Device and method for drying compressed gas coming from a compressor - Patents.com

Abstract

According to one embodiment, a device for drying gas (300, 700) wet compressed by a compressor (101) is provided, comprising a supply source (100), adsorption dryers (102, 103), a cooler (104), a water separator (105), a drain (106), and conduits and valves (200-208), the device comprising a main channel (800) connected to the supply source (100) and suction channels (802, 803) connected to the adsorption dryers (102, 103). 01), and the conduits and valves (200-208) are configured to mix, using the ejector manifold (107, 600), a portion of the dried compressed gas (301, 701) via the suction channels (802, 801) during the drying stages (402, 403, 502, 503) with the wet compressed gas (300, 700) in the source (100) via the main channel (800).

Description

[Technical Field]

[0001] The present invention relates to a device and method for drying compressed gas, and more particularly to a device and method for drying compressed gas from a compressor. [Background technology]

[0002] The compressed gas, e.g., air, coming out of the compressor usually has a high moisture content, which can be harmful to the pipeline network and is undesirable in some applications, so that, as is known, a device for drying the compressed gas is required.

[0003] BE1010132A3 discloses a method and device for drying gas compressed by a compressor, in which the compressed gas is dried by passing it through a desiccant, while at the same time, already used desiccant is regenerated by passing it through a portion of the compressed gas supplied by the compressor.

[0004] A similar method and device is disclosed in BE1027364A1, in which a heating means and a venturi ejector are provided to exchange heat between the regeneration gas and the incoming compressed gas from the compressor to reduce the regeneration time.

[0005] The drawback of these known methods and devices is that they take too long to regenerate and / or increase the complexity of the entire installation together with the technical control aspects of controlling the installation. In other words, a compromise must always be made between the economic benefits of short regeneration times on the one hand and the optimization of the technology by reducing the complexity of the installation on the other hand. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] BE1010132A3 [Patent Document 2] BE1027364A1 Summary of the Invention [Problem to be solved by the invention]

[0007] It is therefore an object of the present invention to provide a device and method that overcomes one or more of the described drawbacks of prior art solutions. More specifically, it is an object of the present invention to provide a device and method that provides faster desiccant regeneration times without unnecessarily complicating the device and associated method. [Means for solving the problem]

[0008] According to the present invention, the object set out in the preceding paragraph is achieved by providing a device as set out in claim 1 according to a first aspect of the present invention, the device comprising a source suitable for supplying moist compressed gas, first and second adsorption dryers suitable for being filled with a desiccant, a cooler and a water separator, a drain suitable for discharging the dried compressed gas, and a set of conduits and valves configured to transfer the moist compressed gas successively from the source to the first and second adsorption dryers, respectively, the cooler and water separator, the second and first adsorption dryers, respectively, and the drain in a first regeneration stage and a second regeneration stage, respectively; A device further configured to continuously transfer wet compressed gas from a source to a cooler and water separator, a second adsorption dryer and a first adsorption dryer, respectively, and a drain in the first drying stage and the second drying stage, respectively, wherein the device further includes an ejector manifold including a main channel and a first suction channel and a second suction channel, the main channel connecting to the source, and the first suction channel and the second suction channel connecting to the first adsorption dryer and the second adsorption dryer, respectively, and the set of conduits and valves is further configured to use the ejector manifold to mix a portion of the dried compressed gas via the suction channel during the drying stage with the wet compressed gas at the source via the main channel.

[0009] The device includes means known in the prior art, such as two adsorption dryers, a source and a drain, and a cooling facility including a cooler and a water separator. Furthermore, the device includes a set of conduits and valves that connect the various means and components to each other and that may have various functions performed by the state positions of the valves, also called vents. As a result, the device can be used to perform both a regeneration step and a drying step.

[0010] According to the regeneration steps known in the prior art, the hot, moist, compressed gas coming directly from the compressor is passed through an adsorption dryer to heat the desiccant therein and thus extract moisture, while another adsorption dryer is used to dry the moist, compressed gas from the compressor, and after the dryer has cooled, the condensate is withdrawn from it. The regeneration and drying steps alternate between the adsorption dryers to ensure the continuity of the dryers.

