CN104860403A - 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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- CN104860403A CN104860403A CN201510208748.5A CN201510208748A CN104860403A CN 104860403 A CN104860403 A CN 104860403A CN 201510208748 A CN201510208748 A CN 201510208748A CN 104860403 A CN104860403 A CN 104860403A
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- cleaning
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- cleaning liquid
- liquefied ammonia
- air separation
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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, relate to a kind of liquid and using method thereof of dividing workshop appliance on-line cleaning for sky.
Background technology
In empty point workshop appliance (liquefied ammonia interchanger, spray sparger, air cooling tower etc.) daily production, owing to constantly circulating in use with water and concentrating, the content of mineral substances in water constantly increases, thus causes equipment scaling.Liquefied ammonia interchanger, once fouling, will reduce the cooling effect of liquefied ammonia interchanger greatly, reduces the water at low temperature flow of liquefied ammonia interchanger; Spray sparger, once fouling, can cause the bias current spraying sparger, cause warm air and water at low temperature heat exchange efficiency to reduce; And air cooling tower is once occur the situation that outlet air temperature is too high, bring unnecessary trouble also can to subsequent production technique.What traditional method of dividing workshop appliance to clean to sky adopted in the past is the Technolgy of High Pressure Water jet Cleaning, after liquefied ammonia interchanger is removed, re-use high pressure water to clean, period is due to needs parking, huge loss can be caused to the production of Chemicals, simultaneously because spray sparger cannot be removed, the problem of its fouling bias current and too high also effectively not solved of air cooling tower outlet air temperature.Therefore, a kind of sky of the necessary exploitation in this area now divides liquid and the using method thereof of workshop appliance on-line cleaning.
Summary of the invention
The object of the invention is to overcome that the empty point workshop appliance cleaning and descaling of tradition must stop, cost is high, the deficiency of weak effect, the liquid dividing workshop appliance on-line cleaning for sky that a kind of stable chemical nature, had good sustained release effect, solubility for scale are strong is provided, also provide a kind of this on-line cleaning liquid that utilizes to divide workshop appliance to carry out the method for Hand scarf to sky simultaneously, adopt Hand scarf method of the present invention that workshop appliance can not be divided to produce corrosion harmfulness to the sky comprising air cooling tower and auxiliary facility thereof, empty point workshop, without the need to stopping, does not affect products production.
As described below for realizing the technical solution that above goal of the invention adopts.
Divide a liquid for workshop appliance on-line cleaning for sky, be made up of the raw material of substance of following weight per-cent:
Described organic acid is formic acid or oxyacetic acid or citric acid or thionamic acid; described inhibiter is Wu Luotuo or oleoyl tetrahydroglyoxaline or trihydroxy ethylamine oleate soap or Lan-826; described permeate agent is fatty alcohol-polyoxyethylene ether (JFC) or amber acid ester sodium sulfonate (fast T), and described defoamer is tributyl phosphate or silicone based defoamer.
The preparation method of this on-line cleaning liquid is: in the liquid-storing box filling clear water, drop into organic acid, inhibiter, permeate agent and defoamer successively, namely obtains liquid finished product after stirring.
Form in the material composition of above-mentioned liquid, organic acid effect is by itself and incrustation scale generation chemical reaction, insoluble incrustation scale is changed into the salt of solubility; The effect of inhibiter suppresses organic acid to sky point workshop pipeline, the corrosion of system; The effect of permeate agent is the contact promoting organic acid and incrustation scale; The effect of defoamer suppresses the foam that in cleaning process, carbonate deposit and organic acid reaction produce, and eliminates the difficulty that foam causes to follow-up air dry process.
