CN101209392B - Transformation adsorption type gas generating device - Google Patents
Transformation adsorption type gas generating device Download PDFInfo
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- CN101209392B CN101209392B CN2007100864189A CN200710086418A CN101209392B CN 101209392 B CN101209392 B CN 101209392B CN 2007100864189 A CN2007100864189 A CN 2007100864189A CN 200710086418 A CN200710086418 A CN 200710086418A CN 101209392 B CN101209392 B CN 101209392B
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Abstract
The device of the present invenion includes: a plurality of air generating units containing two adsorbing grooves filling with absorbent, production groove, absorbing valve for closing and opening the flow path to guide material air to the absorbing grooves, exhaust valve, equalizing valve and outlet valve; aggregation production grooves for aggregating production gas storing in each production grooves, which supply constringent material air between two absorbing grooves alternately and implement absorbing motion as well as releasing motion for releasing gas in low pressure. A control device has the function of controlling the running of a plurality of gas generating units and switching running unit number, and controlling so as to offset with same time interval in each unit at the time of switching the motion of each gas generating unit. It is able to answer the accretion of production gas supply flow easily and obtain economical running when decreasing or increasing the production gas supply flow in large range.
Description
Technical field
The present invention relates to be used for produce the transformation adsorption type gas generating device of nitrogen or oxygen by pressure swing adsorption method (Pressure Swing Adsorption).
Background technology
As being used for one of non-cryogenic technique of making nitrogen or oxygen, known have PSA (transformation absorption) method.According to the PSA method, with the air raw material for example, by oxygen by the adsorbents adsorb raw air, can separating nitrogen and obtain highly purified nitrogen as product gas.In addition, the technology of PSA is not only comprising proper psa process but also is comprising under the meaning of the same process that VSA (change vacuum suction) is such and using.
In psa process, utilize the adsorbance characteristic bigger of high pressure than the adsorbance of low pressure.That is,, turn round continuously while recover the adsorption capacity of adsorbent by carrying out repeatedly that the absorption that makes the adsorbent that has under high pressure adsorbed oxygen under low pressure discharge oxygen discharges.Thereby, in the operation of PSA, use two adsorption tanks of filling adsorbent, in an adsorption tank, carry out under the high pressure absorption process during in, in another groove, carry out the release process (for example with reference to TOHKEMY 2002-239330 communique) under the low pressure.
Like this, alternately adsorb release process, switch the stream that arrives the gas of product groove from the introducing port of raw air through adsorption tank corresponding to the operation that will carry out in order to use two adsorption tanks.That is, switch a plurality of valves in good time and turn round, so that can suitably carry out the derivation of importing, product gas or from exhaust of the adsorption tank that carries out release process etc. to the raw air of the adsorption tank that carries out absorption process.
According to above-mentioned such transformation adsorption type gas generating device that constitutes,, and in adsorption tank and product groove, also need bigger capacity for the jumbo raw air of needs source with big flow supplying products gas.Thereby, if the product gas amount that consumes needs large-scale device more at most,, need replace with more large-scale device for the flow of the product gas that can supply with being increased corresponding to the increase of the consumption of product gas, the burden of equipment investment is bigger.
In addition, can spread all under the situation about increasing and decreasing, also need adsorption tank and product groove are cooperated maximum product gas flow and make bigger scale from low discharge to big flow in the supply that makes product gas.Thereby, under situation, have to become uneconomic running by the less product gas flow of so large-scale unit feeding.
Summary of the invention
Thereby, the purpose of this invention is to provide a kind of transformation adsorption type gas generating device that can easily tackle the increase of product gas supply flow rate and can carry out product gas is spreaded all over the running of supplying with from low discharge to big flow increase and decrease economically.
