27 results about "Underground storage" patented technology

The invention discloses a solid potassic salt mine underground screening and crushing integrated ore storage bin system, and belongs to the technical field of solid potassic salt mine mining. The system is composed of a roadway type raw ore bin, a feeding chamber and a vertically-arranged screening and crushing chamber. The raw ore bin is communicated with the main transportation roadway and is internally provided with a bulldozer; the feeding chamber is provided with a surge bin and a screw feeder; a linear vibrating screen and a double-geared-roller crusher are arranged in the screening and crushing chamber. The core of the method is that oversize coarse grain materials are returned to a surge bin through an oversize transfer belt conveyor to form closed-loop crushing circulation, and it is ensured that the ore removal granularity is smaller than or equal to 20 mm. The problem that sylvite ore is prone to deliquescence and hardening is fundamentally solved through the roadway type ore storage bin, underground storage, screening and crushing integrated operation is achieved, the ore directly enters an ore dressing, decomposing and crystallizing workshop after being lifted to the ground, the ground ore dressing links are reduced, occupied ground sites are reduced, the working efficiency and the system reliability are improved, and the production cost is reduced. The method is especially suitable for efficient mining of deliquescent solid potassic salt ore.

The application relates to the technical field of ecological environment engineering, and discloses a modular rain flood resource deep purification and underground storage integrated device, which comprises a radial shear purification module, a hydraulic closed locking assembly and a spiral push flow storage module which are coaxially and communicatively arranged from top to bottom; the radial shear purification module comprises a first shell, a composite filter material layer filled in the first shell, an inverted funnel-shaped flow guide cover arranged above the composite filter material layer and a central siphon assembly, a horizontal annular flow channel is formed between the lower edge of the inverted funnel-shaped flow guide cover and the upper surface of the composite filter material layer; the spiral push flow storage module comprises a second shell and a spiral flow guide plate arranged in the second shell. Through cooperation of the inverted funnel-shaped flow guide cover and the central siphon assembly, vertical gravity flow during cleaning is converted into horizontal radial converging flow along the filter material surface, the integrity of a biofilm structure is maintained, and long-term stable operation of the filter layer can be realized without external power.

An underground storage system (1) for fluid storage. The device comprises a cavity (2) formed in a land (3), the cavity (2) having a bottom (6); a holding element (4) comprising at least one opening; at least one tank (5) having a longitudinal axis, a lower end (13) closed by a first closure device (12) and an upper end (14) closed by a second closure device (15); and means for access from the outside of the cavity (2), comprising at least one of the following: means for access to each tank (5), means for access to the inside of the tank (5), and means for access to the contents of the cavity (2).

This invention belongs to the field of carbon resource utilization and carbon dioxide emission reduction, and discloses a method for underground storage, conversion and reuse of carbon resources. Taking solid carbon resources as an example, the method includes the following steps: (1) converting solid carbon resources into carbon-containing liquids; (2) detecting the polymerization characteristics and / or reaction characteristics; if the detection results do not meet the preset requirements, the carbon-containing liquids are modulated; (3) injecting the carbon-containing liquids into underground storage points located at a depth of ≥800 meters, so that the carbon-containing liquids solidify or react at the underground storage points. This invention improves the overall process design of the storage and conversion method, modulates the polymerization characteristics and / or reaction characteristics of the carbon-containing liquids using modulation, and then injects the carbon-containing liquids into underground storage points, so that the carbon-containing liquids solidify or react under the pressure conditions at the underground storage points, thereby achieving storage and conversion. This invention injects carbon resources into deep underground layers, resulting in long-term storage.

