35results about "Petroleum chemical modification" patented technology

The invention provides a synthesis method and application of a sulfuration modified palladium-iron bimetallic material. The method comprises the steps that potassium borohydride and sodium sulfide nonahydrate are dissolved in a solvent, sodium hydroxide is added into a sulfuration solution, the pH of the sulfuration solution is adjusted to be alkaline, and an alkaline solution is obtained. The method comprises the following steps: dropwise adding an alkaline solution into a mixed aqueous solution of FeSO4. 7H2O and sodium tetrachloropalladate at a speed of 10mL / min in a nitrogen atmosphere; and separating the precipitate from the mixed aqueous solution in a magnetic separation manner, and washing the precipitate for three times by using oxygen-free water and absolute ethyl alcohol to obtain the palladium iron sulfide bimetallic particles. Through a one-step reduction method of vulcanization and palladium doping, vulcanization modification and bimetal modification are combined to act on zero-valent iron, the stability of the zero-valent iron is enhanced through vulcanization, meanwhile, the reactivity of the zero-valent iron is improved through addition of bimetal, especially the selectivity to pollutants such as chlorinated paraffin and the reactivity after surface passivation are improved, and the stability of the zero-valent iron is improved. And the reliability and efficiency of the zero-valent iron in organic pollution remediation are greatly improved.

The invention provides a preparation method of chlorinated paraffin 70 with a high softening point, and belongs to the technical field of chlorinated paraffins.The preparation method comprises the steps that S1, mixed wax is provided, and raw materials of the mixed wax are Fischer-Tropsch wax and petrochemical wax; s2, feeding the mixed wax into a reactor, then turning on an ultraviolet lamp in the reactor for irradiation, after liquid chlorine is gasified to form chlorine, feeding chlorine into the reactor, heating and carrying out segmented control reaction; s3, after the reaction is finished, blowing air into the reactor, then washing a reaction product with water, and then adding a compound stabilizer into a crude product obtained by washing with water, so as to obtain chlorinated paraffin 70; the chlorine content of the chlorinated paraffin 70 is not less than 69.5%, the softening point is not less than 98 DEG C, and the acid value is not more than 0.1 mgKOH / g. According to the method, hot chlorination and photo-initiation are combined, so that the chlorine content and the softening point of the product are controllable, the production efficiency is high, the reaction speed is high, the reaction temperature is reduced, the production period is shortened, and the product quality is stable.

The utility model belongs to synthetic chlorinated paraffin technical field especially, it is a kind of chlorinated paraffin catalytic reaction device, it includes device main part and feeding opening, the feeding opening is arranged at the top of device main body, chlorinated paraffin catalytic reaction device further includes: filter cartridge and connecting buckle, the filter cartridge swing joint is in the inner wall of feeding opening, the quantity of connecting buckle is two, two connecting buckles are fixedly connected in the outer wall of filter cartridge symmetrically;Slide, the quantity of slide is two, two slides are symmetrically slidingly connected in the top connecting plate of device main body, the quantity of connecting plate is two, two connecting plates are fixedly connected in the side of two slides mutually close, connecting plate and connecting buckle are adapted;In the utility model, filter cartridge is installed or disassembled by pressing plate driving connecting plate movement, filter cartridge is set in feeding opening, and paraffin raw materials are filtered conveniently, chlorinated paraffin production is facilitated, and good practicality and convenience are possessed.

The invention discloses oxidized paraffin and antirust wax and a preparation method thereof, and relates to the field of paraffin. The antirust wax comprises oxidized paraffin, an emulsifier, an antirust agent and water, and the emulsifier is at least one of sorbitan monooleate, lauryl sodium sulfate and fatty alcohol-polyoxyethylene ether; the antirust agent is at least one of cyclohexylamine stearate, alkenyl succinic acid and alpha-mercaptobenzothiazole; the oxidized paraffin is loaded with a Mn metal element through a carrier. The catalyst loaded with the active component Mn is added in the preparation process of the oxidized paraffin, the acid value and the soap value of the oxidized paraffin are effectively increased, the oxidized paraffin interacts with the specific emulsifier and the antirust agent, the emulsifier does not affect the anti-oxidation protection function of functional components, and meanwhile, the antirust agent and the oxidized paraffin cooperate with each other to achieve the anti-corrosion effect in a synergistic mode; and the antirust capability of metal in a humid and hot environment and an acid-base environment is improved, and the application prospect is expanded.

