Devolatilization technology containing continuous recovering and refining process and equipment thereof
A technology and process technology, applied in the field of devolatilization technology and equipment used in the continuous recovery and refining process, can solve the problems of expensive maintenance, high energy consumption of the extruder, high investment cost of the degassing extruder, etc., and achieve the improvement of heat transfer benefit effect
Inactive Publication Date: 2009-01-07
SHANGHAI JINGQI POLYMER MATERIAL
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Problems solved by technology
In terms of today's conditions, the investment cost of the degassing extruder is expensive, the extruder consumes a lot of energy, the effective conditions for operation and use are narrow, and the maintenance is expensive
Method used
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Embodiment 1
[0031] As shown in Figure 1, a kind of equipment used in devolatilization technology with continuous recovery and refining process is composed of refining distillation device, polymerization reaction device, two-stage devolatilization device and wire drawing granulation device in series, including: main raw material storage tank 1. Comonomer storage tank 2, solvent storage tank 3, recovery monomer storage tank 4, polymerization reaction tank 5, recovery refining tower 6, recovery tank 7, heater a8, heater b9, devolatilization tank a10, devolatilization Tank b11, condenser a12 ~ condenser d15, pump a16 ~ pump h23, high viscosity gear pump a24 ~ high viscosity gear pump c26, control valve a27, control valve b28.
[0032] Among them, the main raw material storage tank 1, the comonomer storage tank 2, the solvent storage tank 3 and the recovered monomer storage tank 4 pass through the pump a16, the pump b17, the pump c18 and the pump d19 and the delivery pipeline respectively from ...
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Abstract
The invention relates to a devolatilization process in the polymerization production process of a polymer and an energy-saving environmental-protection technique and the used plant for refining and reusing recovered monomers, in particular to a devolatilization technique containing a continuous recovering and refining process and the used plant. The plant used for the devolatilization technique containing the continuous recovering and refining process comprises a flash devolatilization device including a two-stages devolatilization device, and a heater, wherein the heater can be selected from a multitube-type shell-tube heat exchanger with the tube length less than 3 m and the tube diameter less than 50 mm, a static mixer is fixed in the tubes, and a steel ball is welded in the tube; and the heater can also be selected from laminated heater with a thin plate thickness less than 4 mm, and the width of a channel between the outer edges of two heating plates is less than 20 cm, preferably 8 to 12 cm. The devolatilization technique containing the continuous recovering and refining process comprises the following four steps: refining and distillation, polymerization reaction, flash devolatilization, and wire drawing and granulation. The process has the advantages of high devolatilization effect, high product purity, pure color, energy saving and environmental protection.
Description
technical field [0001] The invention relates to a devolatilization process of high molecular polymers in the polymerization production process, an energy-saving and environment-friendly technology for refining and reusing recycled monomers and equipment used, specifically a devolatilization technology including a continuous recovery and refining process and equipment used. Background technique [0002] Polymer devolatilization is to remove one or more unreacted monomers or solvents from the polymer by heating and volatilizing. The devolatilization process must consider effective heating to increase the temperature to volatilize monomers and solvents, and at the same time to raise the temperature of the polymer to above the softening point and to have fluidity, but at the same time not overheating, without damaging the molecular weight, color and other properties of the polymer. In general commercial continuous bulk or solution polymerization processes, the devolatilization p...
Claims
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IPC IPC(8): C08F6/10
CPCY02P20/10
Inventor 杨青岚
Owner SHANGHAI JINGQI POLYMER MATERIAL