JPS60220142A - Furnace floor structure of continuous activated carbon regeneration furnace - Google Patents

Abstract

PURPOSE:To make it possible to effectively regenerate activated carbon, by providing a large number of furnace floor blocks each having a discharge electrode in a state connected in series to constitute a regeneration furnace and separately controlling the discharge current of the electrode of each block. CONSTITUTION:A large number of furnace floor blocks B are fixed to a base plate 15 right and left side edge parts and a machine frame upper surface plate 13 in series through bolts 30 and mutually connected by connection bolts 31 to integrally from a regeneration furnace A. A bordering frame 32 is provided to the peripheral edge of the opening part provided to the upper surface of the regeneration furnace A and the opening part provided to the upper surface of the frame 32 is closed in a freely openable and calosable state by an opening and closing lid 33 and temp. sensors 35 are arranged to the rising parts 34 formed to the right and left side surfaces of the frame 32 at every furnace floor block B. Activated carbon, of which the adsorbing capacity was lowered, is flowed toward the discharge port 2 in the regeneration furnace A under stirring and, during this period, regenerared and activated by spark discharge voltage applied to right and left conductive electrodes 4, 4' from a power source part 28.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hearth structure for a continuous activated carbon regeneration device using spark discharge.

In an activated carbon regeneration furnace, which continuously regenerates activated carbon whose adsorption power has decreased by spark discharge, there is a significant temperature difference between the activated carbon inlet and the outlet with an open door, and damage to the hearth is concentrated near the outlet. However, in conventional regeneration furnaces, the hearth was integrally constructed throughout the furnace, so even if only the area around the hearth outlet was damaged, the entire hearth would have to be replaced, which was uneconomical. , the replacement work was also a large-scale work, which had the disadvantage of increasing work time and work volume.Also, since the spark discharge was performed by a pair of electrodes, it was difficult to control the temperature distribution in each part of the furnace to suit the progress of the regeneration process. I couldn't.

In this invention, a regeneration furnace is constructed by connecting a large number of blocks having a hearth and discharge electrodes in series, and the hearth can be partially replaced by controlling the group m current of the electrodes of each block individually. A continuous activated carbon regeneration device using spark discharge that enables efficient activated carbon regeneration in a shuttle-like manner, reducing the replacement work time and amount of work, and changing the temperature distribution in the furnace to suit the regeneration process. The purpose is to provide a hearth structure.

If the embodiment of this invention is described in detail based on the drawings, (A
> indicates an activated carbon regeneration furnace, which is supported in an inclined state with the activated carbon receiving port (1) facing upward and the discharge port (2) facing downward;
The vibration mechanism <3) vibrates the opening door (A), and the opening door <A
) from the receiving port (1) to the discharge port (2).
While flowing in the direction, a discharge voltage is applied to the activated carbon (C) from the left and right discharge electrodes (4), (4), which are arranged facing each other on the inner surfaces of the left and right furnace walls of the open door (A), to generate a spark discharge. The organic matter adsorbed by the activated carbon is removed by the same spark discharge.
It is configured to activate adsorption power.

The regeneration effect of spark discharge is such that when spark discharge is applied to carbon particles, the activated carbon is heated at an ultra-high speed, and the organic matter adsorbed on the activated carbon is carbonized.

As a result, the generation of spark discharge in the particle sphere is significantly increased, the generation of Joule heat is reduced, and the adsorbed substance can be efficiently desorbed.

Furthermore, by applying a rocking motion to the activated carbon particles together with the application of spark discharge, the generation of spark discharge and, therefore, the detachment effect of the adsorbed substance is further promoted.

The activated carbon with reduced adsorption power supplied to the regeneration furnace (△) is dried to a predetermined moisture content using a centrifugal dehydrator, dryer, etc., and then fed in a predetermined amount at a constant rate using a quantitative feeder (5). Now, the activated carbon is supplied to the receiving port (1) of the regeneration furnace (A), and the activated carbon whose adsorption power has been activated in the regeneration furnace (A) is sent from the discharge port (2) to the washing cooling device 6). It is discharged, washed with water and cooled by the same device (6), and then provided for reuse.

