CN103480246A - Multifunctional combined-type low-dew-point gas drying device - Google Patents
Multifunctional combined-type low-dew-point gas drying device Download PDFInfo
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- CN103480246A CN103480246A CN201310423658.9A CN201310423658A CN103480246A CN 103480246 A CN103480246 A CN 103480246A CN 201310423658 A CN201310423658 A CN 201310423658A CN 103480246 A CN103480246 A CN 103480246A
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Abstract
The invention provides a multifunctional combined-type low-dew-point gas drying device and belongs to the technical field of drying devices. The multifunctional combined-type low-dew-point gas drying device comprises a refrigeration type drying system and a micro-heating regeneration adsorbing drying system. The refrigeration type drying system comprises an efficient pre-cooler, an evaporator connected with the efficient pre-cooler, a refrigerating system connected with the evaporator and a gas-water separator connected with the evaporator. One path of the gas-water separator is connected with the efficient pre-cooler, and the other path of the gas-water separator is connected with the micro-heating regeneration adsorbing drying system. The micro-heating regeneration adsorbing drying system comprises a pressure-swing adsorbing barrel A, a pressure-swing adsorbing barrel B, a heater R and a noise deadener S. One path of an outlet of the pressure-swing adsorbing barrel A is connected with the efficient pre-cooler, and the other path of the outlet of the pressure-swing adsorbing barrel A is connected with a gas finished product outlet of the pressure-swing adsorbing barrel B. An inlet in the bottom of the pressure-swing adsorbing barrel B is connected with the noise deadener S. The multifunctional combined-type low-dew-point gas drying device can achieve the purpose that equipment is selectively operated according to different work conditions of a user so that the requirement of the user for purifying compressed gases with different dew points can be met. The multifunctional combined-type low-dew-point gas drying device can save gas sources, lower energy loss and save equipment operation investment cost.
Description
Technical field
The invention belongs to the drying device technical field, be specifically related to a kind of multifunction combined low dew point gas drier.
Background technology
At present, gas drier commonly used is freezing type drier and micro-heat regeneration absorbent drying machine, and the gas that needs processing to obtain different dew points need to be selected different drying machines.Cause like this process complexity loaded down with trivial details, according to the difference of product, need to process on different drying machines, also to the user, increased processing cost simultaneously.
Summary of the invention
The problem existed for prior art, the object of the invention is to the technical scheme that design provides a kind of multifunction combined low dew point gas drier.
Described a kind of multifunction combined low dew point gas drier, it is characterized in that comprising freezing type drying system and micro-heat regeneration absorbent drying system, described freezing type drying system comprises efficient forecooler, the evaporimeter be connected with efficient forecooler, the refrigeration system be connected with evaporimeter, the moisture trap be connected with evaporimeter, described moisture trap one tunnel connects efficient forecooler, another road connects the micro-heat regeneration absorbent drying system, described micro-heat regeneration absorbent drying system comprises pressure-variable adsorption cylinder A, pressure-variable adsorption cylinder B, heater R and silencer S, described pressure-variable adsorption cylinder A exports a road and is connected with efficient forecooler, another road is connected with the outlet of pressure-variable adsorption cylinder B finished product gas by heater R, described pressure-variable adsorption cylinder B bottom inlet is connected with silencer S.
Described a kind of multifunction combined low dew point gas drier, it is characterized in that described refrigeration system comprise with evaporimeter in the loop-coupled gas-liquid separator of refrigerant pipe, cold medium compressor, oil water separator, air-cooled condenser, device for drying and filtering and heating power expansion valve.
Described a kind of multifunction combined low dew point gas drier, is characterized in that described moisture trap and be connected successively ball valve, electronic drain valve formation drainage on it.
Described a kind of multifunction combined low dew point gas drier, it is characterized in that being parallel with hot gas bypass valve between the refrigerant pipe import in described oil water separator and evaporimeter, be parallel with high and low voltage switch between the refrigerant pipe outlet in described oil water separator and evaporimeter, between described device for drying and filtering and heating power expansion valve, be provided with visor.
