KR100427560B1 - Media fluidized liquid dryer - Google Patents

Abstract

The present invention relates to a liquid drying apparatus using a fluid medium, which allows the fluid medium 160 and the dried material to be transported, but the dried material is dried during the transfer process through a drying heat by preheating air and a drying heat by steam. Drying means 110 to be carried; The dry solids produced by the drying means 110 is separated from the fluid medium 160, but the dry solids are collected and discharged to the outside, and the fluid medium 160 is the next fluid medium storage / transport means ( Collecting means 120 to be transferred to 130; Recovering and storing the separated fluid medium 160 through the collecting means 120 and receiving the dry items to be attached to the fluid medium 160, the fluid medium 160 is attached to the preheated air A fluid medium storage / transport means (130) for circulating the fluid medium (160) by flowing into the drying means (110); Since it is configured to be connected to the drying means 110 to collect and discharge the solids of the fine powder generated during drying or filter dust collecting means 140 for filtering the dry exhaust gas, liquid or viscosity containing a large amount of granular solids It can be easily dried and difficult to dry and can be applied regardless of the properties of the dry, it is possible to quickly dry the dry matter, and to maintain the drying efficiency and heat transfer efficiency continuously, Continuous drying makes it possible to minimize the moisture content of the dry matter.

Description

Liquid drying device using liquid media {MEDIA FLUIDIZED LIQUID DRYER}

The present invention relates to a liquid drying apparatus using a fluid medium, and more particularly, to be able to perform a drying function of a combination of a liquid drying function and a solid state drying function can be applied to any dry matter regardless of properties. In addition, the present invention relates to a liquid drying apparatus using a fluidized medium to improve the drying efficiency and to minimize the moisture content of the dry matter through continuous drying.

Looking at the drying principle of the conventional drying apparatus, the spray drying apparatus supplies the preheated air into the chamber and then sprays the liquid dry matter to dry the dry matter by contacting the droplets of the dry matter and the preheated air. It is used for liquid-liquid drying of dissolved solids or fine solids by the method. The airflow drying device transports a solid dry matter by using preheated air and dry the dry matter by contacting the airflow and the dry matter. It is used for the solid drying to lower the moisture content by applying to the drying of solids completely solidified by the method.

However, the spray drying apparatus has a disadvantage in that the drying efficiency drops sharply when the droplets are not uniformly sprayed inside the chamber and the nozzles are clogged by solids in the spraying liquid, and the airflow drying apparatus has a high water content of the dry matter (liquid phase). In the case that it is difficult to apply, and if the drying is not smooth, some of the buildings are attached to the inner wall of the device, which makes it impossible to operate the device.

In addition, the spray drying device and the airflow drying device is limitedly applied due to the condition of the dry matter, and thus, the development of a new drying device that can be applied to all dry matters without regard to the properties of the dry matter. It is required.

The present invention has been made to solve the above problems and suggestions, the purpose of which is to take a combination form to perform the liquid drying function by the spray drying apparatus and the solid state drying function by the airflow drying apparatus. The present invention provides a liquid drying apparatus using a fluid medium that enables easy drying of dry items that are difficult to dry due to high liquidity or high viscosity of granular solids, and can be applied regardless of the properties of the dry matter. have.

Another object of the present invention is to attach the dry matter in the form of a thin film on the outer surface of the fluid medium to improve the drying efficiency through direct drying heat by preheating air and indirect drying heat by steam and to dry quickly It is to provide a liquid drying apparatus using a fluid medium to be made.

It is still another object of the present invention to provide a liquid drying apparatus using a fluidized medium which enables continuous drying of dried objects to minimize moisture content.

1 is an overall configuration diagram schematically showing a liquid drying apparatus using a fluid medium according to the present invention.

Figure 2 is a detailed excerpt of the main portion shown to explain the principle of circulation and separation of the liquid drying apparatus using a fluid medium according to the present invention.

Figure 3 is a cross-sectional view showing a part "A-A" of Figure 2 of the liquid drying apparatus using a fluid medium according to the present invention.

Figure 4 is a detailed view showing the separation principle of the fluid and dry solids of the liquid drying apparatus using the fluid in accordance with the present invention.

Figure 5 is a detailed view showing the drying principle of the liquid drying apparatus using a fluid medium according to the present invention.

