JPS6241918B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of loading slurry in a slurry carrier.

A conventional example will be explained based on FIG. In the figure, 1 is a coal slurry carrier having a plurality of holds 2A to 2F, 3 is a hatch coaming in each hold 2A to 2F, 4 is an upper overflow port provided at the top of each hold 2A to 2F, and 5 is each hold 2A. ~2F
Central overflow port provided in the central part of the interior, 6
is a lower overflow port provided in the lower part of each hold 2A to 2F, and each overflow port 4, 5, 6 is provided with a filter (wire mesh) having an opening of 3 mm, for example. 7 is each hold 2A~2
The central trunk part 8 formed between F is an overflow recess provided in communication with the lower part of each central trunk part 7, and each overflow port 4, 5, 6
The slurry water that has passed through the filter is collected in this overflow recess 8. 9 is each hold 2A
A coal slurry supply path 11 supplies the coal slurry 10 to 2F, 11 is a coal slurry input pipe provided at the tip of the coal slurry supply path 9, and 12 is a pipe for supplying overflow water collected in each overflow recess 8 from a bell mouth 13. A slurry water discharge path 15 which is discharged through the pump 14 is a single point moored buoy interposed in the middle of the path to make the coal slurry supply path 9 and the slurry water discharge path 12 follow the seabed 16.

With this configuration, the coal slurry 10 is sequentially supplied from the coal slurry supply route 9 to each hold 2A to 2F, and the slurry water collected in each overflow recess 8 is immediately returned to land via the slurry water discharge route 12. It was being done.

However, for example, when coarse grained coal is loaded into each hold 2A to 2F by slurry transportation together with slurry water, the coal has a large particle size and has very good dewatering properties, so it passes through the overflow ports 4, 5, and 6. Fine powdered coal (-100μ) with slurry water
There was also the problem that a large amount of water was washed away. According to what has been confirmed, overflow port 4,
Approximately 7 to 8% with 5 and 6 filter openings of 3 mm
This means that about 8,000 tons of pulverized coal was washed away out of a 100,000-ton load.

The purpose of the present invention is to solve such problems by loading objects to be transported together with slurry water into appropriate holds of a slurry transport ship having a plurality of holds by slurry transport, and removing fine objects discharged from the loaded holds. into another cargo hold that has already been loaded, and collect the fine cargo using the loaded material layer in this other cargo hold as a filter,
This objective is achieved by providing a method for loading slurry on a carrier ship, which is configured to discharge slurry water discharged overboard during collection, thereby reducing the amount of fine material transported. This makes it possible to improve cargo handling efficiency.

The method of the present invention will be explained in detail below based on the drawings showing one embodiment thereof. 2 to 5, reference numeral 17 indicates a ship hold (2E in FIG. 3, 2A in FIG. 4, 2A in FIG. 5) where coal slurry 10 is being loaded.
D) Another hold (2B in Figure 3,
2E in Fig. 4, 2A in Fig. 5) the first pump 18
Slurry water circulation path 19 is connected to the other ship hold (2B in Figure 3, 2B in Figure 4) into which slurry water is input through the slurry water circulation path 17.
E is a slurry water discharge path that returns the slurry water discharged from 2A) to land through the second pump 20. Since the other configurations are the same as those shown in FIG. 1, the same reference numerals are given and the explanation will be omitted.

As shown in FIG. 2, coal slurry 10 is first supplied to a suitable ship hold 2B from coal slurry supply path 9. At this time, the slurry water containing fine pulverized coal discharged from the hold 2B is returned to land via the slurry discharge path 19 and reused for slurrying the coal. Thereby, loading is completed into only one hold 2B among the plurality of holds 2A to 2F. In addition,
The amount of cargo loaded into hold 2B should be slightly less than the full capacity.

Next, as shown in Figure 3, move to another suitable hold 2E.
From the coal slurry supply route 9 to the coal slurry 10
supply. At this time, the slurry water containing fine pulverized coal discharged from the hold 2E is introduced into the loaded hold 2B through the slurry water circulation path 17. Then, the coal seam in the hold 2B acts as a filter, fine coal is recovered, and slurry water containing almost no fine coal is discharged from the hold 2B. As a result, the hold 2B, which has collected fine coal, becomes fully loaded. Slurry water that does not contain fine coal is returned to land via the slurry water discharge route 19 and reused for slurrying coal. The amount of cargo loaded into hold 2E should be slightly less than the full capacity.

As shown in FIG. 4, when the loading of the hold 2E is completed, coal slurry 10 is supplied from the coal slurry supply path 9 to another appropriate hold 2A. At this time, the slurry water containing fine pulverized coal discharged from the hold 2A is introduced into the hold 2E where loading was completed second through the slurry water circulation path 17. In this case, the coal bed in the hold 2E acts as a filter to collect fine coal, and slurry water containing almost no fine coal is discharged from the hold 2E. As a result, the hold 2E, which has collected fine coal, becomes fully loaded. Slurry water that does not contain fine coal is returned to land via the slurry water discharge route 19 and reused for slurrying coal. Note that the amount of cargo loaded into hold 2A at this time is also slightly less than the full capacity.

As shown in FIG. 5, when loading of the hold 2A is completed, coal slurry 10 is supplied from the coal slurry supply path 9 to another appropriate hold 2D.
At this time, the slurry water containing fine powder coal discharged from the hold 2D is introduced into the hold 2A, which has been loaded third, through the slurry water circulation path 17. Then, in the same way as the above-mentioned operation, the coal seam in the hold 2A acts as a filter, fine coal is recovered, and slurry water containing almost no fine coal is discharged from the hold 2A. As a result, the hold 2A in which the fine coal has been collected becomes fully loaded.
Slurry water that does not contain fine coal is returned to land via the slurry water discharge route 19 and reused for slurrying coal. In addition, the amount of cargo loaded into the hold 2D at this time is also set to be slightly less than the full capacity.

By repeating such operations, the remaining holds 2C and 2F are sequentially loaded with coal slurry 10. In addition, in the explanation of the above configuration and procedure, the valves provided in each path 9, 17, 19 and the first
Although a description of the adjustment of the start and stop of the second pumps 18 and 19 has been omitted, it is clear that appropriate adjustment is necessary in relation to the dewatering speed.

As described above, according to the present invention, it is possible to reduce the amount of finely transported materials that are washed away, and it is possible to improve cargo handling efficiency.

[Brief explanation of the drawing]

FIG. 1 is a schematic longitudinal sectional side view of a coal slurry carrier showing a conventional example, FIGS. 2 to 5 show an embodiment of the method of the present invention, FIG. 2 is a schematic plan view of a coal slurry carrier, and FIG. , 4 and 5 are schematic longitudinal sectional side views of the coal slurry carrier, respectively. 1... Coal slurry carrier, 2A-2F... Hold,
9... Coal slurry supply route, 10... Coal slurry, 17... Slurry water circulation route, 19... Slurry water discharge route.

Claims (1)

[Claims] 1 Load the cargo along with slurry water into an appropriate hold of a slurry carrier ship with multiple holds by slurry transport, and transfer the slurry water containing fine cargo discharged from this loaded hold to another hold that has already been loaded. A method for loading slurry in a slurry carrier, characterized in that the finely transported materials are recovered by using a loaded material layer in another hold as a filter, and the slurry water discharged during recovery is discharged overboard. .