CN115160891A - Construction method of salt cavern inner wall flora breeding coating - Google Patents

Construction method of salt cavern inner wall flora breeding coating Download PDF

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CN115160891A
CN115160891A CN202210920350.4A CN202210920350A CN115160891A CN 115160891 A CN115160891 A CN 115160891A CN 202210920350 A CN202210920350 A CN 202210920350A CN 115160891 A CN115160891 A CN 115160891A
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salt
salt cavern
construction method
coating
wall
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CN115160891B (en
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徐俊辉
王卫东
陆佳敏
陈留平
赵云松
王浩
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China Salt Cave Comprehensive Utilization Co ltd
China Salt Jintan Co Ltd
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China Salt Cave Comprehensive Utilization Co ltd
China Salt Jintan Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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    • C09D7/63Additives non-macromolecular organic
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    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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    • C09D7/70Additives characterised by shape, e.g. fibres, flakes or microspheres
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract

The invention discloses a construction method of a flora breeding coating on the inner wall of a salt cavern. The construction method of the flora propagation coating on the inner wall of the salt cavern comprises the steps of loading a coupling agent on the inner wall of the salt cavern, preparing a hydrophobic porous material oil-floating layer containing the colonies, and coating the hydrophobic porous material oil-floating layer containing the colonies on the middle layer and the top of the inner wall of the salt cavern. The method has reasonable design and simple and convenient operation, the rock wall is coated with the flora breeding coating, and the hydrophobic porous material for preparing methane bacteria is coated on the surface of the salt cavern, so that the flora can grow in the high-salt environment of the salt cavern; in addition, the flora is isolated from the high-salt environment through the flora breeding coating, so that the flora can survive and breed in a mild environment, and further the carbon dioxide and the hydrogen can be stably prepared into the methane gas.

Description

Construction method of salt cavern inner wall flora breeding coating
Technical Field
The invention relates to the technical field of hydrogen energy storage, in particular to a construction method of a salt cavern inner wall flora breeding coating.
Background
The underground storage of hydrogen is continuously explored and researched by various countries, artificial gas is prepared by mixing 50-60% of hydrogen and methane in the early stage and is injected into an underground storage, and the underground storage of pure hydrogen (95% of hydrogen and 3-4% of carbon dioxide) is also developed in the later stage. At present, in order to deal with the energy crisis, energy strategic reserve strategies are actively implemented by all countries, an underground salt cavern reserve bank is the most important ring in energy strategic reserve work, and a salt rock underground reserve bank has the advantages of large storage capacity, high peak regulation speed, safety, economy and the like, is an internationally recognized underground storage place with the best strategic energy sources such as natural gas, petroleum and the like, and in recent years, the construction of an underground salt cavern hydrogen storage system is rapidly developed in China, so that the underground salt cavern hydrogen storage system has very important guiding significance for the storage and application of hydrogen in the future of China.
However, the storage of hydrogen in the salt cavern is difficult, high pressure and high sealing are needed, and the requirement on the storage environment is high. Moreover, the existing underground salt cavern hydrogen storage system cannot realize the mixed storage of methane and hydrogen, and is inconvenient to store.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: overcomes the defects in the prior art and provides a construction method of a flora breeding coating on the inner wall of a salt cavern.
The technical scheme adopted by the invention for solving the technical problems is as follows: a construction method of a salt cavern inner wall flora breeding coating specifically comprises the following steps:
s1, loading a coupling agent on the inner wall of a salt cavern: adding a silane coupling agent and hydrazine into salt cavities filled with brine, standing for 48 hours, discharging the brine, and standing for 3-5 days; introducing gas into the salt cavern filled with the salt water, and discharging the salt water;
s2, preparing a bacterial colony-containing hydrophobic porous material floating oil layer: in an anaerobic environment, uniformly stirring low-molecular-weight epoxy resin, an inactive diluent, a plasticizer and a fiber reinforced material, and finally adding a colony-containing hydrophobic porous material;
and S3, coating the middle layer and the top of the inner wall of the salt cavern.
