CN100419368C - On-line cleaning technique for forward and reverse rubber balls of cold exchanger - Google Patents

On-line cleaning technique for forward and reverse rubber balls of cold exchanger Download PDF

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Publication number
CN100419368C
CN100419368C CNB200510200252XA CN200510200252A CN100419368C CN 100419368 C CN100419368 C CN 100419368C CN B200510200252X A CNB200510200252X A CN B200510200252XA CN 200510200252 A CN200510200252 A CN 200510200252A CN 100419368 C CN100419368 C CN 100419368C
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glueballs
valve
overcoat
cold
gateway
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Expired - Fee Related
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CNB200510200252XA
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CN1667343A (en
Inventor
刘东宁
刘大恒
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岳阳长天科技有限公司
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Abstract

The present invention relates to an on-line cleaning method for cold exchangers, particularly to an on-line cleaning technique for forward and reverse rubber balls of a cold exchanger. A rubber ball cleaning device as a purpose-made special device and switch valves of the present invention are arranged in a by pass of a cold exchanger system composed of a unit set and a single unit or more units to make a rubber ball on-line cleaning system with circulating water which can forward and reverse flow is formed between a tube side of the cold exchanger and the rubber ball cleaning device. An elastic rubber ball is installed in the rubber ball cleaning device, and the direction of inlet water stream can be changed by rotating a hand lever of the cleaning device; the rubber ball carries out forward and reverse circulating cleaning for the cold exchanger under the action of the water stream, and dirt in a pipe is exhausted outside the system through a drainage pipe. The present invention overcomes the defects of a traditional chemical or mechanical cleaning method which puts stable water and scale inhibitors into a circulating water system during parking and directly saves a large amount of recirculated cooling water and cost for equipment maintenance. The present invention can be widely suitable for oil refining, chemical engineering, electric force, textile, paper manufacturing, etc. industries which use cold exchanging equipment.

Description

On-line cleaning technique for forward and reverse rubber balls of cold exchanger
Technical field
The present invention relates to the on-line cleaning method of cold parallel operation, refer in particular to on-line cleaning technique for forward and reverse rubber balls of cold exchanger.
Background technology
In the production process of practicing industries such as oil, chemical industry, thermoelectricity, papermaking, the scale problems of cold parallel operation is the emphasis difficult problem of these industry equipment controles of puzzlement and maintenance always, particularly under the situation of present claimed apparatus long-term operation, it is more outstanding that problem seems, the direct harm that it causes is: the equipment heat transfer efficiency is seriously descended, equipment capacity reduces, and then influences the steady production of device; 2. the dirt layer increases the resistance of fluid, and the conveying equipment energy consumption is risen; 3. cause the equipment underdeposit corrosion, shorten the service life of equipment; Can cause equipment to stop up when 4. fouling is serious, even can cause stop work and production.At present, the scale removal of oil refining, the cold parallel operation of chemical industry is adopted with cleaning is main: throw in water stabilization and antisludging agent in circulation; When device is stopped work, carry out that chemistry or machinery clean etc.All there is bigger problem in above method in present use.Stop work to clean, can not solve in the equipment running process because fouling causes heat transfer efficiency descends, equipment capacity reduces, energy consumption rises and problem such as underdeposit corrosion, has a strong impact on the service cycle of equipment, and the recondition expense height.Circulation is thrown in water stabilization and antisludging agent, because circulation is bigger, water system is owing to leakage, all kinds of impurity are more, and the medicament delivery effect is generally undesirable.
Summary of the invention
The objective of the invention is to be improved, a kind of on-line cleaning technique for forward and reverse rubber balls in the bypass of cold parallel operation system is provided at shortcoming that exists in the background technology and problem.
The technical scheme that realizes the object of the invention is: special special equipment sponge ball cleaner and each transfer valve are arranged in the bypass by the cold parallel operation system of separate unit, single group or many group combinations, make form one between the tube side of sponge ball cleaner and cold parallel operation can forward and reverse mobile recirculated water glueballs on-line cleaning system, the elasticity glueballs is housed in the sponge ball cleaner, can change the direction of water inlet current by rotation washer handle, glueballs carries out forward and reverse wash cycles to cold parallel operation under the effect of current, dirt is outside blow-off pipe is discharged to system in the pipe.Principle of the present invention is to switch and glueballs retractable playing skill art is carried out organic the combination the glueballs descalling technique of maturation and special cold parallel operation current are directed, the glueballs on-line cleaning system that develops a kind of rubber ball of cold-exchanger on-line cleaning equipment and match with it, utilized the circulation hydraulic power, can need not to increase power like this and put and receive ball equipment, just can realize the forward and reverse on-line cleaning of rubber ball of cold-exchanger.
The present invention has following advantage:
1, this glueballs cleaning technique has made full use of the circulation hydraulic power, need not to increase power and put the ball equipment of receiving, realize the rubber ball of cold-exchanger on-line auto-cleaning, this cleaning technique is reasonable in design, easy to operate, be convenient to field conduct, each scavenging period is about 20 minutes, cleaning charge is low, and cleaning performance is good.
2, because cold parallel operation is realized the glueballs on-line auto-cleaning, operating personnel can carry out the timing scale removal according to the fouling situation of cold parallel operation, general 4-5/, can change the existing hard scale mode that removes into soft dirt cleaning, make cold parallel operation in the process of operation, remain at the initial heat exchange state that cleans, solved the gas medium condensation efficiency that causes owing to the condenser fouling and descended, overhead gas pressure raises, and then influences degradation problem under the output of the safety in production of device and product and the quality.Improved the cycle of operation of equipment greatly.Can with the cold exchange device time between overhauls(TBO) from present 1-2/time bring up to 5-6/time, the recondition expense of saving equipment greatly.
3, this cleaning technique can be accomplished " multi-use ", can change the position and system carries out the supporting design of purging system by emphasis is cold, has reduced the investment cost of single device greatly, has improved the utilization rate of purging system.
4, clean initial heat exchange state because cold parallel operation remains in the process of operation, improved the utilization rate of the heat transfer efficiency and the recirculated water of equipment greatly, more than 80%, can save recirculated cooling water more than 15% by normal device average of the whole year descaling rate.
Description of drawings
Fig. 1 is a system flow chart of the present invention
Fig. 2 is a sponge ball cleaner installation diagram of the present invention
The specific embodiment
As shown in Figure 1, the present invention is arranged on special special equipment sponge ball cleaner (8) and each transfer valve in the bypass of cold parallel operation (9) system that is made up by separate unit, single group or many groups, make form one between the tube side of sponge ball cleaner (8) and cold parallel operation (9) can forward and reverse mobile recirculated water glueballs on-line cleaning system, sponge ball cleaner is equipped with the elasticity glueballs in (8), can change the direction of water inlet current by rotation washer handle (11), glueballs carries out forward and reverse wash cycles to cold parallel operation (9) under the effect of current, dirt is outside blow-off pipe is discharged to system in the pipe.
Each transfer valve of the present invention comprises main line valve (1,2), side line valve (3,4,5), blowoff valve (6), side line valve (3) one terminates on cold parallel operation tube side bottom inlet and the pipeline that main line valve (1) is connected, the other end is connected on the upper interface pipeline of the left storehouse of sponge ball cleaner (8), side line valve (4) one terminates on the pipeline between cold parallel operation tube side top exit and the main line valve (2), the other end is connected on the upper interface pipeline of the right storehouse of sponge ball cleaner (8), side line valve (5) one terminates on the cooling water water inlet main line, the other end is connected on sponge ball cleaner (8) the centre entrance pipeline, and blowoff valve (6) is connected on the bottom mouthpiece line end of sponge ball cleaner (8).
On-line cleaning technical matters step of the present invention is as follows:
Prepare before a, the cleaning: open washer storehouse, a left side or You Cang Cang Gai, glueballs is dropped in the washer, close the lid;
B, cleaning beginning: open side line valve (5), close main line valve (1,2), open side line valve (3,4);
C, cleaning: open blowoff valve (6), current enter storehouse, a washer left side, and during cleaning, glueballs forms forward and cleans under flow action; Cooling water is through side line 5# valve, enter storehouse, a washer left side, glueballs under flow action through side line 3# valve, enter tube side from cold parallel operation tube side bottom inlet, dirt to tube side cleans, subsequently, glueballs with current from cold parallel operation tube side push pipe exit through side line 4# valve, enter the right storehouse of washer, sewage is discharged from sewage draining exit; After cleaning certain hour, the washer handle rotates 90 degree, and current oppositely enter the right storehouse of washer, and opposite with last program process, glueballs forms under flow action oppositely and cleans; Glueballs returns left storehouse; Forward and reverse like this wash cycles repeatedly, till sewage draining exit goes out clear water;
D, return to normal production: shut off valve (6), shut off valve (3,4), shut off valve (5) is opened valve (1,2), and cold parallel operation returns to normal production.
The reference configuration of special special equipment of the present invention is as follows:
As shown in Figure 2, design a kind of cylindrical shape washer, by handle (11), overcoat (12), interior cover (13), left side filter ruffle (14), right filter ruffle (15), observation window (16), axle (17) and bearing (18) constitute, interior cover (13) is contained in the inboard of overcoat (12), the left filter ruffle (14) and the right filter ruffle (15) that have filter opening are contained on the correspondence position of interior cover (13) left and right sides, overcoat (12) is provided with the glueballs gateway, the gateway is provided with observation window (16), the axle (17) at interior cover (13) two ends is contained in respectively on the bearing (18) at overcoat (12) two ends, and axle (17) and interior cover (13) constitute a rotary body.
The overcoat of washer of the present invention (12) has a, b, c, d, five interfaces of e, can be respectively imports and exports pipeline with cold parallel operation to be cleaned and system thereof and is connected, and there is end cap at overcoat (12) two ends, and end cap is equipped with corresponding bearing (18) respectively.
The left and right sides in of the present invention in cover (13) cylindrical shell is provided with the interior storehouse of mutual isolation, have eight holes on the cylindrical shell, the position of position of opening and (12) five interfaces of overcoat adapts, in addition, interior the sealed at both ends of (13) of overlapping, the center, two ends is equipped with fixed axis (17a, 17b) respectively.
Left filter ruffle of the present invention (14) and right filter ruffle (15) are respectively equipped with receives ball mouth and ball-putting hole, and b, the c interface position of two mouthfuls position and interior cover (13) adapt, and its two centers arcuate distance is 90 degree.Have equally distributed filter opening on left side filter ruffle (14) and right filter ruffle (15) wall, filter opening diameter and percent opening can be selected arbitrarily as required.
The b of overcoat of the present invention (12), c glueballs gateway are connected with b, the c glueballs gateway in two storehouses about interior cover (13) respectively, its two centers arcuate distance is 90 degree, when turning 90 degrees to guarantee to revolve, overcoat glueballs gateway and glueballs gateway, storehouse, the interior cover left and right sides match.
In addition, handle of the present invention (11) is connected by axle with interior cover (13), cover rotation together in driving, and the outer cover of interior cover (13) (12) bearings at both ends supports to be and relatively rotates, and along with the drive of handle (11), interior cover revolves and turn 90 degrees, and can reach the purpose of commutation.
Application example:
Installed and used sponge ball cleaner on certain refinery gas separation unit E4103/E, F.The heat exchanger diameter is 900mm, 4 tube sides.In order to check implementation result, the cooler operation has been carried out after three months once cleaning, and table one is a data table related before and after the glueballs on-line cleaning, as can be seen from Table I:
1) cleaning the back quantity of circulating water slightly increases, and illustrate that glueballs does not have clogging, and runner is more unobstructed.
2) the heat exchanger operation has been carried out after 3 months cleaning test for the first time, and overall heat-transfer coefficient improves 16.4% before and after cleaning.
3) the washer execute-in-place switches freely, and is convenient and practical, and about 20 fens kinds of scavenging period, cleaning performance can obviously be observed the cleaning process of draining by clear water → Heisui River → yellow mud water → clear water from sewage draining exit.
Table one test data and result of calculation
Test event E4103/E、F
Before the cleaning:
Flow, t/h 145.5
The circulating water intake temperature, ℃ 31.3
The circulating water outlet temperature, ℃ 40.3
Medium inlet temperature in the pipe, ℃ 46.7
Media outlet temperature in the pipe, ℃ 34.5
Log-mean temperature difference, ℃ 4.62
Heat transfer area, m 2 480
Overall heat-transfer coefficient, kcal/m 2℃h 591
Clean the back:
Flow, t/h 153.6
The circulating water intake temperature, ℃ 30.8
The circulating water outlet temperature, ℃ 40.5
Medium inlet temperature in the pipe, ℃ 46.8
Media outlet temperature in the pipe, ℃ 33.9
Log-mean temperature difference, ℃ 4.51
Heat transfer area, m 2 480
Overall heat-transfer coefficient, kcal/m 2℃h 688
Clean forward and backward overall heat-transfer coefficient rate of change, % 16.4
Water-saving amount, t/h (t/) (153.6×9.7-145.5×9)/9=20(160000)
The scope of application of the present invention:
Classify by technology: be applicable to that mainly medium is cooler, the condenser of the various series of cooling water in the pipe.
By textural classification: mainly be applicable to shell-and-tube heat exchanger: floating head type, fixed tube sheet type series heat exchanger.
Adopt this cleaning technique in oil refining, chemical plant installations in the overhead condenser system, effect is more remarkable.Can exempt the gas medium condensation efficiency that causes owing to the condenser fouling in the production process and descend, overhead gas pressure raises, and then influences problems such as the output of the safety in production of device and product and quality.Chemistry or machinery that the present invention has adopted when having overcome traditional parking clean, circulation is thrown in the deficiency of water stabilization and antisludging agent method, realize the efficient operation of long period for the cold parallel operation of petrochemical plant technical assurance is provided, directly for the user saves a large amount of recirculated cooling waters and maintenance of equipment expense, can be widely used in refining oil, the industry of use cold exchange devices such as chemical industry, electric power, weaving, papermaking.

Claims (1)

1. forward and reverse rubber balls of cold exchanger on-line cleaning device is characterized in that:
---special special equipment sponge ball cleaner (8) and each transfer valve are arranged on by separate unit, in the bypass of cold parallel operation (9) system of single group or many group combinations, make form one between the tube side of special special equipment sponge ball cleaner (8) and cold parallel operation (9) can forward and reverse mobile recirculated water glueballs on-line cleaning system, in the described special special equipment sponge ball cleaner (8) the elasticity glueballs is housed, by rotating the direction of special special equipment sponge ball cleaner handle (11) change water inlet current, make the elasticity glueballs carry out forward and reverse wash cycles to cold parallel operation (9) under the effect of current, dirt is outside blow-off pipe is discharged to system in the pipe;
---described each transfer valve comprises the first main line valve (1), the second main line valve (2), the first side line valve (3), the second side line valve (4), the 3rd side line valve (5), blowoff valve (6); Wherein, the described first side line valve (3) terminates on cold parallel operation tube side bottom inlet and the pipeline that the first main line valve (1) is connected, and the other end is connected on the upper interface pipeline of the left storehouse of special special equipment sponge ball cleaner (8); The described second side line valve (4) terminates on the pipeline between the cold parallel operation tube side top exit and the second main line valve (2), and the other end is connected on the upper interface pipeline of the right storehouse of described special special equipment sponge ball cleaner (8); The inlet of the described first main line valve (1) connects cooling water water inlet main line, and described the 3rd side line valve (5) terminates on this cooling water water inlet main line, and the other end is connected on the suction line at described special special equipment sponge ball cleaner (8) middle part; Described blowoff valve (6) is connected on described special special equipment sponge ball cleaner (8) bottom mouthpiece line end, and the interior dirt of pipe is discharged to outside the system through the blow-off pipe of blowoff valve outlet; The outlet of the described second main line valve (2) connects cooling water water outlet main line, between the connecting line of the bottom interface of this cooling water water outlet main line and special special equipment sponge ball cleaner (8) and blowoff valve, be provided with a connecting line, this connecting line is provided with a valve (7);
---described special special equipment sponge ball cleaner is a kind of cylindrical shape washer, constituted by handle (11), overcoat (12), interior cover (13), left filter ruffle (14), right filter ruffle (15), observation window (16), axle (17) and bearing (18), cover (13) is contained in the inboard of overcoat (12) in described, described left filter ruffle (14) and right filter ruffle (15) are contained on the correspondence position of interior cover (13) left and right sides, all have equally distributed filter opening on both walls, filter opening diameter and percent opening are selected arbitrarily as required; Described overcoat (12) is provided with elasticity glueballs gateway, and this elasticity glueballs gateway is provided with observation window (16); Cover (13) is sealed at both ends in described, and the center, two ends is equipped with described axle (17) respectively; Described overcoat (12) two ends are respectively equipped with end cap, and two end cap is equipped with respectively and described axle corresponding bearing (18); The axle (17) at cover two ends is contained in respectively on the bearing (18) at described overcoat two ends in described, and described axle (17) and interior cover (13) constitute a rotary body; Described overcoat (12) has a, b, c, d, five interfaces of e, imports and exports pipeline with cold parallel operation to be cleaned and system thereof respectively and is connected; The left and right sides in described in cover (13) cylindrical shell is provided with the interior storehouse of mutual isolation, has eight holes on the inner sleeve body, and the position of a, the b of position of opening and overcoat (12), c, d, five interfaces of e adapts; Described left filter ruffle (14) and right filter ruffle (15) are respectively equipped with receives ball mouth and ball-putting hole, the center arcuate distance of described receipts ball mouth and ball-putting hole is 90 degree, and b, the c glueballs gateway in the interior storehouse of the left and right sides of the position of described receipts ball mouth and ball-putting hole and interior cover (13) cylindrical shell adapt; The b of described overcoat (12), c interface are as the glueballs gateway, b, the c glueballs gateway in storehouse are connected with b, the c glueballs gateway of overcoat (12) respectively in the left and right sides in described in cover (13) cylindrical shell, the center arcuate distance of the b of described overcoat (12), c glueballs gateway is 90 degree, to guarantee that handle revolves when turning 90 degrees, the b in two storehouses, c glueballs gateway match about described overcoat b, c glueballs gateway and interior cover; Described handle (11) is connected by described axle (17) with interior cover (13), drive the rotation together of interior cover by axle, described interior cover (13) leans on the bearings at described overcoat (12) two ends to be and relatively rotates, along with the drive of handle (11), interior cover revolves and turn 90 degrees, and promptly reaches the purpose of commutation.
CNB200510200252XA 2005-04-15 2005-04-15 On-line cleaning technique for forward and reverse rubber balls of cold exchanger Expired - Fee Related CN100419368C (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102564214A (en) * 2012-03-12 2012-07-11 北京建筑工程学院 Decontamination system for wastewater heat exchanger
CN104197775A (en) * 2014-09-16 2014-12-10 兰州天兴石油化工技术有限公司 On-line cleaning device for heat exchange equipment

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103350384A (en) * 2013-05-31 2013-10-16 南京群力运动器材有限公司 Operating process of middle tire grinding machine

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CN2170809Y (en) * 1993-02-26 1994-07-06 刘东宁 Cold exchanging equipment dirt-removing rubber ball on-line cleaning reversing apparatus
CN2300079Y (en) * 1997-03-07 1998-12-09 刘东宁 On-line cleaner for rubber ball of cold-exchanger

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102564214A (en) * 2012-03-12 2012-07-11 北京建筑工程学院 Decontamination system for wastewater heat exchanger
CN102564214B (en) * 2012-03-12 2013-10-16 北京建筑工程学院 Decontamination system for wastewater heat exchanger
CN104197775A (en) * 2014-09-16 2014-12-10 兰州天兴石油化工技术有限公司 On-line cleaning device for heat exchange equipment
CN104197775B (en) * 2014-09-16 2016-04-06 兰州天兴石油化工技术有限公司 Heat transmission equipment on-line cleaning device

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