JPH0552524U - Batch type fluidized bed furnace treatment material charging / extracting device - Google Patents

Abstract

(57) [Summary] [Purpose] When charging the processing material 5 into the fluidized bed furnace, the opening time of the fluidized tank 10 is shortened and vaporized gas is prevented from being generated. In a batch type fluidized bed furnace having a fixed lid 16 for opening and closing the upper opening 11 of the fluidized tank 10, a traveling rail 42 having a traveling carriage 43 is arranged above the furnace,
A hanging member that holds the processing material support member 45 so that it can be lifted up and down on the traveling carriage 43, and that can extend and contract a lid 46 and a processing material support base 48 that are provided above the processing material support member 45. Connected at 47.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a treatment material charging / extracting apparatus for a batch type fluidized bed furnace.

[0002]

[Prior Art]

 Conventionally, as a heat treatment device for processing materials such as steel parts, or as a heat removal device for organic substances attached to coating jigs, etc. Type fluidized bed furnaces are known. In this fluidized bed furnace, when the processing material is charged, the fixed lid is opened, the processing material is completely charged into the fluidized bed in the fluidized state, and then the fixed lid is closed. On the other hand, at the time of extracting the treatment material, the fixed lid is opened, the treatment material is extracted from the fluidized bed in a fluidized state, and then the upper opening is closed by the fixed lid.

[0003]

[Problems to be solved by the device]

 As described above, in the conventional batch type fluidized bed furnace described above, the lid is opened in the fluidized state when the treatment material is charged into the fluidized bed, so that the heat radiation and the scattering of the fluidized particles increase. At the same time, if there is a non-fluid part inside the fluidized bed, it becomes difficult to charge the treatment material. Further, when the adhered organic matter is removed by heating, the emission of flammable fumes increases, the working environment deteriorates, and there is a problem of ignition of flammable fumes.

[0004]

[Means for Solving the Problems]

 The present invention has been made to solve the above problems, and a batch type fluidized bed furnace equipped with a fixed lid for opening and closing the upper opening of a fluidized tank has a traveling carriage above the furnace. A suspension member having rails arranged to suspend and hold the processing material support member on the traveling carriage so that the processing material support member can be moved up and down, and to extend and retract the lid provided on the processing material support member and the processing material support base. Are linked together.

[0005]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows a fluidized bed heating and washing apparatus. The fluidized bed type heating and cleaning apparatus 1 is roughly composed of a furnace main body 2 in which a heat insulating material is installed, a cargo receiving table 3 and a treatment material charging / extracting apparatus 4 according to the present invention.

A flow tank 10 and a cleaning tank 20 are arranged in the furnace body 2. The fluidized tank 10 is provided with an opening 11 with its upper part opened, and a fluidized bed 13 is formed by filling fluidized particles 12 such as alumina and sand. The surface of the fluidized bed 13 is at a level where a space 14 having a predetermined depth is formed on the surface thereof, that is, a level at which a space capable of accommodating a treatment material is formed. Further, a gas dispersion device 15 is arranged at the bottom of the fluidized tank 10 so that a fluidizing gas supplied from a blower (not shown) is jetted to fluidize the fluidized particles 12. Further, the upper opening 11 is opened and closed by a fixed lid 16 rotatably provided on the furnace body 2. A nozzle 21 is provided at the bottom of the cleaning tank 20, and hot water 22 supplied from the nozzle 21 circulates in the cleaning tank 20. The flow tank 10 and the cleaning tank 20 are heated by a heater (not shown) or exhaust gas from an incinerator that burns and incinerates the organic gas generated in the flow tank.

The processing material charging / extracting device 4 includes a pedestal 41 and a traveling rail 42 arranged above the flow tank 10, the cleaning tank 20 and the cargo receiving table 3, and a traveling carriage that moves along the traveling rail 42. 43, an elevator 44 provided on the traveling carriage 43, and a processing material support member 45 suspended by the elevator 44 so that the processing material support member 45 can be lifted up and down. A lid 46 having a heat insulating material lined therein is provided, and below the lid 46, a treatment material support base 48 is suspended and held via a suspending member 47 made of a chain.