The invention belongs to the technical field of micro-discharge ore storage, and relates to an anti-seepage and shielding structure for a micro-discharge ore underground storage cavern and a construction method, and the anti-seepage and shielding structure comprises a primary support concrete layer, an iron ore powder-containing secondary lining concrete layer, a first feldspar powder coating, a second feldspar powder coating and a water film layer. The secondary lining concrete layer containing the iron ore powder is used for shielding gamma rays, and the water film layer between the first feldspar powder coating and the secondary lining concrete layer is used for shielding neutron rays. A first impermeable layer is formed on the surface of the primary support concrete layer through the first feldspar powder coating, a second impermeable layer is formed on the surface of the secondary lining concrete layer through the second feldspar powder coating, and micro-emission nuclide migration is prevented while impermeability is achieved through cooperation of the first impermeable layer, the second impermeable layer and the secondary lining concrete. The long-term stability of the underground storage cavern is achieved, and meanwhile isolation between the underground storage cavern and the underground ecosphere is guaranteed.

A petroleum coke carbon capture and sequestration method is provided which includes processing the petroleum coke into a petroleum coke particulate, treating the petroleum coke particulate to recover components such as Vanadium, preparing a slurry including the petroleum coke particulate, and injecting the slurry into an underground area. The underground area could be a live crude oil extraction well, where it could displace crude oil, an underground storage facility, a salt formation, or the like.

This invention belongs to the field of carbon emission reduction and hazardous waste treatment, and discloses a method for co-processing carbon and solid waste from bio-oil and hazardous waste. Taking solid hazardous waste as an example, the method includes the following steps: (1) crushing the solid hazardous waste; (2) determining the formulation scheme of the bio-oil-hazardous waste mixture; (3) mixing the bio-oil and solid particles according to the formulation scheme to obtain a bio-oil-hazardous waste mixed slurry; (4) injecting the bio-oil-hazardous waste mixed slurry into an underground storage point at a target depth, so that the bio-oil-hazardous waste mixed slurry polymerizes and solidifies at the underground storage point, thereby achieving carbon and solid waste sequestration. The method of this invention utilizes the fluid transport effect and polymerization characteristics of bio-oil to carry hazardous waste into the deep underground for polymerization and solidification, thereby achieving long-term stable sequestration of hazardous waste. At the same time, it permanently sequesters the carbon contained in the bio-oil itself underground, preventing it from being converted into carbon dioxide and emitted into the atmosphere, thus achieving co-processing carbon and solid waste sequestration.

This underground storage system (1) for the storage of fluids comprises a recess (2) made in a ground (3), said recess (2) having a bottom (7), a support element (5) comprising at least one opening, an assembly element (19) inserted in the opening of the support element (5), a ventilation device (4) comprising at least one ventilation cavity and at least one tank (6), said tank (6) having a longitudinal axis, a lower end (14) closed by a first closing means (15), and an upper end (16) closed by a second closing means (17), said upper end (16) being assembled to the support element (5) so that the tank (6) is suspended inside the recess (2) and an axial clearance (G) suitable for absorbing thermal expansion of said tank (6) remains between the first closing means (15) and the bottom (7). Figure for the abridged version: Fig 1

This invention relates to the field of underground reservoir site selection technology, specifically to a method for selecting underground compressed hydrogen energy storage sites. The method includes: collecting multi-source borehole data from various candidate sites and extracting microscopic lithological characteristics, macroscopic stratigraphic characteristics, and parameter correlation characteristics; constructing a geological framework model based on the macroscopic stratigraphic characteristics, using data reflecting microscopic lithological characteristics and parameter correlation characteristics as soft data to generate several heterogeneous stochastic geological models; selecting several of these models as representative models and performing multi-physics coupled numerical simulations to obtain a series of performance index sets; quantifying the uncertainty of each performance index set and using a multi-objective optimization ranking method to comprehensively score and rank each candidate site; this method enables full utilization of multi-source borehole data, considers geological uncertainties, allows for high-fidelity stochastic geological modeling and simulation, and enables quantitative assessment of the performance and risk of multiple candidate sites.

A process for recovery of hydrogen from underground storage is provided. The process involves sending a hydrogen stream stored in an underground cavern to a pressure swing adsorption unit and then to an electrochemical compression unit to produce hydrogen having a purity of above 99.5 mol% to close to 100 mol%.

