36results about "Dewatering/demulsification regulation/control" patented technology

The utility model belongs to the technical field of petroleum dehydration, and discloses a novel petroleum electric dehydration device which comprises a grounding base and a dehydration controller electrically connected with an external power supply, a bearing frame is detachably mounted on the grounding base, a stirrer is mounted on the bearing frame, a glass measuring cylinder is placed on the bearing frame, and the dehydration controller is electrically connected with the glass measuring cylinder. The stirrer partially extends into the glass measuring cylinder; the dehydration controller is provided with a dehydration key, the dehydration key is connected with the glass measuring cylinder through an electric wire, the dehydration controller is provided with a stirring heating key, the stirring heating key is connected with the stirrer through an electric wire, the bearing frame comprises a supporting frame, the supporting frame is detachably installed on the grounding base, and the stirrer is installed on the supporting frame. An upper connecting rod is fixedly installed on the supporting frame. According to the utility model, the dehydration time is remarkably shortened under the synergistic action of electric field force, mechanical force and gravity, manual intervention is avoided, the whole dehydration process is more efficient and safer, and meanwhile, the applicability and the stability of the device under wide working conditions can be ensured.

The invention relates to the technical field of crude oil dehydration data processing in the petroleum industry, and discloses a crude oil electric dehydration high-voltage power supply capable of automatically switching waveforms according to loads and a method. The crude oil electric dehydration high-voltage power supply comprises a temperature sensor arranged on a crude oil dehydration tank, and a voltage sensor and a current sensor which are arranged at the load end of the crude oil dehydration tank; the high-voltage power supply is provided with a digital control unit, the digital control unit is connected with a high-voltage switch, the high-voltage switch is connected with a direct-current generator and a high-voltage pulse generator, the high-voltage pulse generator is connected with a water chain of the crude oil dehydration tank, and the direct-current generator is connected with an electrode of the crude oil dehydration tank. The conductivity of the crude oil or the emulsified liquid is calculated and corrected by combining the collected current, voltage and temperature data, and the digital control unit performs multi-loop control through the conductivity data. According to the invention, the output of alternating current, direct current, pulse and composite electric field can be realized, and the working waveform can be intelligently switched according to the emulsion load characteristic, so that the electric dehydration efficiency and the system energy efficiency are improved.

The invention relates to the field of fuel regeneration, dehydration and filtration, in particular to an EH fire-resistant oil regeneration, dehydration and filtration machine which comprises a base, an oil pump is fixedly mounted on the base and is in driving connection with a hydraulic loop, and the hydraulic loop is sequentially communicated with an oil inlet valve, an oil suction filter, a fine filter, a protection filter and an oil outlet valve. The electric control box is mounted on the upper side of the base; a regeneration branch and a dehydration branch are arranged between the oil absorption filter and the fine filter; a dehydration filter is mounted on the dehydration branch; according to the EH fire-resistant oil regeneration dehydration oil filter, the functions of precise filtration, deep dehydration and regeneration are integrated, comprehensive purification of EH fire-resistant oil is achieved, solid particles, moisture and acidic materials can be effectively removed, and the operation reliability and safety of a steam turbine speed regulating system are improved; meanwhile, the equipment is connected in parallel with the regeneration filter and is adjustable in flow, so that the complexity of serial use of a plurality of equipment is avoided, and the occupied area and the maintenance cost are reduced.

A hydrocarbon-in-water purification system includes a high capacity hydrocarbon absorber stage having a high capacity hydrocarbon absorber material and an inlet configured to receive a hydrocarbon-in-water dispersion from a fuel system. A polishing hydrocarbon absorber stage is in liquid communication and downstream of the high capacity hydrocarbon absorber stage including polishing activated carbon. The high capacity hydrocarbon absorber material has a greater saturation capacity than the polishing activated carbon and the polishing activated carbon has a greater polishing capacity than the high capacity hydrocarbon absorber material. A method for controlling and managing the evacuation of water from the hydrocarbon-in-water purification system includes tracking the purification state of water volumes and the bed loading states of purification beds defined in the water filter.

