gas; This device has: function model storage part (for example, the specification value in the embodiment is accumulated portion 18), storage are in advance by the function model of the force value of the goods jar experiment value identification, that gas fractionation unit had; Input value information memory cell (for example, the input value information in the embodiment is accumulated portion 15), storage representation is from the flow information of the use amount of the gas of gas fractionation unit input, force value and the clocking information in the goods jar; The meter calculating part, read function model from the function model storage part, the function model that the flow information that will read from the input value information memory cell and force value, clocking information input are read, thereby calculate the pressure prediction value of goods jar, according to the pressure prediction value, regulate and calculate in the gas fractionation unit, absorption process and step for regeneration finish the zero hour and the finish time of the termination operation that the back is provided with; Control part (for example, the gas fractionation unit control part 11 in the embodiment) is according to controlling described 3 operations, the zero hour of ending operation and the finish time gas fractionation unit.
In addition, the cycle of the every regulation of the preferred calculating part of the present invention is calculated the pressure prediction value of goods pressure tank, the pressure prediction value of relatively calculating and the upper limit set value of goods pressure tank are (for example, upper limit force value in the embodiment), thereby whether the detected pressures predicted value surpasses the upper limit set, with the finish time of calculating absorption process or the continuation time (for example, the activity time in the embodiment) of absorption process.
In addition, the cycle of the every regulation of the preferred calculating part of the present invention is calculated the pressure prediction value of goods pressure tank, the pressure prediction value of relatively calculating and the lower limit set value of goods pressure tank are (for example, threshold pression value in the embodiment), thereby whether the detected pressures predicted value is lower than lower limit set, to calculate the finish time of ending operation or the continuation time of ending operation.
In addition, the preferred calculating part of the present invention is calculated the poor of minimum and lower limit set value among the measured value of the goods pressure tank of importing from the goods jar, regulates lower limit set value when this difference surpasses the threshold value of stipulating.
In addition, the preferred calculating part of the present invention is regulated lower limit set value according to the measured value of the goods gas concentration from the goods jar of gas fractionation unit input.
In addition, the preferred calculating part of the present invention is regulated lower limit set value according to the flow information of the goods gas of importing from gas fractionation unit.
Program of the present invention is the functional programs that is used to make above-mentioned control device performance information processor.
But recording medium of the present invention is to have write down the recording medium that the computer of said procedure reads.
As described above, according to the present invention, even the utilization of gas fractionation unit and user's specification value is not simultaneously, because best termination activity time can be set, thus have the specification value that can satisfy the user, and effectively cut down the effect of power consumption.In addition,, can be adjusted to and continue load running in the absorption process, end to continue no-load running in the operation, therefore can reduce the frame for movement load of compressor by the termination operation being set according to the situation in the gas fractionation unit.
Description of drawings
Fig. 1 is the gas fractionation unit of expression in the embodiment of the present invention and the block diagram of the structure example of gas fractionation unit control device;
Fig. 2 is that expression is stored in the accompanying drawing of an example that input value information is accumulated the input value of portion 15;
Fig. 3 is that expression is stored in the accompanying drawing of an example that running switching instant information is accumulated the form of portion 17;
Fig. 4 is that expression is stored in the accompanying drawing of an example that the value of calculating is accumulated the data of portion 19;
Fig. 5 is the accompanying drawing of open and-shut mode of the valve of the gas fractionation unit 2 of expression in the 1st operation;
Fig. 6 is the accompanying drawing of open and-shut mode of the valve of the gas fractionation unit 2 of expression in the 2nd or the 5th operation;
Fig. 7 is the accompanying drawing of open and-shut mode of the valve of the gas fractionation unit 2 of expression in the 3rd or the 6th operation;
Fig. 8 is the accompanying drawing of open and-shut mode of the valve of the gas fractionation unit 2 of expression in the 4th operation;
The flow chart of the operating process of gas fractionation unit control device 1 when Fig. 9 is the expression switching process;
Figure 10 is an expression calculating pressure predicted value, and the flow chart of the operating process of activity time is ended in change;
An example of the chart that the pressure when Figure 11 is an absorption process of the present invention changes;
An example of the chart that the pressure when Figure 12 is an absorption process of the present invention changes;
An example of the chart that the pressure when Figure 13 is an absorption process of the present invention changes;
Figure 14 is an example of the chart that changes of the pressure of valve 252 closed conditions of the present invention;
Figure 15 is an example of the chart that changes of the pressure of valve 252 closed conditions of the present invention;
Figure 16 is an example of the chart that changes of the pressure of valve 252 closed conditions of the present invention;
Figure 17 is the block diagram of the structure example when being provided with gas concentration measuring portion in the expression gas fractionation unit 2.
Symbol description
1 gas fractionation unit control device, 2 gas fractionation units, 11 gas fractionation unit control parts, 12 calculating parts, 15 input value information are accumulated portion 17 running switching instant information and are accumulated portion's 18 specification value and accumulate portion's 19 values of calculating and accumulate 21 control parts, 22 pressure tank determination parts, 23 gas concentration measuring portions of portion, 24 gases and take out the measurement bonding part 25 valve open and close controlling 20-1 of portion, 20-2 adsorption tower 26 compressors 200 goods jars 211,212,221,222,231,241,251,252 valves
The specific embodiment
Below, with reference to description of drawings an embodiment of the invention.Fig. 1 is the integrally-built block diagram of the gas separation system among expression the present invention.In addition, in the present embodiment, gas fractionation unit 2 is that example describes with operation, the structure of PSA nitrogen-making device.
At first, be connected with gas fractionation unit 2 and gas fractionation unit control device 1 in the gas separation system, wherein, gas fractionation unit 2 is isolated the gas of single kind and is taken out gas fractionation unit control device 1 this gas fractionation unit 2 of control from mist.
