1248results about How to "Increase added value" patented technology

The invention discloses a carbon capture and energy storage and thermal power generation coupled energy comprehensive utilization system, which comprises a thermal power generation system, an energy storage system and a carbon capture system, and is characterized in that a compression energy storage unit of the energy storage system is coupled to a feed water heat regeneration unit of the thermal power generation system; an expansion energy release unit of the energy storage system is coupled to a steam turbine generator set of the thermal power generation system, and a steam-water cycle working medium in the thermal power generation system serves as a heat storage and cold storage medium of the carbon dioxide energy storage system. The carbon capture system is coupled between the thermal power generation system and the carbon dioxide energy storage system, captures carbon dioxide gas in the flue gas, inputs the carbon dioxide gas into the carbon dioxide energy storage system to serve as a circulating working medium, and heats the circulating working medium in the expansion energy release unit through waste heat of the flue gas. According to the scheme, the operation efficiency of the thermal power generation system and the operation efficiency of the carbon dioxide energy storage system can be improved, the overall energy utilization efficiency of the system can be improved, and meanwhile the emission amount of gas pollutants is reduced.

The invention relates to the technical field of textiles, in particular to a wear-resistant antibacterial flax blended yarn and a preparation process thereof. The method specifically comprises the following steps: S1, after performing ultraviolet irradiation on cotton fibers, putting the cotton fibers into a wear-resistant antibacterial solution, and performing dipping and drying to obtain wear-resistant fibers; s2: (1) modifying chitosan by using 6-maleimidohexanoic acid, so as to obtain modified chitosan; (2) sequentially reacting polyethylene glycol adipate with isophorone diisocyanate, modified chitosan and sodium 2-mercaptoethanesulfonate, and finally emulsifying to obtain a fiber treating agent; s3, (1) performing opening mixing, cotton carding, drawing, roving, spinning and spooling on the linen fibers and the wear-resistant fibers in sequence to obtain a linen blended yarn crude product; and (2) soaking the flax blended yarn crude product into the fiber treating agent, padding and drying to obtain the wear-resistant antibacterial flax blended yarn.

The invention provides a preparation method of an acid-resistant and chlorine-corrosion-resistant porous composite electrode and a device constructed on the basis of the electrode and used for preparing hydrogen and chlorine by electrolyzing a sodium chloride solution, two cavities are provided, an acid or neutral saturated sodium chloride solution is filled in the cavities, the cavities are separated by a proton exchange membrane or a diaphragm, and the proton exchange membrane or the diaphragm is filled in the cavities. And in the electrolysis process, the cathode generates high-purity hydrogen, the anode generates high-purity chlorine, the chlorine is absorbed by sodium hydroxide in the gas collection bottle and generates sodium hypochlorite, or the chlorine is introduced into a sodium bromide / sodium iodide solution to replace bromine / iodine elementary substances, and the chlorine is discharged from the gas collection bottle. The sodium hypochlorite solution and the bromine / iodine water are used for disinfection and sterilization experiments. The corrosion-resistant porous composite electrode for electrolysis of an acidic or neutral saturated sodium chloride solution is prepared, the electrolysis voltage of the corrosion-resistant porous composite electrode is further reduced by loading a cathode / anode catalyst, and an acidic or neutral saturated sodium chloride solution electrolysis device constructed based on the electrode can be used for preparing high-purity hydrogen and chlorine.

The invention discloses a halohydrin dehalogenase mutant with improved dehalogenation efficiency and application of the halohydrin dehalogenase mutant, wild halohydrin dehalogenase comes from radioactive agrobacterium tumefaciens AD1, the wild halohydrin dehalogenase is modified by means of directed evolution, the halohydrin dehalogenase mutant with improved dehalogenation efficiency is screened out, and mutations of the mutant comprise at least one of A83W, P84G and F86W. The halohydrin dehalogenase mutant provided by the invention can efficiently and accurately degrade halohydrin pollutants 2, 3-dichloro-1-propanol and 3-chloro-1, 2-propylene glycol, the toxicity of the halohydrin pollutants is reduced, a high-added-value product is generated, and the dehalogenation efficiencies of the mutant A83W / P84G / F86W on the two substances within one hour can respectively reach 42.2% and 98.6%, which are 6 times and 5.2 times of those of a wild type; the halohydrin dehalogenase mutant provided by the invention can realize efficient dehalogenation at normal temperature in a water phase, does not need additional temperature control equipment, has the characteristics of high efficiency, low energy consumption and high selectivity, has the industrial application advantages of greenness, low carbon, economy and convenience, and is beneficial to pollutant dehalogenation and resource utilization.

