DK145604B - PROCEDURE FOR TRANSFERING A RANGE OF HIGH PURPOSITION TO OR FROM A RANGE OF SEPARATE CONTAINERS - Google Patents

Description

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PATENT AND TRADEMARKET DIRECTORATE

(21) Application No. 2950/75 (51) IntCI.3 F 17 D 3/08 (22) Filing date 27 · Jun. 1975 (24) Race day 27 · Jun. 1975 (41) Aim. available Jan 2 1976 (44) Presented 20 Dec. 1982 (86) International application # - (86) International filing day (85) Continuation day - (62) Master application no -

(30) Priority Jul 1 1974, 24658/74, IT

(71) Applicant ANIC S.P.A., Palermo, IT.

(72) Inventor Giorgio Marconcini, IT: Olindo Properzi, IT.

(74) Clerk of the International Patent Office.

(54) Method of transferring a variety of high purity® grade liquids to or from a variety of se® paper containers.

BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a method for transferring a series of high purity liquids to or from a series of separate containers by means of a pipe loop adapted to be connected partly to a container to be filled or emptied and partly to a container which is filled or emptied, partly with a discharge point or access point for liquid using a locking ball between two different liquids.

3 j. In particular, the invention relates to a method of transmission

0 to or from a tanker of a variety of raw materials and / or liquid D

^ spoon-shaped petroleum products or petrochemicals with a high degree of purity using only one pipeline.

1 3 145604 2

For receiving raw materials and for dispatching finished petroleum or petrochemical products, pipes are used that connect storage sites, refineries, chemical and petrochemical factories with access and / or departure points. These points are almost always located on quayside or floating islands on the high seas.

The greater the volume of liquids to be transferred, the more the liquids are chemically and physically incompatible with each other, the higher their purity, the more necessary it is to keep the liquids apart when transferring pure liquids, when moving " n "clean products, it is necessary to have" n "pumps," n "pipelines to reach the departure and / or access points," n "means for filling and / or discharging between the tankers and the stationary equipment.

The invention aims to transport a whole series of liquids of high purity by up to 99.95%, without mixing them, by means of only one pipeline, thereby reducing all costs considerably, from the installation and maintenance of the equipment to the costs associated with operation.

This is achieved by the method according to the invention by using a pipe loop having at each end a movable pipe that one of the movable pipes is connected to the container to be filled or emptied while the other movable pipe is connected to another container which has already been emptied or filled, that from a container outside said system, an immiscible "plug liquid" is pumped into the pipe loop near the connection between the moving pipe and the container to be filled or emptied, pumping the "plug liquid" and the pure liquid contained in the pipe loop into a locking ball insertion station, introducing a first locking ball into the pipe loop, pumping additional "plugging liquid" behind the first locking ball, and then another locking ball is introduced into the tube loop that the supply of "plug liquid" is stopped, after which the pure liquid contained in the container to be filled or emptied is used to press a third blocking the ball into the pipe loop, discharging the liquid present in the pipe loop into its container, and collecting the blocking balls into a collecting vessel, after which the filling or emptying of the container to be filled or emptied is carried out.

145604 3

By using three blocking balls, a cleaning operation is carried out in the process according to the invention, which for the movable pipes is carried out by the whole of the "plug liquid" acting as a cleaning liquid, and which for the solid pipe is carried out by the part of the "plug liquid" which is present. between it! second and third ratchet balls.

Thus, by working in accordance with this method, a complete purification of all the tubes in the system is performed between each transfer of different liquids, and there is no risk of mixing two liquids to be filled or discharged. This could not be achieved by the prior art with only one locking ball.

The invention is described in more detail below with reference to the drawing, which shows a schematic view of an apparatus for carrying out the method according to the invention.

In the drawing, connecting pipes 1, 2, 3, 4, 5 ... n are shown between storage tanks and switching stations, each containing a high purity liquid.

10 and 11 are tubes about a vertical axis and describe a circular arc so that they can cover all tubes 1, 2, 3, 4, 5 .., n.

12 is a pump for dispatching and / or moving clean liquids by another clean liquid.

13 is a pump for a chemical which is chemically inactive and which cannot physically be mixed with the products to be transported, which liquid is called "prop" liquid.

