CN114481150A - On-line acid washing and pre-filming device and method for pipe-pass circulating water cooler - Google Patents
On-line acid washing and pre-filming device and method for pipe-pass circulating water cooler Download PDFInfo
- Publication number
- CN114481150A CN114481150A CN202111560837.8A CN202111560837A CN114481150A CN 114481150 A CN114481150 A CN 114481150A CN 202111560837 A CN202111560837 A CN 202111560837A CN 114481150 A CN114481150 A CN 114481150A
- Authority
- CN
- China
- Prior art keywords
- pickling
- line
- pipe
- valve
- water
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 304
- 238000005406 washing Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000002253 acid Substances 0.000 title claims description 20
- 238000005554 pickling Methods 0.000 claims abstract description 241
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000005086 pumping Methods 0.000 claims abstract description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims 1
- 238000005260 corrosion Methods 0.000 description 11
- 230000007797 corrosion Effects 0.000 description 11
- 238000011010 flushing procedure Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
Images
Classifications
-
- 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
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses an on-line pickling and pre-filming device of a pipe-pass circulating water cooler and a pickling and pre-filming method thereof, wherein a water inlet valve and a water outlet valve are closed, and a water inlet pipe auxiliary line valve, a water outlet pipe auxiliary line valve, a pickling line water inlet pipe connecting valve and a pickling line water outlet pipe connecting valve are opened; starting a pickling pump, pumping pickling solution out of a pickling tank by the pickling pump, sequentially passing through a water inlet connecting pipe and a water outlet pipe of a pickling line, then entering a cooler pipe pass, passing through a water inlet pipe, a water outlet connecting pipe of the pickling line and a pickling line, entering a pickling cooler for cooling, and then entering the pickling tank; when pickling is completed, a pickling pump, a pickling line water inlet joint pipe valve, a pickling line water outlet joint pipe valve, a water inlet pipe auxiliary line valve and a water outlet pipe auxiliary line valve are closed, a water inlet valve and a water outlet valve are opened, washing is carried out, washing water is discharged from a system through a water discharge pipe, and meanwhile pickling solution in a pickling tank is replaced by a pre-filming agent.
Description
Technical Field
The invention relates to an on-line acid washing and pre-filming device of a pipe-pass circulating water cooler and an acid washing and pre-filming method thereof, in particular to an on-line acid washing and pre-filming device of a pipe-pass circulating water cooler and an acid washing and pre-filming method thereof, belonging to the field of petrochemical industry.
Background
The circulating water cooler is widely applied to the field of petrochemical industry, and has the function of exchanging heat with process materials and taking away unnecessary heat, so that the process materials are reduced to proper temperature to meet production requirements.
When the tube pass circulating water cooler operates, rust-shaped corrosion products are attached to the inner surface of a circulating water cooler tube bundle due to incomplete cleaning and pre-filming or improper water quality control of a circulating water system. The rusty corrosion product is large in volume and hard in shell, but the rusty corrosion product is loose and porous in the shell, so that heat transfer can be influenced, the heat exchange efficiency of a cooler is reduced, under-scale corrosion can be generated on the other hand, finally, a circulating water cooler pipe bundle is corroded and perforated, the material leakage is caused, and the whole circulating water system is polluted.
The corrosion products are difficult to clean, and a large amount of corrosion products begin to dissolve when the pH value is less than 3. Therefore, strong acid pickling is needed to thoroughly clean the rust nodular corrosion products, but the whole circulating water system is subjected to online pickling, so that the risk is high, and the implementation difficulty is high; the production is affected by cutting the circulating water cooler out of the system for cleaning.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the on-line pickling and pre-filming device for the tube pass circulating water cooler, which has the technical characteristics of simple structure, convenience and quickness in operation, low cost, capability of efficiently solving the problem of tube bundle blockage caused by rusty corrosion products of the tube pass circulating water cooler and the like.