This invention belongs to the technical field of paraffin wax production equipment, and relates to an apparatus and method for continuous production of chlorinated paraffin wax using a multi-stage spray tower. The apparatus includes a spray tower body, with a tail gas outlet and a demister at the top. Several reaction sections are located below the tail gas outlet, with a demister at the top of the uppermost reaction section. Each reaction section has a spray device for uniform liquid spraying, a light source for catalysis, and a gas distributor for uniform gas distribution at the bottom. Each reaction section has a heat exchange device and a liquid storage device at the bottom. The reaction sections are connected to each other via external gas-phase and external liquid-phase circulation pipelines. Compared with existing processes, this invention offers a larger mass transfer area between chlorine and paraffin oil, a faster reaction rate, and controllable reaction depth, demonstrating significant potential for industrial application.

The utility model relates to the technical field of chemical production, in particular to a circulating chlorinated paraffin reaction kettle. The reaction kettle comprises a reaction kettle body, a feeding port is formed in the top of the reaction kettle body in a penetrating mode, a circulating pump is installed on the outer wall of one side of the reaction kettle body, a cleaning assembly is installed at the bottom of the reaction kettle body, the self-cleaning function of a filter screen is achieved by arranging the cleaning assembly, and a water tank and a water passing pipe provide a cleaning source for the filter screen and convey the cleaning source into a feeding pipe; a flushing space is formed by combining the on-off control of a butterfly valve for controlling fluid and the anti-backflow characteristic of a one-way valve, attachments on the surface of the filter screen are effectively removed, the filtering function of the filter screen is achieved, then the feeding pipe is prevented from being blocked again, cleaning can be completed in time without repeated manual disassembly in the cleaning process, and therefore it is ensured that the filter screen can be put into use rapidly; meanwhile, the water outlet pipe discharges waste materials, so that the occurrence of secondary blockage in the feeding pipe is reduced, and the influence of the use of the device on the reaction efficiency is reduced to the greatest extent.

The invention provides chlorinated paraffin continuous production equipment which comprises a kettle body, the top of the kettle body is shielded by a top cover, a guide cylinder with the bottom of a horn mouth structure is fixed to the center of the kettle body, a material lifting screw is arranged in the guide cylinder and rotationally connected with the top cover at the top, and the top of the guide cylinder is connected with a discharging disc of a reverse horn mouth structure. Round through holes are evenly distributed in the edge of the discharging disc, an air inlet is connected to the outer side of the top cover and communicated with an annular air disc air path in the top cover, and an air outlet pipe extending into the round hole of the discharging disc is arranged on the bottom face of the air disc. Chlorine is guided in by matching with the gas outlet pipe extending into the round hole, and under the action of gravity and tension, the flowing paraffin liquid is gradually closed to wrap the chlorine, so that the contact between the chlorine and the paraffin liquid is enhanced, the reaction speed is increased, the utilization rate of the chlorine is also improved, and the chlorine generator has a good development prospect.

The utility model discloses a chlorinated paraffin reaction device which comprises a fixed plate, a support frame, a pretreatment box body, a first driving motor, a first stirrer, a temperature sensor and a weight sensor, wherein the pretreatment box body is fixedly connected onto the support frame; the first driving motor is fixedly arranged on a first fixed frame; the first stirrer is arranged on a first rotating shaft; solid paraffin raw materials are added into the pretreatment box body, the weight sensor detects the weight of the solid paraffin raw materials, when the weight of the solid paraffin raw materials reaches a preset threshold value of the weight sensor, the buzzer is controlled to sound, and then the first driving motor and the heating pipe are controlled to work; the first stirrer stirs the solid paraffin raw material, so that the solid paraffin raw material can be uniformly heated, the temperature sensor detects the temperature in the pretreatment box body, and when the temperature rises to 80 DEG C, the heating pipe is controlled to carry out constant output, so that the solid paraffin raw material enters a molten state.

