CN102451601B - Novel afterheat regeneration drier - Google Patents
Novel afterheat regeneration drier Download PDFInfo
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- CN102451601B CN102451601B CN 201010514813 CN201010514813A CN102451601B CN 102451601 B CN102451601 B CN 102451601B CN 201010514813 CN201010514813 CN 201010514813 CN 201010514813 A CN201010514813 A CN 201010514813A CN 102451601 B CN102451601 B CN 102451601B
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Abstract
The invention relates to a novel afterheat regeneration drier, which belongs to the technical field of air separation and purification. A heat exchanger and a cooler are adopted, so cooled tail-stage gas is heated by the tail-stage afterheat of a compressor so as to be used as heating gas of the regeneration drier, the single arrangement of a steam heater or an electric heater is not needed, the energy consumption is reduced, and in addition, a control system is also simple. When the outlet temperature of the compressor is higher than 130 DEG C, the heat exchanger can also be omitted, the regeneration gas is directly taken from the tail-stage gas of the compressor, and the structure of the device is simpler.
Description
Technical field
The present invention relates to a kind of novel waste heat regenerative dryer, belong to air separation and purification techniques field.
Background technology
Used instrument wind referred under certain steady pressure the pure air of certain aridity (being generally-40 ℃) is arranged during enterprise produced, and our employed instrument wind drier mainly contains following two kinds at present:
The one, transformation absorption regeneration drier, its structure chart are cooled to compressed air (the about 0.8MPa of pressure) less than 40 ℃ from the gas of compressor through terminal cooler as shown in Figure 1, after the dehydration of moisture trap buffering, enter system of non heated regeneration dryer.Dehydrate along the rising of drier bed, send through check (non-return) valve.Wherein about 85% dry air is through using toward the user as the finished product pneumatic transmission behind the filter, the dry air of about 15% drying is down to normal pressure by flow-limiting valve and is entered the another drier, the previous drier that has adsorbed moisture is regenerated, and regeneration off gases enters atmosphere by pneumatic operated valve through muffler.Be characterized in that apparatus and process is simple, control is convenient.Shortcoming is that the drier switching cycle is short, will switch once in general 5 minutes; Compressor delivery pressure is higher relatively; Consume more dry instrument wind, generally about 15% (according to desired dew point and difference) to some extent.
The 2nd, the dry stream of hot reactivation device, its structure chart as shown in Figure 2, be characterized on the basis of transformation absorption regeneration drier, increase a heater, regenerative process is transformation but also heat not only, it is more thorough to regenerate, make outlet instruments wind obtain lower dew point, satisfy the requirement of different production occasions, and it is less to consume instrument wind, switching cycle is long, generally can accomplish to switch once in 4 hours; Shortcoming is to need to consume steam or electric energy, and control operation is relatively complicated.
Summary of the invention
Above-mentioned defective at prior art, the invention provides a kind of novel waste heat regenerative dryer, with a heat exchanger, a cooler, make the final stage waste heat of the compressor cooled final stage gas (as Fig. 3) of heating, heated air as regenerative dryer, need not set up steam heater or electric heater, reduce energy consumption, and control system is also very simple.If compressor exit temperature more than 130 ℃ the time, also can remove heat exchanger, regeneration gas is directly taken final compressor gas, and the structure of this drier is simpler.
According to a kind of novel waste heat regenerative dryer of the present invention, comprise heat exchanger, cooler, separator, technology valve V5, drier, vent muffler and valve V1-V10; Wherein T1 is 1# drier regeneration outlet temperature; T2 is 2# drier regeneration outlet temperature; Valve V1 is the main valve of heating of 1#, 2# drier; Valve V2 is the cold blowing main valve of 1#, 2# drier; V3 is the instrument wind outlet valve of 1# drier; V4 is the instrument wind outlet valve of 2# drier; V5 is the regeneration inlet valve of 1# drier; V6 is the regeneration inlet valve of 2# drier; V7 is the regeneration outlet valve of 1# drier; V8 is the regeneration outlet valve of 2# drier; V9 is the instrument wind inlet valve of 1# drier; V10 is the instrument wind inlet valve of 2# drier, the HTHP air that comes from the air compressor machine outlet tentatively is cooled to 80-100 ℃ through heat exchanger, heat transferring medium is air to be heated, entering into the 1# cooler again is cooled to 30-50 ℃ and enters into the 1# separator, and the moisture that is condensed in the discharge air, cooling medium is industrial circulating water; The air that the 1# separator is discharged is divided into three the tunnel, one road air returns heat exchanger and is heated to the 100-120 ℃ of conduct gas of heating, enter into 1# drier or 2# drier by valve V1, valve V5 or valve V6,1# drier or 2# drier are heated, and the gas of heating at last enters vent muffler by valve V7 or valve V8 and drains into atmosphere; Two road air are by valve V2, and valve V1 was in closed condition, valve V5 or valve V6 and entered into 1# drier or 2# drier this moment, and 1# drier or 2# drier are carried out cold blowing, and last cold blowing gas enters vent muffler by valve V7 or valve V8 and drains into atmosphere; Three road air enter into 2# drier or 1# drier by valve V10 or valve V9, behind 1# drier or 2# drier adsorption moisture, enter into the instrument wind system by valve V4 or valve V3.
