JPS5834744B2 - Required information - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for attaching a substance to be dried, such as organic sludge, which has fluidity due to its sticky and wet state in a thin film form to a conveying carrier such as a sphere, and then applying a heating gas to the drying material. The present invention relates to an apparatus for drying a fluid substance, which is configured to evaporate and dry the substance by bringing it into contact with a carrier, and then recover the substance by peeling it off from a transport carrier.

In this type of drying equipment, which performs drying by attaching the substance to be dried to the surface of a transport carrier, the substance to be dried is made into a thin film, increasing its substantial surface area, and making it possible to perform extremely efficient drying. As shown in Japanese Patent Publication No. 47-27281, a conventional drying processing apparatus, for example, as shown in Japanese Patent Publication No. 47-27281, is capable of circulating a large number of carriers from above to below with respect to a drying chamber. A sticky and wet substance to be dried is adhered to the surface of the carrier group in a thin film form, and after being dried by contact with a heating gas generated in the drying chamber, the substance to be dried is peeled off from the transport carrier. It was configured as expected.

However, in this case, for various reasons such as simplifying the transportation of the carrier and improving the contact between the heated drying gas and the material to be dried in the drying chamber with a limited volume, it is difficult to fill the carrier in the drying chamber. The transport carrier was taken out from below in order and allowed to descend naturally.

The group of conveyance carriers mutually descends in a close state, and as the moisture content of the substance to be dried adhering to the surface of the conveyance carrier decreases, it becomes highly viscous, so that the conveyance during natural descent is prevented. The carriers tend to adhere to each other, causing a phenomenon of grain formation due to the carrier carriers inside the drying chamber. As a result, problems such as clogging occur during the transfer of the carrier carriers into the drying chamber.

This inconvenience is caused by the fact that the surfaces of the transport carriers are highly viscous and that the transport carriers that are in close contact with each other move relative to each other.

The first technical problem to be solved by the present invention is that when transport carriers with a substance to be dried attached to their surfaces are sent to a peeling device after drying, there is a state in which there is little mutual movement between the individual transport carriers. However, by sequentially transferring the transport carrier as a whole to the peeling device side and drying it in the process, troubles such as the above-mentioned tanning phenomenon can be avoided, and furthermore,
The second technical problem is to suppress the highly fluid substance 11 to be dried, which is attached to the surface of the transport carrier, from hanging down and adhering to the transfer surface of the transfer device during the drying process.

The technical means of the first invention taken to solve the first problem described above consists of a device for attaching a sticky moist substance to be dried in the form of a thin film to the surface of a large number of transport carriers; an endless conveyor having conveying protrusions planted at appropriate intervals so as to divide the group of conveying carriers into appropriate amounts and transfer them; a peeling device for peeling the substance to be dried from the group of conveying carriers; , a device for returning the group of conveying carriers after peeling to the adhesion device; further, a device for forcibly blowing heated drying gas onto the group of conveying carriers during the loading and transferring path of the endless conveyor; This is because we have established the following.

The effects of taking the above technical measures are as follows.

That is, by using a large number of carriers and attaching the substance to be dried in a thin film to the surface thereof, the contact surface area of the substance to be dried with the heated gas is substantially increased.
While taking advantage of the unique advantages of using transport carriers as a drying processing means, mutual movement of transport carriers is possible, such as taking out the transport carriers one after another from the bottom of the container when the transport carriers are filled in one container. Rather than transporting the transport carriers by means of transport, an endless conveyor is used to place and transport the transport carriers in appropriate amounts, and a device is used to spray heated drying gas, thereby controlling the mutual movement of the individual transport carriers. The entire carrier is smoothly transferred to the peeling device and dried in the process. This ensures that even though the surface is highly viscous, there is no risk of adhesion between the carriers during the drying process. It is possible to suppress the tanning phenomenon, and therefore, the recovery and drying process of the carrier group can be smoothly carried out.
Reliable transport and reliable separation of the substance to be dried and the transport carrier are maintained, and it has become possible to carry out the drying process of fluid substances with high overall efficiency.

Moreover, if the drying process is performed while transferring the substance to be dried that has adhered to the conveyance carrier while it is placed on the endless conveyor, it is possible to perform the drying process when a large amount of the conveyance carrier is filled in one container. In comparison, the flow path resistance for the heated drying gas that passes through the gaps between each transport carrier as a flow path is relatively small because it is only necessary to pass the heated gas through a relatively small amount of transport carriers. This method is also advantageous in that it avoids increasing the size of the entire device, which would require using heated drying gas under high pressure conditions.

In addition, the technical means of the second invention taken to solve the second technical problem are, in addition to the above technical means,
The device for blowing the heated drying gas onto the transport carrier group has been improved so that it is forcibly blown up from below, and this technical means provides the following effects.

In other words, even if some of the materials to be dried adhering to the surface of the transport carrier, which have a relatively high degree of moisture, tend to sag, the drying gas blows up from below.
By pushing this up above the circumferential surface of the transport carrier and repeating this process, the fluid substance to be dried is disturbed on the surface of the carrier, thereby increasing the contact efficiency between the drying gas and the substance to be dried. It is possible to prevent the substance to be dried attached to the transport carrier from hanging down and adhering to the surface of the endless conveyor.

