Process gas conditioning equipment and process for conditioning process gas

Abstract

Process gas conditioning device (1) for a process gas (2) for treating a process material in a process apparatus (3), comprising a process gas inlet (7) and a process gas outlet (10) fluidically connected to the process apparatus (3), wherein the process gas (2) flows on a conditioning section (13) extending from the process gas inlet (7) to the process gas outlet (10), comprising a process gas dehumidification device (18) designed as a device component (4) in the flow direction of the process gas (2) and a process gas temperature control device (19) arranged downstream of the process gas dehumidification device (18) and designed as a device component (4), wherein the process gas dehumidification device (18) is connected via a dehumidification device inlet (20) and a dehumidification device outlet (21) and the process gas temperature control device (19) via a temperature control device inlet (22) and a temperature control device outlet (23) providesand wherein the process gas temperature control device (19) comprises a temperature control unit (51) for the process gas (2), which has a temperature control unit inlet (49) and a temperature control unit outlet (50) and is designed as a device component (4), a cooling unit (63) for the process gas (2), which has a cooling unit inlet (61) and a cooling unit outlet (62) and is designed as a device component (4), and a bypass unit (60), which has a bypass inlet (58) and a bypass outlet (59) and is connected in parallel to the temperature control unit (51) and is designed as a device component (4), wherein a valve arrangement (64), which is designed as a device component (4), is arranged on the bypass unit (60) for selectively allowing flow through the temperature control unit (51) or the bypass unit (60), and is equipped with a relative humidity sensor (65) for measuring the relative humidity of the first measuring device (66) having process gas (2)wherein the first measuring device (66) is arranged downstream of the process gas dehumidification device (18) and is connected to a control device (67), characterized in that the cooling unit (63) is a component of the bypass unit (60).

Description

[0001] The invention relates to a process gas treatment device for a process gas for treating a process material in a process apparatus, with a process gas inlet and a process gas outlet fluidically connected to the process apparatus, wherein the process gas flows on a treatment path extending from the process gas inlet to the process gas outlet, with a process gas dehumidification device designed as a device component in the flow direction of the process gas and a process gas tempering device arranged downstream of the process gas dehumidification device and designed as a device component, wherein the process gas dehumidification device has a dehumidification device inlet and a dehumidification device outlet and the process gas tempering device has a tempering device inlet and a tempering device outlet,and wherein the process gas temperature control device comprises a temperature control unit for the process gas, which is designed as a device component and has a temperature control unit inlet and a temperature control unit outlet, a cooling unit for the process gas, which is designed as a device component, and a bypass unit, which is designed as a device component and has a bypass inlet and a bypass outlet, is connected in parallel to the temperature control unit, wherein a valve arrangement, designed as a device component, is arranged on the bypass unit for selectively flowing through the temperature control unit or the bypass unit, and a first measuring device, which has a relative humidity sensor for measuring the relative humidity of the process gas, wherein the first measuring device is arranged downstream of the process gas dehumidification device and has a control device.

[0002] Furthermore, the invention relates to a method for processing process gas for treating a process material in a process apparatus during a drying phase and a cooling phase, comprising a process gas processing device, with a process gas inlet and a process gas outlet fluidically connected to the process apparatus, wherein the process gas flows on a processing path extending from the process gas inlet to the process gas outlet, with a process gas dehumidification device designed as a device component in the flow direction of the process gas and a process gas temperature control device arranged downstream of the process gas dehumidification device and designed as a device component, wherein the process gas dehumidification device has a dehumidification device inlet and a dehumidification device outlet and the process gas temperature control device has a temperature control device inlet and a temperature control device outlet,and wherein the process gas temperature control device comprises a temperature control unit for the process gas, which is designed as a device component and has a temperature control unit inlet and a temperature control unit outlet, a cooling unit for the process gas, which is designed as a device component, and a bypass unit, which is designed as a device component and has a bypass inlet and a bypass outlet, is connected in parallel to the temperature control unit, wherein a valve arrangement, designed as a device component, is arranged on the bypass unit for selectively flowing through the temperature control unit or the bypass unit, and a first measuring device, which has a relative humidity sensor for measuring the relative humidity of the process gas, wherein the first measuring device is arranged downstream of the process gas dehumidification device and has a control device.

[0003] Process gas conditioning systems are well known, but in addition to high energy consumption, they also have long cooling times for the process gas.

[0004] JP 2015 188 860 A discloses a process gas conditioning system for a process apparatus having a process gas inlet and a process gas outlet fluidically connected to the process apparatus. The process gas flows along a conditioning section extending from the process gas inlet and process gas outlet, comprising a process gas dehumidification system in the form of an adsorption wheel, arranged in the flow direction of the process gas, and a process gas temperature control system arranged downstream thereof, comprising a temperature control unit in the form of a heater. Each of these systems is configured as a component of the process gas conditioning system, each comprising an inlet and outlet for the process gas. A measuring system comprising a relative humidity sensor for detecting the relative humidity of the process gas is arranged upstream of the process gas dehumidification system. The system further comprises a control system.

[0005] JP 2012 117 683 A discloses a process gas treatment device for a process apparatus having a treatment section arranged between a process gas inlet and outlet, which comprises a process gas dehumidification device with drying wheels and a process gas temperature control device with a cooling and heating system. The process device further comprises various temperature and humidity sensors and a control device.

[0006] US 4 554 887 A describes a process gas conditioning device for a process gas for treating a process material in a process apparatus designed as a coating apparatus with a process gas inlet, a process gas outlet, a conditioning section arranged therebetween with a process gas dehumidification device and a process gas temperature control unit, a control device and a measuring device for detecting the relative humidity in the process gas, which is arranged upstream of the dehumidification device.

[0007] The object of the invention is therefore to provide a process gas processing device and a method for processing process gas in order to minimize the disadvantages of known process gas processing devices, in particular the high energy consumption and the long cooling times for the process gas.

[0008] This task is solved in a process gas treatment facility of the type mentioned above in that the cooling unit is a component of the bypass unit. In addition to the advantage of significantly reduced energy consumption during the drying phase and the cooling phase of the process material, such a process gas treatment facility also has the advantage that the cooling times for the process gas, which is in particular in the form of ambient air, are shortened in the cooling phase of the process material following the drying phase by arranging the cooling unit in the bypass unit. After the drying phase of the process material, a cooling phase of the process material begins. The cooling phase is necessary to prevent moisture, particularly in the form of water, from "sweating out" of the treated process material, as this moisture could otherwise condense and lead to undesirable agglomeration of the process material in the process apparatus.In conventional process gas conditioning systems, the process gas is cooled either upstream or downstream of the process gas temperature control system. If the process gas is cooled either upstream or downstream of the process gas temperature control system, the gas flows through all system components during the cooling phase and is thus cooled before the process material. This is very energy- and time-consuming, for example, due to the inert mass of the installed system components.

[0009] In a related development of the process gas treatment system, the process gas treatment system comprises a process device configured as a component of the system, which is expediently designed as a fluidization device or a coating device. Fluidization devices are designed, for example, as fluidized bed or spouted bed devices. Coating devices are, for example, coaters, in particular drum coaters.

[0010] The process gas processing device preferably comprises a process gas delivery device configured as a component of the device. The advantage of such a design of the process gas processing device is that the process gas is adjustable and delivered along the processing path by the process gas delivery device, in particular a blower, a vacuum pump, or the like. For this purpose, the process gas delivery device is expediently arranged upstream and / or downstream of the processing apparatus.

