CN103851953A - Independent mini-flow circulation type chemical descaling method of tubular heat exchanger - Google Patents
Independent mini-flow circulation type chemical descaling method of tubular heat exchanger Download PDFInfo
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- CN103851953A CN103851953A CN201410120581.2A CN201410120581A CN103851953A CN 103851953 A CN103851953 A CN 103851953A CN 201410120581 A CN201410120581 A CN 201410120581A CN 103851953 A CN103851953 A CN 103851953A
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- heat exchanger
- cleaning
- chemical descaling
- connecting hose
- circulation type
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Abstract
The invention relates to an independent mini-flow circulation type chemical descaling method of a tubular heat exchanger. The method is characterized in that a special quick pipe connector and a special connecting hose are formed according to the dimension of a heat change pipe in the heat exchanger, and then all heat exchange pipes are divided into a plurality of parts based on the actual demands; part of the heat exchange pipes are connected in series through the quick pipe connector and the connecting hose each time so as to form an independent min-circulating washing system; a washing agent is added to the circulating washing system; washing liquid medicine only circularly flows in the heat exchange pipes and is not directly contacted with a parent circulating water pipe and the inner wall of a water chamber. According to the independent mini-flow circulation type chemical descaling method of the tubular heat exchanger, the chemical descaling of the single tubular heat exchanger is carried out in batches; the washing liquid medicine can be recycled; and therefore, the method has the advantages of being low in cost, high in efficiency, high in pertinence, small in risk, and the like and has the energy-saving and environmentally-friendly effects.
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 current theme of energy consumption enterprise greatly.As the pipeline-cleaning scale removal of thermal power plant condenser, be the difficult problem that industry energy conservation lowers consumption, raises the efficiency to large tubular heat transmission equipment.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, also do not find a kind of more efficiently low cleaning agent consumption, low-risk chemical cleaning method.
Summary of the invention
The object of the invention is to overcome above-mentioned defect, provide one do not need to change its inner loop water channel (hydroecium) structure, cleaning agent consumption minimum, clean the few heat exchange tube of condenser water side chemical cleaning method of discharging of waste liquid treating capacity.
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, 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 tubes are divided into some parts, each only 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, clean liquid and only in heat exchanger tube, circulate, fouling is dissolved, peeled off, and directly do not contact circulation jellyfish pipe and hydroecium inwall; This emits storage by cleaning liquid after cleaning, and waits until the scale removal of next part heat exchanger tube and uses, and cleaning liquid can reuse.
The remarkable difference of the present invention and conventional clean method is, the internal heat exchange tubes of Heat Exchanger is separated into multiple parts, and each wherein part of only cleaning, emits storage by cleaning liquid, gives over to the scale removal of next part heat exchanger tube and uses.Clean liquid fast at the inner flow velocity of heat exchanger tube, scale removal efficiency is high, and its use amount is 35% left and right of conventional method, has reduced to a great extent and has cleaned the pollution of waste liquid to environment, therefore has that cost is low, efficiency is high, an advantage such as with strong points, energy-conserving and environment-protective.
Brief description of the drawings
Fig. 1
for 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 the parts such as medicine valve 4, point header 5, quick coupling and 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, every group of 3000 left and right, connect heat exchanger tube to be cleaned 8 by quick coupling and connecting hose 6.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.
While preparing to clean, according to pipe arrangement schematic diagram, only wherein a part of heat exchanger tube is arranged on condenser 7 two end plate heat exchange mouths of pipe by quick coupling and connecting hose 6, and series connection forms independently partial circulating scavenger circuit, and its installation requirement pipeline, valve within the scope of design pressure connect without leak source.Give the interior injection clear water of dispensing box 1 and cleaning agent, ON cycle water pump 2, regulating water inlet valve 3, is controlled at 5 kg/cm system pressure
2below, operation 20min carries out leak source inspection, seals fastening processing if any leakage.Select applicable cleaning agent according to fouling composition, such as sulfamic acid, polyacrylic acid, Lan-826 corrosion inhibiter etc., clean liquor strength according to slightly difference of the thickness of its fouling, general control is 3～5%.Cleaning temperature is normal temperature, and the time of each wash cycles rests in 4～6 hours, after cleaning, cleaning liquid is emitted to storage, wait until the scale removal of next part heat exchanger tube and continue to use, generally according to its in-tube fouling degree, clean liquid and can reuse 2～3 times.
Repeat above step until heat exchange tube of condenser has all cleaned, cleaning process monitoring and clean endpoint are confirmed 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 possessing, can also under the prerequisite that does not depart from aim of the present invention, make other various variations at affiliated technical field those of ordinary skill.
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 tubes are divided into some parts, each only 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, clean liquid and only in heat exchanger tube, circulate, fouling is dissolved, peeled off, and directly do not contact circulation jellyfish pipe and hydroecium inwall;
After C, this cleaning, cleaning liquid is emitted to storage, wait until the scale removal of next part heat exchanger tube and use, cleaning liquid can reuse.
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 true CN103851953A (en) | 2014-06-11 |
| CN103851953B CN103851953B (en) | 2015-12-09 |
Family
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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 |
|---|---|
| CN (1) | CN103851953B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949571A (en) * | 2015-06-17 | 2015-09-30 | 彭伟 | Method and device for zero-release online accurate chemical cleaning of tubular 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 (6)
| 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 |
| CN101608882A (en) * | 2009-07-22 | 2009-12-23 | 瓮福（集团）有限责任公司 | The method that a kind of condenser copper tube cleans |
| 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 |
-
2014
- 2014-03-28 CN CN201410120581.2A patent/CN103851953B/en not_active Ceased
Patent Citations (6)
| 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 |
| CN101608882A (en) * | 2009-07-22 | 2009-12-23 | 瓮福（集团）有限责任公司 | The method that a kind of condenser copper tube cleans |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949571A (en) * | 2015-06-17 | 2015-09-30 | 彭伟 | Method and device for zero-release online accurate chemical cleaning of tubular heat exchanger |
| CN104949571B (en) * | 2015-06-17 | 2018-06-26 | 彭伟 | The online precise chemical structure cleaning method and device of a kind of tubular heat exchanger zero-emission |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103851953B (en) | 2015-12-09 |
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Decision date of declaring invalidation: 20181025 Decision number of declaring invalidation: 37508 Granted publication date: 20151209 |