CN111298605A - Novel blowing steam heat exchange regeneration suction dryer - Google Patents
Novel blowing steam heat exchange regeneration suction dryer Download PDFInfo
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- CN111298605A CN111298605A CN201910747038.8A CN201910747038A CN111298605A CN 111298605 A CN111298605 A CN 111298605A CN 201910747038 A CN201910747038 A CN 201910747038A CN 111298605 A CN111298605 A CN 111298605A
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- steam heat
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- heat exchanger
- heat exchange
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- 238000011069 regeneration method Methods 0.000 title claims abstract description 50
- 230000008929 regeneration Effects 0.000 title claims abstract description 48
- 238000007664 blowing Methods 0.000 title claims abstract description 11
- 238000001179 sorption measurement Methods 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 238000005485 electric heating Methods 0.000 claims abstract description 8
- 230000003584 silencer Effects 0.000 claims abstract description 3
- 239000003463 adsorbent Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 238000011144 upstream manufacturing Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 25
- 239000000498 cooling water Substances 0.000 description 6
- 210000001503 joint Anatomy 0.000 description 3
- 230000001172 regenerating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/261—Drying gases or vapours by adsorption
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Drying Of Gases (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
At present, the blowing heat absorption dryer mainly adopts an electric heating mode to heat the regenerated gas. In order to further reduce energy consumption, a method for replacing electric heating completely or partially by steam heat exchange is developed in the industry. However, during the switching between heating and cooling, it is necessary to shut off the valve upstream of the steam heat exchanger. Water hammer can be formed to damage the equipment. In order to overcome the defects of the prior art, the invention provides a novel blowing steam heat exchange regeneration suction dryer. The device mainly comprises a pneumatic butterfly valve, a one-way valve, a stop valve, a pneumatic angle seat valve, a silencer, a blower, a steam heat exchanger, an electric heater, a cooler, a temperature sensor, a thermometer, a pressure gauge, a pressure sensor, an adsorption tower, a filter and a pipeline. The heating mode of the regenerated gas is steam heat exchange and electric heating series-connection combined work, and the regenerated gas can adapt to different steam heat sources of customers. And the inlet of the steam heat exchanger is not provided with a pneumatic switching valve, the steam heat exchanger and the cooler are not connected in series in one working loop, but two working loops are formed by switching the valves, so that the problem of water hammer is avoided. Meanwhile, due to the fact that the regenerated gas does not pass through the steam heat exchanger and the electric heater in the cooling process, pressure loss in the cooling process is reduced, power consumption of the whole machine is reduced, and the device is more energy-saving and efficient.
Description
Technical Field
The invention relates to the technical field of general machinery, in particular to a blast heat absorption dryer.
Background
At present, the blowing heat absorption dryer mainly adopts an electric heating mode to heat the regenerated gas. The heating time of the regeneration process is long, the electric power consumption of the heater is large, and the energy consumption of the whole machine is high. In order to further reduce energy consumption, a method for replacing an electric heater with all or part of a steam heat exchanger is invented in the industry, so that the regenerated gas is heated, and the adsorbent is thermally regenerated. In the switching process of heating and cooling of the conventional steam heat exchange type regeneration suction dryer, a valve at the upstream of a steam heat exchanger needs to be cut off. The valve can form the comdenstion water after closing, and when getting into the heating process of next work flow, the valve is opened suddenly, and a large amount of water suddenly gets into steam heat exchanger, can form the water hammer phenomenon, and this has seriously influenced steam heat exchanger's life.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a novel blowing steam heat exchange regeneration suction dryer. When the drying machine is switched to a cooling process from a heating process, the regenerated gas does not pass through the steam heat exchanger in the cooling process but enters the adsorption tower from another bypass to cool the adsorbent by cutting off the butterfly valve of the regeneration loop. This results in no need to install control valve to control the steam supply condition on the steam side of the steam heat exchanger, and avoids the water hammer problem. Meanwhile, due to the fact that the regenerated gas does not pass through the steam heat exchanger and the electric heater in the cooling process, pressure loss in the cooling process is reduced, power consumption of the whole machine is reduced, and the device is more energy-saving and efficient.
The technical scheme adopted by the invention is as follows: the blowing steam heat exchange regeneration suction dryer mainly comprises an adsorption tower, a steam heat exchanger, an electric heater, a cooler, a blower, a pneumatic butterfly valve, a one-way valve, a pneumatic angle seat valve, a stop valve, a temperature sensor, a pressure sensor, a thermometer, a pressure gauge and the like. The steam heat exchanger and the cooler are not connected in series in one working loop but are connected in parallel, and two working loops are formed by switching valves. The steam heat exchanger and the electric heater are connected in series in the same working loop, and the electric heater is used as an auxiliary heat source to heat the regenerated gas to realize stable regeneration temperature.
