CN105806148A - Cleaning method for refrigerating unit - Google Patents
Cleaning method for refrigerating unit Download PDFInfo
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- CN105806148A CN105806148A CN201410843057.8A CN201410843057A CN105806148A CN 105806148 A CN105806148 A CN 105806148A CN 201410843057 A CN201410843057 A CN 201410843057A CN 105806148 A CN105806148 A CN 105806148A
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- cleaning
- cleaning method
- hydrochloric acid
- freezing unit
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Abstract
The invention discloses a cleaning method for a refrigerating unit. The cleaning method comprises the following steps that acid cleaning is conducted with an acid mixture, and passivating treatment is conducted. The acid mixture comprises water, hydrochloric acid, a pickling corrosion inhibitor, a chloridion corrosion inhibitor, a surfactant, an antifoaming agent and a viscosity remover. The cleaning method is efficient, safe, low in cost, easy to control and capable of relieving the labor intensity, and thus the requirement of industrial production is met.
Description
Technical field
The present invention relates to freezing unit field, particularly relate to the cleaning method of a kind of freezing unit.
Background technology
Traditionally, freezing unit is generally by compositions such as vaporizer, absorber, cooler, low-temperature regenerator, high-temp regenerator, heat exchanger, heat regenerator, solution pump, cooling pumps.Its operation principle is that cold water is organized the cryogenic coolant water-cooled after cooler decompression throttles but in vaporizer, evaporate after water as refrigerant own absorption cold water heat, become refrigerant vapour, enter in absorber and absorbed by concentrated solution, then concentrated solution becomes weak solution, reaches to produce the purpose of cold water then through physical processes such as a series of heat exchange conduction.
Wherein, cooler is mainly made up of heat exchanging pipe, and this tubulation material is copper, along with long use, tubulation necessarily adheres to dirt thus blocking tubulation, it is difficult to ensure good refrigeration, increases energy consumption and has a strong impact on the operation of system.Therefore, each tubulation of cooler must regularly be carried out ensureing the normal performance of equipment.Traditional physical cleaning (machinery dredging) adopts high-pressure wash, and the operating pressure of cleaning machine is up to 60MPa.Namely existing be that method for cleaning not only time-consuming bothersome efficiency is low, and after cleaning a period of time, oxidation and rusting occurs again tubulation, and labor intensity is big, wayward, is easily generated potential safety hazard in cleaning operation.
It would therefore be highly desirable to the chemical cleaning method of a kind of improvement is to overcome above-mentioned defect.
Summary of the invention
It is an object of the invention to provide the cleaning method of a kind of freezing unit, its highly effective and safe, cost is low, easily controllable, and reduces labor intensity, thus meeting the needs of production.
For achieving the above object, the cleaning method of the freezing unit of the present invention, comprise the following steps:
Carrying out acid cleaning with acidic mixture, described acidic mixture includes following components: water, hydrochloric acid, pickling slow releasing agent, chloride ion slow releasing agent, surfactant, defoamer, viscosity remover；And
Passivation Treatment.
Compared with prior art, the employing acidic mixture of the present invention carries out acid cleaning, and carry out Passivation Treatment, cleaning method is simple, easy to operate, and cost is low and labor intensity reduces, after cleaning, fridge tubulation is corrosion-free, guarantee equipment properly functioning, thus meeting production requirement, has good application value.
It is preferred that each component of described acidic mixture carries out proportioning according to following percentage by weight:: water 60%～75%, hydrochloric acid 0.8%～1%, pickling slow releasing agent 0.5%～1%, chloride ion slow releasing agent 0.5%～1%, surfactant 20%～35%, defoamer 0.5%～1%, viscosity remover 0.5%～1%.
It is preferred that acidic cleaning step also includes: wash cycles；Timing detection hydrochloric acid mass fraction.
It is preferred that acidic cleaning step also includes: supplement hydrochloric acid when hydrochloric acid mass fraction is less than predetermined value, until terminating acid cleaning when hydrochloric acid mass fraction difference value is less than 1.5%.
It is preferred that after acidic cleaning step, also include before Passivation Treatment: clear water wash cycles.
It is preferred that described Passivation Treatment includes: add ionic membrane flake caustic and tertiary sodium phosphate.
It is preferred that also include before acidic cleaning step: each tubulation of the freezing unit of machinery dredging.
Accompanying drawing explanation
Fig. 1 is the flow chart of an embodiment of the cleaning method of the freezing unit of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the cleaning method of the freezing unit of the present invention is described further, but is not so limited the present invention.
The cleaning method of the freezing unit of the present invention belongs to chemical cleaning method, the tubulation of cooling system in its energy high-efficiency washing freezing unit, or other pipelines, is not herein limited by restriction.As it is shown in figure 1, the flow chart of an embodiment of the cleaning method of the freezing unit of the present invention comprises the following steps:
Step 101, carries out acid cleaning with acidic mixture；
Step 102, clear water wash cycles；
Step 103, Passivation Treatment.
