CN108486579A - A kind of cleansing composition and application method for the cleaning of surface cooler equipment on-line - Google Patents
A kind of cleansing composition and application method for the cleaning of surface cooler equipment on-line Download PDFInfo
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- CN108486579A CN108486579A CN201810446449.9A CN201810446449A CN108486579A CN 108486579 A CN108486579 A CN 108486579A CN 201810446449 A CN201810446449 A CN 201810446449A CN 108486579 A CN108486579 A CN 108486579A
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- Prior art keywords
- cleaning
- surface cooler
- cleansing composition
- equipment
- line
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
- C23G1/06—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
- C23G1/061—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors nitrogen-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
- C23G1/06—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
- C23G1/063—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors heterocyclic compounds
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
- C23G1/088—Iron or steel solutions containing organic acids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Cleaning In General (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The present invention relates to a kind of cleansing compositions and application method for the cleaning of surface cooler equipment on-line, cleansing composition is made of organic acid, corrosion inhibiter and solid defoaming agent, the on-line cleaning method to surface cooler equipment include establish cleaning system, prepare cleaning solution, by lead shower pipe to inside surface cooler equipment tubular heat exchanger inject cleaning solution so that the incrustation scale in surface air cooler heat exchanger tubulation is cleaned, system recovery etc. processing steps.The chemical property stabilization of cleansing composition of the present invention, had good sustained release effect, solubility for scale are strong；The method and process for carrying out Hand scarf to surface cooler equipment using the cleansing composition is simple, at low cost, and corrosion harmfulness will not be generated to surface cooler equipment, is not necessarily to remove surface cooler end cap in cleaning process, without parking, does not influence production.
Description
Technical field
The invention belongs to chemical cleaning technique fields, are related to a kind of cleaning agent combination for the cleaning of surface cooler equipment on-line
Object and application method.
Background technology
Surface cooler is a huge heat transmission equipment, and the steam of high temperature flows through surface cooler shell side, and cooling water flows through surface cooler
Internal tubulation tube bank.It is a tubular heat exchanger, pressure 9.02Mpa, the middle pressure that temperature is 519.25 DEG C inside surface cooler
For steam after steam turbine does work, pressure is reduced to 0.026MPa, and temperature is down to 100 DEG C of low-pressure steam, and low-pressure steam enters table
Cooler, then the tubular heat exchanger inside surface cooler is flowed through to low-pressure steam cooling by the cooling water of 2000m3/h, low pressure is steamed
Vapour drops to 18Kpa, low-pressure steam is made to be condensed into water, coagulate by back pressure type vacuum pump set (referred to as taking out back of the body machine) pumping, pressure at expulsion
It bears water and enters boiler use by water pump, have the function that condensed water in recovered steam, reach energy-efficient purpose.
Since current surface cooler equipment application field is used to flow through shell and tube inside surface cooler to surface cooler steam cooling
The cooling water of heat exchanger is mostly surface water, and calcium ions and magnesium ions concentration is higher in water, when in use constantly cycle and concentration, the mine in water
Content of material is continuously increased, so as to cause tubular heat exchanger fouling.Tubular heat exchanger fouling can substantially reduce shell and tube and change
The heat transfer effect of hot device causes the pressure at expulsion of back pressure type vacuum pump set to increase.Again due to tubular heat exchanger inside surface cooler
The pressure at expulsion of fouling, back pressure type vacuum pump set is increased to 55KPa or more, and pressure at expulsion is higher, a large amount of non-condensing condensations
Water is directly discharged in air, causes the waste of a large amount of pure water resources.
Previous traditional method that surface cooler equipment scaling is cleaned using parking Cleaning by High Pressure Water Jet or
Person's parking chemical cleaning, dismounting, the installation of surface cooler are time-consuming and laborious.Meanwhile parking is for manufacturing enterprise's (such as urea plant)
Influence of production is huge, primary parking, startup procedure, economic loss will more than 600 ten thousand, and the problem of surface cooler equipment scaling
Do not efficiently solved.Therefore, a kind of liquid of the surface cooler equipment on-line cleaning of the necessary exploitation in this field now and
Its application method not only enables steam condensate effective recycling to reach, but also manufacturing enterprise is made to produce not parking purpose.
Invention content
It is an object of the invention to overcome the shortcomings of the prior art, provide that a kind of chemical property is stable, slow release effect
Cleansing composition for the cleaning of surface cooler equipment on-line good, solubility for scale is strong, while also providing and a kind of utilizing the cleaning
The method that agent composition carries out Hand scarf to surface cooler equipment, will not be cold to table using Hand scarf method of the present invention
Device equipment generates corrosion harmfulness, and surface cooler does not influence production without dismounting in cleaning process.
