Sedimentation-prevention abrasion-prevention welding type plate heat exchanger for solid-liquid two-phase flow

The utility model discloses a sedimentation-prevention abrasion-prevention welding type plate heat exchanger for a solid-liquid two-phase flow. The sedimentation-prevention abrasion-prevention welding type plate heat exchanger comprises a vertical shell, wherein the shell comprises a feeding opening and a discharging opening, and a heat exchange plate bundle which is formed by assembling a plurality of welding plate pairs and facilitates flowing of materials in the vertical direction is arranged in the shell. Compared with the prior art, the plate heat exchanger has the advantages that the flow field analysis technology and field test testing of the solid-liquid two-phase flow are utilized, the running working condition of an improved heat exchanger is analyzed, particular concentration distribution inside the flow channel is uniform, after a device is parked, slurry is smoothly discharged under the gravity force effect, and no slurry sedimentation and retention problems exist in the device. Due to the fact that no obvious high solid content area exists nearby a plate, heat transfer is reinforced, and abrasion is effectively reduced.