Specifically, this acidic mixture includes following components: water, hydrochloric acid, pickling slow releasing agent, chloride ion slow releasing agent, surfactant, defoamer, viscosity remover.It is preferred that the percentage by weight of above-mentioned each component is: water 60%～75%, hydrochloric acid 0.8%～1%, pickling slow releasing agent 0.5%～1%, chloride ion slow releasing agent 0.5%～1%, surfactant 20%～35%, defoamer 0.5%～1%, viscosity remover 0.5%～1%.Specifically, concentration of hydrochloric acid in the present embodiment ranges for 15%～20%, it is advantageous to be 18%, and pickling slow releasing agent is Lan-826 pickling slow releasing agent, chloride ion slow releasing agent is HNQC-HS300 chloride ion slow releasing agent, and this surfactant is detergent alkylate sulfur natrium surfactant.The acidic mixture of this recipe ingredient composition is obvious to the dirt dirty cleaning performance of metallic conduit, and cost is low.
Specifically, as an embodiment, the present invention utilizes rinse bath wash cycles timing detection hydrochloric acid mass fraction, supplements hydrochloric acid when hydrochloric acid mass fraction is less than predetermined value, until terminating acid cleaning when hydrochloric acid mass fraction difference value is less than 1.5%.As an example, clean cycle groove adds the tap water of 0.9 cubic metre, and successively add the efficient pickling slow releasing agent of 2kgLan-826,2kgHNQC-HS300 chloride ion slow releasing agent, 5kg detergent alkylate sulfur natrium surfactant, 0.5kg defoamer, 0.5kg viscosity remover, 50kg concentrated hydrochloric acid, supplements constant volume at 1 cubic metre with tap water by liquor capacity in circulating slot after being sufficiently mixed, and the hydrochloric acid mass fraction in mixed liquor is about 2%.Now, open pump and be circulated cleaning, every 10 minutes detection hydrochloric acid mass fractions, it should be noted that, this assay intervals is unrestricted, it is preferred that can timing detection in 10 minutes～30 minutes.Supplement predetermined salt acid number when the hydrochloric acid mass fraction detected is less than 0.8%, for instance add 25kg hydrochloric acid in the present embodiment, proceed wash cycles timing detection.When the hydrochloric acid mass fraction difference value detected is less than 1.5%, terminates acidity and clean, and cleanout fluid of draining.
It is noted that in above-mentioned cleaning process, if the excessive spilling circulating slot of cleanout fluid volume, then need, by cleanout fluid of draining after hydrochloric acid consumption substantially, to be carried out again according still further to after above-mentioned recipe configuration cleanout fluid.
After acidity cleaning terminates, need to be passivated processing for the metal surface after protection pickling.It is preferred that before Passivation Treatment, tubulation need to be circulated cleaning (step 102) with clear water, until the water ph value in the tubulation in cooling system terminates washing to 6～7.Specifically, this Passivation Treatment step 103 includes adding ionic membrane flake caustic and tertiary sodium phosphate, to be passivated fresh metal surface, thus forming protecting film.It is preferred that the solution concentration of this ionic membrane flake caustic is 2%～5%, the solution concentration of tertiary sodium phosphate is 0.5%～1%.Carrying out the passivation of 8～10 hours at normal temperatures, passivating solution of draining after terminating, thus terminating whole Chemical cleaning.
The chemical cleaning method of the present invention is simple, and easy to operate, cost is low, and the cleaning frequency is short, and after cleaning, fridge tubulation is corrosion-free, and parameter is properly functioning, can meet production requirement, has good application value.
As a preferred embodiment, also included before acidic cleaning step: each tubulation of the freezing unit of dredging.This machinery dredging processes specifically, is first unpicked and washed by tubulation, and the tubulation blocked for structure carries out machinery dredging, to ensure that tubulation is substantially unimpeded for Chemical cleaning offer condition below.Afterwards, checking each valve, the closure state of pipeline, when confirming not to reveal, then carry out acid cleaning.
Above disclosed it is only presently preferred embodiments of the present invention, certainly can not limit the interest field of the present invention, the equivalent variations therefore made according to the present patent application the scope of the claims with this, still belong to the scope that the present invention contains.
Claims (7)
1. a cleaning method for freezing unit, comprises the following steps:
Carrying out acid cleaning with acidic mixture, described acidic mixture includes following components: water, hydrochloric acid, pickling slow releasing agent, chloride ion slow releasing agent, surfactant, defoamer, viscosity remover；And
Passivation Treatment.
