CN212924462U - VOC (volatile organic compounds) reduction treatment device for open sump oil tank - Google Patents
VOC (volatile organic compounds) reduction treatment device for open sump oil tank Download PDFInfo
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- CN212924462U CN212924462U CN202021266301.6U CN202021266301U CN212924462U CN 212924462 U CN212924462 U CN 212924462U CN 202021266301 U CN202021266301 U CN 202021266301U CN 212924462 U CN212924462 U CN 212924462U
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Abstract
The utility model belongs to the technical field of oil exploitation, in particular to an open sump VOC reduction treatment device, which comprises a gasification device, an open sump, a VOC recovery device, a sump oil lift pump and a partition wall; a partition wall is arranged in the open pond and divides the open pond into a storage pond and an oil separation pond; one side of the gasification device is communicated with a feeding pipe, the top of the gasification device is connected with the VOC recovery device through an air outlet pipe, the bottom of the gasification device is connected with a main discharging pipe, the main discharging pipe is connected with two discharging branch pipes, and the two discharging branch pipes are respectively introduced into a storage pool and an oil separation pool; the oil separation tank is connected with the feeding pipe through a return pipe; a sump oil lift pump is arranged on the return pipe; the utility model can realize the flexible switching of VOC reduction of various materials through the arrangement of the feeding pipe, the conveying pipe, the discharging main pipe and the discharging branch pipe; the gasification device with a special structure is adopted for treatment, so that oil gas such as sump oil entering an open pond is not volatilized at normal temperature and normal pressure, and VOC is reduced from the source.
Description
Technical Field
The utility model belongs to the technical field of oil development, concretely relates to uncovered sump oil pond VOC minimizing treatment device.
Background
A large amount of open ponds are inevitably existed in the oil exploitation process, and volatile oil gas, such as oily sewage, sewage waste liquid, oil sludge and the like in each production link are received, volatile organic compounds VOC (volatile organic compounds) are inorganically discharged to the atmosphere, and the total discharge amount of the volatile organic compounds VOC is far more than the requirement of the national standard on the non-methane total hydrocarbon standard limit of 4mg/m 3. Along with the increasing of national regulation of environmental pollution and energy waste in the process of energy exploitation, the control of VOC emission indexes is becoming stricter, energy conservation and emission reduction are one of restrictive indexes which must be completed, and the method is the point of making the construction of resource-saving and environment-friendly cities.
The treatment of the prior open sump oil tank adopts a unified 'closed air extraction' + centralized 'waste gas treatment' process. Air-tight extraction: the glass fiber reinforced plastic is adopted for full-closed design, an elastic oil-resistant rubber sealing door and a transparent glass observation window are attached, a rotary-vane vacuum pump is used for pumping air, and the pumping pressure of the rotary-vane vacuum pump is interlocked with a breather valve. Waste gas treatment: and (4) directly discharging the gas up to the standard after the gas collected by the air pump is subjected to freezing adsorption treatment. The open pool is difficult to realize real sealing, a large amount of air is easy to mix, oil gas mixed with the air is collected in a sealed space, great potential safety hazards exist, and air replacement is particularly needed when the air is required to enter the closed pool for inspection and maintenance; the released oil gas has low pressure, small gas amount and more impurities, and the continuous, efficient and economic operation of the VOC treatment device cannot be realized; because of mixing air, consider safety, so the gas after handling only can be discharged outside, economic benefits loses.
The method is an important link of green enterprise action established in the oil field to clean the production process and is also an inevitable trend of long-term and lasting development of energy.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a utility model aim at overcomes the shortcoming that prior art exists, proposes to design an uncovered sump oil VOC minimizing treatment device for VOC retrieves fail safe nature height, realizes the VOC zero release, reduces environmental pollution.
