279results about How to "Fast desorption" patented technology

Disclosed are extraction device and method utilizing a microwave coal heating layer. The extraction device mainly comprises an extraction and drainage pipe (1), a helical antenna (7), a front-loaded cover (6), a cable (8), a microwave generator (9), a controller (10), a cooling device (11), a gas exhaust pipe (12) and the like. The problems of low extraction rate and extraction speed of existing extraction methods are solved. The extraction method is characterized by including: firstly drilling a hole at an appointed position of an extraction coal layer, paving an anchorage net on the surface of the extraction coal layer and drilling a drill rod to reinforce the coal layer; placing the extraction and drainage pipe with the helical antenna into the drilled hole by the distance 0.6-1.0m away from the coal layer, sealing the hole by high-temperature-resistant cement grouting, and starting the microwave generator to heat the extraction coal layer to the temperature of 80-200 DEG C. After the coal layer is heated, desorption speed of gas is increased, the free gas is increased to cause increase of gas volume of the coal layer, so gas pressure is increased and gas extraction rate of gas of the coal layer in the negative-pressure extraction drilled hole is increased favorably.

The invention relates to microencapsulated fragrance compositions formed by spray drying an oil-in-water emulsion wherein the encapsulating material is a polymeric surfactant, for example polyvinyl alcohol. The encapsulating material contains no additional surfactant material.

The invention discloses an organic amino supported metallic organic framework-porous polymer composite material. The material consists of organic amino, a metallic organic framework material and a porous polymer of multi-stage pore structures which are mutually communicated, wherein metallic organic framework crystal granules are embedded into pore wall surfaces of pore walls of the porous polymer; the organic amino is bonded with the pore wall surfaces of the porous polymer through chemical bonds and bonded with the surface of the metallic organic framework through chemical bonds or coordination bonds; the composite material has a specific surface area greater than or equal to 50m<2> / g. The invention further provides a preparation method of the organic amino supported metallic organic framework-porous polymer composite material. The preparation method comprises the following three steps: carrying out high inner phase emulsion template crosslinking copolymerization, carrying out MOF (Metallic Organic Framework) in-situ growth or MOF multi-time growth, and carrying out organic amino supporting. The organic amino supported metallic organic framework-porous polymer composite materialdisclosed by the invention is used for capturing and separating CO2 and has the advantages of being high in CO2 adsorption capacity / velocity / selectivity, rapid in desorption speed, high in adsorption / desorption circulation stability, excellent in high-temperature and moisture resistance, and the like.

The invention provides porous graphene, a preparation method of the porous graphene and a supercapacitor. The porous graphene simultaneously has a mesoporous structure and a macropore structure, and the tap density of the porous graphene is 0.3-0.5g / mL. Compared with the existing graphene at high specific surface area, the porous graphene provided by the invention has quite high tap density and simultaneously has the mesoporous structure and the macropore structure; the mesoporous structure and the macropore structure endow the porous graphene with quite high specific surface area; when the porous graphene is used as the material for the supercapacitor, the macropore structure provides a fast migration passage for an electrolyte; meanwhile the size of the mesoporous structure is equivalent to that of an ion in the organic electrolyte to facilitate the fast desorption and absorption of the ion, so that the capacitor has quite good large-multiplying power charge-discharge performance.

The present invention relates to the extracting and purifying method of capsanthin pigment with high color number, low spicy degree and no bad taste from ripe chili fruit or peel. The extracting and purifying process includes organic solvent extraction, depression concentration of extractive liquid and separation and purification of the concentrate with macroporous adsorption resin. Measurement in ultraviolet spectrophotometric method shows that the capsanthin pigment of the present invention has color number up to 100 (E449nm) and no spicy taste.

The invention relates to preparation and application of a lignin or an aminolignin-modified magnetic nano-adsorbent. The magnetic nano-adsorbent is obtained by a one-step conversion of lignin and a raw material iron salt by a modified chemical coprecipitation method. The main method is to prepare surface-modified magnetic nanoparticles by dissolving lignin or amino-modified lignin in an alkaline precipitant and using the alkaline precipitant for coprecipitation. The synthesized magnetic nano-adsorbent has adsorption capacity for both anionic dyes and cationic dyes. Compared with other lignin-based adsorbents, the adsorption capacity is increased by about 2 to 5 times. At the same time, desorption can be achieved by adjusting of the pH, so that the adsorbent is recycled, and the dyes can berecovered. Lignin raw materials used in the adsorbent are industrial and agricultural waste materials, the materials are rich and low in price, the synthesis method is simple and efficient, and the adsorbent is economical and environmentally friendly, and has good application prospects.

Membranes for membrane distillation include at least one hollow fiber porous hydrophobic membrane, the at least one membrane including carbon nanotubes incorporated into the pore structure of the membrane. Membrane distillation systems may include a heat exchanger operably connected to a hollow fiber membrane module with one or more membranes including carbon nanotubes. Methods of solvent removal, sample preconcentration and desalination employing hollow fiber porous hydrophobic membranes with carbon nanotubes are disclosed.

The invention relates to a full-automatic shale gas content testing analyzer which comprises a desorbing device, a gas detection device, a data acquisition box and a host computer, wherein the desorbing device consists of a constant temperature water bath box and two desorbing tanks; the desorbing tanks are arranged in the constant temperature water bath box; shale samples can be rapidly put into the desorbing tanks; the gas detection device comprises a box body, a measuring cylinder, a gas collecting bottle and a pressure sensor; a liquid inside the bottle is pressed into the measuring cylinder by a shale gas collected into the gas collecting bottle; the data acquisition box comprises an acquisition box frame, a front panel, a rear panel and a hardware circuit; the hardware circuit is provided with a power supply module, a signal receiving module and a signal processing module; the data acquisition box is used for acquiring a signal detected by the detection device, and used for performing analog-to-digital to transmit to the host computer; the host computer is used for displaying, storing and analyzing the signal. The analyzer provided by the invention is scientific in design and convenient to rapidly disassemble, package and carry over. By adopting the analyzer, full-automatic measurement in the whole gas desorbing process can be achieved, and the measurement precision is high.

The present invention relates to the process of extracting capasaicin from chili fruit or peel and preparing natural capsaicin crystal. Capsaicin is obtained through organic solvent extraction of thespicy component from chili fruit or peel, depressing concentration and separation and purification with macroporous adsorption resin. Liquid chromatographic test shows that the extract has total content of capsaicin and dihydrocapsaicin up to 33%. Re-crystallizing the macroporous adsorption resin purified extract may obtain natural capsaicin crystal with capsaicin, dihydrocapsaicin and nordihydrocapsaicin in the total content up to 97%.

The invention discloses a sustained circulating type method for adsorbing and recycling oil gas , which consists of the following steps: (1) adsorbing and recycling the oil gas by means of an active carbon bed in an adsorption tower; (2) the desorption and regeneration of the adsorption tower saturated is carried out; (3) the oil gas desorbed with high concentration enters a recovery tower to be absorbed by the body of liquid meager gasoline; (4) the tail gas in the recovery tower reenters the adsorption tower to be cycled in a sustaining way, wherein, at least two adsorption tanks in the adsorption tower alternately carry out adsorption and desorption generation, thus leading the oil gas adsorption to be carried out in a sustained circulating way, at the same time, the remote monitoring can be realized by using an automatic control program. The sustained circulating type method for adsorbing and recycling oil gas of the invention is characterized by high efficiency, low energy consumption, convenient operation and safe and reliable running.

The invention provides a preparation method and application of a pH sensitive type magnetic demulsifier with surface charges and hydrophilic-hydrophobic properties controlled. Based on magnetic Fe3O4 nanoparticles, through surface modification with silicon dioxide and a grafting copolymerization reaction, surface active monomers and pH sensitive monomer copolymer chains are introduced on the surfaces of the nanoparticles, and the surface grafting structure and the pH value are further adjusted to control the surface charges and hydrophilic-hydrophobic properties of the magnetic nanoparticles. The reduction of the pH value can enhance the hydrophobic property of the magnetic nanoparticles and reduce negative charge repulsive interaction between the demulsifier and oil droplets so that the demulsifier can be absorbed onto the surfaces of the emulsified oil droplets and quickly isolate the emulsified oil droplets under the action of an external magnetic field. Recycling of the magnetic nanoparticles can be achieved, and the demulsifier is be unlikely to be affected by pollution of negative-ion surface active materials in emulsified oil wastewater. According to the magnetic demulsifier, the preparation method is simple, the recycling process is convenient and efficient, the recycling performance is excellent, and therefore the magnetic demulsifier has very board application prospects in the fields of emulsified oil wastewater treatment and oil-water separation.

The invention discloses a method for preparing a conductive polymer ordered nano membrane which comprises the preparation of a surface active agent ordered membrane and a surface active agent / conductive polymer composite ordered membrane. The method is characterized in that the method of modifying the Langmuir-Blodgett(LB) ordered nano membrane is utilized, active points supplied by the nano membrane are utilized to fix oxidizer, and the method for dispersing adsorption and polymerization of single gas is also utilized to obtain the conductive polymer multi-layer ordered nano membrane. The conductive polymer composite nano membrane obtained by the method has the advantages of ordered laminarization, good conductive performance and adjustable multi-layer distance of membranes. The method can be applied to the preparation of the high-conduction polymer membrane and a gas sensor sensitive membrane.

The invention discloses a method for dehydrating a gas-phase material flow in the production process of polymethoxyl dimethyl ether. The method comprises the following steps: feeding feed gas of the gas-phase material flow through the top of a first-stage adsorption tower, and carrying out adsorption reaction in the first-stage adsorption tower; entering a regeneration stage after completing adsorption through a molecular sieve in the first-stage adsorption tower, and feeding the feed gas of the gas-phase material flow in a second-stage adsorption tower to carry out adsorption reaction; entering an adsorption state again after completing regeneration through the first-stage adsorption tower; entering the regeneration state after completing adsorption through the second-stage adsorption tower; and circulating the above steps till the moisture content in the feed gas of the gas-phase material flow meets requirements. By adopting the above process, the moisture content of a polymethoxyl dimethyl ether rectifying gas-phase material flow is controlled below 0.05%; simultaneously, on the premise of ensuring the adsorption quality, the energy consumption can also be effectively reduced; the utilization rate of an adsorbent is increased; a stripping liquid returns to previous production workshop sections; no pollutant is discharged; and the continuity of the whole workshop section production is ensured.

The invention discloses a rhombus zinc oxide nanorod array, wherein the side length of rhombus is 100-1,000nm, the acute angle of the interior angle of the rhombus is 30-60 degrees, and the length of the array is 5-20 microns. The zinc oxide nanorod array disclosed by the invention has a large specific surface area and high electron mobility, can provide more space to facilitate the fast adsorption and desorption of gas molecules, and obviously improves the performance of the material. The invention also discloses a preparation method of the rhombus zinc oxide nanorod array. By directly combining a chemical bonding agent and zinc salt, nucleation is directly performed on a substrate in the reaction process to grow a zinc oxide nanorod array. The preparation method disclosed by the invention does not need to grow a zinc oxide seed crystal layer or add any template, and has low cost and high efficiency; and moreover, the operation is simple and controllable, the reaction temperature is low, the requirements on equipment are low, and the method is favorable for industrial popularization and has obvious economic and social benefits.

The invention belongs to the technical field of organic polluted soil remediation and discloses a method for remediating phthalic acid esters (PAEs) polluted soil by using microwave enhanced calcium peroxide. The method comprises the steps of preparing a slurry soil mixed solution from the PAEs polluted soil according to a certain liquid-solid ratio; adding a certain quantity of citric acid, ferrous sulfate and calcium peroxide into the solution; and carrying out microwave treatment and standing to enable the degradation rate of PAEs in the soil to reach more than 80%. The method has the advantages of simple process condition, low operation requirement, high treatment efficiency, low oxidizing agent waste and the like and is suitable for remediating the PAEs polluted soil.

The invention discloses a cold and hot type adsorption-desorption device and an adsorption-desorption method thereof, belonging to a device and a method for treating organic waste gas. The device comprises an adsorption tank which is provided with an opening used for leading in waste gas and vacuumizing, a clean gas outlet, a tube pass inlet used for leading in cold medium or hot medium and a tubepass outlet used for leading out cold medium or hot medium; the adsorption tank is internally provided with tube arrays which are evenly distributed in the adsorption tank, and the two ends of the tube arrays are respectively communicated with the tube pass inlet and the tube pass outlet; a shell pass of the adsorption tank is internally filled with adsorbing medium which surrounds the tube arrays; and the adsorption tank also carries out low temperature adsorption and high temperature desorption operations. In the invention, the adsorption tank is provided with tube arrays, and cold medium or hot medium can be led into the tube arrays, thus realizing low temperature adsorption and high temperature desorption operations, reducing the level of vacuumizing, saving energy consumption, substantially reducing requirements on the device in the desorption process, improving the adsorption and desorption efficiency, prolonging the service life of the adsorption medium and saving production cost.

The invention discloses a bionic wall-climbing robot suitable for a complicated narrow and small space in a space station microgravity environment. Technical problems to be solved are that the gait and trajectory planning of a traditional robot are restricted and it is hard for the traditional robot to pass through multiple complicated narrow and small spaces because the multiple complicated narrow and small spaces are available in the space station microgravity environment and the working space of the traditional robot is limited due to a mechanical structure in the background technology. According to the technical scheme, the bionic wall-climbing robot suitable for the complicated narrow and small space in the space station microgravity environment comprises a robot body, four multi-posefast conversion bionic single leg modules and four active adhesion and desorption paw mechanisms; and bionic toe adhesion units are arranged at the tail ends of the four active adhesion and desorption paw mechanisms. The bionic wall-climbing robot suitable for the complicated narrow and small space in the space station microgravity environment has the advantages that a multi-pose and gait conversion mechanism is realized by using a differential gear transmission mechanism; by combining a thigh rotation joint and a leg lifting joint, the flexibility of the leg motion of the robot is improved;by using the active adhesion and desorption paw mechanisms, rapid desorption and gait conversion are realized so that the bionic wall-climbing robot adapts to multiple special poses and motion gaits;and a passing and moving ability in the complicated narrow and small space is realized.

The invention discloses a method for absorbing and separating carbon dioxide, which comprises absorption and desorption of the carbon dioxide at certain temperature and specifically comprises the following steps: mixing alcamines compounds and ethylene glycol compounds to form solution so as to obtain an absorbent; making the absorbent contact the gas to be absorbed in gas-liquid mass transfer equipment to obtain a liquid product; and desorbing and separating the liquid product to obtain the carbon dioxide so as to realize the regeneration of the carbon dioxide. The absorbent adopted by the method can efficiently absorb the carbon dioxide, has little corrosion to the equipment, and can realize the regeneration of the carbon dioxide and the cyclic utilization of the absorbent.

The invention relates to a method for preparing propylene by fluidized bed olefin disproportionation, and mainly to solve the problem of deactivation of a catalyst due to rapid coking in the prior art. According to the technical scheme, ethylene and butylene are used as raw materials, and the raw materials and a fluidized bed catalyst are in contact with each other to react to generate a propylene-containing material flow under the condition that the reaction temperature is 320 to 500 DEG C, the reaction pressure is 0 to 1 MPa based on the absolute pressure, and the weight hourly space velocity is1 to 20 h<-1>, wherein the fluidized catalyst comprises the following components in parts by weight: a) 1 to 20 parts of tungsten oxide and b) 80 to 99 parts of a silicon oxide carrier. According to the method, a problem in the prior art is better solved; the preparation method can be used for the industrial production of propylene by olefin disproportionation.

The invention discloses a preparation method of a conductive polymer one-dimensional nanostructured array. First, an oxidizing agent film is prepared by a spin coating method; then, an oxidizing agent one-dimensional nanostructured array is prepared by an etching method; and finally, the oxidizing agent one-dimensional nanostructured array is exposed to a conductive polymer monomer atmosphere and initiated for polymerization through an in-situ chemical polymerization, so as to obtain the conductive polymer one-dimensional nanostructured array. The preparation method of the polymer nanostructured array provided by the invention overcomes defects in a prior art, and is reasonable, simple and easy for operation.

The invention provides an overlong vanadium pentoxide nanowire harness with a hierarchical structure and a preparation method thereof. The length of the wire harness is not shorter than 10 cm; the diameter of the wire harness is 1-3 microns; the wire harness comprises parallel overlong nanowires; the diameters of the nanowires are 20-30 nm and the lengths of the nanowires are longer than 100 microns to 1 mm. The preparation method comprises the following steps: preparing a vanadium pentoxide sol by using a melting and quenching method; putting 40 ml sol to a reaction kettle; reacting the sol for 2-4 days under a condition of 160-200 DEG C so as to obtain a suspension containing overlong vanadium pentoxide nanowires; enabling a slender glass fiber to extend into the vanadium pentoxide nanowire suspension; lifting the slender glass fiber at a constant speed so as to obtain the wire harness; drying the obtained wire harness; carrying out heat treatment on the wire harness under an air atmosphere under a condition of 400-600 DEG C; and finally obtaining the overlong vanadium pentoxide nanowire harness with the hierarchical structure. A gas sensitive device assembled by using materials has the advantages of rapid response, good stability, sensitivity of 2.6 and low working temperature of 60 DEG C.

This invention pertains to adsorption by an adsorbent of an adsorbate and to regeneration of the loaded adsorbent. The adsorption includes contacting an adsorbent selected from arylene-bridged polysilsesquioxanes and derivatives thereof with an adsorbate selected from aromatics and heterocyclics, particularly monocyclic heterocyclics containing carbon and nitrogen atoms in a 6-member non-aromatic ring, for a period of time sufficient to adsorb all or part of the adsorbate by the adsorbent. Regeneration of the loaded adsorbent includes removing all or part of adsorbate from the adsorbent by means of an alcohol wash or by thermal desorption of the adsorbent containing the adsorbate.

The invention discloses an ethanol gas sensor based on an In2O3 microflower / SnO2 nanoparticle composite material and a preparation method of the sensor, belonging to the technical field of gas sensors. The ethanol gas sensor consists of a nickel-cadmium alloy heating coil, an alumina ceramic tube, a platinum wire, a gold electrode and an In2O3 microflower / SnO2 nanoparticle composite material. By utilizing the catalytic activity of SnO2 on In2O3, the oxidative activity of the material is improved, so that the sensitivity of the sensor is greatly improved, materials with morphology are directly mixed at the first time, the large specific surface area of the material is utilized, and the catalytic characteristics between oxides are utilized. According to the material, ethanol gas molecules are transported on the surface and have the characteristics of rapid adsorption and desorption, so that the response and recovery speed of the sensor is increased. Compared with an ethanol sensor manufactured by In2O3 microflowers which are not compounded with SnO2 nanoparticles, the ethanol sensor disclosed by the invention has the advantages that the sensitivity is greatly improved, and the sensitivity of the ethanol sensor disclosed by the invention is about 9.5 times that of the sensitivity of the ethanol sensor manufactured by In2O3 microflowers.

The invention relates to a movable skid-mounted natural / coal bed gas adsorption and purification system with an external medium heat exchange function, which comprises an adsorption tower system and a heat conduction medium heating circulation and cooling circulation system. The adsorption tower system consists of three adsorption towers which are connected in parallel and are switched to be started; one tower is used for adsorption, another tower is used for heating desorption and the third tower is used for cooling; in the heating desorption process, an adsorbent is heated by a high temperature heat conduction medium which is from external circulation so as to be rapidly heated and desorbed, and simultaneously, a small volume of purified process gas is used as regenerated gas to take away impurities generated in the desorption process; and in the cooling process, the adsorbent is cooled by a low temperature heat conduction medium which is from external circulation, so that the temperature of the adsorbent is rapidly reduced and the regeneration process is completed. Regeneration time of the adsorbent can be shortened; consumption of the regenerated gas is reduced; meanwhile, adsorption period is reduced and the heights of the adsorption towers are reduced; and the adsorption and purification system is miniaturized.

The present invention relates to carbon nanofibers, and more particularly, to a method capable of preparing metal oxide-containing porous carbon nanofibers having a high specific surface area by changing the composition of a spinning solution, which is used in a process of preparing carbon nanofiber by electrospinning, and to metal oxide-containing porous carbon nanofibers prepared by the method, and carbon nanofiber products comprising the same.

Analytes are rapidly desorbed from a carbonaceous sorbent powder with improved quantitation and reduced analyte re-adsorption, thermal degradation, and rearrangement. The sample is distributed in a thin layer onto a desorption surface within a chamber. The layer can be a monolayer. Heating light irradiates the sample through a window, directly and rapidly heating the sample while the desorbed analytes diffuse into a vacuum or are removed by a carrier gas. Finally, the sorbent is flushed from the chamber by a transport gas. The desorption surface can be an inner surface of the window, or a surface of a porous frit that divides the chamber into two sections. The frit can be stainless steel or glass. The carrier gas can be helium, argon, or carbon dioxide. The light source can be a tungsten halogen lamp. A heater can control the chamber temperature according to a heating profile.

The invention relates to a device for remedying soil contaminated by volatile organic compounds. The device for remedying the soil contaminated by the volatile organic compounds comprises a heating control system, a thermal desorption pipe arranged in the heating control system, a rotation control system in transmission connection with the thermal desorption pipe, an air inlet pipeline system and an air outlet pipeline system, wherein the air inlet pipeline system and the air outlet pipeline system are arranged at the two ends of the thermal desorption pipe. A plurality of tooth-shaped shoveling plate are arranged on the inner wall of the thermal desorption pipe. A multi-hole dust filter screen is further arranged at the end, connected with the air outlet pipeline system, of the thermal desorption pipe. The air outlet pipeline system is communicated with an external tail gas absorption system. Compared with the prior art, the device is simple and compact in overall structure and good in sealing performance; by the adoption of the heating control system and the rotation control system, automatic control over heating and rotation can be achieved; operation is easy, and working efficiency is greatly improved; the device is economical and practical; the heat energy utilization rate is high, and the remediation cost is greatly reduced.

The invention discloses a method for processing 3,5,6-trichloropyridine-2-sodium alcohol wastewater. The method orderly comprises the following steps: adjusting the pH value of wastewater to 2-5 by using an acid tail gas generated in the sodium alcohol production process; feeding the wastewater into a microelectrolysis cell; carrying out micro-nano aeration for 2-4 hours; adding 35% of hydrogen peroxide to electrolysis effluent to oxidize for 2-4 hours; adding activated carbon in the treatment process; adding solid sodium hydroxide to adjust the pH to 7-9; removing activated carbon and sludge, and steaming out water which is 80-85% of mass of the wastewater to obtain an industrial salt; adding mother liquor to the next batch of wastewater; and processing again. A micro-nano bubble technology is creatively combined with an iron-carbon micro electrolysis technology to carry out aeration microelectrolysis, and is combined with a fenton oxidation-flocculating settling-distillation process, so that not only is the sodium alcohol wastewater effectively processed, but also the problem of tail gas emission in the sodium alcohol production process is solved, and meanwhile, the by-product industrial salt is economical and environment-friendly, and safe and reliable.