DRAINAGE SYSTEM, PLANT FOR COMBINED HYDROCRACKING OF HEAVY OIL FEEDSTOCK AND START-UP METHOD OF SUCH PLANT Russian patent published in 2024 - IPC C10G45/08 B01J23/882 B01J23/883 B01J23/888 B01J23/94 B01J27/51 B01J27/19 B01J27/28 B01J37/02 B01J37/20 B01J38/12 B01J38/48 B01J38/62 

FIELD: water supply and sewerage.

SUBSTANCE: invention relates to a drainage tank, which is a vertical reservoir with an inclined bottom, which includes: inlet branch pipe for supply of flow into tank, outlet branch pipe for discharge of contents from tank and nozzle, which are located in the lower part of the tank and are made with possibility of formation of flows directed to the bottom of the tank for mixing the contents of the tank by lifting the contents from the lower part of the tank to the upper part of the tank. Invention also relates to a drainage system, a combined hydrocracking plant and an emergency shutdown method.

EFFECT: use of the invention enables to reduce the probability of equipment clogging with deposits, which enables to avoid long-term downtime of equipment and labour-intensive cleaning of equipment from deposits.

11 cl, 6 dwg