490results about How to "Reduce content" patented technology

The invention belongs to the technical field of food processing, and particularly relates to a product rich in soluble yeast dietary fibers and a preparation method and application thereof. Wherein in terms of dry matter mass of the product containing the soluble yeast dietary fiber, the product containing the soluble yeast dietary fiber comprises the following components in percentage by mass: more than 40% of soluble yeast dietary fiber, less than 0.5% of fat, more than 20% of yeast beta-glucan and more than 20% of mannan. The product containing the soluble yeast dietary fibers prepared by the preparation method disclosed by the invention contains the soluble dietary fibers with higher content, the solubility is obviously improved, the mouth feel is improved to a certain extent, and the product contains lower fat content and is more beneficial to storage; and meanwhile, the product is rich in beta-glucan and mannan, so that the product has a wide application prospect.

The utility model relates to the field of sewage treatment, in particular to a composite three-phase separator module for preventing sludge calcification and an anaerobic reactor thereof, which comprise an outer separation module, an inner separation module, a water outlet module and a backflow module, according to the composite three-phase separator module provided by the utility model, a remarkable technical breakthrough is realized through structural innovation and process optimization. The traditional IC reactor is limited by the arrangement mode of a three-phase separator, and the effective sludge level height is less than 50% of the total height of the reactor, so that the upper volume is idle. The composite three-phase separator module is integrated at the top of the reactor, and the height of a sludge layer is increased to 70%-80% of the total height of the reactor through the double-layer separation design of the outer separation module and the inner separation module, so that the microbial biomass and the treatment load are greatly improved. Meanwhile, methane is released through forced collision of a V-shaped separation plate of the outer separation module, so that the content of carbon dioxide in reflux liquid is reduced by more than 80%, and calcium carbonate crystallization conditions are effectively destroyed by combining forced mixing of inlet water with a circulating pump.

This invention belongs to the fields of locust biotechnology and gene editing technology, specifically relating to a method for preparing locusts. Crz Methods using gene mutants and their application in locust control. This invention discovers that inhibiting gene mutants in locusts... Crz Gene expression can be used to control locusts. Crz The gene sequence is shown in SEQ ID NO:3. This invention successfully established a homozygous Crz mutant strain of the migratory locust using gene editing technology. It was found that the albino migratory locusts obtained after Crz deletion were more easily preyed upon by natural enemies than the wild-type locusts, exhibited significantly lower levels of the aggregation pheromone 4VA, and showed weaker adaptability to low temperatures compared to the wild type. This provides a new strategy for the biological control of migratory locusts and can also serve as a reference for the biological control of other pests.

The application discloses a kind of multi-element ultra-high temperature nanocomposite ceramic matrix composites and preparation method thereof, the multi-element ultra-high temperature nanocomposite ceramic matrix composites are composed of multi-element ultra-high temperature nanocomposite ceramic and porous fiber body, wherein multi-element ultra-high temperature nanocomposite ceramic is composed of oxygen-free silicon-based ceramic and multi-element transition metal carbonitride uniformly distributed therein, and the preparation method is: at least two metal element complexes are reacted with silicon-based polymer to obtain single-source precursor polymer;Then porous fiber body is placed in single-source precursor polymer solution for multiple times of impregnation pyrolysis, and the composite material provided by the application has a nanocomposite structure, an ultra-high temperature ceramic multi-element single-phase solid solution, the type, content and ratio of metal elements can be adjusted, the ultra-high temperature ceramic in the matrix is uniformly distributed and has a nanoscale grain size, and the method can avoid damage to the fiber during preparation, thereby achieving simultaneous improvement of the mechanical properties and oxidation ablation resistance of the composite material.

The application relates to the technical field of zirconium-niobium alloy material processing, in particular to a preparation method of a large-diameter zirconium-niobium alloy pipe for nuclear industry, which comprises the following steps: S1, mixing nuclear-grade sponge zirconium and niobium scraps, or mixing zirconium-niobium alloy, zirconium dioxide and iron; melting the mixture and preparing a zirconium-niobium alloy ingot; S2, sequentially performing large deformation forging in a beta single-phase zone and an alpha+beta two-phase zone; S3, drilling a central hole in the axial direction of a round-forging blank; quenching in the beta single-phase zone; S4, coating an anti-galling agent on the surface of the central hole and heating to prepare a pipe blank in the mode of cross piercing; S5, performing periodic forging and rolling on the pipe blank; S6, annealing the hot-rolled pipe twice; and straightening the hot-rolled pipe after the second-stage annealing. The zirconium-niobium alloy pipe has uniform microstructure, good mechanical properties and corrosion resistance, the production direction of the brittle hydride is nearly parallel to the circumferential direction of the pipe, and brittle damage of the pipe wall thickness caused by the crack propagation of the hydride is avoided.

This invention discloses a strain of *Neocallimastix* LGM-ZA9 and its application in the preparation of a coumarin-degrading feed additive. *Neocallimastix* LGM-ZA9 is classified as *Neocallimastix* sp., with accession number CGMCC No. 17592, and its optimal growth temperature is 39℃. The fermentation broth of *Neocallimastix* LGM-ZA9 can be used to degrade the anti-nutritional factor coumarin. The method is simple: the coumarin-containing material to be degraded is mixed with the fermentation broth, sterilized, and then the fermentation broth is added for anaerobic fermentation to degrade the coumarin. This preparation method is simple, highly operable, and can significantly reduce the coumarin content, providing a new method for feeding ruminants with sweet clover as a high-quality forage.

The application provides a method for removing oxygen-containing compounds from Fischer-Tropsch naphtha, which comprises the following steps: (1) reacting Fischer-Tropsch naphtha, a catalyst, isopropyl alcohol and glycol in a stirring reactor, and then standing and separating; (2) extracting the upper hydrocarbon phase after standing with an extractant to obtain an extraction phase and a raffinate phase; (3) recovering the solvent in a solvent recovery column, obtaining oxygen-containing compounds at the top of the column, and recycling the solvent obtained at the bottom of the column as the extractant; (4) washing the raffinate phase with water to obtain Fischer-Tropsch naphtha from which the oxygen-containing compounds are removed and washed water, recycling the washed water to the water washing column for water washing, and recycling the product at the bottom of the water recovery column as the extractant; the extractant is a mixture of ester compounds and glycol compounds, and the content of the glycol compounds is 40-70%; and the method can reduce the oxygen-containing compounds in the Fischer-Tropsch naphtha to 5 ppm, and the oil recovery rate reaches more than 95%.

The invention provides a liquid red direct dye and a preparation method thereof, and the method comprises the following steps: S1, dispersing 2-amino-5-naphthol-7-sulfonic acid and bis (trichloromethyl) carbonate in water, adjusting the pH value of a reaction system by using a first organic base, and reacting to obtain a scarlet acid aqueous solution; s2, dispersing a sulfo aromatic amine compound and nitrite in water, adjusting the pH value of a reaction system by using inorganic acid, reacting to obtain sulfo aromatic amine diazonium salt precipitate, and performing solid-liquid separation to obtain sulfo aromatic amine diazonium salt; and S3, adding the sulfonic aromatic amine diazonium salt in the step S2 into the scarlet acid aqueous solution in the step S1, adjusting the pH value of the reaction system by using second organic alkali, and reacting to obtain the liquid red direct dye. Through the preparation method, the red direct dye which can stably exist in a liquid form and is suitable for direct use can be obtained.

The present application relates to the field of environmental protection, and particularly to a technology for disposing of wind power generation scrap materials by using industrial kiln; the organic metal catalytic adsorption filler prepared by the present application is used for adsorbing dioxins in flue gas; through catalytic reaction, the dioxins are converted into more harmless or more easily handled compounds, so as to reduce the content; at the same time, the adsorption effect can also help to remove dioxins from the flue gas; such conversion includes breaking of chemical bonds, rearrangement or change of functional groups, etc.; through these changes, the toxicity and stability of dioxins are reduced, so that they are more easily handled or degraded; at the same time, due to the adsorption effect, the dioxins are fixed on the catalyst or adsorbent, so as to be effectively removed from the flue gas; the present application has simple process, small investment, low cost and high economy, and industrial waste such as plastic, rubber, tire, etc. is used as combustion-supporting material.

The present application discloses a method for improving the activity of stainless steel slag, which relates to the technical field of comprehensive utilization of resources. The method for improving the activity of stainless steel slag includes the following steps: placing hot stainless steel slag in a hot soaking pit or a slag pot, and hot soaking and spraying water for cooling to 100°C - 1000°C; introducing carbon dioxide in the first stage (pressure 0.1 - 0.5 Mpa, time 0.5 - 2 hours) into the container, and spraying water synchronously (the amount of sprayed water is 0.3 - 0.7 times the mass of the slag); then introducing air (pressure 10 - 15 Mpa, time 0.5 - 1 hour); then introducing carbon dioxide in the second stage (pressure 0.2 - 0.6 Mpa, time 1 - 2 hours), and spraying a small amount of water synchronously (the amount of sprayed water is 0.03 - 0.08 times the mass of the slag); after cooling, highly active stainless steel slag is obtained. With the collaborative design of staged gas introduction and spraying water for cooling, the content of free calcium oxide in the stainless steel slag is less than 2%, and the activity index reaches the standard of primary steel slag powder, greatly improving the resource utilization rate. At the same time, the fixed emission reduction of carbon dioxide is achieved, which helps with resource recycling and low-carbon development.

This invention provides the preparation and application of a strain of *Lactiplantibacillus plantarum* INM3104 that reduces raffinose in whole grain dough. This strain, *Lactiplantibacillus plantarum* INM3104, which degrades raffinose, was deposited at the Guangdong Provincial Microbial Culture Collection Center on April 11, 2024, with accession number GDMCC NO:64512. The advantages are: it only reduces the raffinose content in whole grain products, while also improving the flavor and quality of the whole grain products; the whole grain products produced using this preparation do not affect the overall processing of the whole grain products after fermentation, not only improving the taste of the whole grain products but also reducing the adverse factors associated with whole grain products.

This invention provides a solid-liquid hybrid battery and its preparation method. The preparation method includes the following steps: (1) assembling a positive electrode, a negative electrode, and a solid electrolyte membrane to obtain a battery cell; (2) injecting an in-situ solidified electrolyte into the battery cell obtained in step (1) for solidification to obtain the solid-liquid hybrid battery. By combining a solid electrolyte membrane with an in-situ solidified electrolyte, this invention can effectively reduce the content of combustible electrolyte inside the battery, thereby improving the intrinsic safety of the battery cell; furthermore, by combining in-situ solidification technology, the electrolyte inside the battery cell is transformed into a gel electrolyte. When thermal runaway occurs in the battery cell, the electrolyte in the gel electrolyte will absorb some heat as it breaks free from the polymer network, thereby reducing the internal temperature of the battery and further improving its safety performance.

The invention discloses an efficient hydrogen purification device suitable for an ultra-high-temperature working condition. The efficient hydrogen purification device comprises a pressure-bearing shell; the Getter material bed layer is arranged in the pressure bearing shell; the heating system is used for heating the Getter material bed layer, and the heating system is configured to maintain the operation temperature of the Getter material bed layer at 600 DEG C + / -10 DEG C; the invention further discloses an efficient hydrogen purification method suitable for the ultrahigh-temperature working condition. According to the invention, high-efficiency purification of hydrogen under high-temperature and high-pressure conditions is realized, the impurity content is obviously reduced, the service life of the device is prolonged, and reliable technical support is provided for industrial hydrogen purification.