[0011] According to a further development of the process gas treatment device, the process gas dehumidification device comprises a condensation dehumidification unit configured as a device component, having a condensation dehumidification unit inlet and a condensation dehumidification unit outlet, and / or an adsorption dehumidification unit configured as a device component, having an adsorption dehumidification unit inlet and an adsorption dehumidification unit outlet. Advantageously, the condensation dehumidification unit and the adsorption dehumidification unit are both suitable for dehumidifying the process gas, whereby the use of the condensation dehumidification unit and the adsorption dehumidification unit in the process gas dehumidification device enables improved and precisely adjustable dehumidification of the process gas.The two device components or their combination are used depending on the amount of moisture to be removed from the process gas.

[0012] The condensation dehumidification unit is expediently designed as a fluid-cooled condenser, with cooling water, for example from a nearby body of water, being used as the fluid. The condensation dehumidification unit designed as a condenser is preferably dimensioned to cool the process gas to approximately 8 °C using cooling water. This reduces the relative humidity of the process gas, thereby drying it.

[0013] The condensation dehumidification unit, designed as a condenser, is sufficiently dimensioned for the majority of process gas treatment processes.

[0014] If the process gas dehumidification system has a condensation dehumidification unit and an adsorption dehumidification unit, the condensation dehumidification unit is expediently arranged upstream of the adsorption dehumidification unit on the treatment line. This allows the relative humidity of the process gas to be precisely adjusted after it has flowed through the condensation dehumidification unit, with the adsorption dehumidification unit preferably being designed as a drying wheel.

[0015] In particular, the adsorption dehumidification unit has a regeneration unit which is designed as a device component and has a regeneration unit inlet and a regeneration unit outlet, wherein a regeneration gas is conveyed by a regeneration gas conveying device which is designed as a device component and has a regeneration gas conveying device inlet and a regeneration gas conveying device outlet on a regeneration section extending from the regeneration unit inlet to the regeneration unit outlet and flows in the flow direction of the regeneration gas through a regeneration gas heating device which is designed as a device component and has a regeneration gas heating device inlet and a regeneration gas heating device outlet, and the adsorption dehumidification unit which has a regeneration gas inlet and a regeneration gas outlet.A warm regeneration of the adsorption dehumidification unit is expediently carried out. During warm regeneration, the regeneration gas is heated to a temperature of, for example, 160°C or higher for the regeneration of a desiccant in the adsorption dehumidification unit and passed through the adsorption dehumidification unit to be regenerated. The hot regeneration gas extracts the moisture absorbed from the process gas from the desiccant and expediently releases it to the environment, preferably at the regeneration unit outlet. In this regard, the regeneration section is preferably designed as a closed circuit. Accordingly, such a closed circuit has the advantage that regeneration of the adsorption dehumidification unit can take place independently of the ambient conditions, i.e., for example, without the intake of ambient air.

[0016] According to a further embodiment of the process gas treatment system, the process gas dehumidification system comprises a preheating unit configured as a component of the system, which has a preheating unit inlet and a preheating unit outlet and is expediently arranged upstream of the condensation dehumidification unit and / or the adsorption dehumidification unit. The preheating unit is used in particular as an antifreeze heater for the condensation dehumidification unit. If the regeneration section is configured as a closed circuit, the moisture absorbed from the regeneration gas during the regeneration of the adsorption dehumidification unit is condensed out in the preheating unit.

[0017] Particularly preferably, the preheating unit is also associated with the regeneration unit, wherein the preheating unit is arranged on the regeneration section designed as a closed circuit upstream of the regeneration gas heating device and downstream of the regeneration gas conveying device, whereby the process gas is heated as it flows through the preheating unit and the regeneration gas is cooled as it flows through the preheating unit. The integration of the preheating unit designed as a heat source further increases the cost-effectiveness of drying the process gas.

[0018] Furthermore, the regeneration gas delivery device is preferably arranged on the regeneration line downstream of the adsorption dehumidification unit. This arrangement of the regeneration gas delivery device creates a preferred negative pressure on the regeneration line.

[0019] Further preferably, the first measuring device is arranged upstream of the process gas temperature control device. Advantageously, the first measuring device measures the relative humidity in the process gas and transmits it to the control device as a sensor signal.

[0020] Humidity refers to the proportion of water vapor in the process gas; liquid water (e.g., rain, dew) is not included. Relative humidity indicates the proportion of maximum saturation, where 100% means that no more water vapor can be absorbed by the process gas. Absolute humidity indicates the mass of water vapor per cubic meter of process gas. The higher the temperature, the more water vapor the process gas, especially air, can absorb.

[0021] Relative humidity can be converted to absolute humidity using approximate formulas. Various approximate formulas are available in the literature for this purpose. A "simple" approximate formula for calculating absolute humidity f in the unit g / m 3 from the relative humidity and temperature f=6.122⋅e(17.67×T)(T+243.5)⋅rh⋅18.02(273.15+T)⋅100⋅0.08314 Achieves an accuracy of up to 0.1% in the temperature range between -30°C and 35°C and at normal atmospheric pressure. Temperature T is given in degrees Celsius, relative humidity rh is given in % and e is the base of the natural logarithm, 2.71828. The greater the temperature deviates from the aforementioned temperature range, the less accurate the conversion result becomes.

[0022] To convert relative humidity to absolute humidity, the temperature of the process gas is required. Therefore, the first measuring device also has a temperature sensor for measuring the temperature of the process gas. Conveniently, the temperature of the process gas is also measured and transmitted to the control device as a sensor signal.

[0023] Preferably, the relative humidity sensor and the temperature sensor of the first measuring device are designed as a structural unit.

[0024] Using the temperature and relative humidity of the process gas, which are conveniently transmitted to the control device as a sensor signal, the absolute humidity can be calculated, which is independent of the temperature. Conversion to the actual absolute humidity value is performed in the first measuring device or in the control device.

[0025] According to another embodiment of the process gas conditioning device, the temperature control unit comprises a heating device configured as a component of the device, which has a heating device inlet and a heating device outlet. The heating device is advantageously suitable for conditioning the process gas during the drying phase of the treatment of the process material by cooling or heating. This allows the process gas to be set to any temperature within the range from 5 °C to 250 °C, particularly in the form of ambient air.

[0026] According to an additional development of the process gas treatment system, the process gas conveying system is arranged downstream of the process gas dehumidification system and upstream of the process gas tempering system. This arrangement of the process gas conveying system downstream of the process gas dehumidification system creates a preferred negative pressure in the treatment line.

[0027] Furthermore, in a further development of the process gas conditioning device, a second measuring device equipped with a relative humidity sensor for measuring the relative humidity of the process gas is arranged upstream of the process gas dehumidification device. Advantageously, the second measuring device measures the relative humidity in the process gas at the process gas inlet and transmits it as a sensor signal to the control device. This enables the regulation and / or control of each individual device component independently of the other device components.

[0028] To convert relative humidity into absolute humidity, the temperature of the process gas is required. Therefore, the second measuring device also has a temperature sensor for measuring the temperature of the process gas. In particular, the temperature of the process gas measured by the second measuring device is also transmitted to the control device as a sensor signal.

[0029] The relative humidity sensor and the temperature sensor of the second measuring device are also conveniently designed as a structural unit.

[0030] The temperature and relative humidity measured by the second measuring device are used to regulate and / or control the individual system components by switching them on and / or off. In particular, the condensation dehumidification unit, the adsorption dehumidification unit, the preheating unit, and / or the humidification unit are regulated and / or controlled accordingly. Surprisingly, this modern, innovative, and proactive control technology results in enormous energy savings and improved process gas treatment.