The utility model provides a technical scheme that its technical problem adopted is:
an open sump VOC reducing treatment device comprises a gasification device, an open sump, a VOC recovery device, a sump lift pump and a partition wall; the open pond is internally provided with a partition wall, the top height of the partition wall is lower than that of the open pond, and the open pond is divided into a storage pond and an oil separation pond by the partition wall for separating oil-containing sewage stored in the open pond and overflowing the dirty oil in the oil-containing sewage to the oil separation pond; one side of the gasification device is communicated with a feeding pipe, the top of the gasification device is connected with the VOC recovery device through an air outlet pipe, the bottom of the gasification device is connected with a main discharging pipe, the main discharging pipe is connected with two discharging branch pipes, and the two discharging branch pipes are respectively introduced into a storage pool and an oil separation pool; the oil separation tank is connected with the feeding pipe through a return pipe; the reflux pipe is provided with a sump oil lifting pump, the sump oil lifting pump is positioned on one side of the open pond, and the inlet pipe is positioned on the other side of the open pond.
Furthermore, the feed pipe is connected with a delivery pipe leading to the storage pool, a bypass valve is arranged on the delivery pipe and used for adjusting the liquid amount entering the gasification device, or materials with nonvolatile VOC directly enter the open pool, so that the process flow is perfected.
Furthermore, the conveying pipe is connected with a discharging branch pipe communicated into the storage pool.
Furthermore, the feeding pipe and the two discharging branch pipes are respectively provided with a control valve, so that the feeding of the feeding pipe and the discharging of the two discharging branch pipes can be controlled conveniently.
Further, the gasification device comprises a body; the body is divided into a heating cavity and a processing cavity by a partition plate; a fire tube and a heating coil are arranged in the heating cavity; the treatment cavity comprises a liquid phase mechanism for flash evaporation of stable materials and a gas phase mechanism for recovery of oil gas in the liquid phase mechanism; the gas phase mechanism is positioned above the liquid phase mechanism and is communicated with the liquid phase mechanism; one end of the heating coil is communicated with the liquid phase mechanism.
Further, the liquid phase mechanism comprises a corrugated baffle, a flash evaporation stabilizing cavity, an overflow weir plate, a liquid collecting cavity and a valve float adjusting valve; the flash evaporation stabilizing cavity is positioned on one side of the partition plate, and the height of the flash evaporation stabilizing cavity is lower than that of the body; the heating coil is communicated with the flash evaporation stabilizing cavity; the corrugated baffle is fixedly arranged on the inner wall of the body, and the lower end of the corrugated baffle extends into the flash evaporation stabilizing cavity; an overflow weir plate is arranged on one side surface of the flash evaporation stabilizing cavity, a liquid collecting cavity is arranged on one side of the overflow weir plate, which is far away from the flash evaporation stabilizing cavity, and the height of the liquid collecting cavity is lower than that of the flash evaporation stabilizing cavity; the bottom of the liquid collecting cavity is connected with the first discharging pipe, one side of the liquid collecting cavity close to the upper end is connected with the second discharging pipe, and the first discharging pipe and the second discharging pipe are connected with the discharging main pipe through a valve float adjusting valve.
Further, the gas phase mechanism comprises an air pumping cylinder, a mist catching net and a rotary vacuum pump; the air pumping cylinder is arranged on the body and is communicated with the cavity above the flash evaporation stabilizing cavity, and the upper end in the air pumping cylinder is provided with a mist catching net; the top of the air pumping cylinder is connected with a pipeline provided with a rotary vacuum pump.
Furthermore, the corrugated baffle is positioned between the partition plate and the gas phase mechanism, so that the oil gas recovery effect is ensured.
Furthermore, the other end of the heating coil penetrates through the bottom of the body, and the end part of the heating coil is a material inlet.
Furthermore, one end of the fire tube is close to the partition plate, and the other end of the fire tube penetrates through the body to be connected with the chimney, so that smoke is discharged from the chimney.
