CN212655511U - Vacuum water-cutting demulsification oil-water separation device - Google Patents
Vacuum water-cutting demulsification oil-water separation device Download PDFInfo
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- CN212655511U CN212655511U CN202020417804.2U CN202020417804U CN212655511U CN 212655511 U CN212655511 U CN 212655511U CN 202020417804 U CN202020417804 U CN 202020417804U CN 212655511 U CN212655511 U CN 212655511U
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Abstract
The invention relates to a vacuum water-cutting demulsification oil-water separation device which comprises a water inlet pipe system, a vacuum water-cutting oil-water polymerization separator, a demulsifier adding device, an oil discharge pump, an oil delivery pipe system, a heat tracing system, a water outlet pipe system, an emptying pipe system, a public base and an automatic control box, wherein the water inlet pipe system is arranged at one side of the vacuum water-cutting oil-water polymerization separator, the demulsifier adding device is connected with the vacuum water-cutting oil-water polymerization separator through the water inlet pipe system, the heat tracing system is arranged at the other side of the vacuum water-cutting oil-water polymerization separator, the automatic control box is arranged in the vacuum water-cutting oil-water polymerization separator, the emptying pipe system is arranged at the bottom of the vacuum water-cutting oil-water polymerization separator, and the water outlet pipe system is led out of. According to the technical scheme, the vacuum automatic water cutting is realized, and meanwhile, the emulsion breaking, separation and collection of emulsified oil in the cut water can be realized, so that the oil-water separation efficiency is greatly improved, and the oil waste and the environmental pollution are reduced.
Description
Technical Field
The invention relates to an oil-water separation device, in particular to a vacuum water-cutting demulsification oil-water separation device, and belongs to the technical field of water-cutting and oil-removing equipment of petrochemical oil storage tanks.
Background
In the petrochemical industry and oil storage and transportation industry, certain moisture inevitably exists at the bottom of various oil storage tanks, and when the water content of the oil is too high due to untimely water cutting of the oil storage tank, the production safety and the product quality are affected. For example, in the refining process of petroleum, because the water content in the crude oil is higher, the tower flushing accident is easy to cause; the quality of oil products can be affected by the excessive water content of the finished oil. Therefore, in order to ensure the production safety and the quality of oil products, the water at the bottom of each oil product storage tank must be timely drained, which is commonly referred to as water draining of the oil product storage tank. At present, the manual water cutting method adopted in the industry is that when the water and oil are cut by visual inspection of an operator on site, the valve is manually closed. The operation is completely dependent on the experience of operators, accidents such as untimely water cutting, oil carrying and oil leakage are easily caused by negligence of the operators, and the operation safety of equipment is seriously influenced; and the discharged water still contains a large amount of emulsified oil, which causes oil waste and environmental pollution. With the rapid development of the petroleum and petrochemical industries, the requirements on the production technology level and the production automation are higher and higher, and the improvement of the comprehensive benefits of enterprises is greatly influenced by the low-level manual operation. Therefore, a new solution to solve the above technical problems is urgently needed.
Disclosure of Invention
The invention provides a vacuum water-cutting demulsification oil-water separation device aiming at the problems in the prior art, and the technical scheme replaces the manual water-cutting mode of various oil product storage tanks, realizes automatic vacuum water cutting, and simultaneously can realize demulsification, separation and collection of emulsified oil in cut-off drainage water, greatly improves the efficiency of oil-water separation, and reduces oil product waste and environmental pollution.
In order to achieve the purpose, the technical scheme of the invention is that the vacuum water-cutting demulsification oil-water separation device is characterized by comprising a water inlet pipe system, a vacuum water-cutting oil-water polymerization separator, a demulsifier adding device, an oil discharge pump, an oil conveying pipe system, a heat tracing system, a water outlet pipe system, an emptying pipe system, a common base and an automatic control box, wherein the water inlet pipe system is arranged at one side of the vacuum water-cutting oil-water polymerization separator, the demulsifier adding device is connected with the vacuum water-cutting oil-water polymerization separator through the water inlet pipe system, the heat tracing system is arranged at the other side of the vacuum water-cutting oil-water polymerization separator, the automatic control box is arranged in the vacuum water-cutting oil-water polymerization separator, the emptying pipe system is arranged at the bottom of the vacuum water-cutting oil-water polymerization separator, the water outlet pipe system is led out from, the oil discharge pump and the demulsifier feeding device are arranged on the public base.
