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A descaling process for thousands of cubic fillers in cooling towers of power plants

A technology of cooling towers and power plants, applied in the field of descaling technology, can solve the problems of costing financial resources and manpower, and achieve the effects of improving utilization efficiency, preventing corrosion, and achieving good effect of scale inhibition

Active Publication Date: 2021-12-03
刘新存
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many descaling methods for small cooling towers of several cubic meters in China, but there is basically no solution for large cooling towers of 1000-2000 cubic meters in power plants. In the prior art, for 1000-2000 cubic meters The method of descaling of large cooling water towers is generally to replace them all or move them out for pickling, which consumes a lot of money and manpower

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A process for descaling thousands of cubic fillers of cooling towers in power plants, comprising the following steps:

[0021] S1: Prepare raw materials: choose sodium polyacrylate 20%, sodium hexametaphosphate 10%, sulfamic acid 5.5%, ethylenediaminetetraacetic acid 3.3%, fatty alcohol polyoxyethylene ether 2.5%, corrosion inhibitor 1.85%, penetrant 1.53%, the balance is deionized water as a raw material for standby;

[0022] S2: Prepare a moderately acidic mixed solution: according to the ratio of raw materials in S1, add each raw material into the reaction tank in turn, stir at a speed of 200r / min for 20 minutes, stir until the liquid is evenly mixed, and obtain a moderately acidic mixed solution;

[0023] S3: Descaling of cooling tower packing: the specific operation is divided into the following two stages:

[0024] The first stage: remove surface dirt: 48 hours before shutting down, add KS-370 type bactericide and algicide of 0.9 / 10,000 of the total circulating w...

Embodiment 2

[0029] A process for descaling thousands of cubic fillers of cooling towers in power plants, comprising the following steps:

[0030] S1: Prepare raw materials: choose sodium polyacrylate 30%, sodium hexametaphosphate 20%, sulfamic acid 8.2%, ethylenediaminetetraacetic acid 5.6%, fatty alcohol polyoxyethylene ether 3.5%, corrosion inhibitor 2.12%, penetrant 2.35%, the balance is deionized water as a raw material for standby;

[0031] S2: Prepare a moderately acidic mixed solution: according to the ratio of raw materials in S1, add each raw material into the reaction tank in turn, stir at a speed of 240r / min for 30 minutes, stir until the liquid is evenly mixed, and obtain a moderately acidic mixed solution;

[0032] S3: Descaling of cooling tower packing: the specific operation is divided into the following two stages:

[0033] The first stage: remove surface dirt: 48 hours before shutting down, add KS-370 type bactericide and algicide which is 1 / 10,000 of the total circulati...

Embodiment 3

[0038] A process for descaling thousands of cubic fillers of cooling towers in power plants, comprising the following steps:

[0039] S1: Prepare raw materials: choose sodium polyacrylate 20%, 25%, sodium hexametaphosphate 20%, sulfamic acid 5.5%, ethylenediaminetetraacetic acid 5.6%, fatty alcohol polyoxyethylene ether 3.5%, corrosion inhibitor 1.85% , penetrant 2.35%, and the balance is deionized water as raw material for standby;

[0040] S2: Preparation of a moderately acidic mixed solution: according to the ratio of raw materials in S1, each raw material is sequentially added to the reaction tank, stirred at a speed of 220r / min for 25 minutes, and stirred until the liquid is evenly mixed to obtain a moderately acidic mixed solution;

[0041] S3: Descaling of cooling tower packing: the specific operation is divided into the following two stages:

[0042] The first stage: remove surface dirt: 48 hours before shutting down, add KS-370 type bactericide and algicide of 1 / 10,0...

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PUM

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Abstract

A process for descaling thousands of cubic fillers of cooling towers in power plants, comprising the following steps: preparing raw materials, preparing moderately acidic mixed liquid, and descaling cooling tower fillers; the process of the present invention is more scientific and reasonable, and various acidic solutions are used in the present invention The equipped descaling agent can quickly remove the scaling in the packing of the cooling tower, and can clean the scaling more thoroughly. At the same time, it can play a role of scale inhibition for a long time. The scale inhibition effect is good, and the utilization efficiency of the packing of the cooling tower can be greatly improved. , the use of pickling chemical descaling process is simple, quick, and low cost. During the on-site descaling process, the added corrosion inhibitor can prevent the corrosion of the inner wall of the cooling tower, and at the same time avoid precipitation after descaling, which is worth promoting.

Description

technical field [0001] The invention relates to the technical field of descaling technology, in particular to a descaling process of thousand cubic fillers for cooling towers of power plants. Background technique [0002] A cooling tower is a device that uses water as a circulating coolant to absorb heat from a system and discharge it to the atmosphere to reduce the water temperature; its cooling is to use water and air to exchange heat and cold to generate steam, and the steam evaporates to take away heat to achieve evaporation The principle of heat dissipation, convective heat transfer and radiation heat transfer is used to dissipate the waste heat generated in industry or in refrigeration and air conditioning to reduce the water temperature. The evaporative cooling device is used to ensure the normal operation of the system. The device is generally barrel-shaped, so it is called a cooling tower. Cooling towers are often used in power plants. The fillers in cooling towers ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28G9/00C11D1/72C11D3/60C11D3/04C11D3/06C11D3/33C11D3/37C02F1/50
CPCF28G9/00C11D1/72C11D3/06C11D3/042C11D3/33C11D3/3765C11D3/0073C02F1/50C02F2103/023C11D3/37C02F2303/08C02F5/14
Inventor 刘新存
Owner 刘新存
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