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Apparatus and methods using piezoelectric microbalance sensors

A micro balance and sensor technology, applied in measuring devices, using material absorption and weighing, and using sonic/ultrasonic/infrasonic waves to analyze fluids, etc., can solve problems such as operation problems and low efficiency

Active Publication Date: 2018-05-29
ECOLAB USA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Specifically, as the heat in the aqueous cooling system is dissipated via evaporation, the components of the mineral scale in the remaining water become more concentrated, which causes the mineral scale to deposit on the interior of the cooling tower and thereby create operational problems and / or reduced efficiency

Method used

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  • Apparatus and methods using piezoelectric microbalance sensors
  • Apparatus and methods using piezoelectric microbalance sensors
  • Apparatus and methods using piezoelectric microbalance sensors

Examples

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Embodiment approach

[0025] While embodiments incorporating the general inventive concepts may take many forms, with the understanding that this disclosure is to be considered illustrative only and not intended to be limited to particular embodiments, various embodiments are illustrated in the drawings and will be described below.

[0026] The present disclosure generally relates to exemplary embodiments of piezoelectric microbalance sensors and methods of use thereof. A piezoelectric microbalance sensor includes a piezoelectric material, a heater, a counter electrode, and a pressure compensating spacer.

[0027] As it pertains to this disclosure, "piezoelectric" means having the ability to convert a mechanical stimulus into a measurable electrical signal. For certain embodiments of the present disclosure, piezoelectric microbalance sensors are capable of converting detected pressure into a measurable voltage signal.

[0028] As it pertains to this disclosure, a "piezoelectric microbalance senso...

Embodiment

[0069] The aqueous cooling system is equipped with fluorescent monitoring of the dosage and consumption of the cooling water treatment system. Fluorescence monitoring of the treatment system indicates that the treatment chemical is being consumed too quickly by the aqueous cooling system, which in turn triggers a substantial increase in the dosage of the water-soluble, scale-inhibiting chemical. However, no increase in process temperature was detected in the aqueous cooling system. Because of the substantial increase in indicated dosage, operators shut down the industrial process and aqueous cooling systems to disassemble and inspect the heat exchangers for fouling prior to any equipment failure. Although the heat exchanger showed no signs of fouling, the treatment chemicals were being consumed at an unduly high rate. Further investigation of the situation provided the answer that an undetected and dramatic increase in the concentration of soluble aluminum had started to exis...

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Abstract

Methods for monitoring scale deposition in a water-containing industrial process are disclosed. In certain embodiments, the water-containing industrial process is an aqueous cooling system. In certain embodiments, the methods incorporate fluorometric monitoring and control techniques along with a piezoelectric microbalance sensor. A particular embodiment of a piezoelectric microbalance sensor is additionally disclosed, along with at least one method for using the particular embodiment that is independent of whether fluorometric monitoring and control techniques are utilized.

Description

technical field [0001] The present disclosure relates to the treatment of aqueous industrial processes and the measurement of fouling or induced fouling in aqueous industrial processes. Background technique [0002] Aqueous cooling systems are subject to stress during their operation. Many aqueous cooling systems employ cooling towers that allow heat to be dissipated from the cooling water via evaporation. Typical stresses in aqueous cooling systems include mineral scale buildup in the cooling tower, reducing the efficiency of the cooling tower and aqueous cooling system. Specifically, as the heat in the aqueous cooling system is dissipated via evaporation, the components of the mineral scale in the remaining water become more concentrated, which causes the mineral scale to deposit on the interior of the cooling tower and thereby create operational problems and / or Reduced efficiency. Known parameters that typically affect scaling include the concentration of fouling speci...

Claims

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Application Information

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IPC IPC(8): G01N29/02G01N29/036G01N33/18G01N5/00
CPCG01N5/02G01N17/008G01N29/022G01N29/2443G01N2291/0256G01N2291/0258G01N2291/0426
Inventor 亚瑟·J·卡海安狄美特·L·库兹涅索夫J·E·胡特斯罗德尼·H·班克斯大卫·安布罗斯
Owner ECOLAB USA INC