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31results about How to "Slow down the fouling rate" patented technology
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Barium strontium sulphate scale inhibitor for oil field and application thereof
ActiveCN103043807AGood anti-scaling effectHigh chelating and dispersing performanceScale removal and water softeningStrontiumBarium sulfate
The invention relates to a barium strontium sulphate scale inhibitor for an oil field and an application thereof. The barium strontium sulphate scale inhibitor comprises the following components in percentage by weight: 0.05-0.10% of polyepxoysuccinic acid, 0.01-0.03% of polyamino polyether methylene phosphonate, 0.02-0.05% of a ZG-558 scale inhibitor, 0.01-0.02% of quaternary ammonium salt and the balance of water; and working concentration is 50-120mg / l when the barium strontium sulphate scale inhibitor is used for inhibiting barium strontium sulphate scale at a gathering and transportation station of the oil field. The barium strontium sulphate scale inhibitor provided by the invention can effectively realize barium strontium sulphate scale inhibition with high sulphuric acid content (SO4<2-> is less than or equal to 1600mg / l) and high barium content (the ratio of Ba<2+> to Sr<2+> is less than or equal to 1800mg / l), and scale inhibition rate is more than 70%.
Owner:PETROCHINA CO LTD
Evaporative water chilling unit and control method
ActiveCN107575971AReduce foulingImprove energy efficiencySpace heating and ventilation safety systemsLighting and heating apparatusCooling effectEngineering
The invention provides an evaporative water chiller and a control method, the evaporative water chiller includes: a compressor (1) and an evaporative condenser (2); an air-cooled pre-cooling heat exchanger (8), arranged in the between the compressor (1) and the evaporative condenser (2); a water-cooled precooling heat exchanger (9), arranged between the compressor (1) and the evaporative condenser (2) and connected in parallel with the air-cooled pre-cooling heat exchanger (8). Compared with the air-cooled single pre-cooling method in the prior art, the present invention can increase the water pre-cooling method. Since the power consumption of the water pre-cooling method is smaller than that of the wind pre-cooling method, it is effective in preventing scale of the unit. At the same time, it also reduces the power consumption of the unit and improves the energy efficiency of the unit; at the same time, because the air pre-cooling and water pre-cooling work at the same time to cool the refrigerant, it also effectively improves the cooling and heat release efficiency of the refrigerant and improves the heat transfer of the unit. ability.
Owner:GREE ELECTRIC APPLIANCES INC
Method for directly treating air cooling drum boiler unit water supply
ActiveCN1945115AReduce depositionAdd lessSteam boilersSteam boilers componentsFlow-accelerated corrosionCorrosion
The present invention relates to boiler feed water treating technology, and is especially water treating method for directly air cooled steam drum boiler. Under the reductive condition, the condensed water from the condensing water tank is added with ammonia before entering the boiler directly under the condition of closing the oxygen discharging door of deaerator and the water hydrogen conductivity is controlled below 0.2microS / cm. In case of poor water quality, the oxygen discharging door is opened to convert into reductive mode. The present invention alters the traditional concept that dissolved oxygen will result in corrosion, and has double compact oxide film formed on surface of metal to inhibit the flow corrosion in thermal system, fine treatment of condensed water for long running time, no use of carcinogenic hydrazine and lowered ammonia adding amount for environment protection and health, and raised equipment utilization.
Owner:ELECTRIC POWER RES INST STATE GRID SHANXI ELECTRIC POWER +1
Organic wastewater treatment and recycling method
InactiveCN105036453AImprove processing efficiencySlow fouling rateWater contaminantsMultistage water/sewage treatmentPollutantChemistry
The present invention discloses an organic wastewater treatment and recycling method, wherein organic mineral-based powder material adsorption and microporous membrane filtration simultaneous-performing process is used, the process has characteristics of stability, efficiency, high equipment integration degree and small occupation area, and the treated water achieves the safe discharge and production recycling standard. According to the present invention, the hydrophobically modified organic mineral powder material is adopted as the adsorption media, and the method can be widely used in the fields of deep treatment of organic wastewater and difficultly-biodegraded pollutants, and the like.