To realize that the technical solution that the above goal of the invention uses is as described below.
A kind of cleansing composition for the cleaning of surface cooler equipment on-line, it is characterised in that：The cleansing composition by
Following weight than raw material of substance composition：
Organic acid 80~85,
Corrosion inhibiter 5~10,
Solid defoaming agent 5~15；
The organic acid be aminotriacetic acid and/or diethylamine tetraacethyl and/or citric acid and/or) sulfamic acid and/
Or oxalic acid mixture, the corrosion inhibiter be methenamine and/or oleoyl imidazoline and/or trihydroxy ethylamine oleate soap and/or
Benzotriazole and/or Lan-826, the solid defoaming agent are poly- (dimethyl siloxane -3- hydroxypropylmethyl silica
Alkane) polyoxyethylene ether, molecular structural formula is
The preparation method of cleansing composition for the cleaning of surface cooler equipment on-line is：By organic acid, corrosion inhibiter and
Solid defoaming agent after mixing, bag distribution packaging.
In the material composition for constituting above-mentioned cleansing composition, the effect of organic acid is that chemistry occurs instead by itself and incrustation scale
It answers, insoluble incrustation scale is changed into soluble salt；The effect of corrosion inhibiter is the corruption for inhibiting organic acid to surface cooler pipeline system
Erosion；The effect of solid defoaming agent is to inhibit the foam that carbonate deposit is generated with organic acid reaction in cleaning process, eliminates foam
To difficult caused by subsequent air dry process.
Include the processing step of following sequence using the method that the cleansing composition surface cooler equipment carries out on-line cleaning：
1) cleaning system is established
Cleaning water tank is connected to the suction inlet of cleaning multistage pump, the water outlet for cleaning multistage pump is connected to control
The surface cooler of valve leads leaching mouth, constitutes surface cooler on-line cleaning medicine system；
2) cleaning solution is prepared：
Cleansing composition and water are pressed 1:10~20 weight ratio dissolve into cleaned for surface cooler equipment on-line it is clear
Washing lotion；
3) surface cooler equipment scale is cleaned
The cleaning liquid that aforementioned component proportioning is filled in cleaning water tank, constitutes liquid reserve tank, cleaning multistage pump is opened, so
Surface cooler is opened afterwards and leads leaching mouth valve, injects cleaning solution to the tubular heat exchanger inside surface cooler equipment by leading shower pipe, it is right
Incrustation scale in surface cooler equipment heat exchanging pipe is cleaned；Simultaneously in Central Control Room monitor closely, following for tubular heat exchanger is controlled
Ring water flow change between 10000t/h~20000t/h, tubular heat exchanger import, exit water temperature degree variation 25 DEG C~
Between 30 DEG C, and the pressure at expulsion variation of monitor closely back pressure type vacuum pump set, wait for the pressure at expulsion ＜ of back pressure type vacuum pump set
Stop cleaning when 18KPa；
4) system is restored
Shower pipe valve is led in closing, is then shut off cleaning multistage pump, and the cleaning liquid for removing multistage pump and cleaning liquid reserve tank is defeated
Pipeline is sent, the normal operation of surface cooler equipment is restored.
Compared with prior art, present invention has the advantage that：
One, the solubility for scale of the cleansing composition of the present invention for the cleaning of surface cooler equipment on-line is strong, cleans
Journey non-foam generates, and corrodes ＜ 1g/ ㎡ * h to equipment, will not generate corrosion harmfulness to surface cooler equipment；
Two, the cleansing composition safety and environmental protection of the present invention for the cleaning of surface cooler equipment on-line, it is nontoxic to human body,
Cleaning solution can directly import the circulatory system, highly effective and safe without discharge；
Three, for the present invention compared with conventional high-tension cleaning by high pressure water jet technology, cleaning more thoroughly, can be by the tubulation inside surface cooler
Formula heat exchanger cleans up；
Four, cleansing composition of the present invention is applicable in mild steel, steel alloy, drum steel that steel include common such as
20A, 20G, SA299, BHW35, BHW38 etc., do not generate Hydrogen Brittleness Phenomena；
Five, the operation and control to surface cooler equipment on-line cleaning method of the mating offer of the present invention is simple and convenient, at low cost,
Without removing surface cooler end cap in cleaning process, without parking, will not cause damages to the production of product.
Description of the drawings
The structural schematic diagram of the mating dedicated surface cooler on-line cleaning system of Fig. 1 present invention.