An underground storage system for storing fluid includes a hole having a bottom, a support element including at least one opening able to receive a joining element, at least one reservoir having a longitudinal axis, a bottom end and a top end, a first closure able to close the reservoir at its bottom end, and a second closure able to close the reservoir at its top end. The top end is able to be joined to the support element via the joining element such that the reservoir is hung inside the hole and such that an axial clearance able to absorb axial thermal expansion of the reservoir remains between the first closure and the bottom.

The utility model discloses a regulating reservoir using a construction adit as an underground cave depot capacity expansion. The regulating reservoir comprises a regulating reservoir body, the construction adit, a water delivery tunnel, a surge shaft, a flow control facility and a plugging body. The regulating reservoir is positioned at the downstream of the flow control facility and plays a role in regulating a downstream water delivery pipeline communicated to a water plant; one end of the construction adit is connected with the regulating reservoir, and the other end of the construction adit is connected with a tunnel section of the water delivery tunnel at the upstream of the surge shaft; the water conveying tunnel is a main flow passing channel, and the surge shaft is located on the upstream of the tail end of the water conveying tunnel and arranged close to a flow control facility as much as possible. The flow control facility is located at an outlet of the water delivery tunnel, the upstream is connected with the water delivery tunnel through a branch pipe, the downstream is connected with the regulating reservoir, the flow control facility comprises a flow regulating valve and a power station, and the flow regulating valve and the power station are arranged in parallel; the plugging body is arranged at the intersection of the construction adit and the water delivery tunnel and used for sealing the inner end of the construction adit. The utility model has the advantages that the construction land is saved, and the building materials are saved.

The invention relates to the technical field of underground reservoir site selection, in particular to a compressed hydrogen energy storage underground reservoir site selection method, which comprises the following steps: collecting multi-source drilling data of each candidate reservoir site, and extracting microscopic lithologic characteristics, macroscopic stratum characteristics and parameter correlation characteristics; constructing a geological architecture model according to the macroscopic stratum characteristics, and generating a plurality of heterogeneous random geological models by taking data reflecting the microcosmic lithologic characteristics and the parameter correlation characteristics as soft data; selecting a plurality of models as representative models, and performing multi-physics field coupling numerical simulation to obtain a series of performance index sets; performing uncertainty quantification processing on each performance index set, and performing comprehensive score sorting on each candidate library address by adopting a multi-objective optimization sorting method; according to the method, multi-source drilling data can be fully utilized, geological uncertainty is considered, high-fidelity random geological modeling and simulation can be carried out, and quantitative evaluation can be carried out on the performance and the risk of a plurality of candidate library addresses.

We provide CO2 reduction systems and other technologies that can reduce CO2 emissions significantly. [Solution] The CO2 reduction system 1 comprises a generator 10 that crushes plants 100 that have absorbed CO2 emitted into the atmosphere to produce chips 101, and an underground storage unit 20 installed underground to store the chips 101 produced by the generator 10.

The application discloses a storage energy power generation system capable of realizing carbon dioxide underground storage and an operation method thereof. The storage energy power generation system capable of realizing carbon dioxide underground storage comprises a high-pressure carbon dioxide storage underground storage and a normal-pressure and normal-temperature carbon dioxide storage gas storage. In the storage energy state, carbon dioxide is stored in the underground storage. In the energy release state, the underground storage releases part of the carbon dioxide and stores the carbon dioxide in the gas storage. The underground storage serves as the carbon dioxide storage and the high-pressure storage tank for storing energy of compressed carbon dioxide, and thus saves the construction cost. When the storage energy system is decommissioned, the underground storage can continue to store carbon dioxide for a long time. The heat storage assembly of the application recycles the compression heat generated in the compression process of carbon dioxide and uses the compression heat for the expansion process of carbon dioxide, so that the energy recycling is realized and the system energy consumption is reduced.

A process for recovery of hydrogen from underground storage is provided. The process involves sending a hydrogen stream stored in an underground cavern to a pressure swing adsorption unit and then to an electrochemical compression unit to produce hydrogen having a purity of above 99.5 mol % to close to 100 mol %.

