Anti-blocking evaporation sedimentation chamber producing clean secondary steam

Abstract

The invention discloses an anti-blocking evaporation sedimentation chamber producing clean secondary steam. The evaporation sedimentation chamber comprises a steam collection chamber, an evaporation chamber, and a sedimentation chamber, which are sequentially arranged from top to bottom and which communicate with each other. A steam discharge port is provided on the top of the steam collection chamber. A feeding port is provided on a side wall of the evaporation chamber. A crystallization liquid discharge port is provided on the bottom of the sedimentation chamber. A material liquid discharge port is provided on a side wall of the sedimentation chamber. A de-foaming device is arranged on the steam collection chamber. A circulation liquid feeding port is arranged on the bottom of the sedimentation chamber. The position of the circulation liquid feeding port is lower than that of the crystallization liquid discharge port. According to the invention, the evaporation device and the sedimentation device are realized in a same device, such that land occupation is low, and equipment investment is saved. When adopted material liquid is discharged from the material liquid discharge port, one part of the material liquid is pumped from the circulation liquid feeding port back to the sedimentation chamber by using a liquid pump, such that solid-liquid mixture in the sedimentation chamber form circulation flow, and crystallization liquid discharge port is effectively prevented from being blocked by solid precipitate. Therefore, device normal operation is ensured.

Description

technical field [0001] The invention relates to the technical field of evaporation and sedimentation, in particular to an evaporation-sedimentation chamber that prevents clogging and generates clean secondary steam. Background technique [0002] Evaporation and sedimentation are widely used operations in chemical production. There are usually three purposes of evaporation operation: one is to obtain a concentrated solution directly as a chemical product or a semi-finished product; the other is to use evaporation to remove the solvent, increase the concentration of the solution to a saturated state, and then cool it to precipitate a solid product. The joint operation of crystallization is to obtain solid solute; the third is to remove solute to produce pure solvent. When sedimentation is used in a gas phase suspension system, it is to separate the contained solid dust or liquid droplets from the gas; when it is used in a liquid phase suspension system, it is to separate the ...

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Problems solved by technology

[0005] Aiming at the above-mentioned defects such as easy blockage of equipment in the prior art, the present invention provides an evaporation-settling chamber that prevents blockage and generates clean secondary steam, which is suitable for the separation of gas-liquid-solid mixed systems, and through the optimization of the structure of the settling chamber itself , to avoid the blockage of the discharge port during continuous operation, and improve the efficiency of evaporation and sedimentation operations

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