JP4694884B2 - Moisture removal method and moisture removal device - Google Patents

Description

  The present invention relates to a method and a water removal apparatus for efficiently removing moisture from an object while suppressing volatilization of useful components such as aroma components as much as possible.

  Conventionally, in the field of the food industry, food is dried or the extract is concentrated and dried in order to improve the storage stability and ease of use of the food and extract. For example, the food is heated under normal pressure or reduced pressure. Concentration / drying methods, freeze-drying methods, freeze-concentration methods, methods using a reverse osmosis membrane or ultrafiltration membrane, and the like are known.

  However, the concentration / drying method with heating tends to deteriorate the food and extract itself or the flavor easily due to heating. The freeze-drying method and freeze-concentration method are less efficient and costly, although they are less susceptible to heat deterioration. There was a problem that. Further, the method of concentrating using a reverse osmosis membrane or an ultrafiltration membrane has a problem that the concentration is low and the proliferation of various bacteria is likely to occur during the treatment. Furthermore, in any of the methods, there is a problem that useful components such as aroma components contained in foods and extracts together with moisture are easily lost, and the flavor of the resulting product is lowered.

  For this reason, various methods have been proposed for concentrating and drying without impairing the original flavor of foods and extracts. For example, Patent Document 1 listed below discloses a mixture of nodules and water, or an extract of this mixture. After extracting 50% or more of the volatile components from the liquid as a separated liquid using a gas-liquid countercurrent contact device, the solid content of knots is removed when the mixture is used as it is, and the liquid remaining as it is when the extract is used. A method for producing a concentrated extract of nodules characterized by mixing the volatile component with the concentrated solution is disclosed.

  The following Patent Document 2 includes the following steps: (A) a step of concentrating a coffee liquid extracted from roasted and pulverized coffee beans, and separating a concentrated solution from a concentrated removal solution, (B) the step (A) A step of concentrating the concentrated removal liquid obtained in step 1 with a reverse osmosis membrane (NaCl rejection 99% or more) at an operating pressure of 0.98 MPa or less, and concentrating the aromatic components contained in the concentrated removal liquid to obtain a concentrated aromatic liquid; And (C) a method for producing a concentrated coffee liquid comprising a step of preparing a concentrated coffee liquid by mixing the concentrated liquid obtained in the (A) process and the concentrated aromatic liquid obtained in the (B) process. Has been.

Patent Document 3 listed below includes a step of steam-distilling a marine product raw material to obtain a scent component in the raw material, and a step of concentrating the scent component obtained by the steam distillation using a reverse osmosis membrane to obtain an aroma of the marine product raw material And a method for producing an extract of a marine product having excellent flavor.
JP-A-9-308455 JP 2003-204757 A JP 2004-89141 A

  However, as described in Patent Documents 1 to 3, the method of separating the volatile component from the raw material and mixing it with the extract from the raw material has a stable quality because the balance of the fragrance is easily changed. There was a problem that it was difficult to obtain a product and the number of processes was increased.

  Accordingly, an object of the present invention is to provide a method and a water removal apparatus for easily and efficiently removing water from the water removal object without impairing the preferred flavor of the water removal object.

As a result of earnest research to achieve the above object, the present inventors dried and concentrated the moisture removal object in a gas to which a predetermined volatile component contained in the moisture removal object was added . It has been found that moisture can be removed without impairing the flavor, and the present invention has been completed.

That is, the water removal method of the present invention uses a gas having a water vapor partial pressure lower than the saturated water vapor pressure at the ambient temperature or operating temperature and added with a predetermined volatile component contained in the water removal object. Further, it is characterized in that moisture is removed from the moisture removal object under normal pressure or reduced pressure.

According to the moisture removal method of the present invention, when moisture is removed from a moisture removal object, moisture is efficiently removed by using a gas having a water vapor partial pressure lower than the saturated water vapor pressure at the ambient temperature or operation temperature. Can be removed. Furthermore, by using a gas to which a predetermined volatile component contained in the moisture removal target is added as the gas, volatilization of a useful volatile component contained in the moisture removal target can be suppressed, Moisture can be removed while maintaining the preferred flavor of the moisture removal object.