[0011] To address the known shortcomings in the prior art listed above, the device further includes an ejector manifold.

[0012] The ejector manifold includes a main channel through which fluid can flow and two suction channels in hydrodynamic communication with the main channel. By allowing fluid to flow through the main channel, a negative pressure is applied to the suction channels, such that fluid present in the first and / or second suction channels or in conduits connected thereto is drawn into the main channel by the applied negative pressure.

[0013] The ejector manifold is configured and connected to allow the moist compressed gas produced by the compressor to flow through the main channel. The two suction channels are each connected to a respective adsorption dryer connection. Due to the negative pressure principle just described, in combination with the arrangement and position of the valves, a portion of the compressed gas that has already been cooled and passed through the adsorption dryer will be mixed with the moist, hot compressed gas produced directly by the compressor. This is achieved by arranging the valve set so that this portion can be mixed with the moist, hot compressed gas, while the other portion, and therefore the unmixed portion, is sent to drain.

[0014] The innovative aspect of the use of a single ejector manifold within a device for drying gas wet compressed by a compressor can be arranged within the device in two distinctly different configurations.

[0015] According to a first method, the ejector manifold can be connected to the adsorption dryers in such a way that the portions mixed via the suction channel in the two drying stages are passed successively through a cooler and a water separator, and through the second adsorption dryer in the first drying stage and the first adsorption dryer in the second drying stage, respectively. This arrangement is hereinafter referred to as the first configuration.

[0016] According to a second method, the ejector manifold can be connected to the adsorption dryers in the second drying stage such that the mixed portion via the suction channel is passed successively through the cooler and water separator, and through the first adsorption dryer in the first drying stage and the second adsorption dryer in the second drying stage, this arrangement hereinafter being referred to as the second configuration.

[0017] According to the first configuration, during the regeneration stage, the wet compressed gas is passed successively through the first adsorption dryer, the first suction channel, and the cooler and water separator for the first regeneration stage, and through the second adsorption dryer, the second suction channel, and the cooler and water separator for the second regeneration stage. In other words, the state position of the valve or valves is set so that during the regeneration stage, the main channel of the ejector manifold is blocked.

[0018] According to the second configuration, during the regeneration stage, the wet compressed gas is passed through the first suction channel, the first adsorption dryer, the cooler and water separator, the second adsorption dryer, and finally to drain for the first regeneration stage, while for the second regeneration stage, the wet compressed gas is passed through the second suction channel, the second adsorption dryer, the cooler and water separator, the first adsorption dryer, and finally to drain. As in the first configuration, the main channel of the ejector manifold is still blocked.

[0019] The portion of the dried compressed gas that is mixed with the hot moist compressed gas amounts to 15 to 25 percent of the dried compressed gas, preferably 20 percent of the dried compressed gas. In other words, the volume or mass of the input hot moist compressed gas corresponds to 100 percent volume or mass, of which 15 to 25 percent, and preferably 20 percent, circulates internally and 100 percent flows out through the drain. It should be noted, however, that other percentages are not excluded depending on the load of the dryer.

[0020] A first advantage of the described device for drying moist compressed gas produced by a compressor is that, due to the use of an ejector manifold, only a single cooler and water separator are required. This makes the device not only more energy efficient but also cheaper and less complicated to assemble compared to known devices. Since additional components such as a cooler and water separator known in the prior art make the configuration of the conduit and valve set more complicated, this means that the described innovative device is indeed less complicated to assemble. This further reduces the risk of errors during the manufacturing process of the drying device.

[0021] According to both the first and second configurations, the adsorption dryer, and more particularly the desiccant therein, can be regenerated using hot compressed gas.

[0022] In the first configuration, during the drying stage, the adsorption dryer through which the resulting dried, cooled compressed gas flows can be further regenerated, which is an additional advantage over prior art devices. In the first drying stage, this corresponds to the first adsorption dryer, while in the second drying stage, it corresponds to the second adsorption dryer. This is possible because the diverted portion is dried, cooled gas, which in fact ensures further drying of the desiccant present in each adsorption dryer.

