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Guide for vessel Guide for Vessel Sizing Certi ?ed DATE ID NO var www apps conversion tmp scratch doc DESCRIPTION of DOC NO CTable of Contents Scope Introduction Selection Criteria for Vapor-Liquid Separators Orientation of the Vessel Feed Inlet Inlet Noz

Guide for Vessel Sizing Certi ?ed DATE ID NO var www apps conversion tmp scratch doc DESCRIPTION of DOC NO CTable of Contents Scope Introduction Selection Criteria for Vapor-Liquid Separators Orientation of the Vessel Feed Inlet Inlet Nozzle Inlet device Internals Vessel Head Design Criteria for Vapor Liquid Separators De ?nition of Levels Vertical Vessels Diameter of a Vertical Vessel Height of a Vertical Vessel Horizontal Vessels Size of a Horizontal Vessel Feed Inlet Device for Horizontal Vessels Either a ? elbow or a half-open pipe can be used as inlet device for a horizontal vessel A ? elbow is preferred as they are easier to fabricate The following requirements are applicable for ? elbow inlets The diameter of the elbow must be the same as the nozzle diameter Boot Additional Criteria Degassing Foaming Sizing of Nozzles Feed Inlet Nozzle Vapor Outlet Nozzle Liquid Outlet Nozzle Manway Vents and Drains Nozzle Identi ?cation Mist Eliminators Sizing of Demister Pads Demister in Vertical Vapor Liquid Separators Design of Liquid Liquid Separators Liquid-Filled Separators Liquid-Liquid Separators with Vapor Compartment ID NO DOC var www apps conversion tmp scratch doc of C Computer Programs Depsep Separator Excel Functions Horizontal Vessel Liquid Volume Horizontal Vessel Liquid Level Vertical Vessel Liquid Volume Vertical Vessel Liquid Level Segmental Area from Elevation Appendices Scope This document shall be used for the process design of vessels however for speci ?c projects these design rules may be superseded or modi ?ed by client requirements Applicable design rules for a speci ?c project shall be speci ?ed in the Design Basis and or the General Information and Instructions GII for the project Introduction In general the function of a vessel in a process unit is to either provide hold- up time or to make a separation between the various phases of a mixed process stream In this design guide rules are given for the dimensioning of vessels which are used for the separation of mixed process streams They can be divided into two categories Vapor liquid separators which are used to separate the vapor and liquid part of a mixed stream Liquid liquid separators which are used to separate the two liquid phases of a mixed stream ID NO var www apps conversion tmp scratch doc DOC of CFor both types of separators the design rules will be given in this design guide Selection Criteria for Vapor-Liquid Separators The con ?guration of a vapor liquid separator depends on a number of factors Before making a vessel design one has to decide on the con ?guration of the vessel with respect to among others Orientation Type of feed inlet Type of internals Type of heads Factors that help to make the chioce between the various alternatives are discussed in this chapter Orientation of the Vessel The selection of the orientation of a gas-liquid separator depends on several factors Both vertical and horizontal vessels have their advantages Depending on the application one has to decide on the best choice between the alternatives