Compressors

The standard for compressors requires (1) using mechanical seals equipped with a barrier fluid system and control degassing vents or (2) enclosing the compressor seal area and venting emissions through a closed-vent system to a control device. These systems provide control efficiencies approaching 100% (Colyer and Mayer 1991).

Most concepts to control fugitive emissions from pumps

Possible leak into sealing fluid

Seal liquid Seal liquid out (top) in (bottom)

Possible leak into sealing fluid

Gland plate

Primary seal

Secondary seal

Gland plate

Primary seal

Secondary seal

Seal liquid out in (top) (bottom)

Fluid end

Seal liquid out in (top) (bottom)

Fluid end

Gland plate

Primary seal

Secondary seal

FIG. 5.24.5 Two arrangements of dual mechanical pump seals. (A) Back-to-back arrangement; (B) tandem arrangement (Reprinted from U.S. EPA, 1984).

Gland plate

Primary seal

Secondary seal

FIG. 5.24.5 Two arrangements of dual mechanical pump seals. (A) Back-to-back arrangement; (B) tandem arrangement (Reprinted from U.S. EPA, 1984).

apply to compressors. Likewise, analyzing the vibration characteristics anticipates pending problems.

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