[0023] Another advantage of both configurations is that the regeneration and drying stages do not rely on heat present in the hot compressed gas at partial or low compressor loads.

[0024] According to some embodiments, the device further includes a measurement module configured to determine a regeneration status of the adsorption dryer.

[0025] The measurement module is, for example, a dew point meter and / or a set of a pressure gauge, a thermometer and a differential pressure gauge, with which the dew point can be determined indirectly.

[0026] By determining the regeneration state of the adsorption dryer, it can then be determined when to switch between various regeneration and drying stages. To accomplish this, the device may further include a control module that controls a valve or set of valves based on the determined or obtained regeneration state. Alternatively, the control module may be external to the device.

[0027] According to a second aspect of the present invention, there is provided a method for drying gas compressed by a compressor by a first adsorption dryer and a second adsorption dryer, each containing a desiccant, as set forth in claim 8, the method comprising the steps of alternately performing a first regeneration step and a second regeneration step in combination with a first drying step and a second drying step, respectively, wherein the first regeneration step and the second regeneration step each include the steps of regenerating the first adsorption dryer and the second adsorption dryer, respectively, by compressed gas, cooling and separating condensate from the compressed gas, and drying the compressed gas by the second adsorption dryer and the first adsorption dryer, respectively. and a step of drying the compressed gas, wherein the drying step includes alternating steps sequentially including cooling the compressed gas and separating the condensate, thereby obtaining a cooled compressed gas, and drying the cooled compressed gas by a second adsorption dryer and a first adsorption dryer, respectively, thereby obtaining a cooled dried compressed gas, wherein the drying step further includes, prior to the cooling step, passing a portion of the cooled dried compressed gas through the first adsorption dryer and a second adsorption dryer, respectively, and mixing the compressed gas with the portion of the cooled dried compressed gas.

[0028] The method is applicable to devices according to the first configuration described above, in which case the listed advantages also apply.

[0029] According to a third aspect of the present invention, there is provided a method for drying gas compressed by a compressor by a first adsorption dryer and a second adsorption dryer, each containing a desiccant, as set forth in claim 9, comprising the steps of alternately performing a first regeneration step and a second regeneration step, respectively, in combination with a first drying step and a second drying step, respectively, wherein the first regeneration step and the second regeneration step include the steps of regenerating the first adsorption dryer and the second adsorption dryer, respectively, by compressed gas, cooling and separating condensate from the compressed gas, and drying the gas by the second adsorption dryer and the first adsorption dryer, respectively. and a step of drying the compressed gas, wherein the drying step includes alternating steps including successively cooling the compressed gas, thereby obtaining cooled compressed gas, and drying the cooled compressed gas by a second adsorption dryer and a first adsorption dryer, respectively, thereby obtaining cooled dried compressed gas, wherein the drying step further precedes the cooling step and includes a step of passing a portion of the cooled compressed gas through the first adsorption dryer and a second adsorption dryer, respectively, and a step of mixing the compressed gas with the portion of the cooled compressed gas.

[0030] The method is applicable to devices according to the second configuration described above, in which case the listed advantages also apply.

[0031] According to embodiments of both the second and third aspects of the present invention, there is further provided the step of using a portion of the gas to regenerate the desiccant in each of the first and second adsorption dryers.

[0032] This corresponds to the drying stage of the device according to the first aspect of the invention, and regeneration of the desiccant can be carried out during the drying stage by allowing cooled dehumidified gas to be passed through the respective adsorption dryer.

[0033] According to embodiments of both the second and third aspects of the present invention, there is further provided a step of determining a regeneration state of the first adsorption dryer and / or the second adsorption dryer, and the alternating implementation of the first regeneration stage and the second regeneration stage, respectively, in combination with the first drying stage and the second drying stage, respectively, is based on the regeneration state.

[0034] The alternating implementation of the regeneration and drying phases is then further achieved by targeted actuation of the valves or valves so that their respective state positions are changed between open and closed or vice versa.

[0035] According to a fourth aspect of the present invention, there is provided an ejector manifold suitable for a device according to the first aspect and / or for mixing compressed gas with a portion of cooled dried compressed gas by a method according to the second and / or third aspects of the present invention.

[0036] According to a fifth aspect, there is disclosed a use of an ejector manifold according to the fourth aspect.

[0037] According to a sixth aspect, there is disclosed a compressor installation comprising a compressor having an outlet connected to an inlet of a device according to the first aspect.

[0038] The present invention will now be further explained with reference to the drawings.

[0039] 1 to 4 show an orientation for drying compressed gas according to a first configuration and associated method.

[0040] Figures 4 to 8 show a device for drying compressed gas according to a second configuration and an associated method. [Brief explanation of the drawings]

[0041] [Figure 1] 1 is a diagram of a first regeneration stage according to a first configuration of a device for drying compressed gas and an associated method. [Figure 2] 1 is a diagram of a second regeneration stage according to a first configuration of a device for drying compressed gas and an associated method. [Figure 3] 1 is a diagram of a first cooling and drying stage according to a first configuration of a device for drying compressed gas and an associated method. FIG. [Figure 4] 1 is a diagram of a second cooling drying stage according to a first configuration of a device for drying compressed gas and an associated method. FIG. [Figure 5] 1 is a diagram of a first regeneration stage according to a second configuration of a device for drying compressed gas and an associated method. [Figure 6] 10 is a diagram of a second regeneration stage according to a second configuration of the device for drying compressed gas and an associated method. FIG. [Figure 7] 1 is a diagram of a first cooling stage according to a second configuration of a device for drying compressed gas and an associated method. [Figure 8] FIG. 10 is a diagram of a second cooling stage according to a second configuration of the device for drying compressed gas and an associated method. [Figure 9] FIG. 10 is a diagram of an ejector manifold suitable for the device shown in the previous figure. DETAILED DESCRIPTION OF THE INVENTION

[0042] The present invention will be described with reference to certain embodiments and with reference to certain drawings but the invention is not limited thereto but is defined only by the claims. The depicted drawings are solely schematic and non-limiting. In the drawings, for illustrative purposes, the size of some elements may be exaggerated and not drawn to scale. The dimensions and relative dimensions do not necessarily correspond to the practice of the invention.

[0043] Furthermore, the terms first, second, third, etc. are used in the specification and claims to distinguish between similar elements and not necessarily to describe an order or chronology. The terms are interchangeable under appropriate circumstances, and embodiments of the invention may be used in orders other than those described or illustrated herein.

[0044] Furthermore, the terms top, bottom, above, and below are used in the specification and claims for illustrative purposes only and are not necessarily used to describe relative positions. The terms are interchangeable under appropriate circumstances, and the embodiments of the invention described herein may be used in orientations other than those described or illustrated herein.

[0045] Furthermore, various embodiments, also referred to as "preferred embodiments," should not be considered as limiting the scope of the invention, but as illustrating examples of how the invention may be practiced.

[0046] The term "comprising" used in the claims should not be considered as being limited to the means or steps described below, nor should the term exclude other elements or steps. The term should be considered as specifying the presence of the mentioned feature, element, step, or component, but not as excluding 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 comprising means A and B" should not be limited to a device consisting only of components A and B. The meaning is that, although only components A and B of a device are described in relation to the present invention, the claims are further considered to include equivalents of these components as well.

[0047] Figures 1 to 8 show orientations for drying compressed gas, more specifically, Figures 1 to 4 show the device according to a first configuration, and Figures 5 to 8 show the device according to a second configuration.

[0048] The various components of the device according to the first configuration will be considered with reference to Figures 1 and 4. It will therefore be appreciated that these components or parts are also present in Figures 2 to 4. Where there are differences between the devices shown in the various figures, an explanation will be provided.

[0049] In Figure 1, the device is shown in relation to drying compressed gas from a compressor 101. However, it will be appreciated that the compressor 101 itself need not form part of the device itself.

