849 results about "Produced water" patented technology

The invention relates to the technical field of sewage treatment, and discloses an advanced treatment method and device for ship oily wastewater, and the method comprises the following steps: carrying out preliminary filtration on the ship oily wastewater to remove suspended solids and particulate matters so as to obtain first oily wastewater; the first oily wastewater is subjected to coalescence separation treatment, floating oil, dispersed oil and a small part of emulsified oil in the wastewater are removed, the oil content in the wastewater is reduced to 500 ppm or below, and second oily wastewater is obtained; the second oily wastewater is subjected to cross-flow ultrafiltration deep treatment, emulsified oil and dissolved oil are intercepted, produced water and concentrated water are obtained, and the concentrated water serves as third oily wastewater; the third oil-containing wastewater flows back to the first oil-containing wastewater, and discharged water is obtained after the produced water is detected to be qualified. The invention provides a primary filtration, coalescence separation and ultrafiltration three-stage circulating filtration method, emulsified oil and dissolved oil can be efficiently separated and removed, oil resource recovery is realized, and membrane pollution is reduced.

The utility model belongs to the technical field of sewage treatment, and particularly relates to a coalescence air floatation oil removal device for oil and gas field wastewater treatment, which is characterized in that a cyclone sand remover, an oil particle coalescence layer, a micro air floatation device, an oil discharge device and a water discharge pipe are sequentially arranged in a shell from bottom to top, and an exhaust device is arranged at the upper part of one side of the shell; a sewage inlet pipe is arranged on the lower portion of one side of the shell and connected to the feeding end of the cyclone desander. Oily sewage passes through the cyclone sand remover to remove large-particle-size silt, then passes through the oil particle coalescence layer, tiny oil particles gradually form an oil film on the surface of a coalescence material, after the oil film reaches a certain thickness, the oil film is deformed into large oil droplets which are sufficient to be separated and rise from a water phase, and then oil drops and suspended flocs in the oily sewage are removed through the micro air flotation device. Finally, floating oil enters the oil discharging device to be discharged, the oil-removed sewage is discharged through the water discharging pipe, oil-water separation is completed, the oil removal purpose is achieved, the oil removal effect is better, the sewage treatment effect is improved, and the water quality of produced water is improved.

The invention discloses an unattended tertiary oil recovery injection allocation system. A produced water treatment module receives oil well produced water, treats the oil well produced water and then provides softened water for a system; the dry powder dispersing, dissolving and curing module is used for mixing polymer dry powder with softened water treated by the produced water treatment module to form a polymer mother solution and curing the polymer mother solution; the liquid medicament storage and feeding module is used for storing, preparing and accurately adding liquid medicaments such as surfactants and bactericides; the mother liquor feeding and watering module conveys the polymer mother liquor to the injection module at a constant pressure, and meanwhile, softened water and a surfactant target solution in a set proportion are doped; the injection module mixes a polymer solution, water and an agent provided by the mother liquor feeding and watering module and then injects the mixture into the stratum at constant pressure; and the monitoring communication module controls the injection allocation system through the PLC. The system has the beneficial effects that the whole production process is automatically operated under the scheduling of the monitoring communication module, the operation state of corresponding equipment can be timely adjusted in case of special situations, the management efficiency is improved, and the maintenance cost is reduced.

The invention relates to a marine reverse osmosis seawater desalination equipment system which comprises a raw water pretreatment module, a primary reverse osmosis module, a secondary reverse osmosis module and an energy recovery module, raw water is preliminarily filtered by the raw water pretreatment module, then pressurized by the first-stage high-pressure pump and injected into the first-stage reverse osmosis module to generate first-stage high-pressure concentrated water, and the first-stage high-pressure concentrated water pressurizes low-pressure raw water treated by the raw water pretreatment module through the energy recovery module, then pressurized by the pressure lifting pump and injected into the first-stage reverse osmosis module; the first-stage high-pressure concentrated water is pressurized by a second-stage high-pressure pump and injected into a second-stage reverse osmosis module to generate second-stage high-pressure concentrated water, and the second-stage high-pressure concentrated water is recycled; according to the equipment system, the TDS of produced water is detected, and the pressure of the primary reverse osmosis module and the pressure of the secondary reverse osmosis module are controlled, so that the equipment system realizes maximization of produced water, efficient integration of the system, complete functions, high water production efficiency, full-automatic control and wide application scene under the condition that the equipment system meets the quality requirement of the produced water.