The invention also aims to provide an on-line pickling and pre-filming method of the pipe-line circulating water cooler.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the invention relates to an on-line acid-washing and pre-filming device of a pipe-pass circulating water cooler, which comprises a water cooler and a pipeline component, the water cooler and pipeline assembly comprises a cooler, the inlet end and the outlet end of the tube pass of the cooler are respectively connected with a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe are respectively connected with a water inlet valve and a water outlet valve, the water inlet pipe in front of the water inlet valve is connected with a water inlet pipe secondary line, the auxiliary line of the water inlet pipe is provided with an auxiliary line valve of the water inlet pipe, the water outlet pipe at the left end of the water outlet valve is provided with an auxiliary line of the water outlet pipe, the water outlet pipe secondary line is provided with a water outlet pipe secondary line valve, the water outlet pipe at the right end of the water outlet valve is provided with a pickling line water inlet connecting pipe, a pickling line water inlet connecting pipe valve is arranged on the pickling line water inlet connecting pipe, a pickling line water outlet connecting pipe is connected to a water inlet pipe at the right end of the water inlet valve, and a pickling line water outlet connecting pipe valve is arranged on the pickling line water outlet connecting pipe;
still include pickling and pre-filming system unit spare, pickling and pre-filming system unit spare include circulating water auxiliary line, pickling cooler, pickling line, pickling jar, the upper and lower end of circulating water auxiliary line is connected with outlet pipe auxiliary line, inlet tube auxiliary line respectively, the pickling line is connected with the pickling cooler to the upper and lower end of pickling line is connected with pickling jar, pickling line play water takeover respectively, the pickling jar is connected with pickling line intake takeover.
Preferably, inlet tube subline valve exit end is connected with the water pipe subline flange, outlet tube subline valve exit end is connected with the outlet tube subline flange, pickling line water outlet pipe connection valve exit end is connected with pickling line water outlet pipe connection flange, pickling line water inlet pipe connection valve exit end is connected with pickling line water inlet pipe connection flange, the circulating water subline both ends are equipped with circulating water subline front end flange and circulating water subline rear end flange respectively, circulating water subline front end flange and circulating water subline rear end flange detachable and water pipe subline flange, outlet tube subline flange joint respectively, the pickling line both ends are equipped with pickling line front end flange and pickling line rear end flange respectively, pickling line front end flange and pickling line rear end flange detachable respectively and pickling line water outlet pipe connection flange and pickling line water inlet pipe connection flange joint.
Preferably, the outlet end of the pickling tank is connected with a pickling pump, and the outlet end of the pickling pump is connected with a water inlet connecting pipe of a pickling line.
Preferably, a drain pipe is connected between the water outlet valve and the water inlet connecting pipe of the pickling line, and a drain valve is arranged on the drain pipe.
Preferably, the cooler is provided in plurality, and the plurality of coolers are connected in series.
Preferably, each valve is an electric valve, and the electric valves are all connected to one controller to realize intelligent control.
The invention relates to a method for on-line acid washing and pre-filming of a pipe-pass circulating water cooler, which comprises the following steps:
1) when the pickling line is in a normal working state, the water inlet valve and the water outlet valve are in an open state, and the water inlet pipe secondary line valve, the water outlet pipe secondary line valve, the pickling line water inlet pipe connecting valve, the pickling line water outlet pipe connecting valve and the drain valve are in a closed state; when the on-line pickling is carried out, firstly closing the water inlet valve and the water outlet valve, and opening the water inlet pipe secondary line valve, the water outlet pipe secondary line valve, the pickling line water inlet connecting pipe valve and the pickling line water outlet connecting pipe valve;
2) starting a pickling pump to start on-line pickling, pumping pickling solution out of a pickling tank by the pickling pump, sequentially passing through a pickling line water inlet connecting pipe and a pickling line water outlet pipe, then entering a cooler pipe pass, passing through a water inlet pipe, a pickling line water outlet connecting pipe and a pickling line, entering a pickling tank after entering a pickling cooler for cooling, and repeatedly and circularly finishing pickling;
3) when pickling is completed, closing a pickling pump, a pickling line water inlet joint pipe valve, a pickling line water outlet joint pipe valve, a water inlet pipe auxiliary line valve and a water outlet pipe auxiliary line valve in sequence, opening a water inlet valve and a water discharge valve, flushing, discharging flushing water out of the system through a water discharge pipe, and replacing pickling solution in a pickling tank with a pre-filming agent;
4) when the washing is finished, closing the water inlet valve and the water outlet valve, opening the water inlet pipe secondary line valve, the water outlet pipe secondary line valve, the pickling line water inlet joint pipe valve and the pickling line water outlet joint pipe valve, starting the pickling pump to start on-line pre-filming, at the moment, drawing the pre-filming agent out of the pickling tank by the pickling pump, sequentially passing through the pickling line water inlet joint pipe and the water outlet pipe, entering a cooler pipe pass, then passing through the water inlet pipe, the pickling line water outlet joint pipe and the pickling line, entering a pickling tank after entering a pickling cooler for cooling, and repeatedly and circularly finishing pre-filming;
5) when the pre-filming is finished, the pickling pump, the pickling line water inlet joint pipe valve, the pickling line water outlet joint pipe valve, the water inlet pipe auxiliary line valve and the water outlet pipe auxiliary line valve are closed in sequence, the water inlet valve and the water outlet valve are opened, and the normal working state is recovered.
Has the advantages that: the tube pass circulating water cooler and the pipeline assembly can realize online pickling of the tube pass circulating water cooler, thoroughly clean rusty corrosion products deposited on the inner surface of a tube bundle, solve the problems of low heat exchange efficiency and under-scale corrosion, realize online pre-filming, effectively improve the corrosion resistance of the tube bundle of the circulating water cooler, simultaneously avoid impact on the whole circulating water system and have wide application prospect.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Detailed Description
The present invention will be further described with reference to the drawings attached to the specification, but the present invention is not limited to the following examples.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or component must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the embodiment of the on-line pickling and pre-filming device for the pipe-pass circulating water cooler comprises a water cooler and a pipeline assembly, wherein the water cooler and the pipeline assembly comprise a cooler 5, the inlet end and the outlet end of the pipe pass of the cooler 5 are respectively connected with a water inlet pipe 1 and a water outlet pipe 2, the water inlet pipe 1 and the water outlet pipe 2 are respectively connected with a water inlet valve 3 and a water outlet valve 4, the water inlet pipe 1 in front of the water inlet valve 3 is connected with a water inlet auxiliary line 6, the water inlet pipe auxiliary line 6 is provided with a water inlet pipe auxiliary line valve 8, the water outlet pipe 2 at the left end of the water outlet valve 4 is provided with a water outlet auxiliary line 7, the water outlet pipe auxiliary line 7 is provided with a water outlet pipe auxiliary line valve 9, the water outlet pipe 2 at the right end of the water outlet valve 4 is provided with a pickling line water inlet pipe valve adapter 12, the pickling line water inlet pipe adapter 14 is provided with a pickling line water inlet adapter pipe 13, the water inlet pipe 1 at the right end of the water inlet valve 3 is connected with a pickling line outlet pipe 13, the pickling line water outlet connecting pipe 13 is provided with a pickling line water outlet connecting pipe valve 15; still include the pickling and pre-filming system subassembly, the pickling and pre-filming system subassembly include circulating water auxiliary line 20, pickling cooler 22, pickling line 24, pickling jar 26, the upper and lower end of circulating water auxiliary line 20 is connected with outlet pipe auxiliary line 7, inlet tube auxiliary line 6 respectively, pickling line 24 is connected with pickling cooler 22 to the upper and lower end of pickling line 24 is connected with pickling jar 26, pickling line outlet water takeover 13 respectively, pickling jar 26 is connected with pickling line inlet water takeover 12, and the material in the pickling jar 26 can be at any time through pickling line inlet water takeover 12 and send into 5 tube passes of cooler.