One group of on-line cleaning liquid of the present invention more preferably weight percent raw material of substance formula be:
Another of on-line cleaning liquid of the present invention is organized more preferably weight percent raw material of substance formula and is:
First group of on-line cleaning liquid of the present invention more preferably weight percent raw material of substance formula be:
Above-mentioned divides in the liquid of workshop appliance on-line cleaning for sky, and described silicone based defoamer is poly-(dimethyl siloxane-3-hydroxypropylmethyl siloxanes) Soxylat A 25-7, and its molecular structural formula is
Above-mentioned on-line cleaning liquid is adopted the method that sky divides workshop appliance to carry out on-line cleaning use to be comprised to the processing step of following order:
1) cleaning system is set up
On the liquid feeding pipeline of sky point between workshop container for storing liquid and liquefied ammonia interchanger in parallel one section by lead shower pipe A, cleaning liquid-storing box, with self-circulation valve cleaning stage pump and lead the cleaning liquid transfer line that shower pipe B forms, the drain pipe of liquefied ammonia interchanger connects with the input terminus of empty point workshop air cooling tower top spray sparger, so namely sets up sky point workshop container for storing liquid, liquid cleaning system between liquefied ammonia interchanger and air cooling tower;
2) the empty point workshop appliance incrustation scale of cleaning
Open and lead shower pipe A, the cleaning liquid of aforementioned component proportioning is filled at cleaning liquid-storing box, by the self-circulation valve open of cleaning stage pump, circulate 10 minutes, the speed of then enclosing with per minute two is slowly opened and is led shower pipe B, self-circulation valve opening is made to maintain 10%, by leading shower pipe B to liquefied ammonia interchanger and spray sparger note scavenging solution; Flow through the air temperature variations of the circulating water flow change of liquefied ammonia interchanger, the leaving water temperature(LWT) change of liquefied ammonia interchanger and air cooling tower top exit at Central Control Room monitor closely simultaneously; Treat that the circulating water flow of liquid nitrogen interchanger reaches 100m
3the leaving water temperature(LWT) of/h, liquefied ammonia interchanger be 8.3 DEG C and air cooling tower outlet air temperature < 12 DEG C time stop cleaning;
3) system recovery
Closedown is led shower pipe A and is led shower pipe B, then closes cleaning stage pump, removes the cleaning liquid transfer line of stage pump and cleaning liquid-storing box, recovers the normal operation of empty point workshop appliance.
Compared with prior art, the advantage that the present invention has is:
One, the solubility for scale of on-line cleaning liquid of the present invention is strong, and cleaning process non-foam produces, and to equipment corrosion < 1g/ ㎡ * h, can not produce corrosion harmfulness to air cooling tower and auxiliary facility thereof;
Two, on-line cleaning liquid safety and environmental protection of the present invention, to human non-toxic, scavenging solution, without the need to discharge, directly can import the recycle system, highly effective and safe;
Three, the present invention is compared with conventional high-tension cleaning by high pressure water jet technology, and cleaning is comparatively thorough, not only liquefied ammonia interchanger can be cleaned up, and also spray sparger can be cleaned up, and the Technolgy of High Pressure Water jet Cleaning cannot be cleaned spray sparger simultaneously;
Four, liquid of the present invention is suitable for steel and comprises common soft steel, steel alloy, drum steel as 20A, 20G, SA299, BHW35, BHW38 etc., does not produce Hydrogen Brittleness Phenomena;
Five, the present invention supporting provide to sky divide the operation of workshop appliance on-line cleaning method control simple and convenient, cost is low, without the need to removing liquefied ammonia interchanger and spray sparger in cleaning process, also dividing workshop to stop without the need to sky, can not cause damage to the production of Chemicals.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation being the supporting special sky of the present invention and dividing workshop appliance on-line cleaning system.
In figure, the title of number designation respectively: 1-sprays sparger, 2-pump A, 3-container for storing liquid, 4-recirculated water water main pipe, 5-pump B, 6-leads shower pipe A, 7-(multistage scavenging pump) self-circulation valve, the multistage scavenging pump of 8-, 9-leads shower pipe B, 10-liquefied ammonia recuperator bypass valve, 11-liquefied ammonia interchanger, 12-warm air, 13-removes circulation jellyfish pipe, 14-freezing air, 15-cleans liquid-storing box.
Embodiment
Content of the present invention to be described further with the cleaning example that one group, sky point workshop equipment is a cleaning unit below in conjunction with accompanying drawing.
