115results about How to "Increase carbon dioxide concentration" patented technology

A molten carbonate fuel cell, operating method of the fuel cell, sintering furnace equipped with the fuel cell, and power generator, wherein a cathode gas with a high carbon dioxide concentration can be obtained without a process of increasing the carbon dioxide concentration, and the heat of furnace exhaust gas can be effectively reclaimed and the fuel consumption can be reduced. The cathode gas is a gas containing a furnace exhaust gas discharged from an industrial furnace for heating materials, a mixed gas of the furnace exhaust gas and a gas for cathode use or a preheated gas for cathode use, which is a gas for cathode use preheated using the furnace exhaust gas as a heating source, or the preheated gas for cathode use, and the carbon dioxide concentration of the cathode gas is 0.1-50 vol %.

The present method transfers carbon dioxide in increased concentrations using perfluorodecalin for growth of algae in a photobioreactor. First, a perfluorodecalin solution is provided and mixed with a biological growth medium and a surfactant. The biological growth medium, perfluorodecalin solution, and surfactant mixture are then emulsified by circulation in a high-pressure emulsifier. The emulsified biological growth medium, perfluorodecalin solution, and surfactant mixture are then added to a photobioreactor containing algae capable of photosynthetically utilizing carbon dioxide. After adding carbon dioxide to the photobioreactor, the carbon dioxide dissolves in the perfluorodecalin solution at a higher concentration than in the growth medium. Conditions sufficient for the algae to perform photosynthesis using carbon dioxide from the perfluorodecalin solution are maintained thereby increasing the growth rate of the algae in increased concentration of carbon dioxide due to the increased solubility of carbon dioxide in the perfluorodecalin solution.

A device and a process for controlling a respirator with inclusion of an oxygen saturation value (34) for compensating a device-dependent time response (15), a physiological time response (16) and a measuring method-dependent time response (17) are described. The device-dependent time response (15), the physiological time response (16) and the measuring method-dependent time response (17) are determined in a continuous sequence and a run time of a change in the oxygen concentration from the metering means (9) in the respirator to the patient (4) is determined and taken into account in regulating the oxygen concentration.

An increasing level of carbon dioxide gas in the earth's atmosphere has been determined and is generally accepted by the scientific community. The human contribution to increases in the percentage of carbon dioxide in the atmosphere has been identified as a driving force of global climate change.

The impact of global climate change might be mitigated by means to reduce or stabilize the percentage of carbon dioxide in the atmosphere.

The invention provides a means for cleaning the atmosphere of carbon dioxide molecules by dissociation and refining the by-products into valuable fuels and other substances. It is taught that solar energy can be used to energize a photonic crystal producing the power and specific frequency required for localized excitation of CO2 molecules in a specific vibration mode and to the majority exclusion molecular structures comprising atmospheric gases sufficient to break covalent bonds of CO2, thereby producing reactant by-product that can be collected and refined into valuable substances and fuel.

A system and method of reducing the net carbon dioxide footprint of an industrial process that generates power from the combustion of hydrocarbon fuels in which ambient air is admixed with up to 50% by volume of an effluent gas from the power generator of the industrial process, in order to substantially increase the CO₂ concentration in the air prior to treatment. The treatment comprises adsorbing CO₂ from the admixed ambient air utilizing a cooled, porous substrate-supported amine adsorbent, wherein the porous substrate initially contacts the mixed ambient air containing condensed water in its pores, which act as an intrinsic coolant with respect to the exothermic heat generated by the adsorption process. In addition, prior to regenerating the supported adsorbent, air pressure is substantially reduced in the sealed regeneration chamber and the low pressure chamber is placed in fluid connection with a higher pressure regeneration chamber containing steam and carbon dioxide, to preheat the sorbent to be regenerated and to quickly cool the regenerated sorbent prior to use for further CO₂ adsorption.

