86results about How to "Achieve desorption" patented technology

The invention relates to a coal bed gas high pressure desorption meter, while the prior coal bed gas high pressure constant temperature adsorption instruments utilizes coal powder samples to test coal bed gas constant temperature adsorption parameters, and the coal bed gas desorption test generally utilizes normal-pressure desorption instruments, to test the parameters of drilling well coal core, such as coal bed gas content and adsorption time and the like. The coal bed gas high pressure desorption meter comprises an automatic temperature control water bath apparatus, a stainless steel mechanical device, and an image and pressure data acquisition system, wherein the stainless steel mechanical device comprises a gas collection cylinder, a sample cylinder, a gas regulation cylinder, a frame, a high pressure pipeline and a valve, the cylinder is fixed on the frame, the frame and the cylinder are arranged in the automatic temperature control water bath device, and the frame is connected with a lifting machine. The invention can effectively simulate reservoir bed conditions and discharge-mining working systems, realize the switch between gas-solid two-phase system and gas-liquid-solid three-phase system under high pressure condition, the desorption, gas collection and measurement processes under high pressure water injection conditions, effectively observe the desorption of coal bed gas, and test the parameters such as desorption pressure, desorption quantity and lost gas quantity and the like.

The invention belongs to the field of ship tail gas treatment, energy conservation and environment protection, and particularly relates to a ship tail gas denitration technology and system and a desulfurization and denitration integrated technology and system. When low sulfur oil is used for a ship, the ship tail gas denitration technology and system can achieve high denitration efficiency and reduce energy consumption; when high sulfur content is used for the ship, desulfurization and denitration are combined together, high desulfurization and denitration efficiency is achieved, meanwhile, the cost is greatly saved, and the tail gas exhaust standards are met. The ship tail gas denitration technology comprises the steps of 1, tail gas cooling, 2, NOX adsorption, 3, desorption of NOX adsorbed on an adsorbent, 4, low-temperature plasma decomposition and 5, absorption and reduction. The ship tail desulfurization and denitration integrated technology comprises the steps of 1, tail gas cooling, 2, washing performed through washing water, 3, soda absorption, 4, NOX adsorption, 5, desorption of adsorption water adsorbed on an adsorbent, 6, desorption of NOX adsorbed on an adsorbent, 7, low-temperature plasma decomposition and 8, absorption and reduction.

The invention belongs to the field of functionalized ionic liquid immobilization, and discloses a functionalized ionic liquid hybrid mesoporous molecular sieve MCM-48 composite material and a preparation method and application thereof. The preparation method comprises the following steps: (1) uniformly mixing ethanol, deionized water and ammonium hydroxide, adding a template agent, and stirring until the template agent is completely dissolved; (2) preparing the functionalized ionic liquid by using two precursors, and mixing the functionalized ionic liquid with tetraethoxysilane; (3) dropwise adding the mixed solution obtained in the step (1) to generate a flocculent product, transferring the flocculent product in a polytetrafluoroethylene reaction still and carrying out hydrothermal crystallization; and (4) suction-filtering, chemically extracting filter residue, washing, drying in vacuum, activating to obtain the functionalized ionic liquid hybrid mesoporous molecular sieve MCM-48 composite material. The composite material prepared by the method disclosed by the invention combines the dual adsorption effect of the functionalized ionic liquid and MCM-48 on the post-FGD, and the good adsorption effect can be realized at low temperature.

The invention provides a near-field needle-point reinforced photoionization ion source, relating to an ion source of a mass spectrometer. The ion source comprises a light source, a needle point, solid samples and an ion sampling device, wherein beams sent by the light source pass through the needle point and then radiate the surface of the solid samples; and the distance between a sampling hole of the ion sampling device and the surface of the solid samples is 0.1-50mm, an output end of the ion sampling device is connected with a mass analyzer of the mass spectrometer, and the mass analyzer of the mass spectrometer acquires a spectrogram with the information of the tested solid samples. By using the near-field needle-point reinforced photoionization ion source, the space resolution of microanalysis is high, the deep analysis of the thickness of a molecular layer (or atom layer) can be realized, the sample consumption is low, and the analysis of almost all solid samples can be realized.

The invention discloses a quantum dot/titanium dioxide composite nanodot array having visible-light response. On the surface of a substrate, each nanodot in the composite nanodot array is composed of titanium dioxide covered visible-light response quantum dots; the dimension of the composite nanodots ranges from 50-200nm and the density of the composite nanodots ranges from 0.31*10<10> to the power of 10 to 3.01*10<10> to the power of 10 cm<-2>. The preparation process is a one-step method and specifically comprises the following steps: adding the quantum dots while preparing a spin-coating solution, applying the spin-coating solution to the surface of the substrate by use of a sol-gel spin-coating method, and preparing the quantum dot/titanium dioxide composite nanodot array by use of a hydrothermal method or direct annealing; the process is simple and easy to implement. The response and the utilization rate of the composite nanodot array to light can be regulated by regulating the types of the quantum dots and the excitation waveforms of the quantum dots; besides, the hydrophobicity and the hydrophilicity of the surface of the material can be changed by use of visible light different in wavelength, and therefore, later cell detachment is realized and the visible light can be possibly used for cell detachment.

The invention provides a device for dewatering and dealkylating methane-rich gas. The device comprises a first gas feeding pipeline, a gas producing pipeline, a second gas feeding pipeline, a circulating-gas pipeline, a cooling-gas pipeline and a heat exchanger (E), wherein a first gas inlet of the heat exchanger is communicated with the cooling-gas pipeline. The device also comprises a heater (F), a heating gas pipeline, a desorbing gas pipeline, a cooler, a separator, four adsorbing towers and valves. The device provided by the invention comprises three independent gas channels, the four adsorbing towers form three gas channels and work simultaneously by controlling different valves, so that the heat is fully utilized and the energy consumption is reduced, simultaneously the operating load of the heater and the cooler is stabilized, and the operation of the whole device is stable. Therefore, the four adsorbing towers carry out different treating processes, and the heat is repeatedly utilized, so that the energy consumption is greatly saved.

The invention belongs to the field of radioactive elements separation, and particularly relates to a method for extracting technetium from a molybdenum solution adopting polyamide resin. The method comprises the following steps: (1) preparing a molybdenum and technetium mixed solution with the concentration of hydroxide ions being greater than or equal to 1 mol/L; (2) adsorbing technetium in the molybdenum and technetium mixed solution obtained in the step (1) by adopting polyamide resin; (3) adopting a scrubbing solution for cleaning so as to remove a small amount of molybdenum adhered on the surface of polyamide resin; (4) desorbing technetium adsorbed on the surface of polyamide resin by adopting a leacheate with the concentration of hydroxide ions being smaller than 1 mol/L. The method for extracting technetium from the molybdenum solution adopting polyamide resin has the characteristics that the radiation resistance of a solid-phase separation material is good, the adsorption separation performance is stable, and the solid-phase separation material is low in cost and easy to obtain.

The invention relates to a graphite purification process, in particular to a method for purification of natural graphite by ion exchange resin under the assistance of an external direct-current electric field. The preparation process includes: mixing graphite serving as the raw material with a sodium hydroxide solution evenly, raising the temperature from room temperature to 450-650DEG C, and maintaining the temperature for 60-90min; conducting cooling and washing to neutral; mixing the product with hydrochloric acid, performing stirring at 70DEG C for 4h; conducting washing to neutral; placing the graphite sample and high purity water at both poles of a direct current power supply to form a closed loop system, the direct current power supply positive pole and negative pole of which are respectively fixed with water treatment anion exchange resin and water treatment cation exchange resin that are coated with fine gauze or semi-transparent film; applying a constant voltage and letting the voltage act for 30-60min, and carrying out filtering and drying. The method provided by the invention has the advantages of simple technological operation, small energy consumption, short time, small pollution and low production cost, and is in accordance with industrial development requirements of fluorine-free production, and the purified graphite has fixed carbon content up to 99.9%-99.99%.

The invention provides a method for separating and purifying graphene quantum dots by utilizing a molecular sieve. The method is characterized by comprising the following steps: step 1, at the room temperature, mixing an initial graphene quantum dot solution with a molecular sieve in a certain proportion to obtain a reactant; step 2, centrifuging the reactant to obtain a graphene quantum dot-molecular sieve containing graphene quantum dots; and step 3, adding a desorbing agent to the graphene quantum dot-molecular sieve, and performing reflux condensation under the condition of 70-100 DEG C soas to desorb the graphene quantum dots. The graphene quantum dots obtained by the method through separation and purification are uniform in particle size distribution, high in purity and high in quantum yield. The method provided by the invention is simple in process, easy to operate and short in operating time; both initial graphene quantum dot solutions prepared by a 'from-top-to-bottom' methodand a 'from-bottom-to-top' method can be separated and purified by the method provided by the invention; and the method provided by the invention can also respectively separate graphene quantum dotswith different particle sizes in the initial graphene quantum dot solutions.

The invention provides a temperature-pH responsive molecularly-imprinted fiber membrane and a preparation method thereof, belonging to the field of polymer functional materials. The preparation method of the temperature-pH responsive molecularly-imprinted fiber membrane comprises the following steps: preparing a nanofiber membrane from chitosan by using an electrostatic spinning technology, and then grafting a temperature responsive polymer poly(N-isopropylacrylamide-co-N-tert-butylacrylamide)-co-methacrylic acid on the surface of the nanofiber membrane through a free radical polymerization reaction. A prepared material has specific recognition capacity on dyes or heavy metal ions, the maximum adsorption capacity of the material on gentian violet dyes reaches 212.0 mg/g, adsorption equilibrium time is 7 min, and an desorption rate reaches 97%. The morphology of the fiber membrane is kept in a solution with a pH value of 6.0-14.0; the fiber membrane is dissolved in a solution with a pH value of 1.0-6.0; the molecular chain of a polymer brush is hydrophilic and is stretched when the temperature is lower than 32.5 DEG C; and the molecular chain is curled up and separated out from water when the temperature is higher than 32.5 DEG C. After adsorption is finished, pollutants can be easily and rapidly separated out due to temperature and pH responsiveness, so effective removal and enrichment of the pollutants are realized. The fiber membrane has a good application prospect in the aspects of environmental protection and water quality detection and analysis.

The invention relates to the field of chemical equipment, mainly relates to silica gel regeneration adsorption equipment and particularly provides a silica gel regeneration adsorption tower and a method thereof. The silica gel regeneration adsorption tower comprises a tower body, heat conducting plates, a sintering plate, a feeding distributor and a far infrared heater, wherein the tower body is filled with silica gel, and is coated with the far infrared heater; the upper part of the tower body extends out of the far infrared heater upwards; the feeding distributor is arranged at the upper part of the tower body which extends out of the far infrared heater and is close to the top end of the tower body; the uniformly distributed heat conducting plates are arranged in the tower body vertical to the bottom surface and are laminated with silica gel; a vacuum pump is also arranged at the lower part of the tower body; and a discharge hole is arranged in the lower part of the vacuum pump. According to the silica gel regeneration adsorption tower, regeneration of the silica gel in the tower is achieved, repeated taking and filling are avoided, the production cost is reduced, the silica gel is repeatedly used, silica gel adsorption oil can be recovered and the silica gel regeneration adsorption tower has considerable economic benefits, and is simple in operation, economic and environment-friendly.

The invention provides cellulose foam capable of visually identifying and removing chromium as well as a preparation method thereof and a chromium removal method. The preparation method comprises thefollowing steps: adding epichlorohydrin into a cellulose solution, stirring until the color of the solution becomes light, adding a PEI solution, uniformly stirring, crosslinking at 25-60 DEG C for 5-60 minutes to form hydrogel, washing with deionized water, and carrying out freezing and freeze-drying, thereby obtaining the product. The cellulose foam prepared by the invention can be used for quickly identifying and removing Cr(VI) in a relatively wide pH range. According to the method, the electrostatic adsorption and subsequent oxidation-reduction process of Cr(VI) can be regulated and controlled, it is guaranteed that the structure of the adsorbent cannot be damaged due to the oxidation reaction while Cr(VI) is removed, the regeneration speed of the material adsorbing Cr(VI) is high, and the structure of the adsorbent cannot be damaged in the regeneration process.

The invention discloses a heating well used for in-situ repair engineering of a contaminated site. The heating well is arranged in the contaminated site from the ground to the underground and is of aninner-outer concentric sleeve structure. The heating well comprises an inner pipe and an outer pipe arranged outside the outer pipe in a sleeving mode. A bottom cover is arranged at the bottom of theouter pipe, and the bottom of the inner pipe is an opening without a bottom cover. A gap is formed between the inner side wall of the outer pipe and the outer side wall of the inner pipe. The outer pipe is mounted in a soil hole downwards pre-formed in the contaminated site from the ground, and a gap between the outer side wall of the outer pipe and the inner wall of the soil hole is filled witha filler. A plurality of different-height thermocouple temperature measuring probes are arranged in the filler. The top end of the heating well is a hot air inlet, and the hot air inlet is connected with a hot air furnace. A hot air exhaust is formed in the side wall, higher than the ground part, of the heating well, and a hot air regulating valve is arranged at the hot air exhaust. The heating well used for in-situ repair engineering of the contaminated site has the outstanding characteristics that the safe and reliable effects are achieved, the thermal desorption temperature is high, the repairing effect is good, and the pollutant concentration after repairing does not bounce.

The invention provides a low-temperature extraction device and method of active ingredients of natural products.The low-temperature extraction device comprises a countercurrent extraction unit, an ultrasonic extraction unit, a membrane concentration unit and an enzyme adding unit, the enzyme adding unit is communicated with the countercurrent extraction unit, a residue outlet of the countercurrent extraction unit is connected with a to-be-extracted raw material feeding port of the ultrasonic extraction unit, an extract outlet of the ultrasonic extraction unit is connected with a to-be-separated liquid inlet of the membrane concentration unit, and a concentrate outlet of the membrane concentration unit is connected with a solvent inlet of the countercurrent extraction unit.Low-temperature enzymolysis technology is combined with countercurrent extraction and ultrasonic extraction, the extraction process is completed at low temperature (15-50 DEG C), extraction assisting effect of a biological active enzyme and concentration gradient increasing effect of countercurrent extraction jointly guarantee effective extraction rate of the active ingredients; ultrasonic extraction is performed on extraction residue of the natural products only, so that energy consumption is saved, recycling of the active enzyme is realized, and cost is lowered.

The invention relates to a carbon dioxide adsorption recovery method, and belongs to the field of environment protection. The carbon dioxide adsorption recovery method uses adamantyl porous polymers as a carbon dioxide absorption adsorption material, and comprises the following processes including an absorption adsorption process of contacting the adamantyl porous polymers and treatment objects soas to adsorb carbon dioxide, and a desorption process for of desorbing carbon dioxide from the adamantyl porous polymers adsorbingabsorbed with the carbon dioxide. The adamantyl porous polymers are used; the adsorption recovery of carbon dioxide gas is realized. The adamantyl porous polymers have good carbon dioxide adsorption performance.

The invention discloses a low-energy-consumption drying device. A fan (1) is sequentially connected with a gas heater (2) and a drying room (3), a hot water supply tank (12) supplies heat to the gas heater (2), cold water completing heat exchange is heated by a solar heater (14) and returns to the hot water supply tank (12), a regeneration fan (6) is connected with a first moisture adsorption device (4) and a second moisture adsorption device (5) through a solar gas heating device (17) respectively, and heated air performs desorption on the moisture adsorption devices in an adsorption saturation state. The low-energy-consumption drying device has the benefits as follows: solar energy is sufficiently utilized, power consumption used for water heating is reduced, energy consumption is greatly reduced, the device is more environment-friendly, green energy resources are sufficiently utilized, and the regeneration efficiency of the moisture adsorption devices is improved.

The invention aims to provide an integrated treatment device for ship waste gas. The integrated treatment device for the ship waste gas comprises a waste gas three-way valve, a ventilation three-way valve, a WHR system, a pollutant adsorption device, a washing tower and an air bottle. The waste gas of a marine diesel engine communicates with an inlet of the waste gas three-way valve; a first outlet of the waste gas three-way valve communicates with a discharge pipe, and a second outlet of the waste gas three-way valve communicates with an inlet of the ventilation three-way valve; a first outlet of the ventilation three-way valve communicates with a high-temperature waste gas inlet of a desorption chamber; the gas of the desorption chamber is discharged into the washing tower from a high-concentration pollutant waste gas outlet; a second outlet of the ventilation three-way valve communicates with a low-temperature waste gas inlet of an adsorption chamber through a WHR system; a first outlet of the air bottle is connected with an NO oxidation device in the washing tower; a second outlet of the air bottle is connected to a compressed air inlet of the adsorption chamber; and the gas ofthe adsorption chamber communicates with the discharge pipe through a clean waste gas outlet. The problems of low removal efficiency, serious secondary pollution, difficulty in running and maintenance and the like in a traditional ship integration technology are solved.

The invention belongs to the technical field of functional polymer materials and biology, and particularly relates to functional organic silicon resin for protein adsorption and light-operated desorption and a preparation method of the functional organic silicon resin. A quaternary ammonium group and a photosensitive coumarin group are introduced into organic silicon resin; protein molecules withthe isoelectric point smaller than 7.4 are adsorbed to the surface of the functional organic silicon resin through electrostatic interaction, coumarin photosensitive groups are dissociated after irradiation of a 410 nm light source, the charge property of the surface of the organic silicon resin is reversed, and the protein molecules are in a desorption state. The preparation method of the functional organic silicon resin is simple in synthesis process; the preparation method is simple, reaction conditions are mild, operability is high, the obtained functional organic silicon resin has good biocompatibility, photoresponsiveness and light-operated protein molecule desorption capacity, the desorption behavior of protein molecules can be accurately regulated and controlled by adjusting the illumination position and the illumination time, and important application value is achieved.