The present application relates to the field of computer-aided optimization of chemical process parameters, and particularly relates to a method for optimizing process parameters of a chlorinated paraffin thermal chlorination reaction. A base paraffin raw material is placed in a reactor, a composite free radical regulating system is injected into the reactor, and chlorine gas is introduced for thermal chlorination reaction. The composite free radical regulating system is composed of an organic peroxide and a nitrogen-containing heterocyclic compound. The organic peroxide is decomposed by heat to form primary free radicals at the initial stage of the reaction. The nitrogen-containing heterocyclic compound is temporarily complexed with free radicals in the system at the chain growth stage, and is released from the complex by heat when the concentration of free radicals in the system decreases. The free radical concentration dynamic balance is maintained throughout the thermal chlorination reaction by the system until the target chlorination degree is reached. The present application suppresses the nonlinear fluctuation of local free radical concentration and reduces the distribution deviation of combined chlorine content in the final product.

The invention discloses an unpowered circulating continuous chlorinated paraffin production skid-mounted integrated device, which relates to the technical field of chemical equipment, and adopts the technical scheme that the unpowered circulating continuous chlorinated paraffin production skid-mounted integrated device comprises a chlorination reaction tower, and the chlorination reaction tower comprises two chlorination reaction units and a gas-liquid separation unit which are sequentially connected from bottom to top; a driving rod is arranged in the chlorination reaction tower in a penetrating mode, a gas outlet mechanism is installed at the upper end of the chlorination reaction tower, an upper valve plate is arranged in the gas outlet mechanism, the gas outlet mechanism can be controlled to be opened and closed by lifting the upper valve plate, the upper valve plate is installed at the top of the driving rod, and a gas inlet mechanism is installed at the lower end of the chlorination reaction tower. A lower valve plate is arranged in the gas inlet mechanism, the gas inlet mechanism can be controlled to be opened and closed by lifting the lower valve plate, and the lower valve plate is installed at the bottom of the driving rod. Through the structural arrangement, the gas pressure in the chlorination reaction tower is effectively controlled, the internal pressure intensity is prevented from continuously rising, and potential safety hazards are eliminated.

The invention discloses a chlorinated paraffin production process for improving raw material utilization, belongs to the technical field of chlorinated paraffin production, and comprises the following steps: S1: purchasing, storing, and standby; S2: sedimentation and stratification, storing, and standby; S3: preheating liquid paraffin; S4: waiting for liquid paraffin to be measured; S5: introducing liquid paraffin, turning on fluorescent lamps and cooling water to make the temperature of a chlorination reactor constant, introducing chlorine, carrying out chlorination reaction, checking the relative density and chlorine content of the chlorinated paraffin, and stopping the chlorine when the requirements are met, turning off the fluorescent lamps and cooling water; S6: purifying waste gas, generating hydrochloric acid and oxygen; S7: storing oxygen; S8: storing hydrochloric acid solution; S9: degassing oxygen, and performing waste gas purification on the removed gas; S10: adding a pH regulator and stability; S11: washing, decompression, and dehydration to a water content of ≤2% to obtain a finished product; the invention can ensure that chlorine and liquid paraffin are fully contacted and reacted to generate chlorinated paraffin, avoid the problem of insufficient reaction, and improve the raw material utilization.

The utility model provides a chlorinated paraffin reaction kettle, which belongs to the technical field of reaction kettles and comprises a kettle body and a connecting unit, and the connecting unit comprises a fixed pipe, a sliding shaft and an ultraviolet lamp. The fixed pipe is positioned outside the kettle body, and one end of the fixed pipe is fixedly connected with the kettle body and communicated with the inside of the kettle body. The sliding shaft is slidably arranged in the fixing pipe in a penetrating mode and provided with a first threading hole penetrating through the sliding shaft in the axial direction of the sliding shaft. The ultraviolet lamp is located in the kettle body, and a power line of the ultraviolet lamp is used for penetrating through the first threading hole. According to the chlorinated paraffin reaction kettle provided by the utility model, the installation operation and wiping of the ultraviolet lamp are carried out outside the kettle body, so that the problem that the installation and wiping of the ultraviolet lamp are relatively inconvenient because the space in the kettle body is limited can be avoided.