Further, the S3 specifically includes the following steps:
s31, adding a bacterial colony-containing hydrophobic porous material oil-floating layer into saturated saline water to prepare a saline water coating, wherein the bacterial colony-containing hydrophobic porous material floats on the surface of the saturated saline water in an initial state of the oil-floating layer;
s32, injecting the saline coating prepared in the step S31 into the salt cavern, wherein the hydrophobic porous material in the hydrophobic porous material oil-floating layer containing the bacterial colonies is slowly attached to the inner surface of the salt cavern along with the low-molecular-weight epoxy resin along with the gradual rise of the saline liquid level, and the hydrophobic porous material oil-floating layer containing the bacterial colonies floats on the surface of saturated saline;
s33, extracting the mixed floating oil layer: the mixed floating oil layer is pumped out by adopting a water injection external beating method, and the method specifically comprises the following steps: 2 sleeves are arranged in the cavity manufacturing process by a water-soluble method, the inner pipe is used for feeding water and the outer pipe is used for discharging brine, a floating oil layer is required to be discharged, saturated brine is required to be injected into a salt cavity through the inner pipe, the liquid level of the brine is raised, and finally the top of the mixed floating oil layer is discharged out of a salt cave;
s34, adding a curing agent to float the oil layer: after the mixed floating oil layer is completely pumped out, pumping out a part of saturated salt water through the inner pipe, and then injecting a curing agent floating oil layer through the outer pipe, thereby completing the addition of the curing agent floating oil layer;
s35, introducing gas into the salt cavity to discharge the brine, and gradually reducing the liquid level of the curing agent floating oil layer to combine the low-molecular-weight epoxy resin coating and the curing agent to finish curing; after standing for 1 week, curing the low molecular weight epoxy resin on the surface of the salt cavern to form a film; finally, pumping out all surface liquid in the salt cavern; the gas used for discharging the brine is pure hydrogen, pure carbon dioxide or a mixture of the two.
Further, the gas in the S1 is hydrogen, carbon dioxide or a mixture of the hydrogen and the carbon dioxide.
Further, the weight parts of the low-molecular-weight epoxy resin, the non-reactive diluent, the plasticizer, the fiber reinforcing material and the colony-containing hydrophobic porous material in the S2 are as follows:
Figure BDA0003777060170000031
further, the low-molecular-weight epoxy resin in S2 is one or two of bisphenol A epoxy resin, bisphenol F epoxy resin and bisphenol F/A copolymer epoxy resin, and the low-molecular-weight epoxy resin has a molecular weight not higher than 260 and a density not lower than 1.33g/mL; the non-reactive diluent is one of dimethyl collar benzene dibutyl ester, dioctyl ester, xylene, turpentine and coal tar; the plasticizer is one of epoxidized cardanol, polypropylene glycol diglycidyl ether and polymerized fatty acid polyglycidyl ester; the fibrous reinforcement is chopped fibers.
Further, the fiber reinforced material is one of glass fiber, aramid fiber, carbon fiber, ultra-high molecular weight polyethylene fiber and boron fiber.
Further, the curing agent oil-floating layer in the S34 is alicyclic amine or aromatic amine.
Further, the alicyclic amine is bis (4-amino-3-methylcyclohexyl) methylamine or bis (4-aminocyclohexyl) methane; the aromatic amine is m-xylylenediamine, diaminodiphenylmethane or diaminodiphenylsulfone.
The invention has the beneficial effects that: the method has reasonable design and simple and convenient operation, the rock wall is coated with the flora breeding coating, and the hydrophobic porous material for preparing methane bacteria is coated on the surface of the salt cavern, so that the flora can grow in the high-salt environment of the salt cavern; in addition, the flora is isolated from the high-salt environment through the flora breeding coating, so that the flora can survive and breed in a mild environment, and further the carbon dioxide and the hydrogen can be stably prepared into the methane gas.
Drawings
The invention is further illustrated by the following examples in conjunction with the drawings.
