CN212383455U - Dryer and compressor installation for compressed gas - Google Patents
Dryer and compressor installation for compressed gas Download PDFInfo
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- CN212383455U CN212383455U CN202020154648.5U CN202020154648U CN212383455U CN 212383455 U CN212383455 U CN 212383455U CN 202020154648 U CN202020154648 U CN 202020154648U CN 212383455 U CN212383455 U CN 212383455U
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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
- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
- B01D53/06—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 by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
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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
- B01D53/265—Drying gases or vapours by refrigeration (condensation)
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
- B01D2259/40043—Purging
- B01D2259/4005—Nature of purge gas
- B01D2259/40052—Recycled product or process gas
- B01D2259/40054—Recycled product or process gas treated before its reuse
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40086—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by using a purge gas
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- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Drying Of Gases (AREA)
Abstract
A dryer and a compressor apparatus for compressing a gas. A dryer for compressed gas includes a pressure vessel; a drum provided with a regenerable desiccant; drive means for rotating the drum such that the desiccant moves successively through the drying zone and the regeneration zone; an inlet for supplying compressed gas to be dried towards the drying zone; and an outlet for discharging the dried compressed gas. The dryer further comprises at least one cooling device for cooling the gas to be dried, the cooling device having a first cooling circuit, which is provided for cooling the gas to be dried by means of a first cooling medium, and a second cooling circuit downstream of the first cooling circuit, which is provided for further cooling the gas to be dried by means of a second cooling medium having a lower temperature than the first cooling medium.
Description
Technical Field
The utility model relates to a compressor equipment that is used for gaseous desiccator of compressed and is provided with this kind of desiccator.
Background
Dryers for compressed gas are known, which are provided with a pressure vessel comprising a drying zone and a regeneration zone and possibly a cooling zone; a rotatable drum with regenerable desiccant is also included in the pressure vessel. The pressure vessel comprises an inlet for supplying compressed gas to be dried into the drying zone and an outlet for discharging the dried gas. Hot regeneration gas is introduced into the regeneration zone to regenerate the desiccant. The dryer further comprises drive means for rotating the drum such that the desiccant moves successively through the drying zone and the regeneration zone.
Compressed gas which has been heated by compression and therefore has a low relative moisture content can be used as regeneration gas for regenerating the desiccant. In a first known embodiment, a portion of the supply flow of compressed gas is discharged for regeneration and subsequently reintroduced into the compressed gas flow. In a second known embodiment, a portion of the discharge flow of dry compressed gas is discharged and heated for regeneration, and then reintroduced into the compressed gas flow. In a third known embodiment, the entire supply flow of compressed gas to be dried is first led through the regeneration zone and subsequently through the drying zone.
Other embodiments are also known, for example as disclosed in WO 2015/039193 a 2.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to remedy one or more of the drawbacks of the prior art.
It is a further object of the invention to provide a dryer or drying device for compressed gas, with which the performance of the dried, compressed gas can be improved (for example with which the pressure dew point can be reduced).
The compressed gas may be, for example, air, but it may be another gas. The dried gas can be used in a downstream pressurized air network for a wide range of purposes, such as for pneumatic transport, driving of pneumatic tools, etc.
The term "downstream" as used herein always refers to downstream with respect to the flow direction of the compressed gas, unless explicitly stated otherwise.
In a first aspect which may be combined with other aspects or embodiments described herein, the present invention provides a dryer or drying apparatus for drying compressed gas, the dryer or drying apparatus comprising a pressure vessel having a rotationally symmetric (e.g., cylindrical) portion with a drying zone and a regeneration zone therein; a drum disposed in the rotationally symmetric portion, the drum being provided with a regenerable desiccant; drive means for rotating the drum relative to the rotationally symmetric part, i.e. rotating the drum and/or the rotationally symmetric part, such that the desiccant moves successively through the drying zone and the regeneration zone; an inlet for supplying compressed gas to be dried towards a drying zone; and an outlet for discharging the dried compressed gas. The dryer further comprises at least one cooling device for cooling the gas to be dried supplied to the drying zone, said cooling device utilizing a first cooling medium. At least one of the cooling devices comprises a first cooling circuit arranged for cooling the gas to be dried using a first cooling medium and a second cooling circuit downstream of the first cooling circuit arranged for further cooling the gas to be dried using a second cooling medium having a lower temperature than the first cooling medium.