Owner:厦门紫金矿冶技术有限公司
System and method of power station boiler for treating and recycling heavy oil wastewater
ActiveCN104671607AEfficient use ofReuse of waste heatTreatment using aerobic processesScale removal and water softeningEngineeringSuperheated steam
The invention discloses a system and method of a power station boiler for treating and recycling heavy oil wastewater. The system comprises a heavy oil thermal recovery well, a silicon removal reactor and a softening reactor which are connected with one another in sequence, wherein the softening reactor is connected with a liquid inlet of an evaporator, a condensed water outlet of the evaporator is sequentially connected with a biological aerated filter and a desalting device, and a water producing outlet of the desalting device is connected with a power station boiler and steam turbine system; a silicon removal medicament dosing opening is formed in the silicon removal reactor, a softening medicament dosing opening is formed in the softening reactor, and a steam exhaust outlet of a steam turbine in the power station boiler and steam turbine system is connected with a heat source inlet of the evaporator; and a superheated steam outlet of the power station boiler in the power station boiler and steam turbine system is connected to the heavy oil thermal recovery well. By adopting the system disclosed by the invention, co-production of water, heat and electricity can be achieved, the heat energy can be effectively used, and the cycle thermal efficiency can be improved.
Owner:XIAN THERMAL POWER RES INST CO LTD +2
System and method for sectional pH (potential of hydrogen) value adjusting of thermal system of thermal power plant
InactiveCN107381763AImprove securityImprove economyWater treatment parameter controlWater/sewage treatment by neutralisationAutomatic controlHydrogen
The invention relates to a system and a method for sectional pH (potential of hydrogen) value adjusting of a thermal system of a thermal power plant, which are used for controlling the sectional pH value adjusting of the thermal system and enabling a water supply system and a water drain system of a low pressure heater to avoid corrosion accelerating caused by flowing. The system comprises an ammonia solution preparation system and a dosage automatic control system. The adjusting method comprises the following steps of enabling the ammonia solution preparation system to prepare a low-concentration ammonia water solution, using the low-concentration ammonia water solution as a pH value adjuster, enabling a directional dosage pipeline to adjust the pH value of the thermal system by sections, and enabling the water supply system and the water drain system of the low pressure heater to avoid corrosion accelerating caused by flowing. The system and the method have the advantages that the problem of easiness in corrosion accelerating caused by flowing in the water supply system and the water drain system of the low pressure heater in front of the furnace are solved; the content of iron in the drained water is greatly reduced, and the influence to the thermal system is avoided.
Owner:DATANG DONGBEI ELECTRIC POWER TESTING & RES INST
Flue gas desulfurization efficiency enhancing agent for wet flue gas desulfurization system, and preparation method and application of flue gas desulfurization efficiency enhancing agent
InactiveCN108126497AImprove desulfurization efficiencyPromote absorptionDispersed particle separationGlutaric acidSulfur
The invention discloses a flue gas desulfurization efficiency enhancing agent for a wet flue gas desulfurization system. The agent comprises the following components in percent by weight: 65 to 75 percent of adipic acid, 1 to 10 percent of sodium adipate, 10 to 20 percent of succinic acid, 1 to 10 percent of sodium succinate, and 1 to 10 percent of glutaric acid; a preparation method of the flue gas desulfurization efficiency enhancing agent comprises the following step: mixing and uniformly stirring the formula amount of adipic acid, sodium adipate, succinic acid, sodium succinate and glutaric acid, so as to obtain the flue gas desulfurization efficiency enhancing agent; and the flue gas desulfurization efficiency enhancing agent is applied to wet flue gas desulfurization systems configured to units, with the furnace coal sulphur content being greater than 1.2 percent. The flue gas desulfurization efficiency enhancing agent can greatly reduce the power consumption rate of the units, and reduce the power generation cost; a devulcanized PH value can be controlled to be in a low level; scales formed in an absorption tower can be effectively reduced; the oxidation effect of the absorption tower can be improved; the use ratio of limestone can be improved; the agent can effectively prevent foam from being produced in the absorption tower; and the agent does not have toxicity.
Owner:徐州润华环保科技有限公司
Organic-phosphonate-based organic energy-saving and emission-reduction agent for industrial boiler
InactiveCN104773848AReduce sewage rateReduce rateScale removal and water softeningPhosphateMorpholine
The invention discloses an organic-phosphonate-based organic energy-saving and emission-reduction agent for an industrial boiler. The organic-phosphonate-based organic energy-saving and emission-reduction agent comprises, by mass, 15%-25% of 1-Hydroxyethylidene-1,1-diphosphonic acid, 10%-15% of butane phosphate-1,2,4-tricarboxylic acid, 5%-10% of maleic acid-acrylic copolymer, 2%-3% of morpholine, 1%-2% of diethylhydroxylamine, 0.2 %-0.8% of tannin alkali metal salt and the balance water. The organic-phosphonate-based organic energy-saving and emission-reduction agent is free of inorganic chemical ingredients, all the components in the formula are organic, the water dissolved solid matter, the blowdown rate and the heating surface scaling rate of the industrial boiler are lowered effectively, and the chemical cleaning period of the boiler is prolonged; the agent is high in scale inhibition corrosion inhibition efficiency, small in feeding quantity, free of poison, low in cost, wide in ingredient source, stable in high-temperature performance, capable of adjusting the return condensate quality and lowering the return water system corrosion rate and suitable for industrial boilers of various types and various supply water quality conditions, and the boiler operation water quality index of the boilers is not affected in use.
