CN210936361U

CN210936361U - Oil gas suppression system is kept apart to nanometer membrane

Info

Publication number: CN210936361U
Application number: CN201921276022.5U
Authority: CN
Inventors: 魏东金
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2020-07-07
Anticipated expiration: 2029-08-05

Abstract

The utility model provides a nanometer membrane keeps apart oil gas suppression system. Wherein the oil gas suppression system is kept apart to nanometer membrane includes: an air compression device and a nano-scale particle generator; the nanometer particle generator comprises a generator body, a liquid storage device, a gas input end and an output end; the liquid storage device is used for containing the oil gas inhibition surfactant; the nanometer particle generator is used for generating nanometer particles by utilizing the oil gas inhibition surfactant. The utility model discloses can reduce inside oil gas concentration to below 10% LEL and further carry out nanometer membrane to the remaining liquid level of treating clean oil storage fortune oily device and cover the isolation in the short time, obtain safe operation space relatively, maintain operations such as maintenance washing, improve safety and efficiency greatly, avoid remaining among the current processing method liquid fuel and need sweep evaporation or water drive washing huge waste and the environmental pollution problem that causes.

Description

Oil gas suppression system is kept apart to nanometer membrane

Technical Field

The utility model belongs to the technical field of the oil gas restraines, especially, relate to a oil gas restraint system is kept apart to nanometer membrane.

Background

The oil storage and transportation device to be cleaned is special equipment, a container, a transportation pipeline and the like for transporting, storing and transporting fuel oil, and needs to be cleaned and maintained regularly to ensure the quality of the fuel oil and the safety of transportation, storage and transportation. Only a gas station in a mainland area of China has about 50 ten thousand fuel storage tanks, at least 15 ten thousand tanks need to be cleaned every year, at least 30-50 liters of liquid fuel cannot be pumped out by the existing means and only can be blown or washed by water, about 450 ten thousand liters is taken as an example of minimum 30 liters of each tank, and the data is increased by more than 3 times and is as high as 1350 ten thousand liters if an oil tanker, a ship, a pipeline, a train tank car, a transport tank car, an oil depot and the like are added.

Because fuel oil is easy to volatilize and oil gas is combustible and explosive, the combustible gas in the fuel oil needs to be discharged below the explosion lower limit (% LEL) of the combustible gas to carry out manual cleaning and maintenance, the existing technical means cannot completely extract the internal liquid fuel, a conventional purging method is used for purging the internal liquid fuel, a long time is consumed, a large amount of air is polluted (the liquid needs to be volatilized and removed), and a large amount of oily sewage is generated after the internal liquid fuel is purged again after being washed by water.

In a word, the two existing methods cannot ensure that all fuel oil in the oil tank is discharged, the fuel oil in the oil tank always contains a large amount of combustible gas, so that the oil tank is extremely easy to damage the health of maintenance personnel, the large amount of combustible gas buried in the oil tank causes flammable and explosive potential safety hazards, the maintenance time is long, the efficiency is low, and the surrounding environment is polluted greatly, so that the development of an environment-friendly oil gas inhibition technology has great social value and environmental protection value and is imperative.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a nano-film isolated oil-gas inhibition system which is applied to the cleaning and maintenance of an oil storage and transportation device to be cleaned; the oil storage and transportation device to be cleaned is provided with a containing body; the body that holds is connected with the fluid that can be used for admitting air and discharges into the pipeline to and can be used for the fluid discharge pipeline of exhaust, oil gas suppression system is kept apart to the nanometer membrane includes:

an air compressing device for generating compressed air, and a nano-scale particle generator;

the nanometer particle generator comprises a generator body, a liquid storage device connected with the generator body, a gas input end arranged on the generator body and connected with the air compression device, and an output end for ejecting nanometer particles by using the compressed air; wherein the content of the first and second substances,

the liquid storage device is used for containing an oil gas inhibition surfactant; the nanometer particle generator is used for generating nanometer particles by utilizing the oil gas inhibition surfactant;

the output end of the nanometer particle generator is communicated with the fluid discharge pipeline;

the nanometer particle generator can utilize the oil gas inhibition surfactant to prepare nanometer particles, the compressed air is used as a carrier and a power source and is conveyed into the oil storage and transportation device to be cleaned through the fluid discharge pipeline, a nanometer inhibitor isolation layer is formed on the solid and liquid surfaces in the oil storage and transportation device to be cleaned, and oil gas in the oil storage and transportation device to be cleaned is discharged out of the oil storage and transportation device to be cleaned through the fluid discharge pipeline.

