Single kettle continuous polyester equipment with full flow and without stirring
A non-stirring, full-process technology, applied in the field of chemical equipment, can solve the problems of large heat loss, complex structure of the reaction device, and high energy consumption.
Active Publication Date: 2007-12-26
OERLIKON BARMAG HUITONG YANGZHOU ENG CO LTD
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Problems solved by technology
Its disadvantages are: each reaction kettle is isolated from each other, resulting in a large heat loss during the transfer process of the material, which requires electric energy to be transferred in each reaction kettle, and stirring is required during the reaction process, which consumes a lot of energy; the structure of the reaction device is complex, large area
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[0014] As shown in the figure, it is a single-pot non-stirring full-process continuous polyester device, including an esterification reactor 11, a pre-condensation reactor 7 and a final polycondensation reactor 8. A heater 12 is provided in the esterification reactor 11, and the heater 12 An isolation baffle 13 is erected on the periphery, and the bottom of the isolation baffle 13 is provided with a circulation channel 14 connecting the inside and outside of the isolation baffle. The esterification reactor 11 is located above the heater and is provided with a barrier plate 10, and the outlet of the esterification reactor 11 is arranged on the outside of the isolation baffle; the pre-condensation reactor 7 and the final polycondensation reactor 8 are coaxially arranged in the esterification reactor Above 11, the final polycondensation reactor 8 is positioned at the periphery of the precondensation reactor 7, the inlet 20 of the precondensation reactor is arranged on the top of t...
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This invention discloses a stirrer-free single still full-flow continuous polyester production apparatus, which comprises an esterification reaction kettle, a pre-polycondensation reaction kettle, and a final polycondensation reaction kettle. The esterification reaction kettle comprises a heater inside. The pre-polycondensation reaction kettle and the final polycondensation reaction kettle are coaxially set above the esterification reaction kettle. Baffles are vertically set surrounding the heater. A hollow tray and a barrier plate are horizontally set in the pre-polycondensation reaction kettle. Both the hollow tray and the barrier plate comprise multiple holes. Multiple retention trays are horizontally set in the final polycondensation reaction kettle, and comprise multiple holes. The outlet at the lower part of the final polycondensation reaction kettle is connected with the output pump. The tops of the pre-polycondensation reaction kettle and the final polycondensation reaction kettle comprise vacuum suction ports. The apparatus has such advantages as no need for stirrer, no need for outside driving force, low energy consumption, compact structure, small floor area and low cost.
Description
technical field [0001] The invention relates to chemical equipment, in particular to a polyester production device. Background technique [0002] At present, the polyester industry is developing rapidly, and people's grasp of polyester technology is becoming more and more mature. The polyester production process needs to go through three processes: esterification, precondensation, and final polycondensation. The polyester reaction device in the prior art is generally It includes three independent esterification reactors, pre-condensation reactors, and final polycondensation reactors. Each reactor is equipped with a jacket for heat preservation or heating. The reactors are connected by pipelines and pumps. After the reaction is completed, pump the material to the next reaction kettle for reaction. In order to strengthen the mixing, a stirring device is installed in the corresponding reaction kettle. Its disadvantages are: each reaction kettle is isolated from each other, res...
Claims
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IPC IPC(8): C08G63/78
Inventor 严旭明
Owner OERLIKON BARMAG HUITONG YANGZHOU ENG CO LTD