In the moisture removal method of the present invention, the gas has a water vapor partial pressure lower than the saturated water vapor pressure at the ambient temperature or operation temperature, and the predetermined volatile component contained in the moisture removal object and the water It is preferable to use a gas to which a volatile component to be added to the object to be removed is added .

  According to this, it is possible not only to efficiently remove moisture while maintaining the preferable flavor and the like of the moisture removal object, but also to easily impart a desired flavor to the moisture removal object.

In the water removal method of the present invention, water is recovered from the gas used for water removal, the volatile component mixed in the water is recovered, and the volatile component added to the gas is used as the volatile component. It is preferable to use it. Furthermore, the volatile component contained in the gas used for moisture removal can be recovered and used as the volatile component added to the gas. Furthermore, water is recovered from the gas used for water removal, the volatile components mixed in the water are recovered, and volatile components remaining in the gas after recovering the water are also recovered. A volatile component can also be used as the volatile component added to the gas.

  According to these, the volatilization of the flavor of the water removal target can be effectively suppressed by collecting and supplementing the volatile components released from the water removal target.

  Furthermore, it is preferable to circulate and use the gas after collecting the moisture.

  According to this, among the volatile components released from the water removal target, the volatilization of the volatile components from the water removal target is caused by the partial pressure of the volatile components remaining in the gas after collecting the water. Since it is suppressed, the loss of flavor of the moisture removal target can be effectively suppressed.

  Furthermore, it is preferable to use an inert gas as the gas, and it is more preferable to use nitrogen gas as the inert gas.

  According to these, it is possible to prevent oxidation of the volatile component and the water removal object during the water removal treatment, and to obtain a product with a better flavor.

  The water removal device of the present invention includes a pump for transporting a gas used for drying / concentration of a water removal object, a temperature control device for heating or cooling the gas, and the gas whose temperature is adjusted by the temperature control device. And a moisture removal tank for contacting the moisture removal object, and a means for adding a predetermined volatile component contained in the moisture removal object to a gas used for drying and concentrating the moisture removal object. It is characterized by that.

  According to the moisture removing device of the present invention, the temperature of the gas can be adjusted by the temperature control device and introduced into the moisture removing tank, where it can be brought into contact with the moisture removing object to remove the moisture. The partial pressure of the predetermined volatile component contained in the moisture removal target is increased by adding the predetermined volatile component contained in the moisture removal target to the gas by the addition means of the sexual component, It is possible to suppress the volatilization of the volatile component and perform the water removal while maintaining the flavor of the water removal object.

  In the moisture removal apparatus of the present invention, the volatile component addition means is configured to add a predetermined volatile component contained in the moisture removal object and a volatile component to be added to the moisture removal object. It may be.

  According to this, not only can moisture be removed while maintaining the preferred flavor of the moisture removal object, but also a desired flavor can be easily imparted to the moisture removal object.

  Further, the moisture removing device of the present invention includes a recovery device for moisture contained in the gas taken out from the moisture removal tank, and a recovery device for volatile components contained in the collected moisture, Preferably, the volatile component adding means is configured to mix the volatile component recovered by the recovery device with a gas used for drying / concentration of the moisture removal object, or the moisture removal tank. It has a recovery device for volatile components contained in the gas taken out from the inside, and the means for adding the volatile components is used to dry and concentrate the volatile components recovered by the recovery device. It is preferable to be configured to be mixed with the gas to be used, and furthermore, a device for recovering moisture contained in the gas taken out from the moisture removal tank, and volatile contained in the collected moisture And a second recovery device for recovering a volatile component contained in the gas after recovering moisture, and the means for adding the volatile component includes the first recovery device. It is preferable that the volatile component recovered by the second recovery device is mixed with a gas used for drying / concentration of the moisture removal object.

  According to these, by collecting the volatile component released from the water removal target object and mixing with the gas used for drying / concentration of the water removal target object, the partial pressure of the volatile component is increased, Volatilization of the volatile component from the water removal target can be suppressed, and loss of flavor of the water removal target can be effectively suppressed.