Another technical scheme is that the HTHP air that comes from the air compressor machine outlet is divided into two-way, one road air is as heating gas, enter into 1# drier or 2# drier by valve V1, valve V5 or valve V6,1# drier or 2# drier are heated, and the gas of heating at last enters muffler by valve V7 or valve V8 and drains into atmosphere; 1# drier or the 2# drier of heating after finishing pass through valve V2, and this moment, valve V1 closed, air-cooled 1# drier or the 2# drier of blowing of about about 3% the instrument of throttling, and cold blowing gas enters into vent muffler by valve V7 or valve V8 and drains into atmosphere; Two road air are cooled to about 30-50 ℃ by cooler, enter into separator and discharge the moisture of condensation, the air that goes out behind the separator enters into 2# drier or 1# drier by valve V10 or valve V9, behind 2# drier or 1# drier adsorption moisture, enter into the instrument wind system by valve V4 or valve V3.
Wherein, valve V3, V4, V5 and V6 are cross valves, and V3, V6 open and close simultaneously, and V4, V5 open and close simultaneously; V7, V8, V9 and V10 also are cross valves, and V7, V10 open and close simultaneously, and V8, V9 open and close simultaneously; V1 and V2 are two-way valves, and when V1 opened, V2 closed; When V2 opened, V1 closed.
The advantage of waste heat regenerative dryer of the present invention is:
1, the waste heat regenerative dryer does not need extra steam or electric energy, but it can reach the long effect of switching cycle that hot regenerative dryer is arranged.
2, make and effectively send instrument wind outside and increase (transformation adsorption dehumifier regenerator instrument wind is outward for increasing more than 10% relatively).
3, reclaim the partial heat energy of compressor end gas.
4, reduced the recirculated water load of the terminal cooler of compressor relatively.
5, device is simple, and control system is convenient relatively; Only relate to two cross valves and a two-way valve.
Waste heat regenerative dryer device is particularly suitable for big Compressor Group, big specialized instrument wind system, and compressor delivery pressure higher (〉=0.8Mpa), outlet temperature higher (〉=110 ℃) various model compressors are as the manufacturing enterprise of the pneumatic power of instrument.
Description of drawings
In order to make content of the present invention by clearer understanding, and be convenient to the description of the specific embodiment, it is as follows to provide description of drawings related to the present invention below:
Fig. 1 is the structure chart of transformation absorption regeneration drier in the prior art;
Fig. 2 is the structure chart of hot reactivation drier in the prior art;
Fig. 3 is the structure chart according to waste heat regenerative dryer of the present invention;
Fig. 4 is the structure chart according to another kind of waste heat regenerative dryer of the present invention.
Wherein: V3, V4, V5, V6 are cross valves, and V3, V6 open and close simultaneously, and V4, V5 open and close simultaneously.V7, V8, V9, V10 equally also are cross valves, and V7, V10 open and close simultaneously, and V8, V9 open and close simultaneously.V1, V2 are two-way valves, and when V1 opened, V2 closed; When V2 opened, V1 closed.
The specific embodiment
The principle of waste heat regenerative dryer of the present invention: utilize adsorbent (silica gel or molecular sieve) at normal temperatures moisture to be had extremely strong adsorption capacity, and under the condition of high temperature, the characteristic that the water decomposition that adsorbent is easy to adsorb again sucks out.When pressure air passed through adsorbent, most moisture were adsorbed agent absorption, make its dew point reach-40 ℃; When adsorbents adsorb moisture when saturated, make adsorbent reactivation by high temperature air.For example: water in air vapor partial pressure power P
Water=1333.2P
a(10mmH
g) time, silica gel is as shown in the table to the quiet adsorption capacity of moisture:
The relation of temperature and adsorption capacity:
| Temperature/℃ | 25 | 50 | 75 | 100 | 125 | 150 |
| Quiet adsorption capacity/% | 22 | 12 | 3 | <1 | ~0 | 0 |
By table as seen, silica gel in the time of 100 ℃ to the adsorption capacity of moisture less than 1%; Equalling zero in the time of 150 ℃, is exactly adsorption moisture not.Therefore, regeneration temperature should be the null temperature of adsorption capacity of adsorbate (being adsorbed component).At this moment desorb fully namely is adsorbed matter and gets the gate from adsorbent fully, and adsorbent has recovered absorption property.
