CN108330497A - A kind of chemically-cleaning device and cleaning method of low-temperature multi-effect seawater desalination device - Google Patents
A kind of chemically-cleaning device and cleaning method of low-temperature multi-effect seawater desalination device Download PDFInfo
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- CN108330497A CN108330497A CN201810283819.1A CN201810283819A CN108330497A CN 108330497 A CN108330497 A CN 108330497A CN 201810283819 A CN201810283819 A CN 201810283819A CN 108330497 A CN108330497 A CN 108330497A
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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
- C23G3/00—Apparatus for cleaning or pickling metallic material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/046—Treatment of water, waste water, or sewage by heating by distillation or evaporation under vacuum produced by a barometric column
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
A kind of chemically-cleaning device of low-temperature multi-effect seawater desalination device, include the purge tank connected with pipeline, cleaning liquid filter, medicament preparing pump, clean cycle pump, cleaning filter, it is characterized in that：The top of the purge tank is connected with water source inlet valve, and the bottom of the purge tank is connected with compressed air valve, and the purge tank, by piping connection, is connected with cleaning liquid filter with institute's medicament preparing pump between the purge tank and the dosing pump；The clean cycle pump left end is equipped with clean cycle pump intake valve, the cleaning solution that described clean cycle pump intake valve one end connects the medicament preparing pump sends out valve, and the cleaning solution liquid back pipe of several effect body bottoms, the clean cycle pump right end is equipped with clean cycle pump discharge valve, described clean cycle pump discharge valve one end is connected with cleaning filter, and the cleaning filter connects the cleaning agent feed line on each effect body top.
Description
Technical field
The present invention relates to a kind of cleaning device fields, and in particular to a kind of chemical cleaning of low-temperature multi-effect seawater desalination device
Device and cleaning method.
Background technology
Low temperature multi-effect seawater desalting system is current international, the domestic mainstream technology scheme for carrying out sea water desalination water.System
The mode of system generally use " water-electricity cogeneration " distills out desalination water using generating set steam heating seawater.Although system uses
The mode of cryogenic vacuum evaporation, some are taken from design prevents the technique of fouling, and is to prevent from exchanging heat in the process of running
A large amount of generations of dirt on pipe are usually added into the medicaments such as antisludging agent and antifoaming agent, but are exchanging heat pipe surface also in During Process of Long-term Operation
It is to have certain dirt to generate, influences system heat transfer and water consumption processed, steam is caused largely to consume and the raising of water price lattice processed.
Chemical cleaning is the main means effectively to solve the above problems, and usual equipment, which often runs 2-3, should carry out system
Cleaning.Cleaning is to be added by the way that a certain amount of acid and some other medicaments are added and imitate the spray of internal portion from top to bottom
Mode flushing heat exchanging pipe, bottom water recycling are pumped using clean cycle and carry out wash cycles, finally that the dirt on heat exchanger tube surface is clear
It washes and removes, usually dirt removal amount is up to 90% or more, experiment proves that with obvious effects.According to heat exchanger tube top in acid cleaning process
Dirty ingredient and distribution situation, technique mostly uses hydrochloric acid, sulfamic acid and other organic and inorganic acid and carries out pickling, and is aided with slow
Lose the chemical compositions such as agent, antifoaming agent, surfactant.Fouling is serious on pipeline be especially in the presence of indissoluble dirt in the case of, then
The techniques such as " alkali cleaning " or " neutrality is washed " should also be used.After waste liquid after cleaning generally answers neutralized equal subsequent treatment process, carry out
Discharge or integrated treatment.
The case of country's large-scale low-temperature multi-effect seawater desalination system business operation is less at present, mostly with power plant or steel mill
In conjunction with progress, and equipment is mostly that imported product or foreign technology are produced, and still continues to use foreign technology data mutually inside the Pass
Hold and require to be cleaned, wash number and experience are less, do not reach further digestion and autonomous innovation, do not form system
The chemical cleaning technology flow and method of property.From the point of view of the cleaning performance of existing scheme, often occur in cleaning process due to work
Skill flow is not specific, operate and control it is improper and cause heat exchanger tube surface corrosion or cleaning performance it is bad and caused by " cross and wash " and
" owing to wash " phenomenon, cleaning process caused by cleaning agent matches unbalanced, detection not in time is uncontrolled, taken in cleaning process,
It consumes medicine and generates situations such as wastewater flow rate is larger, overall effect is undesirable.