With Fig. 1 and represent that Fig. 5 of the structure of gas fractionation unit 2 illustrates the structure that gas fractionation unit 2 is had.In the gas fractionation unit 2, control part 21 carries out the output and the input of information between device control device 1 separated from the gas, and, according to command signal, carry out the control of gas fractionation unit 2 from 1 input of gas fractionation unit control device.
Among Fig. 5, compressor 26 is supplied with adsorption tower 20-1 or adsorption tower 20-2 with mixed raw material gas, and this mixed raw material gas is the goods gas separate object of compressing by pressurization.
Adsorption tower 20-1 and adsorption tower 20-2 have adsorbent, when mixed raw material gas is injected into, and the gas beyond the preferential adsorption goods gas then, thus only isolate goods gas (being nitrogen in the present embodiment), send to goods jar 200.
In addition, adsorbent for example is to be the molecular-sieve carbon etc. of easy adsorption component with oxygen, so long as preferential adsorption supply with the adsorbent of the gas beyond user's the goods gas can.
In addition, goods jar 200 savings are from the mist separated nitrogen.
In addition, as shown in Figure 3, adsorption tower 20-1 and adsorption tower 20-2 supply with nitrogen by the following operation of combination.In addition, represent by the ideograph of Fig. 5 to Fig. 8 of the open and-shut mode of each valve that has shown the gas fractionation unit 2 in each operation.
As shown in Figure 5, as the 1st operation, be that absorption process, adsorption tower 20-2 are that the combination of step for regeneration is handled according to adsorption tower 20-1.
As shown in Figure 6, as the 2nd operation, all be that the combination of ending operation is handled according to adsorption tower 20-1 and adsorption tower 20-2.
As shown in Figure 7, as the 3rd operation, all be that the combination of pressure process is handled according to adsorption tower 20-1 and adsorption tower 20-2.
As shown in Figure 8, as the 4th operation, be that step for regeneration, adsorption tower 20-2 are that the combination of absorption process is handled according to adsorption tower 20-1.
As shown in Figure 6, as the 5th operation, all be that the combination of ending operation is handled according to adsorption tower 20-1 and adsorption tower 20-2.
As shown in Figure 7, as the 6th operation, all be that the combination of pressure process is handled according to adsorption tower 20-1 and adsorption tower 20-2.
In all operations, take out nitrogen from goods jar 200 at any time by the user.After absorption process begins in the absorption process, thereby the unstrpped gas that compressor 26 is supplied with compression to adsorption tower stresses in the adsorption tower.Pressure is risen after force value in adsorption tower becomes more than the force value in the goods jar 200, as shown in Figure 5, open valve 252, nitrogen delivery article jar 200.Carry out above processing at absorption process.Therefore, after absorption process begins, when goods gas is not supplied to goods jar 200, because the user continues taking-up nitrogen, so the pressure in the goods jar 200 continue to descend.
Step for regeneration is the pressure that reduces adsorption tower, and easy adsorption component is broken away from from adsorbent, the operation of preparing for next absorption process.In the present embodiment, among Fig. 5, adsorption tower 20-2 is a step for regeneration, opens valve 222, thus release pressure.
As shown in Figure 6, end closeall valve in the operation, thereby, neither take place to flow into, also do not take place the gas of goods jar 200 is flowed out from the gas of compressor 26 the both sides of adsorption tower 20-1 and adsorption tower 20-2.
As shown in Figure 7, pressure process is to open valve 231 and valve 241, moves to because the adsorption tower side that step for regeneration and pressure descend by the gas that makes the adsorption tower side of having carried out absorption process, thereby carries out the operation of pressure recovery.Carry out this operation, thereby when switching to absorption process, can begin absorption process, have the effect that shortens the time in the pressurization adsorption tower by being higher than atmospheric pressure.
In addition, Fig. 8 is the ideograph of the open and-shut mode of the valve of expression adsorption tower 20-2 when being absorption process.
The pressure that the pressure tank determination part 22 of Fig. 1 and Fig. 5 is measured in the goods jar 200 outputs to control part 21 with the force value of measuring.
Gas take out to measure bonding part 24 and measures the gas flow that users take out, and the taking-up amount of the gas measured is outputed to control part 21.
Valve open and close controlling portion 25 controls the switching of each valve that has in the gas fractionation unit 2 according to from the operation initiation command of gas fractionation unit control device 1 by control part 21 inputs.
Valve the 211,212,221,222,231,241,251, the 252nd among Fig. 5 is respectively applied for the valve of controlling the gas flow in the gas fractionation unit 2.
In the gas fractionation unit control device 1 of Fig. 1, gas fractionation unit control part 11 carries out the output and the input of information between device 2 separated from the gas, and, export the command signal that is used to control gas fractionation unit 2 to gas fractionation unit 2.In addition, gas fractionation unit control part 11 to input value information accumulate portion 15, running switching instant information is accumulated portion 17 and is write from the information of gas fractionation unit 2 inputs.In addition, gas fractionation unit control part 11 has clocking capability, can obtain present moment.
As shown in Figure 2, the force value information in the goods jar of measuring by the pressure tank determination part 22 of gas fractionation unit 2 200, from the valve open and-shut mode information of valve open and close controlling portion 25 inputs and by gas take out measure that bonding part 24 measures from corresponding with the mensuration cycle information and be written into input value information and accumulate portion 15 by gas fractionation unit control part 11 respectively to the nitrogen flow value of m before the cycle now.
The activity time of the processing scheduled time of the zero hour of each operation during as shown in Figure 3, gas separates and expression operation is corresponding with each operation and be written into the switching instant information that turns round and accumulate portion 17.In addition, when gas fractionation unit 2 running beginnings, the specification activity time of obtaining in advance according to user's specification value is written into running switching instant information by gas fractionation unit control part 11 and accumulates portion 17, but after gas fractionation unit 2 runnings, the optimal processes time of being calculated by calculating part 12 is write running switching instant information at any time and is accumulated portion 17, thereby upgrades activity time.
