JPS6051369B2 - High viscosity sludge dust removal equipment - Google Patents

Description

[Detailed Description of the Invention] Sludge accumulated in rivers in ports and urban areas is dredged by dredgers because it causes pollution, but in general, sludge that has accumulated in rivers in ports and urban areas is dredged by dredgers. And on top of that, a lot of garbage is mixed in.

A high-pressure pump is required to pump high-viscosity dredged sludge from a ship to a dumping site via a water pipe, and a piston-type pump is suitable for this purpose, but these pumps naturally require a valve. Valve problems are caused by dust. If the viscosity of water mixed with dredged river water is low, a normal centrifugal pump without a valve can be used and troubles will be avoided, but dewatering treatment at a dumping site will be required, which is economically disadvantageous. The present invention is an apparatus for removing garbage mixed in dredged sludge with high viscosity without reducing the viscosity of the sludge,
This eliminates problems with pump valves caused by dirt.
When using a regular vibrating mesh sieve to remove dust mixed in high viscosity sludge, the mesh size is 5 to remove dust that is small enough not to affect the valves of pistol pumps, etc.
Must be less than or equal to ~1.

With such a small mesh, the highly viscous sludge sticks to the mesh and does not pass through, and the sludge simply rolls around on the mesh while still encasing dirt, and the purpose of the dangerous device is not achieved at all. The fundamental principle of the present invention is based on the phenomenon that sludge does not adhere to heated (approximately 100° C. or higher) metal pipes, etc., even if the sludge has a high viscosity (200 to 500 poise).

To explain one example with reference to the figure, 1 is a metal pipe, and a plurality of pipes are arranged in parallel at appropriate intervals, both ends of each pipe are connected to a collecting pipe 2, and a conduit 3 is connected to the collecting pipe 2.
is installed. Now, when a sufficiently heated fluid such as steam oil is passed from one side of the conduit 3 to the other, the metal tube 1 is also heated through the collecting pipe 2. If high viscosity sludge is flowed over the parallel metal tubes 1 while maintaining the fluid temperature so that the surface temperature of each metal tube 1 is always about 100°C or higher, it will not stick to the heated metal tubes. Based on this, sludge immediately falls downward from the gap between the pipes, just like water,
Only the dirt contained in the sludge remains on one row of pipes. The remaining dirt can be taken out of the row of tubes 1 by providing the tubes 1 at an angle or by applying vibration to the tubes 1. In the present invention, fine dust can be removed by narrowing the gap between the tubes.

In addition, by using a fluid with a high specific heat to flow into the pipe, the surface of the pipe is always maintained at approximately 100°C even when it comes into contact with cold sludge.
can be maintained above.

[Brief explanation of drawings]

The drawings are explanatory diagrams of an example of implementing the present invention. 1 is a metal pipe, 2 is a collecting pipe, and 3 is a conduit.

Claims (1)

[Claims] 1. As shown in the figure, multiple metal pipes are arranged in parallel at appropriate intervals, and both ends of the pipes are connected by a collecting pipe, and heated steam, oil, or other fluid is passed through the conduit connected to the collecting pipe. The surface temperature of each metal tube is maintained at approximately 100℃ or higher, and high-viscosity sludge is poured over the row of metal tubes.The sludge falls through the gaps between the metal tubes, but the dirt in the sludge remains on the row of metal tubes. Dust removal equipment for high viscosity sludge.