12results about How to "Low acid value" patented technology

The present application relates to a kind of biodegradable hydraulic oil composition and its preparation method, it includes the following weight parts of component: biodegradable base oil 96.0-98.5 parts and composite detergent 1.5-2.5 parts;The base oil is the mixture of pentaerythritol tetraester and trimethylolpropane triester, fatty acid chain is C8-C10 saturated fatty acid, saturation ≥90%, 28 days biodegradability meets the determination of OECD 301B;The composite detergent includes: octylated diphenylamine 0.45-0.90 parts, 2,6-di-tert-butyl-4-methylphenol 0.10-0.25 parts, 2-ethylhexyl acidic phosphate and its ethanolamine salt 0.60-1.20 parts, dodecenyl succinic acid di (2-ethylhexyl ester) 0.15-0.35 parts, and the mass ratio of octylated diphenylamine and 2,6-di-tert-butyl-4-methylphenol is 1.5:1~4:1.

The invention provides a sterilization method and application of sporoderm-broken ganoderma lucidum spore powder, and belongs to the technical field of health food and medicine processing. The sterilization method comprises the following steps: pretreating wall-broken ganoderma lucidum spore powder through drying and low-temperature ultrasound; after sealing and packaging, carrying out two-section type hot-pressing sterilization treatment; and after sterilization, supercritical CO2 treatment is adopted for post-treatment. According to the invention, low-temperature vacuum drying is matched with low-temperature ultrasonic treatment to realize moisture control and uniform distribution; after sealed packaging, two-section gradient hot-pressing sterilization is adopted, and sterilization thoroughness and thermosensitive component protection are both considered; and finally, residual microorganisms are complementarily killed through supercritical CO2 aftertreatment, oxidized grease is dissolved and removed to reduce the acid value and the peroxide value, meanwhile, oxygen is replaced to delay subsequent oxidation, and no solvent is left. The method is simple and convenient to operate, feasible in industrialization and suitable for processing and production of high-quality health-care foods and medicines.

The present application belongs to the technical field of temperature control, and particularly relates to a temperature control liquid for coal-based Fischer-Tropsch synthesis hydrocarbon as well as a preparation method and application thereof. The temperature control liquid mainly comprises coal-based Fischer-Tropsch synthesis hydrocarbon, or the temperature control liquid mainly comprises coal-based Fischer-Tropsch synthesis hydrocarbon and liquid polyolefin. The distillation range of the coal-based Fischer-Tropsch synthesis hydrocarbon is less than or equal to 350 DEG C. The main component of the coal-based Fischer-Tropsch synthesis hydrocarbon is isomeric alkanes and normal alkanes with carbon number of 12-24, wherein the isomeric alkanes account for less than 90% of the total mass, and the normal alkanes account for more than 10% of the total mass. The kinematic viscosity of the coal-based Fischer-Tropsch synthesis hydrocarbon is less than or equal to 2.5 mm 2 / s at 100 DEG C, and 2.0-6.0 mm 2 / s at 40 DEG C. The kinematic viscosity of the liquid polyolefin is less than or equal to 8.0 mm 2 / s at 100 DEG C, and 2.0-20.0 mm 2 / s at 40 DEG C. The temperature control liquid has the characteristics of low density, low electrical conductivity, low kinematic viscosity and high heat conduction efficiency.

The invention discloses a composite adsorbent for waste transformer oil treatment and a preparation method and application thereof, the preparation method comprises the following steps: taking 79-84 parts by mass of a main agent, 15-20 parts by mass of an auxiliary agent and 1-1.5 parts by mass of an additive, adding the raw materials into a sodium hydroxide alkali solution, and uniformly stirring to obtain a mixture; preparing the mixture into particles, sequentially carrying out primary drying treatment and secondary drying treatment, and cooling to room temperature to obtain the composite adsorbent. The composite adsorbent is prepared by taking the carclazyte and the aluminum oxide as main agents, taking the zeolite molecular sieve, the bentonite and the attapulgite powder as auxiliaries and adding a small amount of zinc oxide, compared with a single adsorbent, regenerated oil treated by the composite adsorbent is improved in appearance and transparent in color, and impurity components in waste transformer oil can be effectively removed.

The invention discloses a refining and recycling method of waste lubricating oil, and relates to the technical field of lubricating oil recycling. The method comprises the following steps: performing ultrasonic circulating pretreatment on waste lubricating oil; then adding an oleophylic sulfydryl functionalized cyclodextrin composite material for reaction, and carrying out hot filtration in cooperation with aminated diatomite loaded nano zinc oxide; performing falling-film plasma activation and magnetic core-shell catalyst hydrotreatment on the filtrate; and finally, carrying out reduced pressure distillation and molecular distillation purification to obtain refined lubricating oil. The method provided by the invention realizes deep removal of colloid and heavy metals, effectively prevents catalyst poisoning, solves the problem of solid-liquid separation, and significantly improves the purity and quality of regenerated oil.

The invention relates to a butanol waste liquid recovery method, which comprises: providing a waste liquid produced by using propylene, hydrogen and carbon monoxide as raw materials to prepare n-butanol through a carbonylation reaction, the waste liquid comprising butyraldehyde, butyric acid, n-butanol, C8 alcohol, butyl butyrate, C12 and a heavy component substance; the waste liquid is subjected to light component removal through a light component removal tower, butyraldehyde is collected at the tower top, and light component removal liquid is obtained at the tower kettle; the light component removal liquid is subjected to heavy component removal through a heavy component removal tower, heavy component removal liquid is obtained at the tower top, and C8 alcohol, C12 and heavy component substances are collected at the tower kettle; mixing the de-heavy liquid with alkali liquor for neutralization reaction, and washing the reaction liquid with water to obtain an organic phase; enabling the organic phase to pass through an n-butyl alcohol rectifying tower, collecting n-butyl alcohol at the tower top, and obtaining kettle liquid at the tower kettle; the kettle liquid passes through a butyl butyrate rectifying tower, and butyl butyrate is obtained at the tower top; carrying out hydrogenation reaction on butyl butyrate under the action of a hydrogenation catalyst, and collecting n-butyl alcohol. According to the recovery method, useful components in the waste liquid are effectively recovered.

The application discloses a vertical variable-temperature pressure-difference quantitative puffed nut kernel crisp processing method and a puffing equipment, and relates to the field of food processing and treatment. The method comprises the following steps: after the nut kernel raw material is cleaned and soaked, standing and draining; the pretreated nut kernel is loaded into a hanging basket in a vertical puffing tank, steam is introduced into the vertical puffing tank, the nut kernel is subjected to steaming treatment, the vertical puffing tank is heated, the water in the nut kernel is vaporized, the pressure in the tank is increased and the tank is kept warm; the pressure relief valve between the vertical puffing tank and the vacuum tank is quickly opened, the pressure in the vertical puffing tank is instantaneously reduced, the water in the nut kernel is flash evaporated, the volume of the nut kernel is expanded, and a honeycomb structure is formed; the nut kernel is continuously heated and dehydrated under vacuum until the water content of the nut kernel is reduced; heating is stopped, and the nut kernel is cooled to room temperature; and the micro-puffed crisp nut kernel is obtained. Through the above steps, the quality problems of the existing nut kernel, such as hard taste, easy oxidation, great loss of nutrients, short shelf life and serious homogenization after high-temperature roasting and frying processing, can be solved.

This invention discloses a green production method for biodiesel. First, pretreated feedstock oil and methanol are preheated and then fed into a reactor loaded with a superhydrophobic polymer solid acid catalyst for esterification. After oil-water separation, the oil phase is then fed into a reactor loaded with a macroporous strong-base ion exchange resin for transesterification. The biodiesel product is collected by vacuum distillation. The biodiesel production method provided by this invention has strong feedstock adaptability, no wastewater discharge, and excessive energy consumption. Methanol can be recycled, resulting in high feedstock utilization and product quality. Furthermore, the catalyst is simple to prepare, the reaction rate is fast, and the active phase is not easily lost.

This utility model relates to the field of DHA algal oil filtration technology, and more particularly to a filtration device for DHA algal oil, including a housing, a moving mechanism on the side of the housing, a thawing mechanism disposed within the moving mechanism, a first filtration mechanism fixedly installed below the thawing mechanism, and a second filtration mechanism fixedly installed below the first filtration mechanism. This utility model employs a split-type thawing box design in the thawing mechanism, which can quickly and evenly melt solidified algal oil raw materials, avoiding DHA oxidation loss caused by localized overheating. The moving mechanism, in conjunction with a sliding groove, allows for flexible pulling of the thawing box. The solenoid valve of the first filtration mechanism can precisely control the coarse filtration flow rate, while the second filtration mechanism further removes micron-sized impurities through silk mesh gradient filtration. The synergistic effect of the two stages ensures high light transmittance and low acid value of the algal oil. Real-time monitoring of the filtration process is achieved through a glass observation window and a weighing plate, and support legs and anti-slip pads enhance the equipment's resistance to displacement in vibration environments.

This invention belongs to the field of biofuel preparation technology, specifically relating to a highly efficient method for preparing biodiesel. The method includes the following steps: adding feedstock oil, free lipase, and short-chain alcohol to a reactor, catalytically reacting at 20–70°C; after the reaction, centrifuging to collect the oil phase for preliminary distillation and purification to obtain crude biodiesel; adding the obtained crude biodiesel and short-chain alcohol to a reactor filled with a silicon-based cation exchange resin catalyst, catalytically esterifying at 40–140°C; after the reaction, distilling to remove water and unreacted short-chain alcohol to obtain the finished biodiesel. The silicon-based cation exchange resin catalyst is obtained by nitric acid oxidation of mercapto-modified SiO2 microspheres. This invention's preparation method utilizes a low-cost free lipase combined with a specific highly active and stable silicon-based cation exchange resin catalyst, enabling efficient and low-cost biodiesel preparation.

The invention relates to a light-cured resin component, a perovskite solar cell device and a preparation method and application of the perovskite solar cell device. The light-cured resin component is prepared from raw materials including epoxy resin, acrylic acid or acrylic acid derivatives, organic alkali, a polymerization inhibitor, a photoinitiator and optional filler. The light-cured resin component can be used for high-efficiency packaging of a perovskite solar cell device, and aims to improve the stability of the cell device and prolong the service life of the cell device. According to the novel light-cured resin disclosed by the invention, epoxy acrylate is taken as a main component, so that a chemical reaction with a perovskite active layer can be effectively avoided, and the effective working time of a battery is prolonged. The light-cured resin is successfully prepared by optimizing the raw material ratio and the preparation process, and has good light transmission, weather resistance and mechanical properties. Besides, the preparation method of the resin is simple, convenient, high in cost effectiveness and suitable for large-scale production, and an efficient and stable new material solution is provided for the field of perovskite solar cell packaging.