DE10109682A1 - Well pipe separator removing petrol and oil safely from water in potentially-explosive conditions, employs float valve operated by compressed air - Google Patents

Abstract

The oil (and petrol) inlet vessel is held floating on the water, in the oily phase. It is connected by a passage (14) to the oil collector vessel (2) below. A floating valve plug (13) is located below the passage, and is able to close it. A compressed air line (8) is connected into the oil collector below the valve. The drain line (9) leaves the collector vessel and enters an above-ground tank. Preferred features: The inlet vessel has a hydrophobic filtration system, admitting only the hydrophobic, oily phase. The filter body (12) comprises a perforated, petrol-resistant material. The valve plug has clearance from the inner wall of the collection vessel, and is designed to float on the oily phase in the collector. When the valve plug moves vertically upward into the passage opening, it is held mechanically, sealing it closely.

Description

Technical field

The invention relates to the removal of hydrophobic floating on water Phases from the ground.

State of the art

Phase inlet bodies, from which float, float in vertical well pipes the entering petrol / oil is extracted.

Object of the invention

The object of the invention is to work automatically in a well pipe of the system that is capable of performing with little maintenance Water floating hydrophobic phases, spec. Oil / petrol, from the ground rich to remove. The system is intended to be used in potentially explosive atmospheres Zone 0 can work.

Presentation of the invention

The invention is indicated by the characterizing part of claim 1 Features solved.

An essential feature of the invention is the combination of a hydro phobe phase lowered phase inlet body with an underneath Chen phase collecting body by placing on the collected hydrophobic Phase valve body floats. A compressed air line leads to the phase seed Melkörper in the area below the valve body. With compressed air the passage between the phase entry body and the phase collection becomes bumpy body locked. The compressed air has such an overpressure that it sufficient, the hydrophobic phase located in the phase collecting body through to press a drain into an above-ground tank.

After the phase collecting body has been emptied, the compressed air pulse becomes auto ends mathematically, the valve body falls back and gives the passage between phase entry body and phase collection body again free. Through the Use of a compressed air controlled valve instead of an electrically operated one explosion risk in gasoline / air mixtures is excluded. Instead of a floating valve body, a valve body is also conceivable that in a holding device directly below the passage between Pha Seneinlaufkörper and phase collecting body is held. It can by weight  or spring force to release the passage as a restoring force, solan no blast of compressed air pushes him into the passage.

The phase inlet body has, for. B. as an outer wall, a filter on the only the hydrophobic phase lets through, but not the water. Such a For example, the filter body consists of ben interspersed with the finest holes interest-resistant material.

Phase inlet bodies and phase collecting bodies in approximately tube are preferred shaped and elongated and at a constant distance via a connection piece connected with passage.

The phase entry body is preferably suspended from a suspension Rope, kept at the level of the hydrophobic phase.

The water level above which there is a slight hydrophobic phase det, is level controlled, e.g. B. on the speed control of the underwater pump.

At the bottom of the phase collector body is a weight as ballast, if the Due to its construction, the phase collecting body is not ge of its own accord has enough weight to prevent it from expanding. In principle, everything is Ballast is not necessary, however, if the entire apparatus is not on a rope is hung up, but with the help of a rigid rod up and down be is moved.

The setting of the automatically following compressed air pulses depends on the afterflow of the hydrophobic phase. The clock phases are featured chooses that the filling of the phase collecting body is guaranteed.

Fig. 1 shows in longitudinal section an embodiment of the invention, in which the phase inlet body and phase collecting body are each approximately tubular and are connected to one another by a transition piece. The phase entry body is suspended from a rope at its upper end, and a weight is suspended as ballast at the lower end of the phase collection body. The compressed air is introduced into the underside of the phase collecting body via a flexible compressed air line. The compressed air line is held on the side of the phase collecting body by guide channels.

The derivation for the collected hydrophobic phase is also by a Guide channel held on the side of the phase collector body.

In the phase collecting body is floating on the hydrophobic Phase, a valve body that against the inner wall of the phase collection body has so little play that a sudden blast of compressed air follows the valve body  presses into the through opening to the phase inlet body and this closes. This creates an overpressure in the phase collector body, which the hydrophobic phase located there by deriving upwards in transported the above-ground tank. (The game between valve and inner wall depends on the strength of the air blast and the weight of the valve body.)

Fig. 2 shows at the level of the phase collecting body a cross section through the well pipe with the system located therein. Contaminated groundwater is pumped upwards through the riser pipe of the submersible pump located below the oil skimming system and fed to a water purification system.

Legend

1

Phase inlet body

2

Phase collecting body

3

cable suspension

4

Weight

5

well pipe

6

Water level (level controlled)

7

Hydrophobic phase

8th

Compressed air line

9

Derivation for the hydrophobic phase

10

Automatic for compressed air control

11

water

12

filter body

13

Valve body, floating

14

Passage between phase inlet body and phase collector body

15

Suction point of the submersible pump

16

Collection tank for hydrophobic phase

17

Bracket for compressed air hose

18

Bracket for fuel hose

19

Underwater pump riser

Claims (5)

1. Inside a well pipe system for removing water-floating hydrophobic phases from the ground, characterized in that it has at least the following components:

• a) phase inlet body which is in the hydrophobic phase floating on the water,
• b) phase collecting body underneath the phase inlet body and connected to it with a passage,
• c) valve body below the passage between the phase inlet body and the phase collecting body, which is able to close this passage,
• d) compressed air line with feed into the phase collecting body below the valve body,
• e) discharge from the phase collection body into an above-ground tank.

2. Plant according to claim 1, characterized in that the phase inlet body is a filter system has that only the hydrophobic phase, but not the water. 3. Plant according to claim 2, characterized in that the filter body of the filter system made of perfo gated, gasoline-resistant material.   4. Plant according to at least one of claims 1 to 3, characterized in that the valve body loose and with play to the In nenwand of the phase collecting body on the hydrophobic phase in the Pha is designed to float. 5. Plant according to at least one of claims 1 to 3, characterized in that the valve body with vertical mobility up into the passage opening, just below the passage is held by mechanical means.