Preferably, the nanoparticle generator further comprises a preparation cavity arranged in the generator body;

the nanometer particle generator also comprises a nozzle, a pressurizing diffusion chamber, a vacuum suction inlet and a turbocharging device, wherein the nozzle, the pressurizing diffusion chamber and the vacuum suction inlet are all connected with the preparation cavity; wherein the content of the first and second substances,

the nozzle is communicated with the gas input end; the vacuum suction inlet is communicated with the liquid storage device; one end of the preparation cavity far away from the nozzle is communicated with the gas input end;

and in a vacuum state, oil gas inhibition surfactant in the liquid storage device is sucked into the preparation cavity through the vacuum suction inlet, based on the fact that the turbocharging device inputs supercharging airflow to the preparation cavity through the supercharging diffusion chamber, the oil gas inhibition surfactant is diluted and atomized to prepare nano-scale particles, and compressed air is input through the suction nozzle to eject the nano-scale particles through the output end.

Preferably, the hydrocarbon inhibiting surfactant is a nanomembrane inhibiting surfactant having non-toxic, non-corrosive, and degradable properties.

Preferably, the oil and gas inhibition surfactant is an amphiphilic nano-film inhibition surfactant containing a hydrophilic group and a lipophilic group.

Preferably, the explosion lower limit detection device comprises a detection host and a detection probe;

the detection probe is connected with the detection host and arranged in the containing body of the oil storage and transportation device to be cleaned, so that the lower limit of gas explosion in the oil storage and transportation device to be cleaned can be detected in real time or at regular time.

Preferably, the oil storage and transportation device to be cleaned, the nano-particle generator and the explosion lower limit detection equipment are all grounded through grounding wires;

and the resistance between the lower explosion limit detection device and the ground through the grounding wire is less than 10 ohms.

Preferably, a pipeline connected between the nanoparticle generator and the fluid discharge pipeline is an antistatic pipeline.

Preferably, the air compression device is a duplex air compressor.

The utility model provides a nanometer membrane isolation oil gas inhibition system, wherein the nanometer membrane isolation oil gas inhibition system comprises an air compression device and a nanometer particle generator; the nanometer particle generator is communicated with a fluid discharge pipeline of the oil storage and transportation device to be cleaned through an output end, so that when the nanometer membrane isolation oil gas inhibition system carries out nanometer atomization on a nanometer membrane inhibition surfactant in the liquid storage device, the air compression device outputs compressed air flow to immediately blow prepared nanometer atomized particles into the oil storage and transportation device to be cleaned through the fluid discharge pipeline, and a nanometer membrane isolation layer is rapidly formed on all solids and liquid surfaces in the oil storage and transportation device to be cleaned, so that fuel oil remained in the oil storage and transportation device to be cleaned is isolated by the nanometer membrane, and meanwhile oil gas in the oil storage and transportation device to be cleaned is discharged out of the oil storage and transportation device to be cleaned through the fluid discharge pipeline, the continuous volatilization of the surface of residual oil is avoided, the oil gas concentration can be reduced in a short time, and further complete cleaning, maintenance and maintenance work can be carried out on the oil storage and transportation device to be cleaned, the problems of huge waste and environmental pollution caused by purging evaporation or water-driven water washing of residual liquid fuel in the existing treatment method are solved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a nano-membrane isolated oil-gas suppression system in the present application;

FIG. 2 is a plot of LEL values over time for the test experiments performed in the examples of the present application;

fig. 3 is a schematic view of the arrangement of the fluid inlet pipeline and the fluid outlet pipeline of the oil storage and transportation device to be cleaned in the nano-film isolated oil-gas inhibition system of the present application, which are disposed at two distal ends of the container body;

fig. 4 is a schematic view of the arrangement of the fluid inlet pipeline and the fluid outlet pipeline of the oil storage and transportation device to be cleaned in the nano-film isolated oil-gas inhibition system of the present application at one end of the adjacent container body;

fig. 5 is a schematic view of a fluid inlet pipeline and a fluid outlet pipeline of an oil storage and transportation device to be cleaned in the nano-film isolated oil-gas inhibition system of the present application, which are arranged at the middle position of an adjacent containing body;

FIG. 6 is a schematic cross-sectional view of a nanoparticle sounder in the present nanomembrane isolated oil and gas suppression system.