[0031] In a further embodiment of the process gas conditioning device, it preferably comprises a humidification device configured as a component of the device, particularly downstream of the process gas dehumidification device and upstream of the process gas tempering device. The humidification device has a humidification device inlet and a humidification device outlet. The humidification device makes it possible to humidify the process gas and also to adjust the humidities of the process gas to values ​​that are higher in magnitude than the humidities of the process gas entering the process gas conditioning device at the process gas inlet. For this purpose, the process gas is heated by the preheating unit to a temperature that allows the process gas to absorb the moisture.

[0032] Furthermore, the object is achieved in a method of the type mentioned at the outset in that the cooling unit is a component of the bypass unit and wherein, during the treatment of the process material in the process apparatus, the flow passes through the temperature control unit in the drying phase and the flow passes through the bypass unit comprising the cooling unit in the cooling phase. A method designed in this way for processing process gas in a process gas processing device has, in addition to the advantage of significantly reduced energy consumption during the drying phase and the cooling phase of the process material, the additional advantage that the cooling times for the process gas, which is in particular in the form of ambient air, are shortened in the cooling phase of the process material following the drying phase by arranging the cooling unit in the bypass unit. After the drying phase of the process material, a cooling phase of the process material begins.The cooling phase is necessary to prevent moisture, particularly in the form of water, from "sweating out" of the treated process material, as this moisture could otherwise condense and lead to undesirable agglomeration of the process material in the process apparatus. In the known process gas conditioning systems, the process gas is cooled upstream or downstream of the process gas temperature control system. If the process gas is cooled upstream or downstream of the process gas temperature control system, the flow passes through all of the system components during the cooling phase and is therefore cooled before the process material. This is very energy- and time-consuming due, for example, to the inert mass of the installed system components. As a result of the process, no flow passes through the process gas temperature control system during the cooling phase, which makes the process significantly more energy-efficient than existing processes.

[0033] According to a further advantageous embodiment of the method, the humidity of the process gas flowing through the process gas conditioning device is controlled, in particular at least during the drying phase. The humidity of the process gas can be controlled using either the relative humidity or the absolute humidity, with absolute humidity being preferred, since absolute humidity, unlike relative humidity, is independent of the temperature of the process gas.

[0034] For this purpose, the first measuring device preferably has a temperature sensor for measuring the temperature of the process gas, and a first absolute humidity comparison between the absolute humidity setpoint and the absolute humidity actual value is carried out in the control device, wherein the absolute humidity actual value is determined from a relative humidity value measured by the relative humidity sensor of the first measuring device and a temperature value measured by the associated temperature sensor. The absolute humidity actual value is expediently determined in the first measuring device or in the control device. Taking the first absolute humidity comparison into account, the control device transmits an absolute humidity controlled variable to the process gas dehumidification device and / or humidification device in order to regulate the absolute humidity of the process gas. The humidity is expediently regulated within a tolerance range of ±3% of the setpoint.

[0035] In this regard, the process gas is humidified by a humidification device, which is located downstream of the process gas dehumidification device and upstream of the process gas tempering device. The humidification device makes it possible to humidify the process gas and also to adjust the humidity of the process gas to a value that is higher than the humidity of the process gas entering the process gas conditioning device at the process gas inlet. For this purpose, the process gas is heated by the preheating unit to a temperature that allows the process gas to absorb the moisture. The humidification device makes the process for preparing a process gas for the treatment of a process material in a process device, in particular a fluidization device or a coating device, even more flexible.

[0036] According to a further development of the method, the process gas dehumidification device comprises an adsorption dehumidification unit having a regeneration unit, wherein the adsorption dehumidification unit is at least partially regenerated by the regeneration unit. In this regard, the regeneration unit comprises a regeneration gas heating device that heats a regeneration gas, so that the regeneration gas absorbs moisture as it flows through the adsorption dehumidification unit, whereby the adsorption dehumidification unit is at least partially dried and thus regenerated. The adsorption dehumidification unit dehumidifies the process gas—regardless of whether a condensation dehumidification unit is connected upstream or not—so that the setpoint stored in the control device is reached. This is achieved in particular by precisely adjusting the relevant parameters, such as the temperature and relative humidity of the regeneration gas.In particular, the control device regulates and / or controls the regeneration gas heating device based on the comparison of the actual value and the setpoint. The regeneration gas regenerates the adsorption dehumidification unit so that it can absorb precisely the amount of moisture needed to dry the process gas to achieve the setpoint stored in the control device. Preferably, the regeneration gas flows through the adsorption dehumidification unit in countercurrent to the process gas.

[0037] Furthermore, the process gas dehumidification device has a preheating unit, which is expediently arranged upstream of the condensation dehumidification unit. The preheating unit heats the process gas entering the process gas conditioning device via the process gas inlet to prevent freezing of the condensation dehumidification unit or to heat the process gas for humidification of the process gas. The preheating unit is used in particular as an "antifreeze heater" for the condensation dehumidification unit. If the regeneration section is designed as a closed circuit, the moisture absorbed from the regeneration gas during the regeneration of the adsorption dehumidification unit is condensed out in the preheating unit.

[0038] According to an additional development of the method, each component of the process gas conditioning device can be switched on and / or off. For this purpose, a second measuring device equipped with a relative humidity sensor for measuring the relative humidity of the process gas and a temperature sensor for measuring the temperature of the process gas is arranged upstream of the process gas dehumidification device. A second absolute humidity comparison is performed in the control device between the absolute humidity setpoint and the absolute humidity actual value, with the absolute humidity actual value being determined from a relative humidity value measured by the relative humidity sensor of the second measuring device and a temperature value measured by the associated temperature sensor. The absolute humidity actual value is expediently determined in the second measuring device or in the control device.For this purpose, the control device can transmit an absolute humidity control variable to each device component, taking into account the second absolute humidity comparison, in order to switch the respective device component of the process gas conditioning device on and / or off.

[0039] Based on the absolute humidity comparison, the control system decides which components of the process gas conditioning system are activated and / or deactivated to dehumidify the process gas. The following absolute humidity setpoints are listed that are used in practice during operation of the process gas conditioning system: - Dehumidification only via the condensation dehumidification unit at an absolute humidity setpoint of greater than or equal to 8 g / m 3 ; Adsorption dehumidification unit is switched off if present; - Dehumidification only via the adsorption dehumidification unit at an absolute humidity setpoint of less than 8 g / m 3 ; Condensation dehumidification unit is switched off if present; - Dehumidification via the condensation dehumidification unit and the adsorption dehumidification unit at an absolute humidity target value of less than 8 g / m 3 and a difference between the actual absolute humidity value and the setpoint absolute humidity value of greater than or equal to 6 g / m 3 ; - Humidification via the humidification device when the actual absolute humidity value is lower than the absolute humidity setpoint.

[0040] The above absolute humidity setpoint is a value based on experience, which may also deviate from the above absolute humidity setpoint.

[0041] The process gas conditioning device comprises a process gas conveying device configured as a component of the device, which conveys the process gas along a conditioning path extending from the process gas inlet to the process gas outlet. The advantage of such a method configuration is that the process gas is adjustable and conveyed along the conditioning path by the process gas conveying device, in particular a blower, a vacuum pump, or the like.

[0042] The invention is explained in more detail below with reference to the accompanying drawing, which shows Fig. 1 a first embodiment of a process gas conditioning device, Fig. 2 a second embodiment of a process gas conditioning device, Fig. 3 a third embodiment of a process gas conditioning device, Fig. 4 a fourth embodiment of a process gas conditioning device, Fig. 5 a fifth embodiment of a process gas conditioning device, Fig. 6 a sixth embodiment of a process gas conditioning device and Fig. 7 a seventh embodiment of a process gas conditioning device.

[0043] Unless otherwise stated, the following description refers to all embodiments illustrated in the drawing of a preferred process gas processing device 1 for a process gas 2 for treating a process material in a process apparatus 3 and a corresponding method for processing process gas 2 for treating a process material in a process apparatus 3. In this case, the process gas processing device 1 expediently has the process apparatus 3 designed as device component 4, which is designed in particular as a fluidization apparatus 5 or as a coating apparatus 6.

[0044] The process gas conditioning device 1 has a process gas inlet 7 and a process gas outlet 10 fluidically connected to the process apparatus 3, which has a process apparatus inlet 8 and a process apparatus outlet 9. Preferably, the process gas inlet 7 and the process gas outlet 10 are designed as connecting pieces, to which incoming or outgoing channel sections 11, expediently designed as pipelines, can be arranged or are arranged. To better distinguish identical items, they are identified below by the reference numerals a, b, c, etc., for example, for channel sections 11a, 11b, 11c.

[0045] The process gas 2 is conveyed by a process gas conveying device 12, designed as a device component 4, along a processing section 13 extending from the process gas inlet 7 to the process gas outlet 10. The process gas conveying device 12, which has a process gas conveying device inlet 14 and a process gas conveying device outlet 15, is expediently designed as a vacuum pump 16 or as a blower 17. Preferably, the process gas conveying device inlet 14 and the process gas conveying device outlet 15 are designed as connecting pieces, on which incoming or outgoing channel sections 11 can be arranged or are arranged, wherein the channel sections 11 are designed in particular as pipelines.

[0046] The process gas conditioning device 1 comprises, in the flow direction of the process gas 2, a process gas dehumidification device 18 designed as a device component 4 and a process gas tempering device 19 arranged downstream of the process gas dehumidification device 18 and designed as a device component 4. Preferably, the process gas conveying device 12 is arranged downstream of the process gas dehumidification device 18 and upstream of the process gas tempering device 19.

[0047] The process gas dehumidification device 18 has a dehumidification device inlet 20 and a dehumidification device outlet 21, and the process gas temperature control device 19 has a temperature control device inlet 22 and a temperature control device outlet 23. Preferably, the dehumidification device inlet 20, the dehumidification device outlet 21, the temperature control device inlet 22, and the temperature control device outlet 23 are also designed as connecting pieces, to which incoming or outgoing channel sections 11, in particular in the form of pipes, can be arranged or are arranged. Advantageously, the process gas dehumidification device 18 can enable precisely adjustable dehumidification of the process gas 2.

[0048] Here, the process gas dehumidification device 18 has a condensation dehumidification unit 26, which is designed as device component 4 and has a condensation dehumidification unit inlet 24 and a condensation dehumidification unit outlet 25, and / or an adsorption dehumidification unit 29, which is designed as device component 4 and has an adsorption dehumidification unit inlet 27 and an adsorption dehumidification unit outlet 28. Preferably, the condensation dehumidification unit inlet 24 and the condensation dehumidification unit outlet 25, as well as the adsorption dehumidification unit inlet 27 and the adsorption dehumidification unit outlet 28, are designed as connecting pieces, on which incoming or outgoing channel sections 11, expediently designed as a pipeline, can be arranged or are arranged.

[0049] Except in the Fig. 1, in which the process gas dehumidification device 18 has only the condensation dehumidification unit 26, and in the Fig. 2, in which the process gas dehumidification device 18 has only the adsorption dehumidification unit 29, the process gas dehumidification device 18 has in all other embodiments shown in the Fig. 3 to 7, the condensation dehumidification unit 26 and the adsorption dehumidification unit 29 arranged on the processing section 13 downstream of the condensation dehumidification unit 26 are each provided. Preferably, the condensation dehumidification unit 26 is designed as a fluid-cooled condenser 30 and the adsorption dehumidification unit 29 is designed as a drying wheel 31.

[0050] In the fluid-cooled condenser 30, cooling water is used as the fluid. The condenser 30 is dimensioned in particular to cool the process gas 2 to approximately 8 °C using cooling water, thereby reducing the humidity of the process gas 2. Such a condenser is sufficiently dimensioned for the majority of processes performed for the treatment of process gas 2. The cooling of the process gas 2 can also be carried out to a different temperature. The aforementioned 8 °C is an empirical value when using cooling water from the cooling water network of operators of a process gas treatment facility 1.

[0051] The Fig. The embodiment shown in Figure 2 shows an adsorption dehumidification unit 29 designed as a process dehumidification device 18 in the form of a drying wheel 31. The humidity of the process gas 2 can be precisely adjusted by the adsorption dehumidification unit 29 designed as a drying wheel 31.

[0052] Also in the embodiments of the Fig. 3 to 6, the humidity of the process gas 2 can be precisely adjusted by the adsorption dehumidification unit 29 designed as a drying wheel 31. The adsorption dehumidification unit 29 has for this purpose in the Fig. 2 to 6, a regeneration unit 34 is provided, which is designed as a device component 4 and has a regeneration unit inlet 32 ​​and a regeneration unit outlet 33. Preferably, the regeneration unit inlet 32 ​​and the regeneration unit outlet 33 are designed as connecting pieces, on which channel sections 11 leading in or out, expediently designed as a pipeline, can be arranged or are arranged.

[0053] For the regeneration of the adsorption dehumidification unit 29, in particular of the drying wheel 31, a regeneration gas 35 is conveyed along a regeneration section 36 extending from the regeneration unit inlet 32 ​​to the regeneration unit outlet 33 by a regeneration gas conveying device 39, which is designed as device component 4 and has a regeneration gas conveying device inlet 37 and a regeneration gas conveying device outlet 38. The regeneration gas conveying device inlet 37 and the regeneration gas conveying device outlet 38 are expediently also designed as connecting pieces, on which incoming or outgoing channel sections 11, for example designed as a pipeline, can be arranged or are arranged.In the flow direction of the regeneration gas 35, the gas flows through a regeneration gas heater 42, configured as device component 4, having a regeneration gas heater inlet 40 and a regeneration gas heater outlet 41, and through the adsorption dehumidification unit 29, which has a regeneration gas inlet 43 and a regeneration gas outlet 44. Heat exchangers or electric heaters are particularly suitable as the regeneration gas heater 42. Preferably, the regeneration gas heater inlet 40 and the regeneration gas heater outlet 41, as well as the regeneration gas inlet 43 and the regeneration gas outlet 44, are also configured as connecting pieces, to which respective incoming or outgoing channel sections 11, configured in particular as pipelines, can be arranged or are arranged.The regeneration gas conveying device 39 is expediently arranged on the regeneration section 36 downstream of the adsorption dehumidification unit 29 and, more preferably, simultaneously arranged upstream of the process gas tempering device 19, whereby a negative pressure can preferably be generated or is generated on the regeneration section 36.

[0054] A warm regeneration of the adsorption dehumidification unit 29 is expediently carried out. During warm regeneration, for the regeneration of a desiccant of the adsorption dehumidification unit 29, the regeneration gas 35 is heated to a temperature of, for example, 160 °C and passed through the adsorption dehumidification unit 29 to be regenerated. The hot regeneration gas 35 removes the moisture absorbed from the process gas 2 from the desiccant and expediently releases it to the environment at the regeneration unit outlet 33.

[0055] In the Fig. In the embodiment shown in Figure 3, a portion of the process gas 2 is used as regeneration gas 35, which is branched off from the process gas 2 upstream of the condensation dehumidification unit 26. After branching off, the regeneration gas 35 flows in the flow direction on the regeneration section 36 through the regeneration gas heating device 42, the adsorption dehumidification unit 29, and the regeneration gas conveying device 39 via the regeneration unit outlet 33 into the environment—thus leaving the regeneration unit 34 and thus the process gas conditioning device 1.

[0056] In contrast to the Fig. 3, the regeneration gas 35 is in the Fig. 2 and Fig. 4, it is not part of the process gas 2, but is taken from the ambient air.

[0057] In the two in the Fig. 5 and Fig. 6, the regeneration section 36 is, in contrast to the embodiments of Fig. 2 to 4 as a closed circuit 45. In the Fig. In the fifth embodiment shown in Figure 5, the regeneration gas 35 flows through the adsorption dehumidification unit 29 in cocurrent with the process gas 2. In the Fig. In the sixth embodiment shown in Figure 6, the process gas 2 and the regeneration gas 35 flow through the adsorption dehumidification unit 29 according to the countercurrent principle. A closed circuit 45 has the advantage that regeneration of the adsorption dehumidification unit 29 can occur independently of the ambient conditions, for example, independently of the ambient temperature and the ambient air.

[0058] Fig. Figure 7 shows a seventh embodiment of the process gas treatment device 1. Here, the adsorption dehumidification unit 29 of the process gas dehumidification device 18 comprises two containers 72a and 72b, each filled with adsorbent. One container 72a or 72b is regenerated using cold or warm regeneration gas 35, while the other container 72a or 72b is flowed through by the process gas 2, drying it to the desired humidity.

[0059] In addition, the process gas dehumidification device 18 has a preheating unit 48, which is configured as device component 4 and has a preheating unit inlet 46 and a preheating unit outlet 47. The preheating unit is used in particular as an "antifreeze heater" for the condensation dehumidification unit 26 and is expediently arranged upstream of the condensation dehumidification unit 26 and / or the adsorption dehumidification unit 29. If the regeneration section 36 is configured as a closed circuit 45, the moisture absorbed from the regeneration gas 35 during the regeneration of the adsorption dehumidification unit 29 is condensed out in the preheating unit 48.In this regard, the preheating unit 48 is also advantageously assigned to the regeneration unit 34, so that the preheating unit 48 is arranged on the regeneration section 36 designed as a closed circuit 45 upstream of the regeneration gas heating device 42 and downstream of the regeneration gas conveying device 39, whereby the process gas 2 is heated as it flows through the preheating unit 48 and the regeneration gas 35 is cooled as it flows through the preheating unit 48. The preheating unit inlet 46 and the preheating unit outlet 47 are expediently designed as pipe sockets, on which incoming or outgoing channel sections 11, expediently designed as a pipeline, can be arranged or are arranged.

[0060] The process gas temperature control device 19 has a temperature control unit 51 for the process gas 2, which is designed as device component 4 and has a temperature control unit inlet 49 and a temperature control unit outlet 50. The temperature control unit inlet 49 and the temperature control unit outlet 50 are expediently designed as pipe sockets, on which incoming or outgoing channel sections 11, expediently designed as a pipeline, can be arranged or are arranged. The temperature control unit 51 has a heating device 54, which is designed as device component 4 and has a heating device inlet 52 and a heating device outlet 53. The heating device inlet 52 and the heating device outlet 53 are also preferably designed as pipe sockets, on which incoming or outgoing channel sections 11, expediently designed as a pipeline, can be arranged or are arranged.The heating device 54 is advantageously suitable for conditioning the process gas 2 in the drying phase of the treatment of the process material by cooling or heating, in particular a temperature range of 10 °C to 250 °C is adjustable, preferably at least above the ambient temperature.

[0061] Furthermore, the process gas conditioning device 1 comprises a humidification device 55, designed as a device component 4, arranged in particular downstream of the process gas dehumidification device 18 and upstream of the process gas tempering device 19. The humidification device has a humidification device inlet 56 and a humidification device outlet 57. Preferably, the humidification device inlet 56 and the humidification device outlet 57 are also designed as pipe sockets, on which incoming or outgoing channel sections 11, expediently designed as pipelines, can be arranged or are arranged. The humidification device 55 makes it possible to humidify the process gas 2 and also to adjust relative humidities of the process gas 2 that are higher in magnitude than those of the process gas 2 entering the process gas conditioning device 1 at the process gas inlet 7.

[0062] Furthermore, the process gas temperature control device 19 has a bypass unit 60, which is configured as device component 4 and has a bypass inlet 58 and a bypass outlet 59, is connected in parallel to the temperature control unit 51. The bypass unit 60, in turn, has a cooling unit 63, in particular a heat exchanger or the like, for the process gas 2, which has a cooling unit inlet 61 and a cooling unit outlet 62 and is configured as device component 4. The cooling unit inlet 61 and the cooling unit outlet 62 are preferably configured as pipe sockets, on which respective incoming or outgoing channel sections 11, expediently configured as a pipeline, can be arranged or are arranged. A valve arrangement 64 designed as a device component 4 is arranged on the bypass unit 60 for selectively flowing through the temperature control unit 51 or the bypass unit 60, wherein the cooling unit 63 is a component of the bypass unit 60.The bypass unit 60 is expediently designed as a channel section 11 in the form of a pipeline. Two 3-way valves or another valve arrangement 64 suitable for selectively flowing through the temperature control unit 51 or the bypass unit 60 are expediently used as the valve arrangement 64.

[0063] The process gas conditioning device 1 additionally has a first measuring device 66 having a relative humidity sensor 65 for measuring the relative humidity of the process gas 2, wherein the first measuring device 66 is arranged downstream of the process gas dehumidification device 18. The relative humidity in the process gas 2 is measured by means of the relative humidity sensor 65 and transmitted as an actual value in the form of a sensor signal to the control device 67. The control device 67 is configured to regulate and / or control all device components 4 independently of one another. The respective inlets and outlets of the device components 4 are arranged according to the Fig. The embodiments shown in Figures 1 to 7 are connected to one another via channel sections 11, preferably in the form of a pipeline. Peripherals arranged upstream of the process gas inlet 7 and downstream of the process gas outlet 10 can also be connected via channel sections 11, preferably in the form of pipelines.

[0064] Furthermore, the first measuring device 66 further comprises a temperature sensor 68 for measuring the temperature of the process gas 2. The temperature value is also transmitted as an actual temperature value in the form of a sensor signal to the control device 67. The relative humidity sensor and the temperature sensor 68 of the first measuring device 66 are expediently designed as a structural unit.

[0065] As already explained, the absolute humidity actual value of the process gas 2 is determined from the relative humidity of the process gas 2 measured at the relative humidity sensor 69 and the temperature measured at the temperature sensor 68. The absolute humidity actual value is determined in the first measuring device 66 or in the control device 67. If the absolute humidity actual value is determined in the first measuring device 66, the absolute humidity actual value is transmitted to the control device 67 as a sensor signal.

[0066] The control device 67, in conjunction with the first measuring device 66, controls the humidity, preferably the absolute humidity, of the process gas 2 flowing through the process gas conditioning device 1. Advantageously, the humidity is controlled at least during the drying phase. Control is based either on the relative humidity or the absolute humidity, with control based on absolute humidity being preferred, as this is independent of temperature.

[0067] For this purpose, a first absolute humidity comparison is carried out in the control device 67 between an absolute humidity setpoint stored in the control device 67 and the absolute humidity actual value, wherein the absolute humidity actual value is determined, as described, from a relative humidity value measured by the relative humidity sensor 65 of the first measuring device 66 and a temperature value measured by the associated temperature sensor 68.

[0068] The control device 67 subsequently transmits an absolute humidity control variable to the process gas dehumidification device 18, taking into account the first absolute humidity comparison, in order to regulate the absolute humidity of the process gas 2.

[0069] There are various options for drying to a lower humidity level, with drying using the condensation dehumidification unit 26 being limited by the cooling water. The adsorption dehumidification unit is limited by the capacity of the desiccant, with the moisture to be absorbed being adjustable by regenerating the desiccant.

[0070] The absolute humidity of the process gas 2 is adjusted by the process gas dehumidification device 18, controlled by the control device 67, such that the corresponding absolute humidity actual value and the absolute humidity setpoint match, preferably within a tolerance range of less than or equal to 3%. The above applies to the relative humidity.

[0071] If the actual absolute humidity value is lower than the absolute humidity setpoint during the absolute humidity comparison, the process gas 2 is humidified. For this purpose, the process gas 2 is expediently heated by the preheating unit 48 so that the temperature of the process gas 2 allows the absorption of the moisture to be added. The moisture is then added to the process gas by means of the humidification device 55. For this purpose, the first measuring device 66 is also expediently arranged upstream of the process gas temperature control device 19.

[0072] In addition, a second measuring device 70 is arranged upstream of the process gas dehumidification device 18. It is equipped with a relative humidity sensor 69 for measuring the relative humidity of the process gas 2. The relative humidity in the process gas 2 is measured by the relative humidity sensor 69 and transmitted as a further actual value in the form of a sensor signal to the control device 67.

[0073] The second measuring device 70 also preferably has a temperature sensor 71 for measuring the temperature of the process gas 2, wherein the relative humidity sensor 69 and the temperature sensor 71 of the second measuring device 70 are expediently designed as a structural unit. If the absolute humidity actual value is determined in the second measuring device 70, the absolute humidity actual value is transmitted as a sensor signal to the control device 67.

[0074] Each device component 4 of the process gas conditioning device 1 can be switched on and / or off via a second control and / or regulation based on the second measuring device 70.

[0075] For this purpose, a second measuring device 70 is arranged upstream of the process gas dehumidification device 1, said second measuring device having a relative humidity sensor 69 for measuring the relative humidity of the process gas 2 and a temperature sensor 71 for measuring the temperature of the process gas 2, and a second absolute humidity comparison is carried out in the control device 67 between an absolute humidity setpoint stored in the control device 67, which expediently differs from the absolute humidity setpoint for regulating the humidity, and an absolute humidity actual value, wherein the absolute humidity actual value is determined from a relative humidity value measured by the relative humidity sensor 69 of the second measuring device 70 and a temperature value measured by the associated temperature sensor 71.

[0076] The actual absolute humidity value is preferably determined in the second measuring device 70 or in the control device 67.

[0077] Taking the second absolute humidity comparison into account, the control device 67 transmits an absolute humidity control variable to each device component 4 in order to switch the respective device component 4 of the process gas conditioning device 1 on and / or off. This makes it possible to switch each individual device component 4 on and / or off during the ongoing process, in particular the condensation dehumidification unit 26 and / or the adsorption dehumidification unit 29 and / or the humidification device 55. Surprisingly, this modern, innovative, and proactive control and / or regulation technology results in enormous energy savings and achieves improved treatment of the process gas 2, particularly with regard to temperature and humidity.

[0078] The regulation and / or control of the system components 4 can, as previously described, be based on absolute humidity or equally on relative humidity. Here, too, regulation and / or control based on absolute humidity is preferred, as this is temperature-independent. Preferably, this should be within a tolerance range of less than or equal to 3%.

[0079] The process for preparing process gas 2 for treating a process material in a process apparatus 3 takes place in the process preparation device 1 as explained in more detail below: The preparation of the process gas 2 for treating the process material in the process apparatus 3, in particular a fluidization apparatus 5 or a coating apparatus 6, is divided into two successive process phases, namely a drying phase and a cooling phase. At the end of each treatment of the process material, there is therefore a cooling phase of the process material. This is necessary to prevent moisture, in particular in the form of water, from "sweating out" of the treated process material, as otherwise the moisture would condense and lead to, or could lead to, undesirable agglomeration of the process material in the process apparatus 3. Therefore, during the treatment of the process material in the process apparatus 3, the flow passes through the temperature control unit 51 of the process gas temperature control device 19 during the drying phase, and the flow passes through the bypass unit 60, which has the cooling unit 63, during the cooling phase.When flowing through the temperature control unit 51, the flow does not pass through the bypass unit 60, and vice versa. The method for processing process gas 2 in a process gas processing device 1 therefore has the advantage, in addition to significantly reduced energy consumption during the entire treatment of the process material, that the cooling times for the process gas 2, which is in particular ambient air, are shortened in the cooling phase of the process material following the drying phase by arranging the cooling unit 63 in the bypass unit 60. This also allows the process material to be cooled more quickly and with greater energy efficiency.

[0080] During the treatment of the process material in the process apparatus 3, the process gas 2 enters the process preparation device 1 at the process gas inlet 7 and flows through the process preparation device 1 and the process apparatus 3 connected to the process preparation device 1. The process gas 2 is conveyed by the process gas conveying device 12. In addition to the process gas dehumidification device 18 and the process gas temperature control device 19, the process gas 2 also flows through a humidification device 55, which may be arranged in particular downstream of the process gas dehumidification device 18 and upstream of the process gas temperature control device 19. The humidification device 55 makes it possible to humidify the process gas 2 and also to adjust relative humidities of the process gas 2 that are higher in magnitude than those of the process gas 2 entering the process gas preparation device 1 at the process gas inlet 7.If the humidification device 55 is used, the process gas 2 is expediently heated by the preheating unit 48 before humidification to a temperature which ensures that the process gas 2 can absorb the moisture supplied via the humidification device 55.

[0081] In the method, the humidity of the process gas 2 flowing through the process gas conditioning device 1 is controlled, in particular at least during the drying phase. The humidity of the process gas 2 can be controlled using either the relative humidity or the absolute humidity, with absolute humidity being preferred since, unlike relative humidity, absolute humidity is independent of the temperature of the process gas 2.

[0082] For this purpose, the first measuring device 66 preferably has the relative humidity sensor 65 for measuring the relative humidity of the process gas 2 and the temperature sensor 68 for measuring the temperature of the process gas 2. The relative humidity value and the temperature value are transmitted as a sensor signal to the control device 67.

[0083] In the control device 67, a first absolute humidity comparison is performed between the stored absolute humidity setpoint and the absolute humidity actual value, with the absolute humidity actual value being determined from a relative humidity value measured by the relative humidity sensor 65 of the first measuring device 66 and a temperature value measured by the associated temperature sensor 68. The absolute humidity actual value is expediently determined in the first measuring device 66 or in the control device 67. Taking the first absolute humidity comparison into account, the control device 67 transmits an absolute humidity controlled variable to the process gas dehumidification device 18 in order to regulate the absolute humidity of the process gas 2. The humidity is expediently regulated within a tolerance range of ±3% of the setpoint.

[0084] Any humidification that may be carried out is also carried out via the control by means of the first measuring device 66, as already explained above.

[0085] If the process gas dehumidification device 18 has an adsorption dehumidification unit 29, designed in particular as a drying wheel 31, for drying the process gas 2, then this has a regeneration unit 34 which at least partially regenerates the adsorption dehumidification unit 29. Such process gas dehumidification devices 18 are shown, among other things, in the Fig. 2 to 7.

[0086] The regeneration gas 35 flows upstream of the adsorption dehumidification unit 29 through the regeneration gas heating device 42, which dries and heats the regeneration gas 35 so that the regeneration gas 35 can absorb moisture from the adsorption dehumidification unit 29. The regeneration gas 35 is dried and heated to such an extent that the adsorption dehumidification unit 29 dries or can dry the process gas 2, which also flows through the adsorption dehumidification unit 29, to a specified relative humidity. In particular, the control device 67 therefore regulates and / or controls the regeneration gas heating device 42 based on the first absolute humidity comparison between the stored absolute humidity setpoint and the absolute humidity actual value. The regeneration gas 35 preferably flows through the adsorption dehumidification unit 29, as shown in Fig. 6, in counterflow to process gas 2.

[0087] Furthermore, the process gas dehumidification device 18 has a preheating unit 48, which is expediently arranged upstream of the condensation dehumidification unit 26. The preheating unit 48 heats the process gas 2 entering the process gas conditioning device 1 via the process gas inlet 7 in order to prevent freezing of the condensation dehumidification unit 26. The preheating unit 48 is used in particular as an "antifreeze heater" for the condensation dehumidification unit 26. If the regeneration section 36 is designed as a closed circuit 45, the moisture absorbed from the regeneration gas 35 during the regeneration of the adsorption dehumidification unit 29 is condensed out in the preheating unit 48.

[0088] Each individual component 4 of the process gas conditioning device 1 can be switched on and / or off. For this purpose, a second measuring device 70 is arranged upstream of the process gas dehumidification device 18. It is equipped with a relative humidity sensor 69 for measuring the relative humidity of the process gas 2 and a temperature sensor 71 for measuring the temperature of the process gas 2. A second absolute humidity comparison is performed in the control device between the absolute humidity setpoint and the absolute humidity actual value of the second measuring device 70, with the absolute humidity actual value being determined from a relative humidity value measured by the relative humidity sensor 69 of the second measuring device 70 and a temperature value measured by the associated temperature sensor 71. The absolute humidity actual value is expediently determined in the second measuring device 70 or in the control device 67.For this purpose, the control device 67, taking into account the second absolute humidity comparison, transmits an absolute humidity control variable to each device component 4, which then switches the respective device component 4 of the process gas conditioning device 1 on and / or off. Surprisingly, this modern, innovative, and proactive control technology results in enormous energy savings and improved treatment of the relative humidity and temperature of the process gas 2. Conveniently, switching device components 4 on or off significantly reduces the costs of plant operation.

[0089] Based on the absolute humidity comparison, the control device 67 decides which components 4 of the process gas conditioning device 1 are to be switched on and / or off for dehumidifying the process gas 2. The following are absolute humidity setpoints that are used in practice during operation of the process gas conditioning device 1: - Dehumidification only via the condensation dehumidification unit 26 at an absolute humidity setpoint of greater than or equal to 8 g / m 3 ; Adsorption dehumidification unit 29 is switched off if present; - Dehumidification only via the adsorption dehumidification unit 29 at an absolute humidity setpoint of less than 8 g / m 3 ; Condensation dehumidification unit 26 is switched off if present; - Dehumidification via the condensation dehumidification unit 26 and the adsorption dehumidification unit 29 at an absolute humidity target value of less than 8 g / m 3and a difference between the actual absolute humidity value and the setpoint absolute humidity value of greater than or equal to 6 g / m 3 ; - Humidification via the humidification device 55 when the actual absolute humidity value is less than the set absolute humidity value.