Compared with the prior art, the utility model, have following advantage: the utility model can realize the flexible switching of VOC reduction of various materials through the arrangement of the feeding pipe, the conveying pipe, the discharging main pipe and the discharging branch pipe; the utility model discloses a gasification equipment of special construction handles, makes the sump oil that gets into uncovered pond etc. under the normal atmospheric temperature and pressure state nonvolatile oil gas, VOC minimizing from the source. Breaking the traditional mode of closed collection and centralized treatment of VOC treatment in an open pond; the utility model adopts the principle of stable heating, vacuumizing, negative pressure flash evaporation, so that the dirty oil entering the open pool and the like release oil gas in advance, the open pool stores non-volatile emission VOC under the normal temperature and pressure state, and the VOC is reduced from the source; the method makes up the blank of a large amount of VOC (volatile organic compounds) reduction gasification devices of open sump oil pools in the field of oil exploitation, and the saturated vapor pressure of the sump oil which enters the open sump after being treated by the device reaches 70% of local atmospheric pressure, or the saturated vapor pressure of the sump oil is 1atm when the temperature of pure oil is 70 ℃ and the temperature of oily sewage is 40 ℃; the volatile VOC release rate is 100 percent, and the oil-containing particle size is less than or equal to 100 mu m. The utility model discloses an at oil field popularization and application, can realize getting into the zero release of uncovered pond sump oil VOC.
Drawings
FIG. 1 is a schematic view of the main structure of the present invention;
FIG. 2 is a schematic view of the gasification device of the present invention.
Wherein, 1 fire tube, 2 heating coil pipes, 3 chimneys, 4 ripple baffles, 5 flash evaporation stable chambers, 6 overflow weir plates, 7 liquid collecting chambers, 8 valve float regulating valves, 9 air suction cylinders, 10 mist catching nets, 11 rotary vacuum pumps, 12 bodies, 13 clapboards, 14 first discharging pipes, 15 second discharging pipes, 16 discharging main pipes, 17 material inlets, 18 gasification devices, 19 open ponds, 20 VOC recovery devices, 21 dirty oil lift pumps, 22 clapboards, 23 storage ponds, 24 oil separating ponds, 25 feeding pipes, 26 air outlet pipes, 27 discharging main pipes, 28 discharging branch pipes, 29 return pipes, 30 conveying pipes, 31 bypass valves, 32 control valves.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.
Example 1:
the VOC reduction treatment device of the open sump oil pool comprises a gasification device 18, an open sump 19, a VOC recovery device 20, a sump oil lift pump 21 and a partition wall 22; a partition wall 22 is arranged in the open pond 19, the top height of the partition wall 22 is lower than that of the open pond 19, the open pond 19 is divided into a storage pond 23 and an oil separation pond 24 by the partition wall 22, the storage pond 23 and the oil separation pond 24 are used for isolating oil-containing sewage stored in the open pond 19, and dirty oil in the oil-containing sewage can overflow to the oil separation pond 24; one side of the gasification device 18 is communicated with a feeding pipe 25, the top of the gasification device is connected with a VOC recovery device through an air outlet pipe 26, the bottom of the gasification device is connected with a main discharge pipe 27, the main discharge pipe 27 is connected with two branch discharge pipes 28, and the two branch discharge pipes 28 are respectively introduced into a storage tank 23 and an oil separation tank 24; the oil separation tank 24 is connected with the feeding pipe 25 through a return pipe 29; the return pipe 29 is provided with a sump oil lift pump 21, the sump oil lift pump 21 is positioned on one side of the open pool 19, and the feed pipe 25 is positioned on the other side of the open pool 19.
The feeding pipe 25 of the embodiment is further connected with a conveying pipe 30 leading to the storage tank 23, a bypass valve 31 is arranged on the conveying pipe 30, the bypass valve 31 is used for adjusting the liquid amount entering the gasification device 18, or materials of nonvolatile VOC directly enter the open tank 19, and the process flow is completed.
The feed pipe 30 is connected in this embodiment to a discharge branch 28 which opens into the reservoir 23.
In this embodiment, the feeding pipe 25 and the two discharging branch pipes 28 are respectively provided with a control valve 32, so as to control the feeding of the feeding pipe 25 and the discharging of the two discharging branch pipes 28.
