66 results about "Atmospheric emissions" patented technology

A coal syngas or other syngas fired power plant is provided with no atmospheric emissions. Coal or other starter fuel is gasified within a gasifier which also receives oxygen and steam therein. The oxygen is provided from an air separator. Syngas produced within the gasifier is combusted within a gas generator along with oxygen from the air separator. Water is also introduced into the gas generator to control the temperature of combustion of the syngas with the oxygen. Products of combustion including steam and carbon dioxide are produced within the gas generator. The combustion products are expanded through a turbine for power output and then separated, such as within a condenser. Water discharged from the condenser is at least partially recirculated back to the gasifier and the gas generator. Carbon dioxide from the separator is compressed for capture without release into the atmosphere.

The invention provides an atmospheric pollution discharge remote sensing monitoring method and an atmospheric pollution discharge remote sensing monitoring system based on an unmanned aerial vehicle. The method comprises the following steps: enabling the unmanned aerial vehicle with fixed wings to fly according to a preset flight line, obtaining video data in a flight pollution source area, and sending the video data to a central processor; determining the flight adjustment information of the unmanned aerial vehicle with fixed wings, and sending the line adjustment information to the unmanned aerial vehicle with fixed wings; flying according to the flight adjustment information, and obtaining the images of pollution discharge enterprises and the space information and flight attitude information of the unmanned aerial vehicle with fixed wings; enabling the unmanned aerial vehicle with fixed wings to send the images of pollution discharge enterprises, the space information and the flight attitude information to the central processor, and obtaining the space distribution information and pollution discharge information of the pollution discharge enterprises. Through the atmospheric pollution discharge remote sensing monitoring method and the atmospheric pollution discharge remote sensing monitoring system based on the unmanned aerial vehicle provided by the invention, powerful evidences can be provided for environmental surveillance and law enforcement, the method is free of constraint of time and topographic conditions or interference of human factors, and atmospheric pollution discharge behaviors are supervised.

The invention relates to a method used to separate ethylene and hydrogen at the same time from the dry gas of an oil refinery, in particular to a method used to separate ethylene and hydrogen from the dry gas of an oil refinery through pressure swing adsorption. The method is carried out according to the following: the first step: elimination of carbon dioxide is completed; the second step: dehydration is completed; the third step: the extraction of ethylene is realized through pressure swing adsorption; and the fourth step: the recovery of hydrogen is finished through pressure swing adsorption. The method has the advantages that: both ethylene and hydrogen are separated from the dry gas of an oil refinery along with better separation effect, a simple flow and low energy consumption; the raw material adopted by the method has low price and adapts well to the raw gas of the dry gas of an oil refinery; valuable resource is obtained from waste gas and is used to further manufacture subsequent products with high added value; meanwhile, the method reduces atmospheric emission to protect the environment and has a long service life of equipment, low operating cost and lower cost; moreover, the method is especially suitable to make the raw material of a propionaldehyde production device which adopts water-soluble rhodium-phosphine complex compound as catalyst.

The invention provides a method for recycling ammonia during the production of ammonium paratungstate. During the evaporation and crystallization of a solution for producing the ammonium paratungstate, free ammonia in the solution and ammonia released by the crystallization process can be volatilized in a gas state. Firstly, a closed vessel is used to collect gaseous ammonia; secondly, the ammonia is reclaimed through the mode of condensation and separation; and finally the reclaimed ammonia can be returned to the main production process and be used for preparing a strippant. The method reduces the consumption of liquid ammonia during the production of the ammonium paratungstate, thereby greatly reducing the production cost and having an ammonia reclamation rate of above 90 percent. Simultaneously, the method prevents the air pollution caused by a large amount of evaporated and overflowed ammonia gas; and the atmospheric emission reaches national standards. Therefore, the method reduces the corrosion of workshop equipment and realizes the reclamation of the ammonia, thereby not only realizing considerable economic benefits, but also realizing certain social and environmental benefits.

