2544 results about "Gas emissions" patented technology

A highly fire-resistant and environmentally-friendly panel of 2 mm to 28 mm may be manufactured by a blending of magnesium compounds, sodium silicate, kaolin, fillers, and additives to form the core materials, reinforced by 4 layers of fire-resistant glass fiber meshes and fabrics. Using a proprietary ITC process that accelerates the chemical reactions of the ingredients to generate sufficient heat without external supply of energy, the panels may be completely cured within 24 hours instead of 10 days. The use of waste materials, energy-saving curing system and no gas emission manufacturing process combined to make this panel an eco-friendly product which offers the world's highest-rated fire resistance of 5 hours, high flexural strength, low density, durability and effective water-resistance.

The present invention relates to methods for hindering formation of tobacco-specific nitrosamines during processing of dark fire tobacco, as well as a facility in which at least portions of these methods may be conducted. According to the present invention, dark fire tobacco that has been harvested and that is generally green and/or yellow is exposed to an uncontrolled, yet active, ambient airflow so as to provide a substantially aerobic environment about the tobacco. This exposure of the dark fire tobacco to the ambient airflow may be done until the tobacco is substantially brown and/or substantially free of enzymatic activity. Subsequently, the tobacco is exposed to gaseous emissions (e.g., smoke) from combusting sawdust/wood. This step may be conducted at least until the tobacco exhibits a moisture content of no more than about 16% and/or until the tobacco exhibits a gloss or shine on a surface of the tobacco.

The invention relates to a hydraulic fracturing anti-reflection technology for pumping and exploring gas by drilling a hole in a coal mine well, comprising the following steps sequentially: (1) selecting a fracturing location; (2) determining the pressure type according to observed coal type, laneway arrangement and construction development degree, and ways of top soleplate bedding plane borehole hydraulic fracturing, top soleplate translamellar borehole hydraulic fracturing, the coal bed bedding plane borehole hydraulic fracturing or the coal bed translamellar borehole hydraulic fracturing can be adopted; (3) determining borehole parameters for constructing drilling, wherein, the borehole parameters include borehole length, borehole height, aperture, obliquity angle and azimuth angle; (4) designing the hydraulic fracturing, including injected water volume and injection pressure; (5) borehole washing; (6) draining; (7) examining the fracturing effect, if the fracturing effect is in accordance with the requirement, the following step is carried out, if not, turning to step (4); and (8) entering a pipeline for pumping and discharging. The technology enhances the air permeability of the coal bed, reduces the gas emission rate of an excavation working face, and obviously promotes the pumping and exploring capability and the pumping and exploring effect of the single borehole. The pumping and discharging efficiency is improved, the pumping and discharging time is shortened and the damage of the gas is maximally eliminated.

The invention relates to the field of coal mine safety technique, specifically to a down-hole coal and gas outburst hazard early warning system and early warning method. The coal and gas outburst synthesized early-warning system, uses the existing local area network to connect a synthesized early-warning data server, an early-warning data management system and the existing coal mine safety monitoring system; analyzes the coal and gas outburst early-warning data in the synthesized early-warning data server by an outburst early-warning module; and emits early-warning information based on the analyzed result. The inventive coal and gas outburst synthesized early warning system and early warning method can perform centralized management and comprehensive analysis of the geological structure, coal seam occurrence, gas occurrence, mining production, daily forecast indicators, outburst forecast, gas emission and other security information that originally scatter in various functional sections of coal mine on the geographical information system GIS platform, integrates the existing resources, improves the accuracy of early warning, so that the early warning is both real-time and forward-looking, and can effectively prevent the occurrence of coal and gas outburst in coal mine.

An assembly for treating gaseous emissions includes a substrate body having cells for the passages of emissions gas. Lengths of metal wire are located in selected ones of the cells and an induction heating coil is mounted adjacent the substrate body for generating a varying electromagnetic field for inductive heating of the assembly including gaseous emissions passing along the cells. Within the cells, parts of the cell walls and parts of the wire surfaces are exposed to the passage of the gaseous emissions and both the cell wall parts and the wire surface parts have pollution treating catalyst at their surfaces.

The invention provides a four-wheel driven hybrid vehicle driving system capable of meeting the needs of a motor vehicle for torque during running in an urban area and reducing oil consumption and tail gas emission and a driving management method thereof. The driving system comprises an engine driving front wheels, an ISG motor coaxially arranged with the engine and a driving motor driving rear wheels, wherein the engine is connected with an engine management unit; the ISG motor is connected with an ISG motor control unit; the driving motor is connected with the motor control unit; and the ISG motor and the driving motor are connected with a high voltage battery through an inversion unit. The key point is that the driving system also comprises a vehicle control unit and a high voltage management unit connected with the high voltage battery. The vehicle control unit, the high voltage management unit, the engine management unit, the ISG motor control unit and the motor control unit are connected through CAN buses; and the vehicle control unit is also connected with an accelerator pedal position sensor and a vehicle speed sensor.

The invention provides a desulphurization method for acid gas, which comprises the following steps: firstly, carrying out heat combustion reaction on the acid gas and fuel in a combustion chamber; secondly, carrying out catalytic reduction reaction on the obtained combustion product; thirdly, combusting tail gas obtained by the catalytic reduction reaction; and fourthly, carrying out ammonia elution on sulfur dioxide in gas obtained after combustion to obtain ammonium sulphate. The desulphurization combined process for the acid gas has no strict requirement on the Claus combustion, does not need multistage Claus reaction, and even does not control the Claus reaction strictly; and wastewater subjected to ammonia washing in the acid gas containing ammonia is not discharged to a sewage treatment center of a factory, and a fussy device is not needed to add for ammonium refining and recovery. The method can balance the ammonia and the Clause reaction according to the yield of the ammonium sulphate, and does not have sewage discharge; heat required by the process can be balanced through by-product steam, so that the method greatly saves the investment and operation cost, and has short flow and simple operation; and the gas emission can be far lower than the national emission standard.

A directional water pressure blasting method for improving coal bed gas permeability includes utilizing water pressure blasting splitting to change the structure of the coal and rock mass, firstly drilling holes inside a coal bed, performing high-pressure hydraulic cutting seam, and forming a deep flat slot around the drilling holes of the coal bed after cutting; and filling explosive into the drilling holes of the coal bed, then injecting water and sealing the hole, detonating the explosive to perform water pressure blasting, and enabling the periphery of the drilling holes of the coal bed to generate directional expanding fractures under the function of detonation pressures. Performing water pressure blasting in a high-gas low gas permeability coal bed can organically combine the waterpower and the explosive force of the explosive fully and reasonably, the water pressure blasting enables the cracks generated by hydraulic cutting seam to further expand and a directional expanding cross fracture net is formed on the periphery of the drilling holes of the coal bed, so that the gas permeability of the coal bed is greatly improved, the problem that the gas of the coal bed is hard to extract due to the small number of the cracks can be effectively solved, the concentrated stress of the coal bed is transferred to the deep of the coal mass, and the capacity of gas emission is improved. The directional water pressure blasting method for improving the coal bed gas permeability is simple in process, convenient to operate, safe, reliable, and good in controllability and effects.

Apparatus and methods for augmenting the Mark 13a process of Van Zelzen et al., by providing for the addition of dispatchable energy storage and/or additional waste stream treatments. Sulfur-containing stack gas emissions from the burning of fossil fuels for electricity production are cleaned, removing the sulfur by use of the Bunsen reaction. The process produces hydrogen and sulfuric acid as byproducts. The hydrogen output of the process can be used to co-produce electricity in a reversible fuel cell, and optionally can be stored so that electricity can be produced during periods of high demand. Optionally the hydrogen can be reacted with air-nitrogen or nitrogen from the combustion gasses to produce ammonia. The sulfuric acid can optionally be reacted with iron or aluminum to produce iron or aluminum sulphates and additional electricity. In addition, mercury removal from the gas emissions from burning fossil fuels (primarily coal) can be performed.

The invention relates to a direct pyrolysis device. In the direct pyrolysis device, a heating part comprises a primary heating part and a secondary heating part; both a feed part and an auxiliary part are connected with the primary heat part; a dedusting part comprises a primary dedusting part and a secondary dedusting part; an emission part comprises a gas emission device and a soil emission device; the primary heating part is orderly connected with the primary dedusting part, the secondary heating part, a quenching part, the secondary dedusting part, a washing part and the gas emission device; the primary heating part is also connected with the soil emission device; all the components are respectively connected with a monitoring part; the washing part is a washing tower; and the tail end of the washing tower is connected with the gas emission device. The invention has the advantages of high handling capacity, low energy consumption, low handling cost and the like, maintains the advantages of physico-chemical properties of soil and the like, and can effectively separate organic substances from contaminated soil and dispose the contaminated soil.

