CN206045732U - It is a kind of to press component and PSA devices - Google Patents

Abstract

This utility model discloses a kind of pressure component and PSA devices, wherein, press component to include balance pipe and sequencing valve, the balance pipe is provided with the sequencing valve, restriction orifice pad is provided between the sequencing valve and the balance pipe.This utility model is by arranging restriction orifice pad between sequencing valve and balance pipe, flow velocity when PSA devices reduce pressure can be slowed down, air-flow is reduced to pipeline and the impulsive force of adsorbent, extends the service life of PSA devices, it is ensured that the product Jing after the process of PSA devices has stable yield and purity.

Description

It is a kind of to press component and PSA devices

Technical field

This utility model is related to adsorption column pressure regulation technology field, and in particular to a kind of for adjusting adsorption column pressure Press component and the PSA devices of component are pressed comprising this.

Background technology

The lowest calibre for being applied to the sequencing valve of PSA devices at this stage is DN40, for the caliber size phase with sequencing valve Matching, during design, the caliber of pipeline used is also DN40.In real work, one, two, three pressure-equalizing passageway mistakes of the PSA devices Greatly, when can cause to press, flow velocity is too fast, so as to cause adsorbent to produce boiling, accelerates absorbent atomizing, affects adsorbed gas Yield and purity.

In order to solve the above problems, staff is improved to above-mentioned PSA devices, i.e., one of configuration before sequencing valve Stop valve, controls flow by the aperture of the stop valve, but this operation is difficult to hold quasi- aperture in actual production, and right The impact of the sealing surface of stop valve is larger, easily causes internal hemorrhage due to trauma.

Utility model content

A purpose of the present utility model is to provide one kind to press component, can reduce air-flow to pipeline and absorption when pressing The impulsive force of agent.

Another purpose of the present utility model is to provide a kind of PSA devices, the product yield processed through which and purity It is stable.

It is that, up to this purpose, this utility model is employed the following technical solutions：

On the one hand, there is provided one kind presses component, including balance pipe and sequencing valve, the balance pipe to be provided with described program control Valve, is provided with restriction orifice pad between the sequencing valve and the balance pipe.

On the other hand, there is provided a kind of PSA devices, at least including two adsorption towers and some pressure groups as above It is provided with described at least two between the upper end of part, the upper end of one of them adsorption tower and another adsorption tower and presses It is provided between the lower end of component, the lower end of one of them adsorption tower and another adsorption tower described at least two Pressure component.

The beneficial effects of the utility model：This utility model is by arranging restriction orifice pad between sequencing valve and balance pipe Piece, can slow down flow velocity when PSA devices reduce pressure, and reduce air-flow to pipeline and the impulsive force of adsorbent, extend the use of PSA devices Life-span, it is ensured that the product Jing after the process of PSA devices has stable yield and purity.

Description of the drawings

Fig. 1 is the structural representation for pressing component described in one embodiment of this utility model.

Fig. 2 is the structural representation for pressing component described in another embodiment of this utility model.

Fig. 3 is the structural representation of restriction orifice pad described in the utility model and sealing ring.

Fig. 4 is the A-A of Fig. 3 to sectional view.

Process charts of the Fig. 5 for PSA devices.

In Fig. 1 to Fig. 4：

100th, balance pipe；200th, sequencing valve；300th, restriction orifice pad；400th, sealing ring；500th, stop valve.

Specific embodiment

The technical solution of the utility model is further illustrated below in conjunction with the accompanying drawings and by specific embodiment.

In this utility model, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying phase To importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be with Express or implicitly include one or more this feature.

In description of the present utility model, unless otherwise clearly defined and limited, term " connection " should be interpreted broadly, For example, it may be fixedly connected, or be detachably connected, or it is integral；Can be mechanically connected；It can be direct phase Even, it is also possible to be indirectly connected to by intermediary, can be that the connection of two components interiors or the interaction of two parts are closed System.For the ordinary skill in the art, can understand that above-mentioned term is concrete in this utility model with concrete condition Implication.

