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 a demulsifying agent is added, the three-phase horizontal screw centrifuge is used for separating oil, water and residues in the aged oil, so that oil-phase impurities, water-phase impurities and solid-phase impurities can be fully separated.

Description

Technical Field

[0001] This utility model relates to the field of aged oil treatment technology, specifically to an aged oil treatment system. Background Technology

[0002] Aged oil is crude oil that is difficult to process using existing technologies during oilfield production. This crude oil may originate from floating oil on top of wastewater storage tanks, severely emulsified crude oil that has been stagnant at the bottom of crude oil storage tanks for a long time, or it may also exist in wastewater recovery ponds and the oil-water transition layer within dehydrators. Due to the effects of chemicals, mechanical impurities, asphaltenes, bacteria, air, and cyclic shearing, the emulsion state of this aged oil becomes increasingly stable, making it impossible to treat with conventional chemicals and methods. It has a significant impact on crude oil dehydration systems, and is present in large quantities in older oilfields.

[0003] Therefore, an aged oil treatment system is designed to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide an aged oil treatment system to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an aging oil treatment system, including an in-station storage tank and an oil tank, wherein the top opening of the in-station storage tank is connected to the input end of a self-priming feed pump via a pipe, and the output end of the self-priming feed pump is connected to a separation and conditioning box via a pipe, wherein a centrifuge feed pump is provided on one side of the separation and conditioning box, and the input end of the centrifuge feed pump is connected to the separation and conditioning box via a pipe;

[0006] The output end of the self-priming feed pump and the output end of the centrifuge feed pump are connected to a three-phase horizontal screw centrifuge via pipelines. 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 tank's inlet is connected to the output end of oil pump one via a pipeline, and the input end of oil pump one is connected to the oil storage tank via a pipeline. The station's liquid storage tank is connected to the output end of oil pump two via 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 via a pipeline.

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

[0009] Preferably, the separation modulation box is equipped with multiple electric heating rods.

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

[0011] Preferably, a flow meter is installed on the pipeline connecting the output end of the self-priming feed pump and the output end of the centrifuge feed pump to the three-phase horizontal screw centrifuge.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] With the addition of a demulsifier, a three-phase horizontal screw centrifuge is used to separate oil, water, and sludge from aged oil, facilitating the thorough separation of the oil phase, water phase, and solid impurities. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] In the diagram: 1. Liquid storage tank; 2. Separation and conditioning box; 3. Oil storage tank; 4. Wastewater tank; 5. Three-phase horizontal screw centrifuge; 6. Oil tank; 7. Filter; 8. Flow meter one; 9. Mixer; 10. Electric heating rod; 11. Flow meter two; 12. Centrifuge feed pump; 13. Oil pump two; 14. Oil pump one; 15. Self-priming feed pump. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1 This utility model provides a technical solution: an aging oil treatment system, including an in-station storage tank 1 and an oil tank 6. The top opening of the in-station storage tank 1 is connected to the input end of a self-priming feed pump 15 through a pipe, and the output end of the self-priming feed pump 15 is connected to a separation and conditioning box 2 through a pipe. A centrifuge feed pump 12 is provided on one side of the separation and conditioning box 2, and the input end of the centrifuge feed pump 12 is connected to the separation and conditioning box 2 through a pipe.

[0018] The output end of the self-priming feed pump 15 and the output end of the centrifuge feed 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.

[0019] The oil inlet of oil tank 6 is connected to the output end of oil pump 14 via a pipeline. The input end of oil pump 14 is connected to oil storage tank 3 via a pipeline. The liquid storage tank 1 in the station is connected to the output end of oil pump 23 via a pipeline. The input end of oil pump 23 is connected to separation and modulation box 2, oil storage tank 3 and wastewater tank 4 via a pipeline.

[0020] In this invention, a mixer 9 is installed on the top of the separation and conditioning tank 2, and the stirring rod of the mixer 9 extends into the separation and conditioning tank 2 to facilitate the thorough mixing of the demulsifier and the liquid in the separation and conditioning tank 2.

[0021] In this invention, multiple electric heating rods 10 are installed inside the separation and modulation box 2 to facilitate heating of the separation and modulation box 2.

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

[0023] In this utility model, a flow meter 21 is installed on the pipe connecting the output end of the self-priming feed pump 15 and the output end of the centrifuge feed pump 12 to the three-phase horizontal screw centrifuge 5.

[0024] This utility model: The self-priming feeding pump 15 transports the liquid from the station storage tank 1 to the separation and conditioning tank 2 through a pipeline. Then, a demulsifier is added to the separation and conditioning tank 2. The liquid and demulsifier in the separation and conditioning tank 2 are stirred by the agitator 9. At the same time, the separation and conditioning tank 2 is heated by the electric heating pump 10. The liquid in the separation and conditioning tank 2 is transported to the three-phase horizontal screw centrifuge 5 by the centrifuge feeding pump 12. The three-phase horizontal screw centrifuge 5 separates the oil, water and sludge in the aged oil. The wastewater is transported to the wastewater tank 4 and the oil is transported to the oil storage tank 3. Then, the separated oil is transported to the oil tank 6 by the oil transfer pump 14.

[0025] The contents not described in detail in this specification are prior art known to those skilled in the art. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An aging oil treatment system, comprising an on-site storage tank (1) and an oil tank (6), characterized in that: The top opening of the storage tank (1) in the station is connected to the input end of a self-priming feed pump (15) via a pipe, and the output end of the self-priming feed pump (15) is connected to a separation and modulation box (2) via a pipe. A centrifuge feed pump (12) is provided 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) via a pipe. The output end of the self-priming feed pump (15) and the output end of the centrifuge feed 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 first oil pump (14) through a pipe. The input end of the first oil pump (14) is connected to the oil storage tank (3) through a pipe. The station's liquid storage pool (1) is connected to the output end of the second oil pump (13) through a pipe. The input end of the second oil pump (13) is connected to the separation and modulation box (2), the oil storage tank (3), and the wastewater tank (4) through a pipe.

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

3. The aging oil treatment system according to claim 1, characterized in that: The separation modulation box (2) is equipped with multiple electric heating rods (10).

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

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

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