Continuous improvement

Capital Driven

2003 Zhuhai #1 500 ktepa

1st Generation of step-out technology to reduce capital costs ($/ktepa), water usage, solid waste, and land use (m2/ktepa) by 25%, 75%, 40%, and 17%, respectively as compared to prior generation PTA technology1.

Key technology features

  • Proprietary solvent exchange
  • Proprietary pressure filtration
  • High pressure distillation with partial condensation
  • PTA water recycle
  • Close coupling

Variable Cost Driven (leveraging capital through scale)

2008 Zhuhai #2 900 ktepa

Competitive capital and variable cost single train PTA plant. Capital cost ($/ktepa), variable cost, greenhouse gas, solid waste and land use (m2/ktepa) were reduced by 40%, 44%, 50%, 90%, and 60%, respectively as compared to BP’s Zhuhai #1 PTA unit in China1.

Key Technology Features

  • Full internal water recycle
  • Direct steam generation from DHT vent with full condensation
  • Optimized reaction
  • Reverse osmosis

2015 Zhuhai #3 1250 ktepa

Further improved capital and variable cost single train PTA plant. Capital cost ($/ktepa), variable cost, greenhouse gas, and land use (m2/ktepa) were reduced by 17%, 33%, 30%, and 16%, respectively as compared to BP’s Zhuhai #2 PTA unit in China1.

Key Technology Features

  • Increased power generation from heat integration of low temperature sources
  • Drive to single train scale limits

2016 BP PTA+ 1250 ktepa

Key Technology Features

  • Larger reactor
  • Lower severity reaction
  • Improved reverse osmosis
  • Heat integration
  • Low pressure vent gas treatment

Scale (Capital) Driven

2017 BP PTA+ Mega 2500 ktepa

Key Technology Features

  • Minimize capital by doubling capacity using a single train where possible
  • New operating philosophy
1. Derived from BP project costs on Zhuhai #1, Zhuhai #2, and Zhuhai #3 and actual operating data from BP’s PTA manufacturing facilities.