Therefore, even during continuous work over a long period of time, the flow of the drying gas to the material to be dried through the conveyor surface can be maintained in a smooth state, and as a whole, the work of processing fluid materials to be dried can be carried out more efficiently. It has come to this.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 1 shows a schematic side view of a drying treatment apparatus A for fluid substances according to the present invention. This is a device for attaching a fluid substance to be dried in a wet state in the form of a thin film, and includes a container 7 for immersing a group of the transport carriers in the material to be dried, and a container 7 for immersing the transport carrier 1 in a wet state into the material to be dried. It consists of a rotary blade 8 that is ejected.

Reference numeral 3 designates an endless conveyor for mounting and transporting the group of transport carriers to which the substances to be dried that have been scraped out by the rotary blades 8 of the adhesion device 20 are attached, and the mesh-shaped transport protrusions 3a are connected to the conveyor. Endless strips 3A are planted at appropriate intervals in the rotating direction and are hung from wheels 3B, 3B.

Reference numeral 4 denotes a peeling device that is located at the end of the conveyance of the endless conveyor 3 and peels off the substance to be dried from the first group of conveyance carriers, and is located at the lower end in the conveyance direction of the first group of conveyance carriers to which the substance to be dried is attached. A mesh-like cylindrical body 4A that rotates around an imaginary axis 8 whose sides are inclined downward, and a collection container 4B that collects powdery substances to be dried that have leaked from this cylindrical body 4A after the drying process. It consists of

Reference numeral 5 denotes a device for returning a group of peeled carriers falling under their own weight along the inside of the cylindrical body 4A of the peeling device 40 to the adhesion device 2, and is provided on the lower side of the endless conveyor 3. A belt conveyor 55A and a group of conveyance carriers loaded and conveyed by this belt conveyor 5A are transferred to a container 7 of the adhesion device 2.
It consists of a screw conveyor 5B that transports the

Further, a device 6 for forcibly spraying drying gas from above onto the group of conveying carriers is installed in the loading and transferring path of the endless conveyor 3, and this drying gas spraying is carried out by the device. For example, a plurality of supply pipes 9 are provided for blowing high-temperature gas from a hot-air generating furnace or high-temperature factory waste gas as heating and drying gas onto a group of transport carriers.

10 is a supply pipe that supplies the substance to be dried into the container 7.

Then, while the group of transport carriers that have passed through the adhesion device 2 are placed and transported in a stationary or substantially stationary state on an endless conveyor 3, a drying gas is blown by the drying gas blowing device 6. The substance to be dried attached to the transport carrier 1 comes into contact with the substance to be dried, and the substance to be dried is evaporated to dryness.

At this time, since the group of conveyance carriers is placed and conveyed in a stationary or substantially stationary state by the endless conveyor 3, the phenomenon of tanning in this drying process is suppressed.

FIG. 2 shows an embodiment of the second invention, in which the drying gas is blown by the device 6 so as to blow the gas from below toward the group of transport carriers, and the endless conveyor 3
A radiant heating device 11 that heats the group of transport carriers is provided above the loading and transporting path.

Further, as the transport carrier 1, for example, Teflon, polyethylene (this polyethylene has poor heat resistance, so B
The wire is exposed to 30 M rad.

) Spheres made of silicone-coated aluminum material are common, but various other materials or shapes can be used.

Further, if the transport carrier is made of a material having a large coefficient of thermal expansion, it is convenient because the substance to be dried and the transport carrier 1 can be easily and reliably separated from each other as the material is cooled after drying.

[Brief explanation of the drawing]

The drawings show an embodiment of the drying processing apparatus for fluid substances according to the present invention, and FIG. 1 is a schematic side view showing the structure of the present pile-invention;
FIG. 2 is a schematic side view showing the configuration of the second invention. 1...Transportation carrier, 2...Adhesion device, 3
...Endless conveyor, 4...Peeling device,
5... Return device, 6... Spraying device.

Claims (1)

[Scope of Claims] 1. A device 2 for attaching a sticky moist substance to be dried in the form of a thin film to the surface of a group of a large number of conveyance carriers, and a device 2 for attaching a sticky wet substance to be dried in the form of a thin film to the surface of a group of a large number of conveyance carriers, and a device 2 for attaching the group of conveyance carriers to which the substance to be dried is attached in appropriate amounts. An endless conveyor 3 is provided with conveying protrusions 3a at appropriate intervals so that the material to be dried is placed and transferred on the conveying carrier 1.
It is equipped with a peeling device 4 for peeling the group 1 and a device 5 for returning the peeled carrier group 1 to the adhesion device 2. An apparatus for drying a fluid substance, characterized in that it is equipped with a device 6 for forcibly blowing heated drying gas onto the group. 2. A device 2 for attaching a sticky wet substance to be dried in the form of a thin film to the surface of a group of a large number of transport carriers, and a device 2 for dividing the group of transport carriers to which dried substances have been attached into appropriate amounts and placing and transporting them. An endless conveyor 3 is provided with conveying protrusions 3a at appropriate intervals, and the material to be dried is transferred to the conveying carrier 1.
It is equipped with a peeling device 4 for peeling the group 1 and a device 5 for returning the peeled carrier group 1 to the adhesion device 2. An apparatus for drying a fluid substance, characterized in that a device 6 for forcibly blowing up a heated drying gas from below is provided in the group.