FIG. 1 is a process diagram of adding a silane coupling agent and hydrazine in S1 of example 1;
FIG. 2 is a process diagram of S32 in example 1;
FIG. 3 is a process diagram of S34 in example 1;
FIG. 4 is a process diagram of S35 in example 1;
in the figure: 1. salt cavern, 2 technical casing, 3 surface casing, 4 technical casing inlet and outlet valves, 5 surface casing inlet and outlet valves, 6 saline solution, 7 saturated saline, 8 bacterial colony-containing hydrophobic porous material floating oil layer, 9 curing agent floating oil layer and 10 flora breeding coating.
Detailed Description
The invention will now be described in further detail with reference to the drawings and preferred embodiments. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
A construction method of a salt cavern inner wall flora breeding coating specifically comprises the following steps:
s1, loading a coupling agent on the inner wall of a salt cavern: adding a silane coupling agent and hydrazine into salt cavities filled with brine, standing for 48 hours, discharging the brine, and standing for 3-5 days; introducing gas into salt cavern filled with salt water, wherein the salt water can be discharged, and the gas is pure hydrogen, pure carbon dioxide or a mixture of the pure hydrogen and the pure carbon dioxide;
s2, preparing a bacterial colony-containing hydrophobic porous material floating oil layer: in an anaerobic environment, uniformly stirring low-molecular-weight epoxy resin, an inactive diluent, a plasticizer and a fiber reinforced material, and finally adding a colony-containing hydrophobic porous material; the weight parts of the low molecular weight epoxy resin, the non-reactive diluent, the plasticizer, the fiber reinforced material and the hydrophobic porous material containing the bacterial colony are as follows:
Figure BDA0003777060170000051
s3, coating the middle layer and the top of the inner wall of the salt cavern; the method specifically comprises the following steps:
s31, adding a bacterial colony-containing hydrophobic porous material oil-floating layer into saturated saline water to prepare a saline water coating, wherein the bacterial colony-containing hydrophobic porous material floats on the surface of the saturated saline water in an initial state of the oil-floating layer;
s32, injecting the saline coating prepared in the step S31 into the salt cavern, wherein the hydrophobic porous material in the hydrophobic porous material oil-floating layer containing the bacterial colonies is slowly attached to the inner surface of the salt cavern along with the low-molecular-weight epoxy resin along with the gradual rise of the saline liquid level, and the hydrophobic porous material oil-floating layer containing the bacterial colonies floats on the surface of saturated saline;
s33, extracting the mixed floating oil layer: the mixed floating oil layer is pumped out by adopting a water injection external beating method, and the method specifically comprises the following steps: 2 sleeves are arranged in the cavity manufacturing process by a water-soluble method, the water inlet outer pipe of the inner pipe discharges brine, a floating oil layer to be discharged firstly needs to inject saturated brine into a salt cavity through the inner pipe, and finally the top of the mixed floating oil layer is discharged out of a salt cave by raising the liquid level of the brine;
s34, adding a curing agent floating oil layer: after the mixed floating oil layer is completely pumped out, pumping out a part of saturated salt water through the inner pipe, and then injecting a curing agent floating oil layer through the outer pipe, thereby completing the addition of the curing agent floating oil layer;
s35, introducing gas into the salt cavern to discharge the saline water, and gradually reducing the liquid level of the curing agent floating oil layer to combine the low-molecular-weight epoxy resin coating and the curing agent to finish curing; after standing for 1 week, curing the low molecular weight epoxy resin on the surface of the salt cavern to form a film; finally, pumping out all surface liquid in the salt cavern; the gas used for discharging the brine is pure hydrogen, pure carbon dioxide or a mixture of the two.
S2, the low-molecular-weight epoxy resin is one or two of bisphenol A epoxy resin, bisphenol F epoxy resin and bisphenol F/A copolymerized epoxy resin, and the low-molecular-weight epoxy resin has a molecular weight not higher than 260 and a density not lower than 1.33g/mL; the non-reactive diluent is one of dimethyl collar benzene dibutyl ester, dioctyl ester, xylene, turpentine and coal tar; the plasticizer is one of epoxidized cardanol, polypropylene glycol diglycidyl ether and polymerized fatty acid polyglycidyl ester; the fibrous reinforcement is chopped fibers.
