Kazincbarcika, Hungary - Isocycanate and PVC manufacturer BorsodChem announced 22 Jan that it is implementing new technology the group has successfully developed for production of MDI (methylene diphenyldiisocyanate).
Borsodchem aims to use the approach for debottlenecking of its existing MDI plants at Kazincbarcika, to lift capacity to 300 kilotonnes per annum in the coming 2-3 years.
And the group said its current TDI (toluene diisocyanate) project is going to plan, with a state-of-the-art 200ktpa DNT-to-TDI (dinitrotoluene to TDI) chain scheduled to come on stream by 1 July 2009.
In 2006, the group announced plans to spend Euro 500 million to raise MDI capacity to 360 ktpa from 140 ktpa and TDI capacity to 260 ktpa, by 2012, as indicated in the chart.
The Hungarian group said a five-year programme has resulted in methods for capital-efficient MDI debottlenecking. A key development is "a more efficient phosgenation process, which results in a cleaner reaction with fewer undesirable side products," the company claims.
The efficiency also gives the potential for better capital utilisation in future plants, the company added. A combination of high operating pressures and smooth management of the mixing energy thus introduced are key aspects of this improved phosgenation.
Other parts of the process have also been optimised, said Borsodchem's announcement, adding that is has applied for patents for the process.
PIC: Chart released by Borsodchem in 2006 showing expansion plans for MDI and TDI