CN104860403B - Liquid medicine for online cleaning of air separation workshop appliances and application method thereof - Google Patents
Liquid medicine for online cleaning of air separation workshop appliances and application method thereof Download PDFInfo
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- CN104860403B CN104860403B CN201510208748.5A CN201510208748A CN104860403B CN 104860403 B CN104860403 B CN 104860403B CN 201510208748 A CN201510208748 A CN 201510208748A CN 104860403 B CN104860403 B CN 104860403B
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- heat exchanger
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- liquefied ammonia
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Abstract
The invention relates to liquid medicine for online cleaning of air separation workshop appliances and an application method of the liquid medicine. The liquid medicine for online cleaning of the air separation workshop appliances comprises organic acid, corrosion inhibitors, penetrant, antifoaming agents and water. A method for online cleaning of the air separation workshop appliances through the liquid medicine comprises the technological steps that a cleaning system of a cleaning liquid storage tank and a cleaning multi-stage pump is established, water scale is cleaned away, and the system is recovered. The liquid medicine for online cleaning of the air separation workshop appliances is stable in chemical property, good in slow-release effect and high in scale dissolving capacity. The method for online cleaning of the air separation workshop appliances through the liquid medicine is simple in technology and low in cost. The corrosion hazard cannot be caused to the air separation workshop appliances including an air cooling tower and accessory devices of the air cooling tower, shutdown of an air separation workshop is not required, and product manufacturing is not affected.
Description
Technical field
The invention belongs to chemical cleaning technique field, be related to a kind of medicinal liquid for space division workshop appliance on-line cleaning and its
Using method.
Background technology
In space division workshop appliance (liquefied ammonia heat exchanger, spray distributor, air cooling tower etc.) daily production, due to being used with water
When constantly circulate and concentrate, the content of mineral substances in water is continuously increased, thus causing equipment scaling.Liquefied ammonia heat exchanger is once tie
Dirt, will substantially reduce the cooling effect of liquefied ammonia heat exchanger, reduces the low temperature discharge of liquefied ammonia heat exchanger；Spray distributor is once tie
Dirt, can lead to spray the bias current of distributor, cause hot-air to reduce with water at low temperature heat exchange efficiency；And exporting once occurs in air cooling tower
The situation of too high temperature of air, also can bring unnecessary trouble to subsequent production technique.In the past traditional sets to space division workshop
The standby method being carried out uses the Technolgy of High Pressure Water jet Cleaning, after liquefied ammonia heat exchanger is removed, reuses water under high pressure and enters
Row cleaning, period, the production to chemical products can cause huge loss due to needing to stop, simultaneously because spray distributor is no
Method dismounting, the problem of its fouling bias current and too high also not efficiently solved of air cooling tower outlet air temperature.Therefore, existing
Modern this area is necessary to develop a kind of medicinal liquid of space division workshop appliance on-line cleaning and its using method.
Content of the invention
It is an object of the invention to overcome traditional space division workshop appliance cleaning and descaling must stop, high cost, effect difference
Deficiency, provides the medicine for space division workshop appliance on-line cleaning that a kind of stable chemical nature, had good sustained release effect, solubility for scale are strong
Liquid, also provides a kind of method carrying out Hand scarf to space division workshop appliance using this on-line cleaning medicinal liquid, using this simultaneously
Bright described Hand scarf method will not produce corrosion danger to the space division workshop appliance including air cooling tower and its auxiliary device
Evil, need not stop in space division workshop, do not affect production.
The technical solution adopting for realizing above goal of the invention is as described below.
A kind of medicinal liquid for space division workshop appliance on-line cleaning, is made up of the raw material of substance of following weight percentage ratio:
Described organic acid is formic acid or hydroxyacetic acid or citric acid or sulfamic acid, described corrosion inhibiter be Wu Luotuo or
Oleoyl imidazoline or trihydroxy ethylamine oleate soap or lan-826, described penetrating agent is fatty alcohol-polyoxyethylene ether (jfc) or amber
Amber acid fat sodium sulfonate (fast t), described defoamer is tributyl phosphate or silicone defoamer.
