A material returning device

By designing a material return device that includes a material return line, a close-packed tank, and a waste heat boiler, the heat exchange between low-temperature demineralized water and high-temperature material return medium solves the problems of long processing time and unused waste heat in traditional material return processes. This achieves rapid cooling and waste heat recovery, improving device efficiency and reducing costs.

CN224316130UActive Publication Date: 2026-06-02连云港石化有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
连云港石化有限公司
Filing Date
2025-07-14
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Traditional styrene plant unloading processes are time-consuming and waste heat is not effectively utilized. High-temperature unloading media are prone to cavitation in the pump body, affecting the normal delivery of materials and resulting in long plant maintenance cycles.

Method used

Design a material return device that includes a material return line, a close-packed tank, a waste heat boiler, and a centrifugal pump. The device rapidly cools down the material by exchanging heat between low-temperature demineralized water and high-temperature material return medium, and then sends the heated demineralized water to the waste heat boiler to generate steam for subsequent processes, thereby achieving waste heat recovery.

Benefits of technology

It improved material return efficiency, shortened equipment maintenance cycle, reduced production costs, effectively recovered waste heat from the equipment, and improved energy utilization efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of waste heat recovery technology, specifically a material return device, including a material return line, a densely packed tank, a waste heat boiler, and a centrifugal pump. The material return line is connected to the inlet of the densely packed tank, and a set of first temperature displays is installed on the material return line. A discharge pipeline is provided at the discharge end of the densely packed tank, and the discharge end of the discharge pipeline is connected to the inlet conveyor line of the unqualified styrene tank. A centrifugal pump is installed between the inlet conveyor line of the unqualified styrene tank and the discharge pipeline. This application achieves rapid cooling of the material return medium by exchanging heat between low-temperature demineralized water and high-temperature material return medium. Compared with the traditional styrene plant material return process, this significantly improves the material return efficiency and reduces the plant maintenance cycle. The heated demineralized water is sent to the waste heat boiler, and the steam produced by the waste heat boiler is discharged into the steam network and can be used as reboiling steam in the separation process of the downstream distillation system, effectively reducing the plant's steam consumption and production costs.
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