In addition, user's specification value is meant the specification of the goods gas that the user wishes, is made up of purity (specification purity), pressure (specification pressure), the use traffic (specification flow) of nitrogen.
In addition, the specification activity time is the value of obtaining in advance according to following steps.With the experiment of turning round in advance of gas fractionation unit 2 contrast users' specification value.The optimal processes time that the experiment value that will obtain from this running experiment is obtained with experience keeps in advance as the specification activity time.
The function model that uses when determining the pressure of prediction goods jar 200 in the present technique has adopted System Discrimination (System Identification).The meaning of System Discrimination is meant the Mathematical Modeling of being obtained entire system by observation data.Specifically be meant, with a large amount of observation datas (for example among the present invention, the experiment values such as the time that mensuration force value, each operation spent of the goods jar of measuring in the running of gas fractionation unit 2 experiment 200) substitution is for example in the modular form as ARX (autoregression model that the has outside input) model of autoregression model, ARMAX (external source autoregressive moving-average model) model etc., thereby infers and obtain the Mathematical Modeling of the gas separation system of gas fractionation unit 2 with statistics.In addition, Mathematical Modeling is meant the functional form of the transfer function of descriptive system, obtains Mathematical Modeling, is that the meaning of the functional form of transfer function is meant and obtains the intrinsic transfer function coefficients of device.
In this specification,, be that example describes, but so long as can describe the Mathematical Modeling of the gas separation system in the gas fractionation unit 2, any model can both be used for System Discrimination with the ARX model in 1 when output of 2 inputs as an example of modular form.
In addition, following formula provides the ARX model of 2 inputs, 1 outputs.
(several 1)
In the following formula, A (q), B1 (q), B2 (q) are the multinomials of identified parameters m time, y (k) is the ordered series of numbers (being the force value in the goods jar 200 in the present embodiment) of output variable, u1 (k), u2 (k) are the ordered series of numbers (goods flow, valve open and close information) of input variable, w (k) is white noise row, q is shift operator (shift operator), and k is a present moment.The output that substitution had both been deposited and import data and carry out System Discrimination, thus determine transfer function coefficients A (q), B1 (q), B2 (q).In addition, multiply by this multinomial, be the ordered series of numbers of the k of multiplying by identified parameters multinomial A (q), B1 (q), B2 (q) to (k-1) to (k-m-1) in ordered series of numbers preceding 1 stage of derivation of (k-m).
Here, suppose at white noise row w (k)=0 o'clock, (formula 1) is out of shape obtains following formula.
(several 2)
Will be by (formula 2) of definite A (q), B1 (q), B2 (q), input variable u1 (k+1), u2 (k+1) and y (k) substitution following formula of System Discrimination, thereby can calculate the ordered series of numbers y (k+1) of the force value in the goods jar 200, y (k+1) is the pressure of the goods jar 200 after 1 second.Suppose when the goods flow does not change that u1 and u2 also know naturally, promptly can calculate, so can obtain y (k+2) by y (k+1) substitution (formula 2) with u1 (k+2), u2 (k+2) and computing after moment t=(k+1).By aforesaid operations repeatedly, can predict the force value of the goods jar 200 of random time.
User's specification value, based on the specification activity time of user's specification value and be written into specification value by the Mathematical Modeling that System Discrimination is obtained and accumulate portion 18.Upper limit force value, threshold pression value that determine in addition,, in the goods jar 200 and from the pressure process to the absorption process, make force value in the adsorption tower rise to the time identical also to be written into specification value and to accumulate portion 18 with force value in the goods jar 200 by user's specification value.
Calculating part 12 is accumulated the Mathematical Modeling that identification is read by portion 18 from specification value, the Mathematical Modeling that input variable u1 (k), u2 (k) and force value y (k) substitution are read, thereby the pressure prediction value in the goods jar 200 when calculating t=(k+1) constantly.
In addition, calculating part 12 is accumulated portion 19 from the value of calculating and is read gas taking-up amount and valve open and-shut mode, thereby obtains input variable u1 (k), u2 (k).In addition, calculating part 12 writes the value of calculating with the force value of calculating and accumulates portion 19.In addition, calculating part 12 is calculated the zero hour of each operation in the gas separation according to the value of the force value of calculating.In addition, calculating part 12 has clocking capability, can obtain present moment information.
As shown in Figure 4, accumulated portion 19 to the force value corresponding, that goods jar 200 is interior of t=(k+1) constantly and the open and-shut mode of valve 252 by the corresponding value of calculating that writes with moment t=(k-m).
In addition, in the present embodiment, with the PSA nitrogen-making device is that example is illustrated gas fractionation unit 2, but gas fractionation unit 2 also can be applicable to any gas fractionation unit, and for example PSA (transformation absorption) device, TSA (alternating temperature absorption) install, made up in addition PTSA (transformation and the alternating temperature absorption) device of PSA and TSA etc.Particularly, by the termination operation is set, is suitable for having and improves the gas fractionation unit that the device of effect is cut down in power consumption, in addition, for example is compressor by the device of ending operation raising power consumption reduction effect is set.
Then, the flow chart of use Fig. 9 and Figure 10 describes the operational example of the gas separation system in Fig. 1 structure.In addition, in the present embodiment, the running experiment by gas fractionation unit 2, specification activity time and be written into specification value in advance by the identification Mathematical Modeling that System Discrimination obtains and accumulate portion 18.
At first, accumulate the specification activity time information of portion 18, illustrate and carry out the gas separating process according to being written into specification value in advance.