According to the utility model discloses, through utilizing this kind of cooling device who has first cooling circuit and second cooling circuit, can realize treating the more abundant cooling of dry gas. By these means, the properties of the dried compressed gas at the outlet can be improved, for example a lower pressure dew point can be achieved. By providing these circuits in the same (single) cooling device, more adequate cooling can be achieved without causing additional pressure drops in the associated lines or conduits.
In an embodiment according to the invention, it is possible for at least one of the cooling devices that the first cooling medium and the second cooling medium consist of the same cooling medium, wherein the dryer may have an additional cooling device for cooling this cooling medium before (upstream of) the second cooling circuit. In such an embodiment, the cooling device may be arranged for connection to a cooling water circuit, which may be, for example, a cooling water circuit of an industrial plant. The additional cooling means may be, for example, a chiller.
In an embodiment according to the invention, it is possible for at least one of the cooling devices that the first cooling circuit is connected to a first cooling medium, for example a cooling water circuit, and the second cooling circuit is separately connected to a second cooling medium, for example an ice water circuit. Such an embodiment is advantageous for use in industrial plants where both a cooling water circuit and an ice water circuit are present.
In an embodiment according to the invention, such a cooling device with a first circuit and a second circuit may be provided in the supply line for the compressed gas to be dried and/or in the connecting line joining the gas for regeneration with the supplied compressed gas to be dried and/or in the supply line downstream of the location where the gas for regeneration joins the supplied compressed gas to be dried.
In an embodiment according to the invention, at least one cooling device may be provided for receiving control signals from a control unit (e.g. a control unit controlling the operation of the dryer and measuring one or more process parameters for this purpose).
Another aspect of the present invention relates to a compressor apparatus comprising a compressor and a dryer according to one of the aspects or embodiments described herein.
In one aspect, the present invention provides a dryer for compressed gas, the dryer comprising: a pressure vessel comprising a rotationally symmetric portion having a drying zone and a regeneration zone therein; a drum disposed in the rotationally symmetric portion, the drum being provided with a regenerable desiccant; drive means for rotating the drum relative to the rotationally symmetric portion or rotating the rotationally symmetric portion relative to the drum such that the regenerable desiccant moves through the drying zone and the regeneration zone in succession; an inlet for supplying compressed gas to be dried towards the drying zone; an outlet for discharging a dry compressed gas; and at least one cooling device for cooling the gas to be dried supplied to the drying zone, the at least one cooling device utilizing a first cooling medium; wherein at least one of the cooling devices comprises a first cooling circuit arranged for cooling the gas to be dried by means of the first cooling medium and a second cooling circuit downstream of the first cooling circuit arranged for further cooling the gas to be dried by means of a second cooling medium having a lower temperature than the first cooling medium.
In one configuration, for at least one of the cooling devices, the first cooling medium and the second cooling medium are the same cooling medium, and the dryer has an additional cooling device for cooling the cooling medium before the second cooling circuit.
In one configuration, the cooling device is configured for connection to a cooling water circuit.
In one configuration, the additional cooling device is a chiller.
In one configuration, for at least one of the cooling devices, the first cooling circuit and the second cooling circuit are separately connected to different cooling media.
In one configuration, the first cooling circuit is connected to a cooling water circuit and the second cooling circuit is connected to an ice water circuit.
In one configuration, the cooling device is arranged in a supply line for the compressed gas to be dried.
In one configuration, the cooling device is arranged in a first connecting line which merges the gas for regeneration with the compressed gas to be dried.
In one configuration, the cooling device is provided in a second connecting line located downstream of the point where the gas for regeneration merges with the supply of compressed gas to be dried.
In one configuration, the cooling device is configured to receive a control signal.
In one configuration, the dryer comprises a control unit arranged to generate the control signal based on one or more measured process parameters.
In another aspect, the invention provides a compressor installation comprising a compressor and a dryer according to the preceding.
Drawings
The invention will be described in more detail below with reference to exemplary embodiments thereof as shown in the drawings.
Fig. 1 shows a first embodiment of a compressor installation comprising a dryer according to the invention.
Fig. 2 shows a second embodiment of a compressor installation comprising a dryer according to the invention.
Fig. 3 and 4 show details of an embodiment of a cooling device applied in the embodiment according to fig. 1 and 2.
