CN108195223A - A kind of offline pickling descaling system of heat exchanger and technique - Google Patents
A kind of offline pickling descaling system of heat exchanger and technique Download PDFInfo
- Publication number
- CN108195223A CN108195223A CN201810269784.6A CN201810269784A CN108195223A CN 108195223 A CN108195223 A CN 108195223A CN 201810269784 A CN201810269784 A CN 201810269784A CN 108195223 A CN108195223 A CN 108195223A
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- level
- valve
- liquid
- fluid reservoir
- pipeline
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- 238000005554 pickling Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 125
- 239000012530 fluid Substances 0.000 claims abstract description 73
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000002699 waste material Substances 0.000 claims abstract description 28
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000001802 infusion Methods 0.000 claims abstract description 7
- 238000011010 flushing procedure Methods 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims description 9
- 239000000523 sample Substances 0.000 claims description 9
- 230000007797 corrosion Effects 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 claims description 8
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid Chemical group NS(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 claims description 5
- 239000012459 cleaning agent Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 abstract description 8
- 238000003756 stirring Methods 0.000 abstract 3
- 238000011156 evaluation Methods 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 235000021110 pickles Nutrition 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- F28G15/00—Details
- F28G15/003—Control arrangements
-
- 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
- F28G15/00—Details
- F28G2015/006—Arrangements for processing a cleaning fluid after use, e.g. filtering and recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
A kind of offline pickling descaling system of heat exchanger and technique, the offline pickling descaling system of heat exchanger include level-one fluid reservoir, two level fluid reservoir, stirring motor, acid cycle pump, upper liquid pump, ultrasonic level gage, solenoid valve and accessory filtration devices and pipe-line system and form.Level-one fluid reservoir is mainly used to carry out the dissolving of solid sulfamic acid and the storage of solution.In the top of level-one fluid reservoir equipped with ultrasonic level gage and stirring motor, two level fluid reservoir is squeezed by the upper liquid pump of level-one liquid storage pot bottom after the completion of acid solution stirring.Ultrasonic level gage is equipped with above two level fluid reservoir, which is used for the cycle of acid solution.If the PH evaluations of heat exchanger exit are more than setting value, discarded acid solution is discharged into waste liquid pool automatically, if acid solution can be continuing with, returns in two level fluid reservoir, is continuing with.After acidity, it is rinsed using clear water heat exchanging device.The offline pickling descaling system of heat exchanger and process cycles pickling, fluid infusion, discharge waste liquid, the automatic progress of clear water flushing, high degree of automation substantially reduce labor intensity.
Description
Technical field
The present invention relates to be related to exchange heat clear device cleaning system more particularly to a kind of offline pickling descaling system of heat exchanger and work
Skill.
Background technology
Heat exchanger is widely used in a variety of industries, is using water as thermophore mostly.Certain salts in water are increased in temperature
And concentration it is higher when will be precipitated from water, be attached to heat exchange pipe surface, form incrustation scale, lead to that heat transfer effect is poor, line clogging
Even tube wall is damaged.
The common descaling method of heat exchanger has Physical and chemical method.Physical is to utilize mechanics, acoustics, optics, electricity,
The principle of calorifics, by the effect of extraneous energy, such as mechanical friction, ultrasonic wave, negative pressure, impacting with high pressure, ultraviolet light, steam are gone
Except body surface dirt.Chemical method is by the effect of chemical reaction, utilizes chemicals or other solvent cleaning body surfaces
Dirt, such as with the incrustation scale of various inorganic or organic acid removal body surface.
Invention content
The purpose of the present invention is to provide a kind of offline pickling descaling system of heat exchanger and techniques, are combined using pickle slow
The fouling for losing agent heat exchanging device carries out offline automatic cleaning.
For achieving the above object, technical scheme of the present invention is specific as follows：
A kind of offline pickling descaling system of heat exchanger, including level-one fluid reservoir, two level fluid reservoir and waste liquid pool, level-one liquid storage
Equipped with blender and first liquid level gauge on tank, level-one fluid reservoir is connected with clear water pipeline by the first pipeline and passes through the second pipeline
It is connected with two level fluid reservoir, the first valve on the first pipeline is housed, the second valve and upper liquid pump are housed on the second pipeline.