Transformation adsorption type gas generating device of the present invention possesses: the 1st and the 2nd adsorption tank is filled with adsorbent; The the 1st and the 2nd absorption valve will open and close respectively to the stream of the above-mentioned the 1st and the 2nd adsorption tank importing raw air; The product groove stores the product gas that goes out from the above-mentioned raw materials air separation in the above-mentioned the 1st and the 2nd adsorption tank; The the 1st and the 2nd air bleeding valve, will from the above-mentioned the 1st and the exhaust of the 2nd adsorption tank open and close respectively with stream; Equalizing valve will make all pressures passage opening/closing that is communicated with between the above-mentioned the 1st and the 2nd adsorption tank; Reflux and use stream, will be communicated with between the above-mentioned the 1st and the 2nd adsorption tank via flow control valve; The the 1st and the 2nd outlet valve opens and closes the stream between the above-mentioned the 1st and the 2nd adsorption tank and the said goods groove respectively; And, control device, the valve drive signal of the switching of above-mentioned each valve of supply control; By switching above-mentioned each valve, can in the above-mentioned the 1st and the 2nd adsorption tank, alternately supply with compressed raw air and under high pressure carry out above-mentioned adsorbent absorption absorption action and pressure is reduced and release movement that the gas that is adsorbed in the above-mentioned adsorbent is discharged; Above-mentioned control device is controlled at and adsorbs action in above-mentioned the 1st adsorption tank and carry out the A operation of release movement in above-mentioned the 2nd adsorption tank, adsorb action and carry out the B operation of release movement and above-mentioned equalizing valve is open and make the pressure of above-mentioned two adsorption tanks become impartial pressure process in above-mentioned the 1st adsorption tank in above-mentioned the 2nd adsorption tank, so that when above-mentioned pressure process being clipped between above-mentioned A operation and above-mentioned this two-step of B operation, alternately carry out this two-step; Wherein, the above-mentioned the 1st and the 2nd adsorption tank, the said goods groove, the above-mentioned the 1st and the 2nd absorption valve, the above-mentioned the 1st and the 2nd air bleeding valve, above-mentioned equalizing valve, above-mentioned backflow constitute the gas generating unit with stream and the above-mentioned the 1st and the 2nd outlet valve; This transformation adsorption type gas generating device comprises many above-mentioned gas generating units; Also possess: the raw air source, above-mentioned a plurality of gas generating units are supplied with the above-mentioned raw materials air via the above-mentioned the 1st and the 2nd absorption valve; Gather the product groove, gather the said goods gas in each the product groove that is stored in above-mentioned many gas generating units; The raw air pressure detector, the pressure in detection above-mentioned raw materials air source; The product gas stream amount detector detects the flow that gathers the product gas that the product concentrated flow goes out from above-mentioned; The oxygen concentration detector detects the oxygen concentration that gathers the said goods gas that the product concentrated flow goes out from above-mentioned; And, gather product groove pressure detector, detect the above-mentioned pressure that gathers in the product groove; 1 above-mentioned gas generating unit, above-mentionedly gather the product groove and above-mentioned control device one constitutes machine tool; Other above-mentioned gas generating units independently constitute respectively as handset and can be connected removably with respect to above-mentioned machine tool; Above-mentioned control device is supplied with the valve drive signal of the switching of controlling above-mentioned each valve in above-mentioned many gas generating units and is controlled running and change the platform number of the running in above-mentioned many gas generating units according to the detected value of above-mentioned each detector; And, when making the running of many above-mentioned gas generating units, control so that switch above-mentioned A operation, above-mentioned B operation and above-mentioned pressure process the time be engraved in each of above-mentioned each gas generating unit and be offset with constant duration.
The effect of invention: according to the transformation adsorption type gas generating device of said structure, gas generating unit running can be made selectively, economical running can be carried out corresponding to the increase and decrease of the product gas amount that is consumed for required number of the setting value that is suitable for operating condition.And, switch many gas generating units by switching instant with constant duration with some cycles, the pressure reduction of gathering in the product groove is less, can stably obtain approaching the product gas pressure of raw air pressure.Thereby, can compact conformation ground constitute jumbo gas generating system, set up also and be easier to.
Description of drawings
Fig. 1 is the synoptic diagram of the nitrogen gas generating device that constitutes as the transformation adsorption type gas generating device of one embodiment of the present invention of expression.
Fig. 2 is the synoptic diagram that expression is included in the state of the operation in the independent action of the gas generating unit in the device of Fig. 1.
Fig. 3 is the synoptic diagram of state of another operation in the action of this gas generating unit of expression.
Fig. 4 is the synoptic diagram of state of another operation again in the action of this gas generating unit of expression.
Fig. 5 is that the pressure in the action of this gas generating unit of expression changes and action figure constantly.
Fig. 6 is that the pressure that gathers the product groove in the action of expression when many gas generating units in the device of Fig. 1 are turned round simultaneously changes and action figure constantly.
Fig. 7 is that the pressure of its 2nd adsorption tank of expression changes and action figure constantly.
Fig. 8 is that the pressure of its 1st adsorption tank of expression changes and action figure constantly.
Fig. 9 is the figure that the pressure of its raw air groove of expression changes.
The specific embodiment
In transformation adsorption type gas generating device of the present invention, preferably, possesses the raw air groove that stores the above-mentioned raw materials air and supply with as above-mentioned raw materials air source.
