CN203620478U - Intelligent control device for pressure swing adsorption equipment - Google Patents
Intelligent control device for pressure swing adsorption equipment Download PDFInfo
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- CN203620478U CN203620478U CN201320731878.3U CN201320731878U CN203620478U CN 203620478 U CN203620478 U CN 203620478U CN 201320731878 U CN201320731878 U CN 201320731878U CN 203620478 U CN203620478 U CN 203620478U
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- Prior art keywords
- adsorption
- adsorption tower
- signal output
- band signal
- purity
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- 238000001179 sorption measurement Methods 0.000 title claims abstract description 79
- 230000003139 buffering effect Effects 0.000 claims abstract description 14
- 238000010521 absorption reaction Methods 0.000 claims description 24
- 230000008676 import Effects 0.000 claims description 12
- 239000002808 molecular sieve Substances 0.000 claims description 11
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 19
- 239000007789 gas Substances 0.000 description 13
- 229910052757 nitrogen Inorganic materials 0.000 description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000002699 waste material Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
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- Separation Of Gases By Adsorption (AREA)
Abstract
The utility model relates to an intelligent control device for pressure swing adsorption equipment. According to the intelligent control device, a main control electric cabinet is internally provided with a programmable controller for controlling a solenoid valve; the solenoid valve is used for controlling a pneumatic pipeline valve to be opened and closed; the solenoid valve is used for respectively controlling left adsorption, pressure equalizing and right adsorption states, and a pressure equalizing time flow is stored in the programmable controller; an air compressor is communicated with a compressed air treatment device; an inlet of an air storage tank is connected with the inlet of a pressure swing adsorption system composed of an adsorption tower a and an adsorption tower b; an outlet of the pressure swing adsorption system is communicated with the inlet of a buffering air storage tank; the inlet of the buffering air storage tank is respectively provided with a flow meter and a purity meter which are electrically connected with a main controller and have output signals; numerical values of the flow meter and the purity meter are fed back to the programmable controller so that the programmable controller can be used for controlling valve switching time of the left adsorption and the right adsorption according to set flow and purity numerical values. Therefore, the problem that an air source is wasted, caused by that the adsorption amount is controlled by the two adsorption towers through set time, is avoided.
Description
Technical field:
The utility model relates to the auxiliary equipment field of making nitrogen by pressure swing adsorption, relates in particular a kind of intelligent controlling device for variable-pressure adsorption equipment.
Background technology:
It is take air as raw material for making nitrogen by pressure swing adsorption, utilize a kind of high-effect, the performance of the selective absorption of the high solid absorbent of selecting to nitrogen and oxygen is separated airborne nitrogen and oxygen, carbon molecular sieve is mainly different in the diffusion rate on carbon molecular sieve surface based on these two kinds of gases to the centrifugation of nitrogen and oxygen, the oxygen diffusion of small diameter is very fast, the more molecular sieve solid phase that enters, in gas phase, just can obtain like this enrichment composition of nitrogen, after a period of time, molecular sieve reaches balance to the absorption of oxygen, according to carbon molecular sieve characteristic different to the adsorbance of adsorbed gas under different pressures, reducing pressure makes carbon molecular sieve remove the absorption to oxygen, this process is called regeneration.
Conventionally use at present two adsorption tower parallel connections, strictly control sequential by full-automatic control system by specific programmable, hocket pressurization absorption and decompress(ion) regeneration, complete separation, obtains required highly purified gas.
Two adsorption towers are controlled adsorbance by setting-up time, can cause like this within the regular hour and when absorption reaches capacity sometimes, to also have remaining time, sometimes absorption does not also reach capacity and is just switched to another adsorption tower, causes time waste or does not reach abundant absorption and lower efficiency.In order to reach better adsorption effect, need to improve existing equipment.
Utility model content:
The purpose of this utility model is for the deficiencies in the prior art part, a kind of intelligent controlling device for variable-pressure adsorption equipment is provided, be communicated with flow and purity that a band signal output flow meter and band signal output purity meter detect gas in the porch of buffering air accumulator, in the time that flow or purity reach the numerical value of setting, carry out by-pass valve control by the control of master controller and realize two valves between adsorption tower and switch back and forth.
