40 results about "Dehydration" patented technology

This invention relates to one kind of method to use abandoned grease to produce epoxy plasticizer, its characteristic lies in: Use the abandoned grease as raw materials, by pretreatment, the obtained glycerin ester to ester exchange respond with the methyl alcohol under alkali catalysis, then get fatty acidmethyl ester, then again with the peroxide organic acid, which is the reaction products of hydrogen peroxide and organic acid, to directly epoxy respond, get the raw epoxy fatty acid methyl ester, then wash off the acid by water, and obtain the epoxy fatty acid methyl ester by distillation and dehydration product. The raw material cost of this invention is low, originates broadly, conforms to the green environmental protection requirement, and the craft is simple, does not pollute environment, so it is the good substitute of petroleum product.

The invention discloses a continuous preparation technology of high-purity low-viscosity dimethicone. The continuous preparation technology comprises the following steps that 1, a mixture of methylcyclosiloxane and an end-capping reagent is orderly subjected to liquid nitrogen freezing dehydration and deep dehydration until the water content of the mixture is less than 300ppb; 2, the treated mixture is subjected to adsorption filtration, nanofiltration membrane filtration and pre-heating, then is fed into a fluidized bed with a catalyst and undergoes a catalytic reaction; and 3, reaction products are subjected to adsorption filtration, nanofiltration membrane filtration and a low-boiling-point substance removal process so that a low-boiling-point substance is removed and the high-purity low-viscosity dimethicone is obtained. The high-purity low-viscosity dimethicone obtained by the continuous preparation technology has the advantages of low ion content, low hydroxyl content and low solid content. The continuous preparation technology has a raw material utilization rate of 100%, realizes zero discharge, is an environmentally friendly green technology and is suitable for low-viscosity dimethicone production.

A system and method for separating air into components uses an air dehydration membrane for removing water vapor from compressed air. Dried compressed air is then directed, from the dehydration membrane, into a gas separation module which may be a membrane system, different from the air dehydration membrane, or a pressure swing adsorption (PSA) system. The air dehydration membrane is made of a hydrophilic polymer having a permeability for water vapor which is greater than its permeability for air, and having low selectivity between oxygen and nitrogen. The air dehydration membrane has a hydrophilic coating, which itself may be a polymer. The coating does not affect the selectivity of the coated dehydration membrane with respect to oxygen and nitrogen, but does increase selectivity of the membrane with respect to water vapor.

The invention provides a sludge-based adsorbent used for desulfurization and demercuration of flue-gas and a preparation method thereof. The sludge-based adsorbent employs municipal sludge and/or papermaking sludge as a raw material. The preparation method comprises the following steps: adding an activator and a physical conditioning agent into sludge slurry and carrying out mixing under stirring and mechanical dehydration; carrying out grinding and screening after drying; and carrying out physical activation after pyrolysis in an inert atmosphere so as to prepare the sludge-based adsorbent. According to the invention, the sludge slurry is used as a raw material, and uniformity of the activator and the physical conditioning agent is improved by using a wet method and the means of mixing; the activator and the physical conditioning agent can reduce repulsive interaction and hydrophilic interaction among electronegative sludge particles, and a porous lattice structure with a hard texture and good permeability is formed in a sludge cake obtained after pressure filtration and dehydration; the prepared adsorbent can be used for desulfurization and demercuration of flue-gas; and the preparation method has the advantages of simple procedures, easily controllable conditions, capacity of realizing harmony and unity of sludge treatment and resource utilization and good economic benefits, environmental benefits and social benefits.

The invention discloses a method for refining rice bran oil by using short distance distillation. The method is implemented by putting crude rice bran oil in a buffer pot directly, transferring into a primary film evaporator by a pump for dehydration and desaeration, performing primary dehydration and desaeration under conditions of temperature being 60-120 DEG C and pressure being negative 0.8MPa to negative 0.95MPa; pumping the dehydrated and desaerated rice bran oil into a secondary short distance evaporator for deacidification with temperature controlled at 100-200 DEG C and pressure at 100-0.1Pa to obtain oleic acid with high acid value and rice bran oil with low acid value. The invention avoids heavy pollution processes of alkali refining and neutralizing chemical process for obtaining soda soap and process discharging waste water of washing when processing rice bran oil, the procedure is simple, high value oleic acid and low acid value rice bran oil can be distilled and separated, and the separation process is a physical process, the rice bran oil has no loss and the yield is very high.

