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

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 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.

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 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 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.