295results about How to "Short separation time" patented technology

The invention discloses a double-water phase extracting technique of 2, 3-butanediol from ferment liquid in the biological engineering technical domain, which is characterized by the following: adding inorganic salt and hydrophilic organics in the ferment liquid of 2, 3-butanediol to form new double-water phase; extracting to separate 2, 3-butanediol from ferment liquid.

The invention relates to a Chinese magnoliavine fruit monomer composition separation preparation method; ethanol extracts from Chinese magnoliavine fruit are extracted by petroleum ether, chromatography is carried out to the petroleum ether extracts by a silicagel column, and then the petroleum ether is eluted by petroleum ether-ethylacetate, and HPLC is used for monitoring, and then crude extract A and crude extract B are fraction-collected, and eluted; the volume ratio of eluant petroleum ether and ethylacetate is 3-5:1, the crude extract A and crude extract B are respectively applied to a high-speed counter-current chromatography for separation, so as to obtain SCHisanhenol, deoxyschizandrin, schizandrin B, schisandrin C, schizandrol A, schizandrol B and schisantherrin B monomers, and the purity is higher than 98 percent.

A linear trap which allows for charge separation and ion mobility separation in a speedy manner, and enables measurement with high duty cycle. A mass spectrometer comprises an ion source, an ion trap for trapping ions ionized by the ion source, an ion trap controller for controlling a voltage on an electrode included in the ion trap, and a detector for detecting the ions ejected from the ion trap. The ion trap controller includes a table for each mass-to-charge ratio, the table containing a frequency of the voltage used for charge separation, and a gain of the voltage for ejecting a first ion with a first charge outside the ion trap, and retaining in the ion trap a second group of ions with a second charge that is lower than that of the first charge. The ion trap controller controls the voltage based on the mass-to-charge ratio set. The mass spectrometer has significantly improved sensitivity, as compared to the prior art.

The invention discloses a method for producing fatty acid by hydrolyzing lipid through three liquid-phase lipase catalytic systems. The method comprises the following steps: firstly, preparing enzyme solution with the lipase concentration of 5-20000 U/mL, and adding soluble inorganic salts, alcohol/ketonic hydrophilic fraction and lipid to the enzyme solution so as to form three liquid-phase systems; secondly, laying the prepared three liquid-phase systems into an agitated vessel for reaction, standing or centrifuging the systems after the reaction so as to divide the systems into an upper layer, a middle layer and a lower layer, and collecting products in the upper layer so as to obtain fatty acid phase. The method adopts the three liquid-phase systems to extract fatty acid in crude enzyme solution, performs direct hydrolyzing to produce fatty acid, can not only greatly reduce the production cost of enzyme, but also solve the problems of high energy consumption for glycerol and enzyme separation, high cost, high pollution and the like.

The invention discloses a treatment method and a separation recovering system of a waste cutting liquid, belonging to the technical field of chemical equipment. The technical scheme is as follows: the treatment method comprises the steps: heating and pressurizing a waste cutting liquid to be treated and then coarsely filtering to remove solid impurities; performing film filtration and separation on the coarsely filtered waste cutting liquid to obtain a cutting clear liquid and a cutting concentrated liquid; and treating the cutting concentrated liquid as a dangerous waste liquid, making the cutting clear liquid be used for preparing a cutting liquid again or conveying the cutting clear liquid to a sewage treatment system, and discharging after the cutting liquid reaches the standard through biochemical treatment. The treatment method disclosed by the invention is simple and reliable in operation and high in separation efficiency, and capable of effectively realizing separation of the cutting liquid from water. The separation recovering system is simple in structure, easy to operate, convenient to maintain, safe and reliable in operation, and good in treatment effect.