Explanation of symbols on the main parts of the drawings

110: drying means 111: drying chamber

112: steam jacket 113: heat transfer tube

114: cyclone separator 120: collecting means

121: collection room 122: screen

123: compressed air induction pipe 124: distributor

125: guide pipe 126: rotary feeder

130: fluid medium storage / transfer means 131: fluid medium storage tank

132a: regulating handle 132b: regulating valve

133: rotary feeder 134: air preheater

135: injector 136: circulation tube

140: filter dust collecting means 141: bag filter

142: rotary feeder 143: collecting bin

144: manned blower 150: dry storage tank

160: liquid medium

The present invention for achieving the above object is a drying means for transporting the fluid medium and the dried object to be dried in the transfer process through the drying heat by preheating air and the drying heat by steam; It is connected to the lower portion of the drying means, the dry solids produced by the drying means to be separated from the fluid medium, the dry solids are collected and discharged to the outside and the fluid medium is the next fluid medium storage / transfer means Collecting means for transporting to the air; Recovering and storing the separated fluid medium through the collecting means, receiving the dry matter and attaching it to the fluid medium, and allowing the fluid to which the dry matter is attached to the drying means by preheating air to circulate the fluid medium. It consists of a fluid medium storage / transfer means to be a basic feature of the technical configuration.

Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to the drawings.

1 is an overall configuration diagram schematically showing a liquid drying apparatus using a fluid medium according to the present invention, Figure 2 is an excerpt of the detail shown to explain the principle of circulation and separation of the liquid drying apparatus using a fluid medium according to the present invention Figure 3 is a cross-sectional view showing a part "AA" of Figure 2 of the liquid drying apparatus using the liquid medium according to the present invention, Figure 4 is a fluidized medium and a dry solid of the liquid drying apparatus using a liquid medium according to the present invention Figure 5 is a detailed view showing the separation principle, Figure 5 is a detailed view showing the drying principle of the liquid drying apparatus using a fluid medium according to the present invention.

As shown in Figure 1, the liquid drying apparatus using a fluid medium according to the present invention is to transfer the fluid medium and the dry items, but the drying of the dry material during the transfer process through the drying heat by preheating air and the drying heat by steam Drying means 110 to be made; It is connected to the lower portion of the drying means 110, the dry solids produced by the drying means 110 to be separated from the fluid medium, the dry solids are collected and discharged to the outside and the fluid medium is the following Collecting means (120) for conveying to the fluid storage / transporting means (130); Recovering and storing the separated fluid medium through the collecting means 120 and receiving the dry matter to be attached to the fluid medium, the flow medium attached to the dry matter flows into the drying means 110 by preheating air. A fluid medium storage / transporting means 130 for circulating the fluid medium; Connected to the drying means 110 consists of the filter dust collecting means 140 for collecting and discharging the solids of the fine powder generated during drying or filtering the dry exhaust gas.

More specifically, a liquid drying apparatus using a fluid medium according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5.

The drying means 110 of the liquid drying apparatus according to the present invention includes a drying chamber 111 for recovering the dry solid and the fluid medium 160 and removing the residual moisture of the dry solid; A steam jacket 112 installed outside the drying chamber 111 to supply drying heat by steam; It is installed in the form of a coil inside the steam jacket 112, and receives the fluid medium 160 and the dry matter from the fluid storage / transport means 130 to flow into the upper side of the drying chamber 111, but the dry matter A heat pipe 113 to be dried; It is installed on the inside of the drying chamber 111 and consists of a fluid medium 160, a cyclone separation device 114 for separating the dry solids and dry exhaust gas generated during drying.

Here, the drying chamber 111 is an inner surface is formed of a heat transfer surface and has a cyclone structure, the fluid medium 160 is a circular ball (ball), but preferably composed of a rigid medium.

The steam supply pipe 115 is connected to the upper side of the outer surface of the steam jacket 112, and the steam discharge pipe 116 is connected to the lower side of the steam jacket 112.

The heat exchanger tube 113 is disposed to surround the periphery of the drying chamber 111, and one end thereof is positioned above the inside of the drying chamber 111, and the other end thereof is connected to the circulation tube 136.