Reference numerals:

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1:

referring to fig. 1-6, the present embodiment provides a nano-membrane isolated oil-gas suppression system 1, which is applied to cleaning and maintenance of an oil storage and transportation device 2 to be cleaned; the oil storage and transportation device 2 to be cleaned is provided with a containing body 21; the containing body 21 is connected with a fluid inlet pipeline 22 which can be used for air inlet and a fluid outlet pipeline 23 which can be used for air outlet;

the nano-membrane isolated oil and gas suppression system 1 includes:

an air compressing device 11 for generating compressed air, and a nano-scale particle 24 generator 12;

the generator 12 of the nano-scale particles 24 comprises a generator body 121, a liquid storage device 122 connected with the generator body 121, a gas input end 124 arranged on the generator body 121 and connected with the air compression device 11, and an output end 123 for ejecting the nano-scale particles 24 by using the compressed air; wherein the content of the first and second substances,

the reservoir 122 is adapted to contain an oil and gas inhibiting surfactant; the nanoparticle 24 generator 12 is used for generating nanoparticles 24 by using the oil gas inhibition surfactant;

the output 123 of the nanoparticle 24 generator 12 is in communication with the fluid discharge line 22;

the nanometer-scale particle 24 generator 12 can utilize the oil gas inhibition surfactant to prepare nanometer-scale particles 24, the compressed air is used as a carrier and a power source and is conveyed into the oil storage and transportation device 2 to be cleaned through the fluid discharge pipeline 22, a nanometer inhibitor isolation layer is formed on the solid and liquid surfaces in the oil storage and transportation device 2 to be cleaned, and the oil gas in the oil storage and transportation device 2 to be cleaned is discharged out of the oil storage and transportation device 2 to be cleaned through the fluid discharge pipeline 23.

Specifically, the nanoparticle 24 generator injects a pressurized airflow to the oil-gas inhibition surfactant sucked in vacuum to dilute and atomize the oil-gas inhibition surfactant to obtain nanoparticles 24, and the nanoparticles 24 are further injected from the output end 123 by using the introduced compressed air as a carrier and a power source.

The oil gas inhibition surfactant is used for forming a nano inhibitor isolation layer on the solid and liquid surfaces in the oil storage and transportation device 2 to be cleaned. Wherein, the solid in the oil storage and transportation device 2 to be cleaned can be solid such as uncleaned sediment, impurities, oil stains, dirt debris and the like, and the surface or the inside of the solid is stained with fuel oil; the liquid is a dead volume which cannot be discharged from the liquid, and the pipeline cannot pump fuel oil through the pump. In order to clean the solid or liquid, so that the volatilizable fuel on the surface of the solid or liquid is not volatilized and is isolated from the air, and the combustible gas of the fuel volatilized in the air is removed out of the containing body 21, in the embodiment, the nano-particles 24 prepared by the oil gas inhibition surfactant are quickly covered on the surface of the solid and the liquid in the containing body 21 through diffusion distribution, so that the interior of the solid and the surface of the liquid are isolated from the outside air, the contact between the solid and the outside air is reduced or avoided, and the volatilization of the fuel on the solid and the liquid surface is suspended.

The oil storage and transportation device 2 to be cleaned is fuel oil storage, transportation and conveying equipment. It typically stores or transports fuel therein, which is a fuel having a certain volatility, including but not limited to gasoline and diesel, etc. The oil storage and transportation device 2 to be cleaned may include, for example, but is not limited to, a fuel oil storage tank, a fuel oil delivery pipeline, a tanker tank, a ship tank, and the like. The oil storage and transportation device 2 to be cleaned can comprise a containing body 21, a fluid discharge pipeline 23 connected with the containing body 21 and a fluid discharge pipeline 22; wherein, the containing body 21 is used for storing and placing fuel, the fluid inlet pipeline 22 is an inlet for air inlet and fuel input, and the fluid outlet pipeline 23 can be an outlet for air exhaust and fuel output; in addition, the two may be interchanged.

The air compressor 11 is an apparatus for compressing and outputting air. In this embodiment, the air compressing device 11 outputs compressed air with adjustable amount and/or speed, and is used for outputting the compressed air, atomizing the nano-film inhibitor and sending the atomized nano-film inhibitor into the oil storage and transportation device 2 to be cleaned.

The compressed air is air compressed by an external force. The air has compressibility, and the volume of the air is reduced and the pressure of the air is increased by the mechanical work of the air compressor, so that the compressed air is called. Compressed air is an important power source. Compared with other energy sources, the energy source has the following obvious characteristics: the device is clear and transparent, convenient to convey, free of special harmful performance and sparks and used for blowing and sweeping, and the phenomenon of equipment heating cannot occur.

In this embodiment, compressed air is used as a power source to drive the nano-particle 24 generator 12 to atomize the nano-film inhibitor; on the other hand, compressed air is used as a distribution carrier to sweep nano atomized particles to rapidly spread on the solid and liquid surfaces at each place in the oil storage and transportation device 2 to be cleaned, including the inner wall of the tank body, the surface of residual oil 25, the surfaces of substances such as oil residue impurities, dirt and the like, so as to form a nano membrane isolation layer; furthermore, the compressed air separated from the nano-film can displace the oil gas out of the body, thereby reducing the concentration of the oil gas. In summary, the nano-membrane oil-gas suppression system using compressed air as power can improve the overall efficiency of cleaning, maintenance and maintenance, and provide a relatively safe working environment for operators.