Technology solution of the present utility model is as follows:
A kind of intelligent controlling device for variable-pressure adsorption equipment, comprise master control electricity cabinet, air compressor, compressed air treatment device, air storage tank, adsorption tower a, adsorption tower b and buffering air accumulator, in master control electricity cabinet, be provided with Programmable Logic Controller, by Controlled by Programmable Controller magnetic valve, magnetic valve is controlled respectively the open and close of Pneumatic pipe valve, magnetic valve is controlled respectively left absorption, all press, right adsorbed state, and the time flow of all pressing is stored in Programmable Logic Controller, described air compressor is communicated with compressed air treatment device, treated compressed air enters air storage tank and stores, the import of air storage tank is connected with the import of the pressure-variable adsorption piece-rate system of adsorption tower a, adsorption tower b composition, the outlet of pressure-variable adsorption piece-rate system is connected with the import of buffering air accumulator, a band signal output flow meter and band signal output purity meter are installed by the import department of described buffering air accumulator, and band signal output flow meter and the score of band signal output purity are not electrically connected with master controller, feed back to the Programmable Logic Controller of master controller by the numerical value of band signal output flow meter and band signal output purity meter, make Programmable Logic Controller automatically control the valve switching time of left absorption and right absorption according to the flow of setting and purity figure size.
As preferably, in described adsorption tower a, adsorption tower b, be separately installed with carbon molecular sieve.
As preferably, described adsorption tower a is being connected muffler by control valve respectively with the bottom of adsorption tower b.
As preferably, described pressure-variable adsorption piece-rate system can be prepared nitrogen, oxygen or hydrogen.
As preferably, described master control electricity is provided with the display screen being electrically connected with Programmable Logic Controller cashier's office in a shop.
The beneficial effects of the utility model are:
The utility model has changed existing two adsorption towers and has controlled adsorbance by setting-up time, the adsorption time of two towers is fixed, time arrive after with regard to switch valve, thereby cause within the regular hour and when absorption reaches capacity sometimes, to also have remaining time, sometimes absorption does not also reach capacity and is just switched to another adsorption tower, causes time waste or does not reach abundant absorption and lower efficiency.The utility model adopts the flow and the purity that are communicated with a band signal output flow meter and band signal output purity meter in the porch of buffering air accumulator and detect gas, in the time that gas flow or purity reach the numerical value of setting, carry out by-pass valve control by the control of master controller switches back and forth air between two adsorption towers, the valve switching time that can automatically control according to the gas flow in two adsorption towers and purity so left absorption and right absorption, reach better adsorption effect.The utility model can guarantee the purity of obtained gas, and has avoided two adsorption towers to control adsorbance problem by setting-up time, the problem includes: the problem of source of the gas waste.
Accompanying drawing explanation:
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is structural representation of the present utility model.
The specific embodiment:
Embodiment, see accompanying drawing 1, a kind of intelligent controlling device for variable-pressure adsorption equipment, comprise master control electricity cabinet, air compressor 1, compressed air treatment device 2, air storage tank 3, adsorption tower a4, adsorption tower b5 and buffering air accumulator 6, in master control electricity cabinet, be provided with Programmable Logic Controller, by Controlled by Programmable Controller magnetic valve, magnetic valve is controlled respectively the open and close of Pneumatic pipe valve, magnetic valve is controlled respectively left absorption, all press, right adsorbed state, and the time flow of all pressing is stored in Programmable Logic Controller, described air compressor is communicated with compressed air treatment device, treated compressed air enters air storage tank and stores, the import of air storage tank is connected with the import of the pressure-variable adsorption piece-rate system of adsorption tower a, adsorption tower b composition, the outlet of pressure-variable adsorption piece-rate system is connected with the import of buffering air accumulator, a band signal output flow meter 7 and band signal output purity meter 8 are installed by the import department of described buffering air accumulator, and band signal output flow meter and the score of band signal output purity are not electrically connected with master controller, feed back to the Programmable Logic Controller of master controller by the numerical value of band signal output flow meter and band signal output purity meter, make Programmable Logic Controller automatically control the valve switching time of left absorption and right absorption according to the flow of setting and purity figure size.
In described adsorption tower a, adsorption tower b, be separately installed with carbon molecular sieve.
The bottom of described adsorption tower a and adsorption tower b is being connected muffler 9 by control valve respectively.
Described pressure-variable adsorption piece-rate system can be prepared nitrogen, oxygen or hydrogen, as long as according to the different specifications of changing the carbon molecular sieve in adsorption tower a and adsorption tower b of the gas of preparation.
Described master control electricity is provided with the display screen being electrically connected with Programmable Logic Controller cashier's office in a shop, by display screen can real-time monitored to the flow number of setting in the flow number of gas and purity figure and Programmable Logic Controller and the size of purity figure, the contents such as operational factor, parameters and the warning message of centralized displaying equipment.
