387results about "Refining by filtration" patented technology

The invention relates to the technical field of petroleum filtering, in particular to a petroleum filtering device and a using method.The petroleum filtering device comprises a filter body, a data collecting assembly and a data processor, and the data collecting assembly obtains petroleum state data of a liquid inlet and a liquid outlet of the filter body within a target time period; the data processor obtains suspected abnormal state data in the petroleum state data and corresponding suspected moments, and based on the suspected abnormal state data of all the suspected moments, target suspected pollution degrees of all the suspected moments are obtained; based on the numerical value change trend and the time continuity of the target suspected pollution degree of all the suspected moments, the pseudo-abnormal degree of the target time period is obtained, then the real pollution degree of the cut-off moment of the target time period is obtained, the next backwashing moment is obtained according to the real pollution degree, the accuracy of the backwashing moment is improved, and the backwashing efficiency is improved. And finally, the accuracy of backwashing starting control is improved, and the efficiency of the petroleum filtering device is improved.

The present invention belongs to the technical field of oil extraction and provides a sand fracturing wellhead device, comprising a main pipe, a branch pipe connected to the side of the main pipe, a mounting ring slidably installed in the branch pipe, and a second telescopic member fixedly installed in the branch pipe to drive the mounting ring to move, the mounting ring and the branch pipe are coaxially arranged and the outer side of the mounting ring is in sliding contact with the inside of the branch pipe, a first filter is fixedly installed in the mounting ring, and a temporary storage box is provided on the branch pipe, the temporary storage box is located on the outside of the branch pipe and a storage box and a connecting groove are fixedly installed at both ends of the temporary storage box, and the connecting groove is connected to the branch pipe. Compared with the prior art, the beneficial effects of the present invention are as follows: impurities on the first filter screen will fall off the first filter screen due to speed reasons, and at the same time, the oil flowing into the connecting groove will drive the impurities that have fallen off the first filter screen into the temporary storage box, thereby achieving the cleaning of impurities on the first filter screen, and the cleaning of the first filter screen can be achieved without stopping the transportation of oil.

Belonging to the field of petrochemical engineering, the invention discloses a catalytic slurry oil purification device, which comprises a tank body, and a feed end and a discharge end respectively arranged at two ends of the tank body. An upper partition plate and a lower partition plate are fixedly connected to the inner wall of the tank body, a discharging opening is formed in the upper partition plate, and a feeding opening is formed in the lower partition plate; the interior of the tank body is divided into three independent cavities by the upper partition plate and the lower partition plate; according to the scheme, the filter element is sleeved with the hollow cylinder, and the rotatable first spiral flow deflector is further arranged between the inner wall of the hollow cylinder and the outer wall of the filter element; a rotatable first spiral flow deflector is further arranged between the inner wall of the hollow cylinder and the outer wall of the filter element; a shear force generated by rotation of the first spiral flow deflector can prevent a filter cake on the surface of the filter element from forming a compact thick layer; a filter cake layer can be controlled within a relatively thin thickness range, and the rising speed of the pressure difference is delayed, so that the operation duration of a single filtering period is prolonged; and the single-time continuous treatment capacity of the device is greatly improved.

The invention belongs to the technical field of oil exploitation, and provides a sand-prevention fracturing wellhead device which comprises a main pipe, the side face of the main pipe communicates with a branch pipe, a mounting ring is slidably mounted in the branch pipe, and a second telescopic part for driving the mounting ring to move is fixedly mounted in the branch pipe. The installation ring and the branch pipe are coaxially arranged, the outer side face of the installation ring is in sliding contact with the interior of the branch pipe, a first filter screen is fixedly installed in the installation ring, a temporary storage box is arranged on the branch pipe and located on the outer side of the branch pipe, a storage box and a communicating groove are fixedly installed at the two ends of the temporary storage box respectively, and the communicating groove communicates with the branch pipe. Compared with the prior art, the device has the following beneficial effects that impurities on the first filter screen can be separated from the first filter screen due to the speed, meanwhile, petroleum flowing into the communicating groove can drive the impurities separated from the first filter screen to enter the temporary storage box, and cleaning of the impurities on the first filter screen is achieved; and the first filter screen can be cleaned without stopping petroleum conveying.