The nano-scale particle 24 generator 12 is an apparatus for nano-atomizing the nano-film aerosol inhibitor dispersion, and is connected to the liquid storage device 122, and the nano-film aerosol inhibitor dispersion is contained in the liquid storage device 122. In this embodiment, a nanomembrane oil and gas inhibitor dispersion.

The molecules of the surfactant are essentially composed of two parts: a part is an oleophilic or hydrophobic group which is easily soluble in oil and hardly soluble in water, called oleophilic group, such as alkyl, aryl, etc.; the other part is a hydrophilic or oleophobic group which is easily soluble in water and hardly soluble in oil, and is called hydrophilic group, such as hydroxyl group, fusio group or sulfonic group. In this embodiment, the surfactant used is a surfactant containing both hydrophilic groups and lipophilic groups, and after 12 nm atomization of the surfactant dispersion liquid by the nanoparticle 24 generator, the surfactant dispersion liquid can be mutually adsorbed, cross-linked and attached to the residual fuel oil on the inner surfaces of the tank wall, the pipeline, the oil tanker oil tank and the ship fuel tank to form a layer of dense nano-film isolation layer, that is, a layer of molecular film is formed on the surface of the residual oil 25, and the residual liquid is isolated from contacting the atmosphere to prevent continuous volatilization.

The nanometer particle 24 generator 12 carries out nanometer atomization on the surfactant sucked in vacuum, and blows the nanometer particles 24 to all solid liquid surfaces distributed in the pipe body of the oil storage and transportation device 2 to be cleaned by taking compressed air as a distribution carrier to form a nanometer film isolation layer.

In addition, the fluid discharge line 23 may be connected to a vent, which is directly connected to the atmosphere and has a height of more than 5 m.

The embodiment provides a nano-film isolated oil-gas inhibition system 1, which comprises an air compression device 11 and a nano-particle 24 generator 12; the nanometer particle 24 generator 12 is communicated with the fluid discharge pipeline 22 of the oil storage and transportation device 2 to be cleaned through the output end 123, so that when the nanometer particle 24 generator 12 prepares the nanometer inhibiting surfactant in the liquid storage device 122, the air compression device 11 outputs the compressed air flow to blow the prepared nanometer particles 24 into the oil storage and transportation device 2 to be cleaned through the fluid discharge pipeline 22, and rapidly forms a vapor inhibitor molecular layer on the solid and liquid surfaces in the oil storage and transportation device 2 to be cleaned, thereby effectively isolating the fuel oil remained on the inner surface of the oil storage and transportation device 2 to be cleaned from the air under the coating of the vapor inhibitor molecular layer, and simultaneously discharging the oil gas in the oil storage and transportation device 2 to be cleaned out of the oil storage and transportation device 2 to be cleaned through the fluid discharge pipeline 23, and avoiding the volatilization of the surface of the residual oil 25, therefore, the concentration of the oil gas in the oil storage and transportation device 2 to be cleaned can be reduced in a short time, the maintenance work of the oil storage and transportation device 2 to be cleaned can be further carried out, the maintenance time is short, the efficiency is high, and the economic loss and more atmospheric pollution caused by the volatilization of the residual liquid in the oil storage and transportation device 2 to be cleaned in the existing treatment method are avoided.

Example 2:

referring to fig. 1 to 6, the present embodiment provides a nanomembrane oil and gas inhibitor dispersion liquid based on the above embodiments.

The nanoparticle 24 generator 12 is a mechanical vacuum atomized nanoparticle 24 generator 12, and is a portable nanoparticle 24 generator 12. The method is used for isolating the nano-film of the buried tank of the gas station.

The method is used for carrying out vacuum atomization on the oil gas inhibition surfactant in the liquid storage device 122, so that the nano-scale particles 24 corresponding to the oil gas inhibition surfactant are prepared.

Further, the nanoparticle 24 generator 12 further includes a preparation cavity 125 disposed in the generator body;

the nano-scale particle 24 generator 12 further comprises a nozzle 126, a pressurizing diffusion chamber 127 and a vacuum suction port 128, all connected to the preparation cavity 125, and a turbo-charging device 129 connected to the pressurizing diffusion chamber 127; wherein the content of the first and second substances,

the nozzle 126 is in communication with the gas input 124; the vacuum intake port 128 communicates with the reservoir 122; the end of the preparation chamber 125 remote from the nozzle 126 communicates with the gas input 124;

in a vacuum state, the oil and gas inhibition surfactant in the liquid storage device 122 is sucked into the preparation cavity 125 through the vacuum suction port 128, the oil and gas inhibition surfactant is diluted and atomized by inputting pressurized airflow to the preparation cavity 125 through the pressurized diffusion chamber 127 by the turbo-charging device, the nano-scale particles 24 are prepared, and the compressed air is input through the suction nozzle to eject the nano-scale particles 24 through the output end 123.

