Air pollution in industrial enterprises

Airborne pumps

basic principle of ventilation

Centrifugal exhaust veshilyatory

Determination of air exchange

dust control

Exhaust System

Forced ventilation on confectionery

Hourly values

mist of water vapor

pressure loss in the flare emissions

radioactive dust

scheme of the central pressure inlet system

Special prechamber

temperature gradient

Ventilation at bakeries

Ventilation in the Confectionery Factory

ventilation when dealing with heat


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Determination of volumes of air, remove local suction

Until relatively recently, in determining the amount removed by aspiration of air existed only departmental standards. The main drawback of all standards was recommended ones low volumes of air to be removed by aspiration.

In recent years, rates for foundries MIOTa, Giprotisa, Mekhanobr and Leningrad Promstroyproject for crushing and... read more >>

Common side pumps

Usual side pumps are widely distributed not only in the electroplating and pickling workshops on and in many other industries. They are used to locate hazards of thermal quenching tanks in the shops, the impregnating baths at various vacuum devices to periodically opening the lid, at smelters in the inability kapsyulyatsii, in the open.... read more >>

Consolidation aspiration systems

In an effort to enlargement of aspiration systems, some experts recommend the use of sewers, especially the horizontal ones. Proposed metal and even concrete sewers of any section with a tray underneath. Removal of settled dust in the collector is a scraper PLI by flushing with water.

Vertical collectors type shown in Fig. 23 apply... read more >>

Determination air in cabins

Determination of air in the cabin in which encapsulation particularly harmful equipment, the calculation can not be. Number of emitted pollutant, as a rule, is unknown. Allowable concentrations of harmful substances in cabin air is not regulated. In the case of separation of explosive gases and vapors is only necessary to ensure the impossibility... read more >>

Determination air when general ventilation

We now turn to the definition of air in the general ventilation. If you can not determine accurately the amount of emitted pollutant, but are known for their quality indicators, the only method for determining air is empirical: the designated multiplicity of knowing pomescheinya cubic content is calculated in air, using the computational... read more >>

Determination of air exchange

When mixed ventilation air in the room is usually dictated by local suction performance. Total extract, completed by local, usually no more than two-three times the exchange (according to the rules - at least one exchange). In exceptional cases - when a very large cubic space and unproductive local exhaust - exhaust general exchange prevails... read more >>

Determination of hazard to air exhausted

Defining the air when general ventilation should be established, whether the work proceeds engine more or less evenly over the estimated hours (say, 5 times for 2 min), or "concentration" (10 min for 1 h, the engine runs, and 50 min did not works). In the latter case, the concentration of carbon monoxide will be significantly changed by... read more >>

Determination of the number coming into the room gases

Determination of the number entering the premises of gases, vapors and aerosols with accuracy sufficient for practice is possible when the harmfulness of the product of a well-studied chemical reactions in the case of evaporation of the solvent in the room PLI evaporation from open surfaces. But in many branches of chemical technology, when... read more >>