Equipped with second liquid level gauge on two level fluid reservoir, two level fluid reservoir passes through upper liquid pipeline and liquid back pipe road and heat exchanger
Both ends are connected, and the liquid conveying direction in upper liquid pipeline upper edge in liquid pipeline is sequentially arranged with circulating pump and third valve, liquid back pipe
Road is sequentially arranged with the 4th valve along the liquid conveying direction in liquid back pipe road and PH is counted.
Waste liquid pool is connected by third pipeline and the first threeway with liquid back pipe road, and the 5th valve is equipped on third pipeline,
First threeway is located between PH meters and two level fluid reservoir, and the 6th valve is also equipped between the first threeway and two level fluid reservoir.
Clear water pipeline is connected by the 4th pipeline and the second threeway with upper liquid pipeline, and the 7th valve is housed on the 4th pipeline,
Second threeway is also equipped with the 8th valve between third valve and circulating pump between the second threeway and circulating pump.
Further, further include controller, the first to the 8th valve, blender, upper liquid pump, circulating pump, first liquid level gauge,
Second liquid level gauge, PH meters are connected with controller, and controller is counted according to PH, the probe value control valve of liquid level gauge and pump act.
Further, controller PLC, the first to the 8th valve are solenoid valve.
Further, first liquid level gauge and second liquid level gauge are ultrasonic level gage.
Further, the first filter device, the second filter device and third filter device are further included, wherein, the first filtering
Device is on the second pipeline, and the second filter device is on the upper liquid pipeline between circulating pump and two level fluid reservoir, third mistake
Device is filtered mounted in liquid back pipe road.
A kind of offline pickling descaling technique of heat exchanger uses the offline pickling descaling system of above-mentioned heat exchanger to implement, specifically
Include the following steps：
S1：Heat exchanger and original system are disconnected and drain the water in heat exchanger；
S2：Acidic cleaner is added in level-one fluid reservoir, the first valve is opened, amount of water is controlled by first liquid level gauge；
S3：The first valve is closed, starts blender, blender is closed when acidic cleaner is completely soluble；
S4：Liquid pump in startup controls two level fluid reservoir liquid volume added by second liquid level gauge；When second liquid level gauge detects two
Grade fluid reservoir water level closes upper liquid pump when reaching first predetermined value；When two level fluid reservoir water level is less than second predetermined value, open
Upper liquid pump carries out fluid infusion to two level fluid reservoir until two level fluid reservoir water level reaches first predetermined value；
S5：The 5th valve and the 7th valve is kept to close, opens third valve, the 4th valve, the 6th valve and the 8th valve
Door starts circulating pump heat exchanging device and is cleaned；When the probe value of PH meters reaches third predetermined value, the 6th valve is closed, is beaten
Open the 5th valve, the waste liquid in liquid back pipe road flows into waste liquid pool, after waste liquid all flows into waste liquid pool, closes the 5th valve and opens the
Six valves；
S6：Second liquid level gauge detects that two level fluid reservoir water level is less than second predetermined value, and liquid pump is to two level liquid storage in unlatching
Tank carries out fluid infusion；
S7：Step S1 to S6 is repeated, until the probe value of PH meters is identical with the pH value of the cleaning solution in level-one fluid reservoir；
S8：The 6th valve and the 8th valve are closed, the 7th valve and the 5th valve is opened, uses the clear water pair of clear water pipeline
Heat exchanger is rinsed, and flushing liquor flows into waste liquid pool through liquid back pipe road；When the probe value of PH meters is identical with clear water, the 7th is closed
Valve and the 5th valve, scale removal finish, and heat exchanger is taken back original system.
Further, cleaning agent is sulfamic acid and corrosion inhibiter.
Further, the proportioning of sulfamic acid and corrosion inhibiter and water is to delay per cubic meter of water with 50kg sulfamic acids and 3kg
Lose agent.
Further, third predetermined value 1.19.
Compared with prior art, beneficial effects of the present invention：
1st, acid solution is prepared automatically：Water, agitating function are automatically performed in level-one fluid reservoir, forms normal concentration acid solution；
2nd, automatic cyclic cleaning：Two level fluid reservoir is come back to after the filtered device filtering of cleaning solution come out by heat exchanger
Inside it is repeatedly circulated；
3rd, automatic liquid-feeding：Controller discharges waste liquid and automatic liquid-feeding according to the pH value of cleaning solution；
4th, auto-flushing：After pickling, pickling raffinate can be squeezed into waste liquid pool automatically and be changed using clear water flushing by system
Hot device
5th, it using sulfamic acid, cleans up, to application on human skin fanout free region, the damage of heat exchanging device pipe is small；
6th, high degree of automation, it is remote controlled.