It should be noted that the nanoparticle 24 generator 12 may include a gas input 124 disposed on the generator body 121 for supplying compressed air; a nozzle 126 connected to the gas input 124 is disposed therein, and the nozzle 126 injects compressed air into the nanoparticle 24 generator 12; the inside of the nanometer-scale particle 24 generator 12 is further provided with a preparation cavity 125, the preparation cavity 125 is communicated with a nozzle 126, and the preparation cavity 125 is further connected with a pressurization diffusion chamber 127, a vacuum suction port 128 and an output end 123 which is used for ejecting the nanometer-scale particle 24 and is arranged far away from the gas input end 124; the vacuum suction port 128 is used for sucking the oil and gas inhibition surfactant in the liquid storage device 122 into the preparation cavity 125 through vacuum; the pressurizing diffusion chamber 127 is connected with a diffuser and used for inputting pressurizing airflow into the preparation cavity 125 to atomize the oil gas inhibition surfactant and dilute the concentration, so that the oil gas inhibition surfactant is prepared into the nano-scale particles 24, and the compressed air input through the gas input end 124 is ejected through the output end 123.

Wherein, the compressed air plays a role as an oil gas inhibition surfactant to generate the atomization power and the distribution carrier of the nanometer particles 24. The input pressurized airflow can be pressurized by adopting a turbocharging method or a multi-time pressurization method, so that the conventional heavy nanometer generator is lighter. Further, the oil and gas inhibition surfactant is a nano-film inhibition surfactant with non-toxic, non-corrosive and degradable properties.

The nano film inhibiting surfactant without toxicity, corrosiveness and biodegradability is applied, after the nano film inhibiting surfactant is applied, the oleophilic and hydrophilic nano particles 24 are mutually attracted and crosslinked to form a film, so that the oil is isolated and prevented from continuously volatilizing, the environmental pollution and health risks are greatly reduced, the nano film is degraded and separated after a period of time (about several hours), oil gas is a dangerous hazard source which cannot cause any adverse effect on residual oil, the nano film can be combustible and explosive and consumes a large amount of oxygen, and when necessary operation is carried out on a container in a place capable of generating volatile oil gas, an operator must reduce the concentration of the oil gas to be below an explosion limit, usually less than 10% (LEL) to prevent combustion explosion and suffocation. By utilizing the nano-film isolated oil-gas inhibition system 1 provided by the embodiment to inhibit the generation of the fuel steam in an isolated manner, the hidden danger of burning explosion and suffocation poisoning which is contacted by maintenance personnel is reduced to the minimum, and meanwhile, the comprehensive pollution to the environment is also greatly reduced.

Further, the oil gas inhibition surfactant is an amphiphilic nano-film inhibition surfactant containing a hydrophilic group and a lipophilic group.

In the embodiment, the oil and gas inhibition surfactant is an amphiphilic nano-film inhibition surfactant having a hydrophilic group and an impregnated group.

For example, the hydrocarbon inhibiting surfactants may include, but are not limited to, alkyl glycosides; in addition, a complex mixture of alkyl glycosides may also be used.

Further, the device also comprises an explosion lower limit detection device 13, wherein the explosion lower limit detection device 13 comprises a detection host and a detection probe 131;

the detection probe 131 is connected with the detection host and arranged in the containing body 21 of the oil storage and transportation device 2 to be cleaned, so as to detect the lower limit of gas explosion in the oil storage and transportation device 2 to be cleaned in real time or at regular time.

The explosion lower limit detection device 13 is used for detecting the concentration of the oil gas in the oil storage and transportation device 2 to be cleaned in real time or at regular time so as to obtain an LEL value, wherein the LEL refers to the explosion lower limit and is a technical term aiming at the oil gas. The lowest concentration of oil gas in the air when it meets the open fire is called the lower explosion limit, called LEL for short. English: LowerExplosive Limit. Through the monitoring of the explosion lower limit detection equipment 13, the discharge amount of the portable surfactant can be better controlled, on one hand, the LEL in the oil storage and transportation device 2 to be cleaned is better kept to meet the safety requirement, on the other hand, more surfactants can be saved after the standard is reached, and the cost is reduced.

Further, the oil storage and transportation device 2 to be cleaned, the nano-particle 24 generator 12 and the explosion lower limit detection device 13 are all grounded through grounding wires;

and wherein the resistance between the lower explosion limit detecting device 13 and the ground via the ground line is less than 10 ohms.

