CN2243331Y - Regenerating apparatus for air adsorbing drying agent by indirectly heating using waste heat - Google Patents
Regenerating apparatus for air adsorbing drying agent by indirectly heating using waste heat Download PDFInfo
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- CN2243331Y CN2243331Y CN 95221477 CN95221477U CN2243331Y CN 2243331 Y CN2243331 Y CN 2243331Y CN 95221477 CN95221477 CN 95221477 CN 95221477 U CN95221477 U CN 95221477U CN 2243331 Y CN2243331 Y CN 2243331Y
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Abstract
The utility model discloses an energy saving regenerating apparatus for compressed air adsorbing drying agent by indirectly heating using waste heat, which is on the basis of an apparatus for the purifying and drying of the compressed air inside prior compressed air stations. Heat exchangers are arranged on pipelines from the exhaust port of an air compressor to the gas inlet port of an after cooler. Cut-off valves are arranged on the pipelines between an orifice plate and a heat exchanger, cut-off valves are arranged on the pipelines from the back part of the orifice plate to the gas outlet pipe of the heated medium of the heat exchanger, and cut-off valves are arranged on the pipelines between the gas outlet of the heated medium of the heat exchanger and the gas outlets of a working and a regenerating barrels. The utility model is additionally provided with the heat exchangers and the cut-off valves for saving energy.
Description
The utility model belongs to compressed air and purifies and the drying device field, and what relate generally to is a kind of energy-saving used heat indirect regenerating unit.
At present, every profession and trade compressed air drying method commonly used on engineering is an absorption method, promptly utilize and have the adsorbent of moisture pick-up properties in various degree and come moisture in the absorbed air, when the adsorbent in the seating nipple again during adsorption moisture (promptly reaching capacity), just must the water decomposition that it is adsorbed suck out, this desorption process is the regeneration of adsorbent, regenerative process is an endothermic process, because adsorbent always will reach the degree that needs regeneration, so general drier is made up of two absorbing cylinders, an absorption (work), a regeneration (standby), adsorbent regeneration method commonly used now has thermal regeneration method and heatless regeneration method: a) the thermal regeneration method utilizes electric heater and air blast to make high temperature, the gas of relatively dry makes it to obtain desorption heat, transpiring moisture by the adsorbent in the absorbing cylinder, remove adsorbed water, make the adsorbent in the absorbing cylinder reach regeneration; B) the heatless regeneration method is to utilize dried a small amount of high pressure, (its relative humidity is reduced greatly after the dry gas step-down, improve its wettability power) pass through absorbing cylinder, make the adsorbent in it reach regeneration (shown in Figure of description 1), the thermal regeneration method is owing to need to increase electric heater and air blast, thereby it is the maintenance operation expense is increased, and energy-conservation not obvious when pressure is high; It is few that the heatless regeneration method has a number of devices, the drying device volume is little, flexible and convenient operation, the characteristics of obvious energy conservation, obtaining extensive use aspect compressed air drying and the purification, but because its regeneration usefulness gas is shunted out by the finished product dry gas, when dry gas pressure is lower than certain value, the ratio that the regeneration gas consumption accounts for the finished product dry gas scale of construction increases, effectively air demand reduces, at this moment, the power consumption of unit air demand is bigger than thermal regeneration method, generally speaking, when operating pressure is lower than 0.4MPa (cutting off), should not adopt the heatless regeneration seasoning, at the problems referred to above, in order to satisfy the requirement of under low dew point and low pressure, working, at present, a kind of little thermal regeneration method (shown in Figure of description 2) is proposed, it is that the regeneration of heatless regeneration is heated with electric heater a little with dry gas, make it to obtain a part of heat, then this part heat is fallen as the desorption heat loss of moisture in the adsorbent of need regeneration, thereby accelerated the speed of desorb greatly, reduced the regeneration gas consumption, and can make the adsorbent reactivation degree higher, make finished product gas dew point lower, but this method has increased a consumer again, will consume a part of electric energy, and maintenance load is increased, and energy-saving effect is not remarkable from overall efficiency.
The purpose of this utility model promptly produces thus, a kind of waste thermal energy that utilizes the high-temperature exhaust air of air compressor is proposed, the energy-saving used heat indirect regenerating unit that makes the inefficacy adsorbent in the drying device obtain regenerating, thereby energy savings greatly improve effective air demand of unit.
