System for feeding solid materials to a pressurized pipeline

摘要

The invention concerns pellets of resazurin comprising:
(a) from 1 to 40 weight percent resazurin;
(b) from 0 to 30 weight percent anhydrous sodium sulfate;
(c) from 15 to 60 weight percent 1-hydroxyethylidene biphosphonate, tetrasodium salt; and
(d) from 0.0 to 4.0 weight percent stearate,
and the use of these pellets in a system of equipment for allowing addition of solid materials to a pressurized pipeline.