The fiber reinforced material is one of glass fiber, aramid fiber, carbon fiber, ultrahigh molecular weight polyethylene fiber and boron fiber.
In S34, the curing agent floating oil layer is alicyclic amine or aromatic amine, and the alicyclic amine is bis (4-amino-3-methylcyclohexyl) methylamine or bis (4-aminocyclohexyl) methane; the aromatic amine is m-xylylenediamine, diaminodiphenylmethane or diaminodiphenylsulfone.
Example 1
A construction method of a salt cavern inner wall flora breeding coating specifically comprises the following steps:
s1, loading a coupling agent on the inner wall of a salt cavern: adding a silane coupling agent and hydrazine into the salt cavern 1 filled with the salt solution 6, standing for 48 hours, discharging the salt solution, and standing for 3 days, wherein the salt solution is shown in figure 1; introducing gas into the salt cavern 1 filled with the brine, and discharging the brine, wherein the gas is pure hydrogen;
s2, preparing a bacterial colony-containing hydrophobic porous material floating oil layer 8: in an anaerobic environment, uniformly stirring bisphenol A epoxy resin, dimethyl-p-phenylene dibutyl ester, epoxidized cardanol and glass fiber, and finally adding a colony-containing hydrophobic porous material; the weight parts of the bisphenol A type epoxy resin, the dimethyl-p-xylylene dibutyl ester, the epoxidized cardanol, the glass fiber and the colony-containing hydrophobic porous material are as follows:
Figure BDA0003777060170000061
s3, coating the middle layer and the top of the inner wall of the salt cavern; the method specifically comprises the following steps:
s31, adding a bacterial colony-containing hydrophobic porous material oil-floating layer 8 into saturated saline water 7 to prepare a saline water coating, wherein the bacterial colony-containing hydrophobic porous material oil-floating layer 8 floats on the surface of the saturated saline water 7 in an initial state;
s32, injecting the saline coating prepared in the step S31 into the salt cavern 1, wherein the bacterial colony-containing hydrophobic porous material floating oil layer 8 floats on the surface of the saturated saline 7 along with the gradual rise of the liquid level of the saturated saline 7, the liquid level of the bacterial colony-containing hydrophobic porous material floating oil layer 8 is also gradually raised, and the hydrophobic porous material in the bacterial colony-containing hydrophobic porous material floating oil layer 8 is slowly attached to the inner surface of the salt cavern 1 along with the low-molecular-weight epoxy resin, as shown in the figure 2, wherein the arrow direction in the figure is the liquid level rising direction;
s33, extracting the mixed floating oil layer: the mixed floating oil layer is pumped out by adopting a water injection external beating method, and the method specifically comprises the following steps: the method comprises the following steps that 2 sleeves are arranged in a cavity manufacturing process by a water dissolution method, the 2 sleeves are a technical sleeve 2 and a surface sleeve 3, the inner pipe technical sleeve 2 is used for water inflow, the outer pipe surface sleeve 3 is used for discharging brine, a bacterial colony-containing hydrophobic porous material floating oil layer 8 needs to be discharged, saturated saline water 7 needs to be injected into a salt cavity through the inner pipe technical sleeve 2, finally, a mixed floating oil layer is discharged out of a salt cave through the top of the surface sleeve 3 by raising the level of the saline water, a technical sleeve inlet and outlet valve 4 is arranged on the technical sleeve 2, and a surface sleeve inlet and outlet valve 5 is arranged on the surface sleeve 3;
s34, adding a curing agent floating oil layer: after the mixed floating oil layer is completely pumped out, a part of saturated saline water 7 is pumped out through the inner tube technical casing 2, and then the curing agent floating oil layer 9 is injected through the outer tube surface casing 3, so that the addition of the curing agent floating oil layer is completed, as shown in fig. 3, wherein the arrow direction in the figure is the liquid level descending direction;
s35, introducing gas into the salt cavern 1 to discharge the saturated saline water 7, and gradually reducing the liquid level of the curing agent floating oil layer 9 to combine the low-molecular-weight epoxy resin coating and the curing agent to finish curing; after standing for 1 week, curing the low molecular weight epoxy resin on the surface of the salt cavern to form a film, and obtaining a flora breeding coating 10; finally, pumping out all surface liquid in the salt cavern, as shown in figure 4; the gas used for discharging the brine is pure carbon dioxide.