The gasification apparatus 18 of the present embodiment includes a body 12; the inside of the body 12 is divided into a heating cavity and a processing cavity by a partition plate 13; a fire tube 1 and a heating coil 2 are arranged in the heating cavity; the treatment cavity comprises a liquid phase mechanism for flash evaporation of stable materials and a gas phase mechanism for recovery of oil gas in the liquid phase mechanism; the gas phase mechanism is positioned above the liquid phase mechanism and is communicated with the liquid phase mechanism; one end of the heating coil is communicated with the liquid phase mechanism.
The liquid phase mechanism comprises a corrugated baffle 4, a flash evaporation stabilizing cavity 5, an overflow weir plate 6, a liquid collecting cavity 7 and a valve float adjusting valve 8; the flash evaporation stabilizing cavity 5 is positioned on one side of the partition plate 13, and the height of the flash evaporation stabilizing cavity is lower than that of the body 1; the heating coil 2 is communicated with the flash evaporation stabilizing cavity 5; the corrugated baffle 4 is fixedly arranged on the inner wall of the body 1, and the lower end of the corrugated baffle extends into the flash evaporation stabilizing cavity 5; an overflow weir plate 6 is arranged on one side surface of the flash evaporation stabilizing cavity 5, a liquid collecting cavity 7 is arranged on one side of the overflow weir plate 6, which is far away from the flash evaporation stabilizing cavity 5, and the height of the liquid collecting cavity 7 is lower than that of the flash evaporation stabilizing cavity 5; the bottom of the liquid collecting cavity 7 is connected with a first discharging pipe 14, one side, close to the upper end, of the liquid collecting cavity 7 is connected with a second discharging pipe 15, and the first discharging pipe 14 and the second discharging pipe 15 are connected with a discharging main pipe 16 through a valve float adjusting valve 8.
The gas phase mechanism comprises an air pumping cylinder 9, a mist catching net 10 and a rotary vacuum pump 11; the air pump 9 is arranged on the body 1 and is communicated with the cavity above the flash stable cavity 5, and the upper end of the interior of the air pump is provided with a mist catching net 10; the top of the suction cylinder 9 is connected with a pipeline 17 provided with a rotary vacuum pump 11.
In the embodiment, the corrugated baffle 4 is positioned between the partition plate 13 and the gas phase mechanism, so that the oil gas recovery effect is ensured; the other end of the heating coil 2 penetrates through the bottom of the body 1, and the end part of the end is provided with a material inlet 17; one end of the fire tube 1 is close to the partition plate 13, and the other end of the fire tube penetrates through the body 1 to be connected with the chimney 3, so that smoke is discharged from the chimney 3; the heating coil 2 is in an S-shaped design, so that the heating area is enlarged; the corrugated baffle 4 is vertically arranged, so that the flow state reforming of the hot material in the flash evaporation stabilizing cavity 5 is facilitated.