The present disclosure provides processes for removing hydrocarbons, oil coated solids, and suspended solids from a separated water stream produced from a produced water source. In particular, the methods comprise subjecting the separated water stream to a centrifugal separation followed by filtration.

The invention discloses sewage treatment equipment and method for oil field thickened oil produced water. The equipment comprises pretreatment equipment, main body equipment, dissolved gas supply equipment and a water outlet pump. Main body equipment comprises barrel equipment, and a flotation cyclone used for achieving the functions of dissolved air flotation and cyclone separation at the same time, separating out large-particle suspended solids through centrifugal force difference and achieving floating of oil drops through microbubble adsorption surfaces is sequentially arranged on the inner portion of the barrel equipment from top to bottom. The coalescence filler layer is made of oleophylic and hydrophobic core-shell structure fibers, and emulsified oil is promoted to polymerize and break emulsion through surface energy difference; and the inclined plate sedimentation device adopts an inclined tube labyrinth surrounding structure, performs deep sedimentation by utilizing a laminar flow principle, and further removes oil drops formed after coalescence.

A method to perform oil in produced water analysis allows measuring the large volume of oil in produced water reliably. In the method, a time-series and physics based machine learning model of a gas oil separation plant is generated, advisory actionable items for maintaining a crude oil quality within a pre-determined threshold are generated based on machine learning model coefficients and outputs of soft sensors, and then the advisory actionable items are presented to a user.

The invention discloses a temperature-resistant anti-swelling agent for thermal recovery of offshore oilfield thickened oil and a preparation method of the temperature-resistant anti-swelling agent. The temperature-resistant anti-swelling agent comprises the following components in percentage by mass: 15%-25% of a micromolecular cationic functional single agent, 10%-15% of a macromolecular cationic functional single agent, 1.0%-1.5% of a surface modifier, 10%-15% of an auxiliary agent and the balance of water. The temperature-resistant anti-swelling agent disclosed by the invention can tolerate a use environment of 300 DEG C, tolerates oil reservoir produced water with the total mineralization degree of less than or equal to 20000 mg / L, does not damage a stratum, and protects the environment. When a high-temperature anti-swelling agent working solution with the concentration of 4% is used for aging for 24 hours at the temperature of 300 DEG C, the anti-swelling rate exceeds 90%, and the washing resistance exceeds 90%.

The invention relates to the technical field of oil and gas field produced water, and discloses a method for degrading organic matters in oil and gas field produced water through electrochemical lithium extraction coupled with electrooxidation. The method comprises the following steps: (1) preparing a hydrophilic-oleophobic lithium ion sieve electrode; (2) electrochemical lithium extraction is coupled with electrooxidative degradation of organic matters, wherein a first electrochemical reaction system is constructed, and the first electrochemical reaction system comprises an anode, a cathode, a sealed electrolytic tank, a wire and a voltage-stabilized direct-current power supply; and (3) electrochemical enrichment lithium coupling hydrogen evolution: constructing a second electrochemical reaction system, wherein the second electrochemical reaction system comprises an anode, a cathode, a sealed electrolytic tank, a wire and a voltage-stabilized direct-current power supply. According to the method for degrading the organic matters by coupling electrochemical lithium extraction and electrooxidation of the oil and gas field produced water, circulation of lithium extraction and release and synchronous degradation of organic pollutants can be realized.

