Aging oil treatment system

Abstract

The aging oil treatment system comprises an in-station liquid storage pool and an oil tank, an opening in the top of the in-station liquid storage pool is connected with the input end of a self-suction feeding pump through a pipeline, the output end of the self-suction feeding pump is connected with a separation and modulation box through a pipeline, a centrifugal machine feeding pump is arranged on one side of the separation and modulation box, and a centrifugal machine feeding pump is arranged on the other side of the separation and modulation box. The input end of the centrifugal machine feeding pump is connected with the separation and modulation box through a pipeline; the output end of the self-suction feeding pump and the output end of the centrifugal machine feeding pump are connected with a three-phase horizontal spiral centrifugal machine through pipelines, an oil outlet pipe of the three-phase horizontal spiral centrifugal machine is connected with an oil storage tank, and a liquid outlet pipe of the three-phase horizontal spiral centrifugal machine is connected with a waste water tank. Under the condition that the demulsifier is added, the three-phase horizontal screw centrifuge is used for separating oil, water and residues in the aged oil, so that oil phase, water phase and solid phase impurities can be fully separated.

Description

Technical Field

[0001] The invention relates to the technical field of aged oil treatment, in particular to an aged oil treatment system. Background Art

[0002] Aged oil is crude oil that is difficult to treat with existing technical means during the oil field production process. These crude oils may come from floating oil on the top of the sewage storage tank, and crude oil that has been seriously emulsified for a long time at the bottom of the crude oil storage tank. Aged oil also exists in the sewage recovery tank and the oil-water transition layer in the dehydrator. Due to the effects of chemicals, mechanical impurities, colloid asphaltene, bacteria, air, cyclic shear and other factors, the emulsified state of these aged oils is becoming more and more stable. Conventional chemicals and treatment methods cannot be used to treat them, which has a great impact on the crude oil dehydration system. Aged oil is very large in old oil fields.

[0003] Therefore, an aged oil treatment system is designed to solve the above-mentioned problems. Summary of the invention

[0004] The object of the present invention is to provide an aged oil treatment system to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: an aged oil treatment system, comprising a liquid storage tank and an oil tank in a station, wherein the top opening of the liquid storage tank in the station is connected to the input end of a self-priming feeding pump through a pipeline, and the output end of the self-priming feeding pump is connected to a separation modulation box through a pipeline, a centrifuge feeding pump is arranged on one side of the separation modulation box, and the input end of the centrifuge feeding pump is connected to the separation modulation box through a pipeline;

[0006] The output end of the self-priming feeding pump and the output end of the centrifuge feeding pump are connected to a three-phase horizontal screw centrifuge through a pipeline, the oil outlet pipe of the three-phase horizontal screw centrifuge is connected to an oil storage tank, and the liquid outlet pipe of the three-phase horizontal screw centrifuge is connected to a wastewater tank;

[0007] The oil inlet of the oil tank is connected to the output end of oil pump one through a pipeline, the input end of oil pump one is connected to the oil storage tank through a pipeline, the in-station liquid storage tank is connected to the output end of oil pump two through a pipeline, and the input end of oil pump two is connected to the separation and modulation box, the oil storage tank and the wastewater tank through a pipeline.

[0008] Preferably, a stirrer is installed on the top of the separation and modulation box, and a stirring rod of the stirrer extends into the separation and modulation box.

[0009] Preferably, a plurality of electric heating rods are installed in the separation modulation box.

[0010] Preferably, a filter and a flow meter are provided on the connecting pipe between the output end of the self-priming feeding pump and the separation modulation box.

[0011] Preferably, a flow meter 2 is provided on the pipeline connecting the output end of the self-priming feeding pump and the output end of the centrifuge feeding pump with the three-phase horizontal screw centrifuge.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] With the addition of demulsifier, a three-phase horizontal screw centrifuge is used to separate the oil, water and residue in the aged oil, so as to facilitate the full separation of the oil phase, the water phase and the solid phase impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention.

[0015] In the figure: 1. Liquid storage tank in the station; 2. Separation and modulation box; 3. Oil storage tank; 4. Wastewater tank; 5. Three-phase horizontal screw centrifuge; 6. Oil tank; 7. Filter; 8. Flow meter 1; 9. Mixer; 10. Electric heating rod; 11. Flow meter 2; 12. Centrifuge feeding pump; 13. Oil pump 2; 14. Oil pump 1; 15. Self-priming feeding pump. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1 The present invention provides a technical solution: an aged oil treatment system, comprising an in-station liquid storage tank 1 and an oil tank 6, wherein the top opening of the in-station liquid storage tank 1 is connected to the input end of a self-priming feed pump 15 through a pipeline, and the output end of the self-priming feed pump 15 is connected to a separation and modulation box 2 through a pipeline, a centrifuge feed pump 12 is arranged on one side of the separation and modulation box 2, and the input end of the centrifuge feed pump 12 is connected to the separation and modulation box 2 through a pipeline;

[0018] The output end of the self-priming feeding pump 15 and the output end of the centrifuge feeding pump 12 are connected to the three-phase horizontal screw centrifuge 5 through a pipeline, the oil outlet pipe of the three-phase horizontal screw centrifuge 5 is connected to the oil storage tank 3, and the liquid outlet pipe of the three-phase horizontal screw centrifuge 5 is connected to the wastewater tank 4;

[0019] The oil inlet of the oil tank 6 is connected to the output end of the oil pump 14 through a pipeline, the input end of the oil pump 14 is connected to the oil storage tank 3 through a pipeline, the liquid storage tank 1 in the station is connected to the output end of the oil pump 2 13 through a pipeline, and the input end of the oil pump 2 13 is connected to the separation and modulation box 2, the oil storage tank 3 and the wastewater tank 4 through a pipeline.

[0020] In the present invention, a stirrer 9 is installed on the top of the separation and modulation box 2, and a stirring rod of the stirrer 9 extends into the separation and modulation box 2, so as to facilitate full mixing of the demulsifier and the liquid in the separation and modulation box 2.

[0021] In the present invention, a plurality of electric heating rods 10 are installed in the separation and modulation box 2 to facilitate heating of the separation and modulation box 2 .

[0022] In the present invention, a filter 7 and a flow meter 8 are provided on the connecting pipe between the output end of the self-priming feeding pump 15 and the separation modulation box 2.

[0023] In the present invention, a flow meter 11 is provided on the pipeline connecting the output end of the self-priming feeding pump 15 and the output end of the centrifuge feeding pump 12 with the three-phase horizontal screw centrifuge 5 .

[0024] The present invention: a liquid storage tank 1 in a station is transported to a separation and modulation box 2 through a pipeline by a self-priming feeding pump 15, and then a demulsifier is added to the separation and modulation box 2, and the liquid and the demulsifier in the separation and modulation box 2 are stirred by a stirring machine 9. At the same time, the separation and modulation box 2 is heated by an electric heating pump 10, and the liquid in the separation and modulation box 2 is transported to a three-phase horizontal screw centrifuge 5 by a centrifuge feeding pump 12. The three-phase horizontal screw centrifuge 5 separates the oil, water and residue in the aged oil, and transports the wastewater to a wastewater tank 4, and the oil to an oil storage tank 3. Then, the separated oil is transported to an oil tank 6 by an oil delivery pump 14.

[0025] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. Although the embodiments of the present invention have been shown and described, it is understood by ordinary technicians in the field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An aged oil treatment system, comprising an in-station liquid storage tank (1) and an oil tank (6), characterized in that: The top opening of the liquid storage tank (1) in the station is connected to the input end of a self-priming feeding pump (15) through a pipeline, and the output end of the self-priming feeding pump (15) is connected to a separation modulation box (2) through a pipeline, and a centrifuge feeding pump (12) is arranged on one side of the separation modulation box (2), and the input end of the centrifuge feeding pump (12) is connected to the separation modulation box (2) through a pipeline; The output end of the self-priming feeding pump (15) and the output end of the centrifuge feeding pump (12) are connected to a three-phase horizontal screw centrifuge (5) through a pipeline, the oil outlet pipe of the three-phase horizontal screw centrifuge (5) is connected to an oil storage tank (3), and the liquid outlet pipe of the three-phase horizontal screw centrifuge (5) is connected to a wastewater tank (4); The oil inlet of the oil tank (6) is connected to the output end of the oil pump 1 (14) through a pipeline, the input end of the oil pump 1 (14) is connected to the oil storage tank (3) through a pipeline, the in-station liquid storage tank (1) is connected to the output end of the oil pump 2 (13) through a pipeline, and the input end of the oil pump 2 (13) is connected to the separation and modulation box (2), the oil storage tank (3) and the wastewater tank (4) through a pipeline.

2. The aged oil treatment system according to claim 1, characterized in that: A stirrer (9) is installed on the top of the separation and modulation box (2), and a stirring rod of the stirrer (9) extends into the separation and modulation box (2).

3. The aged oil treatment system according to claim 1, characterized in that: A plurality of electric heating rods (10) are installed in the separation and modulation box (2).

4. The aged oil treatment system according to claim 1, characterized in that: A filter (7) and a flow meter (8) are provided on the connecting pipeline between the output end of the self-priming feeding pump (15) and the separation modulation box (2).

5. The aged oil treatment system according to claim 1, characterized in that: A flow meter 2 (11) is provided on the pipeline connecting the output end of the self-priming feeding pump (15) and the output end of the centrifuge feeding pump (12) with the three-phase horizontal screw centrifuge (5).

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