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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required cooling technology products

Required cooling technology products are usually made forcibly blowing air supplied to the special supply plant with a mandatory cleaning from dust. Most of the air cooled artificially in the warm season, for the treatment of air conditioners installed special technology.

Table. 30 shows some data on the ventilation process. Listed... read more >>

Production of mineral pigments

Enterprises producing mineral pigments, are typical for chemical production of small scale. The largest of these establishments - plants producing titanium dioxide - is still in its scope can not be compared with the production of "great chemistry".

Despite the relatively modest size, manufacturers of pigments sometimes are more complex... read more >>

purge ventilation

In workshops, producing lead and chromium crown arranged purge ventilation. Heat is small, the room is usually heated, at least in the lower tier. Humidity these shops are only slightly damp. Supply air is supplied above the working area of each floor or tier-and partly in the work area in place of the least pollution. In the middle zone... read more >>

radioactive dust

Radioactive dust should be fully captured in all cases. In the sanitary rules work with radioactive substances is said that for the capture of radioactive aerosols must be carried out two-step purification of the extracted air. For the first-stage filters are generally recommended, and for the second - long staple fabric FPP. We now turn... read more >>

rate in outdoor air intake ducts

Air velocity in the outer suction channel is recommended in the range of 10 to 14 m / sec. At such speeds the pressure loss is relatively small, and the fan is stable. Energy consumption in the suction system is much smaller than at injection. If the device can not be a central inlet system, the contaminated gas and vapor atmosphere of... read more >>

reduction of mechanical noise

To reduce mechanical noise still needed the following activities:

1. In order to avoid transmission of vibrations through the air ducts should include a small soft box of canvas or rubber 50-100 mm in length between the fan and air ducts. No need to be made from an elastic material the entire cone of the fan. Soft Diffuser usually does... read more >>

Remove hazards from the vicinity of the upper thermal jets

Removal of harmful substances from the vicinity of the upper thermal jets or otherwise, it would seem, can reduce the need for air calculated by the allowable concentration in the working area. For ventilation on a "bottom - up," the concentration of harmful substances in the upper zone (ie, exhaust air) above, sometimes 1,5 times than in... read more >>