228results about "Chemical liquid solidification" patented technology

A process is provided for transferring a product from a first polymerization zone (101) to a second polymerization zone (301) arranged in series with the first polymerization zone (101). The process comprises: discharging a product of the first polymerization zone (101) from the first polymerization zone (101); separating the product into a gas phase comprising any unreacted monomer and gaseous agent used in the first polymerization zone (101), and a solid phase comprising a polymerization product; and transferring the solid phase to the second polymerization zone (301) via at least one of a first transfer vessel (202) and a second transfer vessel (203) arranged in parallel to each other and in selective communication with each other, wherein the at least one of the first transfer vessel (202) and second transfer vessel (203) is further in selective communication with the second polymerization zone (301), and the second polymerization zone (301) is a gas-phase polymerization zone.

Compositions for preventing or limiting surface fouling as well as evaporation and methods for their use in air-matrix digital microfluidics (DMF) apparatuses are described. A mobilizing wax material may be used to selectively encapsulate a reaction droplet in the air gap of the apparatus, which permits the at least partially encapsulated reaction droplet to be portable within the DMF apparatus. Additional aqueous droplets may be combined with the encapsulated droplet, by merging with an aqueous droplet having a coating of a secondary material (e.g., an oil or other hydrophobic material) that may allow combining of the droplets. The compositions may be additionally useful in non-DMF applications such as laboratory protocols for hybridization, ligation and amplification.

A process for producing a polyester solids mixture by adding together a proportion of recycled polyester material and a proportion of polyester material from a polyester manufacturing process. The proportion of recycled polyester material in the polyester solids mixture comprises 10-90% and has a b* value (BR), and the proportion of polyester material from a polyester manufacturing process in the polyester solids mixture comprises 90-10% and has a b* value (BN) and the resulting polyester solids mixture has a b* value (BM), wherein the BM<0, BN<0 and BR>BN.

The disclosure relates to the purification and treatment of oil produced from the liquefaction of waste polymer like for instance the pyrolysis of waste plastics via the polymerization of dienes prior to further treatments.

The disclosure relates to the purification and treatment of oil produced from the liquefaction of waste polymer like for instance the pyrolysis of waste plastics via the polymerization of dienes prior to further treatments.

The disclosure relates to the purification and treatment of oil produced from the liquefaction of waste polymer like for instance the pyrolysis of waste plastic via the polymerization of dienes prior to further treatments.

The invention provides a liquid drop continuous generation device which comprises a first flow channel and a second flow channel, the first flow channel and the second flow channel comprise first positions which are tightly attached to each other, and each first position comprises a through hole communicating with the first flow channel and the second flow channel; the first flow channel and the second flow channel are used for introducing a first liquid and a second liquid respectively; the special ultrasonic device can act on the first liquid in the first flow channel, when the special ultrasonic device is driven in a first power period, an acoustic beam current facing the through hole is generated in the first liquid, the acoustic beam current enters the second liquid through the through hole, and liquid drops formed by the first liquid are formed in the second liquid. The invention also correspondingly provides a method for continuously generating liquid drops. The liquid drop generation mode is more flexible, the controllability is higher, and the cost is lower.

The invention discloses a high-efficiency short-process production method and production system for carbonization-process white carbon black, an absorption reaction is completed in a normal-pressure gas-liquid small-sized carbonization reaction kettle, and rapid continuous reaction of CO2 gas and liquid sodium silicate in the carbonization reaction kettle is realized through high-strength stirring and gas-liquid interface contact enhanced absorption; and high-efficiency absorption of carbon dioxide is realized under normal-pressure reaction conditions. The carbonization reaction is carried out in a small-sized carbonization reaction kettle, the precipitation reaction can be carried out in a large-sized precipitation reaction kettle according to the scale, the solid-liquid reaction is carried out in the precipitation reaction kettle, and the silicon dioxide micro particles generated by the absorption reaction are subjected to uniform mixing by controlling the reaction time, the reaction temperature and the reaction pH value. The particles are further aggregated and grown to form the silicon dioxide particles with stable structure and reliable performance, the structure is stable, the performance is reliable, and the utilization efficiency of raw materials is improved.

