Organic liquid evaporation inhibitor and method of inhibiting organic liquid evaporation

Abstract

The present application relates to volatile gas treatment technical field, disclose a kind of organic liquid volatilization inhibitor and the method for inhibiting organic liquid volatilization.The organic liquid volatilization inhibitor contains hollow microsphere, surfactant, stabilizer, dispersant, coupling agent and solvent, for inhibiting organic liquid volatilization;Wherein, the density of the organic liquid volatilization inhibitor < the density of the organic liquid.The density of the organic liquid volatilization inhibitor provided by the present application is less than volatile liquid, with certain fluidity and stability, can realize the automatic covering and complete sealing to volatile organic liquid surface, effectively prevent organic liquid volatilization during storage, loading and transportation.

Description

Technical Field

[0001] This invention relates to the field of volatile gas control technology, specifically to an organic liquid volatilization inhibitor and a method for inhibiting organic liquid volatilization. Background Technology

[0002] Existing atmospheric pressure storage tanks for volatile liquids are classified into internal floating roof tanks, external floating roof tanks, and dome-roof tanks. Among them, dome-roof tanks lack effective source control measures and require the use of interconnected pipelines to collect VOCs before centralized treatment with oil and gas recovery devices. However, this poses a safety risk of cascading fires after the tanks are interconnected, and its continued use is no longer recommended.

[0003] External floating roof tanks can only reduce VOC emissions at the source by using external floating roofs and sealing measures. However, large tanks are prone to deformation, and existing sealing materials cannot meet the needs of the deformation space, leading to incomplete sealing of the liquid surface and large-scale VOC emissions. On the other hand, during the up-and-down movement of the floating roof and high-efficiency seals, volatile liquids remain on the inner wall of the tank. Existing sealing measures cannot suppress the evaporation of these residual liquids, thus causing VOC emissions. Internal floating roof tanks use internal floating roofs and high-efficiency seals to suppress the evaporation of volatile liquids. However, due to tank deformation, oil buildup on the inner wall of the tank, and gaps in the connection of the internal floating roof, they cannot fundamentally suppress VOCs.

[0004] The above-mentioned floating roofs cannot fully contact the oil, and flash explosions caused by the presence of oil and gas have occurred many times during use. In addition, rigid floating roofs have also experienced accidents such as jamming and sinking many times during use, so the performance of floating roofs is not ideal.

[0005] During the transportation of large oil tankers, fluctuations in the oil level generate significant amounts of VOCs. Current practice involves inerting the vapor space above the oil tanker's storage tanks; however, this method cannot completely prevent VOC generation. Particularly during loading, according to relevant standards, the oxygen content in the ship-to-shore safety docking module at the oil tanker terminal must be less than 11%. Because many oil tankers lack the capacity for inerting, the oxygen content in the cargo hold exceeds this standard, rendering the on-shore or dockside oil and gas recovery devices ineffective, resulting in excessive VOC emissions during the loading process.

[0006] The maximum design pressure of the above-mentioned atmospheric pressure storage tanks is generally slightly positive pressure, which cannot effectively suppress the volatilization of oil products. There is an urgent need to develop a technology that is self-flowing, completely sealed, does not jam or sink, and effectively suppresses VOCs adhering to the wall. Summary of the Invention

[0007] The purpose of this invention is to overcome the problems of existing technologies, such as the difficulty in effectively suppressing VOCs volatilization when storing volatile organic liquids in atmospheric pressure tanks, the potential for various accidents during the use of internal and external floating roofs, and the difficulty in controlling VOCs volatilization during oil tanker loading and transportation. This invention provides an organic liquid volatilization inhibitor and a method for inhibiting organic liquid volatilization. The organic liquid volatilization inhibitor provided by this invention has a lower density than the volatile liquid, possesses certain fluidity and stability, and can achieve automatic coverage and complete sealing of the volatile organic liquid surface, effectively preventing volatilization of the organic liquid during storage, loading, and transportation.

[0008] To achieve the above objectives, the first aspect of the present invention provides an organic liquid evaporation inhibitor comprising hollow microspheres, a surfactant, a stabilizer, a dispersant, a coupling agent, and a solvent, for inhibiting the evaporation of organic liquids;

[0009] Wherein, the density of the organic liquid volatile inhibitor is less than the density of the organic liquid.

[0010] Preferably, the density of the organic liquid volatile inhibitor is 0.05 to 0.25 g / mL less than the density of the organic liquid.

[0011] Preferably, the density of the organic liquid volatile inhibitor is 0.3 to 0.64 g / mL.

[0012] Preferably, the solvent is water.

[0013] Preferably, the hollow microspheres are used in an amount of 3 to 20 parts by weight relative to 100 parts by weight of the solvent, more preferably 6 to 15 parts by weight.

[0014] Preferably, the density of the hollow microspheres is 0.05–0.6 g / mL, and more preferably 0.1–0.3 g / mL.

[0015] Preferably, the median particle size D50 of the hollow microspheres is 5–500 μm, and more preferably 10–100 μm.

[0016] Preferably, the hollow microspheres are made of soda lime borosilicate glass.

[0017] Preferably, the surfactant content is 0.01 to 6 parts by weight, more preferably 0.03 to 2 parts by weight, relative to 100 parts by weight of the solvent.

[0018] Preferably, the surfactant is a small molecule water-soluble surfactant with a molecular weight of 200 to 1000 and / or a high molecular weight water-soluble surfactant with a molecular weight of 8000 to 30000.

[0019] More preferably, the small molecule water-soluble surfactant is selected from at least one of sodium oleate, sodium laurylate, sodium stearate, sodium dodecylbenzene sulfonate, sodium dodecyl sulfate, octadecylamine, cocoylamine, and dodecylamine.

[0020] More preferably, the high molecular weight water-soluble surfactant is selected from at least one of polyacrylate and its derivatives, polyethyleneimine, polyvinylpyrrolidone, polyacrylamide and its derivatives, polyvinyl alcohol, polyoxyethylene polyoxypropylene ether, polyvinyl ether and fatty alcohol polyoxyethylene ether.

[0021] Preferably, the content of the stabilizer is 0.05 to 2 parts by weight, more preferably 0.2 to 1 part by weight, based on the weight of the solvent.

[0022] Preferably, the stabilizer is selected from cellulose compounds and / or starch.

[0023] More preferably, the cellulose compound is selected from at least one of methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxymethylcellulose, and hydroxypropylmethylcellulose.

[0024] Preferably, the content of the dispersant is 0.1 to 6 parts by weight, more preferably 0.5 to 3 parts by weight, relative to 100 parts by weight of the solvent.

[0025] Preferably, the dispersant is a cationic dispersant and / or a polymeric dispersant.

[0026] More preferably, the cationic dispersant is selected from at least one of amine salts, quaternary ammonium salts, and pyridinium salts.

