74results about How to "Achieve in situ regeneration" patented technology

The invention belongs to the technical field of gene engineering and particularly relates to carbonyl reductase AcCR and an encoding gene and application thereof. The amino acid sequence of the carbonyl reductase AcCR is shown as SEQ ID NO.1. The nucleotide sequence of the gene for encoding the carbonyl reductase AcCR is shown as SEQ ID NO.2. The carbonyl reductase AcCR comes from bacillus aceticus XZY003 and can catalyze 13 carbonyl compounds to generate corresponding chiral alcohol of single enantiomers. The carbonyl reductase AcCR and glucose dehydrogenase GDH are co-expressed in a prokaryotic expression system or a eukaryotic expression system, the biological reaction process of biological catalytic conversion is conducted through the carbonyl reductase, in-situ regeneration of coenzyme is achieved, production cost is greatly reduced, the optical purity of an obtained product is high, the reaction process is efficient, and conditions are moderate.

The invention belongs to the biology and biological technical field, and discloses a plant in-situ regeneration and agrobacterium transformation method. Agrobacterium is coated on a wound of a plant root stock, a callus which is generated by inducing a plant in-vitro tissue on a culture medium is used as a scion, and the scion is grafted onto the root stock through a cleft graft method. Root stock wound cells can realize in-situ organ regeneration under the induction of an exogenous callus, so that a transgenic regeneration bud can be obtained. Compared with the traditional plant genetic transformation method combining the tissue culture, a one-by-one genotype fumbling tissue culture condition can be avoided, a novel technological platform can be provided to the genetic transformation of plants, meanwhile, a novel plant regeneration system is established, and a research system is provided to the study of plant development biology.

The invention discloses a continuous catalytic hydrogenation production and catalyst regeneration device, which is used for realizing hydrogenation product continuous production and reaction kettle hydrogenation catalyst in-situ regeneration. The device comprises a fusing section, a reaction kettle hydrogenation section, a catalyst regeneration section and a fixed bed reactor hydrogenation section which are connected through pipelines and are sealed, wherein the reaction kettle hydrogenation section comprises two high-pressure hydrogenation reaction kettles in parallel connection; the catalyst regeneration section and one high-pressure hydrogenation reaction kettle form a catalyst in-situ regeneration system. The device has the advantages that the automatic control on the continuous production of hydrogenation products, and the in-situ regeneration treatment of a reaction kettle hydrogenation catalyst can be realized, so that the use time of the catalyst can be prolonged; the catalyst loss is reduced; the production flow process is shortened; the energy consumption is reduced; the production efficiency is improved; the hydrogenation products with high quality and high yield can be produced. The invention also discloses a continuous catalytic hydrogenation production and catalyst regeneration method.

The invention discloses a bone cement of a bio-based polyurethane composite degradable material, which is composed of a solid phase powder material and a liquid phase composite, wherein the solid phase powder mainly comprises inorganic powder and/or a prepolymerized organic filler insoluble in a polyurethane monomer, doped reinforcing fibers and other functional powders. The liquid phase compositemainly comprises a bio-based polyurethane prepolymer and a liquid phase monomer diluent. The liquid phase composite is slowly added to the solid phase powder material, and the materials are sufficiently mixed and solidified to form the bone cement. The bone cement can completely replace the bone cement such as PMMA, calcium phosphate and calcium sulfate on the market, and has excellent biologicalactivity and the ability to promote new bone formation. After injecting into the human bone defect site, the mechanical properties are excellent, the polymerization reaction produces less heat, and the bone cement degradation rate is matched with the new bone formation inducing speed, and the autologous bone in-situ regeneration is achieved to ensure stable and controllable bone increment.

The invention discloses a biological preparation method of (R)-1-(2-trifluoromethylphenyl)ethanol. The method comprises the following steps: taking a wet thallus obtained by carrying out fermentationculture on geotrichum candidum ZJPH1704 as a biological catalyst and taking 2-trifluoromethylacetophenone as a substrate; carrying out biological reduction reaction in a phosphoric acid buffering solution with the pH (Potential of Hydrogen) of 5.8 to 8.0 under the condition that the temperature is 25 DEG C to 40 DEG C and the speed is 200rpm; after the reaction is finished, carrying out separationand purification on a reaction solution to obtain the (R)-1-(2-trifluoromethylphenyl)ethanol. According to the method disclosed by the invention, when the concentration of the substrate is 10mmol/L,the yield of the product (R)-1-(2-trifluoromethylphenyl)ethanol is 92.31 percent and the e.e. value is greater than 99 percent; the product has better catalysis efficiency. Compared with a reported conversion strain, the stereoselectivity and the yield of converting the catalytic conversion substrate 2-trifluoromethylacetophenone of the strain into the product are relatively high.