The invention discloses a halogen-free flame retardant and a preparation method thereof and a flame-retardant polyolefin composition composed of the same. The structural formula of the halogen-free flame retardant is shown in the description, wherein the ratio of x to y to z is 1:(5-10):(1-5). The preparation method comprises the steps that melamine, phosphoric acid and piperazine are weighed and put into a high-speed mixer of which the top is provided with a liquid spray device to be stirred and mixed to be uniform, and a halogen-free flame retardant premixed material is obtained; the halogen-free flame retardant premixed material is subjected to a high-temperature dehydration condensation reaction, and the polyphosphoric acid-melamine-piperazine composite salt halogen-free flame retardant is obtained. The halogen-free flame retardant with the composite salt structure has the advantages that the halogen-free flame retardant is good in heat stability, high in phosphorus content and free of impurities such as halogens and inorganic salts, and the index of whiteness is larger than 90; few synthesizing process steps are needed, operation is simple and easy to carry out, the requirement on equipment is low, and the product yield reaches up to 80% or above; the flame-retardant polyolefin composition containing the halogen-free flame retardant has the good flame-retardant property, high water-resistant and heat-resistant properties and the excellent pigmenting property.

The composition of nano-grade lanthanum titanium compound oxide is La2-4Ti2-9O7-24, in which La:Ti:O (atom ratio)=2-4:2-9:7-24, LawTi2O7 and La4Ti9O24 are existed in micro-crystal state, its average grain size is 28nm-35nm, and its specific surface area is greater than 60 sq.m/g. Said compound oxide can be used as catalyst for preparing lactide by utilizing lactic acid dehydration and polycondensation, can improve viscosity of reaction system and can effectively reduce lactic acid oligomer cracking temp., and the yield of lactide is 80%-90%.

The invention belongs to the field of sludge treatment and particularly relates to a sludge solidifier and a preparation method of the solidifier. The sludge solidifier mainly comprises magnesia, modified kieselguhr, wood ceramic, poly-ferric sulfate, tea saponin, vanillin and sodium silicate. The prepared sludge solidifier has the advantages that the sludge solidifier is simple to operate, has good dehydration, and microorganism and heavy metal removal effects, improves the quality of sludge filtrate, and reduces environmental pollution; the sludge solidifier is low in cost and environment-friendly, and is convenient for large-scale popularization and application.

The invention discloses formamide and isonitrile compounds serving as influenza A virus inhibitors and preparation and application thereof. The structural formulae of the formamide-isonitrile compounds serving as the influenza A virus inhibitors are shown as a formula I and a formula II described in the specification, wherein R is selected from alkyl, naphthenic group, aromatic group, heteroaromatics group, amino acid group and substitutive derivatives of all the groups; the substituent groups of the substitutive derivatives are alkyl, naphthenic group, aromatic group, heteroaromatics group and amino acid group. The formamide and isonitrile compounds are prepared from amine serving as a raw material by means of acylation, dehydration and the like. These formamide and isonitrile compounds and pharmaceutically-acceptable salts thereof can be used for preparing anti-influenza medicaments of which the activities are much higher than that of an existing anti-influenza medicament, namely, amantadine, and the drug tolerance generated by existing compounds can be overcome.

The invention provides a water dividing oil purifier for lubricating oil used by a ship, which has a damping effect. The water dividing oil purifier comprises a rack and an oil liquid tank to be filtered, the rack is provided with an oil pump for extracting oil liquid to be filtered in the oil liquid tank to be filtered, a heater and an oil suction filter are arranged between the oil pump and the oil liquid tank to be filtered, the oil pump is communicated with a coalescing separator through a demulsifying filter, the coalescing separator is further communicated with a water collecting tank and a pre-filter, the pre-filter is communicated with a fine filter, the water collecting tank is communicated with a sewage bin through a solenoid valve, the water collecting tank is further internally provided with an oil-water interface instrument, the fine filter is communicated with the heater, and an oil liquid pollution degree detector is further communicated with an oil liquid collecting box. The water dividing oil purifier is integrated with filtration and dehydration, can operate continuously, is high in purification and dehydration efficiency, does not change the physiochemical property of the oil liquid, prolongs the service life of the oil liquid, saves a large quantity of machine halt maintenance time, provides guarantee for the continuous operation of the ship, guarantees that the equipment does not stop, can be used for carrying out online monitoring to oil liquid cleaness and feeds back to a control system timely.

The invention discloses a processing method of high-oryzanol rice bran oil. The rice bran oil is prepared from the processes of impurity removal, cleaning, drying, milling, puffing treatment, leaching, hydration degumming, vacuum dehydration, freezing dewaxing, decolorization and deacidification; water vapor needed for rice bran expansion treatment is supply by vacuum dewatering, so that the water vapor can be recycled, the energy loss is reduced, and the active ingredient (oryzanol) in rice bran is somewhat protected; the cost is reduced, the loss of energy is reduced by using physical deacidification, the effect of deacidification is improved, microwave-assisted leaching is used, the extraction speed of the rice bran is accelerated, and the oil yield of the rice bran is improved, and the production efficiency is improved. According to the processing method of high-oryzanol rice bran oil, the color and pH of the rice bran oil can be effectively guaranteed, the energy loss is reduced, the cost is reduced, the oil yield of the rice bran is increased, the quality of the rice bran oil is improved, and the production efficiency is improved.