The operation area is an inflammable and explosive area to prevent unnecessary fire and explosion caused by static electricity, so the oil storage and transportation device 2 to be cleaned, the nano-particle 24 generator 12 and the detection equipment are all connected with the ground wire, and the resistance between the detection equipment and the ground net, namely the ground is less than 10 ohms.

Further, the pipeline connecting the nanoparticle 24 generator 12 and the fluid inlet pipeline 22 is an antistatic pipeline.

Further, the air compression device 11 is a duplex air compressor.

Example 3:

referring to fig. 1 to 6, based on the nanomembrane isolated oil gas suppression system 1 provided in the foregoing embodiment, there is provided a nanomembrane isolated oil gas suppression method in this embodiment, including:

the fuel oil in the oil storage and transportation device 2 to be cleaned is discharged to reach a dead volume position where the fuel oil cannot be discharged continuously;

starting an air compression device 11 and a nanometer particle 24 generator 12, outputting compressed air as atomization power and a distribution carrier through the air compression device 11, atomizing nanometer particles 24 prepared by a nanometer oil gas inhibition surfactant in a liquid storage device 122 of the nanometer particle 24 generator 12, diffusing the atomized nanometer particles into the oil storage and transportation device 2 to be cleaned through a fluid discharge pipeline 22, forming a nanometer membrane isolation layer covering the solid and liquid surfaces in the oil storage and transportation device 2 to be cleaned, and discharging oil gas in the oil storage and transportation device 2 to be cleaned out of the oil storage and transportation device 2 to be cleaned through a fluid discharge pipeline 23;

tracking the concentration of oil gas in the oil storage and transportation device 2 to be cleaned by using the explosion lower limit detection equipment 13, removing the oil gas by using the air compression device 11 and the nanometer particle 24 generator 12 to reduce the concentration of the oil gas in the oil storage and transportation device 2 to be cleaned, and closing the air compression device 11 and the nanometer particle 24 generator 12 when the concentration is lower than the explosion lower limit by 10%; when the oil gas concentration is higher than the lower explosion limit by 10 percent, starting the air compression device 11 and the nanometer particle 24 generator 12 until the oil gas concentration is lower than the lower explosion limit by 10 percent;

and when the concentration of the oil gas is lower than the lower explosion limit of 10%, disassembling the manhole cover of the oil storage and transportation device 2 to be cleaned, and cleaning the interior of the containing body 21.

The above, "LEL" refers to the lower explosive limit, which is a technical term for oil and gas. The lowest concentration of oil gas in the air when it meets the open fire is called the lower explosion limit, called LEL for short. English: lower explicit Limit. After reducing LEL to 10% through fuel oil storage tank, pipeline, oil ship oil tank, boats and ships fuel tank oil gas suppression system, dismantle tank, pipe, the cabin body top cap of treating clean oil storage oil transportation device 2, to this internal decontamination.

Specifically, the cleaning can include cleaning the residual oil 25 in the dead tank of the inner side wall of the tank, the pipe and the cabin body, and cleaning all the sludge, impurities and other substances in the tank, the pipe and the cabin body.

When cleaning, firstly, discharging the fuel in the oil storage and transportation device 2 to be cleaned, pumping the fuel through a vacuum pump, or discharging the fuel through gravity, wherein the fuel may have a certain volume which cannot be discharged through a pipeline or pumped by a pump; for example, if there is a dead volume in the piping or grid, or if there is a gradient in the interior, etc., where the discharge cannot continue, then the discharge may be stopped.

When the oil gas concentration is lower than the lower explosion limit by 10%, the manhole cover of the oil storage and transportation device 2 to be cleaned is detached, and the containing body 21 is cleaned. The step is that the container body 21 is tracked by detection equipment, when the concentration of the oil gas is lower than 10% of the lower explosion limit, the dismantling of facilities such as pipelines and upper covers which obstruct further cleaning work can be confirmed, namely pipes, covers and professional equipment which obstruct subsequent construction are dismantled under the safe condition, so that the cleaning is convenient.

The embodiment provides a maintenance method of an oil storage and transportation device 2 to be cleaned, which comprises an air compression device 11, a nanoparticle 24 generator 12 and an explosion lower limit detection device 13, when the nanoparticle 24 generator 12 prepares nanoparticles 24 for an oil and gas inhibition surfactant in a liquid storage device 122, the air compression device 11 outputs a compressed air flow to blow the nanoparticles 24 of the ionized oil and gas inhibition surfactant into the oil storage and transportation device 2 to be cleaned through a fluid discharge pipeline 22, and rapidly forms a vapor inhibitor molecular layer, and simultaneously discharges oil and gas in the oil storage and transportation device 2 to be cleaned out of the oil storage and transportation device 2 to be cleaned through the fluid discharge pipeline 23, so that solid and/or liquid such as residual oil 25, oil residue, dirt and impurities and the like on the inner surface of the oil storage and transportation device 2 to be cleaned are effectively isolated from air under the coating of the vapor inhibitor molecular layer, the volatilization of fuel oil remained on the inner surface is avoided, so that the concentration of the oil gas inside the oil storage and transportation device 2 to be cleaned can be reduced in a short time, the maintenance work can be further carried out, the maintenance time period and the maintenance efficiency are high, and the problems that the residual oil exists in the existing treatment method, the harm is caused to the health of maintenance personnel, the potential safety hazard of flammability and explosiveness exists, the maintenance time is long and the efficiency is low are solved.