Owner:GUANGZHOU SPECIAL PRESSURE EQUIP INSPECTION & RES INST
Seawater desalination water taking emergency process for red tide outbreak period
InactiveCN108840467ASimple processGood removal effectGeneral water supply conservationSeawater treatmentMetaboliteWater quality
The invention relates to a seawater desalination water taking emergency process for a red tide outbreak period. In the red tide outbreak period of a sea area, in a water taking stage, influent water quality is guaranteed not to influence working of a seawater desalination system by adopting the steps as follows: 1, adding sodium hypochlorite to kill algae and plankton in seawater and prevent propagation of shellfish and the like on the wall of a water taking pipe; 2, adding powder activated carbon to absorb algal metabolites and intracellular organic matter released by dead algae; and 3, carrying out coagulation and sedimentation, i.e., adding a flocculating agent polyferric chloride in a sloping plate sedimentation tank to carry out coagulation and sedimentation so as to remove the activated carbon and reduce turbidity of seawater. By the treatment, the organic content and the turbidity of the seawater are greatly reduced, the fouling rate of a reverse osmosis membrane in the subsequent reverse osmosis stage is retarded, the frequency of chemical cleaning of the reverse osmosis membrane is reduced, a great amount of drugs are saved, and stable operation of a seawater desalinationfactory in the red tide outbreak period is ensured.
Owner:BEIJING BEIKONG HAICHUANG TECH
Equipment and process for reducing ammonia nitrogen indexes of coal gasification water system
PendingCN113845263AAvoid cloggingSmall sizeWater treatment parameter controlGas treatmentAmmoniacal nitrogenThermodynamics
The invention relates to equipment and a process for reducing ammonia nitrogen indexes of a coal gasification water system. A graded and split steam stripping method is adopted; firstly, steam stripping is carried out on high-ammonia-nitrogen hardness-free condensate, and then the steam-stripped condensate is mixed with high-hardness grey water, so that the ammonia nitrogen indexes of the whole coal gasification water system are reduced, the steam stripping system is prevented from reducing the hardness by using alkali liquor and reversely adjusting the pH value by using acid liquor, and the operation cost and investment of the whole gasification device are greatly reduced; meanwhile, condensate generated by the high-pressure evaporation hot water tower, the low-pressure evaporation hot water tower and the vacuum flash separator enters the stripping tower in a temperature-level split manner for stripping and deamination, so that the consumption of low-pressure steam and the amount of discharged wastewater are also reduced; and finally, the steam stripping process nested in the grey water flash evaporation system, so that the ammonia nitrogen of the low-pressure grey water pipeline is reduced, the alkaline environment of the low-pressure grey water pipeline is improved, and the scaling rate of the low-pressure grey water pipeline is slowed down.
Owner:CHINA PETROLEUM & CHEM CORP +2
Treatment methodMethod for treating to wastewater by using membrane coagulation reactor-ozone-biological activated carbon technique
ActiveCN103435229AHigh degree of automationSolve the problem of non-standard dischargeWater/sewage treatment bu osmosis/dialysisMultistage water/sewage treatmentAutomatic controlTurbidity
The invention discloses a wastewater treatment method, and specifically in particular relates to an upgrading treatment method for a sewage treatment plant in a park based on a membrane coagulation reactor-ozone-biological activated carbon technique. The method comprises the following steps: introducing wastewater of the park after pretreatment to an MCR (Membrane Chemical Reactor) system to befor treatinged, so that the turbidity of contributed water is less than or equal to 0.5NTU (Number of Transfer Units) and accords with some other indexes; then, oxidizing the contributed water of the MCR system in an O3 oxidizing system; introducing the contributed water of the O3 oxidizing system to a BAC (Basic Aluminum Chloride) system, and remaining the water treated in the BAC system for 1-5 hours; and thoroughly decomposing pollutants in wastewater through synergistic effect of activated carbon adsorption and micro-biological degradation, and so that the contributed water stably contributing water to meets the discharge demands. The method disclosed by the invention has the advantages that the operational stability of the system is improved; ozone tail gas is used for aeration of the BAC system, so that the tail gas treatment problem is solved; the aerating efficiency of the BAC system is improved; the system is in modular configuration, is automatically controlled and strong in maintainability.
Owner:HANGZHOU TIAN CHUANG ENVIRONMENTAL TECH
Purification dispersant and oil slurry scale inhibitor containing purification dispersant
ActiveCN110627662ASlow down the fouling rateLow viscosityOrganic chemistryTreatment apparatus corrosion/fouling inhibitionAntioxidantDecomposition
The invention provides a purification dispersant, and an oil slurry scale inhibitor containing the purification dispersant and a preparation method thereof. The purification dispersant is a newly synthesized bisphenol type Mannich base. A polymerization inhibitor, an antioxidant, a carrier dispersant, a viscosity reducer and solvent oil are added to the purification dispersant so as to form the brand-new oil slurry scale inhibitor. The scale inhibitor is suitable for different types of raw oil, and especially has good scale inhibition effect on raw oil with poor properties, high solid content,high asphaltene content, high aromatic hydrocarbon content and high olefin content. The scale inhibitor is high in decomposition temperature and applicable in a wide temperature range, and maintainsgood scale inhibition effect when a tower bottom temperature is high; the scale inhibitor can reduce the viscosity of raw materials, increase the flow rate of system and decrease coking probability; and the addition amount of the scale inhibitor is small, and the addition amount of a normal product in the market is 30-200 ppm while the addition amount of the scale inhibitor is 10-20 ppm, so addition cost is reduced.
Owner:山东京博众诚清洁能源有限公司
VAD blowtorch cleaning device and cleaning method
InactiveCN111468473AExtended service lifeReduce the number of disassembly and assembly of pipelinesGlass deposition burnersCleaning using gasesProgrammable logic controllerCleaning methods
The invention discloses a VAD blowtorch cleaning device. The device comprises a cleaning gas supply cabinet, a cleaning gas supply cabinet main pipe, a cleaning gas supply cabinet branch pipe, a monitoring computer, a PLC controller, a soft air guide exhaust pipe, an automatic valve, a float flow meter, a blowtorch group air intake pipe, and the opening and closing of the clearance of the automatic valve and the gas guide pipe are controlled through a PLC (programmable logic controller) to realize timely and efficient cleaning operation of all layers inside a VAD blowtorch, and the space in all the layers in the blowtorch is precisely cleaned through the flow control. In the blowtorch cleaning process, a combined deposition cavity air draft tube is purged by high-pressure gas to form a large pressure difference inside and outside the blowtorch, so that powder impurities are synchronously sucked out of the outside of the blowtorch to enter a waste gas recovery part. According to the device, the scaling rate of an inner layer of the quartz blowtorch is greatly reduced, the risk of bubbles and optical parameters deterioration of an optical fiber preform core is reduced, the service life of the blowtorch is prolonged, and the production efficiency is greatly improved.
Owner:TONGDING INTERCONNECTION INFORMATION CO LTD
Scaling control method for debutanizer bottom reboiler of light hydrocarbon recovery device
InactiveCN112316472AImprove fouling problemReduce foulingDistillation regulation/controlFractional distillationReboilerProcess engineering
The invention belongs to the technical field of chemical engineering, and particularly relates to a scaling control method for a debutanizer bottom reboiler of a light hydrocarbon recovery device. Themethod comprises the steps that a scale inhibitor is injected in the feeding stage of a debutanizer, and based on the feeding amount of the debutanizer, the injection amount of the scale inhibitor is25-35 mg / kg; a corrosion inhibitor can be injected into a gas-phase volatilization section at the top of the debutanizer, and the injection amount of the corrosion inhibitor is 3-8 mg / kg based on theflow of liquefied gas at the top of the debutanizer; and a temperature and pressure reducer can also be used on a heat source steam pipeline, and deoxygenated water is injected into the temperature and pressure reducer. The method effectively improves the scaling problem of the debutanizer bottom reboiler, reduces the scaling rate of the debutanizer bottom reboiler, reduces the overhaul frequencyof the debutanizer, and prolongs the operation period of the debutanizer.
Owner:恒力石化(大连)炼化有限公司
Dilute sulfuric acid wastewater treatment system and method
PendingCN112194216AGuaranteed uptimeReduce maintenance costsWater treatment parameter controlSpecific water treatment objectivesWater treatment systemProcess engineering
The invention relates to a dilute sulfuric acid wastewater treatment system and a method. The dilute sulfuric acid wastewater treatment system comprises a preheating device, a pre-concentration device, an evaporation crystallizer, a condensation device and a vacuum device. Wherein the evaporation crystallizer comprises at least two heaters which work independently, so that the long-time stable operation of the system is ensured. The preheating device makes full use of heat energy generated in a dilute sulfuric acid wastewater treatment system, so that the operation energy consumption of the system is greatly reduced. Equipment for dilute sulfuric acid wastewater to pass through is made of zirconium and graphite, so that corrosion of acid waste liquid to system equipment is reduced. According to the dilute sulfuric acid wastewater treatment method, dilute sulfuric acid wastewater is concentrated at the temperature not higher than 70 DEG C, corrosion of sulfuric acid waste liquid to equipment at high temperature is avoided, and long-term stable operation is facilitated.
