Abstract: A ladder-structural gravity-assisted-heat-pipe geothermal energy recovery system without liquid-accumulation effect, comprises a ladder-structural gravity-assisted heat pipe, a condenser, and a liquid tank. The ladder-structural gravity-assisted heat pipe comprises a return pipe, an outer pipe and an inner pipe. The return pipe is provided in a space between the outer pipe and the inner pipe and communicated with the liquid tank, and the space between the outer pipe and the inner pipe is divided to form a ladder structure. A liquid working medium flows from the liquid tank through the return pipe into each section sequentially, absorbs heat from a high-temperature rock through a wall of the outer pipe, vaporizes into a gaseous working medium, gets into the inner pipe, and rises to the condenser to condense and flows to the liquid tank to circulate. Such design greatly improves the heat transfer efficiency in geothermal energy recovery using ultra-long heat pipes.

Abstract: An apparatus for growing hydrate crystals includes a high-pressure-resistant crystallization vessel, a temperature control system, a pressure control system, a data collection system, and a mobile shelf. The apparatus can realize a variety of experimental methods such as the bubble method, the droplet method and the solution growth method by changing the experimental fitting in the high-pressure-resistant crystallization vessel, and thereby-improve the versatility of the device.

Abstract: A vinylamide block copolymer kinetic hydrate inhibitor and a preparation method thereof are disclosed. The vinylamide block copolymer kinetic hydrate inhibitor has a structural formula as shown in formula I. Through reverse atom transfer radical polymerization, under an anaerobic operating condition, with vinylcaprolactam and acrylamide as monomers, dimethylformamide as a solvent, azobisisobutyronitrile as an initiator, and a transition metal complex composed of a catalyst anhydrous copper chloride and a ligand 2,2?-bipyridine as a catalytic system, the method has achieved to catalyze a controllable free radical solution polymerization to obtain a poly(vinylcaprolactam-acrylamide) block copolymer kinetic hydrate inhibitor. The synthesized kinetic hydrate inhibitor has a controllable molecular weight, a narrow molecular weight distribution, and a controllable synthesis process, and exhibits an excellent inhibitory effect.

Abstract: A multi-functionally modified polymer binder for lithium ion batteries, which is prepared by a free radical graft copolymerization or a Michael addition reaction, with a biomass polymer or a synthetic polymer as a substrate, and a hydrophilic monomer and a lipophilic monomer as functionally modifying monomers. The binder presents a three-dimensional network body with a multi-branch structure, provides more active cites for contacting with the electrode active materials, improves uniformity and flatness in the formation of films from electrode slurry, enhances the binding strength between the electrode active materials, the conductive agents and the current collector, has high elasticity and binding strength, and is applicable in water/organic solvent. Use of the binder in positive electrodes and negative electrodes can facilitate the conduction of electrons/ions during charging and discharging, reduce the electrochemical interface impedance of the electrodes.

Abstract: A hydrate formation promoter and the use thereof in methane storage. The hydrate formation promoter is a mixed aqueous solution including cyclopentane, sodium dodecyl sulfate and water, wherein a volume fraction of the cyclopentane is 5% to 23.4% and a mass fraction of the sodium dodecyl sulfate is 0.01% to 0.08%. The hydrate formation promoter can realize effective and rapid formation of methane hydrate at approximate room temperature (25° C.), and can remain stable at higher temperatures.

Abstract: An apparatus for growing hydrate crystals includes a high-pressure-resistant crystallization vessel, a temperature control system, a pressure control system, a data collection system, and a mobile shelf. The apparatus can realize a variety of experimental methods such as the bubble method, the droplet method and the solution growth method by changing the experimental fitting in the high-pressure-resistant crystallization vessel, and thereby-improve the versatility of the device.

Abstract: A real-time monitoring apparatus for seafloor deformation during hydrate exploitation, includes a main frame, a detecting device, and a sensing and wireless data transmitting device. The detecting device includes at least two detecting straight rods in different directions; the detecting straight rods are connected to the main frame through the movable sleeves; and at least two fixing supports are configured below each detecting straight rod, perpendicular to and uniformly distributed along the detecting straight rod. A movable lever is configured above each detecting straight rod, the movable lever is connected to the main frame through the lever-fixing rod, and a stretchable and compressible spring is configured at an upper end of the movable lever. The sensing and wireless data transmitting device includes at least two tension and compression force sensors in different directions, a gyroscope sensor, a wireless data transmitter, and a power source, all mounted in the main frame.