The operation of the fluidized bed heating and cleaning apparatus 1 will be described. Now, the opening 11 of the flow tank 10 is closed by the fixed lid 16, the flow tank 10 is heated by a heater or the like not shown, and the flow gas supplied from the blower not shown is supplied from the gas dispersion device 15 to the gas dispersion device 15. It is assumed that the fluidized particles 12 in the fluidized bed 13 are jetted and are flowing. From this state, first, the elevator 44 is driven to load the processing material 5 on the support base 48 of the processing material support member 45 by the load receiving table 3, and then the processing material support member 45 is lifted to move the traveling carriage 43. The processing material 5 is moved to a position above the flow tank 10. Next, the supply of the flowing gas to the flow tank 10 is shut off to stop the flow of the fluid particles 12, and the fixed lid 16 of the furnace body 2 is rotated in the direction of the arrow a ′ to open the upper opening of the flow tank 10. The part 11 is opened. Then, the treatment material support base 48 is placed on the surface of the stationary fluidized bed 13, and the descending operation of the elevator 44 is continued even after the treatment material support base 48 is placed to suspend the suspension member (chain). While loosening 46, the upper opening 11 of the flow tank 10 is closed by the lid 45.

As described above, the treatment material support base 48 on which the treatment material 5 is loaded is placed on the fluidized bed 13 in a non-fluid state, and the treatment material 5 and the fluidized particles 12 are kept until the upper opening 11 is closed by the lid 46. Since they are held in a non-contact state with each other, naturally, no vaporized gas is generated due to the contact between the processing material 5 and the fluidized particles 12. Moreover, since the air in the upper space 14 can be purged with a low oxygen gas such as steam before flowing in the fluidized bed 13 and the air staying in this space 14 can be exhausted, the risk of fire is further reduced. ..

Then, the supply of the fluidizing gas to the gas dispersion device 15 is restarted, the fluidized particles 12 are fluidized, and the processing material 5 is charged into the fluidized bed 13. As a result, the treatment material 5 is heated using the fluidized particles 12 as a heating medium, and the organic matter attached to the surface of the treatment material 5 is thermally decomposed or vaporized by contact with the fluidized particles 12. The exhaust gas containing the organic gas is incinerated by an incinerator (not shown) after separating and removing the fluidized particles 12 contained in the exhaust gas by a cyclone from an exhaust port (not shown).

After a lapse of a predetermined time, the elevating device 44 is driven to lift the processing material support member 45 to open the opening 11, and the processing material 5 is extracted from the fluidized bed 13. Further, the fixed lid 16 is rotated in the direction of the arrow a, and the fixed lid 16 closes the upper opening 11 of the flow tank 13.

After that, the traveling carriage 43 is moved to above the cleaning tank 20, and the lifting device 44 is driven to immerse the heat-treated processing material 5 in the warm water 22 of the cleaning tank 20. As a result, the residue and fluidized particles attached to the surface of the treatment material 5 are removed. Then, the processing material is pulled up from the hot water 22, conveyed to the cargo receiving table 3 and loaded and unloaded, a new processing material 5 is loaded on the support member 45, and the above processing is executed.

Although a chain is used as the suspending member 47 in the above-described embodiment, the suspending member 47 is not limited to the chain and may be used when the processing material 5 is loaded into the flow tank 10. It is sufficient that the lid 45 can be lowered while the treatment material 5 is installed on the surface of the fluidized bed 13.

[0014]

[Effect of the device]

 As is clear from the above description, in the treatment material charging / extracting device according to the present invention, the lid of the treatment material support member and the treatment material support base are connected by the elastic suspending member. The upper opening is closed with a lid prior to charging the treatment tank with the treatment material. Further, according to the present invention, it is possible to place the treatment material on the surface of the stationary fluidized bed, close the opening, and then cause the fluidized bed to flow.

Therefore, the amount of heat radiation is small, and energy can be saved. Moreover, since there is no scattering of fluidized particles, it is possible to maintain a good working environment, and it is also possible to prevent a fire from occurring due to the scattering of vaporized gas.

[Brief description of drawings]

FIG. 1 is a view showing a schematic configuration of a batch type fluidized bed furnace equipped with a treatment material charging / extracting device according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Fluidized bed type heating and cleaning apparatus, 2 ... Furnace main body, 4 ... Treatment material charging / extracting apparatus, 5 ... Treatment material, 10 ... Fluid tank, 11 ... Opening portion, 12 ... Fluidized particles, 13 ... Fluidized bed, 16 … Fixed lid,
20 ... Cleaning tank, 41 ... Stand, 42 ... Traveling rail, 43 ...
Traveling vehicle, 44 ... Elevator, 45 ... Processing material support member, 46
... Movable lid, 47 ... Hanging member (chain), 48 ...
Processing material support base.

Claims (1)

[Scope of utility model registration request] 1. In a batch type fluidized bed furnace having a fixed lid for opening and closing an upper opening of a fluidized tank, a traveling rail having a traveling carriage is arranged above the furnace, and the traveling carriage is provided with:
A batch type in which a processing material support member is hung and held so that it can be moved up and down, and a lid provided on the upper part of the processing material support member and a processing material support base are connected by a stretchable suspension member. Fluidized bed furnace treatment material charging / extracting device.