CN1657860A - On-line three-phase fluidization cleaning technology for dirt on outer of pipe of vertical tubulation heat-transfer equipment - Google Patents
On-line three-phase fluidization cleaning technology for dirt on outer of pipe of vertical tubulation heat-transfer equipment Download PDFInfo
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- CN1657860A CN1657860A CN 200410022892 CN200410022892A CN1657860A CN 1657860 A CN1657860 A CN 1657860A CN 200410022892 CN200410022892 CN 200410022892 CN 200410022892 A CN200410022892 A CN 200410022892A CN 1657860 A CN1657860 A CN 1657860A
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- transfer equipment
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Abstract
The invention discloses a triple phase fluidization online clean technique for the outside dirt of the tubes of vertical heat transmitting device. Install an ageing resistant easy bending soft plastic cloth tube at the bottom of the shell while there are uniformly arranged gas ejecting hole on the cloth tube. The cleaning gas ejected with hasting the liquor in the shell uprising driving the solid particles strenuously move. With the auto circulating triple phase cleaning liquor, for releazing online, fast and uniform cleaning.
Description
Technical field
Patent of the present invention relates to the outer dirt three-phase fluidization on-line cleaning technology of a kind of vertical tubulation heat-transfer equipment pipe.This technology can be widely used in the periodicity on-line cleaning of the outer dirt of various tubulation heat-transfer equipment pipes.
Background technology
The present vertical tubulation heat-transfer equipment that uses, shell side liquid can't carry out the machinery cleaning after the fouling outside pipe in running.Almost can only adopt chemical cleaning method, but owing to structural reason, clean lack of homogeneity, effect is bad, and causes local corrosion easily.Therefore, manage outer dirt and can't in time remove, operational efficiency descends gradually, worsens, even partial occlusion, causes equipment to lose efficacy ahead of time and scraps, and has a strong impact on its service life.
Summary of the invention
Patent of the present invention is intended to solve the online Rapid Cleaning problem of the outer dirt of this vertical tubulation heat-transfer equipment pipe, proposes the outer dirt three-phase fluidization on-line cleaning technology of a kind of vertical tubulation heat-transfer equipment pipe.The characteristics of patent of the present invention are that vertical tubulation heat-transfer equipment can clean by the three-phase circulating fluidization, the outer dirt of property performance period, online, quick, even removing pipe, reach the purpose that keeps long-term efficient operation, and keep basic structure constant, installation cost under the same load increases hardly, and cleaning charge is very cheap.
The technical scheme of patent of the present invention is:
Manage the vertical tubulation structural thermal of outer dirt three-phase fluidization on-line cleaning type equipment, by heat-transfer pipe, formations such as keeper, gas-distribution pipe A, gas-distribution pipe B, gas distribution flexible pipe, wash particle, blast pipe, shell side liquid entrance, upper perforated plate, lower perforated plate, blowoff valve between housing, pipe.Nearly lower perforated plate place is assembled with many gas distribution flexible pipes, arranges a gas distribution flexible pipe every 3～5 row's heat-transfer pipes.The gas distribution flexible pipe that is communicated with gas-distribution pipe A, gas-distribution pipe B is alternately arranged.The gas distribution flexible pipe adopts ageing-resistant, easy diastrophic flexible plastic manufacturing.Offer pore on the gas distribution flexible pipe.Gas-distribution pipe can be arranged in the housing, also can be arranged on outside the housing.Substitute traditional baffle plate with keeper between pipe, design has blast pipe on the housing at nearly upper perforated plate place, and blowoff valve is in parallel with the shell side liquid-inlet.The solids that usefulness is cleaned in fluidization are housed in the housing.
When needing the outer dirt of scavenge pipe in the production run process, open wherein gas-distribution pipe A, blast pipe and blowoff valve, close the shell side outlet valve.The flexible plastic gas distribution flexible pipe adjacent domain that communicates with gas-distribution pipe A, under the drive of the purge gas that moves upward, shell side liquid is with a large amount of bubble fast rise, drive wash particle and form the three-phase fluidization cleaning fluid, the cleaning fluid motion reaches to liquid level, purge gas separates with shell side liquid, wash particle, discharges through blast pipe.Shell side liquid and wash particle descend by the gas distribution flexible pipe adjacent domain that is communicated with gas-distribution pipe B, realize circulating up and down in the shell side.The three-phase fluidization cleaning fluid is carried out cleaning in violent circulating up and down in the process to the tube outer surface dirt.After treating that the Fouling Cleaning of this zone heat-transfer pipe is basic clean, close gas-distribution pipe A, open another gas-distribution pipe B, the circular flow that changes the three-phase fluidization cleaning fluid to.So alternately the result who cleans had both solved unidirectional Fouling Cleaning uniformity that circulates and the imperfect problem of cleanliness factor, made the purgative gas scale of construction that needs in the unit interval to supply with reduce half again, reduced the capacity of equipment requirement of purge gas source.Because the flow regime of three-phase fluidization cleaning fluid is very violent, the speed of Fouling Cleaning is fast, and the time is short, good uniformity, not only the heat exchange efficiency in the cleaning process can not descend, can strengthen to some extent on the contrary.The structure of keeper can be rod baffle, also can be the structural member of other lower shape of sleeve pipe, cylindrical spring or other axial flow resistance between pipe.Substitute traditional baffle plate with keeper between pipe, not only created condition, and heat-transfer pipe vibrates can avoid cleaning again the time for the axial circulation up and down of cleaning fluid flows.Therefore, this heat-transfer equipment can be implemented in line and cleans, the efficient operation that support equipment is long-term.The shell side fluid pressure that purge gas need overcome is little, only needs the low pressure gas body source.The source of the gas of purge gas can adopt on-the-spot existing low pressure gas body source, small-sized trailing plants thatch blower fan air feed that also can the separate configurations movable type.
Description of drawings
Fig. 1 is the outer dirt three-phase fluidization on-line cleaning technical schematic diagram of vertical tubulation heat-transfer equipment pipe of the present invention.
Fig. 2 is the circumferential circulation three-phase fluidization on-line cleaning structure principle chart that the A-A among Fig. 1 analyses and observe amplification.
Keeper 5. lower perforated plates 6. blowoff valves 7. gas distribution flexible pipes 8. gas-distribution pipe A 9. gas-distribution pipe B 10. wash particles 11. shell side liquid outlet tubes 12. upper perforated plates 13. pores between 1. blast pipes, 2. housings, 3. heat-transfer pipes, 4. pipes among the figure
The concrete shell side liquid-inlet scheme of implementing
Specific embodiments below in conjunction with accompanying drawing 1 and accompanying drawing 2 these practical patents of invention of explanation:
When needing the outer dirt of scavenge pipe in the running, open wherein gas-distribution pipe A8, blast pipe 1, blowoff valve 6.The gas-liquid mixture of gas distribution flexible pipe 7 adjacent domains that communicate with gas-distribution pipe A8 rises and flows, after its flow velocity surpasses the sinking speed of wash particle 10, drive wash particle 10 and upwards flow, form the three-phase fluidization cleaning fluid of strenuous exercise, fast and effeciently clean the dirt outside the heat-transfer pipe 3.After cleaning fluid moved to liquid level, the purge gas of separating was discharged through blast pipe 1, and part of contaminated water is through blowoff valve 6 dischargings.Blowoff valve 6 is in parallel with the shell side liquid-inlet.10 of shell side liquid and wash particles flow downward by the gas distribution flexible pipe adjacent domain that communicates with gas-distribution pipe B9, carry out inner loop.Treat the outer Fouling Cleaning of this zone heat-transfer pipe 3 basic clean after, close gas-distribution pipe A8, open gas-distribution pipe B9, the circular flow that changes the three-phase fluidization washing fluid cleans to continuing.So alternately washing and cleaning operation both can improve the uniformity of cleaning, can reduce the purge gas requirement of unit interval again, reduced the tolerance requirement of purge gas supply arrangement.The concrete structure of keeper 4 can be rod baffle, also can be the structural member of other lower shape of sleeve pipe, cylindrical spring or other axial flow resistance between pipe.Substitute traditional baffle plates with keeper between pipe 4, not only created condition, and heat-transfer pipe vibrates can avoid cleaning again the time for the axial circulation up and down of cleaning fluid flows.Because the violent of three-phase fluidization cleaning fluid flows, not only cleaning speed is fast, even, economical, not only and because the heat exchange efficiency when cleaning can not descend, can be strengthened on the contrary, can also realize online, periodic purge, reaching can the long-term efficient purpose of moving of support equipment.
