38results about How to "Meet content requirements" patented technology

The invention provides a preparation method for hard hollow capsules from enteric plant cellulose derivatives and belongs to the technical field of pharmaceutic adjuvants. Plant cellulose is prepared from plant derivatives such as pine, purified cotton and the like. Colorless and transparent hard hollow capsules, colored hard hollow capsules, shading hard hollow capsules and the like can be prepared though the preparation method. The preparation method comprises steps of mixing of plant cellulose, surfactants, coagulant aids, coloring agents and water, molding, drying, coating and the like. The plant cellulose hard hollow capsules are advantaged by stable performances, low water content, environmental protection and safety. The plant cellulose hard hollow capsules can be filled by all kinds of contents.

The invention discloses a glass fiber reinforced plastic flue gas jetting pipe used in a desulphurization technology. The glass fiber reinforced plastic flue gas jetting pipe comprises components of, from the inner side to the outer side: an inner antiseptic layer, a resin-rich structural layer, and an outer antiseptic layer. The inner antiseptic layer comprises a glass fiber surface felt layer and a glass fiber chopped strand felt layer manufactured from pasted oxirene-based resin. Oxirene-based resin takes 70-80wt% of the inner antiseptic layer. According to the weight of oxirene-based resin, 1-10% of silicon carbide and 1-2% of conductive carbon powder are mixed in oxirene-based resin. The resin-rich structural layer comprises normal thickness sections and thickened sections arranged along an axial direction of the jetting pipe. The thickened sections are arranged at connection positions between the glass fiber reinforced plastic flue gas jetting pipe and a separating plate, and between the glass fiber reinforced plastic flue gas jetting pipe and a grate. The resin-rich structural layer comprises alternately paved glass fiber check cloth layers and glass fiber chopped strand felt layers. The surfaces of the glass fiber check cloth layers and glass fiber chopped strand felt layers are pasted by using oxirene-based resin. Oxirene-based resin takes 55-70wt% of the resin-rich structural layer. Correspondingly, the invention provides a manufacturing method of the glass fiber reinforced plastic flue gas jetting pipe used in the desulphurization technology.

The invention discloses a methyl nitrite regeneration method, and is used for solving the problems of low regeneration rate of methyl nitrite, poor operational stability of a system caused by improper side reaction control, increase of operating cost and the like. The methyl nitrite regeneration method comprises the following steps: forming recycled gas containing 5-20% of nitric oxide after synthesis of methyl nitrite and carbon monoxide carbonyl, and entering the recycled gas to a methyl nitrite regeneration reactor in two parts, wherein a small part of recycled gas enters the lower section of the regeneration reactor from the bottom, the rest part of recycled gas and supplementing oxygen gas enter the upper section of the regeneration reactor from the middle part together; spraying fresh methyl alcohol into the tower top of the regeneration reactor, discharging methyl nitrite-containing gas from the tower top, pressurizing tower bottoms led out from the tower by using a pump and entering the tower bottoms to the lower section of the regeneration reactor from the middle part of the regeneration reactor; arranging a reboiler on the tower of the regeneration reactor, filling the lower section of the regeneration reactor with a catalyst, and arranging stuffing and/or a tower plate on the upper section of the regeneration reactor. The methyl nitrite regeneration method is simple in process, low in equipment investment and operating cost and high in regeneration rate of methyl nitrite and can be used for effectively solving the side reaction problem.

The invention discloses a boron removal method and device through an activated slag agent, and belongs to the fields of semiconductor materials and metallurgy. The device is provided with a lobe pump, a furnace base, a medium-frequency induction coil, an insulating layer, a graphite crucible, a stirrer and a lifting device. The method comprises the steps that raw silicon is put into the graphite crucible from a feed port, the lobe pump is started to perform vacuumizing, a medium-frequency induction power supply is started to perform heating, and when the temperature is increased to 1500 DEG C, silicon blocks are completely molten; inert gas is charged into a furnace cavity to enable the temperature to be kept at 1550 DEG C-1650 DEG C, the slag agent is added, the stirrer is started, and first-time slagging is completed; the power of the medium-frequency induction power supply is increased to enable the temperature in the furnace cavity to reach 1700 DEG C-1800 DEG C, the feed port is opened, active components of the slag agent are put into the furnace cavity for the first time, vacuumizing is performed, the stirrer is started, the inert gas is introduced, and second-time slagging is completed; after slagging is completed, silicon liquid is poured into a receiving crucible, standing and cooling are performed, a silicon ingot is taken out, purified low-boron high-purity silicon is obtained, and then boron removal achieved through the activated slag agent is completed.

The invention provides a method for removing impurity boron of metallurgical silicon by a high-basicity refining agent. The method comprises the following steps of: crushing and grinding the metallurgical silicon serving as a raw material; preparing the high-basicity refining agent from CaO, SiO2 and K2CO3 in a certain proportion; fully mixing silicon powder and the refining agent; placing the material in a medium-frequency induction furnace with Ar flow velocity of 5-20L/min, preserving heat at the temperature of 900 DEG C to 1100 DEG C for 30 minutes, then heating the material to 1420 DEG C to 1550 DEG C, preserving heat for 1 hour to 3 hours to remove boron and refine; then preserving heat at the temperature of 1400 DEG C to 1450 DEG C for 30 minutes to ensure that the impurity and the silicon are fully separated; and then cooling the material to obtain the refined silicon, wherein the removal rate of the boron is 97.2 percent. According to the method, the refining agent is obtained by adding high-basicity K2CO3 into CaO-SiO2, the method is more beneficial to removing the impurity boron of the metallurgical silicon, and has the advantages of innovation, good boron removal effect and high practicability, simple equipment, no need of complex blowing or a vacuum system, easiness in operation, simplicity in industrialization popularization and application, and can effectively reduce productive investment.

The invention discloses a hydroxypropyl methylcellulose hollow capsule and a production process thereof. The glue solution of the hollow capsule is prepared from the following components: 120.0g of hydroxypropyl methylcellulose HPMC, 3.5g of carrageenan, 10.0g of titanium dioxide mother liquor, 0.08g of lauryl sodium sulfate, 530.0g of pure water and 0-0.15g of pigment. The production process comprises the following steps: preparing the titanium dioxide mother liquor; preparing HPMC sol; adding pigment into the glue solution; dipping glue, baking, demolding, cutting, registering, inspecting, packaging and putting in storage. The preparation process is simple and strong in operability, the capsule product has good molding property, high safety, good reliability and low water content, effectively takes the curative effect of content, is stable in molecule transmission, does not perform crosslinking reaction with the content, is sufficient in solubility, is little impacted by external temperature and humidity, has long preservation period, and is convenient for transporting and storing.

The invention relates to a method for preparing natural gas by biomass material thermal cracking. The method comprises material smashing, material drying, thermal cracking in an oxygen-free state, cooling and separation and compressing separation steps and the like. The invention also provides a thermal cracking furnace in a thermal cracking process. The structure of the thermal cracking furnace can be simplified by using an oxygen-free thermal cracking environment, and the energy requirement of thermal cracking can be met by only using an electric heater. Compared with the prior art, the method can prepare more natural gas and obtain higher heat value based on the biomass material with the same quality, in particular forestry and agricultural residues.

The invention discloses a method for preparing rutile titanium dioxide by titanium slag, which takes ironmaking byproduct-vanadium-titanium-iron concentrate for directly reducing to obtain a melting part titanium slag as a raw material, takes a hydrochloric acid solution as a solvent, and uses a hydrothermal method to prepare the titanium dioxide/silica intermediate products. The method comprises the following steps: using hydrochloric acid for leaching titanium from the titanium slag with high efficiency, then performing hydro-thermal synthesis on dissolved titanium to obtain titanium dioxide, finally using alkali lye to remove silicon from titanium dioxide to obtain rutile titanium dioxide with high purity, wherein a desilication solution can be used for preparing the byproduct white carbon black. The method uses simple process to obtain the rutile titanium dioxide at low temperature, a high temperature roasting process in a traditional technology can be avoided. The product titanium dioxide can be used for the fields of a catalyst or a catalyst carrier, the byproduct white carbon black can be used as a rubber additive, and hydrochloric acid can be returned for hydro-thermal synthesis and closed cycle usage. The whole technology has the advantages of high resource utilization rate, green environmental protection, low raw material cost, simple process, short flow and easy large-scale production.

The invention relates to the field of treatment of industrial silicon materials, specifically to a method for efficiently removing boron and phosphorus in silicon. The method comprises the following concrete steps: mixing and smelting metallurgical-grade silicon, high-purity aluminum and an element I to obtain a melt I; cooling the melt I to obtain a solidified alloy I; soaking the solidified alloy I in hydrochloric acid to obtain a primary silicon wafer I, crushing the primary silicon wafer I into particles, then immersing the particles in hydrochloric acid, cleaning the particles with waterand drying the particles to obtain silicon without impurity boron; mixing and smelting the silicon without the impurity boron, the high-purity aluminum and an element II to obtain a melt II; cooling the melt II to obtain a solidified alloy II; and soaking the solidified alloy II in hydrochloric acid to obtain a primary silicon wafer II, crushing the primary silicon wafer II into particles, then immersing the particles in hydrochloric acid, cleaning the particles with water and drying the particles to obtain silicon without impurity phosphorus. The method of the invention is simple in process,low in smelting temperature and low in energy consumption; after treatment, a phosphorus content is less than 0.23 ppmw, and a boron content is less than 0.45 ppmw; and the method has high industrialvalue.

The invention discloses a method for separating and purifying verbascoside, and relates to the technical field of biology, the method is separated and extracted from traditional Chinese medicine rehmannia glutinosa, and the method for separating verbascoside comprises the following steps: preparing materials and reagents; performing sample treatment; and separating and purifying the verbascoside. According to the method, beta-glucosidase which is high in price and difficult in source is not used as an enzymolysis reagent, the process route is simpler, industrial production is easier to realize, the content of verbascoside prepared by the method is higher than that of verbascoside prepared by the prior art, the requirement of new drug application on the content can be met, and the method is suitable for industrial production. The verbascoside product is derived from scrophulariaceae plants, the plant source of the verbascoside is expanded, the medicine source is rich, the extraction and preparation method of the verbascoside is optimized and improved, the operation is simple and convenient, the cost is low, only ethanol is used as an organic reagent during operation, toxic reagents such as methanol and acetone are not used, and the verbascoside product is green and environment-friendly.

The invention relates to comprehensive utilization of traditional Chinese medicine magnolia officinalis. Active ingredients extracted on a platform with levels of genomics and proteomics from cortex, leaves, branches, root bark and twigs can be completely used for treating various diseases, such as tumor disease and the like, and have the advantages of obvious effect, definite target spot, small dosage and non-toxicity basically.

The invention discloses a soilless culture nutrient solution mixing device, and belongs to the technical field of soilless culture. The device structurally comprises a box body. A culture chamber is arranged at the upper portion of the box body. A plurality of stock solution storing chambers are fixed to the lower portion of the culture chamber. A feed port is formed in each stock solution storingchamber. The bottom end of each stock solution storing chamber is connected with a mixing chamber through a second pipeline. The bottom end of the culture chamber is connected with a mixing chamber through a first pipeline. The bottom end of the mixing chamber is connected with a mixed liquid storing chamber through a conveying pipeline. A filtering area, a stirring area and a plurality of filtering plates in the filtering area are sequentially arranged in the conveying pipeline. The filtering plates are arranged in the filtering area. A stirring mechanism is fixed into the stirring area. Themixed liquid storing chamber is connected with the culture chamber at the upper portion of the box body through a water pump by means of a liquid conveying pipe. The mixed liquid storing chamber is fixed to a bottom plate. A control device is arranged on the wall of the box body. Stirring can be effectively conducted without losing time, the filtering plates are used for filtering out mediums, plant roots and stems and other large-particle waste left in a nutrient solution, and diseases are avoided.