In addition, preferably, constitute possess 1 above-mentioned gas generating unit, the above-mentioned machine tool that gathers product groove and above-mentioned control device; Other above-mentioned gas generating units can connect 1 or many with respect to above-mentioned machine tool as handset.In the case, further preferably, above-mentioned machine tool possesses the raw air groove that stores the above-mentioned raw materials air and supply with as above-mentioned raw materials air source.
In addition, preferably, also possess: the raw air pressure detector, detect the pressure in the raw air groove; The product gas stream amount detector detects the flow that gathers the product gas that the product concentrated flow goes out from above-mentioned; The oxygen concentration detector detects the oxygen concentration that gathers the said goods gas that the product concentrated flow goes out from above-mentioned; And, the pressure in above-mentioned detected set dimerization product groove gather at least 1 detector selecting the product groove pressure detector; Above-mentioned control device is according to the platform number of the above-mentioned gas generating unit of the detected value change running of each detector.
Perhaps, preferably, also possess: the raw air pressure detector, detect the pressure in the raw air groove; The product gas stream amount detector detects the flow that gathers the product gas that the product concentrated flow goes out from above-mentioned; The oxygen concentration detector detects the oxygen concentration that gathers the said goods gas that the product concentrated flow goes out from above-mentioned; Pressure in above-mentioned detected set dimerization product groove gather at least 1 detector selecting the product groove pressure detector; And, display, the detected value of above-mentioned each detector of demonstration; Above-mentioned control device can be by manual operation running the platform number of above-mentioned gas generating unit.
In addition, preferably, possesses the contravariant air compressor (the empty Genki Ya of イ Application バ one タ formula Shrink Machine) that is used for the compression of above-mentioned raw materials air; Above-mentioned control device is controlled the ability of above-mentioned contravariant air compressor according to the operating number of above-mentioned gas generating unit.
Below, explain transformation adsorption type gas generating device in the embodiments of the present invention with reference to accompanying drawing.As one embodiment of the present invention, the nitrogen gas generating device that uses the PSA method is described.In addition, under the situation of the oxygen generator that uses the PSA method, the using method of concentration detected value that is filled in adsorbent difference in the adsorption tank, oxygen concentration detector is equal, need carry out some changes, but can similarly constitute with nitrogen gas generating device.
Fig. 1 is the synoptic diagram of structure of the nitrogen gas generating device of expression one embodiment of the present invention.This device possesses many (being 3 in Fig. 1) gas generating unit 10a, 10b and 10c, raw air grooves 11, gathers product groove 12 and control device 13.
In the present embodiment, with 1 gas generating unit 10c and raw air groove 11, gather 13 combinations of product groove 12 and control device and constitute machine tool 14.In machine tool 14, be provided with raw air inlet 4, be used for product gas outlet 15, raw air outlet 16 and the nitrogen inlet 17 of product gas to the outside supply.To enter the mouth from raw air and 4 import and be stored into the raw air groove 11 via the raw air of air cleaner 5.Raw air groove 11 is connected with gas generating unit 10c and two raw air outlets 16.Product gas outlet 15 with gather product groove 12 and be connected.Gathering product groove 12 also is connected with gas generating unit 10c and two nitrogen inlets 17.
Other gas generating units 10a, 10b constitute handset, can be with respect to machine tool 14 dismounting.That is, the raw air of machine tool 14 outlet 16 and raw air on being located at gas generating unit 10a, 10b respectively enter the mouth and 18 are connected.In addition, the nitrogen outlet of being located at respectively on gas generating unit 10a, the 10b 19 is connected with nitrogen inlet 17 on being located at machine tool 14.From raw air groove 11 couples of each gas generating unit 10a, 10b, 10c base feed air.In gathering product groove 12, gather and store product gas (nitrogen) from each gas generating unit 10a, 10b, 10c.
Connect by these, combine with machine tool 14, become one and can turn round as gas generating unit 10a, the 10b of handset.The unified control of control device 13 is located at the action of the valve among each gas generating unit 10a, 10b and the 10c etc.By this structure, can constitute jumbo gas generating system in compact conformation ground.It is also easy to set up.The platform number that is connected the gas generating unit of the handset on the machine tool 14 can at random be set by control device 13.In addition, raw air groove 11, integrated products groove 12 and control device 13 are not limited to constitute with 1 gas generating unit combination the form of machine tool, also can be with many gas generating units as the GU Generic Unit that is used for turning round together, separate with the gas generating unit and constitute.