As shown in figure 1, present embodiments providing one kind presses component, including balance pipe 100 and sequencing valve 200, it is described equal Pressure pipe 100 is provided with the sequencing valve 200, and restriction orifice pad is provided between the sequencing valve 200 and the balance pipe 100 300.The present embodiment can slow down PSA devices and subtract by restriction orifice pad 300 is arranged between sequencing valve 200 and balance pipe 100 Flow velocity during pressure, reduces air-flow to pipeline and the impulsive force of adsorbent, extends the service life of PSA devices, it is ensured that Jing PSA devices Product after process has stable yield and purity.

Specifically, along the flow direction of gas, the sequencing valve 200 has for connecting the balance pipe 100 first to connect End and the second connection end, the restriction orifice pad 300 are arranged between second connection end and the balance pipe 100, with Play more preferable buffering effect.

As shown in Figure 3 and Figure 4, the pressure component of the present embodiment also includes sealing ring 400, and the sealing ring 400 passes through method Orchid is installed between second connection end and the balance pipe 100, it is preferable that sealing ring 400 is installed on current limliting by flange 300 side of orifice plate pad, to guarantee that sequencing valve 200 and the junction of balance pipe 100 have good sealing.

The sealing ring 400 of the present embodiment is metal o-ring, and its bearing capacity is strong.

Used as this utility model preferred embodiment, the endoporus both sides of the sealing ring 400 set chamfering respectively, wherein, Metering function is played away from the side chamfering of restriction orifice pad 300, the opposite side chamfering near restriction orifice pad 300 plays sealing Effect.

Specifically, the chamfering is 30 °～60 °, preferably 45 °, and two chamferings is equal in magnitude, so that sealing Circle 400 has good sealing effectiveness and current limitation effect.

In the present embodiment, the thickness of the sealing ring 400 is not less than 3mm, to ensure which has enough bearing capacities.

Used as another embodiment of this utility model, which is additionally arranged stop valve 500 on the basis of above-described embodiment.Such as Fig. 2 Shown, be connected with first connection end one section of the balance pipe 100 is provided with stop valve 500.Can be with by stop valve 500 Voltage equalizing is improved further.

Embodiment of the present utility model also provides a kind of PSA devices, at least including two adsorption towers and it is some as described above Pressure component described in embodiment, is arranged between the upper end of one of them adsorption tower and the upper end of another adsorption tower Have to press described at least two and set between the lower end of component, the lower end of one of them adsorption tower and another adsorption tower It is equipped with described at least two and presses component.In the PSA devices, press the setting of component make the pressure between two adsorption towers Keep in balance.

Specifically, PSA devices are included along deflation surge tank V105, equalizer tank V104, hydrogen gas buffer V103, six absorption Tower T201A-F and it is some press component, each adsorption tower upper end is set side by side with five and described presses component, and any two In adsorption tower, of one of adsorption tower upper end presses component and pressure component of another adsorption tower upper end to select Property connection；Each adsorption tower lower end be set up in parallel two it is described press component, and any two adsorption tower, one of absorption One of tower lower end presses component and pressure component selectivity of another adsorption tower lower end to connect；

Wherein, adsorption tower T201A (abbreviation A towers) upper end be set side by side with sequencing valve KV106A, KV104A, KV105A, KV107A, KV102A, lower end are set side by side with sequencing valve KV101A, KV103A；Adsorption tower T201B (abbreviation B towers) upper end is arranged side by side Be provided with sequencing valve KV106B, KV104B, KV105B, KV107B, KV102B, lower end be set side by side with sequencing valve KV101B, KV103B；Adsorption tower T201C (abbreviation C towers) upper end be set side by side with sequencing valve KV106C, KV104C, KV105C, KV107C, KV102C, lower end are set side by side with sequencing valve KV101C, KV103C；Adsorption tower T201D (abbreviation D towers) upper end is set side by side with journey Control valve KV106D, KV104D, KV105D, KV107D, KV102D, lower end is set side by side with sequencing valve KV101D, KV103D；Absorption Tower T201E (abbreviation E towers) upper end is set side by side with sequencing valve KV106E, KV104E, KV105E, KV107E, KV102E, and lower end is simultaneously Row are provided with sequencing valve KV10E, KV103E；Adsorption tower T201F (abbreviation F towers) upper end be set side by side with sequencing valve KV106F, KV104F, KV105F, KV107F, KV102F, lower end are set side by side with sequencing valve KV101F, KV103F.

