JPS5815452Y2 - Granular charcoal continuous dehydrator - Google Patents

Description

[Detailed description of the invention] This invention uses granular activated carbon that adsorbs the substance to be treated and loses its activity.
This relates to a device that continuously dehydrates entrained moisture from bone charcoal (hereinafter referred to as granular charcoal) before supplying it to a regeneration furnace.

When feeding granular coal to a regeneration furnace, it is advantageous for the fuel consumption of the regeneration furnace to be lower if the granulated coal has less moisture, and if the dehydration is insufficient, wet granules will be deposited in the chute from the dehydrator to the regeneration furnace. There is a disadvantage that the charcoal becomes clogged and prevents the supply to the regeneration furnace.

If a certain amount of granular coal is not continuously supplied to the regeneration furnace, not only will the operation management of the regeneration furnace become troublesome, but the life of the regeneration furnace will be shortened by repeatedly shutting down the operation of the regeneration furnace.

Generally, the process of dehydrating granular charcoal involves dehydrating the water existing between the particles and dehydrating the water droplets suspended between the particles.

Dehydration of water present between particles is easily carried out by gravity dehydration, but dehydration of water droplets suspended between particles cannot be done by gravity dehydration alone, and is carried out using centrifugal force, vibration, air flow, etc.

Even if an attempt is made to dehydrate the granular coal transferred as a slurry by directly placing it in a centrifugal dehydrator, vibrating sieve, etc., there is a drawback that the sieve mesh will be clogged by the pulverized coal accompanying the granular coal, so this drawback can be alleviated. To do this, gravity dehydration is performed in advance in a container covered with a wire mesh for draining water, and then placed in a centrifugal dehydrator, vibrating sieve, etc. for further dehydration.

On the other hand, since the sieve mesh becomes clogged, there is a method of dewatering the granular coal while transporting it using an inclined screw conveyor without a sieve mesh, but this method is basically gravity dewatering, and the dewatering efficiency is not good.

In order to continuously dehydrate granular coal, in the conventional case,
A slanted screw conveyor or a large amount of deactivated granular coal is stored in a tank with a dehydration mechanism to dehydrate it, and the dehydrated granular coal is stored in another granular coal storage tank of the same capacity and continuously supplied by a conveyor, etc. However, as mentioned above, the inclined screw conveyor has poor dewatering efficiency, and a large amount of granular coal is dehydrated in a dehydrating tank, and then the dehydrated coal is stored in a tank and continuously supplied, so in this case, the tank capacity is large. This has disadvantages such as high equipment cost and long dewatering time.

The present invention improves the shortcomings of the conventional granular coal dehydrator as described above.It continuously performs gravity dehydration of granular coal, air flow dehydration, and discharge of dehydrated coal in one device, and improves the dehydration efficiency of granular coal. The main purpose is to improve

An example of an embodiment of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 indicates the main body of a granular charcoal dehydrator, and inside this main body 1 there are three partition walls 9 each with 12
Inside the main body, by placing them at equal angles of 0°,
As shown in FIG. 2, room A 17, room B 18, and room C 1
It is divided into 9 rooms, 17 rooms A and 18 rooms B.

A granulated coal inlet 2 and a hot air outlet 3 are provided in each of the C chambers 19 and 19, and a switching valve 4 is rotatably attached to the opening at the bottom of the dehydrator body 1 via a support shaft 20. This switching valve 4 is divided into three parts at an angle of 120° with the center of its surface as the center point, as shown in FIGS. 3 and 4, corresponding to the three divided chambers of the dehydrator main body 1 described above. In addition, dewatering nets 5a and 5b and openings are formed to allow only water to pass through without passing granular charcoal, and as shown in FIG. A discharge chute 7 is provided below the opening 6, and these are configured to rotate together with the switching valve 4.

The switching valve 4 may be rotated manually using the handle 15, but it can be automated, for example, by receiving an external signal after a predetermined period of time as shown in FIG. The electromagnetic clutch 16 is engaged, transmitting the rotation of the switching valve drive reducer 11 which is constantly rotating to the pinion 12, and rotating the rack 13 connected to the switching valve 4, thereby rotating the switching valve 4.

The rotation of the switching valve 4 may be such that when it reaches the position of a limit switch 14 provided at a predetermined position on the main body 1, the electromagnetic clutch 16 is disengaged and stopped by this switch signal.

Next, to explain the operation of the present invention, the granulated charcoal containing moisture is transferred to the granulated charcoal inlet 2 of the chamber A 17 which is divided into three parts in the main body 1.
When the charcoal is placed in the same chamber, the switching valve 4 is also rotated, and the dehydration net portion 5a is located at the lower part of the A chamber 17, where gravity dehydration of the granular coal is performed.

The half water of the granular coal enters the water receiving tank 10 via the dewatering net section 5a and the dehydrating tank 8, and is discharged to the outside.