Process and apparatus for extraction of oil and hydrocarbons from crushed hydrocarbonaceous solids (101), such as oil shale, involving the pyrolyzing of the crushed solids (101) with liquid hydrocarbon (104) and hot gas such as syn gas (103) rich in hydrogen, carbon dioxide and carbon monoxide or a solid hydrocarbon such as gilsonite. Crushed hydrocarbonaceous solids are treated with a hydrocarbon and hot gas in a rotary kiln (105) where the crushed solids are cascaded into the hot gas for sufficient time to strip the volatile liquids and gases found in the solids, removing the vaporized liquids, enriched hot gas and spent crushed solids from the kiln, fractionating the vaporized liquids (106) and enriched syn gas into the desired fractions. Use of hot syn gas is particularly suited for use in conjunction with combined-cycle electricity generation (110) and in the preparation of various by-products. The process efficiently recycles heat and energy to reduce harmful atmospheric emissions and reliance on external energy sources.

The invention discloses a wet type electric dust-removing device. The wet type electric dust-removing device comprises a wet type absorption tower, a smoke guide pipeline, a wet type electric dust collector and a smoke discharge pipeline, wherein a smoke inlet is formed on the wet type absorption tower; the front end of the smoke guide pipeline is connected to the upper end of the wet type absorption tower; the rear end of the smoke guide pipeline is connected to the upper end of the wet type electric dust collector; the front end of the smoke discharge pipeline is connected to the lower end of the wet type electric dust collector; the rear end of the smoke discharge pipeline is communicated with a chimney; the wet type electric dust collector is arranged vertically; and the smoke passes through the wet type electric dust collector from top to bottom and then enters the smoke discharge pipeline. The wet type electric dust collector is arranged below the rear end of the smoke guide pipeline, so that the smoke flows downwards, flushing liquid on an anode plate flows downstream, the flowing direction of the flushing liquid is consistent with that of the smoke, the anode plate can collect fine particles and aerosol in the smoke conveniently, composite pollutants can be removed efficiently from the smoke, environmental pollution is reduced, and the increasing atmospheric emission standard is met.

The invention relates to a vacuum process of steam injection and final pressure air injection of a vacuum degassing system, which adopts the following vacuum process flow: RH vacuum smelting of exhaust gas by a circulation vacuum degassing method, main vacuum valve, gas cooler, primary SE1 steam injection vacuum pump, secondary SE2 steam injection vacuum pump, primary C1 condenser, tertiary SE3a steam injection vacuum pump, tertiary SE3b steam injection vacuum pump and tertiary SE3c steam injection vacuum pump and secondary C2 condenser; and secondary C2 condenser, quartus SE4a pressure air injection vacuum pump and quartus SE4b pressure air injection vacuum pump, atmospheric emission buffer tank and atmospheric emission. According to the vacuum process flow, steam injection vacuum pumps and final pressure air injection vacuum pumps are adopted, and the vacuum system adopts dynamic vacuum pumps and does not adopt mechanical positive displacement pumps; final pumps adopt pressure air with low price; and the vacuum system has advantages in the aspects of equipment number, land occupation, investment, operation reliability, maintenance and overhaul and the like.

A steam reheat process is provided to enhance a thermal power cycle, and particularly a renewable steam thermal cycle. An oxyfuel combustion gas generator is provided which combusts a hydrogen and/or carbon containing fuel with an oxidizer of primarily oxygen to generate products of combustion including steam and/or carbon dioxide. Water from the thermal cycle is directed to the reheater for mixing with the products of combustion within the reheater to generate a working fluid containing steam. This steam is routed through a turbine or other expander and power is outputted from the system. The water is optionally thereafter condensed and at least partially routed back to the thermal cycle. Any carbon dioxide within the working fluid can be separated in a condenser downstream of the expander for capture of the carbon dioxide, such that increased power output for the thermal power cycle is achieved without atmospheric emissions.