Detailed Description
The present invention will be described with respect to certain embodiments and with reference to certain drawings but the invention is not limited thereto but only by the claims. The drawings described are only schematic and are non-limiting in scope. In the drawings, the size of some of the elements may be exaggerated and not drawn on scale; this is for illustrative purposes. The dimensions (and relative dimensions) do not necessarily correspond to actual embodiments of the invention.
Furthermore, the terms first, second, third and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. The terms are interchangeable under appropriate circumstances and the embodiments of the invention can be used in other sequences than described or illustrated herein.
In addition, the terms "topmost," "upper," "bottommost," "lower," "above," "below," and the like in the description and in the claims are used for descriptive purposes and not necessarily for describing relative positions. The terms are interchangeable under appropriate circumstances and the embodiments of the invention described herein can be used in other orientations than described or illustrated herein.
In addition, the various embodiments which may be described as "preferred embodiments" should be understood only as exemplary means and modes for carrying out the invention in practice and should not be taken as limiting the scope of the invention.
The term "comprising" as used in the claims should not be interpreted as being limited to the means or steps mentioned hereinafter; the term does not exclude other elements or steps. The terms are to be interpreted as specifying the presence of the stated features, elements, steps or components as referred to, but do not preclude the presence or addition of one or more other features, elements, steps or components, or groups thereof. Thus, the scope of the expression "a device or apparatus comprising means a and B" should not be taken to be limited to devices or apparatuses consisting only of components a and B. It is intended that for the purposes of this invention, only the parts a and B of the device are specifically mentioned, but the claims should be further construed to include equivalents of these parts.
In the embodiments of the compressor installation shown in fig. 1 and 2, the compressor 60 is provided in each case with a dryer 10 for compressed gas; 30. in each case, the dryer comprises a pressure vessel 11 comprising a rotationally symmetrical portion in which a drying zone 12 and a regeneration zone 13 are defined; a drum 14 provided in the rotationally symmetric portion and provided with a regenerative drying device; drive means for rotating the drum relative to the rotationally symmetrical part, i.e. causing the drum to rotate in the rotationally symmetrical part, or causing the rotationally symmetrical part to rotate around a stationary drum, such that the drying means moves successively through the drying zone and the regeneration zone. Preferably, the rotationally symmetric portion is cylindrical; however, this is not essential and other rotationally symmetrical shapes are possible. The dryer further comprises an inlet 15 connected to the inlet side of the drying zone of the pressure vessel 11 for supplying compressed gas to be dried; and an outlet 16 connected to the outlet side of the drying zone of the pressure vessel 11, arranged for discharging the dried compressed gas. The gas to be dried is supplied by a compressor 60, which compressor 60 may comprise a first compression stage 61, a second compression stage 62 and an intermediate cooler ("intercooler") ("IC") 63. In the transfer line from the compressor 60 to the inlet 15, the compressed gas may pass through a heat exchanger (heat exchanger, HE)64 and/or a cooling device (aftercooler, "AC") 65.
In the embodiment according to fig. 1 and 2, a connecting line 17 is provided on the outlet side of the dryer for discharging (drawing off) a partial stream of dried compressed gas. This partial stream is led through a heat exchanger 64 for heating with the heat present in the supply stream as a result of compression and is subsequently led further to the regeneration zone 13. In other embodiments, at the outlet side of the compressor 60, a portion of the compressed gas to be dried (which has an elevated temperature due to compression) is discharged and directed to a regeneration zone for regeneration. In a further embodiment, the entire supply flow of compressed gas to be dried is first led through the regeneration zone and subsequently through the drying zone. Other embodiments (of known dryers) are also known, for example as disclosed in WO 2015/039193 a 2.
In the above-described embodiments, including the embodiment according to fig. 1 and 2, the partial flow for regeneration is returned via a connecting line 19 to the main line 18 for supplying the compressed gas flow to be dried. This occurs via a device such as a venturi ejector 21 or other device (e.g., a blower) for creating a pressure differential and maintaining a partial flow for regeneration. One or more cooling devices, such as the illustrated after cooler 65 ("after cooler AC"), and/or the regenerative cooler 20 ("regenerative cooler RC") and/or the process cooler 22 ("process cooler PC"), may be provided in the connecting line 19 and/or in the main line 18, and/or at the inlet 15 (after the merging point).
