Closed treatment system for waste oil

Abstract

The utility model provides a closed waste oil treatment system which comprises a funnel, a quick-opening blind plate, a first valve and a purging pipeline, and the bottom of the funnel is connected with an underground header pipe for discharging waste oil; the quick-opening blind plate is arranged at the top of the funnel in a sealing manner through an arranged sealing ring; the first valve is arranged at the bottom of the funnel below the quick-opening blind plate; the purging pipeline is communicated with the horizontal buffer solution bag, a torch system is arranged at the tail end of the purging pipeline, and a first valve is also arranged on a liquid outlet pipeline at the bottom of the horizontal buffer solution bag. The purging pipeline comprises an air inlet pipeline and an air outlet pipeline which are arranged on the two sides of the horizontal buffer solution bag respectively, and second valves are arranged on the air inlet pipeline and the air outlet pipeline respectively. According to the utility model, the quick-opening blind plate is used for sealing, so that volatile organic compounds (VOCs) are prevented from escaping and discharging; waste oil and waste gas are purged to a downstream torch system by inert gas through a purging pipeline, so that no residue is ensured, and the problem of unorganized emission of volatile organic compounds (VOCs) in the waste oil collection and treatment process is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste oil treatment, in particular to a closed waste oil treatment system. Background Art

[0002] At present, the traditional waste oil collection facility in petrochemical plants is a single collection facility with no seals at the top cover and no pressure-bearing capacity. After the waste oil is collected, the residual waste oil inside evaporates into gas, resulting in the problem of unorganized emission of volatile organic compounds (VOCs), which pollutes the environment.

[0003] Therefore, there is a need for a collection and treatment facility that can promptly remove residual waste oil and waste gas during the collection of toxic, harmful and volatile waste oil, and can be completely sealed when not in use to eliminate unorganized VOCs emissions, so as to achieve safety, environmental protection, strong reliability, convenient and fast operation, and wide applicability.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the utility model, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In view of the shortcomings of the prior art mentioned above, the utility model provides a closed waste oil treatment system, which is sealed by a quick-opening blind plate to prevent the escape and emission of volatile organic compounds (VOCs); the waste oil and waste gas are purged with inert gas to the downstream flare system through a purge pipeline to ensure that there is no residue, so as to solve the problem of unorganized emission of volatile organic compounds (VOCs) in the waste oil collection and treatment process.

[0006] The utility model provides a closed waste oil treatment system, comprising a funnel, a quick-opening blind plate and a first valve, wherein the bottom of the funnel is connected with an underground main pipe for discharging waste oil; the quick-opening blind plate is installed on the top of the funnel, and the top of the funnel is sealed and closed by an arranged sealing ring; the first valve is installed on the bottom of the funnel below the quick-opening blind plate.

[0007] In one embodiment of the utility model, a horizontal buffer solution bag is also included. The horizontal buffer solution bag is arranged below the funnel. The funnel is connected to the top of the horizontal buffer solution bag through a first valve. The bottom of the horizontal buffer solution bag is connected to the underground main pipe through an installed liquid outlet pipe.

[0008] In one embodiment of the utility model, a purge pipeline is also included, the purge pipeline is connected to the horizontal buffer bag, a flare system is arranged at the end of the purge pipeline, and a first valve is also installed on the liquid outlet pipe at the bottom of the horizontal buffer bag.

[0009] In an embodiment of the present invention, the first valve is configured as a wafer-type ball valve.

[0010] In one embodiment of the present invention, the pipeline of the purge line connected to the horizontal buffer bag is higher than the horizontal buffer bag, and the port of the purge line is inclined relative to the side of the connected horizontal buffer bag.

[0011] In one embodiment of the present invention, the purge pipeline includes an air inlet pipe and an air outlet pipe respectively installed on both sides of the horizontal buffer bag, and the air inlet pipe and the air outlet pipe are respectively installed with a second valve.

[0012] In one embodiment of the present invention, a one-way valve is further included. The one-way valve is installed on the air inlet pipe and the air outlet pipe between the second valve and the horizontal buffer bag.

[0013] In an embodiment of the present invention, the second valve is configured as a gate valve.

[0014] In one embodiment of the utility model, a sight glass is further included, which is installed on the air inlet pipe between the one-way valve and the horizontal buffer bag.

[0015] In one embodiment of the present invention, a pressure gauge is further included. The pressure gauge is installed on the air outlet pipe between the one-way valve and the horizontal buffer bag.

