CN101736349A - Pickling method and pickling device of low-temperature multi-effect sea water desalting equipment - Google Patents
Pickling method and pickling device of low-temperature multi-effect sea water desalting equipment Download PDFInfo
- Publication number
- CN101736349A CN101736349A CN200910146439A CN200910146439A CN101736349A CN 101736349 A CN101736349 A CN 101736349A CN 200910146439 A CN200910146439 A CN 200910146439A CN 200910146439 A CN200910146439 A CN 200910146439A CN 101736349 A CN101736349 A CN 101736349A
- Authority
- CN
- China
- Prior art keywords
- pickling
- fresh water
- passivation
- sea water
- acid
- Prior art date
- 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.)
- Granted
Links
- 238000005554 pickling Methods 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000013535 sea water Substances 0.000 title claims abstract description 26
- 238000011033 desalting Methods 0.000 title claims abstract description 17
- 238000002161 passivation Methods 0.000 claims abstract description 23
- 239000013505 freshwater Substances 0.000 claims abstract description 18
- 229910001369 Brass Inorganic materials 0.000 claims abstract description 7
- 239000010951 brass Substances 0.000 claims abstract description 7
- 238000005260 corrosion Methods 0.000 claims abstract description 7
- 230000007797 corrosion Effects 0.000 claims abstract description 7
- 238000007689 inspection Methods 0.000 claims abstract description 3
- 239000002253 acid Substances 0.000 claims description 42
- 238000012546 transfer Methods 0.000 claims description 23
- 238000005406 washing Methods 0.000 claims description 18
- 239000006200 vaporizer Substances 0.000 claims description 17
- 239000000243 solution Substances 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 9
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 claims description 8
- 239000012266 salt solution Substances 0.000 claims description 7
- 238000011010 flushing procedure Methods 0.000 claims description 6
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 5
- 239000012964 benzotriazole Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 3
- 239000013530 defoamer Substances 0.000 claims description 3
- 238000005530 etching Methods 0.000 claims description 3
- 235000011194 food seasoning agent Nutrition 0.000 claims description 3
- 239000012267 brine Substances 0.000 abstract description 7
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 abstract description 5
- 239000004411 aluminium Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000002518 antifoaming agent Substances 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000003112 inhibitor Substances 0.000 abstract 1
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 abstract 1
- 230000020477 pH reduction Effects 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000003245 working effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention relates to a pickling method and a pickling device of low-temperature multi-effect sea water desalting equipment. The pickling method comprises the steps of rinsing with fresh water, pickling and rinsing with the fresh water again. A medium in the pickling step comprises 3-10% of sulfamic acid, 0.2-0.8% of corrosion inhibitor and a proper amount of defoaming agent and fresh water; the pickling temperature is 50-60 DEG C; and the sprinkle density of the pickling medium outside a heat exchange tube to be pickled is 0.03-0.05kg/(m*s), and the pickling time is 6-8 hours. The pickling device utilizes a brine discharge pump of a traditional system as a pickling circulation pump, simplifies a pickling system, adopts the combined acidification equipment of a movable type pickling tank and is convenient for the pickling operation; and the pickling method adds a pickling inspection step after pickling, ensures the pickling effect, forms a favorable passivating film outside the pickled aluminium brass heat exchange tube by a passivation step, enhances the corrosion resistance of the heat exchange tube resisting sea water and strong brine and prolongs the service life of the heat exchange tube.
Description
Technical field
The present invention relates to a kind of acid washing method and pickler, particularly relate to a kind of acid washing method and pickler of low-temperature multiple-effect sea water desalting equipment.
Background technology
The heat exchange material of low-temperature multiple-effect sea water desalting equipment is aluminium brazed copper tube (HAL77-2) mostly, and the heat transfer tube in the general vaporizer all is horizontally disposed.In evaporative process, mobile is a steam in the heat transfer tube, and seawater carries out falling liquid film and flows outside pipe.In the process of low-temperature multiple-effect sea water desalting equipment operation,, can reduce heat exchange efficiency, produce energy dissipation, need in time carry out matting, recover the cleaning on heat transfer tube surface if scale formation takes place.
The present domestic matting guide rule that has only condenser of power plant does not have the guide rule of seawater desalination evaporators.The chemical cleaning technique of vaporizer is different with condenser, and the heat-exchanging tube bundle fouling of vaporizer is to occur in outside the heat transfer tube, and the design of cleaning system is with to clean technology controlling and process such as flow velocity all different with Summary of clean condenser.