It is described to pass through pressure component (sequencing valve KV110) and six adsorption towers along deflation surge tank V105 Upper end selectivity connection；

The adsorption tower upper end is also provided with by one that two automatic regulating valves HV101, PV103 are described with one to press The pipeline of component (sequencing valve KV109) is connected with the hydrogen gas buffer V103, the pipeline and each adsorption tower upper end The connection of component selectivity, two described automatic regulating valve HV101, PV103 is pressed to be located at the pressure component (sequencing valve respectively KV109 two ends)；

The adsorption tower upper end is also connected with the equalizer tank V104 by a pipeline for being provided with automatic regulating valve PV104 Connect, the pipeline is also set side by side with a bypass, the bypass is provided with unidirectional bypass valve of the gas flow towards the balance pipe；

The adsorption tower lower end is also provided with a pipeline for pressing component (sequencing valve KV108) and solution by one Air suction main selectivity is connected, and the pipeline is connected with the pressure component selectivity of each adsorption tower lower end, and the pipeline is also simultaneously Row are provided with a bypass, and the bypass is provided with bypass valve.

Component of pressing in above-mentioned PSA devices is replaced with the symbol of corresponding sequencing valve, and current limiting is installed in sequencing valve Orifice plate pad and sealing ring.

Below by taking the technological process of the PSA devices shown in Fig. 5 as an example, the scheme of the present embodiment is further described. One of adsorption tower state all the time in absorption, its technical process is by adsorbing, five drop pressures, along putting, inverse put, punching Wash, finally the step such as boosting is constituted for five boost pressures and product, its specific embodiment is as follows：

Step sequence 1：Absorption

Unstripped gas Jing sequencing valves KV101A enters PSA adsorption tower T101A (abbreviation A towers, similarly hereinafter), wherein in addition to h 2 miscellaneous Matter component is adsorbed successively by the various adsorbents loaded in A towers, obtains product hydrogen of the purity more than 99.0%, Jing sequencing valves KV102A is discharged.Most of hydrogen sends battery limit (BL) Jing after adsorption column pressure regulating valve PV103 voltage stabilizing, and small part hydrogen is by program control After valve KV109, the product gas for B towers are boosted.With absorption carrying out, when impurity forward (i.e.：Absorption forward position) rise to When exporting close to adsorbent bed, KV101A, KV102A are closed, stop absorption.At this moment, adsorb and also stay between forward position and adsorbent bed outlet There is the adsorbent of one section of unadsorbed saturation, referred to as reserve section.

Step sequence 2：One down pressure

After the completion of adsorption process, sequencing valve KV106A and KV106C are opened, the hydrogen of elevated pressures in A towers is put into just The two C towers for rising are completed, till the pressure of two tower of A, C is of substantially equal.This process is not only pressure reduction, and The hydrogen in A tower bed dead spaces is reclaimed.The absorption forward position of A towers will continue to elapse forward in this course, but reach not yet To outlet.

Step sequence 3：Two down pressure

After the completion of one down process, sequencing valve KV104A and KV104D are opened, the hydrogen of elevated pressures in A towers is put into The three D towers for rising have been completed just, till the pressure of two tower of A, D is of substantially equal.It is extremely empty that this process continues recovery A tower beds Interior hydrogen, while the absorption forward position of A towers will also continue to elapse forward, but still not up to exports.

Step sequence 4：Three equal blood pressure lowerings

After the completion of two down process, continue to open sequencing valve KV104A and KV104E, by the hydrogen of elevated pressures in A towers It is put into and just completes the four E towers for rising, till the pressure of two tower of A, E is of substantially equal.This process continues to reclaim A tower beds Hydrogen in dead space, while the absorption forward position of A towers will also continue to elapse forward, but still not up to exports.