The device for reducing the VOC in the open dirty oil tank comprises the following steps:
(1) dividing the open tank 19 into a storage tank 23 and an oil separation tank 24 through a partition wall 22;
(2) the water-containing oil work flow:
releasing volatile oil gas of the material to be fed into the open pond 19 through the gasification device 18; the saturated vapor pressure reaches 70% of the local atmospheric pressure, the material can flow into the open pond 19, namely, the oil gas is not volatilized in the storage state of the open pond 19, the pressure kinetic energy of the material source is fully utilized, and the treatment energy consumption is reduced;
discharging the materials after releasing the volatile oil gas into the storage tank 23 or/and the oil separation tank 24 through two discharge branch pipes 28; recovering the released volatile oil gas through a VOC recovery device 20, carrying out pulling transportation on a liquid vehicle, and pumping the gas into a natural gas system;
specifically, dirty oil to be fed into the open pond 19 enters the heating coil 2 from the material inlet 17 of the gasification device 18, then the material in the heating coil 2 is heated by the fire tube 1, the heated dirty oil enters the flash evaporation stabilizing cavity 5, the heated pure oil enters the flash evaporation stabilizing cavity 5, the temperature of the pure oil is 70 ℃, the oily sewage is 40 ℃, and the smoke in the fire tube 1 is discharged from a chimney; the hot material entering the flash evaporation stabilizing cavity 5 of the gasification device 18 is subjected to flow state reforming through the corrugated baffle 4, then enters the flash evaporation stabilizing cavity 5 to stay for 30 minutes, the stabilized material overflows from the overflow weir plate 6 to enter the liquid collecting cavity 7, is buffered for 20 minutes, and finally is mechanically controlled through the valve float adjusting valve 8 to be conveyed to the open pond 19; vacuumizing by a rotary vacuum pump 11, forming a negative pressure space of-20 Pa at the top of an air pump 9, filtering oil gas released by materials in a flash evaporation stable cavity 5 by a mist catching net 10, pressurizing to 0.3MPa by the rotary vacuum pump 11, and externally conveying the released oil gas to a downstream VOC recovery device 20, so that oil gas is released in advance by dirty oil and the like entering an open pond 19, the open pond 19 stores non-volatile VOC (volatile organic compound) in a normal temperature and normal pressure state, and the VOC is reduced from the source; the bypass valve 31 and the two control valves 32 are used for respectively controlling the discharging of the conveying pipe 30 and the two discharging branch pipes 28; the VOC recovery device 20 adopts a device capable of recovering VOC in the prior art, and if the material contains H2S, the VOC recovery device containing an S-removing facility is adopted to realize the simultaneous recovery of H2S and VOC;
(3) the oil-containing sewage work flow is as follows: the sump oil stored in the oil separation tank 24 or the sump oil overflowing from the storage tank 23 from the partition wall 22 into the oil separation tank 24 is pumped by the sump oil lift pump 21 into the vaporizer 18 through the return pipe 29 to release VOC.
The utility model discloses it is right step (2) and step (3) do not do the execution sequence restriction, can carry out step (2) and step (3) simultaneously, also can carry out step (2) earlier, carry out step (3) again, also can carry out step (3) earlier, carry out step (2) again, select the execution sequence of step (2) and step (3) according to actual demand.
The utility model has the advantages that the open pool 19 is not sealed, no new hazard source is formed, no air is mixed, and the safety and reliability of VOC recovery are high; meanwhile, the oil gas is not volatilized, the environment is not polluted, and if the material contains H2S, the material and VOC can be recovered at the same time, and the material and VOC can be completely recovered and pumped into a system for utilization. The utility model discloses an at the oil field popularization and application, can realize uncovered sump oil pond environmental protection and administer up to standard, realize the VOC zero release, reduce environmental pollution, guarantee on-the-spot peripheral personnel's sanitary safety, be the VOC environmental protection treatment method that has higher economic benefits.
The above embodiments are only specific cases of the present invention, and the protection scope of the present invention includes but is not limited to the forms and styles of the above embodiments, and any suitable changes or modifications made thereto by those skilled in the art according to the claims of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides an open sump oil pond VOC minimizing processing apparatus which characterized in that: comprises a gasification device, an open pond, a VOC recovery device, a sump oil lift pump and a partition wall; a partition wall is arranged in the open pond, the top height of the partition wall is lower than that of the open pond, and the open pond is divided into a storage pond and an oil separation pond by the partition wall; one side of the gasification device is communicated with a feeding pipe, the top of the gasification device is connected with the VOC recovery device through an air outlet pipe, the bottom of the gasification device is connected with a main discharging pipe, the main discharging pipe is connected with two discharging branch pipes, and the two discharging branch pipes are respectively introduced into a storage pool and an oil separation pool; the oil separation tank is connected with the feeding pipe through a return pipe; the return pipe is provided with a sump oil lift pump.
2. The open sump VOC abatement apparatus of claim 1, wherein: the inlet pipe still with lead to the duct connection of holding vessel, be provided with the bypass valve on the conveyer pipe.