The invention relates to the technical field of discharged water recycling, and discloses a discharged water recycling device based on an RO concentrated water system, which comprises a buffer tank, the buffer tank is connected with an ultrafiltration device, the ultrafiltration device is connected with a precision filter, the precision filter is connected with an RO device, the RO device is connected with a nanofiltration device, and the RO device is connected with a product water tank. The concentrated water is filtered by the RO device and then is divided into two paths of produced water, one path is recycled water, the recycled water enters a product water tank after the produced water conductivity and the produced water flow are detected, and the other path is re-concentrated water, and the re-concentrated water enters the nanofiltration device after pressure detection. Excess pressure of the concentrated water RO device is utilized to enter the nanofiltration device, nanofiltration is not provided with a booster pump, energy conservation and consumption reduction are achieved, the structure is simple and reasonable, the nanofiltration device is independent of original main system equipment, normal operation of the main equipment is not affected when the equipment breaks down or stops running, the water treatment capacity of a preceding-stage device can be reduced, waste water discharge is reduced, and the energy utilization rate is increased. The consumption of tap water in the water production process is reduced.

The embodiment of the invention provides a cascade heating superheated steam generation system and a control method thereof, and belongs to the technical field of energy engineering and thermal power. The system comprises: an evaporation device provided with a plurality of heat exchangers, wherein the evaporation device is used for treating preheated produced water into wet saturated steam; wherein the series-parallel connection relation between the heat exchangers in the evaporation device is adjusted based on real-time heat supply demand information; the steam conversion device is used for converting the wet saturated steam into superheated steam for steam injection; the control device is used for determining the serial numbers of the heat exchangers participating in heat exchange and the series-parallel connection relation of the heat exchangers participating in heat exchange based on the real-time heat supply demand information; the fused salt conveying device sequentially passes through the steam conversion device and the evaporation device and is used for providing a heat source for the steam conversion device and the evaporation device. According to the scheme, the method adapts to complex heat supply demand scenes, and therefore an efficient, flexible and intelligent solution is provided for thick oil steam injection.

The invention discloses a lime coagulation and clarification treatment system and method based on intelligent dosing, and belongs to the technical field of water treatment.The system comprises an efficient softening coagulation and clarification unit and an intelligent monitoring unit, a lime milk intelligent preparation unit, an intelligent dosing control unit and a sludge dewatering unit which are connected with the efficient softening coagulation and clarification unit. The efficient softening, coagulation and clarification unit is formed by sequentially connecting a wastewater regulating tank, a first-stage rapid mixing tank, a second-stage slow flocculation and concentration tank, a tubular membrane intelligent filtering device and a produced water neutralization tank; the intelligent monitoring unit collects incoming water and produced water data and transmits the data to the intelligent dosing control unit; the intelligent lime milk preparation unit is used for preparing and adding lime milk; the intelligent dosing control unit realizes intelligent dosing; and the sludge dewatering unit is used for treating the discharged sludge and returning the sewage. Intelligent monitoring, self-adaptive control, prediction algorithm and softening coagulation clarification are realized, the problems of inaccurate dosing, large water quality fluctuation and low automation degree of a traditional system are solved, and the system is suitable for scenes such as reclaimed water deep treatment and industrial wastewater treatment.

The invention relates to the technical field of bearings, and provides an anti-impact hydrostatic bearing air supply system which comprises a first air supply subsystem and a second air supply subsystem, the first air supply subsystem comprises a first pipeline, a first check valve and a reaction mechanism, the reaction mechanism is connected with the first pipeline, and the first check valve is arranged on the first pipeline; the second gas supply subsystem is connected with the first pipeline and is used for being connected with the hydrostatic bearing; the reaction mechanism can generate chemical reaction when the hydrostatic bearing bears strong external impact, and water vapor is generated and enters the hydrostatic bearing. According to the anti-impact air supply system for the hydrostatic bearing, when the hydrostatic bearing bears severe impact, chemical reaction occurs in the reaction mechanism, a large amount of high-temperature and high-pressure water vapor is generated, the water vapor pushes the first check valve to be opened so as to enter the hydrostatic bearing, the bearing capacity of the hydrostatic bearing is improved, and collision between the rotor and the hydrostatic bearing is avoided.

The invention relates to a self-produced water humidifying air-cooled fuel cell system and a working method thereof. The system comprises a hydrogen path subsystem, an air path subsystem and an air-cooled galvanic pile, liquid hydrogen provided by a hydrogen source sequentially passes through the high-pressure valve assembly and the liquid hydrogen vaporizer and then enters from an anode inlet of the air-cooled galvanic pile to participate in a reaction; the fan is arranged outside an air inlet of the air-cooled electric pile and is used for feeding external air into the air-cooled electric pile, and the ultrasonic atomizer is used for humidifying air entering the pile; the liquid hydrogen vaporizer is arranged outside an air outlet of the air-cooled galvanic pile; the water storage tank is arranged below the liquid hydrogen vaporizer, and the water pump is used for pumping water out of the water storage tank and supplying the water to the ultrasonic atomizer. Liquid water in the stack air can be condensed by cold energy of the liquid hydrogen, and the liquid water is collected in the water storage device to serve as a water source of the ultrasonic atomizer, so that self-produced water humidification of the cathode of the air-cooled stack is realized on the premise of not adding a complex humidification system.

The invention discloses an all-working-condition air water production unit, which belongs to the technical field of air water production, and comprises a high-humidity air inlet channel, a low-humidity air inlet channel, a channel switching device and a water production channel, and the high-humidity air inlet channel and the low-humidity air inlet channel are both communicated with the water production channel; air flowing out of the high-humidity air inlet channel or the low-humidity air inlet channel enters the water production channel so that the water production channel can produce water. According to the invention, the high-humidity operation mode or the low-humidity operation mode is automatically switched according to the air inlet humidity. A traditional unit can only operate under a single working condition. According to the invention, the optimal energy efficiency and water production rate can be kept in different environments.

The utility model relates to an oilfield produced water treatment system which comprises two stages of air floatation tanks, a coagulating sedimentation device, an oxidation tank, a high-power concentration membrane device and a forced evaporation device which are connected in sequence, a floating oil water outlet of a first-stage air floatation tank is connected with a second-stage air floatation tank, and a clear liquid water production port is connected with the coagulating sedimentation device; the coagulating sedimentation device comprises a tubular membrane system and a solid-liquid separation device, a liquid inlet of the tubular membrane system is connected with the primary air floatation tank, a mud-containing water outlet is connected with the solid-liquid separation device, and a permeated water production port is connected with the oxidation tank; the oxidation pond is provided with two stages, and an outlet of the second-stage oxidation pond is connected with the high-power concentration membrane device; the high-power concentration membrane device comprises a disc-type reverse osmosis membrane and a disc-type nanofiltration membrane, an inlet of the disc-type reverse osmosis membrane is connected with the secondary oxidation pond, a concentrated water outlet is connected with the disc-type nanofiltration membrane, and an outlet of the disc-type nanofiltration membrane is connected with the forced evaporation device; according to the oil field produced water treatment device, advanced oxidation and disc-type membrane processes are coupled, and oil field produced water can be effectively treated and can be recycled.

The embodiment of the invention discloses a core changing control method for a filter core of a water purifier, and relates to the technical field of water purifiers, the method comprises the following steps: obtaining current raw water concentration data and at least one period operation data corresponding to the filter core of the water purifier, the period operation data comprising booster pump working time information and corresponding real-time raw water temperature information; according to the current raw water concentration data, determining corrected filter element service life information corresponding to the filter element of the water purifier, and according to the current raw water concentration data and the raw water temperature information, determining corrected water production flow velocity information corresponding to the operation data of each period; and based on each piece of corrected water production flow velocity information and the booster pump working time information, determining accumulated water production information corresponding to the filter element of the water purifier, so as to prompt the filter element of the water purifier to change the filter element based on the corrected filter element service life information and the accumulated water production information. The actual use condition of the filter element can be evaluated more accurately, and the situation that the filter element is prompted to be replaced too early or too late is avoided.