The preparation method of this on-line cleaning medicinal liquid is: put into successively in the reserving liquid tank fill clear water organic acid, corrosion inhibiter,
Penetrating agent and defoamer, are obtained medicinal liquid finished product after stirring.
Constitute in the material composition of above-mentioned medicinal liquid, the effect of organic acid is with incrustation scale, chemical reaction to occur by it, will not
Molten incrustation scale is changed into the salt of solubility；The effect of corrosion inhibiter is suppression organic acid to space division workshop pipeline, the corrosion of system；Ooze
The effect of agent is to promote the contact with incrustation scale for the organic acid thoroughly；The effect of defoamer be suppression cleaning process in carbonate deposit with have
The foam that machine acid reaction produces, eliminates the difficulty that foam causes to follow-up air dry process.
More preferably percentage by weight raw material of substance formula is a group of on-line cleaning medicinal liquid of the present invention:
More preferably percentage by weight raw material of substance formula is another group of on-line cleaning medicinal liquid of the present invention:
More preferably percentage by weight raw material of substance formula is first group of on-line cleaning medicinal liquid of the present invention:
In the above-mentioned medicinal liquid for space division workshop appliance on-line cleaning, described silicone defoamer is poly- (diformazan
Radical siloxane -3- hydroxypropylmethyl siloxanes) polyoxyethylene ether, its molecular structural formula is
Following order is included using the method that above-mentioned on-line cleaning medicinal liquid carries out on-line cleaning use to space division workshop appliance
Processing step:
1) set up purging system
On liquid feeding pipeline between space division workshop fluid reservoir and liquefied ammonia heat exchanger one section in parallel by leading shower pipe a, cleaning storage
Liquid case, the cleaning multistage pump with self-loopa valve and the cleaning medicinal liquid transfer pipeline leading shower pipe b composition, liquefied ammonia heat exchanger
Drain pipe is coupled with the input of space division workshop air cooling tower top spray distributor, so set up space division workshop fluid reservoir,
Medicinal liquid purging system between liquefied ammonia heat exchanger and air cooling tower；
2) clean space division workshop appliance incrustation scale
Open and lead shower pipe a, fill the cleaning medicinal liquid of aforementioned component proportioning in cleaning reserving liquid tank, by certainly following of cleaning multistage pump
Ring valve door is opened, and circulates 10 minutes, is then slowly opened with the speed of per minute two circles and lead shower pipe b, make self-loopa valve opening
Maintain 10%, note cleanout fluid by leading shower pipe b to liquefied ammonia heat exchanger and spray distributor；Simultaneously in Central Control Room monitor closely
Flow through circulating water flow change, the leaving water temperature change of liquefied ammonia heat exchanger and the sky of air cooling tower top exit of liquefied ammonia heat exchanger
Gas temperature change；Treat that the circulating water flow of liquid nitrogen heat exchanger reaches 100m3/ h, liquefied ammonia heat exchanger leaving water temperature be 8.3 DEG C and
Stop cleaning during 12 DEG C of air cooling tower outlet air temperature ＜；
3) system recovery
Closing is led shower pipe a and is led shower pipe b, is then shut off cleaning multistage pump, removes multistage pump and the cleaning of cleaning reserving liquid tank
Medicinal liquid transfer pipeline, recovers the normal operation of space division workshop appliance.
Compared with prior art, present invention has the advantage that
First, the solubility for scale of on-line cleaning medicinal liquid of the present invention is strong, and cleaning process non-foam produces, to equipment corrosion ＜
1g/ * h, will not produce corrosion harmfulness to air cooling tower and its auxiliary device；
2nd, on-line cleaning medicinal liquid safety and environmental protection of the present invention, nontoxic to human body, cleanout fluid need not discharge, and can directly converge
Enter blood circulation, highly effective and safe；
3rd, the present invention is compared with conventional high-tension cleaning by high pressure water jet technology, and cleaning more thoroughly, not only can will be clear for liquefied ammonia heat exchanger
Spray distributor also can be cleaned up simultaneously, and the Technolgy of High Pressure Water jet Cleaning cannot be carried out to spray distributor by wash clean
Cleaning；
4th, medicinal liquid of the present invention be suitable for steel include common mild steel, steel alloy, drum steel such as 20a, 20g,
Sa299, bhw35, bhw38 etc., do not produce Hydrogen Brittleness Phenomena；
5th, the operational control to space division workshop appliance on-line cleaning method of the supporting offer of the present invention is simple and convenient, cost
Low, liquefied ammonia heat exchanger and spray distributor need not be removed in cleaning process, stop without space division workshop, will not be to chemical products
Production cause damage.
Brief description
Fig. 1 is a kind of structural representation for the supporting special space division workshop appliance on-line cleaning system of the present invention.
The title of in figure number designation is respectively: 1- spray distributor, 2- pump a, 3- fluid reservoir, 4- recirculated water supplies water
Main pipe, 5- pump b, 6- lead shower pipe a, 7- (multistage cleaning pump) self-loopa valve, the multistage cleaning pump of 8-, and 9- leads shower pipe b,
10- liquefied ammonia recuperator bypass valve, 11- liquefied ammonia heat exchanger, 12- hot-air, 13- goes recirculated water main pipe, 14- cold air,
15- cleans reserving liquid tank.
Specific embodiment
It is the cleaning example of a cleaning unit to present invention below in conjunction with accompanying drawing and with one group of space division workshop equipment
It is described further.
Embodiment 1
A kind of medicinal liquid for space division workshop appliance on-line cleaning, is made up of the raw material of substance of following percentage by weight, ammonia
Base sulfonic acid 10%, hexamethylenamine 0.5%, jfc (fatty alcohol-polyoxyethylene ether) 0.3%, tributyl phosphate 0.5%, water 88.7%.
Its preparation method is to put into sulfamic acid, hexamethylenamine, jfc and tricresyl phosphate fourth in the cleaning reserving liquid tank 15 fill clear water successively
Ester, is obtained medicinal liquid finished product after stirring.
The supporting space division workshop appliance on-line cleaning device of the present embodiment by be sequentially connected in series by pipeline lead shower pipe a (6),
Clean reserving liquid tank 15, the cleaning multistage pump 8 with self-loopa valve 7 and lead shower pipe b (9) composition, this device is connected in parallel on sky
Divide workshop 40000m3On liquid feeding pipeline between fluid reservoir 3 and liquefied ammonia heat exchanger 11.Cleaning reserving liquid tank 15 and air cooling tower 14 pass through
Pipeline connects into the water charging system of cleaning reserving liquid tank 15, and cleaning reserving liquid tank 15, cleaning multistage pump 8 and liquefied ammonia heat exchanger 11 pass through pipe
Road connects into the feed liquor system of cleaning medicinal liquid.Cleaning multistage pump 8 flow used in the present embodiment is 20m3/ h, lift 160m；
Cleaning reserving liquid tank 15 used is rustless steel container, and its volume is 4m3, upper vessel portion is provided with dosing mouth.
The on-line cleaning method of the present embodiment includes the processing step of following order:
1) set up purging system
It is sequentially connected and leads shower pipe a (6), cleaning reserving liquid tank 15, cleaning multistage pump (8) and lead shower pipe b (9), pouring will be led
The liquid feeding end of pipe a (6) and lead the liquid outlet of shower pipe b (9) respectively with the liquid outlet of fluid reservoir 3 and the inlet of liquefied ammonia heat exchanger 11
Connect the medicinal liquid purging system it is established that between space division workshop fluid reservoir, liquefied ammonia heat exchanger and air cooling tower；
2) clean incrustation scale
Injection cleaning medicinal liquid in cleaning reserving liquid tank 15, or by leading shower pipe a (6) first to cleaning reserving liquid tank 15 injection circulation
Water, the group assignment system that then the dispensing mouth in cleaning reserving liquid tank 15 is pressed in described cleaning medicinal liquid component proportion cleans medicinal liquid, respectively
It is organic acid → corrosion inhibiter → penetrating agent → defoamer that component adds the order of cleaning reserving liquid tank 15；Multistage pump 8 will be cleaned export
Self-loopa valve 7 open, open cleaning multistage pump 8 self-loopa 10 minutes, then slowly opened with the speed of per minute two circles
Lead shower pipe b (9), and self-loopa valve 7 aperture of multistage cleaning pump is maintained 10%, by leading shower pipe b (9) to liquefied ammonia heat exchange
Device 11 and spray distributor 1 note cleaning medicinal liquid；Flow through the circulating water flow of liquefied ammonia heat exchanger 11 in Central Control Room monitor closely simultaneously
The air temperature variations of change, the change of liquefied ammonia heat exchanger 11 leaving water temperature and air cooling tower 14 top exit；Treat liquid nitrogen heat exchanger
Circulating water flow reach 100m3/ h, the leaving water temperature of liquefied ammonia heat exchanger are 8.3 DEG C and 12 DEG C of air cooling tower outlet air temperature ＜
When stop cleaning；
3) system recovery
Closing is led shower pipe a (6) and is led shower pipe b (9), is then shut off cleaning multistage pump 8, removes multistage pump 8 and cleaning liquid storage
Case 15, recovers the normal operation in space division workshop.