[0050] The device has a supply connected to point 108. Three conduits branch off from point 108 to three valves: valve 202, valve 203, and valve 204. There are also two adsorption dryers 102 and 103. Adsorption dryer 102 is located between valve 202 and valve 205. Adsorption dryer 103 is located between valve 203 and valve 207. Adsorption dryer 102 is also located between valve 200 and valve 206. Adsorption dryer 103 is further located between valve 201 and valve 208.

[0051] In other words, the adsorption dryer has two connections for gas to flow through. For each adsorption dryer in the device, there are two valves per connection. For adsorption dryer 102, these are valves 200 and 202 on one connection and valves 205 and 206 on the other connection. For adsorption dryer 103, these are valves 201 and 203 on one connection and valves 207 and 208 on the other connection.

[0052] 1 through 4 further includes an ejector manifold 107. This ejector manifold 107 is also shown in FIG.

[0053] The ejector manifold 107 shown in Figure 9 is also suitable for a device according to a second configuration, which will be further described and is shown in Figures 5 through 8. The ejector manifold 107 includes a main channel with an inlet 800. This main channel 800 leads to an outlet 803. It should be further noted that at the outlet 803, two suction channels 801 and 802 also converge.

[0054] The operation of the ejector manifold 107 is as follows: A negative pressure is applied to the suction channels 801 and 802 by allowing fluid, and therefore gas or liquid, to flow through the inlet 800 to the outlet 803, which corresponds to the main channel of the ejector manifold 107. As a result, fluid present in the conduits connected to the suction channels 801 and 802 is sucked in. The fluid in the main channel 800 then mixes with the fluid in the conduits connected to the suction channels 801 and 802 and flows out through the outlet 803.

[0055] Ejector manifold 107 is connected such that a main channel with inlet 800 is connected to valve 204, which connects to point 108 and then onto source 100. This arrangement therefore allows hot, moist, compressed gas originating from compressor 101 to flow through the main channel of ejector manifold 107 when the valves are set as further described.

[0056] The suction channels of the ejector manifold 107 are connected to valves 205 and 207, respectively. The outlet of the ejector manifold 107 is therefore connected to the cooler 104 at the junction of the main channel and the two suction channels. After the cooler there is a water separator 105. After the water separator there are branches to valves 206 and 208.

[0057] Finally, the device has a drain 106 that is branched between valve 200 and valve 201 .

[0058] The above-described devices, including components, parts, conduits and sets of conduits, are shown in Figure 1 as well as in Figures 2 to 4.

[0059] The color of the valve indicates its possible state position between closed and open. Thus, in Figure 1, valves 200, 203, 204, 206, and 207 are shown with filled black areas, while valves 201, 202, 205, and 208 are shown with empty white areas. The difference between the two illustrations is that the filled black areas indicate closed valves, while the empty white areas indicate open valves.

[0060] In Figure 1, therefore, the illustration of the valves shows closed valves 200, 203, 204, 206, and 207, and open valves 201, 202, 205, and 208. In Figure 2, the opposite situation is shown, with open valves 200, 203, 206, and 207, and closed valves 201, 202, 205, and 208. In both situations, valve 204 remains closed.

[0061] Considering now further the various regeneration and drying stages of the first configuration, in Figures 1 to 4, the hot, humid compressed gas coming directly from compressor 101 is shown by the line marked 300, and the cooled, dehumidified compressed gas is shown by the line marked 301.

[0062] 1 shows the first regeneration stage 400 of the first configuration of the device. Here, valves 201, 202, 205, and 208 are open, and valves 200, 203, 204, 206, and 207 are closed. Humid, hot compressed gas 300 from compressor 101 is transferred through input 100 to first adsorption dryer 102 to regenerate the desiccant contained therein. The gas then flows through valve 205 and through a suction conduit from ejector manifold 107 to cooler 104 and water separator 105. This cooled, dehumidified gas 301 is then further dried by adsorption dryer 103 and transferred to drain 106.

[0063] 2 shows the second regeneration stage 401 of the first configuration of the device. Again, valve 204 remains closed, as does the main channel at inlet 800 of ejector manifold 107. With valves 200, 203, 206, and 207 open and other valves 201, 202, 205, and 208 closed, moist, hot compressed gas 300 is forced to pass first through second adsorption dryer 103 for regeneration of the desiccant therein. After cooling and dehumidification 301, the gas is transferred to the first adsorption dryer for further drying.

[0064] Figure 3 shows the first drying stage 402 of the first configuration of the device, and Figure 4 shows the second drying stage of this first configuration. Note that for both stages, valve 204 is open and valves 202 and 203 are closed. This configuration allows moist, hot compressed gas 300 to flow through inlet 800 and through main channel 800 of ejector manifold 107. As a result, negative pressure is applied to both suction channels 801, 802. However, because valve 207 is closed, only gas on the valve 205 side is suctioned.

[0065] The moist, hot compressed gas 300 is cooled 104, the water is separated 105, and then transferred to the adsorption dryer 103 for further drying. A portion of the dried gas 301 is then diverted to the first adsorption dryer 102 and another portion to drain 106, as indicated by the branch point between valves 200 and 201. The diverted portion flows through valve 200 to the adsorption dryer 102, through valve 205, and then is drawn through the suction channel of the ejector manifold 107, where it mixes with the hot, moist compressed gas 300 coming from the main channel. By passing the portion of the dried gas 301 through the first adsorption dryer 102, the desiccant contained therein can be further regenerated.

[0066] A similar situation is shown in Figure 4, this time showing the second drying stage 403 of the first configuration of the device. Here, as in the first drying stage 402, the dried gas 301 is first transferred to the first adsorptive dryer 102, with a portion being diverted to the second adsorptive dryer 103 for further regeneration of the desiccant therein.

[0067] A second configuration of the device will now be further illustrated with reference to Figures 5 to 8.

[0068] As can be seen from Figure 5, the connections of the ejector manifold in the second configuration are different from those in the first configuration. Ejector manifold 600 is still connected to source 100 by a main channel, but this time, from a fluid dynamic point of view, before valve 204. Suction ducts 801, 802 of ejector manifold 600 are connected to valves 202 and 203. Furthermore, there is a point 601 where three conduits converge: one coming from valve 204, one coming from valve 205, and one coming from valve 207. With regard to the other components and parts, operations are similar to those in the first configuration, as will be further explained.

[0069] 5 shows the first regeneration stage 500 of the second configuration of the device, in which valves 200, 203, 204, 206 and 207 are closed and valves 201, 202, 205 and 208 are open.

[0070] Here, hot compressed gas is shown by lines with markings such as line 700 where it is passed through main channel 800 of ejector manifold 600 and moved through a suction channel to first adsorption dryer 102. It is then moved to cooler 104 and water separator 105, and the cooled gas, further shown by lines such as marking 701, is moved to adsorption dryer 103 for further drying and then to drain 106.

[0071] FIG. 6 shows the second regeneration stage 501 of the second configuration, where hot gas 700 is transferred to the second adsorption dryer 103 for regeneration of the desiccant therein, and cooled gas 701 is transferred to the first adsorption dryer 102 for further drying before being transferred to drain 106.

[0072] FIG. 7 shows the first drying stage 502 and FIG. 8 shows the second drying stage 503 of the second configuration of the device.

[0073] The difference between the first and second configurations, due to the placement of the ejector manifold 600, is that in the second configuration, the cooled gas 701 is diverted immediately after the cooler 104 and water separator 105, whereas in the first configuration, this occurs exclusively after the first pass through the adsorption dryers. In the second configuration, each adsorption dryer 102, 103 passes no more than 100 percent of the inlet gas supply. In the first configuration, up to 125 percent of the inlet volume or mass can flow through the adsorption dryers 102, 103, and this should be accounted for in the design. [Explanation of symbols]

[0074] 100 Supply source, input section 101 Compressor 102 First adsorption dryer 103 Second adsorption dryer 104 Cooler, cooling 105 Water separator, separating 106 Drain 107 Ejector manifold, mixing 108 points 200, 201, 202, 203, 204, 205, 206, 207, 208 valves 300 Wires, conduits, hot compressed gas, wet hot compressed gas 301 Lines, conduits, cooled and dehumidified gas, cooled and dehumidified, dried gas 400 (First Configuration) First Regeneration Phase 401 Second regeneration stage (of the first configuration) 402 (first composition) first drying stage 403 Second drying stage (of first composition) 500 (second configuration) first regeneration stage 501 Second regeneration stage (of second configuration) 502 (of the second composition) first drying stage 503 (of the second composition) second drying stage 600 Ejector manifold 601 (3 conduits converge) 700 wire, hot gas 701 marks, cooled gas 800 inlet, main channel 801, 802 Suction channel, suction duct 803 Exit

Claims

1. A device for drying gas (300, 700) wet-compressed by a compressor (101), comprising: - a source (100) suitable for supplying said moist compressed gas (300, 700); - a first adsorption dryer (102) and a second adsorption dryer (103) suitable for being filled with a desiccant; - a cooler (104) and a water separator (105); - a drain (106) suitable for discharging the dried compressed gas (301, 701); - Set of conduits and valves (200-208) It is composed of The set of conduits and valves (200-208) continuously directs the wet compressed gas (300, 700) from the supply (100) to the first adsorption dryer (102) and the second adsorption dryer (103), respectively, to the cooler (104) and the water separator (105), to the second adsorption dryer (103) and the first adsorption dryer (102), respectively, and to the drain (106) during the first and second regeneration stages, respectively. and further configured to sequentially transfer the wet compressed gas (300, 700) from the source (100) to the cooler (104) and the water separator (105), the second adsorption dryer (103) and the first adsorption dryer (102), respectively, and the drain (106) in a first drying stage (402, 502) and a second drying stage (403, 503), respectively. The device further includes an ejector manifold (107, 600) including a main channel (800) and first and second suction channels (802, 801), the main channel (800) connecting to the supply source (100), the first and second suction channels (802, 801) connecting to the first and second adsorption dryers (102, 103), respectively; The set of conduits and valves (200-208) is further configured to mix, using the ejector manifold (107, 600), a portion of the dried compressed gas (301, 701) via the suction channels (801, 802) during the drying stage (402, 403, 502, 503) with the moist compressed gas (300, 700) in the source (100) via the main channel (800). A device characterized in that

2. 2. The device of claim 1, wherein the first suction channel (802) and the second suction channel (801), respectively, connect the first adsorption dryer (102) and the second adsorption dryer (103), respectively, such that the portions allow the cooler (104) and the water separator (105), the second adsorption dryer (103) and the first adsorption dryer (102), respectively, to pass through the cooler (104) and the water separator (105), the first adsorption dryer (102) and the second adsorption dryer (103), respectively, in succession during the first drying stage (402) and the second drying stage (403), respectively.

3. 3. The device of claim 2, wherein the set of conduits and valves (200-208) is further configured to sequentially transfer the wet compressed gas (300) to the first adsorption dryer (102) and the second adsorption dryer (103), respectively, the first suction channel (802) and the second suction channel (801), respectively, the cooler (104) and the water separator (105), the second adsorption dryer (103) and the first adsorption dryer (102), respectively, and the drain (106) during the first regeneration stage (400) and the second regeneration stage (401), respectively.

4. 2. The device of claim 1, wherein the first suction channel (802) and the second suction channel (801), respectively, connect the first adsorption dryer (102) and the second adsorption dryer (103) such that the portions pass through the cooler (104), the water separator (105), and the first adsorption dryer (102), respectively, in succession through the cooler (104), the water separator (105), and the second adsorption dryer (103), during the first drying stage (502) and the second drying stage (503), respectively.

5. 5. The device of claim 4, wherein the set of conduits and valves is further configured to sequentially transfer the moist compressed gas to the first suction channel and the second suction channel, respectively, the first adsorption dryer and the second adsorption dryer, respectively, the cooler and the water separator, the second adsorption dryer and the first adsorption dryer, respectively, and the drain, respectively, in the first regeneration stage and the second regeneration stage.

6. 6. The device of claim 1, further comprising a measurement module configured to determine a regeneration status of the first adsorption dryer (102) and / or the second adsorption dryer (103).

7. The device of claim 6, further comprising a control module configured to control and drive the set of conduits and valves (200-208) based on the regeneration status.

8. A method for drying gas compressed by a compressor (101) by a first adsorption-type dryer (102) and a second adsorption-type dryer (103), each containing a desiccant, comprising the steps of alternately performing a first regeneration step (400) and a second regeneration step (401), respectively, in combination with a first drying step (402) and a second drying step (403), respectively, wherein the first regeneration step (400) and the second regeneration step (401) each comprise: - regenerating each of the first adsorption dryer (102) and the second adsorption dryer (103) with compressed gas (300); - cooling (104) and separating (105) the condensate from said compressed gas; - drying the compressed gas by the second adsorption dryer (103) and the first adsorption dryer (102), respectively; consecutively including The first drying stage (402) and the second drying stage (403) are - cooling (104) said compressed gas and separating (105) the condensate, thereby obtaining a cooled compressed gas (301); - drying the cooled compressed gas by the second adsorption dryer (103) and the first adsorption dryer (102), respectively, thereby obtaining cooled dried compressed gas; In a method comprising the steps of: the first drying stage (402) and the second drying stage (403) further precede the cooling step; - passing a portion of the cooled, dried compressed gas (301) through the first adsorption dryer (102) and the second adsorption dryer (103), respectively; - mixing (107) said compressed gas (300) with said portion of said cooled dried compressed gas (301); Contains A method characterized by:

9. A method for drying gas compressed by a compressor (101) by a first adsorption dryer (102) and a second adsorption dryer (103), each containing a desiccant, comprising alternating first and second regeneration stages (500) and (501), respectively, in combination with a first drying stage (502) and a second drying stage (503), each of which comprises: - regenerating each of the first adsorption dryer (102) and the second adsorption dryer (103) with compressed gas (700); - cooling (104) and separating (105) the condensate from said compressed gas; - drying the compressed gas by the second adsorption dryer (103) and the first adsorption dryer (102), respectively; consecutively including The first drying stage (502) and the second drying stage (503) are - cooling said compressed gas, thereby obtaining a cooled compressed gas (701); - drying the cooled compressed gas by the second adsorption dryer (103) and the first adsorption dryer (102), respectively, thereby obtaining cooled dried compressed gas; In a method comprising the steps of: the first drying stage (502) and the second drying stage (503) further precede the step of cooling; - passing a portion of the cooled compressed gas through the first adsorption dryer (102) and the second adsorption dryer (103), respectively; - mixing the compressed gas with the portion of the cooled compressed gas; Contains A method characterized by:

10. The drying step (502, 503) - using said portion of said gas to regenerate the desiccant in each of said first adsorption dryer (102) and said second adsorption dryer (103).

10. The method of claim 8 or 9, further comprising:

11. 11. The method according to claim 8, wherein the regenerating step by the regeneration stage (400, 401, 500, 501) comprises heating the desiccant using heat of compression of the compressed gas.

12. - determining the regeneration status of the first adsorption dryer (102) and / or the second adsorption dryer (103); further comprising The alternating combination of the first regeneration step (400, 500) and the second regeneration step (401, 501), respectively, with the first drying step (402, 502) and the second drying step (403, 503), respectively, is based on the regeneration state, 12. The method according to any one of claims 8 to 11.

13. An ejector manifold (107, 600) suitable for a device according to any one of claims 1 to 7 and / or for mixing compressed gas with a portion of cooled compressed gas according to a method according to any one of claims 8 to 12.

14. Use of an ejector manifold (107, 600) according to claim 13.

15. A compressor installation comprising a compressor (101) with an outlet connected to the inlet of a device according to any one of claims 1 to 7.

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