46 results about "White oil" patented technology

The utility model relates to the technical field of waste oil regeneration, and discloses a waste white oil alkali washing device which comprises a tank body, a heating assembly is installed on the periphery of the tank body, a sleeve, a servo motor and a feeding pipe are sequentially and fixedly connected to the top of the tank body from left to right, and a liquid discharging pipe is fixedly connected to the bottom of the tank body. A stirring assembly is installed in the tank body, a top ring is slidably connected to the middle of a sleeve, a filtering barrel is fixedly connected to the bottom of the top ring, a connecting pipe is fixedly connected to the top of the top ring, an elastic assembly is installed in the middle of the top ring, a clamping block is slidably connected to the middle of the top ring, and a clamping groove is formed in the middle of the sleeve; and the middle part of the sleeve is slidably connected with a push rod. According to the utility model, firstly, waste white oil is input through the connecting pipe, and larger impurities can be filtered under the action of the filtering barrel at the bottom of the connecting pipe, so that the mixing efficiency of the waste white oil and a sodium hydroxide aqueous solution is ensured, and the impurities are prevented from blocking the pipeline.

The invention belongs to the technical field of drilling fluid chemistry in the petroleum industry, and particularly relates to a high-temperature-resistant viscosity reducer as well as a preparation method and application thereof. The preparation method of the high-temperature-resistant viscosity reducer provided by the invention comprises the following steps: (1) adding vegetable oleic acid and polyethylene polyamine into a reactor, and reacting at a first temperature under the protection of inert gas to obtain a first intermediate; (2) reducing the temperature of the first intermediate to a second temperature, slowly adding anhydride, then heating to a third temperature, and continuously reacting to obtain a second intermediate; and (3) reducing the temperature of the second intermediate to room temperature, adding trimethylchlorosilane, reacting at a fourth temperature, and adding white oil for dilution after the reaction is finished, thereby obtaining the high-temperature-resistant viscosity reducer. The high-temperature-resistant viscosity reducer disclosed by the invention has an excellent temperature-resistant effect, and the viscosity reduction effect of the high-temperature-resistant viscosity reducer on an oil-based drilling fluid can still reach 20% or above after the high-temperature-resistant viscosity reducer is aged at 180 DEG C for 16 hours.

The application discloses a feeding device in a TPE modified plastic material production process, and relates to the technical field of plastic production. The feeding device comprises a hopper main body, a butt joint ring for connecting materials, and a dispersion assembly assembled in the inner cavity of the butt joint ring. The dispersion assembly comprises a power rod and a conical plate I for receiving the powder falling from the butt joint ring, and a spraying part for spraying and wrapping the powder during the falling process. The dispersion assembly drives the conical plate I to make synchronous extension and rotation movement through the power rod, so that the powder falling from the hopper main body is uniformly dispersed along the conical surface of the conical plate I, and the dispersed single powder is sprayed with white oil synchronously through the spraying part. The powder particles can be more fully and uniformly contacted with the white oil, the formation of the wet outside and dry inside lumps is avoided, the product performance fluctuation is reduced, the lump accumulation in the hopper is avoided to cause the bridging and blocking, and the continuity of production is ensured.

The invention is a process for producing a white oil having an initial boiling point of at least 300° C., the process comprising a step of catalytically hydrogenating a hydrocarbon feedstock at a temperature of from 80 to 190° C., at a pressure of from 50 to 160 bars, a liquid hourly space velocity of 0.2 to 5 hr−1 and an hydrogen treat rate up to 200 Nm3 / ton of feed, the hydrocarbon feedstock having a sulphur content of less than 10 ppm by weight, an initial boiling point within the range from 150 to 350° C. and a final boiling point within the range from 350 to 550° C.

The invention relates to a method for detecting the content of white oil in polystyrene, which is applied to the field of polystyrene resin detection and comprises the following steps: S1, weighing a polystyrene sample, putting the polystyrene sample into a conical flask with a plug, adding methylbenzene into the conical flask with the plug, and oscillating and dissolving; s2, putting the conical flask with the stopper into a warm water bath, and meanwhile, adding a precipitator into the conical flask with the stopper to precipitate a polymer; s3, adding a precipitant while shaking when the precipitant is dropwise added, and quickly cooling after the precipitant is completely precipitated; s4, filtering by using suction filtration equipment, collecting the filtered solution, concentrating to obtain a concentrated sample solution, and weighing the concentrated sample solution; and S5, sucking a proper amount of concentrated sample liquid by using a microsyringe, then injecting the concentrated sample liquid into a chromatographic instrument, and determining, by accurately controlling precipitation conditions and a separation process, the problems of white oil wrapping by precipitation, filter membrane blockage and insufficient detection limit in a traditional method are solved, and high-precision and high-repeatability white oil content detection is realized.

The application discloses a production method of a low-cost anti-fogging black sunscreen preservative film, belongs to the technical field of anti-fogging film materials, and utilizes kerosene or heavy oil to generate carbon black with heat through cracking under heating and oxygen deficiency; carbon black particles are attached to the surface of the film; the carbon black particles are cooled and fixed due to the arrangement of a cold air blower above the film; the surface is difficult to be wetted, the anti-fogging effect is realized, the previous smoke generator is a smoke generator generated by the evaporation of mineral oil; the previous smoke bomb is special for fire drill; whether a sealed container such as a boiler leaks and whether air circulates are detected; propylene glycol, white oil and the like are utilized to generate air mist by the smoke generator; the carbon black has certain adsorption; oily substances are adsorbed; the anti-fogging performance of the surface of the film is further enhanced; the operation method is simple; the air mist and the smoke are conveniently recycled; the production cost is low; the black color can be realized without additional black color master batches; the black color is realized at one time; the method can be used for the packaging of vegetables, fruits, flowers, sun exposure, picking and transportation.

The present application relates to a kind of preparation methods of veterinary white oil, comprising the following steps: crude oil is extracted A after normal pressure device and / or vacuum device;Extract A is extracted B after first group of reaction device;Veterinary white oil is extracted after at least one group X reaction device of extract B, the pressure speed ratio of the X reaction device is 1.8 mbar.s / t-5.4 mbar.s / t, the pressure ratio is 2.94×10^(‑5) mbar / ℃-10.17×10^(‑5) mbar / ℃.The purpose of the present application is to overcome the defects existing in the prior art, provide a kind of high quality veterinary white oil with high effectiveness, high safety, fast absorption speed, little local irritation to injection.

This invention relates to the field of industrial white oil processing, and more particularly to a container for holding light white oil, comprising a tank body. A replenishment pipe with a valve is fixed to the top of the tank body. A connecting groove is fixed to one side of the bottom of the tank body, and a metering tube is fixed to the end of the connecting groove. A metering column is installed inside the metering tube, and multiple metering slots are arranged around the metering column. A connecting shaft is fixed to the top of the metering column, passing through the metering tube and rotatably connected to it. An oil outlet pipe with a valve is also fixed to the bottom of one side of the metering tube. A push plate, cooperating with the metering slots, is installed inside the metering tube above the oil outlet pipe. A push rod is fixed to the top of the push plate, passing through the metering tube and slidably connected to it. This device can discharge a certain amount of white oil from the oil outlet pipe, effectively avoiding white oil waste.

The light white oil production filling device comprises a main body unit and a filling unit, the main body unit comprises a machining table, a vertical plate is fixed to the top of the machining table, a transverse plate is fixed to the top of the vertical plate, an oil storage tank is fixed to the top of the transverse plate, supporting legs are fixed to the four corners of the bottom of the machining table, and a storage barrel is placed on the machining table; the filling unit comprises an oil conveying hard pipe, and an oil conveying hose is fixed to and communicated with the oil conveying hard pipe. A second motor is started to drive a screw rod to rotate reversely, so that a moving plate and an oil conveying hard pipe are driven to move upwards, and when the storage barrel is about to be full of light white oil, a third motor is started to drive a second rotating rod and an oil baffle plate to rotate, so that the oil baffle plate shields part of an oil leakage hole, and a small amount of light white oil still falls into the storage barrel from the oil leakage hole; in the process, a small amount of light white oil is added, the distance between the bottom of the oil conveying hard pipe and the top of the storage barrel is controlled to be small, and the situation that the light white oil is sputtered is avoided.

The invention discloses a preparation method of a soft soil similar material meeting the requirements of transparency and similarity, which ensures the transparency of the material by accurately controlling the preparation of mixed oil, calibrating an Abbe refractometer and standardizing the mixing ratio of n-dodecane to 15 # white oil and the stirring and standing process; the white carbon black dispersion and quartz sand mixing and stirring processes are strictly standardized, and it is guaranteed that the mechanical properties such as the material weight and the internal friction angle are similar to those of real soft soil. Meanwhile, strict operation standards are set in the steps of model filling, air exhaust saturation, sample sampling and the like, the environment and measuring tool conditions are controlled, and parameters and reserved samples are completely recorded. The method effectively solves the problems that transparency and mechanical properties of a traditional material are difficult to balance, and configuration lacks accuracy and repeatability, and provides a reliable soft soil similar material preparation means for geotechnical engineering research and engineering practice.

The utility model relates to the technical field of online switching of filter elements, and discloses online switching equipment for white oil filter elements of an extruder, which comprises a connecting column, a connecting component is arranged on the outer wall of the connecting column, the connecting component is used for connecting other pipelines, a pipeline component is arranged on the outer wall of the connecting column, and the pipeline component is used for connecting other pipelines. And the pipeline assembly is used for controlling the problem of air in the filtering tank and comprises a first connecting pipe, one end of the first connecting pipe is fixedly connected to the outer wall of the connecting column, the filtering tank is fixedly connected to one end of the first connecting pipe, and a bypass valve is fixedly connected to one end of the filtering tank. According to the utility model, air in the filtering tank is firstly exhausted through the exhaust port, exhausted through the T-shaped connecting pipe, exhausted through opening the bypass valve, and replaced by closing the first exhaust control valve, so that the effect of switching the filter elements on line is achieved, the problem that the product quality is influenced by adding a filter screen traditionally is solved, and the stability is improved.

The invention belongs to the technical field of plugging agents, and particularly relates to a high-temperature-resistant plugging anti-collapse agent for drilling fluid and a preparation method of the high-temperature-resistant plugging anti-collapse agent. The high-temperature-resistant plugging anti-collapse agent is prepared from the following raw materials in parts by mass: 50 to 120 parts of water; 110 to 380 parts of polyolefin; 100 to 210 parts of hydrogen; 50 to 130 parts of silicate; 60 to 150 parts of weak organic acid; 60 to 140 parts of white oil; 38-90 parts of an alcohol amine compound; 50 to 120 parts of polyether polyol; and 12-32 parts of an alkaline regulator. The invention further discloses a preparation method of the drilling fluid, through the synergistic effect of all the components, the drilling fluid cannot be decomposed under the high-temperature complex stratum condition, stratum collapse and instability of a water-sensitive shale stratum are effectively prevented, and safe and smooth drilling operation is guaranteed.

A storage tank for white oil finished products comprises a storage tank body, the storage tank body is a horizontal tank body, a white oil feeding connector and a manhole are formed in the top of the storage tank body, and the storage tank body comprises an upper cylindrical part, a lower conical hopper-shaped part and a bottom hollow semi-ellipsoidal part which are integrally formed. The volume of the bottom hollow semi-ellipsoidal part is 0.5% of the volume of the storage tank body; a storage tank supporting frame body is arranged below the storage tank body, and the storage tank supporting frame body comprises a top rectangular frame fixedly connected with the upper cylinder part and a group of supporting leg parts symmetrically arranged on the two sides of the top rectangular frame. The white oil storage tank has the advantages that water can sink to the bottom and be discharged conveniently, and the quality of white oil products is prevented from being influenced. And the follow-up maintenance and cleaning difficulty of the storage tank for the white oil finished product is greatly reduced.