Description of the drawings
Fig. 1 is a kind of structure diagram of the offline pickling descaling system of heat exchanger during the present invention is implemented；
In Fig. 1,1- level-one fluid reservoirs；2- two level fluid reservoirs；3- waste liquid pools；4- heat exchangers；5- clear water pipelines；6- liquid back pipes
Road；The upper liquid pipelines of 7-；The first solenoid valves of 8-；The first ultrasonic level gages of 9-；10- second solenoid valves；The second supersonic liquid levels of 11-
Meter；12- third solenoid valves；The 4th solenoid valves of 13-；The 5th solenoid valves of 14-；The 6th solenoid valves of 15-；The 7th solenoid valves of 16-；17-
8th solenoid valve；18-PH is counted；The first filter devices of 19-；The second filter devices of 20-；21- third filter devices；22- the one or three
It is logical；The second threeways of 23-；24- blenders；The upper liquid pumps of 25-；26- circulating pumps.
Specific embodiment：
The present invention is described further with reference to the accompanying drawings.
Embodiment
As shown in Figure 1, a kind of offline pickling descaling system of heat exchanger, including level-one fluid reservoir 1, two level fluid reservoir 2 and gives up
Liquid pool 3 is equipped with 24 and first ultrasonic level gage 9 of blender on level-one fluid reservoir 1.Level-one fluid reservoir 1 by the first pipeline with
Clear water pipeline 5 is connected and passes through the second pipeline and is connected with two level fluid reservoir 2, equipped with the first solenoid valve 8, the second pipe on the first pipeline
Road is equipped with second solenoid valve 10 and upper liquid pump 25.
Pass through upper liquid pipeline 7 and liquid back pipe equipped with the second ultrasonic level gage 11, two level fluid reservoir 2 on two level fluid reservoir 2
Road 6 is connected with the both ends of heat exchanger 4.Its interior liquid conveying direction of upper 7 upper edge of liquid pipeline is sequentially arranged with circulating pump 26 and third electricity
Magnet valve 12, its interior liquid conveying direction of 6 upper edge of liquid back pipe road are sequentially arranged with the 4th solenoid valve 13 and PH meters 18.
Waste liquid pool 3 is connected by third pipeline and the first threeway 22 with liquid back pipe road 6, and the 5th electricity is equipped on third pipeline
Magnet valve 14, the first threeway 22 are located between PH meters 18 and two level fluid reservoir 2, also pacify between the first threeway 22 and two level fluid reservoir 2
Equipped with the 6th solenoid valve 15.
Clear water pipeline 6 is connected by the 4th pipeline and the second threeway 23 with upper liquid pipeline 7, equipped with the 7th electricity on the 4th pipeline
Magnet valve 16, the second threeway 23 also fill between third solenoid valve 12 and circulating pump 26 between second threeway 23 and circulating pump 26
There is the 8th solenoid valve 17.
First to the 8th solenoid valve (8,10,12,13,14,15,16,17), blender 24, upper liquid pump 25, circulating pump 26,
First ultrasonic level gage 9, the second ultrasonic level gage 11, PH meters 18 are connected with PLC, and PLC is according to PH meters 18, ultrasonic solution
The detection duty control solenoid valve (8,10,12,13,14,15,16,17) of position meter (9,11) and pump (25,26) action.
Filter device can be additionally loaded onto on pipeline to be filtered the dirt washed out, wherein, the first filter device
19 on the second pipeline, and the second filter device 20 is mounted on the upper liquid pipeline 7 between circulating pump 26 and two level fluid reservoir 2, the
Three filter devices 21 are on liquid back pipe road 6.
When needing scale removal, following steps are carried out successively：
S1：Heat exchanger 4 and original system are disconnected and drain the water in heat exchanger；
S2：Sulfamic acid and corrosion inhibiter are added in level-one fluid reservoir 1, wherein, sulfamic acid and the proportioning of corrosion inhibiter and water
It is that every cubic meter of water matches 50kg sulfamic acids and 3kg corrosion inhibiter, opens the first solenoid valve 8, visited by the first ultrasonic level gage 9
Survey liquid level.
