Evaporative concentrator
The system detects blockages in liquid level control valves and heat transfer tubes using flow meters and control valves, ensuring continuous operation by identifying partial blockages before they become complete.
JP2026109764APending Publication Date: 2026-07-02HITACHI GE NUCLEAR ENERGY LTD
Patent Information
- Application Number
- JP2024224810
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2026-07-02
AI Technical Summary
Technical Problem
Existing evaporation concentrators in radioactive liquid waste treatment equipment face blockage risks in liquid level control valves and heat transfer tubes due to impurities, leading to potential prolonged shutdowns without effective blockage detection mechanisms.
Method used
The system includes flow meters and control valves to monitor the waste liquid supply and heating steam flow rates, allowing early detection of partial blockages in the liquid level control valve and heat transfer tubes by analyzing measured values and valve opening degrees.
Benefits of technology
Enables early detection of blockages, preventing prolonged equipment shutdowns by maintaining operation during partial blockages.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure 2026109764000001_ABST
Abstract
To provide an evaporative concentrator that can be operated without prolonged equipment shutdown. [Solution] The system includes a heating heat exchanger to which waste liquid stored in a waste liquid tank is supplied via a first pipe and heated by heat exchange, an evaporator to which the heated waste liquid is supplied via a second pipe and concentrated and separated into steam and liquid, a waste liquid circulation pump installed in the middle of a third pipe connecting the evaporator and the heating heat exchanger and supplying the liquid in the evaporator to the heating heat exchanger, a waste liquid supply pump installed in the middle of the first pipe and supplying waste liquid stored in a waste liquid tank to the middle of the third pipe, a waste liquid supply flow meter installed in the middle of the first pipe and measuring the amount of waste liquid supplied by the waste liquid supply pump, a liquid level control valve installed in the middle of the first pipe and controlling the supply flow rate of waste liquid to maintain a constant liquid level in the evaporator, an evaporator liquid level meter for measuring the liquid level in the evaporator, and a heating steam inlet flow meter for measuring the inlet flow rate of heating steam supplied to the heating heat exchanger.
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Citation Information
Patent Citations
Controller for concentrator
JP1987250901A