The invention discloses an adjusting and optimizing filtering method and system for a petroleum filtering device, and relates to the technical field of petroleum filtering, and the method comprises the following steps: initially checking and establishing a petroleum feature set; and inputting the petroleum feature set into a filter screen setting model to generate a filter screen configuration result. And key adjustment parameters of the petroleum filtering device are established. Big data is called through a petroleum feature set, a fitness function is constructed, data selection is performed based on the big data and in-plant control data, and a solution space and an initial solution set are established. And evaluating the initial solution set based on a fitness function, performing iterative screening, and establishing an optimal solution identifier and an inferior solution identifier. And performing initial solution set reproduction and solution space variation through optimal solution and inferior solution identification, and executing initial solution set iteration. And generating an optimization result according to the iteration result, and performing tuning filtering treatment according to the filter screen configuration result and the optimization result. Therefore, the technical effects of improving the adaptability of the petroleum filtering device and improving the filtering efficiency are achieved.

The invention discloses a petrochemical engineering pipeline filter, which relates to the technical field of filters, and adopts the technical scheme that the petrochemical engineering pipeline filter comprises a shell, and a filtering mechanism is arranged in the shell; the filtering mechanism comprises a cylinder, the cylinder is arranged in the shell, two sides of the cylinder are fixedly provided with two fixing blocks, the fixing blocks are fixedly connected with the inner wall of the shell, the bottom of the cylinder is provided with a filtering plate, two sides of the cylinder are fixedly provided with clamping plates, the clamping plates are buckled with the filtering plate, the clamping plates are fixedly connected with the filtering plate through bolts, and one side of the cylinder is fixedly provided with a slag discharging pipe; the filter has the beneficial effects that the problem that a traditional filter needs to be frequently replaced due to blockage of the filter plate is effectively solved, the filtering efficiency and the continuity of equipment operation are greatly improved, and the filter is convenient to use and high in practicability. And the arranged auxiliary filtering mechanism can continuously filter crude oil while the filter plate is cleaned, so that the continuity and the stability of petroleum transportation are ensured.

A filter and method for removing solids from FCC oil slurries and concentrates thereof is provided. The filter comprises a main tank (4), a first filter cylinder, a second filter cylinder and a third filter cylinder, each of which is composed of a main conduit and a number of secondary conduits with porous outer walls surrounding the main conduit, each of which is fitted with a single turn of first filter membrane around its outer periphery, a filter cake scraper (7) installed inside the main tank above the third filter cylinder, and a deslagging bin (8) installed at the bottom of the main tank. The present invention can achieve complete solid-liquid separation of FCC oil slurry and its concentrate, and fully automatic, intelligent operation.

The utility model belongs to the technical field of waste oil treatment, and particularly relates to a waste oil treatment and recovery device which comprises a shell, a plug pin structure is installed at the front end of the shell, inclined panels are fixedly connected to the middle of the inner wall of the shell, and a filter plate is arranged on the inner wall of the shell and located between the inclined panels. A self-locking mechanism is installed in the top square inclined panel and the filter plate, and a sealing mechanism is installed on the inner wall of the front end of the filter plate. According to the utility model, through the mutual cooperation of the curved surface of the curved-surface cylinder and the curved-surface ring, the sliding rod and the inclined surface block structure, and under the action of the elastic force of the first spring, the filter plate can be conveniently and quickly mounted and unlocked, and the filter plate can be conveniently replaced; and through a bolt rod, a bolt column and a groove formed in the top end of the filter plate handle, the two ends of the filter plate are limited, so that the stress of the two ends of the filter plate is the same, and the filter plate is prevented from being bent.