The invention relates to chiral magnetic nano-particles and preparation and application thereof. The preparation comprises the following steps of: (1) preparing Fe3O4 magnetic nano-particles; (2) preparing Fe3O4/SiO2 composite magnetic nano-particles; (3) preparing cellulose-2,3-di(3,5-dimethyl phenyl carbamate); and (4) performing surface chiral modification on the Fe3O4/SiO2 composite magnetic nano-particles by using the cellulose-2,3-di(3,5-dimethyl phenyl carbamate). The chiral magnetic nano-particles are used for separating a racemic compound DL-1-phenethyl alcohol, and an optical rotation value test for obtaining components through singly spinning a guide sample and separation proves that laevo-rotation and dextro-rotation are separated very well. The chiral magnetic nano-particles have the advantages of short separation time, simple and convenient operation, and good separation effect of chiral compounds; besides, the chiral magnetic nano-particles can be thoroughly separated from base solution under an external magnetic field, and not only cannot cause pollution to a target separation object but also can be completely recycled, thereby fulfilling two aims of ecumenical efficiency and environmental protection.

The invention discloses a plasma separating chip, and belongs to the field of micro electro mechanical systems. The chip is provided with a micro spiral fluid channel, and a centre around which the micro fluid channel bypasses is provided with a sample inlet; the inner side at a certain position of the micro fluid channel is connected with another concentric micro spiral fluid channel; a plurality of gradient channels are arranged between the two micro spiral fluid channels; and the two micro spiral fluid channels are connected with two different sample outlets. A mixture of different sizes of cells or particles is injected through the sample inlet of the plasma separating chip by a micro pump or an injection pump; and the cells and plasma in the blood are separated into two different circulation channels by inertial characteristics of the fluid and a pressure difference between the inner and outer channels. The plasma separating chip has a compact structure; the total area of the chip is reduced, and the separating efficiency is improved; and time is short in the separating process of the chip.

The invention discloses a two-step simultaneous preparation method for pedunculoside and syringin and belongs to the technical field of natural product extraction and separation. The method comprises the following steps: adding 20-70% (volume fraction) of ethanol water into ovate leaf holly bark, performing reflux extraction, collecting an extracting solution, standing and filtering the extracting solution, and respectively collecting filtrate and residues; 2 drying the residues to obtain crude pedunculoside, and purifying the pedunculoside to obtain the pedunculoside; 3, performing column chromatography separation to the filtrate with macroreticular resin, taking an ethanol-water system as an eluting agent to conduct gradient elution, concentrating and drying elution components to obtain crude syringin, purifying the crude syringin to obtain the syringin. The method is simple and feasible, has a short separation time and high separating efficiency, the purity of the pedunculoside and the purity of syringin can both reach more than 98%, and the method is suitable for large-scale industrial production.

The mixed aeration type biological treating system features that there are one circular biochemical pond set beside the mixing pond, which has one inside ejector and two overflow grooves in the top including one connected to the mixing pond via an outside circulating pipe; one first stage air floating pond connected to the other overflow groove and to the mixing pond via a sewage reflux pipe; one second stage air floating pond connected to the first stage air floating pond; one blower connected to the circular biochemical pond via ventilating pipeline; and one shallow aeration pipe in the outlet of the ventilating pipeline. The present invention has combined inside-pond circulation and outside-pond circulation, greatly raised impact resistance, and increased chemical-adding coagulating and air floating pond for raised treating capacity.

The invention discloses a method to prepare high-purity capsaicin monomers. The separation solvent system is composed of alkyl halies, alcohol, water, etc. The separation solvent system is arranged in the separating funnel, and is shaken and then kept still for stratification, the upper phase is taken as fixed phase and the lower phase as mobile phase. A proper dosage of sample is weighed and dissolved in the mixed solution of the upper phase and the lower phase. Firstly, the fixed phase is pumped to fill fully a chromatographic separation column at the specified flow rate, and then the head end of the column is connected with a six-way sample-feeding valve. The speed controller is started; when the rotational speed reaches to 800r/min, the sample solution is pumped into the mobile phase at the flow rate of 2.0mL/min; when the mobile phase effuses from the chromatographic column, the sample is loaded, and each separated peak is collected; high-performance liquid chromatography (HPLC) is adopted to measure the purity, and three monomers i.e. dihydrocapsaicin, capsaicin and nordihydro-capsaicin are achieved. The method is applicable to the preparation of such three high-purity capsaicin monomers by the crude extracts of the capsaicin obtained through various approaches. The method is characterized in simple operation, low production cost and free of organic solvent residue; and the method can be promoted for the preparation of high-purity capsaicin monomers.