A discharge pipe 117 is formed on the outer surface of the cyclone separator 114 is connected to the bag filter 141 of the filter dust collecting unit 140.

The collecting means 120 of the liquid drying apparatus according to the present invention forms an open connection with the lower end of the drying chamber 111 and the collecting chamber 121 for temporarily storing the dry solid descending through the drying chamber 111; A screen 122 installed above the collection chamber 121 and separating the dry solid and the fluid medium 160 descending into the collection chamber 121; A compressed air induction pipe 123 installed vertically across the drying chamber 111 and the cyclone separator 114 to guide air for cleaning the screen 122 from the outside; It is installed at the lower end of the compressed air induction pipe 123 to be located on the upper side of the screen 122 to disperse the dry solids and the fluid medium 160, the reverse flow of the dry solids stored in the lower portion of the collection chamber 121 A distributor 124 for preventing the; An induction pipe (125) for guiding the separated fluid medium (160) through the screen (122) to the fluid storage / transport means (130); Is connected to the lower end of the collecting chamber 121 is composed of a rotary feeder 126 to discharge the dry solids stored in the collecting chamber 121.

Here, the screen 122 is formed to be inclined, one end of the induction pipe 125 is connected to the center of the screen 122 and the other end of the fluid medium storage tank 131 of the fluid medium storage / transfer means 130 Leads to.

An air supply pipe 171 is connected to an upper end of the compressed air induction pipe 123, and the air supply pipe 171 is branched and connected to the bag filter 141 of the filter bag 140.

The fluid medium storage / transport means 130 of the liquid drying apparatus according to the present invention is connected to the induction pipe 125 to store the fluid medium 160 separated through the screen 122, the dry matter storage tank ( A fluid medium storage tank 131 connected to the object supply pipe 151 of 150 to be mixed and adhered to the fluid medium 160 stored therein to receive the liquid product; Control handles (132a) and control valves (132b) which are located inside and outside of the fluid medium storage tank (131) and are connected to each other and adjust a supply amount for transporting the fluid medium (160) and the dry matter; A rotary feeder 133 connected to a lower end of the fluid medium storage tank 131 to discharge the fluid medium 160 and the dried object of a regulated supply amount; An air preheater 134 for preheating and supplying drying air at a high temperature for conveyance of the fluid medium 160 and drying of the dried object; An injector (135) for mixing the preheated air through the air preheater (134) and the fluid medium (160) to which the dry matter discharged through the rotary feeder (133) is attached; The circulation pipe 136 is connected to the injector 135 and the heat transfer pipe 113, and guides the mixed medium preheated air and the fluid to which the dry matter is attached to the heat transfer pipe 113.

Here, a blower 137 is installed to receive the drying air at room temperature to be supplied to the air preheater 134, and the diameter of the preheat supply pipe 138 connecting the air preheater 134 and the injector 135 is reduced. Install the reducer 139 to increase the discharge pressure of the preheated air.

The filter dust collecting unit 140 of the liquid drying apparatus according to the present invention is connected to the discharge pipe 117 of the drying means 110 and a bag filter 141 for filtering the solids and dry exhaust gas of the fine powder generated during drying; A rotary feeder 142 connected to the lower end of the bag filter 141 to discharge only the solid matter of the fine powder; A collecting container 143 for collecting the solids of the fine powder discharged through the rotary feeder 142; It is connected to the bag filter 141, it is composed of a draw fan 144 to guide the dry exhaust gas filtered from the bag filter 141 to be discharged to the outside.

Referring to the operation sequence and operation of the liquid drying apparatus using a fluid medium according to the present invention made as described above are as follows.

When the fluid medium 160 is stored in the fluid medium storage tank 131, the liquid dry matter flows from the object storage tank 150 through the object supply pipe 151 to be attached to and mixed with the fluid medium 160. Then, it is supplied to the injector 135 through the rotary feeder 133. At this time, the flow medium 160 and the dry matter supplied to the injector 135 are controlled to circulate the supply amount by adjusting the control valve 132b through the operation of the control handle (132a).

In addition, the injector 135 is mixed with high-temperature preheating air for conveying the fluid medium 160 and drying the dried object. The drying air is supplied to the air preheater 134 by the blower 137 and the air is Heated to a high temperature through a preheater 134 and is supplied to the injector 135 through a preheat supply pipe 138. At this time, the preheating air is supplied at a high speed by the reduser 139 connected to the preheating supply pipe 138.

