System and method for monitoring scaling rate and deposition rate of circulating cooling water

Abstract

The invention provides a system and a method for monitoring the scaling rate and the deposition rate of the circulating cooling water. The monitoring system comprises two loop systems, wherein suspended matters, microorganisms, colloids and other substances in the water can be separated and removed from the water by a loop system where an ultrafiltration device is located, a scaling rate is testedby utilizing residual ions, ions in the water can be separated and removed from the water by a loop system where an electrodialysis device is located, and the deposition rate is tested by utilizing residual microorganisms, organic matters and colloid. according to the monitoring method, a heat transfer coefficient is calculated through a plurality of sets of test data, then expectation of the heat transfer coefficient is obtained, then the linear relation between the mass variation and the heat transfer coefficient is obtained, and the scaling rate and the deposition rate can be calculated online in real time in combination with a temperature sensor, a flow sensor and an industrial computer. The test device is simple, the test method is high in theoretical property, and real effectivenessof test data is fully met.

Description

Technical field [0001] The invention relates to the technical field of industrial circulating cooling water treatment, in particular to a monitoring system and a monitoring method for circulating cooling water scaling rate and deposition rate. Background technique [0002] Water is an important resource for human survival and development. At the same time, water is also a limited and irreplaceable resource. In recent years, with the development of the economy, water consumption has increased dramatically, and the pollution of the global water environment has become increasingly serious. my country is a water-scarce country, with less than 2,200 cubic meters of water per capita. The water-saving situation is imminent. In the "Eleventh Five-Year Plan", it is clearly stated that the unit water intake of major products in high energy consumption industries such as thermal power, steel, petroleum and petrochemical, and papermaking will drop by an average of 20%-40%. [0003] As a maj...

AI Technical Summary

Problems solved by technology

For the circulating cooling water system, the static test can determine the degree of fouling, but it cannot fully simulate the state of the circulating cooling water system in the dynamic process

Some manufacturers and research institutes have dynamic simulation equipment, and use dynamic simulation equipment to simulate the operation of the circulating cooling water system. By monitoring the thermal resistance of dirt and calculating the rate of change of thermal resistance of dirt, the rate of dirt deposition can be judged; it is impossible to distinguish the deposits that affect the thermal resistance of dirt Is it due to scaling, microbes, corrosion, inorganic or organic deposits, etc.

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