The high-frequency double-layer vibrating screen for petroleum drilling comprises a box body, the top of the box body is fixedly connected with a feeding pipe in a communicating mode, the tops of the two sides of the box body are fixedly connected with vibrating motors, and two driving wheels and two driven wheels are rotationally installed between the inner walls of the front side and the rear side of the box body. By arranging a series of structures, drilling fluid can be subjected to two-stage vibration solid slag filtration, and solid slag conveying, outer side scraping cleaning of a conveying belt type filter screen, inner side back blowing cleaning dredging, blowing cleaning slag discharging and guiding and concentric-square-shaped filter screen dredging work can be conveniently and automatically achieved in a single-drive integrated mode during vibration filtration; according to the device, dredging cleaning and internal deslagging work do not need to be manually and separately conducted at regular time, the stable, automatic and long-acting screening requirement is met, integrated blowing and discharging and slope guiding and discharging are matched with an original vibration mode, solid residues can be effectively, stably, continuously and automatically discharged, the screening and deslagging stability is improved, and the mode that multiple functions are integrally achieved through single driving is utilized, so that the screening efficiency is improved. And a good energy-saving effect is achieved.

The invention discloses filter material buffer equipment and a buffer method for a ZS filter. The equipment comprises an outer shell, a rough filtration assembly, a fine filtration assembly and a discharge pump, the rough filtration assembly comprises a filter screen disc arranged in the outer shell, a hollow pipe clamped in the outer shell and a material stirring rake arranged on the hollow pipe, and a driving motor is arranged at the top end of the outer shell; the fine filtering assembly comprises a positioning ring plate arranged in the outer shell, a fine filtering net clamped to the positioning ring plate, an extrusion plate and a driving ring, a moving rod is clamped to the positioning ring plate, and an electric push rod hinged to the outer shell is hinged to the driving ring; the equipment disclosed by the invention is reasonable in structural design, and the catalytic cracking oil slurry entering the ZS filter is more uniform in texture by performing coarse filtration, fine filtration and stirring homogenization treatment on the catalytic cracking oil slurry, so that the pulsation phenomenon caused by medium pressure when the catalytic cracking oil slurry enters the ZS filter is avoided, and the quality of the catalytic cracking oil slurry is improved. The running stability and reliability of the ZS filter are improved, and the ZS filter is suitable for popularization and application.

The utility model relates to the technical field of waste mineral oil processing, in particular to a filtering tank for regeneration treatment of waste mineral oil, which comprises a processing table, a processing component and a filtering component are respectively arranged at the top of the processing table, and the filtering component is positioned on the side surface of the processing component. According to the waste mineral oil processing device, waste mineral oil in a processing barrel is heated through a steam inlet pipe, then hot steam is led into an annular heating pipe, then the annular heating pipe heats the waste mineral oil in the processing barrel, then the steam is discharged from a steam outlet pipe, and the processing barrel can be continuously heated through circulation, so that the waste mineral oil can be conveniently stirred by a stirring frame, and the processing efficiency and the processing quality are improved; the oil well pump is started to pump waste mineral oil in the processing barrel into the filter barrel through the oil pumping pipe, the working efficiency is improved, the first filter screen and the second filter screen are arranged in the filter barrel, the mesh size of the first filter screen is smaller than that of the second filter screen, and then the quality of the filtered waste mineral oil is improved.

The invention discloses a fine filter for refining fuel oil, and relates to the technical field of filtration. The fine filter for refined fuel oil comprises a shell assembly, the shell assembly comprises an outer cylinder, an upper cover plate and a first lower sealing plate, the upper cover plate is fixedly connected to the top end of the outer cylinder, and the first lower sealing plate is fixedly connected to the bottom end of the outer cylinder; the inner cylinder is rotationally installed at the axis position in the shell assembly, and the axis of the inner cylinder is parallel to the axis of the outer cylinder; and the annular filter screen is vertically installed in the shell assembly, and the annular filter screen is located between the inner cylinder and the outer cylinder. The dirt scraping mechanisms are arranged at the filter screen and the filter element respectively, the dirt discharging mechanism is arranged at the bottom end of the inner cylinder, accumulated dirt generated during filtering of the device is transferred into the conical containing cavity and discharged through the dirt discharging mechanism, dirt discharging work can be carried out during filtering work, shutdown treatment is not needed during dirt discharging, and the device is convenient to use. And the replacement period and the service life of the filter element and the filter screen are prolonged.

