66 results about "Carbon dioxide" patented technology

The invention discloses a method for preparing an organic fertilizer by fermenting cow dung compost. According to the method, two times of composting fermentation are adopted and a composting promoter is added, so that the fermentation speed and the composting degree can be quickly increased; meanwhile, polyacrylamide, bentonite, cocoanut active charcoal and the like are added to reduce the moisture in cow dung and achieve the effect of deodorizing; sodium bicarbonate and triple superphosphate are added to generate carbon dioxide which can expand the cow dung, so that the permeability is increased; the early-stage fermentation temperature of the cow dung can be increased by the heat released from reaction, so that the activity of natural fermentation bacteria agents in the cow dung is improved; meanwhile, when the heat generated by the cow dung after a period time of composting is overhigh, the polyacrylamide absorbs the moisture in the cow dung to achieve the effect of reducing the temperature and to reduce turning times; after the fermentation is completed, the organic fertilizer prepared by drying and dewatering is high in fertilizer efficiency, durable and efficient, has the effects of retaining water, sterilizing and improving soil, and can promote the rapid growth of crops, thus improving the yield and the quality of the crops.

The invention relates to a carbon dioxide drive oil reservoir production method capable of realizing stage control on fluidity. The method is characterized in that for an oil reservoir formed by homogeneous cores and heterogeneous cores with the permeability ratio not exceeding 30, a water and gas alternate injection method is adopted for production; for an oil reservoir formed by heterogeneous cores with the permeability ratio in a range of 30 to 100, a carbon dioxide drive method is adopted for production; in the carbon dioxide drive process, when gas channeling occurs in a production well, small aliphatic amine molecules are used as main agents to be injected into the formation for sealing and plugging; for an oil reservoir formed by heterogeneous cores with the permeability ratio being higher than 100, the carbon dioxide drive method is adopted for production; in the carbon dioxide drive process, when the gas channeling occurs in the production well for the first time, elastic strong glue is injected into the formation for sealing and plugging; and when the gas channeling occurs in the production well again, the small aliphatic amine molecules are used as main agents to be injected into the formation for sealing and plugging.

The invention discloses an air conditioner and fresh air system predictive control method and system based on the indoor number of people. The control method comprises the following steps that a current indoor image and current indoor carbon dioxide concentration data are collected; according to the current indoor image and/or the current indoor carbon dioxide concentration data, the indoor numberof people is recognized; according to the current indoor carbon dioxide concentration data and the current indoor number of people, the temperature change amount and the carbon dioxide concentrationchange amount after the first preset duration are predicted; and the air conditioner and/or the fresh air system is adjusted according to the temperature change amount and the carbon dioxide concentration change amount. According to the control method, the indoor number of people can be accurately recognized according to the indoor image and/or the indoor carbon dioxide concentration data, and theair conditioner and/or the fresh air system can be accurately adjusted according to the indoor number of people, so that the accuracy of the number identification of people is effectively improved, then the accuracy of predictive control of the air conditioner and the fresh air system is improved, and the effects of being simple and easy to realize are achieved.

The invention discloses a method for producing astaxanthin by inducing Haematococcus pluvialis, which is characterized by comprising the following steps: in the vegetative growth phase, inoculating Haematococcus pluvialis in a nutrient culture medium, and culturing; continuously keeping irradiation on the Haematococcus pluvialis and ensuring that the intensity of illumination arriving at the Haematococcus pluvialis cell surface is 20-200 mu mol.m<-2>.s<-1>; in the induction stage, adding ethanol and seawater crystal into the production culture medium, wherein the ethanol added into the production culture medium accounts for 0.5-3 vol%, and the seawater crystal added into the production culture medium accounts for 0.5-1 wt%; and continuously introducing filtered air mixed with 1-3 vol% carbon dioxide into the production culture medium, wherein 0.2-0.4L/minute of the air is introduced to every 1L of production culture medium. The method can induce the Haematococcus pluvialis to quickly accumulate the astaxanthin, is simple and has the advantages of high yield and favorable effect.

The present invention provides a method for recovering a natural gas contaminated with high levels of carbon dioxide. A gas containing methane and carbon dioxide is extracted from a reservoir containing natural gas, where carbon dioxide comprises at least 50 vol. % of the extracted gas. The extracted gas is oxidized with an oxygen containing gas in the presence of a partial oxidation catalyst at a temperature of less than 600° C. to produce an oxidation product gas containing hydrogen, carbon monoxide, and carbon dioxide. The oxidation product gas is then utilized to produce a liquid hydrocarbon or a liquid hydrocarbon oxygenate.

The invention relates to a device for detecting methane or carbon dioxide through optical interference, which comprises an optical path system using the same optical source to generate two groups of optical interference stripes, an image sensor converting the physical position information of the two groups of stripes into electric signals, and an electric signal collecting and processing part used for identifying the physical positions of the two groups of stripes and finally determining the methane content in the air. The invention also comprises a method for detecting the concentration of methane and carbon dioxide with the advantage of automatic zero tracking and precision automatic compensation capacity. The device and the method have the characteristic of adopting two groups of stripes in the same optical path to realize the differencing of the optical images; then the whole system processes data in a differencing mode, which greatly improves the anti-interference capacity of equipments. The device and the method are based on the automatic compensation principle of instrument precision, solve the difficulties of severe precision unbalancing and severe zero point excursion of the traditional optical interference methane detecting instrument caused by the aberration of the optical system, can intelligently identify when the precision of the instrument is severely unbalanced, and can effectively calibrate.

The invention relates to a stand-alone renewable-energy generating device which generates electric energy from renewable energy sources, such as the sun or wind, in a stand-alone context, i.e. without being connected to a power grid. To allow users to asses their contribution to carbon dioxide emission savings, the invention provides a sensor element that is adapted to generate emission savings data representative of electric energy units generated by using a renewable energy device. Further, a clock device is comprised that is adapted to generate a time data representative of at least one of a time and a date specification and unique sensor-ID data are stored in a memory. A processor unit is adapted to time-stamp the emission savings data by combining it with the time data. The processor unit retrieves the sensor-ID data to combine them with the emission savings data to form savings profile data. A communication interface is adapted to communicate the savings profile data directly or indirectly via a network system. The sensor element may be provided integrated in a stand-alone renewable-energy generating device or in a separate emission savings sensor. The invention also relates to a method of maintaining user data associated with a savings profile data and sharing the savings profile data on the communications network. The sharing of these data aims to motivate further use of renewable energy devices.

The invention discloses a product surface double-color glaze and matte treatment method. Firstly, a layer of silver powder paint is sprayed to a product surface, and a layer of colored paint is sprayed to the surface of the silver powder paint; a layer of transparent colorless UV/PU paint is sprayed to the surface of the colored paint; a film layer with indium as a target material is plated on the surface of the UV/PU paint; a layer of transparent colorless UV/PU protective paint is sprayed on the surface of the film layer; part of the UV/PU protective paint and the film layer of a product are carved out through an optical fiber laser etching machine; the area formed after laser etching is deplated, and gasified matter formed after laser etching is removed; a layer of transparent colorless UV/PU intermediate paint and a layer of transparent colorless UV/PU surface paint are sprayed; the area subjected to laser etching and pervious to the colored paint is subjected to extinction treatment through a carbon dioxide laser etching machine. In the product surface double-color glaze and matte treatment method, the product can present a metallic look high in light reflection due to the film plating procedure. By means of laser etching, the film layer and the protective paint at some positions are carved out, the positions are pervious to the color of bottom paint, finally, the surface of the whole product is sprayed with the intermediate paint and the surface paint, the corresponding area pervious to the bottom paint after laser etching is subjected to extinction treatment, and the double-color glaze and matte integral effect is achieved on the product surface.

The invention discloses an automatic carbon dioxide fire extinguishing system and relates to a fire extinguishing system. The system comprises a plurality of independent unit systems, wherein each unit takes charge of a corresponding protective zone; carbon dioxide storage bottles are suspended on a fire extinguishing agent bottle group bracket; each carbon dioxide storage bottle is connected with a collecting pipe through a high-pressure hose; selector valves for combining distribution systems are arranged between the collecting pipe and a master pipeline; each selector valve corresponds to one protective zone; a fire extinguishing agent delivery pipe extends into a fire protection zone; a nozzle is arranged at the tail end; a fire detector is arranged inside each protective zone; a start steel cylinder is connected with each carbon dioxide storage bottle through a start pipeline. The system is efficient and reliable automatic fire extinguishing equipment, can automatically detect a fire, automatically alarm and automatically put out a fire, comprises three operation modes (full-automatic start, manual start and mechanical emergency start), adopts the carbon dioxide as the fire extinguishing agent, does not contaminate articles, is simple to clean after a fire disaster, good in insulativity, low in cost, convenient to install, reliable in performance, efficient and timely.

As previous processing of measurement in which gas to be measured containing, as gas components, carbon dioxide ¹³CO₂ and carbon dioxide ¹²CO₂, is introduced into a cell, and in which the intensities of transmitted lights having wavelengths suitable for measurement of the respective gas components, are measured and then data-processed to measure the concentrations of the gas components, the air having a predetermined volume Va is sucked by a gas injection device 21, a gas exhaust valve V6 of a cell 11 is closed and the air stored in the gas injection device 21 is transferred to the cell 11 filled with the air at an atmospheric pressure, thereby to pressurize the cell inside. The pressure thus pressurized is measured as P. The cell volume Vc is subtracted from the product obtained by multiplying the sum. V0 of the volume Va and Vc the cell volume Vc, by the ratio P0/P in which P0 is the target pressure of the gas to be measured at which a calibration curve has been prepared for an isotope gas analysis and measurement, thus determining the one-time gas injection amount of the gas injection device 21. Thus, measured concentration variations based on changes in atmospheric pressure can be corrected.

The invention belongs to the technical field of waste head and complementary energy recovery in iron and steel Industry, and in particular relates to a method for preparing methanol by sensible heat of blast furnace slag. The method comprises the following steps: blast furnace slag enters into a sensible heat recovery device; reactants enter into a grain slag packed bed to be preheated, and enter into a graining reactor when the temperature reaches 600 DEG C; the reactants enter into the graining reactor for reaction at 850 DEG C and at one barometric pressure to generate methanol. High temperature residual heat resources of liquid blast furnace slag are efficiently, economically and environment-friendlily used in an energy-saving manner. Treated blast furnace slag can meet the demand of cement manufacturing, and methanol produced belongs to a product widely applied with high additional value. Ternary reforming reaction of methane can realize part of self-heat supply, so that the energy efficiency in the reaction process is greatly enhanced, the cost is lowered, and carbon deposited on the surface of the catalyst can be alleviated or even eliminated. Coke oven gas resource is adequately utilized, the energy resource is saved, carbon dioxide in flue gas is utilized, and emission of greenhouse gases is reduced, so that the method is energy-saving and environment-friendly.

The invention discloses a microbial dust suppressant and its application. The microbial dust suppressant consists of 2.0wt%-3.0wt% of microbial powder, 29.0wt%-30.0wt% of calcium source and 67.0wt%-69.0wt% of ionized water Composition, described microorganism is bacillus lysinus, and described calcium source is calcium chloride. The microbial dust suppressant is evenly sprayed on the sandy soil surface under the condition of the ambient temperature of 2°C≤T≤20°C, uses microorganisms to capture carbon dioxide in the environment and converts it into carbonate, and reacts with an external calcium source to form a gelling effect The carbonate minerals have successfully consolidated loose sand particles into a whole and have certain mechanical properties. Compared with traditional methods, this method has significant dust suppression effect, low cost, convenient construction, no secondary pollution, and good ecological compatibility.

The present invention relates to a system and a method for saving marine fuel by optimizing energy efficiency for optimally sailing a ship, and a recording medium for recording a computer program for implementing the method. The method comprises the steps of: (a) collecting reference ship specifications, (b) collecting reference sailing data, (c) generating a module for calculating optimum RPM, (d) calculating the optimum RPM by inputting the current schedule condition and the sailing condition, and (e) applying the optimum RPM to the engine of the ship. According to the present invention, all internal and external energy consumption of the ship is intensively analyzed to save the fuel oil which is the main energy source of the ship. Further, by integrating a navigational device having an engine controller for optimizing energy efficiency for each sailing condition, the optimum sailing condition can be calculated. Using this technology, the engine can be automatically controlled without a human operator, cost can be reduced, and the operating expenses of a shipping company can be reduced due to the energy savings. Further, by saving labor expenses, the economic feasibility and efficiency of marine transportation can be improved. Moreover, by saving fuel oil, certified emissions reduction credit can be secured, and contributions to preventing global warming can be made.

The invention discloses a method for digesting spent rhodium catalyst in carbonyl group synthetic reaction, which is characterized by adding concentrated sulfuric acid into the spent rhodium catalyst in carbonyl group synthetic reaction for carbonization; and then adding alkali metal nitrate solid for digestion until solution of a system is clear and transparent; at this moment, organic matters are digested and removed in a format of carbon dioxide, and rhodium exists in acidic solution in a format of soluble salt. The method disclosed by the invention is high in recovery rate of rhodium, environment-friendly, moderate in operating condition, and high in efficiency.