Described is a continuous process for producing a polycarbonate in a plant comprising a mixing vessel, a pre-transesterification reactor, at least two transesterification reactors, at least one pre-polycondensation reactor and a final polycondensation reactor connected in this order, wherein the process comprises the following steps: a) mixing a melt of bisphenol with diaryl carbonate in the mixing vessel to form a raw material melt, b) adding transesterification catalyst to the raw material melt to form a raw material melt mixture, c) pre-transesterfying the raw material melt mixture in the pre-transesterification reactor at a pressure of equal to or above 1 bar(a) to form a partially transesterified reaction mixture, d) continuing transesterification of the partially transesterified reaction mixture in the transesterification reactors at a pressure of below 1 bar(a) to form a transesterified reaction mixture, e) polycondensing the transesterified reaction mixture in the pre-polycondensation reactor(s) at a pressure of below 1 bar(a) to form a pre-polycondensation product, and f) continuing the polycondensation of the pre-polycondensation product in the final polycondensation reactor at a pressure of below 1 bar(a). The process of the invention improves the robustness and / or flexibility of the polycarbonate production and enables production of high quality polycarbonate.

The invention provides a method of reducing a gaseous carbon oxide to carbon, the method comprising mixing a gas comprising a gaseous carbon oxide with a liquid metallic composition by producing a dynamic interface between the gas and the liquid metallic composition, wherein the liquid metallic composition is not dispersed as droplets in a liquid carrier during the mixing and wherein the gaseous carbon oxide reacts stoichiometrically with at least one metal in the liquid metallic composition to form carbon and metal oxide.

The disclosure relates to the purification and treatment of oil produced from the liquefaction of waste polymer like for instance the pyrolysis of waste plastic via the polymerization of dienes prior to further treatments.

The invention provides a ceramic powder and base membrane dispersed diaphragm preparation process, a ceramic diaphragm and equipment thereof. The preparation process of the diaphragm with dispersed ceramic powder and base membrane comprises the following steps: obtaining the ceramic powder; introducing an air source into the ceramic powder, wherein the flow velocity of the air source is 80 sccm to 100 sccm; the gas source is subjected to plasma treatment, modified ceramic powder is obtained, the plasma power source power ranges from 400 W to 800 W, the discharge voltage ranges from 700 V to 1000 V, the discharge current ranges from 0.5 A to 3 A, and the temperature ranges from 80 DEG C to 150 DEG C; an adhesive, a dispersing agent and the modified ceramic powder are mixed in a solvent to obtain modified ceramic powder coating slurry, and the ratio of the adhesive to the modified ceramic powder to the dispersing agent is 5: (93-94): (1-2); and coating a base membrane with the modified ceramic powder coating slurry to obtain the modified ceramic powder composite diaphragm.

The invention discloses a method for preparing recombinant collagen microspheres by photo-crosslinking, which comprises the following steps: dissolving recombinant collagen grafted with carbon-carbon double bonds and a photoinitiator in deionized water to serve as a dispersion phase, and taking fluorinated oil containing a surfactant as a continuous phase; respectively injecting the dispersed phase and the continuous phase into a micro-droplet generation chip by using a micro-injection pump of a microfluidic reaction device, and preparing emulsion microspheres under the shearing action; the emulsion microspheres are subjected to light curing under ultraviolet irradiation, washing and freeze drying are performed, and the recombinant collagen microspheres are obtained. According to the method, the recombinant collagen microspheres are prepared by utilizing a photo-crosslinking technology, the preparation process is simple, convenient and rapid, the operation is easy, not only are the dispersity and the size uniformity of the microspheres improved, but also the preparation effect is more advantageous. The microspheres prepared by the invention have good biocompatibility, can effectively promote the expression of local collagen genes after subcutaneous implantation, and are expected to be used as a facial filler in the medical beauty industry.