A method for treating mixed plastic waste, the method comprising: (I) pyrolyzing the mixed plastic waste in a pyrolysis reactor at a temperature of 250 DEG C to 700 DEG C and a pressure of 1.0 bar to 100 bar to form a pyrolysis oil; (II) optionally transferring the pyrolysis oil directly to a hydrotreating unit via a filter, and subjecting the pyrolysis oil to hydrotreating with a catalyst in the presence of hydrogen at a temperature of 250 DEG C to 700 DEG C and a pressure of 1.0 bar to 100 bar to form a hydrotreated pyrolysis oil; (III) regenerating a portion of the hydrotreated pyrolysis oil directly from the hydrotreating unit to the pyrolysis reactor.

The invention relates to the technical field of gas anchors, in particular to a variable pitch type spiral gas anchor. Comprising an anchor body, a sand prevention cylinder is installed on the lower side of the anchor body, a sand prevention hole is formed in the sand prevention cylinder, a spiral piece is fixedly connected into the anchor body, a center pipe fixedly connected with the anchor body is fixedly connected to the middle of the spiral piece, and the anchor body, the spiral piece and the center pipe are matched to form a spiral channel. A separation cavity is formed in the upper side of the spiral piece in the anchor body, the screw pitch of the lower side of the spiral piece is smaller than that of the upper side of the spiral piece, the screw pitch of the upper side of the spiral piece is gradually increased from bottom to top, and exhaust holes which are distributed in a spiral shape and located in the inner side of the spiral piece are formed in the center pipe. Petroleum pushes gas to the middle by setting the screw pitch of the spiral piece, the gas in the spiral channel is exhausted in advance in cooperation with the exhaust hole, the amount of the gas accumulated in the separation cavity is reduced, and it is guaranteed that the oil pumping process is conducted smoothly.

The invention provides a high-pressure crude oil filtering separator with a pressure self-adaptive adjustment function, and relates to the technical field of filtering and separating devices.The high-pressure crude oil filtering separator comprises a flow dividing pipe, filtering boxes are arranged at the bottoms of the two ends of the flow dividing pipe, connecting pipes are fixed to the tops of the filtering boxes, and propellers are rotationally installed in the connecting pipes through spokes; a flow dividing pipe is arranged at the bottom of the filter box, an oil inlet pipe is fixed to the top of the middle of the flow dividing pipe, an oil discharging pipe is arranged on one side of the bottom of the filter box, a separator is arranged at the rear end of the filter box, and a conveying pipe is fixed to the top of the oil discharging pipe. Crude oil is filtered and separated through the leakage frame and the conical filtering plate in the filtering box, comparison is conducted according to the crude oil output efficiency of the bottom of the filtering box, the situation that crude oil is insufficient or a filtering structure is blocked is distinguished, the filtering structure is cleaned or the rotating speed of a propeller is increased according to needs, and the passing rate of the crude oil is increased by improving pressure.

The present invention relates to a process for treating a feedstock comprising plastics and / or tyres and / or solid recycled fuel pyrolysis oils containing halogenated compounds, said process comprising: a) a hydrotreating step to obtain a partially hydrotreated effluent having a reduced halogenated compound content, b) a separation step to obtain a partially hydrotreated effluent having a reduced halogenated compound content, and c) a separation step to obtain a partially hydrotreated effluent having a reduced halogenated compound content. The present invention relates to a process for the steam cracking of a petroleum feedstock fed with a partially hydrotreated effluent from step a) and an aqueous solution to obtain a gaseous effluent, an aqueous effluent and a partially hydrotreated hydrocarbon effluent, c) a steam cracking step of a petroleum feedstock wherein at least a portion of the partially hydrotreated hydrocarbon effluent is introduced as a common feedstock, the mixture of the petroleum feedstock and the partially hydrotreated hydrocarbon effluent from step b) has a halogenated compound content of less than or equal to 3 ppm by weight without first undergoing a further hydrotreating step carried out at a higher temperature and / or pressure.

The utility model discloses a waste mineral oil impurity removal device and relates to the technical field of impurity removal devices. Comprising a box body, filtering frames are slidably connected to the inner walls of the two ends of the box body, limiting plates are fixed to the two sides of the top end of each filtering frame, sliding grooves are formed in the sides, close to each other, of the two limiting plates, and a cleaning mechanism is arranged on the inner walls of the two ends of the box body in a penetrating mode and comprises two fixing plates fixed to the inner wall of one side of the box body; a lead screw is rotationally connected between the two fixing plates. Compared with the prior art, the cleaning device has the advantages that the lead screw rotates, so that the sliding block moves, the mounting rod is driven to move, the mounting rod moves to drive the cleaning plate to move front and back, and the surface of the filtering frame is cleaned; the cleaning plate is located between the two limiting plates all the time, and when the filtering frame moves, the cleaning plate moves left and right on the mounting rod, and impurities on the surface of the filtering frame are cleaned away from the filtering frame.

The present invention relates to a method for treating plastic pyrolysis oil, comprising: a) hydrogenating said feedstock in a mixture with at least a portion of the liquid effluent obtained from step c) in the presence of hydrogen and a catalyst at a temperature of 140-340° C.; b) hydrotreating said hydrogenated effluent in the presence of hydrogen and a catalyst; c) separating the hydrotreated effluent, said separation being carried out at high temperature and under high pressure to obtain a gaseous effluent and a liquid effluent, and recycling a portion of the liquid effluent upstream of step a); d) feeding at low temperature and under high pressure the other portion of the gaseous and liquid effluents obtained from step c) and an aqueous solution to carry out the separation and obtain a hydrocarbon-based effluent.

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 utility model relates to the technical field of waste tire pyrolysis oil treatment, and discloses waste tire pyrolysis oil carbon black rapid separation equipment which comprises a separation cylinder main body, according to the rapid separation equipment for the waste tire pyrolysis oil and the carbon black, through the arrangement of a transmission assembly and a push-pull assembly, when the rapid separation equipment is used, a pyrolysis oil and carbon black mixture enters a filtering sleeve through a feeding pipe, a driving motor is started to drive a transmission gear in a supporting sleeve box to rotate, and then meshed gear rings on a fixing sleeve are driven; the fixed sleeve and the filter sleeve rotate at a high speed inside, pyrolysis oil is separated out through centrifugal force and reaches the oil outlet pipe through the oil discharge net disc to be discharged, carbon black is left in the filter sleeve, then the hydraulic rod is started, the movable bolt pulls the circular baffle to open the bottom, and the carbon black is discharged from the carbon black discharge pipe; therefore, the effect of rapidly separating the pyrolysis oil and the carbon black is achieved, meanwhile, the pyrolysis oil and the carbon black are conveniently discharged, and the automation degree of the rapid separation equipment for the pyrolysis oil and the carbon black of the waste tires is improved.

The invention relates to a method for treating a feedstock comprising a plastics-derived and / or tyre-derived and / or solid-recovered-fuel-derived pyrolysis oil, which method comprises: b) hydrogenation of the feedstock and a portion of the liquid effluent resulting from the separation step e1) to obtain a hydrogenated effluent; c) hydrotreatment of the hydrogenated effluent to obtain a hydrotreated effluent; d) hydrocracking of the hydrotreated effluent to obtain a hydrocracked effluent; e1) separation of the hydrocracked effluent at high temperature and high pressure to obtain a gaseous effluent and a liquid effluent, a portion of which is recycled upstream of step b); e2) a separation / washing step carried out at low temperature and high pressure, fed with the gaseous effluent and optionally the other portion of the liquid effluent resulting from step e1) and an aqueous solution, to obtain a hydrocarbon effluent freed of its impurities.

