Preposition conveying system and method in slag-slurry separation

A technology of slurry separation and conveying system, applied in the direction of solution crystallization, etc., can solve problems such as production system damage, polysilicon production process shutdown, pipeline blockage, etc., to prevent production accidents, prevent damage, and improve production efficiency.

Pending Publication Date: 2019-06-21
SICHUAN YONGXIANG POLY SILICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Slurry with the above composition will crystallize on the pipeline wall during pipeline transportation, and will block the pipeline in a short period of time, causing great damage to the entire production system, forcing the polysilicon production process to stop production, causing extreme big loss

Method used

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  • Preposition conveying system and method in slag-slurry separation
  • Preposition conveying system and method in slag-slurry separation
  • Preposition conveying system and method in slag-slurry separation

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Embodiment Construction

[0021] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with specific embodiments.

[0022] Such as Figure 1-Figure 3 As shown, the present invention provides a pre-conveying system for slurry separation, including two stirring cooling tanks respectively connected to the conveying pipeline; the stirring cooling tank includes a tank body 1, and the tank body 1 is provided with a feed inlet 2 and The discharge port 3 connected with the delivery pipeline; the tank body 1 is provided with a stirring frame; it also includes a driving device for driving the stirring frame to rotate; The water inlet 4 and the water outlet 5; It also includes a nitrogen pressurization device delivery device connected to the tank body 1.

[0023] Stirrer frame comprises the rotating shaft 6 that is arranged vertically and is connected with driving device, an...

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Abstract

The invention discloses a preposition conveying system and method in slag-slurry separation. The system includes two stirring cooling tanks respectively connected with a conveying pipeline, and is characterized in that each stirring cooling tank includes a tank body, a feeding port and a discharging port connected with the conveying pipeline are arranged on the tank body; a stirring frame is arranged inside the tank body; a driving device for driving the stirring frame to rotate is included; each tank body is of a sandwich structure; a water inlet and a water outlet communicated with the cavity inside the sandwiching layer are included; a nitrogen pressure device conveying device connected with each tank body is also included. The principle of the invention is that the liquid slag and slurry is pre-crystallized inside the tank body through the stirring cooling tanks; the crystallized crystals enter the conveying pipeline through slag and slurry stock solution and flushing fluid, at thetime, content of solid matters is relatively low, so that sedimentation inside the pipeline is avoided.

Description

technical field [0001] The invention relates to a conveying device and a conveying method for conveying the liquid slag slurry of a silicon tetrachloride heightening tower to a separation system. Background technique [0002] In the polysilicon production process, the silicon tetrachloride separated by the bulkhead tower is rectified by the tower, and the liquid slurry contains 10% polychlorosilane, 0.5% metal chloride and a small amount of silicon powder. Slurry with the above composition will adhere to the pipeline wall and crystallize in the process of pipeline transportation, and will block the pipeline in a short period of time, causing great damage to the entire production system, forcing the polysilicon production process to stop production, causing extreme Big loss. Contents of the invention [0003] In view of this, the present invention provides a pre-conveying system and method for slurry separation, which transports liquid slurry after crystallization in advan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D9/02
Inventor 罗轩袁中华汪军
Owner SICHUAN YONGXIANG POLY SILICON
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