Embodiments of a dual reactor solution polymerization process include: introducing a first feed comprising an ethylene monomer, optionally hydrogen, optionally a C3-C12 alpha-olefin comonomer, and a hydrocarbon solvent into a first polymerization reactor to produce a first reactor product comprising an ethylene-based polymer via solution polymerization at a temperature of 100 DEG C to 225 DEG C; and introducing the first reactor product and a two-phase second feed comprising an ethylene monomer, a hydrocarbon solvent, optionally hydrogen, and optionally a C3-C12 alpha-olefin comonomer to a second polymerization reactor to produce an ethylene-based polymer via solution polymerization, wherein the weight ratio of the sum of hydrocarbon solvent plus comonomer in the two-phase second feed to ethylene monomer is 0.1 to 2.0.

The invention discloses a core-shell microsphere device and a microsphere manufacturing method, and relates to the technical field of biological medicines.The core-shell microsphere device comprises a propelling assembly, a mixing assembly and a light curing assembly.The propelling assembly comprises a first propeller, a second propeller and a third propeller which are used for extruding a core material, a core-shell material and a protective material respectively; a power device of the propelling assembly pushes an injector in a screw transmission mode to continuously extrude materials, so that the efficiency and the control precision are improved; the first propeller, the second propeller and the third propeller inject different materials into the mixing device, so that the three materials are sequentially coated, and the core-shell material and the protective material are sequentially coated outside the core material to form a finished product; the light curing assembly comprises a containing plate and a light source, a spirally-arranged curing channel is formed in the containing plate, the main pipe communicates with the curing channel, the light source can irradiate finished products located in the curing channel to achieve the curing function, and the control module is electrically connected with the propelling assembly and the mixing assembly.

The utility model discloses a push-pull grouting material disc for emulsifier production, and belongs to the field of emulsifier production. A push-pull type grouting material disc for emulsifier production comprises a shell, a solidification cavity is formed in the middle of the interior of the shell, an outer transmission rod used for transmission is arranged in the middle of the interior of the solidification cavity, and a detachable strip-shaped cutting strip is arranged on one side of the lower end of the outer transmission rod. The utility model solves the problems that the existing injection push-pull type slurry disc can only cut the lower end, the front end and the rear end of a rectangular emulsifier, and the two sides of the emulsifier cannot be cut. The emulsifying agent surrounding the outer transmission rod can completely fall off from the inner wall of the shell, after the emulsifying agent is supported by the strip-shaped cutting strips, the emulsifying agent can fall off by detaching the strip-shaped cutting strips, and discharging of the emulsifying agent is achieved.

Equipment for automatic polymerization of polycondensation polymers and other polyurethane systems and method showing equipment (E) capable of mixing inputs in a controlled manner with regard to quantities, temperatures, stirring / mixing and reaction times, resulting in polymers for different purposes, including polycondensation polymers and polyurethanes, and also an operation method of said equipment (E) with regard to programming and execution of recipes.

The disclosure relates to the purification and treatment of oil produced from the liquefaction of waste polymer like for instance the pyrolysis of waste plastic via the polymerization of dienes prior to further treatments.

The present disclosure provides a ceramic powder and base film dispersed diaphragm preparation process, a ceramic diaphragm and equipment thereof. The ceramic powder and base film dispersed diaphragm preparation process comprises the following steps: obtaining a ceramic powder; introducing a gas source into the ceramic powder, the flow rate of the gas source being 80-100 sccm; performing plasma treatment on the gas source to obtain a modified ceramic powder, wherein the plasma power is 400-800 W, the discharge voltage is 700-1000 V, the discharge current is 0.5-3 A, and the temperature is 80-150 DEG C; mixing a binder, a dispersant and the modified ceramic powder in a solvent to obtain a modified ceramic powder coating slurry, the ratio of the binder, the modified ceramic powder and the dispersant being 5:93-94:1-2; and coating the modified ceramic powder coating slurry on a base film to obtain a modified ceramic powder composite diaphragm.