A method to evacuate a fluid mixture from an underground storage location with the use or regulation control of cross-compression technique. The method allows to evacuate and recover a fluid mixture from an underground storage location. The fluid mixture typically contains a hydrocarbon fluid phase and a brine phase. The method includes separating the fluid mixture in the hydrocarbon fluid phase and the brine phase, inside the separation vessel, and then alternatively pumping each phase of the fluid mixture contained inside the separation vessel towards dedicated containment volumes, using a single pump or multiple pumps, whereby a first containment volume is dedicated to the hydrocarbon fluid phase and a second containment volume is dedicated to the brine phase. The proposed method allows recovering a higher proportion of the fluid mixture, as recycled product, and therefore limiting the combustion or release of hydrocarbon towards the atmosphere.

The present invention consists of a comprehensive technical process for the cleaning, internal repair, and verification of the mechanical integrity of storage tanks, applicable to both aboveground and underground tanks used in gas stations, service stations, and industrial facilities. The process integrates, in an orderly and sequential manner, specialized technical stages that include tank preparation, internal cleaning, visual inspection, ultrasonic inspection, internal mechanical repair, and subsequent verification of mechanical integrity, allowing for an objective evaluation of the tank's structural condition before its return to operation.Unlike traditional methods, this invention combines the precise detection of structural damage with internal corrective actions and subsequent technical validation into a single continuous process. This reduces operational, environmental, and safety risks, and ensures that the tank meets pre-established technical acceptance parameters. The invention results in a reproducible, verifiable, and industrially applicable method for determining the safe operational fitness of storage tanks, extending their service life, and minimizing mechanical failures associated with corrosion or material thickness loss.

The application provides an injection and production oil simulation test system for water-sealed rock cave underground storage simulation test, which comprises a tunnel excavation unit, a water injection unit, a grouting unit and an injection and production oil unit; the tunnel excavation unit comprises an oil storage cave excavation device and a water curtain tunnel excavation device; the water injection unit comprises a water curtain tunnel simulation water injection device and a natural underground water level simulation water adding device; the water curtain tunnel simulation water injection device and the natural underground water level simulation water adding device inject water at the same time; the grouting unit is used for grouting reinforcement of the broken zone of the oil storage cave; and the injection and production oil unit is used for sucking or discharging the oil storage in the oil storage cave. One technical effect of the application is that the design is reasonable, the underground storage injection and production oil operation state such as the storage cave excavation, the natural underground water level simulation, the surrounding rock fracture grouting, the injection and production oil storage water sealing and the like can be physically simulated according to the actual working conditions, and a systematic underground storage injection and production oil simulation test system is formed.

An underground storage system (1) for storing a fluid, comprising a hole (2) having a bottom (3), a support element (4) including at least one opening (7) capable of receiving a connecting element (18), at least one reservoir (10) having a longitudinal axis (1), a bottom end (14) and a top end (12), a first closure means (16) capable of closing the reservoir (10) at its bottom end (14), and a second closure means (17) capable of closing the reservoir (10) at its top end (12), said top end (12) being connectable to the support element (4) via the connecting element (18), said reservoir (10) being suspended within the hole (2) such that an axial clearance (G) remains between the first closure means (16) and the bottom (3) capable of accommodating axial thermal expansion of said reservoir (10).

The utility model discloses an outdoor throwing opening underground connecting device with a storage function. The outdoor throwing opening underground connecting device is characterized in that a pre-buried pipeline is communicated with a transmission pipeline below the pre-buried pipeline; a garbage storage assembly is installed in the pre-buried pipeline, the garbage storage assembly is provided with an underground storage section, an upper end opening of the underground storage section is a throwing pipe opening, a lower end opening of the underground storage section is opposite to and communicated with the conveying pipeline, a front panel is fixedly installed at the upper end opening of the underground storage section, and a plurality of lifting points are arranged on the front panel; a support is installed on one side of the garbage storage assembly and provided with a valve assembly, the valve assembly is provided with a driving device, the driving device drives the connecting rod mechanism to move, and the connecting rod mechanism drives a valve to rotate to be opened and closed at the lower end opening of the underground storage section. The garbage storage assembly and the valve assembly can be directly lifted out conveniently during maintenance, the labor and time cost during maintenance is reduced, and the maintenance efficiency is improved; garbage can be placed according to the preset sequence of the main control program, meanwhile, garbage odor leakage is prevented, and noise generated when garbage is transported in the conveying pipeline is reduced.