The invention discloses a photo-thermal synergistic chlorinated paraffin preparation method, and belongs to the technical field of halogenated paraffins.The preparation method comprises the following steps of raw material refining, chlorination reaction, product refining and tail gas treatment. The method for refining the raw materials comprises the following steps: adding Lewis acid dispersion liquid into paraffin oil, stirring for 10-15 minutes, dehydrating tail gas discharged after primary falling film absorption through anhydrous calcium chloride, enabling the tail gas to be in full contact with the paraffin oil in a bubbling contact manner, controlling the temperature of a system to be 45-55 DEG C, stirring and pretreating for 30-40 minutes, and adjusting the pressure in the pretreatment process to be 0.035-0.045 MPa through the flow of the tail gas; the chlorinated paraffin preparation method optimizes the cyclic utilization of chlorine, improves the utilization rate of chlorine, reduces the chromaticity of a finished product, and improves the quality of the finished product.

A stirring shaft of a reaction kettle of the stabilizer adding device is of a hollow structure, a guide window is formed in the side of the part, located in the reaction kettle, of the stirring shaft, a sleeve is arranged in the stirring shaft in a sliding and sealing mode, and an output valve is arranged on the side of the sleeve and led out of the guide window. The top of the sleeve is connected with a rotary joint, a stabilizer is connected into the sleeve through the rotary joint and is transmitted to the output valve through the sleeve, and the sleeve is further connected with a vertical reciprocating driving mechanism which can drive the sleeve to drive the output valve to do vertical reciprocating motion. According to the stabilizer adding device for chlorinated paraffin dehydrochlorination, the sleeve can be driven to vertically reciprocate while the stirring shaft rotates, a stabilizer output by the output valve can be uniformly injected into a reaction kettle in the vertical direction, the dispersion efficiency of uniform dispersion of the stabilizer is improved, the stabilizing effect of the stabilizer on chlorinated paraffin is improved, and the service life of the stabilizer is prolonged. The product quality of the chlorinated paraffin is improved.

The invention relates to the technical field of reaction kettles, in particular to an automatic reaction kettle for chlorinated paraffin production. According to the technical scheme, the device comprises a reaction kettle assembly and an upper workbench assembly fixedly installed at the top end of the reaction kettle assembly, the top end of the upper workbench assembly is fixedly connected with four sets of glass hollow pipes, and bulbs used for light heating are arranged in the four sets of glass hollow pipes. According to the invention, the limiting baffle plate increases the contact between the chlorine feeding pipe and the reaction kettle assembly and the extrusion force for positioning the chlorine feeding pipe, so that the annular air bag lantern ring frame extrudes the positioning insertion rod to be in a central state all the time; the situation that due to the fact that the positioning insertion rod or the chlorine feeding pipe vibrates in the stirring process, the joint of the positioning insertion rod or the chlorine feeding pipe and the reaction kettle assembly is separated, and then chlorine leakage is caused by gaps, and positioning and leakage prevention of the positioning insertion rod and the chlorine feeding pipe are caused are reduced; therefore, a good chlorine leakage prevention measure is achieved, and meanwhile the service life of the device is prolonged.

The present disclosure relates to a process for bleaching wax; comprising, mixing the wax with a solvent to form a mixture; treating the mixture using a bleaching composition to obtain treated wax; and washing and drying the treated wax to obtain bleached wax; such that, color value of said bleached wax is reduced by at least 80%

The invention belongs to the technical field of photocatalytic reaction, and particularly relates to a photocatalytic reaction device for chlorinated paraffin production, which comprises a reaction barrel, a stirring mechanism, a crushing mechanism, an irradiation mechanism and a driving mechanism, the reaction barrel is in a barrel shape with an open top wall, and the top of the reaction barrel is detachably provided with a top cover; the stirring mechanism is movably arranged on the bottom wall of the top cover, is positioned in the inner cavity of the reaction barrel and is used for stirring the chlorinated paraffin solvent and the photocatalyst. Through the arranged stirring mechanism, multi-mode stirring can be achieved, the whole stirring blades can be driven to rotate, part of the stirring blades can also rotate around the second rotating shaft, the stirring effect is improved, and the reaction is promoted; a rotating cylinder and a rotating rod of the crushing mechanism rotate in opposite directions, and first crushing nails and second crushing nails are arranged in a staggered manner, so that sediments are crushed from two directions; the lifting ring of the irradiation mechanism ascends and descends in a reciprocating mode, the irradiation range of ultraviolet irradiation lamps is enlarged, the number of the lamps is reduced, meanwhile, the irradiation efficiency is guaranteed, and the photocatalytic efficiency is improved through reflective layers of the reaction barrel and the stirring blades.