A method can include receiving, by a demulsifier analysis framework, tensiometer data for an oil and water field sample that includes an added candidate demulsifier, where the tensiometer data include rheology data with respect to frequency and where the demulsifier analysis framework includes a model derived at least in part on bottle test data for demulsifiers in oil and water emulsions; determining a performance characteristic for the candidate demulsifier with respect to the oil and water field sample using the tensiometer data as input to the model of the demulsifier analysis framework without performing a bottle test on the oil and water field sample; and outputting, by the demulsifier analysis framework, the performance characteristic for the candidate demulsifier with respect to breaking an emulsion of the oil and water field sample.

A gas-oil separation plant (GOSP) system includes a crude inlet line extending to a separation vessel where a sour gas stream may be separated from an inlet fluid stream. The GOSP system provides an H2S membrane system where the sour gas stream may be directed for separation of H2S and an electrolyzer where H2 may be separated from the H2S. The GOSP system also includes a combustion gas turbine where an exhaust containing CO2 is produced and a CO2 membrane system where the CO2 may be separated from the exhaust. The H2 and CO2 may be combined and reacted in a Sabatier reactor to produce CH4 and H2O. The CH4 may be used to fuel the combustion gas turbine and the H2O may be directed to a steam head for use in other processes. Additionally, a sweetened gas stream having the H2S removed may be exported by the GOSP system.

The invention provides a method (100) for operating a system (1) comprising a centrifugal separator (2) for separating at least one liquid phase and a sludge phase from a liquid feed mixture. The method (100) includes alternating between a first mode of operation and a second mode of operation. The first mode of operation comprises the steps of: a) supplying (101) the liquid feed mixture to be cleaned to the centrifugal separator (2), the liquid feed mixture having a first temperature; and b) discharging (102) the at least one separated liquid phase from the centrifugal separator (2). The second mode of operation comprises the steps of: c) stopping (103) the supply of the liquid feed mixture to the centrifugal separator (2); and d) reducing (104) the temperature of the liquid feed mixture to a second temperature and / or reducing (105) the flow rate of the liquid feed mixture. The invention also provides a system (1) for separating at least one liquid phase and a sludge phase from a liquid feed mixture.

The invention discloses a crude oil electric dehydration device based on a double-PTC coordinated regulation mechanism, and belongs to the field of crude oil dehydration, the crude oil electric dehydration device comprises a positive electrode and a negative electrode arranged at two ends of a crude oil treatment area, the positive electrode and the negative electrode are electrically connected with a positive electrode and a negative electrode of a high-voltage electrode respectively, and the positive electrode and the negative electrode are both connected with double-PTC coordinated regulation units in series; the double-PTC coordinated regulation and control unit comprises a low-trigger-temperature barium titanate positive temperature coefficient thermistor string and a high-trigger-temperature barium titanate positive temperature coefficient thermistor string, and the trigger temperature of the high-trigger-temperature barium titanate positive temperature coefficient thermistor string is higher than that of the low-trigger-temperature barium titanate positive temperature coefficient thermistor string. The crude oil electric dehydration device based on the double PTC coordinated regulation mechanism has the advantages of wide regulation range, high response speed, good stability, self-adaptive regulation and the like, and can be used in the fields of water treatment, electrochemistry, electrolysis and the like.

The invention relates to the technical field of crude oil dehydration in the petroleum industry, and discloses a crude oil electric dehydration device and method with an ungrounded neutral point and an adjustable proportion, the crude oil electric dehydration device comprises a crude oil electric dehydration tank, and is characterized by comprising a high-voltage pulse power supply system and a control unit; an upper polar plate, a middle polar plate and a lower polar plate which are parallel to one another and arranged at intervals are arranged in the crude oil electric dehydration tank; the high-voltage pulse power supply system comprises a high-frequency pulse transformer, two high-voltage ends of the high-frequency pulse transformer are respectively connected with an upper polar plate and a lower polar plate, the upper polar plate is connected with a high-voltage positive polarity, the lower polar plate is connected with a high-voltage negative polarity, a middle polar plate is not grounded, and a neutral point tap is connected with the middle polar plate through a control unit; the control unit is connected with a proportion adjusting circuit, and the control unit is electrically connected with the proportion adjusting circuit. By changing the grounding mode of the middle pole plate, the voltage proportion between the two high-voltage ends of the transformer and the neutral point tap is adjustable, and the overall dehydration efficiency is improved.