The objective disadvantage of the prior art：
(1) existing chemical cleaning system mostly using Mobile cleaning vehicle or using interim large-scale storage tank and is aided with interim pipe
Road and valve system are cleaned, and are needed to rent more equipment and be constructed, cause the consumption of manpower and financial resources, are improved clear
Wash cost.The present invention is using the existing grug feeding jar of low-temperature multiple-effect seawater desalination (using the low-temperature multi-effects seawater such as antisludging agent, antifoaming agent
Desalination system corollary apparatus can also set up special small-sized pickling tank), it is only necessary to the connection of simple pump and pipeline can be realized
The cleaning of device.
(2) existing chemical cleaning system mostly uses the medicament that configuration blender carries out in cleaning process and mixes, mixed effect
Difference, time are long.The present invention solves above-mentioned ask in such a way that pump discharge cycle plus bottom compressed air are stirred and are mixed
Topic, verified medicament dissolution speed is fast, good mixing effect, and avoids what normal working practices blender was fluctuated in pot liquid
It is damaged caused by possibility in the process.
(3) conventional chemical cleaning is low due to cleaning water temperature, is unable to reach preferable cleaning condition, uses steam-heated side
Formula, temperature control difficulty is big, easily causes hot-spot phenomenon, more demanding to cleaning system material.The present invention directly utilizes neighbour
The first effect condensed water (maximum temperature is in 70 degrees centigrades) of close desalination plant, after being simply mixed, water temperature, that is, reachable
To cleaning requirement, and water supply is sufficient, stablizes.
(4) conventional chemical cleaning uses interim purge tank and system, and time of compounding is longer, has matched a tank medicine and pickling system is added
After system, it is also necessary to repeat above operation, the fluctuation of concentration of medicament in systems is larger, can not achieve " continuous, online " mode and throws
Add cleaning agent, easily causes cleaning surface in the short time and occurred washing phenomenon.
(5) conventional clean process is mostly an effect group parallel feed cleaning way, the different effect body of fouling is used same
The cleaning solution of one concentration causes the serious effect body " owing to wash " of fouling and the lighter effect body of fouling " mistake is washed " phenomenon, can not achieve
Targetedly cleaning process " cannot be freely combined " and switch online, scavenging period is caused to extend, a large amount of cleaning solutions wastes.
(6) dispensing system described in this case can also carry out many kinds of solids, liquid preparation adding and preparing, and increase and be
The flexibility of system and adaptability.
(7) conventional cleaning process cleaning solution and circulation fluid undercompounding, easily cause clean cycle liquid concentration deviation, seriously
Influence cleaning performance.
(8) routine cleaning cycles process, circulation fluid easily carry the sundries such as the dirty sample stripped down, silt, glutinous mud, coat of paint
Plug nozzle influences circulation fluid and is evenly distributed to each heat-exchanging tube bundle of evaporator, and then influences to wash effect.
Invention content
In view of the above-mentioned problems, the purpose of the present invention is to provide a kind of chemical cleaning of low-temperature multi-effect seawater desalination device dresses
It sets and cleaning method.
Technical solution is used by the present invention solves above-mentioned technical problem：A kind of change of low-temperature multi-effect seawater desalination device
Learn cleaning device, include the purge tank connected with pipeline, cleaning liquid filter, medicament preparing pump, clean cycle pump, cleaning filter,
It is characterized in that：The top of the purge tank is connected with water source inlet valve, and the bottom of the purge tank is connected with compressed air valve,
The purge tank, by piping connection, is connected with cleaning solution filtering with institute's medicament preparing pump between the purge tank and the dosing pump
Device；Clean cycle pump intake end is equipped with clean cycle pump intake valve, described in the connection of described clean cycle pump intake valve one end
The cleaning solution of medicament preparing pump sends out valve and the cleaning solution liquid back pipe of several effect body bottoms, and the clean cycle pump right end is equipped with clear
Outlet valve of circulating pump is washed, described clean cycle pump discharge valve one end is connected with cleaning filter, and the cleaning filter connection is each
Imitate the cleaning agent feed line on body top.
Further, the cleaning liquid filter both ends are equipped with separation valve door.
Further, it is equipped with fluid level transmitter at the top of the purge tank.
Further, cleaning solution sampling valve is set after the cleaning filter.
Further, cleaning solution return valve is set on the cleaning solution return line.