[0016] The beneficial effects of the utility model are as follows: through the provided closed waste oil treatment system, closed treatment of waste oil can be achieved, which can withstand pressure. There is no unorganized emission of volatile organic compounds (VOCs) during the waste oil collection process. There is no need to reverse the waste oil after collection. The residual waste gas is immediately blown to the flare system for direct combustion. The entire collection and treatment process is safe and environmentally friendly, easy to operate, highly reliable and widely applicable.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present utility model, and together with the specification, are used to explain the principles of the present utility model. Obviously, the drawings described below are only some embodiments of the present utility model, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0019] Figure 1 It is a structural schematic diagram of the closed waste oil treatment system of the utility model.

[0020] In the figure: 1, funnel; 10, underground main pipe; 2, quick-opening blind plate; 3, first valve; 4, horizontal buffer bag; 5, liquid outlet pipe; 61, air inlet pipe; 610, sight glass; 62, air outlet pipe; 620, pressure gauge; 7, second valve; 8, one-way valve. DETAILED DESCRIPTION

[0021] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present invention are intended to describe specific implementations, rather than to limit the scope of protection of the present invention.

[0022] See also Figure 1 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any structural modification, change in proportional relationship, or adjustment of size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as position and quantitative relationship quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the utility model without substantial changes in the technical content.

[0023] See also Figure 1 The utility model provides a closed waste oil treatment system, including a funnel 1, a quick-opening blind plate 2 and a first valve 3. The bottom of the funnel 1 is connected to an underground main pipe 10 for discharging waste oil; the quick-opening blind plate 2 is installed on the top of the funnel 1, and the top of the funnel 1 is sealed and closed by a set sealing ring; the first valve 3 is installed at the bottom of the funnel 1 below the quick-opening blind plate 2.

[0024] Specifically, in the embodiment of the utility model, by utilizing the quick-opening blind plate 2, which is convenient and quick to open and close, and cooperating with the sealing ring provided at the top cover plate thereof, the funnel 1 is isolated from the external atmosphere, and has a certain pressure-bearing capacity and high reliability. Compared with the traditional liquid-sealed groove-type sealing cover, the liquid-sealed groove-type sealing cover is greatly affected by the external temperature, weather, external force, etc., and the liquid-sealed layer is lost due to liquid volatilization and freezing, and is easy to fail. Once the liquid-sealed layer is destroyed, the sealing effect is lost; in addition, when there is a certain pressure in the collection tank, the liquid-sealed layer is also easy to fail, resulting in gas leakage. Therefore, the quick-opening blind plate 2 is more reliable than the traditional liquid-sealed groove-type sealing cover, is not affected by external factors, and can completely prevent the emission of volatile organic compounds (VOCs).

[0025] Furthermore, the first valve 3 installed at the bottom of the funnel 1 can be used to isolate the underground main pipe 10 from the atmosphere inside the funnel 1, so as to prevent the volatile organic compounds (VOCs) in the underground main pipe 10 from escaping to the outside through the funnel 1 during the process of pouring waste oil into the funnel 1. In this way, when pouring waste oil, the quick-opening blind plate 2 is in an open state, and the first valve 3 is in a closed state. When the waste oil in the funnel 1 is sufficient or the waste oil is poured once, the quick-opening blind plate 2 is closed and then the first valve 3 is opened. Subsequently, when the waste oil needs to be poured again, the first valve 3 is closed and then the quick-opening blind plate 2 is opened, so as to avoid the emission of volatile organic compounds (VOCs) in the underground main pipe 10 during the process of pouring waste oil.

[0026] Furthermore, it also includes a horizontal buffer bag 4, which is installed below the funnel 1. The funnel 1 is connected to the top of the horizontal buffer bag 4 through a first valve 3, and the bottom of the horizontal buffer bag 4 is connected to the underground main pipe 10 through an installed liquid outlet pipe 5.

[0027] Specifically, the horizontal buffer bag 4 is used for buffering and storing waste oil, and the horizontal structure provides a larger gas phase space, which is conducive to oil discharge. The first valve 3 located at the top funnel 1 of the buffer bag is used to cut off the external pipeline to ensure that the interior of the horizontal buffer bag 4 is airtight.

[0028] See also Figure 1 In one embodiment, a purge line is further included, the purge line is connected to the horizontal buffer bag 4, a flare system is provided at the end of the purge line, and a first valve 3 is also installed on the liquid outlet pipe 5 at the bottom of the horizontal buffer bag 4.