Above-mentioned a kind of multifunction combined low dew point gas drier, compact conformation, reasonable in design, can, according to the operating mode of curstomer`s site, realize that the multifunctional drying apparatus method of operation supplies the user to select:
1) freezing type drying system and micro-heat regeneration absorbent drying system are combined;
2), when heater is not devoted oneself to work according to operating mode, freezing type drying system and heatless regeneration absorbed type drying system can be combined;
3) isolated operation freezing type drying system;
4) isolated operation heatless regeneration absorbed type drying system;
5) isolated operation micro-heat regeneration absorbent drying system;
In addition, during use, efficient forecooler (dewatering by the heat exchange of the turnover implication large tracts of land) heat-transfer surface that humid air enters the freezing type drying system is larger, can remove the moisture content of total moisture content 73% left and right in compressed air, evaporimeter (coolant refrigeration) can be removed the moisture content of total moisture content 19% left and right in compressed air, enter moisture trap the aqueous water brought from the freezing type drying system, fluid oil is removed, improved the service life of adsorbent in the micro-heat regeneration absorbent drying system, service efficiency, thereby reach energy-conservation purpose, and then enter the micro-heat regeneration absorbent drying system, the moisture content that only need remove total moisture content 8% left and right in compressed air just can reach the compressed-air actuated purpose of depth drying, improved drying efficiency, reduced drying cost.
In sum, the present invention has following beneficial effect:
1, the present invention is the low dew point drying equipment that freezing type drying system and two one of micro-heat regeneration absorbent drying system organically combine;
2, the present invention is the low dew point drying equipment that freezing type drying system and two one of heatless regeneration absorbed type drying system organically combine;
3, the present invention also can realize separately the operation of freezing type drying system;
4, the present invention also can realize separately the operation of heatless regeneration absorbed type drying system;
5, the present invention also can realize separately the operation of micro-heat regeneration absorbent drying system;
6, the present invention can make compressed air drying to dew points at normal pressure≤-70 ℃ (intake air temperature≤45 ℃), and degree of drying greatly improves;
7, the present invention is cooling with air cooling way, is specially adapted to the working environment that water resource lacks;
8, compact conformation of the present invention rationally, easy operating, operate steadily, save the advantages such as the energy, expense are low, easy for installation;
9, the present invention can realize the difference according to user's operating mode, and selective operation equipment, to reach the requirement of user to the purification of compressed air dew point, is saved source of the gas, energy consumption, equipment operation cost of investment; The service life of raising equipment, equipment operating efficiency.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: the 1-cold medium compressor; The 2-hot gas bypass valve; The air-cooled condenser of 3-; The 4-device for drying and filtering; The 5-visor; The 6-heating power expansion valve; The 7-high and low voltage switch; The 8-gas-liquid separator; The 9-evaporimeter; The efficient forecooler of 10-; The 11-moisture trap; The 12-ball valve; The 13-electronic drainage device; The 14-oil water separator; The 15-controller; The QV1-QV11 pneumatic operated valve; The S-muffler; The DV1-DV2 high-temperature ball valve; The ZV1-ZV4-check valve; A, B-pressure-variable adsorption cylinder; The R-heater.
The specific embodiment
Further illustrate the present invention below in conjunction with Figure of description.
As shown in Figure 1, a kind of multifunction combined low dew point gas drier comprises freezing type drying system and micro-heat regeneration absorbent drying system.
The freezing type drying system comprises efficient forecooler 10, the evaporimeter 9 be connected with efficient forecooler 10, the refrigeration system be connected with evaporimeter 9, the moisture trap 11 be connected with evaporimeter 9, moisture trap 11 1 tunnels connect efficient forecooler 10, this road is provided with pneumatic operated valve QV6, another road connects micro-heat regeneration absorbent drying system ，Gai road and is provided with pneumatic operated valve QV7.The humid air entrance of efficient forecooler 10 is provided with pneumatic operated valve QV2, and the dry air outlet of efficient forecooler 10 is provided with pneumatic operated valve QV1.Refrigeration system comprise with evaporimeter 9 in the loop-coupled gas-liquid separator 8 of refrigerant pipe, cold medium compressor 1, oil water separator 14, air-cooled condenser 3, device for drying and filtering 4 and heating power expansion valve 6, wherein in oil water separator 14 and evaporimeter 9, between the refrigerant pipe import, be parallel with hot gas bypass valve 2, be parallel with high and low voltage switch 7 between the refrigerant pipe outlet in oil water separator 14 and evaporimeter 9, between device for drying and filtering 4 and heating power expansion valve 6, be provided with visor 5.The effect of visor 5 is: observe the state of cold-producing medium etc., facilitate plant maintenance personnel detection, debugging, maintenance cooling system; The effect of heating power expansion valve 6 is: when freezing type drying system load increases, the refrigerant temperature in evaporimeter 9 raises, and automatically regulates heating power expansion valve 6 by the signal transmission of heating power expansion valve 6 sensors, until reach new balance; When cooling driers is loaded too small, when evaporating temperature descends, thermal expansion 6 turns down valve automatically, hot gas bypass valve 6 automatically provides a load to evaporimeter 9 simultaneously, to keep the stable of evaporating temperature, the stifled phenomenon of device 9 ice that avoid evaporating occurs, and guarantees the inspiratory capacity of cold medium compressor 1, and the freezing type drying system can be worked.The effect of high and low voltage switch 7 is occur to leak or condenser system is dispelled the heat when bad when refrigeration system, with the unlikely damage of protection cold medium compressor 1.Moisture trap 11 be connected successively ball valve 12, electronic drain valve 13 on it and form drainages and carry out blowdown.