But existing low-temperature multiple-effect sea water desalting equipment pickling technology and imperfection do not have pickling cleaning standard, simultaneously, do not consider that the passivation film forming after the pickling of aluminum brass pipe is handled yet.
Summary of the invention
The objective of the invention is to overcome the defective of above-mentioned prior art and a kind of easy acid washing method and pickler of designing is provided, to reach cleaning and descaling effect preferably, and form the well passivated film on the surface of copper pipe after the pickling, to improve the erosion resistance of copper pipe, prolong copper pipe work-ing life.
For achieving the above object, the present invention takes following design:
The acid washing method of a kind of low-temperature multiple-effect sea water desalting equipment of the present invention comprises fresh water flushing, pickling and fresh water rinse step again, and the medium of described acid pickling step comprises 3%～10% thionamic acid (NH
3SO
3H), 0.2～0.8% inhibiter, and appropriate amount of defoamer and fresh water; Pickling temperature is 50～60 ℃; The specific liquid rate of described pickling medium is 0.03～0.05kg/ (ms) outside treating the heat transfer tube of pickling, and the pickling time is 6～8 hours.
Preferably, described acid washing method also comprises the passivation step after the pickling, described passivation step comprises: the step of fresh water flushing, passivation film forming and air seasoning, the medium of described passivation film forming step comprises that pH value is 6～9 benzotriazole (BTA) 100～200mg/L and an amount of fresh water, and passivation temperature and time are normal temperature passivated 6～8 hours.
Preferably, described acid washing method also comprises the pickling effectiveness checking procedure: before the pickling, in the inner setting of the sea water desalting equipment pickling system inspection test piece identical with heat exchange tube material.Check after the pickling that heat transfer tube has the noresidue hard scale outward, the outer descaling rate of heat transfer tube is qualified more than or equal to 85%.The outer descaling rate of heat transfer tube is good more than or equal to 95% after the pickling.After the pickling, the average corrosion rate of test-based examination test piece.Require: average corrosion rate is less than 1g/ (m
2H), total etching extent is less than 10g/m
2
Preferably, described passivation step also comprises the film forming validity check step of passivation: drip molten check with 20% ammoniacal liquor, the time that adds the test tube surface from drop begins to clock, the time of exposing the brass base true qualities to the area of molten point more than 50% is the terminal point that clocks, the molten film time of mercapto benzothiazole (MBT) film was qualified more than or equal to 15 seconds, and the molten film time was good more than or equal to 30 seconds.
Another object of the present invention provides a kind of pickler of low-temperature multiple-effect sea water desalting equipment, comprise the acid solution case, described acid solution case links to each other with pump by pipeline, described pump is respectively imitated spray equipment by vaporizer pan feeding seawater house steward with vaporizer and is linked to each other, described vaporizer is respectively imitated spray equipment and is led to the salt solution hot well via heat-exchanging tube bundle, and described salt solution hot well is respectively imitated spray equipment via described pump and described vaporizer and is formed the loop.
Preferably, described pump is a brinepump.Described acid solution case is portable acid solution case.
Advantage of the present invention is: because pickler of the present invention has utilized the brine discharge pump of existing system to make the pickling recycle pump, simplified pickling system thus, and adopted sour clustered aggregates of adding of portable acid cleaning tank, made things convenient for the pickling operation; In addition, the parameter control of acid cleaning process that acid washing method of the present invention is perfect, increased the pickling checking procedure after the pickling, guaranteed pickling effectiveness, and after pickling, formed good passive film by passivation step outside the aluminum brass heat transfer tube, improve the corrodibility of heat transfer tube sea water resistance and anti-strong brine, prolonged the work-ing life of heat transfer tube.
Description of drawings
Fig. 1 is the synoptic diagram of pickler of the present invention.
Embodiment
Referring to Fig. 1, the preferred embodiment of the pickler of a kind of low-temperature multiple-effect sea water desalting equipment of the present invention shown in it, comprise acid solution case 1, described acid solution case 1 links to each other with pump 2 by pipeline, described pump 2 with respectively imitate spray equipment 3 by vaporizer pan feeding seawater house steward 4 with vaporizer and link to each other, described vaporizer is respectively imitated spray equipment 3 and is led to salt solution hot well (not shown) via heat-exchanging tube bundle 5, and described salt solution hot well is respectively imitated spray equipment 3 via described pump 2 and described vaporizer and formed the loop.Preferably, described pump 2 is the brinepump of existing pickler.Described acid solution case 1 is portable acid solution case.And, between described acid solution case 1 and pump 2, also be provided with and add sour pump 6.
