Flow back separation system and method

A system for separating solids from a slurry recovered from a hydrocarbon well, comprising:

• a tank having side walls, a bottom, and a top, the tank having a front section, a mid-section, and a rear section;
• a degassing unit operatively associated with the tank, the degassing unit removing an entrained gas from the slurry and discharging a first slurry into the tank whereby a first settling of a first solids within the first slurry takes place;
• a conveying device operatively positioned within the tank, the conveying device configured to cause the first solids to move proximate to an inlet of a first conduit operatively positioned within the tank;
• a pump in fluid communication with the first conduit, the pump configured to pump a second slurry containing the first solids through the first conduit;
• a hydrocyclone unit in fluid communication with an outlet of the first conduit, the hydrocyclone unit receiving and processing the second slurry to produce an overflow comprising a first clean fluid and an underflow comprising the first solids;
• a shaker operatively associated with the hydrocyclone unit, the shaker configured to receive the underflow from the hydrocyclone unit and to cause a dewatering of the first solids to produce a dried first solids, the shaker further configured to convey the dried first solids for disposal or reuse, the shaker producing an underflow comprising a third slurry comprising a second solids, the shaker configured for depositing the third slurry into the tank for recirculation through the first conduit to the hydrocyclone unit;
• a second conduit having an inlet and an outlet, the inlet of the second conduit in operative association with the hydrocyclone unit to receive and provide a flow path for the overflow comprising the first clean fluid, the outlet of the second conduit operatively positioned within the tank for discharge of the overflow comprising the first clean fluid therein;
• and
• an overflow device operatively positioned within the tank, the overflow device configured to provide an outlet for the first clean fluid to exit the tank.