A control method and system for preventing flash corrosion and fouling in a geothermal orc system

By monitoring the geothermal water temperature in real time and dynamically controlling the pressure of the ORC system, the problems of flash corrosion and scaling in the geothermal ORC system have been solved, achieving stable operation and efficient power generation of the system, and reducing maintenance costs and environmental risks.

CN122408267APending Publication Date: 2026-07-17NANJING TICA THERMAL TECH CO LTD
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Patent Information

Application Number
CN202610513482.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-17
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Geothermal ORC systems face flash corrosion and scaling problems under high temperature and high pressure conditions. Existing technologies, which use flash tanks for pretreatment, result in high maintenance costs, system complexity, and low thermal efficiency.

Method used

By monitoring the geothermal water temperature in real time and dynamically controlling the pressure of the ORC system to ensure it is always higher than the saturation pressure of the geothermal water, flash evaporation is avoided. The pressure is adjusted using a PID control algorithm, eliminating the need for equipment such as flash tanks.

Benefits of technology

It effectively prevents flash corrosion and scaling, improves system stability and power generation efficiency, reduces operation and maintenance costs, reduces environmental risks, and enhances the overall thermal efficiency of the system.

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Abstract

本发明公开了一种防止地热ORC系统闪蒸腐蚀与结垢的控制方法及系统,包括以下步骤:S1、获取进入ORC蒸发器的地热水温度参数;S2、基于地热水温度参数,确定地热水在当前温度下对应的饱和压力参数;S3、设定用于控制ORC系统运行的目标压力参数,目标压力参数大于所述饱和压力参数;S4、根据目标压力参数,对设置于ORC系统出口管路的调节机构进行调节,控制ORC蒸发器及相连管路内的实际压力,使地热水在流经ORC蒸发器的过程中保持液态,不发生闪蒸,相比现有技术,本发明通过实时监测地热水温度以及动态控制管路压力,确保系统压力始终高于当前温度下的饱和压力,从物理机制上杜绝闪蒸。
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