For achieving the above object, the utility model is achieved through the following technical solutions: be by compressor existing, aftercooler, surge tank, gas---liquid/gas separator, oil expeller, cross valve, vent muffler, check-valves, seating nipple, regeneration tube, on the basis of the compressed air drying system that the connecting pipe between restricting orifice and each parts is formed, the air compressor exhaust outlet is provided with the heat exchanger that is used for adsorbent reactivation usefulness gas in the thermal regeneration tube to the pipeline between the aftercooler import; Pipeline between restricting orifice and the heat exchanger is provided with stop valve; (before the newly-installed stop valve) to the bypass line between the heat exchanger heated medium escape pipe is provided with stop valve behind the restricting orifice; On the connecting line between heat exchanger heated medium gas outlet and regeneration tube and the drying gas outlet, be respectively arranged with stop valve,
The utility model has been owing to set up heat exchanger and connected valve, thereby saved the energy greatly, improved effective air demand of unit, now lifts an example and is illustrated its energy-saving effect; If existing 20m
3/ min air compressor and a complete set of drying equipment thereof, Compressor Discharge Pressure are 0.9MPa (cutting off), if adopt the heatless regeneration method to make finished product gas dew points at normal pressure be-40 ℃, the gas consumption of then need regenerating is about 14%, and the finished product gas of promptly confessing has only 17.2m
3/ min, unit shaft power is 120Kw, the finished product gas list power consumption of confessing is 0.11628Kw.h/m
3, as change used heat indirect method of reproduction into, and same unit, the usefulness of will regenerating gas is heated to about 80 ℃, and the gas consumption of then regenerating is about 5% (being no more than 7% at most), same aerogenesis 20m
3/ min can confess finished product gas 19m
3/ min, the finished product gas list power consumption of confessing is 0.10526Kw.h/m
3, than heatless regeneration seasoning economize on electricity 9.5%[(0.11628-0.10526)/0.11628].Concerning this unit, by moving 20 hours every day, 300 days meters of operation in a year, but saves energy 68400Kw.h, only use gas with regard to regenerating, used heat indirect method of reproduction can be saved gas consumption more than 50% than heatless regeneration method, if Compressor Discharge Pressure is low more, the energy-saving effect of used heat indirect method of reproduction is just remarkable more.
The utility model has following accompanying drawing:
Figure of description 1 is existing heatless regeneration schematic representation of apparatus.
Figure of description 2 is existing little thermal regeneration schematic representation of apparatus.
Figure of description 3 is the utility model step-down used heat indirect regenerating unit schematic diagram
Figure of description 4 is the utility model air blast used heat indirect regenerating unit schematic diagram.
In conjunction with the accompanying drawings, it is as follows to provide embodiment of the present utility model: embodiment 1.
Shown in Figure of description 3: the utility model is by compressor (1) existing, aftercooler (3), surge tank (4), gas---liquid/gas separator (5), oil expeller (6), cross valve (7), vent muffler (8), check-valves (9), (10), seating nipple (11), regeneration tube (12), on the basis of the air compression station compressed air drying device that restricting orifice (13) and the pipeline that is connected with each parts are formed, air compressor (1) exhaust outlet to the pipeline between aftercooler (3) air inlet is provided with heat exchanger (2), heat exchanger (2) can adopt commercially available shell-and-tube exchanger, heat medium (being heating agent) in the heat exchanger (2) is whole high-temperature exhaust airs of air compressor, heated medium (being refrigerant) is the regeneration of the adsorption desiccant in compressed air adsorption dehumifier gas, the effect of this heat exchanger (2) is exactly a regeneration gas of the thermal energy transfer that high-temperature gas had that compressor is discharged being given the compressed air adsorption desiccant, reduce the regeneration gas consumption to reach, energy savings, improve the purpose of effective air demand of single unit, restricting orifice (13) is provided with stop valve (16) to the pipeline between the heat exchange gas (2), and restricting orifice (13) back (before the stop valve 16) to the by-pass line between the heat exchanger heated medium escape pipe is provided with stop valve (17); On the connecting line between the gas outlet of heat exchanger (2) heated medium gas outlet and seating nipple (11) and regeneration tube (12), be respectively arranged with stop valve (14), (15).The valve that native system adopted removes check-valves (9), and outside (10), remaining is sequence valve, and the course of work of the present utility model is as follows:
A. work, during regeneration:
Shown in Figure of description 3, after the atmosphere process air compressor two stages of compression (intercooler is arranged in the middle of the two-stage), temperature raises, relative humidity reduces that (power is t≤160 ℃ with compressor secondary exhaust parameter on the engineering, p≤0.9MPa), behind over-heat-exchanger (2), the adsorption desiccant usefulness gas of regenerating is heated, compressed air becomes the saturated compressed air (being that relative humidity is 1) of t≤40 ℃ through aftercooler (3) cooling then, pass through the pulsation of surge tank (4) buffer gas flow then, again through gas---liquid/gas separator (5) is isolated the condensate water in the compressed air, through oil expeller (6) (as being non-lubricated compressor, the desirable oil expeller that disappears), enter seating nipple (11) (being absorbing cylinder) behind the cross valve (7), adsorbent in the seating nipple gets off the most water adsorption in the compressed air, the finished product gas (dew point reaches requirement) of discharging is most of to be delivered in user's pipe network through check-valves (9), small part finished product gas (＜7%) has also reduced relative humidity as regeneration usefulness gas after restricting orifice (13) step-down, pass through stop valve (16) again, heat exchanger (2) back temperature rises, relative humidity further reduces greatly, and then through extremely regeneration tin (12) of stop valve (15), moisture in the adsorbent in the regeneration tube is by this partial regeneration low pressure, high temperature, dry air desorbs, carry out regeneration tube (12), through cross valve (7), vent muffler enters atmosphere after (8).
