15 results about "Fugitive emissions" patented technology

Computer systems, methods, and apparatuses for estimating changes in gas emissions are described. A computer system can monitor overall emission levels based on sensor output from a plurality of gas sensors in a facility. The computer system can estimate a total emission level over a time interval based on accumulated gas response factor weighted detections of the plurality of gas sensors. Emissions in maintenance activities can be excluded as appropriate. The total emission level can be compared to estimated total emission levels for different time intervals and / or different facilities. The computer system can also be used to compare emissions across multiple facilities or to compare emissions of multiple facilities across multiple regions.

The invention relates to the technical field of railway transportation, in particular to a dust suppression device for cleaning bulk materials at the bottom of a car dumper, which provides a semi-closed dust control space for manual bottom cleaning operation through the open design of a dust suppression cover and the matching of the dust suppression cover and a chute for cleaning bulk materials at the bottom of the car, effectively prevents a large amount of visible dust generated in the material shoveling process from escaping outwards, and improves the working efficiency. And a plurality of groups of rotary sealing curtain mechanisms consisting of cross rods, rotating pieces and plastic door curtains are arranged in the device, can be pushed away when the bulk cargo door of the carriage is opened, and automatically droop and reset during operation intermittence, so that a dynamic sealing effect is formed, and the safety of the carriage is ensured. Meanwhile, the dry fog dust suppression mechanism arranged in the cover sprays out micron-sized water mist through a main pipe, a connecting pipe and an atomizing nozzle, the water mist is settled after being fully collided with suspended dust and bonded with the suspended dust, and therefore the concentration of dust on the periphery of the feeding port of the chute is remarkably reduced.

Methods and apparatus for fugitive emission detection. In some embodiments, the method can include planning and performing aerial inspections of a plurality of structures within one or more facilities by determining a flight path for a scanning of fugitive emissions from a plurality of structures within one or more facilities. The flight path can cover a set of structure clusters that can be serviced by a base. The method can also include using a computer-implemented clustering method to identify the set of structure clusters that can be serviced by the respective base. The clustering method can be a hierarchical multilevel clustering method. The method can also include scanning the plurality of structures for fugitive emissions using an airborne sensor. The airborne sensor can be mounted to a flight vehicle launched from the base. The method can also include classifying the plurality of structures based on results of the scanning.

The invention discloses a molten steel slag waste heat recovery system and a waste heat recovery method thereof.The molten steel slag waste heat recovery system comprises a slag tank, the tipping direction and angle of the slag tank are controlled through a slag tank tipping table, a slag sliding groove is formed in the tipping direction of the slag tank, and a waste heat recovery mechanism, a conveyor and a roller waste heat boiler are sequentially arranged at a discharging opening of the slag sliding groove; the steel slag treatment system is reasonable in design, the core problems that a traditional steel slag treatment process is poor in environmental protection property and heat of a high-temperature section is difficult to recover are solved in a targeted mode, the closed design is adopted in the system, the heat radiation plate is normally closed to be matched with the stepped heat collection plate, dust overflow and fugitive emission of dust-containing steam are avoided, and meanwhile, the heat recovery efficiency is improved. Three-section heat exchange is adopted, the high-temperature section to the medium-low-temperature section of the steel slag are covered, high-temperature heat which is not utilized in a traditional process is efficiently recycled, and the requirements for energy conservation, environmental protection and solid waste recycling are met.

A method and system for locating and quantifying fugitive gas emission leaks includes obtaining gas sensor data and wind direction data from a plurality of sensors and weather stations located proximate a given area of interest. The gas sensor data and the wind direction data is validated to remove erroneous values and to merge the gas sensor data with the wind direction data to provide time synchronized gas sensor data and wind direction data over a given time interval. The time synchronized gas sensor data and wind direction data is segmented for each gas sensor location into wind direction bins containing a concentration of the gas levels in each bin. The area of interest is divided into a grid of cells and the bins projected on the grid cells for each gas sensor location along with the level of gas contained in the bins. The grid cells are then grouped into one or more contiguous grid cells having gas levels above a predefined level and a boundary area is calculated containing the grid cells with a gas level above a threshold to identify a potential leak area. The potential leak area is matched with a prior calculated leak area to identify the source location of the emission leak.

Apparatus to prevent fugitive emissions in rotary valves are disclosed herein. An example apparatus includes a rotary valve including a valve body, a flow control member, and a valve shaft coupled to the flow control member. The apparatus also includes an actuator including a rod that is movable in a linear direction, and a mounting housing coupled between the rotary valve and the actuator. The valve shaft and the rod extend into the mounting housing. The apparatus includes a linkage to convert linear motion of the rod to rotary motion of the valve shaft. The apparatus system also includes a bellows disposed around a portion of the rod in the mounting housing. The bellows is coupled to the rod and the mounting housing to prevent fugitive emissions from the mounting housing.

A measurement equipment for measuring gases and environmental parameters, made up of sensors (4) for measuring the parameters that influence air quality, odors, leak detection, fugitive emissions, pollutants, the presence of certain gases in the atmosphere, etc., having a housing (1) configured to incorporate removable cartridges (3) in which sensors (4) are housed, associated in an assembly unit with respective specific electronic boards (5) which are connected to a central electronic board (6) arranged in the housing (1) that recognizes the sensors (4). A cartridge (3) configured to be coupled to the measurement equipment for measuring gases and environmental parameters.

The invention relates to a painting device and a painting method of a horizontal flat wire enamelling machine, and belongs to the technical field of enameled wire production. According to the technical scheme, a paint return box is arranged below a paint return channel below a mounting plate, the bottom of the paint return box is an inverted-V-shaped bottom, and a first paint return pipe and a second paint return pipe are arranged on the two sides of the paint return box respectively and connected with a paint adding valve set; the painting box is arranged on the mounting plate, the first paint liquid cover plate, the second paint liquid cover plate, the mold frame and the painting mold are covered with the painting box, the painting box and the paint returning box are both tightly connected with the mounting plate, and a closed structure is integrally formed. The device has the beneficial effects that the whole structure is compact and environmentally friendly, adjustment and use are convenient, energy consumption is reduced, and the pollution risk in the circulation process is reduced; the compact and flexible painting mold frame and the relatively closed paint return box design structure solve the problems of long paint liquid exposure time, large paint return amount, prominent workshop inorganized emission and the like in the production process of the enameled flat wire.

The invention discloses equipment for producing high-strength steel through thin-strip cast rolling and a production process, and belongs to the technical field of metal material machining. The following functional units of a thin strip continuous casting unit, a sealing secondary cooling and guiding unit, an on-line hot rolling unit, an on-line mechanical descaling and surface treatment unit, a first finishing and hot coiling unit, an inlet buffering and connecting unit and an on-line cold rolling unit are sequentially arranged in series in the advancing direction of the equipment. The online slinging and descaling unit is adopted to completely replace a traditional hydrochloric acid pickling process, oxide scales on the surface of strip steel are removed in a physical and mechanical mode, and the problems of unorganized discharge of acid mist, generation of waste acid liquor and subsequent expensive treatment of the acid mist are completely eradicated from the source; the production site is environment-friendly, zero generation of waste water and waste gas pollution is realized, inherent quality defect risks such as hydrogen embrittlement, over-pickling / under-pickling and the like in the pickling process are thoroughly avoided, and the intrinsic safety and quality consistency of the product are improved.

A method includes determining where to place one or more devices at a site. Each device includes a first sensor configured to measure a concentration of a greenhouse gas (GHG). The method also includes measuring the concentration of the GHG with the first sensors. The method also includes quantifying a rate that the GHG is emitted based at least partially upon the measured concentration of the GHG. The method also includes determining a location of a GHG-emitting source at the site that is emitting the GHG that is measured by the first sensors. The location is determined based at least partially upon the measured concentration, the quantified rate, or both. The method also includes identifying the GHG-emitting source at the determined location by comparing the determined location with a list of a plurality of GHG-emitting sources at the site and locations thereof.

This utility model discloses a material level detection and early warning device for an annular cooler unloading trough, comprising: an annular cooler, an unloading trough, and a control system. A discharge port is provided at the bottom of the unloading trough; several support seats are provided on both sides of the unloading trough; a weight detection module is provided at the bottom of each support seat; material level detection modules are provided at both ends of the unloading trough; a trough top sealing module is provided at the top of the unloading trough, and a material layer height detection module is provided on the trough top sealing module; the weight detection module, material level detection module, and material layer height detection module are all connected to the control system. This device can continuously detect the weight of sintered ore in the unloading trough, detect the high and low material levels in the unloading trough, continuously detect the soft seal at the top of the unloading trough, and continuously detect the material layer height inside the unloading trough, avoiding errors and misjudgments that may occur with a single detection method, enhancing detection accuracy, reducing fugitive emissions, and improving the working environment.

Disclosed herein is an apparatus for preventing diffusive emissions in a rotary valve. An example apparatus includes a rotary valve including a valve body, a flow control member, and a valve shaft coupled to the flow control member. The apparatus also includes an actuator including a rod movable in a linear direction, and a mounting housing coupled between the rotary valve and the actuator. The valve shaft and the rod extend into the mounting housing. The device also includes a connecting rod to convert linear motion of the rod into rotational motion of the valve shaft. The apparatus also includes a bellows disposed around a portion of the rod in the mounting housing. A bellows is coupled to the rod and the mounting housing to prevent diffusive discharge from the mounting housing.

This invention discloses a method for monitoring and flux calculation of fugitive emission sources from industrial enterprises, relating to the field of fugitive emission monitoring of gaseous pollutants. The method includes: investigating the target industrial enterprise and collecting relevant data on its fugitive emissions; determining and implementing a monitoring plan for the target industrial enterprise based on the fugitive emission data and preset monitoring rules; performing data conversion and statistical analysis on the monitoring results; and calculating the fugitive emission source strength of the target industrial enterprise based on the statistical analysis results. This invention obtains the fugitive emission source strength of industrial enterprises based on the "investigation-monitoring-statistics-calculation" method, which is less affected by wind speed and direction and has accurate measurement characteristics. It can be used to correct the unit product emission factor of such industrial enterprises in the process of calculating the emission amount of target pollutants using the emission inventory method, providing a scientific basis for local environmental protection departments to achieve the goal of precise control of fugitive emission sources from industrial enterprises.

The invention belongs to the technical field of anode storage and transportation in electrolytic workshops, and particularly relates to an electrolytic anode waste heat recycling storage process and device.The electrolytic anode waste heat recycling storage process comprises the following steps that a new anode is fed into a storage room through a new anode inlet and stored on a new anode preheating platform through a new anode conveying device; preheating the new anode by using the waste heat released by the out-of-tank anode on the anode scrap waste heat recovery platform adjacently arranged on the new anode preheating platform; when the anodes of the electrolytic cell are replaced, the preheated new anodes are transferred to the cell inlet position of the electrolytic cell, and meanwhile the replaced cell outlet anodes are transferred to an anode scrap waste heat recovery platform; the flue gas waste heat comprehensive utilization device is used for recovering waste heat and flue gas of the tank anode, the recovered waste heat is used for preheating a new anode, and then the cooled anode scrap is sent to a crushing process. The system has the advantages that the waste heat utilization rate is increased, the transportation energy consumption is reduced, the fugitive emission of flue gas is reduced, and closed-loop utilization of heat energy is realized.

The invention provides an unorganized emission online monitoring method and system based on edge calculation, and relates to the technical field of environment monitoring, and the method comprises the steps: obtaining emission feature data of distributed sensing nodes, building an inter-node adjacency relation, carrying out the space-time dimension feature extraction, determining an abnormal score, and carrying out the detection of the abnormal score; and an emission source candidate position is searched based on actually measured concentration distribution and an emission state evaluation result, high and low frequency components are extracted through wavelet decomposition to analyze emission characteristics, an influence range boundary is determined in combination with meteorological parameters, and an emission early warning signal and a traceability positioning result are generated. Accurate monitoring, traceability positioning and early warning of unorganized emission are realized, and the environmental monitoring efficiency is improved.