14 results about "Capillary condensation" patented technology

The utility model discloses a refrigeration structure with an anti-deformation pipeline and an ice cream machine using the refrigeration structure. The refrigeration structure comprises a freezing cylinder, a compressor, a heat exchanger, a refrigeration circulating pipeline and a heat exchange circulating pipeline, the compressor is provided with a condensation outlet, a condensation inlet, a heat exchange inlet and a heat exchange outlet; the refrigeration circulation pipeline comprises a capillary tube, a condensation tube and an air return tube which are sequentially communicated; the heat exchange circulation pipeline comprises a cold source input pipe and an exhaust pipe. According to the refrigeration structure, an air return pipe is arranged in a refrigeration circulation pipeline, an exhaust pipe is arranged in a heat exchange circulation pipeline, and a plurality of sections of bent structures are arranged in the air return pipe and the exhaust pipe respectively, so that anti-bending structures are formed. Due to the fact that the air return pipe and the exhaust pipe are of a bent structure, the air return pipe and the exhaust pipe can bear drawing force and deform to a certain degree when vibration occurs in the transportation process or collision and falling occur in the carrying process, and therefore the air return pipe and the exhaust pipe can bear influences caused by vibration, and the problem that the air return pipe and the exhaust pipe are damaged is solved.

The application discloses a kind of anti-condensation regulation and control methods, device, medium and equipment of ring net cabinet, belong to regulation and control field.The present application obtains the multi-parameter sensing data inside and outside ring net cabinet;Data is input into the condensation risk assessment model constructed based on kelvin capillary condensation theory and solid surface multilayer adsorption theory, and the condensation risk coefficient is obtained by coupling calculation of condensation risk parameter in the model, and four levels of no risk, low risk, medium risk and high risk are output;According to the risk level output, the corresponding preset control strategy is called to execute the regulation and control operation on ring net cabinet.The present application effectively solves the problem that the prior art cannot accurately and efficiently realize anti-condensation regulation and control.

This invention provides a denitrification catalyst suitable for alkali furnaces, its preparation method, and its application, comprising the following raw materials: TiO2 support, pore modifier, vanadium precursor, tungsten precursor, Ce-modified component, and La-modified component; based on the mass of the TiO2 support, the mass percentages of the pore modifier are 3-7%, the vanadium precursor is 1-3%, the tungsten precursor is 1-7%, the Ce-modified component is 1-5%, and the La-modified component is 0.5-1.5%; the pore modifier is methyltrichlorosilane. This invention uses a V-W-Ti system as its base. By modifying the pore structure of the TiO2 support, capillary condensation is eliminated, and hydrophobicity is achieved; Ce modification of the V-W-Ti system enhances the selective adsorption of oxygen vacancies and NH3; and La modification of the V-W-Ti system enhances the acidity of the catalyst and provides alkali metal sacrificial sites. These three components synergistically address the problems of water poisoning, alkali poisoning, and insufficient activity at low temperatures.

The utility model relates to the technical field of batteries, and discloses a battery system which comprises a box body, a two-way anti-explosion valve and a capillary condensation structure, the two-way anti-explosion valve is arranged on the box body, and the two-way anti-explosion valve is provided with an air inlet and an air outlet; the capillary condensation structure is at least communicated with the air inlet; the battery system has an air inlet state and an air exhaust state, and in the air inlet state, the capillary condensation structure communicates with the interior of the box body through the air inlet so as to supply air to the interior of the box body; and in the exhaust state, the interior of the box body is exhausted through the exhaust port. The capillary condensation structure is arranged, vapor condensation and separation of gas are achieved through the capillary condensation technology of the capillary condensation structure, then the gas enters the box body, the gas entering the box body through the two-way anti-explosion valve is dry gas, and it is ensured that the pressure difference between the interior and the exterior of the box body is balanced; and meanwhile, the problem that the box body shell sinks inwards is solved.

The present invention discloses a method for determining the condensation ratio of pore structures, which is a key parameter of capillary condensation amount, including: preparing a clay mineral particle sample and performing secondary electron imaging to obtain a secondary electron grayscale image; extracting pores based on the secondary electron grayscale image; performing polygon fitting on different pores in the extracted pore map and counting the angles corresponding to the endpoints of each fitted polygon; establishing an oil-water-rock model and performing molecular dynamics simulations; obtaining a density distribution map according to the results of the molecular dynamics simulations; calculating the contact angle based on the density distribution map; fitting the capillary condensation liquid surface of a single angle of the pore polygon based on the contact angle and the angles corresponding to the endpoints of each fitted polygon; and determining the condensation ratio corresponding to different partial pressures based on the capillary condensation liquid surface of a single angle of the pore polygon. Starting from the mechanism, the present invention determines the condensation ratio coefficient of the pore structure, thereby determining the adsorption amount of shale oil, and the fitting result is more accurate, and it saves more material and financial resources.

The utility model discloses a condensation recovery device for polymerization reaction, relates to the technical field of polymerization reaction, and provides the following scheme aiming at the problems of low recovery efficiency, incapability of supplementing water to the interior of a reaction kettle in time and low practicability caused by the fact that water drops are attached to the inner wall of a guide pipe and drop into the reaction kettle along the inner wall of the guide pipe in the background technology. Comprising a cooling box arranged on one side of a polymerization reaction kettle, a box cover is connected to the outer wall of the top of the cooling box through bolts, and a condensation mechanism is arranged on one side of the polymerization reaction kettle; the condensation mechanism comprises an input pipe, a distribution cylinder fixedly arranged on the outer wall of the bottom end of the input pipe, a plurality of capillary condensation pipes fixedly arranged on the inner wall of the bottom of the distribution cylinder and a guide cylinder. According to the utility model, water vapor in the polymerization reaction kettle can be fully recovered, condensate water can be prevented from flowing back into the reaction kettle, the condensation efficiency is improved, warm water can be conveyed into the reaction kettle in time, water shortage in the reaction kettle is prevented, and the practicability is improved.

The invention relates to the technical field of inorganic non-metallic materials, and discloses a preparation method and application of high-strength low-temperature sintered porous ceramic, and the method comprises the following steps: introducing a mineralized precursor into a porous skeleton through gas-phase transportation, and localizing and enriching the mineralized precursor at a particle contact neck by capillary condensation; the surface tension of a liquid bridge is increased through slight cooling or pressure reduction, and self-adaptive pre-tightening is applied to the framework; and the precursor is induced to generate low-temperature in-situ mineralization under the condition of keeping the stress state, and the liquid bridge contractility is converted into residual compressive stress in the connecting neck. Chemical bonding strengthening among particles can be achieved at the temperature of 500-800 DEG C, high-temperature sintering densification is not needed, the contradiction between porous ceramic strength and porosity is effectively solved, and the method has the advantages of being low in energy consumption, free of pore channel blockage, controllable in structure and the like and is suitable for preparing high-performance filters and catalyst carriers.

The invention relates to an efficient biomass surface treatment process which comprises the following steps: firstly, carrying out pore filling on a fine structure of biomass through an adsorption effect, and occupying the inner surface of the biomass by utilizing capillary condensation of adsorbate; then, a small amount of adsorbate is desorbed, the outer surface of the biomass is exposed, and chemical modification of the biomass is completed through a gas-phase reaction. According to the process, an excellent surface treatment effect can be achieved by using a very small amount of modifier, so that the modifier which is relatively expensive and has a good modification effect can be selected to carry out surface modification treatment on the biomass; in the process, only a small amount of organic solvent is used as an adsorbate and can be recycled; the method can be combined with supercritical extraction and supercritical reaction technologies, pesticide residues and impurities in biomass can be efficiently removed, and the safety and the use performance of a bio-based material finished product are further improved.

The application discloses a method for characterizing rock water vapor adsorption behavior, and relates to the field of unconventional oil and gas characterization. The method comprises the following steps: providing a rock powder sample after drying treatment; performing a water vapor adsorption experiment on the rock powder sample to obtain adsorption data of the rock powder sample, wherein the adsorption data comprises water vapor adsorption amounts under different relative humidities; fitting the adsorption data in logarithmic form to obtain a target curve, determining a target relative humidity corresponding to a maximum change point of a slope of the target curve, and the target relative humidity is a relative humidity when capillary condensation of the rock powder sample starts; and determining monolayer adsorption amounts, multilayer adsorption amounts and capillary condensation adsorption amounts of the rock powder sample under different relative humidities according to a Dent adsorption model and the target relative humidity. The application can obtain the monolayer adsorption amounts, the multilayer adsorption amounts and the capillary condensation adsorption amounts of the rock powder sample under different relative humidities, respectively.

