40results about How to "Promote positive response" patented technology

The invention relates to a continuous synthesis system and method of ethyl 4-chloroacetoacetate. The method comprises the steps of adopting diketene, chlorine and ethyl alcohol as raw materials and inputting the raw materials into a micro-channel reactor through a metering pump; and carrying out chlorination and esterification and then synthesizing the ethyl 4-chloroacetoacetate. The reaction time is greatly shortened, and the produced product is high in content, low in cost, small in pollution and high in security and meets the requirements of industrial production.

The invention belongs to the chemical field of bio oil, and in particular relates to a method for preparing biodiesel by utilizing oil plants. The invention discloses a method for preparing biological diesel by utilizing oil plants. The method utilizes the seeds oil plants as raw materials; an oil extraction solvent and a transesterification solvent form a double liquid phase mixed solvent; and in the presence of a solid base catalyst, the double liquid phase mixed solvent in different volumes is refilled for grease extraction and a transesterification reaction. The invention mainly solves the problem that one step synthesis of biodiesel by double liquid phase mixed solvent in the prior art has disadvantages of inhibition on the synthesis of biodiesel by reaction raw materials and inability to increasing yield, and provides a high-efficiency and high-yield method for synthesis of biodiesel.

The invention discloses an intermittent reaction-continuous reaction rectification combined process for catalytic synthesis of oxalic acid. The process particularly comprises the following steps: (1) continuously feeding materials into a reactive dividing-wall rectification tower in a double batch reactor switching mode; (2) enabling dimethyl oxalate and water to enter a batch reactor to react primarily, wherein the equilibrium conversion rate reaches 50%-60%; and (3) continuously feeding reaction solution into a left-side reaction section ( zone b) of the reactive dividing-wall rectification tower from an upper feeding opening, continuously feeding normal-temperature water into the reactive dividing-wall rectification tower from a lower feeding opening of the zone b, and continuously discharging methyl alcohol produced in the reaction process from the tower top, wherein due to the discharging of methyl alcohol, the reaction proceeds to production of oxalic acid until dimethyl oxalate is completely hydrolyzed and the conversion rate can reach 99.5% or above. By virtue of the reactive dividing-wall rectification tower, the synthesis reaction and product separation and purification are implemented in the same tower, the existing process flow is simplified, and energy consumption and investment can be lowered. The intermittent reaction-continuous reaction rectification combined process for catalytic synthesis of oxalic acid has the characteristics of no addition of extra additives, high reaction speed, high conversion rate, low water-ester ratio, simple product separation operation, low energy consumption and the like.

The invention discloses a clean and high-conversion-rate preparing method of 2,2,2-trifluroacetophenone. The method includes the following steps of S1, making N,O-dimethylhydroxylamine hydrochloride as the raw material react with organic alkali to obtain free N,O-dimethylhydroxylamine; S2, making trifluoroacetic anhydride react with free N,O-dimethylhydroxylamine to generate N,O-dimethyltrifluoroacetamide; S3, making a Grignard reagent react with N,O-dimethyltrifluoroacetamide to prepare trifluroacetophenone, recovering N,O-dimethylhydroxylamine generated in the step S1, applying N,O-dimethylhydroxylamine to the step S2, and recycling the reaction solvents used in the steps S1, S2 and S3. By means of the preparing method, prepared high-nucleophilicity N,O-dimethyltrifluoroacetamide reactswith the Grignard reagent, 2,2,2-trifluroacetophenone is efficiently prepared, meanwhile produced byproducts can be applied for preparing N,O-dimethyltrifluoroacetamide, and a recycling effect is achieved.

The invention relates to a preparation method of bisphenol A-bis(diphenyl phosphate). The preparation method comprises the following steps of 1, an esterification reaction, wherein phosphorus oxychloride is dropwise added into a bisphenol A solution containing a solvent, the esterification reaction is conducted in the presence of a Lewis catalyst, and reduced pressure distillation is conducted onthe phosphorus oxychloride after the reaction is completed; 2, an end-capping reaction, wherein end capping is conducted by using phenol, the phenol is recycled under reduced pressure to obtain a bisphenol A-bis(diphenyl phosphate) crude product; 3, refining of the crude product, wherein the crude product is washed with alkali and water, and then reduced pressure distillation is conducted to obtain the product. According to the method, the phosphorus oxychloride is dropwise added into the solution of bisphenol A and xylene or toluene, the method is convenient and reliable to use and easy to operate and does not need special equipment, the solvent can be recycled, the consumption is reduced, the quality of products in a batch production process is ensured, the yield is stable, and high-endproducts can be stably generated.

The invention discloses a process for preparing high-purity ethiprole through an oxidation method. The process comprises the following steps of: carrying out oxidation reaction on a right amount of raw material 5-amido-3-cyano-group-1-(2,6-dichloro-4-trifluoromethyl phenyl)-4-ethyl sulfinyl pyrazole (I) in an organic solvent with the participation of fatty acid and hydrogen peroxide; after the oxidation reaction is finished, adding a reducing agent and controlling the temperature of a system at the same time; then regulating the pH value of the system through an NaOH solution; then heating, refluxing, cooling, crystallizing and carrying out suction filtration to obtain a crude ethiprole product; purifying the crude ethiprole product (II) so as to obtain a qualified product, wherein the organic solvent is selected from at least one of chloroform, dichloromethane and dichloroethane. The production process disclosed by the invention has the advantages of simplicity, high efficiency, few by-products, bigger breakthrough on product yield and product purity, relatively low raw material toxicity, little environmental pollution and good production controllability.

