16results about How to "Restore activity" patented technology

The present application belongs to the field of catalyst regeneration technology, and discloses a regeneration method of a supported bimetallic alloy catalyst in alkane dehydrogenation. After the supported bimetallic alloy catalyst is calcined by oxygen, the auxiliary metal oxide is physically blended with the supported bimetallic alloy catalyst, and then the reduction treatment is carried out under high temperature using hydrogen atmosphere, so as to restore the activity of the supported bimetallic alloy catalyst. The present application can solve the problems of metal loss and bimetallic alloy structure damage of the bimetallic catalyst in the long-time high-temperature reaction environment and the regeneration process. By adding the oxide of the auxiliary metal, the auxiliary metal atoms are reduced and diffused onto the metal alloy under high-temperature conditions, so as to restore the structure and activity of the bimetallic alloy in the catalyst. The method is simple and convenient to operate, and is suitable for the supported bimetallic alloy prepared by different methods.

This invention discloses a method for preparing and analyzing trans-4-aminocyclohexylacetic acid. The preparation method is as follows: 4-nitrophenylacetic acid undergoes catalytic hydrogenation in a solvent, followed by filtration. The filtrate is then treated with acid to obtain a 4-aminophenylacetic acid salt solution. The collected catalyst is activated. The 4-aminophenylacetic acid salt solution is mixed with isopropanol, barium hydroxide, tetrabutylammonium bromide, 18-crown ether-6, and dibutyl phthalate. The activated catalyst is then added to initiate a catalytic hydrogenation reaction. After the reaction, the reaction solution is cooled and filtered. The resulting solid is mixed with a preheated dilute sulfuric acid solution and stirred to form a slurry. The mixture is then filtered, and the filtrate is neutralized and filtered again. The collected filtrate is concentrated and crystallized. The crystallized precipitate is washed and dried to obtain trans-4-aminocyclohexylacetic acid. The method provided by this invention has high reaction efficiency, mild conditions, and is suitable for industrial production. It yields high product purity and reliability. Furthermore, the analytical method provided by this invention is accurate and reliable.

The present application relates to the technical field of feed processing, and particularly relates to a preparation method of Maotai-flavor distiller's grains fermented feed, which comprises the following steps: drying treatment based on the moisture content of Maotai-flavor distiller's grains to obtain basic distiller's grains; determining the strain ratio of brewer's yeast, bacillus subtilis and aspergillus niger based on the tannin content of the basic distiller's grains to obtain a compound fermentation inoculant; inoculating and then fermenting; determining state evaluation parameters based on the total polyphenol accumulation rate, the dissolved oxygen consumption rate and the microbial activity index during the fermentation process, and performing qualified evaluation, and dynamically adjusting when unqualified; determining the fermentation end point based on the tannin degradation rate and the total polyphenol accumulation rate; and mixing the fermented distiller's grains with the basic feed at a mass ratio of 1% after low-temperature drying of the fermented distiller's grains. The present application realizes three-layer control of raw material evaluation, process control and end point determination, significantly improves the stability and content of functional active ingredients in the product, reduces the tannin and safety risk, and has a good intestinal health improvement effect on animals.

This invention belongs to the field of microbial fermentation and functional food technology, specifically relating to a postbiotic composition derived from *Lactobacillus helveticus* CICC6024, its preparation method, and its applications. The postbiotic composition of this invention achieves multi-target synergistic regulation of blood glucose through three pathways: inhibiting α-amylase and α-glucosidase, significantly improving glucose consumption in insulin-resistant cells, and restoring the activity of key enzymes in glucose metabolism. Using LC-MS / MS peptidomics technology, the components of the postbiotic were systematically analyzed, and 27 fermentation-specific differentially produced peptides were identified, providing a clear material basis for its efficacy and achieving a leap from a "black box" to a "clear map."

This invention discloses a fluidized bed hydrotreating catalyst, its preparation method, and its application. The hydrotreating catalyst includes a hydrotreating active metal component, a support, and optional auxiliary phosphorus. The support is a carbon-containing alumina composite support. The preparation method includes the following steps: (1) spheroidizing a first pseudoboehmite powder to obtain a first support precursor; (2) treating an aqueous solution of the first support precursor, an additive, and an organic polymer B to obtain a second support precursor; (3) treating the second support precursor, the second pseudoboehmite powder, and an acidic solution to obtain a third support precursor; (4) subjecting the third support precursor to low-temperature heat treatment to obtain a fourth support precursor; (5) mixing the fourth support precursor with an auxiliary solution, drying, and calcining to obtain an auxiliary-modified carbon-containing alumina composite support; (6) introducing a hydrotreating active metal component onto the composite support, followed by drying and calcining to obtain the fluidized bed hydrotreating catalyst.