The invention discloses an in-situ preparation method of carbon nano-sheet-coated nano-silicon composite material, and belongs to the technical field of nano material preparation. The method comprisesthe steps of: mixing magnesium powder, nano-silicon dioxide and inorganic salt according to a predetermined ratio, and then pressing the mixture into a sheet shape by a dry pressing forming process,then calcining the sheet material in a tube furnace with high temperature under a carbon dioxide atmosphere, carrying out a primary pickling and a secondary pickling respectively in a hydrochloric acid solution and a hydrofluoric acid solution after the calcination is completed, centrifugally washing the product to be neutral, and finally carrying out a vacuum drying to obtain a carbon nano-sheet-coated nano-silicon composite material. The in-situ preparation method provided by the invention is simple in operation and mild in conditions, and the preparation of the carbon nano-sheet-coated nano-silicon composite material is realized by a simple device at a relatively low temperature, which is safe and environmentally friendly, thereby effectively reducing the preparation cost of the carbon-modified nano-silicon composite material.

The invention discloses a preparation method of a positive electrode catalyst Mn2O3 of a lithium carbon dioxide battery. The method comprises the following steps of dissolving PVP into absolute ethylalcohol and then adding Mn(CH3COO)2.4H2O; carrying out magnetic stirring and reflux reaction at 40-80 DEG C to obtain a white precipitation product and carrying out vacuum drying to obtain a powdery precursor; and carrying out heat preservation in a tube furnace at 500-700 DEG C for 2-4h to obtain the positive electrode catalyst Mn2O3 of the lithium carbon dioxide battery. The positive electrode catalyst Mn2O3 of the lithium carbon dioxide battery is used for preparing a positive electrode of the lithium carbon dioxide battery. The materials are easy to obtain, and the method is simple in preparation process and technology, low in cost and friendly to environment.

The invention belongs to the field of bioenvironment material degradation property research, which comprises: separating from the environment and getting the degraded bacterium of every degradation materials, sorting and attesting and forming the mixing bacterium group, designing the device to measure the discharge of the carbon dioxide in the degradation process. Said invention measuring the degradation ability according to the principle of the mixing bacterium group can measure the carbon dioxide transformed from organic carbon in the high polymer, and because using the mixing bacterium group, the result has a good repeatability and can be used widely.

An integrated apparatus for separating a mixture of carbon dioxide and at least one other gas and for separating air by air distillation is provided. The apparatus includes a CO₂ separation unit configured to separate the mixture, an air separation unit configured to separate air by cryogenic distillation, a water cooling tower that operates by direct contact, a line for sending water to the top of the tower, a line for sending at least one portion of the nitrogen-enriched gas stream to a lower level of the tower, a cooled water line for withdrawing cooled water from the tower and means for cooling the air upstream of the air separation unit, the cooled water line being connected to means for cooling the air upstream of the air separation unit and to the inlet and/or to the outlet of the unit for separating the gaseous mixture.

The invention discloses a method for culturing oleaginous microalgae. The method comprises the steps of: inoculating the oleaginous microalgae at a logarithmic growth period into a culture medium containing an organic carbon source, culturing under the alternative circulation environment of irradiation and no irradiation, and culturing until at a platform period. According to the method, cultivation is performed under the alternative circulation environment of irradiation and no irradiation, so that the important role for fixing carbon dioxide is also taken into account while the biomass and lipid yield is guaranteed, and the period of microalga cultivation is greatly shortened.

The invention provides an inhibitor-combined natural gas hydrate replacement mining method, and belongs to the technical field of marine natural gas hydrate mining. Firstly, a plurality of mining wells are drilled in a mining area to the interior of a natural gas hydrate mineral deposit, and each mining well comprises a vertical well section and a horizontal well section; during exploitation, an inhibitor is injected into a reservoir through an injection well, a pore channel is opened, the stratum permeability is improved, and then carbon dioxide is injected for replacement exploitation. Diffusion of the inhibitor and carbon dioxide between two mining wells is facilitated by controlling the pressure difference between the injection well and a collection well. In a replacement mining process, the inhibitor can prolong the generation time of carbon dioxide hydrate injected into the periphery of a shaft, so that the carbon dioxide diffusion distance is increased, the contact area of replacement reaction is increased, and the mining depth and efficiency are improved. The method is easy to implement, the replacement depth and speed can be greatly increased, and the method can be used for large-scale exploitation of natural gas hydrates.

The invention relates to a method for producing green purified rice. According to the method provided by the invention, the pressure is controlled below 30Mpa and the time is controlled over 30 minutes, and a dynamic extraction technology of carbon dioxide supercritical fluid is utilized. The carbon dioxide supercritical fluid is adopted as an extracting agent, and has strong solubleness on pesticide residues, and the overall dissolution process is a dynamic extraction process, so that the extraction validity and safety can be ensured. The pesticide residues are removed together with entrainer fat or water in the extraction process, so that the fat or moisture of the rice is removed when harmful pesticide residues are removed, eggs and bacteria can be killed in the extraction process, and the guarantee period and the mouthfeel of the rice are improved. By adopting the method for purifying the rice, which is provided by the invention, the cost in the production process is reduced, industrialization of rice purification is facilitated, no pollution to the environment in the overall production process is generated by a supercritical cycle change of carbon dioxide, and secondary pollution to the rice is not generated.

The present invention relates to a package made from biodegradable polymeric flexible film for packaging fresh produce. The package includes at least a pair of opposite panels configured to form a receptacle. The package comprises plurality of apertures which are configured to provide a modified atmosphere packaging (MAP) for the fresh produce. The said film of package in conjunction with MAP facilitates humidity exchange through the polymeric structure of the film and controlled exchange of oxygen, carbon dioxide and other gases suitable for fresh produce, inside the package.

Olanzapine Form I crystals can be made by precipitation from a gas/supercritical fluid composition containing carbon dioxide.

The invention provides a construction process for a gas producing system in an oil well layer, and relates to the technical field of oil well single-well production increase. The construction process comprises the following steps that: firstly, anti-gas channeling agents are used for sealing and blocking the high-permeability formation; the construction effect reduction due to the onrush of gas producing agents injected in the later period can be prevented; two kinds of gas producing agents capable of producing CO2 through reaction are used and are sequentially injected into the formation, so that a great amount of generated CO2 is mixed with crude oil in the formation; the formation energy is increased; the organic blockage and the inorganic blockage of a near-well zone are relieved; the oil-water fluidity ratio is improved; and the permeability of the near-well zone is improved, so that the goal of improving the single-well productivity is achieved. The construction process can better solve the problems of corrosion and scale formation on oil well equipment, pollution on a gas source, storage and transportation and environment and the like during the CO2 throughput process can be well solved; and the advantages of simple construction, low cost, safety, environment protection and the like are realized.

The invention discloses a portable tick trapping device. The portable tick trapping device comprises a top cover (2), an inducing device and a capturing device and is characterized in that the capturing device comprises a base (4) and a side plate (3), a barrel-shaped body with an opening in the upper portion is formed by the side plate (3) and the base (4), tick adhering glue (11) is arranged on the inner surface of the base (4) and/or the inner surface of the side plate (3), cracks (12) are formed in the side plate (3), and the top cover (2) and the side plate (3) are hinged through a support (13); the inducing device comprises an inducing core (10) and a carbon-dioxide generator (6), a constant temperature heating piece (5) is arranged on the base, the inducing core is arranged on the base (4) in the mode that an opening of the inducing core faces downward, multiple vent holes (8) are formed in the surface of the inducing core (10), and an animal hair filling cavity (9) is formed in the opening of the inducing core (10). Compared with the prior art, the portable tick trapping device has the advantages that materials are cheap and wide in source, and the trapping device is convenient to carry, easy to operate and high in tick capturing efficiency.

Each ton of fruit and tea mixed drink is prepared from 30-35 parts of white granulated sugar, 30-35 kilograms of fructose syrup, 0.1-0.2 kilogram of aspartame, 0.1-0.2 kilogram of acesulfame, 0.3-0.4 kilogram of sodium citrate, 1.3-1.8 kilograms of citric acid, 0.3-0.6 kilogram of malic acid, 0.2-0.3 kilogram of edible well salt, 0.3-0.5 kilogram of potassium sorbate, 0.3-0.5 kilogram of black tea powder, 3-8 kilograms of condensed fruit juice and the balance water. The invention further discloses a manufacturing method of the fruit and tea mixed drink. The white granulated sugar and the fruit juice are added to improve the taste of the fruit and tea mixed drink, free carbon dioxide gas is generated by the well salt and carbonate therein, the influence of metal ions of the well salt on the hardness of the drink is decreased, and iron ions in the fruit juice are adjusted and can be more effectively absorbed.