14 is a tank for the liquid described in connection with the pump 13, A and B in FIG. 1 represents details of the pipes 10 and 11 at the connection points with the pipes 1, 2 etc.

15 is a container for collecting and dispensing elastic rubber balls. This container must be so arranged as to be capable of holding at least three balls and a means enabling the delivery of one ball at a time.

16 is a container for receiving bullets.

17, 18 and 19, the elastic spheres which can be pumped with water or another fluid so that the diameter at the equator becomes 1.5% greater than the internal diameter of the pipeline.

20 are the entry and / or exit points for the pure liquid.

21 is an arrival indicator for the bullets.

22 is a valve controlled by indicator 21.

23 is the pipeline starting from the container 15 and arriving at the access and / or exit points and passing back to the receiving container 16.

24, 25, 26, 27, 28, 29, 30, 31 and 32 are shut-off valves in the system.

It is assumed that the high-purity liquid 1 has already been transported, the pipeline 1, and that the entire circuit is filled with it. It is now desired to dispense the liquid 5. This is done as follows.

The movable tube 10 is moved to the connection next to the pipeline 5.

The balls 17, 18 and 19 are introduced into the container 15, and assuming that all the valves have previously been closed, the circuit is conducted by opening the valves 25, 26, 27, 29, 30, 22, 31 and 32.

The pump 13 is drawn from the tank 14 with the valves 33 and 34 open. In this way, the "plug" liquid replaces the liquid 1 contained in the tube 10 of the pump 12 and allows the ball 17 to start from the container 15.

After pumping a known amount of "plug" fluid, ball 18 is introduced into the system; after pumping a similar amount of "plug" fluid, the pump 12 is started, the valve 24 first being opened, and then the pump 13 being stopped immediately after closing the valves 33 and 34.

. When the pump 12 is running, the ball 19 is introduced into the system so that it now has "clean liquid 5 - pump 12 - container 15 - ball 19 - holding of" plug "liquid - ball 18 - holding of" plug "- Liquid Ball 17 - Pure Liquid Leading Into Collection Line 1. " The liquid column will move and the collected liquid 1 will eventually be replaced by the liquid 5.

When the ball 17 arrives at the collection vessel 16, the indicator 21 will indicate its arrival.

As the ball 18 passes the indicator 21, the valve 22 is closed and at the same time the pump 12 is started.

At this point, the system is hydraulically filled with the clean liquid 5. There are now two alternatives: A) Delivery of the liquid 5.

After closing the valves 30, 31 and 32, the pump 12 is started and, as the departure point 20 is previously connected, the ship connected to the point 20 is filled.

B) Receiving the fluid 5.

The movable pipe 11 is displaced after the valves 31, 32 of the manifold 1 are connected to the manifold 5. Then the

Claims (1)

US604 5 valves 24, 25, 26, 29 and valves 31, 32 and 22 are opened again. The tanker, which is connected to point 20, can now start its delivery. The ball 19, which has remained in the pipeline, arrives at the pressure of the liquid discharged from the tanker, which liquid passes to a collection point of the product 5, into the collecting vessel 16. By the above described method of displacing the product 5, another liquid can be transported. etc. With the method according to the invention, the operation of loading and / or unloading of the vessels is speeded up, the operating costs are reduced and if "S" is the investment cost of transporting "n" clean products with the usual system, the investment cost will be reduced to S / n. Method for transferring a series of high purity liquids to or from a variety of separate containers (1, 2, 3, 4, 5, ... n) by means of a pipe loop (10, 23, 11) arranged to be connected partly to a container to be filled or emptied, partly to a container which is filled or emptied, and partly to a discharge point or access point for liquid using a barrier ball between two different liquids, characterized in that a a pipe loop having at each end a movable tube (10, 11) that one of the movable tubes (10) is connected to the container (5) to be filled or emptied while the other movable tube (11) is connected to another container (1) already emptied or filled that from a container (14) outside said system, an immiscible "plug liquid" is pumped into the pipe loop near the connection (A) between the movable pipe (10) and the container (5) to be filled or emptied of the "plug liquid" and the clean liquid spoon located in the pipe loop is pumped through it to an insertion station (15) for locking balls, where a first locking ball (17) is inserted into the pipe loop, that additional "plug liquid" is pumped in behind the first locking ball (17), after which a locking ball (18) is inserted into the pipe loop,