182results about How to "Large mass transfer area" patented technology

Disclosed is amultichannel reactor with microstructure. Continuous phase inlet pipe and distribution chamber, discontinuous phase inlet pipe and distribution chamber, mixture phase buffer chamber and fluid outlet pipe connects separately, and they compose the lower cavity. Porous distribution medium is sealed in the upper distribution chamber of discontinuous phase. A parallel channel plate of continuous phase is located above the lower cavity and the upper is sealed. The continuous phase liquid flows into the reactor from the distribution chamber of inlet pipe; the discontinuous liquid flows into the parallel channel of continuous phase following through the distribution medium, distributes into minute drop or air bubble with the floating shearing force of continuous phase liquid, and then connects with the continuous phase liquid to realize the rapid mixture and reaction of the two- phase liquid; then the liquid flows out of the reactor. With the invention, the area of mass transfer is big, the reaction conversion rate is high, and large scale production can be realized.

The invention provides a reactor or a blender with micro sieve mesh structure, which relates to the fluid micro dispersion technology and equipment. The invention contains micro sieve mesh structure, a hybrid channel and a fluid distribution chamber, and utilizes the micro sieve mesh to disperse one fluid to another fluid in a form of micron-sized drop or bubble, the blending and reaction process of the drop and the bubble which have high dispersion and high specific surface are rapidly finished in the hybrid channel, so the invention is a novel microstructure reaction vessel or blender which utilizes the micro sieve mesh structure to realize the reaction or blending of homogeneous phase or non homogeneous phase fluid. The invention is characterized by simple processing, convenient operation, large treating capacity for unit volume and so on and can be widely applied to a number of fields like the chemistry, chemical engineering, petrochemistry, medicine, foodstuff, etc.

The invention discloses a method for preparing dry powder by sludge, which comprises the following steps: uniformly mixing the following components in percentage by weight: 50-85 percent of sludge containing 40-98 percent of water, 14-40 percent of conditioner and 1-10 percent of deodorizing bactericide at room temperature; and then, drying the mixture through airing or afterheat and the like to acquire the sludge dry powder. The invention solves the problem of difficult municipal sludge treatment, greatly reduces the cost for sludge dehydration and drying, and prepares the sludge into dry powder. The sludge dry powder can be used for land utilization, used as solid fuel with a low combustion value, used as the raw material for producing clay or bricks or concrete and also used for direct sanitary landfills.

The invention discloses a method for preparing tea tree flower essential oil. The method comprises the following steps: firstly, preparing a tea tree flower raw material into an sizing agent, adding a composite enzyme system for enzymolysis on the sizing agent so as to obtain first slurry; secondly, adding a defoaming agent into the first slurry so as to obtain second slurry; finally conveying the second slurry to a rotational conical distillation column for enhancing the fragrance, collecting a tea tree flower fragrance extract, and further separating by using an oil-water separator, thereby obtaining the tea tree flower essential oil. The composite enzyme system is adopted to treat tea tree flowers, so that the content of the effective fragrance component in the tea tree flowers is remarkably increased, release of precursor substances of the tea tree flower fragrance is promoted, the tea tree flower aromatic substances can be efficiently and comprehensively recycled by using SCC equipment, the yield of tea tree flower essential oil is greatly increased, and the natural flavor of the tea tree flower essential oil is effectively maintained.

The invention discloses a magnetic nano lithium ion sieve adsorbent and a preparation method thereof. The magnetic nano lithium ion sieve is a Fe3O4 / LixMnyO4 shell structure in which nano Fe3O4 superparamagnetic material is used as a kernel and nano lithium-manganese oxide lithium ion sieve film is used as a shell, wherein the ratio x / y is between 0.5 and 1.5. The preparation method comprises the following steps of: synthesizing Fe3O4 / MnCO3+Li2CO3 gel particles at a time by use of a self-developed narrow-channel impact flow reactor; and performing water heating, leaching, drying, baking and acid leaching to obtain the product of magnetic nano lithium ion sieve adsorbent. According to the invention, the synthesized magnetic nano lithium ion sieve has the advantages of high specific surface area, high dispersity, high absorption / desorption rate, quick recovery and the like, and is particularly suitable for the process of large-scale lithium extraction from a dilute lithium solution; the absorption / desorption performance of the lithium ion sieve can be remarkably improved, and the dissolution loss rate of the lithium ion sieve is reduced; and moreover, the preparation method of the magnetic nano lithium ion sieve has simple technology, large yield and low cost, and can be magnified to a large scale easily.

The invention provides a built-in micro-interface unit enhanced reaction system for producing PTA through PX and a process thereof. The system comprises a reactor and a micro-interface unit arranged in the reactor. The reactor comprises a shell, an inner barrel concentrically arranged in the shell, and a circulating heat exchange device partially arranged outside the shell; wherein the bottom endof the inner cylinder is connected to the inner bottom surface of the shell in a closed manner, the top end of the inner cylinder is open, an area between the shell and the inner cylinder is a first reaction area, a second reaction area and a third reaction area are sequentially arranged in the inner cylinder from top to bottom, and the circulating heat exchange device is respectively connected with the inner cylinder and the micro-interface unit. According to the method, the problems that a large amount of reaction solvent acetic acid is wasted at high temperature and high pressure and a product TA cannot be taken out in time in the existing process of producing PTA through PX are effectively solved, so that the energy consumption is greatly reduced, an acetic acid solvent is saved, and the reaction efficiency is improved.

The invention relates to a method for extracting curcumin from fresh ginger. According to the method, fresh ginger raw materials are directly used without drying, an extraction process adopts wall breaking of a flash extraction device, compound enzyme enzymolysis and an ultrasonic-assisted sodium salicylate ethanol solution extraction method, a technique combined wall breaking of a flash extraction device with compound enzyme enzymolysis greatly improves extraction efficiency, most of impurities in solution can be remained in mother solution through crystallization, high-purity crystals can beacquired through filtering and washing, a HPLC (high performance liquid chromatography) detects that purity can reach 90% or more after crystallization, and the HPLC detects that the purity can reach97% or more after recrystallization.

The invention discloses a device and a method for preparing biodiesel. The device comprises a pipeline system, a reaction system and a measurement system, wherein the pipeline system comprises a raw material circulating storage box, a material circulating pump, an inflow pipeline, a return pipeline, an adjustable butterfly valve, and an unadjustable butterfly valve, the reaction system comprises a hydrodynamic cavitation reactor, a hydrodynamic cavitation porous plate, a striking room, and a motor driving rotating nozzle, and the measurement system comprises an upstream pressure gage and a downstream pressure gage as well as a flowmeter. Based on the coupling hydrodynamic cavitation and rotating impinging stream technologies, the device realizes efficient preparation of biodiesel. Circulating fluid flows through throttling holes in the porous plate inside the cavitation reactor, so that the cavitation phenomenon increases the turbulence intensity of the fluid, and the mass transfer area of an alcohol phase and an ester phase is greatly increased; the rotating impinging stream technology strengthens the tangential force in collision and enhances the cavitation effect on the collision surface; the device runs safely, has low running cost, can greatly improve the preparation efficiency of biodiesel, and shortens the preparation time of the biodiesel.

Disclosed is amultichannel reactor with microstructure. Continuous phase inlet pipe and distribution chamber, discontinuous phase inlet pipe and distribution chamber, mixture phase buffer chamber and fluid outlet pipe connects separately, and they compose the lower cavity. Porous distribution medium is sealed in the upper distribution chamber of discontinuous phase. A parallel channel plate of continuous phase is located above the lower cavity and the upper is sealed. The continuous phase liquid flows into the reactor from the distribution chamber of inlet pipe; the discontinuous liquid flows into the parallel channel of continuous phase following through the distribution medium, distributes into minute drop or air bubble with the floating shearing force of continuous phase liquid, and then connects with the continuous phase liquid to realize the rapid mixture and reaction of the two- phase liquid; then the liquid flows out of the reactor. With the invention, the area of mass transfer is big, the reaction conversion rate is high, and large scale production can be realized.

A high-efficiency gradient hierarchy complex desulfurizing tower includes a tower body. The tower body tower includes an oxidization and crystallization stage, a coarse desulfurization and dedusting stage, a fine desulfurization and dedusting stage, and a horizontal demisting stage from the bottom up. The oxidization and crystallization stage tower includes a pond and a separation mechanism provided in the pond and separating the pond into an upper area and a lower area. The coarse desulfurization and dedusting stage tower includes a gas distributing board and a multi-layer spray layer that are placed above a gas import, the spray layer being in connection with the pond. The fine desulfurization and dedusting stage tower includes a tube demister, a flushing layer, a film liquid holdup layer, a liquid holdup layer recycling can, the pH of slurry in the liquid holdup layer recycling can being higher than the pH of slurry in the pond.

The invention relates to a production method for glyoxylate. The invention mainly aims to overcome the problem of low yield of glyoxylate in the prior art. The method comprises a step of contacting oxygen-containing gas, glycollate, a diluent and carrying gas with a catalyst in a reactor under gas-phase oxidation conditions. With the technical scheme that the oxygen-containing gas is allowed to pass through a ceramic membrane distributor and then enter a reactor, the above problem is overcome, and the production method is applicable to industrial production of glyoxalate from glycollate through oxidation.

The invention provides a reactor or a blender with micro sieve mesh structure, which relates to the fluid micro dispersion technology and equipment. The invention contains micro sieve mesh structure, a hybrid channel and a fluid distribution chamber, and utilizes the micro sieve mesh to disperse one fluid to another fluid in a form of micron-sized drop or bubble, the blending and reaction processof the drop and the bubble which have high dispersion and high specific surface are rapidly finished in the hybrid channel, so the invention is a novel microstructure reaction vessel or blender whichutilizes the micro sieve mesh structure to realize the reaction or blending of homogeneous phase or non homogeneous phase fluid. The invention is characterized by simple processing, convenient operation, large treating capacity for unit volume and so on and can be widely applied to a number of fields like the chemistry, chemical engineering, petrochemistry, medicine, foodstuff, etc.

The invention discloses a labyrinth type hypergravity liquid-liquid extraction separator which comprises a housing, a filler helix tube, a mixed mass transfer mechanism, a separation collection mechanism, a top cover plate, a pedestal, a bearing sleeve, a shaft and a motor. The mixed mass transfer mechanism comprises a feed planet impeller mixing device, a mass transfer device and conical milling fluid wheels. The mass transfer device is arranged between the feed planet impeller mixing device and the conical milling fluid wheels. The separation and collection mechanism comprises a phase-splitting trough, a spring switch and a collecting tank. By the extraction separator provided by the invention, high-efficiency extraction is realized, and two-phase separation is also considered. A multi-layer packing structure increases mass transfer area of a two-phase fluid. Due to the complex packing layer structure, mixing is more uniform. Reaction time is prolonged, and extraction rate is enhanced. The separation and collection mechanism, used as an important part of the extraction process, realizes integration of extraction and separation.

The invention relates to a device for removing hydrogen sulfide in gas by using a gas delivery pipeline, which comprises a gas delivery pipeline, wherein the gas delivery pipeline is basically horizontal, the diameter of the gas delivery pipeline is greater than or equal to 0.3m, the length-to-diameter ratio is greater than or equal to 10, and the gas flow rate in the gas delivery pipeline is 3-10 m / s; a liquid outlet is arranged on the gas delivery pipeline; in the gas delivery direction, the tail end of the gas delivery pipeline is provided with a gas outlet; and in the gas delivery direction, a plurality of atomizing nozzles for jetting a desulfurization liquid or desulfurization slurry are sequentially arranged in the gas delivery pipeline. In the device provided by the invention, the gas delivery pipeline is used as the location for desulfurizing H2S. Compared with the desulfurization tower or other desulfurization reactors in the prior art, the invention does not need to additionally construct any desulfurizing unit, thereby effectively lowering the construction cost of the equipment.

The present invention discloses one kind of regular helical cylindrical net packing, and belongs to the field of gas-liquid mass transfer separator packing technology. The regular helical cylindrical net packing unit includes a cylindrical helical net and a conic disc on the upper end of the cylindrical helical net. The cylindrical helical net is one multilayer one made of plate net and springs and has several supporting spring rings between helical net layers. The conic disc includes a short helical plate cylinder in the same diameter, layer number and interval between layers and a helical cone disc connected to the short helical plate cylinder. The packing of the present invention is used in gas-liquid mass transfer process, and has the advantages of parallel gas and liquid channels, plunger type flow with low gas phase resistance and high mass transfer efficiency, easy processing of the packing and low cost.