The regeneration furnace (A) consists of a vibration mechanism (3) installed on the top of the base (7).
), the activated carbon receiving port <1) is placed upward and the discharge port (
The vibration mechanism (3) is supported in an inclined state with 2) facing downward, and the vibration mechanism (3) is connected to the base (7) and the regeneration furnace (A>lower base frame (8)
The vertical eccentric shafts (9), (9M) interposed between the two are driven by the motor (10), and the eccentric shafts (9), <9) are synchronized by the toothed belt (11). Therefore, regeneration furnace (△)
Each part vibrates in a circular trajectory while maintaining the above-mentioned tilted state, and the vibration causes the activated carbon (C) in the regeneration furnace (A) to stir and flow, and is discharged from the receiving [ ] <1). It is conveyed to the exit (2).

In the figure, (12) indicates a resonant spring, which supports the approximate center of gravity of the regeneration furnace (A) from below and reduces the starting torque and power applied to the motor (10). It is for the purpose of

The regeneration furnace (A>) is composed of a plurality of hearth blocks (B) connected in series in the flow direction of activated carbon (C,), and the blocks (B) have left and right furnaces made of refractory material. !
! (18), (18M and the same reactor wall (18), (18)
'The hearth bottom plate (19) interposed between the lower inner surfaces has a substantially U-shaped cross section, and the spent recycled activated carbon (C) is housed inside the hearth bottom plate (17). In addition, the left and right hearth walls (18), (18)' outer surfaces and the hearth bottom plate (19)
) The outer bottom surface is connected to the left and right side plates (16), (16)' via the left and right insulation materials (20), (20)' and the bottom insulation material (21).
and is supported by a substrate (15).

In addition, the left and right side plates (16), (16)', the left and right furnace walls (18)
), (18) ′ and left and right insulation materials <20>.

(20) = is due to the two fastening bolts (22) in the front and back,
The lower ends of the left and right side plates (16), (16)' are fixed to the machine frame (8) via the top plate (13) attachment part (14) and the board (15). Due to this mounting structure, the hearth bottom plate (19) of the hearth block <8> is formed into a substantially sawtooth shape with two stages, front and rear, when viewed from the top.The two stages, both front and rear, have the same shape. Then, insert the same block (B) into the machine frame (8) approximately in the center of the same stage.
A horizontal part (23) is provided so that it will be in a horizontal state when installed in an inclined state, and a protective plate (24) made of high-grade ceramic made of silicon nitride is installed in the horizontal part (23) with heat-resistant cement interposed therebetween. It is pasted on the same horizontal part (23)
The rear side surface extends upward to form a vertical section (25), and the upper end of the vertical section (25) is connected to the curved front side surface (26) of another horizontal section (23) arranged at the rear. The vertical part (25), the horizontal part (23) and the curved front acrobatics (26) are connected to form the upper side of the hearth bottom (19).

On the left and right side surfaces of the approximately sawtooth-shaped horizontal portion (23), on the left and right hearth walls (18), (18)'' inner surfaces of the approximately U-shaped cross-sectional interior (17) of the hearth block (B). , substantially rectangular left and right discharge electrodes (4).

(4)' are arranged in a facing state, and the same electrodes (4),
(4)' are the left and right furnace walls (18), respectively.

(18)′, left and right conduction bolts (
27), (27)' are connected to the power supply unit (28), and the power supply unit (28) is connected to the left and right electrodes of the hearth block (B) that constitute the regeneration furnace (A). 4) Radiation f to be applied to ′! The IN pressure and current can be controlled individually for each block (B).

In the hearth block (B) configured as described above, a plurality of the blocks (B) are attached to the left and right side edges of the base plate (15) to the machine frame top plate (13) via mounting bolts (30). The blocks are fixed in series, and the same block (B) that is adjacent to the front and rear
are interconnected by connecting bolts (31) to integrally constitute the regeneration furnace (A).

There is a edging frame (32) around the top opening of the regeneration furnace (A).
The upper surface opening of the surrounding frame (32) is closed by an opening/closing lid (33), and the surrounding frame (32) is provided with a
32) Temperature sensors (35) for detecting the internal temperature of the opening door (A) are arranged on the rising parts (34) of the left and right sides for each hearth block (B).
) is a connecting fitting (35) provided at the inner end of the sensor support tube (35)-1, which is inserted through the side wall of the rising portion (34) from the outside.
)-2, and the same sensor (35)
The lower end maintains a predetermined distance from the upper surface of the horizontal part (23) of the hearth block <8), and the flowing active material 1512 (
C) and is installed to be located inside the sensor (3).
5) is connected to the control device (36) of the power supply section (28). In particular, by arranging the sensor (35) on the side of the edging frame (32), which is a fixed part, the sensor (35) is installed on the closing lid (33). This sensor prevents accidents caused by contact with the inner wall of the furnace.