The use of pickler of the present invention is:
Portable acid solution case 1 → add sour pump 6 → brine discharge pump intake pipeline → brinepump 2 → vaporizer pan feeding seawater house steward 4 → vaporizer respectively to imitate sprinkling system 3 → heat-exchanging tube bundle 5 → salt solution hot well → brinepump 2.Form a local circulation pickler thus.So the present invention has utilized the original brine discharge pump of existing system as the pickling recycle pump, has simplified pickling system, and has adopted portable pickling to add sour clustered aggregates, has made things convenient for the operation of acid cleaning process.
The acid washing method of a kind of low-temperature multiple-effect sea water desalting equipment of the present invention comprises fresh water flushing, pickling and fresh water rinse step again, and the medium of described acid pickling step comprises 3%～10% thionamic acid (NH
2SO
3H), 0.2～0.8% inhibiter, and appropriate amount of defoamer and fresh water; Pickling temperature is 50～60 ℃; The specific liquid rate of described pickling medium is 0.03～0.05kg/ (ms) outside treating the heat transfer tube of pickling, and the pickling time is 6～8 hours.
Acid washing method of the present invention also comprises the passivation step after the pickling, comprise: the step of fresh water flushing, passivation film forming and air seasoning, the medium of described passivation film forming step comprises that pH value is 6～9 benzotriazole (BTA) 100～200mg/L and an amount of fresh water, and passivation temperature and time are normal temperature passivated 6～8 hours.
Acid washing method of the present invention also comprises the validity check step after the pickling:
Before the pickling, in the inner setting of the sea water desalting equipment pickling system test piece identical with heat exchange tube material, average corrosion rate should be less than 1g/ (m
2H), total etching extent should be less than 10g/m
2
After the pickling, check that heat transfer tube has the noresidue hard scale outward.Essentially no residual hard scale outside the heat transfer tube after pickling, the outer descaling rate of heat transfer tube is qualified more than or equal to 85% after the pickling; The outer descaling rate of heat transfer tube is good more than or equal to 95% after the pickling.
The present invention also comprises the film forming validity check step of passivation: drip molten check with 20% ammoniacal liquor, the time that adds the test tube surface from drop begins to clock, the time of exposing the brass base true qualities to the area of molten point more than 50% is the terminal point that clocks, the molten film time of MBT film was qualified more than or equal to 15 seconds, and the molten film time was good more than or equal to 30 seconds.
The parameter control of acid cleaning process that the present invention is perfect, increase the passivation film-forming process after the pickling, guaranteed pickling effectiveness, and outside the aluminum brass heat transfer tube, formed good passive film after the pickling, improve the corrodibility of heat transfer tube sea water resistance and strong brine, prolonged heat transfer tube work-ing life.
Obviously, those of ordinary skill in the art can constitute various types of acid washing methods and pickler with the acid washing method and the pickler of a kind of low-temperature multiple-effect sea water desalting equipment of the present invention.
The foregoing description is only for the usefulness that the present invention is described; and be not to be limitation of the present invention; the those of ordinary skill in relevant technologies field; without departing from the present invention; can also make various variations and modification; therefore all technical schemes that are equal to also should belong to category of the present invention, and scope of patent protection of the present invention should be limited by each claim.
Claims (8)
1. the acid washing method of a low-temperature multiple-effect sea water desalting equipment, comprise fresh water flushing, pickling and fresh water rinse step again, it is characterized in that: the medium of described acid pickling step comprises 3%～10% thionamic acid, 0.2～0.8% inhibiter, and appropriate amount of defoamer and fresh water; Pickling temperature is 50～60 ℃; The specific liquid rate of described pickling medium is 0.03～0.05kg/ (ms) outside treating the heat transfer tube of pickling, and the pickling time is 6～8 hours.
2. acid washing method according to claim 1 is characterized in that: also comprise the passivation step after the pickling, described passivation step comprises:
The step of fresh water flushing, passivation film forming and air seasoning, the medium of described passivation film forming step comprise that pH value is 6～9 benzotriazole 100～200mg/L and an amount of fresh water, and passivation temperature and time are normal temperature passivated 6～8 hours.