A method for manufacturing an optical fiber in which a flow of a cooling gas within a cooling device is made to be an upward flow and the cooling gas is discharged to outside from an upper end of the cooling device by connecting the cooling device and a coating device in an airtight manner, and closing a flow of the cooling gas which flows toward a coating device within the cooling device using a meniscus of resin within the coating device. A temperature of the cooling gas is increased toward an upper portion of the cooling device from a lower portion of the cooling device by adjusting the flow rate of the cooling gas.

System for modifying the chemical composition of atmosphere within an enclosed space and incubator system including such a system. The concentration of oxygen within the enclosed space may be either increased or decreased using an electrochemical device. The concentration of carbon dioxide within the enclosed space may be increased using an electrochemical or chemical device. As necessary, purging of the system with ambient air can be a part of the process of controlling the chemical composition of the atmosphere. The present invention obviates the need to use pressurized gas cylinders to supply atmospheric gases to the enclosed space.

A method of forming a polyethercarbonate polyol enhances incorporation of CO₂ into the polyethercarbonate polyol. The method provides a catalyst including a multimetal cyanide compound. An H-functional initiator, an alkylene oxide, and CO₂ are reacted in the presence of the multimetal cyanide compound in a reactor. The method further provides a CO₂-philic compound or a CO₂-philic substituent. The CO₂-philic compound and substituent enhance incorporation of the CO₂ into the polyethercarbonate polyol and reduce formation of cyclic alkylene carbonates, such as cyclic propylene carbonate, which are undesirable byproducts.

The invention relates to a negative electrode for electroreduction of carbon dioxide and a preparation method thereof. The negative electrode is such structured that carbon paper, carbon felt or carbon cloth is used as a substrate; one side surface of the substrate is successively bonded with two catalysis layers of different pore sizes; and the negative electrode is successively composed of the substrate, a large-size heteroatom-doped nanocarbon layer and a small-size metal-and-heteroatom-doped nanocarbon layer. The large-size catalysis layer is favorable for transmission of CO2 and productsand reduction of mass transfer resistance; and the small-size heteroatom-doped nanocarbon layer is beneficial for improving the reaction active specific surface area of a catalyst and enhancing the reaction activity of the catalyst. As the negative electrode with such a structure is applied to ERC, the area of a three-phase electrochemical reaction interface is greatly broadened, the utilization rate of the catalyst is increased, and mass transfer polarization of an electrolytic bath is reduced; and in virtue of adsorptivity or formation of chemical bonds between the negative electrode and products of electroreduction of carbon dioxide, the selectivity and conversion rate of an assigned reduction product can be improved, and high selectivity of the reduction product is realized.

The invention relates to the technical field of needle mushroom cultivation, in particular to a cultivation method of bottle planted needle mushroom. The cultivation method includes three steps, namely budding, restraining and growing. In budding, a control and regulation system with temperature, illumination and carbon dioxide concentration as the features and ventilation quantity as the whole selects appropriate parameter values to regulate and control needle mushroom hyphae. In restraining, wind restraining, light restraining and temperature restraining are organically combined to control growing height, stipe toughness and pileus size of sporocarps. In growing, carbon dioxide concentration is improved, and the needle mushroom with uniform and moderate pilei and vertical stipes can be obtained. The cultivation method reasonably uses illumination, temperature, humidity and carbon dioxide concentration to meet growth requirements of the needle mushroom at different stages by combining the growth characteristics of the needle mushroom, proportionally controls the whole production process, stabilizes product quality, enables the cultivated needle mushroom to be good in quality, stable in quality and consistent in growing, and enables the pilei of the needle mushroom to be uniform and moderate.

The invention belongs to the technical field of plant nutrient liquid and particularly discloses nutrient liquid capable of improving resistance of cucumbers as well as a preparation method and application thereof. The nutrient liquid comprises gamma-aminobutyric acid, potassium nitrate, calcium nitrate tetrahydrate, monopotassium phosphate, magnesium sulfate heptahydrate, trace elements and the like, and comprises macroelements such as N, P, K, Ca, Mg and S. When the nutrient liquid is applied to the fruiting period of the cucumbers, the picking period of the cucumbers can be significantly prolonged, the malformation rate can be reduced, the fruit yield of single plant of cucumber can be increased, and the content of vitamin C, soluble protein and free amino acid of the cucumbers can be significantly increased; in addition, when the nutrient liquid is applied to the fruiting period of the cucumbers, the nitrate content of the cucumbers can be reduced, the net photosynthetic rate of the cucumbers is increased, intercellular carbon dioxide concentration and the stomatal conductance are increased, element deficiency symptoms in the middle and later fruiting period of the cucumbers are avoided, and the high-temperature resistance and the extreme environment resistance of the cucumbers are significantly enhanced.