The micro-heat regeneration absorbent drying system comprises pressure-variable adsorption cylinder A, pressure-variable adsorption cylinder B, heater R and silencer S.2 groups of valves in parallel between pressure-variable adsorption cylinder A outlet and the outlet of pressure-variable adsorption cylinder B finished product gas, one group is check valve ZV1 and the check valve ZV2 of series connection, another group is high-temperature ball valve DV1; 2 groups of valves in parallel between the A import of pressure-variable adsorption cylinder and pressure-variable adsorption cylinder B bottom inlet, one group is pneumatic operated valve QV8 and the pneumatic operated valve QV9 of series connection, another group is pneumatic operated valve QV10 and the pneumatic operated valve QV11 of series connection.Pipeline between pneumatic operated valve QV8 and pneumatic operated valve QV9 communicates with moisture trap 11 by pneumatic operated valve QV7 respectively, by pneumatic operated valve QV3, with the humid air entrance, communicates.Pipeline between pneumatic operated valve QV10 and pneumatic operated valve QV11 communicates with silencer S.Pipeline between check valve ZV1 and check valve ZV2 communicates with the dry air outlet by pneumatic operated valve QV5, by pneumatic operated valve QV4, with efficient forecooler 10, communicates, and by high-temperature ball valve DV2, with heater R, communicates.Heater R communicates with pressure-variable adsorption cylinder A by check valve ZV3, by check valve ZV4, with pressure-variable adsorption cylinder B, communicates.
For the ease of controlling each pneumatic operated valve, this device also is provided with controller 15.
The effect of controller 15 is: introduce the compressed air of clean dried from finished product gas outlet conduit through pressure-reduced and-regulated measure, importing magnetic valve group control module, realize the open/close state of regular control operated pneumatic valve by Intelligent PLC Controller, in order to realize and to improve multifunction combined low dew point gas drier, provide crucial effect.
Workflow of the present invention is as follows:
1) finished product gas dew points at normal pressure reach≤-23 ℃, freezing type drier is devoted oneself to work.
Gas to be processed enters from the humid air entrance, the shell that enters efficient forecooler 10 by the pneumatic operated valve QV2 remove portion moisture of tentatively lowering the temperature, enter again evaporimeter 9, carry out heat exchange with refrigeration system in evaporimeter 9, then enter the pipe layer of efficient forecooler 10 through moisture trap 11, pneumatic operated valve QV6, finally by the finished product gas of crossing pneumatic operated valve QV1 and discharge dew points at normal pressure≤-23 ℃.
The workflow of refrigeration system is as follows: the low temperature liquid cold-producing medium flows to (through tube side) evaporimeter 9, through flashing to gaseous state, the cold-producing medium of gaseous state enters gas-liquid separator 8 from evaporimeter 9 outlets, after being gasified totally, micro-liquid refrigerant enters cold medium compressor 1 air entry within it, cold medium compressor 1 is compressed into the gaseous refrigerant of low-temp low-pressure the gas of HTHP, autoregulation by hot gas bypass valve 2, have fraction gas directly to enter evaporimeter 9, most of gas enters air-cooled condenser 3 condensations cooling.From air-cooled condenser 3, high pressure low temperature liquid refrigerant out enters heating power expansion valve 6 by reducing pressure by regulating flow by device for drying and filtering 4 and visor 5, become low pressure liquid and enter (through tube side) evaporimeter 9, the cooling compressed air that enters (through shell side) this evaporimeter 9.The effect of device for drying and filtering 4 is micro-moisture and pollutants of removing in cold-producing medium.The effect of visor 5 is: observe the state of cold-producing medium etc., facilitate plant maintenance personnel detection, debugging, maintenance cooling system.So, the circulation that goes round and begins again.
2) finished product gas dew points at normal pressure reach≤-55 ℃, the micro-heat regeneration absorbent drying system is devoted oneself to work.
Absorption process
When take pressure-variable adsorption cylinder A as absorption (drying) when cylinder: should first close into pneumatic operated valve QV9, open pneumatic operated valve QV11(according to drying process, the a certain moment), the compressed air of undried band moisture is entered by pneumatic operated valve QV3, flow through pneumatic operated valve QV8 to the pressure-variable adsorption cylinder A bottom humid air drier of flowing through from bottom to top in cylinder, moisture in humid air is adsorbed, and dry compressed air is discharged the finished product gas of dew points at normal pressure≤-55 ℃ from the dry air outlet by check valve ZV1, pneumatic operated valve QV5.In addition, the dry air of about 4%-6% flows into pressure-variable adsorption cylinder B by high-temperature ball valve DV2, heater R intensification 120 ℃ (can set separately as required), so that the drier desorb (regeneration) in pressure-variable adsorption cylinder B.
Desorption step
When pressure-variable adsorption cylinder B is desorb (regeneration) cylinder, the dry air of pressure-variable adsorption cylinder A is by the about 4%-6% of high-temperature ball valve DV2() as regeneration gas heater R 120 ℃ (can set separately as required) the pressure-variable adsorption cylinder B that flows through that heats up, blow away the moisture be adsorbed, through pneumatic operated valve QV11(according to drying process, a certain moment), discharge in silencer S.
Second cycle, pressure-variable adsorption cylinder A was desorption step, and pressure-variable adsorption cylinder B is absorption process, and switching cycle is generally 60 minutes (can set separately as required).
3) finished product gas dew points at normal pressure reach≤-70 ℃, combined type blots system (freezing type drying system and micro-heat regeneration absorbent drying system two one organically combine) and devotes oneself to work.
Gas to be processed enters from the humid air entrance, the shell that enters efficient forecooler 10 by the pneumatic operated valve QV2 remove portion moisture of tentatively lowering the temperature, enter evaporimeter 9, carry out heat exchange with refrigeration system in evaporimeter 9, carry out gas-water separation entering moisture trap 11, the gas obtained is through pneumatic operated valve QV7, QV8 enters pressure-variable adsorption cylinder A, through the dry air of pressure-variable adsorption cylinder A by the about 4%-6% of high-temperature ball valve DV2() as regeneration gas heater R 120 ℃ (can set separately as required) the pressure-variable adsorption cylinder B that flows through that heats up, blow away the moisture be adsorbed, through pneumatic operated valve QV11(according to drying process, the a certain moment), after discharging in silencer S, then through check valve ZV1, pneumatic operated valve QV4 enters the pipe layer of efficient forecooler 10, discharge the finished product gas of dew points at normal pressure≤-77 ℃ from the dry air outlet finally by crossing pneumatic operated valve QV1.
4) finished product gas dew points at normal pressure reach≤-55 ℃, heatless regeneration absorbed type drying system is devoted oneself to work.
Absorption process
When take pressure-variable adsorption cylinder A as absorption (drying) when cylinder: should first close into pneumatic operated valve QV9, open pneumatic operated valve QV11(according to drying process, the a certain moment), the compressed air of undried band moisture is entered by pneumatic operated valve QV3, flow through pneumatic operated valve QV8 to the pressure-variable adsorption cylinder A bottom humid air drier of flowing through from bottom to top in cylinder, moisture in humid air is adsorbed, and dry compressed air is discharged the finished product gas of dew points at normal pressure≤-55 ℃ from the dry air outlet by check valve ZV1, pneumatic operated valve QV5.In addition, the dry air of about 12%-15% flows into pressure-variable adsorption cylinder B by high-temperature ball valve DV1, so that the drier desorb (regeneration) in pressure-variable adsorption cylinder B.
Desorption step
When pressure-variable adsorption cylinder B is desorb (regeneration) cylinder, the dry air of pressure-variable adsorption cylinder A is by the about 12%-15% of high-temperature ball valve DV1() as regeneration air stream through pressure-variable adsorption cylinder B, blow away the moisture be adsorbed, through pneumatic operated valve QV11(according to drying process, a certain moment), discharge in silencer S.
Second cycle, pressure-variable adsorption cylinder A was desorption step, and pressure-variable adsorption cylinder B is absorption process, and switching cycle is generally 60 minutes (can set separately as required).