The invention belongs to the technical field of cosmetics, and discloses a cyclodextrin-based water-resistant modified polyurethane film-forming agent and a preparation method thereof. The cyclodextrin-based water-resistant modified polyurethane film-forming agent comprises a hydrophilic chain segment and a hydrophobic chain segment, the hydrophilic chain segment comprises a chain segment formed by raw materials of cyclodextrin and 2, 2-dimethylolbutyric acid, and the hydrophobic chain segment comprises a chain segment formed by a raw material of organosilicon. Compared with the prior art, the cyclodextrin-based water-resistant modified polyurethane film-forming agent disclosed by the invention has good film-forming property, water resistance, dispersity, softness and adhesive force, can also be used as a film-forming material of cosmetic products, and enhances the waterproof, sweat-resistant and lasting characteristics of cosmetics.

The invention belongs to the field of catalyst preparation and compound synthesis, and particularly relates to a composite metal catalyst, a preparation method and application of the composite metal catalyst in co-production of diethylenetriamine and piperazine. The composite metal catalyst consists of three parts, namely a main active component, an auxiliary active component and a carrier, the main active component is at least any one of Ni and Cu, the auxiliary active component is at least any one of Mg, Cr, Mn, Co, Sr, La and Ba, and the carrier is Al2O3. The invention also provides a method for co-production of piperazine from diethylenetriamine by using the composite metal catalyst. By adopting the method disclosed by the invention, the coproduction of the piperazine with high added value in the continuous synthesis process of the diethylenetriamine can be realized.

The invention provides a preparation method of high oil-filled liquid regenerated rubber, and belongs to the field of regenerated rubber manufacturing. The method comprises the following steps: mixing and preheating waste rubber powder and a part of softener; feeding the mixed and preheated raw materials into a double-screw or multi-screw extruder for heating and primary decrosslinking; feeding the raw materials subjected to primary de-crosslinking into a parallel co-rotating twin-screw extruder, adding the rest softening agent for multiple times through a plurality of feeding holes in a machine barrel, and extruding to obtain the high oil-filled liquid regenerated rubber. Compared with traditional regenerated rubber, the processing performance is better, the surface of a product is smoother, the production process is low-carbon and environment-friendly, and the additional value of resource utilization of waste rubber is greatly improved.

The invention relates to a high-performance room-temperature self-repairing polyurethane elastomer and a preparation method thereof.The polyurethane elastomer is synthesized from diisocyanate containing asymmetric aliphatic rings, polyether glycol or polyester glycol and a dynamic hydrogen bond chain extender, linear and non-linear hydrogen bonds exist in a polyurethane molecular chain at the same time, and the linear and non-linear hydrogen bonds are different from each other. The existence of the linear hydrogen bonds endows the material with good mechanical properties, the non-linear hydrogen bonds also enable the polyurethane elastomer to maintain the strength and realize the self-repairing effect at room temperature, and the high steric hindrance of the asymmetric aliphatic ring structure can inhibit the crystallization of the polyurethane chain segment, thereby enhancing the transparency of the polyurethane. Compared with the prior art, the polyurethane elastomer prepared by the invention has excellent tensile property, tensile strength of more than 30MPa, fracture strain of more than 1000%, good self-repairing property, repair efficiency of more than 80% after repairing for 48 hours at room temperature under the assistance of trace water, and good transparency.