Abstract: A vinylamide block copolymer kinetic hydrate inhibitor and a preparation method thereof are disclosed. The vinylamide block copolymer kinetic hydrate inhibitor has a structural formula as shown in formula I. Through reverse atom transfer radical polymerization, under an anaerobic operating condition, with vinylcaprolactam and acrylamide as monomers, dimethylformamide as a solvent, azobisisobutyronitrile as an initiator, and a transition metal complex composed of a catalyst anhydrous copper chloride and a ligand 2,2?-bipyridine as a catalytic system, the method has achieved to catalyze a controllable free radical solution polymerization to obtain a poly(vinylcaprolactam-acrylamide) block copolymer kinetic hydrate inhibitor. The synthesized kinetic hydrate inhibitor has a controllable molecular weight, a narrow molecular weight distribution, and a controllable synthesis process, and exhibits an excellent inhibitory effect.

Abstract: A method for recovering gas in natural gas hydrate exploitation is disclosed, in which a gas-water mixture at a bottom of a exploitation well is delivered to an ocean surface platform through a marine riser, by adopting the gas-lift effect of methane gas derived from the dissociation of natural gas hydrate, so as to achieve a controllable flowing production of marine natural gas hydrate. In the startup stage, the pressure in the bottom of the well is decreased by the gas-lift effect of the injected gas to allow dissociation of the hydrate. In the flowing production stage, the flowing production is achieved by the gas-lift effect of the gas derived from the dissociation of the natural gas hydrate, wherein a seafloor gas tank is employed to control the flowing rate and replenish the consumed gas.

Abstract: The present invention provides a CuInS2/In2S3/ZnS fluorescent quantum dot with a double-layer core-shell structure, aiming to overcome the defects of the existing CuInS2 quantum dots. CuInS2 serves as a core, In2S3 serves as a first shell for cladding the core, and ZnS serves as a second shell for cladding the first shell. The present invention further provides a preparation method for the CuInS2/In2S3/ZnS fluorescent quantum dot with a double-layer core-shell structure. The CuInS2 quantum dot is synthesized using two stabilizers, and indium thiophosphate serves as a monomolecular precursor of the In2S3 shell.

Abstract: A preparation method of a crosslinking-type aqueous binder for lithium-ion batteries. An organic carboxylic group-, amino group- or hydroxyl group-containing hydrophilic polymer, and a hydroxyl group-, amine group- or carboxyl group-containing water-soluble small-molecule crosslinker, both serve as starting materials of the aqueous binder, and can be crosslinked by esterification or amidation under coating and drying conditions of lithium-ion battery electrode slurry. The preparation method of the crosslinking-type aqueous binder is simple, without the need of modifying the current process or conditions for lithium-ion battery manufacture. The obtained electrodes have excellent binding capacity, flexibility, and elasticity.

Abstract: A constant tension anchoring system mounted on a floating body in the ocean includes an anchor, an anchor chain, an anchor windlass, a towing cable, a load and a chain stopper. During the oscillatory motion of the waves, the constant tension anchoring system repeats the release and retraction so as to maintain a generally constant tension force and thereby ensure the safety of the anchoring system and the floating body.

Abstract: A dry-wet combined sorting system for municipal solid waste comprising a dry type smashing and winnowing device and a wet type water sorting device. The system is compact in structure; smashing knives with different revolving speeds and the same revolving direction are provided, thereby enabling continuous processing of the system which is high in processing efficiency and simple in operation; meanwhile, multiple protection devices are provided, so that the whole system is safe and reliable; perishable organic matters, light combustible matters and inorganic matters can be separated completely; the light combustible matters are picked out by the dry type smashing and winnowing device, which ensures their low water content and facilitates their subsequent energy-oriented utilization. Therefore, the municipal solid waste is into valuable thing for it can be utilized sufficiently as a resource, and the system has very high environmental benefits and social benefits.

