602 results about "Boiling process" patented technology

The invention discloses a water boiling judgment control method for a heater. The control method comprises the following steps that the heater starts working according to a preset power-regulating ratio; when the preset temperature is reached, the heater stops heating; the time of the heater stopping heating reaches the preset time, the maximum temperature value Tmax and the minimum temperature value Tmin in the present time are recorded, and the difference between the two values is worked out according to the formula of delta T=Tmax-Tmin; the delta T refers to the difference grade of the preset temperature, and based on the temperature difference grade in which the delta T falls, two boiling states are judged, namely the boiling state is judged to be reached and the boiling process is judged to be finished or the boiling state is judged not to be reached; and the heater works according to the preset power-regulating ratio corresponding to the temperature difference grade in which the delta T falls, and the whole process is repeated. The control method can accurately judge whether water in the heater is boiling, and when the boiling state is judged not to be reached, and additional heating with different heating capacity is performed, so that the phenomenon of overflow or insufficient heating when the heater works is effectively prevented.

The invention relates to an open type intelligent monitoring comprehensive experiment platform in the sugarcane sugar boiling process. The open type intelligent monitoring comprehensive experiment platform consists of a hardware part and a software part, wherein the hardware part comprises a sugar boiling tank body module, an auxiliary work module, a sensor data collecting module and a valve control module, the software part comprises a real-time data collecting assembly, a supersaturation degree soft measuring assembly and a sugar boiling process dynamic parameter optimizing and control regulation assembly, and the hardware part and the software part are connected with each other through a Mod bus and a controller area network (CAN) bus. The platform is used for scientific research, various kinds of monitoring method optimizing research are developed under various actual work conditions in the sugar boiling process, and the practical monitoring technology is provided in the actual sugar boiling process. The experiment platform can also be used as a comprehensive experiment teaching platform for students specialized in measuring control and sugar making, and relative comprehensive and design research teaching method research is developed.

The invention relates to a method for producing a expanded silk wadding, which includes: sort cocoons, boil at high temperature, degelatinize, shuck the cocoons to remove silkworm, wash, loosen by drawing and make them into silk piece, dewater, dry and draw to make the silk wadding. The invention features that the cocoons before high temperature boiling process are vacuum soaked and expanded by a expanding liquor, concretely the cocoons before high temperature are suctioned into the expanding liquor heated by 80-95 degreeC under vacuum condition, soaked uniformly and expanded in slight boiling state. The said expand is made from amphoteric surfactant. The cocoons after being made into silk pieces and before dewatering are conducted an after finishing by a silk softening agent. Advantages: the patches and stem cubes resulted from un-uniform boiling or in-complete degelatinizing of cocoons are largely reduced; the silk floss is very soft because of full expanding.

The invention discloses a processing method of cotton/ramie blended knitting fabric which adopts processing equipment of a cotton mill and adds yarn boiling and demineralizing processes before a weaving process. The whole technological process is from yarn boiling, demineralizing, weaving, mercerizing, bleaching and boiling, biological enzyme washing, and dyeing, softening, dehydration, width opening, drying and setting to preshrinking. The yarn boiling temperature in the yarn boiling process is 80 to 130 DEG C and the time is 10-30m. The demineralizing temperature in the demineralizing process is 30 to 90 DEG C and the time is 10-30m. In the demineralizing treatment, acid demineralizing agent and refining agent are used to remove heavy metal ions in cotton/ramie blended yarn. The invention has the advantages of ensuring the neat surface of the knitting fabric, comfort handle, light shrinkage and distortion and good durability with the added yarn boiling and demineralizing processes, eliminating the internal stress of the cotton/ramie blended yarn through the yarn boiling process, improving the toughness and the weaving efficiency of the knitting fabric, improving the insurance coefficient of the boiling and bleaching process through the demineralizing process and providing a guarantee for the strength of the knitting fabric.

The invention relates to a preparation method of a nanometer carbon fiber material containing polyvinylpyrrolidone, which is characterized in that wood fiber resources are used as raw materials, and the method comprises the following steps: extracting lignin from wood fibers by a boiling process, removing impurities in the lignin by an organic solvent extraction method, mixing the purified lignin, the organic solvent, and polyvinylpyrrolidone and dissolving, continuously injecting the mixed solution into a high pressure electrostatic spinning device, performing spinning to obtain nanometer fibers, finally preoxidizing the obtained nanometer fibers in air, and performing high temperature carbonization in the presence of protective gas to obtain the nanometer fibers. The invention has cheap and easily available raw materials, a simple preparation process, easy operations, and good repeatability, and is suitable for large scale production.

The invention discloses a pressure cooking appliance and a cooking control method thereof. The cooking control method comprises the following steps: a heating process: controlling a heating device to conduct heating at first power until at least one parameter of the pressure and temperature in the appliance meets the preset pressure boosting requirement; a preset pressure process: controlling the heating device to conduct heating at second power until at least one parameter meets the preset pressure maintaining requirement; a pressure maintaining process: controlling the heating device to control at least one parameter to keep constant until the preset pressure maintaining time; a pressure reducing process: controlling the heating device and a magnetic valve device to enable at least one parameter to meet the preset pressure reducing requirement; a boiling process: controlling the magnetic valve device to enable the pressure cooking appliance to conduct low-pressure boiling until the preset boiling time. According to the cooking control method, food cooked by the pressure cooking appliance is rich in soup, and more nutrient substances are dissolved in the soup, and are convenient to absorb by a human body.

The invention discloses a method for extracting hydroxytyrosol, which comprises the following steps of: preparing raw material extracting solution; taking one kind of extracting solution, adding concentrated hydrochloric acid to make the pH value thereof 0 to 2, boiling for 2 to 4 hours and hydrolyzing; allowing the hydrolyzate to pass through macroporous adsorption resin for column chromatography, eluting by using acid liquor with the pH value of 1 to 2, mixing the effluent liquid and pickling liquor, regulating the pH value to neutral, concentrating and filtering; making the filter liquor to pass through the macroporous adsorption resin for column chromatography, eluting by using 10 to 30 volume percent ethanol, collecting the eluent, concentrating, and drying to prepare the hydroxytyrosol. By acidifying the raw material extracting solution, the method realizes conversion of the hydroxytyrosol through the boiling process, greatly shortens the conversion time of the hydroxytyrosol, improves the conversion rate, integrally shortens the production cycle and saves the production cost. The hydroxytyrosol is prepared through separation and purification by the macroporous adsorption resin.

A method for measuring the temperature of a cooking vessel or saucepan by means of a radiant heater is described. The radiant heater has a heating coil with a corresponding control and an induction coil as an inductive sensor and which is located in a metal tray. With the inductive sensor, measurement takes place of the frequency of the inductive resonant circuit comprising saucepan, heating coil, induction coil and metal tray, which is dependent on the temperature of the components. In the control is stored known slopes or paths of the temperature and therefore the frequency of the metal tray over the time. From this the control means gathers correction values in order to produce from the measured curve a compensated curve. At characteristic points, such as the start of a cooking or boiling process or an empty cooking or boiling of the saucepan, it is possible to detect said temperatures.

The invention discloses a bobbin dyeing technology, comprising the following steps: loose type spooling process, blanching pretreatment process, soap boiling process and drying process: putting prepared bobbin into a main cylinder of a dyeing machine, pouring water into the main cylinder until the bobbin is submerged; dyeing process: adding dyestuff into the main cylinder: 5g/L of sodium hydrosulfite and 1.5g/L of caustic soda; putting bobbin into the cylinder, then raising temperature to 50 DEG C and maintaining the temperature for 40min for carrying out full bath restoration, then discharging water when the full bath restoration is finished.The dyeing technology has the characteristics that use level of sodium hydrosulfite, caustic soda and temperature can be controlled, full bath restoration dyeing reaction can be adopted to ensure that the processed bobbin is evenly dyed, so that the problem that dyeing and flower dyeing are difficult.

The invention relates to a method for boiling high concentration pulping in normal pressure or low pressure by an alkaline method with zero residual alkaline, and the method comprises adding accelerating agent in the boiling process and utilizing a double screw to rub and squeeze a pulper, leading pulp making and boiling process with an alkaline method to go on in normal pressure or low pressure, and leaving no residual alkaline in black liquor, leading pulp to always keep a higher density in the pulping process of boiling, washing and bleaching, and the pulp which is prepared can meets the requirement of paper making. Accelerating agent chooses one or a plurality of magnesium hydrate, potassium hydrate, sodium metasilicate, sodium sulfide, sodium sulfite, ammonium sulfite and carbamide. Special-purpose pulping boiling equipment and high-pressure boilers are not needed by pulping paper mills through utilizing the invention, in the process of pulping, pulp always keeps higher density, and black liquid has high density, little numbers and low energy consumption, alkaline recovery project with great investment is not needed to be built, and the invention enables black liquid to prepare fertilizer or other chemical products with high quality, and the invention is suitable for popularizing and applying.

The invention discloses a thermodynamic cycle system and method for ammonia water mixed working medium power cooling combined supply. Ammonia water mixture serves as a working medium, and medium-and-low temperature heat serves as a heat source; the thermodynamic cycle system includes a power cycle and a refrigerating cycle; and the power cycle taking the ammonia water mixture as the working medium, the characteristic of temperature-variable evaporation of the working medium is utilized to be excellently matched with a sensible heat source, meanwhile, the temperature-variable condensation of the working medium is utilized to provide heat for the re-boiling process of a tower kettle and the preheating process for partial feeding material of a rectifying tower of the refrigerating cycle. Through the system integration, the high-temperature part of the external heat source is utilized for power cycle, the low-temperature part of the external heat source and the heat extraction of the power cycle are utilized for the refrigerating cycle, the matched temperature and stepped utilization of heat are realized, and compared with the typical dividing system, the performance of the system is improved.

The invention provides a complete-intelligent water-boiling device, a water-boiling system and a control method. The complete-intelligent water-boiling system and method are designed correspondingly by utilization of an automatic flipping device and an automatic rotary device for a water discharge elbow. By means of various man-machine interaction modes such as key operation of a teakettle or a heating base or operation of an intelligent mobile terminal, one-button intelligent water boiling is performed. The complete-intelligent water-boiling device, the water-boiling system and the control method have following beneficial effects: during the whole water-boiling process including water adding, heating or cooling by opening a cover, complete automation is achieved; a user does not need to perform other operation so that watering operation is performed easily and conveniently; and the complete-intelligent water-boiling device is much safer and more humanized.

The invention relates to a blended yarn of flax and Tencel fiber, wherein the flax is 50-60%; the Tencel fiber is 40-60%; and its preparation comprises: (1) preparing the flax into blended yarn bar to be mixed with Tencel fiber into bar, and combining the bars into thick yarn; (2) boiling said thick yarn into thin yarn; (3) drying the thin yarn and winding to prepare the blended yarn; and the boiling process in the step (2) comprises: washing with hydric sulphate solution; bleaching with the mixture of sodium chlorite and sodium nitrate; first washing with water; oxygen bleaching with the mixture of sodium carbonate, caustic soda, sodium silicate and hydrogen dioxide solution; second washing with water. The inventive blended yarn has the advantages of two fibers, and the boiling process can increase the spinning number of flax; therefore, the product has crinkle resistance and better brightness, etc.

Provided is a small brown sugar preparation method. The method comprises the steps of squeezing sugar cane juice, boiling the juice in a series of pots, controlling the flame in the direction air stove, granulating, and putting the granule sugar in different models for cooling and shape forming to acquire the purely manual brown sugar of different flavors and different shapes. The detailed method comprises the steps of firstly preparing sugar cane juice, then boiling the sugar can juice, at last conducting the shape forming of the brown sugar. The method applies the series pots and direct air stove. The series pot uses five consecutive pots to boiling the sugar cane juice in sequence for multiple cycles. The direct air stove is used to control the heating degree and heating duration to make the heating process to be stable and orderly in the boiling process. The small brown sugar of various shapes processed by various models is both beautiful and attractive. Different spices are positioned under each model to greatly enhance the mouthfeel of the small brown sugar in the tea serving.

The invention relates to a preparation method of high-concentration malt wort, which comprises the following steps of: boiling the filtered malt wort in a boiler; adding syrup for beer prepared from starch by specific processes and hydrolysis of multiple enzyme preparations in a mash boiler in advance before the boiling process is finished; and then, depositing by rotating and cooling the hot malt wort mixed by the boiler to obtain the high-concentration malt wort. The malt wort of the invention has short preparation period and short conversion time, thereby greatly improving the efficiency for converting starch into syrup. In addition, specific starch decomposition processes are adopted by the invention, the step of secondary liquefaction is increased, and the syrup converted by the compounding technology of three kinds of amylolytic enzyme preparations meets the requirements of beer brewing, thus a brewery can save the transportation cost of syrup purchase and a large amount of energy consumption in the processes of preparation and concentration of bought-in syrup. Meanwhile, the syrup for beer brewing, which is prepared from starch, is directly added into the boiler and does not need to participate in the whole process of boiling malt wort, thereby reducing the production cost of beer malt wort, and saving the energy consumption.

The invention discloses a method for recycling tungsten and ammonia in one step from an ammonium paratungstate crystallization mother solution smelt through tungsten. After the ammonium paratungstate (APT) is subjected to evaporative crystallization, a mother solution is pumped into a reaction kettle for stripping treatment, calcium oxide with content above 90% or calcium hydroxide with content above 95% are added into the mother solution, a stripping process which is commonly used in the crystallization mother solution in the APT preparation process is utilized to recycle the ammonia, the reaction temperature is in a range from 25 DEG C to 90 DEG C, when the ammonia is subjected to gas-liquid separation through condensation concentration, the ammonia is sprayed with a hydrochloric acid to prepare ammonium chloride to return to a main process to prepare an analytical solution, white tungsten slag returns to a pressure boiling process, when a potential of hydrogen (pH) value of a reaction system is maintained in a range from 9 to 11 and concentration of ammonia nitrogen in water is reduced to about 30mg/L, the reaction is finished, and a waste liquid free of the ammonia nitrogen is subjected to a mixing treatment with an ion exchange post-liquid which is generated in the main process working procedure. The method has the advantages that the process procedures are greatly simplified, the tungsten deposition rate is high, the process is simple, the operation is easy, and the treating cost is slightly low.

The invention relates to a preparation method for lotus leaf health-care beer. The preparation method comprises the following steps: juicing lotus leaves to obtain lotus leaf juice; mixing and crushing barley malt and wheat malt, and then adding water to obtain mixed mash; saccharifying the mixed mash at the temperature of 44-78DEG C; after the saccharification is ended, filtering, boiling, precipitating, cooling, oxygenating, performing primary fermentation, diacetyl reduction, cooling, post fermentation, post storage and filtering, and operating according to a conventional preparation process of beer fermentation; adding the lotus leaf juice in the boiling process or after post storage and before filtering beer; filling and sterilizing to obtain the lotus leaf health-care beer. According to the preparation method disclosed by the invention, the usage amount of hops is reduced; the stability of wort is improved by using polyphenol in the lotus leaves, so that the forming degree of the beer is improved; the lotus leaf juice is added in the beer during the boiling of the wort or before filtering, so that the faint scent of the lotus leaves and the beer can be better fused together; the prepared lotus leaf health-care beer retains the flavor of fresh malt beer, has faint scent and lotus fragrance of the lotus leaves and has the advantages of pure flavor, freshness, tasty and unique taste; besides, the staying power of beer foam is improved.

The invention discloses a pressure cooking appliance and a cooking control method thereof. The cooking control method comprises the following processes: a heating process: controlling a heating device to conduct heating at first power until at least one parameter of pressure and temperature in the appliance meets the preset pressure boosting requirement; a preset pressure process: controlling the heating device to conduct heating at second power until at least one parameter meets the preset pressure maintaining requirement; a pressure maintaining process: controlling the heating device to control at least one parameter to keep constant until the preset pressure maintaining time; a pressure reducing process: controlling the heating device and a magnetic valve device to enable at least one parameter to meet the preset pressure reducing requirement; a boiling process: controlling the magnetic valve device to enable the pressure cooking appliance to alternatively conduct high-pressure continuous boiling and low-pressure boiling until the preset boiling time. According to the cooking control method, food cooked by the pressure cooking appliance is rich in soup, and more nutrient substances are dissolved in the soup, and are convenient to absorb by a human body.

The visual measurement and instant measuring system of the micro scale explosive boiling process comprises pulse laser with laser beam and trigger signal, platinum film trying part in the solution pool on the same axis with the laser beam, leads from both sides of the quartz glass post connected with the data sampling recorder, a high speed camera with the lens facing the surface of the platinum film trying part and the above area, a high frequency pressure sensor connected with data sampling recorder with the sensing head of the sensor inside the working media of the liquid. The pulse laser send trigger signals to data collecting recorder and high speed camera while sending out laser, with the laser beam lighting the surface of the film, which is heated to make the working media inside the liquid explode and boil with the high speed cambera taking picture of the whole process.

The invention relates to a boiling method for beverage and a food processing machine for realizing the boiling method, in particular to a soymilk boiling method and a soymilk making machine. The soymilk boiling method comprises a process of heating soymilk by a heating device and a control process for preventing the soymilk from overflowing, wherein the rated power of the heating device is Pe, the reference value of the overflowing time of the soymilk is t, and the actual value of the overflowing time of the soymilk is tn. The soymilk boiling method is characterized in that the soymilk boiling method has a process for judging the tn after the soymilk touches an anti-overflowing electrode, and the method determines the actual heating power Pn for heating the soymilk by the heating device through the judgment of tn so that the soymilk is in a heating state all the time during the whole soymilk boiling process. The invention provides the soymilk boiling method with high soymilk boiling efficiency and good mouthfeel of the soymilk, and the soymilk making machine for realizing the soymilk boiling method with simple structure and convenient operation.

The invention discloses a cooling control method of a pressure cooking utensil. The method comprises the following steps: a heating process: controlling a heating device to perform heating at a first power till at least one parameter of pressure and temperature in the utensil meets a preset pressure rising requirement; a pressure rising process: controlling the heating device to perform heating at a second power till at least one parameter meets a preset pressure maintaining requirement; a pressure maintaining process: controlling at least one parameter to remain unchanged by controlling the heating device till a preset pressure maintaining time is achieved; a boiling process: controlling the pressure cooking utensil to perform pressure boiling, and controlling the pressure cooking utensil to perform normal pressure boiling when at least one parameter meets a preset pressure dropping requirement till a preset boiling time is achieved. The method can solve the problem that food soup cooked by the existing pressure cooking utensil is not thick, and ensures that more nutrient substance is dissolved in the soup and is convenient for human body to absorb. The invention further discloses a pressure cooking utensil.