29results about "Petroleum wax refining" patented technology

A method of removing paraffinic wax from pyrolysis oil that includes flowing pyrolysis oil into a tank and reducing the temperature of the pyrolysis oil to a temperature that causes the paraffinic wax that is in solution in the pyrolysis oil to precipitate and form (1) paraffinic wax in solid form and (2) remaining pyrolysis oil in liquid form. The method further includes pumping the remaining pyrolysis oil from the tank to a first location. The method then involves heating the paraffinic wax in solid form to form paraffinic wax in liquid form and pumping the paraffinic wax in liquid form to a second location. In this way, the paraffinic wax and the remaining pyrolysis oil can be processed separately according to their respective properties.

The invention discloses a Y-type molecular sieve and a preparation method thereof, a catalyst and a preparation method thereof, and a Fischer-Tropsch wax hydrocracking method, and belongs to the technical field of chemical engineering. The method comprises the following steps: S1, mixing a first alkali source, a first aluminum source, a first silicon source, first water and a template agent to obtain a first mixed solution, and pre-crystallizing to obtain a seed crystal guiding agent; the pre-crystallization temperature is 15-35 DEG C, the pre-crystallization time is 24-60 hours, and the template agent is poly (diallyldimethylammonium chloride); s2, mixing a second alkali source, a second aluminum source, a second silicon source and second water to obtain mother liquor; mixing the guiding agent and the mother liquor to obtain initial gel; crystallizing the initial gel to obtain an alkali metal Y-type molecular sieve; and S3, mixing the alkali metal Y-type molecular sieve with an ammonium-containing solution, carrying out ammonium ion exchange treatment to obtain a first Y-type molecular sieve, and carrying out first roasting treatment to obtain a second Y-type molecular sieve. The particle size of the molecular sieve is smaller than 520 nm, and the silica-alumina ratio is larger than 6.5.

The invention discloses a wax recovery treatment method which comprises the following steps: stirring, dissolving and precipitating wax in a sodium hydroxide solution to obtain supernate; adding the supernatant into boric acid, stirring to obtain jelly, filtering the jelly, washing, and drying to obtain a dried substance; mixing and stirring the dried substance and methanol, and drying to obtain a wax solid substance; and purifying the wax solid with a distillation extract of petroleum ether. According to the method, impurities in the wax are effectively removed, and the recovery purity and quality of the wax are improved, so that the service life of the wax is prolonged, the production cost is reduced, and the aims of saving resources and protecting the environment are fulfilled.

The invention relates to the technical field of chemical production equipment, in particular to a refining device for chlorinated paraffin. The invention provides a refining device for chlorinated paraffin. The refining device comprises a supporting frame body, a degassing tank is fixedly mounted in the supporting frame body, a feeding pipe and an exhaust pipe are arranged at the top of the degassing tank, a discharging pipe is arranged at the bottom of the degassing tank, a motor is mounted on the supporting frame body, and an output shaft of the motor is connected with a stirring paddle extending into the degassing tank; a gas inlet cavity is formed in the lower part of the stirring paddle, the bottom of the degassing tank is fixedly connected with an annular box, and the stirring paddle penetrates through the annular box. The Venturi tube type compressed air bag is used for pressurizing inert gas, so that the inert gas overcomes the resistance of viscous liquid and forms fine bubbles, and the air-liquid contact area is increased; the stirring paddle is matched to drive the gas bag to rotate, so that bubbles are uniformly distributed, the retention time is prolonged, and the removal efficiency of impurities such as hydrogen chloride and chlorine is greatly improved; and the intermittent exhaust device can also avoid waste of gas which is not fully utilized due to continuous exhaust.

The utility model relates to the technical field of paraffin separation, in particular to a separation device for producing light liquid paraffin, which comprises a separation barrel, a conical barrel is fixedly connected to the bottom of the separation barrel, a crushing assembly for crushing wax crystals is arranged in the separation barrel, and the crushing assembly comprises a rotating shaft rotationally connected to the interior of the separation barrel. According to the wax crystal crushing device disclosed by the utility model, wax crystals continuously impact the crushing barrel through the arranged crushing assembly, so that large wax crystals are further promoted to be crushed into a plurality of small wax crystals, liquid wax attached to the wax crystals is promoted to fully overflow through the manner, and the wax crystals can be crushed into small wax crystals; meanwhile, later-stage wax crystal output is facilitated, the blockage condition is avoided, meanwhile, accurate temperature control is not needed by adopting a natural cooling mode, and the complexity in the production process is reduced.

The utility model relates to the field of cleaning devices, in particular to a device for cleaning light liquid paraffin, during operation, water and oil in a tank body of a liquid preparation tank are layered, the light liquid paraffin is located on the upper layer, water-phase liquid is located on the lower layer, and the water-phase liquid on the lower layer of the liquid preparation tank continuously flows out of a liquid outlet under the action of a peristaltic pump. The liquid in the tank is kept in a rotating state by virtue of a plurality of electric stirring paddles, the water-phase liquid can be fully contacted with the light liquid paraffin layer when flowing through the light liquid paraffin layer and then sinks into the lower layer by virtue of the rotation, and the oil phase and the water phase are completely layered after the water-phase liquid is fully circulated and is subjected to standing; water-phase liquid is discharged and discarded through the discharging pipe, then cleaned light liquid paraffin is sent out and collected, in the circulation process, compound impurities in materials can be effectively screened out through the filter screen cover arranged at the bottom of the limiting barrel, and the cleaning effect on the materials is effectively improved.

The present disclosure generally relates to methods for deoiling a hydrocarbon feed and to products formed therefrom. In an embodiment is provided a method of deoiling a feed that includes introducing a waxy feed and a deoiling solvent to a dilution chilling zone; mixing the waxy feed and the deoiling solvent in the dilution chilling zone at a temperature of from about 10° F. to about 30° F. to form a slurry; introducing the slurry to a filter zone, the filter zone comprising one or more filter stages, wherein a temperature of the slurry is from about 40° F. to about 75° F.; separating the wax from the oil and the deoiling solvent to form a wax cake in a first filter stage; and washing the wax cake in the first filter stage with the deoiling solvent to obtain a composition comprising a wax. In another embodiment is provided a composition comprising a wax.

The utility model relates to the technical field of separation devices, and discloses an oleic acid separation device which comprises a separation barrel, an observation window is fixedly connected to the front face of the separation barrel, a heating cavity is formed in the separation barrel, the interior of the device can be observed through the observation window, and the separation effect and the miscellaneous matter cleaning condition can be observed conveniently. And a heating cavity is arranged to heat the device. The device has the following advantages and effects that through the arrangement of the separation barrel, the stirrer and the hydraulic lifting column, a worker puts raw materials into the separation barrel, the heating cavity in the separation barrel can heat the raw materials, the stirrer stirs the raw materials, the scraping plate scrapes and brushes the interior of the separation barrel at the same time, and at the moment, oleic acid becomes gas; and when too much impurities are adhered to the stirrer, the hydraulic lifting column is started to lift the barrel cover to clean the impurities on the stirrer and the scraping plate, so that the effects of being convenient to disassemble, assemble and clean are achieved.

A method for removing paraffin wax from pyrolysis oil includes flowing the pyrolysis oil into a tank and reducing the temperature of the pyrolysis oil to a temperature that causes the paraffin wax in solution in the pyrolysis oil to precipitate, forming (1) the paraffin wax in solid form and (2) residual pyrolysis oil in liquid form. The method further includes pumping the residual pyrolysis oil from the tank to a first location. Next, the method includes heating the solid paraffin wax to form the liquid paraffin wax and pumping the liquid paraffin wax to a second location. In this way, the paraffin wax and the residual pyrolysis oil can be treated separately according to their respective properties.