The utility model provides a process system for recycling electroplating comprehensive wastewater, which relates to the technical field of wastewater treatment and is characterized in that a liquid inlet of a primary electrodeionization device is communicated with a primary wastewater treatment unit, and a fresh water outlet of the primary electrodeionization device is communicated with a secondary wastewater treatment unit; a concentrated water outlet of the first-stage electrodeionization device is communicated with the second-stage electrodeionization device; a fresh water outlet of the secondary electrodeionization device is communicated with the primary electrodeionization treatment device, and a concentrated water outlet of the secondary electrodeionization device is communicated with the solid-liquid separation device; a liquid outlet of the solid-liquid separation device is communicated with the evaporation device; the evaporation device comprises a condensed water outlet and a byproduct salt outlet, and the condensed water outlet is communicated with the secondary wastewater treatment unit; a produced water outlet of the secondary wastewater treatment unit is communicated with the produced water collecting tank; a waste liquid outlet of the second-stage wastewater treatment unit is communicated with a second-stage electrodeionization device, so that pollutants such as heavy metal ions and organic matters in wastewater can be removed, and cyclic utilization of water resources and recovery of salt resources are realized.

The invention relates to the technical field of oil field produced water waste heat and gas utilization, in particular to an oil field produced water multi-energy fusion air heat exchange waste heat utilization device and process method. According to the technical scheme, an air-fuel integrated heat pump is installed in the middle of a front box of a container pry, three-phase power of a gas generator set is connected to a compressor through a line and a grid-connected controller, and flue gas is connected with a flue gas heat exchanger through a pipeline; heat generated by the gas generator set is connected with the economizer through cooling liquid for heat dissipation, and the energy storage water tank is connected with a condenser of the air source heat pump through a pipeline and a water pump. The wet curtain system is installed on the side face of the container pry and located on one side of an evaporator of the air source heat pump, and the solar water heater is installed on the top of the container pry and provides hot water for the spraying system. The device has the beneficial effects that low-grade produced water is subjected to heat exchange through air, the defect that a plate-shell heat exchanger is blocked by the produced water is overcome, and comprehensive utilization of waste heat, waste gas, solar energy and air energy of the produced water is achieved.

The invention discloses a water purification process based on a pervaporation desalination technology, which comprises the following steps: firstly, raw water is guided to a raw water buffer tank, and water quality parameters are monitored through built-in conductivity, temperature and liquid level sensors; secondly, the circulation of raw water in the system is realized by utilizing a raw water circulating pump; then, the raw water is preheated by a shell pass of the pre-condenser and then is fed into a hot-end heat exchanger of the heating and condensing coupler to be heated; then, the heated raw water enters a pervaporation desalination membrane element to complete a pervaporation process, concentrated water returns to the raw water buffer tank to continue to circulate, and the raw water becomes steam under the action of a vacuum pump and enters a tube pass of a pre-condenser to be primarily condensed; then, the primarily condensed water vapor is further condensed by heating a cold end heat exchanger of the condensation coupler; finally, purified water formed by condensation is collected in a produced water storage tank; the process can effectively remove salt in water and improve the utilization rate of water resources.

The disclosure relates to methods for determining an amount of seawater, an amount of aquifer water, and an amount of original reservoir water in a produced water sample using oxygen and hydrogen isotope ratios. An 18O / 16O ratio (δ18O) and a D / H ratio (δD) are measured for a seawater sample, an aquifer water sample, and an original reservoir water sample and are used to make a mixing model. δ18O and δD are measured in a produced water sample and the mixing model can be used to determine the amounts of each constituent in the produced water sample.

The present invention relates to systems and processes for utilizing produced water and captured carbon dioxide to produce high-value products. The system includes a produced water processing system, a carbon capture system, an electrolyzer, and a conversion chamber. The electrolyzer includes a first chamber, a second chamber, and a semi-permeable membrane and first electrode in the first chamber and a second electrode in the second chamber. The first chamber receives treated saturated produced water. The second chamber is operated at a second operating pressure that is less than the first operating pressure and facilitates the passage of sodium ions across the membrane. A current is applied to the electrodes such that the first electrode functions as an anode and the second electrode functions as a cathode, producing hydrogen gas and sodium hydroxide in the second chamber and chlorine gas in the first chamber. The polarity of the electrodes and the flow of reagents into the first and second chambers and the flow of products out of the first and second chambers may be reversed.