The invention relates to oxidized paraffin, a preparation method thereof and application of the oxidized paraffin in preparation of emulsified wax, and belongs to the technical field of paraffin modification. The specific catalyst is used for catalyzing oxidation of the paraffin, the acid value and the saponification value of the prepared oxidized paraffin are higher, the oxidized paraffin is used as a paraffin raw material, the oxidized paraffin has more oxygen-containing groups and is easier to emulsify, and the emulsified paraffin obtained after emulsification is stable in property, smaller in particle size, better in dispersing performance and excellent in physical performance; wide application prospects are realized.

The present invention belongs to the field of catalysts, and specifically relates to a hydroisomerization catalyst, a preparation method thereof, and uses thereof. In the hydroisomerization catalyst provided by the present invention, by adjusting the large-pore silica-alumina molecular sieve, medium-pore silica-alumina molecular sieve, small-pore silica-alumina molecular sieve, and mesoporous molecular sieve to a specific ratio range, and adding amorphous silica-alumina, the pore size and acidity of the support can be regulated, thereby reducing the isomerization performance of the resulting catalyst while exhibiting relatively weak cracking catalytic performance, thereby controlling the isomerization and cracking degree of high-melting-point Fischer-Tropsch wax (melting point above 105°C), and having higher selectivity for the target product, which is conducive to the large-scale production of high-quality microcrystalline wax.

The invention discloses a preparation method for controlling viscosity and density of environment-friendly chlorinated paraffin, raw materials are C14-20 environment-friendly paraffin and liquid chlorine, and the environment-friendly chlorinated paraffin is prepared under a heating condition by a photocatalytic chlorination method. According to the method, a multi-kettle continuous chlorination process is adopted, a raw material for synthesizing the environment-friendly chlorinated paraffin is from n-alkanes with the carbon chain length of C14-20, the environment-friendly chlorinated paraffin synthesized by the C14-20 n-alkanes is a mixture, and the viscosity and the density of the chlorinated paraffin-52 product are different according to the change of the proportion of each component in the production process of the raw material n-alkanes C14-20. The viscosity and density of the environment-friendly chlorinated paraffin can be accurately regulated and controlled through accurate blending of raw material components, fine control of the reaction process and optimization of product aftertreatment, the requirements that the viscosity ranges from 280 to 360, the density ranges from 1.25 to 1.27, the content of C13 and below chlorinated paraffin is smaller than 1000 ppm, the chromaticity is smaller than 50, and the product quality reaches the industry leading level can be met.

The present disclosure refers to systems and methods for producing hydrogen among other products. In some embodiments the methods comprise sequentially conducting a cracking step in a fixed bed mode and conducting a flowing step in a fluidized bed mode. Such sequential processes may result in a number of advantages including, for example, regenerating the catalyst during the fluidized bed mode in a manner such that beneficial heat is generated for use in the endothermic cracking step.

The utility model relates to the technical field of paraffin reactors, in particular to a medium-long carbon chain chlorinated paraffin reactor. The reactor comprises a reactor main body, the bottom of the reactor main body is fixedly connected with a support frame, the top of the reactor main body is fixedly communicated with an air inlet pipe, the lower surface of the reactor main body is fixedly communicated with an exhaust pipe, the inner wall of the reactor main body is provided with a cooling assembly, and an inner cavity of the reactor main body is provided with a stirring cooling assembly. Paraffin and chlorine in the reactor can be driven to be fully mixed through rotation of the stirring rod, meanwhile, the first connecting pipe is responsible for introducing cooling liquid into the stirring rod, the second connecting pipe is used for flowing out of the cooling liquid, a complete cooling liquid circulation channel is formed, and meanwhile the stirring rod is communicated with the stirring cooling pipeline. Cooling liquid can exchange heat with surrounding high-temperature paraffin through the pipe wall of the stirring cooling pipeline, so that the temperature of the paraffin in the areas is effectively reduced.

