6results about How to "Reduce mass transfer rate" patented technology

The invention discloses abalone peptide slurry electrodialysis equipment and a use method thereof, and belongs to the technical field of peptide slurry electrodialysis. Comprising a lifting support, an electrodialysis reaction disc cavity fixedly installed on the upper side of the lifting support, a self-cleaning mechanism, an eddy current effect generation mechanism and a driving mechanism, and first electric telescopic rods attached to the two sides of the eddy current effect generation mechanism can be unfolded outwards through the first electric telescopic rods in the cleaning stage; the U-shaped expansion sleeve plate is used for controlling the extending U-shaped expansion sleeve plate to divide the mixing circular cavity into an upper cleaning space and a lower cleaning space which are not interfered with each other, so that different cleaning reagents are injected according to the ion characteristics of the membrane modules in the cleaning spaces; while synchronous cleaning of the two membrane assemblies is achieved, maintenance time and cost are reduced, mechanical damage caused by repeated disassembly of the membrane assemblies can be reduced, and the performance and the service life of the membrane are improved.

The invention relates to a metal-encapsulated hydroisomerization catalyst, a preparation method thereof and application of the metal-encapsulated hydroisomerization catalyst in preparation of biological aviation kerosene from cyperus esculentus oil, metal species are encapsulated into a framework of a molecular sieve SAPO-11 through an in-situ encapsulation method, and the hydroisomerization catalyst with proper isomerization performance and cracking performance is prepared; the catalyst has relatively high thermal stability, and can have relatively high yield and isomerization ratio when being applied to a reaction for preparing biological aviation kerosene by hydroisomerization and hydrocracking of a hydrodeoxygenation product of vegetable oil.

The invention discloses an on-line blending-free variable-viscosity high-resistance-reduction retarded acid, and according to an on-line blending-free variable-viscosity high-resistance-reduction retarded acid system provided by the invention, the performance of an acid solution can be changed by changing the dosage of a medicament, and the preparation in advance is not needed. The film coating agent can form an adsorption film on the surface of the rock, and the existence of the adsorption film blocks the contact between H < + > and the rock, so that the acid-rock reaction rate is slowed down. In addition, the retarding agent also has multiple composite retarding performance, the characteristics of foam retarding acid and gelling retarding acid are combined, and the rate of acid-rock reaction is greatly reduced under the double retarding action of tackifying retarding of the multi-effect agent and blocking retarding of the film coating agent. In addition to a good tackifying effect, the tackifying agent also has excellent resistance reducing performance and is multipurpose, and the dosage and types of additives are reduced. Meanwhile, the resistance reduction rate of the system reaches 85% or above and is far better than 70% of that of a traditional system.

The application discloses an online mixing-free variable-viscosity high-resistance-slowing acid, and provides an online mixing-free variable-viscosity high-resistance-slowing acid system, wherein the performance of acid liquid can be changed by changing the adding amount of the agent, and the acid liquid does not need to be prepared in advance. The film-forming agent can form an adsorption film on the surface of rock, and the adsorption film blocks the contact between H+ and rock, thereby slowing the acid-rock reaction rate. The application also has multiple composite slow-down performances, and combines the characteristics of foam slow-down acid and gelling slow-down acid. Through the thickening and slowing down of the multiple-effect agent and the blocking and slowing down of the film-forming agent, the acid-rock reaction rate is greatly reduced under the double slow-down effect of the two. In addition to the good thickening effect, the application also has excellent resistance-reducing performance, and one agent is used for multiple purposes to reduce the adding amount and type of the additive. Meanwhile, the resistance-reducing rate of the system reaches more than 85%, which is much higher than the 70% of the traditional system.

The application provides a triazine three-arm long-chain amide quaternary ammonium salt corrosion inhibitor and a preparation method and application thereof, and relates to the technical field of oil and gas field acidification corrosion prevention.The method comprises the following steps: long-chain fatty acid and N,N-dimethylethylenediamine are mixed according to a molar ratio of 1:1-1.5, a catalyst is added, and a condensation reaction is carried out under a protective atmosphere to obtain a long-chain fatty amide intermediate; the long-chain fatty amide intermediate and cyanuric chloride are mixed according to a molar ratio of 3.0-3.6:1, and a substitution reaction is carried out in an organic solvent; after the reaction, the solvent is removed under reduced pressure, washing, recrystallization or vacuum drying are carried out, and the triazine three-arm long-chain amide quaternary ammonium salt corrosion inhibitor can be obtained.The corrosion inhibitor is a three-arm cationic corrosion inhibitor with a s-triazine ring as a core and three long-chain fatty amide quaternary ammonium salt side arms as functional units, and can solve the problems of slow film formation, insufficient long-acting stability and reduced corrosion efficiency of the existing acidification corrosion inhibitor in the solid organic acid anhydride retarding acid system.

The present invention discloses an abalone peptide slurry electrodialysis device and a method of using the device, and belongs to the technical field of peptide slurry electrodialysis. The device comprises a lifting bracket, an electrodialysis reaction disc cavity fixedly mounted on the upper side of the lifting bracket, a self-cleaning mechanism, an eddy current effect generating mechanism, and a driving mechanism. The first electric telescopic rod attached to both sides of the eddy current effect generating mechanism can be expanded outwards through the first electric telescopic rod during the cleaning stage to control the extended U-shaped expansion sleeve to separate the mixing circular cavity into two non-interfering cleaning spaces, one above and one below, so as to inject different cleaning reagents according to the ionic characteristics of the membrane components in the cleaning space. This is different from the traditional cleaning stage, where there is no need to disassemble the membrane components with different ionic characteristics for cleaning. While achieving simultaneous cleaning of the two membrane components, it can reduce maintenance time and cost, and also reduce mechanical damage caused by repeated disassembly of the membrane components, thereby increasing the performance and life of the membrane.