Polyester pre-polycondensation vacuum energy-saving system

CN223337314UActive Publication Date: 2025-09-16XINFENGMING JIANGSU XINTUO NEW MATERIAL CO LTD
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Patent Information

Application Number
CN202422792183.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-15
Publication Date
2025-09-16
Estimated Expiration
2034-11-15

AI Technical Summary

Technical Problem

The existing polyester precondensation vacuum system has serious energy waste and poor adjustment stability. In particular, during the precondensation process, the bypass opening of the vacuum pump outlet is large, resulting in energy waste and unstable vacuum control.

Method used

A polyester pre-condensation vacuum energy-saving system is adopted, including components such as a pre-condensation reactor, a scraper condenser, a liquid ring vacuum pump group, a vacuum regulating valve group and a three-stage jet pump. Through the cooperation of the air supply regulating valve and the vacuum regulating valve group, precise control and stability of the vacuum system are achieved, and the spare pump body is used to ensure continuous operation of the system.

Benefits of technology

It improves the operating stability and product quality of the polyester device, has the characteristics of good energy-saving effect, simple process, high control precision, can cope with various vacuum fluctuations, and reduce energy waste.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a polyester pre-polycondensation vacuum energy-saving system, and relates to the technical field of polyester production. The polyester pre-polycondensation vacuum energy-saving system comprises a first pre-polycondensation reaction kettle, a second pre-polycondensation reaction kettle, a first pre-polycondensation scraper condenser, a second pre-polycondensation scraper condenser, a first pre-polycondensation liquid ring vacuum pump set, a vacuum adjusting valve set, a first pre-polycondensation mixed steam pipeline, a second pre-polycondensation mixed steam pipeline and a first pre-polycondensation scraper condenser tail gas pipeline. The system comprises a pre-polycondensation two-scraper condenser tail gas pipeline, a three-stage injection pump, a gas supply pipeline, a gas supply regulating valve group, a vacuum regulating valve group, a condensate pipeline and a condensate valve, and can cope with vacuum fluctuation in various scenes, so that the operation stability of a polyester device is improved, the product quality is improved, and the production cost is reduced. And a condensate pipeline between the vacuum regulating valve group and the pre-polycondensation second scraper condenser can also be used for discharging tail gas accumulated liquid of a tail gas pipeline of the pre-polycondensation first scraper condenser, and the device has the characteristics of good energy-saving effect, simple process and high control precision.
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