Methods and systems for producing cement binder without wall packing or interfacial transition zones are provided. A metal hydroxide is reacted with a silicate to produce a silicate precursor. The silicate precursor is then mixed with aluminosilicate material which forms a condensation reaction directly in the solution, resulting in a binder that does not rely on a surface-alone reaction.

The disclosure relates to the purification and treatment of oil produced from the liquefaction of waste polymer like for instance the pyrolysis of waste plastics via the polymerization of dienes prior to further treatments.

The disclosure provides a flushing process for removing polymer fouling from a reactor including a gas distributor proximal to the bottom thereof and an internal condenser proximal to the top thereof, the method including, for a first flushing time period, injecting a flushing solvent into the reactor and withdrawing the flushing solvent from a reactor outlet proximal to the internal condenser to induce an upward movement of flushing solvent, the withdrawn flushing solvent containing a first polymer content. After the first flushing time period is complete, for a second flushing time period, the process includes injecting a flushing solvent into the reactor and withdrawing the flushing solvent from a reactor outlet proximal to the gas distributor to induce a downward movement of flushing solvent, the withdrawn flushing solvent containing a second polymer content.

Provided are a method for producing a polymer in which the composition or molecular weight of structural units is highly controlled in addition to high purity, and a device for producing a polymer. A method for producing a polymer, which obtains a polymer by radical polymerization in the coexistence of an azo polymerization initiator, two or more types of monomers, and a solvent, the method comprising a first step for radical polymerization in a tubular reactor, and a second step for radical polymerization in the tubular reactor, performing the radical polymerization in a stirred tank reactor after the first step; the maximum solid content concentration (C1max) on a mass basis in the first step is 30 mass% or more, the maximum solid content concentration (C2max) on a mass basis in the second step is less than 50 mass%, and the maximum solid content concentration (C1max) and the maximum solid content concentration (C2max) satisfy C1max > = C2max.

[Problem] A handling device for an easily polymerizable substance, capable of inhibiting polymer generation in ancillary equipment is provided. [Solution] A handling device 10 for an easily polymerizable substance includes: ancillary equipment 30 installed at a body part 20 in which an easily polymerizable substance is handled, the ancillary equipment 30 including no temperature control mechanism 40 that gas of the easily polymerizable substance can contact; and a temperature control mechanism 40 configured to control the temperature of the ancillary equipment 30 to a temperature lower than the boiling point of the easily polymerizable substance and to a temperature higher than the melting point of the easily polymerizable substance.

The continuous solution polymerization process according to an exemplary embodiment comprises: producing a product comprising a polymer through a polymerization process in a reactor; separating the product into a first solution comprising the polymer and a second solution comprising the polymer in the liquid-liquid separator; supplying the first solution to a devolatilizer and supplying the second solution separated to a solid-liquid separator (S / L separator); separating the second solution into a vapor comprising the polymer and a liquid-state polymer in the devolatilizer; separating the second solution and the vapor comprising the polymer into a solvent capable of being introduced into the reactor and a solid comprising the polymer in the solid-liquid separator (S / L separator); and introducing and recirculating the solvent capable of being introduced into the reactor into the reactor.

The utility model relates to the technical field of bird repellent preparation equipment, and discloses a condensation curing device for bird repellent processing, which comprises a condensation curing box shell, the two sides of the condensation curing box shell are fixedly connected with water storage tanks, a spiral pipe is arranged in the condensation curing box shell, and the spiral pipe is fixedly connected with the condensation curing box shell. And meanwhile, blades are movably connected into the water storage tank in a sleeved mode, and an inner container is movably connected into the condensation curing box shell in a sleeved mode. According to the condensation and solidification device for bird repellent processing, spiral pipes are evenly installed outside a shell of the condensation and solidification box, the multiple sets of spiral pipes communicate with a water storage box, meanwhile, blades are arranged in the water storage box, after a condensation pipeline drives liquid to be injected into the water storage box, condensate can push the blades to rotate, and in the blade rotating process, the blades are not prone to falling off. And uniform circulation of the liquid in the water storage tank is improved, that is, the liquid is uniformly conveyed into the spiral pipe, so that the temperature uniformity is ensured when the outer part of the condensation curing box shell is condensed.