At least one of these cooling devices 20, 22, 65 comprises a first cooling circuit 31 and a second cooling circuit 32 downstream of the first cooling circuit, the first cooling circuit 31 being provided for cooling the gas to be dried by means of a first cooling medium, for example cooling water, and the second cooling circuit 32 being provided for further cooling the gas to be dried by means of a second cooling medium, such as ice water, which is at a lower temperature than the first cooling medium.
Fig. 3 and 4 show two possible embodiments of these cooling means (20, 22, 65).
In the embodiment according to fig. 3, the first cooling circuit 31 is connected to a first cooling medium, such as a cooling water circuit, and the second cooling circuit 32 is separately connected to a second cooling medium, such as an ice water circuit. Such an embodiment is advantageous for use in industrial plants where both a cooling water circuit and an ice water circuit are present. More generally, such an embodiment may be advantageously used in industrial plants where there are two different cooling medium circuits with cooling media at different temperatures.
In the embodiment according to fig. 4, the first cooling medium and the second cooling medium are the same cooling medium, wherein the dryer may have an additional cooling device 33 for cooling the cooling medium before the inlet of the second cooling circuit. In such an embodiment, a cooling device may be provided, for example for connection to a cooling water circuit, for example of an industrial plant. The additional cooling device 33 may be, for example, a chiller.
The cooling device according to fig. 3 and 4 may be provided in the compressor and dryer apparatus in the supply line 18 for the compressed gas to be dried, and/or in the connecting line 19 joining the gas for regeneration and the supplied compressed gas to be dried, and/or in the supply line 23 downstream of the joining of the gas for regeneration and the supplied compressed gas to be subjected to drying, i.e. between the venturi ejector 21 and the inlet 15.
At least one of the cooling devices 20, 22, 65 may be arranged for receiving a control signal from a control unit, e.g. a control unit controlling the operation of the dryer and measuring one or more process parameters for this purpose.
Claims (12)
1. A dryer (10; 30) for compressed gas, the dryer comprising:
a pressure vessel (11) comprising a rotationally symmetric portion having therein a drying zone (12) and a regeneration zone (13);
a drum (14) disposed in the rotationally symmetric portion, the drum being provided with a regenerable desiccant;
drive means for rotating the drum relative to the rotationally symmetric portion or rotating the rotationally symmetric portion relative to the drum such that the regenerable desiccant moves through the drying zone and the regeneration zone in succession;
an inlet (15) for supplying compressed gas to be dried towards the drying zone;
an outlet (16) for discharging dry compressed gas; and
at least one cooling device (20, 22, 65) for cooling the gas to be dried supplied to the drying zone, the at least one cooling device utilizing a first cooling medium;
characterized in that at least one of the cooling devices comprises a first cooling circuit (31) and a second cooling circuit (32) downstream of the first cooling circuit, the first cooling circuit (31) being arranged for cooling the gas to be dried by means of the first cooling medium, the second cooling circuit (32) being arranged for further cooling the gas to be dried by means of a second cooling medium having a lower temperature than the first cooling medium.
2. Drier for compressed gas according to claim 1, characterized in that for at least one of the cooling means the first and the second cooling medium are the same cooling medium and that the drier has an additional cooling means (33) before the second cooling circuit (32) for cooling the cooling medium.
3. The dryer for compressed gas according to claim 2, wherein the cooling means are provided for connection to a cooling water circuit.
4. Drier for compressed gas according to claim 2 or 3, characterized in that the additional cooling means (33) is a chiller.
5. Drier for compressed gases according to claim 1, characterized in that for at least one of the cooling means the first cooling circuit (31) and the second cooling circuit (32) are separately connected to different cooling media.
6. Drier for compressed gas according to claim 5, characterized in that the first cooling circuit (31) is connected to a cooling water circuit and the second cooling circuit (32) is connected to an ice water circuit.
7. Drier for compressed gas according to one of the claims 1 to 3 and 5 to 6, characterized in that the cooling means are provided in the supply line (18) for the compressed gas to be dried.
8. Drier for compressed gas according to one of the claims 1 to 3 and 5 to 6, characterized in that the cooling means are arranged in the first connecting line (19) joining the gas for regeneration and the compressed gas to be dried.
9. Drier for compressed gas according to one of the claims 1 to 3 and 5 to 6, characterized in that the cooling means are arranged in a second connecting line (23), the second connecting line (23) being located downstream of the point where the gas for regeneration merges with the supply of compressed gas to be dried.