[0027] More preferably, the polymeric dispersant is selected from at least one of polycaprolactone polyol-polyethyleneimine block copolymer dispersants, polyacrylic acid polymeric dispersants, polyurethane and polyester polyamide dispersants.

[0028] Preferably, the coupling agent content is 0.05 to 8 parts by weight relative to 100 parts by weight of the solvent, and more preferably 0.2 to 4 parts by weight.

[0029] Preferably, the coupling agent is selected from at least one of silane coupling agents, titanate coupling agents, aluminate coupling agents, zirconate coupling agents, and organic complexes.

[0030] Preferably, the organic liquid evaporation inhibitor further contains an antibacterial agent and / or a water-retaining agent.

[0031] Preferably, based on the total weight of the organic liquid volatile inhibitor, the content of the antibacterial agent is 0-1% by weight, preferably 0.04-0.2% by weight.

[0032] Preferably, the antibacterial agent is at least one selected from quaternary ammonium salt compounds, organohalides, and pyridine salt compounds.

[0033] Preferably, the water-retaining agent is selected from at least one of n-hexadecyl alcohol, n-octadecyl alcohol, and n-butanol;

[0034] Preferably, the thickness of the water-retaining agent above the surface of the organic liquid evaporation inhibitor is 3-4 mm.

[0035] Preferably, the viscosity of the organic liquid volatile inhibitor is <2000 cP, the conductivity is 1500-2500 PS / m, and the absolute value of the Zeta potential is 20-50 mV.

[0036] Preferably, the organic liquid is a petrochemical product, and more preferably gasoline.

[0037] A second aspect of the present invention provides a method for suppressing the volatilization of an organic liquid, the method comprising: delivering the aforementioned organic liquid volatilization inhibitor to the surface of the organic liquid.

[0038] Compared with the prior art, the present invention has at least the following advantages:

[0039] (1) The organic liquid evaporation inhibitor provided by this invention mainly consists of high-strength, low-density hollow microspheres and solvents, combined with surfactants, stabilizers, dispersants, and coupling agents. The resulting organic liquid evaporation inhibitor is a fluid floating material that can effectively cover and float on top of volatile organic liquids. Specifically, the density of the organic liquid evaporation inhibitor is lower than that of the volatile organic liquid, exhibiting certain fluidity and stability, enabling automatic coverage of the volatile organic liquid surface. This organic liquid evaporation inhibitor itself does not contain volatile VOCs and features low vapor pressure, low viscosity, low density, low permeability, and strong stability. It also possesses fluidity, conductivity, flame retardancy, and oleophobicity. Most importantly, in a preferred embodiment, when the solvent is water, the main component of the organic liquid evaporation inhibitor provided by this invention is inorganic and immiscible with organic liquids, thus not affecting the quality of various organic liquids during use.

[0040] (2) In practical applications, the method for suppressing the volatilization of organic liquids is simple to operate. It only requires the organic liquid volatilization inhibitor to be delivered above the volatile organic liquid through conventional methods, such as pumping or other means. The inhibitor can flow freely and spread above the organic liquid, covering the oil without dead zones. The inhibitor can fluctuate with the level of the organic liquid (which can be called a "liquid float"). Compared with various metal floats, such as aluminum alloy floats, fiberglass floats, and fully wetted floats, it can replace various rigid metal floats or be used in conjunction with existing fully wetted floats.

[0041] (3) After using the organic liquid evaporation inhibitor of the present invention, the concentration of VOCs above the surface of various organic liquids is always less than 1000 ppm (even less than 10 ppm), which is far less than the 2000 ppm requirement for fugitive emissions. With the original internal floating roof tanks, various floating roofs move up and down, causing organic liquids to remain on the inner wall of the tank, leading to VOCs evaporation. With the organic liquid evaporation inhibitor of the present invention, during the rise or fall of the liquid level, the inhibitor prevents the liquid from adhering to the inner wall of the tank. Because the inhibitor leaves a layer on the inner wall, and volatile organic liquids and the inhibitor are immiscible, it is difficult for organic liquids to adhere to the inner wall of the tank, thus solving the problem of excessive VOCs concentration caused by volatile liquids adhering to the wall. Depending on actual usage requirements, the thickness of the organic liquid evaporation inhibitor can be 1 cm or higher, with no height limit. This organic liquid evaporation inhibitor can effectively replace various internal floating roofs and efficient sealing measures, making the storage of various volatile organic liquids simpler, safer, and more convenient. During storage, it can effectively reduce VOCs evaporation, with a concentration of less than 1000 ppm. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the primary sealing of the external floating roof and the filling of the gas phase space of the rain shield with an organic liquid volatilization inhibitor.

[0043] Figure 2 This is a schematic diagram illustrating the use of organic liquid volatilization inhibitors in atmospheric pressure storage tanks such as fixed tanks and internal floating roof tanks.

[0044] Figure 3 This is a schematic diagram of the oil tanker loading or transportation process.

[0045] Figure 4 This is a SEM image of hollow microspheres.

[0046] Figure 5 This is a zeta potential test graph of inhibitor 1 prepared in Example 1. Detailed Implementation

[0047] The following provides a detailed description of specific embodiments of the present invention. It should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of the invention.

[0048] The endpoints and any values ​​of the ranges disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of the various ranges, the endpoint values ​​of the various ranges and individual point values, and individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed herein.

[0049] The organic liquid evaporation inhibitor provided by this invention comprises hollow microspheres, surfactants, stabilizers, dispersants, coupling agents, and solvents, and is used to inhibit the evaporation of organic liquids. Because it contains hollow microspheres, surfactants, stabilizers, dispersants, and coupling agents, the organic liquid evaporation inhibitor provided by this invention has the characteristics of low density, good flowability, strong stability, and excellent uniformity. In practical applications, as long as the density of the organic liquid evaporation inhibitor is less than the density of the organic liquid, the evaporation of the organic liquid can be effectively inhibited.

[0050] In this invention, the density of the organic liquid volatile inhibitor can be determined based on the type of organic liquid. In some embodiments, the organic liquid can be various petroleum products, such as refined oil products like gasoline, diesel, jet fuel, and MTBE, or various intermediate products like crude gasoline and crude diesel. In a more preferred embodiment, the organic liquid can be gasoline.

[0051] In some embodiments, the density of the organic liquid volatile inhibitor is generally 0.05 to 0.25 g / mL less than the density of the organic liquid, for example, 0.05 g / mL, 0.08 g / mL, 0.1 g / mL, 0.12 g / mL, 0.15 g / mL, 0.18 g / mL, 0.2 g / mL, or 0.25 g / mL. In a preferred embodiment, when the organic liquid is gasoline, the density of the organic liquid volatile inhibitor is 0.3 to 0.64 g / mL.

