Maleic Anhydride Plant Please click on our logo or any link in this presentation to be redirected to our website, email or other documentation. Thank You! 17A Marlen Drive w Hamilton, NJ 08691 w USA Tel: (609) 586-8004 w Fax: (609) 586-0002 www.ippe.com

General Overview Start Up: 1970 Shut Down: July 2007 Capacity: 15 kmta (starting with benzene) Technology: Benzene oxidation process Upgrades: € 8MM invested in 2000

General Overview Access to road and rail service with a harbor less than 100 km away Large quantity of new spare parts Process equipment was cleaned with water and is currently being kept under a nitrogen pad Process area footprint is 100m by 50m and the highest structure is about 35m tall There are no other chemical facilities located in the immediate area

General Overview Utilities Consumed: Raw Materials: Electricity Natural Gas Water Steam (produced from the exothermic reaction) Benzene or Butane Air Vanadium Catalyst Consumption Figures: Products Produced: 1235kWh of electricity 22.5kw of LNG 9 tons of steam 5.7m3 of demineralized water 9.8kg of Nitrogen Maleic Anhydride Production Figures: 11.9 tons of steam 750 kWh through a thermic fluid

Process Description Summary of Operations The plant produces 15 kmta of maleic anhydride starting with benzene due to a partnership with a neighboring coal processing plant which produced a benzols stream. This process of extracting benzols from the benzols stream has been removed from the site. The process currently uses benzene reacted with oxygen over a vandium catalyst to produce maleic anhydride Maleic anhydride is a solid at room temperature, but the plant maintains the process temperature above the 40°C melting point to keep the product fluid. This process is very efficient regarding benzene conversion with only 2 ppm of residual benzene remaining (specification is 5 ppm). The reaction is highly exothermic, producing 60 kmta of 18 bar steam. The Gillendorf reactor runs at 4 bar pressure and is basically a large shell and tube exchanger with over 1,000 tubes packed with the vanadium catalyst.

Process Description Summary of Operations The oxygen is obtained from air, which is compressed to the reactor pressure of 4 bar with a large 40,000 m3/hr Brown Boveri-Sulzer centrifugal compressor with a 1,250 kw electric drive. The “100” section of the plant consists of the main reaction: oxidation of benzene. It also includes the condensation reaction and subsequent adsorption of the product into water with a packed tower. The “200” section of the plant is dehydration utilizing a 32m2 Luwa wiped film evaporator. The “300” section of the plant vacuum distills the crude Maleic Anhydride, removing residual impurities and residue. The vacuum is created by modern, liquid-ring vacuum pumps. The control system for the plant is a relatively new Foxboro DCS system with flat screen monitors.

Environmental, Health & Safety Process Description Utilities A natural gas-fired hot oil furnace using Marlotherm as the heat exchange fluid is used for much of the process heating. The reactor is cooled with a molten salt system circulating 80 metric tons per hour of salt. There is a demineralized water system used in the adsorption process. The system produces a very high quality water product due to the requirements for process water in the plant. Environmental, Health & Safety A stainless steel carbon bed vent adsorption system was installed in 2001 to remove all benzene and other hydrocarbons from the process vents. The final vent goes to the atmosphere, with a gas chromatograph on the vent stack to detect any residual hydrocarbons.

Process Flow

Equipment Section “100”: Reactor –78m3 capacity, 316L Exchanger – A285 grade C shell, (2) A201 grade B plates, (493) A179 tubes Exchanger – 1,750 liter capacity Exchanger – 373.5m2 capacity, AC (1278) tubes Exchanger – 240m2 capacity, 316L Exchanger – 316L (2) Exchangers – A285 grade C Sima Exchanger – 373.5m2, double jacket, A283 grade C shell, A42 C1 inside, A 179 tubes Turbo Compressor – Cast Iron / CS Tank – A42 C1 double jacket, 316L Tank – 35m3 capacity, 316L Tank – 55m3 capacity, SS 23 CN 18-10, Salt tank with coil – 42m3 capacity, A42 C1 Absorption Column – 316L

Equipment Section “200”: Section “300”: Evaporator – 12m2 capacity, 316L Luwa Evaporator – 316L SMS Tank – 800 liter capacity, CS, double jacket, Sima Tank –30m3 capacity, CS double jacket, 316L shell (3) Tanks – 316L (2) Exchangers – 316L Exchanger – A42Cl shell, 316Ti tubes Section “300”: Exchanger – CS shell, 316L tubes/top Exchanger – NS22 S double jacket, 316L tubes Exchanger – NSMC shell w/ 316L tubes Tank – 316L shell and A37S coil Distillation Column – 316L Tank – CS double jacket, 316L shell

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Contact Information MICHAEL JOACHIM DIRECTOR, PLANTS DEPT. Tele: 609-838-5930 (direct) Mobile: 609-516-9107 MichaelJ@ippe.com SANJEEV REGE VP GLOBAL PLANT SALES Tele: 609-838-5938 (direct) Mobile: 609-510-2616 SanjeevR@ippe.com