At this moment stop valve (14), (17) are closed, and all the other stop valves are opened.B. during blast-cold:
Adsorbent in regeneration tube (promptly half work period later stage) after regeneration after a while, the adsorbent reactivation degree of depth reaches requirement, at this moment should regenerate the tube blast-cold, specific practice is: close stop valve (16), open stop valve (17) simultaneously, regeneration uses dry gas without heat exchanger (2), directly through bypass stop valve (17), stop valve (15) enters the regeneration tube, the tube adsorbent blast-cold in (12) of will regenerating, through cross valve (7), vent muffler enters atmosphere after (8).C. switch:
After the adsorbent work a period of time in the seating nipple, when the finished product gas of confessing can not reach requirement, two absorbing cylinders will switch, and switched back compressed air and entered (12) through cross valve (7), deliver in user's pipe network through check-valves (10) again, and stop valve (15), (17) are closed, (14), (16) open, (11) are regenerated, blast-cold, this is half work period of back.Embodiment 2.
The utility model is on the basis of embodiment 1, restricting orifice (13) is removed, in stop valve (16), 17) inlet duct on install air blast (18) additional, A. work, during regeneration:
The compressed-air actuated flow process of finished product is with embodiment 1A, the different usefulness gas of just regenerating are not the parts of finished product gas, but atmosphere is used gas as regenerating, pressurize through air blast (18), directly, behind heat exchanger (2), heated again, improve temperature by high temperature compressed air by stop valve (16), reduce relative humidity, enter regeneration tube (12) through stop valve (15) then, the water decomposition in the adsorbent is wherein sucked out, carry out the regeneration tube, through cross valve (7), vent muffler enters atmosphere after (8), at this moment, and stop valve (14), (17) close, all the other stop valves are opened.
B. during blast-cold, when C switches with embodiment 1B, C.
Claims (3)
1. compressed air adsorption desiccant used heat indirect regenerating unit, comprise compressor (1), aftercooler (3), surge tank (4), gas---liquid/gas separator (5), oil expeller (6), cross valve (7), vent muffler (8), check-valves (9), (10), seating nipple (11), regeneration tube (12), the connecting pipe between restricting orifice (13) and each parts, of the present utility model being characterised in that: described compressor (1) exhaust outlet to the pipeline between the air inlet of aftercooler (3) is provided with heat exchanger (2); Restricting orifice (13) to the pipeline between the heat exchanger (2) is provided with stop valve (16); Restricting orifice (13) back [stop valve (16) is preceding] to the by-pass line between heat exchanger (2) the heated medium escape pipe is provided with stop valve (17); On the connecting pipe between the gas outlet of heat exchanger (2) heated medium gas outlet and seating nipple (11) and regeneration tube (12), be respectively arranged with stop valve (14), (15).
2. compressed air adsorption desiccant used heat indirect regenerating unit according to claim 1 is characterized in that: in stop valve (16), install air blast (18) on (17) inlet duct additional.
3. compressed air adsorption desiccant used heat indirect regenerating unit according to claim 1 is characterized in that: described stop valve (14), (15), and (16), (17) are sequence valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95221477 CN2243331Y (en) | 1995-09-10 | 1995-09-10 | Regenerating apparatus for air adsorbing drying agent by indirectly heating using waste heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95221477 CN2243331Y (en) | 1995-09-10 | 1995-09-10 | Regenerating apparatus for air adsorbing drying agent by indirectly heating using waste heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2243331Y true CN2243331Y (en) | 1996-12-25 |
Family
ID=33869081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95221477 Expired - Fee Related CN2243331Y (en) | 1995-09-10 | 1995-09-10 | Regenerating apparatus for air adsorbing drying agent by indirectly heating using waste heat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2243331Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1064270C (en) * | 1996-07-24 | 2001-04-11 | 化学工业部上海化工研究院 | Hydrogen drying method for electric generator |
| CN106457132A (en) * | 2014-05-09 | 2017-02-22 | 阿特拉斯·科普柯空气动力股份有限公司 | Method and device for cool drying gas |
| CN108579352A (en) * | 2018-06-25 | 2018-09-28 | 长沙经济技术开发区祥原动力供应有限公司 | A kind of drying system and its control method for compressed gas |
| CN111054191A (en) * | 2019-12-31 | 2020-04-24 | 攀钢集团西昌钢钒有限公司 | Compressed air drying device and compressed air supply system |
-
1995
- 1995-09-10 CN CN 95221477 patent/CN2243331Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1064270C (en) * | 1996-07-24 | 2001-04-11 | 化学工业部上海化工研究院 | Hydrogen drying method for electric generator |
| CN106457132A (en) * | 2014-05-09 | 2017-02-22 | 阿特拉斯·科普柯空气动力股份有限公司 | Method and device for cool drying gas |
| CN108579352A (en) * | 2018-06-25 | 2018-09-28 | 长沙经济技术开发区祥原动力供应有限公司 | A kind of drying system and its control method for compressed gas |
| CN111054191A (en) * | 2019-12-31 | 2020-04-24 | 攀钢集团西昌钢钒有限公司 | Compressed air drying device and compressed air supply system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |