33results about How to "Reduced potential for fouling" patented technology

The invention relates to a seawater desalination device employing solar energy and vapor compressing distillation, belonging to the technical field of solar energy. The seawater desalination device comprises a solar collector, a first circulating pump, a heat exchanger, an evaporative condenser, a blower fan and a vacuum pump mechanism, wherein the solar collector is connected with the first circulating pump; the heat exchanger is respectively connected with the solar collector and the evaporative condenser; the evaporative condenser is connected with the blower fan; the vacuum pump mechanism is connected with the evaporative condenser; the evaporative condenser comprises an evaporation chamber and a condensation chamber; the condensation chamber is embedded into the evaporation chamber; the evaporation chamber is connected with the heat exchanger; and the position where the condensation chamber is embedded into the evaporation chamber is provided with a heat exchanging wall surface. The invention desalinates seawater in the mode of combining the solar energy and a low-pressure vapor compressing distillation seawater desalination method, reduces the pretreatment cost of seawater or brackish water, simplifies the mechanism and is also conveniently realized. The whole device is operated at the low pressure, reduces the operating temperature and improves the heat efficiency by employing the evaporative condenser to recover condensation heat.

A method for reducing the formation of deposits on the inner walls of a tubular heat exchanger through which a petroleum-based liquid is flowing comprises applying one of fluid pressure pulsations to the liquid flowing through the tubes of the exchanger and vibration to the heat exchanger to effect a reduction of the viscous boundary layer adjacent the inner walls of the tubular heat exchange surfaces. Reduction of the viscous boundary layer at the tube walls not only reduces the incidence of fouling with its consequential beneficial effect on equipment life but it also has the desirable effect of promoting heat transfer from the tube wall to the liquid in the tubes. Fouling and corrosion are further reduced by the use of a coating on the inner wall surfaces of the exchanger tubes.

The invention relates to a calcium sulfate catalytic oxidation process in limestone-gypsum wet flue gas desulfurization, which adopts the technical proposal that soluble ferrous salt and manganic salt or the mixture of the soluble ferrous salt and magnetic salt is used as catalyst and added in the slurry with absorbed SO2; the concentration of the soluble ferrous salt and manganic salt is 0.001 to 0.05mol/L; the pH value of the slurry with the added catalyst is 5 to 6. The calcium sulfate catalytic oxidation process has the advantages of greatly increasing the oxidation rate of the calcium sulfate, stabilizing the pH value of the system, facilitating the desulfurization operation with cheap and recyclable catalyst in the absorption tower, increasing the absorption rate of the SO2 due to the increased the oxidation rate of the calcium sulfate and reducing the scale possibility of the system.

The invention relates to a membrane element, a water treatment device and a water treatment method. Electrodes are respectively added to the water inlet end and the pure water end of the membrane element, and the electrodes are respectively positioned on the two sides of a membrane.

The invention relates to a wet-type vibrating-wire bipolar electrostatic coagulation deduster. The deduster comprises a shell, wherein one end of the shell is communicated with an air inlet pipe, the other end of the shell is communicated with an air outlet pipe, bottom of the shell is provided with a slurry bucket; bottom of the slurry bucket is provided with a slurry discharging port, the slurry bucket is connected with a sedimentation tank through an overflow pipe; the sedimentation tank is provided with a water pump which is connected with an atomizing nozzle through a circulating fluid pipe network; and the atomizing nozzle is arranged in the shell and on an air inlet channel of the air inlet pipe. The shell is further provided with a monolayer vibrating-wire grid and a multilayer vibrating-wire grid cooperating with each other and located between the atomizing nozzle and the air outlet pipe, wherein the monolayer vibrating-wire grid and the multilayer vibrating-wire grid are respectively connected with two electrodes of a DC high voltage power supply. The deduster has advantages of simple structure, low resistance, low energy consumption and large treatment amount for flue gas per unit area.

The present invention provides a large-flow instant drinking machine. It includes the following several portions: drinking machine water inlet, drinking machine water outlet, pipeline and valve, flow-regulating device, pipeline electroheater and container electroheater. Said invention also provides the connection mode of all the above-mentioned portions and the working principle of said drinking machine.

The invention provides a steam generator and a steam oven, and relates to the technical field of kitchen electric appliances. The steam generator comprises a shell body and a steam generation unit, wherein the shell body is provided with a water inlet and an exhaust port, the steam generation unit is arranged in the shell body and comprises a gasification chamber provided with a plurality of micro-channels and a heating bod used for heating the gasification chamber, and the heating body is in thermal contact with the gasification chamber; after the liquid enters the shell body from the water inlet, the liquid is divided by the micro-channels, and can be rapidly gasified in each micro-channel under the action of the heating body; and the exhaust port is used for discharging steam generatedin the steam generation unit. The steam oven comprises a water tank, the steam generator and a water pump used for conveying water in the water tank to the steam generator, wherein the water pump is connected with a control system of the steam oven, and the exhaust port of the steam generator communicates with a cooking cavity of the steam oven. According to the steam generator and the steam oven,the problem that the steam generating speed of a steam generator in an existing steam oven is low is solved.

