Water cooler on-line backwashing method

A technology of backwashing and water coolers, applied in the direction of flushing, sustainable manufacturing/processing, climate sustainability, etc., can solve problems such as production and operation shutdown of water coolers, increase pressure and impact, ensure quality, and improve The effect of the heat transfer effect

Active Publication Date: 2014-01-08
QITAIHE BAOTAILONG METHANOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the regular flushing of the water cooler by stopping the system operation will bring downtime to the production operation, and to provide an online backwashing method for the water cooler

Method used

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  • Water cooler on-line backwashing method

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specific Embodiment approach 1

[0014] Specific implementation mode one: combine figure 1 Illustrate this embodiment, the method for online backwashing of a kind of water cooler described in this embodiment, it comprises concrete steps as follows:

[0015] Step 1. Simultaneously close the circulating water valve and the circulating water return valve of the water cooler;

[0016] Step 2. Drain the circulating water in the water cooler with a drainer. After N hours, open the circulating water return valve and put in water with 5% to 10% of the volume of the condenser tube of the water cooler, then close the circulating water return valve for 3 to 5 minutes and then Open the backwash drain gate valve for 110-30s, then close the backwash drain gate valve 1. Open the circulating water return valve for backwash; N is a natural number;

[0017] Step 3: Open the backwash drainage gate valve 1, and judge whether the water flowing out of the gate valve is clear, if not, perform step 3; if yes, end;

[0018] Wherein...

specific Embodiment approach 2

[0020] Specific implementation mode two: combination figure 1 This embodiment is described. This embodiment is a further limitation of the online backwashing method of the water cooler described in the first embodiment. The backwashing drainage gate valve 1 adopts a DN100 valve.

[0021] The methanol vapor is condensed into methanol condensate through the water cooler, the output end of the methanol condensate of the water cooler is connected to the input end of the methanol condensate recovery tank, and the input end of the methanol condensate recovery tank is set below the methanol condensate liquid level.

specific Embodiment approach 3

[0022] Specific implementation mode three: combination figure 1 This implementation mode is described. This implementation mode is a further limitation of the method for online backwashing of a water cooler described in the first specific implementation mode, where 1

[0023] The concrete process that the present invention applies is:

[0024] Install backwash drainage gate valve 1 on the circulating water pipeline behind the circulating water supply valve of the water cooler for backwash drainage of the water cooler.

[0025] During the backwashing operation, firstly close the circulating water supply valve and the circulating water return valve of the water cooler. Drain the circulating water in the water cooler with a drainer.

[0026] Methanol vapor is normally fed into the water cooler to heat the impurities on the tube wall of the water cooler. After heating for 1 to 3 hours, the circulating water return valve is opened, and the water entering the water cooler tub...

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Abstract

The invention provides a water cooler on-line backwashing method, and relates to a water cooler washing method. The water cooler on-line backwashing method solves the problem that in the prior art, shutting down is brought to the production operation due to the fact that a water cooler needs to be regularly washed by stopping a system from running. The method includes the steps of firstly, simultaneously closing a circulating water feed valve on the water cooler and a circulating water return valve on the water cooler; secondly, emptying circulating water in the water cooler through a drain, feeding water accounting for 5% to 10% of the volume of a condenser pipe of the water cooler N hours later, then, keeping the circulating water return valve closed for 3min to 5min, keeping a backwashing water drainage gate valve open for 10s to 30s, and closing the backwashing water drainage gate valve and opening the circulating water return valve to conduct backwashing; thirdly, opening the backwashing water drainage gate valve, judging whether water flowing out of the gate valve is clean or not, if not, executing the third step, and if yes, ending the procedures, wherein the backwashing water drainage gate valve is arranged on the portion, between the water cooler and the water cooler circulating water feed valve, of a circulating water pipeline. The water cooler on-line backwashing method is suitable for washing the water cooler on line.

Description

technical field [0001] The invention relates to a method for flushing a water cooler. Background technique [0002] At present, after a long-term operation of the rectification atmospheric tower water cooler in methanol production, there are many impurities, algae residues, scale and other substances in the circulating water, which are precipitated and adsorbed on the tube wall of the water cooler, resulting in poor heat transfer effect of the water cooler. And directly affect the quality of methanol products. [0003] And stopping the system to run the regular flushing of the water cooler will bring downtime loss to the production operation. Contents of the invention [0004] The purpose of the present invention is to solve the problem that the regular flushing of the water cooler by stopping the operation of the existing system will bring downtime to the production operation, and provide an online backwashing method for the water cooler. [0005] A method for online ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28G9/00
CPCY02P80/10
Inventor 李怀建张丽刘家兴王新嘉王晓飞张宏赫长坤张福友王中兴
Owner QITAIHE BAOTAILONG METHANOL
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