The utility model relates to a chlorination reaction device for chlorinated paraffin production in the field of chlorinated paraffin production, which is characterized in that a heat exchange interlayer is arranged outside a kettle body, hollow cavities are arranged in a stirring shaft and an anchor frame type stirrer, an air inlet is arranged at the top end of the stirring shaft and is connected with a chlorine supply pipe through a rotary joint, and a plurality of air outlets are arranged on the wall of the anchor frame type stirrer. The kettle cover is provided with a stirring motor, the side wall of the kettle body is connected with a paraffin feed port, the kettle bottom is provided with a discharge port, and a circulating discharge port in the side wall of the kettle body is connected with a material returning pump and a circulating cooler and is connected with a circulating feed port through a Venturi ejector; the kettle cover is provided with an ultraviolet lamp tube mounting opening, a tail gas exhaust opening and a circulating extraction opening connected to a negative pressure opening of the Venturi ejector, and the side wall of the middle part of the kettle body is provided with a plurality of transparent glass windows for mounting ultraviolet spotlights. The reaction kettle combines a thermal chlorination method and a photocatalytic chlorination method, so that the chlorination reaction is more thorough, the chlorine content in tail gas is reduced, the chlorine utilization rate is increased, and the chlorination reaction efficiency is improved.

The utility model relates to the technical field of paraffin processing, in particular to a steam distribution device of a chlorinated paraffin production line, which not only can filter and clean impurities in water to prevent the impurities from influencing the heating efficiency, but also can meter the separately conveyed steam to ensure the requirements of each pipeline. Comprising a heating mechanism; the device further comprises a water conveying mechanism, a stirring mechanism, a gas distribution mechanism and a cleaning mechanism, the water conveying mechanism is installed on the heating mechanism and conveys clear water into the heating mechanism conveniently, the stirring mechanism is installed on the heating mechanism and stirs the clear water, and the gas distribution mechanism is installed on the stirring mechanism body and pumps out steam to be distributed and conveyed. The cleaning mechanism is installed on the heating mechanism and facilitates discharging of impurities in the device.

The invention discloses a skid-mounted integrated device for the production of unpowered circulating continuous chlorinated paraffin, which relates to the technical field of chemical equipment. The technical solution includes: a chlorination reaction tower, which includes two chlorination reaction units and a gas-liquid separation unit connected in sequence from bottom to top. A driving rod is provided through the chlorination reaction tower. An air outlet mechanism is installed at the upper end of the chlorination reaction tower. An upper valve plate is provided in the air outlet mechanism. Lifting the upper valve plate can control the opening and closing of the air outlet mechanism. The upper valve plate is installed at the top of the driving rod. An air intake mechanism is installed at the lower end of the chlorination reaction tower. A lower valve plate is provided in the air intake mechanism. Lifting the lower valve plate can control the opening and closing of the air intake mechanism. The lower valve plate is installed at the bottom of the driving rod. Through the above-mentioned structural arrangement, the present invention effectively controls the air pressure in the chlorination reaction tower, prevents the internal pressure from continuously increasing, and eliminates safety hazards.

The utility model discloses a chlorination reactor which comprises a reaction tank, a feed port is formed in the top of the reaction tank, and a discharge port is formed in the bottom; a stirring mechanism is arranged in the reaction tank; a plurality of air inlets are formed in the bottom of the reaction tank; a gas distributor is fixed on the gas inlet; the gas distributor is used for introducing gas into the reaction tank and enabling the gas to be uniformly distributed into liquid in the reaction tank to react with the liquid. According to the chlorination reactor disclosed by the utility model, the gas distributor is arranged at the bottom of the reaction tank, so that gas is uniformly distributed around after entering the reaction tank and reacts with liquid, the stirring structure is improved, and under the action of the stirring component, the mixing degree between gas and liquid phases is improved, the gas and liquid reaction in the reaction tank is more sufficient, and the reaction efficiency is improved. Finally, the reaction efficiency and the product quality and purity are improved.