The invention relates to an anorthite material and a preparation method thereof. The adopted technical proposal comprises the following steps of: according to (ZL200510019664.3) patent technology, namely a method for preparing titanium and a titanium alloy by utilizing titanium-containing furnace slag, taking molten tailings which is extracted with the titanium alloy as a raw material, adding 20 to 50 weight percent of silica, 0 to 60 weight percent of clay and 0 to 40 percent aedelforsite, and cooling a melt to obtain the anorthite material after the mixture is completely molten and a bath composition is uniform; or taking cold tailings extracted with the titanium alloy as the raw material, adding 20 to 50 weight percent of the silica, 0 to 60 weight percent of the clay and 0 to 40 percent the aedelforsite, carrying out mix grinding on the raw material and the admixture until the particle size is less than 0.1 mm, performing blank compression, and calcining the mixture at a temperature of between 1,200 and 1,400 DEG C to obtain the anorthite material. The method takes the tailings extracted with the titanium as the raw material, saves precious bauxite resources, has low cost, ensures that industrial residue is utilized with high added value, is environment-friendly and has simple process.

The invention provides a method for catalytically converting waste PET (Polyethylene Terephthalate) plastic into 1, 4-cyclohexanedimethanol by a two-step method, which comprises the following steps of: 1, hydrogenating the waste PET plastic dispersed in methanol under the action of a nickel-based catalyst to obtain dimethyl 1, 4-cyclohexane dicarboxylate; and 2, centrifugally separating the catalyst and the reaction liquid in the step 1, and hydrogenating the reaction liquid under the action of a CuMgAl catalyst to obtain the target product 1, 4-cyclohexanedimethanol. The 1, 4-cyclohexanedimethanol is a key raw material for producing high-end polyester, and has very high market requirements. Under the optimal reaction condition, the molar yield of the 1, 4-cyclohexanedimethanol can reach 83.8%, and the separation purity reaches up to 99.5%. According to the method, upgrading and recycling of the PET waste are achieved so as to cope with the threat of white pollution to the ecological environment and human health.

The invention provides a NaOH-NaAlO2 combined leaching lithium extraction process by taking low-grade alpha-spodumene as a raw material. The process is realized by the following technical scheme: crushing and grinding the low-grade alpha-spodumene to prepare powder with the particle size of less than or equal to 200 microns; mixing the powder with a NaOH-NaAlO2 mixed solution to prepare slurry, performing hydrothermal reaction on the slurry in a high-pressure reaction kettle, and replacing Na < + > and Li < + > to obtain lithium hydroxide; filtering lithium hydroxide to obtain filter residues and filtrate; drying filter residues to obtain a molecular sieve; performing concentration and impurity removal on the filtrate, performing lithium precipitation to obtain a lithium carbonate crude product, adding a small amount of sodium hydroxide into the filtrate after lithium precipitation, and circulating the filtrate as circulating mother liquor; according to the method, mineral separation and roasting are not needed, the problems that alpha-spodumene needs to be subjected to high-temperature roasting and crystal transformation into beta-spodumene and alpha-spodumene needs to be subjected to high-temperature roasting and crystal transformation into beta-spodumene can be solved, and the method has the advantages of being low in energy consumption cost, short in process, environmentally friendly, simple in process, easy to operate and high in additional value of reaction residues.

The invention provides a dehydrogenation catalyst for preparing an aza-aromatic ring as well as a preparation method and application of the dehydrogenation catalyst, and belongs to the technical field of catalyst preparation. The dehydrogenation catalyst comprises a carrier with specific physical parameters, a first active metal component Pd, at least one of a second active metal component Re, Sn or Ir, and a P-containing active auxiliary agent. The dehydrogenation catalyst provided by the invention can be used for a dehydrogenation reaction of a nitrogen-containing heterocyclic compound as a raw material, the aza-aromatic ring can be directly obtained, the conversion rate of the raw material is 99% or above, the selectivity of the aza-aromatic ring product is 99% or above, the yield is 98-99%, and the service life of the dehydrogenation catalyst can reach 5500 h or above. The dehydrogenation catalyst can be used for preparing various nitrogen heteroaromatic rings with different carbon atom numbers, and is particularly used for preparing the nitrogen heteroaromatic rings by dehydrogenation of nitrogen-containing heterocyclic ring byproducts in the hexamethylenediamine production process, waste oil raw materials can be turned into wealth, and the waste oil raw materials are converted into fine chemicals with high additional value.

The invention provides a lithium ion battery black powder recovery method, which comprises: (1) calcining the lithium ion battery black powder to obtain carbon-free black powder, sequentially carrying out leaching and impurity removal on the carbon-free black powder, and adding an organic amine-containing extraction agent for separation to obtain an organic amine-nickel cobalt manganese complex and a lithium liquid; and (2) carrying out hydrothermal reaction treatment on the organic amine-nickel cobalt manganese complex in the step (1) to obtain a nickel cobalt manganese catalyst, and sequentially carrying out concentration and lithium precipitation on the lithium liquid in the step (1) to obtain lithium carbonate. According to the method, the lithium ion battery black powder is subjected to leaching and impurity removal after being calcined, the organic amine-nickel cobalt manganese complex and the lithium liquid are directly obtained through separation by adding the extracting agent containing the organic amine, the step of multi-step extraction in a traditional extraction method is avoided, lithium metal and nickel cobalt manganese metal are directly separated, the recovery process is shortened, and the recovery efficiency is improved. And the nickel-cobalt-manganese catalyst with high added value is obtained.

The invention relates to a method for reducing molten IF steel inclusions and improving the cleanliness of molten steel. The method comprises the following technological processes of converter steelmaking, LF refining furnace, RH refining furnace and continuous casting. In the RH refining furnace process, cold steel nodules in a vacuum tank are eliminated during smelting, and metal manganese is added to compensate the mass content Mn to 0.07-0.15% according to the manganese content in chemical sample steel in the LF refining furnace process during circulation of molten steel in the vacuum tank; the method comprises the following steps: timely adjusting circulation argon to 60-80 Nm < 3 > / h, adjusting RH circulation argon flow to 90-120 Nm < 3 > / h and decarburizing for 18-25 minutes according to cold steel nodulation in a vacuum tank as well as oxygen content and vacuum degree in steel, performing oxygen determination operation after decarburization is finished, adjusting RH circulation argon flow to 70-90 Nm < 3 > / h, firstly adding carbon granules for deoxidation according to a fixed oxygen value, circulating for 2-3 minutes, performing secondary oxygen determination for aluminum-adding deoxidation alloying, and performing decarburization for 20-30 minutes. And the content of Als in the steel reaches the upper limit of the process target content, ferrotitanium and ferrocolumbium are added, and the process target is achieved by adjusting alloy component compensation at a time. The molten steel cleanliness and the yield are improved, and the smelting cost is reduced.

The invention discloses a method for preparing a waterproof coiled material by using composite coal liquefaction residue asphalt. The method comprises the following steps: mixing matrix petroleum asphalt in a molten state with molten DCLR in a certain proportion to obtain DCLR modified asphalt; adding a certain amount of SBS into the DCLR modified asphalt, shearing for a period of time at a certain temperature, sequentially adding a certain amount of engine oil and rubber powder, continuously shearing for a period of time at a certain temperature, and finally developing for a period of time at a certain temperature to obtain the composite DCLR modified asphalt. Coating the composite DCLR modified asphalt on the upper and lower surfaces of a base to obtain a base body of the waterproof coiled material; the upper surface and the lower surface of the waterproof coiled material base body are coated with isolating membranes or covered with gravel and then cooled and formed. The problems that the added values of the coal liquefaction residues, the waste rubber powder and the waste engine oil are low, the compatibility of the coal liquefaction residues and the petroleum asphalt is poor, and the low-temperature performance and the anti-aging performance of the mixed asphalt are poor are solved.

The walnut processing and conveying equipment with the steering mechanism comprises a conveying table, a conveying steering belt, a containing box and a processing assembly, the conveying steering belt is movably installed on the inner side of the conveying table, the containing box is placed above the conveying steering belt, the processing assembly is fixedly installed above one side of the conveying table, and the processing assembly is fixedly installed above the other side of the conveying table. A conveying steering belt is arranged to drive an upper placing box to move, and different processing treatments are carried out when the conveying steering belt moves to the position below the processing assembly; according to the walnut processing equipment, automatic or semi-automatic production can be achieved, the processing efficiency is remarkably improved, the labor cost is reduced, multi-stage processing treatment is conducted on walnuts in the transportation process, parameters such as the temperature and time in the processing process are accurately controlled through arrangement of the temperature controller, and the walnut processing equipment can guarantee the quality and consistency of products; the efficient processing equipment can reduce damage and loss of walnuts in the processing process, and the utilization rate of raw materials is increased.

The invention discloses a comprehensive utilization process for kaolin tailings. The comprehensive utilization process comprises the following steps: scrubbing the kaolin tailings; the scrubbed kaolin slurry is sieved by a 5mm linear sieve, waste rocks of + 5mm are used as sand-gravel materials, and the waste rocks of-5mm are classified into 2-5mm, 0.1-2mm and-0.1 mm; the method comprises the following steps: grinding and grading ore with the particle size of 2-5mm, returning and regrinding the ore with the particle size of + 0.6 mm, removing tail mud with the particle size of-0.045 mm by grading the ore with the particle size of-0.6 mm, carrying out magnetic separation on the ore with the particle size of 0.045-0.6 mm, carrying out 1-2 sections of strong magnetic separation on the obtained magnetic separation concentrate to obtain strong magnetic concentrate, heating, adding chemicals, scrubbing, and carrying out chemical removal, desliming and washing to obtain primary photovoltaic glass sand and graded fine sand; the method comprises the following steps of: grinding and screening the ore with the particle size of 0.1-2mm, grinding and screening the ore with the particle size of + 0.6 mm until the ore with the particle size of-0.6 mm is completely ground, carrying out spiral chute reselection on the ore with the particle size of-0.6 mm to obtain heavy ore and light ore, carrying out 2-3 sections of magnetic separation on the light ore to obtain magnetic concentrate, carrying out flotation to obtain mica, carrying out graded desliming on the product in a flotation tank, and carrying out graded fine sand with the particle size of-0.1 mm; carrying out heating, chemical adding and scrubbing at the particle size of 0.1-0.6 mm, and then carrying out chemical removal, desliming and washing to obtain secondary photovoltaic glass sand; the yield of the obtained product is higher, and the product index is better.

The present invention discloses a heated instant reconstituted bamboo shoot rice, and relates to the technical field of food processing, and the heated instant reconstituted bamboo shoot rice comprises the following components in parts by weight: 42-46 parts of coarse rice powder, 38-42 parts of rice powder, 14-16 parts of bamboo shoot powder, 33-36 parts of fresh bamboo shoot sauce, and 0.6-0.7 part of monostearin. The preparation method comprises the following steps: respectively removing impurities from the dried bamboo shoots, the crushed brown rice and the crushed rice, crushing and sieving to obtain bamboo shoot powder, brown rice powder and rice powder; preparing fresh bamboo shoot sauce; weighing the brown rice flour, the rice flour, the bamboo shoot powder, the fresh bamboo shoot sauce and the monostearin according to the proportion, and uniformly stirring and mixing to obtain a loose and wet powdery mixed material; putting the mixed material into a nine-section twin-screw extruder, and extruding and curing step by step; extruding the cured mixed material into rice grains from a die hole by adjusting the rotating speed of a rotary cutter of an extruding machine; and drying the formed rice grains to obtain the regenerated bamboo shoot rice product. The prepared instant heated reconstituted bamboo shoot rice integrates the nutritional ingredients of the brown rice, the rice and the bamboo shoots, the cost performance is high, and the utilization rate and the additional value of the bamboo shoot raw materials, the brown rice and the crushed rice are increased.

The invention discloses micro-chemical continuous synthesis equipment and preparation method of nano barium sulfate / barium carbonate, and the micro-chemical continuous synthesis equipment comprises a support frame for bearing the whole equipment; the outer shell is fixed on the support frame, and a plurality of annularly distributed arc-shaped openings are formed in the lower part of the outer shell; the top of the inner shell is fixedly connected with the top of the outer shell, and the lower portion of the inner shell is provided with an adjusting arc opening corresponding to the arc opening. The rotary adjusting assembly is rotationally arranged between the outer shell and the inner shell; the continuous phase conveying device is fixedly arranged in the center of the upper part of the inner shell; the dispersed phase conveying device is fixed in the center of the lower part of the inner shell; the adjusting conveying device corresponds to the arc-shaped opening in the outer shell and is fixed on the outer side of the dispersed phase conveying device; and the collecting assembly is fixed at the bottom of the dispersed phase conveying device and corresponds to the inner shell and the outer shell. According to the invention, controllable growth of crystal grains can be realized, the product size is uniform, the nanocrystallization degree is high, and supporting facilities such as front-end pretreatment and rear-end filtering and drying of a traditional process can be coupled.

The invention relates to a synchronous grouting material based on muddy silt shield muck and a preparation method thereof, and the synchronous grouting material comprises the following raw materials in parts by weight: 13 to 16 parts of cement, 16 to 20 parts of slag, 142 to 147 parts of fine sand containing silt powder, 0.03 to 0.1 part of trimethylsilyl ethyl acetate, 0.07 to 0.17 part of disodium hydroxyethylphosphonate, 0.03 to 0.1 part of pentasodium amino trimethylene phosphonate and 63 to 67 parts of water. According to the invention, the fine sand containing mud powder is used as a main raw material to replace bentonite and fine sand in synchronous grouting in the prior art, and is combined with a specific cement additive, so that the compressive strength and the impermeability of the synchronous grouting material are effectively improved through the synergistic effect of the components, local materials can be used, and the outward transportation and disposal cost of a large amount of muck can be greatly reduced.

The invention discloses a method for preparing PDRN with different molecular weights and application of the method. Salmonidae testis are taken, protamine cells are subjected to enzymolysis through protease K, enzymatic hydrolysate is pretreated through ultrasonic waves, a pretreated sample is subjected to DNaseI enzymolysis, and therefore PDRN with the target molecular weight is obtained. According to the method, the problem of single molecular weight of PDRN in the prior art is solved, and products with different molecular weight ranges can be accurately prepared by combining ultrasonic treatment with DNaseI enzymolysis, namely changing the power and time of ultrasonic treatment and the enzyme amount and enzymolysis time of DNaseI; the molecular weight range can be concentrated in 500-1000 bp, 1000-2000 bp and 2000-4000 bp, the situation that the molecular weight range is wide and fragments are not concentrated is effectively avoided, the product specification is relatively concentrated, and the method is suitable for industrial application.

The invention provides a process method for improving quality of household garbage through thermal sorting and quality-improved biomass powder obtained through the process method, and relates to the technical field of solid waste treatment. The technological method comprises the following steps that the household garbage is subjected to coarse crushing, and a crushed material with the particle size smaller than or equal to 100 mm is obtained; curing and dehydrating the crushed material, and drying after percolate flows out to obtain a dried material; performing primary drying on the dried material to obtain a first dried material; carrying out hot air separation on the first dry material to respectively obtain a heavy substance and a light substance; carrying out X-ray separation on the heavy substance to respectively obtain an organic matter and an inert matter; carrying out secondary drying on the light substance and the organic matter to obtain a second dried material; the second dry material is sequentially subjected to baking, cooling, primary crushing and primary screening, and oversize products and undersize products are obtained respectively; and carrying out second-stage crushing and second-stage screening on the screen underflow to obtain the quality-improved biomass powder.

The invention discloses a preparation method and application of high-fiber low-GI-value biscuits, and the preparation method comprises the following steps: S1: carrying out superheated steam treatment on sea rice bran to obtain stabilized sea rice bran; s2, inoculating probiotics into the stabilized sea rice bran obtained in the step S1, and fermenting to obtain fermented sea rice bran; and S3, uniformly mixing the fermented sea rice bran obtained in the step S2 with auxiliary materials, and baking to obtain the high-fiber low-GI-value biscuits, the fermented sea rice bran accounts for 12-18% of the mass of the high-fiber low-GI-value biscuit on a dry basis, and the GI value of the biscuit is 30-48. According to the preparation method provided by the invention, the sea rice bran is treated through superheated steam processing and probiotic fermentation, and lipase, polyphenol oxidase and peroxidase of the sea rice bran are inactivated, so that the sea rice bran is stable in quality and improved in flavor, the content of total phenols capable of inhibiting amylase activity is increased, and the variety of deeply-processed sea rice products is enriched.

The invention provides a process system and a process method for recycling a hexafluoropropylene oxide byproduct high-boiling residue, and relates to the field of fine fluorine chemical industry. The process system comprises a heat exchange device, a tubular pyrolysis reaction device, a carbonyl fluoride-trifluoroacetyl fluoride separation tower, a tubular cracking reaction device, a water washing device and an alkali washing device. According to the method disclosed by the invention, the industrial-grade carbonyl fluoride and trifluoroacetyl fluoride are prepared by catalytically pyrolyzing the hexafluoropropylene oxide by-product high-boiling residue; furthermore, a byproduct high-boiling residue of hexafluoropropylene oxide is subjected to complete catalytic cracking to obtain carbonyl fluoride, and a byproduct industrial hydrofluoric acid can be obtained. According to the process system and the process method, the hexafluoropropylene oxide byproduct is recycled into carbonyl fluoride, trifluoroacetyl fluoride and industrial hydrofluoric acid with high added values, harmlessness and recycling of the hexafluoropropylene oxide byproduct high-boiling residues are achieved, the utilization rate of fluorine atoms is 100%, and the process method is mild in reaction condition, economical and environmentally friendly.

The present application discloses a method for preparing a carbon material for a battery, comprising: filtering and concentrating papermaking black liquor to obtain liquid lignin; polymerization: adding a cross-linking agent to the liquid lignin for cross-linking and curing reaction to obtain a lignin polymer solid; pre-oxidation: pre-oxidizing the lignin polymer solid to obtain a lignin-based resin; pre-carbonization: pre-carbonizing the lignin-based resin in a non-oxidizing gas atmosphere to obtain a carbon material precursor 1; gas phase deashing: gas phase deashing the carbon material precursor 1 in a non-oxidizing gas atmosphere under the action of a halogen compound and / or a halogen element to obtain a carbon material precursor 2; calcination: crushing the carbon material precursor 2 and calcining it in a protective atmosphere to obtain a carbon material for a battery. The method of the present application effectively improves the expansion and foaming phenomenon during lignin carbonization, and the obtained carbon material has low ash content, controllable specific surface area, and excellent electrochemical performance. A lignin-based resin as mentioned above is also disclosed.

The beneficiation method comprises the following steps that (1) after ilmenite is pretreated, the ilmenite is treated through a high-intensity magnetic separation technology, and coarse ilmenite concentrate is obtained; the strong magnetic separation process is carried out by adopting an SHP strong magnetic separation device; and (2) the rough titanium concentrate is subjected to electric separation process treatment, and titanium concentrate is obtained. According to the beneficiation method of the ilmenite, the ilmenite concentrate with the extremely low calcium and magnesium content is obtained, the requirement that the content of CaO and MgO in boiling titanium dioxide chloride raw materials is smaller than or equal to 1.50% is met, the grade of the ilmenite concentrate product can be improved to 48% or above, the recovery rate can reach 90%, the additional value of the beneficiation product and the economic benefit of a production line are improved, and the beneficiation method is suitable for large-scale industrial production.

The invention belongs to the field of polymer synthesis, and discloses a polymerization method for regulating the molecular weight of polyketone. A nickel catalyst is adopted to catalyze ethylene, CO and propylene ternary polymerization under the action of adding a chain transfer agent and a stabilizer to directly prepare a series of ternary polyketone macromolecules with different molecular weights and adjustable melting points, the synthesis route is simple and convenient to operate, the reaction conditions are relatively mild, the molecular weight range of the obtained polyketone is relatively wide, and the production cost is low. The method is suitable for preparing multi-purpose and multifunctional polyketone high polymer materials through multiple processing ways. The molecular weight of the obtained polyketone is more than 80,000 and less than 200,000, and the polyketone can be processed into engineering plastics in injection molding, extrusion molding and other modes; the molecular weight of the obtained polyketone is as high as more than 9 million, and the application prospect of the polyketone for solution spinning into a polyketone super-strong fiber product can be met.

The invention provides a biisoquinoline-based iron complex which has a structure as shown in a formula (I), and also provides a preparation method of the biisoquinoline-based iron complex and an application of the biisoquinoline-based iron complex as a catalyst for an anisole hydroxylation reaction. The invention further provides a method for preparing p-hydroxyanisole and co-producing o-hydroxyanisole. When the biisoquinoline-based iron complex provided by the invention is used for catalyzing hydroxylation reaction of anisole, excellent reaction activity and selectivity to hydroxyl products can be obtained, a new process thought is provided for industrial production of p-hydroxyanisole, and the biisoquinoline-based iron complex has very important economic value and social value, # imgabs0 #

The invention relates to the technical field of electronic ceramics, in particular to a low-cost ultra-low dielectric microwave dielectric ceramic material and a preparation method thereof.The low-cost ultra-low dielectric microwave dielectric ceramic material comprises, by mass, 4.1% of MgO, 36.4% of H2SiO3, 31.5% of Al2O3 and 28% of talc, talcum powder and Al2O3, H2SiO3 and MgO with the purity larger than or equal to 99% serve as initial raw materials, the microwave dielectric material Mg2.15 Al4Si5O18.15 is prepared through a solid-phase sintering method, and the microwave dielectric ceramic material is prepared through a microwave sintering method. The microwave performance of the material is excellent, the dielectric constant epsilon r is 3.82-4.42, the quality factor Q * f is 36653-64628 GHz, and the temperature coefficient of resonance frequency tau f is-26.02--24.80 ppm / DEG C. The ultra-low dielectric microwave dielectric ceramic material adopts talc to replace part of a silicon raw material and a magnesium raw material, the content of the silicon raw material and the magnesium raw material is greatly reduced, compared with the silicon raw material and the magnesium raw material, the talc is extremely low in cost, and the cost is low. The raw material cost is reduced, the preparation is easy, and great commercial potential is achieved. In addition, the added value of talc is improved, and development of related industries is promoted.

A process for the co-production of caustic soda, soda ash and barium sulfate by a salt carrier and witherite, wherein a salt carrier solution or a salt carrier is used as a raw material, mixed with a light brine and evaporated to obtain a high-purity salt product and a salt-making mother liquor; the high-purity salt product is exported, or dissolved to obtain a high-purity brine, and the high-purity brine or the salt carrier solution is decalcified and magnesium is removed to obtain a primary brine; the primary brine is refined to obtain a secondary brine; the secondary brine is electrolyzed to obtain a liquid caustic soda product, light brine and hydrochloric acid; ammonium brine is mixed with a salt-making mother liquor and an ammonium precipitation mother liquor and evaporated at high temperature to obtain refined salt and a salt-precipitation mother liquor; the refined salt is exported, or mixed brine is obtained, and caustic soda and soda ash solutions are added to obtain refined brine; the refined brine is subjected to double decomposition reaction to obtain baking soda and a heavy alkali mother liquor; the salt precipitation mother liquor is evaporated at low temperature to obtain ammonium chloride and an ammonium precipitation mother liquor; the ammonium brine is deaminated and evaporated at high temperature to obtain a salt-ammonium co-saturated salt mother liquor, or the ammonium precipitation mother liquor is steam distilled with lime to obtain ammonia and distillation waste liquid; the distillation waste liquid, gypsum and witherite are reacted to obtain calcium carbonate and a decalcified mother liquor.