Unlock instant, AI-driven research and patent intelligence for your innovation.

Cleaning method of stainless steel plate heat exchanger

A stainless steel plate and heat exchanger technology is applied in the cleaning field of stainless steel plate heat exchangers, which can solve the problems of affecting the use of heat exchangers, difficult to remove scale, and high corrosiveness of equipment. The effect of a short cleaning time

Inactive Publication Date: 2016-08-03
JIANGYIN YALONG HEAT TRANSFER EQUIP CO LTD
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of heat exchangers, the unique advantages of plate heat exchangers make it develop rapidly. The current method of cleaning plate heat exchangers is usually shutdown cleaning or online cleaning. etchant, but it is difficult to remove the hard scale and is more corrosive to the equipment; for online cleaning, the cleaning time is longer, which affects the use of the heat exchanger, and if the scale is thick, it is also difficult to clean. In this case, people need to find better cleaning methods to replace

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The present invention will be further described below in conjunction with the examples.

[0017] The cleaning method of a stainless steel plate heat exchanger is characterized in that it comprises the following steps:

[0018] (1) Connect the cleaning liquid tank and the cleaning pump to the heat exchanger that is shut down to be washed to form a closed circulatory system;

[0019] (2) Add the soaking liquid to the recirculatory system described in the above step (1), and soak the inside of the heat exchanger for 1.2 hours; the soaking liquid contains a dispersing chelating agent and a stripping agent, so Described dispersion chelating agent is that hydroxyethylene diphosphoric acid and polyacrylic acid are prepared according to the ratio of 2:1, and its concentration is 130mg / L; Described stripping agent is dodecyl dimethyl benzyl ammonium bromide and cetyl Dimethyl (2-sulfite) ethylammonium was prepared according to the ratio of 1:4, and its concentration was 120mg / L...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a cleaning method of a stainless steel plate heat exchanger. The cleaning method is characterized by comprising the following steps: (1) a stopped heat exchanger to be cleaned is connected with a cleaning liquid tank and a cleaning pump to form a closed circulating system; (2) dipping liquid is added in the circulating system in the step (1) for dipping the internal of the heat exchanger by 1.2-1.4 hours; (3) acid and a corrosion inhibitor are fed in the dipping liquid of the closing system in the step (2) to form cleaning liquid; and then, the pump cyclic acid washing is performed by 2-2.5 hours; and (4) the cleaning liquid finishing the cleaning effect in the step (3) uses alkali for adjusting the pH value to a neutral state; then, the emission is performed; and water is used for washing until acid liquid and residues in the heat exchanger are totally removed. The cleaning method of the stainless steel plate heat exchanger is simple and ordered in cleaning process, short in cleaning time, mild in used solvent, optimal in parameter matching and low in surface corrosion speed of stainless steel; and the cleaning degree is above 97%.

Description

technical field [0001] The invention relates to a cleaning method for a stainless steel plate heat exchanger. Background technique [0002] With the development of heat exchangers, the unique advantages of plate heat exchangers make it develop rapidly. The current method of cleaning plate heat exchangers is usually shutdown cleaning or online cleaning. etchant, but it is difficult to remove the hard scale and is more corrosive to the equipment; for online cleaning, the cleaning time is longer, which affects the use of the heat exchanger, and if the scale is thick, it is also difficult to clean. In this case, people need to find better cleaning methods to replace. Contents of the invention [0003] In view of the above problems, the object of the present invention is to provide a cleaning method for stainless steel plate heat exchangers which is convenient for cleaning, short in time, less corrosive to the heat exchanger, and environmentally friendly. [0004] The present...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C23G1/06C23G1/08C23G5/036
CPCC23G1/061C23G1/088C23G5/036
Inventor 庞澄龙
Owner JIANGYIN YALONG HEAT TRANSFER EQUIP CO LTD