In addition, the method can be maintained by the following quick cooling operation cleaning method:

controlling LEL in the oil storage and transportation device 2 to be cleaned to be lower than 10% by utilizing an oil gas fuel oil storage tank, a pipeline, an oil tanker oil tank and a ship fuel tank oil gas inhibition system of the oil storage and transportation device 2 to be cleaned; when the LEL in the oil-carrying device 2 to be cleaned rises and reaches or exceeds even 10%, the air compressing device 11 and the nanoparticle 24 generator 12 are activated until the desired LEL (e.g., less than LEL 10%) is reached, typically within 10-15 minutes after the air compressing device 11 and the nanoparticle 24 generator 12 are activated;

cleaning the inside of the oil storage and transportation device 2 to be cleaned;

the top cover of the oil storage and transportation device 2 to be cleaned is disassembled, and the sealing washer is replaced;

and performing maintenance work in the oil storage and transportation device 2 to be cleaned.

Further, after "discharging the fuel in the oil storage and transportation device 2 to be cleaned to the dead tank storage location", the method further includes:

inserting the pipette of the generator body 121 of the nanoparticle 24 generator 12 into the reservoir 122; the oil gas inhibition surfactant is filled in the liquid storage device 122;

the fluid connecting the output 123 of the nanoparticle 24 generator 12 to the tank, tube, capsule body is discharged into the conduit 22;

connecting the output end 123 of the air compressing device 11 with the airflow input port of the nanoparticle 24 generator 12;

the detection probe 131 of the explosion lower limit detection device 13 is arranged in the tank, the pipe and the cabin body of the oil storage and transportation device 2 to be cleaned;

the generator body 121 of the nano-scale particle 24 generator 12, the air compression device 11, the tank, the pipe, the tank body of the oil storage and transportation device 2 to be cleaned, and the explosion lower limit detection device 13 are respectively connected with a ground wire through a grounding clip.

In addition, referring to fig. 3-5, in order to ensure that the nanoparticles are fed inside and the inside forms a gas flow circulation when the volatile fuel gas is removed by the compressed air, so as to achieve a better removing effect, the fluid feeding pipeline and the fluid discharging pipeline with different distances and positions can be selected, so that different gas circulations are formed inside. For example, in fig. 3, two distant ends are provided for the fluid input pipeline and the fluid output pipeline, so that the internal combustible volatile gas is output from one end, and the distant end is pushed outwards by inputting compressed air; or as shown in fig. 4, the fluid input pipeline and the fluid output pipeline are arranged at one end of the adjacent containing body 21, so that the gas is exhausted from the position close to the original inlet after one circle of internal circulation; or as shown in fig. 5, the fluid input pipeline and the fluid output pipeline are arranged at the upper end of the middle part of the containing body 21, and the compressed air input by the fluid input pipeline is circulated through the spaces at the two ends and then output by the two fluid output pipelines at the two ends adjacent to the fluid input pipeline respectively. Preferably, the positions of the fluid input pipeline and the fluid output pipeline can be selected to be far away, so that the combustible gas in the interior can be more efficiently discharged from the containing body 21.

Further, after the step of detaching the manhole cover of the oil storage and transportation device 2 to be cleaned and cleaning the inside of the containing body 21 when the oil gas concentration is lower than the lower explosion limit by 10%, the method further includes:

installing a special temporary manhole cover at the position of the original manhole cover of the containing body 21;

the oil gas concentration in the containing body 21 is tracked through the explosion lower limit detection device 13, and the nano-film isolation oil gas inhibition system 1 is controlled to enable the oil gas concentration in the containing body 21 to be lower than 1%, so that the containing body 21 can be maintained. Above-mentioned, this step is, after holding on the body 21 upper end cap temporary access hole lid, trail oil gas concentration through check out test set, when oil gas concentration is less than 1% of explosion lower limit, then can be by the manual work get into hold in the body 21, carry out thorough manual work and get into the maintenance of clearance cleanness to in order to reach the purpose to holding the maintenance of body 21.

