The specialists of UNID Technologies GmbH carried out the project on the reconstruction of the purification unit of flue gas from the regenerator of catalytic cracking and utilization of its heat at the production site of "LUKOIL Neftochim Burgas" AD, Bulgaria.

Object of reconstruction: recovery boiler and catalyst dust collecting unit.

Scope of work: design, equipment supply, installation and commissioning works (EPC).

As well known, the European Community sets increasingly stringent requirements on emissions into the atmosphere by industrial plants, including the content of solids in it. UNID Technologies developed an effective system for the removal of catalyst dust from the flue gases of the catalytic cracking regenerator. The use of highly efficient bag filters coupled with the heat recovery boiler reduces the solids content from 400 to 30 mg/m3 (with a possible level of cleaning up to 10 mg/m3).

The utilization of highly efficient bag filters in combination with heat recovery boiler at "LUKOIL Neftochim Bourgas" AD reduced the solids content of the catalyst dust in flue gas from 400 to 10 mg /m3. At the moment the object acts in full compliance with EU environmental requirements and EU Directive 2010/75/EC for oil refineries.