52results about How to "Reduce fouling speed" patented technology

The invention discloses a cooling evaporating treatment method of a high boiling point liquid. The cooling evaporating treatment method comprises: heating a high boiling point liquid by using a low-temperature heat source; carrying out heat transfer and mass transfer through direct contact between low boiling point non-condensable gas used as a circulating carrier gas and the high boiling point liquid, wherein the circulating carrier gas reduces the steam partial pressure and the evaporation temperature of the high boiling point liquid; and carrying out steam stripping and evaporation on the heated high boiling point liquid to concentrate the high boiling point liquid so as to obtain a concentrated liquid, and carrying out cooling condensing on the saturated circulating carrier gas to obtain a condensed liquid. According to the present invention, through the low-temperature evaporation characteristics, the utilization efficiency of the low-temperature heat source is improved, the influence of corrosion caused by the corrosive medium is reduced, and the low-grade material can be used; and with the method and the apparatus, the fouling speed of the equipment and the pipeline are slowed down, and the continuous operation time is prolonged, such that the investment in the equipment is reduced, and the routine maintenance cost is reduced.

The invention discloses an anti-corrosive anti-scaling high-efficiency heat exchanger, mainly consisting of a support, descaling rings, a heat exchange coiled pipe, a heat exchanger inlet header and a heat exchanger outlet header, wherein the heat exchange coiled pipe is formed by stacking and alternatively arranging a plurality of heat exchange coiled pipe units, each heat exchange coiled pipe unit is manufactured through location of a location strip after two layers of snake-shaped coiled pipes are staggered, the heat exchange coiled pipe is made of a nonmetal material, and the nonmetal material includes but is not limited to polymer composite materials and modified heat-conducting composite materials. A plurality of descaling rings are suspended on each horizontal section of the heat exchange coiled pipe. The anti-corrosive anti-scaling high-efficiency heat exchanger has the advantages of effectively preventing corrosion of a heat exchanger used in different mediums, slowing down the time of scaling outside the heat exchange coiled pipe due to the arrangement of the descaling rings, and also improving the heat exchange effect of the heat exchanger, also has the advantages of compact structure, capability of mounting in a stacking manner, small overhaul space and the like, and can be widely applied to heat exchange occasions of different fluids.

The invention belongs to a comprehensive gasified grey water treatment and recovery device and method. The device comprises a grey water clarifying tank connected with a gasification system, wherein a supernatant outlet of the grey water clarifying tank is connected with a grey water circulating system of the gasification system through a first inlet and fifth tee of the grey water tank and a 2# grey water pump; the third end of the fifth tee is connected with an inlet of one side of a dosing reaction tank through a 1# grey water pump and a 1# heat exchanger, an outlet of the other side of the dosing reaction tank is connected with the clarifying tank through a 1# lifting pump, an overflow port in the upper part of the clarifying tank is connected with a clear liquid tank, the clear liquid tank is connected with a sewage treatment system through a 2# lifting pump and a first tee, and the first tee is connected with a second inlet of the grey water tank through a second tee. The device has the advantages that ions Ca 2+, Mg 2+ and Si 2+ in grey water can be effectively removed on the premise of ensuring long-period stable running of a gasification device, the hardness of the grey water is reduced, the grey water is recycled, and the scaling rates of grey water equipment and pipelines are reduced.

The invention discloses a portable device with input and display at two opposite sides and an operation method thereof. A display screen is embedded in the front of the portable device, a touch control unit is embedded in the back of the portable device, and the display position of a target in the display screen can be calculated according to touch control activity input on the touch control unit so that the view is not influenced during carrying out touch control activity, and the technical efficacy of reducing the soiling speed of the display screen is achieved.

The invention discloses a cleaning synergist for a heating supply system. The cleaning synergist specifically comprises thiourea, 5-chloro-2-methyl-4-isothiazolin-3-one, sodium nitrite, mercaptobenzothiazole, polyoxyethylene lauryl ether, zinc sulfate, diethylene triamine pentamethylene phosphonic acid, potassium chromate, sodium alginate, and the balance water. The invention further discloses a preparation method of the cleaning synergist. By the adoption of the strong cleaning synergist, a cleaning agent can be assisted in effectively and thoroughly cleaning away various rust spots, dirt and cured products attached to the inside of a boiler and the inside of a pipeline, and the scale formation speed of the boiler and the pipeline is decreased. The cleaning synergist for the heating supply system is high in acidity and good in water solubility, has no toxicity to human bodies, has no corrosiveness to the boiler and the pipeline, can remarkably improve the heat efficiency of the boiler and the pipeline, and is simple in preparation process, convenient to operate and safe and reliable to use.

The invention provides a combined evaporator and condenser and a control method thereof. The combined evaporator and condenser comprises a rotary table evaporator which consists of rotary tables arranged in parallel at intervals on a rotary shaft to evaporate and a bundle condenser. The bundle of the bundle condenser is circuitously arranged in intervals of the rotary tables, and a plurality of annular bumps are arranged in parallel on the outer surface of the bundle. The combined evaporator and condenser provided by the invention has the prominent advantage of intensifying the heat exchange efficiency of the bundle of the condenser and a liquid by maintaining the flow velocity of the liquid on the surface of the bundle of the condenser at a high speed.

The invention discloses a cleaning solution for removing calcium carbonate scale and a preparation method and application of the cleaning solution, and belongs to the field of chemical descaling. Thecleaning solution comprises, by mass, 3%-8% of phosphorus-free organic acid complexing agent, 10%-25% of phosphorus-free chelating agent, 2%-6% of penetration cosolvent, 0.05%-0.15% of corrosion inhibitor, and the balance water. The corrosion inhibitor is oleic acid imidazoline corrosion inhibitor and / or thiazole corrosion inhibitor. The penetration cosolvent is prepared by the following steps that anionic surfactant, polyols and clean water are added into a reaction still and heated to 30-50 DEG C, stirring is conducted for 20-40 minutes, sodium hexametaphosphate, sodium but and the clean water are added, the temperature is reduced to 15-25 DEG C, stirring is conducted for 30-50 minutes under the constant temperature conditions, and the penetration cosolvent is obtained; and the mass ratio of the anionic surfactant, the polyols to the clean water added for the first time is 1:10-20:20-30, the mass ratio of the sodium but, the sodium hexametaphosphate to the clean water added for the second time is 1:40-50:80-200, and the mass percent of the sodium but accounted for the penetration cosolvent is 0.16-0.3%. The cleaning solution is high in scale dissolving rate, good in scale inhibition effect, safe and environmentally friendly, and good in biodegradability.

The invention discloses a method for controlling precipitation of crystal alkali in an evaporator. The evaporation mother solution after carbonate and sulfate are precipitated and separated is partially returned to one of final three-effect evaporators in the evaporation process to reduce the crystal precipitation amount of the carbonate and the sulfate in the final three effects. The method can be used for the countercurrent flow operation of the evaporation process. The evaporation mother solution is partially returned into the three-effect evaporators in the evaporation process to reduce the crystal precipitation amount of the carbonate and the sulfate in the final three effects. The ratio of the part of the evaporation mother solution returned to the evaporation process to the total amount of the evaporation mother solution is 0.5-1.5: 3. The method is suitable for a plate type falling film evaporator, and also suitable for an external heating type natural circulating evaporator. After the method is adopted, compared with the prior art, the precipitation amount of the crystal alkali on the heating surface of the evaporator is remarkably reduced, the scaling speed of sodium carbonate and sodium sulfate on the high temperature effect heating surface is slowed down, and the period of washing a boiling tank is prolonged so that washing water entering the production flow is reduced and the consumption of steam is reduced. Because the scales of the sodium carbonate and the sodium sulfate on the heating surface of the evaporator are reduced, the evaporation efficiency is greatly improved, and the average productivity of the evaporator is improved by 10 to 15 percent compared with the prior art.

The invention discloses a sodium sulfide MVR plate-type evaporation process which comprises the following steps: S1, feeding sodium sulfide feed liquid with the concentration of 65g / l and the temperature of 40 DEG C in a feeding balance tank into an original second-effect preheater, then feeding into an original third-effect preheater or an original fourth-effect preheater, finally feeding into anoriginal first-effect preheater, and preheating to 105 DEG C; S2, injecting the sodium sulfide feed liquid preheated to 105 DEG C in the step S1 into a chamber A of a plate-type evaporator, then feeding the sodium sulfide feed liquid into a chamber B, enabling a concentrated solution to take effect, feeding the sodium sulfide feed liquid with the concentration of 200g / l and the temperature of 98DEG C into a concentrated solution tank, buffering, then feeding the sodium sulfide feed liquid into the next section for concentration, and simultaneously generating secondary steam; switching an integrated two-chamber belt, enabling a thinner to enter the chamber A to be evaporated and then enter the chamber B to be evaporated and then to be discharged in the first eight hours, enabling the thinner to enter the chamber B to be evaporated and then enter the chamber A to be evaporated and then to be discharged in the later eight hours, so that the dissolving and descaling efficiency is higher,the system has a self-cleaning function, the operation period of the system is further prolonged, and the operation cost of enterprises is reduced.

The invention relates to an oriented heat absorption film material and a spreading method thereof. The oriented heat absorption film material is prepared through a method including the steps of S1, grinding, by weight, 20-55% of crystalline manganese oxide, 5-25% of tantalum carbide, 5-10% of hafnium carbide, 2-20% of fluorphlogopite mica and 5-30% of crystalline iron oxide into a powder materialwith granularity of 100-250 mesh, wherein the total weight percentage of all the components is 100%; S2, heating the powder material obtained through grinding in the step S1 in a resistance furnace at950-1200 DEG C for 6-8 hours to obtain a solid material of the oriented heat absorption and energy conservation film material, and adding pure water accounting for 10-30% of the total weight of the solid material and inorganic high-temperature-resistant liquid gel accounting for 10-20% of the total weight of the solid material to be evenly mixed in a mixer for 7-10 h so as to obtain the orientedheat absorption film material. The film material is high in radiation intensity, generates a radiation magnetic field perpendicular to the tangential direction of the surface of a heated body under the effect of a high-temperature heat source, and enhances the heat energy absorption efficiency of a heated medium and greatly improves the heat energy transmission efficiency when directly acting on the heated medium.

The invention discloses a method and a system for the scale prevention and descaling of a film type evaporator. Two fluids sequentially pass a heat exchange surface at different flow rates, one is a main fluid with a relatively larger flow but a low flow rate, and the other is an auxiliary fluid with a relatively smaller flow but a high flow rate. First, the main fluid is sprayed on the heat exchange surface. Then, the auxiliary fluid is jet on the heat exchange surface at the high flow rate so as to scour off scale formed on the heat exchange surface. The method and the system have the beneficial effects that scaling speed is reduced, and descaling efficiency is increased; and under the condition of normal evaporation, the whole heat exchange surface is strongly interfered by the fluid which is jet at the high rate, and at a result of strong interference, the heat exchange efficiency of the main fluid is enhanced.

The invention discloses a humidifier, a control method thereof, an air conditioner and a storage medium, and belongs to the technical field of humidifiers. The humidifier includes a cylinder, a heating electrode, and a controller, wherein the heating electrode is used to generate heat using water in the cylinder as a conductive medium, and the controller is used to obtain the current of the heating electrode when the humidifier operates for a preset time. Attenuation rate, according to the relationship between the current attenuation rate of the heating electrode and the preset current attenuation rate, determine the water injection period of the cylinder. Also provided are a control method based on the humidifier, an air conditioner, and a storage medium. Beneficial effects of the present invention: the humidifier can automatically adjust the water injection cycle of the cylinder according to the different water quality conditions in different regions, so as to achieve the balance between delaying the fouling speed of the electrode and ensuring the humidification operation time, so as to improve the humidification performance of the humidifier .