Claims

[1] Process gas processing device (1) for a process gas (2) for treating a process material in a process apparatus (3), with a process gas inlet (7) and a process gas outlet (10) fluidically connected to the process apparatus (3), wherein the process gas (2) flows on a processing section (13) extending from the process gas inlet (7) to the process gas outlet (10), with a process gas dehumidification device (18) designed as a device component (4) in the flow direction of the process gas (2) and a process gas temperature control device (19) arranged downstream of the process gas dehumidification device (18) and designed as a device component (4), wherein the process gas dehumidification device (18) is connected via a dehumidification device inlet (20) and a dehumidification device outlet (21) and the process gas temperature control device (19) is connected via a temperature control device inlet (22) and a temperature control device outlet (23),and wherein the process gas temperature control device (19) has a temperature control unit (51) for the process gas (2) which is designed as a device component (4) and has a temperature control unit inlet (49) and a temperature control unit outlet (50), a cooling unit (63) for the process gas (2) which is designed as a device component (4) and has a cooling unit inlet (61) and a cooling unit outlet (62), and a bypass unit (60) which is designed as a device component (4) and has a bypass inlet (58) and a bypass outlet (59), is connected in parallel to the temperature control unit (51), wherein a valve arrangement (64) designed as a device component (4) is arranged on the bypass unit (60) for selectively flowing through the temperature control unit (51) or the bypass unit (60), and having a relative humidity sensor (65) for measuring the relative humidity the first measuring device (66) having the process gas (2),wherein the first measuring device (66) is arranged downstream of the process gas dehumidification device (18) and is connected to a control device (67), , characterized by that the cooling unit (63) is a component of the bypass unit (60). [2] Process gas conditioning device (1) according to claim 1, characterized by that the process gas processing device (1) has a process apparatus (3) designed as a device component (4), which is expediently designed as a fluidization apparatus (5) or as a coating apparatus (6). [3] Process gas conditioning device (1) according to claim 1 or 2, characterized by that the process gas processing device (1) has a process gas conveying device (12) designed as a device component (4). [4] Process gas conditioning device (1) according to claim 3, characterized by that the process gas conveying device (12) is arranged upstream and / or downstream of the process apparatus (3). [5] Process gas conditioning device (1) according to one of the preceding claims, characterized by that the process gas dehumidification device (18) has a condensation dehumidification unit (26) designed as a device component (4) and having a condensation dehumidification unit inlet (24) and a condensation dehumidification unit outlet (25) and / or an adsorption dehumidification unit (29) designed as a device component (4) and having an adsorption dehumidification unit inlet (27) and an adsorption dehumidification unit outlet (28), wherein the condensation dehumidification unit (26) is expediently arranged upstream of the adsorption dehumidification unit (29) on the processing section (13). [6] Process gas conditioning device (1) according to claim 5, characterized by that the adsorption dehumidification unit (29) is designed as a drying wheel (31). [7] Process gas conditioning device (1) according to claim 5 or 6, characterized bythat the adsorption dehumidification unit (29) has a regeneration unit (34) which has a regeneration unit inlet (32) and a regeneration unit outlet (33) and is designed as a device component (4), wherein a regeneration gas (35) is conveyed by a regeneration gas conveying device (39) which has a regeneration gas conveying device inlet (37) and a regeneration gas conveying device outlet (38) and is designed as a device component (4) on a regeneration section (36) extending from the regeneration unit inlet (32) to the regeneration unit outlet (33), and in the flow direction of the regeneration gas (35) a regeneration gas heating device inlet (40) and regeneration gas heating device outlet (41),as a device component (4) designed regeneration gas heating device (42) and the adsorption dehumidification unit (29) having a regeneration gas inlet (43) and a regeneration gas outlet (44). [8] Process gas conditioning device (1) according to claim 7, characterized by that the regeneration section (36) is designed as a closed circuit (48). [9] Process gas conditioning device (1) according to one of the preceding claims, characterized by that the process gas dehumidification device (18) has a preheating unit (47) which is designed as a device component (4) and has a preheating unit inlet (45) and a preheating unit outlet (46), which is expediently arranged upstream of the condensation dehumidification unit (26) and / or the adsorption dehumidification unit (29). [10] Process gas conditioning device (1) according to one of claims 6 and 7, characterized bythat the preheating unit (47) is also assigned to the regeneration unit (34), wherein the preheating unit (47) is arranged on the regeneration section (36) designed as a circuit (48) upstream of the regeneration gas heating device (42) and downstream of the regeneration gas conveying device (39), whereby the process gas (2) is heated when flowing through the preheating unit (47) and the regeneration gas (35) is cooled when flowing through the preheating unit (47). [11] Process gas conditioning device (1) according to one of claims 7 to 10, characterized by that the regeneration gas conveying device (39) is arranged on the regeneration section (35) downstream of the adsorption dehumidification unit (29). [12] Process gas conditioning device (1) according to one of the preceding claims, characterized by that the first measuring device (66) is arranged upstream of the process gas tempering device (19). [13] Process gas conditioning device (1) according to one of the preceding claims, characterized by that the first measuring device (66) further comprises a temperature sensor (68) for measuring the temperature of the process gas (2). [14] Process preparation device (1) according to claim 13, characterized by that the relative humidity sensor (65) and the temperature sensor (68) of the first measuring device (66) are designed as a structural unit. [15] Process gas conditioning device (1) according to one of the preceding claims, characterized by that the temperature control unit (51) has a heating device (54) which is designed as a device component (4) and has a heating device inlet (52) and a heating device outlet (53). [16] Process gas conditioning device (1) according to one of the preceding claims, characterized bythat the process gas conveying device (12) is arranged downstream of the process gas dehumidification device (18) and upstream of the process gas tempering device (19). [17] Process gas conditioning device (1) according to one of the preceding claims, characterized by that upstream of the process gas dehumidification device (18) there is arranged a second measuring device (70) having a relative humidity sensor (69) for measuring the relative humidity of the process gas (2). [18] Process gas conditioning device (1) according to claim 17, characterized by that the second measuring device (70) further comprises a temperature sensor (71) for measuring the temperature of the process gas (2). [19] Process preparation device (1) according to claims 17 and 18, characterized by that the relative humidity sensor (69) and the temperature sensor (71) of the second measuring device (70) are designed as a structural unit. [20] Process gas conditioning device (1) according to one of the preceding claims, characterized by that the process gas conditioning device (1) has a humidification device (55) which is arranged in particular downstream of the process gas dehumidification device (18) and upstream of the process gas tempering device (19) and is designed as a device component (4), which has a humidification device inlet (56) and a humidification device outlet (57). [21] Method for the preparation of process gas (2) for treating a process material in a process apparatus (3) during a drying phase and a cooling phase, comprising a process gas preparation device (1) with a process gas inlet (7) and a process gas outlet (10) fluidically connected to the process apparatus (3), wherein the process gas (2) flows on a preparation section (13) extending from the process gas inlet (7) to the process gas outlet (10), with a process gas dehumidification device (18) designed as a device component (4) in the flow direction of the process gas (2) and a process gas tempering device (19) designed as a device component (4) arranged downstream of the process gas dehumidification device (18),wherein the process gas dehumidification device (18) has a dehumidification device inlet (20) and a dehumidification device outlet (21), and the process gas temperature control device (19) has a temperature control device inlet (22) and a temperature control device outlet (23), and wherein the process gas temperature control device (19) has a temperature control unit (51) for the process gas (2) designed as a device component (4) and having a temperature control unit inlet (49) and a temperature control unit outlet (50), a cooling unit (63) for the process gas (2) designed as a device component (4) and having a cooling unit inlet (61) and a cooling unit outlet (62), and a bypass unit (60) designed as a device component (4) and having a bypass inlet (58) and a bypass outlet (59) and connected in parallel to the temperature control unit (51). has,wherein a valve arrangement (64) designed as a device component (4) is arranged on the bypass unit (60) for selectively flowing through the temperature control unit (51) or the bypass unit (60), and with a first measuring device (66) having a relative humidity sensor (65) for measuring the relative humidity of the process gas (2), wherein the first measuring device (66) is arranged downstream of the process gas dehumidification device (18) and with a control device (67), , characterized by that the cooling unit (63) is a component of the bypass unit (60), and wherein during the treatment of the process material in the process apparatus (3) the flow passes through the tempering unit (51) in the drying phase and the flow passes through the bypass unit (60) having the cooling unit (51) in the cooling phase. [22] Method according to claim 21, characterized by that the humidity of the process gas (2) flowing through the process gas conditioning device (1) is regulated. [23] Method according to claim 22, characterized by that the first measuring device (66) has a temperature sensor (68) for measuring the temperature of the process gas (2), and in the control device (67) a first absolute humidity comparison is carried out between the absolute humidity setpoint value and the absolute humidity actual value, wherein the absolute humidity actual value is determined from a relative humidity value measured by the relative humidity sensor (65) of the first measuring device (66) and a temperature value measured by the associated temperature sensor (68). [24] Method according to claim 23, characterized by that the absolute humidity actual value determination takes place in the first measuring device (66) or in the control device (67). [25] Method according to claim 23 or 24, characterized bythat the control device (67), taking into account the first absolute humidity comparison, transmits an absolute humidity control variable to the process gas dehumidification device (18) and / or the humidification device (55) in order to regulate the absolute humidity of the process gas (2). [26] Method according to one of claims 22 to 24, characterized by that the humidity is regulated at least during the drying phase. [27] Method according to one of claims 21 to 26, characterized by that the process gas (2) is humidified by means of a humidification device (55) arranged in particular downstream of the process gas dehumidification device (18) and upstream of the process gas tempering device (19). [28] Method according to one of claims 21 to 27, characterized byin that the process gas dehumidification device (18) has an adsorption dehumidification unit (29) having a regeneration unit (34), wherein the adsorption dehumidification unit (29) is at least partially regenerated by the regeneration unit (34). [29] Method according to claim 28, characterized by in that the regeneration unit (34) has a regeneration gas heating device (42) which heats a regeneration gas (35), so that the regeneration gas (35) absorbs moisture as it flows through the adsorption dehumidification unit (29), whereby the adsorption dehumidification unit (29) is at least partially dried and thereby regenerated. [30] Method according to claim 29, characterized by that the regeneration gas (35) flows through the adsorption dehumidification unit (29) in countercurrent to the process gas (2). [31] Method according to one of claims 21 to 30, characterized byin that the process gas dehumidification device (19) has a preheating unit (47) which is expediently arranged upstream of the condensation dehumidification unit (26), wherein the preheating unit (47) heats the process gas (2) entering the process gas conditioning device (1) via the process gas inlet (7) in order to prevent the condensation dehumidification unit (26) from freezing or to heat the process gas (2) for humidifying the process gas (2). [32] Method according to one of claims 21 to 31, characterized by that each device component (4) of the process gas conditioning device (1) can be switched on and / or off. [33] Method according to claim 32, characterized bythat upstream of the process gas dehumidification device (18) there is arranged a second measuring device (70) having a relative humidity sensor (69) for measuring the relative humidity of the process gas (2) and a temperature sensor (71) for measuring the temperature of the process gas (2), and in the control device (67) a second absolute humidity comparison is carried out between the absolute humidity setpoint value and the absolute humidity actual value, the absolute humidity actual value being determined from a relative humidity value measured by the relative humidity sensor (69) of the second measuring device (70) and a temperature value measured by the associated temperature sensor (71). [34] Method according to claim 33, characterized by that the absolute humidity actual value determination takes place in the second measuring device (70) or in the control device (67). [35] Method according to claim 33 or 34, characterized bythat the control device (67), taking into account the second absolute humidity comparison, can transmit an absolute humidity control variable to each device component (4) in order to switch the respective device component (4) of the process gas conditioning device (18) on and / or off. [36] Method according to one of claims 21 to 35, characterized by that the process gas processing device (1) has a process gas conveying device (12) designed as a device component (4), which conveys the process gas (2) on a processing section (13) extending from the process gas inlet (7) to the process gas outlet (10).

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