After cleaning, replacing the top cover with a temporary top cover, detecting the gas safety again, and through a tracking test, the air compression device 11 and the nano-scale particle 24 generator 12 are in inverse proportion to the LEL, that is, the power or the discharge speed of the air compression device 11 and the nano-scale particle 24 generator 12 is increased, and the LEL reduction speed is faster; the air compression device 11 and the nanometer particle 24 generator 12 have the adjusting capacity of less than 1% for the lower explosion limit of oil gas in the oil storage and transportation device 2 to be cleaned; the venting is stopped and maintenance work is performed on the inside of the oil storage and transportation device 2 to be cleaned.

Further, the resistance between the explosion lower limit detection device 13 and the ground is less than 10 ohms;

the nanoparticle 24 generator 12 is a portable nanoparticle 24 generator 12;

the oil gas inhibition surfactant is a nano oil gas inhibition surfactant; moreover, the oil gas inhibition surfactant is nontoxic, non-corrosive and degradable;

the pipeline connecting the nanometer particle 24 generator 12 with the fluid discharge pipeline 22 of the tank, the pipe and the cabin body is an anti-static pipeline; one end of the anti-static pipeline is connected with the nano-scale particle 24 generator 12, and the other end of the anti-static pipeline is connected with a fluid discharge pipeline 22 of a tank, a pipe and a cabin body of the oil storage and transportation device 2 to be cleaned;

the connection of the anti-static pipeline and the fluid discharge pipeline 22 is provided with a descending pipeline extending into the tank, pipe or cabin body.

Test experiments:

referring to fig. 2 and table 1, based on the maintenance method of the oil storage and transportation device 2 to be cleaned provided in the above embodiment, and based on the oil gas suppression system of the fuel oil storage tank, the pipeline, the oil tanker tank and the ship fuel tank, the system maintenance work is performed on the oil storage and transportation device 2 to be cleaned a, and the relationship between LEL and time therein is recorded. The specific experimental results are shown in the following table 1:

TABLE 1 LEL value versus time in A oil storage and transportation device 2 to be cleaned

When clearing up maintenance work, treat through the start and treat clean 2 oil gas fuel oil storage tanks of oil storage oil transportation device, pipeline, oil ship oil tank, boats and ships fuel tank oil gas suppression system, treat to A clean the oil storage oil transportation device 2 in the oil gas discharge and restrain to when reaching 0% LEL, remove and treat clean 2 top covers of oil storage oil transportation device, and clear up inside residual oil 25 and mud.

As can be seen from the data in table 1, at 19:56, and at 73 minutes of system operation, less than 10% LEL levels are achieved in the oil and gas handling device 2 to be cleaned; and reached a 0% LEL level at 20:40 and 117 minutes of system operation. Where the 0% LEL level continued to 23:00, the system was run for 197 minutes. I.e. 0% LEL duration of 80 minutes. The nanometer film oil gas inhibition surfactant is further proved to be effective in inhibiting the residual oil 25 of the fuel oil and LEL on the surface of oil stains in the oil storage and transportation device 2 by the nanometer particles 24 generated by the portable nanometer particle 24 generator 12.

In the description herein, references to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and it is not to be understood that the specific embodiments of the present invention are limited to these descriptions. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement.

Claims

1. A nano-film isolated oil-gas inhibition system is applied to cleaning and maintenance of an oil storage and transportation device to be cleaned; the oil storage and transportation device to be cleaned is provided with a containing body; the body that holds is connected with the fluid that can be used for admitting air and discharges into the pipeline to and can be used for the fluid discharge pipeline of exhaust, its characterized in that, oil gas suppression system is kept apart to nanometer membrane includes:

2. The nanomembrane isolated hydrocarbon suppression system of claim 1, wherein said nanoparticle generator further comprises a preparation chamber disposed within said generator body;

3. The nanomembrane sequestering hydrocarbon inhibition system of claim 1, wherein said hydrocarbon inhibition surfactant is a nanomembrane inhibition surfactant having non-toxic, non-corrosive, and degradable properties.

4. The nanomembrane sequestering oil and gas suppression system of claim 1, wherein the oil and gas suppression surfactant is an amphiphilic nanomembrane suppression surfactant comprising a hydrophilic group and a lipophilic group.

5. The nanomembrane isolated hydrocarbon suppression system of claim 1, further comprising a lower explosion limit detection device, wherein the lower explosion limit detection device comprises a detection host and a detection probe;

6. The nanomembrane isolated hydrocarbon suppression system of claim 5, wherein said oil containment and transportation device to be cleaned, said nanoparticle generator, and said lower explosion limit detection apparatus are all grounded via ground wires;

7. The nanomembrane isolated oil and gas suppression system of claim 1, wherein a conduit coupled between the nanoparticle generator and the fluid inlet conduit is an anti-static conduit.

8. The nanomembrane isolated oil and gas suppression system of claim 1, wherein the air compression device is a duplex air compressor.