As an improvement of the invention, the water inlet pipe system comprises a pressure display instrument, a valve and a pipeline mixer.
As an improvement of the invention, a vacuum siphon breaking valve, a three-phase hydraulic cyclone separating element, a coarse-grained polymerizing element, a corrugated plate polymerizing element, an automatic floating oil collecting and discharging element and a cutting and draining automatic closing valve are sequentially arranged in the vacuum water-cutting demulsification oil-water separating device from top to bottom in the height direction, a water inlet pipeline and a water outlet pipeline are arranged outside the vacuum water-cutting oil-water polymerizing separator, wherein the vacuum siphon breaking valve is simple in structure, and when an inner cavity of the vacuum water-cutting demulsification oil-water separating device reaches a certain vacuum degree to generate vacuum negative pressure, the valve is pushed to be gradually opened to supplement air. The valve is restored by the thrust of the spring, and the sealing effect is good. The water inlet pipeline extends into the three-phase hydraulic cyclone separation element; the three-phase hydraulic cyclone separation element and the corrugated plate polymerization element are respectively communicated with an automatic floating oil collecting and discharging element extending into the tank body of the combined device and an external oil discharging pipeline.
As an improvement of the invention, the demulsifier adding device in the vacuum water-cutting demulsification oil-water separation device comprises an automatic dispensing machine, a dissolving medicine box, a stirrer, a medicine storage box, a liquid level meter, a medicine adding pump and a medicine adding pipeline system, wherein the dissolving medicine box and the medicine storage box are provided with the liquid level meter with continuous output and high-low limit switch output, the medicine adding pump is a volume metering pump which is used for one by one, the adjusting range is 0-100%, the precision is +/-1%, the medicine adding pump is interlocked with the liquid level of the medicine storage box, the low-position automatic pump stopping is realized, and the medicine adding pipeline system is provided with an inlet and outlet block valve, a check valve, a safety valve, a voltage stabilizer and a pipeline filter. The automatic dispensing machine can directly dose powder medicament and water to automatically prepare solution according to proportion (adjustable). The materials of the dissolving box, the stirring paddle of the stirrer, the medicine storage box and the corresponding piping system resist the corrosion of the added medicines. Therefore, the service life of the equipment components is prolonged, the continuous operation time of the equipment is increased, and the cost of daily operation and maintenance of enterprises is saved.
As an improvement of the invention, the three-phase hydraulic cyclone separation element in the vacuum water-cutting oil-water polymerization separator adopts a double-cone structural form, is made of stainless steel and is divided into a top oil spilling pipe joint, a liquid inlet pipe joint, a cyclone cavity straight pipe section, a cyclone cavity upper conical pipe section, a cyclone cavity lower conical pipe section and a bottom heavy phase liquid and solid impurity outlet pipe joint from top to bottom. When entering the double-cone structure cyclone tube with specific taper, the liquid inlet medium is slowly accelerated without generating turbulent flow, and the centrifugal separation is carried out in a state close to laminar flow, so that the separation effect is better. By adopting the design, the oil removal treatment precision of cutting and draining water of various oil storage tanks can be effectively improved.
As an improvement of the invention, the oil discharge pump in the vacuum water-cutting demulsification oil-water separation device is a displacement pump with good corrosion resistance.
As an improvement of the invention, a heat tracing system in the vacuum water-cutting demulsification oil-water separation device is electric heat tracing or steam heat tracing.
As an improvement of the invention, the vacuum water-cutting demulsification oil-water separation device can be wholly or partially assembled into a movable skid-mounted device, and has the advantages of compact structure, space saving, convenience for mobile operation and cost saving.