3. The open sump VOC abatement apparatus of claim 2, wherein: the conveying pipe is connected with a discharging branch pipe communicated into the storage tank.
4. The open sump VOC abatement apparatus of claim 1, wherein: and the feeding pipe and the two discharging branch pipes are respectively provided with a control valve.
5. The open sump VOC abatement apparatus of any one of claims 1-4, wherein: the gasification device comprises a body; the body is divided into a heating cavity and a processing cavity by a partition plate; a fire tube and a heating coil are arranged in the heating cavity; the treatment cavity comprises a liquid phase mechanism for flash evaporation of stable materials and a gas phase mechanism for recovery of oil gas in the liquid phase mechanism; the gas phase mechanism is positioned above the liquid phase mechanism and is communicated with the liquid phase mechanism; one end of the heating coil is communicated with the liquid phase mechanism.
6. The open sump VOC abatement treatment apparatus of claim 5, wherein: the liquid phase mechanism comprises a corrugated baffle, a flash evaporation stabilizing cavity, an overflow weir plate, a liquid collecting cavity and a valve float adjusting valve; the flash evaporation stabilizing cavity is positioned on one side of the partition plate, and the height of the flash evaporation stabilizing cavity is lower than that of the body; the heating coil is communicated with the flash evaporation stabilizing cavity; the corrugated baffle is fixedly arranged on the inner wall of the body, and the lower end of the corrugated baffle extends into the flash evaporation stabilizing cavity; an overflow weir plate is arranged on one side surface of the flash evaporation stabilizing cavity, a liquid collecting cavity is arranged on one side of the overflow weir plate, which is far away from the flash evaporation stabilizing cavity, and the height of the liquid collecting cavity is lower than that of the flash evaporation stabilizing cavity; the bottom of the liquid collecting cavity is connected with the first discharging pipe, one side of the liquid collecting cavity close to the upper end is connected with the second discharging pipe, and the first discharging pipe and the second discharging pipe are connected with the discharging main pipe through a valve float adjusting valve.
7. The open sump VOC abatement treatment apparatus of claim 6, wherein: the gas phase mechanism comprises an air pumping cylinder, a mist catching net and a rotary vacuum pump; the air pumping cylinder is arranged on the body and is communicated with the cavity above the flash evaporation stabilizing cavity, and the upper end in the air pumping cylinder is provided with a mist catching net; the top of the air pumping cylinder is connected with a pipeline provided with a rotary vacuum pump.
8. The open sump VOC abatement treatment apparatus of claim 6, wherein: the corrugated baffle is positioned between the clapboard and the gas phase mechanism.
9. The open sump VOC abatement treatment apparatus of claim 5, wherein: the other end of the heating coil penetrates through the bottom of the body, and the end part of the heating coil is a material inlet; one end of the fire tube is close to the partition plate, and the other end of the fire tube penetrates through the body and is connected with the chimney; the heating coil is of an S-shaped design.
10. The open sump VOC abatement treatment apparatus of claim 6, wherein: the corrugated baffle is vertically arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021266301.6U CN212924462U (en) | 2020-07-01 | 2020-07-01 | VOC (volatile organic compounds) reduction treatment device for open sump oil tank |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021266301.6U CN212924462U (en) | 2020-07-01 | 2020-07-01 | VOC (volatile organic compounds) reduction treatment device for open sump oil tank |
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| CN212924462U true CN212924462U (en) | 2021-04-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111762832A (en) * | 2020-07-01 | 2020-10-13 | 森诺科技有限公司 | VOC (volatile organic compound) reduction treatment device and method for open sump oil pool |
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2020
- 2020-07-01 CN CN202021266301.6U patent/CN212924462U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111762832A (en) * | 2020-07-01 | 2020-10-13 | 森诺科技有限公司 | VOC (volatile organic compound) reduction treatment device and method for open sump oil pool |
| CN111762832B (en) * | 2020-07-01 | 2023-11-10 | 森诺科技有限公司 | VOC (volatile organic compound) reduction treatment device and method for open sewage tank |
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