CN209034046U - A kind of modified air separation unit molecular sieve system - Google Patents
A kind of modified air separation unit molecular sieve system Download PDFInfo
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- CN209034046U CN209034046U CN201821288679.9U CN201821288679U CN209034046U CN 209034046 U CN209034046 U CN 209034046U CN 201821288679 U CN201821288679 U CN 201821288679U CN 209034046 U CN209034046 U CN 209034046U
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Abstract
The utility model discloses a kind of modified air separation unit molecular sieve systems, belong to space division voltage stabilizing technique, the electric control valve including automatic transfer valve and system pipeline middle position on two-stage molecular sieve adsorber, system pipeline, system pipeline；Also it is additionally arranged the gas pipeline drawn from nitrogen spherical tank；There are two the first end and second ends that bypass line is separately connected electric control valve V1209 for gas pipeline setting；Automatic transfer valve V1209A is connected in the bypass line of the first end of the gas pipeline connection electric control valve V1209 added；Automatic transfer valve V1209B is connected in the bypass line of the second end of the gas pipeline connection electric control valve V1209 added.The utility model provides a kind of modified air separation unit molecular sieve system, when the equal crush-cutting of molecular sieve changes, supplements tolerance using high pressure nitrogen, guarantees that the pressure of fractionating column without fluctuation, keeps space division system stable conditions.
Description
Technical field
The utility model belongs to space division voltage stabilizing technique more particularly to a kind of modified air separation unit molecular sieve system.
Background technique
It is to realize space division system general safety, steady that the stable gas pressure of molecular sieve system in large air separation plant, fluctuation be small
Fixed, efficient operation basis.It is even running in order to guarantee whole system that molecular sieve adsorber first will be pressed when switching.Molecule
If sieve absorber voltage un-balance in switching in order to fill the inner space of container can make the air mass flow in system
Fluctuated suddenly with pressure, molecular sieve adsorber will receive the intense impact of gas, make barrier deformation even damage, aluminium glue and
Molecular sieve also mutually rubs because of being hit extruding, enters adsorbent internal channel after generating dust particle, reduces adsorption efficiency,
It even will have a direct impact on ar system operating condition, lead to the generation of the technology accidents such as nitrogen plug.
Utility model content
The utility model technical issues that need to address are to provide a kind of modified air separation unit molecular sieve system, in molecule
When sieve absorber is pressed before switching over, using high pressure nitrogen supplement molecular sieve adsorber pressure gas flow, reduce molecular sieve
Air pressure fluctuation when absorber switches guarantees the pressure stabilizing switching of adjacent molecule sieve absorber in space division system.
In order to solve the above technical problems, the technical scheme adopted by the utility model is:
A kind of modified air separation unit molecular sieve system, including two-stage molecular sieve adsorber MS1201 and MS1202, system
Automatic transfer valve V1203, V1204, V1205, V1206's and system pipeline middle position on pipeline, system pipeline is electronic
Regulating valve V1209；Molecular sieve adsorber MS1201 output end connects the first end of automatic transfer valve V1203, automatic transfer valve
The first end of V1205 and the first end of electric control valve V1209；Molecular sieve adsorber MS1202 output end connects automatic transfer valve
The second end of the first end of V1204, the first end of automatic transfer valve V1206 and electric control valve V1209；Automatic transfer valve
The second end of V1205 is connected with the second end of automatic transfer valve V1206；The second end and automatic switchover of automatic transfer valve V1203
Output end is used as after the second end connection of valve V1204；Also it is additionally arranged the gas pipeline drawn from nitrogen spherical tank；Gas pipeline setting
There are two the first end and second ends that bypass line is separately connected electric control valve V1209；The gas pipeline connection added
Automatic transfer valve V1209A is connected in the bypass line of the first end of electric control valve V1209；The gas pipeline added
It connects and is connected with automatic transfer valve V1209B in the bypass line of the second end of electric control valve V1209.
Technical solutions of the utility model further improvement lies in that: it is described add gas pipeline connection electric control valve
In the bypass line of the first end of V1209, the first end and automatic transfer valve V1209A of electric control valve V1209, which is also connected with, is cut
Only valve V1209C；In the bypass line of the second end of the gas pipeline connection electric control valve V1209 added, motorized adjustment
The one or two end of valve V1209 and automatic transfer valve V1209B are also connected with shut-off valve V1209D.
