281 results about "P-Xylene" patented technology

The invention relates to an aromatic hydrocarbon isomer adsorbent containing a modified X-type molecular sieve. The outer surface area of the modified X-type molecular sieve is 9.5-19m < 2 > / g, and the sum of the pore volume of mesopores and the pore volume of macropores is 6%-18% of the total pore volume. The p-xylene adsorbent comprises 88-95% by mass of a modified X-type molecular sieve, 4-11% by mass of a crystal transformation X-type molecular sieve and 1-3% by mass of a matrix. The invention also relates to a preparation method of the adsorbent and application of the adsorbent in adsorption separation of p-xylene from mixed C8 aromatic hydrocarbons.

The invention discloses a two-phase absorbent for capturing CO2, which is characterized by being prepared from the following components in percentage by mass: 25%-30% of N-(2-ethoxyl) ethylenediamine, 0%-3% of N-aminoethyl piperazine, 0%-3% of 2-(1-ethoxyl) pyridine, 10%-13% of N, N '-diethyl ethylenediamine, 15%-20% of N, N'-diethylethylenediamine, 5%-10% of N, N '-diethylethylenediamine, 5%-10% of N, N'-diethylethylenediamine and the balance of water. The invention relates to a cleaning agent which is prepared from the following components in percentage by weight: 1 to 5 percent of N, N-diethylhydroxylamine, 1 to 5 percent of pentamethyldiethylenetriamine, 0 to 2 percent of tert-butylamine ethoxyethanol, 0 to 3 percent of 2-amino-2-methyl-propyl alcohol, 5 to 8 percent of sulfolane, 5 to 8 percent of dimethyl ether, 5 to 8 percent of p-xylene and 5 to 8 percent of n-butyl alcohol. The composition can be prepared by uniformly stirring the components. The preparation method is simple, and the prepared two-phase absorbent can improve the saturated absorption capacity, improve the desorption rate and optimize the performance of the phase change absorbent.

The invention belongs to the technical field of chromatographic separation materials, and discloses a preparation method and application of a GM-8 nanosheet material. The preparation method of the material comprises the following steps: respectively dissolving Cu (NO3) 2.3 H2O and 1, 3, 6, 8-tetra (4-carboxybenzene) pyrene in an organic solvent, mixing, transferring into a reaction bottle, adding trifluoroacetic acid and pyridine, and uniformly mixing and stirring to obtain a reaction mixture; and heating the reaction mixture to react for 7-9 hours to obtain a blue precipitate, cooling the blue precipitate to room temperature, and washing and drying the blue precipitate to obtain the ultra-stable microporous GM-8 nanosheet material. The nanosheet GM-8 is used as a gas chromatography stationary phase, high-efficiency separation and trace detection of xylene isomers can be realized, and the chromatographic column still keeps excellent separation capacity after being stored in an environment with air humidity of 65-90% for 31 months. The capillary gas chromatographic column can realize high-efficiency separation of disubstituted benzene isomers such as xylene, the separation degree of m-xylene / p-xylene is up to 18.2, and a new solution is provided for high-efficiency separation of isomers with similar properties.

The invention relates to an adsorbent based on an X molecular sieve and preparation and application thereof, and a preparation method of the adsorbent comprises the following steps: (1) mixing the X molecular sieve with a binder, molding and roasting to obtain a molded body; (2) treating the molded body obtained in the step (1) with an alkali solution to perform in-situ crystallization on the binder in the molded body to obtain a crystallized product; (3) carrying out partial barium ion exchange on the crystallized product obtained in the step (2) by using a barium salt solution, and drying to obtain a dried product; (4) carrying out ammonium ion exchange on the dried product obtained in the step (3) by using an ammonium salt solution, and roasting in a flowing atmosphere to obtain a roasted product; and (5) performing barium ion exchange and optional potassium ion exchange on the roasted product obtained in the step (4), and then drying to obtain the adsorbent. The adsorbent has at least two kinds of mesoporous channels with different apertures, has high barium ion exchange capacity, high adsorption capacity and compressive strength, and shows good adsorption selectivity and mass transfer performance when used for adsorption separation of p-xylene.

