32results about How to "Eliminate crystallization" patented technology

The invention discloses perylene diimide-based photoelectric functional materials and a preparation method thereof. A series of polymers with different contents are prepared through Suzuki polymerization, Yamamoto polymerization, Stille polymerization or Sonogashira polymerization. The materials have good thermal, photic and chemical stability and good application prospects in the fields such as organic solar cells and the like. The structural formula of the perylene diimide-based polymers is shown in the specification, wherein a is a number between 1 and 30; b is a number between 0 and 30; R is C1-C10 alkyl or alkoxy; A1 is any one of the following structures shown in the specification, wherein n is a number between 1 and 10; and R is C1-C10 alkyl.

The invention discloses injection of mannite and glycerol, which contains mannite, glycerol and water for injection. Furthermore, the invention also discloses a method for preparing the injection, which comprises the following steps: taking the mannite and the glycerol, dissolving into the water for injection, filtering and filling. The injection of the mannite and the glycerol is clinically used for treating cerebrovascular diseases, brain trauma, cerebral tumors, intracranial inflammation and the diseases of acute and chronic intracranial hypertension, hydrocephalus and the like caused by other reasons. The injection of the mannite and the glycerol has the functions of lowering the intracranial pressure quickly and eliminating the hydrocephalus and can also avoid death because of acute renal failure caused by the injury of the kidney; the injection of the mannite and the glycerol suppresses the apoptosis of neural cells and achieves the function of protecting the brain; the function of lowering the intracranial pressure is stable and has long retention time; crystals occurring because of the change of the air temperature or in the processes of storage and transportation are eliminated; and the glycerol is used as a caloric agent and can improve and recover the energy metabolism of the important viscera of the heart, the brain, the kidney and the like during oxygen deficiency. The injection of the mannite and the glycerol is a very effective, stable and safe medicine for promoting urination and removing water clinically.

The invention discloses a crystallization method of ferrous sulfate heptahydrate in a sulfuric acid method titanium dioxide production process, which comprises the following steps: continuously addinga mixed titanium solution into a vacuum crystallizer, carrying out adiabatic evaporation by using vacuum formed by a water ring vacuum pump, removing heat with high enthalpy of heat, and carrying outfirst-step cooling; after cooling in the first step, continuously feeding into a circulating crystallization mixing tank to be mixed with circulating crystallization slurry returned by freezing crystallization, carrying out cooling and crystallization in the second step, and forcibly feeding into a freezing heat exchanger through a circulating pump to carry out heat exchange; cooling to the finalrequired crystallization temperature in the third step; and continuously sending one part of the crystallized slurry to the next process for solid-liquid separation to obtain ferrous sulfate heptahydrate. According to the method disclosed by the invention, a large amount of steam consumption for removing heat by low-level enthalpy of heat in the existing vacuum crystallization is saved, and the defects of concentration effect and low scaling efficiency of a freezing heat exchanger due to the fact that the existing freezing crystallization does not utilize the high-level enthalpy of heat of the mixed titaniferous solution for adiabatic evaporation are overcome.

The invention discloses a spraying method and a spraying device for the mobile phone shell surface. A supersonic speed low-pressure cold spraying system is included and comprises a pressurizing preheating cavity and a powder feeder, the front end of the pressurizing preheating cavity is sleeved with a supersonic speed spraying gun, the front end in the pressurizing preheating cavity is divided into a feeding cavity and a preheating pressurizing cavity, and the output end of the feeding cavity and the output end of the preheating pressurizing cavity are jointly connected to a mixing cavity. Thesupersonic speed spraying gun comprises a sealed buffering chamber, the air outlet position of the sealed buffering chamber is provided with a laval nozzle for accelerating the mixed airflow to the supersonic speed, the outer surface of the sealed buffering chamber is in cup joint with a tubular water cooler for cooling, and a laser transmitter is further arranged above an air outlet of the lavalnozzle. Through combination of the supersonic speed cold spraying method and the laser deposition method, a mobile phone shell coating is more compact, the coating thickness is uniform and controllable, the ornamental value is improved, generation of harmful gases during the spraying work can be reduced to the maximum, and the resource cost is saved.

The invention provides flavored rose petal jam. The flavored rose petal jam comprises raw materials in parts by weight as follows: 24-28 parts of rose petals, 30-40 parts of brown sugar, 6-10 parts ofwhite granulated sugar, 4.2-4.8 parts of salt, 5-7 parts of honey, 7-9 parts of aizoon stonecrop herb, 7-9 parts of buckwheat powder, 7-9 parts of lotus root starch, 7-9 parts of soybean flour, 15-20parts of corn starch syrup, 2-4 parts of potassium sorbate, 4-6 parts of grape seeds, 6-8 parts of lemons, 7-9 parts of sweet-scented osmanthus, 1.6-2.0 parts of fruit and vegetable enzyme powder and102-108 parts of water. The invention also provides a preparation method of the flavored rose petal jam. The jam has the advantages as follows: (1) the jam adopts a reasonable and scientific formula,has good taste and flavor and rich and comprehensive nutrients and can provide multiple vitamins, protein for the human body and meet multiple daily function requirements of the human body; and besides, concentrated aizoon stonecrop herb juice is added to components, so that the rose jam can resist bacteria and prevent corrosion and can be placed at the normal temperature for a long time.

The invention discloses a high-performance colored glass fiber and a preparation method thereof, and the high-performance colored glass fiber comprises the following main components in percentage by weight: silicon dioxide, calcined aluminum oxide, magnesium oxide, calcium oxide, sodium oxide, calcium oxide, potassium oxide, zirconium oxide, cobalt oxide, cerium oxide, titanium oxide, barium oxide, zinc oxide, chromium trioxide, nickel oxide, copper oxide, strontium oxide, molybdenum oxide, boron oxide, manganese oxide and ferric oxide; and according to the invention, ferric oxide is added into the raw material components to replace antimony trioxide and arsenic trioxide harmful clarifying agents, and the introduction of ferric oxide can significantly reduce bubbles in molten glass, so that the strength of the glass fiber can be improved.

The invention discloses a barrel type compact mixer for diesel engine tail gas treatment. The mixer comprises an outer shell body and a mixing pipe arranged in the outer shell body and arranged in thelength direction of the outer shell body. The outer shell body is divided into a first cavity and a second cavity through a plurality of baffle plates, wherein the first cavity and the second cavitydo not communicate with each other; a nozzle mounting seat and a waste gas inlet are formed in one end, located on the first cavity, of the outer shell body; two openings are formed in the two ends ofthe mixing pipe, and one end of the mixing pipe is connected to the nozzle mounting seat; the mixing pipe penetrates through the first cavity and extends into the second cavity; a plurality of swirlblades are arranged in the portion, positioned in the first cavity, of the mixing pipe; and a steel wire mesh used for enhancing the crushing and decomposition of urea is arranged in one end, extending into the second cavity, of the mixing pipe. According to the mixer, the steel wire mesh is arranged in the mixing pipe, so that the problem of urea crystallization and low conversion efficiency of acarrier is effectively solved. The mixer not only has the advantages of simple structure and ingenious design, but also is convenient to machine, low in machining cost, and more suitable for industrial application.

The invention discloses a method for detecting urea crystallization of an SCR (Selective Catalytic Reduction) system, which comprises the following steps: respectively obtaining urea injection quantity of the SCR system under each operation condition when an engine is under different operation conditions; different operation conditions correspond to different rotating speeds and torques; determining the duration of crystallization of the urea according to the urea injection amount; according to the duration of crystallization of urea under each operation condition, whether diesel particulate filter (DPF) regeneration needs to be triggered during actual operation of the engine is determined, DPF regeneration is used for eliminating urea crystallization, whether urea crystallization occurs or not can be accurately judged, and when urea crystallization occurs, DPF regeneration is triggered, so that urea crystallization is eliminated.

A golf ball having a thermosetting polyurethane cover composed of a blend of polyurethane prepolymers is disclosed herein. The blend may be a dual blend with a TDI-based polyurethane prepolymer blended with a second diisocyanate polyurethane prepolymer, typically a PPDI-based polyurethane prepolymer. The blend may also be a tri-blend with a TDI-based polyurethane prepolymer blended with two other diisocyanate polyurethane prepolymers, typically two different PPDI-based polyurethane prepolymers. The golf ball has a durability of at least 3.5 on a shear test rating of the cover.