As shown in Figure 2, each gas generating unit 10a, 10b, the 10c product groove 3 that possesses the 1st adsorption tank 1 that is filled with oxygen absorbent and the 2nd adsorption tank 2 and store the nitrogen of manufacturing.And then, in the pipe arrangement that these grooves are linked, be provided with the 1st absorption valve (SV1), the 2nd absorption valve (SV2), the 1st air bleeding valve (SV3), the 2nd air bleeding valve (SV4), two equalizing valves (SV5), the 1st outlet valve (SV6), the 2nd outlet valve (SV7) and flow control valve 9.
The raw air of supplying with from raw air groove 11 is directed to the 1st absorption valve (SV1) and the 2nd and adsorbs in the valve (SV2) each of each gas generating unit.The 1st absorption valve (SV1) is connected with the 2nd adsorption tank 2 by pipe arrangement 7 with the 1st adsorption tank the 1, the 2nd absorption valve (SV2) by pipe arrangement 6.Stream by pipe arrangement 6 and pipe arrangement 7 expressions is connected to exhaust outlet 8 via the 1st air bleeding valve (SV3) and the 2nd air bleeding valve (SV4) respectively.The 1st adsorption tank 1 can be communicated with via two equalizing valves (SV5) of upper and lower settings with the 2nd adsorption tank 2.
From 3 pipe arrangements that the 1st adsorption tank 1 is derived 1 is connected with product groove 3 via the 1st outlet valve (SV6).From 3 pipe arrangements that the 2nd adsorption tank 2 is derived 1 is connected with product groove 3 via the 2nd outlet valve (SV7).The 1st adsorption tank 1 and the 2nd adsorption tank 2 interconnect via flow control valve 9.Product groove 3 is connected with nitrogen outlet 19, from supplying with nitrogen via the nitrogen inlet 17 of machine tool 14 to gathering product groove 12 here.
As shown in Figure 1, on raw air groove 11, be provided with the raw air pressure detector P0 that detects the pressure in the groove.On the 1st adsorption tank 1 and the 2nd adsorption tank 2, be respectively arranged with the 1st adsorption tank pressure detector P1, the 2nd adsorption tank pressure detector P2.That gathers that product groove 12 is provided with the pressure that detects in the groove gathers product groove pressure detector P4.From gathering product groove 12 to the stream of product gas outlet 15, be provided with detection from the nitrogen flow detector F of the flow of the product gas that gathers product groove 12 and flow out with detect the oxygen concentration detector OC of the oxygen concentration the product gas that flows out.In addition, in following record, for raw air pressure detector P0, the 1st adsorption tank pressure detector P1, the 2nd adsorption tank pressure detector P2, product groove pressure detector P3 (with reference to Fig. 2) and gather the force value that product groove pressure detector P4 detects, use corresponding identical label P0, P1, P2, P3, P4 to represent.
The output of each detector is imported in the control device 13.In addition, the on-off action of each valve is subjected to control from the valve drive signal that control device 13 is supplied with.Control device 13 is to be undertaken that various setting values, valve drive control and based on the device of the running control of the output of each detector etc. by the common action of CPU, but has omitted diagram for electric wiring.
(action of gas generating unit monomer)
The independent action separately of each gas generating unit 10a, 10b, 10c then, is described with reference to Fig. 2～Fig. 5.In the 1st adsorption tank 1 and the 2nd adsorption tank 2, can by switch each valve alternately supply with the raw air of compression and under high pressure carry out adsorbent absorption absorption action and reduce the release movement that pressure discharges the gas that is adsorbed on the adsorbent.In the following description, the operation that to adsorb action and carry out release movement in the 1st adsorption tank 1 in the 2nd adsorption tank 2 is called the A operation, the operation that to adsorb action and carry out release movement in the 2nd adsorption tank 2 in the 1st adsorption tank 1 is called the B operation, will open equalizing valve (SV5) and makes the pressure of two adsorption tanks become impartial operation to be called C operation (perhaps pressure process).A operation and B operation clip the C operation on one side between two-step alternately carries out on one side, takes out the running of nitrogen or oxygen continuously.
Fig. 2～Fig. 4 represents action in the respectively different operations for the gas generating unit.Fig. 2 represent the 1st adsorption tank 1 for absorption process, the 2nd adsorption tank 2 be in release process state, be the A operation.Fig. 3 represents pressure process.Fig. 4 represent the 1st adsorption tank 1 for release process, the 2nd adsorption tank 2 be in absorption process state, be the B operation.The line that connects each groove etc. is a pipe arrangement, represents the state of gas flow by thick line.In each figure, to the shadow representation open state that valve applies, the valve of not implementing shade is in closed condition.In addition, the state that the shadow representation of each adsorption tank 1,2 and 3 enforcements of product groove is existed nitrogen.