S3：The first solenoid valve 8 is closed when liquid level reaches predetermined value, starts blender 24, when sulfamic acid and corrosion inhibiter
Blender 24 is closed after completely soluble, the solution concentration in level-one fluid reservoir 1 is 5% at this time, and corresponding pH value is 0.63.
S4：The cleaning solution in level-one fluid reservoir 1 is added in two level fluid reservoir 2 by liquid pump 25 in startup, and passes through the second ultrasound
Wave liquid level gauge 11 controls 2 liquid volume added of two level fluid reservoir；When second liquid level gauge 11 detects that 2 water level of two level fluid reservoir reaches first in advance
Upper liquid pump 25 is closed during definite value；When 2 water level of two level fluid reservoir is less than second predetermined value, reopens liquid pump 25 and two level is stored up
Flow container 2 carries out fluid infusion until the water level of two level fluid reservoir 2 comes back to first predetermined value.
S5：The 5th solenoid valve 14 and the 7th solenoid valve 16 is kept to close, open third solenoid valve 12, the 4th solenoid valve 13,
6th solenoid valve 15 and the 8th solenoid valve 17 start 26 heat exchanging device 4 of circulating pump and are cleaned；When the probe value of PH meters 18 reaches
When 1.19, acid strength 1% illustrates that sulfamic acid has exhausted.The 6th solenoid valve 15 is closed, opens the 5th solenoid valve 14,
Waste liquid in liquid back pipe road 6 flows into waste liquid pool 3, after waste liquid all flows into waste liquid pool 3, closes the 5th solenoid valve 14 and opens the 6th electricity
Magnet valve 15.
S6：Second ultrasonic level gage 11 detects 2 water level of two level fluid reservoir less than second predetermined value, liquid pump 25 in unlatching
Fluid infusion is carried out to two level fluid reservoir 2.
S7：Step S1 to S6 is repeated, until after the probe value of PH meters 18 is 0.63, stops wash cycles.
S8：The 6th solenoid valve 15 and the 8th solenoid valve 17 are closed, opens the 7th solenoid valve 16 and the 5th solenoid valve 14, is used
The clear water heat exchanging device 4 of clear water pipeline 5 is rinsed, and flushing liquor flows into waste liquid pool 4 through liquid back pipe road 6；When the detection of PH meters 18
When value is identical with clear water, closes the 7th solenoid valve 16 and the 5th solenoid valve 14, scale removal finish, heat exchanger 4 is taken back into original system.
For the waste liquid in waste liquid pool 3, calcium base particle such as lime stone, white lime, quick lime can be added in into waste liquid pool 3
Impartial and bleaching liquid, until achromaticity and clarification can direct emission.
Claims (9)
1. a kind of offline pickling descaling system of heat exchanger, which is characterized in that including level-one fluid reservoir, two level fluid reservoir and waste liquid
Pond is connected simultaneously equipped with blender and first liquid level gauge, level-one fluid reservoir by the first pipeline with clear water pipeline on level-one fluid reservoir
Be connected by the second pipeline with two level fluid reservoir, equipped with the first valve on the first pipeline, on the second pipeline equipped with the second valve and
Upper liquid pump；
Pass through upper liquid pipeline and liquid back pipe road and the both ends of heat exchanger equipped with second liquid level gauge, two level fluid reservoir on two level fluid reservoir
It is connected, the liquid conveying direction in upper liquid pipeline upper edge in liquid pipeline is sequentially arranged with circulating pump and third valve, liquid back pipe road
The 4th valve and PH meters are sequentially arranged with along the liquid conveying direction in liquid back pipe road；
Waste liquid pool is connected by third pipeline and the first threeway with liquid back pipe road, is equipped with the 5th valve on third pipeline, and first
Threeway is located between PH meters and two level fluid reservoir, and the 6th valve is also equipped between the first threeway and two level fluid reservoir；
Clear water pipeline is connected by the 4th pipeline and the second threeway with upper liquid pipeline, equipped with the 7th valve on the 4th pipeline, second
Threeway is also equipped with the 8th valve between third valve and circulating pump between the second threeway and circulating pump.
2. a kind of offline pickling descaling system of heat exchanger as described in claim 1, which is characterized in that further include controller, institute
State the first to the 8th valve, blender, upper liquid pump, circulating pump, first liquid level gauge, second liquid level gauge and PH meter with controller phase
Even.
3. a kind of offline pickling descaling system of heat exchanger as claimed in claim 2, which is characterized in that the controller is PLC,
Described first to the 8th valve is solenoid valve.
4. a kind of offline pickling descaling system of heat exchanger as claimed in claim 2, which is characterized in that the first liquid level gauge and
Second liquid level gauge is ultrasonic level gage.
5. a kind of offline pickling descaling system of heat exchanger as described in claim 1, which is characterized in that further include the first filtering dress
It puts, the second filter device and third filter device, wherein, the first filter device is on second pipeline, the second filtering dress
It puts on the upper liquid pipeline between the circulating pump and the two level fluid reservoir, third filter device is mounted in the liquid back pipe road
On.
6. a kind of offline pickling descaling technique of heat exchanger, which is characterized in that using any heat exchangers of claim 1-5 from
Line pickling descaling system is implemented, and specifically includes following steps：
S1：Heat exchanger and original system are disconnected and drain the water in heat exchanger；
S2：Cleaning agent is added in level-one fluid reservoir, the first valve is opened, amount of water is controlled by first liquid level gauge；
S3：The first valve is closed, starts blender, blender is closed when cleaning agent is completely soluble；
S4：Liquid pump in startup controls two level fluid reservoir liquid volume added by second liquid level gauge；When second liquid level gauge detects that two level is stored up
Flow container water level closes upper liquid pump when reaching first predetermined value；When two level fluid reservoir water level is less than second predetermined value, upper liquid is opened
Pump carries out fluid infusion to two level fluid reservoir until two level fluid reservoir water level reaches first predetermined value；
S5：The 5th valve and the 7th valve is kept to close, third valve, the 4th valve, the 6th valve and the 8th valve is opened, opens
Dynamic circulating pump heat exchanging device is cleaned；When the probe value of PH meters reaches third predetermined value, the 6th valve is closed, opens the 5th
Valve, the waste liquid in liquid back pipe road flows into waste liquid pool, after waste liquid all flows into waste liquid pool, closes the 5th valve and opens the 6th valve
Door；
S6：Second liquid level gauge detects two level fluid reservoir water level less than second predetermined value, in unlatching liquid pump to two level fluid reservoir into
Row fluid infusion；
S7：Step S1 to S6 is repeated, until the probe value of PH meters is identical with the pH value of the cleaning solution in level-one fluid reservoir；
S8：The 6th valve and the 8th valve are closed, the 7th valve and the 5th valve is opened, uses the clear water heat exchanging of clear water pipeline
Device is rinsed, and flushing liquor flows into waste liquid pool through liquid back pipe road；When the probe value of PH meters is identical with clear water pH value, the 7th is closed
Valve and the 5th valve, scale removal finish.
7. a kind of offline pickling descaling technique of heat exchanger as claimed in claim 6, which is characterized in that the cleaning agent is amino
Sulfonic acid and corrosion inhibiter.
8. a kind of offline pickling descaling technique of heat exchanger as claimed in claim 7, which is characterized in that the sulfamic acid eases up
The proportioning for losing agent and water is to match 50kg sulfamic acids and 3kg corrosion inhibiter per cubic meter of water.
9. a kind of offline pickling descaling technique of heat exchanger as claimed in claim 6, it is characterised in that the third predetermined value is
1.19。
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| CN201810269784.6A CN108195223A (en) | 2018-03-29 | 2018-03-29 | A kind of offline pickling descaling system of heat exchanger and technique |
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| CN201810269784.6A CN108195223A (en) | 2018-03-29 | 2018-03-29 | A kind of offline pickling descaling system of heat exchanger and technique |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109019780A (en) * | 2018-07-27 | 2018-12-18 | 中国船舶重工集团公司第七〇九研究所 | In a kind of pickling and cleaning device |
| CN109827462A (en) * | 2019-04-12 | 2019-05-31 | 秦皇岛华电测控设备有限公司 | A kind of cleaning device and its cleaning process of heat exchange equipment |
| 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 |
| CN110227398A (en) * | 2019-07-15 | 2019-09-13 | 新锦龙生物基材料（湖北）有限公司 | A kind of method and device of reaction kettle heating coil scale removal |
| CN110542345A (en) * | 2019-09-10 | 2019-12-06 | 浙江石油化工有限公司 | cleaning device and cleaning method for acetaldehyde scaling heat exchanger |
| CN117732818A (en) * | 2024-02-20 | 2024-03-22 | 威海市正威机械设备股份有限公司 | System and method for cleaning reaction vessel |
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Application publication date: 20180622 |