The title of number designation is respectively in figure：1- first leads shower pipe, and 2- cleans liquid reserve tank, and 3- cleans multistage pump,
4- second leads shower pipe, 5- surface coolers, 6- turbines, 7- pumping back of the body machines.
Specific implementation mode
Embodiment 1
A kind of cleansing composition for the cleaning of surface cooler equipment on-line is made of, ammonia the raw material of substance of following weight
Base triacetic acid 82kg, methenamine 5kg, solid defoaming agent 13kg, preparation method is by sulfamic acid, methenamine, solid
Antifoaming agent is distributed into 25kg/ bags after mixing.In use, the cleansing composition and water are pressed 1:15 weight ratio dissolves,
The cleaning solution cleaned for surface cooler equipment on-line is made.
The surface cooler equipment on-line cleaning device mating with the present embodiment as shown in Figure 1, it by being sequentially connected in series by pipeline
Surface cooler first lead shower pipe 1, cleaning liquid reserve tank 2, the cleaning multistage pump 3 with self-loopa valve, surface cooler second lead shower pipe 4
Constitute cycle.Cleaning liquid reserve tank and surface cooler second lead the water charging system that shower pipe 4 connects into cleaning liquid reserve tank by pipeline, cleaning
Liquid reserve tank, cleaning multistage pump lead the feed liquor system that shower pipe 1 connects into cleaning liquid by first.It is cleaned used in the present embodiment
Multistage pump discharge is 20m3/ h, lift 160m；Cleaning liquid reserve tank used is rustless steel container, volume 4m3, upper vessel portion
Equipped with dosing mouth.
The on-line cleaning method of the present embodiment includes the processing step of following sequence：
1) cleaning system is established
Cleaning water tank is connected to the suction inlet of cleaning multistage pump, the water outlet for cleaning multistage pump is connected to control
The surface cooler of valve leads leaching mouth, constitutes surface cooler on-line cleaning medicine system；
2) incrustation scale is cleaned
It is filled in cleaning liquid reserve tank by the cleaning solution of aforementioned cleansing composition and water proportioning, cleaning multistage pump is beaten
It opens, then opens surface cooler and lead leaching mouth valve, inject cleaning to the tubular heat exchanger inside surface cooler equipment by leading shower pipe
Liquid cleans the incrustation scale in surface air cooler heat exchanger tubulation；Simultaneously in Central Control Room monitor closely, tubular heat exchanger is controlled
Circulating water flow change between 15000t/h~20000t/h, tubular heat exchanger import, exit water temperature degree variation at 25 DEG C
Between~30 DEG C, and the pressure at expulsion variation of monitor closely back pressure type vacuum pump set, wait for the pressure at expulsion of back pressure type vacuum pump set
Stop cleaning when ＜ 18KPa；
3) system is restored
Shower pipe valve is led in closing, is then shut off cleaning multistage pump, and the cleaning liquid for removing multistage pump and cleaning liquid reserve tank is defeated
Pipeline is sent, the normal operation of surface cooler equipment is restored.
Embodiment 2
A kind of cleansing composition for the cleaning of surface cooler equipment on-line is made of, two the raw material of substance of following weight
Ethamine tetraacethyl 85kg, oleoyl imidazoline 5kg, solid defoaming agent 13kg, preparation method are by diethylamine tetraacethyl, oleoyl
Base imidazoline, solid defoaming agent are distributed into 25kg/ bags after mixing.In use, the cleansing composition and water are pressed 1:10
Weight ratio dissolve, the cleaning solution cleaned for surface cooler equipment on-line is made.
The mating on-line cleaning device of the present embodiment and the use cleansing composition carry out surface cooler equipment online
The method of cleaning is the same as embodiment 1.
Embodiment 3
For the cleansing composition of surface cooler equipment on-line cleaning, it is made of the raw material of substance of following proportioning, amino sulphur
Sour 82 unit of weights, 5 unit of weights of oleoyl imidazoline, 10 unit of weight of solid defoaming agent are distributed into 25kg/ after mixing
Bag.In use, the cleansing composition and water are pressed 1:15 weight ratio dissolves, and is made and cleans for surface cooler equipment on-line
Cleaning solution.
The mating on-line cleaning device of the present embodiment and the use cleansing composition carry out surface cooler equipment online
The method of cleaning is the same as embodiment 1.