With Fig. 2～Fig. 4, with reference to the pressure distribution shown in Figure 5 and the action that the nitrogen gas generating device of said structure is described constantly of moving.
Curve shown in the P01 of Fig. 5 represents to supply to the raw air pressure in the 1st absorption valve (SV1) and the 2nd absorption valve (SV2).P1～P3 represents respectively from the 1st adsorption tank pressure detector P1, the 2nd adsorption tank pressure detector P2 and the resulting force value of product groove pressure detector P3.SV1, SV2, SV3, SV4, SV5, SV6, SV7 represent to be used for making the valve drive signal of corresponding valve switching respectively.In applying the zone of shade, be by valve drive signal with each valve opened state, be with each valve closing state in other zones.The transverse axis of figure is represented the time, repeats operation on the direction of time shaft as C operation, A operation, C operation, B operation, C operation.The time that is documented in the top of A～C symbol is the duration of each operation.
Operation A among Fig. 5 is an operation shown in Figure 2, carries out absorption process in the 1st adsorption tank 1, carry out release process in the 2nd adsorption tank 2.
In this operation A, the valve drive signal that supplies in the 1st absorption valve (SV1), the 2nd air bleeding valve (SV4), the 1st outlet valve (SV6) is a clearing signal, and other valves are supplied with shutdown signal.In the 1st adsorption tank 1, the pressurization raw air imported in the bottom of the 1st adsorption tank 1 and carry out absorption process.Along with the rising of raw air pressure P 01, the 1st adsorption tank pressure P 1 also rises.Thereupon, from the raw air adsorb oxygen, nitrogen flows out from groove top, imports in the product groove 3 by outlet valve SV6 by oxygen absorbent.Thereupon, product groove pressure P 3 rises.
The 2nd adsorption tank 2 is depressurized by the 2nd air bleeding valve (SV4), and the 2nd adsorption tank pressure P 2 sharply descends.At this moment, by flow control valve 9, will import to the top of the 2nd adsorption tank 2 from the circulation nitrogen that take out at the top of the 1st adsorption tank 1.By these actions, discharge oxygen and exhaust from oxygen absorbent.
Operation C is a pressure process shown in Figure 3.In this operation, equalizing valve (SV5) is open, other valves cut out.Thereby raw air pressure P 01 rises to the pressure of supplying with from raw air inlet 4.The 1st adsorption tank pressure P 1 descends, and the 2nd adsorption tank pressure P 2 rises, and it is impartial that the pressure of two adsorption tanks becomes.This pressure process from absorption process when release process shifts, gas-pressurized be discharged into the energy loss of bringing the atmosphere carry out in order to reduce.That is, the pressure feed of groove that is transferred to release process in the groove that is transferred to absorption process, is reclaimed the roughly pressurization energy of half.
Process B is an operation shown in Figure 4, carries out release process in the 1st adsorption tank 1, carries out absorption process in the 2nd adsorption tank 2.The action of this moment and the action symmetry among the operation A, the 1st adsorption tank 1 is opposite with operation A with the action in the 2nd adsorption tank 2.That is, in process B, the 2nd absorption valve (SV2), the 1st air bleeding valve (SV3), the 2nd outlet valve (SV7) are supplied with clearing signal, other valves are supplied with shutdown signal, carry out the action same, so omit specific description with operation A.
More than, absorption process and release process clip pressure process and alternately carry out in the 1st adsorption tank 1 and the 2nd adsorption tank 2, produce nitrogen continuously.In addition, if proceed absorption process, the oxygen that then is not adsorbed flows out from the groove top, becomes the state that penetrates (broken Over shape ) of the concentration reduction of nitrogen.Thereby the duration of setting operation A or process B is so that occurring switching adsorption tank before this phenomenon.
(running action in the time of gas generating unit 10a, 10b, 10c)
Then, illustrate gas generating unit 10a shown in Figure 1, the action when 10b, 10c turn round simultaneously with reference to Fig. 6～Fig. 9.In each figure, gas generating unit 10a, 10b, 10c recorded and narrated respectively be unit a, unit b, unit c.The action of each valve in the action when Fig. 6 represents to make Duo Tai unit a～c of Fig. 1 to turn round simultaneously, unit a～c constantly and the product groove pressure P 3 of unit a～c and the variation of gathering product groove pressure P 4.Fig. 7 represent unit a～c each valve action constantly and the variation of each the 2nd adsorption tank pressure P 2.Fig. 8 represent unit a～c each valve action constantly and the variation of each the 1st adsorption tank pressure P 1.Fig. 9 represents to supply to the raw air pressure P 01 among unit a～c and the variation of raw air groove pressure P 0.