3. acid washing method according to claim 1 and 2 is characterized in that: also comprise the pickling effectiveness checking procedure:
Before the pickling, in the inner setting of the sea water desalting equipment pickling system inspection test piece identical with heat exchange tube material;
After the pickling, check that heat transfer tube has the noresidue hard scale outward.
4. acid washing method according to claim 3 is characterized in that: the outer descaling rate of heat transfer tube is qualified more than or equal to 85% after the pickling, and the outer descaling rate of heat transfer tube is good more than or equal to 95% after the pickling; After the pickling, measure the average corrosion rate of checking test piece, average corrosion rate is less than 1g/ (m
2H), total etching extent is less than 10g/m
2
5. acid washing method according to claim 2 is characterized in that: also comprise the film forming validity check step of passivation:
Heat exchange pipe external surface after passivation, drip molten check with 20% ammoniacal liquor, the time that adds the test tube surface from drop begins to clock, the time of exposing the brass base true qualities to the area of molten point more than 50% is the terminal point that clocks, the molten film time of mercapto benzothiazole film was qualified more than or equal to 15 seconds, and the molten film time was good more than or equal to 30 seconds.
6. pickler according to the described low-temperature multiple-effect sea water desalting equipment of above-mentioned any one claim, it is characterized in that: comprise acid solution case (1), described acid solution case (1) links to each other with pump (2) by pipeline, described pump (2) is respectively imitated spray equipment (3) by vaporizer pan feeding seawater house steward (4) with vaporizer and is linked to each other, described vaporizer is respectively imitated spray equipment (3) and is led to the salt solution hot well via heat-exchanging tube bundle (5), and described salt solution hot well is respectively imitated spray equipment (3) via described pump (2) and described vaporizer and is formed the loop.
7. pickler according to claim 6 is characterized in that: described pump (2) is a brinepump.
8. pickler according to claim 7 is characterized in that: described acid solution case (1) is portable acid solution case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101464394A CN101736349B (en) | 2008-11-20 | 2009-06-03 | Pickling method and pickling device of low-temperature multi-effect sea water desalting equipment |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810226711.5 | 2008-11-20 | ||
| CN200810226711 | 2008-11-20 | ||
| CN2009101464394A CN101736349B (en) | 2008-11-20 | 2009-06-03 | Pickling method and pickling device of low-temperature multi-effect sea water desalting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101736349A true CN101736349A (en) | 2010-06-16 |
| CN101736349B CN101736349B (en) | 2012-01-11 |
Family
ID=42460366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101464394A Active CN101736349B (en) | 2008-11-20 | 2009-06-03 | Pickling method and pickling device of low-temperature multi-effect sea water desalting equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101736349B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644832A (en) * | 2012-05-18 | 2012-08-22 | 濮阳市海林特种设备制造防护有限公司 | Protection/repairing technique for cooling system of compressor |
| CN102644070A (en) * | 2012-05-18 | 2012-08-22 | 濮阳市海林特种设备制造防护有限公司 | Tube pass-plating method for air cooler |
| CN102732901A (en) * | 2012-07-12 | 2012-10-17 | 众和海水淡化工程有限公司 | Washing optimizing method and device of low-temperature multi-effect evaporation seawater desalting device |
| CN103602999A (en) * | 2013-11-18 | 2014-02-26 | 中国神华能源股份有限公司 | Pickling agent composition and pickling method of sea water desalting device |
| CN104438191A (en) * | 2014-09-17 | 2015-03-25 | 神华集团有限责任公司 | Cleaning method for demister panel |
| CN107321127A (en) * | 2017-07-06 | 2017-11-07 | 大唐东北电力试验研究所有限公司 | Ammoniacal liquor recovery system and method in thermal power plant's condenser |
| CN107739090A (en) * | 2017-10-24 | 2018-02-27 | 中节能（合肥）可再生能源有限公司 | A kind of online acid dip pickle of anaerobism |
| CN108645275A (en) * | 2018-04-26 | 2018-10-12 | 首钢京唐钢铁联合有限责任公司 | Low-temperature multiple-effect seawater desalination cleaning and descaling system and cleaning and descaling method |
