Minitype demonomerization tower

Abstract

The invention discloses a minitype demonomerization tower, and belongs to the technical field of material purification units before spinning. The whole minitype demonomerization tower is a stainless steel container, the periphery of a tower body is coated with a carbon fiber heat-preservation layer, two glass view windows are arranged on the middle positions of the tower body, a material inlet is formed at the top end of the tower body, a vacuum extraction opening and a vacuum meter displaying vacuum degree are respectively arranged on the left side and the right side of the material inlet, and the material inlet is connected with a material guide tube arranged in the middle of the tower body. The material guide tube is divided into an inner layer and an outer layer. An umbrella-shaped conical surface is arranged on the position, on the upper portion of the interior of the tower body, of the material guide tube. Semi-oval plate surfaces are arranged below the conical surface, the upper portions of the semi-oval plate surfaces are connected with an outer material guide tube, and the lower portions of the semi-oval plate surfaces are connected with an inner material guide tube. A liquid storage barrel is arranged on the lower portion of the tower body, a liquidometer, glass view windows and a safety valve are arranged on the liquid storage barrel, and a material outlet is formed below the safety valve. The minitype demonomerization tower is simple in structure, the carbon fiber heat-preservation layer is accurate in temperature control, heat preservation is lasting, the semi-oval plate surface increases the solution evaporation area, and demonomerization is enabled to be complete.

Description

technical field [0001] The invention relates to a small monomer removal tower, which belongs to the technical field of material purification devices before spinning. Background technique [0002] Fibers are spun from solution, and the polymer solution generally needs to go through processes such as mixing, filtering, and degassing before it can be spun smoothly. In the one-step spinning production process route, the polymerization process often adopts a medium and low conversion rate process. The solution obtained after polymerization contains a large amount of monomers, which will cause changes in the viscosity of the stock solution, affect the quality of the finished product, and deteriorate the working conditions. increase consumption, etc. Therefore, the polymerized solution should be sent to the monomer removal tower, and the unpolymerized monomers are flashed out from the solution under a certain degree of vacuum, and the residual monomers are extracted together with ...

AI Technical Summary

Problems solved by technology

The monomer removal tower currently used is generally an umbrella surface with 5 cone angles inside, and then the solution flows down in a thin film on the umbrella surface. This method makes the monomer removal unclean and affects the quality of the finished product.

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