92results about How to "Reduce carbon dioxide concentration" patented technology

A photoelectrochemical cell (1) includes an electrolyte container (3) containing an ionic liquid (2), and a partitioning membrane (4) dividing an interior of the electrolyte container (3) into two being a CO₂ capturing chamber (7) and a CO₂ releasing chamber (8), having side walls opposing each other, with the partitioning membrane (4) in between, either as a carbon electrode (5) and the other as a photoelectrode (6). A redox mediator (B) has different bonding forces to carbon dioxide, as it appears as an oxidant B_ox and a reductant B_red, of which that one which has a greater bonding force serves as an intermediary chemical species carrying carbon dioxide to one of the paired electrodes (5, 6). Over the CO₂ releasing chamber (10), an upper wall portion (10) is formed, which has a CO₂ take-out port (10A) formed therein, for making use of oxidation and reduction of the redox mediator to achieve separation and concentration of carbon dioxide, converting photo energy of sunlight into electric power.

A methanol reforming catalyst that generates a reformed gas containing hydrogen by reforming methanol under the presence of oxygen and steam, comprises a catalytic component I containing Cu oxide and Zn oxide, and a catalytic component II containing metal oxide and one of Pt and Pd Also, another methanol reforming catalyst comprises a catalytic component I containing Cu oxide and Zn oxide, a catalytic component IIA containing first metal oxide and a noble metal, and a catalytic component IIB containing second metal oxide and one of Pt and Pd. The second metal oxide forms an alloy more easily than the first metal oxide. The auto-thermal reforming process can be stably accelerated in the methanol reforming reaction using these catalysts. Also, there are provided a reformer, a reforming apparatus, and a tuel cell system employing these methanol catalysts Since a heater Or a reducing apparatus can be omitted in these apparatuses, etc., sizes of these apparatuses, etc. become small and thus these apparatuses, etc. are suitable for the installing into the mobile body.

An NGL recovery plant includes a demethanizer (7) in which internally generated and subcooled lean oil absorbs CO₂ and C₂ from a gas stream (11), thereby preventing build-up and freezing problems associated with CO₂, especially where the feed gas has a CO₂ treatment at ethane recoveries above 90% and propane recoveries of at least 99%.

Disclosed are packaging systems and methods useful in extending the storage-life of foodstuff such as fresh fish. The packaging systems and methods can be used to transport or store the foodstuff for an extended period of time. The packaging systems preferably use a fuel cell to maintain a reduced oxygen level in the environment surrounding the foodstuff.

The present invention provides a method and apparatus for sequestering carbon from atmospheric air using a hydroxide compound in a two stage process to maximize carbon dioxide capture. The first stage is provided by a coarse filter saturated with a calcium hydroxide solution. The second stage is provided by a reaction chamber having at least one spray nozzle for creating a mist of hydroxide solution within the reaction chamber. Air is drawn through the device by a fan to cause the air to first contact the hydroxide solution on the saturated filter, and then to contact the hydroxide solution in the mist sprayed within the reaction chamber. The hydroxide solution is collected in a reservoir, centrifuged to separate the captured carbon from the solution, and then recirculated back into the saturated filter and through the spray nozzles into the reaction chamber.

In a method for increasing the throughput of packages of waste material of a high caloric value of rotary kiln plants which include a rotary tube with a combustion chamber and a post combustion chamber to which the combustion gases from the rotary tube are supplied and which includes at least one burner supplied by gas from a gas supply, the waste packages are supplied to the rotary tube and burned therein with oxygen containing gas and the combustion gas flows to the post combustion chamber for post combustion, the combustion process being continuously monitored in the kiln and the post combustion chamber and controlled by adjustment of the combustion conditions in the kiln and the post combustion chamber.

Disclosed are packaging systems and methods useful in extending the storage-life of foodstuff such as fresh fish. The packaging systems and methods can be used to transport or store the foodstuff for an extended period of time. The packaging systems preferably employee a high headspace and flexible architecture and may use a fuel cell to maintain a reduced oxygen level in a high carbon dioxide environment surrounding the foodstuff. Also disclosed are methods useful in extending the storage-life of foodstuff such as fresh fish. The methods can be used to transport or store the foodstuff for an extended period of time. The methods preferably use a low oxygen gas source to maintain a reduced oxygen level in the environment surrounding the foodstuff.

In a burning air feeding device (9) of alternating heat-exchanging type, the feed of burning air and the discharge of a burned exhaust gas are performed at the speeds of 80 to 200 m/sec. A burner structure (4) is constituted such that a low-calorie fuel gas is preheated with the heat of a precombustion high-calorie fuel gas till the low-calorie fuel gas reaches a mixing starting zone (CA), and such that the precombustion high-calorie fuel gas and the low-calorie fuel gas are burned together in the mixing starting zone (CA). The sum (Q1+Q2) of an air quantity (Q1) fed from the hot air feeding ports of a plurality of fuel gas burning devices and an air quantity (Q2) of a precombustion air to be mixed with the high-calorie fuel gas in the plural fuel gas burning devices is set to 1.02 to 1.10 times as high as the stoichiometric air quantity (Qs) necessary for the combustion, and the ratio (Q2/(Q1+Q2)) is set within the range of 0.011 to 0.047.

A process and apparatus are presented for the removal of carbon monoxide from ethylene streams. The removal of carbon monoxide before selective hydrogenation protects the catalyst in the selective hydrogenation reactor. Carbon monoxide levels are controlled with the water gas shift process to convert the carbon monoxide to carbon dioxide, with the carbon dioxide removed in an acid gas removal process.

The invention discloses a low-energy-consumption multi-area refined variable-air-volume air conditioning system and a control method thereof. The system comprises a first air supply duct, a second airsupply duct, a return air duct and a plurality of areas, wherein the first air supply duct is connected with one ends of the plurality of areas through a first air supply branch pipe, the second airsupply duct is connected with one ends of the plurality of areas through a second air supply branch pipe, and the other ends of the plurality of areas are connected with the return air duct, one end,far away from the plurality of areas, of the first air supply duct is sequentially provided with an independent ventilation unit, a first surface cooler, a first filter and a first ventilation valve,the first surface cooler is connected with a first electric valve, the first electric valve is connected with one end, far away from the independent ventilation unit, of the first air supply duct through a first controller, the independent ventilation unit is connected with a first frequency converter, and the first frequency converter is connected with one end, far away from the independent ventilation unit, of the first air supply duct through a second controller. The low-energy-consumption multi-area refined variable-air-volume air conditioning system and the control method thereof have theadvantages of being accurate in control, convenient to use and good in effect.

Systems and methods of reducing carbon dioxide emissions in a fluid catalytic cracking unit having a reactor and a regenerator at gasification conditions are disclosed. In one example, a method comprises compressing a first gas at an inlet pressure to a predetermined high pressure to define a compressed gas and combusting a second gas with the compressed gas to a predetermined temperature to define a heated gas. The method further comprises expanding the heated gas to a predetermined low pressure to define a feed gas. The method further comprises introducing the feed gas to the regenerator. The feed gas, now at an elevated temperature, provides heat to the regenerator to burn coke off spent catalyst from the reactor, achieving a proportion of carbon monoxide in a flue gas. In turn, this reduces the concentration of carbon dioxide in the flue gas.

The invention discloses an air purifying device with a hollow fiber membrane. The air purifying device comprises a shell, wherein a first filter cavity, a draught fan cavity and a second filter cavity are formed in the shell; an air inlet which is used for communicating the first filter cavity with external air is formed in the shell; the first filter cavity is internally provided with a hollow fiber membrane filter assembly which is used for filtering air entering the first filter cavity from the air inlet; the draught fan cavity is internally provided with a draught fan which is used for sucking the air filtered by the hollow fiber membrane filter assembly in the draught fan cavity; an air inlet of the draught fan is connected with an air generation opening of an end cover, and an air outlet is located in the draught fan cavity; a communicating opening which is used for enabling the air in the draught fan cavity to enter the second filter cavity is formed between the draught fan cavity and the second filter cavity; the second filter cavity is internally provided with an activated carbon filter assembly which is used for filtering the air entering the second filter cavity. According to the air purifying device with the hollow fiber membrane, disclosed by the invention, clean oxygen-containing fresh air can be supplied to a room, and the room is kept in low carbon dioxide concentration, so that people in a relatively-closed environment can feel fresh and natural indoor air.

A CO removal catalyst of inducing CO shift reaction for allowing water and carbon monoxide to react to produce hydrogen and carbon dioxide, comprising a catalyst carrier having a cerium-zirconium composite oxide and a zirconium oxide and a predetermined noble metal supported on the catalyst carrier, wherein the average particle diameter of the particulate cerium-zirconium composite oxide is greater than the average particle diameter of the particulate zirconium oxide, the average particle diameter of the particulate zirconium oxide is greater than the average particle diameter of the predetermined particulate noble metal and the predetermined noble metal is supported on the catalyst carrier more in the outer part thereof.

