479results about How to "Lower oxygen levels" patented technology

A multi-layer thin film for encapsulation and the method thereof are provided. The multi-layer thin film for encapsulation includes a protective layer composed of aluminum oxide, a single or double barrier layer composed of silicon nitride (SiN_x), and a mechanical protective layer composed of silicon dioxide (SiO₂). The multi-layer thin film can be economically fabricated by using the existing equipment, and has a high level of light transmission over 85% while showing a low level of oxygen and moisture penetration. Additionally, due to superior adhesive strength between the thin films, and high resistance against impacts by heat or ion during a fabricating process, reliability of fabrication is enhanced, and it can thus efficiently used in encapsulating an organic light-emitting device (OLED), a flexible organic light emitting device (FOLED) in a display field, and the cells such as a thin film battery and a solar cell.

The invention discloses a method for transplanting trees with whole canopy, which comprises the following steps: a, determining the size of mud balls and cutting roots; b, pruning; c, digging out themud balls and packaging; d, preparing a plant pit; e, planting; and f, maintaining. The invention aims to overcome the defects in the prior art to provide the method for transplanting the trees with whole canopy, which is scientific, reasonably, mature, orderly, and capable of improving the survival rate of the transplanted trees. The method for transplanting the trees with whole canopy has the survival rate of the trees of above 85 percent, ensures that the transplanted trees have good visual effect, and simultaneously achieves good economic and ecological benefits.

The present invention relates to a technological process for purifying hydrogen gas by using hydrogen-rich gas source. Said process includes the following several procedures: a), raw material gas compression; b), decarbonization and dehydration; c), membrane separation; d), catalytic reaction to make deoxidation; and e), pressure swing adsorption.

The invention provides a low-NOx grate-rotary kiln pellet production technology. The production technology includes utilizing blended flue gas W exhausted from a down-draft drying section (DDD) and aprimary preheating section (TPH) as cooling air to be delivered to an air inlet of (1) a primary circular cooling section (C1) and (2) an air inlet of a secondary circular cooling section (C2), spraying a reducer into a bottom air box of the circular cooling section (C2), making the reducer and the blended flue gas exhausted from the down-draft drying section (DDD) and the primary preheating section (TPH) to react with NOx so as to achieve SNCR (selective non-catalytic reduction) denitration. The low-NOx grate-rotary kiln pellet production technology has the advantages that the production pressure of enterprise atmospheric pollutant emission limits on pellet calcination equipment can be reduced to a certain degree, and the production technology is saving in investment, low in running costand remarkable in NOx emission reduction effect.

The invention discloses a device and method for stabilizing air pressure in a sealed molding chamber for 3D printing of metal. The device mainly comprises an oxygen content detecting device for detecting the content of oxygen in the molding chamber, a vacuumizing device for the molding chamber and a pressure sensing device for detecting air pressure in the molding chamber; and the oxygen content detecting device, the vacuumizing device and the pressure sensing device are controlled by the control device, and a way of simultaneously introducing inert gases into the molding chamber and vacuumizing is adopted, so that the content of oxygen in the molding chamber is kept to be reduced, and the air pressure is kept stable. Therefore, the stability and quality of an equipment molding process can be greatly improved, and the safety and reliability of a processing course can be ensured. The device and technical means of the method are simple, convenient and easy; the molding chamber works at positive pressure, so that oxygen in the atmosphere can be kept difficult to enter the sealed molding chamber; in addition, dust cannot be easily raised in the 3D printing process of the metal.

