CN203002186U - Adsorption type compressed gas dryer capable of shunting and regenerating moisture - Google Patents
Adsorption type compressed gas dryer capable of shunting and regenerating moisture Download PDFInfo
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- CN203002186U CN203002186U CN 201320005476 CN201320005476U CN203002186U CN 203002186 U CN203002186 U CN 203002186U CN 201320005476 CN201320005476 CN 201320005476 CN 201320005476 U CN201320005476 U CN 201320005476U CN 203002186 U CN203002186 U CN 203002186U
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Abstract
The utility model discloses an adsorption type compressed gas dryer capable of shunting and regenerating moisture, wherein a compressed gas inlet (14) is connected with a differential pressure regulating valve (13), the outlet of the differential pressure regulating valve is connected with a first four-way switching valve (1), two connecting ports of the first four-way switching valve is connected with a top opening of a first adsorption tower (2) and a top opening of a second adsorption tower (3) respectively, and another connecting port of the first four-way switching valve is connected with a third four-way switching valve (8), the bottom openings of the first adsorption tower and the second adsorption tower are connected with a second four-way switching valve (5), one connecting port of the second four-way switching valve is connected with an after cooler (6) and is output through a compressed gas outlet (7), another connecting port of the second four-way switching valve is connected with the third four-way switching valve through a heater (4), one connecting port of the third four-way switching valve is in serial connection with a pneumatic ball valve (11) and a manual flow regulating valve (12) and then is connected with the inlet of the differential pressure regulating valve, and another connecting port of the third four-way switching valve is in serial connection with a precooler (9) and a gas-water separator (10) and then is connected with the output of the differential pressure regulating valve.
Description
Technical field
The utility model relates to a kind of compressed air drying purification techniques, relates in particular to a kind of moisture split regeneration absorption type based compressed-gas dryers, can be used for inflammable and explosive compressed air drying and purify.
Background technology
Usually all contain trace amounts of water vapor in various Compressed Gas.Moisture in Compressed Gas will cause obstruction, the corrosion of pipeline, reduce the dischargeable capacity of gas storage container, not meet instructions for use.Therefore Compressed Gas must carry out the drying processing usually.The common technology index that characterizes water vapour content in Compressed Gas is gas " water dew point ".Reduce the moisture in Compressed Gas, its water dew point is reduced to below 0 degree centigrade, the technology that usually adopts is absorption type dryer.Absorption type dryer is exactly the adsorbent that in a pressure vessel (being called adsorption tower) filling can adsorption moisture, when Compressed Gas flows through this adsorption tower, gas contacts with adsorbent, and the moisture in gas will be adsorbed, thereby obtains dry Compressed Gas.
In order to export continuously dry Compressed Gas, usually need to use two adsorption towers, when an adsorption tower carried out the adsorption dewatering processing, another adsorption tower carried out regenerative process, and the moisture that will before adsorb is exactly managed desorb and is discharged.Two adsorption towers hocket drying and regenerative process realize the purpose of continuous wave output dry gas.The process of water adsorption is an exothermic process.Regenerative process in contrast is exactly an endothermic process.Allow moisture break away from adsorbent; must provide heat to moist adsorbent, make hydrone obtain to break away from the needed kinetic energy of adsorbent, also must need appropriate air-flow simultaneously; the moisture that desorbs is taken away, and usually also will cool to the adsorbent of heat makes it to recover adsorption capacity.
The operation principle difference of various double tower absorption type dryers is mainly reflected on its regeneration.Present modal double tower absorption type dryer flow process, mainly contain " Heatless regenerative adsorption dryer ", " low-grade fever micro air volume absorption type dryer ", " the hot regenerative absorption type dryer of air blast ", " vacuum-assisted regenerative absorption type dryer " etc., its common trait is: regenerative process is to carry out under normal pressure or negative pressure.Therefore at first they all need the Compressed Gas step-down in adsorption tower is discharged in environment, utilize subsequently the drying compressed gas of drier output or the surrounding air that utilizes air blast (or vavuum pump) to suck, and be used in conjunction with as required various heating means, make moisture break away from adsorbent and be reproduced air-flow and take away and be discharged in environment.Obviously, these adsorption dry technology generally are only applicable to compressed-air actuated dry the processing., poisonous and harmful inflammable and explosive to natural gas of environmental emission etc. for being not suitable for or be worth valuable gas, aforementioned these adsorption dry technology are inapplicable.