The invention provides a process for preparing a hydrowax comprising the steps of: (a) providing a hydrocarbonaceous feedstock which contains more than 4% by weight of hydrocarbons boiling in the range of from 550 to 800 °C; (b) hydrotreating the hydrocarbonaceous feedstock with a hydrotreating catalyst in the presence of a hydrogen- containing gas under hydrotreating conditions to obtain a hydrotreated product; (c) hydrocracking at least part of the hydrotreated product as obtained in step (b) with a hydrocracking catalyst in the presence of a hydrogen-containing gas under hydrocracking conditions to obtain a hydrocracked product, which hydrocracking catalyst contains a zeolitic component which is present in an amount of at least 14 wt%, based on the total weight of the hydrocracking catalyst, and wherein the volume ratio of the hydrotreating catalyst as used in step (b) and the hydrocracking catalyst is more than 1; and (d) recovering from the hydrocracked product as obtained in step (c) the hydrowax.

The utility model relates to the technical field of light liquid paraffin rectification separation, in particular to a light liquid paraffin rectification separation mechanism which comprises a supporting frame, a rectification tank is fixedly connected in the supporting frame, the top of the rectification tank is communicated with an air outlet pipe, and the side wall of the rectification tank is fixedly connected with a condenser through a fixing plate. One end of the air outlet pipe is fixedly connected to the input end of the condenser, the output end of the condenser is fixedly connected with a liquid return pipe, the outer wall of the liquid return pipe is communicated with a discharging pipe, the side wall of the rectification tank is communicated with a material conveying pipe, and the bottom of the rectification tank is communicated with a discharging pipe. And a gas-liquid contact mechanism for fully increasing the contact area of gas and liquid is arranged in the rectification tank. Compared with the prior art, the problems of low separation efficiency, low purity and the like caused by insufficient contact area and time in the prior art are solved, a high-efficiency and stable separation process is realized, and the requirements on high-purity light liquid paraffin are met.

This utility model discloses a dewaxing device for lubricating oil base oil, including a preheating tank, a primary cooling tank and a secondary cooling tank sequentially arranged at the rear end of the preheating tank, and a filter box arranged at the rear end of the secondary cooling tank; the upper end of the preheating tank is provided with an oil inlet and an additive inlet, and a heat exchange tube for heating the preheating tank is arranged around its outer wall; the primary and secondary cooling tanks are respectively provided with oil delivery pipes for conveying base oil, and a first coolant tank and a second coolant tank are respectively connected to the primary and secondary cooling tanks for cooling the base oil in the oil delivery pipes; the filter box is provided with a vibrating screen and a filter plate for filtering the cooled base oil, a vibrating motor is provided at the bottom of the vibrating screen, and an oil outlet pipe is provided at the bottom of the filter box; the device also includes a PLC controller. This utility model improves the dewaxing effect and realizes wax recovery.

The invention provides a Fischer-Tropsch wax crude product decolorization method, which comprises: adding an adsorbent A and a first auxiliary agent material to a molten Fischer-Tropsch wax crude product to carry out first adsorption, and then adding an adsorbent B and a second auxiliary agent material to carry out second adsorption, the adsorbent A is prepared from activated carbon, zeolite, silica gel and activated clay; the adsorbent B is at least one of activated carbon, zeolite, silica gel and activated clay; the first auxiliary material is at least one of diatomite, talcum powder and activated carbon; the second auxiliary material is at least one of diatomite, talcum powder and activated carbon; the components of the first auxiliary material and the second auxiliary material are consistent. The activated carbon, the zeolite, the silica gel and the activated clay in the adsorbent A have a synergistic effect, a multi-layer and wide-range adsorption network is constructed, and compared with a traditional single adsorption material, various color development substances and impurities in the Fischer-Tropsch wax can be more comprehensively and efficiently removed.

The utility model discloses an impurity removing and separating device for chlorinated paraffin production, which comprises a device tank with an open top end, an upper cover plate is detachably mounted at the top end of the device tank, and a connecting ring is fixedly connected to the middle of the bottom end of the upper cover plate. According to the impurity removing and separating device for chlorinated paraffin production, stirring blades and a net cylinder are arranged, in the actual use process of the device, solid chlorinated paraffin is contained in the net cylinder, then an upper cover plate is installed at the top end of a device tank, then an electric heating wire outside the device tank starts to heat, the solid paraffin can be melted and drips downwards from the net cylinder, and then the solid chlorinated paraffin is separated from the net cylinder; meanwhile, stirring blades start to rotate, the volatilization speed of hydrogen chloride in chlorinated paraffin is increased, so that the overall impurity removal efficiency is improved, and after the whole impurity removal operation is finished, solid impurities are left in the mesh cylinder, so that the device can remove the solid impurities while removing hydrogen chloride, and the practicability of the device is improved.

This invention discloses a system and method for treating impurities in Fischer-Tropsch tail wax, comprising the following steps: heating the Fischer-Tropsch tail wax in a storage tank to a completely melted state; conveying the liquid Fischer-Tropsch tail wax in the storage tank to an inorganic membrane filtration unit via a feed pump, filtering and separating impurities in the liquid Fischer-Tropsch tail wax to obtain Fischer-Tropsch tail wax permeate; passing the flushing liquid from the backwashing system into the inorganic membrane filtration unit to clean the inorganic membrane; and discharging the filtered impurities and flushing liquid through a settling tank; wherein the pipelines used for conveying Fischer-Tropsch tail wax between the storage tank, feed pump, and inorganic membrane filtration unit are all equipped with heat tracing. This invention can effectively remove trace impurities from solid or semi-solid Fischer-Tropsch tail wax, resulting in a total metal content of less than 5 PPM in the treated tail wax.

A method of removing paraffinic wax from pyrolysis oil that includes flowing pyrolysis oil into a tank and reducing the temperature of the pyrolysis oil to a temperature that causes the paraffinic wax that is in solution in the pyrolysis oil to precipitate and form (1) paraffinic wax in solid form and (2) remaining pyrolysis oil in liquid form. The method further includes pumping the remaining pyrolysis oil from the tank to a first location. The method then involves heating the paraffinic wax in solid form to form paraffinic wax in liquid form and pumping the paraffinic wax in liquid form to a second location. In this way, the paraffinic wax and the remaining pyrolysis oil can be processed separately according to their respective properties.

The invention discloses a wax recycling method which comprises the following steps: placing a waste wax material in a vacuum chamber, keeping for a first preset time, and controlling the temperature in the vacuum chamber to be a preset temperature and the vacuum degree to be a preset vacuum degree, so that the waste wax material is melted; after the molten waste wax material is cooled and layered, wax with impurities on the bottom layer is obtained; putting the wax containing the impurities into a water tank, adding deionized water, and heating to a boiling state to obtain a first wax liquid; adding a hydrochloric acid solution with a preset concentration and alum with a preset weight into the first wax liquid, cooking for a second preset time, and keeping in a boiling state for a third preset time to obtain a second wax liquid; and standing the second wax liquid in the water tank for a fourth preset time to precipitate impurities in the second wax liquid, and obtaining pure wax according to the clear liquid wax liquid on the surface layer. By adopting the technical scheme provided by the invention, the wax can be simply and effectively recycled.

The invention relates to a preparation method of molecular biological grade high-melting-point light paraffin oil. The method comprises the following steps: S1, removing interfering substances in the light paraffin oil by using stearic acid; s2, washing and drying; s3, kaolin adsorption; s4, separating; and S5, verifying the performance. The high-melting-point light paraffin oil prepared through the scheme has the characteristic of being capable of being solidified at the normal temperature, meanwhile, liquid in a fluorescent PCR amplification tube can be effectively sealed, the stability of an amplification system is ensured, and the fluorescent PCR amplification result is not affected. The high-melting-point light paraffin oil can be applied to full-automatic fluorescent PCR amplification equipment, so that a mechanical arm for opening and closing a PCR tube cover is omitted, the equipment size is reduced, and the equipment cost is reduced.

The present invention relates to a method for preparing phase change wax by sweating and a sweating dish device with an external circulation heat-insulating water system used in the method, including a method for preparing phase change wax by using a solid oil-containing regulator and a sweating dish device with a high heat-conducting sieve plate. The sweating dish device includes a sweating dish body with a valve provided at the lower outlet and a multi-layer high heat-conducting sieve plate arranged in the sweating dish body; a heat-insulating interlayer is provided in the sweating dish body; a water inlet and a water outlet are provided on the heat-insulating interlayer. Sweating includes the following steps: preliminary work, preparation of the sweating dish device; preparation of the mixed material, loading operation, cooling operation; heating operation; after the heating is completed, the material remaining after sweating in the sweating dish device is taken out for white clay refining, decolorization, and molding to obtain phase change wax. The purpose of the present invention is to overcome the defects of the prior art and provide a method for preparing phase change wax by sweating and a sweating dish device with an external circulation heat-insulating water system used in the method.

