ABSTRACTS 525

all of the identified risks from waste incineration systems. Yet, current incineration technology may not

always control metal emissions effectively and consistently. Research in this area is urgently needed.

The proposed research is to develop a novel two-stage fluidized-bed incineration technology for metal emission control through various mechanisms in a controllable manner, including heterogeneous condensation, chemi- sorption, coagulation and other mechanisms. The results from our previous and current research have clearly indi- cated that the proposed technology has great control of metal emissions during incineration. The objective of the project is to experimentally demonstrate the technol- ogy and to evaluate process characteristics.

In addition to technology development, the project will generate valuable information regarding general metal behavior during incineration. The information is critically needed in the design and operation of conven- tional incineration systems for the effective control of metal emissions.

W A S T E M I N I M I Z A T I O N B Y P R O C E S S

M O D I F I C A T I O N

Jack R. Hopper and Carl L. Yaws Department of Chemical Engineering, Lamar University, Beaumont, TX 77710

This research involves a continuation of development of

examples of waste minimization by process modifications including reaction and separation parameters. In the first phase of the research, pollution

prevention by process modification was investigated for the production of allyl chloride using two- and

three-reaction models. In this second phase of the research, a study of waste

minimization by process modification of the reaction pa- rameters in the process, the following conditions are rec- ommended:

Reactor Type: Fluidized Bed Reactor Temperature: 400-480°C Residence Time: 2 -10 sec. The reactor effluent from the operation of the reactor

at 450°C and at a residence time of 7 seconds is Component Mole % Propylene 1.4 Ammonia 1.4 Oxygen 5.5 Acrylonitrile 3.6 Water 18.1 Acrolein 0.0 Acetonitrile 0.2 Carbon dioxide 1.8 Carbon monoxide 1.7

Hydrogen cyanide 1.6 The conversion is 81.05%. Analysis of the acrylonitrile process to minimize by-

products through modification of separation parameters is in progress. Reaction studies have been initiated for the vinyl chloride and perchloroethylene/trichlo- roethylene processes.

A N E L E C T R O N I C B U L L E T I N B O A R D

S Y S T E M F O R T H E T E X A S P O L L U T I O N

P R E V E N T I O N I N F O R M A T I O N C E N T E R

Donald Jordan Computer Science, Lamar University, Beaumont, TX 77710

Carolyn Harris Administrative Services, Lamar University, Beaumont, TX 77710

Disposal of the ever-increasing amounts of hazardous substances is a critical concern in our society. Vast

amounts of resources are necessary to conduct research

into the most efficient and effective means to treat these wastes. Representatives of the federal government, state

governments, and industry are involved in the planning and allocation of resources and the exchange of technical information to combat this problem.

An important element in this process is the rapid transfer and exchange of information concerning new technology, existing and proposed research efforts, cur- rent literature, and scientific conference information ex- change. Sharing of data and information among agencies can reduce cost and eliminate redundancy. Storage of this information in a central repository for expeditious re- trieval and transmittal can facilitate more timely deci- sions in situations dealing with hazardous materials and substances.

The Texas Pollution Prevention Information Center is designed to assist and share this current, state-of-the-art information and/or technology with requesting re- searchers, scientist, government officials, and individu- als.

D E S I G N I N G C H E M I C A L R E A C T O R S

T O M I N I M I Z E W A S T E P R O D U C T I O N

Alan M. Lane Department of Chemical Engineering, University of Alabama, Tuscaloosa, AL 35487

Most chemical reactions are accompanied by side reactions that produce by-products. At best, the by-products are salable after separation from the desired product. At worst, they are disposed of as waste.

Traditional chemical reactor design involves maxi- mizing conversion of raw materials and selectivity to the desired product by the proper choice of reactor type and