The inlet of the steam heat exchanger is not provided with a pneumatic butterfly valve, the steam heat exchanger still supplies steam in the cooling process, and partial condensed water formed by heat loss is discharged through the outlet of the steam heat exchanger.
Heating stage of the regeneration process: firstly, the regenerated gas is heated and regenerated through a steam heat exchanger, and secondly, the regenerated gas is heated in an auxiliary manner by using an electric heater. Whether the steam heater participates in heat exchange is controlled through a pneumatic butterfly valve V10. The operating state of the electric heater is controlled by the TT1 regenerative temperature sensor. When the temperature of the regenerated gas heated by the steam heat exchanger does not reach the lower limit of the set regeneration temperature, the electric heater starts to work; when the temperature of the regeneration gas reaches the set regeneration temperature upper limit, the electric heater stops working.
Cooling stage of regeneration process: the pneumatic butterfly valve V10 is closed, and the regenerated gas can not pass through the steam heat exchanger, but enters the adsorption tower through the pneumatic butterfly valve V13.
Compared with the prior art, the invention has the beneficial effects that: the device changes the heating mode of the regenerated gas from electric heating into steam heat exchange and electric heating to work in series. Due to the fact that the electric heating device and the steam heat exchanger are connected in series, different steam conditions of customers can be adapted. When the condition of the steam of the customer is not enough to heat the regeneration gas to the regeneration temperature, the electric auxiliary heating can supplement the heat source to heat the regeneration gas to the regeneration temperature, so that the full regeneration of the adsorbent is ensured. When the heating process is switched to the cooling process, the valves of the regeneration loop (the valves of V10 and V12 are closed, and the valves of V11 and V13 are opened) are switched to control whether the steam heat exchanger works or not. The valve at the steam side is not cut off in the switching process, condensed water cannot be formed in the transmission pipeline and accumulated at the switching valve, and therefore the phenomenon that a large amount of water is suddenly brought into the steam heat exchanger to impact the steam heat exchanger to cause water hammer and damage to the heat exchange pipe of the steam heat exchanger in the next switching process is avoided.
Drawings
Figure 1 is a cooling process of a novel blowing steam heat exchange regeneration dryer.
Figure 2 heating process of new blast steam heat exchange regenerating drier.
N1-compressed air inlet; n2-compressed air outlet; n3-regeneration gas inlet; n4-regeneration gas outlet; n5-cooler water inlet; N6-Cooling Water Outlet; n7-steam inlet; n8-condensate outlet; v1, V2, V5, V6, V7, V8, V10, V11, V12, V13-pneumatic butterfly valve; v3, V4-one-way valve; v17, V18, V19-stop valve; v15, V16, V20-pneumatic angle seat valve; s1, S2-silencer, K1-blower; h1-electric heater; HE 01-steam heat exchanger; HE 02-chiller; TT1, TT 2-temperature sensor; TG1, TG 2-thermometer, PG1, PG 2-pressure gauge, PT1, PT2, PT 3-pressure sensor, Ads.A, Ads.B-adsorption tower and F1-filter.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The steam heating regeneration adsorption dryer mainly comprises pneumatic butterfly valves V1, V2, V5, V6, V7, V8, V10, V11, V12 and V13, check valves V3 and V4, stop valves V17, V18 and V19, pneumatic angle seat valves V15, V16 and V20, silencers S1 and S2, a blower K1, a steam heat exchanger HE01, an electric heater H1, a cooler HE02, temperature sensors TT1 and TT2, temperature tables TG1 and 2, pressure gauges PG1 and TG2, pressure sensors PT1, PT2 and PT3, adsorption towers Ads.A and Ads.B, a filter F1 and pipelines.
The special points are as follows: as shown in fig. 1. During cooling, the valves V10 and V12 are closed, and the valves V11 and V13 are opened. The blower sucks air from the cooler, and enters the bottom of the adsorption tower Ads.A or Ads.B through a pneumatic butterfly valve V13, V5 or V6 to cool the adsorbent. The regenerated gas is subjected to heat exchange with the adsorbent and temperature rise, then enters a cooler HE02 through a V8 or V7 valve and a V11 valve, is cooled by the cooler, and is sucked by a fan K1. The adsorbent is cooled to a suitable temperature through repeated cycles. The regenerated gas does not pass through the steam heat exchanger HE01 during cooling, and the steam heat exchanger does not need to be provided with a pneumatic valve to control whether the steam is supplied or not.
