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671 results about "Greenhouse gas" patented technology

A greenhouse gas (sometimes abbreviated GHG) is a gas that absorbs and emits radiant energy within the thermal infrared range. Greenhouse gases cause the greenhouse effect. The primary greenhouse gases in Earth's atmosphere are water vapor, carbon dioxide, methane, nitrous oxide and ozone. Without greenhouse gases, the average temperature of Earth's surface would be about −18 °C (0 °F), rather than the present average of 15 °C (59 °F). The atmospheres of Venus, Mars and Titan also contain greenhouse gases.

Gas engine electric power generating system effectively utilizing greenhouse gas emission credit

ActiveUS20050205022A1Promote economic developmentInternal combustion piston enginesFinanceGreenhouse gasCarbon dioxide
The gas engine electric power generating system in which the electric power generating apparatus composed of an electric power generator connected with a gas engine of a pilot fuel oil ignition type is installed near a coal mine and the recovered methane gas and ventilated methane gas taken out of the mine shaft are introduced into the cylinder of the gas engine while being adjusted to be introduced as a lean methane/air mixture to operate the engine to produce electric power, is established near coal mine in developing country including China, the carbon dioxide emission credit produced by the difference in greenhouse effect index between the case where coal mine methane gas is released to the atmosphere and where said methane gas is utilized by the gas engine electric power generating system to be released to the atmosphere as carbon dioxide, is registered on a emission credit market to be traded with credit surcharge payment obligators(or those who want to purchase the emission credit). The invention also includes the affiliated system of mutual patronage relation constituted by one or a plurality of the systems and nearby power generating system or systems using coal bed methane or pre-mining gas as fuel.
Owner:MITSUBISHI HEAVY IND ENGINE & TURBOCHARGER LTD

Method for remediating cadmium contaminated soil of vegetable field in situ by compounding bio-charcoal and organic fertilizer

InactiveCN102553905APollution passivation repair effect is remarkableNot easy to decomposeContaminated soil reclamationBiocharContamination
The invention relates to a method for remediating cadmium contaminated soil of a vegetable field in situ by compounding bio-charcoal and an organic fertilizer. The method comprises the following steps of: applying a passivation material obtained by compounding the bio-charcoal and the organic fertilizer in a mass ratio of 1:1 to a surface layer of soil of a cadmium contaminated vegetable field, fully and uniformly mixing the passivation material and the soil in a plowing layer with the thickness of 0 to 20cm, judging the contamination level of the soil according to environmental quality standard for soils GB15618-1995, and ensuring that the application rate of the passivation material is not less than 0.5 percent of the weight of dry soil, namely 750kg/mu when the cadmium concentration of the soil is 1.0 to 2.9mg/kg. The invention has the advantages that: raw materials of the passivation material are wide in source and low in cost, the application method is simple and has a remarkable effect of remediating the cadmium in the soil in a passivation way, and the risk of secondary contamination is avoided; and the bio-charcoal is applied into the soil, so the passivation material has the effects of reducing the discharge of greenhouse gas of farmland ecosystems, increasing the content of organic carbon of the soil, improving soil structures and the like, and has huge popularization and application value.
Owner:AGRO ENVIRONMENTAL PROTECTION INST OF MIN OF AGRI

Efficient high-pressure liquid air energy storage/release system

The invention discloses an efficient high-pressure liquid air energy storage/release system, which comprises an energy storage subsystem and an energy release subsystem; in the energy storage subsystem, a low-pressure compressor set (1'), a high-pressure compressor set (1), a cold accumulator (2), a low-temperature heat exchanger (3), a high-pressure low-temperature storage tank (4), a low-temperature expansion machine set (6) and a low-temperature heat exchanger (3) are communicated in sequence; a driving unit (9) drives the high-pressure compressor set (1), and the low-temperature expansion machine set (6) drives the low-pressure compressor set (1'); the energy release subsystem comprises a self-pressurization unit (5) and an acting unit; and the high-pressure and low-temperature storage tank (4), the cold accumulator (2), a heat accumulator/heat exchanger (7) and a main expansion machine set (8) are connected in sequence, and the main expansion machine set (8) drives a power generator (24). The energy storage system disclosed by the invention has the advantages of high energy density, high efficiency, no power consumption in the power generation stage, suitability for various power stations, no greenhouse gas generation, capability of recovering intermediate-temperature and low-temperature waste heat and the like.
Owner:INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI

Process and equipment for converting carbon dioxide in flue gas into natural gas by using dump power energy