  Moreover, in the water removal apparatus of this invention, it is preferable to be comprised so that the gas after collect | recovering the said water | moisture contents by the said water | moisture-content collection | recovery apparatus may be circulated as a gas used for drying and concentration of the said water removal object.

  According to this, by reusing the gas after collecting moisture as the gas used for drying / concentration of the moisture removal target, among the volatile components released from the moisture removal target, Since the volatilization of the volatile component from the water removal target is suppressed by the partial pressure of the volatile component remaining in the gas, the flavor loss of the water removal target can be effectively suppressed. In addition, by reusing the gas after collecting moisture as a gas used for drying / concentration of the moisture removal object, the collected moisture and volatile components contained in the gas are collected and mixed with the gas. Moreover, the loss of the flavor of the moisture removal object can be more effectively suppressed. Furthermore, the volatile components discharged out of the system can be suppressed as much as possible, and since the volatile components are removed from the discharged water, there is no problem such as odor, and it is more environmentally friendly.

  Furthermore, the means for adding the volatile component may be configured to add the volatile component to the gas after the gas used for drying / concentration of the moisture removal object passes through the temperature control device. preferable.

  According to this, a volatile component can be added to the gas used for drying / concentration of a water removal target object, preventing the heat loss etc. of a volatile component.

  ADVANTAGE OF THE INVENTION According to this invention, a water | moisture content can be removed easily and efficiently, without impairing the preferable flavor of a water removal target object.

First, the water removal method of the present invention will be described.
In the moisture removal method of the present invention, the gas used for drying / concentration (hereinafter also referred to as a dry atmosphere) is a gas having a water vapor partial pressure lower than the saturated water vapor pressure at the ambient temperature or operating temperature.

  Since the evaporation of moisture occurs due to the pressure difference between the water vapor partial pressure and the saturated water vapor pressure, the larger the pressure difference, the easier it is to evaporate. Therefore, by using a gas having a water vapor partial pressure lower than the saturated water vapor pressure at the environmental temperature or the operation temperature, water can be efficiently removed from the water removal target even when the processing temperature is lowered.

  The environmental temperature or the operating temperature is preferably −15 to 80 ° C. in order to prevent deterioration of the water removal target due to heat, and more preferably 30 to 80 ° C. from the viewpoint of water removal efficiency. In the moisture removal method of the present invention, the temperature can be easily managed because it can be managed not by radiant heat or contact heating as in the conventional method but by the ambient temperature.

  Further, since the water vapor pressure varies depending on the temperature, it is difficult to specifically define the water vapor partial pressure lower than the saturated water vapor pressure at the environmental temperature or the operating temperature, and it may be set as appropriate. It is preferable to have a water vapor partial pressure that is 40% or more lower than the saturated water vapor pressure at the time of temperature, and more preferable to have a water vapor partial pressure that is 60% or more lower from the viewpoint of water removal efficiency.

Moreover, the gas used as a dry atmosphere in the moisture removal method of the present invention is a gas to which a predetermined volatile component contained in the moisture removal object is added .

Similarly to moisture, the volatile component is more likely to volatilize as the partial pressure of the volatile component in the gas used as the dry atmosphere is lower, and is less likely to volatilize as the saturation state is approached. Therefore, as the volatile component is added to the gas used as the dry atmosphere and the partial pressure of the volatile component is increased, the volatile component is less likely to volatilize from the object to be removed, and only moisture is evaporated while retaining the volatile component. Can be made.

  In the present invention, the water removal target is not particularly limited, and examples thereof include various foods and drinks, aromatic products such as incense, potpourri, and other fragrances, cosmetics, insect repellents, pharmaceuticals, and oils and organic solvents. Among them, those that are liable to lose flavor, aroma and the like in normal drying / concentration treatment are preferable. For example, in foods and drinks, kelp, knots, tea and their extracts, various ingredients, dried fruits, soy sauce, miso, sake, instant foods, other marine products, livestock products, agricultural products and processed products thereof are preferable examples. it can.

  In addition, the predetermined volatile component means a preferable fragrance component that the water removal target has, and since there are various fragrance components depending on the water removal target, it cannot be generally described. May be selected as appropriate. For example, odorous components such as phenols are known for nodules and organic esters and terpenes are known for fruits.

