36results about How to "Reduced mass transfer limitations" patented technology

A system for treating feedwater to remove contaminants therefrom, the system comprising at least one high shear mixing device comprising at least one generator comprising a rotor and a stator separated by a shear gap, wherein the shear gap is the minimum distance between the rotor and the stator, and wherein the high shear mixing device is capable of producing a tip speed of the rotor of greater than 22.9 m / s (4,500 ft / min) and a pump configured for delivering feedwater and treatment gas selected from oxygen, air, and chlorine to the high shear mixing device.

The invention belongs to the technical field of fermentation and discloses a preparation, separation and impurity-removal purification method of L-malic acid. The methods comprise the following steps of: 1) fermentation; 2) transparent treatment; 3), separation and impurity removal; and 4) purification. The output of the malic acid prepared by the method is high, and the product yield and purity are high after impurity-removal purification.

A method of use for a high shear device incorporated into a process or system for the production of acetaldehyde from ethylene as a reactor device is shown to be capable of decreasing mass transfer limitations, by forming a feed stream emulsion, and thereby enhancing the acetaldehyde production process in the system.

A system and method for a high shear mechanical device incorporated into a process for the production of acetic anhydride as a reactor device is shown to be capable of decreasing mass transfer limitations, thereby enhancing the process. A system for the production of acetic anhydride including the mixing of catalyst and acetic acid via a high shear device.

The invention relates to a carrier-type TIO2 photo-catalyst, it's preparing method, and a high-absorbability photo-catalysis water purifier made from said material. Said carrier-type TIO2 photo-catalyst uses active carbon fiber base as substrate, which carries 100-600mgTIO2 / g active carbon fiber to form the TIO2 film in 100-300nm thick and the specific surface area in 150-400m2 / g. Said catalyst can be attained by powder plating method, liquid deposition method and sol-gel method of adhesive agent. The invention can keep the former space between active carbon fibers with the advantages that the liquid can freely enter the inner part of photo-catalyst and the ultraviolet light can radiate the inner part of photo-catalyst. The photo-catalysis water purifier with aforementioned carrier-type TIO2 photo-catalyst is in the shape of rectangle, while several photo-catalyst elements with said catalyst are inserted into the slot of purifier, the aeration system on the bottom can mix the treating liquid with air to reduce the mass transfer limit. Said purifier can effectively absorb the action bottom material; and improve the photo-catalysis process to apply the deeply-purification treatment of micro-pollution water.

A method for introducing inhibitor into a fluid to be treated by forming a dispersion comprising droplets, particles, or gas bubbles of the inhibitor dispersed in a continuous phase of a carrier, wherein the droplets, particles, or gas bubbles have a mean diameter of less than 5 μm, and wherein either the carrier is the fluid to be treated or the method further comprises introducing the dispersion into the fluid to be treated. A system for inhibiting an undesirable component, the system comprising at least one high shear mixing device comprising at least one generator comprising a rotor and a stator separated by a shear gap, wherein the high shear mixing device is capable of producing a tip speed of the rotor of greater than 22.9 m / s, and a pump for delivering a mixture of a carrier and an inhibitor to the high shear mixing device.

The invention belongs to the technical field of microbial fermentation, and discloses a technology for producing a malic acid employing fermentation of aspergillus oryzae. The technology comprises the following steps of preparing an aspergillus oryzae seed solution, preparing the malic acid through fermentation, adding calcium carbonate and CTAB in the fermentation process, and adjusting the pressure intensity and the temperature. Through on permeability treatment on a bacterial strain, the technology is simple, the cost is low and the yield of the malic acid is improved.

Use of a high shear mechanical device incorporated into a process for the production of chloral as a reactor device is capable of decreasing mass transfer limitations, thereby enhancing the chloral production process. A system for the production of chloral from acetaldehyde and chlorine, the system comprising a reactor and an external high shear device the outlet of which is fluidly connected to the inlet of the reactor; the high shear device capable of providing a dispersion of chlorine gas bubbles within a liquid, the bubbles having an average bubble diameter of less than about 100 μm.

