Pollution Minimum Combustion Technology of VR Fired Boiler

摘要

In recent years, research on whether VR (vacuum residue), an extra-heavy oil, can be used as a boiler fuel in petroleum refineries has been undertaken. Cleaner combustion technology of this VR is required because it has an extremely high viscosity and extraordinarily high contents of sulfur, nitrogen, conradson carbon and heavy metals, etc. Based on the successful results of our continuing research and development efforts over a long term, accumulated technology and extensive experience of extra-heavy oils, MHI has already supplied as many as 23 boilers fired by asphalt or high viscosity extra-heavy oils. This demonstrates the availability of a practical combustion technology for such extra-heavy oils without any problems. Recently using our 2 t/h combustion test furnace, MHI conducted a combustion performance verification test on this VR for the purpose of using extra-high viscosity vacuum residue as a fuel for power generation. This test confirmed that the stable ignition and clean combustion of VR could be achieved by the available technology.