[0052] In this invention, the density of the organic liquid evaporation inhibitor can be controlled by controlling the content of the solvent and other components. In the organic liquid evaporation inhibitor of this invention, in order not to affect the quality of the organic liquid, in a preferred embodiment, the solvent is water.

[0053] In the organic liquid volatile inhibitor described in this invention, the hollow microspheres are the main component, and their content and density have a significant impact on the density of the organic liquid volatile inhibitor. The inventors have found through research that if the amount of hollow microspheres is too low, the stability and inhibitory effect of the inhibitor are poor. In some embodiments, the content of the hollow microspheres relative to 100 parts by weight of the solvent can be 3 to 20 parts by weight, preferably 6 to 15 parts by weight. In other embodiments, the density of the hollow microspheres can be 0.05 to 0.6 g / mL, preferably 0.1 to 0.3 g / mL.

[0054] In this invention, the hollow microspheres are preferably made of inorganic materials to ensure that the main component of the organic liquid volatilization inhibitor is an inorganic component, making the organic liquid volatilization inhibitor immiscible with the organic liquid, thus not affecting the quality of various volatile organic liquids. In one embodiment, the hollow microspheres are made of a material with the composition of soda lime borosilicate glass.

[0055] In some embodiments, the median particle size D50 of the hollow microspheres can be 5 to 500 μm, preferably 10 to 100 μm.

[0056] In the organic liquid evaporation inhibitor of the present invention, the amount of surfactant used relative to 100 parts by weight of the solvent is 0.01 to 6 parts by weight, preferably 0.03 to 2 parts by weight. In some embodiments, the surfactant may be a small molecule water-soluble surfactant with a molecular weight of 200 to 1000 and / or a high molecular weight water-soluble surfactant with a molecular weight of 8000 to 30000. In some preferred embodiments, the small molecule water-soluble surfactant may be selected from at least one of sodium oleate, sodium laurate, sodium stearate, sodium dodecylbenzenesulfonate, sodium dodecyl sulfate, octadecylamine, cocoylamine, and dodecylamine. In other preferred embodiments, the high molecular weight water-soluble surfactant is selected from at least one of polyacrylate and its derivatives, polyethyleneimine, polyvinylpyrrolidone, polyacrylamide and its derivatives, polyvinyl alcohol, polyoxyethylene polyoxypropylene ether, polyvinyl ether, and fatty alcohol polyoxyethylene ether.

[0057] In the organic liquid evaporation inhibitor of the present invention, the content of the stabilizer can be 0.05 to 2 parts by weight, preferably 0.2 to 1 part by weight, based on the weight of the solvent. In some preferred embodiments, in order to make the organic liquid evaporation inhibitor more stable and more effectively inhibit the evaporation of organic liquid, the stabilizer is selected from cellulosic compounds and / or starch. In some specific embodiments, the cellulosic compound can be selected from at least one of methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxymethylcellulose, and hydroxypropylmethylcellulose.

[0058] In the organic liquid evaporation inhibitor of the present invention, the content of the dispersant is 0.1 to 6 parts by weight, preferably 0.5 to 3 parts by weight, relative to 100 parts by weight of the solvent. In some preferred embodiments, in order to improve the uniformity of the organic liquid evaporation inhibitor, further improve the covering effect of the organic liquid evaporation inhibitor on the organic liquid, and reduce the evaporation of the organic liquid, the dispersant is a cationic dispersant and / or a polymeric dispersant. In some embodiments, the cationic dispersant is selected from at least one of amine salts, quaternary ammonium salts, and pyridinium salts. In other embodiments, the polymeric dispersant is selected from at least one of polycaprolactone polyol-polyethyleneimine block copolymer dispersants, polyacrylic acid polymeric dispersants, polyurethane and polyester polyamide dispersants.

[0059] In the organic liquid evaporation inhibitor described in this invention, the inventors have discovered through research that if the amount of coupling agent used is too low, the stability and inhibitory effect of the inhibitor are poor. In some embodiments, the content of the coupling agent relative to 100 parts by weight of the solvent can be 0.05 to 8 parts by weight, preferably 0.2 to 4 parts by weight. In this invention, the coupling agent can be a conventional choice in the art. In some embodiments, the coupling agent is selected from at least one of silane coupling agents, titanate coupling agents, aluminate coupling agents, zirconate coupling agents, and organic complexes.

[0060] In this invention, the organic liquid evaporation inhibitor also contains an antibacterial agent and / or a water-retaining agent.

[0061] To improve the antibacterial effect of the organic liquid evaporation inhibitor, the organic liquid evaporation inhibitor may contain an antibacterial agent. In some embodiments, based on the total weight of the organic liquid evaporation inhibitor, the content of the antibacterial agent may be 0-1% by weight, preferably 0.04-0.2% by weight. In a more preferred embodiment, the antibacterial agent is at least one selected from quaternary ammonium salt compounds, organohalides, and pyridinium salt compounds.

[0062] To reduce solvent loss, especially water evaporation, in the organic liquid evaporation inhibitor, maintain its stability, and improve its long-term effect on the organic liquid, the organic liquid evaporation inhibitor may contain a water-retaining agent. In some embodiments, the water-retaining agent is selected from at least one of n-hexadecyl alcohol, n-octadecyl alcohol, and n-butanol. In a more preferred embodiment, the thickness of the water-retaining agent above the surface of the organic liquid evaporation inhibitor may be 3–4 mm.

[0063] The organic liquid volatile inhibitor provided by this invention not only has low density, but also features low volatility, low viscosity, good conductivity, good flame retardancy, good oleophobicity, and good stability. In some embodiments, the volatility of the organic liquid volatile inhibitor at 25°C is ≤3.2 kPa, viscosity is <2000 cP, electrical conductivity is 1500–2500 PS / m, and absolute value of Zeta potential is 20–50 mV.

[0064] The present invention also provides a method for preparing an organic liquid volatile inhibitor. In one embodiment, the method for preparing the organic liquid volatile inhibitor includes: mixing hollow microspheres, a surfactant, a stabilizer, a dispersant, a coupling agent, a solvent, an optional antibacterial agent, and an optional water-retaining agent.

[0065] To improve the stability of the prepared organic liquid volatile inhibitor, operations can be performed in a specific sequence. In a preferred embodiment, the method for preparing the organic liquid volatile inhibitor includes:

[0066] (1) Add surfactant, stabilizer, dispersant and coupling agent to solvent to obtain mother liquor;

[0067] (2) Add the hollow microspheres to the mother liquor;

[0068] (3) Optionally, an antibacterial agent may be added to the product obtained in step (2);

[0069] (4) Optionally, the water-retaining agent is sprayed above the liquid surface of the product obtained in step (3), and the hydrophilic groups of the water-retaining agent are partially dissolved and floated in the inhibitor, while its hydrophobic groups float on the surface of the inhibitor.