This disclosure relates to a manganese-containing graphene composite material, its preparation method, and its uses. The method includes: mixing graphite, potassium permanganate, and concentrated acid, heating and reacting them, then adding water and stirring to obtain a mixed solution; mixing the mixed solution with optional hydrogen peroxide, and refluxing it under intermittent ultrasonic stirring, so that the resulting material is separated into solid and liquid phases to obtain a solid product; calcining the solid product under an inert atmosphere; the intermittent ultrasonic stirring step includes: (1) ultrasonic stirring for 5-30 min and then stopping for 10-60 min; (2) repeating step (1). The manganese-containing graphene composite material provided by this invention contains elements such as manganese, potassium, and sulfur. By refluxing under intermittent ultrasonic stirring, this invention enables the manganese-containing graphene composite material to have a large specific surface area, exhibiting excellent performance in reactions such as the removal of sulfur-containing compounds. On the other hand, the content of manganese ions and other substances in the wastewater is significantly reduced during the preparation process, effectively solving the problem of wastewater discharge pollution.

The invention discloses a cell wall associated kinase gene VvWAKL8 for regulating and controlling texture formation of grape fruits and application thereof, the cell wall associated kinase gene VvWAKL8 is cloned from the grape fruits for the first time, the nucleotide sequence of the cell wall associated kinase gene VvWAKL8 is as shown in SEQ ID NO.1, and the coded amino acid sequence is as shown in SEQ ID NO.2. Research finds that the VvWAKL8 is specifically and highly expressed in the hard-pulp grape variety, and subcellular localization analysis shows that the protein is localized in a cell membrane; instantaneous overexpression of VvWAKL8 in grape fruits can significantly improve fruit hardness and regulate pectin metabolism related gene expression, and verifies the core function of VvWAKL8 in fruit texture formation. The research reveals that the VvWAKL8 is a key gene for regulating and controlling the grape fruit texture for the first time, a brand new gene resource is provided for molecular marker-assisted breeding of a new storage-resistant grape variety, and an important foundation is laid for deeply analyzing a cell wall signal to regulate and control a molecular mechanism of fruit development.

The embodiment of the present application provides an IBC battery aluminum paste and an IBC battery, wherein the IBC battery aluminum paste provided by the embodiment of the present application comprises an organic additive, boron powder, aluminum powder, gallium powder, glass powder and an organic binder. By adding gallium powder in the aluminum paste, because the gallium element has etching effect and high density, it is faster than aluminum to drop to the silicon surface in the sintering process, so that the Ga-Si contact probability is increased, the contact resistance of the paste and the battery is reduced, and a high open circuit voltage can be maintained. At the same time, because part of the aluminum powder is replaced by gallium, the content of aluminum is reduced, which is beneficial to reducing the side effect of Al, so that the Al-Si reaction is weakened, the formed aluminum silicon corrosion pit is shallow, the recombination is reduced, so as to improve the open circuit voltage and the photoelectric conversion efficiency of the battery. Therefore, the problem that the existing IBC battery aluminum paste is easy to form metal recombination in the cooling process after being sintered into a positive electrode grid line, resulting in the decrease of the open circuit voltage and the photoelectric conversion efficiency of the battery piece is solved.

The application discloses a metal mask plate and a manufacturing method of the metal mask plate, and the metal mask plate is used for evaporating and depositing an organic light-emitting layer of an OLED device. The metal mask plate comprises a mask plate body, a plurality of mask holes are formed on the mask plate body, the mask plate body comprises a first surface and a second surface which are opposite to each other, the mask holes penetrate through the first surface and the second surface, the mask holes form first openings on the first surface, the mask holes form second openings on the second surface, and the ratio of the aperture of the first opening to the aperture of the second opening is between 1 and 1.5. The metal mask plate has the characteristics of high tensile strength and high resolution.

The application relates to a YAG / Yb:YAG / YAG composite laser transparent ceramic and a preparation method thereof. The Yb:YAG water-based ceramic ink comprises mixed powder composed of Al2O3 powder, Y2O3 powder and Yb2O3 powder, the solid content is 20-25 vol%, the mole ratio of Al2O3, Y2O3 and Yb2O3 is 5:3-x:x, and 0 < x <= 0.3; the dispersant content is 0.2-0.8% of the mass of the mixed powder; the pH control agent is used in an amount controlled to adjust the pH of the Yb:YAG water-based ceramic ink to be between 10-11.5 and the pH of the ink is greater than or equal to 9.5 within 24 hours under the conditions of sealing and 20-25 DEG C; the humectant content is 5-20% of the total volume of the Yb:YAG water-based ceramic ink; the binder content is 0.1-0.5% of the mass of the mixed powder; and the sintering aid content is 0.1-0.5% of the mass of the mixed powder.

The invention provides a seawater hydrogen production and storage system and a seawater hydrogen production and storage process using offshore wind power. The seawater hydrogen production and storage system comprises a permeable membrane system, a two-stage RO membrane system, an EDI ultrapure water system and a hydrogen production and storage system, and the permeable membrane system, the two-stage RO membrane system, the EDI ultrapure water system and the hydrogen production and storage system are connected in sequence; in the seawater purification direction, the permeable membrane system comprises a forward osmosis module and permeable membrane modules, the forward osmosis module comprises a forward osmosis membrane and absorption liquid, the absorption liquid is selected from a sodium chloride solution with the mass concentration of 3-15%, and the number of the permeable membrane modules connected in series is 1-3. According to the seawater hydrogen production and storage system, the seawater is subjected to graded purification, the purified seawater can be directly discharged to the sea, the purified ultrapure water can thoroughly avoid a series of problems of chlorine, calcium and magnesium precipitation and the like in the subsequent water electrolysis hydrogen production process, and liquid hydrogen storage oil is directly prepared through the hydrogen production and storage system and is convenient to transport on the sea and other scenes.

This invention discloses a highly selective method for preparing triethylenetetramine. The method uses 2-chloroethylamine hydrochloride and ethylenediamine as raw materials, reacting them in an aqueous solution. An aqueous solution of ethylenediamine with a concentration of 1-100 wt% is added dropwise to an aqueous solution of 2-chloroethylamine hydrochloride with a concentration of 1-100 wt%. The dropping rate of the ethylenediamine solution is 5% to 100% of its own mass per hour. The reaction temperature is 30-200 °C (oil bath temperature), and the reaction time is 2-20 hours (including the dropping time). The molar ratio of 2-chloroethylamine hydrochloride to ethylenediamine is 2:1 to 40:1. This invention is the first to propose a direct synthesis of triethylenetetramine from the bulk chemicals 2-chloroethylamine hydrochloride and ethylenediamine. Compared with the previously reported dichloroethane amination method and the nucleophilic substitution method between dichloroethane and ethylenediamine, this method offers milder reaction conditions, simpler operation, and higher selectivity, making it suitable for industrial production.

This invention belongs to the field of battery materials technology, and discloses a single-crystal lithium nickel manganese oxide material, its preparation method, and a lithium-ion battery. The single-crystal lithium nickel manganese oxide material contains Li... x Ni 2‑x The percentage content of O2 is C≤1.6%, C=(I LixNi2‑xO2 / (I LixNi2‑xO2 +I LiNi0.5Mn1.5O4 ))×100%, I LixNi2‑xO2 For Li in the XRD refinement results x Ni 2‑x The diffraction peak intensity corresponding to O2, I LixNi2‑xO2 +I LiNi0.5Mn1.5O4 To add LiNi to the XRD refinement results 0.5 Mn 1.5 O4 and Li x Ni 2‑x The diffraction peak intensity of the O2 two-phase model indicates a grain size of 5–11 μm. The aforementioned single-crystal lithium nickel manganese oxide material was prepared via a lithium-deficient high-temperature sintering and lithium-replenished low-temperature sintering process. Li x Ni 2‑x Large-particle monocrystalline lithium nickel manganese oxide materials with low O2 content avoid electrolyte decomposition under high voltage, thus preventing the generation of HF and Li. x Ni 2‑x The O2 reaction can effectively improve the cycle stability of the battery. Simultaneously, the high compaction density of monocrystalline lithium nickel manganese oxide material can enhance the battery's energy density, thermal stability, mechanical properties, and durability. The method for preparing monocrystalline lithium nickel manganese oxide material in this invention is relatively simple, reliable, and effective, and can utilize existing production lines.

A ventilated vehicle seat having a compression and rebound capability, while having good airflow performance, thereby providing cooling and heating performance of the vehicle seat. The ventilated vehicle seat includes a three-dimensional bolster comprised of extruded entangled filaments having a thickness of at least 2.0 mm and a thickness retention of 50.0% to 100% at 100 pounds per square foot.

This invention discloses a flow rate adaptive shotcrete trolley for highway engineering, comprising a base plate, a driver's cab mounted at one top end of the base plate, and a moving part fixedly connected to the other top end of the base plate. An adjusting spraying mechanism is disposed between the driver's cab and the moving part. The adjusting spraying mechanism includes a raw material storage section located between the driver's cab and the moving part and fixedly connected to the top of the base plate. One end of a conveying section is connected to the bottom of the raw material storage section, and the other end of the conveying section passes through the moving part and connects to a nozzle. The nozzle has, from top to bottom, an auxiliary material addition section, a water outlet section, and a flow rate adjustment section. This invention's shotcrete device can reduce the airborne dust content during dry shotcreting, reducing harm to human health. Furthermore, after construction, the interior of the device can be cleaned, improving the ease of use.

This invention relates to a traditional Chinese medicine combination for treating intrahepatic cholestasis, which is made from the following raw materials in parts by weight: Artemisia capillaris and Glycyrrhiza uralensis 5:1 and 3:1. This invention also provides the preparation of the above-mentioned medicine and its use in treating intrahepatic cholestasis. Its advantages are: the traditional Chinese medicine composition of this invention (Artemisia capillaris and Glycyrrhiza uralensis decoction) has a significant ameliorative effect on intrahepatic cholestasis (non-obstructive type) induced by a 1% CA-containing diet in mice. Artemisia capillaris and Glycyrrhiza uralensis decoction can alleviate weight loss in mice and improve liver necrosis; significantly reduce serum ALT and ALP levels in mice; reduce the content of total bile acids in the liver and decrease the proportion of toxic bile acid taurine deoxycholic acid (TDCA) in the bile acid pool; upregulate liver BSEP protein expression to promote bile acid efflux; and downregulate liver NLRP3 protein expression to alleviate liver necrosis.

The invention relates to a catalyst for preparing anisole through phenol methanol etherification as well as a preparation method and application of the catalyst. The catalyst takes aluminum phosphate as a carrier and is doped with zirconium oxide; on the basis of the mole number of Al, the mole ratio of P to Al is (0.05-2): 1, and the mole ratio of Zr to Al is (0.08-0.20): 1. Dropwise adding the aluminum-zirconium mixed aqueous solution into the phosphorus source aqueous solution, stirring, standing and washing to obtain a solid sample; and drying and roasting the solid sample to obtain the aluminum phosphate catalyst. Under the action of the catalyst, phenol and methanol are catalyzed to generate anisole. Compared with the prior art, the phenol conversion rate is greater than or equal to 50%, the anisole selectivity is greater than or equal to 85%, highly toxic dimethyl sulfate and a large amount of alkali are not needed, the process is green, the cost is low, separation is simple, and the method is suitable for large-scale industrial production of anisole.

The invention discloses an ineffective potential suppression structure for a small inductosyn, and belongs to the technical field of inductosyn. The invention aims at the application requirements of high precision and small size of the inductosyn. A stator effective conductor of the inductosyn is arranged on the front surface of the stator substrate and is arranged along the whole circumference of the stator substrate; a stator substrate and a rotor substrate of the inductosyn are made of ferromagnetic materials. Stator ineffective conductors of the inductosyn are arranged on the back face of a stator substrate and are arranged along the whole circumference. The stator non-effective conductor and the stator effective conductor are connected through dense via holes; a stator effective conductor and a rotor conductor of the inductosyn are arranged in a radial alignment manner. According to the stator design scheme based on the double-layer metal-based MCPCB, the ferromagnetic material is used for improving the signal strength and shielding the ineffective potential, the precision and the signal-to-noise ratio are improved, meanwhile, the radial and axial space occupation is reduced, and the application requirement of the induction synchronizer in a small precise servo system is met.

According to the GH5188 alloy steel smelting process, a cobalt raw material is subjected to dehydrogenation treatment, specifically, the cobalt raw material is put into an electric heating drying furnace, and heat preservation is conducted for 8 hours after the temperature is increased to 600 DEG C; the steps can effectively reduce the content of hydrogen (H), nitrogen (N) and oxygen (O) elements in the finished alloy, and prolong the service life of the alloy; in the process, the temperature is reduced to 1480-1530 DEG C, the lanthanum (La) is wrapped by the aluminum foil and then is independently added, and the volatilization of the lanthanum (La) can be reduced by a method of cooling and wrapping by the aluminum foil, so that the content of the lanthanum (La) in the product meets the requirement, and the cost is greatly reduced under the condition of meeting the product quality.

The present disclosure provides a high-rate lithium iron phosphate positive electrode material comprising lithium iron phosphate and carbon coated on a surface of the lithium iron phosphate, wherein a primary particle of the material has a particle size of 30-70 nm. The material of the present disclosure has a small and uniform primary particle size, no large single crystal particles, and a high specific surface area, and the battery prepared with the material has a high capacity, good cycle performance, excellent rate performance and low temperature performance. The present disclosure also provides a method for preparing the high-rate lithium iron phosphate positive electrode material, which has a simple process, is environmentally friendly, does not need precursors or expensive equipment, and has low cost.

The application discloses a preparation method and application of high-purity cesium iodide, which comprises the following steps: firstly, mixing an industrial-grade cesium source powder and an iodine source solution, and preparing a solid powder after vacuum rotary evaporation and drying; then repeatedly washing the powder by using a special detergent, removing impurities, and drying; sintering at a temperature of 200-350 DEG C; dissolving the sintered powder in deionized warm water, and cooling and crystallizing at 0 DEG C; and finally collecting and drying the crystallization product to obtain the high-purity cesium iodide (CsI) finished product. The CsI powder prepared by the application has a purity of more than 99.99%, can obtain more excellent comprehensive performance, and has a simple and controllable process, and has a wide application prospect in the field of perovskite solar cells.

The invention discloses a method and a system for preparing a carbon raw material through segmented hydrogenation. The method comprises the following steps: carrying out solvent deasphalting on heavy oil to obtain deasphalted oil, carrying out reduced pressure distillation on the deasphalted oil, then carrying out selective hydrotreating on middle distillate oil subjected to the reduced pressure distillation, and carrying out hydrogenation ring-opening treatment on heavy distillate oil subjected to the reduced pressure distillation, and then carrying out gas-liquid separation on the product after the selective hydrotreating treatment and the product after the hydrogenation ring-opening treatment to obtain a liquid phase which is a carbon material raw material. The carbon material raw material prepared by the method has high yield, high content of tricyclic aromatic hydrocarbon and tetracyclic aromatic hydrocarbon and low impurity content, and can be used for preparing high-quality carbon materials, such as needle coke and / or mesophase pitch and the like.