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Method for monitoring drifting salt deposition of seawater cooling tower
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Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A cooling tower, salt deposition technology, applied in the direction of analysis of materials, instruments, etc.
Inactive Publication Date: 2015-06-10
TIANJIN SEA WATER DESALINATION & COMPLEX UTILIZATION INST STATE OCEANOGRAPHI
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[0004] At present, scholars at home and abroad have less research on the salt deposition of floating droplets in seawater circulating cooling towers, and more focus on numerical simulation
Method used
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Embodiment 1
[0064] according to figure 1 The monitoring method flow chart in the medium is operated in sequence, and the specific process is as follows:
[0065] Taking two large naturally ventilated seawater cooling towers of a power plant in the south as an example, the salt deposition monitoring of seawater cooling tower droplets was carried out in September 2013.
[0066] A. According to the attached figure 1 In the flow chart of the monitoring scheme, the numerical calculation of the SACTI model is firstly carried out in combination with the local meteorological parameters and the parameters of the seawater cooling tower, which specifically includes the following steps:
[0067] 1. Use the WRF model system to simulate the meteorological conditions around the power plant. The specific parameters are as follows:
[0068] During the experimental monitoring period (September 2013), that is, within 30 days from September 1, 2013 to September 30, 2013, the average temperature during the ...
Embodiment 2
[0100] The same method used in Example 1 is used to detect the amount of salt deposition, the only difference is that in this embodiment, the monitoring is performed when the seawater cooling tower is operated as a single tower, and the parameters of the single tower are shown in Table 4.
[0101] Table 4 Embodiment 2 Cooling Tower Related Calculation Parameters
[0103] The monitoring time for a single tower was October 2013. During the monitoring period, the average temperature was 19.8°C, the average humidity was 53%, the average wind speed was 5.2m / s...
Embodiment 3
[0111] In this embodiment, the simulated values of Embodiment 1 are corrected:
[0112] 1. Correct the meteorological parameter value. During the monitoring period in September 2013, the average temperature was corrected to 23.5°C, the average humidity was corrected to 50%, the average wind speed was corrected to 5.4m / s, and the dominant wind direction was NNW (north-northwest).
[0113] After the result is simulated by the SACTI calculation program, compared with the monitoring values of the test points in Example 1, the average relative deviation of the 10 monitoring points is 8.5%.
[0114] 2. Correct WRF calculation parameters, the meteorological model integration step is changed from 120s to 30s, and the horizontal grid distance is changed from 9km to 3km. After simulating the result with the SACTI calculation program, and comparing it with the monitoring values of the test points in Example 1, it can be obtained that the average relative deviation error of the 10 ...
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Abstract
The invention relates to the technical field of seawater cooling towers, in particular to a method for monitoring the drifting salt deposition of a seawatercooling tower. The monitoring method comprises the following steps: (1) simulating the meteorological condition in a to-be-detected region, and carrying out numerical simulation on the drifting salt deposition of the seawatercooling tower; (2) combining a numerical simulation result with a geographical environment to draw up a point distribution scheme, and determining a monitoring site through field investigation; (3) placing a sedimentation collection device on the monitoring site, and carrying out sample collection of the drifting salt deposition by adopting a wet sedimentation method; and (4) detecting chlorideion concentration in the sample, and converting the monthly salt deposition volume of different monitoring sites. The method is scientific, effective, high in maneuverability, and good in stability; and the drifting salt deposition of the seawater cooling tower can be accurately reflected by the monitoring result.
Description
technical field [0001] The invention relates to the technical field of seawater cooling towers, mainly to the technical field of environmental monitoring of seawater cooling towers with natural ventilation or mechanical ventilation, and in particular to a method for monitoring salt deposition in seawater cooling towers. Background technique [0002] The seawater cooling tower is the key equipment in the seawater circulation cooling system. Salt deposition caused by floating water in cooling towers is one of the main problems in the use of seawater cooling towers. It will not only corrode peripheral equipment and buildings, but also affect the growth of nearby vegetation and destroy the ecological environment. In fact, this is also an important reason why the use of seawater circulation cooling technology is limited. With the promotion and application of seawater cooling towers and the increasing emphasis on environmental protection in recent years, it is imminent to study t...
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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/04
Inventor 张连强李明李雪王印忠尹建华
Owner TIANJIN SEA WATER DESALINATION & COMPLEX UTILIZATION INST STATE OCEANOGRAPHI
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