Because the improvement of adsorbent production technology makes performance of the adsorbent be greatly improved, adsorption capacity is big, and the intensity height is difficult for broken; And the development of pipeline heat exchanger manufacturing technology, make waste heat regenerative dryer device be able to apply in the industrial production field.
Below with reference to accompanying drawing of the present invention the technical scheme that the present invention realizes is described further.
Fig. 3 is waste heat regenerative dryer figure of the present invention.The high temperature pressure air (such as 140 ℃, 0.8MPa) that comes from the air compressor machine outlet tentatively is cooled to about 95 ℃ through heat exchanger (heat transferring medium is air to be heated), enter into 1# cooler (cooling medium is industrial circulating water) again and be cooled to and enter into the 1# separator about 40 ℃ and discharge the moisture that air is condensed, the air that goes out the 1# separator is divided into three the tunnel.One road air returns heat exchanger and is heated to about 110 ℃ as heating gas, by valve V1, valve V5(or valve V6) enter into 1# drier (or 2# drier), 1# drier (or 2# drier) is heated, make its regeneration 1# dryer export temperature T 1(or 2# dryer export temperature T 2) reach about 80 ℃, the gas of heating at last is by valve V7(or valve V8) enter muffler and drain into atmosphere; Two road air by valve V2(this moment valve V1 be in closed condition), valve V5(or valve V6) enter into 1# drier (or 2# drier), 1# drier (or 2# drier) is carried out cold blowing, make its regeneration 1# dryer export temperature T 1(or 2# dryer export temperature T 2) reach about 40 ℃, last cold blowing gas is by valve V7(or valve V8) enter muffler and drain into atmosphere; Three road air are by valve V10(or valve V9) enter into 2# drier (or 1# drier), behind 1# drier (or 2# drier) adsorption moisture, by valve V4(or valve V3) enter into the instrument wind system.
Fig. 4 is according to another kind of waste heat regenerative dryer figure of the present invention.The high temperature pressure air (such as 140 ℃, 0.8MPa) that comes from the air compressor machine outlet is divided into two-way.One road air is as heating gas, by valve V1, valve V5(or valve V6) enter into 1# drier (or 2# drier), 1# drier (or 2# drier) is heated, make its regeneration 1# dryer export temperature T 1(or 2# dryer export temperature T 2) reach about 80 ℃, the gas of heating at last is by valve V7(or valve V8) enter muffler and drain into atmosphere; The 1# drier (or 2# drier) of heating after finishing cuts out by valve V2(valve V1 this moment) the air-cooled 1# of the blowing drier of about about 3% the instrument of throttling (or 2# drier), make its regeneration 1# dryer export temperature T 1(or 2# dryer export temperature T 2) reach about 40 ℃, cold blowing gas is by valve V7(or valve V8) enter into muffler emptying; Two road air are cooled to about 40 ℃ by last cooler, enter into separator and discharge the moisture of condensation, go out air behind the separator by valve V10(or valve V9) enter into 2# drier (or 1# drier), behind 2# drier (or 1# drier) adsorption moisture, by valve V4(or valve V3) enter into the instrument wind system.
Claims (3)
1. a novel waste heat regenerative dryer is characterized in that: comprise heat exchanger, cooler, separator, technology valve, drier, vent muffler and valve V1-V10; Wherein T1 is 1# drier regeneration outlet temperature; T2 is 2# drier regeneration outlet temperature; Valve V1 is the main valve of heating of 1#, 2# drier; Valve V2 is the cold blowing main valve of 1#, 2# drier; V3 is the instrument wind outlet valve of 1# drier; V4 is the instrument wind outlet valve of 2# drier; V5 is the regeneration inlet valve of 1# drier; V6 is the regeneration inlet valve of 2# drier; V7 is the regeneration outlet valve of 1# drier; V8 is the regeneration outlet valve of 2# drier; V9 is the instrument wind inlet valve of 1# drier; V10 is the instrument wind inlet valve of 2# drier, the HTHP air that comes from the air compressor machine outlet tentatively is cooled to 80-100 ℃ through heat exchanger, heat transferring medium is air to be heated, entering into the 1# cooler again is cooled to 30-50 ℃ and enters into the 1# separator, and the moisture that is condensed in the discharge air, cooling medium is industrial circulating water; The air that the 1# separator is discharged is divided into three the tunnel, one road air returns heat exchanger and is heated to the 100-120 ℃ of conduct gas of heating, enter into 1# drier or 2# drier by valve V1, valve V5 or valve V6,1# drier or 2# drier are heated, and the gas of heating at last enters vent muffler by valve V7 or valve V8 and drains into atmosphere; Two road air are by valve V2, and valve V1 was in closed condition, valve V5 or valve V6 and entered into 1# drier or 2# drier this moment, and 1# drier or 2# drier are carried out cold blowing, and last cold blowing gas enters vent muffler by valve V7 or valve V8 and drains into atmosphere; Three road air enter into 2# drier or 1# drier by valve V10 or valve V9, behind 1# drier or 2# drier adsorption moisture, enter into the instrument wind system by valve V4 or valve V3.