  Similarly to the water vapor pressure, the partial pressure of the predetermined volatile component varies depending on the temperature and the type of the volatile component, and thus it is difficult to define it in general. The closer to the saturated vapor pressure of the sex component, the better. Specifically, the partial pressure of the volatile component is preferably 20% or more of the saturated vapor pressure of the volatile component, and more preferably 40% or more.

In the present invention, as a gas used as a dry atmosphere, not only a predetermined volatile component contained in a moisture removal target but also a gas added with a volatile component to be added to the moisture removal target can be used.

  The volatile component desired to be given to the water removal object may be appropriately selected according to the water removal object. Similarly to the above, the closer the partial pressure of the volatile component is to the saturated vapor pressure, A desired flavor can be efficiently imparted. For example, when the water removal target is a nodule or an extract thereof, a liquid such as a liquid smoke can be used as the volatile component.

  In the present invention, an inert gas is preferably used as the gas used in the dry atmosphere, and specifically, nitrogen gas is preferably used. By using an inert gas, it is possible to prevent oxidation of water removal objects and volatile components during the treatment.

  The moisture removal method of the present invention is to remove moisture from a moisture removal object under normal pressure or reduced pressure by bringing the gas as described above into contact with the moisture removal object. In the present invention, moisture can be removed more efficiently by performing the treatment under reduced pressure.

  The method for bringing the gas into contact with the moisture removal object may be such that the gas and the moisture removal object can be efficiently contacted according to the form of the moisture removal object. In the moisture removing method of the present invention, the moisture transport efficiency is good because the dry atmosphere flows. For example, when the water removal target is a solid material such as knots, it may be placed on a wire mesh or the like and brought into contact with the gas. When the water removal target is a liquid such as an extract, the gas is Just bubbling.

In the water removal method of the present invention, water is recovered from the gas used for water removal, the volatile component mixed in the water is recovered, and used as the volatile component added to the gas. Is preferred. Examples of the method for recovering moisture from the gas include a method for condensing and recovering moisture in the gas by cooling the gas, and a method using a hygroscopic agent. In addition, methods for recovering volatile components mixed in water include, for example, liquid separation using centrifugation, a method using a fractionator and a rectifier, liquid-liquid extraction using an organic solvent, and recovered water. Is suitably heated at a temperature lower than the boiling point of water, and a method of preferentially volatilizing volatile components can be used.

Moreover, it is also preferable to collect | recover the said volatile component from the said gas used for the water | moisture content removal, and to use as said volatile component added to the said gas. In this case, the volatile component may be directly recovered from the gas used for removing moisture, or the volatile component may be recovered from the gas after recovering moisture from the gas used for removing moisture.

  Furthermore, in this invention, you may circulate and utilize the gas after collect | recovering the said water | moisture contents as a dry atmosphere. As a result, volatile components that are not mixed in the recovered water can be used as they are, and not only can the running cost be reduced, but also recovery loss of volatile components can be suppressed, and volatile components discharged out of the system can be used as much as possible. Since it can be suppressed, it is environmentally friendly. In this case, the volatile component recovered from the moisture and the volatile component recovered from the gas used for the moisture removal can be mixed into the circulating gas.

  Next, the moisture removing apparatus of the present invention will be described with reference to the drawings. FIG. 1 shows a schematic configuration diagram of an embodiment of the moisture removing apparatus of the present invention.

  A water removal apparatus 10 shown in FIG. 1 includes a pump 1 that transports a gas used for drying / concentration of a water removal object, a temperature control device 2 that heats or cools the gas, the gas, and the water removal object. A water removal tank 3 in contact with water, a recovery device 4 for moisture contained in the gas taken out from the moisture removal tank, and a first recovery device for volatile components contained in moisture recovered from the gas in the moisture removal tank. 5 and a second recovery device 6 for volatile components contained in the gas after recovering the moisture. The volatile components recovered by the first recovery device 5 and the second recovery device 6 are mixed with the gas used for drying / concentration of the moisture removal target after passing through the temperature control device 2. It is configured.