In the gas fractionation unit control device 1, when the command signal of gas separation beginning was transfused to, calculating part 12 was accumulated the specification activity time information that each operation is read by portion 18 from specification value.Calculating part 12 will write running switching instant information with regard to the specification activity time information that operation is read and accumulate portion 17.In addition, calculating part 12 according to specification activity time information, the zero hour of calculating each operation, writes the zero hour of present moment as adsorption tower 20-1 absorption process running switching instant information and accumulates portion 17.
By carrying out above-mentioned processing, the switching instant information that turns round is accumulated the initialization of portion 17, will represent that simultaneously running switching instant information accumulates the signal that the initialization of portion 17 finishes and output to gas fractionation unit control part 11 (step S1).
When the initialization completion signal of accumulating portion 17 when running switching instant information was transfused to, gas fractionation unit control part 11 was accumulated portion 17 from running switching instant information and is read the i.e. identifying information of the 1st operation of information zero hour operation the earliest.When the running initiation command of the 1st operation that gas fractionation unit control part 11 will be read outputs to gas fractionation unit 2, the identifying information of the 1st operation of output is remained in memory.In the gas fractionation unit 2, valve open and close controlling portion 25 opens and closes each valve (step S2) according to the identifying information by control part 21 above-mentioned the 1st operations input, entry into service.In addition, about the switching of each valve, valve open and close controlling portion 25 receives the switching command information of each valve with the identifying information of operation, and valve open and close controlling portion 25 can control each valve according to switching information.In addition, can make valve open and close controlling portion 25 corresponding in advance, the open and-shut mode information of each valve is remained in memory,,, control each valve with reference to open and-shut mode information according to the operation identifying information of input with the identifying information of operation.
Here, gas fractionation unit control device 1 judges whether switch to subsequent processing in the cycle of every regulation.As this processing, at first, in the gas fractionation unit control device 1, gas fractionation unit control part 11 is accumulated the information zero hour that next the 2nd operation correspondence of the 1st operation identifying information that keeps in the present memory is read by portion 17 in the cycle of every regulation from running switching instant information.Whether the information and the present moment zero hour that gas fractionation unit control part 11 is relatively read, detecting is the zero hour (step S3) of subsequent processing.
Gas fractionation unit control part 11 carries out step S3 repeatedly, up to detection is the zero hour of subsequent processing, when detection is the zero hour of subsequent processing, in the time of the command signal switched to the operation identifying information and the running of gas fractionation unit 2 output subsequent processings, the identifying information of the operation of output is remained in gas fractionation unit 2 (step S4).In the gas fractionation unit control device 1, carry out step S3～S4 repeatedly, separate the command signal that finishes up to input gas.
Among above-mentioned steps S1～S4,, carry out the operation switching that gas separates always with reference to the 1st～the 6th specification activity time.Comprise the termination operation in these operations.That is,, on the basis of absorption process and pressure process, import and end operation according to the specification activity time of the specification value that is suitable for the user.At this moment, the running of the big device of power consumption such as compressor is ended.Thus, can satisfy user specification, and can not realize economizing electrification when ending operation than being provided with.But, when the taking-up amount of gas reduces than user's specification value etc., because the pressure in the goods jar 200 reaches the time lengthening of threshold pression value, so the time that can set as the termination activity time also prolongs, but because the specification activity time is based on certain value of user specification, therefore not talkative this is the optimal processes time surely.
Therefore, the operational example of the method for controlling of operation of gas fractionation unit 2 is shown below, uses pressure prediction value that calculate according to the taking-up amount of gas, in the goods jar 200, calculate the more suitably activity time of each operation, switch running according to the activity time that upgrades.In addition, the pressure prediction value of said products jar 200 will be carved into n week after date as estimation range when present, obtain with regard to each cycle.In addition, the meaning in cycle is meant the determined circulation (cycle) of each data in the gas fractionation unit 2.
Figure 11～Figure 16 is the concept map of the operation in the present embodiment.
Figure 11 represents in the absorption process, from now in the estimation range of n week after date, and the pressure side's chart in the goods jar 200 when the pressure prediction value had not only reached upper limit force value but also do not reached the threshold pression value.In addition, this is equivalent to step S44 described later.
Figure 12 represents in the absorption process, from now in the estimation range of n week after date, and the pressure schedule in the goods jar 200 when α 1 all after date pressure prediction values reach upper limit force value.In addition, this is equivalent to step S19 described later.
Figure 13 represents in the absorption process, and from now in the estimation range of n week after date, α 2 all after date pressure prediction values reach upper limit force value, and the pressure schedule (α 2＜β 2) in the goods jar 200 of β 2 all after date pressure prediction values when reaching the threshold pression value.In addition, this is equivalent to from present to the situation of carrying out step S19 described later and step S33 the n week after date.
Figure 14 represents to end in the operation, from now in the estimation range of n week after date, and the pressure schedule in the goods jar 200 when the pressure prediction value had not only reached upper limit force value but also do not reached the threshold pression value.In addition, this is equivalent to step S45 described later.
Figure 15 represents to end in the operation, in the estimation range from present to n week after date, and the pressure schedule in the goods jar 200 when β 3 all after date pressure prediction values reach the threshold pression value.In addition, this is equivalent to step S33 described later.
Figure 16 represents to end in the operation, and from now in the estimation range of n week after date, β 4 all after date pressure prediction values reach the threshold pression value, and the pressure schedule (β 4＜α 4) in the goods jar 200 of α 4 all after date pressure prediction values when reaching upper limit force value.In addition, this is equivalent to from present to the situation of carrying out step S19 described later and step S33 the n week after date.
Then, using the flow chart of Figure 10 is that the operation that activity time is regulated describes to feature of the present invention.In this operational example, carry out the processing of above-mentioned steps S1～S4, increasing feature of the present invention in this operation is the operation that activity time is regulated.