Technical solutions of the utility model further improvement lies in that: shut-off valve V1209C and shut-off valve V1209D are maintained a normally open
State.
By adopting the above-described technical solution, the technological progress that the utility model obtains is:
Modified air separation unit molecular sieve system provided by the utility model is the new aerating in original molecular sieve system
Body pipeline draws a gas pipeline from nitrogen spherical tank and is connected to the electric control valve as maincenter between two molecular sieve adsorbers
On the gas pipeline at place, while two bypass lines are set in the gas pipeline of this external introducing, in the electric adjustable of maincenter
The section both ends valve V1209 increase a shut-off valve and an automatic transfer valve is connect with the gas pipeline of external introducing, realize
When the equal crush-cutting of molecular sieve adsorber changes, using outer access high pressure nitrogen supplement tolerance, be replenished in time need to mention it is anticyclonic
The pressure gas of molecular sieve adsorber, air pressure fluctuation when reducing molecular sieve adsorber switching, guarantees in space division system adjacent point
The pressure stabilizing switching of son sieve absorber.The actual augmentation of this modified air separation unit molecular sieve system is at low cost, significant effect, greatly
The job stability and service life of molecular sieve system in air separation plant are improved greatly.
In the utility model embodiment, the setting of shut-off valve V1209C and shut-off valve V1209D are further increased new
Increase safety, the practicability of gas piping.
Using the modified air separation unit molecular sieve system of the utility model, molecular sieve when molecular sieve system is pressed is reduced
Between absorber and the pressure oscillation of fractionating column, it can be achieved that molecular sieve adsorber safe switching, increasing molecular sieve system makes
Continuity improves air separation plant overall operation efficiency, while improving space division system overall stability, prevents the things such as nitrogen plug
Therefore generation, improve production security.
Detailed description of the invention
Fig. 1 is the utility model structure diagram.
Specific embodiment
The utility model is described in further details below with reference to embodiment:
As shown in Figure 1, a kind of modified air separation unit molecular sieve system, including two-stage molecular sieve adsorber MS1201 and
MS1202, system pipeline, among automatic transfer valve V1203, V1204, V1205, V1206 and system pipeline on system pipeline
The electric control valve V1209 of position；Molecular sieve adsorber MS1201 output end connect automatic transfer valve V1203 first end, from
The first end of dynamic switching valve V1205 and the first end of electric control valve V1209；The connection of molecular sieve adsorber MS1202 output end is certainly
First end, the second end of the first end of automatic transfer valve V1206 and electric control valve V1209 of dynamic switching valve V1204；Automatically it cuts
The second end for changing valve V1205 is connected with the second end of automatic transfer valve V1206；The second end of automatic transfer valve V1203 and automatic
Output end is used as after the second end connection of switching valve V1204；Also it is additionally arranged the gas pipeline drawn from nitrogen spherical tank；Gas pipeline
Bypass line is separately connected the first end and second end of electric control valve V1209 there are two being arranged；The gas pipeline added
It connects and is connected with automatic transfer valve V1209A in the bypass line of the first end of electric control valve V1209；The gas added
Automatic transfer valve V1209B is connected in the bypass line of the second end of pipeline connection electric control valve V1209.
In the bypass line of the first end of the gas pipeline connection electric control valve V1209 added, electric control valve
The first end and automatic transfer valve V1209A of V1209 is also connected with shut-off valve V1209C；The gas pipeline connection electricity added
In the bypass line of the second end of dynamic regulating valve V1209, the one or two end of electric control valve V1209 and automatic transfer valve V1209B
It is also connected with shut-off valve V1209D.Shut-off valve V1209C and shut-off valve V1209D can also be butterfly valve.
Further, shut-off valve V1209C and shut-off valve V1209D maintains a normally open state, therefore shut-off valve V1209C and cut-off
Valve V1209D is the maintenance service valve of automatic transfer valve V1209A Yu automatic transfer valve V1209B respectively；Only work as automatic transfer valve
V1209A or automatic transfer valve V1209B failure needs repairing when renewing, and just needs shut-off valve V1209C or shut-off valve
V1209D closure.