The invention discloses intelligent environmental protection asphalt mixing equipment loading system, through the driveway adaptive closed module building half closed/closed loading environment, effectively avoiding the pollution spillover, and reducing the spread of noise; Through the finished intelligent load module product to ensure the uniformity and continuity of the aggregate load, and ensure the quality of the load; Through the asphalt smoke processing module to get rid of the harmful material in asphalt gas rapidly, efficiently and thoroughly, and make it reach the standard atmospheric emissions; Through the dust processing module, reducing the environment pollution; Through the dry fog dust module effectively reducing the load of dust and the concentration of suspended particles, then improving the comfort of finished product loading zone . Compared with the existing technology, the present invention is simple and practical, with high integration automation, simple operation, which is used to solve the problems of difficult loading, low efficiency, material segregation, noise, dust and asphalt gas pollution and other issues in loading process.

The invention discloses a compound microbial fertilizer which is composed of the following materials in parts by weight: 42-50 parts of powdered rock phosphate, 16-22 parts of bran shell powder, 15-26 parts of rape seed cake powder, 6-12 parts of urea, 1-3 parts of Brevibacillus laterosporus and 2-4 parts of bacillus subtilis. By utilizing the compound microbial fertilizer, the formula composition is scientific and reasonable, rejected ore with the rock phosphate grade less than 18% is fully used, a current mature microbial technology is adopted, waste materials are recycled, environment pollution and atmospheric emission are reduced, and an ecological green living environment is created. The compound microbial fertilizer has significant phosphorus and potassium decomposition effect and good growth promotion and disease prevention effects and is comprehensive and balanced in nutrition, complementary in three effects, environmental friendly, harmless, and convenient for use.

The invention discloses a preparation method and application of a bentonite composite material for adsorbing and degrading site odorous substances. Bentonite is subjected to intercalation modificationby adopting an organic modifier and chitosan, after modified bentonite is obtained, an in-situ reaction process is utilized, calcium chloride and hydrogen peroxide are used as preparation raw materials, nano-micron calcium peroxide particles are generated in situ between layered structures of the bentonite under an alkaline condition under the promotion action of a cationic surfactant, and finally the modified bentonite loaded calcium peroxide composite material is prepared. The bentonite composite material has larger interlayer spacing and specific surface area, the loaded micro-nano calciumperoxide can continuously release hydrogen peroxide within a long time while efficient adsorption of the odorous substances is ensured, oxidative degradation of the odorous substances is realized, continuous supply of adsorption points is ensured, The bentonite composite material can be used for adsorption and degradation of the soil odorous substances on a non-disturbance interface of a pesticide industry site and atmospheric emission control.

The invention discloses a rubber exhaust gas purifying device and method, and belongs to the field of environment protection. The rubber exhaust gas purifying device mainly comprises a filter device, a photodecomposition device, a spraying device, an oxidant storage device, a UV ray generating device, and a blower fan. At first, rubber exhaust gas is introduced into the filter device to remove dusts so as to guarantee the continuous and stable operation of subsequent purifying devices; then the rubber exhaust gas is delivered to the photodecomposition device to degrade the pollutants primarily; finally the rubber exhaust gas is delivered to the spraying device to radically degrade VOCs in exhaust gas; clean gas is discharged out of the device by the blower fan; the organic pollutants in the wastewater generated during the spraying process are radically eliminated under the cooperation of UV rays generated by the UV ray generating device and an oxidant stored in the oxidant storage device, and clean water is returned to the spraying device. The provided rubber exhaust gas purifying device can effectively degrade dusts, stinky substances, and VOCs in rubber exhaust gas; and has the advantages of compact structure, low cost, no secondary pollution, and strong adaptability. The stricter atmospheric emission standards can be met.

The invention discloses a fly ash air-cooling drying system and process. The low-temperature drying system comprises an air-cooling circulating drying device and a finished product bin. According to the fly ash air-cooling drying process, circulating air at the temperature of 70 DEG C or below in the air-cooling circulating drying device is used for carrying out drying treatment on washed fly ash and related products of the fly ash, so that generation of heat-sensitive pollution factors such as dioxin can be avoided, and the defects of complicated equipment system, high energy consumption, small terrestrial heat, large-scale dust raising, high-index atmospheric emission and the like accompanying a traditional high-temperature drying process can be avoided, a discharged finished product material does not need to be cooled or maintained additionally and can directly enter a downstream process or be stored and the like, and the fly ash air-cooling drying system and process have the characteristics of safety, high efficiency, low consumption, energy conservation, low carbon, environmental protection, high comprehensive economy and the like.

An exhaust recovery device of a deaerator comprises a packing tower shell body, wherein the packing in the packing tower shell body is divided into an upper packing layer and a lower packing layer; the top part of the packing tower shell body is provided with an exhaust port; the upper part of the packing tower shell body is provided with a cold water inlet; the lower part of the packing tower shell body is provided with a steam inlet and a hot water outlet; a circulating hot water inlet is arranged on the packing tower shell body between the upper packing layer and the lower packing layer; one end of a water outlet pipeline is communicated with the hot water outlet and the other end of the water outlet pipeline is respectively communicated with the inlets of two water pumps; the outlets of two water pumps are communicated with the circulating hot water inlet; the pipeline between two water pumps is communicated with the water inlet pipe of the deaerator; the upper packing layer and the lower packing layer are structured packing layers; and the water pumps are centrifugal pumps. The exhaust recovery device of the deaerator can recover and utilize the heat in the steam which is exhausted by the deaerator, reduces the atmospheric emissions, saves the energy, protects the environment, and has simple structure and convenient use.

The invention relates to chemical technology and equipment, in particular, to methods and apparatuses for pyrolysis (gasification) in molten salts and/or alkalis of organic household and industrial waste. The task of the invention is to increase quality and quantity of obtainable pyrolysis gas.

Set task is achieved by formation of gas-tight plug from compressed waste in the supply channel. From outside of loading channel a layer of products of low-temperature waste processing is formed, at that along the loading channel temperature regime in the range from 20 to 550° C. is formed. Temperature regulation in the loading channel is carried out by dosed supply of water vapor and/or carbon dioxide into product layer of low-temperature processing waste.

Metals, oxides, salts or oxide hydrates thereof are added to waste as processing catalysts. Water vapor and/or carbon dioxide are supplied into the area of high-temperature processing.

Silicon dioxide is added to waste for melt regeneration.

The pipe of the waste loading device in the apparatus is equipped with the cooler for method implementation. The reactor pipe, damper chamber and shell of operating area are located coaxially with the pipe of loading device in the apparatus. The blades, providing melt twisting and dispersion of gaseous products in melts, are installed in the operating area of the device. The heating tubes are located in the area between the operating area shell and vessel. The apparatus is equipped with the displacing device for slug discharge.

Proposed method and device allow to obtain optimal gas composition for its further use in production of electric power of for synthesis of, for example, alternative engine oil. At that oxygen or air are not used and harmful and atmospheric emission are practically absent.

The invention relates to an ash settling, denitrifying and cooling all-in-one machine for flue gas of a straw combustion boiler and an implementation method. Hot flue gas generated during combustion of straw fuels enters an ash settling chamber, so that one part of flying ash freely settles relying on gravity, and the other part of ash particles hit against a smoke separating wall I opposite to a flue gas inlet to settle to a plurality of ash settling funnels II; the settling hot flue gas sequentially passes through an intake channel I, a first convection bank, an inlet and outlet channel I, a second convection bank, an inlet and outlet channel II, a third convection bank and an outlet channel II to enable the hot flue gas to stall once more, and to settle to a plurality of ash settling funnels I; the settling hot flue gas directly enters a low-temperature denitrifying device; and after the nitrogen in the flue gas is removed, the processed flue gas enters a heat energy exchanging device, and after being cooled, the entered flue gas enters following equipment. The ash settling, denitrifying and cooling all-in-one machine disclosed by the invention has the effect that the heat exchange of a straw boiler is greatly improved; the abrasion of a pipeline of the straw boiler is reduced, so that during the process of heat exchange of the pipeline, the flue gas freely moves; and the atmospheric emission and the energy resource consumption are reduced, and besides, the material cost, the manufacturing cost, the mounting cost and the occupied space cost can be reduced.

An engine exhaust-driven heating device generates a high volume, steady stream of hot gas by passing an exhaust stream from a gasoline, propane, natural gas, or combustible fueled internal combustion engine through a catalyst that reduces the atmospheric emissions of the stream and liberates the energy of the pollutants in the stream. The device then combines the catalytic-treated air stream with a fresh air stream to further react with remaining pollutants and generate additional heat. The hot gas may be used to dry a variety of surfaces and, when integrated without other components typically found in surface drying equipment, provides an ideal system for use in a variety of moderate- to large-sized portable surface drying equipment. The heating device provides a reliable and continuous heat source and, when integrated into a controlled delivery system, dries the moisture from a surface faster and more effectively than prior art heating devices.

The invention relates to an integrated treatment device for removing PM2.5 and heavy metal particulate matter in exhaust gas. The integrated treatment device comprises a primary purifying device and a secondary purifying device. The primary purifying device comprises a purifying tank with the upper end opened, and a spraying device is arranged in the purifying tank. A wet-type electric dust remover is arranged in a dust removal cavity, and a first gas outlet is formed in the upper end of the dust removal cavity. The secondary purifying device comprises a purifying barrel with the upper end opened and a drainage gas hood with the upper end opened. The purifying barrel is filled with second absorption liquid, an inlet of the drainage gas hood is communicated with a first outlet pipeline, and the opening of the drainage gas hood is formed in the purifying barrel and located in the second absorption liquid. Based on wet-type dust removal, two stages of disposers are adopted in the device, the PM2.5 contained in the exhaust gas can be well removed while the heavy metal particulate matter of the exhaust gas is treated, and the technical support is provided for establishing the atmospheric emission standards of exhaust gas emission enterprises of the same kind.

The invention discloses a method for controlling the atmospheric emission loss of a fumigant on the basis of animal dung biochar in the field of environmental protection.The method particularly comprises the steps that the soil surface is covered with activated biochar, and then the fumigant is applied.According to the method, the soil surface is covered with the activated animal dung biochar before the fumigant is applied; by means of nucleophilic substitution and electron transfer mechanisms, the animal dung biochar can enable the fumigant adsorbed on surface of the biochar to be degraded, the animal dung biochar itself can serve as manure, and the risk of secondary pollution does not exist.The animal dung biochar has a strong catalytic degradation effect on the fumigant, and the problem that the fumigant volatilizes to the atmosphere can be essentially solved.

The invention provides an urban atmosphere emission list inversion method, system and device and a storage medium, and the method comprises the steps: obtaining an initial emission list of urban atmosphere, and building an air quality source analysis model based on a meteorological model; inputting the initial emission list into an air quality source analysis model for simulation so as to obtain PAMS concentration contribution, and combining PAMS emission in the initial emission list so as to obtain a coefficient relationship between the concentration and the emission; pAMS observation concentrations at multiple moments are obtained, and the optimal solution of the PAMS emission is obtained through inversion according to the least square method in combination with the coefficient relation; replacing the optimal solution of the emission amount into the emission list, and repeating the steps to obtain a corresponding PAMS simulation concentration; and when a preset condition is met, iteration is stopped so as to obtain the optimal solution of the final discharge amount of the PAMS. Compared with an existing emission list calculation method, the method has the advantages that as many as 57 PAMS substances of VOCs can be inverted; the number of stations needing observation is small, and only one piece of ground VOCs observation equipment is needed; and inversion areas and cities are not limited, so that the cost is relatively low.