Embedded online dirty oil discharge facility for refinery plant

Abstract

The utility model discloses an embedded type on-line dirty oil discharge facility for a refinery plant, which comprises an embedded type dirty oil tank, the upper end of the dirty oil tank is connected with an inlet pipeline, a pressure pipeline, an emptying pipeline, a nitrogen pipeline and a sewage pumping pipeline, the tail end of the sewage pumping pipeline is arranged at the bottom of the dirty oil tank, and a filter screen is wrapped at the tail end of the sewage pumping pipeline. At least one stop valve is arranged on each of the inlet pipeline, the pressure pipeline, the emptying pipeline and the sewage pumping pipeline, two stop valves are arranged on the nitrogen pipeline, a funnel is connected to the upper end of the inlet pipeline, a filter layer is arranged in the funnel, and the device has the technical characteristics that secondary safety and environmental protection accidents caused by high waste oil cleaning difficulty and easy leakage can be solved.

Description

Technical Field

[0001] The utility model relates to a waste oil discharge facility, more specifically, to an embedded online waste oil discharge facility for refineries, belonging to the field of petrochemical industry. Background Art

[0002] The lack of online waste oil treatment facilities in the traditional refinery unit area makes it impossible to treat waste oil and condensate generated during normal operation and maintenance, equipment start-up and shutdown, switching or abnormal operating conditions. They can only be collected in hazardous waste barrels, which are very easy to leak and flow into the drainage ditch along the ground to pollute the water or soil, causing damage to the ecological environment. Secondly, it increases the difficulty of work, increases unnecessary workload, prolongs the time for troubleshooting, greatly reduces work efficiency, and is quite unfavorable to maintaining long-term and stable production. Utility Model Content

[0003] In order to solve the above-mentioned problems of the prior art, the utility model provides a buried online waste oil discharge facility for refineries, which has technical characteristics that can solve the problems of difficulty in cleaning waste oil and secondary safety and environmental accidents caused by leakage.

[0004] In order to achieve the above purpose, the utility model is implemented by the following technical solutions:

[0005] The utility model discloses an embedded online waste oil discharge facility for a refinery, comprising an embedded waste oil tank, wherein the upper end of the waste oil tank is connected with an inlet pipeline, a pressure pipeline, a venting pipeline, a nitrogen pipeline and a sewage pumping pipeline, the end of the sewage pumping pipeline is arranged at the bottom of the waste oil tank, and a filter net is wrapped at the end of the sewage pumping pipeline, at least one stop valve is arranged on the inlet pipeline, the pressure pipeline, the venting pipeline and the sewage pumping pipeline, two stop valves are arranged on the nitrogen pipeline, the upper end of the inlet pipeline is connected with a funnel, and a filter layer is arranged in the funnel.

[0006] Preferably, a liquid level transmitter is provided in the waste oil tank, the lower end of the liquid level transmitter is close to the bottom of the waste oil tank, and the upper end of the liquid level transmitter extends out of the waste oil tank by at least 300 mm.

[0007] Preferably, the pressure pipeline is connected to an on-site pressure gauge.

[0008] Preferably, the connector specification of the local pressure gauge is: M20 x 1.5M, and the scale range is: 0-1.6MPa.

[0009] Preferably, the liquid level transmitter has a nominal pressure of 2.0 MPa and a nominal diameter of 50 mm.

[0010] Beneficial effects: It can solve the problem of difficulty in cleaning waste oil during equipment operation, switching, and failure, effectively reduce the risk of environmental damage caused by leakage of waste oil, reduce the workload of operators and equipment failure processing time, significantly improve work efficiency, and is conducive to long-term and stable production without being affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model. DETAILED DESCRIPTION

[0012] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.