The invention discloses a method for making an inorganic polymer water purifying agent. The raw materials include pyrite slag, diatomaceous earth, sulfuric acid, hydrochloric acid, oxidizing agent and catalyst. The invention realizes the effective utilization of pyrite slag , turn waste into wealth, solve the problem that pyrite slag is difficult to deal with, and when the water purifying agent is used for water purification, the alum flowers formed during the coagulation process are large, the sedimentation is fast, the sludge dewatering performance is good, and there is no secondary Pollution, has a good purification effect.

The invention provides a pyrolytic process method for directly drying pulverized coal through semicoke. The pyrolytic process method includes the steps that 1, to-be-pyrolyzed pulverized coal is fed into a rotary screen for screening, fine pulverized coal is fed into an airheater, and residual pulverized coal is fed into a semicoke-pulverized coal heat exchanger for drying and dehydration; 2, high-temperature hot smoke generated when the fine pulverized coal is burnt in the airheater is sequentially cooled through a pyrolysis kiln and a drying preheater and discharged, a part of the smoke is returned to the airheater to serve as return air, a part of the smoke is used as moisture carrying gas, and residual smoke is discharged outwards; 3, the pulverized coal dehydrated through the semicoke-pulverized coal heat exchanger enters the draying preheater for further drying; 4, the further-dehydrated pulverized coal enters the pyrolysis kiln for pyrolysis; 5, pyrolysis smoke generated in the pyrolysis kiln sequentially passes through a settling chamber and a filter and is transferred into following processes for treatment, the hot smoke discharged from the pyrolysis kiln enters the drying preheater and is cooled and discharged, and hot semicoke discharged from the pyrolysis kiln is cooled through the semicoke-pulverized coal heat exchanger and transported to a semicoke storage yard. The to-be-pyrolyzed pulverized coal is dried directly through waste heat of the semicoke, and the use efficiency of heat energy is high.

The invention provides a salting-out-rectification coupling-method dehydration method and device. The method comprises the following steps: S1, conveying a material to be treated into a rectification tower; under a heating condition, enabling azeotrope steam to sequentially pass through first-section filling, second-section filling and third-section filling; S2, after condensing the steam treated by the rectification tower, conveying the steam into a liquid-separation high-level tank and layering to obtain an upper-layer organic phase and a lower-layer saline water phase, which are separated from each other; S3, conveying the obtained organic phase into the rectification tower and circularly treating; concentrating an obtained water-phase layer through an evaporator and concentrating; conveying a concentrated solution into the liquid-separation high-level tank and cyclically utilizing; heating the rectification tower by utilizing water steam generated by concentrating. According to the salting-out-rectification coupling-method dehydration method and device, the rectification tower provided with the first-section filling, the second-section filling and the third-section filling is arranged, and separation of an acetonitrile-water azeotrope and a water phase in a tert-butyl alcohol-water azeotrope is realized; after the azeotrope is separated, an azeotropic point is broken to prepare anhydrous acetonitrile and anhydrous tert-butyl alcohol.

The invention discloses a device for rapid dehydration and fixing of a biological molecule detection sample and a use method thereof. Main parts of the device are as follows: a cylindrical bottle body with a diameter of 25-60 mm and a height of 35-75 mm and a round wire mouth bottle cap, a sample storage container is arranged in the bottle body or the bottle cap, a filter paper, cavernous body and biological molecule protectant is put in the sample storage container, an additive bag containing a desiccant, porous sponge foam and a deoxidizer is placed at the bottom of the bottle body, an isolation device is arranged between the additive bag and the sample storage container for preventing the additives from polluting the sample, and the isolation device is provided with multiple air holes convenient for the additive bag to play effects of drying, deoxidization, and the like. The device can fast dry the biological sample and preserve the biological sample for a long term, and has very broad application prospects.

The invention discloses a novel formaldehyde sensor comprising a casing. An electrode carrier, a working electrode and a counter electrode are fixedly connected to the inner side wall of the casing. Aworking electrode lead and a counter electrode lead are connected to the working electrode and the counter electrode respectively; and one end of each of the working electrode lead and the counter electrode lead passes through the casing and extends to the outside. Therefore, the outer dimension of the casing is reduced; and a phenomenon of the sensor abnormity caused by the internal resistance increasing due to dehydration of the perfluorinated proton exchange membrane is avoided.