The utility model relates to the technical field of white oil production, in particular to an industrial white oil production stirring mechanism which comprises a tank body, supporting legs, a feeding hopper, a discharging hopper and a stirring device, the supporting legs are fixedly connected with the bottom surface of the tank body, the feeding hopper is connected with the top surface of the tank body in a penetrating mode, and the discharging hopper is connected with the bottom surface of the tank body in a penetrating mode. The stirring device is arranged on the surface of the tank body and comprises two first rotating shafts, the two first rotating shafts are rotatably connected with the inner wall of the tank body, a fixing frame is fixedly connected to the surface of the top of the tank body, a motor is fixedly installed on the surface of the fixing frame, and the output end of the motor is fixedly connected with one end of any first rotating shaft; the surface of the first rotating shaft is fixedly connected with a first stirring rod, and the inner surface of the tank body is fixedly connected with two conveying bins. According to the utility model, by arranging the stirring device, raw materials at the bottom and raw materials at the top can be mixed and stirred, so that the time required for fully mixing the raw materials is shortened, and the usability of the equipment is effectively improved.

A white oil filtering and storing system comprises a blending device and a storing device, the blending device comprises a blending kettle body (21), a raw material feeding port (2s2) is formed in one side of the top of the blending kettle body (21), a finished white oil outlet (40) is formed in the bottom of the blending kettle body (21), and the raw material feeding port (22) is connected with an outlet of a turbine dynamic pipeline mixer (23) through a bent pipe; the device has the advantages of solving the stirring dead angle, realizing uniform mixing and improving the quality stability of the finished white oil product. And through cooperation of the double-layer storage tank and the leakage pool, leakage is effectively prevented, and pollution to the environment after leakage is reduced.

The present invention provides a suspension emulsion for fracturing fluid, comprising: 40-60 parts by weight of white oil; 30-60 parts by weight of a thickener; 1-5 parts by weight of a nonionic emulsifier; 1-3 parts by weight of bentonite; 0.5-2 parts by weight of a suspending agent; 0.5-2 parts by weight of a dispersant; and 0.1-1.2 parts by weight of a cosolvent. Compared with the prior art, the suspension emulsion for fracturing fluid provided by the present invention has good suspension stability and a fast swelling rate. It can be prepared and injected on-site without residual liquid, thus avoiding waste of fracturing fluid and reducing transportation costs and tank cleaning fees. Furthermore, by reducing the amount of bentonite used, damage to the reservoir is reduced.

The application relates to the technical field of plastic rubber particles, and discloses an antibacterial TPE plastic rubber particle and a preparation method thereof. The antibacterial TPE plastic rubber particle comprises the following raw materials in parts by weight: SEBS 50-60 parts, polypropylene 20-30 parts, white oil 20-30 parts, sodium carboxymethyl cellulose 5-10 parts, antioxidant 1010 0.5-1 part, coupling agent KH550 1-1.5 parts, carbon fiber 2-3 parts, modified antibacterial agent 0.5-1 part, and modified light stabilizer 2-4 parts. In the application, the modified antibacterial agent is prepared through multiple mechanisms to synergistically resist bacteria, can inhibit bacterial reproduction and metabolism, and reduces the pollution risk caused by the breeding of microorganisms; the modified light stabilizer is prepared, can efficiently absorb ultraviolet rays and block the photoaging chain reaction, effectively resists the erosion of ultraviolet rays on the plastic, and prolongs the service life of the product.

The present invention discloses an oil-based drill cuttings environmental protection treatment agent, a preparation method and application thereof, and belongs to the field of environmental protection treatment of petroleum drilling. The oil-based drill cuttings environmental protection treatment agent of the present invention comprises: 10 to 40 parts of n-hexane, 10 to 40 parts of cyclohexane, 10 to 40 parts of isohexane, 0 to 20 parts of polydimethylsiloxane, and 5 parts of N-methylpyrrolidone. The preparation method of the present invention comprises: preparing each raw material by volume, mixing them evenly, and obtaining the product. The method for desorbing organic pollutants from oil-containing drill cuttings by the oil-based drill cuttings environmental protection treatment agent of the present invention comprises: taking oil-based drill cuttings, adding the oil-based drill cuttings environmental protection treatment agent, leaching under stirring conditions, and then solid-liquid separation, drying the solid phase, and obtaining drill cuttings desorbed of organic pollutants. The oil-based drill cuttings environmental protection treatment agent of the present invention can be used for diesel-based drill cuttings and white oil-based oil-containing drill cuttings, has good safety, can effectively attach various organic pollutants on oil-containing drill cuttings, and has a high recovery rate.

The invention relates to the technical field of care products, in particular to a white oil nano-emulsion, a preparation process and application of the white oil nano-emulsion in personal care products. The emulsion comprises the following raw materials: white oil with the viscosity of 5-30cSt, a compound emulsifier, a co-emulsifier, a water phase regulator and the balance of deionized water. According to the invention, through molecular design of single white oil and a specific compound emulsifier, and in combination with a process path of sectional temperature control and stepped energy input, a synergistic effect is achieved from two aspects of molecular interface behavior and macroscopic preparation process; the problems of sticky skin feeling, easy layering and the like caused by large particle size and unstable interface of the traditional white oil emulsion are fundamentally solved, and the white oil nano-emulsion which is high in stability, excellent in refreshing skin feeling, good in mildness and suitable for large-scale production is successfully prepared.

The invention relates to the technical field of petrochemical product analysis, in particular to a method for measuring n-alkane content and carbon number distribution of white oil based on gas chromatography-mass spectrometry, which comprises the following steps: carrying out gas chromatography-mass spectrometry detection on a white oil sample to obtain total ion flow and mass spectrometry data; determining retention time and peak area of n-alkanes with different carbon numbers in the total ion chromatogram according to the total ion current and the mass spectrum data; and according to the retention time and the peak area, obtaining the n-alkane content in the white oil sample, the proportion of each carbon number interval and the carbon number distribution. The separation effect is good, the test result is accurate and reliable, the content and carbon number distribution of the n-alkanes in the C12-C34 carbon number interval can be measured, a mass spectrum detector is used, the carbon number distribution interval defining accuracy is improved, a standard sample is not needed for comparison, the detection process is convenient and rapid, and application and popularization are facilitated.

The application discloses a preparation method of a water-in-oil emulsion type defoaming agent for shale gas exploitation, which comprises the following steps: adding 32# industrial grade white oil into a beaker, adding yellow block-shaped microcrystalline wax, heating to 70 DEG C to dissolve the microcrystalline wax, adding Span 80 after uniform mixing and stirring, keeping constant temperature magnetic stirring for 10 min, keeping stirring at 70 DEG C for 30 min, adding tertiary distilled water, continuing stirring for 60 min, and finally adding 2g of 5% PVA water solution to obtain the water-in-oil emulsion type defoaming agent for shale gas exploitation. The surface active agent generated after starch modification is used to treat the surface groups, so that the silane groups are attached to the wax surface with low surface energy, are wrapped on the outer surface of the raw material through hydrogen bond or electrostatic force, the hydrophobicity is increased, the surface tension is reduced, and the defoaming purpose is achieved at the gas-liquid interface. The silicon grease material is compounded in the later stage, the silicon-containing groups can be better adsorbed on the outermost layer of the raw material, so that the defoaming is more helpful, and the defoaming rate and defoaming speed are improved.

This invention relates to the field of white oil recovery technology and proposes a white oil recovery device, including a housing, rotating discs, auxiliary rollers, a white oil adsorption section, a rotating section, a pipeline assembly, an oil suction component, and an adsorption and cleaning section. The housing has an outlet and an inlet at its front and rear ends, respectively. Two rotating discs are symmetrically arranged through the housing at both ends and rotate in coordination with it. Two auxiliary rollers are symmetrically arranged at the inlet of the housing. The white oil adsorption section is installed between the rotating discs, and the rotating section is located at one end of the housing. The pipeline assembly is installed at the end of the white oil adsorption section away from the rotating section. The oil suction component includes an oil suction section and a buffer section. The oil suction section is installed on the pipeline assembly, and the buffer section is installed inside the oil suction section. The adsorption and cleaning section is installed through the rotating disc near the rotating section. This technical solution solves the problems of inconvenient white oil recovery and low recovery efficiency in existing technologies.