The utility model relates to the field of molecular distillers, and discloses a molecular distiller for Fischer-Tropsch wax processing, which comprises a placing tank, the bottom of the placing tank is fixedly connected with a base, the bottom of the placing tank is communicated with a liquid discharge pipe, the outer wall of the liquid discharge pipe is provided with an electric water valve, the outlet of the liquid discharge pipe is communicated with a diffusion pump, and the diffusion pump is communicated with a water outlet of the electric water valve. An air outlet pipe is communicated with the outer wall of the diffusion pump, a liquid storage cavity is formed in the placement tank and surrounds the liquid discharge pipe, a liquid inlet pipe penetrating out of the placement tank is communicated with the inner wall of the liquid storage cavity, and a sealing plug is hermetically inserted into an inlet of the liquid inlet pipe. The Fischer-Tropsch wax cooling device is easy to use, the remaining amount of liquid in the containing tank can be known by observing the height of the connecting rod, the characteristic that the cooling speed of heat conduction oil is low in the liquid storage cavity is utilized, the liquid drainage pipe is wrapped in the liquid storage cavity, and therefore the temperature in the containing tank and the temperature in the liquid drainage pipe can be maintained, and the problem that the Fischer-Tropsch wax cooling speed is too high is solved.

The application discloses a multi-working-condition heating furnace combustion stabilizing system and method, wherein the acid gas of each device is mixed into an acid gas desulfurization tower through first to fourth adjusting valves for desulfurization; after the dry gas is refined, part of the dry gas is sent to a downstream device, and the other part of the dry gas is mixed into a first fuel gas distribution tank through a seventh adjusting valve and a No. 3 density instrument, and is mixed with pipe network fuel gas through a No. 2 density instrument and an eighth adjusting valve; a No. 1 density instrument monitors the density of the mixed fuel gas; the seventh and eighth adjusting valves cooperatively control the pressure and the density in the tank; through acid gas collection, desulfurization, dry gas refining and fuel gas mixing control, the parameters of the first fuel gas distribution tank are stabilized; the application eliminates the safety hazards of the heating furnace caused by pipe network fluctuation, reduces the comprehensive energy consumption of the device, has high automation degree, has a flexible process flow and is suitable for various oil refining devices with dry gas desulfurization units.

The utility model discloses a wax-water separation device for wax mold casting, which comprises a separation tank, a tank cover mounted at the top end of the separation tank, a plurality of foot stools arranged on the outer wall of the lower end of the separation tank, a base arranged below the separation tank, a discharge port arranged at the bottom end of the separation tank, and a feed port mounted at the bottom end of the discharge port, a first conveying machine body is arranged at the end, away from the discharging opening, of the feeding opening, a second conveying machine body is installed at one end of the first conveying machine body, a first motor is installed on the upper surface of the base at the other end of the first conveying machine body through a support, and one end of the first motor extends into the first conveying machine body and is provided with a first spiral roller; and a second spiral roller is arranged in the second conveyor body. According to the utility model, not only is the use convenience of the separation device improved, but also the separation efficiency of a wax-water mixture during the use of the separation device is ensured, and the purpose of carrying out double-channel blanking and discharging on wax is achieved.

The invention discloses a modified SAPO-11 molecular sieve and a preparation method thereof, a catalyst and a preparation method thereof, and a Fischer-Tropsch wax hydroisomerization method, and belongs to the technical field of chemical engineering. The method comprises the following steps: mixing an aluminum source, a phosphorus source, a silicon source, a template agent, alcohols, water and a transition metal source to obtain initial gel; the transition metal source is selected from at least one of an iron source, a cobalt source, a nickel source, a copper source and a zinc source; crystallizing the gel to obtain a product; the first-stage crystallization temperature is 60-150 DEG C, and the time is 10-18 hours; the second-stage crystallization temperature is 130-200 DEG C, and the time is 10-18 hours; and roasting the product to obtain the modified molecular sieve. The specific transition metal is introduced into the SAPO-11, so that the acidity of the SAPO-11 is improved, and the isomerization activity is promoted; by adopting a variable-temperature crystallization process, the grain size of the crystal is reduced; the catalyst can significantly improve the isomerization product yield and selectivity of heavy wax, and shows excellent isomerization performance.