The utility model provides an ion adsorption device. The ion adsorption device comprises an adsorption box; the preheating box is mounted at the top of the adsorption box; the liquid storage tank is mounted at the top of the preheating tank and is used for storing eluent; the liquid inlet pipe is mounted on the adsorption box; the multi-way pipe is mounted at one end of the liquid inlet pipe; the liquid injection pipe is mounted on the preheating box; the rectangular insertion openings are formed in the two sides of the adsorption box respectively; the plurality of resin ion adsorption mechanisms are respectively mounted on the plurality of rectangular sockets and are used for adsorbing ions in the wastewater; and the positioning mechanism is arranged on the adsorption box and is used for positioning the plurality of resin ion adsorption mechanisms. The ion adsorption device provided by the utility model has the advantages that the resin bed can be conveniently assembled, disassembled and separated, the resin bed can be conveniently replaced, and the adsorption effect is better.

The application provides a method for in-situ regeneration of Tl-poisoned SCR catalyst and recovery of Tl resources, and belongs to the field of waste SCR catalyst recovery; the Tl-poisoned SCR catalyst is placed in a glycine solution, and after solid-liquid separation, a thallium leaching solution and a regenerated SCR catalyst are obtained; then, the thallium leaching solution is subjected to thallium precipitation treatment, and after solid-liquid separation, a thallium-containing precipitate is obtained. The application utilizes the specific coordination of glycine and Tl to selectively extract Tl from the catalyst, restores the activity of the SCR catalyst, recovers the extracted Tl, realizes the resource utilization of waste, and reduces the environmental risk.

This invention provides a bisphenol A anion regeneration system, comprising an anion bed. The inlet pipes of the anion bed are connected to a demineralized water inlet pipe, a phenol inlet pipe, and a caustic soda inlet pipe. The anion bed is equipped with a top vent pipe and a bottom vent pipe, and a reverse flow pipe connects the inlet pipe and the bottom vent pipe. The upper inlet of the bottom vent pipe is higher than the upper surface of the anion bed. The advantages of this invention are: it extends the service life of the expensive anion catalyst, and through cyclic regeneration, avoids the huge cost of frequent catalyst replacement. The phenol solution used in the regeneration process can be recycled, and the waste alkali solution can be centrally treated or partially recovered, further reducing material consumption and waste disposal costs. Furthermore, during the regeneration operation, the material is introduced into the crystallization system through valve switching, avoiding shutdown of the entire production system, ensuring production continuity, and improving equipment utilization and overall economic efficiency.

This invention relates to the field of medical device technology, and discloses a 3D-printed humeral prosthesis that preserves the shoulder joint. The prosthesis includes a prosthesis body, with a proximal end for connecting to the humeral head of the patient's own shoulder joint. The proximal end of the prosthesis body is ball-shaped, and a connection area is provided at the top of the proximal end, with multiple nail-like protrusions. The proximal end of the prosthesis body also has through-holes perpendicular to the connection area. The ball-shaped proximal end of the prosthesis body of this invention, with its connection area, connects to the humeral head of the patient's own shoulder joint, preserving the patient's own shoulder joint, maintaining the patient's natural range of motion and function, reducing damage to surrounding tissues, facilitating more natural movement and recovery of daily activities, and improving postoperative function. The ball-shaped connection has a large contact area, and the nail-like protrusion structure in the connection area of ​​the proximal end of the prosthesis body further increases the contact area, making the connection more stable; this contributes to the initial and long-term stability of the prosthesis implantation.

The invention relates to the modulation of pyruvate kinase and to novel chemical compounds of formula (i) useful as PKR activators, as well as various uses of these compounds. The PKR-activating compounds of the invention are useful in the treatment of diseases and disorders associated with PKR and / or PKM2, such as pyruvate kinase deficiency (PKD), sickle cell disease (SCD), and thalassemia.

This application discloses a method for catalytic wet oxidation treatment of sodium thiosulfate. The method includes: contacting a raw material containing sodium thiosulfate with a catalyst and an oxidant to undergo an oxidation reaction to obtain sodium sulfate; wherein the catalyst includes a support and an active component; the support is activated carbon; the active component includes a transition metal active element; the transition metal active element is selected from one to three of Mn, Fe, Co, Ni, and Cu. This method can achieve oxidation of more than 60% of 10000 mg / L thiosulfate, and the catalyst activity can be restored by water washing and regeneration after a decrease. The catalyst morphology remains good after 30 days of continuous operation.

The invention discloses a thermal oxidation resistant boron-nitrogen co-doped carbon catalyst as well as a preparation method, a regeneration method and application of a self-template of the thermal oxidation resistant boron-nitrogen co-doped carbon catalyst. The catalyst is prepared by taking traditional Chinese medicine licorice root residues as a self-template carbon skeleton precursor, mixing the self-template carbon skeleton precursor with urea and boric acid according to a mass ratio of 1: 1: 1, and performing one-step pyrolysis in an air atmosphere. According to the preparation method, licorice root residue endogenous minerals are used as a template, and a boron-nitrogen atom covalently anchored stable carbon skeleton is successfully constructed under the fluxing and lattice stabilization effects of boric acid, so that the carbon skeleton can tolerate aerobic calcination at the high temperature of 700 DEG C. The catalyst can be used for efficiently activating peroxymonosulfate, and can be used for quickly degrading and deeply mineralizing a plurality of organic pollutants such as sulfonamides, tetracyclines and phenols in a wide range of pH (Potential of Hydrogen) 111. The method realizes treatment of wastes with wastes, overcomes the technical bottleneck that the carbon-based catalyst is difficult to thermally regenerate at high temperature, has the characteristics of high activity, long service life and low cost, and has a wide application prospect in the field of advanced treatment of organic pollutants in water.