A process is presented whereby hot Carbon Monoxide (CO) gas is generated under pressure in an external Combustor by the partial oxidation of a carbon-based solid fuel. This pressurized, hot CO gas or CO gas mixture is then transferred to a desulfurizing vessel containing a second carbon-based solid fuel. The hot CO laden gas and solid material contact in a counter-flow arrangement where the CO reacts with and removes sulfur impurities from the second carbon fuel. The temperature of the pressurized CO laden gas from the Combustor is controlled by varying the oxidizer feed gas composition. The Combustor also contains a means for desulfurizing its feed fuel by flowing a portion of the hot CO gas generated up through the inlet solid fuel feed line. The desulfurizer vessel is comprised of three stages, a preheat stage, a desulfurizing stage, and a cooling stage. Hot CO gas from the Combustor enters the desulfurizer section where it mixes with a recycle gas stream coming up from the cooling stage below. The gas exiting the desulfurizer section is split into an exhaust stream and a recycle stream. The recycle stream travels up through the preheat section and heats the incoming material being treated. The cooled recycle gas exits the top of the system and flows to a recycle blower. The recycle gas is scrubbed of impurities by activated carbon prior to being re-injected into the bottom of the cooling section. The hot exhaust stream from the desulfurizer section is first quenched by mixing with a small water spray and a second exhaust gas recycle stream. The cooled exhaust gases are passed over a catalyst that converts carbonyl sulfide (COS) and carbon disulfide (CS2) gases to hydrogen sulfide (H2S), which are then removed from the system by conventional processes. The Combustor/Desulfurizer process is useful or producing high-value low-sulfur petroleum coke by generating the required heat from a low-value coke, such as fluid coke. In an alternate embodiment, the combustor is used to calcine and desulfurize coal or other solid carbon fuel in a batch process. The Combustor can also be used independently to supply hot reducing gas for any application.

The invention provides an organic planting method for asparagus, and belongs to the field of planting. The method comprises the steps of nutrient soil preparation, seed soaking and pregermination, seedling cultivation and planting; nutrient soil preparation comprises the steps that soil and animal feces are mixed together, and compound fertilizer for plant growth is added, wherein the animal feces is poultry feces; a microbial fertilizer starter is put into the mixture in the final process of nutrient soil preparation; for seed soaking and pregermination, seeds are put into clear water to be soaked for 4 hours, and the seeds are taken out and put into pregermination mixed liquor to be soaked. Accordingly, the animal feces is poultry feces which is convenient to take, the organic nutrient content is high, the prepared soil is rich in nutrient, and sowing is conducted conveniently; gibberellin has the effects of promoting seed germination and growth of vegetable organs, and the survival rate of sowed seeds is increased conveniently; the temperature of the microbial fertilizer starter in the fermentation process rises continuously to reach 60 DEG C, and miscellaneous bacteria and eggs in the soil are killed; the quality of the asparagus is improved through cytokinin, and the yield increasing effect is achieved.

Methods and systems of enhanced carbon dioxide recovery from an inlet gas stream are provided, by introducing the gas stream to one or more membrane-based separation units to produce a permeate byproduct gas stream having increased concentration of carbon dioxide compared to the inlet gas stream and then introducing the permeate byproduct gas stream to one or more pressure swing adsorption units or trains to enhance recovery of hydrocarbons, such as methane, lost in the byproduct stream and to produce a substantially pure carbon dioxide stream, while minimizing process compression and eliminating process heat for process regeneration. The methods introduced herein are for enhancing product recovery by enhancing carbon dioxide recovery from gas streams with pressures greater than atmospheric conditions. Further refinement to the methods would be the introduction of hydrogen sulfide polishing units within the process to produce product that meets or exceeds sales quality specifications.

The invention relates to a leaf vegetable fresh-keeping storage and transportation box with a self-adjusting inner environment and a using method of the storage and transportation box. The storage andtransportation box is composed of a box body, moisture-absorbing and water-supplementing vegetable containing bags, CO2 temperature regulators, supporting partition plates, water accumulation tanks and fixing buffering pull ropes; the box body is composed of a main box body and a box cover, wherein the main box body and the box cover are fixed and sealed through sealing adhesive tapes; the moisture-absorbing and water-supplementing containing bags are composed of water-absorbing materials so that water vapor in the box body can be absorbed to supplement lost moisture of leaf vegetables; the CO2 temperature regulators are composed of ice blocks and dry ice which are placed at the bottom of the box body, the total weight of ice bags is not smaller than half of the total weight of the vegetables, and the total weight of the dry ice is 0.05%-0.1% of the total weight of the vegetables; and the supporting partition plates and the fixing buffering pull ropes are connected with the upper partof the moisture-absorbing and water-supplementing vegetable containing bags so that vegetable bodies in the vegetable containing bags can be adjusted to be in an upright state. The storage box is exquisite in design, convenient to transport and capable of effectively delaying leaf vegetable aging, the fresh state of the leaf vegetables is kept, and the shelf life is prolonged.

The invention discloses a carbon dioxide erosion testing device and a simulation method and relates to the field of carbon dioxide erosion testing simulation. The carbon dioxide erosion testing devicecomprises a carbon dioxide storage device, a reaction container, a pressure control component and a water amount control device, wherein the carbon dioxide storage device is used for containing carbon dioxide; the reaction container is used for containing a testing sample; the pressure control component is used for controlling the pressure of the carbon dioxide in the reaction container; the water amount control device is used for controlling the water amount inside the reaction container. The carbon dioxide erosion testing simulation method which comprises the following steps: putting a testing sample into the reaction container; vacuuming the reaction container; increasing the amount of water inside the reaction container; increasing the concentration of the carbon dioxide inside the reaction container. By adopting the carbon dioxide erosion testing device and the simulation method disclosed by the invention, carbon dioxide erosion action of a carbon dioxide erosion function to concrete structures on the ground, and carbon dioxide erosion action of carbon dioxide dissolved in water to concrete structures soaked in water, are effectively simulated.

The invention relates to a preparation method of a photosynthetic accelerant. The preparation method comprises the following steps: preparing an amino acid raw solution; preparing a seaweed oligosaccharide polypeptide solution by utilizing seaweeds; mixing the amino acid raw solution and the seaweed oligosaccharide polypeptide solution to obtain a mixed solution; carrying out chelating reaction ina reaction kettle for 1 to 3h to obtain the photosynthetic accelerant. By adopting the photosynthetic accelerant, the photosynthetic efficiency of plants can be further improved, so that the plants are accelerated to grow at a more rapid speed, and environments in which pathogenic bacteria and injurious insects reproduce and live are reduced.

The present invention relates to a graphite electrode and manufacturing process thereof, and a carbon dioxide generator, wherein the graphite electrode comprises the following in weight percentage: graphite powder 50%-90%; adhesive 10%-40%; first additive 1%-30%; second additive 0.1%-10%; wherein the adhesive comprises at least one of phenolic resin, bisphenol A epoxy resin and urea formaldehyde resin; the first additive is selected from at least one of the following: polylactic acid, carbonate, monosaccharide, oligosaccharide and polymethacrylates; the second additive is selected from at least one of the following: carbon black, carbon nanotubes, silicon carbide, boron nitride, silicon oxide, aluminium oxide, zinc oxide, iron oxide, titanium dioxide, calcium carbonate, stearic acid, zinc stearate and calcium stearate. The carbon dioxide concentration of the gas obtained by the electrolysis of the present invention reaches 10 v % or more, and the gas produced is stable in quantity.