In a preferable embodiment mode, the outlet end of the inlet pipe secondary line valve 8 is connected with a water pipe secondary line flange 10, the outlet end of the outlet pipe secondary line valve 9 is connected with an outlet pipe secondary line flange 11, the outlet end of the pickling line outlet water pipe connection valve 15 is connected with a pickling line outlet water pipe connection flange 17, the outlet end of the pickling line inlet water pipe connection valve 14 is connected with a pickling line inlet water pipe connection flange 16, the two ends of the circulating water secondary line 20 are respectively provided with a circulating water secondary line front end flange 21 and a circulating water secondary line rear end flange 23, the circulating water secondary line front end flange 21 and the circulating water secondary line rear end flange 23 are respectively detachably connected with the water pipe secondary line flange 10 and the outlet pipe secondary line flange 11, the two ends of the pickling line 24 are respectively provided with a pickling line front end flange 25 and a pickling line rear end flange 28, the pickling line front end flange 25 and the pickling line rear end flange 28 are respectively detachably connected with the pickling line outlet water pipe connection flange 17 and the pickling line inlet water pipe connection flange 16, through the connection arrangement of a plurality of flanges, when on-line pickling is carried out, firstly, the pickling and pre-filming system assembly is transported to the site and assembled; secondly, connect pickling and pre-filming system subassembly and circulating water cooler and pipeline subassembly, the concrete mode is: the water inlet pipe secondary line flange 10, the circulating water secondary line front end flange 21, the water outlet pipe secondary line flange 11, the circulating water secondary line rear end flange 23, the pickling line water inlet connecting pipe flange 16, the pickling line rear end flange 28 and the pickling line water outlet connecting pipe flange 17 are connected with the pickling line front end flange 25, and the water inlet pipe secondary line flange, the circulating water secondary line front end flange and the pickling line rear end flange are simple and convenient to use.
In a preferred embodiment mode, the outlet end of the pickling tank 26 is connected with a pickling pump 27, the outlet end of the pickling pump 27 is connected with the water inlet connecting pipe 12 of the pickling line, and the pickling pump 27 is used for conveying to improve the working efficiency.
In a preferred embodiment mode, a drain pipe 18 is connected between the water outlet valve 4 and the water inlet connecting pipe 12 of the pickling line, and a drain valve 19 is arranged on the drain pipe to empty washing water.
In a preferred embodiment, the plurality of coolers 5 are connected in series and combined in multiple ways, and the plurality of coolers 5 are cleaned simultaneously, so that the structure is simple and the economic benefit is good.
In a preferred embodiment, each valve is an electric valve, and the electric valves are all connected to one controller to realize intelligent control. The pickling pump 27 can be automatically controlled by connecting with a controller.
The invention relates to a method for cleaning an on-line acid washing and pre-filming device of a pipe-pass circulating water cooler, which is characterized by comprising the following steps:
1) in a normal working state, the water inlet valve 3 and the water outlet valve 4 are in an open state, and the water inlet pipe secondary line valve 8, the water outlet pipe secondary line valve 9, the pickling line water inlet pipe connector valve 14, the pickling line water outlet pipe connector valve 15 and the drain valve 19 are in a closed state; when the on-line pickling is carried out, firstly closing the water inlet valve 3 and the water outlet valve 4, and opening the water inlet pipe secondary line valve 8, the water outlet pipe secondary line valve 9, the pickling line water inlet connecting pipe valve 14 and the pickling line water outlet connecting pipe valve 15;
2) starting the pickling pump 27, starting on-line pickling, pumping pickling solution out of the pickling tank 26 by the pickling pump 27, sequentially passing through the pickling line water inlet connecting pipe 12 and the pickling line water outlet pipe 2, entering the pipe pass of the cooler 5, then passing through the water inlet pipe 1, the pickling line water outlet connecting pipe 13 and the pickling line 24, entering the pickling cooler 22 for cooling, entering the pickling tank 26, and repeatedly circulating to complete pickling;
3) when pickling is completed, closing the pickling pump 27, the pickling line water inlet joint pipe valve 14, the pickling line water outlet joint pipe valve 15, the water inlet pipe auxiliary line valve 8 and the water outlet pipe auxiliary line valve 9 in sequence, opening the water inlet valve 3 and the water discharge valve 19, flushing, discharging the flushing water out of the system through the water discharge pipe 18, and simultaneously replacing the pickling solution in the pickling tank 26 with a pre-filming agent;
4) when the washing is finished, closing the water inlet valve 3 and the water outlet valve 19, opening the water inlet pipe secondary line valve 8, the water outlet pipe secondary line valve 9, the pickling line water inlet pipe connector 14 and the pickling line water outlet pipe connector 15, starting the pickling pump 27 to start on-line pre-filming, at the moment, the pickling pump 27 pumps the pre-filming agent out of the pickling tank 26, sequentially passes through the pickling line water inlet pipe connector 12 and the water outlet pipe 2, enters the pipe pass of the cooler 5, then enters the pickling tank 26 after entering the pickling cooler 22 through the water inlet pipe 1, the pickling line water outlet pipe connector 13 and the pickling line 24 for cooling, and repeatedly and circularly finishing pre-filming;
5) when the pre-filming is finished, the pickling pump 27, the pickling line water inlet connecting pipe valve 14, the pickling line water outlet connecting pipe valve 15, the water inlet pipe secondary line valve 8 and the water outlet pipe secondary line valve 9 are closed in sequence, the water inlet valve 3 and the water outlet valve 4 are opened, and the normal working state is recovered.
Finally, it should be noted that the present invention is not limited to the above embodiments, and many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
Claims (7)
1. The utility model provides an online pickling of pipe journey circulating water cooler and prefilming device, a serial communication port, including water cooler and pipeline subassembly, water cooler and pipeline subassembly include cooler (5), inlet tube (1), outlet pipe (2) are connected respectively to the entrance point, the exit end of cooler (5) pipe journey, be connected with water intaking valve (3), outlet valve (4) on inlet tube (1), the outlet pipe (2) respectively, be connected with inlet tube subline (6) on inlet tube (1) before water intaking valve (3), be equipped with inlet tube subline valve (8) on inlet tube subline (6), be equipped with outlet pipe subline (7) on outlet pipe (2) of outlet valve (4) left end, be equipped with outlet pipe subline valve (9) on outlet pipe subline (7), be equipped with pickling line water inlet pipe (12) on outlet pipe (2) of outlet valve (4) right-hand member, a pickling line water inlet connecting pipe valve (14) is arranged on the pickling line water inlet connecting pipe (12), a pickling line water outlet connecting pipe (13) is connected to the water inlet pipe (1) at the right end of the water inlet valve (3), and a pickling line water outlet connecting pipe valve (15) is arranged on the pickling line water outlet connecting pipe (13);
still include pickling and pre-filming system unit spare, pickling and pre-filming system unit spare include circulating water auxiliary line (20), pickling cooler (22), pickling line (24), pickling jar (26), the upper and lower end of circulating water auxiliary line (20) is connected with outlet pipe auxiliary line (7), inlet tube auxiliary line (6) respectively, pickling line (24) are connected with pickling cooler (22) to the upper and lower end of pickling line (24) is connected with pickling jar (26), pickling line outlet water takeover (13) respectively, pickling jar (26) are connected with pickling line inlet water takeover (12).
2. The on-line pickling and pre-filming device of pipe-pass circulating water cooler of claim 2, characterized in that, inlet pipe subline valve (8) exit end is connected with water pipe subline flange (10), outlet pipe subline valve (9) exit end is connected with outlet pipe subline flange (11), pickling line outlet water pipe connector (15) exit end is connected with pickling line outlet water pipe connector flange (17), pickling line inlet pipe connector (14) exit end is connected with pickling line inlet pipe connector flange (16), circulating water subline (20) both ends are equipped with circulating water subline front end flange (21) and circulating water subline rear end flange (23) respectively, circulating water subline front end flange (21) and circulating water subline rear end flange (23) detachable respectively and water pipe subline flange (10), outlet pipe subline flange (11) are connected, pickling line (24) both ends are equipped with pickling line front end flange (25) and pickling line rear end flange (a), (b) and (b) respectively 28) The front end flange (25) and the rear end flange (28) of the pickling line are respectively detachably connected with the water outlet pipe connecting flange (17) and the water inlet pipe connecting flange (16) of the pickling line.
3. The on-line pickling and pre-filming device of the pipe-pass circulating water cooler as claimed in claim 1 or 2, wherein the outlet end of the pickling tank (26) is connected with a pickling pump (27), and the outlet end of the pickling pump (27) is connected with the water inlet connecting pipe (12) of the pickling line.
4. The on-line pickling and pre-filming device of the pipe-line circulating water cooler as claimed in claim 1, wherein a drain pipe (18) is connected between the outlet valve (4) and the pickling line water inlet connecting pipe (12), and a drain valve (19) is arranged on the drain pipe.
5. The on-line pickling and pre-filming device of the pipe-line circulating water cooler according to claim 1, wherein a plurality of coolers (5) are provided, and the plurality of coolers (5) are connected in series.
6. The on-line pickling and pre-filming device of the pipe-line circulating water cooler as claimed in claim 1, 2, 4 or 5, wherein each valve is an electric valve, and the electric valves are connected to a controller to realize intelligent control.
7. A method for on-line acid cleaning and pre-filming of a pipe-pass circulating water cooler is characterized by comprising the following steps:
1) in a normal working state, the water inlet valve (3) and the water outlet valve (4) are in an open state, and the water inlet pipe auxiliary line valve (8), the water outlet pipe auxiliary line valve (9), the pickling line water inlet pipe joint valve (14), the pickling line water outlet pipe joint valve (15) and the drain valve (19) are in a closed state; when in on-line pickling, firstly closing the water inlet valve (3) and the water outlet valve (4), and opening the water inlet pipe auxiliary line valve (8), the water outlet pipe auxiliary line valve (9), the pickling line water inlet connecting pipe valve (14) and the pickling line water outlet connecting pipe valve (15);
2) starting an acid washing pump (27), starting on-line acid washing, pumping acid washing liquid out of an acid washing tank (26) by the acid washing pump (27), sequentially passing through an acid washing line water inlet connecting pipe (12) and a water outlet pipe (2), then entering a cooler (5) tube side, then entering an acid washing cooler (22) through a water inlet pipe (1), an acid washing line water outlet connecting pipe (13) and an acid washing line (24), cooling, then entering the acid washing tank (26), and repeatedly circulating to finish acid washing;
3) when pickling is completed, a pickling pump (27), a pickling line water inlet joint pipe valve (14), a pickling line water outlet joint pipe valve (15), a water inlet pipe auxiliary line valve (8) and a water outlet pipe auxiliary line valve (9) are closed in sequence, a water inlet valve (3) and a water outlet valve (19) are opened for washing, washing water is discharged out of the system through a water outlet pipe (18), and pickling solution in a pickling tank (26) is replaced by a pre-filming agent;
4) when the washing is finished, closing the water inlet valve (3) and the water outlet valve (19), opening the water inlet pipe secondary line valve (8), the water outlet pipe secondary line valve (9), the pickling line water inlet pipe connecting valve (14) and the pickling line water outlet pipe connecting valve (15), starting the pickling pump (27), starting on-line pre-filming, at the moment, drawing the pre-filming agent out of the pickling tank (26) by the pickling pump (27), sequentially passing through the pickling line water inlet connecting pipe (12) and the water outlet pipe (2), entering the pipe pass of the cooler (5), then entering the pickling tank (26) after entering the pickling cooler (22) for cooling through the water inlet pipe (1), the pickling line water outlet connecting pipe (13) and the pickling line (24), and repeatedly and circularly finishing pre-filming;
5) when the pre-filming is finished, the pickling pump (27), the pickling line water inlet connecting pipe valve (14), the pickling line water outlet connecting pipe valve (15), the water inlet pipe auxiliary line valve (8) and the water outlet pipe auxiliary line valve (9) are closed in sequence, the water inlet valve (3) and the water outlet valve (4) are opened, and the normal working state is recovered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111560837.8A CN114481150B (en) | 2021-12-20 | 2021-12-20 | Online pickling and prefilming device of tube side circulating water cooler and pickling and prefilming method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111560837.8A CN114481150B (en) | 2021-12-20 | 2021-12-20 | Online pickling and prefilming device of tube side circulating water cooler and pickling and prefilming method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114481150A true CN114481150A (en) | 2022-05-13 |
| CN114481150B CN114481150B (en) | 2024-02-09 |
Family
ID=81494899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111560837.8A Active CN114481150B (en) | 2021-12-20 | 2021-12-20 | Online pickling and prefilming device of tube side circulating water cooler and pickling and prefilming method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114481150B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011099143A (en) * | 2009-11-05 | 2011-05-19 | Ota Yoshio Machine Industry Co Ltd | Cleaning and film forming device, and cleaning and film forming method |
| CN204311137U (en) * | 2014-10-31 | 2015-05-06 | 天津中化洁安科技有限公司 | Cleaning and pre-film integration apparatus |
| CN208847016U (en) * | 2018-07-17 | 2019-05-10 | 中触媒华邦(东营)有限公司 | A kind of water cooler by-pass valve and back purge system |
-
2021
- 2021-12-20 CN CN202111560837.8A patent/CN114481150B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011099143A (en) * | 2009-11-05 | 2011-05-19 | Ota Yoshio Machine Industry Co Ltd | Cleaning and film forming device, and cleaning and film forming method |
| CN204311137U (en) * | 2014-10-31 | 2015-05-06 | 天津中化洁安科技有限公司 | Cleaning and pre-film integration apparatus |
| CN208847016U (en) * | 2018-07-17 | 2019-05-10 | 中触媒华邦(东营)有限公司 | A kind of water cooler by-pass valve and back purge system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114481150B (en) | 2024-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107297350A (en) | The leaf cleaning system of gas turbine blower | |
| CN205580291U (en) | Plate heat exchanger from belt cleaning device | |
| CN108489327A (en) | A kind of heat exchanger cleaning method | |
| CN102877081A (en) | Pre-pickling acid liquor circulation system and method for hot-rolled stainless steel strip steel | |
| CN207797872U (en) | Heat exchanger rinses incrustation scale device | |
| CN114850148A (en) | Online cleaning work system | |
| CN108943577B (en) | Mould water route cleaning device | |
| CN114481150A (en) | On-line acid washing and pre-filming device and method for pipe-pass circulating water cooler | |
| CN217716121U (en) | Self-cleaning shell-and-tube cooler system | |
| CN216864336U (en) | Online pickling of shell side circulating water cooler and prefilming device | |
| CN102788528B (en) | System for cleaning with rubber balls | |
| CN214173100U (en) | Online automatic back-flushing device of plate heat exchanger | |
| CN113446895A (en) | Mixed washing of printed circuit board formula heat exchanger and maintenance device | |
| CN207308429U (en) | The leaf cleaning system of gas turbine blower | |
| CN208104545U (en) | A kind of cleaning device of aluminium ring formula ion-exchanger | |
| CN219328367U (en) | Online recoil device of electroslag furnace heat exchanger | |
| CN205642135U (en) | Plate heat exchanger adds medicine backpurge system on line | |
| CN210512844U (en) | Plate heat exchanger pickling system | |
| CN218238473U (en) | Novel shell-and-tube heat exchange device | |
| CN216694645U (en) | Online back flushing device of pipe-pass circulating water cooler | |
| CN217738018U (en) | Shell-and-tube cooler online cleaning device | |
| CN217818344U (en) | On-line cleaning device for condenser of refrigerator | |
| KR20200002789U (en) | Washing device for plate heat exchanger | |
| CN215639031U (en) | Mixed washing of printed circuit board formula heat exchanger and maintenance device | |
| CN219756496U (en) | Corrosion and scale inhibition system for heating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |