What Are Fugitive Emissions?

Refers to the unorganized and intermittent discharge in the non-closed process. In the process of production material preparation, process reaction, product distillation, extraction, crystallization, drying, and discharge, the pollutants are injected and reacted through production. , Separation, purification and other unit operation processes, which escape to the atmosphere through evaporation, flash evaporation, purge, replacement, spraying, coating, etc., are fugitive emissions under normal operating conditions.

Fugitive emissions

Right!

Refers to the unorganized and intermittent discharge in the non-closed process. In the process of production material preparation, process reaction, product distillation, extraction, crystallization, drying, and discharge, the pollutants are injected and reacted through production. , Separation, purification and other unit operation processes, which escape to the atmosphere through evaporation, flash evaporation, purge, replacement, spraying, coating, etc., are fugitive emissions under normal operating conditions.

Chinese name

Fugitive emissions

Nature

emission

Attributes

Unorganized

atmospheric pollutant

Irregular discharge without passing through the exhaust cylinder

Emissions from low exhaust cylinders are organized emissions, but under certain conditions can also have the same consequences as fugitive emissions. Therefore, the increase in pollutant concentration at the monitoring points caused by the low exhaust cylinders will not be deducted when implementing the fouling emission monitoring concentration limit indicator. (GB16297-1996 comprehensive emission standards for air pollutants)

Usually includes area, line and point sources. For example, scattered materials such as coal, clay, limestone, and paint on the surface are open-source non-organic emissions; the discharge of contaminated dust from a car when driving on a road with loose materials is a line source pollution; The amount of dust generated by the bulk material during the drop in the loading mechanism of the automobile and the dust pollution emission during the unloading of the automobile are all point-type fugitive emission sources.

The key technologies of fugitive emission source control include BME comprehensive dust suppression technology and grain industry transfer terminal dust removal system equipment technology.

Comprehensive dust suppression technology

It mainly includes key technologies such as bio-nano film dust suppression technology, cloud dust suppression technology and wet dust collection technology.

Bio-nano-membrane dust suppression technology, bio-nano-membrane is a double-ionization layer with nano-layer spacing, which can maximize the ductility of water molecules and has strong charge adsorption; spraying the bio-nano film on the surface of materials can Attract and agglomerate small particles of dust, aggregate them into large particles, increase their weight and settle; the dust removal rate of this technology can reach more than 99%, and the average operating cost is 0.05 ~ 0.5 yuan / ton.

Cloud mist suppression technology is through high-pressure ion atomization and ultrasonic atomization, which can produce ultra-fine dry mist of 1m ~ 100m; ultra-fine dry mist particles are dense, which fully increases the contact area with dust particles. Water mist particles and dust particles collide and Aggregates to form agglomerates. The agglomerates become larger and heavier until they finally settle naturally to achieve the purpose of eliminating dust. The dry fog particles produced have a particle size of 30% to 40% below 2.5 m, which pollutes the fine particles of the atmosphere. Control effect is obvious.

Wet dust collection technology absorbs dust-adhered air through pressure drop, and removes dust under the dual effects of centrifugal force and the mixing of water and dust gas; key designs such as unique impellers can provide higher dust removal efficiency.

It is suitable for the production, processing, transportation, loading and unloading of bulk materials, such as mines, construction, quarries, storage yards, ports, thermal power plants, iron and steel plants, and garbage recycling.

Equipment and technology for dust removal system of transfer terminal in grain industry

The dust removal system controls the reception of bulk grain at the dock, distribution of bulk grain at the dock, distribution of bulk grain in the silo, bulk grain into the fumigation bin, fumigation bin bulk grain distribution, and bulk grain into the bunker. The leakage of dust at the material point or transfer point ensures that the operating environment around the bulk grain conveying equipment meets environmental protection and occupational health requirements.

Suitable for the food industry. ^[1-2]