Browse Prior Art Database

In-Line Solvent/Water Separation System

IP.com Disclosure Number: IPCOM000040040D
Original Publication Date: 1987-Sep-01
Included in the Prior Art Database: 2005-Feb-01
Document File: 2 page(s) / 73K

Publishing Venue

IBM

Related People

Janssen, DM: AUTHOR [+4]

Abstract

In an electrophotographic copier/printer utilizing a solvent vapor fusing process, control of the solvents used or generated is important for environmental, safety and economic considerations. A process is described which accepts two output streams from a vapor fuser, and provides separation, recovery and safe disposal of the solvents. Fig. 1 discloses a solvent/water separator for a vapor fuser construction which utilizes an 89% FREON*/11% acetone solvent. This separator can be used with similar solvent-fusing systems involving solvents immiscible with water. The nature of the two inlet streams A and B to the separator is determined by the operational mode of the vapor fuser.

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In-Line Solvent/Water Separation System

In an electrophotographic copier/printer utilizing a solvent vapor fusing process, control of the solvents used or generated is important for environmental, safety and economic considerations. A process is described which accepts two output streams from a vapor fuser, and provides separation, recovery and safe disposal of the solvents. Fig. 1 discloses a solvent/water separator for a vapor fuser construction which utilizes an 89% FREON*/11% acetone solvent. This separator can be used with similar solvent-fusing systems involving solvents immiscible with water. The nature of the two inlet streams A and B to the separator is determined by the operational mode of the vapor fuser. In this implementation, stream A consists of predominantly FREON (as an example, 98% FREON/2% water) and is produced during the normal fusing operation, whereas stream B consists of predominantly water (as an example, 98% water/2% FREON) and is produced during the fuser's defrost cycle.

(Image Omitted)

It is understood that the acetone is distributed in the above streams in various amounts depending on the distribution coefficients. As either steam A or stream B enters the separator, it is diverted by flow divertor valve 11 (seen in detail in Fig. 2) into one of two different portions of the separator for processing. Flow divertor valve 11 consists of valve body 12 having an inlet port 13 and two exit ports 14 and 15. Free floating piston 16 includes bleed passages 17 and 18 formed therein. This valve operates on the principle of different specific gravities (where sp.gr.FREON > sp.gr. piston > sp.gr.water). For example, as stream B (high water content/ low FREON content) enters valve 11, the density bal...