The course of work of the present utility model: to prepare nitrogen as example, when air compresses through air compressor, compressed air enters air storage tank after entering compressed air treatment device impurity screening, make adsorption tower a work through Controlled by Programmable Controller valve, in adsorption tower a, pressure raises, contained carbon dioxide in air, oxygen is adsorbed the carbon molecular sieve absorption in tower a, after the measurement of nitrogen by band signal output flow meter and band signal output purity meter for absorption, enter into buffering air accumulator, when the numerical value of band signal output flow meter or band signal output purity meter reaches after the numerical value of setting, illustrate that adsorption tower a reaches capacity, the numerical value of its band signal output flow meter or band signal output purity meter can feed back to Programmable Logic Controller, close by the left absorption air outlet valve of Controlled by Programmable Controller, equalizing valve is opened, gas in adsorption tower a enters in adsorption tower b and makes internal pressure reach balanced, all the pressure time is to be stored in Programmable Logic Controller for it, after all pressure finishes, pass through Controlled by Programmable Controller, make adsorption tower b work, and detect flow or purity by band signal output flow meter or band signal output purity meter, adsorption tower a decompress(ion) discharges oxidation and carbon dioxide simultaneously, be discharged in atmosphere through muffler, one of such two adsorption tower are in pressurization adsorbed state, another is in pressing and desorption state, and control the switching of adsorption tower a and adsorption tower b by band signal output flow meter or band signal output purity meter, circulation is always gone down.
Above-described embodiment is the specific descriptions that the utility model is carried out; just the utility model is further described; can not be interpreted as the restriction to the utility model protection domain, those skilled in the art according to the content of above-mentioned utility model make some nonessential improvement and adjust all fall into protection domain of the present utility model within.
Claims (4)
1. the intelligent controlling device for variable-pressure adsorption equipment, comprise master control electricity cabinet, air compressor, compressed air treatment device, air storage tank, adsorption tower a, adsorption tower b and buffering air accumulator, in master control electricity cabinet, be provided with Programmable Logic Controller, by Controlled by Programmable Controller magnetic valve, magnetic valve is controlled respectively the open and close of Pneumatic pipe valve, magnetic valve is controlled respectively left absorption, all press, right adsorbed state, and the time flow of all pressing is stored in Programmable Logic Controller, it is characterized in that: described air compressor is communicated with compressed air treatment device, treated compressed air enters air storage tank and stores, the import of air storage tank is connected with the import of the pressure-variable adsorption piece-rate system of adsorption tower a, adsorption tower b composition, the outlet of pressure-variable adsorption piece-rate system is connected with the import of buffering air accumulator, a band signal output flow meter and band signal output purity meter are installed by the import department of described buffering air accumulator, and band signal output flow meter and the score of band signal output purity are not electrically connected with master controller, feed back to the Programmable Logic Controller of master controller by the numerical value of band signal output flow meter and band signal output purity meter, make Programmable Logic Controller automatically control the valve switching time of left absorption and right absorption according to the flow of setting and purity figure size.
2. a kind of intelligent controlling device for variable-pressure adsorption equipment according to claim 1, is characterized in that: in described adsorption tower a, adsorption tower b, be separately installed with carbon molecular sieve.
3. a kind of intelligent controlling device for variable-pressure adsorption equipment according to claim 1, is characterized in that: described adsorption tower a is being connected muffler by control valve respectively with the bottom of adsorption tower b.
4. a kind of intelligent controlling device for variable-pressure adsorption equipment according to claim 1, is characterized in that: described master control electricity is provided with the display screen being electrically connected with Programmable Logic Controller cashier's office in a shop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320731878.3U CN203620478U (en) | 2013-11-18 | 2013-11-18 | Intelligent control device for pressure swing adsorption equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320731878.3U CN203620478U (en) | 2013-11-18 | 2013-11-18 | Intelligent control device for pressure swing adsorption equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203620478U true CN203620478U (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320731878.3U Expired - Fee Related CN203620478U (en) | 2013-11-18 | 2013-11-18 | Intelligent control device for pressure swing adsorption equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203620478U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109529533A (en) * | 2018-11-06 | 2019-03-29 | 威海威高海盛医用设备有限公司 | A kind of optimization and control method of dual reflux pressure-swing absorption apparatus |
| CN118267827A (en) * | 2024-04-28 | 2024-07-02 | 中科富海(杭州)气体工程科技有限公司 | Switching control method and device for molecular sieve of air separation equipment |
-
2013
- 2013-11-18 CN CN201320731878.3U patent/CN203620478U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109529533A (en) * | 2018-11-06 | 2019-03-29 | 威海威高海盛医用设备有限公司 | A kind of optimization and control method of dual reflux pressure-swing absorption apparatus |
| CN118267827A (en) * | 2024-04-28 | 2024-07-02 | 中科富海(杭州)气体工程科技有限公司 | Switching control method and device for molecular sieve of air separation equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20181118 |