Specifically, molecular sieve adsorber MS1201 and molecular sieve adsorber MS1202 are equal in the utility model embodiment
Pressure, electric control valve V1209 valve is slowly opened under DCS system control, if molecular sieve adsorber MS1201 side air pressure is inclined
Low, automatic transfer valve V1209A will also be opened simultaneously, and shut-off valve V1209C is constantly in normally open, automatic transfer valve V1209B
It remains closed；It is rapid using the high pressure nitrogen in external gas pipeline by automatic transfer valve V1209A and shut-off valve V1209C
The side molecular sieve adsorber MS1201 tolerance is supplemented, the gas pressure between adjacent molecular sieve adsorber is stablized；When molecular sieve adsorbs
Draught head between device MS1201 and molecular sieve adsorber MS1202 closes automatic transfer valve V1209A after safe range in time,
The pressure stabilizing switching for realizing adjacent molecule sieve absorber in space division system, to keep space division system stable conditions.
Similarly, molecular sieve adsorber MS1201 and molecular sieve adsorber MS1202 is pressed, and electric control valve V1209 valve exists
DCS system control is lower slowly to open, if molecular sieve adsorber MS1202 side air pressure is relatively low, automatic transfer valve V1209B also will
It opens simultaneously, shut-off valve V1209D is constantly in normally open, and automatic transfer valve V1209A is remained closed；Pass through automatic transfer valve
V1209B and shut-off valve V1209D supplements rapidly molecular sieve adsorber MS1202 mono- using the high pressure nitrogen in external gas pipeline
Side tolerance stablizes the gas pressure between adjacent molecular sieve adsorber；When molecular sieve adsorber MS1202 and molecular sieve adsorber
Draught head between MS1201 closes automatic transfer valve V1209B after safe range in time, realizes adjacent molecule in space division system
The pressure stabilizing switching for sieving absorber, to keep space division system stable conditions.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes among still in the protection scope of the utility model.
Claims (3)
1. a kind of modified air separation unit molecular sieve system, including two-stage molecular sieve adsorber MS1201 and MS1202, system pipes
The electric adjustable of automatic transfer valve V1203, V1204, V1205, V1206 and system pipeline middle position on road, system pipeline
Save valve V1209；Molecular sieve adsorber MS1201 output end connects the first end of automatic transfer valve V1203, automatic transfer valve V1205
First end and electric control valve V1209 first end；Molecular sieve adsorber MS1202 output end connects automatic transfer valve V1204
First end, the second end of the first end of automatic transfer valve V1206 and electric control valve V1209；The of automatic transfer valve V1205
Two ends are connected with the second end of automatic transfer valve V1206；The second end of automatic transfer valve V1203 and automatic transfer valve V1204's
Output end is used as after second end connection；It is characterized by: being also additionally arranged the gas pipeline drawn from nitrogen spherical tank；Gas pipeline is set
Bypass line is separately connected the first end and second end of electric control valve V1209 there are two setting；The gas pipeline added connects
It connects and is connected with automatic transfer valve V1209A in the bypass line of the first end of electric control valve V1209；The flue added
Automatic transfer valve V1209B is connected in the bypass line of the second end of road connection electric control valve V1209.
2. a kind of modified air separation unit molecular sieve system according to claim 1, it is characterised in that: the gas added
Body pipeline connect electric control valve V1209 first end bypass line on, the first end of electric control valve V1209 with cut automatically
It changes valve V1209A and is also connected with shut-off valve V1209C；The second end of the gas pipeline connection electric control valve V1209 added
Bypass line on, the one or two end of electric control valve V1209 and automatic transfer valve V1209B are also connected with shut-off valve V1209D.
3. a kind of modified air separation unit molecular sieve system according to claim 2, it is characterised in that: shut-off valve V1209C
And shut-off valve V1209D maintains a normally open state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201821288679.9U CN209034046U (en) | 2018-08-10 | 2018-08-10 | A kind of modified air separation unit molecular sieve system |
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| CN201821288679.9U CN209034046U (en) | 2018-08-10 | 2018-08-10 | A kind of modified air separation unit molecular sieve system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110201486A (en) * | 2019-07-01 | 2019-09-06 | 长兴旗滨玻璃有限公司 | The switching method and storage medium of purifier |
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2018
- 2018-08-10 CN CN201821288679.9U patent/CN209034046U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110201486A (en) * | 2019-07-01 | 2019-09-06 | 长兴旗滨玻璃有限公司 | The switching method and storage medium of purifier |
| CN110201486B (en) * | 2019-07-01 | 2021-11-26 | 长兴旗滨玻璃有限公司 | Switching method of purifier and storage medium |
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