A high voltage discharge generating a plasma wave front is disposed within a headspace over an oil-containing liquid in order to create various chemical changes within the headspace, and ultimately within the liquid in order to inactivate various microbes, synthesize new chemicals, speed separation of a mixture, and aid in oil extraction. Such a discharge may be repeated at an optimum duration and duty-cycle to maximize the chemical effects of the non-equilibrium plasma at a substantially lower temperature than for an equilibrium plasma.

The invention relates to a dynamic ultrasonic demulsification device and a demulsification method. The dynamic ultrasonic demulsification device comprises a resonant cavity, a piezoelectric transducer, a multi-stage feeding and discharging system and a real-time monitoring module, the piezoelectric transducers are distributed oppositely in an array mode in the horizontal direction of the outer side of the resonant cavity to form an ultrasonic generation array, and the acoustic axes of the oppositely-arranged piezoelectric transducers coincide in the horizontal direction to form a coherent standing wave field; by means of a coherent standing wave field formed by piezoelectric transducers which are distributed oppositely in an array mode in the horizontal direction, the problem that energy distribution in the ultrasonic propagation direction is asymmetric due to arrangement of the transducers on one side and the problem that the separation efficiency is low due to the fact that sound force and gravity directions conflict in traditional vertical radiation ultrasonic demulsification are solved. Uniform coverage of a sound field in the resonant cavity is ensured, and the inhibition effect of the sound field on the sedimentation process is avoided.

A high voltage discharge generating a plasma wave front is disposed within a headspace over an oil-containing liquid in order to create various chemical changes within the headspace, and ultimately within the liquid in order to inactivate various microbes, synthesize new chemicals, speed separation of a mixture, and aid in oil extraction. Such a discharge may be repeated at an optimum duration and duty-cycle to maximize the chemical effects of the non-equilibrium plasma at a substantially lower temperature than for an equilibrium plasma.

An on-line crude oil water content analyzer is arranged on the outer side of an oil outlet pipe, a vertical probe type emulsion layer water content detector is installed at an opening in one end of the top of a tank body, a plurality of double-frequency power sources are fixedly installed on a tank body platform, and the output ends of the double-frequency power sources are connected with an electrode plate through a high-voltage electric connection device. The input end is connected with a double-frequency power supply control cabinet, and the double-frequency power supply control cabinet is connected with an on-line crude oil water content analyzer and an emulsion layer water content detector through signal lines, so that the water content of crude oil in an oil outlet pipe and the water content condition of an emulsion layer in a tank are monitored in real time; whether frequency or voltage adjustment needs to be carried out or not is intelligently judged according to the water content of outlet crude oil and the water content condition of an emulsion layer in the tank, and fine control is carried out through graded response logic. By means of the control mode, the separation quality can be guaranteed, unnecessary energy consumption can be avoided, and the operation stability and economical efficiency of the system are improved.

The invention relates to the technical field of crude oil pretreatment, in particular to an oil-water interface optimization control method of a crude oil three-phase separator, which comprises the following steps: firstly, separating crude oil according to separation parameters, and selecting different treatment modes according to the thickness of an emulsion film in the separation process; and then periodically calculating an oil-water separation offset characterization coefficient S when the separation parameters are automatically adjusted based on the PID controller, judging whether the separation has a risk or not based on the oil-water separation offset characterization coefficient S, and adaptively correcting various parameters causing the risk when the risk exists. The control method provided by the invention solves the problem that the traditional technology is insufficient in risk pre-judgment, emulsification membrane interference and parameter correction capability, and realizes comprehensive optimization of the crude oil separation process by intelligently detecting and optimizing the emulsification membrane, constructing a water separation offset characterization coefficient and timely correcting various parameters when the quality out-of-control risk is detected, so that the crude oil separation efficiency is improved. The oil-water separation efficiency and stability of crude oil are improved.

A method and a system for purification of oil, wherein the method comprises the steps of: -adding to a contaminated oil provided in a preparation tank a chemical booster for boosting capturing of impurities and / or a separation of phases in the contaminated oil; -waiting for allowing different phases to be separated; -pumping content out from the preparation tank through a fluid connection; -sensing at least one property of the content in the fluid connection; -controlling a valve provided in the fluid connection to transfer the content to a next step in the purification process or to another destination in dependence of the sensed at least one property.

The present invention provides a method (100) for operating a system (1) including a centrifuge (2) for separating at least one liquid phase and a sludge phase from a liquid feed mixture. The method (100) includes alternating between a first and a second operating mode. The first operating mode includes step a) feeding (101) the liquid feed mixture to be cleaned to the centrifuge (2), the liquid feed mixture having a first temperature, and step b) discharging (102) at least one separated liquid phase from the centrifuge (2). The second operating mode includes step c) stopping (103) the supply of the liquid feed mixture to the centrifuge (2) and step d) reducing (104) the temperature of the liquid feed mixture to a second temperature and / or reducing (105) the flow rate of the liquid feed mixture. The present invention also provides a system (1) for separating at least one liquid phase and a sludge phase from a liquid feed mixture.

The present invention relates to a system for removing water from oil from an oil supply, where the system comprises a housing comprising an inner opening, an oil inlet tube connecting the oil supply and an oil inlet of the housing, where the oil inlet tube comprises an inlet pump adapted to provide a flow of oil in a direction from said oil supply to said oil inlet, an oil outlet tube connecting an oil outlet of the housing and the oil supply, where the oil outlet tube comprises an outlet pump adapted to provide a flow of oil in a direction from said oil outlet to said oil supply, an air inlet tube providing a gas connection between an air supply unit and an air inlet of the housing, and an air outlet tube providing a gas connection between an air outlet of the housing and the air supply unit, where said outlet pump is adapted to provide a flow at a higher pumping flow rate than the pumping flow rate provided by said inlet pump. The invention further relates to a method of removing water from oil from an oil supply.

The application discloses an oil-gas-water treatment device and a working method thereof. The oil-gas-water treatment device comprises a treatment tank group, a heater and a pressure balance component. The treatment tank group comprises a first treatment tank and a second treatment tank. The first treatment tank comprises a first tank body, a partition and an oil collecting component. The second treatment tank comprises a second tank body, an oil guiding component and a connecting assembly. The connecting assembly comprises a first connecting piece. The pressure balance component comprises a connecting assembly and a leveling assembly. The connecting assembly comprises a connecting piece and a guide part. The connecting piece comprises a connecting main body and an abutting part. The leveling assembly comprises a leveling piece, a floating ball and a linkage. The application separates oil and water based on the density difference of oil and water by using gravity, and transfers oil liquid by using gravity. The oil liquid transferred by gravity is broken and dewatered by heating. The gas generated by heating the oil liquid is used to apply a predetermined pressure on oil and water, and the stability of oil and water is increased.

A method for automating wash water rates into a desalter comprises the steps of collecting historical dry crude rates; collecting historical wash water rates; collecting historical salt content amounts, where the historical dry crude rates, historical wash water rates, and historical salt content amounts are from a historical time period; determining a percent wash water from the historical wash water rates and historical dry crude rates; developing a salt content versus percent wash water curve using the historical salt content amounts and percent wash water; developing a salt content predictive equation from the salt content versus percent wash water curve; programming the salt content predictive equation and the percent wash water equation into a distributed control system; and regulating a current wash water rate based on an expected salt content determined from the salt content predictive equation.

The invention belongs to the technical field of oil purification, and particularly relates to a high-efficiency oil purification method based on a high-voltage electric field adsorption method, and the method comprises the following steps: introducing an oil product to be purified into an oil purification container; a high-voltage alternating electric field is applied to the interior of the oil purification container, so that impurities in the to-be-purified oil product are ionized or polarized, non-water impurities pass through a filter material arranged in the oil purification container to be adsorbed to an electrode, and moisture in the impurities is coalesced and separated under the action of the electric field to form a collectable liquid accumulation layer; and through a filter material self-cleaning regeneration technology, adsorbed non-water impurities and moisture are directionally moved to a drain outlet of the oil purification container to be discharged, so that the purification of an oil product is realized. The technical problems that in the prior art, an oil purification mode is low in efficiency, poor in purification effect and high in purification cost are solved, the integrated purification function design is adopted, the function that one oil filtering device purifies multiple oil products is achieved, meanwhile, the filter material has the self-cleaning regeneration function, the service life of the filter material is prolonged, and the operation and maintenance cost is saved.

The vacuum heating tank comprises a vacuum tank upper shell and a vacuum tank lower shell, and further comprises an electric heating film inner barrel arranged in the vacuum tank lower shell, at least one layer of electric heating film is arranged on the electric heating film inner barrel in a winding mode, and the electric heating film inner barrel is arranged in the vacuum tank lower shell. A flow guide net is tightly wound on the oil liquid incoming flow side of the electric heating film, and the flow guide net and the electric heating film jointly form a detachable heating module; an extraction opening is formed in the top of the vacuum tank upper shell, and an oil inlet is formed in the side wall of the vacuum tank upper shell; oil enters from the oil inlet, is distributed by the flow dispersing device, enters from an oil inlet surface formed by the winding end surfaces of the electric heating film and the flow guide net, and sequentially flows through the surfaces of the flow guide net and the electric heating film from top to bottom. According to the invention, low-temperature, uniform and planar heating of the oil product is realized, so that the risk of cracking and deterioration of the oil product caused by local overheating is fundamentally eliminated, and meanwhile, the water evaporation efficiency and stability are greatly improved.

The present disclosure describes a computer-implemented method that includes: monitoring, at a gas oil separation plant (GOSP) facility that includes a high-pressure production trap (HPPT) apparatus and a Dual Frequency Desalting (DFD) device, a plurality of parameters, wherein the plurality of parameters include one or more current measurements from the DFD device, as well as gas temperature and demulsifier concentration from the HPPT; based on the one or more current measurements, determining a rate of change of the one or more current measurements from the DFD device; and in response to the rate of change as well as the gas temperature and the demulsifier concentration, adjusting a demulsifier dosage being injected at the HPPT apparatus.

The invention relates to the field of oil reservoir development, in particular to a high-voltage electric field synergistic centrifugal effect crude oil efficient dehydration device and a using method. The problems that an existing water-containing oil sample in a laboratory is poor in dehydration effect and long in dehydration time are mainly solved. The bottom of the dehydration kettle (4) is connected with a centrifugal motor (1), a plurality of dehydration tanks (8) which are uniformly distributed are arranged in the dehydration kettle (4), the bottoms of the dehydration tanks (8) incline towards the outer side, and metal sheets (3) are arranged on the inner wall of the dehydration kettle (4) and are connected with a negative electrode of a power supply; the upper end of the dewatering tank (8) is provided with an electrode tank cover (11), the electrode tank cover (11) is connected with a cylindrical electrode (12), the cylindrical electrode (12) is located in the dewatering tank (8), and the cylindrical electrode (12) is connected with the positive electrode of a power supply. The high-voltage electric field synergistic centrifugal effect crude oil efficient dehydration device is suitable for various complex oil samples, and rapid and efficient dehydration is achieved under the conditions that oil sample composition is not changed and oil sample layering is not caused.

This invention discloses a hydrocarbon phase deacidification device and method for the petrochemical industry, suitable for the deep purification of acidic hydrocarbon emulsions. The device includes a vertical / horizontal tank, integrating an intercepting wire mesh, a heterogeneous particle demulsification and deacidification unit, a primary / secondary series coalescing and settling unit, and a liquid collection and discharge unit. It is equipped with a multi-functional interface for material inlet / outlet and online backwashing. The heterogeneous particle bed exhibits a gradient distribution in particle size and wettability. The coalescing and settling unit includes a heterogeneous fiber module and a tapered perforated corrugated plate to enhance settling. The method involves separating the acidic hydrocarbon phase through demulsification, coalescence, and settling. The hydrocarbon phase is discharged from the top, and the acid phase is discharged from the bottom, with an integrated gas-water / steam online backwashing and regeneration process. This invention offers high separation accuracy, a compact and flexible structure, real-time monitoring and automated operation, long continuous operation cycles, and a deacidification efficiency exceeding 98%.

The invention relates to the technical field of petrochemical engineering oil refining pretreatment, and discloses a high-temperature stable type ultrasonic vibration system device for crude oil electro-desalting ultrasonic demulsification. The device core comprises a titanium alloy amplitude-change pole and a plurality of transducers. A reducing structure is arranged in the middle of the amplitude-change pole to block heat conduction; the multiple transducers jointly excite the amplitude-change pole, and power sharing is achieved. According to the method, the heat load of a single transducer is reduced by controlling the multi-head transducers to work alternately. Through structure optimization and power collaborative management, the technical problems that a piezoelectric ceramic transducer is prone to depolarization and short in service life in a high-temperature crude oil environment are effectively solved, the stability of the device is remarkably improved, the service life of the device is remarkably prolonged, and the device is particularly suitable for the large-scale industrial crude oil electro-desalting process.

The present invention relates to a method for controlling chemical demulsification in flow comprising: generating a sound pulse (Apulser); receiving a modified sound pulse (Areceiver); processing the modified sound pulse (Areceiver), generating inputs for a controller; and controlling, by means of a controller, the parameters related to the emission of demulsifier. In addition, the invention also comprises a device for controlling chemical demulsification in flow.

The invention provides a preparation method of a crude oil electric dehydration electrode film and a preparation method of an electric field response film, and the preparation method comprises the following steps: mixing a functional material with a solvent to form an initial dispersion liquid; mechanically stirring the initial dispersion liquid in an oil bath at normal temperature to obtain a uniform solution; uniformly mixing the solution; coating a copper sheet with the solution, and putting the copper sheet into a drying oven for curing treatment; measuring the dehydration rate; the functional material is selected from at least one of matrix resin, neutral resin, PEI polyetherimide, PMI polymethacrylimide foam and aldehyde ketone resin, and the concentration of the functional material is 0.1-0.2 g / ml; the solvent is N, N-dimethyl formamide (DMF). The method further comprises the steps of obtaining a crude oil sample moisture content historical data sequence, processing the sequence by adopting an autoregressive integral moving average model, extracting moisture content change trend feature vectors including a mean value, a variance and a trend slope, and obtaining a feature vector set; according to the optimized dispersion liquid proportioning scheme, a gradient optimization algorithm is adopted to calculate a mechanical stirring speed and duration sequence, a stirring parameter control sequence containing a plurality of time nodes is generated, stirring speed and duration are contained every fixed time interval, and a stirring control sequence is obtained; according to the uniform mixed solution, a temperature control curing method is adopted for treatment, a curing time and temperature curve is generated according to a pre-established material thermal characteristic curve, the temperature is increased to a preset temperature and kept for a fixed time length, and an initial cured film structure is obtained.

The invention discloses a multi-field coupled condensate oil demulsification system which comprises a centrifugal separator, an electric coalescence separator, an ultrasonic separator and a settling tank, the centrifugal separator is arranged on the front side of the electric coalescence separator in a communicating mode, the electric coalescence separator is arranged on the front side of the ultrasonic separator in a communicating mode, and the settling tank is arranged on the front side of the ultrasonic separator. The ultrasonic separator is arranged on the front side of the settling tank, the settling tank can also be communicated and connected with a slop oil tank, a sludge tank and a produced water tank, and the produced water tank and a sewage tank are also communicated and arranged on the front side of the centrifugal separator; through the cooperation of the coupled swirling flow field, the electric field and the ultrasonic wave, the use of the demulsifier can be reduced, the demulsification effect can be enhanced, the recovery rate of condensate oil can be improved, and meanwhile, the separation efficiency of oil, solid scum and water can be enhanced.