2. waste heat regenerative dryer as claimed in claim 1, it is characterized in that the described HTHP air that comes from the air compressor machine outlet is divided into two-way, one road air is as heating gas, enter into 1# drier or 2# drier by valve V1, valve V5 or valve V6,1# drier or 2# drier are heated, and the gas of heating at last enters muffler by valve V7 or valve V8 and drains into atmosphere; 1# drier or the 2# drier of heating after finishing pass through valve V2, and this moment, valve V1 closed, air-cooled 1# drier or the 2# drier of blowing of the instrument of throttling 3%, and cold blowing gas enters into vent muffler by valve V7 or valve V8 and drains into atmosphere; Two road air are cooled to 30-50 ℃ by cooler, enter into separator and discharge the moisture of condensation, the air that goes out behind the separator enters into 2# drier or 1# drier by valve V10 or valve V9, behind 2# drier or 1# drier adsorption moisture, enter into the instrument wind system by valve V4 or valve V3.
3. waste heat regenerative dryer as claimed in claim 1 or 2 is characterized in that valve V3, V4, V5 and V6 are cross valves, and V3, V6 open and close simultaneously, and V4, V5 open and close simultaneously; V7, V8, V9 and V10 also are cross valves, and V7, V10 open and close simultaneously, and V8, V9 open and close simultaneously; V1 and V2 are two-way valves, and when V1 opened, V2 closed; When V2 opened, V1 closed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010514813 CN102451601B (en) | 2010-10-22 | 2010-10-22 | Novel afterheat regeneration drier |
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|---|---|---|---|
| CN 201010514813 CN102451601B (en) | 2010-10-22 | 2010-10-22 | Novel afterheat regeneration drier |
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| CN102451601B true CN102451601B (en) | 2013-09-04 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103272460A (en) * | 2013-05-29 | 2013-09-04 | 山东道先为能源科技有限公司 | Waste heat regeneration absorption dryer |
| CN104258682A (en) * | 2014-09-28 | 2015-01-07 | 吴江市欧诚包装材料制品有限公司 | Air drying machine |
| CN105477977A (en) * | 2015-12-25 | 2016-04-13 | 武汉旭日华科技发展有限公司 | Energy saving method used for active carbon granule adsorbing and recovering device |
| CN110465164B (en) * | 2019-07-24 | 2022-01-11 | 上海交通大学 | Device and method for preparing ultralow dew point dry air based on low-pressure adsorption |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101314103A (en) * | 2008-07-11 | 2008-12-03 | 周才宝 | High-efficiency drying apparatus for regenerating exhaust heat of pressure gas |
| CN101601959A (en) * | 2009-06-11 | 2009-12-16 | 杭州山立净化设备有限公司 | A kind of Zero gas consumption low dew point compression heat regeneration absorption compressed air drying method and device thereof |
| CN101732953A (en) * | 2009-12-28 | 2010-06-16 | 杭州博大净化设备有限公司 | Energy-saving compressed air drying method and device special for compression heat regenerative pipelines |
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- 2010-10-22 CN CN 201010514813 patent/CN102451601B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101314103A (en) * | 2008-07-11 | 2008-12-03 | 周才宝 | High-efficiency drying apparatus for regenerating exhaust heat of pressure gas |
| CN101601959A (en) * | 2009-06-11 | 2009-12-16 | 杭州山立净化设备有限公司 | A kind of Zero gas consumption low dew point compression heat regeneration absorption compressed air drying method and device thereof |
| CN101732953A (en) * | 2009-12-28 | 2010-06-16 | 杭州博大净化设备有限公司 | Energy-saving compressed air drying method and device special for compression heat regenerative pipelines |
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