On the other hand, in the B chamber 18, hot air is sent from the hot air fan 3, and the water droplets suspended between the granular coals subjected to gravity dehydration are introduced into the water receiving tank 10 via the dehydration tank 8 from the dehydration net part 5b of the switching valve 4. Discharge to the outside.

In the C chamber 19, the dehydrated granular coal is dropped into the discharge chute 7 through the opening 6 of the switching valve 4 and discharged to the outside.

Gravity dehydration and airflow dehydration of the granular coal in chamber A 17, chamber B 18, and chamber C 19, and discharge of the dehydrated granular coal are performed simultaneously within a predetermined time.

After a predetermined period of time has elapsed, the switching valve 4 is rotated 120 degrees clockwise as shown in FIGS. , the opening 6 is located under the B chamber 18, and the dehydration net portion 5a is located under the C chamber 19.

Then, granular coal containing moisture is put into the granular coal inlet 2 of chamber C 19 (empty after dehydrating coal is discharged) and gravity dehydration is performed. The water enters the water receiving tank 10 via the hot air tank 10, and the hot air is sent into the room from the hot air port 3 in the room A 17 (which contains granular coal subjected to gravity dehydration) to perform airflow dehydration, and the dehydrated water is sent to the dehydration net part 5.
b. The water enters the water receiving tank 10 via the dehydration tank 8, and at the same time, the dehydrated granular coal in the C chamber 19 (containing the air-dehydrated granular coal) is dropped from the opening 6 into the discharge chute 7 and discharged to the outside. let

Furthermore, after a predetermined period of time has elapsed, the switching valve 4 is turned clockwise by 120°.
The granular coal is rotated by .degree., and the gravity dehydration of the granular coal in the B chamber 18, the air flow dehydration of the granular coal in the C chamber 19, and the discharge of the dehydrated coal in the A chamber 17 are performed in the same manner as described above.

Furthermore, after a predetermined period of time has elapsed, the switching valve 4 is turned clockwise by 120°.
When rotated, the switching valve 4 returns to the above-mentioned first stage, that is, the state shown in FIG. 3, so that the granular coal can be dehydrated and the dehydrated coal can be discharged in the same manner as described above.

Note that ice leaking from the gap between the bottom of the main body 1 and the switching valve 4 flows into the water leakage gutter 21 and flows down into the water receiving tank 10.

According to the present invention, gravity dehydration of granular charcoal, air flow dehydration, and discharge of dehydrated charcoal are performed sequentially in a merry-go-round manner in three chambers of the dehydrator main body, so it is possible to further improve the dehydration efficiency of granular charcoal. In addition, since a certain amount of dehydrated granular coal can be continuously supplied to the regeneration furnace, the operation management of the regeneration furnace becomes easy and the regeneration efficiency of the granular coal is improved.

Furthermore, according to the present invention, special equipment such as a centrifugal dehydrator or a screw conveyor is not required, so equipment costs can be reduced and the installation area can be reduced.

[Brief explanation of drawings]

The drawings show embodiments of the present invention; Fig. 1 is a longitudinal cross-sectional view of the continuous granular coal dehydrator of the present invention, and Fig. 2 shows the main body of the dehydrator divided into three chambers by a partition wall. FIG. 3 is a plan view of a switching valve forming one opening and two dewatering net portions, and FIG. 4 is a plan view showing the switching valve shown in FIG.
FIG. 5 is a plan view showing a state rotated by 0°, and a partially enlarged longitudinal sectional explanatory view showing a state in which a switching valve is attached to an opening at the bottom of the dehydrator main body. 1... Dehydrator body, 2... Granular coal population, 3... Hot air inlet, 4... Switching valve, 5
...Dehydration net part, 6...Opening part, 7...
...Discharge chute, 8...Dehydration tank 9...
...Bulkhead, 10...Water tank, 11...
・Reduction gear for driving switching valve, 12...Pinion, 1
3... Rack, 14... Limit switch, 15... Handle, 16... Electromagnetic clutch, 17... Room A, 18... ...Room B, 19...Room C, 20...Spindle, 21
...Leakage gutter.

Claims (1)

[Scope of utility model registration request] 1. Inside the main body of the granular coal dehydrator, which has an open bottom, three partition walls are arranged at equal angles of 120 degrees with the center of the main body as the center point, dividing the main body into three chambers, and each chamber has a granular coal dehydrator. An activated carbon inlet and a hot air inlet are respectively provided, and a switching valve is rotated in which an opening at the bottom of the main body is divided into equal angles of 120° with the center as a center point to form one opening and two dehydration net parts. A continuous granular coal dehydrator characterized in that the granular coal is attached in a pressure-contact manner, and by rotating a switching valve 120° at a time, gravity dehydration of the granular coal, air flow dehydration, and discharge of the dehydrated coal are sequentially performed in each chamber. 2. The continuous granular charcoal dehydrator as set forth in claim 1, wherein a dehydrated charcoal discharge chute is communicated under the opening of the switching valve, and a dehydration tank is communicated under the dehydration net.