At first, in the gas fractionation unit 2, pressure tank value information from the cycle of every regulation pressure tank determination part 22 to 1 output of gas fractionation unit control device, the gas measured at take out the gas taking-up amount information of measurement bonding part 24 mensuration and the valve open and-shut mode information of valve open and close controlling portion 25 management.In the form of Fig. 2, gas fractionation unit control part 11 is registered the information of input respectively as present value, per 1 cycle of the data of having registered just is moved to over, thereby upgrades form integral body (step S11).In addition, this step S11 always carries out repeatedly in the cycle of every regulation, and the information of being made up of force value, valve open and-shut mode information and gas taking-up amount information, be used to be input to the identification Mathematical Modeling is accumulated portion 15 from now being written into input value information to m each cycle before the cycle.
Then, in the gas fractionation unit control device 1, it is to carry out the moment (step S12) that pressure prediction calculates that calculating part 12 detects.Every n cycle of this detection method carries out.In addition, about the time through the n cycle, the needed time in the cycle of regulation multiply by cycle times n and calculates the estimation range time, and the moment that running is added the estimation range time zero hour is as carrying out the moment that pressure prediction calculates.
The form that calculating part 12 is accumulated portion 15 from the input value information shown in Fig. 2 read from now to the m force value in each cycle before the cycle, valve open and-shut mode information and gas taking-up amount information as input value.Calculating part 12 writes the form shown in Figure 4 (step S13) that the value of calculating is accumulated portion 19 with the input value of reading as the value from the k cycle to (k-m) cycle.Here, k carries out pressure prediction when calculating, cycle corresponding with up-to-date input value among the input value of substitution; M is by the period of the input value of substitution Mathematical Modeling.That is, the input value from the input value in k cycle to (m+1) cycle portions of the input value that traces back to the m cycle is by the meaning of substitution Mathematical Modeling.
Calculating part 12 is accumulated the Mathematical Modeling that identification is read by portion 18 from specification value.Then, substitution is write that the value of calculating is accumulated the input value of portion 19 to calculating part 12 and the function u1 (k) and the function u2 (k) that obtain are applicable to the Mathematical Modeling of reading, and calculates the pressure prediction value (step S14) of 1 all after dates.The force value in pressure prediction value conduct (k+1) cycle of 1 all after dates that calculating part 12 will be calculated writes the value of calculating shown in Figure 4 and accumulates the form of portion 19 (step S15).
Then, calculating part 12 from the value of calculating accumulate portion 19 read the force value in k cycle and (k+1) cycle force value and compare, whether the detected pressures value is to increase tendency or reduce tendency, that is, be absorption process in the cycle (k+1).But, even absorption process, the force value in making adsorption tower rise to goods jar 200 in the identical time of force value, the pressure in the goods jar 200 also have the situation (step S16) that reduces tendency.
When force value increased, calculating part 12 judged that gas fractionation unit 2 is to be in the absorption process, accumulates portion 18 from specification value and reads upper limit force value.Then, whether the upper limit force value that calculating part 12 is relatively read and (k+1) the pressure prediction value in cycle surpass upper limit force value according to the pressure prediction value, judge whether should finish absorption process (step S17) during the cycle at (k+1).
When the pressure prediction value is the above value of upper limit force value, owing to now become the moment that begins to end operation to (k+1) all after dates, so will with (k+1) cycle moment corresponding as absorption process finish time, valve open and-shut mode that will be corresponding with (k+1) cycle writes the value of calculating and accumulates portion 19 (step S18) as " termination operation ".According to this step S18, the damage goods jar 200 that produces in the time of can avoiding pressure in the goods jar 200 to surpass upper limit force value, adverse current, the load of compressor 26 surpassed the state of affairs of necessity etc.
Calculating part 12 is obtained the information and the information zero hour of the subsequent processing zero hour of present operation by following steps, thus the activity time of calculating present operation.At first, the present operation identifying information output of 12 pairs of gas fractionation unit control parts of calculating part, 11 outputs requires signal.The present operation identifying information of 11 pairs of calculating parts of gas fractionation unit control part, 12 outputs.Thus, calculating part 12 can get the identifying information of operation till now.Then, calculating part 12 is calculated by following steps and is ended operation zero hour.Calculating part 12 is by present moment and calculate moment in (k+1) cycle the circulation timei in 1 cycle.In addition, the termination operation that will calculate of the calculating part 12 running switching instant information that writes Fig. 3 the zero hour is accumulated the form (step S19) of portion 17.
Calculating part 12 writes the storage area that the value of calculating is accumulated the running switching instant information updating sign of portion 19 with 1, thereby creates the sign (step S20) that expression running switching instant information is updated.Then, calculating part 12 is owing to carry out pressure prediction in cycle of next regulation of n among the cycle, carries out k is added 1 value increase progressively (the step S21) as new k.
In addition, among the step S16, when (k+1) force value in cycle reduced than the force value in k cycle, calculating part 12 was judged not to goods jar 200 supply gas, accumulates portion 18 from specification value and reads the threshold pression value.Then, whether the threshold pression value that calculating part 12 is relatively read and (k+1) the pressure prediction value in cycle are lower than the threshold pression value according to the pressure prediction value, judge whether and begin during the cycle to goods jar 200 supply gas (step S31) at (k+1).When the pressure prediction value is the following value of threshold pression value, if do not begin during the cycle to goods jar 200 supply gas at (k+1), then pressure descends, and can't satisfy the user specification value, so from becoming to (k+1) all after dates now the nitrogen of goods jar 200 is supplied with the zero hour.