2. the cleaning method of freezing unit as claimed in claim 1, it is characterized in that, each component of described acidic mixture carries out proportioning according to following percentage by weight: water 60%～75%, hydrochloric acid 0.8%～1%, pickling slow releasing agent 0.5%～1%, chloride ion slow releasing agent 0.5%～1%, surfactant 20%～35%, defoamer 0.5%～1%, viscosity remover 0.5%～1%.
3. the cleaning method of freezing unit as claimed in claim 1, it is characterised in that acidic cleaning step also includes: wash cycles；Timing detection hydrochloric acid mass fraction.
4. the cleaning method of freezing unit as claimed in claim 3, it is characterised in that acidic cleaning step also includes: supplement hydrochloric acid when hydrochloric acid mass fraction is less than predetermined value, until terminating acid cleaning when hydrochloric acid mass fraction difference value is less than 1.5%.
5. the cleaning method of freezing unit as claimed in claim 1, it is characterised in that after acidic cleaning step, also include before Passivation Treatment: clear water wash cycles.
6. the cleaning method of freezing unit as claimed in claim 1, it is characterised in that described Passivation Treatment includes: add ionic membrane flake caustic and tertiary sodium phosphate.
7. the cleaning method of freezing unit as claimed in claim 1, it is characterised in that also include before acidic cleaning step: each tubulation of the freezing unit of machinery dredging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410843057.8A CN105806148A (en) | 2014-12-30 | 2014-12-30 | Cleaning method for refrigerating unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410843057.8A CN105806148A (en) | 2014-12-30 | 2014-12-30 | Cleaning method for refrigerating unit |
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| CN105806148A true CN105806148A (en) | 2016-07-27 |
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| CN201410843057.8A Pending CN105806148A (en) | 2014-12-30 | 2014-12-30 | Cleaning method for refrigerating unit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106191876A (en) * | 2016-08-30 | 2016-12-07 | 湖北省兴发磷化工研究院有限公司 | A kind of Cleaning and Passivation method of heat-exchange system equipment |
| CN110332849A (en) * | 2019-07-05 | 2019-10-15 | 杭州冠洁工业清洗水处理科技有限公司 | A kind of nuclear power station boron time system evaporator indissoluble dirt chemical cleaning method |
| CN110986660A (en) * | 2019-12-16 | 2020-04-10 | 平顶山金晶生物科技股份有限公司 | Cleaning agent and cleaning method for surface scale of heat exchange tube in concentration evaporation device |
| CN116625158A (en) * | 2023-05-19 | 2023-08-22 | 广州力盾环保工程有限公司 | Cleaning material for tube type heat exchanger and efficient cleaning method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862741A (en) * | 2009-04-17 | 2010-10-20 | 娄底市裕德科技有限公司 | Washing method of improved turbid circulating water system water supply main pipe |
| CN102965673A (en) * | 2012-11-28 | 2013-03-13 | 中国铝业股份有限公司 | Method for cleaning stainless steel impeller of water pump |
| CN103673747A (en) * | 2012-09-07 | 2014-03-26 | 王刚 | Fast washing equipment for large-size heat exchangers and washing method |
-
2014
- 2014-12-30 CN CN201410843057.8A patent/CN105806148A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862741A (en) * | 2009-04-17 | 2010-10-20 | 娄底市裕德科技有限公司 | Washing method of improved turbid circulating water system water supply main pipe |
| CN103673747A (en) * | 2012-09-07 | 2014-03-26 | 王刚 | Fast washing equipment for large-size heat exchangers and washing method |
| CN102965673A (en) * | 2012-11-28 | 2013-03-13 | 中国铝业股份有限公司 | Method for cleaning stainless steel impeller of water pump |
Non-Patent Citations (1)
| Title |
|---|
| 张福元 等: "冷冻机组的化学清洗技术", 《清洗世界》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106191876A (en) * | 2016-08-30 | 2016-12-07 | 湖北省兴发磷化工研究院有限公司 | A kind of Cleaning and Passivation method of heat-exchange system equipment |
| CN110332849A (en) * | 2019-07-05 | 2019-10-15 | 杭州冠洁工业清洗水处理科技有限公司 | A kind of nuclear power station boron time system evaporator indissoluble dirt chemical cleaning method |
| CN110986660A (en) * | 2019-12-16 | 2020-04-10 | 平顶山金晶生物科技股份有限公司 | Cleaning agent and cleaning method for surface scale of heat exchange tube in concentration evaporation device |
| CN116625158A (en) * | 2023-05-19 | 2023-08-22 | 广州力盾环保工程有限公司 | Cleaning material for tube type heat exchanger and efficient cleaning method |
| CN116625158B (en) * | 2023-05-19 | 2024-03-22 | 广州力盾环保工程有限公司 | Cleaning material for tube type heat exchanger and efficient cleaning method |
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Application publication date: 20160727 |