Browse Prior Art Database

FUGITIVE EMISSIONS RECOVERY SYSTEM

IP.com Disclosure Number: IPCOM000027384D
Original Publication Date: 1996-Aug-31
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 109K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is a manifolded system that collects volatile solvent emissions and directs them to either the mainline solvent recovery system or to separate subsystem when the mainline system is off line. As regulations governing fugitive emissions become more stringent, systems are required to capture these emissions. Fugitive emissions are defined as being emissions of short duration. These emissions typically come from the venting of tanks vessels and drains. Emissions generally occur when these tanks or vessels are being filed or drained. Venting is required in order to displace headspace air when the tank is filling, or supply headspace air when the tank is emptying. On vessels containing low boiling solvents such as methylene chloride, vents are also added to relieve vapor pressure build up when the environment in which they are stored approaches its boiling point.

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XEROX DISCLOSURE JOURNAL

FUGITIVE EMISSIONS RECOVERY SYSTEM
John J. Darcy
Edouard E. Langlois

Proposed Classification
U. S. C1.430/059 Int. C1. G03g 05/06

Disclosed is a manifolded system that collects volatile solvent emissions and directs them to either the mainline solvent recovery system or to separate subsystem when the mainline system is off line.

As regulations governing fugitive emissions become more stringent, systems are required to capture these emissions. Fugitive emissions are defined as being emissions of short duration. These emissions typically come from the venting of tanks vessels and drains. Emissions generally occur when these tanks or vessels are being filed or drained. Venting is required in order to displace headspace air when the tank is filling, or supply headspace air when the tank is emptying. On vessels containing low boiling solvents such as methylene chloride, vents are also added to relieve vapor pressure build up when the environment in which they are stored approaches its boiling point.

Over a period of time, and with the large number of tanks and vessels, such emissions are considerable and the amount of solvent exhausted into the environment is undesirable.

The proposed system is designed to capture substantially all fugitive emissions being exhausted from all mix vessels, waste holding tanks, solvent abatement equipment, solvent reclaim equipment, storage tanks, and the like.

The system separates these emissions into two exhaust streams. One stream is highly flammable, and the other stream is low or non-flammable. These streams are then manifolded and sent to a small carbon absorber dedicated to that stream, or to the large solvent abatement system.

When the solvent abatement system is not on line, the fugitive emission exhaust streams are directed to small carbon absorbers....