Compared with the prior art, the invention has the following advantages: 1) by adopting the vacuum water-cutting demulsification oil-water separation device in the technical scheme, the demulsifier is added into the water-cutting drainage from the large, medium and small oil storage tanks, the water-cutting drainage is fully mixed in the pipeline mixer in the device, and then the water-cutting drainage is subjected to polymerization treatment on oil in the water-cutting drainage in the vacuum water-cutting oil-water polymerization separator, so that automatic water cutting during drainage of various oil storage tanks can be realized, oil-water separation can be more effectively realized, the equipment can be suitable for most various oil storage tanks, and has good adaptability and applicability; 2) according to the vacuum water-cutting demulsification oil-water separation device in the scheme, the vacuum water-cutting oil-water polymerization separator and the demulsifier feeding device are matched with each other, so that the high-precision treatment of oil in the automatic water-cutting drainage and the water-cutting drainage of the light and heavy oil product storage tank is realized, and more oil in the collected water-cutting drainage can be recycled; 3) the device has the advantages of reasonable design, simple structure, strong operability and the like. The device is used in the petroleum and chemical industry, replaces the manual water cutting mode of the oil storage tank, realizes automatic water cutting, greatly reduces the labor intensity of operation work and eliminates the potential safety hazard phenomenon of hydrogen sulfide poisoning when water is cut manually, greatly improves the efficiency of oil-water separation, and obviously reduces resources, labor cost loss and environmental pollution in the production process of enterprises.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a vacuum water-cutting oil-water separator;
FIG. 3 is a schematic structural view of a demulsifier feeding apparatus;
in the figure: 1-water inlet pipe system, 2-vacuum water cutting oil-water polymerization separator, 3-demulsifier feeding device, 4-oil discharge pump, 5-oil conveying pipe system, 6-heat tracing system, 7-water outlet pipe system, 8-air discharge pipe system, 9-common base, 10-automatic control box, 1-1 pressure display instrument, 1-2 valves, 1-3 pipeline mixer, 2-1 vacuum siphon break valve, 2-2 three-phase hydraulic cyclone separation element, 2-3 coarse grain polymerization element, 2-4 corrugated plate polymerization element, 2-5 floating oil automatic collection and discharge element, 2-6 cutting water discharge automatic closing valve, 2-7 water inlet pipe, 2-8 water outlet pipe, 3-1 automatic medicine dispensing machine, 3-2 dissolved medicine box, 3-3 stirrer, 3-4 medicine storage box, 3-5 liquid level meter, 3-6 medicine feeding pump and 3-7 medicine feeding pipe system.
The specific implementation mode is as follows:
for the purpose of enhancing an understanding of the present invention, the present embodiment will be described in detail below with reference to the accompanying drawings.
Example 1: referring to fig. 1-3, a vacuum water-cutting demulsification oil-water separation device comprises a water inlet pipe system 1, a vacuum water-cutting oil-water polymerization separator 2, a demulsifier adding device 3, an oil discharge pump 4, an oil conveying pipe system 5, a heat tracing system 6, a water outlet pipe system 7, a vent pipe system 8, a common base 9 and an automatic control box 10, wherein the water inlet pipe system 1 is arranged at one side of the vacuum water-cutting oil-water polymerization separator 2, the demulsifier adding device 3 is connected with the vacuum water-cutting oil-water polymerization separator 2 through the water inlet pipe system, the heat tracing system 6 is arranged at the other side of the vacuum water-cutting oil-water polymerization separator 2, the automatic control box 10 is arranged in the vacuum water-cutting oil-water polymerization separator 2, the vent pipe system 8 is arranged at the bottom of the vacuum water-cutting oil-water polymerization separator 2, the water outlet pipe system 7 is led out from the vacuum water-cutting oil-water polymerization separator 2, the water outlet pipe is led out from the upper part of, the oil extraction pump and the demulsifier adding device 3 are arranged on a common base 9, the water inlet pipe system comprises a pressure display instrument 1-1, a valve 1-2 and a pipeline mixer 1-3, the vacuum water-cutting demulsification oil-water separation device is internally provided with a vacuum siphon breaking valve 2-1, a three-phase hydraulic cyclone separation element 2-2, a coarse granulation polymerization element 2-3, a corrugated plate polymerization element 2-4, a floating oil automatic collection and oil discharge element 2-5 and a cutting drainage automatic closing valve 2-6 in sequence from top to bottom in the height direction, the outside of the tank body of the vacuum water-cutting oil-water separation device is provided with a water inlet pipe 2-7 and a water outlet pipe 2-8, wherein the water inlet pipe 2-7 extends into the three-phase hydraulic cyclone separation element 2-2; the three-phase hydraulic cyclone separation element and the corrugated plate polymerization element are respectively communicated with an automatic floating oil collecting and discharging element extending into the tank body of the combined device and an external oil discharging pipeline. The demulsifier feeding device 3 in the vacuum water-cutting demulsification oil-water separation device comprises an automatic dispensing machine 3-1, a medicine dissolving tank 3-2, a stirrer 3-3, a medicine storage tank 3-4, a liquid level meter 3-5, a medicine feeding pump 3-6 and a medicine feeding pipe system 3-7, wherein the liquid level meter 3-5 with continuous output and high-low limit switch output is arranged on the medicine dissolving tank 3-2 and the medicine storage tank 3-4, the medicine feeding pump 3-6 is a volumetric metering pump which is used for one by one, has an adjusting range of 0-100% and a precision of +/-1%, is interlocked with the liquid level of the medicine storage tank, and is automatically stopped at a low position, and the medicine feeding pipe system is provided with an inlet and outlet block valve, a check valve, a safety valve, a pressure stabilizer and a pipeline filter. The automatic dispensing machine can directly dose powder medicament and water to automatically prepare solution according to proportion (adjustable). The materials of the dissolving medicine box 3-2, the stirring paddle of the stirrer 3-3, the medicine storage box 3-4 and corresponding pipe systems are resistant to corrosion of added medicines, the three-phase hydraulic cyclone separation element 2-2 in the vacuum water-cutting oil-water polymerization separator adopts a double-cone structural form, is made of stainless steel materials and is divided into a top oil overflow pipe joint, a liquid inlet pipe joint, a cyclone cavity straight pipe section, a cyclone cavity upper cone pipe section, a cyclone cavity lower cone pipe section and a bottom heavy phase liquid and solid impurity outlet pipe joint from top to bottom. When entering the double-cone structure cyclone tube with specific taper, the liquid inlet medium is slowly accelerated without generating turbulent flow, and the centrifugal separation is carried out in a state close to laminar flow, so that the separation effect is better. By adopting the design, the oil removal treatment precision of cutting drainage water for various oil storage tanks can be effectively improved, the oil discharge pump in the vacuum water cutting demulsification oil-water separation device is a positive displacement pump with good corrosion resistance, the heat tracing system in the vacuum water cutting demulsification oil-water separation device is electric heat tracing or steam heat tracing, and the vacuum water cutting demulsification oil-water separation device can be integrally or locally assembled into a movable skid-mounted device, so that the vacuum water cutting demulsification oil-water separation device is convenient to use.
The working principle is as follows: referring to fig. 1-3, a vacuum water-cutting demulsification oil-water separation device is disclosed, which can automatically open a vacuum siphon drainage pipeline system connecting valve between a large and medium oil storage tank and a vacuum water-cutting oil-water separator device when the oily wastewater (which contains a certain amount of emulsified oil at the oil-water interface and may be discharged with water) settled in the large and medium oil storage tank needs to be cut off and drained, and the oil storage tank is vacuum siphoned to cut off and drain water by using the difference of liquid level, oil and water density. The device is internally provided with a vacuum breaker valve which can be automatically opened and closed by utilizing the oil-water density difference and an automatic cut-off valve for drainage. When water is cut and drained, a demulsifier is added by a demulsifier adding device to demulsify the oily wastewater, and a vacuum water-cutting oil-water polymerization separator arranged in the device can effectively polymerize and separate emulsified oil contained in the cut and drained water, so that most of the floated oil and the dispersed oil in the cut and drained water are polymerized, separated from water and recycled. The structural style of equipment is horizontal or vertical sled dress, and the volume size will carry out reasonable effective design according to oil storage tank size and oil moisture content. An oil discharge pump with explosion-proof performance, a heat tracing system, a demulsification dosing device, a small PLC program control box, a pressure gauge (vacuum gauge), a temperature and flow display instrument and the like are arranged on the equipment and the public base, and full-automatic operation can be realized as required. No manual operation is needed. All components and parts inside the equipment are made of stainless steel materials and can be continuously used for a long period.
It should be noted that the above-mentioned embodiments illustrate only preferred embodiments of the invention, and are not intended to limit the scope of the invention, so that the appended claims should be construed broadly and in a manner consistent with the scope of the invention.
Claims (8)
1. A vacuum water-cutting demulsification oil-water separation device is characterized by comprising a water inlet pipe system, a vacuum water-cutting oil-water polymerization separator, a demulsifier adding device, an oil discharge pump, an oil conveying pipe system, a heat tracing system, a water outlet pipe system, an emptying pipe system, a public base and an automatic control box, wherein the water inlet pipe system is arranged at one side of the vacuum water-cutting oil-water polymerization separator, the demulsifier adding device is connected with the vacuum water-cutting oil-water polymerization separator through the water inlet pipe system, the heat tracing system is arranged at the other side of the vacuum water-cutting oil-water polymerization separator, the automatic control box is arranged in the vacuum water-cutting oil-water polymerization separator, the emptying pipe system is arranged at the bottom of the vacuum water-cutting oil-water polymerization separator, the water outlet pipe system is led out from the upper part of the vacuum water-cutting oil-, the oil discharge pump and the demulsifier adding device are arranged on the public base in a bolt connection or welding way.
2. The vacuum water-cutting emulsion-breaking oil-water separation device as claimed in claim 1, wherein the water inlet pipe system comprises a pressure display instrument, a valve and a pipeline mixer.
3. The vacuum water-cutting emulsion-breaking oil-water separation device according to claim 2, wherein a vacuum siphon breaker, a three-phase hydraulic cyclone separation element, a coarse-grained polymerization element, a corrugated plate polymerization element, an automatic floating oil collection and discharge element and a water-cutting drainage automatic closing valve are sequentially arranged in the vacuum water-cutting emulsion-breaking oil-water separation device from top to bottom in the height direction, and a water inlet pipeline and a water outlet pipeline are arranged outside the vacuum water-cutting oil-water polymerization separation device, wherein the water inlet pipeline extends to the interior of the three-phase hydraulic cyclone separation element; the three-phase hydraulic cyclone separation element and the corrugated plate polymerization element are respectively communicated with an automatic floating oil collecting and discharging element extending into the tank body of the combined device and an external oil discharging pipeline.
4. The vacuum water-cutting emulsion-breaking oil-water separation device according to claim 3, wherein the emulsion breaker feeding device inside the vacuum water-cutting emulsion-breaking oil-water separation device comprises an automatic dispensing machine, a dissolving tank, a stirrer, a medicine storage tank, a liquid level meter, a feeding pump and a feeding pipeline system, wherein the dissolving tank and the medicine storage tank are provided with the liquid level meter with continuous output and high-low limit switch output, the feeding pump is a positive displacement metering pump which is used for one time and spare time, has an adjusting range of 0-100 percent and a precision of +/-1 percent, is linked with the liquid level of the medicine storage tank, is automatically stopped at a low position, and is provided with an inlet and outlet block valve, a check valve, a safety valve, a voltage stabilizer and a pipeline filter.
5. The vacuum water-cutting emulsion-breaking oil-water separation device as claimed in claim 4, wherein the three-phase hydraulic cyclone separation element inside the vacuum water-cutting oil-water polymerization separator adopts a double-cone structure, is made of stainless steel, and is divided into a top oil-spilling pipe joint, a liquid inlet pipe joint, a cyclone cavity straight pipe section, a cyclone cavity upper cone pipe section, a cyclone cavity lower cone pipe section, and a bottom heavy phase liquid and solid impurity outlet pipe joint from top to bottom.
6. The vacuum water-cutting emulsion-breaking oil-water separation device as claimed in claim 5, wherein an oil discharge pump inside the vacuum water-cutting emulsion-breaking oil-water separation device is a positive displacement pump with good corrosion resistance.
7. The vacuum water-cutting demulsification oil-water separation device as claimed in claim 6, wherein a heat tracing system inside the vacuum water-cutting demulsification oil-water separation device is electric heat tracing or steam heat tracing.
8. The vacuum water-cutting emulsion-breaking oil-water separation device as claimed in claim 7, wherein the vacuum water-cutting emulsion-breaking oil-water separation device can be wholly or partially assembled into a mobile skid-mounted device.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111252852A (en) * | 2020-03-27 | 2020-06-09 | 江苏中嘉华新环保科技有限公司 | Vacuum water-cutting demulsification oil-water separation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111252852A (en) * | 2020-03-27 | 2020-06-09 | 江苏中嘉华新环保科技有限公司 | Vacuum water-cutting demulsification oil-water separation device |
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