RU31733U1 - Installation for oil demulsification - Google Patents

Description

2O03l090t3

. T. ... / .. - ...:. Irb .. "4iiiie Hii 111

DEVICE FOR OIL DEMULSION.

The utility model relates to devices used to separate oil from produced water and gases dissolved in it, and can be used in the oil refining and oil producing industries.

A well-known installation for separating oil from dissolved gas and formation water is a UDO-3 DEEMULSOR (N. M. Baykov and others. Collection and field treatment of oil, gas and water. M. Nedra, 1981, pp. 156-158), which consists of the following main units: heating chambers and sludge chambers located in a horizontal cylindrical body and separated by a partition. U-shaped flame tubes are mounted from the end part of the heating chamber, which are placed in a special casing - a shell that acts as a heat exchange device. An emulsion distributor and an oil collector are placed in the sludge chamber. An oil inlet pipe and gas, water and oil outlet pipes are located on the demulsifier body. During the operation of the UDO-3 demulsifier, it was revealed that sufficient heating of the oil is not provided and therefore, the effective separation of the oil-water emulsion is not carried out, since the surface of the flame tubes is not sufficient for transmission

BOl 17/04

all the heat of the burning gas. The temperature of the flue gases at the exit of the flame tube reaches 550-60 ° C. This heat leaves the flue gases in the environment and is not used.

The problem solved by the claimed utility model is to increase the efficiency of the process of separation of the emulsion by intensifying the heating of the oil and water emulsion and the process of merging and coarsening of water droplets.

The essence of this utility model is that a heat exchanger is installed in the installation for emulsifying oil at the outlet of the flame tube, which is used for primary heating of the incoming oil with its further supply to the demulsifier through an oil input device, in the lower part of which there is a coalescing nozzle.

Such a constructive solution allows the use of heat from the exhaust gases of the flame tube to heat the crude oil, which is supplied to the unit in the form of an oil and gas emulsion. Placing the coalescing nozzle in the settling part of the chamber under the oil input device promotes the merging and enlargement of water droplets due to the higher density of water, compared with oil in a heated oil-water emulsion. This allows, already in the initial stage, using preheating of oil, to separate part of the water and

Woif

take it out of the further separation process. In this case, the largest amount of water is collected in the settling zone of the heating chamber.

In FIG. 1 shows a plant for oil demulsification. The installation contains a horizontal cylindrical tank 1, divided by an overflow partition 2 into a heating chamber 3 and a sludge chamber 4. The heating chamber 3 is equipped with a flame tube 5. At the exit of the flame tube 5, a heat exchange device 6 is installed, which is connected to the oil input device 7 through the oil input pipe 8 A coalescing nozzle 9 is placed at the bottom of the oil input device 7. In the sludge chamber 4, a coalescing nozzle 10 and an oil collector 11 are installed. The tank 1 is equipped with gas outlet pipes 12, water outlet pipes 13, 14 and a cartridge bkom O oil 15.

Installation for demulsification of oil works as follows.

Crude oil, consisting of an oil-water emulsion and gases dissolved in it, enters a heat exchanger b, which can be made in the form of a shell-and-tube heat exchanger. The oil and gas emulsion passes through a heat exchanger and is heated by the heat of the exhaust flue gases from the flame tube 5. The pre-heated emulsion through the oil inlet 8 is fed to

the oil input device 7 and is sent to the heating chamber 3, where it uniformly flows around the heat pipe 5, is heated to a temperature of 40-50 ° C and enters through the pipe into the oil input device 7 and then passes through the coalescing nozzle 9. At the same time, water droplets coarsen and it sucks due to the higher density of water. The greatest amount of water is collected in the settling zone of the heating chamber 3 and is discharged from the installation through the pipe 1. Associated gas released from the heated oil emulsion through the gas pipe 12 is removed from the installation. Watered oil through the baffle 2 enters the sludge chamber 4 and passes through the coalescing nozzle 10, where the final separation of water occurs. The separated water in the sludge chamber 4 is discharged from the installation through the water outlet pipe 14. The dehydrated oil is collected in the oil reservoir 11 and discharged from the installation through the oil outlet pipe 15.

The use of the proposed installation for oil demulsification can significantly optimize the process of heating the oil and gas emulsion due to a more complete use of the heat of the exhaust flue gases of the flame tubes and significantly increase the efficiency of separation of water from oil.

Claims (1)

Installation for oil demulsification, which includes a horizontal body, a heating chamber with a flame tube, a heat exchanger, an oil input device, a sludge chamber, oil, water and gas outlet pipes, characterized in that the heat exchange device is installed on the output part of the flame tube and connected to a demulsifier oil input device, and in the settling part of the heating chamber, a coalescing nozzle is located under the oil input device.