| CN109877097A (en) * | 2019-03-29 | 2019-06-14 | 瓮福达州化工有限责任公司 | The cleaning method of wet phosphoric acid purifying technique concentration systems |
-
2009
- 2009-06-03 CN CN2009101464394A patent/CN101736349B/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644832A (en) * | 2012-05-18 | 2012-08-22 | 濮阳市海林特种设备制造防护有限公司 | Protection/repairing technique for cooling system of compressor |
| CN102644070A (en) * | 2012-05-18 | 2012-08-22 | 濮阳市海林特种设备制造防护有限公司 | Tube pass-plating method for air cooler |
| CN102644070B (en) * | 2012-05-18 | 2013-10-16 | 濮阳市海林特种设备制造防护有限公司 | Tube pass-plating method for air cooler |
| CN102732901A (en) * | 2012-07-12 | 2012-10-17 | 众和海水淡化工程有限公司 | Washing optimizing method and device of low-temperature multi-effect evaporation seawater desalting device |
| CN103602999A (en) * | 2013-11-18 | 2014-02-26 | 中国神华能源股份有限公司 | Pickling agent composition and pickling method of sea water desalting device |
| CN104438191A (en) * | 2014-09-17 | 2015-03-25 | 神华集团有限责任公司 | Cleaning method for demister panel |
| CN107321127A (en) * | 2017-07-06 | 2017-11-07 | 大唐东北电力试验研究所有限公司 | Ammoniacal liquor recovery system and method in thermal power plant's condenser |
| CN107739090A (en) * | 2017-10-24 | 2018-02-27 | 中节能（合肥）可再生能源有限公司 | A kind of online acid dip pickle of anaerobism |
| CN108645275A (en) * | 2018-04-26 | 2018-10-12 | 首钢京唐钢铁联合有限责任公司 | Low-temperature multiple-effect seawater desalination cleaning and descaling system and cleaning and descaling method |
| CN108645275B (en) * | 2018-04-26 | 2020-09-18 | 首钢京唐钢铁联合有限责任公司 | Low-temperature multi-effect seawater desalination cleaning and descaling system and cleaning and descaling method |
| CN109877097A (en) * | 2019-03-29 | 2019-06-14 | 瓮福达州化工有限责任公司 | The cleaning method of wet phosphoric acid purifying technique concentration systems |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101736349B (en) | 2012-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101736349B (en) | Pickling method and pickling device of low-temperature multi-effect sea water desalting equipment | |
| CN102094211B (en) | Acid washing system of low-temperature multi-effect seawater desalting equipment | |
| CN101614502B (en) | Cleaning method of low-temperature multiple-effect seawater desalination evaporator | |
| JP6395732B2 (en) | Composition and method for preventing corrosion in gas turbine air compressors | |
| CN105369262A (en) | Anti-scaling agent for natural gas heat exchanger and cleaning method | |
| CN108709341A (en) | A kind of pre- cold mould spray evaporation type condenser | |
| CN112815767B (en) | Cleaning method of seawater desalination device | |
| CN101008083B (en) | Preparation method of anticorrosion film of energy-saving type heater condenser | |
| CN201427997Y (en) | Acid washing device of low temperature multi-effect seawater desalination device | |
| CN105973061A (en) | Descaling method of condenser of power plant | |
| CN108645275A (en) | Low-temperature multiple-effect seawater desalination cleaning and descaling system and cleaning and descaling method | |
| JP5856134B2 (en) | Air conditioner and deep sea water utilization system | |
| CN201553782U (en) | Acid pickling system of low-temperature multipurpose sea water desalinization equipment | |
| CN203454917U (en) | Condenser cleaning system in turbine closed circulating water system | |
| CN101487119A (en) | Metal composite passivation process after boiler cleaning in heat power plant | |
| CN103433245B (en) | Method for cleaning condenser of turbine closed-type circulating water system | |
| Zaza et al. | The influence of the cooling system fouling on the thermal performance of a CSP plant: Recent research updated | |
| CN103438757B (en) | Condenser cleaning system and cleaning method in steam turbine closed type circulating water system | |
| CN201104023Y (en) | Descaling heat pump water heater | |
| Schwartz | Four types of heat exchanger failures | |
| CN220229637U (en) | Refrigeration system for preventing scaling outside condenser tube | |
| CN207849344U (en) | A kind of boiler blowdown water and steam water sampling water reclamation system | |
| CN219674263U (en) | Desulfurization slurry combined condensing system | |
| CN208883648U (en) | A kind of circulating-water in thermal power plant processing system | |
| CN206747197U (en) | A kind of interior flushing device of low temperature multi-effect seawater desalting system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |