Texas Eastman uses a chloride solution as a catalyst to produce acetadehyde. A constant stream of HCl is required to maintain the catalyst's chloride ion concentration. Chloride is lost to chlorinated by-products that are partially recovered by oxidation back to HCl. By optimizing the system more chlorinated by-products are returned to the system decreasing waste and reducing the need for fresh HCl.
To optimize the system the following steps were taken. Automated controllers were installed on the chlorinated by-product distillation column. The amount of excess air used for producing HCl was lowered. Finally, the combustion temperature of the chlorinated by-product oxidizer was lowered.
The optimization reduced the amount chlorinated by-product sent to incineration by 690,000 pounds a year.
Details of Reductions
Additional Information :
Reduced consumption of HCL for acetadehyde production save the company $315,000 a year.