pecs Process Engineering and Consulting Services
 
Case History

Degassing and Foam Abatement

case history 1

Project scope
- Improvement of gas separation from organic liquid saturated in gas during expansion to atmospheric pressure
- Plant bottle neck

PECS scope
- Basic investigation
- Experimental equipment conception, procurement and construction
- Experimental work
- Result interpretation and Phenomena modelling
- Industrial equipment design
- Assistance to industrial application

Research and engineering
- 1 month of scientific investigation and reflexions
- Pilot plant commissioned in 3 months
- 2 months of tests
- 1 month for modelling and approval
- 1 month of equipment design

Industrial Results
- Existing degasser replacement 8 months for construction and erection / ˜1 MEUR
- Performance: 3 days for start up / General process improvement / Capacity increased by 20%


Running cost Optimization Software

case history 2

Project scope
- Running cost optimization for Oxidation Reactor
• Complex chemistry
• Industrial constraint
- Model development:
• Bubble column reactor model
• Cost model
• Kinetic model

PECS scope
- Model development
- Software development
- Industrial calibration
- Result validation

Project schedule
- Model development: Start February 2002 - End September 2002
- Industrial model validation: Start September 2002 - End April 2003
- Extension for NPV optimization: Start April 2003 - End July 2004

Program results
- RC Savings: 2-4 €/t - NPV Savings: >5 M€ - Debottlenecking of existing plants


Stripping of methylene chloride from waste water

case history 3

Project scope
- Removal of methylene chloride from process waste water
• Methylene chloride in treated water: < 2 ppm • Plant completely automated (including start up and shut down)

PECS scope
- Technology supply
- Basic engineering pakckage
- Technical assistance to plant start up

Project schedule
- Basic engineering: Start August 2004 - End November 2004
- Erection (customer mgt): Start January 2005 - Mechanical commissioning April 2005
- Start up: May 2005
- Investments: whitin Budget

Plant performances
- Capacity: whitin specs
- Product quality: whitin specs
- Steam usage: low
- Operability:
• Excellent (including start up and shut down)
• Flexibility


27 ktpa Chlorine Electrolysis

case history 3

Project scope
- 27 ktpa KCl membrane electrolysis
• Feed: technical and raw KCl
• Products: 50% KOH, wet chlorine, wet hydrogen
- Green field plant, replacing Hg electrolysis, including:
• Brine loop (zero effluent)
• Chlorine loop
• Hydrogen loop membrane cells (package)
• KOH concentration (package)
• Utilities (DMW, CW, N2)
- Investments: 22 MEUR

PECS scope
- Technology supply
• Exclusded: cells, KOH concentration
- Basic engineering pakckage

Project schedule
- Basic engineering: Start November 2006 - End May 2007 (six months)
- Detail engineering (contracted by customer): Start June 2007 - End April 2008
- Erection: Start September 2007 - Mechanical commissioning May 2008 - No incidents / accidents during erection
- Start up: July 2008
- Investments: whitin Budget

Plant performances
- Capacity: + 10%
- Product quality: in spec
- Safety: no chlorine accident reported
- Environment: zero effluent respected
- Operability:
• excellent (ergonomy of DCS interface)
• Flexibility
• Good control of byproducts [Chlorates - Sulfates]


BIOGAS PURIFICATION

case history 5

Project scope
- Remove impurities (siloxanes, Chlorinated compound and H2S) from biogas produced in landfilling for feed endothermic engines

PECS scope
- Technology supply
- Basic engineering pakckage
- Detail engineering

Technology
- Adsorption using specific activated carbon
- In situ regeneration

Project schedule
- Basic engineering: Start May 2010 - End June 2010
- Detail engineering: Start June 2010 - End September 2010
- Erection: Start November 2010 - December 2010 - No incidents / accidents during erection
- Start up: December 2010
- Investments: whitin Budget