The invention belongs to the field of novel materials and photocatalysis and particularly relates to a preparation method and application of a dark light catalytic non-photo-catalyst/activated carbon fiber composite material. The dark light catalytic non-photo-catalyst/activated carbon fiber composite material is characterized by comprising a non-photo-catalyst, an activated carbon fiber raw material, an adhesive and water. The preparation method comprises the following steps: cutting the activated carbon fiber to required size and perforating; weighing the non-photo-catalyst, and adding water to form a non-photo-catalyst solution; preparing a chitin powder adhesive; spray coating the non-photo-catalyst solution onto the surface of the activated carbon fiber, drying, spray coating the adhesive onto the surface of the coated non-photo-catalyst solution to fix the adhesive on the surface of the activated carbon fiber, and drying. The dark light catalytic non-photo-catalyst/activated carbon fiber composite material can purify pollutants through adsorption and catalysis functions under dark light or sufficient light, the formaldehyde degradation efficiency within 1 hour reaches 99.9%, the load is firm, the specific surface area is high, and the composite material can be regenerated in situ under sunlight exposure or at low temperature of 60 DEG C.

The invention relates to a regeneration method of a microchannel reactor Fischer-Tropsch synthesis catalyst. The method includes: firstly using an inert gas to replace synthesis gas in a reactor, thenunder a cracking reaction condition, carrying out cracking reaction on the macromolecular hydrocarbon adsorbed by a Fischer-Tropsch synthesis catalyst to obtain methane and light hydrocarbon, and then conducting oxidation and reduction. The method provided by the invention achieves regeneration of the cobalt-based Fischer-Tropsch synthesis catalyst in the microchannel reactor, the physicochemicalproperties and catalytic performance of the regenerated catalyst are similar to those of fresh catalysts, and the regeneration process has low energy consumption and low material consumption.

The invention relates to an in-situ regeneration device for a glass kiln SCR denitration catalyst, which comprises a denitration reactor, wherein the denitration reactor is connected with a washing device, a hot air conveying device and a dosing device; the dosing device is connected with a waste liquid collection device; the washing device is connected with the dosing device to form a circulation circuit. The in-situ regeneration device can be used for achieving in-situ regeneration of the denitration catalyst, and is high in regeneration efficiency, and meanwhile capable of preventing pollution of a regeneration solution to the environment, reducing the waste of regeneration solution and reducing the regeneration cost.

The invention provides a device for regenerating spherical hydroxyapatite for defluorination. The device comprises a defluorination reactor (1), a steam supply device (2), a steam generation device (3) and a water softener (4), wherein the steam supply device (2) is arranged at the bottom of the defluorination reactor (1); and the steam supply device (2), the steam generation device (3) and the water softener (4) are connected sequentially. According to the device for regenerating spherical hydroxyapatite for the defluorination, spherical hydroxyapatite is regenerated in a mode that steam is used for heating; the device has the characteristics of rapidness and high efficiency; and furthermore, the regeneration effect is improved greatly.

The invention relates to a low-temperature carbon-based combined desulfurization and denitrification flue gas system and a use method thereof. The system comprises a first reactor, a second reactor and a third reactor and the reactors have the same structures. Each one of the first reactor, the second reactor and the third reactor comprises a central carbon-based bed, left and right air distribution grilles and left and right gas collection tanks in the outer side. The carbon-based bed is filled with an activated carbon material. The system utilizes the three same reactors and has functions of fine desulfurization, denitration and regeneration. The fine desulfurization and denitratio processes are connected in series and are connected to the regeneration process in parallel and the processes are carried out simultaneously so that in-situ regeneration is really realized. The reactor comprises the central carbon-based bed, left and right air distribution grilles and left and right gas collection tanks. The bed has a large windward area so that uniform gas distribution in the work and regeneration processes is guaranteed and a floor space is reduced. The system further improves the desulfurization and denitrification performances of the activated carbon material.

The invention discloses pretreatment equipment for water supply of an ultra-pure water machine. The equipment comprises a pretreatment system and a water storage system, wherein the pretreatment system comprises a water treatment reactor; the water storage system comprises a water storage tank; a water inlet end of the water treatment reactor is communicated and connected with a tap water pipe; a valve switch is also arranged on a water pipeline between the tap water pipe and the water treatment reactor; a water outlet end of the water treatment reactor is communicated and connected with a water inlet end of the water storage tank; a water outlet end of the water storage tank is communicated and connected with a water inlet end of the ultra-pure water machine; the equipment further comprises a control feedback unit; the control feedback unit comprises an electromagnetic valve and a resistivity monitoring device; the resistivity monitoring device and the electromagnetic valve are connected in series with a water pipeline between the water treatment reactor and the water storage tank; the electromagnetic valve is located on a water outlet side of the resistivity monitoring device; the resistivity monitoring device and the electromagnetic valve are electrically connected with an on-line feedback system. The equipment can improve influent quality of the ultra-pure water machine and prolong the service life of the ultra-pure water machine.

