CN103851953B - Pipe heat exchanger independence low discharge cyclic chemical descaling method - Google Patents
Pipe heat exchanger independence low discharge cyclic chemical descaling method Download PDFInfo
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- CN103851953B CN103851953B CN201410120581.2A CN201410120581A CN103851953B CN 103851953 B CN103851953 B CN 103851953B CN 201410120581 A CN201410120581 A CN 201410120581A CN 103851953 B CN103851953 B CN 103851953B
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- heat exchanger
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- exchanger tube
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- quick coupling
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Abstract
The present invention relates to pipe heat exchanger independence low discharge cyclic chemical descaling method, special quick coupling and connecting hose is made according to the size of heat exchanger internal heat exchange tubes, according to actual needs whole heat exchanger tube is divided into some parts, each only by wherein a part of heat exchanger tube quick coupling and connecting hose series connection form independently partial circulating purging system.Add cleaning agent to circulation cleaning system, cleaning liquid only at heat exchanger tube internal circulation flow, and does not directly contact circulation jellyfish pipe and hydroecium inwall.The chemical cleaning of separate unit pipe heat exchanger is divided into multiple batches of carrying out by the present invention, and cleaning liquid can reuse, and has the advantages such as cost is low, efficiency is high, with strong points, risk is little, energy-conserving and environment-protective.
Description
Technical field
The present invention relates to a kind of Novel washing method in large tubular heat transmission equipment Chemical cleaning field, be particularly useful for the chemical cleaning of thermal power plant condenser equipment.
Background technology
Along with the proposition of nation-building " amphitypy " society, reduce energy consumption, enhancing efficiency by relying on tapping internal latent power is the theme of current large energy consumption enterprise.To the pipeline-cleaning scale removal of large tubular heat transmission equipment as thermal power plant condenser, it is the difficult problem that industry energy conservation lowers consumption, raises the efficiency.Traditional chemical cleaning method is as soaking and washing or overall wash cycles, and because technique falls behind, these methods all exist needs closed circulation water channel (hydroecium), destroy the defects such as line with rubber, cleaning agent consumption is large, discharging of waste liquid treating capacity is large.Up to the present, a kind of more efficiently low cleaning agent consumption, low-risk chemical cleaning method is not also found.
Summary of the invention
The object of the invention is to overcome above-mentioned defect, provides the heat exchange tube of condenser water side chemical cleaning method that one does not need to change its inner loop water channel (hydroecium) structure, cleaning performance is good, cleaning agent consumption is minimum, cleaning discharging of waste liquid treating capacity is few.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of pipe heat exchanger independence low discharge cyclic chemical descaling method, special quick coupling and connecting hose is made according to the size of heat exchanger internal heat exchange tubes, according to actual needs whole heat exchanger tube is divided into some parts, each only by wherein a part of heat exchanger tube employing quick coupling and connecting hose series connection form independently partial circulating purging system; Add cleaning agent to circulation cleaning system, fouling, only at heat exchanger tube internal circulation flow, is dissolved, is peeled off, and directly do not contact circulation jellyfish pipe and hydroecium inwall by cleaning liquid; After this cleaning, will clean liquid and release storage, and wait until the scale removal of next part heat exchanger tube and use, cleaning liquid can reuse; Select sulfamic acid or polyacrylic acid or Lan-826 corrosion inhibiter as cleaning agent according to fouling components, concentration is 3 ~ 5%, and temperature is normal temperature, and each wash cycles time is 4 ~ 6 hours.
The remarkable difference of the present invention and Conventional cleaning methods is, the internal heat exchange tubes of Heat Exchanger is separated into multiple part, and each only cleaning wherein part, will clean liquid releasing and store, and give over to the scale removal of next part heat exchanger tube and use.Cleaning liquid is fast at the inner flow velocity of heat exchanger tube, scale removal efficiency is high, descale effect is desirable, and its use amount is about 35% of conventional method, reduces cleaning waste liquid to a great extent to the pollution of environment, therefore have that cost is low, efficiency is high, the advantage such as effective, energy-conserving and environment-protective.
Accompanying drawing explanation
Fig. 1 is circulation cleaning system general arrangement of the present invention.
Fig. 2 is condenser internal heat exchange tubes series connection schematic diagram.
Detailed description of the invention
As shown in Figure 1, circulation cleaning system general layout of the present invention comprises dispensing box 1, water circulating pump 2, pressure-regulating valve 3, puts medicine valve 4, point header 5, quick coupling and the part such as connecting hose 6, condenser 7, system flow 20 ~ 40m
3/ h, flow velocity 0.5 ~ 2m/s, pressure-bearing pressure 8kg/cm
2, operating pressure 3kg/cm
2left and right.
As shown in Figure 2, according to condenser end plate heat exchanger tube layout drawing, internal heat exchange tubes is divided into groups, and draw pipe arrangement schematic diagram.Generally the heat exchanger tube of separate unit condenser is divided into 4 ~ 6 groups, often organizes about 3000, by quick coupling and connecting hose 6, heat exchanger tube 8 to be cleaned is connected.A set of circulation cleaning system cleans one group of heat exchanger tube, according to construction period, can overlap circulation cleaning system more and carry out simultaneously.
When preparing cleaning, according to pipe arrangement schematic diagram, only wherein a part of heat exchanger tube quick coupling and connecting hose 6 will be arranged on condenser 7 two end plate heat exchange mouth of pipe, series connection forms independently partial circulating scavenger circuit, and its installation requirement pipeline, valve within the scope of design pressure connect without leak source.To injected clear water and cleaning agent in dispensing box 1, ON cycle water pump 2, regulating water inlet valve 3, controls system pressure at 5kg/cm
2below, run 20min and carry out leak source inspection, carry out sealing fastening process if any leakage.Select applicable cleaning agent according to fouling components, such as sulfamic acid, polyacrylic acid, Lan-826 corrosion inhibiter etc., cleaning liquor strength is according to the thickness of its fouling slightly difference, and general control is 3 ~ 5%.Cleaning temperature is normal temperature, and the time of each wash cycles rests in 4 ~ 6 hours, after cleaning, liquid will be cleaned and release storage, wait until the scale removal of next part heat exchanger tube to continue to use, generally according to its in-tube fouling degree, cleaning liquid can reuse 2 ~ 3 times.
Repeat above step until heat exchange tube of condenser has all cleaned, cleaning process monitoring and clean endpoint confirm to carry out with reference to power industry standard DL/T791-2001 " heat power plant boiler Chemical cleaning directive/guide ".
The present invention is not limited to above-mentioned embodiment, in the ken that art those of ordinary skill possesses, can also make other various changes under the prerequisite not departing from present inventive concept.
Claims (1)
1. a pipe heat exchanger independence low discharge cyclic chemical descaling method, is characterized in that:
A, make special quick coupling and connecting hose according to the size of heat exchanger internal heat exchange tubes, according to actual needs whole heat exchanger tube is divided into some parts, each only by wherein a part of heat exchanger tube employing quick coupling and connecting hose series connection form independently partial circulating purging system;
B, add cleaning agent to circulation cleaning system, fouling, only at heat exchanger tube internal circulation flow, is dissolved, is peeled off, and directly do not contact circulation jellyfish pipe and hydroecium inwall by cleaning liquid;
After C, this cleaning, will clean liquid and release storage, and wait until the scale removal of next part heat exchanger tube and use, cleaning liquid can reuse;
D, select sulfamic acid or polyacrylic acid or Lan-826 corrosion inhibiter as cleaning agent according to fouling components, concentration is 3 ~ 5%, and temperature is normal temperature, and each wash cycles time is 4 ~ 6 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410120581.2A CN103851953B (en) | 2014-03-28 | 2014-03-28 | Pipe heat exchanger independence low discharge cyclic chemical descaling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410120581.2A CN103851953B (en) | 2014-03-28 | 2014-03-28 | Pipe heat exchanger independence low discharge cyclic chemical descaling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103851953A CN103851953A (en) | 2014-06-11 |
| CN103851953B true CN103851953B (en) | 2015-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410120581.2A Ceased CN103851953B (en) | 2014-03-28 | 2014-03-28 | Pipe heat exchanger independence low discharge cyclic chemical descaling method |
Country Status (1)
| Country | Link |
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| CN (1) | CN103851953B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949571B (en) * | 2015-06-17 | 2018-06-26 | 彭伟 | Zero-emission online accurate chemical cleaning method and device for tube heat exchanger |
| CN106959257A (en) * | 2017-05-19 | 2017-07-18 | 天津亿利科能源科技发展股份有限公司 | A kind of method of laboratory evaluation crude oil gathering pipelines scale remover |
| CN107178776A (en) * | 2017-07-26 | 2017-09-19 | 好太太电器（中国）有限公司 | A kind of steam raising plant and smoke exhaust ventilator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58205097A (en) * | 1982-05-25 | 1983-11-29 | Sumitomo Precision Prod Co Ltd | Heat exchanger for geothermal water |
| JPH09203599A (en) * | 1996-01-26 | 1997-08-05 | Toshiba Corp | Cleaning device for plate type heat exchanger |
| CN101122452A (en) * | 2007-08-17 | 2008-02-13 | 孙德兴 | Shell and tube heat exchanger heat-exchanging tube bundle high pressure head mighty strength alternating flushing contamination-ridding method and device |
| CN201697534U (en) * | 2010-06-18 | 2011-01-05 | 北京石油化工学院 | On-line cleaning device for oil dirt type dirt heat exchanger |
| CN103673747A (en) * | 2012-09-07 | 2014-03-26 | 王刚 | Fast washing equipment for large-size heat exchangers and washing method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101608882B (en) * | 2009-07-22 | 2010-12-01 | 瓮福（集团）有限责任公司 | Method for cleaning copper tubes of condenser |
-
2014
- 2014-03-28 CN CN201410120581.2A patent/CN103851953B/en not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58205097A (en) * | 1982-05-25 | 1983-11-29 | Sumitomo Precision Prod Co Ltd | Heat exchanger for geothermal water |
| JPH09203599A (en) * | 1996-01-26 | 1997-08-05 | Toshiba Corp | Cleaning device for plate type heat exchanger |
| CN101122452A (en) * | 2007-08-17 | 2008-02-13 | 孙德兴 | Shell and tube heat exchanger heat-exchanging tube bundle high pressure head mighty strength alternating flushing contamination-ridding method and device |
| CN201697534U (en) * | 2010-06-18 | 2011-01-05 | 北京石油化工学院 | On-line cleaning device for oil dirt type dirt heat exchanger |
| CN103673747A (en) * | 2012-09-07 | 2014-03-26 | 王刚 | Fast washing equipment for large-size heat exchangers and washing method |
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| Publication number | Publication date |
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| CN103851953A (en) | 2014-06-11 |
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Decision date of declaring invalidation: 20181025 Decision number of declaring invalidation: 37508 Granted publication date: 20151209 |
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