3 A Papermachine Steam Systems Part1

[object Object],[object Object],Energy Management Seminar , Ho Chi Minh City, May 2008

PAPER INDUSTRY ,[object Object],[object Object],[object Object],[object Object]

CLASSIFICATION ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],IN PAPER MILLS

TERMINOLOGY ,[object Object],[object Object],IN PAPER MILLS Paper Type GSM Tissue/Towels 9-40 Newsprint 45-48 Writing Printing 40-80 Kraft 90-220 Board Paper 200-600

TERMINOLOGY ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],IN PAPER MILLS

TERMINOLOGY ,[object Object],Rate at which water is removed from dryer per unit area per hour = ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],IN PAPER MILLS

TERMINOLOGY ,[object Object],[object Object],IN PAPER MILLS Paper Quality DR – Kg/hr-m 2 Tissue 20 Writing Printing 18-20 Craft 15-20 Newsprint 20-25

TERMINOLOGY ,[object Object],IN PAPER MILLS Specific Steam Consumption Kg of Steam -------------------------------- Kg of water Evaporated Kg of Steam -------------------------------- Kg of Paper Drawn Theoretical Approach Practical Approach

TERMINOLOGY ,[object Object],[object Object],[object Object],[object Object],[object Object],IN PAPER MILLS Kg of Steam Kg of Water Evaporated 2) Kg of Steam Kg of Paper Drawn * Values are for reference only Depends on moisture 1) Newsprint 1.8-1.9 * Wr/Pr 1.6-1.9 * Kraft 1.75-1.9 * Paper Board 2.1-2.3 * Tissue 2.5-2.6 *

FORMULAE ,[object Object],M evap M prod = D exit D enter - 1 … M evap = Kg of moisture evaporated per unit time … M prod = Kg of paper produced per unit time … D exit = Dryness at the exit of machine … D enter = Dryness at entry of machine IN PAPER MILLS

STEAM & CONDENSATE SYSTEM ,[object Object],[object Object],[object Object],[object Object],IN PAPER MILLS

[object Object],[object Object],STEAM & CONDENSATE SYSTEM IN PAPER MILLS

STEAM & CONDENSATE SYSTEM Conventional Trap Based System IN PAPER MILLS

STEAM & CONDENSATE SYSTEM ,[object Object],[object Object],[object Object],[object Object],[object Object],IN PAPER MILLS

[object Object],[object Object],[object Object],STEAM & CONDENSATE SYSTEM IN PAPER MILLS

STEAM & CONDENSATE SYSTEM Cascade System IN PAPER MILLS

[object Object],[object Object],[object Object],[object Object],STEAM & CONDENSATE SYSTEM IN PAPER MILLS

STEAM & CONDENSATE SYSTEM Thermocompressor based Blow thru system IN PAPER MILLS

[object Object],[object Object],[object Object],[object Object],[object Object],STEAM & CONDENSATE SYSTEM IN PAPER MILLS

STEAM & CONDENSATE SYSTEM ,[object Object],IN PAPER MILLS Speed Range Recommended System 150-250 Trap Based 250-650 TC based Blow Thru >650 TC based Blow Thru

[object Object],IN PAPER MILLS

ROTARY JOINTS ,[object Object],[object Object],[object Object],IN PAPER MILLS

ROTARY JOINT ,[object Object],IN PAPER MILLS RRJ – For rotary syphon SRJ – For stationary syphon

ROTARY JOINT ,[object Object],IN PAPER MILLS

SYPHON ,[object Object],[object Object],[object Object],[object Object],IN PAPER MILLS

SYPHONS ,[object Object],IN PAPER MILLS

SYPHONS ,[object Object],Syphon Shoe Profile IN PAPER MILLS

SYPHONS ,[object Object],IN PAPER MILLS Syphon type Low speed Stationary Rotary High speed Stationary Speed range (mpm) 150-250 250-650 >650 Clearance (mm) 10 – 12 1.5 – 3.0 3.0-5.0

3 A Papermachine Steam Systems Part1

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3 A Papermachine Steam Systems Part1