The invention discloses an elliptical continuous twisted tube coaxial heat exchanger, which is composed of an outer tube and an inner tube arranged in an inlaid manner, wherein the outer tube is a round tube; the inner tube is configured as a single elliptical continuous twisted tube or an approximately elliptical continuous twisted tube, and an outer long shaft of the inner tube is equal to the inner diameter of the outer tube; the ratio of long diameter to short diameter of the inner tube is 1:0.2 to 0.6; the twisting inclination of the inner tube is set as 10 to 60 degrees; the direction of the long short shaft of the inner tube and an included angle of the axis of the inner tube are changed alternatively; an inner tube joint portion and an outer tube joint portion at two ends of the heat exchanger are welded and closed; outer tube walls of the inner tube joint portion and the outer tube joint portion at two ends of the heat exchanger are respectively provided with an inlet and an outlet made of working substance; the inner tube arranged in an inlaid manner and the outer tube are integrally spirally bent in a superposed circular disk shape in order to form the elliptical continuous twisted tube coaxial heat exchanger with the integral shape of spiral runway, spiral mosquito repellent or spring. The elliptical continuous twisted tube coaxial heat exchanger has the advantages of higher heat transfer coefficient, improved compactness, good pressure and vibration resistance as well as dirt resistance, little possibility of deformation and plugging, flexible structure, convenient arrangement, low price and saving expenditure.

The invention discloses a device and a method for restraining and eliminating dirt of a recycled water plate heat exchanger on line. The device is characterized by comprising an ultrasonic generator, an ultrasonic transducer, an ultrasonic amplitude transformer and a water treatment outer sleeve, wherein the ultrasonic amplitude transformer is arranged in the water treatment outer sleeve; and oneend of the ultrasonic amplitude transformer is connected with the ultrasonic transducer, and the other end of the ultrasonic amplitude transformer is inserted into a recycled water inlet port of the plate heat exchanger. A method for cleaning the device on line is characterized by comprising the following steps of: firstly, killing microbes in the dirt by using ultrasonic waves with low frequencyand high power, and stripping the dirt; and secondly, eliminating inorganic dirt and residual microbial films by using ultrasonic waves with high frequency and low power. The device and the method are suitable for the plate heat exchanger which uses recycled water as a heat exchange medium, can realize on-line cleaning without influences on the normal operation condition of the heat exchanger, isenvironment-friendly, is easy and convenient to mount, and can make the plate head exchanger operated safely and economically in a long period.

The present invention relates to a sulfur-reducing coke-removing energy-saving agent for fuel coal and its application in different equipment such as industrial boiler, stove, heating boiler, etc.

The invention relates to a novel extraction process for aromatic hydrocarbons. Key improvements in the novel extraction process are that a depentanizing tower, an extracting and rectifying tower, a solvent recovering tower and a benzene tower employ novel inward-bending arc fin flat-ring filling material and a unique liquid distribution apparatus and filling material support apparatus are cooperatively used, so resistance drop, a pressure drop ratio and loads of the towers are effectively reduced and production capacity is substantially improved. The depentanizing tower and the extracting and rectifying tower employ main and assistant reboilers for heat adjustment, so optimization of heat supply is realized and long-period stale operation of the towers is guaranteed. Meanwhile, since a sulfonic acid ionic liquid is used as a cosolvent, influence of decomposition and corrosion of the solvent is reduced, usage cost of equipment is lowered, the service life of the solvent is prolonged, the problems of high contents of aromatic hydrocarbons and napthene and easy azeotropy of aromatic hydrocarbons in the extracting process of aromatic hydrocarbons are effectively overcome, investment cost and operation cost of the facilities are substantially reduced, and substantial economic benefits are obtained.

The invention discloses an electrodialyzer. The electrodialyzer comprises an anode plate, a membrane stack, a cathode plate and a compacting plate for fixing and sealing the membrane stack; the membrane stack comprises first film pairs and second film pairs, wherein the first film pairs and the first film pairs are alternately arranged; every first membrane pair sequentially comprises a separatorplate, a first anion exchange membrane, a separator plate and a first cation exchange membrane; every second membrane pair comprises a separator plate, a second anion exchange membrane, a separator plate and a second cation exchange membrane; a monovalent selective cation exchange membrane is further arranged between the anode plate and the first membrane pair adjacent to the anode plate; and eachof the first membrane pair and the second membrane pair of the same group has four compartments to cooperate with the cation exchange membrane, the four compartments respectively have separate waterflow channels, and each compartment is communicated with a corresponding supplied water tank and a produced water tank through the corresponding water channels. The electrodialyzer has the advantagesof separation and recombination of easily-scaled ions, reduction of scaling, and prolongation of the service life of a device.

The invention provides a water purifying method capable of avoiding TDS standard exceeding of a water storage tank of a water purifying and dispensing machine. The water purifying method includes steps: after a water making system of the water purifying and dispensing machine stops running, opening a concentrated water outlet of an RO membrane, and guiding pure water into the RO membrane; stopping guiding the pure water in after concentrated water in the RO membrane is replaced. After the water purifying and dispensing machine stops making water, the concentrated water outlet of the RO membrane is opened, and the pure water is guided into the RO membrane and utilized to replace the concentrated water in the RO membrane to enable the RO membrane to be surrounded by the pure water. In this way, low-TDS pure water is at a concentrated water end of the RO membrane, and increase of TDS at a pure water end of the RO membrane can be avoided, so that TDS value of the water storage tank of the water purifying and dispensing machine can be avoided exceeding standards, probability of scaling on the surface of the RO membrane during machine halt is lowered, water making efficiency is improved, and service life of the RO membrane is prolonged. The invention further provides the water purifying and dispensing membrane.

Methods and systems are provided for controlling spark plug fouling in newly manufactured vehicles. In one example, a method may include operating an engine with a first direct injection fueling strategy including single intake direct injection on an engine start when in a pre-delivery state, and transitioning to a second different direct injection fueling strategy including split direct injectionon the engine start when in a post-delivery state. In this way, spark plug fouling may be avoided in newly manufactured vehicles.

The invention discloses a continuous self-cleaning oil-water separation device. The device is mainly composed of a supporting frame, a liquid inlet pipe, flanges, a coating material, a flow dividing pipe, a valve, multi-stage structure absorption cotton, a liquid draining pipe, a separation liquid collecting box, a stainless steel net, a fluid driving rotor, a steel wire rope, a position sensor, acontroller, an electromagnetic limiting device and a fixing piece. The stainless steel net is produced to be barrel-shaped to be matched with the flanges, the two ends of the stainless steel net arewelded with the flanges and connected with the liquid inlet pipe and the flow dividing pipe respectively, the outside of the stainless steel net is coated with the coating material with the certain thickness and the certain strength, the separation liquid collecting box is placed on the lower face, and the fluid driving rotor is arranged in the stainless steel net. The device achieves self-cleaning by internally arranging the fluid driving rotor, the separation precision is improved through secondary separation conducted by the rear-arranged multi-stage structure absorption cotton, macroporesat the front end can further contain impurity particles in the oil-water separation liquid, the separation liquid is purified particularly, the post-treatment difficulty of the separation liquid is simplified, and the service life of the absorption cotton is prolonged.

The invention relates to the technical field of cooling tower cooling, in particular to a side-air-outlet vertical falling film type closed cooling tower which comprises a cooling tower body. The cooling tower body comprises a vertical heat exchanger, a spraying system, a fan and an air inlet grille. The spraying system is arranged above the vertical heat exchanger. The air inlet grille is arranged on one side face of the cooling tower body, the fan is arranged on the other side face of the cooling tower body, and first water spraying packing is arranged between the two side faces. Due to the fact that the vertical heat exchanger is vertically arranged, the probability that a dry point is formed on the windward side of a heat exchange pipe due to reverse flow of air and water in a closed cooling tower and then scaling occurs is reduced, and the flowing speed of a water film is increased by means of driving of air; and a turbulent flow state is easily formed on the surface of a vertical snakelike coil pipe, so that the heat exchange effect of water and a cooling medium in the vertical snakelike coil pipe is better.

The invention relates to the technical field of train toilet equipment, and discloses a train vacuum-maintenance-type sanitation system. The train vacuum-maintenance-type sanitation system comprises atoilet, a clear water tank and a sewage tank, the clear water tank is located in a train body, water enters the toilet through a pipeline for water supplying, the sewage tank is located on the lowerpart of the train body and receives sewage discharged by the toilet through a pipeline, the clear water tank is connected to a water outlet faucet of a hand washing sink in the toilet and a water storage tank of a pedestal pan, a drainage pipe of the hand washing sink is also connected to the water storage tank of the pedestal pan, a sewage drainage pipe of the pedestal pan is connected to the sewage tank, a sewage discharging opening is formed in the lower part of the sewage tank, a two-stage jet pipe vacuum generator is arranged between the pedestal pan and the sewage drainage pipe, and flushing vacuum sewage drainage of the pedestal pan is achieved through vacuum. By applying systematic cooperation of water, electricity and gas, the water flush amount is decreased to 0.6 L every time, and the reliability of the sanitation system is improved.