Pulp and Paper Technical Association of Canada/TAPPI Bleaching Committee Joint Meeting

• working with Paprican on a project on oxygen delignificaion trying to understand why we can get 50% delignification in the lab, but not in the field
  

• installed Praxair VSA plant 45 tpd , on-line mid January
  

• trying to get filler levels up in the paper
  
• working with ICI on trying to get improved yield
  
• high kappa pulping to get yield increase, have not seen any increase on aspen yet
  
• anaerobic treatment of condensates getting methane gas - trial
  

• dissolving Kraft pulp mills (3 in US)
  
• now designing Eop stage, on-line next year
  
• #1 mill trials at 50% substitution , 1999 (first in dissolving Kraft industry
  
• working with Florida State Government to spend $40 million to run effluent pipeline 18.5 miles, will treat with oxygen at end of the pipe in the Gulf of Mexico
  

• will reach ISO 14000 by October/97
  
• developing market for bleached sack Kraft
  
• run both mills using 5 self directed work teams
  

• new chip thickness screening system including chip conditioner last year, running well
  
• started up a tall oil plant
  
• reducing AQ with surfactant in the digester - trial
  
• high temperature enzyme trials
  
• ISO 14000 may be complete by end of year
  

• initiated a corrosion monitoring program in digester
  
• Do Ahlmix MC mixer
  
• will install new washer in Eop position
  
• chemical program to control scale in Eop position
  

• Pensacola negotiations continue with Florida State Government for a consent order (permit)
  
• both Pensacola lines converted to ECF
  
• Canton mill BFR program going well - getting the last 100 USG is the most difficult because of overall balance in the system, but have had days with 100% closure, had some tank linings fail
  

• started on steel work in new plant in Quebec City
  
• hired sales and technical people for Quebec
  

• cost reduction thrust, especially energy
  
• ClO2 heat exchangers
  
• reusing more water in process
  
• Paprican modelling Do stage control
  
• looking at adding peroxide to last stage
  

• approval for $5.7 million for DCS control on digester
  
• new brightness and residual sensors on third stage
  
• running CO2 on brownstock washer for two years now
  
• AQ trial for 4 months, but plugged extraction zone on digester
  
• low solids cooking trial fall/97
  

• low salt caustic production in Saskatchewan - membrane technology
  

• HW modernization project over two years
  
• increased RB capacity - went from two air levels to 4 air levels on CE boiler
  
• new BS washers, new knots screens, oxygen wash presses
  
• next September ozone MC bleaching, new compaction baffle filter washers in bleach plant (ZD sequence)
  

• bleach plant costs on DCS so operators can minimize cost
  
• kappa analyser starting up
  
• September - 2 stage oxygen delignification in bleach plant DoOPDEpD
  

• FCCL splitting into 2 companies - PulpCo and PaperCo
  
• implemented operating teams responsible for operations/maintenance/process/engineering by area
  
• new M&D digester and DD washer running well
  
• installing 5 MC pumps and 2 MC mixers in 1997
  
• FCCL is the target company for the BC union negotiations (again)
  

• restructured into operating teams
  
• presently the beta site for Honeywell's new supervisory control package
  
• #3 M&D digester in Sept total 700 tpd sawdust pulp
  
• Beloit knotter, D1 washer drum replaced SMO with FRP
  
• Kajaani on-line fibre analyser
  
• purchased a new tertiary screen, after 3 weeks bottom blew out, found manufacturers defect, no one hurt
  

• building an Indonesian mill, Kalimantan, 1500 tpd
  

• started up second mini-oxygen - Nov/96
  
• started up second Eop filtrate vent scrubber - May/97
  
• started thickness screens and conditioner
  
• steam shower on pulp machine - first on a pulp machine
  
• rebuild of small recovery boiler later in 1997
  
• replacing anhydrous ammonia in secondary treatment - safety issue for BC Ferries
  

• interest in simplified bleaching by three stage mills in US
  

• new Corrudec on Do
  
• changes in June - new CD scanner on pulp machine, layboy changes
  
• ISO 14000 this year
  
• flow and consistency measurements out of all towers - justified because of grade changes every two days
  
• replaced steaming vessel - high chlorides in wood chips caused severs cracking after 6 years - went for carbon steel with stainless steel lining
  