A funnel-shaped activated carbon receiving hole D (1) is provided in the edging frame (32) at the top of the regeneration furnace (△), and the area around the receiving hole (1) is covered by a horizontal cover (37). It's blocked.

Further, a discharge port (2) is provided at the lowest part of the regeneration furnace (A), and a discharge cover having a sieve screen (38) stretched in an inclined state is attached to the discharge port (2). (39) is installed to remove fine powder from the recycled activated carbon discharged from the regeneration furnace (A). (38) The activated carbon is discharged to the outside of the furnace from the fine powder outlet (41) communicating with the lower surface, and since the activated carbon does not contain fine powder, the water consumption of the washing cooling device (6) is reduced.

The embodiment of the present invention is constructed as described above, and the activated carbon whose adsorption power has decreased is supplied from the quantitative feeder (5) to the receiving port (1), and is passed through the regeneration furnace (A) to the discharge port. (2) While flowing while being stirred in the direction, the activated carbon is caused by the spark discharge generated by the spark discharge voltage and current applied from the power supply section (28) to the left and right discharge electrodes (4), <4)'. Adsorbed organic substances are removed and reactivated.

In particular, left and right ri poles (4) for generating spark discharge;
(4) ' are independently controlled by the power supply unit (28) in two pairs for each hearth block (B), and temperature sensors (35) for detecting the temperature inside the furnace are also connected to each hearth block (B). B), it is possible to control the temperature distribution inside the opening door (A) to be suitable for the progress state of the activated carbon regeneration process.

The hearth of a regeneration furnace is worn out by heat during use, but the horizontal part (23) of the hearth block (B), which is the most susceptible to damage, is equipped with a material with excellent heat resistance and thermal shock resistance. A durable silicon nitride ceramic protection plate (24) is attached to extend the life of the hearth block (B).

Furthermore, even if the hearth block (B) has to be replaced due to progressive wear, the hearth block (B) of the entire regeneration furnace (A) will not be worn out uniformly, but only at the highest temperature outlet (2). ) The hearth block (B) near ) is the most susceptible to damage, and since the regeneration furnace (A>) is composed of many hearth blocks (B), only the damaged hearth block (B) All you have to do is replace it, and the replacement work and time will be minimal.

Furthermore, by providing the sieve screen (38) at the discharge port (2), fine powder can be removed without installing a separate sieving device, and the water consumption of the washing and cooling device (6) can be reduced. be.

In addition, by providing a temperature sensor (35) on the side of the border frame (32), the lid (33) can be opened and closed for inspection, etc.
This prevents the sensor (35) from being damaged when it is closed.

According to this invention, by configuring an activated carbon regeneration furnace by arranging a large number of hearth blocks constituted by partial hearths and discharge electrodes in series, the discharge current of each block can be individually controlled. This has the effect of making the temperature distribution in the regeneration furnace suitable for the state of progress of regeneration of activated carbon, and also making it possible to partially replace a damaged hearth.

[Brief explanation of drawings]

FIG. 1 is an overall side view of an activated carbon continuous regeneration furnace having a hearth structure according to the present invention. FIG. 2 is a sectional view taken along line i-I in FIG. ): Regeneration furnace (B): Hearth block (4), (4)': Left and right discharge electrodes (17): Approximately U-shaped cross section Internal Patent applicant: Showa Tekko Co., Ltd. Agent Ken Matsuo - Department

Claims (1)

[Scope of Claims] 1) A regeneration furnace (A) is constructed by connecting a large number of hearth blocks (B) to a front mounting, and the hearth blocks (B) are formed to have a substantially U-shaped cross section, The interior (17) is configured to store used recycled activated carbon, and a pair of left and right discharge electrodes (4) are provided on the left and right sides of the U-shaped interior. (4) A hearth structure of an activated carbon continuous regeneration furnace equipped with .