Embodiment 2
A kind of medicinal liquid for space division workshop appliance on-line cleaning, is made up of the raw material of substance of following percentage by weight, lemon
Lemon acid 30%, oleoyl imidazoline 0.3%, tributyl phosphate 0.2%, jfc (fatty alcohol-polyoxyethylene ether) 0.25%, water
69.25%.
The supporting on-line cleaning device of the present embodiment and on-line cleaning method are all with embodiment 1.
Embodiment 3
A kind of medicinal liquid for space division workshop appliance on-line cleaning, is made up of the raw material of substance of following percentage by weight, hydroxyl
Guanidine-acetic acid 50%, lan-8260.4%, poly- (dimethyl siloxane -3- hydroxypropylmethyl siloxanes) polyoxyethylene ether 0.3%,
Fast t (amber acid ester sodium sulfonate) 0.25%, water 49.05%.
The supporting on-line cleaning device of the present embodiment and on-line cleaning method are all with embodiment 1.
Claims (1)
1. a kind of method that using on-line cleaning medicinal liquid, space division workshop appliance is carried out with on-line cleaning use is it is characterised in that include
The processing step of following order:
1.1) prepare the medicinal liquid for space division workshop appliance on-line cleaning, this cleaning medicinal liquid is former by the material of following weight percentage ratio
Material composition:
Described organic acid is formic acid or hydroxyacetic acid or citric acid or sulfamic acid, and described corrosion inhibiter is hexamethylenamine or oil
Acylimidazole quinoline or trihydroxy ethylamine oleate soap or lan-826, described penetrating agent is fatty alcohol-polyoxyethylene ether or amber acid ester
Sodium sulfonate, described defoamer is tributyl phosphate or silicone defoamer；
The preparation method of this on-line cleaning medicinal liquid is: puts into organic acid, corrosion inhibiter, infiltration in the reserving liquid tank fill clear water successively
Agent and defoamer, are obtained medicinal liquid finished product after stirring；
1.2) set up purging system
On liquid feeding pipeline between space division workshop fluid reservoir (3) and liquefied ammonia heat exchanger (11) one section in parallel by lead shower pipe a (6),
Cleaning reserving liquid tank (15), the cleaning multistage pump (8) with self-loopa valve (7) and to lead the cleaning medicinal liquid that shower pipe b (9) forms defeated
Send pipeline, the drain pipe of liquefied ammonia heat exchanger (11) is coupled with the input in space division workshop air cooling tower top spray distributor (1), such as
This sets up the medicinal liquid purging system between space division workshop fluid reservoir (3), liquefied ammonia heat exchanger (11) and air cooling tower (14)；
1.3) clean space division workshop appliance incrustation scale
Open and lead shower pipe a (6), fill the cleaning medicinal liquid of aforementioned component proportioning in cleaning reserving liquid tank (15), multistage pump (8) will be cleaned
Self-loopa valve (7) open, circulate 10 minutes, then slowly open and lead shower pipe b (9) with the speed of per minute 2 circles, make from following
Ring valve door (7) aperture maintains 10%, by leading shower pipe b (9) to liquefied ammonia heat exchanger (11) and spray distributor (1) note cleaning
Liquid；Flow through circulating water flow change, the going out of liquefied ammonia heat exchanger (11) of liquefied ammonia heat exchanger (11) in Central Control Room monitor closely simultaneously
