JPH0140993Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a solid fuel supply port device in a carbonization device used to incinerate waste oil, gas oil, etc. that contain moisture with poor ignitability.

(Prior art) Since it is difficult to directly incinerate waste oil, gum oil, etc. that contain moisture that has poor ignitability, solid fuel such as coke is used as a combustion aid. The hot air obtained by burning the solid fuel is used to carbonize and gasify it and incinerate it, and the heat obtained by the incineration is used as another heat source.

In such a carbonization furnace, it is necessary to gradually replenish the solid fuel into the furnace, but if air enters the furnace while the solid fuel is being supplied, there is a danger that the carbonization gas will instantly burn inside the furnace. There is.

For this reason, a damper is installed in the solid fuel replenishment path to prevent air from entering the furnace during solid fuel replenishment, but conventional dampers only provide sealing by applying seal packing to the circumferential surface of a flat plate. For,
The seal portion exposed to high temperatures is extremely susceptible to damage, and at present it is difficult to obtain a seal that always provides stable sealing.

(Problems to be Solved by the Invention) In view of the current situation, the purpose of the present invention is to obtain a device that can always provide a stable sealing effect.

(Means for Solving the Problems) The present invention provides a carbonization furnace that uses solid fuel as a combustion aid, and a damper that can be opened and closed is provided in the solid fuel supply hopper. The fuel supply hopper is formed to have an arcuate cross-section and is provided with a liquid reservoir filled with a pitch or other non-volatile liquid, the periphery of which is immersed when the passage is closed by a damper, on the fuel supply hopper side.

(Example) In the drawing, 1 indicates a carbonization furnace, 2 a burner that guides and burns the gas generated in the carbonization furnace 1, and 3 a hopper provided therein for supplying coke and other solid fuel to the carbonization furnace 1. , the hopper 3 has a first part 3a which receives the solid fuel supplied from the bucket feeder 5 by dampers 4, 4 in upper and lower stages, a second part 3b between the dampers 4, 4, and a furnace. 1 and a third portion 3c that is continuous with the inside of the damper 4,
4 prevents air from flowing into the carbonization furnace 1 via the hopper 3. More specifically, the second portion 3b formed between the dampers 4, 4
an inlet pipe 6 for introducing combustion gas and other inert gas from the burner 2, and the second portion 3, respectively;
an outlet pipe 7 that guides the gas sealed in b to the burner 2;
and the second portion 3b when the upper damper 4 is opened.
Before supplying solid fuel to the second part 3b, exhaust gas or the like is introduced into the second part 3b to discharge the combustible gas in the part 3b to the burner 2 side. In this state, the upper damper 4 is opened and the second part 3b is Then, after closing the damper 4 again, the lower damper 4 is opened to supply the solid fuel filling the second portion 3b into the furnace 1.

The configuration up to now is not particularly different from what has been generally known.

In the present invention, both dampers 4, 4 are configured to have an arc shape in longitudinal section, and each damper 4, 4 is movable in a fan shape around the shaft 8, and the hopper 3
When each damper 4 is closed, a liquid reservoir 9 filled with pitch or other hardly volatile liquid is provided around the damper 4 to seal the dampers 4, 4 with liquid. In this case, the space between the dampers 4, 4 and the hopper 3 side can be sealed with liquid, and the dampers 4, 4 can be easily opened and closed by simply rotating their shafts 7 using an external handle or the like.

As described above, according to the present invention, in a carbonization furnace that uses solid fuel as a combustion aid, in which a damper that can be opened and closed is provided in the solid fuel supply path, the damper has a circular cross section that swings around the axis. It is formed in an arc shape and is provided with a liquid reservoir filled with a pitch or other non-volatile liquid, the periphery of which is immersed when the passage is closed by the damper, on the side of the fuel supply passage. The area around the damper is sealed with a non-volatile liquid to reliably prevent outside air from entering the furnace, and since it is liquid sealed, the packing surface is not damaged unlike conventional packing. It has the advantage that there is no inconvenience such as deterioration of the sealing effect.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one example of implementing the present invention;
The figure is a cutaway side view of the main part. 1...carbonization furnace, 3...hopper, 4...damper.

Claims (1)

[Scope of utility model registration request] In a carbonization furnace that uses solid fuel as a combustion aid, the solid fuel supply hopper is provided with a damper that can be opened and closed, and the damper is formed to have an arcuate cross section that swings about an axis. A solid fuel supply port device in a carbonization apparatus comprising a liquid reservoir filled with pitch or other hardly volatile liquid, the periphery of which is immersed when the passage is closed with a damper on the hopper side.