The connection relationship of the above components is as follows: one ends of the pneumatic valves V1 and V2 are connected through a pipeline, a compressed air inlet N1 is formed in the pipeline, and the adsorption tower Ads.A and the adsorption tower Ads.B are arranged left and right separately. The bottom of the adsorption tower Ads.A is respectively connected with one end of a pneumatic butterfly valve V1, one end of a pneumatic butterfly valve V5 and one end of an angle seat valve V15 through pipelines. The bottom of the adsorption tower Ads.B is respectively connected with one end of a pneumatic butterfly valve V2, one end of a pneumatic butterfly valve V6 and one end of an angle seat valve V16 through pipelines. The muffler S1 is connected to the other end of the angle seat valve V15. The muffler S2 is connected to the other end of the angle seat valve V16. The other ends of the pneumatic butterfly valves V5 and V6 are communicated with one ends of the pneumatic butterfly valves V12 and V13 through pipelines, and temperature sensors TT2 are mounted on the pipelines. The other end of the pneumatic butterfly valve V12 is connected with a pipeline to a regeneration gas outlet N4. The side wall of the adsorption tower Ads.A is connected with a stop valve V17 and a pressure gauge PG1 in series through a pipeline; the side wall of the adsorption tower Ads.B is connected with a stop valve V18 and a pressure gauge PG2 in series through pipelines. The top of the adsorption tower Ads.A is respectively connected with one ends of a pneumatic butterfly valve V7, a one-way valve V3 and an angle seat valve V20 through pipelines, and a pressure sensor PT1 is arranged on the pipelines. The top of the adsorption tower Ads.B is respectively connected with one ends of a pneumatic butterfly valve V8, a one-way valve V4 and a stop valve V19 through pipelines, and a pressure sensor PT2 is arranged on the pipelines. The other ends of the one-way valves V3 and V4 are connected through a pipeline, and a compressed air outlet N2 is formed in the pipeline. The other end of the stop valve V19 is connected with the other end of the angle seat valve V20 through a pipeline. The other ends of the pneumatic butterfly valves V7 and V8 are connected with the outlet of the electric heater H1 and one end of the pneumatic butterfly valve V11 through pipelines, and a temperature sensor TT1 is mounted on the pipelines. The other end of the pneumatic butterfly valve V11 is connected with one end of a cooler HE02, the other end of the cooler HE02 is connected with a suction inlet of a blower K1 and an outlet of a filter F1 through pipelines, and a regeneration air inlet N3 is formed in the filter F1. The cooler HE02 is provided with a cooling water inlet N5 and a cooling water outlet N6. The inlet of the electric heater H1 is connected with one end of the steam heat exchanger HE01 through a pipeline. The other end of the steam heat exchanger HE01 is connected with one end of a pneumatic butterfly valve V10 through a pipeline. The outlet of the blower K1 is connected with the other ends of the pneumatic butterfly valve V10 and the pneumatic butterfly valve V13 through a pipeline, and a pressure sensor PT3 is arranged on the pipeline. The steam heat exchanger HE01 is provided with a steam inlet N7 and a condensate outlet N8.
When the blast heat absorption dryer is used, a compressed air inlet N1 and a compressed air outlet N2 of the dryer are required to be in butt joint with a client compressed air pipe network. Regeneration gas vent N4 needs to be directed by the customer to the appropriate discharge location. The cooling water inlet N5 and the cooling water outlet N6 are in butt joint with a customer cooling water system, and the steam inlet N7 and the condensed water outlet N8 are in butt joint with a customer steam pipe network.
When the equipment works (taking the regeneration of the adsorption tower Ads.A and the adsorption of the adsorption tower Ads.B as examples), the regeneration process of the adsorption tower Ads.A needs to undergo the processes of pressure relief, heating, cooling, pressure boosting, standby and switching when the adsorption tower Ads.B keeps adsorbing. The valves of the stop valves V17, V18 and V19 are always kept in an open state in each process. Pressure gauges PG1, PG2 show the pressures of the adsorption columns ads.a and ads.b, respectively.
In the pressure relief stage, the pneumatic butterfly valve V2, the one-way valve V4 and the angle seat valve V15 are opened, and the rest valves are closed. At the moment, compressed air enters from a compressed air inlet N1, enters the adsorption tower Ads.B through a pneumatic butterfly valve V2, is adsorbed by the adsorbent in the tower to remove moisture, and then is discharged from a compressed air outlet N2 through a one-way valve V4. While the compressed air in the adsorption tower ads.a is discharged to the ambient atmosphere via the angle seat valve V15 and the silencer S1. The pressure in the adsorption column ads.a is reduced to atmospheric pressure.
In the heating stage, the pneumatic butterfly valves V2, V5, V7, V10 and V12 are opened, the one-way valve V4 is kept opened, and the rest valves are closed. The flow conditions of the compressed air are still similar to those during the pressure release phase. The adsorption column ads.a is different. At the moment, the blower K1 starts to work, the regeneration gas is sucked from a regeneration air inlet N3, filtered by a filter F1, enters the blower K1, pressurized by the blower K1, passes through a pneumatic valve V10, enters a heat exchange cavity of a steam heat exchanger HE01 and a heating cavity of an electric heater H1, is heated to a proper regeneration temperature, enters the adsorption tower Ads.A through a pneumatic butterfly valve V7, heats and regenerates the adsorbent, and the regeneration gas flowing through the adsorbent is discharged to the atmospheric environment through the pneumatic butterfly valves V5, V12 and a regeneration gas exhaust port N4.
In the cooling stage, the pneumatic butterfly valves V2, V5, V7, V11 and V13 are opened, the one-way valve V4 is kept opened, and the rest valves are closed. The flow state of the compressed air is still similar to that in the pressure relief stage. Adsorption column ads.a is different. At the moment, the blower K1 still works, the regenerated gas enters the blower K1 from the cooler HE02, is pressurized by the blower K1 and then enters the bottom of the adsorption tower Ads.A through the pneumatic butterfly valves V13 and V5, and the adsorbent is cooled. The regeneration gas enters the cooler HE02 from the top of the adsorption tower Ads.A through pneumatic butterfly valves V7 and V11. The regeneration gas is cooled by the cooler HE02 and then sucked by the blower again.
In the pressure boosting stage, the pneumatic angle seat valve V20 is opened, the pneumatic butterfly valve V2 and the one-way valve V4 are kept open, and the rest valves are closed. The dry compressed air enters the adsorption tower Ads.A from the adsorption tower Ads.B through a stop valve V19 and an angle seat valve V20. The pressure of the adsorption column ads.a is gradually increased to be equal to the pressure of the adsorption column ads.b.
In the standby stage, the valve state is consistent with the pressure boosting stage. The device waits for a switch signal.
In the switching stage, the pneumatic valves V1 and V2 are opened, and the check valves V3 and V4 are opened. Compressed air enters the adsorption tower Ads.A and the adsorption tower Ads.B from a compressed air inlet N1 through pneumatic butterfly valves V1 and V2 respectively, and after moisture in the compressed air is adsorbed by an adsorbent in the tower, the compressed air is collected to a compressed air outlet N2 through valves V3 and V4 for users to use.
The adsorption tower Ads.A adsorbs the waste gas, and when the adsorption tower Ads.B regenerates, the working process is similar to the valve switching state.
Claims (5)
1. The novel blowing steam heat exchange regeneration suction dryer mainly comprises a pneumatic butterfly valve, a one-way valve, a stop valve, a pneumatic angle seat valve, a silencer, an air blower, a steam heat exchanger, an electric heater, a cooler, a temperature sensor, a thermometer, a pressure gauge, a pressure sensor, an adsorption tower, a filter and a pipeline.
2. The novel blowing steam heat exchange regeneration suction dryer as claimed in claim 1, characterized in that the heating mode of the regeneration gas of the device is a combination of steam heat exchange and electric heating in series.
3. The novel air blast steam heat exchange regeneration suction dryer as claimed in claim 1, characterized in that a pneumatic switching valve is not installed at the inlet of the steam heat exchanger, and the steam heat exchanger and the cooler are not connected in series in one working loop, but two working loops are formed by switching the valve.
4. The novel blowing steam heat exchange regeneration suction dryer as claimed in claim 1, characterized in that the working process of the heating stage is as follows: the regeneration gas is sucked from a regeneration air inlet N3, is filtered by a filter F1, enters a blower K1, is pressurized by the blower K1, passes through a pneumatic valve V10, enters a heat exchange cavity of a steam heat exchanger HE01 and a heating cavity of an electric heater H1, is heated to a proper regeneration temperature, passes through a pneumatic butterfly valve V7, enters an adsorption tower Ads.A to heat and regenerate the adsorbent, and the regeneration gas flowing through the adsorbent is discharged to the atmospheric environment through the pneumatic butterfly valves V5, V12 and a regeneration gas exhaust port N4.