Coolant-temperature gage change and the air temperature variations of air cooling tower (14) top exit；Treat that the circulating water flow of liquid nitrogen heat exchanger (11) reaches
To 100m3/ h, the leaving water temperature of liquefied ammonia heat exchanger (11) are to stop when 8.3 DEG C and air cooling tower (14) outlet air temperature ＜ 12 DEG C
Cleaning；
1.4) system recovery
Closing is led shower pipe a (6) and is led shower pipe b (9), is then shut off cleaning multistage pump (8), removes multistage pump (8) and cleaning liquid storage
The cleaning medicinal liquid transfer pipeline of case (15), recovers the normal operation of space division workshop appliance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510208748.5A CN104860403B (en) | 2015-04-28 | 2015-04-28 | Liquid medicine for online cleaning of air separation workshop appliances and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510208748.5A CN104860403B (en) | 2015-04-28 | 2015-04-28 | Liquid medicine for online cleaning of air separation workshop appliances and application method thereof |
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| CN104860403A CN104860403A (en) | 2015-08-26 |
| CN104860403B true CN104860403B (en) | 2017-02-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105695169A (en) * | 2016-01-19 | 2016-06-22 | 马鞍山纽泽科技服务有限公司 | Anti-scaling agent for water heater |
| CN108486579A (en) * | 2018-05-11 | 2018-09-04 | 山西阳煤丰喜泉稷能源有限公司 | A kind of cleansing composition and application method for the cleaning of surface cooler equipment on-line |
| CN112945006A (en) * | 2021-05-17 | 2021-06-11 | 成都飞机工业（集团）有限责任公司 | Anti-blocking method for autoclave cooling system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5788857A (en) * | 1996-10-23 | 1998-08-04 | Nalco Chemical Company | Hydroxyimino alkylene phosphonic acids for corrosion and scale inhibition in aqueous systems |
| CN1069704C (en) * | 1998-05-14 | 2001-08-15 | 抚顺大学 | Descaling agent for gas water heater |
| CN101440332A (en) * | 2008-12-30 | 2009-05-27 | 潘惠凯 | Environment protection efficient water-based circuit board cleaning agent and preparation thereof |
| CN101871745B (en) * | 2010-06-24 | 2012-03-28 | 瓮福（集团）有限责任公司 | Sulphuric acid plant liquid and liquid heat exchanger on-line cleaning method |
| CN103590055A (en) * | 2012-08-14 | 2014-02-19 | 苏州一方金属表面处理科技有限公司 | Environment-friendly cleaning agent for galvanized metal part |
| CN103642612B (en) * | 2013-12-09 | 2016-02-03 | 成都民航六维航化有限责任公司 | A kind of aircraft pipeline clean-out system and preparation method |
| CN104089523A (en) * | 2014-06-26 | 2014-10-08 | 安徽淮化股份有限公司 | Method for cleaning surface scale on heat exchanger tube bundles online |
| CN204100896U (en) * | 2014-09-12 | 2015-01-14 | 武汉中圣节能技术工程有限公司 | A kind of air cooler heat exchange pipe cleaning device for outer walls |
| CN104404547A (en) * | 2014-11-14 | 2015-03-11 | 无锡伊佩克科技有限公司 | Metal water-based cleaning agent and preparation method thereof |
| CN104532268B (en) * | 2014-11-28 | 2017-08-11 | 湖南金化科技集团有限公司 | A kind of novel steel tube rust remover and preparation method thereof |
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Address after: 710075 No. 11 Tangyan Road, Xi'an High-tech Zone, Shaanxi Province, 1904, Block C, Hesheng Jingguang Center Patentee after: Shaanxi Kaili Environmental Engineering Co., Ltd Address before: 710065 Shaanxi city of Xi'an province high tech Zone Tang Yan Road No. 11 i- Duhui 1 Building 1 unit 1620 Patentee before: SHAANXI KELLY CLEANING Co.,Ltd. |