Abstract: Disclosed is an experimental device for studying the sediment yield behavior and the radial deformation of porous media during the exploitation of natural gas hydrates, comprising a high-pressure reactor, a hydrate sample chamber, a simulated wellbore, a deformation measurement unit, an ambient temperature control unit, an outlet control unit, an inlet control unit and a data processing unit. Further disclosed is a method using the above-mentioned experimental device to carry out experiments.

Abstract: A multi-functionally modified polymer binder for lithium ion batteries, which is prepared by a free radical graft copolymerization or a Michael addition reaction, with a biomass polymer or a synthetic polymer as a substrate, and a hydrophilic monomer and a lipophilic monomer as functionally modifying monomers. The binder presents a three-dimensional network body with a multi-branch structure, provides more active cites for contacting with the electrode active materials, improves uniformity and flatness in the formation of films from electrode slurry, enhances the binding strength between the electrode active materials, the conductive agents and the current collector, has high elasticity and binding strength, and is applicable in water/organic solvent.

Abstract: An experimental device of polyphase separation of natural gas hydrate drilling fluid, and method of use thereof, comprising a solid-phase separator, a liquid injection module, a gas injection module and a gas-liquid separator. The solid-phase separator comprises a first filter device and a second filter device, the gas injection module injects gas into the solid-phase separator while the liquid injection module injects liquid into the solid-phase separator, and the gas-liquid separator is communicated with the solid-phase separator through a pressure control valve.

Abstract: The invention discloses a system for squeezing, smashing and winnowing municipal solid waste (MSW). The system comprises a primary squeezing and smashing, device and a secondary smashing and winnowing device. The system of the invention has good effect m squeezing, smashing and winnowing, can greatly reduce the water content of MSW and efficiently separate the MSW into combustible matters and non-combustible matters, so as to facilitate further subsequent utilization of the municipal waste; moreover, an upper jaw of a jaw crusher is connected with a spring device, so that the squeezing pressure, smashing effect and processing capacity of the jaw crusher can be adjusted according to the amount of the MSW. In addition, the system of the invention is further provided with emergency brake switches, spring protection devices and a sieve, so as to ensure the stability and the reliability of the system.

Abstract: A gas-liquid separation apparatus suitable for gas hydrate slurry, comprising an upper chamber, a middle chamber, and a lower chamber; a gas-phase outlet and a pressurizing unit are disposed in a top of the upper chamber, the middle chamber is provided with a material inlet and a wire mesh demister, and the lower chamber is provided with a liquid-phase outlet and a plurality of deflector baffles. The arrangement of divided chambers can reduce the degree of hydrate dissociation in the slurry (i.e., loss of the sought gas) and improve the separation efficiency. With the pressurizing unit, it facilitates the setting of the required pressure for gas-liquid separation without introducing a pressure maintaining valve in the subsequent separation process, prevents the hydrate in the slurry from dissociating in the apparatus, and allows rapid separation between the slurry and the gas.

Abstract: An apparatus and a combined process for carbon dioxide gas separation, combining the hydrate-based process with the chemical absorption process, which reduces secondary pollution and allows the efficient continuous separation of carbon dioxide gas without increasing the pressure and thereby the operating cost is reduced significantly. The apparatus and combined process can be applied in the separation of carbon dioxide in IGCC synthetic gas, natural gas and biogas, and address the issues of the existing processes such as high energy consumption, low throughput, and secondary pollution.

Abstract: The present invention provides a CuInS2/In2S3/ZnS fluorescent quantum dot with a double-layer core-shell structure, aiming to overcome the defects of the existing CuInS2 quantum dots. CuInS2 serves as a core, In2S3 serves as a first shell for cladding the core, and ZnS serves as a second shell for cladding the first shell. The present invention further provides a preparation method for the CuInS2/In2S3/ZnS fluorescent quantum dot with a double-layer core-shell structure. The CuInS2 quantum dot is synthesized using two stabilizers, and indium thiophosphate serves as a monomolecular precursor of the In2S3 shell.