The invention provides an ABS powder drying method, comprising a step of powder drying and a step of powder recovery. In the step of powder drying the technology of utilization of waste heat of condensed water comprises conveying the steam condensed water in a nitrogen heater to a buffer hot water tank as heating medium hot water in a heater. A slurry recovery tank is connected to a bottom portion of a washing tower. The upper portion diameter of the washing tower is slightly bigger than the bottom portion diameter. No filling material and no tray floor are arranged inside the washing tower. The washing tower is provided with a demister, and second spray water in the upper portion of the washing tower. A split-range controller is arranged on the top portion of the washing tower. A first fire extinguishing device is installed in a fluidized bed dryer. A second fire extinguishing device is installed at the exit port of a cyclone separator. An oxygen detector is installed at a nitrogen inlet side of the nitrogen heater. The method of the invention has the advantages of full utilization of the waste heat, energy saving and consumption reduction, heat utilization efficiency improvement, short process flow, reduction of powder loss, reduction of equipment investment, high operation flexibility and stability in the whole technology process, a good ABS separating effect, and good safety performance.

The invention provides a safe heating method for a color-coating line paint curing oven. The method adopts a double safe operation mode for the simultaneous control of the blast volume for safely discharging waste gas with rich solvent in a curing oven and the content of oxygen in the curing oven; a fan with the safe blast volume pumps out the waste gas in the curing oven to ensure that the content of the organic solvent in the curing oven is lower than one fourth of the lower explosive limit, so the explosion can be avoided no matter what content of the oxygen in the curing oven is; the waste gas is completely incinerated and pyrolyzed in an incinerator for removing the poisonous organic matter in the waste gas, and the content of remained oxygen in the gas after combustion is controlled under 5 percent during incineration, so explosion is avoided again because the content of the organic solvent is always out of the explosion range due to the shortage of oxygen gas no matter how partial organic solvent changes; and the high-temperature waste gas is directly delivered back to the curing oven after utilized through a plurality of heat exchangers, so that the content of oxygen in the curing oven is controlled. The invention not only solves the problem of environment pollution but also can fully utilize energy to solve the problem of heat source supply in color-coating line production.

The invention discloses a switch cabinet capable of automatically cooling and dehumidifying, and belongs to the field of switch cabinets. The switch cabinet comprises a cabinet body provided with an exhaust tube at the top, a cooling device and a dehumidifying device, wherein the dehumidifying device comprises a gas suction pump, a moisture tube, a dry gas tube and a drying tank, the both ends of the drying tank are detachably connected with the moisture tube and the dry gas tube, the other end of each of the moisture tube and the dry gas tube stretches in the cabinet body, and the moisture tube is connected with the gas suction pump; the cooling device comprises a dry ice production device, a dry ice storage box and a circulation tube, the dry ice production device is communicated with the dry ice storage box through a middle tube, the dry ice storage box is communicated with the dry ice production device through the circulation tube, a temperature sensor, a humidity sensor, a smoke sensor and a gas pressure detector are arranged in the cabinet body, and a controller is arranged at the outer side of the cabinet body. According to the switch cabinet disclosed by the invention, a circulation cooling system is formed by virtue of dry ice gasification, the heat dissipation efficiency is high, and moreover, the dehumidifying device is simple in structure and free from generating additional heat during working.

The invention discloses a catalytic combustion inerting aircraft fuel tank system with supplementary air, which belongs to the technical field of fire prevention and explosion protection. The invention also discloses its control method. Flameless catalytic combustion is carried out in the reactor to generate carbon dioxide. Nitrogen that does not participate in the reaction and carbon dioxide generated by the reaction are used as a mixed inert gas to inert the fuel tank to achieve the purpose of fire and explosion protection. The system is also designed to use engine bleed air to promote the reaction. It provides two reaction modes of high flow rate and low flow rate. By switching between large flow rate and low flow rate inerting mode, the time required for inerting is greatly shortened. It has the advantages of simple process, high inerting efficiency and no pollution.

The invention discloses a composite vitamin immunopolysaccharide nano micro-emulsion for livestock and poultry. The micro-emulsion comprises the following raw materials: active ingredients, an emulsifier, a co-emulsifier and a solvent, wherein the active ingredients comprise the following components by weight parts: 8.3-21 parts of lipid-soluble vitamin, 45.5-67.3 parts of water-soluble vitamin, 1.1-10.2 parts of amino acid, 110-170 parts of immunopolysaccharide, 0.5-1.5 parts of an antioxidant and 3-8 parts of a preservative. The micro-emulsion provided by the invention has the characteristics that the emulsifier consumption is reduced, the use is convenient, double effects of improving immunity, disease resistance and nutrient uptake of the livestock and poultry are achieved, the loss in a processing process is low and the properties in a storage process are stable. The invention further provides a preparation method and application of the composite vitamin immunopolysaccharide nano micro-emulsion for livestock.

The invention relates to a coal mining method for co-mining gas in a mine. A method for injecting nitrogen in a sealed manner is adopted to close an upper drift and a lower drift of a stope face to ensure that the concentration of gas in a closed space is over 20%, the concentration of oxygen is lower than 12%, so that the explosive hazard of the gas is eliminated, and high-concentration gas in a roadway is drained so as to be utilized. A safety pressure-relief roadway needs to be remained in the mine with dangers of coal and gas outburst, and is used for releasing high-pressure gas generated by coal and gas outburst, and improving disaster resistant capability of the mine. An air regulating system is arranged in the closed space for regulating air, and a worker operates in the closed space under the condition that the safety protection is well done. Due to adoption of the method, the problem of gas explosion is solved fundamentally, the utilization ratio of gas is improved, fire disasters of the coal mine are eliminated fundamentally, the oxidation corrosion of various metal equipments is reduced, and simultaneously the equipment does not have anti-explosion requirements. As workers breathe air carried per se, the occurrence of respiratory occupational diseases is avoided. Therefore, the coal mining method for co-mining gas has extremely large popularization value.

The invention discloses a pre-oxidation furnace, which comprises a furnace frame on which a furnace body is fixed; the inside of the furnace body is fixed with horizontally arranged clapboards which divide a furnace retort in the furnace body into a plurality of layers of mutually independent furnace chambers; a front end face and a rear end face which are opposite on each layer of furnace chamberare respectively provided with a yarn inlet and a yarn outlet; opposite side walls of each layer of the furnace chamber are provided with an air inlet and an air outlet; the pre-oxidation furnace comprises a fan; and an air outlet of the fan is communicated with the air inlet of each layer of the furnace chamber through an air intake system, while an air inlet is communicated with the air outletof each layer of the furnace chamber through an air outlet system. The pre-oxidation furnace has simple structure, and solves the problems of the prior pre-oxidation equipment in aspects of temperature uniformity, an oxygen content control system and a spontaneous precursor combustion phenomenon, and an effective space of a hearth is fully utilized, so equipment and production cost is saved, and the economic production of carbon fibers is feasible.

A method for maintaining the tender texture and taste of frozen fresh-water shrimp, crab, or other aquatic products with shell includes such steps as washing the fresh living ones, immersing in the solution of water preserving agent and antioxidant, steaming, quick freezing, vacuum packing and cold storage.

The invention relates to a biological hydrogen production technology, in particular to a method for improving the chlamydomonas reinhardtii hydrogen production amount of a leghemoglobin ferrous chelate enzyme gene. The traditional chlamydomonas reinhardtii hydrogen production method has the defects that chlamydomonas reinhardtii hydrogen enzymes are sensitive to oxygen and easily restricted by the oxygen to lose activity, and the chlamydomonas reinhardtii hydrogen production effect is limited. The invention discloses an application of a leghemoglobin ferrous chelate enzyme gene and a globulin subunit gene to hydrogen production by constructing the leghemoglobin ferrous chelate enzyme gene hemH and the globulin subunit gene lba in a chlamydomonas reinhardtii chloroplast expression vector, transferring the expression vector in the chlamydomonas reinhardtii chloroplast and expressing the hemH-lba gene in the chlamydomonas reinhardtii chloroplast. The invention has the advantages that the content of oxygen in a closed culture system of the transformed chlamydomonas reinhardtii is reduced obviously faster than that of the chlamydomonas reinhardtii of an un-transformed gene, the oxygen content is kept at a lower level, and the hydrogen production amount is obviously increased.

The invention belongs to the technical field of power facilities and particularly relates to a fireproof power cable trench. The fireproof power cable trench comprises multiple trench bodies; each trench body comprises a bottom plate, side baffles and a cover plate; one accommodating cavity and multiple discharge ports are arranged in the side baffles and on the cover plate; the discharge ports are located at the inner side of the cable trench; the accommodating cavity and the multiple discharge ports are communicated; the accommodating cavity is internally provided with a fireproof material;and the discharge port is provided with a plugging mechanism. Through improving the structure of the trench body, the accommodating cavity with the fireproof material is arranged in the side baffles and the cover plate, self extinguishing is carried out while waiting for rescue, and secondary fault of a power device is avoided.

The invention provides a sun-proof skin care composition and a preparation method thereof. The composition comprises main raw materials including millet bran oil, oryzanol, procyanidolic oligomer, silicon dioxide, titanium dioxide and the like. The preparation method comprises the following steps: taking liquid paraffin, distill monoglyceride, the millet bran oil and the oryzanol as a phase A; taking the procyanidolic oligomer, polyglycerol fatty acid ester, sucrose fatty acid ester, glycerol and deionized water as a phase B, and the silicon dioxide and the titanium dioxide as a phase C; taking ethylparaben and essence as a phase D; respectively heating and dissolving the phase A and the phase B, so that the temperature achieves 60-75 DEG C; slowly adding the phase B and the phase C to the phase A under a mixing condition respectively; carrying out vacuum nitrogen charge treatment on the system, and adding the phase D when emulsion is cooled to about 45-55 DEG C; and evenly emulsifying and cooling to room temperature. The emulsion prepared from the sun-proof skin care composition can play a role of absorbing or shielding different bands of ultraviolet rays.

Described herein is a method for creating a channel through a foreign material located in a septum of a heart at the site of a septal defect. The foreign material defines a material first surface and a substantially opposed material second surface, and the channel extends through the foreign material at least partially between the material first and second surfaces. The method uses an apparatus including an electrode and includes the steps of: positioning the electrode substantially adjacent to the material first surface; energizing the electrode with a radiofrequency current; and using the electrode energized with the radiofrequency current to deliver energy into the foreign material to create the channel.

The invention discloses a Trichosanthes kirilowii Maxim seed processing and storage method, belonging to the technical field of food processing and storage. The method comprises the following steps: (1) selecting raw materials; (2) preparing favoring solution; (3) boiling at high pressure, and flavoring; (4) vacuum drying; (5) vacuum packaging by using composite membranes; and (6) listing or storing bagged products. The method improves the traditional processing technology of Trichosanthes kirilowii Maxim seeds, changes high-temperature quick-frying at 260 DEG C into high-pressure boiling and flavoring at 121 DEG C, inhibits the hydrolytic rancidity and the oxidative rancidity of Trichosanthes kirilowii Maxim seed oil, decreases the acid value and the peroxide value respectively by 39.0 percent and 36.4 percent when being compared with that of the traditional processing method, and prolongs the storage period and the shelf life of the processed products to 6-8 months from the original 2-3 months. The method can be popularized and applied in roasted food processing enterprises.

The invention relates to a platinum channel mixing barrel and a platinum channel mixing barrel device. The platinum channel mixing barrel comprises a stirring barrel body with a barrel opening, a molten glass inlet and a molten glass outlet, wherein the mixing barrel body is also communicated with a hot-gas supply device for blowing an inert hot gas into a space above a free water surface in the mixing barrel body, so that the inert hot gas blown by the hot-gas supply device flows into the space above the free water surface and then is sent out from the barrel opening. Oxygen in the space is diluted and discharged by blowing the inert hot gas into the space above the free water surface in the mixing barrel body, so that volatilization of a precious metal component exposed in the space is inhibited and a precious metal volatile matter of generating precious metal defects is reduced from the source. The generated precious metal volatile matter can be taken out of the space along with continuous injection of the inert hot gas into the space above the free water surface, and the condensation of the precious metal volatile matter can be reduced, so that the probability of generating the precious metal defects in a glass substrate is reduced and the yield and the quality of a product are improved.

The invention relates to exogenous gene expression and biological hydrogen production technologies, in particular to a method for increasing exogenous gene expression quantity and Chlamydomonas reinhardtii hydrogen production quantity by codon optimization. In the prior art, the expression efficiencies of exogenous leghemoglobin genes hemH and lba in Chlamydomonas reinhardtii chloroplast are low, thus influencing the increase of the Chlamydomonas reinhardtii hydrogen production quantity. The invention discloses a method for respectively optimizing the codon bias of the leghemoglobin genes hemH and lba. The codon-optimized hemHc and lbac genes are transferred into the Chlamydomonas reinhardtii chloroplast to be expressed. The invention obviously increases the expression quantity of the exogenous recombinant protein; the expression quantity of the exogenous leghemoglobin hemH and Lba in the Chlamydomonas reinhardtii chloroplast is increased by 6.8 times; and compared with the non-codon-optimized hemH and lba transgenic Chlamydomonas reinhardtii, the Chlamydomonas reinhardtii hydrogen production quantity is increased by 22%. The invention is applicable to regulating and controlling the exogenous gene expression of more species having codon bias.

The invention discloses a fresh-keeping processing and packaging process for lotus seeds. The process comprises the following steps: draining fresh lotus seeds for 1 h, and precooling the lotus seeds in an air-cooled cold storage at 0-2 DEG C for 24 hours, until temperature at the lotus seed center drops to 2 DEG C; stripping the lotus seeds off seedpod of the lotus, and keeping the cyan skin; immersing the cyan lotus seeds with a chlorine dioxide solution with concentration of 100ppm for 15 min, taking out the lotus seeds, and rinsing the lotus seeds with clear water for 5 min; immersing the lotus seeds into a mixed solution containing 25% of VC and 0.5% of citric acid for 10 minutes, with temperature of the immersion solution controlled at 0-4 DEG C, taking out and draining the lotus seeds; and filling the cyan lotus seeds without any water on the surface into a box, and packaging the fruits by a controlled atmosphere packaging method. According to the above process provided by the invention, a fresh-keeping period of the lotus seeds is prolonged from an original 15 days to 3 months, without loss of appearance, color or taste of the lotus seeds.

The invention discloses a production method of germinated brown rice, which comprises the following steps of: (1) cleaning and disinfection; (2) soaking and sterilization; (3) heat treatment; (4) germination; (5) pre-gelatinization; (6) tempering; and (7) drying and vacuum packaging. The method disclosed by the invention is simple, can effectively solve the problems of difficulty in cooking, poor taste and poor stability of the germinated brown rice, and promotes nutritional value of the germinated brown rice.

The pulse double-fluid water fog extinguishing gun is one fast and efficient fire extinguishing set belonging to the field of public safety emergency aid equipment. It includes a sprayer, a sprayer casing, a spraying pipe, an inner core, a gun body, a middle shaft, a sealing ring, a bearing, an air inlet pipe, an airflow switch, a rotary valve, a retaining block, a water inlet pipe, a water flow switch, a back seat, a connecting block, a fixing nut, a spring, a button switch, a retainer ring, an air inlet hole, a water inlet hole and a notch. The pulse double-fluid water fog extinguishing gun has great extinguishing impact force, high pulse effect, small water fog particle, low water flow loss, high fire controlling power and high extinguishing effect. It is suitable for extinguishing fire of solid, oil and electric equipment.