The invention discloses a photocatalyst immobilization method on a flexible fiber substrate, which belongs to photocatalysis technology. Add a solvent to the photocatalyst and silica binder to configure a catalyst suspension; coat the catalyst suspension on a flexible fiber substrate and dry to obtain a loaded photocatalyst precursor; the loaded photocatalyst precursor Soak in alkaline solution and dry to get the target product loaded photocatalyst, the loading capacity of photocatalyst is 0.2~1.6mg / cm 2 . Compared with other loading methods, this method does not require high-temperature treatment, uses silica binder and flexible fiber substrate, and can stably load the photocatalyst on the carrier only by drying, with good bonding effect, easy operation, and equipment Low requirements, low cost, large-scale preparation of supported photocatalysts; high photocatalytic activity, better reusability in alkaline reaction liquids; flexible carrier materials selected, easy for other treatments, stable performance, applicable to all areas wide.

The invention belongs to the technical field of amino acid preparation and discloses a fermentation technology for refinement of glutamic acid. The technology comprises the steps as follows: step 1) preparation of a seed solution; step 2) preparation of a fermentation solution; step 3) separation; step 4) concentration and crystallization. With the adoption of the technology, the fermentation acid production efficiency is improved, and the purity and yield of a product obtained with the separation and purification technology are high.

The invention belongs to the technical field of biological fermentation and discloses a method for preparing, extracting and purifying threonine, which comprises the following steps: 1) fermentation, 2) centrifugation, 3) microfiltration and ultrafiltration, 4) concentration, isoelectric and crystallization. The process of the invention is simple and feasible, the threonine fermentation efficiency, yield and purity are high, and the application prospect is broad.

Use of a high shear mechanical device in a process for production of acetyl salicylic acid, by contacting acetic anhydride with salicylic acid in a high shear device. The disclosed process makes possible a decrease in mass transfer limitations, thereby enhancing production of acetyl salicylic acid. A system for production of acetyl salicylic acid is also provided in which a reactor is configured to receive the output from a high shear device, which is configured to receive, via one or more inlets, acetic anhydride, and salicylic acid and generate a fine dispersion or emulsion of reactants.

The invention belongs to the technical field of harmless treatment of chromium slag and arsenic-containing wastewater, and more specifically relates to a method for co-processing chromium slag and acidic arsenic-containing wastewater. A method for co-processing chromium slag and acidic arsenic-containing wastewater provided by the present invention fully utilizes the inherent characteristics and complementarity of chromium slag and acidic arsenic-containing wastewater to simultaneously realize the neutralization of alkali in chromium slag and the reduction of hexavalent chromium / Stabilize and neutralize acid in acidic arsenic-containing wastewater and remove arsenic, and reduce the treatment cost of chromium slag and acidic arsenic-containing wastewater through the idea of ​​"treating waste with waste". There are a large amount of strong acid substances in the acidic arsenic-containing wastewater used in the present invention, which can effectively convert the mineral occurrence state Cr(VI) in the chromium slag into water-soluble Cr(VI), and reduce the mass transfer limitation in the process of reducing and stabilizing Cr(VI) ; At the same time, there are a large number of mineral components with arsenic adsorption capacity in the chromium slag used at the same time, which can effectively fix the arsenic in the wastewater, and greatly reduce the use of chemicals and treatment costs.

Use of a high shear mechanical device incorporated into a process for the production of cumene hydroperoxide as a mixer / reactor device is capable of decreasing mass transfer limitations, thereby enhancing the cumene hydroperoxide production process. A system for the production of cumene hydroperoxide from oxidation of cumene, the system comprising a reactor and an high shear mixer the outlet of which is fluidly connected to the inlet of the reactor; the high shear mixer capable of providing a dispersion air gas bubbles within a liquid, the bubbles having an average bubble diameter of less than about 100 μm.