Upgrading of thermal black reject material
AssigneeJ. M. Huber Corporation
InventorTrevor G. Lamond
Life of this patent
Estimating the term…
Abstract
Reject material which has been removed from a thermal black process by a screen and impinged on a plate in the bag filter, can be upgraded by removing material which has been reduced in size by being sucked into the bag filter, and adding that material to the product stream. The material of reduced size is removed by a vibrating screen. Some 50 to 60% of the reject material can be upgraded by this process.
Claims3
In the process comprising producing a carbon black by thermal decomposition of a hydrocarbon feedstock, pelletizing said carbon black, removing over-sized material from the carbon black by a first screening means, and sucking the over-sized material into a bag filter where it is impinged on a plate, the improvement which comprises:
- (a) removing material which has been reduced in size by being sucked into the bag filter and impinged on the plate from the over-sized material by a second screening means;
- and
- (b) adding the material of reduced size to the carbon black.
Dependencies are inferred from the claim text.