Independent the action moment and the pressure of unit a～c among each figure change as shown in Figure 5.On the other hand, the control of control device 13 is set at, and makes the moment of A operation, B operation and C operation among switch unit a～c of Fig. 6～shown in Figure 9 be offset (staggering) for each unit a～c with mutual constant duration.This situation was represented with the time interval between the action constantly of each valve among each figure.In addition, its result, (unit is a), the solid line (unit b) and the single-point line (unit c) of fine rule represent with the double dot dash line among each figure in the skew that the pressure of product groove the 3, the 2nd adsorption tank 2 and the 1st adsorption tank 1 changes.
In the example of Fig. 6～shown in Figure 9, will make up the A operation among each unit a～c or be set at 60 seconds the actuation time after B operation and the C operation.Thereby, from by the beginning of the unit a shown in the double dot dash line (C operation+A operation) after 20 seconds, (the C operation+A operation) of the unit b that beginning is represented by fine line, after 20 seconds, beginning is by the unit c of single-point line expression (C operation+A operation) again.Behind 20 seconds of following, beginning is by (the C operation+B operation) of the unit a shown in the double dot dash line, below same, (the C operation+B operation) of repetitive b, (the C operation+B operation) of unit c.
The pressure of representing with heavy line among Fig. 6 that gathers product groove 12 changes the pressure that combines 3 product grooves 3 and changes.The result gets the amplitude suppressing that changes less as can be known.The pressure variation of the raw air groove of representing with heavy line in Fig. 9 in addition, 11 combines the pressure that supplies to the raw air among unit a～c and changes.The result gets the amplitude suppressing that changes less as can be known.
More than, be set at mutually with the constant duration skew by the moment that the operation of unit a～c is switched, can access following such effect.
In each unit, because the gas that manufactures a product off and on, so product gas is stored in the product groove 3 of storage, pressure regulation is that certain pressure is supplied with.Therefore, can only obtain comparing the product gas of very low pressure with the raw air pressure of being supplied with.In order to supply with the product gas of high pressure by transformation adsorption type gas generating device, need the raw air source of high pressure and the product groove of larger capacity.
With respect to this, as present embodiment, switch many gas generating units by switching instant with constant duration with some cycles, in gathering product groove 12 with the sliced time after certain hour is removed with the platform number of gas generating unit of running at interval of supplying products gas at interval, so as among Fig. 6 by shown in the heavy line, the pressure reduction of gathering in the product groove 12 is less, can access the product gas pressure that approaches raw air pressure.
In addition, in device in the past with single gas generating unit, because raw air soakage and pressure change significantly, so the burden of air compressor is bigger, power consumption, oil consumption are risen, and need the watertight aircase of larger capacity between gas generating unit and air compressor in order to reduce fault rate.
With respect to this, by a plurality of gas generating unit 10a, 10b, 10c are provided with shared raw air groove 11, shortened the time interval to gas generating unit base feed air, so as among Fig. 9 by shown in the heavy line, the change of raw air soakage and pressure is less, does not need jumbo watertight aircase.
The platform number of the running among a plurality of gas generating unit 10a, 10b, the 10c can decide according to the result who has suitably made up raw air detector P0, gathered the detected value of product groove pressure detector P4, nitrogen flow detector F and oxygen concentration detector OC.In the case, the detection that can make each checkout gear is input to the structure that determines the running of the platform number that operating numbers, control are determined in the control device 13, by control device 13.
Perhaps, also can make and possess the display that shows raw air detector P0, gathers the detected value of product groove pressure detector P4, nitrogen flow detector F and oxygen concentration detector OC, the structure of the gas generating unit by 13 runnings of manual operation control device.
As the benchmark of platform number decision, be under the situation of benchmark for example with raw air pressure P 0, the low more operating number that increases of force value.Be under the situation of benchmark to gather product groove pressure P 4, the low more operating number that increases of force value.Be under the situation of benchmark with nitrogen flow F, the big more operating number that increases of flow.Be under the situation of benchmark with oxygen concentration OC, the high more operating number that increases of concentration.Under the situation of the output that is used in combination a plurality of detectors because make which detected value priority scheduling, according to the running actual state of environment and optimal setting difference, set so wait according to the result of trial run.