ActiveCN102660340AEasy to importSolve the problem of difficult power storageCellsHydrocarbon from carbon oxidesElectrolysisWater vapor
The invention discloses a process and equipment for converting carbon dioxide in flue gas into natural gas by using dump power energy. According to the process, water is electrolyzed by using the dump power energy to generate hydrogen gas; the hydrogen gas and carbon dioxide captured from industrial flue gas are enabled to generate methanation reaction; meanwhile, water is heated by using the heat generated by the methanation reaction to generate superheated water vapor for driving a steam turbogenerator to generate power which is used for supplementing power energy for electrolyzing water, and thus natural gas which can be conveniently stored or conveyed is obtained by synthesizing. The equipment is mainly formed by combining a transforming and rectifying device, an electrolytic bath, a steam turbogenerator, a carbon dioxide heater, at least two-stage of fixed bed reactors, various indirect heat exchangers, a steam drum, a natural gas condenser and a process water pipeline. According to the process and equipment disclosed by the invention, the defects that internet obstacles exist or power is excessive in a short time and difficult to store in a mode of generating power by using renewable energy sources are effectively overcome, the problem that the environment is polluted by room temperature gases in a mode of generating power by using fossil energy is effectively solved and the renewable energy sources and carbon dioxide waste gas can be reasonably utilized.
Owner:WUHAN KAIDI ENG TECH RES INST CO LTD

Method and device for producing hydrogen by using chemical chain

The invention provides a method and device for producing hydrogen by using a chemical chain. In the method, perovskite type oxide is selected to serve as an oxygen carrier; a main body structure of the device comprises a fuel reactor, a water vapor reactor and an air reactor. Fuel and the oxygen carrier undergo a chemical chain combustion reaction in the fuel reactor to generate CO2 and H2O; oxygen elements required by the fuel are from lattice oxygen of the oxygen carrier; the reduced oxygen carrier is delivered to the water vapor reactor to react with high-temperature water vapor, restore part of lattice oxygen and simultaneously generate H2; the oxygen carrier is delivered to the air reactor to react with high-temperature air to be further oxidized and completely restore the lattice oxygen; the oxygen carrier is carried to a cyclone separator by high-speed air current; gas is emptied; and the oxygen carrier is delivered again to the fuel reactor to be recycled. According to the method and device, the automatic separation of CO2 is realized when pure H3 is produced and the emission of greenhouse gas is avoided. The oxygen carrier has the advantages of sable structure, favorable oxygen loss and supply capabilities and long service life.
Owner:GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI

Graphite-phase nitrogen carbide nanosheet/cobaltosic oxide nanosheet composite nanomaterial of scale-shaped structure and preparation method and application thereof

The invention aims at providing a method for synthesizing a scale-shaped graphite-phase nitrogen carbide nanosheet/cobaltosic oxide nanosheet composite material and belongs to the technical field of material preparation and catalysis. The composite material is prepared from the raw materials of functionalized graphite-phase nitrogen carbide and cobalt salt through a hydrothermal method at high temperature. The prepared scale-shaped two-dimensional nitrogen carbide nanosheet/cobaltosic oxide nanosheet composite material is in morphology that a scale-shaped cobaltosic oxide nanosheet nanocomposite material evenly grows on the surface of a two-dimensional nitrogen carbide nanosheet. Compared with a traditional pure two-dimensional nitrogen carbide nanomaterial, the specific surface area of the material and the screening capacity of the material to a catalytic substrate are effectively improved, and the material has more efficient photocatalytic performance. The preparation method has the advantages of simple technology, low cost and high catalytic efficiency; the prepared material has efficient carbon dioxide reducing capacity, and thus has good application prospect in the photocatalysis field of environmental modification, greenhouse gas elimination and the like.
Owner:FUJIAN MEDICAL UNIV

Main and auxiliary power supply switching system for electric vehicle

The invention discloses a main and auxiliary power supply switching system which comprises a main power battery pack, an auxiliary power battery pack and a battery pack management system. An anode terminal of the main power battery pack and an anode terminal of the auxiliary power battery pack are both connected in series with one relay. The battery pack management system controls the working state of each relay by sending an operation signal to each relay; when the relay connected in series with the anode terminal of the main power battery pack is in the working state, the main power battery pack is switched into a power supply circuit; and when the relay connected in series with the anode terminal of the auxiliary power battery pack is in the working state, the auxiliary power battery pack is switched into the power supply circuit. After the main and auxiliary power supply switching system with the structure is adopted, a conventional electric vehicle can run for a longer mileage, a traffic accident caused by power failure of power battery packs in the running process of the vehicle also can be avoided, the safety performance of the electric vehicle is improved, the resource waste is avoided, the emission of greenhouse gases is reduced, and the main and auxiliary power supply switching system also provides more convenience for consumers.
Owner:MICROVAST POWER SYST CO LTD
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