The utility model belongs to the technical field of density board production equipment, and discloses a paraffin conveying system which comprises a paraffin tank, a first three-way valve, a first branch pipeline, a second branch pipeline, a connecting pipe, a second three-way valve, a circulating pipeline, a discharging pipeline and a spiral conveyor, and the paraffin tank is provided with a paraffin outlet and a paraffin backflow inlet; the first three-way valve is provided with a feeding inlet end, a first outlet end and a second outlet end, and the feeding inlet end is communicated with a paraffin outlet of the paraffin tank; one end of the first branch pipeline is communicated with a first outlet end of the first three-way valve; one end of the second branch pipeline is communicated with a second outlet end of the first three-way valve; one end of the connecting pipe is communicated with the other end of the first branch pipeline, a communicating port is formed in the side wall of the connecting pipe, and the communicating port is communicated with the other end of the second branch pipeline; according to the paraffin conveying device, paraffin can be stably and continuously conveyed, production continuity is ensured, and impurities in the conveying process are removed.

This invention provides a method for preparing rubber protective wax, comprising the following steps: refining ketone-benzene triple-oiled wax and ketone-benzene quadruple-oiled wax with bleaching clay to obtain triple-oiled wax blending raw material oil and quadruple-oiled wax blending raw material oil; blending the triple-oiled wax blending raw material oil and quadruple-oiled wax blending raw material oil, followed by static mixing, to obtain a first oil product; circulating the first oil product to obtain a second oil product; allowing the second oil product to settle and removing water to obtain a third oil product; and molding the third oil product to obtain rubber protective wax. The ketone-benzene triple-oiled wax and quadruple-oiled wax used in this invention are refined with bleaching clay to remove unsuitable components for rubber protective wax from the raw materials. After being blended using a precisely controlled proportioning system, the produced rubber protective wax product exhibits superior performance and meets the requirements of NB / SH / T 0871-2021.

The utility model relates to a Fischer-Tropsch wax refining vacuumizing unit system which comprises a Roots vacuum pump set, a liquid ring vacuum pump, a first separation tank and a second separation tank, one end of the first separation tank is communicated with a wax refining device, the other end of the first separation tank is communicated with the Roots vacuum pump set, and the other end of the first separation tank is communicated with the liquid ring vacuum pump set. The other end of the Roots vacuum pump set is communicated with the second separation tank, and the other end of the second separation tank is connected with the liquid ring vacuum pump. According to the Fischer-Tropsch wax refining vacuumizing unit system, the first separation tank and the second separation tank are arranged, the first separation tank is used for preliminarily separating gas and impurities from a wax refining device, and the second separation tank is used for separating solid impurities generated after a pipeline and the device are corroded by acid gas; a large amount of solid impurities are prevented from entering the vacuum unit to cause blockage of pipelines in the vacuum unit and damage to a vacuum pump.

Disclosed is a method for producing series of phase change wax products, comprising : refining a Fischer-Tropsch synthesis wax raw material via a hydrogenation reaction to obtain a refined Fischer-Tropsch wax; and subjecting the refined Fischer-Tropsch wax to reduced pressure distillation to separate continuous fractions with a distillation range of 5°C-30°C by continuously increasing the operation temperature so as to obtain series of phase change wax products, wherein the pressure for the reduced pressure distillation is 0-1000 pa, the operation temperature at the top of the column is 120°C-260°C, and the phase change enthalpy value of the series of phase change wax products is ≥ 170 J / g. According to the method, phase change wax products of various grades with melting points from 5° C to 80° C can be separated and produced from the refined Fischer-Tropsch wax. The products have concentrated carbon numbers and relatively high enthalpy values. The process products have relatively high flexibility, can be customized on demand, and have low production cost, and the industrial production of the products can be realized.