The present invention relates to a preparation device for chlorinated paraffin, and belongs to the technical field of chlorinated paraffin preparation. It comprises a kettle body, wherein a feed pipe, an air inlet pipe and an exhaust pipe are provided through the top of the kettle body, and a discharge pipe is provided through the bottom of the kettle body, and control valves are provided on the feed pipe, the air inlet pipe, the exhaust pipe and the discharge pipe; a fluorescent lamp is provided at the top of the inner wall of one side of the kettle body, and is used for the illumination reaction during preparation; a stirring mechanism is provided in the kettle body and is used for mixing and stirring the materials; and a preparation method is also disclosed. The present invention not only increases the time for cooling water to flow through, but also achieves the function of stirring by designing the water inlet conduit and the water outlet conduit to be movable and rotatable, and cooperates with the setting of the pipe bending, so as to achieve the function of stirring, and the cooling and stirring are combined in the design, which reduces the generation of parts to a certain extent; at the same time, the pipe rotates with the stirring shaft, avoiding the situation where there is a certain temperature difference between the center and the periphery of the traditional kettle body, and improving the accuracy of temperature control.

The invention relates to the technical field of phase change materials, in particular to high-enthalpy-value phase change wax based on olefin hydrogenation sweating separation. The olefin raw materials comprise 10 olefin, 12 olefin, 14 olefin, 16 olefin, 18 olefin, 20 olefin, 22 olefin, 24 olefin, 26 olefin, 28 olefin, 30 olefin, C20-C24 mixed olefin, 26-28 mixed olefin and expanded graphite. Each olefin is subjected to hydrogenation reaction to prepare 10 alkane, 12 alkane, 14 alkane, 18 alkane, 20 alkane, 22 alkane, 24 alkane, 26 alkane, 28 alkane, 30 alkane, C20-C24 mixed alkane and 26-28 mixed alkane, and expanded graphite is added. A product obtained by hydrogenation of C20-C24 and 26-28 alkanes is subjected to sweating separation to obtain the phase change wax rich in 20 alkanes, 22 alkanes, 24 alkanes, 26 alkanes and 28 alkanes. All alkanes are added into the expanded graphite to prepare the high-thermal-conductivity phase change wax with melting points of-29 DEG C,-9 DEG C, 5 DEG C, 18 DEG C, 28 DEG C, 36 DEG C, 43 DEG C, 50 DEG C, 56 DEG C, 61 DEG C and 65 DEG C, and the thermal conductivity coefficient is increased to 1.5-15 W.m.K. The heat-conducting property is improved, and the industrial production feasibility is achieved.

The application belongs to the technical field of polymer material preparation, and particularly relates to maleic anhydride functionalized long-chain alkane shown in formula I and a preparation method and application thereof. The maleic anhydride functionalized long-chain alkane provided by the application has an extremely similar structure to ASA, and thus exhibits the same performance. The application adopts alkane as a raw material to prepare the maleic anhydride functionalized long-chain alkane, and the raw material is sufficient and low in price. In addition, conventional ASA needs to be subjected to double bond isomerization to transfer the reaction site of maleic anhydride from a terminal position to a non-terminal position. The application adopts a free radical path to synthesize the maleic anhydride functionalized long-chain alkane, and a non-terminal free radical (a double-substituted free radical) is more stable than a terminal substituent (a single-substituted free radical), so that the reaction site is preferentially on the non-terminal position. Therefore, the synthesis process provided by the application is simpler.

The invention relates to the technical field of multifunctional lubricants, and discloses a zinc stearate lubricant composition for polyvinyl chloride processing and a preparation process thereof, specifically, trialkyl citrate, p-hydroxybenzoic acid, mercaptoethylamine and paraformaldehyde are taken as raw materials, esterification reaction and Mannich condensation reaction are carried out, and the zinc stearate lubricant composition for polyvinyl chloride processing is obtained. The thiolated benzoxazine type citric acid trialkyl ester is prepared by adding the thiolated benzoxazine type citric acid trialkyl ester; the preparation method comprises the following steps: based on a substitution reaction mechanism, preparing functionalized chlorinated paraffin by taking thiolated benzoxazine trialkyl citrate and chlorinated paraffin as raw materials; the functional chlorinated paraffin and zinc stearate are premixed, and the zinc stearate lubricant composition is prepared through an extrusion granulation process. The zinc stearate lubricant composition prepared by the invention is used as a raw material in polyvinyl chloride processing, so that a polyvinyl chloride product prepared from the zinc stearate lubricant composition has the beneficial technical effects that the lubricating property, the plasticizing effect and the thermal stability are remarkably improved.