The present disclosure provides a vertical compact flotation unit with air stripping enhanced shallow sedimentation effect of spiral fins, and relates to the technical field of complicated treatment of oily waste water such as oil field polymer flooding produced water so as to give consideration to bubble utilization rate, operation energy consumption, structure compactness and installation and maintenance cost. The equipment includes a tank, an oil receiving structure, a swirling inner cylinder, a swirl breaking structure, sedimentation separation components and a center cylinder. An exhaust port is formed in the top of the tank, a slag discharge port is formed in the bottom of the tank, the side surface of the tank is provided with an oil spill port, a water outlet pipe and a water inlet pipe, and the water inlet pipe is tangentially connected with the swirling inner cylinder.

The invention discloses a system and a method for treating gas field produced water to facilitate resource utilization, the gas field produced water passes through a pretreatment device, a carbon dioxide softening device and a special anti-blocking ultrafiltration device, and the water quality of the special anti-blocking ultrafiltration device is treated to meet the water quality requirement of a required recycling way to be recycled; calcium carbonate generated in the softening process of the carbon dioxide device is recycled and directly used as a drilling fluid additive. The invention provides the full-automatic treatment system and the full-automatic treatment process method which are short in flow; according to the method disclosed by the invention, the energy consumption, the agent dosage and the sludge yield are greatly reduced, and the whole-process recycling of the gas field produced water, the sludge and the process precipitate (calcium carbonate) is realized.

The utility model provides a sodium percarbonate oxidation reinforced low-pressure membrane method shale gas wastewater treatment system, and relates to the technical field of wastewater treatment. The sodium percarbonate oxidation reinforced low-pressure membrane method shale gas wastewater treatment system comprises a contact oxidation reaction tank, a low-pressure membrane unit and a water production unit, wherein the contact oxidation reaction tank is provided with a sodium percarbonate oxidizing agent adding pipeline and supply equipment for providing an activating agent for activating a sodium percarbonate oxidizing agent; the low-pressure membrane unit comprises a low-pressure membrane reaction tank and a membrane assembly arranged in the low-pressure membrane reaction tank, a water outlet of the contact oxidation reaction tank is communicated with a water inlet of the low-pressure membrane reaction tank, and the low-pressure membrane reaction tank is connected with a water outlet pipeline; the produced water unit comprises a produced water overflow pool and a produced water collecting pool, a water inlet of the produced water overflow pool is communicated with the water outlet pipeline, and a water outlet of the produced water overflow pool is communicated with the produced water collecting pool. The system can reduce membrane pollution in the process of purifying the shale gas wastewater by the low-pressure membrane and improve the wastewater treatment effect.

The invention discloses a temperature-resistant and salt-resistant flooding and washing agent for thermal recovery of offshore oilfield thickened oil and a preparation method thereof, and belongs to the technical field of chemical synergism of thermal recovery of thickened oil. The temperature-resistant and salt-resistant flooding and washing agent comprises the following components in percentage by mass: 10-15% of a nonionic surfactant, 10-15% of a zwitterionic surfactant, 1.5-3.0% of a special surfactant, 5-10% of a permeation aid and the balance of water. The water reducer can tolerate the operating environment of 250 DEG C, can tolerate oil reservoir produced water with the total mineralization degree smaller than or equal to 20000 mg / L (the sum of the concentrations of calcium and magnesium ions is smaller than or equal to 2000 mg / L), does not damage the stratum, and protects the environment. After the working solution with the concentration of 1% is aged for 24 h at the temperature of 250 DEG C, the interfacial tension can reach 10 <-3 > level through a test after the working solution is mixed with crude oil, and the oil displacement efficiency is improved by more than 8% compared with that of steam displacement.