In order to process various inflammable and explosive, poisonous and harmfuls or to be worth noble gas, need to use the adsorption dry technology of zero-emission.So-called zero-emission is exactly that the gas that is dried in drier can not be discharged in environment and goes.So, the necessary air-flow of adsorbent reactivation process just can not be discharged, and re-starts dry the processing and must be collected the entrance that stores or send back to the drier compressor of upstream (or drier).
For the absorption type dryer of zero-emission, if regenerative process uses is a part in the product dry gas exported of drier oneself, be exactly various " dry gas split regeneration " technology.Due to the resistance of gas flow process, the pressure of the product dry gas of drier self output must be a little less than the pressure of drier porch, so regeneration air stream can't be got back to the drier entrance automatically.So the absorption type dryer of employing " dry gas split regeneration technology " just must utilize the air flow drive device such as air blast or booster pump, the pressure loss of compensational regeneration air-flow sends back to the drier entrance with regeneration air stream.Utilize the movable machineries such as air blast or booster pump to drive and carry flammable explosive gas or toxic and harmful, need to take suitable explosion-proof, seal approach, this will significantly increase complexity and the cost of drier, and increase the difficulty of maintaining.In addition, this class drier uses the valves such as conventional ball valve, butterfly valve usually, controls and change the direction of air-flow, and valve quantity is more, causes potential leakage point also more, has reduced the reliability of equipment.
Summary of the invention
The purpose of this utility model is to provide a kind of moisture split regeneration absorption type based compressed-gas dryers, and this drier can have been realized zero-emission, is conducive to improve the safety and reliability of equipment.
In order to realize above-mentioned technical purpose, the utility model adopts following technical scheme:
A kind of moisture split regeneration absorption type based compressed-gas dryers, comprise the first adsorption tower and second adsorption tower of having filled adsorbent, it is characterized in that: described drier also comprises heater, precooler, aftercooler, pressure-difference valve, the first four-way switching valve, the second four-way switching valve, the 3rd four-way switching valve, moisture trap, dust-collecting bucket and pipeline;
Inlet for pressurised gas connects pressure-difference valve, the pressure-difference valve outlet connects the first four-way switching valve, another two interfaces of the first four-way switching valve connect respectively the first adsorption tower upper port and the second adsorption tower upper port, and another interface of the first four-way switching valve connects the 3rd four-way switching valve; The first adsorption tower bottom ports and the second adsorption tower bottom ports connect the second four-way switching valve, and the second four-way switching valve one interface connects the compressed gas vent output of aftercooler, and another interface heater via of the second four-way switching valve connects the 3rd four-way switching valve; Be connected on the pressure-difference valve import after the 3rd four-way switching valve one interface serial connection pneumatic ball valve and hand flow regulating valve, be connected on the pressure-difference valve outlet after another interface serial connection precooler of the 3rd four-way switching valve and moisture trap;
Bottom described precooler, moisture trap and aftercooler, delivery port connects dust-collecting bucket.
Described pressure-difference valve is the automatic pressing differential regulating valve.
Be connected to the fore filter of connecting between described inlet for pressurised gas and pressure-difference valve, fore filter bottom delivery port connects dust-collecting bucket.
Be connected to the post-filter that is connected in series between the outlet of described aftercooler and Compressed Gas, post-filter bottom delivery port connects dust-collecting bucket.
Described precooler and aftercooler are air-cooled strip-fin oil cooler.
The utility model is that a pressure-difference valve is installed between the entrance of drier and adsorption tower, produce suitable pressure reduction before and after making valve, drew the slightly high a part of wet gas of pressure as regeneration gas before drier entrance and flow control valve, moist adsorbent is carried out thermal regeneration and cooling regeneration; Rely on the promotion of gas differential pressure, air-flow after regeneration is after supercooling and separating aqueous water, the pressure of locating after getting back to pressure-difference valve, before adsorption tower is low spot slightly, and converge with primary air, enter adsorption tower and carry out the drying processing, so just realize the purpose of zero-emission, also avoided using the movable machinery of the processed media of contact such as air blast or booster pump simultaneously, therefore be conducive to improve device security and reliability.
Description of drawings
Fig. 1 is the utility model moisture split regeneration absorption type based compressed-gas dryers structural representation, and its flow process is the first adsorption tower absorption, the second adsorption tower heat regeneration;
Fig. 2 is that flow process of the present utility model is the first adsorption tower absorption, the second adsorption tower blast-cold schematic diagram;
Fig. 3 is that flow process of the present utility model is the first adsorption tower absorption, the second adsorption tower standby schematic diagram.
In figure: 1 first four-way switching valve, 2 first adsorption towers, 3 second adsorption towers, 4 heaters, 5 second four-way switching valves, 6 aftercoolers, 7 Compressed Gas outlets, 8 the 3rd four-way switching valves, 9 precoolers, 10 moisture traps, 11 pneumatic ball valves, 12 hand flow regulating valves, 13 pressure-difference valves, 14 inlet for pressurised gas, 15 fore filters, 16 post-filters, 17 dust-collecting buckets.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, a kind of moisture split regeneration absorption type based compressed-gas dryers comprises the first adsorption tower 2 and the second adsorption tower 3, heater 4, precooler 6, aftercooler 9, pressure-difference valve 13, the first four-way switching valve 1, the second four-way switching valve 5, the 3rd four-way switching valve 8, moisture trap 10, dust-collecting bucket 17 and the pipeline of having filled adsorbent;
Inlet for pressurised gas 14 connects pressure-difference valve 13 through the fore filter 15 of two series connection, pressure-difference valve 13 outlets connect the first four-way switching valve 1, another two interfaces of the first four-way switching valve 1 connect respectively the first adsorption tower 2 upper port and the second adsorption tower 3 upper port, there is pressure reduction to exist between pressure-difference valve 13 imports and outlet, this pressure-difference valve 13 is the automatic pressing differential regulating valve, pressure reduction before and after energy auto-adjustment control valve guarantees that the pressure reduction before and after valve is stable.First four-way switching valve 1 another interface connects the 3rd four-way switching valve 8; The first adsorption tower 2 bottom ports and the second adsorption tower 3 bottom ports connect the second four-way switching valve 5, the second four-way switching valve 5 one interfaces connect the post-filter 16 of series connection by Compressed Gas outlet 7 outputs through aftercooler 6, second four-way switching valve 5 another interface heater vias 4 connect the 3rd four-way switching valve 8, and this heater 4 is electric heater; Be connected on pressure-difference valve 13 imports after the 3rd four-way switching valve 8 one interface serial connection pneumatic ball valves 11 and hand flow regulating valve 12, be connected on pressure-difference valve 13 outlets after the 3rd four-way switching valve 8 another interface serial connection precoolers 9 and moisture trap 10.
Described fore filter 15, post-filter 16, precooler 9, moisture trap 10 and aftercooler 6 bottom delivery ports connect dust-collecting bucket 17, the sewage that concentrated exhaust filtering is separated, impurity.
Described precooler 9 and aftercooler 6 are air-cooled strip-fin oil cooler, and this strip-fin oil cooler adopts the aluminum alloy materials manufacturing, and is lightweight, volume is little, can reduce equipment volume, and not need cooling water, be suitable for the occasion that oil field field work etc. does not possess cooling water.The aftercooler 6 that is provided with at the dryer export place is used for the temperature that regulation and control is given vent to anger.
Be provided with two fore filters 15 of series connection at the drier entrance, be used for eliminate aqueous water and mist of oil and various dust impurity that the gas from compressor may exist, the protection adsorbent.
Be provided with two post-filters 16 of series connection at dryer export, be used for eliminating the adsorbent dust, for the downstream gas equipment provides dry, clean Compressed Gas.