The method is for producing para-xylene using, as a main raw material, a mixed gas of carbon dioxide or carbon monoxide or both thereof and hydrogen. The method including: a reaction step of bringing a raw material mixed gas including the mixed gas into contact with a reaction catalyst under high temperature and high pressure to cause a reaction, to thereby obtain a product gas mixture containing para-xylene; a separation step of cooling the product gas mixture obtained in the reaction step to condense a high boiling point component, to thereby separate the product gas mixture into a water phase containing a water-soluble component, an oil phase containing a xylene mixture, and a gas phase containing an unreacted gas; and a circulation step of mixing at least part of the gas phase having been separated in the separation step into the raw material mixed gas.

The invention discloses a lactobacillus brevis SMF L6 strain for improving the characteristic flavor of fermented fish and application thereof, and belongs to the technical field of aquatic product processing. According to the method disclosed by the invention, low-temperature fermentation is carried out by utilizing a sake lactobacillus wide cloth SMF L6 direct vat set fermentation inoculant to regulate and control the flavor; the method can effectively promote the production of flavor substances such as n-hexyl alcohol, eudesmol, 2-ethylhexyl alcohol, 4-platycladi alcohol, linalool, 4-terpene alcohol, alpha-terpilenol, piperonone, beta-myrcene, alpha-terpinene, D-limonene, beta-phellandrene, gamma-terpinene and the like in the fermented fish. The content of pungent smell and fishy smell substances such as acetic acid, p-xylene, o-xylene, trimethylamine, methyl mercaptan and carbon disulfide is reduced.

Processes and facilities for producing a recycled content organic chemical compound directly or indirectly from waste plastic. Processing schemes are described herein for converting waste plastic (or hydrocarbon having recycled content derived from waste plastic) into useful intermediate chemicals and final products. The waste plastic can be liquified before being introduced to downstream processing. In some aspects, recycled content aromatics (r-aromatics) can be processed to provide recycled content paraxylene (r-paraxylene), which can then be used to provide recycled content terephthalic acid (r-TPA) and / or recycled content polyethylene terephthalate (r-PET).

The invention discloses a preparation method of a hydroxyl-functionalized quaternary phosphonium salt polyion liquid super-crosslinked heterogeneous catalyst and an application of the catalyst in catalysis of a cycloaddition reaction of CO2 and epoxide. Trimethoxytriphenylphosphine and dibromo-p-xylene are firstly subjected to quaternary phosphating to form triphenylphosphine-based ionic liquid, and then the triphenylphosphine-based ionic liquid and biphenyl benzyl dichloride can be subjected to aromatic electrophilic substitution reaction in the presence of 1, 2-dichloroethane serving as a solvent and anhydrous aluminum chloride serving as a Lewis acid catalyst to realize cross-linking, so that the triphenylphosphine-based ionic liquid can be prepared. And methoxy can be removed to form hydroxyl, so that the hydroxyl-functionalized quaternary phosphonium salt polyion liquid super-crosslinked polymer is prepared in one step. The resulting heterogeneous catalyst effectively converts CO2 to cyclic carbonates under milder conditions (80 DEG C, 1 atm) in the absence of a soluble co-catalyst.

The present invention relates to a method for surface modification of a MCM-22 molecular sieve shape-selective catalyst, belonging to the technical field of chemical engineering catalysis. In this preparation method, a macromolecular organic acid is selected to selectively remove the Al sites on the outer surface of the MCM-22 molecular sieve, and then a macromolecular silyl group is grafted onto the hydroxyl defect sites generated on the outer surface of the molecular sieve due to dealumination. This method can avoid blocking the pores of MCM-22, eliminate the outer surface acidity while retaining the internal activity of the molecular sieve, and reduce the pore mouth size, thereby obtaining a MCM-22 molecular sieve shape-selective catalyst with high activity, high selectivity and high stability. When this catalyst is applied to the reaction of alkylation of toluene with dimethyl carbonate to synthesize p-xylene, the activity of the catalyst remains 36% within 20 hours, and the selectivity can reach up to 66% at most.