Therefore, nitrogen supply with the moment promptly open valve 252 zero hour be force value after absorption process begins, in the adsorption tower reach with goods jar 200 in the identical moment of force value.Therefore, the zero hour of absorption process is for from deducting force value in the adsorption tower to moment of the time portion identical with the interior force value of goods jar 200 to moment of (k+1) all after dates now.Therefore, the valve open and-shut mode that calculating part 12 will be corresponding with (k+1) cycle writes the value of calculating and accumulates portion 19 (step S32) as " absorption process ".
Calculating part 12 obtain according to following steps present operation the information zero hour, subsequent processing the zero hour information and adsorption tower in force value reach with goods jar 200 in the identical time of force value, thereby the activity time of calculating present operation.At first, the output of the present operation identifying information of 12 pairs of gas fractionation unit control parts of calculating part 11 output requires signal.Gas fractionation unit control part 11 outputs to calculating part 12 with present operation identifying information.Thus, calculating part 12 can get the identifying information of operation till now.Then, calculating part 12 is calculated absorption process zero hour by following steps.At first, calculating part 12 from specification value accumulate portion 18 read force value in the adsorption tower reach with goods jar 200 in the identical time of force value.Calculating part 12 is by present moment and calculate moment in (k+1) cycle the circulation timei in 1 cycle.In addition, calculating part 12 is by the moment in (k+1) cycle of calculating, and calculates as the absorption process zero hour having reviewed the moment that the force value in the adsorption tower reaches the time portion identical with force value in the goods jar 200.In addition, calculating part 12 is accumulated portion 17 with the running switching instant information that writes Fig. 3 form the zero hour of the absorption process of calculating.In addition, calculating part 12 compares the zero hour corresponding with present operation identifying information and the absorption process zero hour that writes, thereby calculate the activity time of present operation, new process time of calculating is write running switching instant information as the activity time of operation now accumulate portion 17 (step S33).
Calculating part 12 writes the storage area that the value of calculating is accumulated the running switching instant information updating sign of portion 19 with 1, creates the sign (step S34) that expression running switching instant information is updated.Then, calculating part 12 carry out step S21 k increase progressively processing.In addition, among the step S17 during the discontented upper limit force value of pressure prediction value, and when the pressure prediction value surpasses the threshold pression value among the step S31, all carry out step S21 k increase progressively processing.
Calculating part 12 is k and n relatively, the k=n according to whether, detect predetermined predetermined period scope, be calculate (the step S41) whether n week after date finishes the pressure prediction value.
When after date was not also finished calculating of pressure prediction value to n week, calculating part 12 began to handle repeatedly from step S15, calculated the pressure prediction value to all after dates of n.
Then, the operation when after date has been calculated the pressure prediction value to n week describes.Calculating part 12 is read and has been write the storage area that the value of calculating is accumulated the information updating zero hour sign of portion 19, detects updating mark and whether creates (step S42).When updating mark is not created, judge that operation can not switched in estimation range, upgrade the operation zero hour that running switching instant information is accumulated portion 17, make in estimation range not switching process.
S16 is same with step, and calculating part 12 compares the pressure prediction value of moment t=k and the pressure prediction value of moment t=(k+1), and carrying out the pressure prediction value is to increase to be inclined to or the judgement (step S42) of minimizing tendency.The pressure prediction value of goods jar 200 is when increasing tendency, to be made as estimation range the zero hour of ending operation after the moment, the pressure prediction value of goods jar 200 is when reducing tendency, absorption process is made as estimation range after the moment zero hour, and calculating part 12 is accumulated portion 17 with writing running switching instant information the interim zero hour.In addition, absorption process and interim zero hour of ending operation for example constantly t=(k+2) wait so long as after the estimation range, when carrying out pressure prediction, owing to being upgraded at any time the zero hour, so can be made as any moment.
Above-mentioned steps S11～S42 carried out in the moment that multiply by each estimation range time of calculating as n cycle of estimation range the cycle time of regulation.According to this structure,, also can reach the moment of upper limit force value from the force value that the relation of the force value of user's gas taking-up amount and goods jar 200 is calculated goods jar 200 even when user's gas taking-up amount reduces than user specification.Therefore, calculating part 12 should be constantly writes running switching instant information and accumulates portion 17 as ending operation the zero hour, thus gas fractionation unit control part 11 according to running switching instant information accumulate portion 17 the zero hour information to the command signal of gas fractionation unit 2 output switching process.Gas fractionation unit 2 can be ended the beginning of operation by receiving the operation switching command.At this moment, user's gas taking-up amount reduces, thereby the pressure in the goods jar 200 reach the time ratio of threshold pression value overtime when turn round by the user specification value also can be predicted the moment that reaches the threshold pression value, calculates the moment that switches to absorption process from the termination operation constantly by this.
In the gas fractionation unit 2, finish to end operation, when switching to absorption process, according to make force value in the adsorption tower rise to goods jar 200 in the identical time of force value, after absorption process began, there was time lag (time lag) in the pressure in goods jar 200 when rising.Therefore, in the existing method, owing to can't satisfy the pressure of user specification value, to switch to absorption process after the threshold pression value be impossible so the pressure in the goods jar 200 reach.But, according to the present invention, even when the pressure in predetermined termination operation goods finish time jar 200 does not reach the threshold pression value in the past, gas fractionation unit control device 1 also can be calculated the moment that reaches the threshold pression value, calculate the best operation finish time of ending, prolong the time of ending operation as far as possible, can significantly suppress power consumption, satisfy the effect of user's specification value thereby have.
In addition, in the foregoing description, with the threshold pression value in the goods jar 200 as being illustrated according to the predetermined certain value of user specification, but can also with its as with goods gas be that the gas taking-up of nitrogen is measured proportional value, the suitable threshold pression value of being calculated by following formula.