A kind of cleaning method of chemically-cleaning device using low-temperature multi-effect seawater desalination device, it is characterised in that：
S1：Water source imported valve 1 is opened, a certain amount of clear water is injected inside purge tank, and can be wanted according to cleaning temperature
It asks and a certain amount of adjacent operation seawater desalination system head effects condensed water is added, carry out mixture by a certain percentage as needed to adjust
Medicament configuration temperature or cleaning solution temperature；Medicament preparing pump inlet valve 14 is opened, the cleaning solution configured is put into washing lotion filter,
Start medicament preparing pump, medicament preparing pump outlet valve is opened after normal operation and opens the circulation valve that makes up a prescription；
S2：After confirming purge tank level stability, compressed air valve, input stirring compressed air gas source, by prior are opened
Cleaning drug is added in determining ratio, and stir 10 minutes or more, ensure that it is uniformly mixed；
S3：Confirm the single effect body to be cleaned or the arbitrary 2-5 combination for needing cleaning effect arranged side by side, it is pre- in effect body bottom
It is first poured in its water that can guarantee clean cycle pump normal operation, pickling pump entry valve is opened and is started, pump fortune
It after row is stablized, opens its outlet valve and puts into pump discharge filter, carry out clean cycle, whether confirmation has spill-free and liquid level
Stablize, the evaporator feed water flow gauge instruction of the effect body and effect body group inlet to be cleaned is normal, in the range of requiring；
S4：Cleaning pump filter washing water inlet valve and cleaning solution backwater valve are opened, closes to open to make up a prescription and circulating valve and adjusts
Cleaning solution circulation control valve is gradually mixed into the pickling circulatory system to appropriate location, by the corrosion inhibiter in pickling tank, and in purge tank
In by 10% concentration prepare cleaning solution, after confirming that cleaning solution is added to the pickling circulatory system, prepared again clearly every 20-30 minute
Washing lotion, and it is transported to cleaning system, reach expectation index；
S5：It repeats above operation, and opens cleaning solution sampling valve and be sampled detection, when detection concentration of lotion reaches rule
When definite value, stop this clean cycle.
The advantage of the invention is that：
(1) the front and back temporary system rental of cleaning, transport, installation, debugging are reduced by using original field device and system
Etc. all too many levels, goods and materials and cost of labor are reduced, shortens the above period to work, has for the creation that smoothly completes of cleaning
Sharp condition.
(2) it carries out cleaning solution processed by using desalination plant head effect condensed waters to configure, be disturbed using compressed air mixed
It closes and continuous make up a prescription online waits many kinds of measures, preferably ensure that the conditions such as concentration of lotion is uniform, cleaning temperature is stablized, ensure
Wash course is reliable and stable.
(3) it can be achieved to any one effect body individually cleaning of seawater desalination system or arbitrary 2-5 effect body combined type cleaning, clearly
It is larger to wash flexibility, can be combined according to fouling condition and cleaning process Checking on effect etc. and be cleaned with emphasis, and can flexibly cut
It changes, reduces scavenging period to the maximum extent, and improve the utilization rate of cleaning solution.
(4) using " continuous, online " acid adding mode, dosage is uniform and stable, be conducive to cleaning process stability and can
Control property.
(5) dispensing system of the present apparatus can realize the neutralization of the medicament of cleaning final stage, and connecing can return after drawing outer row pipeline
Receive or drain into appointed place, avoid because in imitating internal portion and due to caused by exchange the influence of heat pipe, and after preventing cleaning
Dirt adheres to again on heat-transfer surface.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the pipeline connecting figure of cleaning device when mordant is added.
Wherein：
1, water source inlet valve；2, fluid level transmitter；3, compressed air valve；4, liquid filter is cleaned；
5, cleaning solution circulation control valve；6, cleaning solution sampling valve；7, filter is cleaned；8, clean cycle pumps；
9, evaporator inlet valve；10, evaporator feed water flow gauge；11, cleaning solution return valve；12, cleaning solution sends out valve；
13, purge tank 14, medicament preparing pump inlet valve 15, medicament preparing pump 16, medicament preparing pump outlet valve；
17, make up a prescription circulating valve；18, body is imitated；19, pickling pump entry valve；20, pickling outlet valve of circulating pump；
21, cleaning solution inlet tube；22, cleaning solution liquid back pipe；
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for description purposes only, and is not understood to indicate or imply relative importance.
As shown in Figure 1, a kind of chemically-cleaning device of low-temperature multi-effect seawater desalination device, includes the cleaning connected with pipeline
Tank, cleaning liquid filter 4, medicament preparing pump, clean cycle pump 8, cleaning filter 7, it is characterized in that：The top of the purge tank connects
It is connected to water source inlet valve, the bottom of the purge tank is connected with compressed air valve 3, and the purge tank passes through pipeline with institute's medicament preparing pump
Connection is connected with cleaning liquid filter 4 between the purge tank and the dosing pump；The clean cycle pumps 8 left ends and is equipped with clearly
8 inlet valve of circulating pump is washed, the clean cycle pumps the cleaning solution submitting valve 12 that 8 inlet valve one end connect the medicament preparing pump, and
The cleaning solution liquid back pipe 22 of 18 bottom of several effect bodies, the clean cycle pumps 8 right ends and is equipped with clean cycle 8 outlet valves of pump, described
Clean cycle pumps 8 outlet valve one end and is connected with cleaning filter 7, and the cleaning filter 7 connects the cleaning on 18 top of each effect body
Agent feed line, 4 both ends of cleaning liquid filter are equipped with medicament preparing pump inlet valve, level transmitting are equipped at the top of the purge tank
Cleaning solution return valve is arranged on the cleaning solution return line in device 2, setting cleaning solution sampling valve 6 after the cleaning filter 7
11。
Working method:
A kind of cleaning method of chemically-cleaning device using low-temperature multi-effect seawater desalination device:
S1：Open water source inlet valve 1, injected inside purge tank a certain amount of clear water (by fluid level transmitter 2 indicate or
Liquid level gauge is observed on the spot, is controlled by half of tank highest liquid level or so), and can require to be added according to cleaning temperature a certain amount of
Adjacent operation seawater desalination system head imitate condensed water, as needed by a certain percentage carry out mixture with regulating agent configure temperature
Or cleaning solution temperature；Medicament preparing pump inlet valve is opened, the cleaning solution configured is put into washing lotion filter, starts medicament preparing pump, fortune
Medicament preparing pump outlet valve is opened after row is normal and opens the circulating valve 17 that makes up a prescription, and carries out dispensing system partial circulating；
S2：After confirming purge tank level stability, compressed air valve 3, input stirring compressed air gas source, by prior are opened
Cleaning drug is added in determining ratio, it is generally the case that first, in accordance with the requirement 2%-4% of effect body 18 effect 18 wash water volume of body clearly
Ratio dedicated cleaning corrosion inhibiter is added, and stirs 10 minutes or more, ensure that it is uniformly mixed；
S3：The single effect body 18 to be cleaned or the arbitrary 2-5 combination for needing cleaning effect arranged side by side are confirmed, at 18 bottom of effect body
Portion is poured in it and can guarantee that clean cycle pumps the water of 8 normal operations in advance, and water is usually 50% left side of liquid level gauge instruction liquid level
The right side opens evaporator inlet valve 9 (pressing cleaning requirement, it may be possible to one or more), opens 19, pickling pump entry valve simultaneously
Started, pump operation stablize after, open its outlet valve and put into pump discharge filter, carry out clean cycle, confirm whether there is or not
It sews and whether liquid level is stablized, the instruction of evaporator feed water flow gauge 10 of the 18 groups of inlet of effect body 18 and effect body to be cleaned is just
Often, in the range of requiring；
S4：Cleaning pump filter washing water inlet valve and cleaning solution backwater valve are opened, closes to open to make up a prescription and circulating valve 17 and adjust
Whole cleaning solution circulation control valve 5 arrives appropriate location, the corrosion inhibiter in pickling tank is gradually mixed into the pickling circulatory system, and cleaning
Cleaning solution is prepared by 10% concentration in tank, after confirming that cleaning solution is added to the pickling circulatory system, was prepared again every 20-30 minutes
Cleaning solution, and it is transported to cleaning system, reach expectation index；
S5：It repeats above operation, and opens cleaning solution sampling valve 6 and be sampled detection, when detection concentration of lotion reaches
When specified value, stop this clean cycle.
If can be pressed out of pickling tank when a large amount of foams of appearance from manhole inside effect body 18 in cleaning process
200ml/ addition antifoaming agent, until foam is effectively suppressed.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (6)
- Include the purge tank connected with pipeline, cleaning solution mistake 1. a kind of chemically-cleaning device of low-temperature multi-effect seawater desalination device Filter, medicament preparing pump, clean cycle pump, cleaning filter, it is characterized in that：The top of the purge tank is connected with water source import Valve, the bottom of the purge tank are connected with compressed air valve, the purge tank with the medicament preparing pump by piping connection, it is described clear Cleaning liquid filter is connected between cleaning of evaporator and the medicament preparing pump；The clean cycle pump intake is equipped with clean cycle pump intake Valve, the cleaning solution that described clean cycle pump intake valve one end connects the medicament preparing pump send out the clear of valve and several effect body bottoms Washing lotion liquid back pipe, the clean cycle pump discharge are equipped with clean cycle pump discharge valve, and described clean cycle pump discharge valve one end connects It is connected to cleaning filter, the cleaning filter connects the cleaning agent feed line on each effect body top.