[0070] The density of the organic liquid volatile inhibitor prepared according to the method of the present invention needs to be determined according to the organic liquid to be inhibited. If the volatile organic compounds of 92# gasoline are to be effectively inhibited, the density of the prepared organic liquid volatile inhibitor is preferably less than 0.65 g / mL.

[0071] The organic liquid volatile inhibitor prepared by this invention can be used to inhibit volatile liquids including various petrochemical products, specifically refined oil products such as gasoline, diesel, jet fuel, and MTBE; and various intermediate products such as crude gasoline and crude diesel, preferably gasoline. Applicable applications include fixed-roof tanks and internal floating-roof tanks (horizontal tanks, vertical tanks, underground tanks, and oil storage caverns). It can be used to replace existing floating roofs and high-efficiency seals, or simply to replace high-efficiency seals. During ship transportation, the organic liquid volatile inhibitor is placed above the level of the transported oil, preventing VOCs from evaporating even during rough seas. During oil tanker loading, the organic liquid volatile inhibitor floats above the oil, inhibiting the loading process and even eliminating the need for oil vapor recovery systems; the original air in the ship's hold can be directly released into the atmosphere without causing atmospheric pollution.

[0072] This invention also provides a method for suppressing the volatilization of organic liquids, the method comprising: delivering the aforementioned organic liquid volatilization inhibitor to the surface of the organic liquid. The organic liquid volatilization inhibitor and method of this invention can be used in fixed-roof tanks, in ship cabins, and in external floating roof tanks.

[0073] In the first embodiment, when used in a fixed-roof storage tank, the organic liquid evaporation inhibitor is first pumped into the tank. Then, volatile organic liquid is supplied to the tank via existing pipelines. Due to the buoyancy of the volatile organic liquid, the inhibitor naturally floats above the surface, adhering tightly to the tank wall and completely covering the surface, thus effectively inhibiting VOCs volatilization. As the oil level fluctuates due to feeding or discharging, the inhibitor moves with the liquid, maintaining a tight bond with the tank wall and surface. Furthermore, the overall structure of the inhibitor remains undamaged by surface fluctuations, effectively suppressing VOC volatilization.

[0074] In the second embodiment, when used inside the ship's hold, the organic liquid evaporation inhibitor is first pumped into the hold, followed by the loading of the volatile organic liquid. Due to the buoyancy of the volatile liquid, the organic liquid evaporation inhibitor naturally floats above the surface of the liquid, completely covering it and rising with the liquid level, thus effectively inhibiting the volatilization of VOCs from the volatile organic liquid. During oil tanker transport, the liquid level fluctuates with the waves, and the organic liquid evaporation inhibitor fluctuates with the liquid level, completely suppressing the volatilization of VOCs from the organic liquid.

[0075] In the third embodiment, refer to Figure 2In external floating roof tanks, the external floating roof, primary seal, and skimmer structure effectively prevent the evaporation of organic liquids. When a large external floating roof tank deforms or the elastic deformation of the primary seal is insufficient to maintain a fully sealed contact, VOCs will inevitably escape from the gaps. In this case, filling the space below the skimmer and above the primary seal with an organic liquid evaporation inhibitor allows the inhibitor to automatically fill the gaps when seal failure occurs, effectively solving the VOCs evaporation problem caused by seal failure. Figure 1 The red area represents the filling site for the organic liquid volatile inhibitor.

[0076] The use of the organic liquid volatilization inhibitor and the method for inhibiting organic liquid volatilization described in this invention will produce at least the following beneficial effects:

[0077] On the one hand, using organic liquid evaporation inhibitors to replace rigid floating roofs in internal floating roof tanks will eliminate jamming and sinking accidents; on the other hand, it will reduce the volume of the tank occupied by rigid floating roofs and supporting components, significantly improving the utilization rate of the oil storage volume. Figure 2 This diagram illustrates the use of organic liquid volatile inhibitors in atmospheric pressure storage tanks such as fixed tanks and internal floating roof tanks. VOCs leakage in internal floating roof tanks can be categorized into four types: wall adhesion loss, sealing loss, floating roof accessory loss, and floating roof gap loss. Among these, wall adhesion loss is currently unsolvable due to significant safety hazards associated with interconnecting tanks; sealing loss, caused by tank deformation and seal failure leading to VOCs leakage through gaps, is difficult to reverse after tank deformation, hence the lack of an effective solution; floating roof accessory loss also results in VOCs leakage due to unreliable and easily failed accessories; and floating roof gap loss, caused by loose bolt connections in the internal floating roof, can be addressed by methods such as full welding. The organic liquid volatile inhibitor in this invention can replace the rigid floating roof, preventing the formation of a gas phase space between the floating roof and the liquid surface, thus achieving intrinsic safety. Replacing the fully wetted floating roof and high-efficiency seals with the organic liquid volatile inhibitor can effectively solve the problem of localized VOCs leakage caused by tank deformation and seal failure. Meanwhile, the organic liquid evaporation inhibitor can cover the oil adhering to the tank wall, completely solving the VOCs leakage problem caused by oil adhering to the inner wall of the floating roof. In summary, three of the four types of VOCs leakage problems are difficult to solve. If the fully liquid-contacting oleophobic organic liquid evaporation inhibitor of this invention is used, the following problems are solved: wall adhering loss (oil cannot continue to adhere to the tank wall due to the presence of the oleophobic inhibitor material), gap loss (no gaps), floating roof accessories (no accessories), and sealing loss (the inhibitor is in full contact with the tank wall and oil). The VOCs leakage can be directly reduced from 25% VOL% to below 1000ppm, effectively solving the problem of excessive VOCs emissions from internal floating roof tanks.

[0078] Secondly, during the application of external floating roof tanks, organic liquid volatilization inhibitors can be filled in the space below the skid plate and above the primary seal. When gaps appear due to seal failure, the organic liquid volatilization inhibitors can automatically fill the gaps, effectively combining with the existing external floating roof, thereby solving the VOCs volatilization problem caused by seal failure.

[0079] Thirdly, when used inside the cabin ( Figure 3 Organic liquid volatile inhibitors can naturally float above the liquid surface and completely cover it. During oil loading and unloading, the organic liquid volatile inhibitors rise with the oil level, effectively inhibiting the volatilization of volatile liquid VOCs. During oil tanker transportation, the oil level fluctuates with the waves, and the organic liquid volatile inhibitors fluctuate with the level, completely suppressing the volatilization of oil VOCs.

[0080] The following examples further illustrate the organic liquid evaporation inhibitor and the method for inhibiting organic liquid evaporation according to the present invention. These examples are implemented based on the technical solution of the present invention, providing detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following examples.

[0081] Unless otherwise specified, the experimental methods used in the following embodiments are conventional methods in the art. Unless otherwise specified, the experimental materials used in the following embodiments are commercially available.

[0082] Surfactants that can be selected include Dow Chemical's OROTAN 731A (polyacrylate), Taiwan Chang Chun's BP24S (polyvinyl alcohol), BASF's Polymin SN, and BASF's Lutensol TO-8.

[0083] Hydroxyethyl cellulose can be selected from Akzo's EBS451FQ or Shin-Etsu's HX6000YG4.

[0084] Hydroxypropyl cellulose can be sourced from Aslan's HF Pharm.

[0085] Hydroxypropyl methylcellulose can be selected from Aslan's E4M Pharm and E10M Pharm CR;

[0086] Dispersants that can be selected include Evonik's TEGO Dispers 755W (polyacrylic acid), BASF's Disepex AA4040AS, and Sinopco's SN-THICKENER 5040A;

[0087] For polyester polyamides, BASF's Efka FA 4663AN can be selected;

[0088] Evonik's Dynasylan 4148 can be used as a silane coupling agent;

[0089] Organohalogenated antibacterial agents such as Dow Chemical's AMBERLITE KATHON LXE, whose main component is 5-chloro-2-methyl-4-isothiazolidin-3-one, can be selected.

[0090] Hollow microspheres are made of soda lime borosilicate glass material. HL15 (median particle size D50 of 80 μm, true density of 0.15 g / mL, hollow internal structure) from Zhengzhou Shenglait Hollow Microsphere New Material Co., Ltd., or K20HS (true density of 0.2 g / mL, hollow internal structure) from 3M brand can be selected.

[0091] Example 1

[0092] The preparation process of inhibitors:

[0093] (1) Take 1500g of deionized water, and add 0.15g of polyacrylate (OROTAN 731A from Dow Chemical), 0.4g of polyvinyl alcohol (BP 24S from Chang Chun Chemical in Taiwan), and 6g of hydroxyethyl cellulose (EBS451FQ from Akzo). Heat in an 80℃ water bath and stir at 300r / min for 30min. Then, add 15g of polyacrylic acid dispersant (TEGO Dispers 755W from Evonik) and continue stirring for 100min. Finally, cool to room temperature to obtain a viscous liquid.

[0094] (2) Add 20g of silane coupling agent (Evonik's Dynasylan 4148) to the viscous liquid to reduce the viscosity of the solution and increase the stability of the solution to obtain the mother liquor.

[0095] (3) Weigh 175g of hollow microspheres (HL15 from Zhengzhou Shenglait Hollow Microsphere New Material Co., Ltd.) Figure 4 (This is a scanning electron microscope image of hollow microspheres). The microspheres were added to the mother liquor and premixed at 100 rpm at room temperature. Then, the mixture was stirred at 1800 rpm for 15 min to uniformly disperse the hollow microspheres into the mother liquor, thus obtaining the inhibitor.

[0096] (4) In order to further reduce the impact of microorganisms on the quality of the inhibitor, 1g of antibacterial agent (Dow Chemical's AMBERLITE KATHON LXE) was added to the inhibitor, and finally inhibitor 1 was obtained.

[0097] Analysis showed that inhibitor 1 had a density of 0.56 g / mL, lower than that of gasoline and other petroleum products; its viscosity was 1236 cP, and its absolute zeta potential was 48.4 mV. Figure 5It has an electrical conductivity of 1990 PS / m and exhibits good fluidity, conductivity, and stability.

[0098] Methods to inhibit oil evaporation:

[0099] Take a 500mL wide-mouth bottle and measure 200mL of 92# gasoline (density 0.75g / mL). Then pour inhibitor 1 onto the surface of the 92# gasoline, and after it has completely spread on the surface, measure and ensure that the inhibitor thickness is 2cm. After leaving the bottle open for 4 hours, the VOCs concentration in the gas phase above the liquid surface is measured to be 286ppm. After leaving the bottle capped for 24 hours, the VOCs concentration in the gas phase above the liquid surface is measured to be 543ppm. After leaving the bottle capped for one week, the contact surface between the inhibitor and the 92# gasoline is clear, and the VOCs concentration in the gas phase is 663ppm, indicating that the inhibitor is stable.

[0100] Example 2

[0101] The preparation process of inhibitors:

[0102] (1) Take 1500g of deionized water, and add 0.25g of polyethyleneimine (BASF's Polymin SN), 0.35g of fatty alcohol polyoxyethylene ether (BASF's Lutensol TO-8), and 6.5g of hydroxyethyl cellulose (Shin-Etsu HX6000YG4 from Japan) in sequence. Heat in an 80℃ water bath and stir at 300r / min for 30min. Then, add 12g of polyacrylic acid dispersant (BASF's Disepex AA4040AS) and continue stirring for 100min. Finally, cool to room temperature to obtain a viscous liquid.

[0103] (2) Add 18g of silane coupling agent (Evonik's Dynasylan 4148) to the viscous liquid to reduce the viscosity of the solution and increase the stability of the solution to obtain the mother liquor.

[0104] (3) Weigh 160g of hollow microspheres (HL15 from Zhengzhou Shenglait Hollow Microsphere New Material Co., Ltd.), add them to the mother liquor, and premix them at 100r / min at room temperature. Then stir at 1800r / min for 15min to evenly disperse the hollow microspheres into the mother liquor to obtain the inhibitor.

[0105] (4) To further reduce the impact of microorganisms on the quality of the inhibitor, 1.5g of antibacterial agent (Dow Chemical's AMBERLITE KATHON LXE) was added to the inhibitor, and finally inhibitor 2 was obtained.

[0106] Analysis showed that inhibitor 2 has a density of 0.53 g / mL, which is lower than that of gasoline and other oil products; a viscosity of 1211 cP; an absolute value of zeta potential of 47.6 mV; and a conductivity of 1735 PS / m, exhibiting good fluidity, conductivity, and stability.

[0107] Methods to inhibit oil evaporation:

[0108] Take a 500mL wide-mouth bottle and measure 200mL of 92# gasoline (density 0.75g / mL). Then pour inhibitor 2 onto the surface of the 92# gasoline, and after it has completely spread on the surface, measure and ensure that the inhibitor thickness is 2cm. After leaving the bottle open for 4 hours, the VOCs concentration in the gas phase above the liquid surface is measured to be 302ppm. After leaving the bottle capped for 24 hours, the VOCs concentration in the gas phase above the liquid surface is measured to be 492ppm. After leaving the bottle capped for one week, the contact surface between the inhibitor and the 92# gasoline is clear, and the VOCs concentration in the gas phase is 593ppm, indicating that the inhibitor is stable.

[0109] Example 3

[0110] The preparation process of inhibitors:

[0111] (1) Take 1500g of deionized water, and add 0.2g of polyacrylate (OROTAN 731A from Dow Chemical), 0.55g of fatty alcohol polyoxyethylene ether (Lutensol TO-8 from BASF), and 5g of hydroxypropyl cellulose (HFPharm from Aslan). Heat in an 80℃ water bath and stir at 300r / min for 30min. Then, add 18g of polyacrylic acid dispersant (SN-THICKENER 5040A from Sanopco) and continue stirring for 100min. Finally, cool to room temperature to obtain a viscous liquid.

