JPS58135031A - Long distance transport piping of large quantity - Google Patents

Abstract

PURPOSE:To prevent accumulation of pulverized coal or the like in a pipe bottom part, by jetting gas from a porous tube in a transport pipe, which transports the pulverized coal or the like of large quantity further in a long distance by gas, to reduce a flow in a pipe bottom and decrease pipe line resistance. CONSTITUTION:A transport pipe 1 is connected to a feed nozzle of a blow tank to flow and transport a granular body of pulverized coal or the like in a pipe 6. Here gas is jetted into the pipe 6 intermittently or in an interlocking state to a flow of the granular body from upper vent parts 4 of porous tubes 2 arranged to a bottom part in the pipe 1 under a condition the bottom sides of the tubes 2 are fixed to a position by a filling material 3. Jetting of this gas decreases pipe line resistance for the granular body and prevents accumulation of the granular body in the bottom part of the pipe.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transport pipe which is particularly effective when transporting fine powder such as pulverized coal over long distances using air or other gases.

When powder and granules are transported by a high-pressure, high-concentration transportation device such as a blue tank, a portion of the powder and granules adhere to the inner walls of the transport pipes, increasing pressure loss in the pipes and increasing energy consumption.

This shadow has a long transport distance! The longer the period, the more pronounced the tendency is.

In order to prevent this, intermittent plug transportation has conventionally been carried out, but since the intermittent transportation does not last over a long distance #l1lii, this method alone is not a solution.

The present invention arranges a four-porous tube made of ceramic or sintered metal in a large-diameter transport pipe, and blows gas continuously or intermittently into the transport pipe from this L-rus tube to reduce the bottom flow of the pipe. The present invention provides a transport pipe that reduces resistance and is simple and economical to manufacture.

To explain the transport pipe according to the present invention with reference to figures, (1) is a horizontal or gently sloped transport pipe, and (2) is a porous tube, at least one of which is arranged in parallel over the entire length of the transport pipe. has been done.

(3) A filler such as Fi resin or cement, preferably 1# or non-shrinkable cement (for example, Denka GSA compounded by Denki Kagaku Kogyo ■).

In the present invention, the arrangement of the porous tube (2) is carried out by simply inserting the porous tube into the transport tube (1), and when injecting the filling material, the bolus shape is appropriately temporarily fixed. The production is extremely simple.

Also, depending on the amount of filler injected, the porous tube (2)
This makes it possible to determine the level in the tube and at the same time to easily change the area of the ventilation section (4) of the glass tube.

In other words, the L-last tube (2) has ventilation holes on the entire surface, but by injecting the filling material (3), the part (5) buried in the filling chamber is inevitably closed, and the openings are closed. is only the ventilation section indicated by code (4).

The above-mentioned transport pipe of the present invention is a cut-out nozzle Kk of a blow tank.
The granular material flows through the tube (6).

On the other hand, the porous tube (2) is edge-squeezed by another gas supply source and ejects gas from the ventilation portion (4) on the upper surface intermittently or in conjunction with the powder flow.

This reduces the pipe resistance against the powder and granules.
This prevents the powder and granules from collapsing into the container, thereby improving the energy consumption for transportation.

In addition, the gas supplied to the porous tube is optional regardless of the type of transport gas, and safety gas is injected! Alternatively, the powder pipe can be connected to the supply of powder and granules.

Further, the number, diameter, air permeability, etc. of the porous tubes can be arbitrarily selected and can be freely combined according to various uses.

In addition, when the piping is a large-diameter pipe, it is not necessary to continuously connect the stave (2) along the entire length of the piping. It is possible to supply gas to each section individually by blinding the end (21) of the tube; in this case, there is an advantage that the amount of gas supplied to the porous tube can be adjusted for each section.

Furthermore, it is also possible to arrange the porous tubes in the transport pipe in a staggered manner) and to cover the porous tubes with a campus sleeve using a fixing fitting or the like.

Of course, even in such a case, the fixing fitting can be fixed together with the porous tube using the filler.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of the transport pipe of the present invention, Fig. 2 is a longitudinal cross-sectional view thereof, Fig. 3 is a cross-sectional view of another embodiment, and Fig. 4 is a longitudinal cross-sectional view of the case where the two-piece tubes are not connected. be. (1) --- Transport pipe, (2) --- Porous tube,
(3) Filler, (4) - Ventilation hole surface

Claims (1)

[Claims] A porous tube is arranged parallel to the inner bottom of a horizontally arranged transport pipe, and the lower surface of the porous tube is fixed in place by the filler injected into the transport pipe, and the porous tube is passed through the transport pipe. A large quantity of powder and granular material long-distance transport pipe, characterized in that the pores are closed and gas is ejected from the porous tube into the transport pipe to reduce pressure loss due to pipe bottom flow.