Environment-friendly sulfuric acid continuous flow waste heat recovery device and recovery method

By combining a flexible inner shell, a supporting frame, and heat transfer oil, the mechanical damage problem of traditional sulfuric acid reactors under pressure fluctuations is solved, achieving efficient and safe waste heat recovery and improving the operational reliability and lifespan of the unit.

CN122305848APending Publication Date: 2026-06-30JIANGSU YANGHENG CHEM CO LTD
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Patent Information

Application Number
CN202610563473.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-27
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Traditional rigid heat exchangers cannot adapt to the pressure changes caused by sulfuric acid reactions, resulting in alternating stress on the heat exchange wall, which can easily cause damage or even leakage, posing a safety hazard.

Method used

The waste heat recovery device, consisting of a flexible inner shell, a supporting frame, heat transfer oil, and a pressure sensor, achieves stable support and efficient waste heat recovery for the sulfuric acid reaction process by dynamically adjusting the internal and external pressure balance and the insulation structure.

Benefits of technology

It extends the service life of equipment, improves the overall energy utilization efficiency, reduces maintenance costs, ensures the safety and stability of the device, and avoids heat loss and mechanical damage.

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Abstract

The invention discloses an environment-friendly sulfuric acid continuous flow waste heat recovery device and method, and relates to the technical field of waste heat recovery devices.The environment-friendly sulfuric acid continuous flow waste heat recovery device comprises a flexible inner shell, a supporting framework is arranged in the flexible inner shell, and the flexible inner shell is connected with a pressure-bearing outer shell through a first connecting pipe at the top end; heat-conducting oil is filled between the protective layer in the pressure-bearing outer shell and the flexible inner shell, static gas is arranged between the protective layer and the inner wall of the pressure-bearing outer shell, and a first pressure sensor and a second pressure sensor on the inner side and the outer side of the flexible inner shell are used for detecting pressure applied by the sulfuric acid reaction solution and the heat-conducting oil respectively. By arranging the flexible inner shell, the pressure-bearing outer shell, the first oil pump, the second oil pump, the first pressure sensor and the second pressure sensor, continuous and stable recovery of waste heat in the sulfuric acid reaction process is achieved, the comprehensive utilization efficiency of energy is improved, the operation reliability of equipment is improved, the service life of the equipment is prolonged, and the heat transfer efficiency is optimized; and the manual intervention demand is reduced.
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