More than, by output valve the gas generating unit for the required platform number of the setting value that obtains operating condition is turned round, even the product gas amount that consumes increase and decrease also can easily be carried out economical running according to each detector.
In addition, preferably make the structure that possesses the contravariant air compressor that is used for compressing raw air, controls the ability of contravariant air compressor by control device 13 corresponding to the operating number of gas generating unit 10a, 10b, 10c.Thus, can avoid excessively carrying out with respect to operating number the situation of the compression of raw air, be effective for economical running.
Industrial applicibility
According to transformation adsorption type gas generating device of the present invention, can make selectively the gas generating unit running of required number of units, can carry out the economical running corresponding to the increase and decrease of the gas product scale of construction that consumes. And the pressure decreased that gathers in the product groove is less, can stably obtain the product gas pressure close to raw air pressure, has practicality as the system that supplies with nitrogen or oxygen.
Claims (6)
1. a transformation adsorption type gas generating device is characterized in that,
Possess:
The the 1st and the 2nd adsorption tank is filled with adsorbent;
The the 1st and the 2nd absorption valve will open and close respectively to the stream of the above-mentioned the 1st and the 2nd adsorption tank importing raw air;
The product groove stores the product gas that goes out from the above-mentioned raw materials air separation in the above-mentioned the 1st and the 2nd adsorption tank;
The the 1st and the 2nd air bleeding valve, will from the above-mentioned the 1st and the exhaust of the 2nd adsorption tank open and close respectively with stream;
Equalizing valve will make all pressures passage opening/closing that is communicated with between the above-mentioned the 1st and the 2nd adsorption tank;
Reflux and use stream, will be communicated with between the above-mentioned the 1st and the 2nd adsorption tank via flow control valve;
The the 1st and the 2nd outlet valve opens and closes the stream between the above-mentioned the 1st and the 2nd adsorption tank and the said goods groove respectively; And,
Control device, the valve drive signal of the switching of above-mentioned each valve of supply control;
By switching above-mentioned each valve, can in the above-mentioned the 1st and the 2nd adsorption tank, alternately supply with compressed raw air and under high pressure carry out above-mentioned adsorbent absorption absorption action and pressure is reduced and release movement that the gas that is adsorbed in the above-mentioned adsorbent is discharged;
Above-mentioned control device is controlled at and adsorbs action in above-mentioned the 1st adsorption tank and carry out the A operation of release movement in above-mentioned the 2nd adsorption tank, adsorb action and carry out the B operation of release movement and above-mentioned equalizing valve is open and make the pressure of above-mentioned two adsorption tanks become impartial pressure process in above-mentioned the 1st adsorption tank in above-mentioned the 2nd adsorption tank, so that when above-mentioned pressure process being clipped between above-mentioned A operation and above-mentioned this two-step of B operation, alternately carry out this two-step;
Wherein, the above-mentioned the 1st and the 2nd adsorption tank, the said goods groove, the above-mentioned the 1st and the 2nd absorption valve, the above-mentioned the 1st and the 2nd air bleeding valve, above-mentioned equalizing valve, above-mentioned backflow constitute the gas generating unit with stream and the above-mentioned the 1st and the 2nd outlet valve;
This transformation adsorption type gas generating device comprises many above-mentioned gas generating units;
Also possess: the raw air source, above-mentioned a plurality of gas generating units are supplied with the above-mentioned raw materials air via the above-mentioned the 1st and the 2nd absorption valve;
Gather the product groove, gather the said goods gas in each the product groove that is stored in above-mentioned many gas generating units;
The raw air pressure detector, the pressure in detection above-mentioned raw materials air source;
The product gas stream amount detector detects the flow that gathers the product gas that the product concentrated flow goes out from above-mentioned;
The oxygen concentration detector detects the oxygen concentration that gathers the said goods gas that the product concentrated flow goes out from above-mentioned; And,
Gather product groove pressure detector, detect the above-mentioned pressure that gathers in the product groove;
1 above-mentioned gas generating unit, above-mentionedly gather the product groove and above-mentioned control device one constitutes machine tool;
Other above-mentioned gas generating units independently constitute respectively as handset and can be connected removably with respect to above-mentioned machine tool;
Above-mentioned control device is supplied with the valve drive signal of the switching of controlling above-mentioned each valve in above-mentioned many gas generating units and is controlled running and change the platform number of the running in above-mentioned many gas generating units according to the detected value of above-mentioned each detector;
And, when making the running of many above-mentioned gas generating units, control so that switch above-mentioned A operation, above-mentioned B operation and above-mentioned pressure process the time be engraved in each of above-mentioned each gas generating unit and be offset with constant duration.