The invention belongs to the field of plastic film production processing and in particular relates to a super bright low-melting-point polyester biaxial oriented film and a preparation method thereof. The thickness of the low-melting-point polyester biaxial oriented film is 25-350 microns, and horizontal and longitudinal thermal shrinkage rates of 15 minutes at the temperature of 150 DEG C are respectively less than 1.5%. The preparation method comprises the following steps: firstly preparing a supported catalyst super bright modifier for a super bright supported catalyst by virtue of a sol-gel process, then beating terephthalic acid and ethylene glycol by utilizing the supported catalyst super bright modifier, so that beating liquid is obtained, then taking the beating liquid as a raw material to prepare an esterified product by virtue of an esterification process, then carrying out a pre-polycondensation process, so that super bright low-melting-point polyester is obtained, then pre-crystallizing the super bright low-melting-point polyester, and then preparing the super bright low-melting-point polyester biaxial oriented film by virtue of a biaxial orientation technology. The super bright low-melting-point polyester biaxial oriented film has excellent machinability and has broad application prospects in the industries of electronics, packaging, printing and the like.

The invention discloses a method for leaching copper out of lead matte. The method for leaching the copper out of the lead matte includes the steps that sulfuric acid is added into the lead matter, a sizing agent is obtained, and steam is introduced into the sizing agent to make the temperature of the sizing agent rise; an adding agent is added into the sizing agent, a slurrying material is obtained, it is stopped to introduce steam into the slurrying material, oxygen is introduced into the slurrying material to perform oxidizing leaching till the temperature of the slurrying material is not risen any more, a reaction product sizing agent is obtained and is filtered, and leaching residues and leaching liquid containing copper are obtained. According to the method for leaching the copper out of the lead matte, the lead matter serves as a raw material, the reaction condition is accurately controlled by means of steam heating, and therefore the leaching-out rate of the copper is increased. Thus, the method for leaching the copper out of the lead matte is high in raw material adaptability, and simple in procedure and operation, the copper leaching-out rate is high, pollution to the atmosphere is small, the recycling rate of the copper in the lead matter can be increased, and therefore waste of copper resources can be avoided.

The invention discloses a non-toxic gold leaching agent and a preparation method thereof. The non-toxic gold leaching agent is primarily prepared from the following components in parts by mass: 5-50 parts of a transitional metal compound, 1-10 parts of organic alkali, 20-100 parts of carbonate and 20-100 parts of an amide compound. The non-toxic gold leaching agent is wide in raw material source,easily available, simple in process and low in cost. By adding organic alkali to promote a positive reaction, the agent generation rate is improved and the agent consumption cost is lowered. In a preparation process, by adopting oxygen-enriching air, the oxygen potential of air in the reaction process can be improved, side reactions are inhibited, the reaction generation rate is improved, and thenon-toxic gold leaching agent is small in consumption of agents and good in gold leaching effect.

The invention provides a process using synthetic gas and fluidized beds to prepare methanol based on interstage absorption and separation. The process is characterized in that a reaction system comprises a methanol fixed bed pre-reactor and the two-stage or multi-stage serially-connected methanol fluidized bed reactors, the purified synthetic gas with the ratio of CO to H2 being 1:2 after conversion is allowed to enter the first-stage fluidized bed reactor with a cooler tube through the methanol fixed bed pre-reactor, part of CO and H2 has average-temperature methanol synthetic reaction with micro-powder methanol catalyst through the cooler tube under 200-280 DEG C and 3.0-7.0Mpa, a gas-solid separator is used to remove the catalyst of the product gas, and the product gas is cooled by a water cooler and enters a methanol absorption and separation tower; the product gas enters the subsequent-stage methanol fluidized bed reactors with cooler tubes after methanol removing, and the process above is repeated; part of separated tail gas is discharged and part of the separated gas is pressurized and returned to serve as the synthetic gas raw material; methanol-rich absorption liquid on the upper section of the absorption tower is subjected to depressurization and flash evaporation to recycle methanol, and the methanol is used as the absorption agent of the lower section of the tower to absorb the methanol and remove fine powder; the methanol discharged from the bottom of the tower is collected and subjected to impurity removing and enters a rectification system.