Step sequence 5：Four equal blood pressure lowerings

After the completion of three drop process, sequencing valve KV105A, KV110 are opened, the hydrogen of elevated pressures in A towers is put into Store in pressure tank V104, till pressure is of substantially equal.This process continues to reclaim the hydrogen in A tower bed dead spaces Gas, while the absorption forward position of A towers will also continue to elapse forward, but still not up to exports.

Step sequence 6：Five equal blood pressure lowerings

Adsorption tower opens sequencing valve KV105A and KV105F, by the hydrogen of elevated pressures in A towers after four equal blood pressure lowerings terminate It is put into and just completes the F towers for rinsing regeneration, till the pressure of two tower of A, F is of substantially equal.This process continues to reclaim A tower beds Hydrogen in layer dead space, while the absorption forward position of A towers will also continue to elapse forward, but still not up to exports.

Step sequence 7：It is suitable to put

Reduced pressure along absorption direction, opened sequencing valve KV107A Jing PV104, decompression hydrogen out is put into into suitable putting Store in gas surge tank V105, absorption forward position continues to elapse forward, and reaches outlet.

Step sequence 8：Inverse put

Complete continuous along after putting decompression process, the absorption forward position of A towers has basically reached bed outlet.At this moment open A pressure towers are down to below 0.05MPa.G against absorption direction by KV103A, and now adsorbed impurity starts from adsorbent Desorb.

Step sequence 9：Rinse desorbing

After inverse put terminates, while open program-controlled valve KV103A and KV108 and connect along deflation surge tank V105, using suitable The gas of storage is rinsed from top to bottom to adsorption tower in deflation surge tank, so as to reduce the partial pressure of adsorbing contaminant, at this moment by The impurity of absorption is desorbed in a large number.

Step sequence 10：Five boost

After completing to rinse desorbing, while opening sequencing valve KV105A and KV105B, A towers are communicated with B towers, using in B towers Gas first time boosting is carried out to A towers, till two pressure towers are of substantially equal, make A towers complete five and rise, at the same reclaim Hydrogen in B tower bed dead spaces.

Step sequence 11：Four boosting complete five boost after, while open sequencing valve KV105A and KV110, by adsorption tower A with Equalizer tank is connected, and is carried out second boosting to A towers using the gas in equalizer tank V104, until two pressure towers are of substantially equal is Only, make A towers complete four to rise.

Step sequence 12：Three boost

Complete four boost after, while open sequencing valve KV104A and KV104C, A towers are connected with C towers, using in C towers Gas third time boosting is carried out to A towers, till two pressure towers are of substantially equal, make A towers complete three and rise, at the same reclaim Hydrogen in C tower bed dead spaces.

Step sequence 13：Two boost

Complete three boost after, while open sequencing valve KV104A and KV104D, A towers are communicated with D towers, using in D towers Gas A towers are carried out the 4th time boosting, till two pressure towers are of substantially equal, make A towers complete two and rise, at the same reclaim Hydrogen in E tower bed dead spaces.

Step sequence 14：One boosts

After the completion of two liter process, sequencing valve KV106A and KV106E are opened, has just been completed in the E towers of adsorption process The hydrogen of elevated pressures is put into and just completes the two A towers for rising, till the pressure of two towers is of substantially equal.This process is reclaimed Hydrogen in E tower bed dead spaces, and make A towers continue to obtain the 5th boosting.

Step sequence 15：Product gas boost process

After five boost pressure processes, adsorption column pressure has been risen to close to adsorptive pressure.At this moment open sequencing valve A pressure towers are risen to adsorptive pressure by KV106A, KV109, Jing HV101 automatic valve product hydrogen.Jing after this process, absorption Tower just completes whole regenerative process, is that absorption is got ready next time.

So, A towers just complete a complete cyclic process, can enter sorption cycle next time again.

Can see from technique step sequence table：Six adsorption towers of PSA hydrogen purifications part technique step sequence be it is identical, Simply stagger in the run time of each step sequence an adsorption time successively, and being so achieved that has a tower to be in adsorption-like all the time State, in addition six towers be respectively at different reproduced state, it is ensured that unstripped gas is continuously separated and purification.