The course of work of the utility model moisture split regeneration absorption type based compressed-gas dryers is:
One, the first adsorption tower 2 dryings:
Referring to Fig. 1, after eliminating aqueous water and mist of oil from air inlet 14 by two fore filters 15 from the gas of compressor, arrive automatic pressing differential regulating valve 13, automatic pressing differential regulating valve 13 can be kept a stable pressure reduction before and after valve, and upstream pressure is slightly high, downstream pressure is slightly low.After 13 decompressions of automatic pressing differential regulating valve, the slightly low main air-flow of pressure switches ball valve 1 through the first Pneumatic four-way and enters adsorption tower from the first adsorption tower 2 tops.The adsorbent moisture that gas flow is crossed the first adsorption tower 2 interior fillings is adsorbed, dried gas switches ball valve 5 through the second Pneumatic four-way of bottom, and after cooling through aftercooler 6, eliminate the adsorbent dust by post-filter 16, leave drying machine from Compressed Gas outlet 7 at last, for upstream device.
Two, the second adsorption tower 3 thermal regenerations:
Referring to Fig. 1, when the first adsorption tower 2 carried out adsorption dry, at first the second adsorption tower 2 carried out thermal regeneration.A small amount of Compressed Gas was drawn before automatic pressing differential regulating valve 13, its pressure is higher than primary air, pass through the pneumatic ball valve 11 of hand flow regulating valve 12 and controller control, enter heater 4 through the 3rd Pneumatic four-way switching ball valve 8 again, be heated to suitable temperature, switching ball valve 5 through the second Pneumatic four-way enters from the second adsorption tower 3 bottoms, with the second adsorption tower 3 adsorbent heating, the moisture of the previous absorption of desorb.
Carrying out along with heating process, the hot gas that leaves from the second adsorption tower 3 tops, get back to the 3rd Pneumatic four-way by the first Pneumatic four-way ball valve 1 and switch ball valve 8 places, be cooled to normal temperature through precooler 9 again, then after eliminating liquid moisture through moisture trap 10, get back to the downstream of pressure-difference valve 13, after this imports primary air, enter the first adsorption tower 2 and carry out the drying processing.Heating process continues to carry out, until after (regeneration air stream) leaving air temp of the second adsorption tower 3 reached setting value, heater 4 quit work.Heating process finishes, and begins subsequently the cooling procedure of the second adsorption tower 3.
Three, the second adsorption tower 3 is cooling:
Referring to Fig. 2, after heater 4 quit work, the 3rd Pneumatic four-way switched ball valve 8 and commutates under the control instruction of controller.From the wet gas before automatic pressing differential regulating valve 13, through manually flow control valve 12, pneumatic ball valve 11 arrive the 3rd four-way switching valve 8, then upwards arrive the first four-way switching valve 1, then from the top of the second adsorption tower 3 down, adsorbent is carried out cooling and further regeneration.Leave the hot blast of the second adsorption tower 3 bottoms, quit work through the second four-way switching valve 5 and heater 4(heater 4 this moment), after entering precooler 9 and be cooled to normal temperature by the 3rd four-way switching valve 8, eliminate aqueous water (or having) by moisture trap 10, get back to the rear end of automatic pressing differential regulating valve 13, import primary air, enter the first adsorption tower 2 and carry out the drying processing.
Cooling procedure is to control the time.
The higher phenomenon of air outlet temperature in the short time that may occur for fear of the cooling deficiency of the adsorbent that may occur, after causing the first adsorption tower 2 and the second adsorption tower 3 to switch, before the drying machine gas outlet, aftercooler 6 is housed, is used for guaranteeing that air outlet temperature is normal temperature (a little more than environment temperature).
Cooling procedure is used remains wet gas from the drying machine entrance, but cooling blast direction (from top to bottom) is identical with dry run airflow direction (from top to bottom).Like this, the moistest cooling blast is after the top of regenerator (being the second adsorption tower 3 in this step) obtains cooling, moisture and is absorbed, can utilize heat remaining in adsorbent to coordinate drier regeneration gas, continuation is regenerated to the adsorbent bottom regenerator and is cooling gradually, realizes the dew point of better regeneration effect, assurance gas product.
After finishing cool time, the second adsorption tower 3 enters armed state.