Psp＝(Pmax-Pmin)/(Fmax)×F
Psp is the threshold pression value of obtaining; Pmax is the threshold pression value in the goods jar 200 of gas taking-up amount when being 100% user specification value; Pmin is the force value in the user specification value; Fmax is the gas taking-up amount (maximum) in the user specification value; F is present gas taking-up amount.In addition, Fmax and F also can be the gas extraction efficiencies.
By using the threshold pression value of calculating by above-mentioned formula,, can calculate more suitably operation switching instant according to gas taking-up amount.
In addition, there are various types in the device element that gas fractionation unit 2 has at the aspects such as discharge-amount of goods pressure specification value, the capacity that is used for the goods groove of storage articles gas, goods purity, attached compressor, here proposing only to change with simple setting value can be corresponding all types of, and can the cheap method that realizes.
In the gas fractionation unit 2 of the type that the capacity of goods jar, goods purity, attached compressor discharge-amount etc. are different, the Mathematical Modeling difference of goods pressure tank.So the Mathematical Modeling that System Discrimination is determined is also according to type of device and difference.But during each device implementation system identification, the workload of plant proving run increases.So, the relatively measured value and the threshold pression value of the minimum of goods pressure tank, both exist when poor, adjust by the increase and decrease of carrying out the threshold pression value, can corresponding different device type.
Goods purity can be subjected to environment (for example temperature, air pressure, the season etc.) influence of rotating device.So goods purity reaches the value of regulation when following, the increase of the threshold pression value by carrying out the goods pressure tank can prevent the deterioration of goods purity.Particularly, as shown in figure 17, newly be provided with gas concentration measuring portion 23 in the gas fractionation unit 2.In addition, structure identical with Fig. 1 among Figure 17 marks same-sign, omits its explanation.
Gas concentration measuring portion 23 measures the nitrogen in the goods jars 200 or the concentration of the impure gas beyond the nitrogen, calculates the purity of the nitrogen in the goods jar 200, and the Reinheitszahl of the nitrogen of calculating is outputed to control part 21.
With the lower limit of following formula computing goods purity, the goods purity that the lower limit of the goods purity that relatively obtains and gas concentration determination part 23 are measured.
Csp＝Cmax-(Cmax-Cmin)/(Fmax)×F
Csp is the lower limit of the goods purity obtained; Cmax is the peak of goods purity; Cmin is the goods purity that the gas taking-up in the user specification value was measured 100% o'clock; Fmax is the gas taking-up amount (maximum) in the user specification value; F is present gas taking-up amount.In addition, Fmax and F also can be the gas extraction efficiencies.
Compare the lower limit of the goods purity of obtaining by above-mentioned formula and the goods Reinheitszahl of measuring by gas concentration measuring portion 23, when the lowest purity value of being measured by gas concentration measuring portion 23 is lower than the lower limit of goods purity, the threshold pression value of the pressure in the goods jar 200 is brought up to setting, thereby have the effect that the purity of preventing worsens.
In addition, the setting among the present invention can be transfused to gas fractionation unit control device 1 in advance, also can input block be set at gas fractionation unit control device 1, and the user determines setting by input block.
In addition, in the present embodiment, the structure that the gas fractionation unit control device 1 that will control gas fractionation unit 2 is provided to the outside of gas fractionation unit 2 is illustrated, but also can be the structure that has gas fractionation unit control device 1 in the inside of gas fractionation unit 2.
In addition, in the present embodiment, gas fractionation unit control part 11 to gas fractionation unit control device 1 has clocking capability, obtain present moment by this clocking capability, thereby the structure of switching process is illustrated, but the structure of gas fractionation unit control part 11 also can be not have clocking capability, and has the function in the elapsed time of the operation of obtaining.At this moment, gas fractionation unit control part 11 is relatively accumulated the activity time of the operation that portion 17 reads and the elapsed time of operation from running switching instant information.Gas fractionation unit control part 11 carries out the comparison with elapsed time of operation of reading of activity time at any time, and whether the elapsed time during according to operation surpasses activity time, and whether detect is the switching instant of operation.
In addition, the changing method of this operation is not limited to said method, so long as the method that the operation switching instant that can calculate according to calculating part 12 or activity time come switching process, any changing method can be suitable for.
According to the present invention, even gas fractionation unit utilization and user's specification value is not simultaneously, because best termination activity time can be set, thus have the specification value that satisfies the user, and can cut down the effect of consumption rate effectively.In addition, the termination operation is set, can be adjusted to and continues load running in the absorption process, end to continue no-load running in the operation,, have very big meaning on the industry so can reduce the frame for movement load of compressor according to the situation in the gas fractionation unit.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the control method of a pressure swing adsorption gas separation device, it is characterized in that, a plurality of adsorption towers of having filled adsorbent are carried out these 3 operations of absorption process, pressure process and step for regeneration at least respectively repeatedly, thus easy adsorption component in the separate raw materials mist and difficult adsorption component and make goods gas;
When after described absorption process and the end of described step for regeneration, the termination operation being set, change the time of described termination operation according to the change prediction of goods jar.
2. the control method of a pressure swing adsorption gas separation device, it is characterized in that, a plurality of adsorption towers of having filled adsorbent are carried out these 3 operations of absorption process, pressure process and step for regeneration at least respectively repeatedly, thus easy adsorption component in the separate raw materials mist and difficult adsorption component and make goods gas; This method has:
The process of the function model of the force value of the goods jar that storage is had by the gas fractionation unit experiment value identification, described in advance;
Storage representation is from the flow information of the use amount of the gas of described gas fractionation unit input, force value in the described goods jar and the process of clocking information:
Read described function model, the described function model that the described flow information of reading, described force value and the input of described clocking information are read, thereby calculate the pressure prediction value of described goods jar, according to described pressure prediction value, regulate and calculate the zero hour of termination operation in the described gas fractionation unit, that after described absorption process and the end of described step for regeneration, be provided with and the process of the finish time;
According to the process of zero hour of described 3 operations, described termination operation and the finish time controlling described gas fractionation unit.