Claims (2)
1. a kind of cleansing composition for the cleaning of surface cooler equipment on-line, it is characterised in that：The cleansing composition is under
State the raw material of substance composition of weight ratio：
Organic acid 80~85,
Corrosion inhibiter 5~10,
Solid defoaming agent 5~15；
The organic acid be aminotriacetic acid and/or diethylamine tetraacethyl and/or citric acid and/or) sulfamic acid and/or grass
Acid blend, the corrosion inhibiter are methenamine and/or oleoyl imidazoline and/or trihydroxy ethylamine oleate soap and/or benzo
Triazole and/or Lan-826, the solid defoaming agent are poly- for poly- (dimethyl siloxane -3- hydroxypropylmethyls siloxanes)
Ethylene oxide ether, molecular structural formula are
The preparation method of cleansing composition for the cleaning of surface cooler equipment on-line is：By organic acid, corrosion inhibiter and solid
Antifoaming agent after mixing, bag distribution packaging.
2. a kind of method carrying out on-line cleaning to surface cooler equipment using cleansing composition described in claim 1, feature
Be include following sequence processing step：
2.1) cleaning system is established
Cleaning water tank is connected to the suction inlet of cleaning multistage pump, the water outlet for cleaning multistage pump is connected to control valve
Surface cooler lead leaching mouth, constitute surface cooler on-line cleaning medicine system；
2.2) cleaning solution is prepared：
Cleansing composition and water are pressed 1:10~20 weight ratio dissolves into the cleaning solution cleaned for surface cooler equipment on-line；
2.3) surface cooler equipment scale is cleaned
The cleaning liquid that aforementioned component proportioning is filled in cleaning water tank, constitutes liquid reserve tank, and cleaning multistage pump is opened, is then beaten
Game clock cooler leads leaching mouth valve, injects cleaning solution to the tubular heat exchanger inside surface cooler equipment by leading shower pipe, cold to table
Incrustation scale in device equipment heat exchanging pipe is cleaned；Simultaneously in Central Control Room monitor closely, the recirculated water of tubular heat exchanger is controlled
Changes in flow rate between 10000t/h~20000t/h, tubular heat exchanger import, exit water temperature degree variation at 25 DEG C~30 DEG C
Between, and the pressure at expulsion variation of monitor closely back pressure type vacuum pump set, wait for the pressure at expulsion ＜ 18KPa of back pressure type vacuum pump set
When stop cleaning；
2.4) system is restored
Shower pipe valve is led in closing, is then shut off cleaning multistage pump, is removed multistage pump and is cleaned the cleaning liquid delivery pipe of liquid reserve tank
The normal operation of surface cooler equipment is restored on road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810446449.9A CN108486579A (en) | 2018-05-11 | 2018-05-11 | A kind of cleansing composition and application method for the cleaning of surface cooler equipment on-line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810446449.9A CN108486579A (en) | 2018-05-11 | 2018-05-11 | A kind of cleansing composition and application method for the cleaning of surface cooler equipment on-line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108486579A true CN108486579A (en) | 2018-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810446449.9A Pending CN108486579A (en) | 2018-05-11 | 2018-05-11 | A kind of cleansing composition and application method for the cleaning of surface cooler equipment on-line |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114540822A (en) * | 2022-02-24 | 2022-05-27 | 上海康跃化工科技有限公司 | Descaling composition and application thereof |
| RU2797286C1 (en) * | 2022-09-22 | 2023-06-01 | Лаврик Елена Валерьевна | Foam cleaner for removing contaminants from the inner surfaces of honeycombs of car radiator core |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104860403A (en) * | 2015-04-28 | 2015-08-26 | 陕西凯利清洗有限公司 | Liquid medicine for online cleaning of air separation workshop appliances and application method thereof |
| CN107034038A (en) * | 2017-04-28 | 2017-08-11 | 中昊(大连)化工研究设计院有限公司 | A kind of cleaning agent for being used to clean quartz ore |
-
2018
- 2018-05-11 CN CN201810446449.9A patent/CN108486579A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104860403A (en) * | 2015-04-28 | 2015-08-26 | 陕西凯利清洗有限公司 | Liquid medicine for online cleaning of air separation workshop appliances and application method thereof |
| CN107034038A (en) * | 2017-04-28 | 2017-08-11 | 中昊(大连)化工研究设计院有限公司 | A kind of cleaning agent for being used to clean quartz ore |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114540822A (en) * | 2022-02-24 | 2022-05-27 | 上海康跃化工科技有限公司 | Descaling composition and application thereof |
| RU2797286C1 (en) * | 2022-09-22 | 2023-06-01 | Лаврик Елена Валерьевна | Foam cleaner for removing contaminants from the inner surfaces of honeycombs of car radiator core |
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Application publication date: 20180904 |
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