The invention provides an air conditioning device for reducing concentration of carbon dioxide in a confined space. The air conditioning device comprises an air conditioning device body, wherein the air conditioning device body comprises an air supply channel, and the air conditioning device body is provided with a ventilation device which is in the air supply channel; the ventilation device comprises a functional layer, and the functional layer has the function of reducing humidity and generating oxygen; and the functional layer comprises a peroxide metal. The ventilation device is provided with the functional layer with the function of reducing the concentration of the carbon dioxide and generating the oxygen, and the air conditioning device can be used for improving the quality of air introduced in the air supply channel. The peroxide metal in the functional layer is in a powdered shape or fine granular shape so as to be coated on the surface of the functional layer conveniently.

The invention provides a cold-resistant regulator. Active ingredients of the cold-resistant regulator comprise magnesium sulfate, calcium chloride, chitosan, sodium dimethyl dithiocarbamate, abscisic acid, basil extracting solution and palm oil. All the components of the cold-resistant regulator have a synergistic effect, and the cold-resistant regulator has the functions of improving the photosynthetic efficiency of plants, improving the structural stability of cell membranes, maintaining the fresh weight of the plants and the like; under the effect of low-temperature stress, decrease of chlorophyll content, net photosynthetic rate, intercellular carbon dioxide concentration and the like of rubber tree leaves can be effectively slowed down, and increase of relative conductivity of phloem, malondialdehyde content and the like can be remarkably slowed down; the content of phloem soluble sugar, the maximum photochemical efficiency of leaf PSII, the actual photochemical efficiency of leaf, the content of phloem soluble protein, the content of phloem superoxide dismutase, the activity of phloem peroxidase and the like can be remarkably improved, and damage of low-temperature stress to a phloem cell membrane and a leaf photosynthetic system of a rubber tree is reduced; rubber flowing of the rubber trees is inhibited, and damage of rubber flowing to the rubber trees is reduced.

The invention relates to a device for the improvement of the air quality. The device suits for a cabin with surrounding walls, which can reduce the carbon dioxide concentration in the air of the cabin and maintain the oxygen concentration. The device comprises a compressor which is provided with an air inlet and an air outlet, a heat exchanger and an air separation module which is provided with an inlet and a first outlet. The heat exchanger is communicated with the compressor; the inlet of the air separation module is communicated with the heat exchanger; wherein the air separation module is used to separate a reformed gas which is produced by the carbon dioxide and the nitrogen in the air from the compressor and the heat exchanger; the reformed gas is discharged from the first outlet of the air separation module.

The invention discloses a method and device for adjusting the indoor carbon dioxide concentration and an air conditioner. The method for adjusting the indoor carbon dioxide concentration comprises the steps that the indoor carbon dioxide concentration is collected; when it is determined that the indoor carbon dioxide concentration reaches a preset concentration threshold value, carbon dioxide in indoor air is collected; the time for collecting the carbon dioxide is collected; and when it is determined that the time for collecting the carbon dioxide is larger than or equal to a first preset time threshold value, the collected carbon dioxide is discharged outdoors. According to the method, the indoor carbon dioxide concentration can be effectively reduced, and the indoor air quality reaches the user comfort index.

There is provided a less expensive carbon monoxide converter whose catalyst temperatures can be precisely controlled even under a high load, with excellent catalyst durability. The carbon monoxide converter comprises shift catalyst beds arranged in tandem for conducting a shift reaction for converting CO and H₂O to H₂ and CO₂.

The invention discloses a household waste marsh gas power generation system. The system comprises a marsh gas generating unit, a marsh gas desulfurization unit and a power generator set; the marsh gasgenerating unit comprises a classification cleaning tank, a digestion reaction kettle, a regulating tank and an anaerobic tank which are sequentially connected; the marsh gas desulfurization unit comprises a first steam separator, a front cooler, a wet type desulfurizing tower, a dry type desulfurizing tower and a decarburization tower which are sequentially connected; the anaerobic tank is connected with the first steam separator, and the decarburization tower is connected with the power generator set. Household waste can be effectively recycled for power generation, energy conservation andenvironmental protection are achieved, the waste recycling rate is increased, meanwhile, the desulfurizing effect is good, the desulfurizing efficiency is high, the concentration of carbon dioxide inmarsh gas is lowered, and the requirement for clean and environment-friendly energy resources is met.