[0013] like Figure 1 The figure shows a specific embodiment of a buried online waste oil discharge facility for a refinery. The embodiment is a buried online waste oil discharge facility for a refinery, comprising a buried waste oil tank 1, the upper end of which is connected to an inlet pipeline 2, a pressure pipeline 2, a venting pipeline 3, a nitrogen pipeline 4 and a sewage pumping pipeline 5, the end of which is arranged at the bottom of the waste oil tank 1, and a filter screen 6 is wrapped at the end of the sewage pumping pipeline 5, at least one stop valve is provided on the inlet pipeline 2, the pressure pipeline 2, the venting pipeline 3 and the sewage pumping pipeline 5, two stop valves are provided on the nitrogen pipeline 4, the upper end of the inlet pipeline 2 is connected to a funnel 7, and a filter layer 8 is provided in the funnel 7.

[0014] The dirty oil is discharged into the dirty oil tank 1 after filtering impurities through the dirty oil tank 1 buried underground, i.e., the collector. Filters are installed at the inlet and outlet of the dirty oil tank 1. The local pressure gauge 10 and the liquid level transmitter 9 monitor the internal state of the dirty oil tank 1. The venting pipeline 3 is used to balance the air pressure and discharge the nitrogen filled in. The low-pressure nitrogen pipeline 4 ensures that the dirty oil enters the dirty oil tank smoothly by pressurizing. This application adopts a double valve and double filter design. The double valve effectively prevents the dirty oil from leaking from the inlet or small pipe. The double filter structure ensures that the dirty oil entering the dirty oil tank has no impurities. Since the internal environment is a wet hydrogen sulfide corrosive environment, stainless steel is preferred.

[0015] In a preferred embodiment, a liquid level transmitter 9 is provided in the waste oil tank 1, the lower end of the liquid level transmitter 9 is close to the bottom of the waste oil tank 1, and the upper end of the liquid level transmitter 9 extends at least 300mm outside the waste oil tank 1. The nominal pressure of the liquid level transmitter 9 is 2.0MPa, and the nominal diameter is 50mm.

[0016] In a preferred embodiment, the pressure pipeline 2 is connected with a local pressure gauge 10. The connector specification of the local pressure gauge 10 is: M20 x 1.5M, and the scale range is: 0-1.6MPa.

[0017] Finally, it should be noted that the present invention is not limited to the above embodiments, and there are many variations. All variations that can be directly derived or associated with the content disclosed by ordinary technicians in this field should be considered as the protection scope of the present invention.

Claims

1. A buried online waste oil discharge facility for a refinery, characterized by: The invention comprises an embedded waste oil tank (1), wherein the upper end of the waste oil tank (1) is connected to an inlet pipeline (2), a pressure pipeline, a venting pipeline (3), a nitrogen pipeline (4) and a sewage extraction pipeline (5), the end of the sewage extraction pipeline (5) is arranged at the bottom of the waste oil tank (1), and a filter net (6) is wrapped around the end of the sewage extraction pipeline (5), the inlet pipeline (2), the pressure pipeline, the venting pipeline (3) and the sewage extraction pipeline (5) are each provided with at least one stop valve, the nitrogen pipeline (4) is provided with two stop valves, the upper end of the inlet pipeline (2) is connected to a funnel (7), and a filter layer (8) is provided in the funnel (7).

2. The buried online waste oil discharge facility for refineries according to claim 1, characterized in that: A liquid level transmitter (9) is arranged in the waste oil tank (1), the lower end of the liquid level transmitter (9) is close to the bottom of the waste oil tank (1), and the upper end of the liquid level transmitter (9) extends out of the waste oil tank (1) by at least 300 mm.

3. The buried online waste oil discharge facility for refineries according to claim 1, characterized in that: The pressure pipeline is connected to an on-site pressure gauge (10).

4. The buried online waste oil discharge facility for refineries according to claim 3 is characterized by: The connector specification of the local pressure gauge (10) is: M20 x 1.5, and the scale range is: 0-1.6MPa.

5. The buried online waste oil discharge facility for a refinery according to claim 2, characterized in that: The nominal pressure of the liquid level transmitter (9) is 2.0 MPa and the nominal diameter is 50 mm.

Images