2. transformation adsorption type gas generating device as claimed in claim 1 is characterized in that, possesses the raw air groove that stores the above-mentioned raw materials air and supply with as above-mentioned raw materials air source.
3. transformation adsorption type gas generating device as claimed in claim 1 is characterized in that, above-mentioned machine tool also possesses the raw air groove as above-mentioned raw materials air source that stores the above-mentioned raw materials air and supply with.
4. as each described transformation adsorption type gas generating device in the claim 1～3, it is characterized in that,
Also possess:
Display, the detected value of above-mentioned each detector of demonstration;
Above-mentioned control device can be by manual operation running the platform number of above-mentioned gas generating unit.
5. as each described transformation adsorption type gas generating device in the claim 1～3, it is characterized in that,
Possesses the contravariant air compressor that is used for the compression of above-mentioned raw materials air;
Above-mentioned control device is controlled the ability of above-mentioned contravariant air compressor according to the operating number of above-mentioned gas generating unit.
6. transformation adsorption type gas generating device as claimed in claim 4 is characterized in that,
Possesses the contravariant air compressor that is used for the compression of above-mentioned raw materials air;
Above-mentioned control device is controlled the ability of above-mentioned contravariant air compressor according to the operating number of above-mentioned gas generating unit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006349272A JP4365403B2 (en) | 2006-12-26 | 2006-12-26 | Pressure swing adsorption gas generator |
| JP349272/2006 | 2006-12-26 |
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| Publication Number | Publication Date |
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| CN101209392A CN101209392A (en) | 2008-07-02 |
| CN101209392B true CN101209392B (en) | 2011-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007100864189A Active CN101209392B (en) | 2006-12-26 | 2007-03-08 | Transformation adsorption type gas generating device |
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| Country | Link |
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| JP (1) | JP4365403B2 (en) |
| CN (1) | CN101209392B (en) |
| HK (1) | HK1114045A1 (en) |
| TW (1) | TW200827015A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010075781A (en) * | 2008-09-24 | 2010-04-08 | Kofurotsuku Kk | Pressure swing adsorption device |
| JP4979664B2 (en) * | 2008-09-29 | 2012-07-18 | 株式会社日立産機システム | Gas separation device |
| CN104058371B (en) * | 2014-07-08 | 2016-05-18 | 阳谷祥光铜业有限公司 | Pressure-variable adsorption gas system processed and method thereof |
| DE212016000112U1 (en) * | 2015-06-12 | 2018-03-06 | Atlas Copco Airpower, Naamloze Vennootschap | Gas generator designed to control an adsorption phase |
| JP7250293B2 (en) * | 2018-04-05 | 2023-04-03 | ピュリテク カンパニー リミテッド | modular oxygen generator |
| JP7013338B2 (en) * | 2018-06-29 | 2022-02-15 | 大陽日酸株式会社 | Pressure fluctuation adsorption device |
| JP7236069B2 (en) * | 2018-07-27 | 2023-03-09 | コフロック株式会社 | Control method for pressure swing adsorption device and pressure swing adsorption device |
| JP7161725B2 (en) * | 2018-08-30 | 2022-10-27 | 北越工業株式会社 | Operation control method of compressor for gas generator, compressor for gas generator, and gas generator provided with the compressor |
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| CN1139586A (en) * | 1995-03-15 | 1997-01-08 | 美国Boc氧气集团有限公司 | Dynamic washing controlled pressure-change absorption method |
| CN2290392Y (en) * | 1997-04-02 | 1998-09-09 | 温州瑞气机电有限公司 | Pressure changing absorbing gas separating appts. |
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2006
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- 2007-03-08 CN CN2007100864189A patent/CN101209392B/en active Active
- 2007-04-26 TW TW96114717A patent/TW200827015A/en unknown
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2008
- 2008-08-29 HK HK08109621.0A patent/HK1114045A1/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1139586A (en) * | 1995-03-15 | 1997-01-08 | 美国Boc氧气集团有限公司 | Dynamic washing controlled pressure-change absorption method |
| CN2290392Y (en) * | 1997-04-02 | 1998-09-09 | 温州瑞气机电有限公司 | Pressure changing absorbing gas separating appts. |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
|---|---|
| JP2008155168A (en) | 2008-07-10 |
| HK1114045A1 (en) | 2008-10-24 |
| CN101209392A (en) | 2008-07-02 |
| TW200827015A (en) | 2008-07-01 |
| JP4365403B2 (en) | 2009-11-18 |
| TWI343829B (en) | 2011-06-21 |
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