Disclosed is a separation of amphoteric molecules according to their isoelectric points, wherein a first separation according to the isoelectric points of the molecules in one ore more first strip-like separation media located on a first carrier is carried out. First separation media have a first pl range.

The invention relates to a gas-chromatography filler capable of separating and analyzing hydrogen isotopes and a preparation method of the gas-chromatography filler and belongs to the technical field of functional materials. The material takes gamma-Al2O3 as a carrier. The synthesis method comprises the steps of loading a metal-organic skeleton compound to the surface of the gamma-Al2O3, carrying out washing and drying, and then, dipping the gamma-Al2O3 in an aqueous solution of a transition metal salt MXn, thereby obtaining a loaded type composite material. The gas-chromatography fixed-phase material is applied to the separation of hydrogen isotopes H2/D2, the separation effect is good, the quantitative analysis is accurate, and the material can be repeatedly used and is low in price; due to good mechanical properties, the recovery and reuse are very convenient.

The invention relates to a method for separating and enriching chlorogenic acid in tobacco. According to the method, the chlorogenic acid in tobacco is separated and enriched by utilizing a solvent flotation technology, and a mixed organic solvent is added to serve as an extracting agent, so that the polarity of the extracting agent is changed, and the extraction rate of the chlorogenic acid is improved. The pH value of a tobacco extracting solution is regulated, so that the polarity of the extracting agent is matched with that of the chlorogenic acid, and the separation, enrichment and purification effect is good. The extraction can be performed at room temperature due to the adopted solvent flotation technology, and the operation conditions are mild. According to floatation of an air floatation solvent, an emulsification phenomenon generated due to shaking during common liquid-liquid extraction is avoided, the amount of the used organic solvent is small, and the method is large in enrichment factor, short in phase separation time, low in cost and feasible to operate.

The invention provides a desorption regeneration method of a hydrophobic macroporous polymer adsorbent adsorbed with butanol. The method disclosed herein comprises the steps of using water-soluble low-boiling polar solvent and water to successively elute the hydrophobic macroporous polymer adsorbent adsorbed with butanol. According to the invention, after a solution containing butanol (e.g. butanol fermentation liquor) is adsorbed by the hydrophobic macroporous polymer adsorbent, by using the desorption regeneration method disclosed herein, the full dissolution and desorption of the adsorbed butanol in the adsorbent can be realized; in addition, the regeneration treatment can be directly carried out on the adsorbent on a fixed bed where the butanol fermentation liquor is adsorbed, and the adsorption process of the next stage can be directly conducted without taking out the adsorbent from the fixed bed, thus a lot of time is saved, and the regeneration efficiency is raised. The method disclosed herein has the advantages of simple process, short separation time, easy, rapid and complete desorption and regeneration, low investment of devices, low pollution, and low energy consumption, and is easy for large scale production.

The invention discloses a purification device and a separation method of oily sewage. The device comprises a water inlet allocation device, a column separator, a floating oil collection device, an inflatable cyclone separator, at least one self-sucked type micro-bubble generator and at least one dissolved gas separation micro-bubble generator, wherein the column separator is arranged at the upper part of the column body; the built-in inflatable cyclone separator is arranged at the lower part of the column body; the column separator and the inflatable cyclone separator are communicated vertically; an inflation point of the dissolved gas separation micro-bubble generator is arranged at the upper part of the column body; an inflation point of the self-sucked type micro-bubble generator is arranged at the lower part of the column body. By adopting the two inflation modes that the micro-bubble is generated through negative self-sucked ejection air flow and high-pressure dissolved gas depressurization separation, the hydrocyclone separation and the floating separation are coupled, refined granular oil in the oily sewage can be effectively separated, the low limit of effective flotation granularity is small, the separation time is short, the operation cost is low, and the problem that emulsified oil in the oily sewage is hard to separate is solved.