The invention relates to solid-liquid separation, in particular to a flue gas catalytic desulfurization solid-liquid separation system. The system comprises a device bracket, a dehydration bracket, atransmission bracket II, a power mechanism, a differential mechanism, a transmission mechanism, a dehydration inner barrel, a dehydration outer barrel, a pushing mechanism, a damping mechanism and a pressurizing mechanism, wherein the dehydration inner barrel and the damping mechanism can be simultaneously driven to rotate through the differential mechanism; wastewater after flue gas catalytic desulfurization is placed into the dehydration inner barrel; the dehydration inner barrel rotates to separate solid from liquid in the wastewater through a centrifugal force; when the liquid in the dehydration inner barrel is gradually separated, the gravity of the dehydration inner barrel is gradually weakened, the liquid in the dehydration outer barrel is gradually increased, so that the damping generated by the damping mechanism is gradually increased, the differential mechanism further pushes the dehydration inner barrel to rotate, and the dehydration speed is automatically adjusted accordingto the dehydration degree.

A processes for effecting the cationic polymerization of olefins in a controlled manner that includes the step of contacting olefin monomers and a catalytically effective amount of an initiating composition containing (A) a recyclable aluminum, gallium, or indium perfluorinated organosulfonate, (B) a solubilizing agent, (C) an initiator selected from the group consisting of (i) carbocation synthons, (ii) halogenium ion synthons, (iii) Brønsted acids, and (iv) silicenium ion synthons, and optionally (D) a nucleophilic additive. The invention further includes a process for recycling aluminum, gallium, or indium perfluorinated organosulfonates that includes the steps of aqueous extraction and dehydration. A novel initiator system is also disclosed.

The invention relates to the technical field of starch processing, in particular to a dehydration device for pea starch production, which comprises a double-layer support frame, an extrusion dehydration assembly and a grinding assembly, the extrusion dehydration assembly comprises a strip-shaped shell and a conical inner core, one end of the strip-shaped shell is provided with a feed port, the other end of the strip-shaped shell is provided with a discharge port, and a circle of spiral blades are formed on the conical inner core; a water filtering mechanism is arranged below the strip-shaped shell, the water filtering mechanism comprises a drainage pipeline, the drainage pipeline is communicated with the strip-shaped shell, a net plate is arranged at the joint of the drainage pipeline and the strip-shaped shell, the grinding and scattering assembly comprises a bearing disc, a scraping plate and a driving mechanism, and a discharging opening is formed in the end, away from the discharging opening, of the bearing disc. According to the device, dehydration is carried out while starch is conveyed, the dehydration efficiency is improved, the grinding and scattering assembly of the device can grind and scatter the dehydrated blocky starch, and the dehydrated starch is in a natural scattering state.

The invention discloses a non-fermented composite organic grease fertilizer which comprises 70-80 parts of animal wastes, 8-10 parts of a grease material, 1-3 parts of ground phosphate rock, 1-3 partsof dolomite and 1-3 parts of mica powder. The preparation method of the non-fermented composite organic grease fertilizer comprises the following steps: 1) uniformly mixing the animal wastes with thegrease material, and performing dehydration till the water content of the animal wastes is up to 20-30%; and 2) performing vapor sterilization, namely performing vapor sterilization in a vapor sterilization room so as to kill all insect eggs, weed seeds and harmful pathogenic bacteria. Due to adoption of the animal waste in the organic fertilizer disclosed by the invention, microorganisms in soilcan be massively multiplied, particularly most beneficial microorganisms, in addition, the grease material in the organic fertilizer can be gradually digested and slowly released in the soil and is long in fertilizer effect lasting, a great number of nucleic acid, amino acids, humic acid and carbohydrate can be generated and multiple active bacterium microorganisms can be propagated in the soil,solid calcium phosphate decomposition substances which are bonded in the soil for years can be decomposed, reused and absorbed by crops, and the fertilizer is simple in preparation process and low incost.

The invention relates to the technical field of oil-water pretreatment equipment, in particular to waste mineral oil dehydration and impurity removal equipment based on pretreatment. The equipment comprises a filter body, the filter body at least comprises a top filtering device, wherein the top filtering device comprises a top filtering box, a top filtering mechanism is arranged in the top filtering box, and the top filtering mechanism comprises a top filtering cam, a cam rotating rod, a sliding rail wheel, a movable block, a movable filtering layer and a guide spring; a middle mixing device, whrein the middle mixing device comprises a middle mixing box, a middle mixing shaft, a mixing piece and a middle mixing motor; and a bottom filtering device which comprises a bottom filtering mechanism, wherein the bottom filtering mechanism comprises a bottom filtering driving wheel, a bottom filtering driving shaft, a bottom filtering rack, a bottom filtering layer and a rotating disc. According to the invention, the impurities in the waste mineral oil are deeply filtered out through filtering twice and mixing once in the middle, so that the next-step treatment of oil-water separation can be conveniently carried out.