The present disclosure provides a method of purifying an organic material of biological origin, which includes providing a feedstock containing organic material of biological origin; purifying the feedstock in a pre-treatment step including heating the feedstock in a presence of an adsorbent at a temperature of at least 150° C., to obtain a heat-treated feedstock; filtering the heat-treated feedstock to remove adsorbent and to obtain a purified feedstock; and optionally subjecting the purified feedstock to further processing, wherein the purifying is performed in a cone vessel having a first cross sectional area in an upper part of the vessel which decreases downwards to a second cross sectional area, which is smaller than the first cross sectional area.

Aspects of the present disclosure generally relate to new processes for converting waste plastic. Aspects of the present disclosure also generally relate to new waste plastic conversion plants. In an aspect, a process for converting waste plastic is provided. The process includes heating a waste plastic feed with a dissolution medium to form a mixture comprising an insoluble component and a soluble component. The process further includes separating the soluble component of the mixture from the insoluble component of the mixture. The process further includes contacting the soluble component with a depolymerization catalyst to form a depolymerization product effluent. The process further includes separating a C12+ hydrocarbon from the depolymerization product effluent. The process further includes introducing the C12+ hydrocarbon to the dissolution unit.

The present invention discloses a method for preparing a filter membrane with a life detection function, which relates to the technical field of insulating oil regeneration. In the present invention, an indicator fluorescent agent is applied to indicate the life of the filter membrane. By performing a surface coating treatment of the pH indicator fluorescent agent on the filter membrane, a colored indicator surface layer is formed on the surface of the filter membrane. The acid value of the aged oil filtered through the filter membrane is not only reduced, but also during the whole process of filtration, it is possible to detect in real time whether the filter membrane has reached its service life according to the color change of the fluorescent agent on the surface layer of the filter membrane, thereby improving the filtration accuracy and efficiency of transformer oil. The filter membrane prepared by the present invention has excellent membrane life detection accuracy and can meet the high-efficiency purification and filtration in the field of transformer insulating oil.

The invention discloses a scale depositing device and a hydrogenation reactor, the scale depositing device is suitable for a fixed bed reactor with a gas-liquid two-phase coexisting material, the scale depositing device comprises a scale depositing unit, the scale depositing unit is composed of an axially extending central channel and a multi-stage annular filling scale inhibitor, and the void ratio of the multi-stage scale inhibitor is gradually increased from inside to outside; the impact reducing disc is arranged above the scale depositing unit, the diameter of the impact reducing disc is larger than the outer diameter of the scale depositing unit, the impact reducing disc and the scale depositing unit are spaced by a certain distance, the impact reducing disc is used for buffering a liquid phase in the material and guiding the liquid phase to the scale depositing disc to form liquid phase static pressure, and meanwhile, a gas phase in the material enters the center channel through the space between the impact reducing disc and the scale depositing unit; after depositing on the scale depositing disc at a certain height, a liquid phase flows step by step along the radial direction of the scale depositing unit under the action of static pressure of the liquid phase, and graded sedimentation is realized in the radial flowing process. By means of the structure of the impact reducing disc and the graded scale depositing design, the problems that a scale depositing device bed layer is prone to being blocked and loses efficacy too early, and the scale depositing effect is poor due to the fact that feeding has large residual kinetic energy can be effectively solved.

The present invention relates to a method for pyrolysis of plastics, particularly waste plastics, comprising the steps of (a) pyrolysis of the plastic in a first pyrolysis reactor to obtain a first pyrolysis product, (b) separation of the pyrolysis residue from the first pyrolysis product in a first separation unit, (c) separation of the pyrolysis residue into a low-solid fraction and a high-solid fraction in a second separation unit, and (d) pyrolysis of the high-solid fraction in a second pyrolysis reactor to obtain a second pyrolysis product. The present invention further relates to a device for pyrolysis of plastics using the method.

The invention relates to the technical field of petroleum processing, and discloses petroleum refining filtering equipment for petrochemical engineering, which comprises a mounting frame, a filtering box fixed on the mounting frame, a filtering assembly arranged in the filtering box, and a feeding assembly for adding raw materials into the filtering box. One side of the filter box is open, a discharging pipe is installed on the outer side of the filter box, and a slag discharging opening is formed in the bottom of a shell of the filter box. The feeding assembly comprises a material injection pipe, the middle part of the material injection pipe penetrates through the filter box, the two ends of the material injection pipe are connected with the mounting frame, one end of the material injection pipe is used for being connected with an external material supply pipe, and a discharging opening is formed in the portion, located in the filter box, of the material injection pipe. Through the filter plate and the rotatable injection pipe, the scraping plate corresponding to the filter plate can be conveniently driven to rotate, so that residues on the surface of the scraping plate are effectively cleaned.

The utility model provides an oil field filtering device which comprises a tank body, a filter screen is connected inside the tank body in a sliding mode, one end of the filter screen is fixedly connected with a connecting rod, one end of the connecting rod is fixedly connected with a vibration motor, the vibration motor and one end of the tank body are fixedly connected with a spring support, and one end of the filter screen is connected with a scraping plate in a sliding mode. One end of the tank body is fixedly connected with a stirring motor, one end of a power output shaft of the stirring motor is provided with a plurality of buffer grooves, one ends of the buffer grooves and the scraper blade are fixedly connected with springs III, one end of the scraper blade is slidably connected to the buffer grooves, one end of the stirring motor is rotatably connected with a limiting ring, and a limiting ring is fixedly connected in the tank body; sediment in crude oil can be filtered out through the filter screen, the rotating scraper blade can scrape away the sediment attached to the lower portion of the filter screen in the filtering process to keep the filter screen smooth, meanwhile, the vibration motor drives the filter screen to vibrate through the connecting rod at set intervals, vibration cleaning can be conducted, the filter screen is further prevented from being blocked, and the filtering effect is kept.

A process for reducing injector deposits in an internal combustion engine fuelled with a fuel composition, the process comprising contacting a fuel composition with a metal-selective membrane situated in the fuel delivery system. The reduction of such deposits provides an increase in fuel efficiency, fuel thermal stability, boost in engine cleanliness, improves fuel economy and enables the possibility of using a reduced amount of expensive detergent in the fuel composition.

The present invention relates to a light oil separation system. The purpose of the present invention is to separate light oil from pyrolysis oil generated by pyrolysis, to enable continuous production of pyrolysis oil products having a required flash point, thereby enhancing product competitiveness. For this purpose, the present invention comprises: a preheater which receives pyrolysis oil from a pyrolysis oil reduction apparatus and preheats the pyrolysis oil; a heater which heats the pyrolysis oil preheated through the preheater, to induce the removal of light oil from the pyrolysis oil through volatilization; a boiler which circulates heated water in each of the preheater and the heater to support preheating or heating of the pyrolysis oil; a condenser which receives the light oil removed from the pyrolysis oil through the heater and condenses same; a light oil storage unit configured to store the light oil condensed through the condenser; a cooler which receives the pyrolysis oil from which the light oil has been removed in the heater and supports the pyrolysis oil to cool it down; at least one filter which filters the pyrolysis oil cooled by the cooler, to obtain high-purity pyrolysis oil; a pyrolysis oil storage tank which stores the pyrolysis oil filtered through the filter; and a cooling water supply unit which circulates cooling water in each of the condenser and the cooler to support cooling of the pyrolysis oil or the light oil.