The invention relates to an anthracene oil hydrogenating circulating hydrogen recycling and purifying device. The device comprises a desulphurization mechanism and a variable pressure adsorption mechanism, wherein the desulphurization mechanism comprises a desulphurization solvent slot, a solvent circulating pump and a desulphurization tower, the desulphurization solvent slot is connected with the upper part of the desulphurization tower by virtue of the solvent circulating pump, an inlet in the lower part of the desulphurization tower is connected with an anthracene oil discharging hydrogen pipeline and a fluidized bed discharging hydrogen pipeline, an outlet in the bottom of the desulphurization tower is connected with a filter, the variable pressure adsorption mechanism is composed of a deep freezer and two variable pressure adsorption tanks which are connected in parallel, a gas outlet in the top of the desulphurization tower is communicated with the deep freezer, an outlet of the deep freezer is connected with the variable pressure adsorption tank which are connected in parallel, and an outlet in the bottom of the deep freezer is connected with the filter. The anthracene oil hydrogenating circulating hydrogen recycling and purifying device greatly improves anthracene oil hydrogenating circulating hydrogen recovery utilization rate, raw material hydrogen amount of a hydrogenating device is saved through recycling, and hydrogen purity of a reaction system is improved, intra-system hydrogen partial pressure is guaranteed, forward reaction of a catalyst is promoted, and the device provided by the invention has the advantages of reasonable design, easy operation, energy conservation and environmental protection.

The invention discloses an online separation reforming hydrogen production method capable of enhancing reaction efficiency and a device for realizing the method. A reactor of the method is composed ofinner, middle and outer concentric circular tubes made of three different materials, an upper end cover and a lower end cover, the three concentric circular tubes form three cavity channels, namely an inner cavity, a middle cavity and an outer cavity, and the upper end cover and the lower end cover are installed on the upper portion and the lower portion of the cavity channels. The lower end cover seals the lower ends of the middle cavity and the outer cavity, and the upper end cover is provided with a plurality of holes for providing a high-temperature fluid inlet for the inner cavity and providing an air inlet for the middle cavity. A high-temperature fluid flows into the inner tube to provide energy for reaction. The outer wall surface of the inner tube is coated with a catalyst. A reactant gas is introduced into the middle cavity channel; and the reactant gas and the catalyst are subjected to catalytic reaction. The middle tube is prepared by adopting different separation membranes, so that a gas product is separated into the outer cavity. And the outer cavity channel is correspondingly isolated into different gas product areas. By adopting the method provided by the invention, the conversion rate of the reactant can be remarkably improved, and the volume and weight of the whole reforming reaction system are reduced.

The invention provides a phospholipid substance containing Omega-3 fatty acid and a preparation method thereof. In the phospholipid substance, the content of phospholipid is more than 80%. Main fattyacid in the phospholipid is one of DHA or EPA, wherein the content of the main fatty acid is 50-90% and the content of the other one is less than 1%. The phospholipid substance is high in phospholipidcontent, high in Omega-3 fatty acid purity in the phospholipid, single in composition and clear in function, and can be applied in the field of specific medicine, dietary supplements and food additives. Meanwhile, the invention also provides a method for preparing the phospholipid substance. The method is simple in process and low in cost, is suitable for industrial production, and makes up for shortcomings of conventional preparation methods.

The invention relates to a message distribution method and device, electronic equipment and a storage medium, and the method comprises the steps: receiving a service request message sent by a target application platform, and the service request message comprises the target platform identification information of the target application platform; respectively sending prompt information to a plurality of to-be-distributed users in a preset user library; the preset user library comprises a plurality of to-be-distributed users and platform identification information corresponding to the to-be-distributed users; if a trigger operation of a first user for the prompt information is monitored within a preset time threshold, distributing the service request information to the first user; and otherwise, allocating the service request message to a second user in the plurality of users to be allocated according to the target platform identification information and the platform identification information corresponding to each user to be allocated.

The present invention relates to a method for producing isopropanol, the method comprising: supplying a supply stream comprising a propylene monomer and water to a reaction unit to cause the propylene monomer and water to react with each other, thereby producing a reaction product comprising isopropanol, propylene monomer and water; feeding each of a first discharge stream comprising a gas-phase reaction product discharged from the reaction unit and a second discharge stream comprising a liquid-phase reaction product discharged from the reaction unit to a stripping column; and separating from the stripping column a top drain stream comprising propylene monomer and a bottom drain stream comprising water and isopropanol wherein the first drain stream is condensed through a first heat exchanger and fed to the stripping column in a liquid phase.

The invention discloses a method and device for improving the ore pulp desulfurization reaction rate by using a surfactant. The method comprises the following steps: S1, preparing phosphoric ore pulpwith a liquid-solid ratio of 30-50%, and uniformly mixing the surfactant in the phosphoric ore pulp to obtain absorption slurry; and S2, uniformly mixing flue gas to be desulfurized with oxygen, fullymixing the mixed gas with the absorption slurry obtained in the step S1 for reaction, and discharging the treated flue gas. The phosphorus ore pulp mixed with the surfactant is used for flue gas desulfurization, turbulence resistance reduction can be achieved, mass transfer resistance of SO2 absorption is reduced, the suspension property of the ore pulp is enhanced, and therefore the reaction ispromoted, and the desulfurization reaction rate and desulfurization efficiency are remarkably improved. The device provided by the invention has the advantage of rapid reaction, has an automatic deslagging function, does not influence flue gas treatment, and is convenient and efficient to operate.