Owner:GUANGDONG WENYANG ENVIRONMENTAL TECH CO LTD
A method for controlling organic fouling of reverse osmosis membrane
ActiveCN109133433BSlow down the fouling rateImprove running stabilityWater treatment parameter controlSemi-permeable membranesActivated carbonReverse osmosis
The invention discloses an organic pollution and blocking control method of a reverse osmosis membrane. The method comprises the steps of preliminarily determining a feeding proportion of active carbon and ferric chloride through determination results of molecular weight of organic matter in an influent water sample and a three-dimensional fluorescence spectrogram of the sample, determining feeding concentration intervals of the active carbon and ferric chloride according to a DOC (dissolved organic carbon) concentration, obtaining corresponding DOC removal rates, determining the best active carbon feeding concentration A and the best ferric chloride feeding concentration B by stabilizing a minimum dose required for removing DOC, feeding the active carbon of the concentration A into reverse osmosis influent for absorption for 0.5-1h, and feeding ferric chloride of the concentration B for coagulation to remove the active carbon and the residual organic matter. The method has the characteristics of low cost, low energy consumption, simplicity in operation and the like, and achieves the purposes of stabilizing the quality of the RO (reverse osmosis) system influent, reducing a pollution and blocking speed of an RO system, improving operating stability of the RO system, and prolonging operating time of the RO system, thereby lowering operating cost of the RO system by removing organic pollutants from the RO system influent.
Owner:TSINGHUA UNIV
Extremely low acidity USY and homogeneous, amorphous silica-alumina hydrocracking catalyst and process
InactiveCN100587040CHigh activityGuaranteed yieldMolecular sieve catalystsHydrocarbon oil crackingSingle stageAmorphous silica-alumina
A catalyst composition comprising a minor amount of a low acidity, highly dealuminated ultra stable Y zeolite having an alpha value of less than about 5, preferable less than about 3 and Broensted acidity measured by FT-IR from about 1 to about 20, preferably from about 1-10 micro mole / g, a homogeneous, amorphous silica-alumina cracking component having an SB ratio of from about 0.7 to about 1.3,wherein a crystalline alumina phase is present in an amount of no greater than about 10%, preferably no greater than 5% and a catalytic amount of hydrogenation component selected from the group consisting of a Group VI metal, a Group VIII metal, and mixtures thereof is disclosed. The present invention provides for a process for converting hydrocarbonaceous oils comprising contacting the hydrocarbonaceous oils with the catalyst under suitable hydrocarbon conversion conditions. Such processes in include, but are not limited to, single stage hydrocracking, two-stage hydrocracking, series-flow hydrocracking, mild hydrocracking, lube hydrocracking, hydrotreating, lube hydrofinishing, hydrodesulphurization, hydrodenitrification, catalytic dewaxing and catalytic cracking.
Owner:CHEVROU USA INC
Organic pollution and blocking control method of reverse osmosis membrane
ActiveCN109133433AHigh removal rateExtended service lifeSemi-permeable membranesWater treatment parameter controlWater qualityReverse osmosis plant
The invention discloses an organic pollution and blocking control method of a reverse osmosis membrane. The method comprises the steps of preliminarily determining a feeding proportion of active carbon and ferric chloride through determination results of molecular weight of organic matter in an influent water sample and a three-dimensional fluorescence spectrogram of the sample, determining feeding concentration intervals of the active carbon and ferric chloride according to a DOC (dissolved organic carbon) concentration, obtaining corresponding DOC removal rates, determining the best active carbon feeding concentration A and the best ferric chloride feeding concentration B by stabilizing a minimum dose required for removing DOC, feeding the active carbon of the concentration A into reverse osmosis influent for absorption for 0.5-1h, and feeding ferric chloride of the concentration B for coagulation to remove the active carbon and the residual organic matter. The method has the characteristics of low cost, low energy consumption, simplicity in operation and the like, and achieves the purposes of stabilizing the quality of the RO (reverse osmosis) system influent, reducing a pollution and blocking speed of an RO system, improving operating stability of the RO system, and prolonging operating time of the RO system, thereby lowering operating cost of the RO system by removing organic pollutants from the RO system influent.
Owner:TSINGHUA UNIV
Flue gas desulfurization synergist for wet desulfurization system, and preparation method and application thereof
InactiveCN103272472BImprove desulfurization efficiencyImprove conversion rateDispersed particle separationMagnesium saltFlue gas
The invention discloses a flue gas desulfurization synergist for a wet desulfurization system, and a preparation method and the application thereof. The flue gas desulfurization synergist for the wet desulfurization system consists of the following components in percentage by weight: 1 to 49 percent of magnesium salt, 8 to 66 percent of sodium salt and 2 to 43 percent of organic amine. The preparation method of the flue gas desulfurization synergist comprises the following step: mixing and uniformly stirring the magnesium salt, the sodium salt and the organic amine to obtain the flue gas desulfurization synergist for the wet desulfurization system. The flue gas desulfurization synergist for the wet desulfurization system, disclosed by the invention, is applied to wet flue gas desulfurization to effectively remove sulfur dioxide in flue gas and can promote SO2 adsorption and dissolution of limestone, so that the desulfurization degree is improved by 3 to 15 percent and the dissolving speed of the limestone is improved by 6.6 to 20 percent; moreover, desulfurization reaction time is shortened, so that operating cost of flue gas desulfurization is reduced; and meanwhile, the scaling speed of calcium also can be retarded, so that reliability of the system is improved.
Owner:SHANGHAI UNIVERSITY OF ELECTRIC POWER
A high-salt and high-concentration organic waste liquid treatment process
ActiveCN104973638BEfficient separationAdaptableWater/sewage treatment by heatingIncinerator apparatusVapor liquidLiquid waste
The invention discloses a processing technology of high-salt high-concentration organic waste liquid. The processing technology comprises the following steps of: (1) the feeding quantity of materials is controlled through a frequency changer, the materials enter a distilling tower from a preheater for atmospheric distillation, light components are condensed through a light-component condenser, and heavy components enter a three-effect evaporating system consisting of three heaters for evaporation and separation; (2) vapor-liquid mixtures generated by the heaters in the three-effect evaporating system respectively enter separators, light components which are demisted by a demister are condensed, and organic components are led into a tail gas system or are exhausted; (3) secondary vapor obtained after three-effect forced circulatory evaporation and concentration enters a condenser to be condensed, partial discharged concentrated liquid enters a reaction kettle, and partial discharged concentrated liquid enters an incineration plant to be incinerated, and heat values are reclaimed. According to the processing technology disclosed by the invention, a system is good in stability; the processing technology is high in adaptability; a forced circulatory evaporation technology is adopted, so that the heat exchanging efficiency is high; two-stage demisting realizes a good demisting effect, and scale formation is postponed.
Owner:QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
A system and method for treating heavy oil wastewater and reusing power plant boilers
ActiveCN104671607BEfficient use ofReuse of waste heatTreatment using aerobic processesScale removal and water softeningEngineeringSuperheated steam
The invention discloses a system and method of a power station boiler for treating and recycling heavy oil wastewater. The system comprises a heavy oil thermal recovery well, a silicon removal reactor and a softening reactor which are connected with one another in sequence, wherein the softening reactor is connected with a liquid inlet of an evaporator, a condensed water outlet of the evaporator is sequentially connected with a biological aerated filter and a desalting device, and a water producing outlet of the desalting device is connected with a power station boiler and steam turbine system; a silicon removal medicament dosing opening is formed in the silicon removal reactor, a softening medicament dosing opening is formed in the softening reactor, and a steam exhaust outlet of a steam turbine in the power station boiler and steam turbine system is connected with a heat source inlet of the evaporator; and a superheated steam outlet of the power station boiler in the power station boiler and steam turbine system is connected to the heavy oil thermal recovery well. By adopting the system disclosed by the invention, co-production of water, heat and electricity can be achieved, the heat energy can be effectively used, and the cycle thermal efficiency can be improved.
Owner:XIAN THERMAL POWER RES INST CO LTD +2
Barium strontium sulphate scale inhibitor for oil field and application thereof
ActiveCN103043807BStable pressure changesGood scale resistanceScale removal and water softeningStrontiumBarium sulfate
The invention relates to a barium strontium sulphate scale inhibitor for an oil field and an application thereof. The barium strontium sulphate scale inhibitor comprises the following components in percentage by weight: 0.05-0.10% of polyepxoysuccinic acid, 0.01-0.03% of polyamino polyether methylene phosphonate, 0.02-0.05% of a ZG-558 scale inhibitor, 0.01-0.02% of quaternary ammonium salt and the balance of water; and working concentration is 50-120mg / l when the barium strontium sulphate scale inhibitor is used for inhibiting barium strontium sulphate scale at a gathering and transportation station of the oil field. The barium strontium sulphate scale inhibitor provided by the invention can effectively realize barium strontium sulphate scale inhibition with high sulphuric acid content (SO4<2-> is less than or equal to 1600mg / l) and high barium content (the ratio of Ba<2+> to Sr<2+> is less than or equal to 1800mg / l), and scale inhibition rate is more than 70%.
Owner:PETROCHINA CO LTD
Device and method to prevent loss of filter sand upon backflushing of iron-manganese removal tank for HyCO process
PendingCN109574121AEasy to useEasy to controlSpecific water treatment objectivesWater contaminantsWater flowControl valves
The invention relates to a device and method to prevent loss of filter sand upon backflushing of an iron-manganese removal tank for HyCO process. The device comprises an iron-manganese removal tank filled with iron-manganese removal filter sand; the top of the iron-manganese removal tank is provided with a feed port, and the bottom thereof is provided with a discharge port; the feed port is connected with an inflow pipe and an intake pipe; the inflow pipe and the intake pipe join close to the feed port to form a feed port end pipeline which is provided with a feeding control valve; the discharge port is connected with an outflow pipe and a liquid discharge pipe; the outflow pipe and the liquid discharge pipe join close to the discharge port to form a discharge port end pipeline; a backflushing water supply pipe connected to the discharge port end pipeline is guided from the inflow pipe; the discharge port end pipeline is provided with a backflushing inflow valve; the feed port is alsoconnected with an exhaust pipe; the exhaust pipe is provided with an exhaust and backflushing common discharge valve. Compared with the prior art, the device and method have the advantages that the speed of water flow is controlled so that the loss of iron-manganese removal filter san is avoided; controlling is convenient, and normal use of the iron-manganese removal tank is unaffected.
Owner:SHANGHAI HUALIN IND GASES
Multi-pole water circulation electrodialysis system and treatment process
PendingCN112408557ASlow down the fouling rateImprove securitySpecific water treatment objectivesWater/sewage treatment by electrochemical methodsIon-exchange membranesWater circulation
The invention relates to a multi-pole water circulation electrodialysis system which comprises an electrodialysis reactor, a fresh water tank, a concentrated water tank and a pole water quality control system, wherein the electrodialysis reactor is formed by assembling an anode plate, a membrane stack and a cathode plate in sequence; N selective cation exchange membranes are respectively arrangedon two sides, close to the plates, in the membrane stack to form N pole water channels; the middle part of the membrane stack consists of cation selective exchange membranes and anion selective exchange membranes which are arranged at intervals; the pole water quality control system is mainly composed of N pole water circulation and exhaust systems, and each pole water circulation is mainly composed of a pole water tank and a pole water circulation pump. And the pole water circulation is provided with an exhaust system, and the exhaust system mainly comprises a fan and an acid absorption box.The multi-pole water circulation electrodialysis system has the beneficial effects that by utilizing the electrodialysis system based on multi-pole water circulation, the scaling rate of the pole plate and the ion exchange membrane can be greatly reduced, the safety of the system is improved, and the treatment efficiency of the electrodialysis system on high-salinity wastewater is guaranteed.
Owner:ZHEJIANG ZHENENG TECHN RES INST
Landfill leachate treatment process
InactiveCN113526796AGet decarbGet the effect of denitrificationTreatment using aerobic processesGeneral water supply conservationDesalinationReverse osmosis
The invention discloses a landfill leachate treatment process, and belongs to the technical field of landfill treatment, landfill leachate sequentially passes through a biochemical treatment system, a pretreatment system, a membrane treatment system and a desalination treatment system, and the biochemical treatment system comprises a regulating tank, an anaerobic tank, a facultative tank and an aerobic tank; the pretreatment system comprises a microfiltration filter and a quartz sand filter, the membrane treatment system comprises a nanofiltration system and a reverse osmosis system, and further comprises a chemical backwashing system, a leachate concentrated solution generated by the membrane treatment system is fed into the desalination treatment system, the desalination treatment system is a magnetoelectric desalination evaporation system or a washing desalination system, magnetoelectric desalting or incineration washing fly ash desalting treatment is adopted, and the problems of high energy consumption and easy scaling caused by traditional evaporation method treatment are further reduced.
Owner:GUIZHOU OURUIXIN ENVIRONMENTAL PROTECTION TECH
An evaporative chiller and control method
ActiveCN107575971BReduce foulingImprove energy efficiencyMechanical apparatusLighting and heating apparatusEvaporative coolerProcess engineering
The invention provides an evaporative water chilling unit and a control method. The evaporative water chilling unit comprises a compressor (1), an evaporative condenser (2), an air-cooling type precooling heat exchanger (8) located between the compressor (1) and the evaporative condenser (2), and a water-cooling type precooling heat exchanger (9) arranged between the compressor (1) and the evaporative condenser (2) and connected with the air-cooling type precooling heat exchanger (8) in parallel. Compared with an air-cooling single-precooling mode in the prior art, the water precooling mode isadded, as the power consumption of the water precooling mode is smaller than that of the air precooling mode, power consumption of the unit is reduced while the unit is subjected to scale inhibition,and the energy efficiency of the unit is improved; and meanwhile, as the air precooling and water precooling are conducted at the same time to cool refrigerants, the cooling and heat releasing efficiency of the refrigerants is effectively improved, and the heat exchange capacity of the unit is improved.
Owner:GREE ELECTRIC APPLIANCES INC
Method for directly treating air cooling drum boiler unit water supply
ActiveCN100436938CImprove qualityIron and copper content decreasedSteam boilersSteam boilers componentsHydrazine compoundWater quality
The present invention relates to boiler feed water treating technology, and is especially water treating method for directly air cooled steam drum boiler. Under the reductive condition, the condensed water from the condensing water tank is added with ammonia before entering the boiler directly under the condition of closing the oxygen discharging door of deaerator and the water hydrogen conductivity is controlled below 0.2microS / cm. In case of poor water quality, the oxygen discharging door is opened to convert into reductive mode. The present invention alters the traditional concept that dissolved oxygen will result in corrosion, and has double compact oxide film formed on surface of metal to inhibit the flow corrosion in thermal system, fine treatment of condensed water for long running time, no use of carcinogenic hydrazine and lowered ammonia adding amount for environment protection and health, and raised equipment utilization.
Owner:ELECTRIC POWER RES INST STATE GRID SHANXI ELECTRIC POWER +1
A method for treating sewage by ozone biological activated carbon technology in membrane coagulation reactor
ActiveCN103435229BReduce pollution indicatorsChromaticity Index DecreaseWater/sewage treatment bu osmosis/dialysisMultistage water/sewage treatmentAutomatic controlTurbidity
Owner:HANGZHOU TIAN CHUANG ENVIRONMENTAL TECH
A Coupling Process of Activated Carbon-Activated Sludge
ActiveCN106608675BGive full play to the adsorptionReduce dosageTreatment with anaerobic digestion processesSustainable biological treatmentActivated sludgeActivated carbon
The invention discloses an active carbon-activated sludge coupling process, belonging to field of sewage treatment. The process comprises the following steps that: (1) sewage enters a biochemical system for biochemical treatment; (2) effluent of the biochemical system enters an active carbon feeding system for mixing with active carbon; (3) effluent of the active carbon feeding system enters a separating system for settlement and separation so as to obtain supernatant and bottom waste carbon mud, the supernatant is discharged as treatment effluent, a part of the bottom waste carbon mud is returned to the biochemical system, another part of the bottom waste carbon mud enters a regeneration system for regeneration of active carbon, and the rest bottom waste carbon mud is discharged after dehydration; and (4) effluent of the regeneration system enters the biochemical system. The active carbon-activated sludge coupling process provided by the invention is small in the feeding amount of active carbon, low in operation cost and high in effluent quality, and can reduce the possibility of swelling of activated sludge.
Owner:CHINA PETROLEUM & CHEM CORP +1
Methods of slowing down the rate of boiler scaling
InactiveCN103964548BReduce aging rateImprove water qualityChemical analysis using titrationWater/sewage treatment by ion-exchangeWater softeningSoftened water
The invention discloses a method for reducing the boiler scaling rate. The method specifically comprises the following steps: S1, a variable frequency water pump is mounted in front of a water inlet of a full-automatic water softening device, the frequency of the variable frequency water pump is set to be 32 Hz-40 Hz, so that the water inlet pressure of the full-automatic water softening device is 0.30 MPa-0.38 MPa; S2, to-be-treated water enters the full-automatic water softening device through the variable frequency water pump; and S3, softened water treated by the water softening device enters a boiler. According to the method, resin can recover the original exchange and treatment capacity after regeneration, the aging rate of the resin can be slowed down, the water softening capacity of the full-automatic water softening device can be uppermost, finally, the quality of the softened water is improved, the rate of scaling in the boiler is reduced, the heat-transfer property and the thermal efficiency of the boiler are improved, and fuel energy waste is reduced.
Owner:SHANGHAI SHIPYARD
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