The application discloses an experimental device based on an underground water storage and drainage space of a pit bottom of an open coal mine, and belongs to the technical field of open mine mining hydrogeological engineering and indoor simulation. The device comprises a sand box main body, an underground water simulation system, a rainfall simulation system, an underground water storage and drainage space simulation structure and a monitoring and drainage control system. The first and second high water head water tanks and the first and second low water head water tanks are used for simulating and controlling underground water flow, and an adjustable shower is used for simulating rainfall. The simulation structure is internally provided with a concrete anti-seepage wall, wherein a filter layer and a water storage medium are filled from bottom to top, a water diversion channel is arranged at the bottom, and a water pumping filter pipe penetrating through the anti-seepage wall and extending into the water storage medium is arranged at the upper portion. The application can accurately simulate complex working conditions coupled by multiple factors, realize synchronous monitoring of multiple parameters such as seepage and water level, provide reliable experimental basis for medium selection, structure optimization and drainage scheme making of the underground water storage and drainage space, and effectively guide engineering practice.

The invention provides a carbon dioxide oil displacement and underground storage cooperative control method and system, and belongs to the technical field of carbon dioxide oil displacement and underground storage. The method comprises the steps that oil reservoir basic data and initial state data of an oil reservoir geologic model are collected and subjected to standardization processing, and oil reservoir data are obtained; designing a self-adaptive well pattern layout, and constructing a multi-field coupling early warning system; a bidirectional linkage mechanism of injection-production optimization driving early warning adjustment and risk early warning driving well pattern regulation and control is combined; constructing a continuous sealing barrier for the target oil reservoir area by utilizing a directional isolation technology; a multi-field coupling early warning system is used for monitoring the long-acting sealing barrier, and a preset sealing guarantee system is formed. According to the method, re-drilling in the sealing stage is not needed, the sealing stability of the sealing area is improved, the risk disposal response time is shortened, the accurate positioning of the risk point is realized, the oil displacement efficiency attenuation rate is reduced, the recovery efficiency is improved, the sealing risk pre-judgment accuracy is improved, and the resource utilization rate is improved.

The present invention provides a system for underground storage of carbon dioxide and an operation method thereof. The system comprises: an injection well for alternately injecting a pH adjustment solution and carbon dioxide to induce a carbonate mineralization reaction in a stratum; a production well for recovering a residual fluid that remains after the carbonate mineralization reaction in the stratum; a production fluid treatment device for separating at least one among carbonate particles, dissolved carbonate ions, and dissolved bicarbonate ions from the fluid recovered from the production well; and a control device for controlling operations of the injection well, the production well, and the production fluid treatment device.

The invention relates to the technical field of clean energy underground reservoirs, in particular to an underground reservoir sealing maintenance system and a detection and maintenance method, and aims to solve the technical problems that in the prior art, the position of a leakage point cannot be determined, and remedial measures are lacked when a test is unqualified. The underground storage cavern sealing maintenance system comprises a basic sealing suite, a graded sealing test suite and a sealing repair suite. According to the underground storage cavern sealing overhauling system, the sealing performance of a storage cavern shaft structure is enhanced through the basic sealing suite, then step-by-step sealing detection is sequentially conducted on the interior of a shaft, an open hole well section and a cavity through the grading sealing testing suite, the position of a leakage point is determined when detection is unqualified, and finally abnormal leakage is repaired through the sealing repairing suite. And sealing measures corresponding to different leakage points are adopted to meet the requirement for the sealing performance in the construction process of the underground storage cavern. The technical problems that according to an existing shaft sealing testing method, the position of a leakage point cannot be determined, and remedial measures are lacked when testing is not qualified are solved.