Four, the second adsorption tower 3 is awaited orders
Referring to Fig. 3, in this stage, continue to remain unchanged in the position of the first four-way switching valve V1 and the second four-way switching valve 5, and dry run continues to carry out at the first adsorption tower 2.But pneumatic operated valve 11 cuts out, and therefore from whole Compressed Gas of compressor, all carries out drying by the first adsorption tower 2 and processes.Heater quits work already, precooler 9 also quits work, and aftercooler 6 is according to air outlet temperature and start and stop work.It is identical with the first adsorption tower 2 that the pressure of the second adsorption tower 3 can go back up to system pressure, but the second adsorption tower 3 is interior without gas flow.The 3rd four-way switching valve 8 can return to original state.
Above first to fourth step, the complete procedure that the first adsorption tower 2 absorption exactly, the second adsorption tower 3 regeneration, the second adsorption tower 3 are awaited orders.
Can find out from the above description no matter heat or the cooling process of still awaiting orders, be used for the gas of regeneration, finally still get back to primary air and obtained dry the processing.Therefore, whole regenerative process does not have the boosting of common absorption drier, step-down process, does not externally discharge any gas yet.So this is a kind of absorption drier of zero-emission.
The utility model moisture split regeneration absorption type based compressed-gas dryers has been realized the purpose of zero-emission, does not use the movable machinery of the processed media of any contact such as air blast or booster pump, is conducive to improve security, the reliability of equipment; Utilize the realization of automatic pressing differential regulating valve to the automatic adjusting of regeneration gas flow; Regenerative process is divided into thermal regeneration and two stages of cooling regeneration, and has adopted reverse thermal regeneration, the technology of cooling regeneration in the same way, realize better regenerative process, obtain better gas drying effect; Use four-way switching valve to control gas flow, thereby can reduce valve quantity, minimizing leakage point; Use the ventilation panel fin heat exchanger, do not need cooling water and can reduce equipment volume, use thereby be fit to the field operations such as oil field, colliery.
The utility model is applicable to various inflammable and explosive, the poisonous and harmfuls that are not suitable for discharging or is worth valuable Compressed Gas carry out drying and process, and the device fabrication difficulty is low, and reliability is high, and the operation and maintenance maintenance is convenient.
These are only preferred embodiment of the present utility model; be not be used to limiting protection domain of the present utility model; therefore, all any modifications of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model within spirit of the present utility model and principle.
Claims (5)
1. moisture split regeneration absorption type based compressed-gas dryers, comprise the first adsorption tower (2) and second adsorption tower (3) of having filled adsorbent, it is characterized in that: described drier also comprises heater (4), precooler (9), aftercooler (6), pressure-difference valve (13), the first four-way switching valve (1), the second four-way switching valve (5), the 3rd four-way switching valve (8), moisture trap (10), dust-collecting bucket (17) and pipeline;
Inlet for pressurised gas (14) connects pressure-difference valve (13), pressure-difference valve (13) outlet connects the first four-way switching valve (1), another two interfaces of the first four-way switching valve (1) connect respectively the first adsorption tower (2) upper port and the second adsorption tower (3) upper port, and another interface of the first four-way switching valve (1) connects the 3rd four-way switching valve (8); The first adsorption tower (2) bottom ports and the second adsorption tower (3) bottom ports connect the second four-way switching valve (5), the second four-way switching valve (5) one interfaces connect the compressed gas vent of aftercooler (6) (7) output, and another interface heater via (4) of the second four-way switching valve (5) connects the 3rd four-way switching valve (8); Be connected on pressure-difference valve (13) import after the 3rd four-way switching valve (8) one interface serial connection pneumatic ball valves (11) and hand flow regulating valve (12), be connected on pressure-difference valve (13) outlet after another interface serial connection precooler (9) of the 3rd four-way switching valve (8) and moisture trap (10);
Bottom described precooler (9), moisture trap (10) and aftercooler (6), delivery port connects dust-collecting bucket (17).
2. moisture split regeneration absorption type based compressed-gas dryers according to claim 1 is characterized in that: described pressure-difference valve 13 is the automatic pressing differential regulating valve.
3. moisture split regeneration absorption type based compressed-gas dryers according to claim 1, it is characterized in that: be connected to the fore filter (15) of connecting between described inlet for pressurised gas (14) and pressure-difference valve (13), fore filter (15) bottom delivery port connects dust-collecting bucket (17).