The present invention provides a method for matching the film formation rate of C-type polyparaxylene dimer, comprising the following steps: S100, constructing a sublimation rate calculation formula, a cracking rate calculation formula, and a film formation rate calculation formula; S200, using the sublimation rate calculation formula, the cracking rate calculation formula, and the film formation rate calculation formula to respectively calculate the sublimation rate, the cracking rate, and the film formation rate, and by adjusting the corresponding sublimation temperature, the cracking temperature, and the film formation temperature, achieving equality of the sublimation rate, the cracking rate, and the film formation rate, thereby achieving speed matching in the film formation process of C-type polyparaxylene dimer. Utilizing the present invention, the film formation efficiency of C-type polyparaxylene dimer can be significantly improved, the product processing time can be shortened by more than 40%, the raw material utilization rate of C-type polyparaxylene dimer can be improved, and the film formation quality of C-type polyparaxylene dimer can be improved, and the C residual substances in the film formation process can be significantly reduced.

The application provides a catalyst and a preparation method and application thereof, and the catalyst comprises a carrier and an active metal component loaded thereon; the carrier comprises ZSM-5 zeolite and a binder, and the molar ratio of SiO2 / Al2O3 in the ZSM-5 zeolite is 15-50; the amount of strong acid centers on the outer surface of the catalyst is less than or equal to 10 mu mol / g; and the ratio of the saturated adsorption amount of p-xylene to the saturated adsorption amount of o-xylene of the catalyst is 3-20 under the condition of 400 DEG C. The catalyst provided by the application can catalyze the generation of benzene from toluene dealkylation under a medium-temperature condition, and the selectivity of benzene is good and the yield is high.

The application provides a C8 aromatic hydrocarbon isomerization catalyst and a preparation method and application thereof. The catalyst contains an active component and a carrier; wherein, based on the weight of the carrier, the carrier contains 5wt%-25wt% of HZSM-23, 5-30wt% of mordenite, 20-60wt% of macroporous alumina and 10wt%-25wt% of a binder component. The method comprises preparation of the carrier and loading of the active metal, wherein the preparation process of the carrier is as follows: HZSM-23 molecular sieve, mordenite, macroporous alumina and a binder are mixed and formed, and the carrier is prepared after drying and calcination. The catalyst is used for C8 aromatic hydrocarbon isomerization reaction, and has the characteristics of high ethylbenzene conversion rate and high xylene yield when the xylene is at an equilibrium concentration.

The application discloses a bifunctional catalyst for preparing p-xylene from carbon dioxide and hydrogen in one step, a preparation method and application, relates to the technical field of catalysts for preparing p-xylene from carbon dioxide and hydrogen, and opens up a new way for selectively hydrogenating carbon dioxide into high-value p-xylene; the application comprises alkali metal modified FeMn oxides and ZSM-5 capsule zeolites, and is used for converting CO2 into p-xylene through one-step hydrogenation; in the alkali metal modified FeMn oxides, Mn is dispersed on the oxide phase of Fe; the ZSM-5 capsule zeolites are subjected to hydrothermal treatment with a TPAOH solution, and the external passivated Bronsted acid sites of the ZSM-5 capsule zeolites can inhibit the structuralization reaction of dimethylbenzene; the bifunctional catalyst can realize the conversion of carbon dioxide into p-xylene in one step, has high carbon dioxide conversion rate, high space-time yield of p-xylene, and long catalyst service life.

A fluidized bed device for coupling naphtha and methanol to prepare aromatics and co-produce olefins and its application method are provided. By using the device, under the action of a catalyst, naphtha reacts with methanol to generate product gas containing aromatics and light olefins as main components. The method can efficiently and selectively convert linear and branched aliphatic hydrocarbons into aromatics, while also increasing p-xylene production through aromatic methylation reactions, with the p-xylene content in the xylene mixture exceeding 75 wt %. The fluidized bed reactor achieves increased p-xylene production by controlling the progression of cascade reactions (naphtha→benzene / toluene→p-xylene). Additionally, it utilizes the methylation reaction of benzene / toluene with methanol to provide in-situ heat for the coupled naphtha-methanol aromatization process, thereby achieving autothermal balance.

The invention discloses an application of p-xylene in prevention and control of straight-spot fly imagoes, and belongs to the technical field of agricultural planting research. Aiming at the problems that the yield of the chenopodium quinoa willd is seriously lost by the chenopodium quinoa willd and the existing prevention and treatment means only depend on chemical agents, the natural component p-xylene of the chenopodium quinoa willd is utilized to remarkably attract adults of the chenopodium quinoa willd, and the chenopodium quinoa willd attractant can be directly used for attracting the adults of the chenopodium quinoa willd and also can be used for preparing the attractant for the the concentration of p-xylene in the attractant is 0.1 mu g / mu L to 100 mu g / mu L. The application is green and environment-friendly, does not need to depend on chemical agents, provides a new way for green prevention and control of the adult straight-spot fly, broadens the prevention and control means of the chenopodium quinoa willd pests, and has important practical application value and scientific significance.

The invention relates to the technical field of waterproof plates, and provides a tear-resistant waterproof plate and a preparation method thereof. The tear-resistant waterproof board is prepared from the following raw materials in parts by weight: 30 to 35 parts of ethylene-vinyl acetate copolymer, 60 to 80 parts of tear-resistant master batch, 0.5 to 1.5 parts of first antioxidant and 3 to 4 parts of compatilizer, the tear-resistant master batch comprises the following raw material components in parts by weight: 20-30 parts of high-density polyethylene, 40-50 parts of linear low-density polyethylene, 1-3 parts of a processing aid and 0.5-1 part of a second antioxidant, and the processing aid comprises fluoro-dimer p-xylene and poly-alpha-methylstyrene. By means of the technical scheme, the problem that in the prior art, waterproof plates are insufficient in tear resistance is solved.

A method for producing 2,5-dimethylfuran according to one embodiment of the present invention includes a step for reacting a furan compound having a specific structure with hydrogen in a non-aqueous solvent in the presence of a hydrogenation catalyst. In this method for producing 2,5-dimethylfuran, the hydrogenation catalyst includes at least one type selected from among a first component group and at least one type selected from among a second component group. The first component group includes chromium, molybdenum, manganese, rhenium, ruthenium, rhodium, iridium, nickel, palladium, platinum, copper, zinc, and the like. The second component group includes aluminum oxide, silicon oxide, titanium oxide, zirconium oxide, carbon, and the like.

The utility model provides a cooling device which comprises a cooling cylinder, a plurality of first partition plates and second partition plates which are evenly distributed are arranged in the cooling cylinder, the first partition plates and the second partition plates are installed in a matched mode, a plurality of cooling pipes which are evenly distributed are arranged on the first partition plates and the second partition plates, and a plurality of stirring shafts which are evenly distributed are arranged in the cooling cylinder. And stirring paddles fixedly sleeve the middle parts of the outer arc surfaces of the stirring shafts. According to the cooling device disclosed by the utility model, when the dimethylbenzene stock solution is cooled, the dimethylbenzene stock solution can be continuously and quickly cooled by extending the flowing path of the dimethylbenzene stock solution in the cooling cylinder and matching with the stirring paddle.

Disclosed are apparatuses and processes for preparation and conversion comprising / using: a fractionation chain (4-6) that produces a xylene fraction (24); a xylene separation unit (10) that treats the xylene fraction to produce a para-xylene extract (39) and a raffinate (40); an isomerization unit (11) treating the raffinate to produce an isomerization product (42) of xylenes fed to the fractionation chain; the synthesis gas production unit (14; 15) that treats the hydrocarbon feedstock (30) to produce a synthesis gas (34) containing CO and CO2; a methanol synthesis reaction section (50) that treats the synthesis gas (34) to produce methanol (51); a toluene alkylation reaction section (13) treating the toluene-containing fraction (23) with methanol (51) to produce an alkylation effluent (32) containing xylene and fed to the fractionation chain.

This application provides an isolation structure and its manufacturing method. The isolation structure includes a substrate, an isolation trench, a flexible dielectric layer, and a filling layer located within the substrate. The flexible dielectric layer is made of hydroxyl-para-xylene. The filling layer covers the surface of the flexible dielectric layer and fills the isolation trench. This flexible dielectric layer can reduce cracks caused by excessive stress in subsequent thermal processes and can adapt to spatial distortion caused by the expansion of residual gas in the isolation trench through deformation under thermal conditions, reducing damage to the substrate, enhancing the electron coupling ability of the HiK material, improving the yield of devices on the substrate, and reducing dark current in devices and white spots in display images from the source. In addition, this flexible dielectric layer does not contain metal, so it will not cause metal ion contamination to the substrate. It eliminates the need for an additional isolation layer, improving the performance of devices on the substrate while simplifying device structure and processes and reducing manufacturing costs.

This utility model discloses an integrated drying and gas purification machine for slide staining, including a machine body, a protective door hinged to the left side of the front end of the machine body, a placement platform in the middle of the bottom wall of the machine body, an electric heating wire on the upper side of the inner part of the machine body, a cavity in the lower side of the inner part of the machine body, an air inlet with an air inlet pipe in the left side of the upper end of the machine body, and an exhaust port on the right end of the machine body. It also includes a purification mechanism; the purification mechanism includes a filter chamber, a filter element, a sealing door, and a fixing component. The filter chamber is located on the right side of the inner part of the machine body, and the filter element is placed inside the filter chamber. A sealing door is hinged to the upper side of the top wall of the filter chamber. The fixing component is located inside the filter chamber and is used to fix the filter element. This integrated drying and gas purification machine for slide staining optimizes the driving method, improves the stability of the filter element during purification, and ensures the purification effect of xylene.

The invention discloses 2-phenyl-4-pinacol boryl-2, 1-boron aza-naphthalene, a 2-phenyl-4-pyrimidinyl-2, 1-boron aza-naphthalene compound and a preparation method of the 2-phenyl-4-pinacol boryl-2, 1-boron aza-naphthalene compound, and belongs to the technical field of organic synthetic chemistry. According to the preparation method, 2-phenyl-4-pinacolboryl-2, 1-boronaphthalene and bis (pinacol) diboron diboron ester are taken as raw materials, CuCl is taken as a catalyst, 4, 5-bis (diphenylphosphine)-9, 9-dimethyl xanthene is taken as a ligand, 2-adamantanone is taken as an additive, p-xylene is taken as a solvent, and the 2-phenyl-4-pinacolboryl-2, 1-boronaphthalene is efficiently obtained. The 2-phenyl-4-pyrimidinyl-2, 1-boron aza-naphthalene compound can be used as a key intermediate, the 2-phenyl-4-pyrimidinyl-2, 1-boron aza-naphthalene compound can be conveniently synthesized through efficient conversion of a C-B bond, and a new way is provided for functional modification of the boron-nitrogen heterocyclic compound.

The present application relates to a kind of paraxylene adsorbent and its preparation method and application, it is related to mixed xylene separation technical field, the active component of the paraxylene adsorbent includes Silicalite-1 molecular sieve;The Silicalite-1 molecular sieve has hydrophobicity, there is no structural defect, contain mesoporous structure at 2.6nm and crystal is the flaky structure of preferential orientation growth along the direction of mass transfer benefit.This application uses this special crystal structure and the Silicalite-1 molecular sieve of morphology as active component, after rolling ball forming, paraxylene adsorbent of spherical shape is made, effectively solve the existing paraxylene adsorbent due to strong water absorption and lead to deactivation, slow adsorption speed and low paraxylene adsorption capacity and other technical problems.

The application discloses a kind of molecular sieve-based microsphere fluidized bed catalyst and its preparation method and application.The catalyst includes transition metal modified molecular sieve, molecular sieve selects at least one in ZSM-5, ZSM-11, ZSM-12, Silicate-I@ZSM-5, Silicate-I@Y, Silicate-I or Silicate-II type molecular sieve, its outer surface Si / Al molar ratio is greater than 250, bulk Si / Al molar ratio is 30~250;Transition metal is selected from at least one in Mn, Cu, Co or Ni.The catalyst of the application is used in the reaction of aromatic selective shape methylation preparation p-xylene, significantly reduces the abrasion of catalyst, improves the conversion rate of toluene and the selectivity of p-xylene.

The utility model discloses a p-xylene crystallization device which at least comprises a raw material input pipeline, the at least one crystallization unit is connected with the raw material input pipeline; the at least one separation unit is connected with the outlet of the crystallization unit; the mother liquor buffer tank is connected with an outlet of the separation unit; an inlet of the mother liquor pump is connected with an outlet of the mother liquor buffer tank; the subcooler is connected with an outlet of the mother liquor pump; the industrial wind input pipeline is connected with the other inlet of the mother liquor pump; and the industrial wind output pipeline is connected with the other outlet of the mother liquor pump. According to the p-xylene crystallization device provided by the utility model, the operation stability of the crystallization device can be improved.

The invention relates to the technical field of butanone-water azeotropic system separation, in particular to a method for separating butanone from a butanone-water azeotropic system. According to the method for separating butanone from the butanone and water azeotropic system, a device is used for separation, and the device comprises an extractive distillation tower, an extraction agent recovery tower and a water-extraction agent separation tower. According to the method, p-xylene is taken as an extraction agent, butanone in a butanone and water azeotropic system is extracted by an extractive distillation tower, and a butanone-p-xylene mixture and a water-p-xylene mixture are obtained. The butanone-p-xylene soluble mixture is rectified and separated into butanone and p-xylene through an extractant recovery tower. And rectifying and separating the water-p-xylene solution mixture into water and p-xylene through a water-extractant separation tower. The extracting agent disclosed by the invention has the advantages of low intersolubility with water and high selectivity to butanone, is low in extracting agent residue and stable in separation effect, and has a good application prospect in separation of a butanone-water azeotropic system.

The present invention discloses a platinum-tungsten bimetallic catalyst for PET depolymerization and a method for directional depolymerization of PET, belonging to the technical field of solid waste recycling. The platinum-tungsten bimetallic catalyst for PET depolymerization is prepared by a deposition-precipitation method, with a mesoporous molecular sieve MCM-48 as a carrier to load the platinum-tungsten bimetallic, the molar ratio of platinum to tungsten elements being 1:0.5-2, and the platinum loading being 4wt%-6wt%. The platinum-tungsten bimetallic catalyst can be used to achieve a one-pot depolymerization of PET to produce p-toluic acid and p-xylene, and the platinum-tungsten bimetallic catalyst can be used multiple times through reduction regeneration, having high catalytic activity. The PET depolymerization method catalyzed by the platinum-tungsten bimetallic catalyst is suitable for recycling and upgrading various forms of PET waste, solving the technical problems of efficient depolymerization and directional conversion of waste PET, and providing a sustainable technical path for the resource recovery of PET.

The invention discloses a start-up optimization method for an aromatic hydrocarbon combination unit, and belongs to the technical field of petrochemical engineering accessories. Comprising the following steps: S1, sequentially connecting a reformate tower, a stripping tower, a redistillation tower, an adsorption feeding tank, an extract tower and a p-xylene tower to extract a PX product; s2, leading out a first reflux pipeline between the stripping tower and the redistillation tower, and connecting the first reflux pipeline to an adsorption feeding tank; s3, in a start-up preheating stage, feeding a material at the bottom of the stripping tower to an adsorption feeding tank through a first reflux pipeline, synchronously heating the redistillation tower and the p-xylene tower at the moment, and heating the redistillation tower, the stripping tower and the extract tower in a peak shifting manner; and S4, after preheating is finished, closing the first reflux pipeline, recovering the material to be treated by the redistillation tower, feeding the material into the adsorption feeding tank, and continuously producing PX according to the flow of S1. Through process optimization, the core problems that the C8 circulation temperature rise is blocked and the thermal joint pressure difference is difficult to establish in the start-up stage are effectively solved, the operation steps are simplified, the risk of manual misoperation is reduced, the start-up period is remarkably shortened, the energy consumption is reduced, and safety and economic benefits are achieved.

The present invention belongs to the field of chemical engineering and specifically relates to a method for enriching and separating mercaptan-containing sulfur compounds in a xylene product produced by hydrogenation of coking benzene. The method comprises: oxidizing the xylene product with iodine or oxygen as an oxidant to convert the mercaptan compounds in the xylene product into disulfide compounds; utilizing the large difference in boiling points between the disulfide compounds and xylene, the majority of the xylene is separated by distillation, thereby achieving enrichment and separation of the mercaptan compounds. The method for enriching and separating the mercaptan-containing sulfur compounds is simple, low-cost, and well-suited for industrial production.

The invention relates to a method and a system for continuously producing 1, 4-cyclohexanedimethanol, and belongs to the technical field of preparation of 1, 4-cyclohexanedimethanol. The problems of high raw material price, expensive catalyst, low production efficiency, harsh reaction conditions and the like in the existing 1, 4-cyclohexanedimethanol production process are solved. The method comprises the following steps: chloridizing p-xylene to prepare p-xylylene dichloride, hydrolyzing the p-xylylene dichloride to prepare terephthalyl alcohol, and hydrogenating the terephthalyl alcohol to prepare the 1, 4-cyclohexanedimethanol. The method takes p-xylene as a raw material, and is high in production efficiency, good in product quality, green, environment-friendly and low in energy consumption.