  Therefore, in this moisture removal apparatus 10, the gas used for drying / concentration of the moisture removal object is heated or cooled by the temperature control apparatus 2, and then sent to the moisture removal tank 3 by the pump 1. It comes in contact with the moisture removal object held inside. Here, since the temperature-adjusted gas is adjusted so as to have a water vapor partial pressure lower than the saturated water vapor pressure at the environmental temperature or the operating temperature, the water content of the water removal object in the water removal tank 3 Can be efficiently evaporated.

  Then, the gas in the water removal tank 3 whose water vapor partial pressure has been raised is sent to the water recovery device 4 where the water is removed and recovered. The moisture recovery device 4 includes a cooling pipe and a moisture recovery tank, for example, when a method of removing and recovering moisture by condensing moisture by lowering the temperature of the recovered gas. The recovered water is discharged out of the system.

  The recovered moisture is sent to the first recovery device 5 for the volatile component, and after the volatile component contained in the moisture is recovered, it is discharged. Examples of a method for recovering volatile components contained in water include a method of recovering using a difference in boiling point from water using a fractionator. The recovered volatile component is mixed with a gas used for drying / concentration of the water removal target, and used to increase the partial pressure of the volatile component in the gas.

  On the other hand, the gas after recovering the moisture is sent to the second recovery device 6 for the volatile component, and after the volatile component contained in the gas is recovered, it is discharged out of the system. Examples of a method for recovering the volatile component contained in the gas include a method of trapping and recovering the volatile component at a temperature lower than that of the water recovery device 4. In order to increase the partial pressure of the volatile component in the gas, the recovered volatile component is mixed with a gas used for drying / concentration of the water removal target after passing through the temperature control device 2. Used.

  Note that the volatile components recovered by the first recovery device 5 and the second recovery device 6 are mixed in the gas after passing through the temperature control device 2 in order to prevent alteration due to heat and to facilitate reduction. It is preferable. However, mixing can be performed before and after the pump 1. Further, only one of the first recovery device 5 and the second recovery device 6 may be installed. Furthermore, a device for directly recovering volatile components from the gas taken out from the water removal tank 3 may be provided, and the recovered volatile components may be mixed with a gas used for drying and concentrating the water removal object.

  FIG. 2 shows another embodiment of the moisture removing apparatus of the present invention. The moisture removing device 12 brings the pump 1 that transports the gas used for drying and concentrating the moisture removing object, the temperature control device 2 that heats or cools the gas, and the gas and the moisture removing object into contact with each other. After having collected the moisture, the moisture removal tank 3, the collection device 4 for the moisture contained in the gas taken out from the moisture removal tank, and the collection device 5 for the volatile component contained in the collected moisture The water-removal object is sent to the pump 1 again, reused as a gas used for drying / concentration of the water-removal object, and the recovered volatile component passes through the temperature control device 2. It is comprised so that it may mix with the gas used for drying and concentration.

  In this moisture removing device 12, the gas in the moisture removing tank 3 whose water vapor partial pressure has been raised is sent to the moisture collecting device 4, where moisture is removed and collected. The moisture recovery device 4 includes a cooling pipe and a moisture recovery tank, for example, when a method of removing and recovering moisture by condensing moisture by lowering the temperature of the recovered gas.

  The recovered water is sent to the volatile component recovery device 5, where volatile components contained in the water are recovered and then discharged out of the system. The recovered volatile component is mixed with a gas that has passed through the temperature control device 2 and used for drying / concentration of the water removal target, and is used to increase the partial pressure of the volatile component in the gas. The The volatile component may be mixed in the gas before and after the pump 1.

  Further, the gas after collecting the water is sent to the pump 1 again and reused as a gas used for drying and concentrating the water removal object. The gas from which moisture has been removed contains volatile components that have volatilized from the moisture removal object, and the partial pressure of the volatile components is high. Therefore, by drying and concentrating using such a gas, volatilization of the volatile component from the water removal target can be more effectively suppressed.

  As in the embodiment of FIG. 1, a second recovery device that recovers volatile components from the gas that has passed through the moisture recovery device 4 is provided, and the volatile components recovered by the second recovery device are You may make it return to the said gas. In this case, by returning the volatile component to the gas that has passed through the temperature control device 2, heat loss of the volatile component can be prevented and reduced to a gas.