Embodiment 1
Divide a liquid for workshop appliance on-line cleaning for sky, be made up of the raw material of substance of following weight percent, thionamic acid 10%, urotropine 0.5%, JFC (fatty alcohol-polyoxyethylene ether) 0.3%, tributyl phosphate 0.5%, water 88.7%.Its preparation method drops into thionamic acid, urotropine, JFC and tributyl phosphate successively in the cleaning liquid-storing box 15 filling clear water, namely obtains liquid finished product after stirring.
The supporting sky of the present embodiment divide workshop appliance on-line cleaning device by be connected in series successively by pipeline lead shower pipe A (6), cleaning liquid-storing box 15, with self-circulation valve 7 cleaning stage pump 8 and lead shower pipe B (9) and form, this device is connected in parallel on sky point workshop 40000m
3on liquid feeding pipeline between container for storing liquid 3 and liquefied ammonia interchanger 11.Cleaning liquid-storing box 15 and air cooling tower 14 connect into the water charging system of cleaning liquid-storing box 15 by pipeline, and cleaning liquid-storing box 15, cleaning stage pump 8 and liquefied ammonia interchanger 11 connect into the feed liquor system of cleaning liquid by pipeline.Cleaning stage pump 8 flow used in the present embodiment is 20m
3/ h, lift 160m; Cleaning liquid-storing box 15 used is stainless steel vessel, and its volume is 4m
3, upper vessel portion is provided with dosing mouth.
The on-line cleaning method of the present embodiment comprises the processing step of following order:
1) cleaning system is set up
Connect successively and lead shower pipe A (6), cleaning liquid-storing box 15, cleaning stage pump (8) and lead shower pipe B (9), the liquid feeding end of leading shower pipe A (6) and the outlet end of leading shower pipe B (9) are connected with the liquid outlet of container for storing liquid 3 and the fluid inlet of liquefied ammonia interchanger 11 respectively, set up empty point workshop container for storing liquid, liquid cleaning system between liquefied ammonia interchanger and air cooling tower;
2) incrustation scale is cleaned
Cleaning liquid is injected in cleaning liquid-storing box 15, or first inject recirculated water to cleaning liquid-storing box 15 by leading shower pipe A (6), then clean liquid at the dispensing mouth of cleaning liquid-storing box 15 by the component preparation in described cleaning liquid component proportion, the order that each component adds cleaning liquid-storing box 15 is organic acid → inhibiter → permeate agent → defoamer; The self-circulation valve 7 that cleaning stage pump 8 exports is opened, open cleaning stage pump 8 self-circulation 10 minutes, the speed of then enclosing with per minute two is slowly opened and is led shower pipe B (9), and self-circulation valve 7 aperture of multistage scavenging pump is maintained 10%, by leading shower pipe B (9) to liquefied ammonia interchanger 11 and spray sparger 1 note cleaning liquid; Flow through the air temperature variations of the circulating water flow change of liquefied ammonia interchanger 11, the change of liquefied ammonia interchanger 11 leaving water temperature(LWT) and air cooling tower 14 top exit at Central Control Room monitor closely simultaneously; Treat that the circulating water flow of liquid nitrogen interchanger reaches 100m
3the leaving water temperature(LWT) of/h, liquefied ammonia interchanger be 8.3 DEG C and air cooling tower outlet air temperature < 12 DEG C time stop cleaning;
3) system recovery
Closedown is led shower pipe A (6) and is led shower pipe B (9), then closes cleaning stage pump 8, removes stage pump 8 and cleaning liquid-storing box 15, recovers the normal operation in empty point workshop.
Embodiment 2
Divide a liquid for workshop appliance on-line cleaning for sky, be made up of the raw material of substance of following weight percent, citric acid 30%, oleoyl tetrahydroglyoxaline 0.3%, tributyl phosphate 0.2%, JFC (fatty alcohol-polyoxyethylene ether) 0.25%, water 69.25%.
The on-line cleaning device that the present embodiment is supporting and on-line cleaning method are all with embodiment 1.
Embodiment 3
A kind of liquid dividing workshop appliance on-line cleaning for sky, be made up of the raw material of substance of following weight percent, oxyacetic acid 50%, LAN-8260.4%, poly-(dimethyl siloxane-3-hydroxypropylmethyl siloxanes) Soxylat A 25-7 0.3%, fast T (amber acid ester sodium sulfonate) 0.25%, water 49.05%.