The invention relates to a suspension type ecological restoration plate and a multi-medium artificial mattress comprising the same. The suspension type ecological restoration plate is an ecological restoration apparatus, which comprises functions of multi-medium adsorption, microbial degradation, and rapid growth of submerged plants. In the prior art, the ecological bag is used, the area of wall of pool for submerge plants is limited, rooting is difficult on the wall, and the growth of submerged plants is influenced. The provided ecological restoration plate can solve the problems mentioned above. The ecological restoration plate comprises a frame and a suspension ring and also comprises a chemical fiber silk screen, granular active carbon, zeolite particles, degradable starch particles, a plurality of plant bags, and a beehive plate; the beehive plate is arranged in the frame, granular active carbon, zeolite particles, and degradable starch particles are filled in a beehive arranged on the beehive plate, the chemical fiber silk screen is arranged on two surfaces of the beehive plate, and the plant bags are stitched on the external surface of the chemical fiber silk screen. The multi-medium artificial mattress comprises a mattress support, a floating body, a valve, a rod, and a suspension type ecological restoration plate. The suspension type ecological restoration plate is hung on the rod.

The invention relates to the field of molecularly imprinted materials, and discloses a preparation method of a targeted adsorption in-situ regeneration hydrophilic nano molecularly imprinted material.The preparation method comprises the following steps: preparing multi-group nano carbon spheres from syrup wastewater, synthesizing carbon and nitrogen co-doped nano TiO2 carbon spheres on the surfaces of the nano carbon spheres in situ by adopting a sol-gel method, and calcining to remove cores to form a hollow structure, thereby enhancing the yield and specific surface area of the surface molecularly imprinted polymer, and having multiple binding sites and high mass transfer rate; using sulfanilamide and nitrosamine pollutants as target molecules, using resorcinol and melamine as bifunctional monomers, using a formaldehyde aqueous solution and TiO2 as double cross-linking agents, and using acetonitrile i as a pore-forming agent to form a carbon nanosphere surface molecularly imprinted hollow material so that the specific surface area of the molecularly imprinted material is increased, higher targeted adsorption capacity is achieved, operation is easy, and the use amount of chemicalagents is small; with the use of C, N-TiO2 photocatalytic material in the material, visible light is directly utilized to catalyze and degrade target molecules, and in-situ regeneration and repeated utilization of the molecularly imprinted material are realized.

The invention relates to a Fe3O4/Ag@Si three-dimensional composite electrode, a preparation method thereof and an advanced oxidation integrated technical system, and belongs to the technical field ofenvironmental functional material synthesis and sewage treatment. The composite electrode is prepared through growing three-dimensional dendritic elemental silver on P-type boron-doped monocrystallinesilicon and loading the three-dimensional dendritic elemental silver with Fe3O4. The composite electrode is used for electrolysis and catalysis of persulfates and organic pollutants in water can be removed through advanced oxidation.

The invention discloses a selective heavy metal ion adsorption material polyacrylonitrile-sulfur@melamine sponge which is prepared by forming a polyacrylonitrile-sulfur polymer through a high-temperature polymerization reaction of polyacrylonitrile and sulfur and fixing polyacrylonitrile-sulfur in a melamine sponge skeleton structure through a hot solvent bonding method. The polyacrylonitrile-sulfur@melamine sponge has selective adsorbability, the removal rate of copper in copper-containing wastewater is high, an electrolytic tank is formed by the polyacrylonitrile-sulfur@melamine sponge, a cathode, an anode and an electrolyte solution, copper-sulfur efficient separation is carried out through an electrochemical anodic oxidation reaction to regenerate an adsorption material, and copper deposition recovery is carried out through a cathodic reduction reaction. Environment-friendly, efficient and low-cost up-to-standard treatment and resource recycling of copper in copper-containing wastewater are achieved, the preparation raw materials are wide in source, cheap and easy to obtain, the preparation process is simple, and large-scale production is facilitated.

The invention relates to the technical field of blast furnace gas desulfurization, in particular to a blast furnace gas organic sulfur conversion device and method and an organic sulfur conversion catalyst regeneration method. The conversion device comprises a reactor containing a gas distributor and at least one catalyst bed layer, a spraying regeneration system and at least one liquid collection bag, the catalyst bed layer comprises an organic sulfur conversion catalyst bed layer, the spraying regeneration system is used for cleaning and/or regenerating the catalyst bed layer, and the liquid collection bag is used for collecting the organic sulfur conversion catalyst bed layer. The liquid collecting bag is used for collecting water in the blast furnace gas and optional liquid for cleaning and/or regenerating the catalyst bed layer; wherein the ratio of the height of the catalyst bed layer to the diameter of the reactor is (0.1-2): 1. The conversion device provided by the invention can significantly reduce the pressure drop of blast furnace gas passing through the catalyst bed layer, improve the conversion efficiency of organic sulfur, and realize in-situ regeneration of the organic sulfur conversion catalyst, thereby ensuring long-term stable operation of the blast furnace gas conversion device.