The invention belongs to the field of wastewater treatment, and particularly relates to a method for treating white spirit brewing wastewater by coupling ozone and an activated carbon filter tank, namely sequentially carrying out biochemical treatment, ozone oxidation, activated carbon treatment, coagulation treatment and precipitation on the white spirit brewing wastewater to finally obtain produced water meeting the emission limit value. The white spirit brewing wastewater treated by the method disclosed by the invention can be discharged at a discharge limit value superior to the discharge standard of water pollutants for fermented alcohol and white spirit industry (GB 27631-2011). According to the method disclosed by the invention, the treatment cost of catalytic ozonation can be effectively reduced, the removal rate of pollutants is improved, and the service life of activated carbon is prolonged.

The utility model discloses a central water treatment filtering device for desalted water production. A raw water inlet pipe of a reservoir is communicated with a water inlet pipeline of each filter; the ultrafiltration processors are connected in series; a water outlet of each filter is communicated with a water inlet pipeline of the first-stage ultrafiltration treater; a water outlet of the N-stage ultrafiltration treater is communicated with a water inlet pipeline of the filtered water storage tank; a water outlet of the filtered water storage tank is communicated with a water inlet pipeline of the primary reverse osmosis processor; all stages of reverse osmosis processors are connected in series, and water outlets of the N stages of reverse osmosis processors are communicated with a demineralized water storage tank pipeline. According to the device, the content of various pollutants in water entering the ultrafilter can be reduced, a filter element for ultrafiltration and reverse osmosis can be protected, the content of various impurity ions in the water after ultrafiltration is reduced, the conductivity of produced water is about 10 us / cm, the hardness is 0.01 mol / L or below, the produced water is used for supplementing water for a steelmaking and steel rolling heating furnace, and generated steam can be used for power generation of a steam turbine. Water consumption is reduced, resources are saved, and the accumulation speed of scale in the boiler is effectively reduced.

The invention discloses an oilfield produced water pre-separation method and device capable of reducing the occupied area, in the produced water pre-separation device, independent and mutually communicated treatment spaces are isolated in a tank body by a separation module, produced water passes through the arranged treatment spaces one by one, and the particle sizes of obtained oil drops are gradually increased; an oil phase layer and a water phase layer are formed in the corresponding treatment space and are finally output respectively; the produced water pre-separation devices can be connected and combined according to needs, and the separation modules in the produced water pre-separation devices can be independently installed or installed in the tank body in a combined mode according to needs. The oil field produced water is subjected to a step-by-step and graded modular oil removal method, coalescence of oil drops with different particle sizes before and after treatment in different treatment spaces is realized step by step in sequence, the coalescence efficiency of the oil drops is improved on the whole, and the oil field produced water pre-separation treatment device is a device for removing oil from the oil field produced water under the same produced water pre-separation treatment effect. And a device which is more compact and can reduce the occupied area of equipment can be adopted.

The invention discloses a method and system for producing regenerated activated carbon based on carbonized material activation heat supply coupling, and relates to the technical field of activated carbon. Comprising the following steps: adding dried waste activated carbon and a preheated carbonized material into a vertical multi-section activation furnace to obtain an activated product; the tail gas of the vertical multi-section activation furnace is combusted and fed into a waste heat boiler to produce water vapor; heating is stopped after the vertical multi-section activation furnace is heated to the activation temperature, and then activation self-sustaining heat balance is formed by means of the following heat sources: combustion heat release of volatile matter in a carbonized material, combustion heat release of H2 / CO generated by water vapor activation reaction, oxidation combustion heat supply of waste activated carbon adsorbate and combustion heat supply of non-condensable combustible gas generated by dehydration of waste activated carbon dry waste gas; the carbonized material and the waste activated carbon enter the same activation furnace device in a synergistic compatibility manner, the carbonized material and the waste activated carbon interact with each other, the activation effect is improved, and the vertical multi-section activation furnace can realize self-sustaining heat balance, so that the energy cost is greatly reduced.