The fluid medium 160 and the dried material and the preheated air mixed in the injector 135 are transferred to the lower portion of the heat transfer pipe 113 along the circulation pipe 136 by the high pressure of the preheated air and continuously spirally transfer the heat transfer pipe 113. Is transferred to the top of the tray, and drying is performed during the transfer process. In this case, as shown in FIG. 5, the dry matter attached to the fluid medium 160 is primarily dried by high temperature preheating air, ie, direct drying heat, which is transferred together in the heat transfer tube 113, as well as a steam supply pipe. The steam heat supplied to the steam jacket 112 through the 115 is applied to the outside of the heat pipe 113 so that indirect dry heat is supplied into the heat pipe 113 so that the dry matter passing through the heat pipe 113 is 2 Primary drying takes place. In addition, the fluid medium 160 is a high-speed flow in the heat pipe 113, the medium is hard to remove the solids fixed to the inner wall of the heat pipe 113 to act to flow into the drying chamber 111 so that the solids. It is possible to prevent the blockage of the heat transfer pipe 113 due to the fixing, as well as to maintain a high heat transfer efficiency.

The dry solid and dry exhaust of the fluid medium 160 passing through the heat transfer tube 113 and the dry heat generated by the drying heat flow into the upper side of the drying chamber 111. At this time, the fluid medium 160 and the dry solids and the dry exhaust gas introduced into the drying chamber 111 are separated by the cyclone separator 114 so that the fluid medium 160 and the dry solids are lowered and the fines and the dry matter are dried. The exhaust gas is filtered by the bag filter 141 along the discharge pipe 117. The solids of the fine powder passing through the bag filter 141 are collected in the collecting container 143 through the rotary feeder 142 and discharged to the outside, and the dry exhaust gas is guided by the induced blower 144 and discharged to the outside.

The dry solid descending to the lower portion of the drying chamber 111 is removed while remaining in the drying chamber 111 and is lowered to the collecting chamber 141 together with the fluid medium 160. At this time, the drying chamber 111 is because the inner surface is formed of the heat transfer surface it is possible to remove the residual moisture through heat dissipation, thereby minimizing the water content. However, the heat transfer surface provides a cause for fixing the dry solids to the inner surface of the drying chamber 111. Since the drying chamber 111 is a cyclone structure, as shown in FIGS. 2 and 3, the fluid medium 160 is caused by turbulent flow. It takes a spirally descending form and is sufficiently removed. Since the fluid medium 160 is repeatedly circulated, the continuous removal operation is performed.

The fluid medium 160 and the dry solid descending from the drying chamber 111 to the collecting chamber 121 are sprayed and supplied to the screen 122 by the distributor 124. The fluid medium 160 is shown in FIG. Is not passed through the screen 122 but flows toward the induction pipe 125 connected to the center thereof, flows into the fluid storage tank 131 and is stored therein, and the dry solid passes through the screen 122 to the lower portion of the collecting chamber 121. After being temporarily stored, it is discharged to the outside through the rotary feeder 126. At this time, the compressed air induction pipe 123 is compressed by receiving air from the air supply pipe 161 and then compressed air is intermittently sprayed on the screen 122 to clean the screen 122, the screen by the dry solid Clogging of the 122 is prevented.

On the other hand, when the fluid medium 160 is stored in the fluid medium storage tank 131 again, a continuous circulation is performed by the same operation procedure and action as described above, and the drying of the dry item using the fluid medium 160 is repeated.

As described above, according to the liquid drying apparatus using the fluidized medium according to the present invention, since it is a combination type for performing the liquid drying function by the spray drying device and the solid state drying function by the airflow drying device, the granular solids contain a large amount of granular solids. It is a liquid or high viscosity, which enables easy drying of the difficult to dry matter, and has a useful effect that can be applied regardless of the properties of the dry matter.

After attaching the dry matter in the form of a thin film on the outer surface of the fluid medium, the dry matter is dried quickly by direct drying heat by preheating air and indirect dry heat by steam. Has the effect of improving.