10. Drier for compressed gas according to one of the claims 1 to 3 and 5 to 6, characterized in that the cooling means are arranged to receive control signals.
11. Dryer for compressed gas according to claim 10, characterized in that it comprises a control unit which is arranged to generate the control signal on the basis of one or more measured process parameters.
12. Compressor installation, characterized in that it comprises a compressor and a dryer according to one of the preceding claims.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BEBE2019/5538 | 2019-08-16 | ||
| BE20195538A BE1027505B1 (en) | 2019-08-16 | 2019-08-16 | Dryer for compressed gas, compressor installation equipped with dryer and method for drying compressed gas. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212383455U true CN212383455U (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020154648.5U Active CN212383455U (en) | 2019-08-16 | 2020-02-06 | Dryer and compressor installation for compressed gas |
| CN202010081456.0A Pending CN112387085A (en) | 2019-08-16 | 2020-02-06 | Dryer, compressor installation and method for drying compressed gas |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010081456.0A Pending CN112387085A (en) | 2019-08-16 | 2020-02-06 | Dryer, compressor installation and method for drying compressed gas |
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| Country | Link |
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| CN (2) | CN212383455U (en) |
| BE (1) | BE1027505B1 (en) |
| DE (1) | DE202020003498U1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112387085A (en) * | 2019-08-16 | 2021-02-23 | 阿特拉斯·科普柯空气动力股份有限公司 | Dryer, compressor installation and method for drying compressed gas |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE8500584L (en) * | 1985-02-08 | 1986-08-09 | Munters Ab Carl | SET AND DEVICE FOR CONDITIONING GAS |
| US6711907B2 (en) * | 2001-02-28 | 2004-03-30 | Munters Corporation | Desiccant refrigerant dehumidifier systems |
| US20100281893A1 (en) * | 2009-05-11 | 2010-11-11 | Stulz Air Technology Systems, Inc. | Desiccant dehumidifier utilizing hot water for reactivation, and related method |
| BE1018854A3 (en) * | 2009-08-11 | 2011-10-04 | Atlas Copco Airpower Nv | DRYER FOR COMPRESSED GAS AND METHOD THEREFORE APPLIED. |
| BE1018590A3 (en) * | 2009-10-30 | 2011-04-05 | Atlas Copco Airpower Nv | DEVICE FOR COMPRESSING AND DRYING GAS AND A METHOD THEREOF |
| DE202014007507U1 (en) * | 2013-09-18 | 2014-12-12 | Atlas Copco Airpower N.V. | Dryer for compressed gas and compressor unit equipped with a dryer |
| BE1022637A9 (en) * | 2014-12-16 | 2016-10-06 | Atlas Copco Airpower Nv | DRYER FOR COMPRESSED GAS COMPRESSOR INSTALLATION EQUIPPED WITH DRYER AND METHOD FOR DRYING GAS |
| BE1024396B1 (en) * | 2016-10-25 | 2018-02-13 | Atlas Copco Airpower Naamloze Vennootschap | Compressor installation with drying device for compressed gas and method for drying compressed gas. |
| CN207591574U (en) * | 2017-08-31 | 2018-07-10 | 云威能源科技（上海）有限公司 | A kind of compressed gas drying device |
| BE1027505B1 (en) * | 2019-08-16 | 2021-03-15 | Atlas Copco Airpower Nv | Dryer for compressed gas, compressor installation equipped with dryer and method for drying compressed gas. |
-
2019
- 2019-08-16 BE BE20195538A patent/BE1027505B1/en active IP Right Grant
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2020
- 2020-02-06 CN CN202020154648.5U patent/CN212383455U/en active Active
- 2020-02-06 CN CN202010081456.0A patent/CN112387085A/en active Pending
- 2020-08-14 DE DE202020003498.3U patent/DE202020003498U1/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112387085A (en) * | 2019-08-16 | 2021-02-23 | 阿特拉斯·科普柯空气动力股份有限公司 | Dryer, compressor installation and method for drying compressed gas |
Also Published As
| Publication number | Publication date |
|---|---|
| DE202020003498U1 (en) | 2020-10-07 |
| BE1027505A1 (en) | 2021-03-10 |
| CN112387085A (en) | 2021-02-23 |
| BE1027505B1 (en) | 2021-03-15 |
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