JPS586822A - Method of removing deposit in pipe - Google Patents

Abstract

PURPOSE:To remove substances deposited in a transporting pipe by providing an auxiliary pipe path parallel to the transporting pipe path to circulate slurry to the transporting pipe path after the slurry has passed through the auxiliary pipe path. CONSTITUTION:In an example of one slurry transporting pipe lines, an auxiliary piping 13 is provided parallel to a pipe line 12 to circulate slurry-like substance through the pipe line 12 and auxiliary piping 13 with a pump 11. Further, by reversing the flow of slurry in the pipe line 12 can be also simply and economically removed the substance deposited in the pipe.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a method for removing precipitated substances in pipes during pipe line transportation.

In pipelines that mix solid materials such as coal and ore with a conveying fluid such as water or oil to form a slurry and transport them over long distances, if these solid materials settle in the pipeline, the capacity of the pipeline will decrease. In order to cause blockage.

Precipitation of solids must be avoided at all costs.

However, in the event of an emergency such as an earthquake, it is unavoidable to leave the slurry inside the pipe and shut it down immediately, and in this case it is inevitable that the solids in the slurry will settle.

In conventional pipelines, in response to this situation,
As shown in Figure 1, cleaning fluid was passed through the pipes, and the fluid containing sediment was either treated with a drainer or discharged into the river via a drain valve.

However, this method has the disadvantage that it causes environmental pollution or requires a separate drain tank that is not always used, which increases the complexity of the device and the cost of the device.

In FIG. 1, 1 is a slurry tank that is the starting point of transportation, and 2 is a cleaning fluid tank installed in parallel with the slurry tank. 2 are switchably connected.

3 is a pot for transporting slurry, 5 is a slurry tack at the end of the transport, and 6 is a cleaning fluid tank installed in parallel with the slurry tank 5. Tanks 5 and 6 are used to open and close pulps 9 and 1o for pipe life 4. Connections can be switched by operation.

In such a device, when cleaning a pipe, cleaning fluid is flowed from the tack 2 into the pipeline 4, and the fluid containing sediment is received in the tank 6, and then post-processed, or a drain pulp (not shown) is opened and discharged into the river. Was.

In view of the above, the present invention proposes a method that can remove solid matter with a simple operation even if it should occur in a pipeline.

For removing precipitated substances in transport pipes during pipe transport of slurry-like substances containing solids.

In-tube precipitation characterized by circulating and transporting a slurry-like substance through an auxiliary pipe attached to a transport pipe, circulatingly transporting a slurry-like substance through a transport pipe and an auxiliary pipe, and incorporating and removing precipitated substances into the slurry-like substance. Provided is a method for removing objects.

According to the method of the present invention, the slurry-like material is circulated and transported through the transport pipe and the auxiliary pipe, and the precipitate in the transport pipe is gradually carried into the slurry-like material and returned to the original slurry-like material. Once all the precipitate has been carried into the slurry material, normal slurry transport can be resumed.

In this case, there is no need to flow the cleaning fluid as in the conventional method described above, so there is a storage space for post-processing the cleaning fluid containing sediment after use and for storing the cleaning fluid.

An excellent advantage is that it eliminates the need to install a drain tank or discharge used cleaning fluid into rivers, etc., so sediment can be effectively removed without complicating the equipment or causing environmental pollution. There is.

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Next, an embodiment of the method of the present invention will be described based on the drawings.

FIG. 2 shows an embodiment in which there is only one pipeline for transporting slurry. In this case, an auxiliary pipe 13 is provided in parallel with pipeline 12 for transporting slurry, and a pump 11 transports the slurry-like material to the pipeline 12. and auxiliary piping 13
The precipitates in the big grino 11 may be removed by transporting them in a circular manner through the slurry.

3 and 4 show another embodiment in which there are two pipelines for transporting slurry.

In the figure, 21 and 22 are pumps for transporting slurry, 23 and 24 are pipelines for transporting slurry, and 25 to 30 are auxiliary pipes provided in this pipeline system.

Figures 3 and 4 respectively show cases in which slurry-like substances are circulated in opposite directions when removing precipitates in pipelines. A filled-in box indicates a closed state, and a blank box indicates an open state.

In this embodiment, the pipeline 23 and.

When removing the precipitate in 24, the pulp in the system is opened or closed as shown.

The slurry material is circulated and transported in the pipelines 23 and 24 and the auxiliary pipes 25 to 30.

The precipitate is gradually incorporated into the slurry material.

Remove the precipitate.

As described above, the method of the present invention has the excellent advantage of being able to effectively remove substances precipitated in transport pipes with simple and inexpensive equipment, and eliminating the need for cleaning fluid and subsequent treatment. It is applicable to transportation of slurry-like substances in general, such as coal slurry, ore slurry, wood chip slurry, dredging slurry, and others.

[Brief explanation of the drawing]

Fig. 1 is a pipeline system diagram showing a conventional method for removing sediment in pipes, Fig. 2 is a pipeline system diagram showing an embodiment of the method of the present invention, and Figs. 3 and 4 are diagrams showing another method of the present invention. It is a pipeline system diagram showing an example. 1... Slurry tank (transportation start point). 2.6...Cleaning fluid tank, 3...Pump. 4...Pipeline for transporting slurry. 5...Slurry tank (transportation end), 11.2+
22... Pump, 12,23.24・Curved・Slurry transportation pipeline, 13.25~30・Strike・Auxiliary piping. Song 1 flash? Shoulder 2 flashes

Claims (1)

[Claims] For removing substances precipitated within a transport pipe during transport of a slurry-like substance containing solids within the pipe. The slurry material is circulated and transported through the auxiliary pipes that are arranged parallel to the transport pipe, and the slurry material is cyclically transported through the transport pipe and the auxiliary pipes, and precipitated substances are taken into the slurry material and removed. A method for removing precipitates in pipes.