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#230 Measures for Organic Solvents

Category : Environmental conservation
March11, 2016

Because organic solvents are used in surface treatments including metal cleaning and painting, the employers are required to protect their employees under the provisions of the Ordinance on Prevention of Organic Solvent Poisoning. In addition, a leakage of organic solvents outside of the plant could cause troubles with the neighborhood due to its odor and health risks.

To prevent such incidents, the following steps have been adopted:

1. Use an appropriate hood to enclose the area where organic solvents are handled. Then, vacuum up by ventilation equipment.(local ventilation)
2. Use an activated carbon filter to absorb and remove organic solvents.
3. Discharge the absorbed air to the outside.

[Table 1] shows the capture velocity of local ventilation equipment. [Table 2] shows the required ventilation volume. In addition, [Fig. 1] illustrates the absorption and desorption processes of activated carbon absorption equipment.

[Table 1] Capture velocity of local ventilation equipment
Model/Type Capture velocity (m/s)
Enclosure 0.4
External Side suction 0.5
Bottom suction 0.5
Top suction 1.0

[Table 2] Required ventilation volume for ventilation equipment
Organic solvent categories Ventilation volume (m3/min)
Type 1 organic solvent (e.g. trichloroethylene) 0.3w
Type 2 organic solvent (e.g. perchloroethylene) 0.04w
Type 3 organic solvent (e.g. petroleum solvent) 0.01w

Fig

MISUMI USA eCatalog