The application discloses a blockchain sharding method combining a node contribution mechanism and a two-round consensus, and comprises the following steps: completing blockchain node initialization and random sharding by using a verifiable random function based on an elliptic curve algorithm; constructing a multi-dimensional dynamic contribution value model based on discretization calculation, comprehensively considering the voting consistency of nodes in the current round, the historical contribution average value and the identity additional score, so as to select a leader node; executing a two-round consensus protocol; and triggering a dynamic replacement mechanism for a malicious leader node or a malicious shard by comparing the consistency of a pre-commitment and the number of valid signatures of a block header.

The utility model provides a regeneration system for hydrogen peroxide fixed bed catalyst air, which is characterized in that a first main pipeline is used for introducing air, nitrogen, steam and desalted water into an upper tower of a hydrogenation tower, and a second main pipeline is used for introducing a working solution and aromatic hydrocarbon; the cooler is used for cooling the steam condensate; the hydrogenation tower regeneration steam condensate pipeline is used for communicating an inlet of the cooler with the hydrogenation tower upper tower, the hydrogenation tower middle tower and the hydrogenation tower lower tower respectively; the separator is used for separating tail gas in the condensate from the condensate or aromatic hydrocarbon; and the aromatic hydrocarbon reflux pipeline is used for introducing the aromatic hydrocarbon separated by the separator into the aromatic hydrocarbon pipeline for cyclic utilization. Organic impurities adsorbed by a catalyst in a hydrogenation tower are fully dissolved and washed away by using an aromatic hydrocarbon solvent, air is added to oxidize the catalyst for regeneration, and part of reducing substances adsorbed by the catalyst are oxidized and dissolved by the aromatic hydrocarbon solvent, so that the catalyst is deeply regenerated, a better catalyst regeneration effect is achieved, and the service life of the catalyst is prolonged. The product energy consumption is reduced.

This invention discloses a combined acupuncture and medication method for treating cervicogenic vertigo, belonging to the field of traditional Chinese medicine clinical treatment technology. The method comprises two parts: oral administration of a specific herbal composition and standardized acupuncture knife therapy. The herbal composition consists of Pinellia ternata, Gastrodia elata, Uncaria rhynchophylla, Poria cocos, Citrus reticulata peel, stir-fried Atractylodes macrocephala, Zingiber officinale, Haliotis diversicolor, Pueraria lobata, Cinnamomum cassia, Corydalis yanhusuo, Ziziphus jujuba, Lycopodium clavatum, Spatholobus suberectus, Pheretima aspergillum, Chaenomeles speciosa, and Paeonia lactiflora in specific dosages, which are then sterilized, preserved, dried, pulverized, and sieved to form capsules for oral administration. The acupuncture knife therapy targets Baihui (GV20), the midpoint of the neck, the left point of the neck, the right point of the neck, and the articular process points. This invention has the effects of resolving phlegm and relieving wind, strengthening the spleen and removing dampness, calming liver yang, relieving exterior cold, and relaxing tendons and vessels, far exceeding the effects of Western medicine treatment alone. It is most effective for the phlegm-dampness obstruction type. It has the advantages of being safe with no side effects, treating both the symptoms and the root cause, having a low recurrence rate, a high degree of standardization, and a wide range of applications. It improves the pathological state of cervicogenic vertigo from the root, embodying the concept of preventive medicine in traditional Chinese medicine, and has significant clinical application value.

The utility model discloses a continuous circulating acid preparation device for a stainless steel pickling process, and belongs to the technical field of metal surface treatment. According to the technical scheme, the continuous circulation acid preparation device for the stainless steel acid pickling process comprises an acid pickling tank, a plurality of acid pickling bins are arranged in the acid pickling tank at intervals, a circulating pump is arranged at the bottom of each acid pickling bin, and the input end and the output end of each circulating pump are connected with the acid pickling bins through guide pipes. A filtering assembly is arranged on an input end guide pipe of the circulating pump; according to the utility model, through the synergistic effect of the circulating pump in the pickling bin and the sliding acid preparation unit and the combination of the real-time PH detection and control unit, the dynamic balance adjustment of the acid liquor concentration is realized, and meanwhile, the high-efficiency filtration of the ceramic honeycomb filter element and the waste acid distillation recovery process are adopted; the problems of uneven acid liquor concentration, impurity deposition and low waste acid treatment efficiency in the traditional process are effectively solved, and the comprehensive advantages of improving the acid pickling quality, reducing the maintenance cost and reducing the environmental pollution are achieved.