The invention provides a method for detecting white oil and application thereof, and relates to the technical field of biologication.The method for detecting the white oil comprises the steps that the conditions of gas chromatography are set as follows: the temperature of a sample inlet is 300-320 DEG C; the temperature of the detector is 310-330 DEG C; the initial temperature is 150 DEG C, the temperature is maintained for 2 minutes, then the temperature is raised to 310 DEG C at the rate of 5 DEG C per minute, and the temperature is maintained for 10 minutes; the flow rate of sample introduction is 1.0 mL / min, and split-flow sample introduction is adopted. According to the method, the white oil is detected by adopting the gas chromatography, the method for detecting the white oil, which is rapid, stable and good in repeatability, is established by adopting specific gas chromatography conditions, the components of the white oil can be effectively separated, the area percentage of each component can be measured, the carbon chain composition of each white oil can be more rapidly and intuitively compared according to the detection result, and the detection result is more accurate. Furthermore, the key technical problem of quality control of the white oil raw material for injection of poultry vaccines can be solved.

The utility model provides a dichloromethane tail gas absorption device, which belongs to the technical field of dichloromethane tail gas absorption and comprises a bottom plate, the upper end face of the bottom plate is fixedly connected with a white oil absorption tower, the upper end face of the white oil absorption tower is fixedly connected with a first bearing, and the inner side wall of the inner ring of the first bearing is fixedly connected with a rotating pipe. The bottom end of the rotating pipe penetrates through the upper end face of the white oil absorption tower and extends into the white oil absorption tower, a spline shaft is slidably connected into the rotating pipe, and a stirring shaft is fixedly connected to the bottom end of the spline shaft. Through the arrangement of the first bearing, the rotating pipe, the spline shaft, the stirring shaft, the stirring paddle, the turbulent flow disc and the power mechanism, white oil is stirred in a reciprocating lifting mode, a gas-liquid interface boundary layer can be broken through stirring, the contact area is increased, dichloromethane molecules are accelerated to diffuse into the white oil, the absorption efficiency is improved, and the service life of the white oil is prolonged. The problem of low dichloromethane absorption efficiency caused by white oil standing in the prior art is solved.

The utility model relates to a white oil refining tank, it includes the refining tank body, still includes the combination mixing mechanism who sets up before the refining tank body and sets up the bag filter behind the refining tank body, the combination mixing mechanism includes setting up the top of the refining tank body and the turbine dynamic pipeline mixer and SK type static mixer who connect gradually, the two feed ends of turbine dynamic pipeline mixer are connected white oil delivery pipe and white clay feed pipe respectively, the discharge end of turbine dynamic pipeline mixer is connected with the import end of SK type static mixer, and the export end of SK type static mixer is connected with the feed port of the refining tank body through the elbow pipe. The utility model has the advantages that: the combination mixing mechanism is set up before the refining tank body, and the mass transfer efficiency of white oil and white clay is improved through the turbine dynamic pipeline mixer and SK type static mixer who connect gradually, and the subsequent refining efficiency is effectively improved.

The invention discloses an open hole segmented well completion pipe string capable of achieving full open hole section natural productivity and a using method of the open hole segmented well completion pipe string, and belongs to the technical field of oil and gas field downhole tools and technologies. Organic saline water, white oil or clear water can be displaced to the position above the suspension well completion integrated packer, and the equivalent density of the whole well after fluid displacement is not lower than that before fluid displacement, so that it is guaranteed that the fluid in a shaft has enough density to balance the formation pressure. A well completion integrated packer is hung through independent setting, and a switchable sliding sleeve is opened, so that a safety barrier for displacing fluid of a back-inserting tubular column section and natural blowout of a full-open-hole section is constructed; after the full open hole section natural blowout test, accurate control and management of each reservoir section are achieved by setting the open hole packer and closing the openable and closable sliding sleeve, and respective transformation of each reservoir section is achieved by operations such as opening the fracturing sliding sleeve step by step through a ball or a special opening tool (aiming at the openable and closable sliding sleeve), so that the reservoir transformation effect is improved.

The present application belongs to the field of agricultural product processing and preservation technology, and specifically relates to a chitosan-white oil-based nano bacteriostatic emulsion type egg film coating preservative as well as a preparation method and application thereof. The preservative is composed of water, chitosan, white oil, acetic acid, Tween 80, epsilon-polylysine hydrochloride and lauroyl arginine ethyl ester hydrochloride; wherein the mass fraction of chitosan is 0.3% to 0.75%, the mass fraction of white oil is 25% to 40%, the mass fraction of acetic acid is 1.2% to 1.5%, the addition amount of Tween 80 is 5% to 25% of the mass of white oil, the mass fraction of epsilon-polylysine hydrochloride is 0.2%, the mass fraction of lauroyl arginine ethyl ester hydrochloride is 0.2%, and the rest is water. The preservative has the outstanding advantages of safety and degradability, high bacteriostatic efficiency, stable film formation and adaptability to industrialization, and achieves the purpose of maintaining the freshness and nutritional quality of eggs.

This invention provides a method for preparing high-viscosity white oil, comprising the following steps: mixing distilled dewaxed oil from a reduced-density 4mm distillation line, dewaxed oil from a reduced-density 4mm distillation line, and hydrocracking tail oil, and performing a hydrocracking reaction to obtain a first oil product; subjecting the first oil product to a first atmospheric distillation to obtain a first bottom fraction; subjecting the first bottom fraction to an isomerization dewaxing reaction and a hydrorefining reaction to obtain a second oil product; subjecting the second oil product to a second atmospheric distillation to obtain a second bottom fraction; subjecting the second bottom fraction to isomerization dewaxing and vacuum distillation to obtain a third top fraction, a third side fraction, and No. 100 industrial white oil (II), respectively. This invention specifically adjusts the depth of hydrocracking, isomerization, and supplementary refining reactions to overcome changes in sulfur content, aromatics, and polycyclic aromatic hydrocarbons caused by variations in the properties of the raw materials, thereby improving the performance of the obtained white oil and pioneering an innovative production method for high-viscosity white oil.

The present application relates to the field of petroleum chemical industry, disclose a kind of trace high concentration volatile organic compound recovery system and recovery method, the recovery system includes: gas collection part, jet, pressurizing pump, white oil storage tank and tail gas recovery system;Jet, pressurizing pump and white oil storage tank are connected by pipeline to form a circulation system, pressurizing pump is arranged between the circulation outlet of white oil storage tank and jet;The outlet of gas collection part is connected with jet, and the tail gas recovery system is connected to the gas outlet of white oil storage tank through the accumulator.The recovery system uses white oil as circulating medium, which can be reused and does not need to consider the anti-freezing problem of winter production, completely collects various forms of direct discharge atmosphere VOC in online analysis instrument, sampling point and other types, so that it is recycled or burned, and the device VOC emission problem is completely solved.

The utility model discloses a white oil combustion water heater, including water heater shell, the fire row of fixed connection in water heater shell, heat converter, smoke extractor and first controller, be provided with the heating disc in the fire row, and the fire row is connected with heat converter, and the air outlet of heat converter is connected with the air suction end of smoke extractor, the utility model discloses through first controller start oil pump, ignition device etc. equipment, white oil combustion sustained heat production, and heat converter passes the heat to nickel base alloy coil pipe, ensures water flow when can be heated stably, and oil injection mechanism is through the accurate control oil supply of second electromagnetic valve, guarantees the combustion intensity adaptation heating demand, and the atomizer atomizes white oil, and the atomized white oil is accurately sprayed to the heating disc through the oil pump atomizer, increases the contact area with the heating disc, and realizes sufficient combustion with the cooperation of electronic pulse ignition, and heat converter is closely connected with the fire row and coil pipe, can reduce the heat loss, ensures that the heat of white oil combustion is rapidly transferred to the water body, realizes rapid heating.