The invention belongs to the technical field of porous materials, and particularly relates to a porous carbon material, a regulation and control method and application of a pore structure of the porous carbon material, and a preparation method of a silicon-carbon negative electrode material. By controlling the surface tension and viscosity of the carbon precursor solution, the carbon precursor solution can better enter the pore structure of the porous carbon material, and the carbon precursor solution in the target pore structure can be removed through solid-liquid separation (i.e., the carbon precursor solution can form capillary condensation with the unexpected pore structure); and by limiting the comprehensive residual carbon rate, the carbon precursor can be ensured to realize an effective sealing effect on an unexpected pore structure in the carbonization process, so that regulation and control of the pore structure are realized.

The invention discloses a characterization method of rock water vapor adsorption behavior, and relates to the field of unconventional oil gas characterization, the method comprises the following steps: providing a dried rock powder sample; performing a water vapor adsorption experiment on the rock powder sample to obtain adsorption data of the rock powder sample, the adsorption data comprising water vapor adsorption amounts under different relative humidity; fitting the adsorption data in the logarithmic form to obtain a target curve, determining the target relative humidity according to the relative humidity corresponding to the maximum change point of the slope of the target curve, the target relative humidity being the relative humidity at the beginning of the capillary condensation action of the rock powder sample; according to the Dent adsorption model and the target relative humidity, the single-layer adsorption capacity, the multi-layer adsorption capacity and the capillary condensation adsorption capacity of the rock powder sample under different relative humidity are determined. According to the method, the single-layer adsorption capacity, the multi-layer adsorption capacity and the capillary condensation adsorption capacity of the rock powder sample under different relative humidity can be obtained respectively.

This invention belongs to the fields of chemistry and chemical engineering, and discloses a microporous moisture transfer membrane material modified with hydrophilic nanoparticles and its preparation method. Dopamine or its derivatives are used in a confined polymerization process within a microporous structure to form hydrophilic nanoparticle aggregates with a diameter less than 5 nanometers, which can induce capillary condensation of water vapor. This synergistically improves the water vapor permeability and gas barrier properties of the moisture transfer membrane material. Simultaneously, a hydrophilic modification layer with a roughness between 10.0 and 30.0 nanometers is polymerized on the membrane material surface to enhance the membrane material's ability to capture gaseous water molecules, thereby strengthening the water vapor permeability. The microporous moisture transfer membrane material prepared according to the technical solution of this invention achieves a water vapor permeation rate of 7300 GPU in a saturated humid air environment at 80 °C, while the oxygen permeation rate is only 1.3 GPU. Long-term testing shows that the water vapor permeability and gas barrier properties can remain stable for over 8000 hours.

The invention discloses an oil return control method for a variable-frequency water chilling unit, and relates to the technical field of water chilling units, and the oil return control method for the variable-frequency water chilling unit is characterized in that a variable-frequency compressor, an oil separator, an air side condenser, an oil return capillary tube, a condensation fan, a refrigeration electronic expansion valve and a water side evaporator are included; refrigerant is subjected to oil-gas separation in the oil separator, lubricating oil enters the bottom of the oil separator along the inner wall face of the oil separator, refrigerant gas is located on the upper portion of the oil separator, the refrigerant gas from the oil separator enters the air side condenser for heat release and condensation, and oil in the oil separator is sucked into a water side heat exchange part of the inverter compressor through the oil return capillary tube. The variable-frequency compressor has the advantages that sufficient lubricating oil can be continuously supplied to the variable-frequency compressor in the running process, faults such as excessive abrasion and clamping stagnation caused by oil shortage are avoided, and the stability and reliability of the variable-frequency compressor are greatly improved.

Methods and systems are provided for an omnigravity compatible capillary condensing heat exchanger. A capillary condensing heat exchanger includes an inlet at a first end, a gas outlet at a second end, opposite the first end, a liquid outlet at the first end, and a conduit configured to direct flow of an airstream containing one or more of liquid droplets, humid air, or gas with a condensable vapor from the inlet to the gas outlet and direct liquid droplets out of the airstream and out of the liquid outlet, wherein the conduit comprises a chamber with a teardrop profile normal to a first axis, the conduit further having interior walls with cusp-like ribs oriented normal to the first axis, such that a vertex of the teardrop profile is axially aligned with the gas outlet along a second axis, parallel to the first axis.