[0112] (2) Add 25g of silane coupling agent (Evonik's Dynasylan 4148) to the viscous liquid to reduce the viscosity of the solution and increase the stability of the solution to obtain the mother liquor.

[0113] (3) Weigh 210g of hollow microspheres (3M brand K20HS), add them to the mother liquor, and premix them at 100r / min at room temperature. Then stir at 1800r / min for 15min to evenly disperse the hollow microspheres into the mother liquor to obtain the inhibitor.

[0114] (4) To further reduce the impact of microorganisms on the quality of the inhibitor, 1.2g of antibacterial agent (Dow Chemical's AMBERLITE KATHON LXE) was added to the inhibitor, and finally inhibitor 3 was obtained.

[0115] Analysis showed that inhibitor 3 has a density of 0.59 g / mL, which is lower than that of gasoline and other oil products; its viscosity is 1428 cP; its absolute value of Zeta potential is 47.1 mV; and its conductivity is 1816 PS / m, indicating that it has good fluidity, conductivity and stability.

[0116] Methods to inhibit oil evaporation:

[0117] Take a 500mL wide-mouth bottle and measure 200mL of 92# gasoline (density 0.75g / mL). Then pour inhibitor 1 onto the surface of the 92# gasoline, and after it has completely spread on the surface, measure and ensure that the inhibitor thickness is 2cm. After leaving the bottle open for 4 hours, the VOCs concentration in the gas phase above the liquid surface is measured to be 166ppm. After leaving the bottle capped for 24 hours, the VOCs concentration in the gas phase above the liquid surface is measured to be 613ppm. After leaving the bottle capped for one week, the contact surface between the inhibitor and the 92# gasoline is clear, and the VOCs concentration in the gas phase is 671ppm, indicating that the inhibitor is stable.

[0118] Example 4

[0119] The preparation process of inhibitors:

[0120] The method of Example 1 was implemented, except that the polyvinyl alcohol in step (1) was changed to hydroxypropyl methylcellulose (E4M Pharm from Aslan), and the amount added was still 0.4g; the amount of hydroxyethyl cellulose added was changed to 3.5g, and the model was changed to EBS481FQ, and finally inhibitor 4 was obtained.

[0121] Analysis showed that inhibitor 4 has a density of 0.56 g / mL, which is lower than that of 92# gasoline and other oil products; a viscosity of 1236 cP, indicating good fluidity; and a zeta potential of 33.5 mV, indicating good stability.

[0122] Methods to inhibit oil evaporation:

[0123] Take a 500mL wide-mouth bottle and measure 200mL of 92# gasoline (density 0.75g / mL). Then pour inhibitor 4 onto the surface of the 92# gasoline, and after it has completely spread on the surface, measure and ensure that the inhibitor thickness is 2cm. After leaving the bottle open for 4 hours, the VOCs concentration in the gas phase above the liquid surface is measured to be 754ppm. After leaving the bottle covered for 24 hours, the VOCs concentration in the gas phase above the liquid surface is measured to be 853ppm. After leaving the bottle covered for one week, the VOCs concentration in the gas phase above the liquid surface is measured to be 942ppm.

[0124] Example 5

[0125] The preparation process of inhibitors:

[0126] The method of Example 1 was implemented, except that the hydroxyethyl cellulose in step (1) was changed to hydroxypropyl cellulose (E10M pharm CR of Aslan), the amount added was adjusted to 5g, and the amount of hollow microspheres added in step (3) was adjusted to 200g, and finally inhibitor 5 was obtained.

[0127] Analysis showed that inhibitor 5 has a density of 0.53 g / mL, which is lower than that of 92# gasoline and other oil products; its viscosity is 1343 cP, and its absolute Zeta potential is 35.7 mV, indicating good stability.

[0128] Methods to inhibit oil evaporation:

[0129] Take a 500mL wide-mouth bottle and measure 200mL of 92# gasoline (density 0.75g / mL). Then pour inhibitor 5 onto the surface of the 92# gasoline, controlling the inhibitor thickness to 2cm. After leaving the bottle open for 4 hours, the VOCs concentration in the gas phase above the gasoline surface was measured to be 863ppm. After leaving the bottle covered for one week, the VOCs concentration in the gas phase above the gasoline surface was measured to be 843ppm. The contact surface between the inhibitor and the 92# gasoline was clear, and the inhibitor showed stable properties.

[0130] Example 6

[0131] The preparation process of inhibitors:

[0132] The method of Example 1 was implemented, except that the amount of polyacrylic acid dispersant added in step (1) was adjusted to 10g, and finally inhibitor 6 was obtained.

[0133] Analysis showed that inhibitor 6 has a density of 0.54 g / mL, which is lower than that of 92# gasoline and other oil products; its viscosity is 1056 cP, and its absolute Zeta potential is 31.4 mV, indicating good fluidity and stability.

[0134] Methods to inhibit oil evaporation:

[0135] Take a 500mL wide-mouth bottle and measure 200mL of 92# gasoline (density 0.75g / mL). Then pour inhibitor 6 onto the surface of the 92# gasoline, and after it has completely spread on the surface, measure and ensure that the inhibitor thickness is 2cm. After leaving the bottle open for 4 hours, the VOCs concentration in the gas phase above the liquid surface is measured to be 512ppm. After leaving the bottle capped for 24 hours, the VOCs concentration in the gas phase above the liquid surface is measured to be 737ppm. After leaving the bottle capped for one week, the contact surface between the inhibitor and the 92# gasoline is clear, and the VOCs concentration in the gas phase is 923ppm, indicating that the inhibitor is stable.

[0136] Example 7

[0137] The preparation process of inhibitors:

[0138] The method of Example 1 was implemented, except that the amount of silane coupling agent added in step (2) was adjusted to 15g, and finally inhibitor 7 was obtained.

[0139] Analysis showed that the density of inhibitor 7 was 0.51 g / mL, which is lower than that of 92# gasoline and other oil products; its viscosity was 996 cP, and its absolute Zeta potential was 33.6 mV, indicating good fluidity and stability.

[0140] Methods to inhibit oil evaporation:

[0141] Take a 500mL wide-mouth bottle and measure 200mL of 92# gasoline (density 0.75g / mL). Then pour the fuel inhibitor 7 onto the surface of the 92# gasoline, and after it has completely spread on the surface, measure and ensure that the inhibitor thickness is 2cm. After leaving the bottle open for 4 hours, the VOCs concentration in the gas phase above the liquid surface is measured to be 468ppm. After leaving the bottle capped for 24 hours, the VOCs concentration in the gas phase above the liquid surface is measured to be 585ppm. After leaving the bottle capped for one week, the contact surface between the inhibitor and the 92# gasoline is clear, and the VOCs concentration in the gas phase is 730ppm, indicating that the inhibitor is stable.

[0142] Example 8

[0143] The preparation process of inhibitors:

[0144] The method of Example 1 was implemented, except that the polyacrylic acid dispersant (Evonik's TEGODispers 755W) in step (1) was changed to a polyester polyamide dispersant (BASF's Efka FA 4663AN), and finally inhibitor 8 was obtained.

[0145] Analysis showed that inhibitor 8 has a density of 0.51 g / mL, which is lower than that of 92# gasoline and other oil products; its viscosity is 600 cP, and its absolute zeta potential is 33.1 mV, indicating good fluidity and stability.

[0146] Methods to inhibit oil evaporation:

[0147] Take a 500mL wide-mouth bottle and measure 200mL of 92# gasoline (density 0.75g / mL). Then pour inhibitor 8 onto the surface of the 92# gasoline, controlling the inhibitor thickness to 2cm. After leaving the bottle open for 4 hours, the VOCs concentration in the gas phase above the gasoline surface was measured to be 751ppm. After leaving the bottle covered for one week, the contact surface between the inhibitor and the 92# gasoline was clear, and the VOCs concentration in the gas phase was 783ppm, indicating that the inhibitor was stable.

[0148] Example 9

[0149] The preparation process of inhibitors:

[0150] The method of Example 8 was implemented, except that the amount of polyester polyamide dispersant (BASF's Efka FA 4663AN) added in step (1) was adjusted to 18g, and finally inhibitor 9 was obtained.

[0151] Analysis showed that the density of inhibitor 9 was 0.58 g / mL, which is lower than that of 92# gasoline and other oil products; its viscosity was 1209 cP, and its absolute value of the Zeta potential was 42.2 mV.

[0152] Methods to inhibit oil evaporation:

[0153] Take a 500mL wide-mouth bottle and measure 200mL of 92# gasoline (density 0.75g / mL). Then pour the fuel inhibitor 9 onto the surface of the 92# gasoline, and after it has completely spread on the surface, measure and ensure that the inhibitor thickness is 2cm. After leaving the bottle open for 4 hours, the VOCs concentration in the vapor space above the liquid surface is measured to be 628ppm. After leaving the bottle capped for 24 hours, the VOCs concentration in the vapor space above the liquid surface is measured to be 815ppm. After leaving the bottle capped for one week, the contact surface between the inhibitor and the 92# gasoline is clear, and the VOCs concentration in the vapor space is 903ppm, indicating that the inhibitor is stable.

[0154] Scaled-up Example 1

[0155] The method of Example 1 was followed, except that the amount of feed added in the preparation process was increased by 4 times proportionally, that is, the amount of water, surfactant, stabilizer, dispersant, coupling agent, hollow microspheres and antibacterial agent were all increased by 4 times, and finally inhibitor 10 was obtained.

[0156] Analysis showed that the density of inhibitor 10 was 0.55 g / mL, which is lower than that of 92# gasoline and other oil products; its viscosity was 1201 cP, and its absolute value of Zeta potential was 46.3 mV, indicating good fluidity and stability.

[0157] Methods to inhibit oil evaporation:

[0158] Take a 10L wide-mouth bottle and measure 6L of 92# gasoline (density 0.75g / mL). Then pour the fuel inhibitor 10 onto the surface of the 92# gasoline, ensuring it spreads completely and measuring a thickness of 4cm. After leaving the bottle open for 4 hours, the VOCs concentration in the vapor space above the gasoline surface is measured to be 462ppm. After leaving the bottle capped for 24 hours, the VOCs concentration in the vapor space above the gasoline surface is measured to be 759ppm. After leaving the bottle capped for one week, the contact surface between the inhibitor and the 92# gasoline is clear, and the VOCs concentration in the vapor space is 819ppm, indicating stable inhibitor properties. Finally, take 2L of 92# gasoline and send it for quality testing. The results show that the water content, gum content, and aromatic hydrocarbon content in the 92# gasoline are all within the standard limits, and the octane number of the 92# gasoline meets the standard. The above test results indicate that long-term contact between the inhibitor and 92# gasoline will not affect the quality of the 92# gasoline.

[0159] Scaled-up Example 2

[0160] The preparation process of inhibitors:

[0161] The method of Example 1 was implemented, except that the amount of materials added in the preparation process was increased by 100 times proportionally, that is, the amount of water, surfactant, stabilizer, dispersant, coupling agent, hollow microspheres and antibacterial agent were all increased by 100 times, and finally inhibitor 11 was obtained.

[0162] Analysis showed that inhibitor 11 has a density of 0.56 g / mL, which is lower than that of 92# gasoline and other oil products; its viscosity is 1312 cP, and its absolute Zeta potential is 45.1 mV, indicating good fluidity and stability.

[0163] Methods to inhibit oil evaporation:

[0164] Take 3m 3 Open storage tank, with 2m of fill at the bottom 3 Tap water was poured in, and 92# gasoline (density 0.75 g / mL) was added on top, ensuring the gasoline surface was approximately 10 cm thick. Then, fuel inhibitor 11 was poured on top of the gasoline surface, and after it had completely spread, the thickness of the inhibitor was measured to be approximately 3 cm. After leaving the container open for 4 hours, the VOC concentration in the vapor space above the gasoline surface was measured to be 495 ppm. The container was then covered, and after leaving the container open for 24 hours, the VOC concentration in the vapor space above the gasoline surface was measured to be 542 ppm.

[0165] Then, water was pumped out and injected from the bottom of the tank to simulate the rise and fall of the oil level. During the rise and fall of the oil level, the VOC concentration in the gas phase space above the liquid surface was measured to be below 900 ppm, and a small amount of inhibitor was found to cover the tank wall. No VOC exceedances were observed due to oil adhering to the wall. Large-scale experiments show that this inhibitor has great commercial application value.

[0166] Comparative Example 1

[0167] The method of Example 1 was implemented, except that hollow microspheres were not added.

[0168] The preparation process of inhibitors:

[0169] (1) Take 1500g of deionized water, and add 0.15g of polyacrylate (OROTAN 731A from Dow Chemical), 0.4g of polyvinyl alcohol (BP 24S from Chang Chun Chemical in Taiwan), and 6g of hydroxyethyl cellulose (EBS451FQ from Akzo). Heat in an 80℃ water bath and stir at 300r / min for 30min. Then, add 15g of polyacrylic acid dispersant (TEGO Dispers 755W from Evonik) and continue stirring for 100min. Finally, cool to room temperature to obtain a viscous liquid.

[0170] (2) Add 20g of silane coupling agent (Evonik's Dynasylan 4148) to the viscous liquid to reduce the viscosity of the solution and increase the stability of the solution to obtain the mother liquor.