5) finished product gas dew points at normal pressure reach≤-70 ℃, combined type blots system (freezing type drying system and heatless regeneration absorbed type drying system two one organically combine) and devotes oneself to work.
Gas to be processed enters from the humid air entrance, the shell that enters efficient forecooler 10 by the pneumatic operated valve QV2 remove portion moisture of tentatively lowering the temperature, enter evaporimeter 9, carry out heat exchange with refrigeration system in evaporimeter 9, carry out gas-water separation entering moisture trap 11, the gas obtained is through pneumatic operated valve QV7, QV8 enters pressure-variable adsorption cylinder A, through the dry air of pressure-variable adsorption cylinder A by the about 12%-15% of high-temperature ball valve DV1() as regeneration air stream through pressure-variable adsorption cylinder B, blow away the moisture be adsorbed, through pneumatic operated valve QV11(according to drying process, the a certain moment), after discharging in silencer S, then through check valve ZV1, pneumatic operated valve QV4 enters the pipe layer of efficient forecooler 10, discharge the finished product gas of dew points at normal pressure≤-77 ℃ from the dry air outlet finally by crossing pneumatic operated valve QV1.
Claims (4)
1. a multifunction combined low dew point gas drier, it is characterized in that comprising freezing type drying system and micro-heat regeneration absorbent drying system, described freezing type drying system comprises efficient forecooler (10), the evaporimeter (9) be connected with efficient forecooler (10), the refrigeration system be connected with evaporimeter (9), the moisture trap (11) be connected with evaporimeter (9), described moisture trap (11) one tunnels connect efficient forecooler (10), another road connects the micro-heat regeneration absorbent drying system, described micro-heat regeneration absorbent drying system comprises pressure-variable adsorption cylinder A, pressure-variable adsorption cylinder B, heater R and silencer S, described pressure-variable adsorption cylinder A exports a road and is connected with efficient forecooler (10), another road is connected with the outlet of pressure-variable adsorption cylinder B finished product gas by heater R, described pressure-variable adsorption cylinder B bottom inlet is connected with silencer S.
2. a kind of multifunction combined low dew point gas drier as claimed in claim 1, is characterized in that described refrigeration system comprises and the middle loop-coupled gas-liquid separator of refrigerant pipe (8) of evaporimeter (9), cold medium compressor (1), oil water separator (14), air-cooled condenser (3), device for drying and filtering (4) and heating power expansion valve (6).
3. a kind of multifunction combined low dew point gas drier as claimed in claim 1, is characterized in that described moisture trap (11) and be connected successively ball valve (12), electronic drain valve (13) formation drainage on it.
4. a kind of multifunction combined low dew point gas drier as claimed in claim 2, it is characterized in that being parallel with hot gas bypass valve (2) between the refrigerant pipe import in described oil water separator (14) and evaporimeter (9), be parallel with high and low voltage switch (7) between the refrigerant pipe outlet in described oil water separator (14) and evaporimeter (9), between described device for drying and filtering (4) and heating power expansion valve (6), be provided with visor (5).
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104922988A (en) * | 2015-06-05 | 2015-09-23 | 中山市利光电子有限公司 | Purifying device for air compressor system |
| CN105833673A (en) * | 2016-06-20 | 2016-08-10 | 刘柏藩 | Multifunctional environment-friendly cold-dry oil-water separating, filtering and collecting all-in-one purifying machine |
| CN106268202A (en) * | 2016-08-31 | 2017-01-04 | 杭州日盛净化设备有限公司 | A kind of freezing type drying system and control method thereof |
| CN107491108A (en) * | 2017-10-21 | 2017-12-19 | 通化名成电瓷电器有限公司 | Intelligent micro-positive pressure of enclosed busbar control system |
| CN109331616A (en) * | 2018-11-22 | 2019-02-15 | 杭州山立净化设备股份有限公司 | A kind of multifunction combined low dew-point dryer |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104922988A (en) * | 2015-06-05 | 2015-09-23 | 中山市利光电子有限公司 | Purifying device for air compressor system |
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| CN106268202B (en) * | 2016-08-31 | 2019-03-01 | 杭州日盛净化设备有限公司 | A kind of freezing type drying system and its control method |
| CN107491108A (en) * | 2017-10-21 | 2017-12-19 | 通化名成电瓷电器有限公司 | Intelligent micro-positive pressure of enclosed busbar control system |
| CN109331616A (en) * | 2018-11-22 | 2019-02-15 | 杭州山立净化设备股份有限公司 | A kind of multifunction combined low dew-point dryer |
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Application publication date: 20140101 |