3. control device, it is characterized in that, a plurality of adsorption towers of having filled adsorbent are carried out these 3 operations of absorption process, pressure process and step for regeneration at least respectively repeatedly, thus easy adsorption component in the separate raw materials mist and difficult adsorption component and make goods gas; This device has:
The function model storage part, the function model of the force value of the goods jar that storage is had by the gas fractionation unit experiment value identification, described in advance;
The input value information memory cell, storage representation is from the flow information of the use amount of the gas of described gas fractionation unit input, force value and the clocking information in the described goods jar;
Calculating part, read described function model from described function model storage part, the described function model that the described flow information that will read from described input value information memory cell, described force value and the input of described clocking information are read, thereby calculate the pressure prediction value of described goods jar, according to described pressure prediction value, regulate and calculate the zero hour and the finish time of termination operation in the described gas fractionation unit, that after described absorption process and the end of described step for regeneration, be provided with;
Control part is according to controlling zero hour of described 3 operations, described termination operation and the finish time described gas fractionation unit.
4. control device according to claim 3, it is characterized in that, the cycle of the every regulation of described calculating part is calculated the described pressure prediction value of described goods pressure tank, this pressure prediction value relatively calculated and the upper limit set value of described goods pressure tank, whether surpass described upper limit setting thereby detect described pressure prediction value, calculate the finish time of described absorption process or the continuation time of described absorption process thus.
5. control device according to claim 3, it is characterized in that, the cycle of the every regulation of described calculating part is calculated the described pressure prediction value of described goods pressure tank, this pressure prediction value relatively calculated and the lower limit set value of described goods pressure tank, whether be lower than described lower limit set thereby detect described pressure prediction value, calculate the finish time of described termination operation or the continuation time of described termination operation thus.
6. control device according to claim 3, it is characterized in that, described calculating part is calculated the poor of minimum and described lower limit set value among the measured value of the described goods pressure tank of importing from described goods jar, regulate described lower limit set value when this difference surpasses the threshold value of stipulating.
7. control device according to claim 3 is characterized in that, described calculating part is regulated described lower limit set value according to the measured value of the goods gas concentration from the described goods jar of described gas fractionation unit input.
8. control device according to claim 3 is characterized in that, described calculating part is regulated described lower limit set value according to the described flow information of the described goods gas of importing from described gas fractionation unit.
9. program is used to make the function of each described control device performance information processor of claim 1～8.
10. recording medium, it has write down the described program of claim 9 and can read by computer.
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| JP2006266461A JP5008937B2 (en) | 2006-09-29 | 2006-09-29 | Control method for gas separation device and control device for gas separation device |
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| KR (1) | KR101086357B1 (en) |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102688655A (en) * | 2012-06-01 | 2012-09-26 | 江南大学 | Intelligent control method for organic waste gas reclaiming |
| CN103566710A (en) * | 2013-11-08 | 2014-02-12 | 中石化南京工程有限公司 | Multi-tower control method for pressure-swing adsorption device |
| CN104121476A (en) * | 2013-04-24 | 2014-10-29 | 气体科技能源概念公司 | Method for optimizing gas adsorption storage, and apparatus thereof |
| CN107407272A (en) * | 2015-02-04 | 2017-11-28 | 株式会社日立产机系统 | Gas boost compression set and gas compressor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US8506639B2 (en) | 2004-03-31 | 2013-08-13 | DePuy Synthes Products, LLC | Sliding patellar prosthesis |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2872678B2 (en) * | 1988-12-09 | 1999-03-17 | 大同ほくさん株式会社 | Reduction operation control method in pressure swing adsorption system |
| JPH04371210A (en) * | 1991-06-20 | 1992-12-24 | Tokico Ltd | Gas separation equipment |
| JP3781187B2 (en) * | 2001-06-29 | 2006-05-31 | 大陽日酸株式会社 | Operation method of pressure fluctuation adsorption gas separation device |
| TWI238079B (en) | 2001-11-27 | 2005-08-21 | Nippon Oxygen Co Ltd | Method and device for separating gas |
| JP2005270953A (en) | 2004-02-27 | 2005-10-06 | Kuraray Chem Corp | Method for separating mixture gas, and device for separating nitrogen gas and system for consuming nitrogen gas |
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2006
- 2006-09-29 JP JP2006266461A patent/JP5008937B2/en active Active
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102688655A (en) * | 2012-06-01 | 2012-09-26 | 江南大学 | Intelligent control method for organic waste gas reclaiming |
| CN104121476A (en) * | 2013-04-24 | 2014-10-29 | 气体科技能源概念公司 | Method for optimizing gas adsorption storage, and apparatus thereof |
| CN104121476B (en) * | 2013-04-24 | 2016-08-10 | 气体科技能源概念公司 | For the method and apparatus making the absorbing and storing of gas optimize |
| CN103566710A (en) * | 2013-11-08 | 2014-02-12 | 中石化南京工程有限公司 | Multi-tower control method for pressure-swing adsorption device |
| CN103566710B (en) * | 2013-11-08 | 2015-10-21 | 中石化南京工程有限公司 | A kind of multi-tower control method for pressure-swing absorption apparatus |
| CN107407272A (en) * | 2015-02-04 | 2017-11-28 | 株式会社日立产机系统 | Gas boost compression set and gas compressor |
Also Published As
| Publication number | Publication date |
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| KR101086357B1 (en) | 2011-11-23 |
| JP2008080311A (en) | 2008-04-10 |
| JP5008937B2 (en) | 2012-08-22 |
| KR20080030482A (en) | 2008-04-04 |
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