Example 2
A construction method of a salt cavern inner wall flora breeding coating is different from that in the embodiment 1 in that:
s1, loading a coupling agent on the inner wall of a salt cavern: adding a silane coupling agent and hydrazine into salt cavities filled with brine, standing for 48 hours, discharging the brine, and standing for 4 days; introducing gas into the salt cavern filled with the brine, and discharging the brine, wherein the gas is pure hydrogen;
s2, preparing a bacterial colony-containing hydrophobic porous material floating oil layer: in an anaerobic environment, uniformly stirring bisphenol F type epoxy resin, dioctyl ester, polypropylene glycol diglycidyl ether and aramid fiber, and finally adding a colony-containing hydrophobic porous material; the weight parts of bisphenol F type epoxy resin, dioctyl ester, polypropylene glycol diglycidyl ether, aramid fiber and the colony-containing hydrophobic porous material are as follows:
Figure BDA0003777060170000081
in S34, the curing agent oil-floating layer is bis (4-aminocyclohexyl) methane.
Example 3
A construction method of a salt cavern inner wall flora breeding coating is different from that in the embodiment 1 in that:
s1, loading a coupling agent on the inner wall of a salt pit: adding a silane coupling agent and hydrazine into salt cavities filled with brine, standing for 48 hours, discharging the brine, and then standing for 5 days; introducing gas into the salt cavern filled with the brine, and discharging the brine, wherein the gas is pure hydrogen;
s2, preparing a bacterial colony-containing hydrophobic porous material floating oil layer: in an anaerobic environment, uniformly stirring bisphenol F/A copolymer epoxy resin, dimethylbenzene, polymerized fatty acid polyglycidyl ester and carbon fiber, and finally adding a colony-containing hydrophobic porous material; wherein the bisphenol F/A copolymer type epoxy resin, xylene, polymerized fatty acid polyglycidyl ester, carbon fiber and the colony-containing hydrophobic porous material comprise the following components in parts by weight:
Figure BDA0003777060170000082
Figure BDA0003777060170000091
in S34, the curing agent floating oil layer is aromatic amine which is m-xylylenediamine.
Example 4
A construction method of a salt cavern inner wall flora breeding coating is different from that in the embodiment 1 in that:
s1, loading a coupling agent on the inner wall of a salt pit: adding a silane coupling agent and hydrazine into salt cavities filled with brine, standing for 48 hours, discharging the brine, and standing for 3 days; introducing gas into the salt cavern filled with the brine, and discharging the brine, wherein the gas is pure hydrogen;
s2, preparing a bacterial colony-containing hydrophobic porous material floating oil layer: in an anaerobic environment, uniformly stirring bisphenol A epoxy resin, turpentine, epoxidized cardanol and ultra-high molecular weight polyethylene fibers, and finally adding a colony-containing hydrophobic porous material; the weight parts of the bisphenol A type epoxy resin, the turpentine, the epoxidized cardanol, the ultra-high molecular weight polyethylene fiber and the colony-containing hydrophobic porous material are as follows:
Figure BDA0003777060170000092
and the curing agent floating oil layer in the S34 is diaminodiphenylmethane.
Example 5
A construction method of a salt cavern inner wall flora breeding coating is different from that of the embodiment 1 in that:
s1, loading a coupling agent on the inner wall of a salt pit: adding a silane coupling agent and hydrazine into salt cavities filled with brine, standing for 48 hours, discharging the brine, and standing for 4 days; introducing gas into the salt cavern filled with the brine, and discharging the brine, wherein the gas is pure hydrogen;
s2, preparing a bacterial colony-containing hydrophobic porous material floating oil layer: in an anaerobic environment, uniformly stirring bisphenol F/A copolymer epoxy resin, coal tar, polypropylene glycol diglycidyl ether and boron fiber, and finally adding a hydrophobic porous material containing bacterial colonies; the weight parts of bisphenol F/A copolymer epoxy resin, coal tar, polypropylene glycol diglycidyl ether, boron fiber and the hydrophobic porous material containing bacterial colonies are as follows:
Figure BDA0003777060170000101
and the curing agent floating layer in the S34 is diaminodiphenyl sulfone.
According to the construction methods of examples 1 to 5, the prepared salt cavern is stabilized in a methane bacteria hydrogen environment for 480 hours, and then carbon dioxide is introduced to detect the methane output, and the detection results are shown in table 1.
TABLE 1 test results of examples 1 to 5
Methane content in 36 hours% Methane content in 72 hours%
Example 1 26 42
Example 2 25 40
Example 3 27 46
Example 4 23 44
Example 5 20 38
Blank example <1 1
The blank in table 1 refers to the results of salt caverns without coating.
In summary, as can be seen from table 1, the performance of the examples is superior to that of the blank examples, and the flora is isolated from the high-salt environment by the flora breeding coating, so that the flora can survive and breed in a mild environment, and further, carbon dioxide and hydrogen can be stably prepared into methane gas.
While particular embodiments of the present invention have been described in the foregoing specification, various modifications and alterations to the previously described embodiments will become apparent to those skilled in the art from this description without departing from the spirit and scope of the invention.

Claims (8)

1. A construction method of a flora breeding coating on the inner wall of a salt cavern is characterized by comprising the following steps: the method specifically comprises the following steps:
s1, loading a coupling agent on the inner wall of a salt pit: adding a silane coupling agent and hydrazine into salt cavities filled with brine, standing for 48 hours, discharging the brine, and standing for 3-5 days; introducing gas into the salt cavern filled with the salt water, and discharging the salt water;
s2, preparing a bacterial colony-containing hydrophobic porous material floating oil layer: in an anaerobic environment, uniformly stirring low-molecular-weight epoxy resin, an inactive diluent, a plasticizer and a fiber reinforced material, and finally adding a colony-containing hydrophobic porous material;
and S3, coating the middle layer and the top of the inner wall of the salt cavern.
2. The construction method of the flora breeding coating on the inner wall of the salt cavern as claimed in claim 1, wherein the construction method comprises the following steps: the S3 specifically comprises the following steps:
s31, adding a bacterial colony-containing hydrophobic porous material oil-floating layer into saturated saline water to prepare a saline water coating, wherein the bacterial colony-containing hydrophobic porous material floats on the surface of the saturated saline water in an initial state of the oil-floating layer;
s32, injecting the saline coating prepared in the step S31 into the salt cavern, wherein the hydrophobic porous material in the hydrophobic porous material oil-floating layer containing the bacteria colony slowly adheres to the inner surface of the salt cavern along with the low-molecular-weight epoxy resin along with the gradual rise of the liquid level of the saline, and the hydrophobic porous material oil-floating layer containing the bacteria colony floats on the surface of saturated saline;
s33, extracting the mixed floating oil layer: the mixed floating oil layer is pumped out by adopting a water injection external beating method, and the method specifically comprises the following steps: 2 sleeves are arranged in the cavity manufacturing process by a water-soluble method, the inner pipe is used for feeding water and the outer pipe is used for discharging brine, a floating oil layer is required to be discharged, saturated brine is required to be injected into a salt cavity through the inner pipe, the liquid level of the brine is raised, and finally the top of the mixed floating oil layer is discharged out of a salt cave;
s34, adding a curing agent floating oil layer: after the mixed floating oil layer is completely pumped out, part of saturated saline water is pumped out through the inner pipe, and then the curing agent floating oil layer is injected through the outer pipe, so that the addition of the curing agent floating oil layer is completed;
s35, introducing gas into the salt cavity to discharge the brine, and gradually reducing the liquid level of the curing agent floating oil layer to combine the low-molecular-weight epoxy resin coating and the curing agent to finish curing; after standing for 1 week, curing the low molecular weight epoxy resin on the surface of the salt cavern to form a film; finally, pumping out all surface liquid in the salt cavern; the gas used for discharging the brine is pure hydrogen, pure carbon dioxide or a mixture of the two.
3. The construction method of the flora breeding coating on the inner wall of the salt cavern as claimed in claim 1, wherein the construction method comprises the following steps: the gas in the S1 is hydrogen, carbon dioxide or a mixture of the hydrogen and the carbon dioxide.
4. The construction method of the flora breeding coating on the inner wall of the salt cavern as claimed in claim 1, wherein the construction method comprises the following steps: the weight parts of the low-molecular-weight epoxy resin, the non-reactive diluent, the plasticizer, the fiber reinforced material and the hydrophobic porous material containing the bacterial colony in the S2 are as follows:
Figure FDA0003777060160000021
5. the construction method of the flora breeding coating on the inner wall of the salt cavern as claimed in claim 1, wherein the construction method comprises the following steps: the low-molecular-weight epoxy resin in S2 is one or two of bisphenol A epoxy resin, bisphenol F epoxy resin and bisphenol F/A copolymerized epoxy resin, and the low-molecular-weight epoxy resin has a molecular weight not higher than 260 and a density not lower than 1.33g/mL; the non-reactive diluent is one of dimethyl collar benzene dibutyl ester, dioctyl ester, xylene, turpentine and coal tar; the plasticizer is one of epoxidized cardanol, polypropylene glycol diglycidyl ether and polymerized fatty acid polyglycidyl ester; the fibrous reinforcement is chopped fibers.
6. The construction method of the flora reproduction coating on the inner wall of the salt cavern as claimed in claim 5, wherein the construction method comprises the following steps: the fiber reinforced material is one of glass fiber, aramid fiber, carbon fiber, ultra-high molecular weight polyethylene fiber and boron fiber.
7. The construction method of the flora breeding coating on the inner wall of the salt cavern as claimed in claim 2, wherein the construction method comprises the following steps: the curing agent oil-floating layer in the S34 is alicyclic amine or aromatic amine.
8. The construction method of the flora reproduction coating on the inner wall of the salt cavern as claimed in claim 7, wherein the construction method comprises the following steps: the alicyclic amine is bis (4-amino-3-methylcyclohexyl) methylamine or bis (4-aminocyclohexyl) methane; the aromatic amine is m-xylylenediamine, diaminodiphenylmethane or diaminodiphenylsulfone.
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CN1919963A (en) * 2006-08-11 2007-02-28 中国石油天然气股份有限公司 Brine cement slurry adapted for salt hole air reserved storeroom
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CN109210367A (en) * 2018-08-07 2019-01-15 华南理工大学 A kind of pressure-resistant seal material and method for gas storage
CN114107404A (en) * 2020-09-01 2022-03-01 中国科学院青岛生物能源与过程研究所 Integrated separation type microorganism fixed bed in-situ hydrogen alkane conversion method
CN114607938A (en) * 2022-03-03 2022-06-10 中盐金坛盐化有限责任公司 Salt cavern hydrogen storage gas production pipe sealing process

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1919963A (en) * 2006-08-11 2007-02-28 中国石油天然气股份有限公司 Brine cement slurry adapted for salt hole air reserved storeroom
US20100099157A1 (en) * 2006-12-11 2010-04-22 Ralf Salvetzki Process for the biological generation of methane,
CN109210367A (en) * 2018-08-07 2019-01-15 华南理工大学 A kind of pressure-resistant seal material and method for gas storage
CN114107404A (en) * 2020-09-01 2022-03-01 中国科学院青岛生物能源与过程研究所 Integrated separation type microorganism fixed bed in-situ hydrogen alkane conversion method
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