  FIG. 3 shows a temperature control device consisting of a blower pump, a heating flask and a mantle heater, a moisture removing tank consisting of a sample tube for steam distillation, a moisture collecting device and flavor collecting device consisting of a serpentine cooling tube and a moisture collecting flask. As shown in Fig. 1, a continuous water removal device was produced by continuous connection. Using this water removing device, the dried crushed koji was dried under the following conditions.

  After putting 100 g of crushed bonito into the sample tube for steam distillation and replacing the gas in the system with nitrogen gas, the nitrogen gas in the system is circulated with a blow pump and the temperature of the nitrogen gas entering the sample tube for steam distillation Was heated to 40-50 ° C.

  Moreover, 1 to 3 degreeC cooling water was circulated through the serpentine cooling tube, nitrogen gas discharged | emitted from the sample tube for water vapor | steam distillation was cooled, water vapor | steam was condensed, and it collect | recovered to the water recovery flask. The nitrogen gas after recovering the water was warmed to 40 to 50 ° C., supplied again to the sample tube for steam distillation, and brought into contact with the crushed koji product. Here, the saturated water vapor pressure is 7.375 kPa at 40 ° C. and 0.758 kPa at 3 ° C. Therefore, by cooling the nitrogen gas discharged from the sample tube for steam distillation to 3 ° C. by the above operation, moisture having an excess steam partial pressure of 0.758 kPa or more is condensed and recovered, and at the same time, the steam partial pressure is reduced to 0. 0. It can be adjusted to 758 kPa. And by heating this nitrogen gas to 40 ° C., nitrogen gas having a water vapor pressure lower by about 90% than the saturated water vapor pressure (40 ° C.) can be reduced.

  On the other hand, the recovered moisture is returned to 25 ° C., and the volatile component contained in the moisture is easily volatilized, that is, the volatile component having a higher saturated vapor pressure than water at the same temperature is heated from 3 ° C. to 25 ° C. By maintaining the state in which the saturated vapor pressure difference of the volatile component is greater than the saturated vapor pressure difference between the same temperatures, the partial pressure of the volatile component in the nitrogen gas in the water recovery flask is increased, and this nitrogen The gas was mixed with nitrogen gas supplied to the steam distillation sample tube.

  When the collected moisture became 5 ml, the blower pump was stopped and the drying process was completed. The dried dried bonito crushed product has a strong aroma as compared with the conventional dried product at 80 ° C. and the reduced pressure dried product heated at 40 ° C., which is highly evaluated. It was. Moreover, when this apparatus was disassembled, odors in the system were confirmed, and it was confirmed that the scent of bonito was full. As a result, it was confirmed that the aroma component of bonito was dispersed in nitrogen gas and the partial pressure of the aroma component was increased. Note that the volatile components in the nitrogen gas reduced to the steam distillation sample tube during drying were measured with a gas chromatograph, and the total peak area obtained was measured for 1 hour without collecting water in the same apparatus. The value was about 15% lower than the total peak area obtained by gas chromatographic measurement when it was circulated to reach an equilibrium state. Since the volatile component concentration is proportional to the partial pressure, it was found that the operation can be performed at a partial pressure of about 85% of the equilibrium state (≈saturated vapor pressure).

  Using the water removing apparatus of Example 1, 100 g (Brix 5%) of koji extract was concentrated under the same conditions. The concentration rate was doubled, 50 ml of water was collected, and the concentration process was completed at that time.

  The obtained koji extract concentrate had a strong fragrance and was highly evaluated as compared with a normal pressure concentrate obtained by a conventional method and a vacuum concentrate obtained by heating at 40 ° C.

  Using the water removal apparatus of Example 1, 2 g of the liquid smoke was previously placed in the water recovery flask, and the dried koji kneaded product was dried for 1 hour under the same conditions. As a result, 5 ml of water could be recovered.

  It was confirmed that the dried dried bonito crushed product had a stronger scent than the dried dried bonito crushed product obtained in Example 1, and could be dried and added with aroma components simultaneously. .