• $30 million expansion on chloralkali plant - added 10%-15%
  
• joint research work on aspen
  
• AQ in low solids pulping with Ahlstrom
  

• trials on small gas mixers
  

• new steam mixer, TSP and chemical mixer
  
• converted from methanol to peroxide in ClO2 generator for BOD reduction
  
• considering reverse osmosis on foul condensates for BOD reduction
  
• CO2 addition trial
  
• beta test site for Honeywell for advanced/advanced controls
  

• 606 days no LTA (1.6 yrs)
  
• record productions in March and April
  
• new evap steam stripper in Fall
  
• new DCS in digester complete in February/97
  

• Chemrec recovery booster started in New Burn NC (Weyerhauser) 750,000 OD lbs/d
  

• looked at yield from 15 to 40 k number - measurable increase in the lab
  
• evaluated effect of temperature and time on ClO2 consumption in an acid wash stage
  

• 10% increase in production of sulphuric at PG
  

• bleaching changes - October/96 ECF
  

• new name, but won't know what it is until June 1
  

• mini oxygen and closed wash system for 4 months, not yet seeing the benefit due to poor washing, limited temperature, and tramp water
  
• started up demineralizers, hardness now less than 50 ppb
  
• margin improvement program - reduce $80 million company wide ($40 million from mill) per year
  
• ISO 14000 in 1997
  

• moving paper machine, so more space available for other projects
  
• electrochemical an bleaching projects being expanded
  

• superbatch started January
  
• good quality, but severe evaporator problems with berkite fouling (overloaded liquor system), also calcium carbonate scaling problem, suspect that as you impregnate chips in superbatch it solublizes calcium in the chips, since no high temp will not precipitate until it gets to the evaporators, so form calcium carbonate on the tubes - tough problem
  

• changed from 4 sstage to 3 stage bleaching by eliminating hypo stage
  
• now 70%, going to 100% DcEpD
  

• swapped some bleach washers out - Do now SMO, this summer putting in Corrudec 3, upgrading first oxygen mixer to ahlmix
  
• had trouble with Douglas fir - peroxide after chlorine dioxide helped gain brightness 1 lb peroxide to 3 lbs ClO2
  
• stainless j tube in fourth stage
  
• DCS on recaust
  
• Monox-L

• cost reduction program focusing on chemicals
  
• starting glow solids cooking in July
  
• increase mill production to 200,000 by 1999 (now 400 tpd)
  

• new process for metal management out this year to help facilitate mill closure SOLV-X process
  

• Valdosta chlorate plant now open - 11,000 tpy
  
• 7 new ClO2 generators this year (6 R8, 1 R5)
  

• new seventh batch digester construction started
  
• ISO 9002 this year
  
• next month new name Abitibi Consolidated
  

• ozone generation and bleaching at Consolidated
  

• starting 2 cryo plants shortly
  
• converting methanol based ClO2 to peroxide
  
• now have 4 of 5 bleach lines with oxygen, fifth will be this year
  
• all 5 bleach plants going to ECF
  
• working on full strength, full bright TCF sequence - not yet in operation
  

• 1997 Pulp and Paper Technical Association of Canada - new bleaching sensors out
  
• kappa analyser now can measure brightness
  
• opening service centre in Moncton
  
• 70% of business is from Asia - indication of where business is coming from
  

• $10 million chip screening system this fall
  
• Corrudec drums in brownstock
  
• degassers in pressure washers
  
• supervisory control on digester
  
• magnetic scale removal on digester
  
• on line kappa analyser
  

• started pressurized Eop 5kg p, 5 kg oxygen, 95C 350 kPa Kvaerner
  
• DoEopD
  

• wrapping up modernization project
  
• ahlstrom pressure filter white liquor - July
  
• Do to MC - September
  
• new brown HiD - September
• new falling film evaporator - September
  
• Beloit O2 delignification, 2 stage washing, 2 reactors - November/97
  
• dregs filter fall/96 - "special waste" is an ongoing problem in BC since pH must be <12.5 to be on highway, new filter has helped
  
• new ball mill for grits so they can be fed back to dregs filter
  

• Environmental license negotiations underway for 10 year permit - colour is an issue, so beginning feasibility study for oxygen delignification installation
  
• became ISO 9002 certified this spring
  
• new chip thickness screening and conditioning installed this spring
  
• last year started up a chlorate pipeline from neighbouring chlorate plant, so no handling problems - great partnership effort
  
• AQ trial this summer - yield driven
  
• optimising chemical usage in bleach plant
  

• 5 bleach plants, by end of October will convert all mills to ECF