Device for monitoring content of organic matters in circulating water in anti-explosion area on line

A monitoring device, a technology for organic matter, which can be used in measuring devices, by measuring the acceleration and deceleration rates of fluids, and using liquid/vacuum for liquid tightness measurement, etc. and other problems to achieve the effect of ensuring normal operation, avoiding low temperature freezing, and easy on-site maintenance

Inactive Publication Date: 2011-06-22
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The leakage of organic matter in the water cooler will cause the following problems: (1) Increase the cost of sewage treatment in the water plant. If it is not found in time, it will be necessary to replace a large amount of fresh water and add a large amount of antiseptic, bactericidal and other chemicals. The circulating water system will take a month or even It will take several months to gradually stabilize and seriously affect normal production work; (2) bring serious safety hazards to production, such as safety accidents will cause huge economic losses
However, due to the particularity of circulating water pipelines in petrochemical enterprises, they need to work outdoors and under explosion-proof conditions, and the pipelines themselves are under pressure. However, the existing online monitoring equipment such as ultraviolet spectrophotometers has pressure restrictions, and the equipment itself cannot be explosion-proof. Can not be used in low temperature environment, so that these devices can not be directly applied to the monitoring of circulating water in petrochemical enterprises

Method used

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  • Device for monitoring content of organic matters in circulating water in anti-explosion area on line
  • Device for monitoring content of organic matters in circulating water in anti-explosion area on line

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: The pressure of the circulating water pipeline in a styrene workshop is 0.2Mpa. There may be lubricating oil in the water pipeline when a leakage accident occurs. This device is installed in the circulating water pipeline, and a set of optical fiber online monitor (output signal 4-20mA) is installed. The outlet head of the centrifugal pump is 30m, the rated current is 2.5A, the outlet pressure of the pressure reducing valve is less than 0.04Mpa, the discharge pressure of the safety valve is 0.06Mpa, and the rated current of the electric heat tracing is 2A.

[0031] The results of monitoring for 90 days show that the online monitoring device is operating normally, the sampling system has no leakage when it is stopped, and it works normally after it is turned on. The reading of the optical fiber monitor has been stable at about 30ppm, indicating that there is lubricating oil in the water in the pipeline, and there is a leakage accident. .

Embodiment 2

[0032] Example 2: The pressure of the circulating water pipeline in a styrene workshop is 0.4Mpa. When a leakage accident occurs, there may be styrene monomer in the water pipeline. This device is installed in the circulating water pipeline, and a set of ultraviolet fluorescence online monitor (output signal 4~ 20mA), the outlet lift of multistage centrifugal pump is 50m, the rated current is 2.7A, the outlet pressure of pressure reducing valve is less than 0.06Mpa, the discharge pressure of safety valve is 0.1Mpa, and the rated current of electric heat tracing is 2A.

[0033] The results of monitoring for 60 days showed that the online monitoring device was working normally, and the reading of the ultraviolet fluorescence monitor was stable and close to zero, indicating that there was no styrene monomer in the water in the pipeline, and no leakage accident occurred.

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PUM

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Abstract

The invention relates to a device for monitoring the content of organic matters in circulating water in an anti-explosion area on line. The device sequentially comprises an inlet valve, a pressure reducing valve, a monitor inlet valve, a monitor, a centrifugal pump, a check valve and an outlet valve, wherein the parts and a circulating pipeline form a monitoring loop; the monitor is arranged in an anti-explosion box; a sampling valve is arranged on a pipeline between the monitor inlet valve and the monitor; a bypass pipeline with a regulating valve is arranged at the front end of the monitor inlet valve and the front end of a centrifugal pump inlet; a pressure meter is arranged on a pipeline between the outlet valve and the check valve; and a safety valve is arranged on a pipeline between the centrifugal pump inlet and a monitor outlet. The device can monitor hydrocarbon media with more than six carbon atoms, hydrocarbons and benzene rings with unsaturated bonds, alcohols and ethers with hydrogen bonds, and the like in a circulating water system on line. The whole device is safe, has a wide monitor application range, is easy to remotely control, and is particularly suitable for monitoring the water quality of a circulating water pipeline in a petrochemical enterprise on line and timely determining the leakage of a water cooler.

Description

technical field [0001] The invention relates to an online monitoring device for the content of organic matter in circulating water, which belongs to the technical field of measuring the content of organic matter in circulating water in explosion-proof areas of petrochemical enterprises. Background technique [0002] Because there are a lot of water coolers in petrochemical enterprises, the demand for circulating water is huge. During the circulating heat exchange process, the circulating water needs to be returned to the water plant for treatment to discharge excess heat, and reagents are added to control its turbidity, ion content and COD, and the treated circulating water is returned to the heat exchanger. In the circulation process, there are a large number of pipelines connecting the water plant and the water cooler. Most of these pipelines are outdoors, have a certain pressure, and are in flammable and explosive areas. [0003] Leakage of water coolers is a common prob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/33G01N21/64G01N21/17G01M3/32
Inventor 陈镇党杰刘吉杨明德宋莹华胡湖生吴玉龙
Owner TSINGHUA UNIV
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