It is possible to minimize the moisture content of the dry matter by continuously drying the dry matter through the heat transfer pipe and the drying chamber, and to maintain the heat transfer efficiency by removing the solid matter of the dry matter fixed in the device by the continuous circulation of the fluid. Will be effective.

Claims (5)

A drying means (110) for transferring the fluid medium (160) and the dried object to dry the dried material during the transfer process through a drying heat by preheating air and a drying heat by steam; It is connected to the lower portion of the drying means 110, the dry solids produced by the drying means 110 to be separated from the fluid medium 160, the dry solids are collected and discharged to the outside and the fluid medium 160, collecting means 120 to be transferred to the next fluid storage / transport means 130; Recovering and storing the separated fluid medium 160 through the collecting means 120 and receiving the dry items to be attached to the fluid medium 160, the fluid medium 160 is attached to the preheated air Liquid flow drying apparatus using a fluid medium, characterized in that the flow medium storage / transfer means 130 to be introduced into the drying means 110 to circulate the fluid medium 160. The method of claim 1, A bag filter 141 connected to the drying means 110 and filtering solids and dry exhaust gas of the fine powder generated during drying; A rotary feeder 142 connected to the lower end of the bag filter 141 to discharge only the solid matter of the fine powder; A collecting container 143 for collecting the solids of the fine powder discharged through the rotary feeder 142; It is connected to the bag filter 141 is further comprises a filter collecting means 140 consisting of a guide blower 144 to guide the dry exhaust gas filtered from the bag filter 141 is discharged to the outside. Liquid drying apparatus using a fluid medium. The method of claim 1, The drying means 110 includes a drying chamber 111 for recovering the dry solid and the fluid medium 160 and removing the residual moisture of the dry solid; A steam jacket 112 installed outside the drying chamber 111 to supply drying heat by steam; It is installed in the form of a coil inside the steam jacket 112, and receives the flow medium 160 and the dry matter from the flow medium storage / transfer means 130 to be introduced into the interior of the drying chamber 111, the dry matter A heat pipe 113 to be dried; The liquid phase using a fluid medium, which is installed on the inside of the drying chamber 111 and comprises a cyclone separator 114 for separating the fluid medium 160 and the dry solids and dry exhaust gas generated during drying Drying equipment. The method of claim 1, The collecting means 120 forms an open connection with the lower end of the drying chamber 111 and the collecting chamber 121 for temporarily storing the dry solid descending through the drying chamber 111; A screen 122 installed above the collection chamber 121 and separating the dry solid and the fluid medium 160 descending into the collection chamber 121; A compressed air induction pipe 123 installed vertically across the drying chamber 111 and the cyclone separator 114 to guide air for cleaning the screen 122 from the outside; It is installed at the lower end of the compressed air induction pipe 123 to be located on the upper side of the screen 122 to disperse the dry solids and the fluid medium 160, the reverse flow of the dry solids stored in the lower portion of the collection chamber 121 A distributor 124 for preventing the; An induction pipe (125) for guiding the separated fluid medium (160) through the screen (122) to the fluid storage / transport means (130); Is connected to the lower end of the collecting chamber 121 is a liquid drying apparatus using a fluid medium, characterized in that it comprises a rotary feeder (126) for discharging dry solids stored in the collecting chamber 121. The method of claim 1, The fluid storage / transport means 130 is connected to the induction pipe 125 and the dry storage tank 150 to store the separated fluid medium 160 and is supplied with the liquid to dry the fluid medium 160. Fluid medium storage tank 131 to be mixed and attached to the; Control handles (132a) and control valves (132b) which are located inside and outside of the fluid medium storage tank (131) and are connected to each other, and regulate a supply amount for circulation of the fluid medium (160) and the dry matter; A rotary feeder 133 connected to a lower end of the fluid storage tank 131 to discharge the controlled supply of the fluid medium 160 and the dried object; An air preheater 134 for preheating and supplying drying air to circulate the fluid medium 160 and to dry the dried object; An injector 135 for mixing the preheated air through the air preheater 134 and the fluid medium 160 to which the dry matter discharged through the rotary feeder 133 is attached; It is connected to the injector 135 and the heat transfer pipe 113, characterized in that it comprises a circulating pipe 136 to guide the mixed medium preheated air and the dry matter attached to the heat transfer pipe 113 Liquid drying apparatus using a fluid medium.