- 2. a kind of chemically-cleaning device of low-temperature multi-effect seawater desalination device as described in claim 1, which is characterized in that described It cleans liquid filter both ends and is equipped with the separation valve door dismantled convenient for filter cleaning process.
- 3. a kind of chemically-cleaning device of low-temperature multi-effect seawater desalination device as described in claim 1, which is characterized in that described Fluid level transmitter is equipped at the top of purge tank.
- 4. a kind of chemically-cleaning device of low-temperature multi-effect seawater desalination device as described in claim 1, which is characterized in that described It cleans filter outlet and cleaning solution sampling valve is set.
- 5. a kind of chemically-cleaning device of low-temperature multi-effect seawater desalination device as described in claim 1, which is characterized in that described Cleaning solution return valve is set on cleaning solution return line.
- 6. a kind of cleaning side of chemically-cleaning device using low-temperature multi-effect seawater desalination device as described in claim 1-5 Method, it is characterised in that：S1：Water source imported valve 1 is opened, a certain amount of clear water is injected inside purge tank, and can require to add according to cleaning temperature Enter a certain amount of adjacent operation seawater desalination system head effects condensed water, carries out mixture by a certain percentage as needed with regulating agent Configure temperature or cleaning solution temperature；Medicament preparing pump inlet valve 14 is opened, the cleaning solution configured is put into cleaning liquid filter, is opened Medicament preparing pump is moved, medicament preparing pump outlet valve is opened after normal operation and opens the circulation valve that makes up a prescription；S2：After confirming purge tank level stability, compressed air valve, input stirring compressed air gas source, by being determined in advance are opened Ratio cleaning drug is added, and stir 10 minutes or more, ensure that it is uniformly mixed；S3：Confirm the single effect body to be cleaned or the arbitrary 2-5 combination for needing cleaning effect arranged side by side, is noted in advance in effect body bottom Good its can guarantee that clean cycle pumps the water of normal operation, opens pickling pump entry valve and is simultaneously started, pump operation is steady It after fixed, open its outlet valve and puts into pump discharge filter, carry out clean cycle, whether confirmation has spill-free and liquid level steady Fixed, the evaporator feed water flow gauge instruction of the effect body and effect body group inlet to be cleaned is normal, in the range of requiring；S4：Cleaning pump filter washing water inlet valve and cleaning solution backwater valve are opened, opens to make up a prescription circulating valve and adjust cleaning solution and follow Ring control valve is gradually mixed into the pickling circulatory system to appropriate location, by the corrosion inhibiter in pickling tank, and 10% is pressed in purge tank Concentration prepares cleaning solution,S5:After confirming that cleaning solution is added to the pickling circulatory system, cleaning solution was prepared again every 20-30 minutes, and be conveyed To cleaning system, expectation index is reached；S6：It repeats above operation, and opens cleaning solution sampling valve and be sampled detection, when detection concentration of lotion reaches specified value When, stop this clean cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810283819.1A CN108330497B (en) | 2018-04-02 | 2018-04-02 | Chemical cleaning device and cleaning method for low-temperature multi-effect seawater desalination device |
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| CN201810283819.1A CN108330497B (en) | 2018-04-02 | 2018-04-02 | Chemical cleaning device and cleaning method for low-temperature multi-effect seawater desalination device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109495987A (en) * | 2018-10-24 | 2019-03-19 | 四川同人精工科技有限公司 | A kind of electrical heating elements deformation detection control system |
| CN112344777A (en) * | 2019-08-08 | 2021-02-09 | 中国石油化工股份有限公司 | Spiral plate heat exchange system and back washing method thereof |
| CN112815767A (en) * | 2021-01-15 | 2021-05-18 | 中国神华能源股份有限公司国华电力分公司 | Cleaning method of seawater desalination device |
| CN115228855A (en) * | 2022-07-27 | 2022-10-25 | 重庆朝阳气体有限公司 | Method for cleaning standard gas equipment pipeline |
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