838results about How to "Not easy to scale" patented technology

A method for preparing potassium nitrate and ammonium chloride employing double decomposition reaction comprises the following steps: dissolving ammonium nitrate and potassium chloride in water according to a defined ratio at 110 DEG C, continuously adding potassium chloride and water, heating while stirring to ensure that potassium nitrate is in supersaturation state, after stopping heating, cooling the solution in a vacuum cooling crystallizer to 36-40 DEG C to separate potassium nitrate crystal, placing the potassium nitrate crystal in a centrifugal machine with a filter cloth lining to obtain coarse potassium nitrate, then washing the potassium nitrate with cold water, drying to obtain the finished potassium nitrate; in addition, adding ammonium nitrate in mother solution I and cleaning solution to adjust solution concentration so that ammonium chloride can reach supersaturation state, using a vacuum concentration device to perform negative pressure evaporation, separating and precipitating ammonium chloride by centrifuging and obtaining a solid ammonium chloride product, wherein, when dissolving ammonium nitrate and potassium chloride, the ratio of ammonium ion to chlorine ion is 1:2 and when using the centrifugal machine to obtain the coarse potassium nitrate, the separated mother solution is another mother solution I sharing the same saturation point of potassium nitrate and ammonium chloride. The solution of feed liquid circular reaction overcomes the defects of the prior art that the price of potassium nitrate used in reaction is high, the resource of potassium nitrate is in short supply and the cost of devices used in ion-exchange method is high, thus being applicable to the production of potassium nitrate.

The present invention relates to compositions and methods employing a water soluble magnesium compound. In certain embodiments, the composition includes water and water soluble magnesium compound, but lacks other materials commonly used in cleaning compositions. The methods and compositions can provide magnesium ion at predefined ratios to calcium ion in water, such as magnesium ion in a molar amount equal to or in excess over a molar amount of calcium ion. A water soluble magnesium salt including an anion of a water soluble calcium salt is more effective than a magnesium salt with an anion of a water insoluble calcium salt. These compositions can be used for reducing lime scale or precipitate formation from hard water, removing soap scum, or the like.

The invention discloses a polyvinyl chloride composition and a transparent pipe thereof. The polyvinyl chloride composition consists of the following components in part by weight: 100 parts of PVC resin, 1.0 to 5.0 parts of heat stabilizer, 0.2 to 2 parts of lubricating additive, 1 to 3 parts of processing modification aid, 2 to 5 parts of impact modifier, 0.01 to 0.08 part of decolorizing agent, 0.2 to 0.6 part of age resister and 0 to 10 parts of plasticizer. The polyvinyl chloride composition is subjected to high-speed hot mixing and low-speed cold mixing, and then is extruded to prepare the polyvinyl chloride transparent pipe; and the pipe is homogenous and transparent, has smooth inner wall, is not easy to scale, can be sleeved outside a pipeline for delivering important or dangerous chemicals, has monitoring and protecting functions, has good ageing resistance, and can be used for outdoor occasions. The preparation method for the polyvinyl chloride transparent pipe is simple, convenient and quick, does not require special tools and professional staff, and is favorable for large-scale industrial production.

A sensor includes a resonant transducer, the resonant transducer being configured to determine the composition of an emulsion. The composition of the emulsion is determined by measuring the complex impedance spectrum values of the mixture of the emulsion and applying multivariate data analysis to the values.

The invention discloses an additive which can reduce pollution emission and improve combustion efficiency when in the combustion of bunker coal, which more particularly relates to a blast furnace coal injection catalyzing oxidant. The invention consists of soft manganese ore, fluorite powder, magnesium carbonate and rare earth metal oxide, the production method is that the raw materials are respectively smashed into the granules below 80 meshes, mixed evenly and directly added into the bunker coal for even mixing according to the weight proportion of 0.2 to 5 percent; or the raw materials are fed on a conveying raw coal belt by a spiral feeding machine, sprayed and blown into a blast furnace; the invention can also be taken as the bunker coal additive of a powder coal boiler or a boiling furnace.

The invention relates to an energy-saving instant heating electric-heat device, comprising a non-metal water pipe, an electric-heat wire twisted on the non-metal water pipe and a water leg could absorb heat. When the device is operated, the normal temperature water firstly flows inside the water leg, the water is gradually preheated by the heat leaked via the electric-heat wire, the water preheated go to the water pipe, the water is gradually reheated by the electrical-heat wire when the water is flowing, when the water flows to the outlet of the heat device, the water temperature reaches the needed temperature. The distinctive character is that the heat speed is high, energy-saving, and safe and deposition would not be easy to form. The device is mainly applied in the instant heating drinking machine, to heat the water flows inside. The invention can be used in the devices that need to instantaneously heat the flowing liquids.

The invention relates to a device and a process for preparing struvite crystals from nitrogen and phosphorus in sewage. The device comprises a reactor (5), a pH (potential of Hydrogen) controller (25), a pH regulating pump (24), an alkali liquor tank (23), a nitrogen and phosphorus containing waste water tank (22) and a secondary sedimentation tank (19), wherein the reactor (5) is composed of a reactor feed pipe (9), a reactor crystal collecting pipe (8), a reactor growth tube (3) and a reactor sediment tube (2) from bottom to top. The process comprises the steps of pumping nitrogen and phosphorus containing wastewater into the reactor (5) and pumping a magnesium chloride solution into the reactor (5) to ensure that the molar ratio of NH3-N to PO43-P to Mg <2+> in the reactor (5) is (1:1:1)-(1:1:1.3); controlling the reflux ratio between 14 and 28 and the pH equal to 6.4-9.2; and forming the struvite crystals in the reactor (5) by using the nitrogen, phosphorus and magnesium containing solution. The device disclosed by the invention has the advantages of simple structure and small floor space, is simple and easy to operate and difficult to scale, can be widely applied to preparation of the struvite crystals from the nitrogen and phosphorus containing wastewater such as coking wastewater, pig manure wastewater or sludge fermentation liquor, and is capable of realizing the resource recycling of nitrogen and phosphorus.

The invention relates to a ventilating glass curtain wall and a working method thereof, belonging to the technical fields of building energy conservation and new energy utilization. The ventilating glass curtain wall is provided with a plant curtain between an outer layer glass curtain wall and an inner layer glass curtain wall; the lower end of the outer layer glass curtain wall is provided with a first ventilating regulator, the lower end of the inner layer glass curtain wall is provided with a second ventilating regulator, and the first ventilating regulator and the second ventilating regulator are respectively connected with a fan; the lower end of the plant curtain is connected with a drain tank, and the upper end thereof is connected with a micro-sprinkling irrigation spray head which is connected with an electronic water pump by a main water supply pipe of a micro-sprinkling irrigation system; and the electronic water pump is connected with a water storage tank which is connected with a condensate water outlet arranged at the end of an air conditioner by a condensate pipe. The ventilating glass curtain wall utilizes the photosynthesis and the transpiration straggling effect of the plant curtain to consume solar radiation, and is simultaneously assisted by ventilation strategy, so that the heat inside a hot channel can be taken away, the temperature inside an air cavity of the ventilating double-layer curtain wall is reduced, and the aim of saving the energy consumption can be achieved.

Flexible reticulated foam fluid treatment media and a method of making same. The flexible fluid treatment media includes a flexible reticulated foam substrate, a binder coating the flexible reticulated foam substrate and a plurality of particles compressed into the binder to form a durable interconnected layer of particles that are bound together and collectively fixed to the substrate. The flexible reticulated foam fluid treatment media is flexible and easily cut and shaped without damaging the particle layer to form a wide variety of shapes and sizes that lend themselves to use within an equally wide variety of pipes, conduits, ducts, skimmers, filter housings and fluid treatment devices. The method used to create the fluid treatment reticulated foam media includes the steps of coating a soft reticulated foam substrate with a binder, subjecting the coated substrate to compression forces, allowing the coated substrate surface to become tacky, coating the binder with a plurality of metal particles or metal oxides or activated carbon particles or intimate mixtures of these particles combined together, subjecting the coated substrate to compression forces using a roller or by passing the coated substrate between a pair of adjacent rollers, removing any excess metal particles, and curing the binder by air drying using ambient air or heated air, and removing any excess particles.

The invention relates to a method of absorbing and treating gases by using deodorization waste lye. The invention uses deodorization waste lye processed wet air oxidation treatment to absorb sulfur dioxide, dust and nitrogen oxides in the gas. The invention uses two-stage absorption mode, and the forepart uses the absorption liquid discharged in posterior part to contact directly with the gas to reduce gas temperature, and at the same time to remove part of the pollutants in the gas. The posterior part uses deodorization waste lye as absorption liquid to contact with the cooled gas in the forepart, and the absorption pollutants in this stage contains sulfoxides or nitrogen oxides, and the purified gas can be released. The removal efficiency of sulfur dioxide and dust processed treatment by the invention can be achieved above 90 percent, and the removal efficiency of nitrogen oxides can be achieved above 40 percent. The method not only can effectively purify the gas, but also can effectively utilize waste lye. The invention has the advantages of that the method is extremely stable, is not easy to scale, has low investment, simple operation, low operation cost and so on.

The invention discloses an industrial waste heat type low-temperature multi-effect sea water desaltation system and a sea water desaltation method. The system comprises a flue gas waste heat recovery device used for preparing heat source steam and preheating seawater and a low-temperature multi-effect sea water desaltation device which utilizes the heat source steam to realize sea water desaltation treatment; the low-temperature multi-effect sea water desaltation device comprises a first-effect evaporator, a plurality of intermediate-effect evaporator, a final-effect evaporator and a condenser; the condenser is connected with a vacuum-pumping device; the first-effect evaporator is connected with a feeding seawater pipe on which a plurality of preheaters are serially arranged; a fresh water pipe between every two adjacent evaporators penetrates the preheaters. According to the invention, in-order water supply is adopted, so that the scaling and corrosion problems are solved, equipment cleaning and maintenance are reduced, and therefore the sea water desaltation cost is low; the low-temperature multi-effect sea water desaltation device is combined with exhaust heat utilization, so that comprehensive resource utilization is realized, the flue gas discharge temperature is lowered, the desulphurization efficiency is favorably improved and emission of pollutants is reduced.

The heat exchange tube comprises of tabulations with different sections: circular tube (base tube), elliptical tube section, oblateness tube section, egg-shaped tube section, the half moon tube section, triangle tube section, transformation tube section and transition tube section. The strengthened heat exchange tube comprises at least three of above said tube sections with other five tube sections being assorted. The different sections can be combined randomly or arranged according to following sequence periodically: circular tube - transition tube - elliptical tube (or oblateness tube, egg-shaped tube, half moon tube, triangle tube) - transformation tube - elliptical tube (or oblateness tube, egg-shaped tube, etc.) - transformation tube - elliptical tube, ect. The combined tube strengthens heat exchange 30-500% but the flow resistance is only raised 20-100%. The invented tube possesses the advantages of not easy of scaling, easy of cleaning and reducing vibration.

The invention applies to automatic control over air conditioners and provides a liquid level detection circuit used for detecting the liquid level in a liquid container and outputting detected liquid level signals to a corresponding control device for controlling water pouring or discharging. The liquid level detection circuit comprises a detection electrode and a signal processing circuit. The detection electrode comprises a common terminal arranged on the bottom of the liquid container and a plurality of detection terminals arranged from the bottom to the top of the liquid container, and safe ultra-low alternating current voltage is connected into the common terminal. The signal processing circuit is connected with the detection terminals and comprises a plurality of output terminals corresponding to the detection terminals, and the signal processing circuit is used for outputting detection waveforms serving as liquid level signals at the corresponding output terminal after receiving the information that detection signals are available at the corresponding detection terminal. Due to the fact that the safe ultra-low alternating current voltage is connected into the detection electrode, the detection electrode is not prone to electrolysis, corrosion and scales, and liquid level error judgment and control failures caused by influences of impurities in a water tank can be avoided.

The invention provides an oxygen-resistant geothermal pipe with a high thermal conducting function and a scale preventing function. The oxygen-resistant geothermal pipe comprises an inner layer, an outer layer, a bonding glue layer and an oxygen-resistant layer, wherein the inner layer comprises, by weight, 0-1 part of modified oxidized graphene, 5-10 parts of fluoropolymers and 100 parts of polymer matrixes, the outer layer comprises, by weight, 1-10 parts of the modified oxidized graphene and 100 parts of the polymer matrixes, and the bonding glue layer comprises, by weight, 0.5-0.8 part of modified oxidized graphene and 100 parts of hot-melt glue. The oxygen-resistant geothermal pipe with the high thermal conducting function and the scale preventing function have the advantages that a thermal conducting coefficient is increased largely, thermostability of the bonding glue layer is enhanced, and by means of adding the fluoropolymers in the inner layer, the inner wall of the pipe is enabled to be smooth and less prone to scaling.

The invention discloses an alcohol differential pressure distillation and waste solution concentration thermal-coupling device and technology thereof for syrup raw materials. The device comprises a set of differential pressure distillation device which is provided with a coarse distillation tower, a washing tower and a rectification tower, and a two-stage multi-effect vacuum evaporation and concentration device. The technology comprises: fermenting mash from the fermentation procedure is subjected to differential pressure distillatory refining of the coarse distillation tower, the washing tower and the rectification tower, and common edible alcohol can be obtained; a waste solution is subjected to two-stage multi-effect vacuum evaporation and concentration in turn; and wine vapor on the top of the coarse distillation tower is introduced into a first stage of the multi-effect vacuum evaporation and concentration device and taken as a heat source for evaporation. The device adopts the differential pressure thermal-coupling technology to realize mutual matching and utilization of energy in the evaporation procedure and the waste solution evaporation and concentration procedure so as to reduce the total vapor consumption of distillation during production of the common edible alcohol through the syrup raw materials, and concentration treatment of the waste solution to be between 3.0 and 3.6 tons per ton of finished alcohol, and saves approximately 30 to 40 percent of vapor, and approximately 25 tons of cooling water consumption per ton of the finished alcohol; and two-stage multi-effect vacuum evaporation and concentration can prolong the fouling period of the device which is then easy to overhaul.

The invention discloses a preparation method of an olefin-olefin alcohol copolymer. The method comprises: in the presence of an alkane solvent, carrying out a contact reaction on olefin, olefin alcohol represented by a formula I, a catalyst and an optional chain transfer agent to generate the olefin-olefin alcohol copolymer, wherein in the formula I, L1-L3 are respectively and independently selected from H and C1-C30 alkyl, L4 is C1-C30 alkylene with a side group, and the C1-C30 alkyl is optionally substituted by a substituent. The prepared copolymer is good in form and has a good prospect inindustrial application.

The invention relates to a process for treating and comprehensively utilizing a vanadium-titanium magnetite. The process is characterized by comprising the following steps: (1) treating a raw vanadium-titanium magnetite by crushing, tailings discarding, fine grinding, low-intensity magnetic separating, high-intensity magnetic separating, and separating by a shaking table, so as to obtain a titanium concentrate and a high-vanadium-ferrum concentrate; (2) adding an adhesive to the high-vanadium-ferrum concentrate; uniformly mixing and pelletizing; drying; uniformly mixing with pulverized coal or coke powder; distributing; performing controlled reduction that V is not reduced through a coal based shaft furnace so as to obtain sponge iron, wherein the amount of used reducing agents such as the pulverized coal is 30 to 70% of the weight of high-vanadium-ferrum concentrate powder, and the reduction is performed for 10 to 18 hours at the temperature of 850 to 1060 DEG C; (3) heating the obtained sponge iron for 0.5 to 1.0 hour at the temperature less than 1050 DEG C through an intermediate frequency/ main frequency furnace under a weak reduction atmosphere; then heating until the temperature is more than 1500 DEG C; performing melt separation to enable vanadium to enter slag, thus obtaining high-grade vanadium slag and high-purity molten iron. With the adoption of the process, a plurality of valuable elements in the vanadium-titanium magnetite can be effectively separated and utilized with high additional value.

A motor vehicle lock with a latch and an associated ratchet and a motor for opening the ratchet. The motor vehicle lock has a flexible traction means which directly or indirectly connects the motor to the ratchet and which is wound up by the motor for opening the ratchet and which can be unwound by spring force when the motor is turned off.

The invention relates to a method for coproducing sodium chloride, magnesium sulfate and potassium chloride. The method for coproducing the sodium chloride, magnesium sulfate and potassium chloride is characterized in that raw material brine is subjected to processes of primary evaporation, cooling and secondary evaporation to gradually extract and separate the sodium chloride and the magnesium sulfate and prepare carnallite; and the carnallite is performed hydrolytic decomposition, and the potassium chloride is produced after washing and dehydration. The method has the advantages of realizing coproduction of three products, namely the sodium chloride, the magnesium sulfate and the potassium chloride. The extraction yield of the sodium chloride is above 85 percent; the extraction yield of the magnesium sulfate is increased to be between 56.95 and 62 percent; the extraction yield of the potassium chloride is improved by over 7 percentage; the quality of the carnallite is improved; and the content of the potassium chloride is between 19 and 23 percent, which provides good-quality raw materials for the next process.