[0171] (3) In order to further reduce the impact of microorganisms on the quality of the inhibitor, 1g of antibacterial agent (Dow Chemical's AMBERLITE KATHON LXE) was added to the inhibitor, and finally inhibitor 12 was obtained.

[0172] Analysis showed that the density of inhibitor 12 was 0.97 g / mL, which is greater than that of gasoline and other oil products. The density of this inhibitor is too high, making it difficult for it to float on the surface of gasoline.

[0173] Methods to inhibit oil evaporation:

[0174] Take a 500mL wide-mouth bottle and measure 200mL of 92# gasoline (density is 0.75g / mL). Then pour the oil inhibitor 12 above the surface of the 92# gasoline. The inhibitor 12 sinks to the bottom of the 92# gasoline and cannot float to the top of the 92# gasoline, so it has no effect on inhibiting the volatilization of 92# gasoline.

[0175] Comparative Example 2

[0176] Take 1500g of deionized water and weigh 175g of hollow microspheres (HL15 from Zhengzhou Shenglait Hollow Microsphere New Material Co., Ltd., with a median particle size (D50) of 80μm, a true density of 0.15g / mL, and an internal hollow structure). Premix the two at 100r / min at room temperature, and then stir at 1800r / min for 15min to disperse the hollow microspheres in the deionized water to obtain inhibitor 13.

[0177] After 10 minutes of storage, the hollow glass microspheres of inhibitor 13 separated from the aqueous phase, indicating that the inhibitor was unstable and could not effectively inhibit the volatilization of oil.

[0178] The preferred embodiments of the present invention have been described in detail above; however, the present invention is not limited thereto. Within the scope of the inventive concept, various simple modifications can be made to the technical solutions of the present invention, including combinations of various technical features in any other suitable manner. These simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. An organic liquid evaporation inhibitor, characterized by, This organic liquid evaporation inhibitor contains hollow microspheres, surfactants, stabilizers, dispersants, coupling agents, and solvents, and is used to inhibit the evaporation of organic liquids. Wherein, the density of the organic liquid volatile inhibitor is less than the density of the organic liquid.

2. The organic liquid volatile inhibitor according to claim 1, characterized in that, The density of the organic liquid volatile inhibitor is 0.05–0.25 g / mL less than the density of the organic liquid; Preferably, the density of the organic liquid volatile inhibitor is 0.3 to 0.64 g / mL.

3. The organic liquid volatile inhibitor according to claim 1 or 2, characterized in that, The solvent is water.

4. The organic liquid volatile inhibitor according to any one of claims 1-3, characterized in that, The amount of hollow microspheres used relative to 100 parts by weight of the solvent is 3 to 20 parts by weight, preferably 6 to 15 parts by weight; Preferably, the density of the hollow microspheres is 0.05–0.6 g / mL, more preferably 0.1–0.3 g / mL; Preferably, the median particle size D50 of the hollow microspheres is 5–500 μm, and more preferably 10–100 μm; Preferably, the hollow microspheres are made of soda lime borosilicate glass.

5. The organic liquid volatile inhibitor according to any one of claims 1-4, characterized in that, The content of the surfactant is 0.01 to 6 parts by weight, preferably 0.03 to 2 parts by weight, relative to 100 parts by weight of the solvent. Preferably, the surfactant is a small molecule water-soluble surfactant with a molecular weight of 200 to 1000 and / or a high molecular weight water-soluble surfactant with a molecular weight of 8000 to 30000. More preferably, the small molecule water-soluble surfactant is selected from at least one of sodium oleate, sodium laurylate, sodium stearate, sodium dodecylbenzene sulfonate, sodium dodecyl sulfate, octadecylamine, cocoylamine, and dodecylamine; More preferably, the high molecular weight water-soluble surfactant is selected from at least one of polyacrylate and its derivatives, polyethyleneimine, polyvinylpyrrolidone, polyacrylamide and its derivatives, polyvinyl alcohol, polyoxyethylene polyoxypropylene ether, polyvinyl ether and fatty alcohol polyoxyethylene ether.

6. The organic liquid volatile inhibitor according to any one of claims 1-5, characterized in that, Based on the weight of the solvent, the content of the stabilizer is 0.05 to 2 parts by weight, preferably 0.2 to 1 part by weight; Preferably, the stabilizer is selected from cellulose compounds and / or starch; More preferably, the cellulose compound is selected from at least one of methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxymethylcellulose, and hydroxypropylmethylcellulose.

7. The organic liquid volatile inhibitor according to any one of claims 1-6, characterized in that, The content of the dispersant is 0.1 to 6 parts by weight, preferably 0.5 to 3 parts by weight, relative to 100 parts by weight of the solvent. Preferably, the dispersant is a cationic dispersant and / or a polymeric dispersant; More preferably, the cationic dispersant is selected from at least one of amine salts, quaternary ammonium salts, and pyridinium salts; More preferably, the polymeric dispersant is selected from at least one of polycaprolactone polyol-polyethyleneimine block copolymer dispersants, polyacrylic acid dispersants, polyurethane and polyester polyamide dispersants.

8. The organic liquid volatile inhibitor according to any one of claims 1-7, characterized in that, The content of the coupling agent relative to 100 parts by weight of the solvent is 0.05 to 8 parts by weight, preferably 0.2 to 4 parts by weight; Preferably, the coupling agent is selected from at least one of silane coupling agents, titanate coupling agents, aluminate coupling agents, zirconate coupling agents, and organic complexes.

9. The organic liquid volatile inhibitor according to any one of claims 1-8, characterized in that, The organic liquid evaporation inhibitor also contains antibacterial agents and / or water-retaining agents.

10. The organic liquid volatile inhibitor according to claim 9, characterized in that, Based on the total weight of the organic liquid volatile inhibitor, the content of the antibacterial agent is 0-1% by weight, preferably 0.04-0.2% by weight; Preferably, the antibacterial agent is at least one selected from quaternary ammonium salt compounds, organohalides, and pyridine salt compounds.

11. The organic liquid evaporation inhibitor according to claim 9 or 10, characterized in that, The water-retaining agent is selected from at least one of n-hexadecyl alcohol, n-octadecanol and n-butanol; Preferably, the thickness of the water-retaining agent above the surface of the organic liquid evaporation inhibitor is 3-4 mm.

12. The organic liquid volatile inhibitor according to any one of claims 1-11, characterized in that, The organic liquid volatile inhibitor has a viscosity of <2000 cP, an electrical conductivity of 1500–2500 PS / m, and an absolute value of 20–50 mV for its zeta potential.

13. The organic liquid volatile inhibitor according to any one of claims 1-12, characterized in that, The organic liquid is a petrochemical product, preferably gasoline.

14. A method for suppressing the volatilization of organic liquids, characterized in that, The method includes delivering the organic liquid evaporation inhibitor according to any one of claims 1-13 above the surface of the organic liquid.

Images