Tianhua Institute’s new filter press has gone into operation at the Shanghai Petrochemical Polyester Division to wide acclaim.
The polyester division had a No 2 oxidizer that was installed in the 1980s, making it one of the oldest in the field. That oxidizer used a 2-stage high-speed centrifugal design that consumed a lot of energy and had high maintenance costs. So, to make it more energy-efficient, the Tianhua Institute used a PTA program to design China's new filter press.
When the new press replaced the old one, it resulted in savings of 20,000 kWh of electricity a day, as well as 20,000 yuan worth of water, gas, and other power costs. In addition, the old annual maintenance fee of 2 million yuan was gone and, the machine has other applications in coal and catalyst work, meaning a good effect on society and the economy.