  Using the water removal apparatus of Example 1, 2 g of the liquid smoke was previously placed in the water recovery flask, and the koji extract was concentrated for 40 minutes under the same conditions as in Example 2. As a result, 5 ml of water could be recovered.

  The obtained koji extract concentrate had a stronger scent than the koji extract concentrate obtained in Example 2, and it was confirmed that drying and addition of aroma components could be performed simultaneously.

  The moisture removal method and moisture removal apparatus of the present invention are those that are liable to lose their flavor and aroma when subjected to normal drying / concentration treatment, such as kelp, kushi, tea, extracts thereof, various ingredients, etc. It is suitable for drying and concentrating.

It is a schematic block diagram which shows one Embodiment of the moisture removal apparatus of this invention. It is a schematic block diagram which shows other embodiment of the water | moisture-content removal apparatus of this invention.

Explanation of symbols

1. Pump 2. 2. Temperature control device 3. Water removal tank 5. Moisture recovery device 5,6. Volatile component recovery device 10, 11, 12 Moisture removal device

Claims (15)

Using a gas having a water vapor partial pressure lower than the saturated water vapor pressure at the ambient temperature or operating temperature, and with the addition of a predetermined volatile component contained in the water removal object, the water removal object under normal pressure or reduced pressure A method for removing moisture, comprising removing moisture from the water. As the gas has a low water vapor partial pressure than the saturation vapor pressure at ambient temperature or operating temperature, and a predetermined volatile components and volatile components to be imparted to the moisture removal target contained in the water removal target The method for removing moisture according to claim 1, wherein the added gas is used. The water removal method according to claim 1 or 2, wherein water is recovered from the gas used for water removal, the volatile component mixed in the water is recovered and used as the volatile component added to the gas. . The volatile component contained in the gas used for moisture removal is recovered, and the volatile component is used as the volatile component added to the gas. Removal method. Moisture is collected from the gas used for removing moisture, the volatile components mixed in the moisture are collected, and volatile components remaining in the gas after collecting the moisture are also collected, and these volatile components are collected. the method for removing of claim 3 water according employed as the volatile component to be added to the gas.   The method for removing moisture according to claim 3 or 5, wherein the gas after collecting the moisture is circulated and used.   The water removal method according to claim 1, wherein an inert gas is used as the gas.   The moisture removing method according to claim 7, wherein nitrogen gas is used as the inert gas.   A pump for transporting a gas used for drying / concentration of a water removal target, a temperature control device for heating or cooling the gas, and the gas adjusted in temperature by the temperature control device and the water removal target are brought into contact with each other. A moisture removal apparatus comprising: a moisture removal tank; and means for adding a predetermined volatile component contained in the moisture removal object to a gas used for drying and concentrating the moisture removal object.   The moisture removal unit according to claim 9, wherein the volatile component addition means is configured to add a predetermined volatile component contained in the moisture removal target and a volatile component desired to be added to the moisture removal target. apparatus.   A recovery device for moisture contained in the gas taken out from the moisture removal tank; and a recovery device for volatile components contained in the recovered moisture. The moisture removing apparatus according to claim 9, wherein the collected volatile component is mixed with a gas used for drying and concentrating the moisture removing object.   It has a recovery device for volatile components contained in the gas taken out from the moisture removal tank, and the volatile component addition means uses the recovery device to recover the volatile components recovered by the recovery device. The moisture removing apparatus according to claim 9, wherein the moisture removing apparatus is configured to be mixed with a gas used for drying and concentration.   A recovery device for moisture contained in the gas taken out from the moisture removal tank, a first recovery device for collecting volatile components contained in the collected moisture, and volatilization contained in the gas after collecting moisture A volatile component adding means for drying the volatile component recovered by the first recovery device and the second recovery device. The moisture removing apparatus according to claim 9, wherein the moisture removing apparatus is configured to mix with a gas used for concentration.   The water removal apparatus according to claim 11 or 13, wherein the gas after the water is collected is circulated as a gas used for drying and concentration of the water removal object.   The volatile component adding means is configured to add the volatile component to the gas after the gas used for drying / concentration of the water removal object passes through the temperature control device. The water removing apparatus according to any one of 14.

Images