Gas distribution flexible pipe 7 is arranged and is fixed on nearly lower perforated plate 5 places.Because the gas distribution flexible pipe 7 that flexible plastic is made is very easy to crooked and distortion, therefore is convenient to the assembling between heat-transfer pipe 3, can not change the traditional structure that heat-transfer pipe 3 is arranged, make easyly, comparing with traditional structure increases manufacturing expense hardly.The gas distribution flexible pipe 7 that is communicated with gas-distribution pipe A8, gas-distribution pipe B9 must alternate intervals be arranged, so as when to clean the three-phase fluidization cleaning fluid form different directions in circulate.The diameter of the pore of offering on the gas distribution flexible pipe 7 13 is generally in 4mm～8mm scope, too little easy obstruction, and too conference causes that wash particle 10 pours in down a chimney and enters in the gas distribution flexible pipe 7.The jet velocity at pore 13 places is in the 10m/s-40m/s scope.The quantity of pore 13 is calculated decision by the amount and the jet velocity of purge gas.Pore 13 on the gas distribution flexible pipe 7 is equidistant substantially evenly arranges.Gas distribution flexible pipe 7 adopts ageing-resistant engineering plastics manufacturing.The tolerance that cleaning needs and the sinking speed of wash particle 10 are closely related, approximate direct ratio.For example, when being 0.25m/s for the sinking speed of wash particle 10, test shows that the purge gas requirement of calculating by area between pipe is per hour 55～75 cubic meters of every square meter.
The shell side fluid pressure that purge gas need overcome is little, and the purge gas of supply can utilize on-the-spot existing low pressure gas body source, perhaps the small-sized trailing plants thatch blower fan air feed of separate configurations movable type.Therefore, auxiliary equipment is taken very low.
The gross area of blast pipe 1 is determined by exhaust velocity and purge gas calculation of total.Exhaust velocity is not taken shell side liquid basically out of with discharge gas and is as the criterion, generally in 25m/s～35m/s scope.If shell side liquid can adopt higher exhaust velocity during for cooling water.
Wash particle 10 can be plastic pellet, glass marble, porcelain ball, river sand, selects to determine according to character and the material of heat-transfer pipe 3 and the difficulty or ease of Fouling Cleaning etc. of shell side liquid.
Claims (6)
1. the outer dirt three-phase fluidization on-line cleaning technology of vertical tubulation heat-transfer equipment pipe, by housing (2), heat-transfer pipe (3), keeper between pipe (4), gas-distribution pipe A (8), gas-distribution pipe B (9), gas distribution flexible pipe (7), wash particle (10), blowoff valve (6), blast pipe (1), shell side liquid outlet tube (11), upper perforated plate (12), lower perforated plate (5), the heat-transfer equipment that blow-off pipe (6) etc. constitute, it is characterized in that nearly lower perforated plate (5) locates to be assembled with many gas distribution flexible pipes (7), offer pore (13) on the gas distribution flexible pipe (7), between 3～5 rows' heat-transfer pipe (2), arrange a gas distribution flexible pipe (7), with gas-distribution pipe A (8), the gas distribution flexible pipe (7) that gas-distribution pipe B (9) is communicated with is alternately arranged.
2. the outer dirt three-phase fluidization on-line cleaning technology of vertical tubulation heat-transfer equipment pipe according to claim 1 is characterized in that gas distribution flexible pipe (7) adopts ageing-resistant, easy diastrophic flexible plastic manufacturing.
3. the outer dirt three-phase fluidization on-line cleaning technology of vertical tubulation heat-transfer equipment pipe according to claim 1, the baffle plate that it is characterized in that keeper (4) replace traditional structural between the pipe of heat-transfer pipe (3), concrete structure can be rod baffle, also can be the structural member of other lower shape of sleeve pipe, cylindrical spring or other axial flow resistance.
4. the outer dirt three-phase fluidization on-line cleaning technology of vertical tubulation heat-transfer equipment pipe according to claim 1 is characterized in that wash particle (11) can be river sand, porcelain ball, glass marble, baton round, plastic pellet.
5. the outer dirt three-phase fluidization on-line cleaning technology of vertical tubulation heat-transfer equipment pipe according to claim 1 is characterized in that nearly upper perforated plate (12) locates design blast pipe (1) is arranged, and the radical of blast pipe (1) is 1～6.
6. the outer dirt three-phase fluidization on-line cleaning technology of vertical tubulation heat-transfer equipment pipe according to claim 1 is characterized in that gas-distribution pipe A (8) and gas-distribution pipe B (9) can be arranged in the housing (1), also can be arranged on outside the housing (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410022892 CN1657860B (en) | 2004-02-16 | 2004-02-16 | Vertical tubulation heat-transfer equipment with on-line fluidization cleaning function for dirt on outer of pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410022892 CN1657860B (en) | 2004-02-16 | 2004-02-16 | Vertical tubulation heat-transfer equipment with on-line fluidization cleaning function for dirt on outer of pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1657860A true CN1657860A (en) | 2005-08-24 |
| CN1657860B CN1657860B (en) | 2010-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410022892 Expired - Fee Related CN1657860B (en) | 2004-02-16 | 2004-02-16 | Vertical tubulation heat-transfer equipment with on-line fluidization cleaning function for dirt on outer of pipe |
Country Status (1)
| Country | Link |
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| CN (1) | CN1657860B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927837A (en) * | 2012-11-02 | 2013-02-13 | 镇海石化建安工程有限公司 | Heat exchanger structure |
| CN104279914A (en) * | 2013-07-09 | 2015-01-14 | 中国石油化工股份有限公司 | Online decoking device and decoking method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4300625A (en) * | 1975-01-21 | 1981-11-17 | Mikhailov Gerold M | Preventing deposition on the inner surfaces of heat exchange apparatus |
| DE3213988A1 (en) * | 1982-04-16 | 1983-10-20 | L. & C. Steinmüller GmbH, 5270 Gummersbach | METHOD FOR CLEANING GAS FLOWED HEAT EXCHANGERS |
| NL192055C (en) * | 1983-07-22 | 1997-01-07 | Eskla Bv | Device for operating physical and / or chemical processes, in particular a heat exchanger with circulation of granular mass. |
| US5006304A (en) * | 1988-04-19 | 1991-04-09 | Westinghouse Electric Corp. | Pressure pulse cleaning method |
| CN2164008Y (en) * | 1993-03-10 | 1994-05-04 | 湘潭大学 | Horizontal finned tube heat exchanger |
| CN1098736C (en) * | 1996-06-25 | 2003-01-15 | 球技术能源有限公司 | Cleaning system for cleaning fluid-conveying pipeline |
| JP3706505B2 (en) * | 1999-06-17 | 2005-10-12 | 三菱重工業株式会社 | Heat exchanger and method for removing scale in heat exchange pipe |
| CN2674392Y (en) * | 2004-02-16 | 2005-01-26 | 株洲工学院帅科机械清洗研究所 | Outer pipe dirt three-phase fluidizing on-line cleaning type vertical tubulation heat transfer equipment |
-
2004
- 2004-02-16 CN CN 200410022892 patent/CN1657860B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927837A (en) * | 2012-11-02 | 2013-02-13 | 镇海石化建安工程有限公司 | Heat exchanger structure |
| WO2014067223A1 (en) * | 2012-11-02 | 2014-05-08 | 镇海石化建安工程有限公司 | Heat exchanger structure |
| CN104279914A (en) * | 2013-07-09 | 2015-01-14 | 中国石油化工股份有限公司 | Online decoking device and decoking method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1657860B (en) | 2010-05-12 |
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Granted publication date: 20100512 Termination date: 20110216 |