Six adsorption towers alternately more than absorption, regenerative operation (have an adsorption tower all the time in adsorbed state, its Different phase of the five remaining adsorption towers in regeneration) it is capable of achieving being continuously separated and purification for gas.

Using the present embodiment PSA devices can slowing device press when flow velocity, reduce air-flow to pipeline and adsorbent Impulsive force, extends its service life, it is ensured that the yield and purity of product is stable；The service life of sequencing valve can be extended, extend dress The time between overhauls(TBO) put, it is ensured that device long-term operation；It is not required to increase cost.

In the description of this specification, the description of reference term " preferred embodiment " etc. mean with reference to the embodiment or Specific features, structure, material or the feature that example is described is contained at least one embodiment of the present utility model or example. In this manual, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.And, description Specific features, structure, material or feature can be tied in one or more any embodiment or example in an appropriate manner Close.

Above example is only used for illustrating detailed protocol of the present utility model that this utility model is not limited to above-mentioned enforcement Example, that is, do not mean that this utility model has to rely on above-described embodiment and could implement.Person of ordinary skill in the field should Understand, to any improvement of the present utility model, within the scope of all falling within protection domain of the present utility model and disclosure.

Claims (10)

1. one kind presses component, it is characterised in that including balance pipe and sequencing valve, and the balance pipe is provided with the sequencing valve, Restriction orifice pad is provided between the sequencing valve and the balance pipe.

2. it is according to claim 1 to press component, it is characterised in that along the flow direction of fluid, the sequencing valve has to be used for Connect first connection end and the second connection end of the balance pipe, the restriction orifice pad be arranged at second connection end with Between the balance pipe.

3. according to claim 2 to press component, it is characterised in that also including sealing ring, the sealing ring passes through flange It is installed between second connection end and the balance pipe.

4. it is according to claim 3 to press component, it is characterised in that the sealing ring is metal o-ring.

5. it is according to claim 4 to press component, it is characterised in that the endoporus both sides of the sealing ring set chamfering respectively.

6. it is according to claim 5 to press component, it is characterised in that the chamfering is 30 °～60 °, and is fallen described in two Angle it is equal in magnitude.

7. it is according to claim 3 to press component, it is characterised in that the thickness of the sealing ring is not less than 3mm.

8. it is according to claim 2 to press component, it is characterised in that the balance pipe is connected with first connection end One section is provided with stop valve.

9. a kind of PSA devices, it is characterised in that at least including two adsorption towers and some such as any one of claim 1 to 8 institute The pressure component stated, is provided with least two between the upper end of one of them adsorption tower and the upper end of another adsorption tower It is individual it is described press component, be provided with least between the lower end of the lower end of one of them adsorption tower and another adsorption tower Two described to press component.

10. PSA devices according to claim 9, it is characterised in that include along deflation surge tank, equalizer tank, hydrogen buffering Tank, six adsorption towers and it is some press component, each adsorption tower upper end be set side by side with five it is described press component, and arbitrarily In two adsorption towers, one of one of adsorption tower upper end presses component and one of another adsorption tower upper end is pressed component Selectivity is connected；Each adsorption tower lower end be set up in parallel two it is described press component, and any two adsorption tower, one of them One of adsorption tower lower end presses component and pressure component selectivity of another adsorption tower lower end to connect；

It is described to be connected with six adsorption tower upper end selectivitys by pressure component along deflation surge tank；

The adsorption tower upper end is also provided with two automatic regulating valves and a pipeline for pressing component and institute by one Hydrogen gas buffer connection is stated, the pipeline is connected with the pressure component selectivity of each adsorption tower upper end, two described automatic Regulating valve is located at the two ends for pressing component respectively；

The adsorption tower upper end is also connected with the equalizer tank by a pipeline for being provided with automatic regulating valve, and the pipeline is also simultaneously Row are provided with a bypass, and the bypass is provided with unidirectional bypass valve of the gas flow towards the balance pipe；

The adsorption tower lower end is also provided with a pipeline for pressing component by one and is connected with stripping gas house steward selectivity Logical, the pipeline is connected with the pressure component selectivity of each adsorption tower lower end, and the pipeline is also set side by side with a bypass, should Bypass is provided with bypass valve.