[0029] Specifically, the waste oil and waste gas remaining in the horizontal buffer bag 4 are purged to the downstream flare system with inert gas through the provided purging pipeline, ensuring that there is no residual waste oil and waste gas in the horizontal buffer bag 4. In this way, compared with other situations of detecting residual waste oil and waste gas in the horizontal buffer bag 4, such as setting an oxygen detector, it is safer to use inert gas purging, and the explosion hazard caused by the accumulation of oil and gas in a closed space for a long time is completely avoided. Compared with the U-tube installed with a solid absorbent, the absorption capacity of the absorbent is limited, and it will fail after absorption saturation, and the oil and gas will still evaporate into the atmosphere. In the embodiment of the utility model, in conjunction with the two first valves 3 respectively installed on the top funnel 1 of the buffer bag and the bottom liquid outlet pipe 5, the waste oil and waste gas are purged to the flare system under completely closed conditions, without the possibility of leakage, and are directly burned after being purged to the flare, without secondary pollution, and the entire treatment process is safe and reliable.

[0030] Furthermore, the first valve 3 is configured as a wafer-type ball valve. Specifically, compared with traditional valves, the wafer-type ball valve has a shorter switch stroke and is easy to operate; in addition, the opening between the flanges of the wafer-type ball valve is also shorter, which reduces the overall height of the facility, and the height from the ground is less than 1 meter. The operator does not need to use a climbing platform, but only needs to lift the waste oil to a lower height to dump and collect it, which reduces the workload of the operator.

[0031] Furthermore, the pipeline of the purge line connected to the horizontal buffer bag 4 is higher than the horizontal buffer bag 4, and the port of the purge line is inclined relative to the side of the connected horizontal buffer bag 4. In this way, the waste oil of the horizontal buffer bag 4 is prevented from being retained in the pipe of the adjacent purge line during the process of dumping the waste oil. Similarly, by arranging the port of the purge line connected to the horizontal buffer bag 4 at an angle, the gas entering from the purge line can have a better impact on the inner wall of the horizontal buffer bag 4 compared to the method of arranging the purge line in parallel, so as to facilitate the cleaning of the waste oil attached to the inner wall of the horizontal buffer bag 4 during the purge process. Furthermore, the port of the purge line can be tilted toward the bottom of the horizontal buffer bag 4, so that the waste oil that is easily retained on the bottom wall of the horizontal buffer bag 4 can be more easily cleaned by the airflow of the purge line.

[0032] See also Figure 1 In one embodiment, the purge pipeline includes an air inlet pipe 61 and an air outlet pipe 62 respectively installed on both sides of the horizontal buffer bag 4, and a second valve 7 is respectively installed on the air inlet pipe 61 and the air outlet pipe 62. The second valve 7 is set as a gate valve.

[0033] Specifically, the second valve 7 respectively arranged on the air inlet pipe 61 and the air outlet pipe 62 is used to maintain the isolation between the purge pipeline and the horizontal buffer bag 4 during the waste oil dumping process, and the use and shutdown of the inert gas used for purge is controlled by the gate valve on the purge pipeline. In this way, a gate valve with a simple structure can be selected as the second valve 7.

[0034] Furthermore, it also includes a one-way valve 8, which is installed on the air inlet pipe 61 and the air outlet pipe 62 between the second valve 7 and the horizontal buffer bag 4. Specifically, during the operation of the purge pipeline, the purge gas entering the horizontal buffer bag 4 is mixed with waste oil and waste gas. In order to prevent the mixed waste gas from polluting the clean part of the purge pipeline, the one-way valve 8 is arranged on the air inlet pipe 61 and the air outlet pipe 62 respectively to prevent the gas in the part where the purge pipeline is connected to the horizontal buffer bag 4 from flowing in reverse.

[0035] Furthermore, it also includes a sight glass 610 and a pressure gauge 620. The sight glass 610 is installed on the air inlet pipe 61 between the one-way valve 8 and the horizontal buffer bag 4. The pressure gauge 620 is installed on the air outlet pipe 62 between the one-way valve 8 and the horizontal buffer bag 4. It is used to monitor the flow of the medium inside the pipeline.