4. moisture split regeneration absorption type based compressed-gas dryers according to claim 1, it is characterized in that: be connected to the post-filter (16) that is connected in series between described aftercooler (6) and Compressed Gas outlet (7), post-filter (16) bottom delivery port connects dust-collecting bucket (17).
5. moisture split regeneration absorption type based compressed-gas dryers according to claim 1, it is characterized in that: described precooler (9) and aftercooler (6) are air-cooled strip-fin oil cooler.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320005476 CN203002186U (en) | 2013-01-07 | 2013-01-07 | Adsorption type compressed gas dryer capable of shunting and regenerating moisture |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320005476 CN203002186U (en) | 2013-01-07 | 2013-01-07 | Adsorption type compressed gas dryer capable of shunting and regenerating moisture |
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| CN 201320005476 Expired - Lifetime CN203002186U (en) | 2013-01-07 | 2013-01-07 | Adsorption type compressed gas dryer capable of shunting and regenerating moisture |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105944517A (en) * | 2016-06-27 | 2016-09-21 | 金华知产婺源信息技术有限公司 | Zero-gas-consumption afterheat reproduction type compressed air drying system |
| CN105964113A (en) * | 2016-06-27 | 2016-09-28 | 金华知产婺源信息技术有限公司 | Zero gas consumption waste heat regeneration compressed air drying device |
| CN110917809A (en) * | 2019-04-11 | 2020-03-27 | 北京诺维新材科技有限公司 | Method and device for adsorbing and regenerating solid adsorbent for adsorbing moisture |
| CN110935281A (en) * | 2019-04-11 | 2020-03-31 | 北京诺维新材科技有限公司 | Adsorption and regeneration device and method for solid adsorbent for adsorbing volatile organic compounds |
| CN113797722A (en) * | 2020-06-12 | 2021-12-17 | 株式会社银河空气科技 | Compressed air drying device, system and method |
| CN115193226A (en) * | 2021-04-14 | 2022-10-18 | 株式会社银河空气科技 | Air dryer and compressed air drying method using the same |
| CN115193227A (en) * | 2021-04-14 | 2022-10-18 | 株式会社银河空气科技 | Air drying system and compressed air drying method using same |
-
2013
- 2013-01-07 CN CN 201320005476 patent/CN203002186U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105944517A (en) * | 2016-06-27 | 2016-09-21 | 金华知产婺源信息技术有限公司 | Zero-gas-consumption afterheat reproduction type compressed air drying system |
| CN105964113A (en) * | 2016-06-27 | 2016-09-28 | 金华知产婺源信息技术有限公司 | Zero gas consumption waste heat regeneration compressed air drying device |
| CN105964113B (en) * | 2016-06-27 | 2018-04-13 | 孙静洁 | A kind of zero gas consumption compressed air drier by afterheat regeneration |
| CN105944517B (en) * | 2016-06-27 | 2018-04-13 | 孙静洁 | A kind of zero gas consumption residual heat regenerating compressed air drying system |
| CN110917809A (en) * | 2019-04-11 | 2020-03-27 | 北京诺维新材科技有限公司 | Method and device for adsorbing and regenerating solid adsorbent for adsorbing moisture |
| CN110935281A (en) * | 2019-04-11 | 2020-03-31 | 北京诺维新材科技有限公司 | Adsorption and regeneration device and method for solid adsorbent for adsorbing volatile organic compounds |
| CN110935281B (en) * | 2019-04-11 | 2022-04-15 | 北京诺维新材科技有限公司 | Adsorption and regeneration device and method for solid adsorbent for adsorbing volatile organic compounds |
| CN113797722A (en) * | 2020-06-12 | 2021-12-17 | 株式会社银河空气科技 | Compressed air drying device, system and method |
| CN115193226A (en) * | 2021-04-14 | 2022-10-18 | 株式会社银河空气科技 | Air dryer and compressed air drying method using the same |
| CN115193227A (en) * | 2021-04-14 | 2022-10-18 | 株式会社银河空气科技 | Air drying system and compressed air drying method using same |
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Granted publication date: 20130619 |