CN112441345A - Oil storage tank breather valve VOCs zero-emission device and using method thereof - Google Patents
Oil storage tank breather valve VOCs zero-emission device and using method thereof Download PDFInfo
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- CN112441345A CN112441345A CN201910799297.5A CN201910799297A CN112441345A CN 112441345 A CN112441345 A CN 112441345A CN 201910799297 A CN201910799297 A CN 201910799297A CN 112441345 A CN112441345 A CN 112441345A
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- storage tank
- soft bag
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- breather valve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/48—Arrangements of indicating or measuring devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/22—Safety features
- B65D90/32—Arrangements for preventing, or minimising the effect of, excessive or insufficient pressure
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a zero discharge device of VOCs (volatile organic compounds) of a breather valve of an oil storage tank, which comprises: the device comprises an oil storage tank, a breather valve cover cylinder, a soft bag, a compressor, a condenser, a water cooler, a storage tank, an oil pump and a stop valve. Wherein a breather valve cover cylinder is arranged outside the breather valve, the cover cylinder is connected with a soft bag, the soft bag is connected with a compressor, the compressor is connected with a condenser, the condenser is connected with a storage tank, and the storage tank is respectively connected with the soft bag and an oil storage tank. When the pressure of the storage tank rises and the breather valve is opened, the VOCs enter the soft bag, and when the pressure of the soft bag is greater than a set value, the compressor is opened, and the VOCs enter the condenser to be condensed into liquid and enter the storage tank to be stored. When the pressure of the oil storage tank is low, VOCs in the soft bag is sucked back into the oil storage tank through the cover cylinder and the breather valve, the cut-off valve is opened at the same time, the VOCs in the storage tank are supplemented into the soft bag, so that the pressure of the soft bag is increased to a set value, and the valve is closed. The device realizes zero discharge of VOCs of the breather valve of the oil storage tank, and is an energy-saving and environment-friendly VOCs treatment technology.
Description
Technical Field
The invention relates to the field of VOCs emission control of oil storage tanks, in particular to a VOCs zero-emission device of a breather valve of an oil storage tank.
Background
The oil storage tank is one of the most basic auxiliary production facility units in industrial production, and a large amount of VOCs (volatile organic compounds) is discharged in the operation process, and a series of problems such as resource waste, environmental pollution, health damage and the like are caused by improper disposal. In addition, VOCs produced by the emission is mixed with air, so that explosive mixtures are easily formed, and explosion accidents are easily caused.
The storage and discharge of the oil storage tank are divided into static discharge (small breath) and working discharge (large breath). The breather valve relies on the weight of valve disc self in the oil storage tank, according to jar internal pressure, and the control valve takes off and jumps, is the main VOCs discharge port of oil storage tank.
An effective solution is not provided for zero discharge of VOCs of the breather valve of the oil storage tank at present.
Disclosure of Invention
The invention provides a zero discharge device for VOCs of a breather valve of an oil storage tank, which aims to solve the technical problem of environmental pollution caused by direct discharge of organic waste gas of the breather valve VOCs on the existing oil storage tank to atmosphere.
The invention provides a zero discharge device for VOCs (volatile organic compounds) of a breather valve of an oil storage tank, which comprises: the device comprises an oil storage tank, a breather valve cover cylinder, a soft bag, a compressor, a condenser, a water cooler, a storage tank, an oil pump and a cut-off valve; wherein the breather valve cover section of thick bamboo is closed outward to oil storage tank breather valve, and the breather valve cover section of thick bamboo is connected with soft bag, and soft bag is connected with the compressor, and the compressor is connected with the condenser, and the condenser is connected with the storage tank, and the storage tank is connected with soft bag and oil storage tank respectively, and the gas return pipeline between storage tank and the soft bag sets up the trip valve, and the oil return pipeline between storage tank and the oil storage tank sets up the oil pump, and the condenser is connected with the cold water machine.
Preferably, the breather valve exhales the mouth and opens, and the VOCs organic waste gas of exhalation gets into soft bag through a breather valve cover section of thick bamboo, and gas pressure risees in the soft bag, when pressure is greater than soft bag setting value, the compressor is opened, and VOCs organic waste gas gets into the compressor and is compressed, and the VOCs waste gas of compressed gets into the condenser condensation, and the VOCs gas-liquid mixture body that is condensed gets into the storage tank and stores, and VOCs is the two-phase equilibrium state of gas-liquid in the storage tank, when storage tank liquid reaches the settlement liquid level, the oil pump is opened, and VOCs liquid is inputed back to the storage tank in the oil.
Preferably, the air suction port of the breather valve is opened, the gas in the soft bag is re-input into the oil storage tank through the breather valve cover cylinder, meanwhile, the pressure in the soft bag is reduced, the stop valve is opened, the compressed gas in the storage tank enters the soft bag, so that the pressure of the soft bag is increased and recovered to a set value, and the stop valve is closed.
Preferably, the soft bag is provided with a pressure measuring instrument, when the pressure of the soft bag is higher than a set value, the compressor is automatically opened, redundant VOCs organic waste gas in the soft bag is discharged, the pressure of the soft bag is reduced and is restored to the set value, and the compressor is automatically closed; when the pressure of the soft bag is lower than a set value, the stop valve is automatically opened, the high-pressure VOCs waste gas in the storage tank is automatically conveyed back into the soft bag, so that the pressure of the gas in the soft bag is increased, and when the pressure is increased to the set value, the stop valve is automatically closed. The self-control action ensures that the pressure in the oil storage tank is stable under the condition that the breather valve breathes and inhales.
Preferably, the breather valve cover cylinder is welded on the oil storage tank, seals the breather valve and communicates with the soft bag, and all VOCs organic waste gas of the breather valve during respiratory action is guaranteed to be transmitted to the soft bag through the breather valve cover cylinder.
Preferably, the condenser (6) is connected with a water chiller (7), the condenser (6) cools the compressed VOCs waste gas through medium water, and the medium water returns to the water chiller (7) to release heat and drop to the design temperature.
Preferably, the oil storage tank comprises a fixed vault tank, an inner floating roof tank, an outer floating roof tank and the like which are provided with breather valves.
Preferably, the soft bag, the compressor, the condenser, the water cooler, the storage tank, the oil pump and the cut-off valve are made into a skid-mounted form.
Drawings
FIG. 1 is a schematic diagram of a zero discharge device of VOCs of a breather valve of an oil storage tank.
The meaning of the various reference symbols in FIG. 1 above is as follows:
1-oil storage tank, 2-breather valve, 3-breather valve cover cylinder, 4-soft bag, 5-compressor, 6-condenser, 7-cold water machine, 8-storage tank, 9-oil pump, 10-trip valve.
Detailed Description
The following will explain the method of using the zero discharge device of the oil storage tank breather valve VOCs of the present invention in detail with reference to fig. 1.
The invention relates to a zero discharge device of VOCs (volatile organic chemicals) of a breather valve of an oil storage tank, which comprises: the device comprises an oil storage tank 1, a breather valve 2, a breather valve cover 3 cylinder, a soft bag 4, a compressor 5, a condenser 6, a water chiller 7, a storage tank 8, an oil pump 9 and a cut-off valve 10.
2 exhales of breather valve are opened, expired VOCs organic waste gas gets into soft bag 4 through breather valve cover section of thick bamboo 3, gas pressure risees in soft bag 4, when pressure is greater than soft bag 4 setting value, compressor 5 opens, VOCs organic waste gas gets into compressor 5 by the compression, the VOCs waste gas of compressed gets into the condensation of condenser 6, the VOCs gas-liquid mixture body of condensation gets into storage tank 8 and stores, VOCs is the two-phase equilibrium state of gas-liquid in storage tank 8, when 8 liquid of storage tank reach the settlement liquid level, oil pump 9 is opened, VOCs liquid is in oil pump input back storage tank 1.
The air suction port of the breather valve 2 is opened, the gas in the soft bag 4 is input into the oil storage tank 1 through the breather valve cover cylinder 3, meanwhile, the pressure in the soft bag 4 is reduced, the stop valve 10 is opened, the compressed gas in the storage tank 8 enters the soft bag 4, the pressure of the soft bag 4 is increased and recovered to a set value, and the stop valve is closed.
The soft bag 4 is provided with a pressure measuring instrument, when the pressure of the soft bag 4 is higher than a set value, the compressor 5 is automatically opened, VOCs organic waste gas in the soft bag 4 is discharged, the pressure of the soft bag 4 is reduced and is restored to the set value, and the compressor 5 is automatically closed; when the pressure of the soft bag 4 is lower than a set value, the stop valve 10 is automatically opened, the high-pressure VOCs waste gas in the storage tank 8 is automatically fed back into the soft bag 4, so that the gas pressure in the soft bag 4 rises, and when the pressure rises to the set value, the stop valve 10 is automatically closed. The self-control action ensures that the pressure in the oil storage tank 1 is stable under the condition that the breather valve breathes and inhales.
The breather valve cover cylinder 3 is welded on the oil storage tank 1, seals the breather valve 2 and is communicated with the soft bag 4, and all VOCs organic waste gas of the breather valve 2 during the breathing action is guaranteed to be transmitted to the soft bag 4 through the breather valve cover cylinder 3.
The invention has the following advantages:
(1) in the invention, the exhalation or inhalation of the breather valve is VOCs waste gas which is completely isolated from air, so that zero discharge of VOCs of the breather valve of the oil storage tank is really realized, and the risk of fire or explosion of the oil storage tank is reduced.
(2) In the invention, when the breather valve performs breathing and inhaling actions, the equipment performs corresponding actions, the breather valve exhaling port is opened, and the exhaled VOCs waste gas of the oil storage tank is received by the soft bag; the air suction port of the breather valve is opened, and the VOCs waste gas in the soft bag is re-input into the oil storage tank, so that the pressure balance in the oil storage tank and the normal work of the breather valve are ensured.
(3) Liquid reaches certain setting value in the storage tank, can be through the oil pump input back to the oil storage tank in, retrieve VOCs waste gas, practiced thrift the energy.
(4) The invention is suitable for various oil storage tanks, including fixed tanks, inner floating roof tanks, outer floating roof tanks, etc.
(5) The equipment 4 to the equipment 9 adopt a skid-mounted mode, the production and the assembly of the skid-mounted equipment are completed in a factory, the field installation workload is less, the design is compact, the occupied area is small, and the equipment can be conveniently moved.
The embodiments described above are intended to facilitate one of ordinary skill in the art in understanding and using the present invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments described herein, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (8)
1. The utility model provides an oil storage tank breather valve VOCs zero release which characterized in that includes:
the device comprises an oil storage tank (1), a breather valve (2), a breather valve cover cylinder (3), a soft bag (4), a compressor (5), a condenser (6), a water chiller (7), a storage tank (8), an oil pump (9) and a stop valve (10); wherein, storage tank (1) breather valve (2) are set up breather valve cover section of thick bamboo (3) outward, and a breather valve cover section of thick bamboo is connected with soft bag (4), and soft bag (4) are connected with compressor (5), and compressor (5) are connected with condenser (6), and condenser (6) are connected with storage tank (8), and storage tank (8) are connected with soft bag (4) and storage tank (1) respectively, and the return air pipeline between storage tank (8) and soft bag (4) sets up trip valve (10), and the return oil pipeline between storage tank (8) and storage tank (1) sets up oil pump (9).
2. The zero discharge device of the VOCs of the breather valve of the oil storage tank as claimed in claim 1, wherein an exhalation port of the breather valve (2) is opened, organic waste gas of exhaled VOCs enters the soft bag (4) through the breather valve cover cylinder (3), the gas pressure of the soft bag (4) is increased, when the pressure is larger than the set value of the soft bag (4), the compressor (5) is opened, the organic waste gas of VOCs enters the compressor (5), the compressed VOCs waste gas enters the condenser (6), the condensed VOCs gas-liquid mixture enters the storage tank (8) for storage, the VOCs is in a gas-liquid two-phase equilibrium state in the storage tank (8), when the liquid in the storage tank (8) reaches the set liquid level, the oil pump (9) is opened, and the VOCs liquid is input back to the oil storage tank (1) through the oil.
3. The zero discharge device of the oil storage tank breather valve VOCs according to claim 1, characterized in that the air suction port of the breather valve (2) is opened, the gas in the soft bag (4) is re-input into the oil storage tank (1) through the breather valve cover cylinder (3), meanwhile, the pressure in the soft bag (4) is reduced, the air return pipeline cut-off valve (10) is opened, the gas in the storage tank (8) enters the soft bag (2), the pressure rise of the soft bag (2) is recovered to a set value, and the cut-off valve (10) is closed.
4. The zero-emission device of the storage tank breather valve VOCs according to claims 2 and 3, characterized in that the soft bag (4) is provided with a pressure measuring instrument, when the pressure of the soft bag (4) is higher than a set value, the compressor (5) is automatically opened, the redundant VOCs organic waste gas in the soft bag (4) is discharged, the pressure of the soft bag is reduced and is restored to the set value, and the compressor (5) is automatically closed; when the pressure of the soft bag (4) is lower than a set value, the cut-off valve (10) of the gas return pipeline is automatically opened, the high-pressure VOCs waste gas in the storage tank (8) is automatically conveyed back into the soft bag (4) to enable the gas pressure in the soft bag (4) to rise, and when the pressure rises to the set value, the cut-off valve (10) is automatically closed; the automatic control action ensures that the pressure in the oil storage tank is stable under the condition that the breather valve breathes and inhales.
5. The zero discharge device of the storage tank breather valve VOCs according to claim 1, characterized in that the condenser (6) is connected with a water chiller (7), the condenser (6) cools the compressed VOCs waste gas through medium water, and the medium water returns to the water chiller (7) to release heat and reduce the temperature.
6. The zero-emission device of the breathing valve VOCs of the oil storage tank as claimed in claim 1, wherein the oil storage tank (1) comprises a fixed vault tank, an inner floating roof tank, an outer floating roof tank and the like which are provided with the breathing valve (2).
7. The zero-emission device of the oil storage tank breather valve VOCs according to claim 1, characterized in that the breather valve cover cylinder (3) is welded on the oil storage tank (1) to seal the breather valve (2) and communicate with the soft bag (4), so as to ensure that all VOCs organic waste gas generated during the breathing action of the breather valve (2) is transmitted into the soft bag (4) through the breather valve cover cylinder (3).
8. Device for zero release of VOCs by the breathing valve of a storage tank as claimed in claim 1, wherein said equipment (4) to said equipment (9) are skid mounted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910799297.5A CN112441345A (en) | 2019-08-28 | 2019-08-28 | Oil storage tank breather valve VOCs zero-emission device and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910799297.5A CN112441345A (en) | 2019-08-28 | 2019-08-28 | Oil storage tank breather valve VOCs zero-emission device and using method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112441345A true CN112441345A (en) | 2021-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910799297.5A Pending CN112441345A (en) | 2019-08-28 | 2019-08-28 | Oil storage tank breather valve VOCs zero-emission device and using method thereof |
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| CN (1) | CN112441345A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116617698A (en) * | 2023-07-26 | 2023-08-22 | 克拉玛依市科力节能环保技术有限公司 | Oil storage tank dissipation steam greasy dirt recovery unit in viscous crude exploitation |
-
2019
- 2019-08-28 CN CN201910799297.5A patent/CN112441345A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116617698A (en) * | 2023-07-26 | 2023-08-22 | 克拉玛依市科力节能环保技术有限公司 | Oil storage tank dissipation steam greasy dirt recovery unit in viscous crude exploitation |
| CN116617698B (en) * | 2023-07-26 | 2023-11-03 | 克拉玛依市科力节能环保技术有限公司 | Oil storage tank dissipation steam greasy dirt recovery unit in viscous crude exploitation |
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