Multiple condenser system delivers continuous stream of phthalic anhydride
- Koppers Company, Inc., Bridgeville, PA
This article focuses on presenting a solution to a Koppers Co. plant's necessity to deliver a continuous stream of phthalic anahydride from a multiple condensor system. A synthetic, liquid-phase heat transfer fluid serves a product collection system downstream of a fluid bed reactor producing crude phthalic anhydride. Using four condensers in the collecion system allows the product to be delivered for further processing in a more continuous stream, which can be processed more efficiently than was previously possible. Computer timed cycling of the four condensers assures steady flow. The synthetic, liquid-phase heat transfer fluid used in the collection system gives non-pressurized, indirect thermal transfer. Sensible heat, and not latent heat, is exchanged to and from the fluid. As a result, the fluid remains in the liquid phase at every point, so the fluid components of the system con be of a low pressure design. Fabrication costs were accordingly lower. A computer based control system with interface provides more efficient operation than was possible with the old system using manually operated valves. Koppers operating management is instituting new timing sequences now which will save energy by letting each condenser stay on the collect cycle longer. Heating and cooling each condenser less frequently means less heat will be lost when a condenser is cooled down to collection cycle temperature by the cold loop heat transfer fluid.
- OSTI ID:
- 6206036
- Journal Information:
- Chem. Process. (Chicago); (United States), Journal Name: Chem. Process. (Chicago); (United States) Vol. 45:9; ISSN CHPCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
320303* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
CARBOXYLIC ACIDS
CHEMICAL PREPARATION
COMPUTERIZED CONTROL SYSTEMS
CONDENSERS
CONTROL SYSTEMS
DICARBOXYLIC ACIDS
ENERGY MANAGEMENT SYSTEMS
ENERGY SYSTEMS
FLUIDS
HEAT TRANSFER FLUIDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
PHTHALIC ACID
SYNTHESIS