High temperature and pressure oxidation-reduction potential measuring and monitoring device for hot water systems

A hot water system, temperature detector technology, applied in the direction of measuring devices, using electrical devices, thermometers using directly thermally sensitive electrical/magnetic components, etc., can solve the loss of steam products, high operating costs, shortened asset life, etc. problems, to achieve the effect of preventing corrosion and optimizing the level

Inactive Publication Date: 2014-07-09
NALCO CO
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  • Description
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  • Application Information

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Problems solved by technology

[0007] The second problem is that the presence of residual scavenger in the boiler water does not simply mean that the system is being treated satisfactorily
Further, real-time optimization of feedwater chemistry including oxygen scavenger / passivation schemes prevents corrosion problems that lead to lost steam production, production downtime, shortened asset life and higher operating costs

Method used

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  • High temperature and pressure oxidation-reduction potential measuring and monitoring device for hot water systems
  • High temperature and pressure oxidation-reduction potential measuring and monitoring device for hot water systems
  • High temperature and pressure oxidation-reduction potential measuring and monitoring device for hot water systems

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Embodiment Construction

[0038] As used herein, "hot water system" means any system in which hot water is in contact with a metal surface. "Hot water" refers to water having a temperature of from about 37°C up to about 370°C. Hot water systems can operate at or below ambient pressure or at pressures up to about 3000 psi. Preferred hot water systems are industrial boiler systems, which typically have water temperatures of about 90°C to 260°C and pressures up to about 3000 psi.

[0039] "ORP," "ORP measurement," "measured ORP," or similar terms refer to redox potential measurements made at operating temperature and pressure. In an embodiment, the term encompasses simultaneous measurement and delivery of temperature signals.

[0040] "Controller system" and similar terms refer to a manual operator or electronic device having components such as a processor, memory, cathode ray tube, liquid crystal display, plasma display, touch screen or other monitor and / or other components. In some circumstances, the...

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Abstract

The invention claims a device (10) for measuring the redox potential at operating temperature and pressure in a hot water system. The device includes a flow cell (25), a redox potential probe (26), a temperature detector (26a, 300) and an external pressure balanced reference electrode assembly (15). Each component of the device cooperates with the other components and each has an electrical connection for transmitting a signal to a controller. The controller calculates and determines adjustments for feedwater chemistry of the hot water system. In a particularly preferred embodiment, said temperature detector comprises four wire type temperature dependent resistance sensors (300-309).

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application is a continuation-in-part of currently pending US patent application Ser. No. 11 / 668,048 entitled "REDOX POTENTIAL MEASUREMENT AND MONITORING DEVICE FOR HIGH TEMPERATURE AND PRESSURE FOR HOT WATER SYSTEMS," the entire contents of which are incorporated by reference in their entirety. here. technical field [0003] The invention relates to an oxidation-reduction potential measuring device. More specifically, the present invention relates to a redox potential measurement and monitoring device for use in conjunction with anti-corrosion programs in hot water systems. In particular, the present invention relates to a redox potential measurement and monitoring device, the output signal of which is used to determine the rate of supply of chemicals that affect and control redox potential in industrial boiler systems. Background technique [0004] Corrosion due to increased redox potential is a major concern i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/28G01N27/403F22B37/38G01K7/20
CPCF24H9/2007C02F1/70G01K7/00C02F2209/04F22B37/02C02F2303/08G01N27/416G01K13/00C02F1/74C02F1/008C02F2209/40G01N27/28G01N27/403F24H9/455
Inventor 彼得·D·希克斯亚历山德拉·M·克诺特
Owner NALCO CO
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