The on-line cleaning device that the present embodiment is supporting and on-line cleaning method are all with embodiment 1.
Claims (6)
1. divide a liquid for workshop appliance on-line cleaning for sky, it is characterized in that: this on-line cleaning liquid is made up of the raw material of substance of following weight per-cent:
Described organic acid is formic acid or oxyacetic acid or citric acid or thionamic acid, described inhibiter is urotropine or oleoyl tetrahydroglyoxaline or trihydroxy ethylamine oleate soap or Lan-826, described permeate agent is fatty alcohol-polyoxyethylene ether or amber acid ester sodium sulfonate, and described defoamer is tributyl phosphate or silicone based defoamer;
The preparation method of this on-line cleaning liquid is: in the liquid-storing box filling clear water, drop into organic acid, inhibiter, permeate agent and defoamer successively, namely obtains liquid finished product after stirring.
2. the liquid dividing workshop appliance on-line cleaning for sky according to claim 1, is characterized in that: this on-line cleaning liquid is made up of the raw material of substance of following weight per-cent:
3. the liquid dividing workshop appliance on-line cleaning for sky according to claim 1, is characterized in that: this on-line cleaning liquid is made up of the raw material of substance of following weight per-cent:
4. the liquid dividing workshop appliance on-line cleaning for sky according to claim 1, is characterized in that: this on-line cleaning liquid is made up of the raw material of substance of following weight per-cent:
5. the liquid dividing workshop appliance on-line cleaning for sky according to claim 1 or 4, it is characterized in that: described silicone based defoamer is poly-(dimethyl siloxane-3-hydroxypropylmethyl siloxanes) Soxylat A 25-7, and its molecular structural formula is
6. adopt on-line cleaning liquid described in claim 1 to divide workshop appliance to carry out a method for on-line cleaning use to sky, it is characterized in that the processing step comprising following order:
6.1) cleaning system is set up
On the liquid feeding pipeline of sky point between workshop container for storing liquid (3) and liquefied ammonia interchanger (11) in parallel one section by leading shower pipe A (6), cleaning liquid-storing box (15), with self-circulation valve (7) cleaning stage pump (8) and lead the cleaning liquid transfer line that shower pipe B (9) forms, the drain pipe of liquefied ammonia interchanger (11) connects with the input terminus in empty point workshop air cooling tower top spray sparger (1), so namely set up empty point workshop container for storing liquid (3), liquid cleaning system between liquefied ammonia interchanger (11) and air cooling tower (14),
6.2) the empty point workshop appliance incrustation scale of cleaning
Open and lead shower pipe A (6), the cleaning liquid of aforementioned component proportioning is filled in cleaning liquid-storing box (15), the self-circulation valve (7) cleaning stage pump (8) is opened, circulate 10 minutes, the speed of then enclosing with per minute 2 is slowly opened and is led shower pipe B (9), self-circulation valve (7) aperture is made to maintain 10%, by leading shower pipe B (9) to liquefied ammonia interchanger (11) and spray sparger (1) note scavenging solution; Flow through the air temperature variations of the circulating water flow change of liquefied ammonia interchanger (11), the leaving water temperature(LWT) change of liquefied ammonia interchanger (11) and air cooling tower (14) top exit at Central Control Room monitor closely simultaneously; Treat that the circulating water flow of liquid nitrogen interchanger (11) reaches 100m
3the leaving water temperature(LWT) of/h, liquefied ammonia interchanger (11) is 8.3 DEG C and stops cleaning with during air cooling tower (14) outlet air temperature < 12 DEG C;
6.3) system recovery
Closedown is led shower pipe A (6) and is led shower pipe B (9), then cleaning stage pump (8) is closed, remove the cleaning liquid transfer line of stage pump (8) and cleaning liquid-storing box (15), recover the normal operation of empty point 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 |
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| 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 true CN104860403A (en) | 2015-08-26 |
| CN104860403B CN104860403B (en) | 2017-02-01 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| 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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|---|---|
| CN104860403B (en) | 2017-02-01 |
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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. |