Provided is a catalyst article for treating an emission gas comprising (a) a noble metal catalyst layer comprising one or more noble metals disposed on a first refractory metal oxide support; and (b) a vanadium catalyst layer comprising vanadium pre-fixed on a second refractory metal oxide support selected from alumina, titania, zirconia, ceria, silica, and mixtures of these, wherein the first catalyst layer is in physical contact with said second catalyst layer. Also provided is a method for making such a catalyst article, a method for treating gas emissions using such an article, and an emission gas treatment system incorporating such an article.

The invention discloses a method for extracting gas from a separation layer below an overlying strata, draining water and grouting through a combined drill hole and belongs to a mine disaster prevention method. The method for extracting gas from the separation layer below the overlying strata, draining water and grouting through the combined drill hole includes that installing a drill site at a transportation roadway of a preparatory work face adjacent to a coalface, constructing the combined drill hole in the part about to generate the separation layer below the overlying strata above the gob of the coalface in a mode of keeping away from a caving zone, wherein the combined drill hole is composed of an inside gas extraction pipe and a water draining-grouting pipe; after the separation layer is generated, preventing the mine disaster according to the stages that firstly, draining water from the separation layer through the combined drill hole; secondly, after the gas is gathered in the separation layer after the water in the separation layer is emptied, using the primary combined drill hole to extract the gas from the separation layer; finally, after the water and gas are completely drained and extracted from the separation layer, filling cement paste to the separation layer through the primary combined drill hole. The method for extracting gas from the separation layer below the overlying strata, draining water and grouting through the combined drill hole is capable of solving the mine disasters of water bursting in mine, gas outburst (gas emission), rock burst, surface subsidence and the like through the combined drill hole, the separation layer water and gas extraction rate is high, and the grouting effect is good.

The invention discloses integrated and comprehensive soil in-place position-changing combined remedying equipment, and belongs to the technical field of soil remedying. The equipment mainly comprises feeding and discharging machines, heating baking channels, conveying belts, a vacuum pump, a smashing device, a mixer, a solid chemical adding tank, a Venturi conveying pump, an ultrasonic atomizer, a peristaltic pump, a liquid chemical storage tank, a drip washing device, an activated carbon adsorption purification tank, a mud discharging electromagnetic valve and an absorbent storage tank. The modularized design is adopted for the whole set of remedying equipment, flexible matching and combining can be performed according to different types of polluted soil to be remedied, and therefore the cost is lowered. The whole set of equipment can be installed on a trailer to achieve moving operation. The equipment has the multiple remedying functions of thermal desorption treatment, chemical oxidation/restoration, chemical drip washing and others, can achieve in-place position-changing combined remedying on soil containing organic pollutants and heavy metal combined pollution, and is high in remedying efficiency, wide in range, free of harmful gas emissions, safe and environmentally friendly.

A system and method for calculating a value indicative of the amount of an undesirable constituent of a volatile gas stream that is removed from the atmosphere. Data received at a higher sampling rate is subjected to a plurality of validation processes and data that is determined to be faulty is then quarantined. Quarantined data can be replaced, however, an audit trail is generated to indicate what data has been replaced and the underlying rationale for the replacement data.

The invention relates to a method for recovering exhaust gas according to the polyolefin gas phase method. The method for recovering the exhaust gas comprises the following steps: 1) compression, condensation and separation steps are carried out; 2) after the compression, condensation and separation steps, gas enters a heat exchanger to be subjected to cryogenic separation; 3) compressed and condensed liquid and liquid subjected to cryogenic separation are subjected to gas-liquid separation through a separation tank, and after the flash evaporation, light component gas flows to a compressor to be recycled; 4) after cryogenic separation, part of uncondensed gas enters a membrane separation device to enable hydrocarbons to be further recovered; 5) after membrane separation, hydrocarbon-rich phase gas returns back to the compressor to be recycled, hydrogen-deficient phase gas flows to an unpowered expansion refrigeration device to enable hydrocarbons to be recovered, and obtained high-purity nitrogen is used as supplementation gas for sweeping gas of a product receiving bin or a degassing bin. According to the method for recovering the exhaust gas, unreacted monomers can be effectively recovered, the gas emission can be reduced, the total utilization of the monomers can be increased, the gas consumption amount of the sweeping gas can be reduced, the cost can be reduced, the power of the compressor can be reduced, and the energy consumption of the heat exchanger can be reduced.

