Patent ID: 9604864
Date: 2017-03-28
CPC Classifications: B01D,C02F,E21B,F22B

Claim:
1. A steam generation method from a feed water containing solid particles in suspension and mineral materials in solution, wherein the method comprises: (a) compressing said feed water at a low pressure of 3×10 (b) filtering said feed water in order to obtain: (c) compressing the filtered water stream at a medium pressure of 110×10 (d) directing said filtered water stream, compressed at said medium pressure, in an instant expansion tank containing a liquid phase, said filtered water stream being directed in the liquid phase of said instant expansion tank; (e) in said instant expansion tank, heating said stream from step (d) by mixing with the recycled stream from following step (h); (f) compressing again at a high pressure of 120×10 (g) heating the liquid phase in said heat exchanger(s) while maintaining the liquid phase in the liquid state; (h) recycling the phase from step (g) in said instant expansion tank; and (i) in said instant expansion tank, expanding said phase from step (h) and generating by instant expansion the steam containing mineral materials of the feed water which remained in solution; and (j) separating the solid particles formed from: as a second blowdown containing water and said particles.