A continuous solution polymerization process may include producing a product including a polymer through a polymerization process in a reactor; separating the product into a first solution including the polymer and a second solution including the polymer in the liquid-liquid separator; supplying the first solution to a devolatilizer and supplying the second solution to a solid-liquid separator (S / L separator); separating the second solution into a vapor including the polymer and a liquid-state polymer in the devolatilizer; separating the second solution and the vapor including the polymer into a solvent capable of being introduced into the reactor and a solid including the polymer in the solid-liquid separator (S / L separator); and introducing and recirculating the solvent capable of being introduced into the reactor into the reactor.

The invention discloses a steel belt crystallization device for producing aluminum sulfate, and relates to the technical field of cooling crystallization equipment. The steel belt crystallization device for producing the aluminum sulfate comprises a rotatable steel belt, the steel belt is of a continuous belt-shaped structure, a plurality of virtual subareas are defined in the width direction of the steel belt, each subarea is called as a single belt, the adjacent single belts are connected through an elastic bending part, and the elastic bending part is arranged between the adjacent single belts. The elastic bending part allows each single belt to elastically deform independently in the width direction; the steel belt crystallization device comprises a wide steel belt, a plurality of narrow single belts and a force application ridge, the force application ridge is located at the discharging end of the steel belt, the force application ridge comprises a head part arranged between every two adjacent single belts, and two inclined parts are arranged at the end, close to the discharging end of the steel belt, of each head part. And the convex points on the single belt are accurately extruded by combining the force application ridges, so that the volume shrinkage stress in the material cooling and curing process is converted into a favorable driving force for promoting the material to be separated from the steel belt, and the material stripping is more thorough.

Embodiments of a dual reactor solution polymerization method comprising: introducing a first feed comprising ethylene monomer, optionally hydrogen, optionally C3-C12 alpha-olefin comonomer, and hydrocarbon solvent to a first polymerization reactor to produce via solution polymerization at a temperature from 100 to 225 °C a first reactor product comprising ethylene-based polymer; and introducing the first reactor product and a two-phase second feed comprising ethylene monomer, hydrocarbon solvent, optionally hydrogen, and optionally C3-C12 alpha-olefin comonomer to a second polymerization reactor to produce via solution polymerization ethylene-based polymer, wherein a ratio by weight of the summation of the hydrocarbon solvent plus comonomer to ethylene monomer in the two-phase second feed is from 0.1 to 2.2.

The present invention relates to the technical field of micro-nano robot preparation, and specifically to a micro-nano robot with sensing functions and a preparation method thereof. The preparation method comprises: step 1: adding copper sulfate pentahydrate particles to a resin, stirring, then adding a silane coupling agent, and stirring evenly to obtain an inner phase solution for preparing the micro-nano robot; step 2: adding polyvinyl pyrrolidone and sodium lauryl sulfate to deionized water, stirring evenly, to obtain an outer phase solution for preparing the micro-nano robot; step 3: utilizing microfluidic droplet forming technology, utilizing the solutions obtained in steps 1 and 2 as the inner and outer phases, respectively, adjusting the flow rates of the inner and outer phases, controlling the size of the droplets after forming, and curing with an ultraviolet lamp to obtain micro-nano robot substrate microspheres with a core-shell structure; and step 4: placing the micro-nano robot substrate microspheres obtained in step 3 into a magnetron sputtering instrument, and nickel-plating them under vacuum to obtain a micro-nano robot with sensing functions.