For the purpose of reduced NOx gas emission, a gas turbine engine comprises a cylinder having a combustion region inside of the cylinder; a resonator having a cavity and provided around the surface of the cylinder and sound absorption holes formed on the cylinder and having opening ends on the cylinder.

The invention belongs to a light-weight engine cylinder sleeve of a passenger vehicle and a production method of the light-weight engine cylinder sleeve. Black spots are distributed on the outer circular surface of the cylinder sleeve, wherein the shapes of the black spots comprise a dumbbell shape, a positive frustum shape, a worm shape and an olecranon shape; the black spots in the four shapes are randomly distributed on the outer circular surface of the cylinder sleeve; the black spots are 0.25-1.1mm in height. The black points of the cylinder sleeve are only 0.25-1.1mm; the blank cooling speed in the centrifugal casting process of the cylinder sleeve is obviously reduced, thereby obviously improving a metallographic structure, improving the friction resistance of the cylinder sleeve and prolonging the service life of the cylinder sleeve; meanwhile, the black spots are small in height fluctuation, so that the roundness fluctuation in the process of casting an aluminum cylinder body is remarkable reduced; the possibility that engine oil sneaks into a combustion chamber is reduced; the tail gas emission of the combustion chamber is reduced; by the low-height black spots and the excellent metallographic structure, the wall thickness of the cylinder sleeve is reduced by 1mm; the cylinder center distance of the engine cylinder sleeve is reduced by over 2mm.

The invention provides a multifunctional gasoline compound additive which is capable of reducing fuel consumption and decreasing the pollution caused by tail gas emission. The additive comprises a gasoline cleaning agent, a combustion improver, a low temperature start improving agent, an antiknock agent, an anti-oxidizing and anti-gum agent and a metal corrosion inhibitor. By adopting the gasoline compound additive, the cleanness, oxidation resistance and anti-corrosion performance of gasoline can be improved; and meanwhile, the combustion performance of fuel oil can be improved, the fuel consumption is reduced, and the automobile tail gas pollutants can be reduced.

The invention relates to a system and a method for remotely monitoring automobile tail gas. The system comprises a monitoring main machine, an automobile owner mobile phone, a tail gas detection vehicle-mounted terminal and a global position system (GPS), wherein the tail gas detection vehicle-mounted terminal and the GPS are installed on an automobile. The tail gas detection vehicle-mounted terminal comprises a tail gas sampling mechanism, a tail gas sensing mechanism and tail gas analyzing mechanisms, wherein a gas inlet of the tail gas sampling mechanism is connected with an exhaust pipe, a gas outlet of the tail gas sampling mechanism is connected with an automobile silencer, the tail gas sensing mechanism and the GPS are electrically connected with each tail gas analyzing mechanism, the tail gas analyzing mechanisms are connected with the monitoring machine through a wireless network, and the monitoring main machine is connected with the automobile owner mobile phone through the wireless network. The tail gas detection vehicle-mounted terminal sends tail gas detection data and automobile position data to the far-end monitoring main machine which screens out the automobile exceeding emission level of tail gas and frequently running in urban areas and sends warning and rectification information to the automobile owner mobile phone of the automobile exceeding emission level of tail gas. By means of the system and the method for remotely monitoring the automobile tail gas, real-time monitoring and warning on the automobile tail gas are performed, control to automobile tail gas emission is strengthened, and air quality is ensured to be improved.

The invention provides a waste paper reinforced recycled high density polyethylene composite material, which is characterized by comprising the following raw materials by mass percentage: 5 to 15 percent of waste paper, 85 to 95 percent of recycled high density polyethylene, 0 to 4 percent of coupling agent and 0 to 10 percent of compatilizer. The waste paper is mixed with the recycled HDPE, the coupling agent and the compatilizer after fiber dispersion, and the mixture is sent into an open dual-roller mixing device for mixing and homogenizing, pressed by a section mold, and then cooled, demoulded and made into the waste paper reinforced recycled high density polyethylene composite material. The waste paper reinforced recycled high density polyethylene composite material not only can fully utilize the waste paper and waste plastics and change the waste into the valuable but also can greatly improve the comprehensive utilization level of waste resources and save a large number of resources, and simultaneously can reduce the environmental pollution caused by mismanagement of waste material resources. Moreover, the waste paper reinforced recycled high density polyethylene composite material has the advantages of simple technique, short flow, low investment, no pollutant emission, energy conservation and low consumption, low cost of the raw materials, good texture and high strength of the composite material obtained, and no harmful gas emission, and is a waste utilization project which is favorable for the country, the people and the enterprises.