5. The novel blast steam heat exchange regeneration dryer as claimed in claim 1, characterized in that the working process of the cooling stage is as follows: the regeneration gas enters a blower K1 from a cooler HE02, is pressurized by a blower K1 and then enters the bottom of an adsorption tower Ads.A through pneumatic butterfly valves V13 and V5, and after the adsorbent is cooled, the regeneration gas enters a cooler HE02 from the top of the adsorption tower Ads.A through pneumatic butterfly valves V7 and V11; the regeneration gas is cooled by the cooler HE02 and then sucked by the blower again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910747038.8A CN111298605A (en) | 2019-08-14 | 2019-08-14 | Novel blowing steam heat exchange regeneration suction dryer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910747038.8A CN111298605A (en) | 2019-08-14 | 2019-08-14 | Novel blowing steam heat exchange regeneration suction dryer |
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| CN111298605A true CN111298605A (en) | 2020-06-19 |
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| CN201910747038.8A Pending CN111298605A (en) | 2019-08-14 | 2019-08-14 | Novel blowing steam heat exchange regeneration suction dryer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113724676A (en) * | 2021-08-30 | 2021-11-30 | 德格瑞(南通)压缩空气净化设备有限公司 | Sectional type throttle silencing device |
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|---|---|---|---|---|
| FR2234917A1 (en) * | 1973-06-27 | 1975-01-24 | Stein Industrie | Turbine steam dried by moisture separator - using stack of almost horizontal separator plates |
| CN201823451U (en) * | 2010-08-31 | 2011-05-11 | 杭州日盛净化设备有限公司 | Blast heating internal circulation compressed air purifying device |
| CN202442092U (en) * | 2011-12-20 | 2012-09-19 | 上海烟草集团有限责任公司 | Condensed water draining device |
| CN204051394U (en) * | 2014-07-11 | 2014-12-31 | 上海振世能源科技有限公司 | Zero gas damages absorbed type drying system |
| JP2015045483A (en) * | 2013-08-29 | 2015-03-12 | 文雄 高崎 | Power generation system and power generation method |
| WO2016034787A1 (en) * | 2014-09-01 | 2016-03-10 | Ereie - Energy Research Innovation Engineering | Method for dehumidifying humid air |
| CN209020135U (en) * | 2018-10-18 | 2019-06-25 | 宿迁新亚科技有限公司 | A kind of temp.-changing adsorption agent regenerating unit |
| CN210845822U (en) * | 2019-08-14 | 2020-06-26 | 德格瑞(南通)压缩空气净化设备有限公司 | Novel blowing steam heat exchange regeneration suction dryer |
-
2019
- 2019-08-14 CN CN201910747038.8A patent/CN111298605A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2234917A1 (en) * | 1973-06-27 | 1975-01-24 | Stein Industrie | Turbine steam dried by moisture separator - using stack of almost horizontal separator plates |
| CN201823451U (en) * | 2010-08-31 | 2011-05-11 | 杭州日盛净化设备有限公司 | Blast heating internal circulation compressed air purifying device |
| CN202442092U (en) * | 2011-12-20 | 2012-09-19 | 上海烟草集团有限责任公司 | Condensed water draining device |
| JP2015045483A (en) * | 2013-08-29 | 2015-03-12 | 文雄 高崎 | Power generation system and power generation method |
| CN204051394U (en) * | 2014-07-11 | 2014-12-31 | 上海振世能源科技有限公司 | Zero gas damages absorbed type drying system |
| WO2016034787A1 (en) * | 2014-09-01 | 2016-03-10 | Ereie - Energy Research Innovation Engineering | Method for dehumidifying humid air |
| CN209020135U (en) * | 2018-10-18 | 2019-06-25 | 宿迁新亚科技有限公司 | A kind of temp.-changing adsorption agent regenerating unit |
| CN210845822U (en) * | 2019-08-14 | 2020-06-26 | 德格瑞(南通)压缩空气净化设备有限公司 | Novel blowing steam heat exchange regeneration suction dryer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113724676A (en) * | 2021-08-30 | 2021-11-30 | 德格瑞(南通)压缩空气净化设备有限公司 | Sectional type throttle silencing device |
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