[0036] Specifically, in the facility of the closed waste oil treatment system in the embodiment of the utility model, in the initial state, the two wafer-type ball valves, the air inlet gate valve, and the air outlet gate valve are all in a closed state. When in use, first confirm that the pressure of the pressure gauge 620 is zero, open the two wafer-type ball valves, open the quick-opening blind plate 2, and guide the waste oil into the funnel 1. Under the action of gravity, the waste oil flows along the funnel 1 to the horizontal buffer bag 4, and then flows through the liquid outlet pipe 5 to the underground main pipe 10. After the material is poured, close the quick-opening blind plate 2, close the two clamp-type ball valves, isolate the horizontal buffer bag 4, open the air inlet gate valve, confirm through the pressure gauge 620 and the sight glass 610 that the nitrogen has flowed into the air inlet pipe 61 and the air outlet pipe 62 through the air inlet check valve 8, open the air outlet gate valve, purge with nitrogen for 15-30 seconds, purge the residual liquid and waste gas in the horizontal buffer bag 4 through the air outlet check valve 8 and the air outlet gate valve to the downstream flare system, close the air inlet gate valve, confirm through the pressure gauge 620 that there is no pressure in the funnel 1, and then close the air outlet gate valve.

[0037] Similarly, the facilities of the embodiment of the utility model can be integrated with the petrochemical process system as a whole, and arranged in a distributed manner. The waste liquid treatment volume can be adjusted according to needs, and the application is flexible and the applicability is wide.

[0038] In summary, the utility model provides a closed waste oil treatment system, which arranges a quick-opening blind plate on the funnel containing waste oil. Compared with the traditional liquid-sealed groove sealing cover, it is more reliable and not affected by external factors, and can completely prevent the emission of volatile organic compounds (VOCs). Through the set purge pipeline, the residual waste oil and waste gas in the horizontal buffer solution bag are purged to the downstream flare system with inert gas to ensure that there is no residual waste oil and waste gas in the horizontal buffer solution bag.

[0039] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A closed waste oil treatment system, characterized in that: include: A funnel (1), the bottom of which is connected to an underground main pipe (10) for discharging waste oil; A quick-opening blind plate (2), the quick-opening blind plate (2) being mounted on the top of the funnel (1) and sealingly closing the top of the funnel (1) via a sealing ring; A first valve (3), the first valve (3) is installed at the bottom of the funnel (1) below the quick-opening blind plate (2).

2. The closed waste oil treatment system according to claim 1, characterized in that: It also includes a horizontal buffer bag (4), which is installed below the funnel (1). The funnel (1) is connected to the top of the horizontal buffer bag (4) through the first valve (3), and the bottom of the horizontal buffer bag (4) is connected to the underground main pipe (10) through the installed liquid outlet pipe (5).

3. The closed waste oil treatment system according to claim 2, characterized in that: It also includes a purge pipeline, which is connected to the horizontal buffer bag (4), a flare system is provided at the end of the purge pipeline, and the first valve (3) is also installed on the liquid outlet pipe (5) at the bottom of the horizontal buffer bag (4).

4. The closed waste oil treatment system according to claim 3, characterized in that: The first valve (3) is configured as a wafer-type ball valve.

5. The closed waste oil treatment system according to claim 3, characterized in that: The pipeline of the purge line connected to the horizontal buffer bag (4) is higher than the horizontal buffer bag (4), and the port of the purge line is arranged obliquely relative to the side of the connected horizontal buffer bag (4).

6. The closed waste oil treatment system according to claim 5, characterized in that: The purge pipeline comprises an air inlet pipeline (61) and an air outlet pipeline (62) respectively installed on both sides of the horizontal buffer bag (4), and a second valve (7) is respectively installed on the air inlet pipeline (61) and the air outlet pipeline (62).

7. The closed waste oil treatment system according to claim 6, characterized in that: It also includes a one-way valve (8), which is installed on the air inlet pipe (61) and the air outlet pipe (62) between the second valve (7) and the horizontal buffer bag (4).

8. The closed waste oil treatment system according to claim 7, characterized in that: The second valve (7) is configured as a gate valve.

9. The closed waste oil treatment system according to claim 7, characterized in that: It also includes a sight glass (610), which is installed on the air inlet pipe (61) between the one-way valve (8) and the horizontal buffer bag (4).

10. The closed waste oil treatment system according to claim 7, characterized in that: It also includes a pressure gauge (620), which is installed on the air outlet pipe (62) between the one-way valve (8) and the horizontal buffer bag (4).

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