Polymer dissolution equipment suitable for large fracturing operations

Compact and transportable equipment adapted to be used for fracturing operations on gas or oil fields, said equipment comprising, successively:

• a pneumatic means for supplying a silo with powder polymer,
• a silo for storing polymer in powder form,
• a means for conveying the polymer from the silo into a feed hopper,
• a feed hopper of a polymer metering device, said hopper being endowed with a top level and a bottom level,
• a device for metering out the powder polymer,
• a device for dispersing and grinding the polymer, said device comprising:
• a cone for wetting the powder polymer connected to a primary water inlet circuit,
• at the lower end of the cone:
• a dispersed polymer grinding and drainage chamber comprising:
• a motor-driven rotor equipped with blades,
• a fixed stator constituted of a cylinder equipped with thin slots,
• over all or part of the periphery of the chamber, a ring supplied by a secondary water circuit, the ring communicating with the chamber so as to ensure spraying of pressurized water over an outside of the stator, thus enabling release of ground and swollen polymer at a surface of said stator,
• at least two tanks for hydrating and dissolving the dispersed polymer originating from the dispersing and grinding device,
• at least two volumetric pumps enabling injection and metering of the polymer solution obtained in a mixer used for supplying a high-pressure fracturing pump.