71results about "Dewatering/demulsification regulation/control" patented technology

The utility model discloses an alkali wash demulsification system for high carbon number Fischer-Tropsch oil, which comprises an alkali wash demulsification device, a first liquid separation device, a second liquid separation device, a water washing device and a neutralizing device, the alkali wash demulsification device is communicated with the first liquid separation device, the water washing device and the neutralizing device are both communicated with the first liquid separation device, and the neutralizing device is communicated with the second liquid separation device. A liquid inlet of the second liquid separation device is communicated with the washing device, and a liquid outlet of the second liquid separation device is communicated with the neutralizing device. By adopting the alkali washing demulsification system, not only is the yield of oil products effectively improved, but also the acidity of the oil products after water washing is effectively reduced; in addition, the demulsification system is simple in structure, easy to operate and worthy of vigorous popularization and application.

The invention belongs to the technical field of oil field gathering and transportation systems, and particularly relates to a combined crude oil dehydration and desalination treatment device which comprises a shell, a pretreatment chamber is arranged at one end in the shell, an ultrasonic demulsification chamber is arranged on one side of the pretreatment chamber, and an electric dehydration settling chamber is arranged on one side of the ultrasonic demulsification chamber. Through the combined design of ultrasonic waves and an electric field, the efficiency and adaptability of crude oil dehydration and desalination are improved, oil-in-water and water-in-oil particles can be effectively opened through the mechanical oscillation effect generated by the ultrasonic generator in the ultrasonic demulsification chamber, free-state oil drops and water drops are formed, and the oil-in-water and water-in-oil particles can be effectively removed. An alternating-current electric field and a direct-current electric field which are respectively formed by the grid plate and the vertical electrode plate can be used for coalescing and settling water drops in oil under the actions of dipole coalescence, oscillation coalescence, electrophoresis coalescence and the like, and due to the synergistic action of the double electric fields, the quality of the dehydrated crude oil is improved, the volume fraction of water in the crude oil is reduced, the power consumption is reduced, and the stability of the electric fields is enhanced.

A computer implemented method that enables artificial intelligence based demulsifier control for AC or modulated AC / DC electrostatic coalescers is described. The method includes monitoring parameters associated with the GOSP facility and inputting the parameters to a trained machine learning model that outputs a minimum HPPT separation efficiency. The method includes determining a target HPPT separation efficiency based on the minimum HPPT separation efficiency. Additionally, the method includes adjusting a demulsifier dosage being injected into the HPPT apparatus to separate dry oil at the target HPPT separation efficiency.

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.

A method and an oil purification system for purification of contaminated oil, wherein said contaminated oil comprises at least a light phase comprising oil and a heavy phase comprising water, said method comprising the steps of: - adding droplets of heavy phase into the contaminated oil; and - separating the light phase and the heavy phase of the contaminated oil in a separation device.

The utility model provides crude oil deep electro-desalting equipment which comprises an electro-desalting tank, the electro-desalting tank is horizontally arranged, a mixer and a drainage pipeline are respectively arranged at the bottom of the electro-desalting tank, an electrode plate is arranged at the upper position in the electro-desalting tank, a dilution water distributor is arranged above the electrode plate, and the dilution water distributor is connected with a dilution water inlet pipeline. A crude oil outlet pipeline is arranged at the top of the electric desalting tank, one end of the mixer is connected with the electric desalting tank, the other end of the mixer is connected with a crude oil inlet pipeline and a demulsifier inlet pipeline, and a mixing valve is further arranged on the mixer. According to the utility model, fresh water is injected into the top of the vertical polar plate by adopting a countercurrent dilution water injection mode, and forms countercurrent motion with purified crude oil which just leaves a strong electric field and is removed. The injection of the countercurrent dilution water makes the most fresh salt-free water contact with the cleanest crude oil, so that the utilization rate of the dilution water is highest. An electric desalting tank with a smaller size and fewer electric desalting stages can be used, and the salt content after desalting is stably smaller than a specified value or even lower.

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 utility model provides an automatic dehydration system of an oil tank, including: light oil storage tank, buffer water cutting tank, explosion-proof control box and drainage flow cell, wherein light oil storage tank is connected with buffer water cutting tank through storage tank drainage pipe, the storage tank drainage pipe is equipped with first flow regulating valve and preposition sensor, buffer water cutting tank is equipped with middle sensor, and the explosion-proof control box is equipped with explosion-proof control box. A siphon drainage pipe is installed in the buffering water draining tank, a water outlet of the siphon drainage pipe is communicated with a water inlet of the drainage flow cell, and a first anti-explosion valve, a second anti-explosion valve, a second flow adjusting valve and a flow indicator are sequentially installed on the connecting section of the siphon drainage pipe and the drainage flow cell in the liquid flowing direction. And a rear sensor is arranged in the drainage flow cell. According to the automatic dehydration system for the oil tank, the secondary buffering and secondary layering design of the buffering water cutting tank and the siphon drainage pipe is adopted, the overall sensitivity and stability of the system are high, the anti-explosion control box is arranged, and the overall safety of the system is high.

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.

The present invention relates to a process and system capable of processing large volumes of petroleum samples to withdraw a sufficient amount for water characterization in petroleum, without the need for sample fractionation and subsequent volume recomposition. This reduces the number of steps and processing time, with low risk of contamination or decharacterization due to losses of important fractions. This process is carried out through the system consisting of the insulated and heated reservoir (1), temperature transmitter (2), temperature controller (3), electric resistance (4), flow control valve (5), blocking valves (6a; 6b; 6c; 6d), temperature indicator (7), self-desludging stacked plate centrifuge (8), oil sampling point (9), water sample extraction system (10), capillary tube (11), vacuum pump (12), water sample container (13), oil outlet (15), water inlet for activating the desludging (16), cleaning fluid inlet (17), outlet or vent (18).

The microwave crude oil demulsification oil-water three-phase separation metering device comprises a vertical separation tank, the upper portion of the vertical separation tank is connected with a gas chamber, and the top of the gas chamber is connected with a gas outlet pipeline; a liquid inlet, a water outlet and an oil outlet are further connected to the side wall of the vertical separation tank, a liquid inlet inner vertical pipe is further arranged in the vertical separation tank, and the lower end of the liquid inlet inner vertical pipe is connected with the liquid inlet; the upper end of the liquid inlet inner vertical pipe and the side wall of the vertical separation tank below the oil outlet are respectively connected with a microwave radiation heating device; crude oil which is sprayed out and needs to be output from a tank is heated at an outlet, namely the upper end, of a liquid inlet inner vertical pipe and the lower end of an oil outlet, heating temperature rise and demulsification dehydration are achieved, demulsification oil-water separation of the crude oil is achieved by means of the two characteristics of the heat effect and the non-heat effect of microwaves, oil and water are separated in a natural precipitation mode, and the oil-water separation effect is achieved. And heating can be easily controlled to stop after power failure, and thermal inertia and pollution-free carbon emission are avoided.

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.

A system comprising a pretreated hydrocarbon feedstock supply, wherein said pretreated hydrocarbon feedstock supply comprises at least hydrocarbon feedstock and dissolved salts; a wash water supply, wherein said wash water supply comprises at least water; an alkalinity modifier supply, wherein said alkalinity modifier supply comprises at least one alkalinity modifier or solutions thereof; a desalting vessel; a desalted crude outlet, wherein said desalted crude outlet comprises hydrocarbon feedstock with less dissolved salts by weight than the hydrocarbon feedstock in the pretreated hydrocarbon feedstock supply; and a wash water brine outlet, wherein said wash water brine outlet comprises water with more dissolved salts by weight than the water in the wash water supply.

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.

According to the multi-form adjustable electric dehydration and electric desalting experimental device, one end of a tank body adopts a detachable end socket, the other end of the tank body adopts a high-voltage electricity leading-in connecting end, and a multi-channel high-voltage electricity leading-in connecting end is vertically arranged on the inner side of an arc sealing end, so that the multi-form adjustable electric dehydration and electric desalting experimental device can be connected with different power supply forms; comprising an AC power supply, a DC power supply, an intelligent response power supply and a high-frequency power supply. A flange ring is arranged on the outer side of the conduction connecting end in a surrounding mode, a plug-in flange cover is arranged on the outer side of the flange ring in a sealed installation mode, through the multi-form electric field adjusting end, electrode plates of different structural forms can be designed and installed according to different experiment requirements, and different positions of the electrode plates in the experiment tank can be adjusted up and down, so that the experiment efficiency is improved. The desalting and dewatering effects under different electric field positions are verified, and various demulsifiers of different types are added, so that various variable experiments are further tested, and the device with the best electric field arrangement and power supply form in the electric dewatering and desalting tank is selected.

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 for protecting coalescer elements is provided. The method comprises: providing a device comprising a vessel that contains at least two coalescer elements each including an electrode; feeding a mixture into the vessel; supplying AC voltage to the electrodes; and time-resolved determining an electrical impedance of at least one of the electrodes and determining whether the electrical impedance has been changed within a predetermined time period of at most 1 second by more than a predetermined threshold of at least 0.25%. If so, a voltage supplied to the at least one of the electrodes is quenched or reduced to at most 70% of the AC voltage supplied to the electrode at a time of determining a change of the electrical impedance until at least one of: the change of the electrical impedance lies within a first predetermined range and the electrical impedance lies within a second predetermined range.

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.