CN105571383A - Dismounting-and-washing-free descaling method for dilute acid plate heat exchanger - Google Patents
Dismounting-and-washing-free descaling method for dilute acid plate heat exchanger Download PDFInfo
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- CN105571383A CN105571383A CN201610084646.1A CN201610084646A CN105571383A CN 105571383 A CN105571383 A CN 105571383A CN 201610084646 A CN201610084646 A CN 201610084646A CN 105571383 A CN105571383 A CN 105571383A
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- heat exchanger
- arm
- valve
- hot dilute
- fresh water
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a dismounting-and-washing-free descaling method for a dilute acid plate heat exchanger. The dilute acid plate heat exchanger is adjusted once after normally working for two months, specifically, a hot dilute sulphuric acid inlet and a cold circulating process water inlet of the dilute acid plate heat exchanger are exchanged, and meanwhile a hot dilute sulphuric acid outlet and a cold circulating process water outlet are exchanged, so that cold circulating process water is fed into a flow channel where hot dilute sulphuric acid is fed originally, and hot dilute sulphuric acid is fed into a flow channel where cold circulating process water is fed originally; and after the dilute acid plate heat exchanger works for four work hours after the exchange, the hot dilute sulphuric acid inlet and outlet and the cold circulating process water inlet and outlet are exchanged correspondingly to recover the original state. According to the method, operation is simple, consumed time is short, the heat exchange efficiency of the heat exchanger is ensured, and normal production is not influenced. According to the method, the link of dismounting and washing plates is omitted, damage to rubber sealing strips and the complex procedure for pasting the rubber strips again are avoided, corresponding material cost is omitted, labor input is reduced, and cessation of production is not needed. Compared with conventional methods, the method can prolong the service life of equipment by three to five years.
Description
Technical field
The present invention relates to a kind of diluted acid plate type heat exchanger to exempt to unpick and wash descaling method, belong to technical field of heat exchange.
Background technology
Diluted acid plate type heat exchanger is made up of some stainless steel plates with heaving of the sea liquid chute, has the dilute sulfuric acid of heat and cold the recycled process water two media runner respectively.Run when circulation does not throw in antisludging agent, because recirculated water hardness height plate type heat exchanger water side deposition speed is accelerated, affect heat transfer effect.For ensureing good heat transfer effect, regularly remove the incrustation scale of recirculated water side.
Conventional descaling method takes plate-type heat-exchange plate water under high pressure apart to carry out physics flushing.In physical cleaning process, need a large amount of manpower of input to carry out dismounting to plate, sealing joint strip has damage or departs from plate phenomenon when dismounting is cleaned, replacing damages adhesive tape and disengaging plate adhesive tape is pasted on plate again.Such descaling method causes the damage of human input, adhesive tape, glue drops into more, just can complete in the longer situation of stopping production, and repeated disassembled and assembled and flushing have damage to plate, reduce the service life of equipment.
Therefore, the descaling method seeking to exempt to unpick and wash is necessary.
Summary of the invention
The deficiencies such as reducing labour, avoiding the problems such as damage plate, the present invention discloses a kind of diluted acid plate type heat exchanger and exempts to unpick and wash descaling method, the service life of need to remove plate to overcome existing scale removal, reducing equipment.
The present invention is realized by following technical proposal: a kind of diluted acid plate type heat exchanger exempts to unpick and wash descaling method, through following operation: carry out following exchange once after diluted acid plate type heat exchanger normally works per bimester: the hot dilute sulfuric acid import of diluted acid plate type heat exchanger and the import of SAPMAC method fresh water (FW) are exchanged, hot dilute sulfuric acid outlet is exported with SAPMAC method fresh water (FW) simultaneously and exchange, the runner originally passing into hot dilute sulfuric acid is made to pass into SAPMAC method fresh water (FW), the runner originally passing into SAPMAC method fresh water (FW) is made to pass into hot dilute sulfuric acid, after so exchanging 4 man-hours of rear work, again hot dilute sulfuric acid import and export and SAPMAC method fresh water (FW) are imported and exported and exchange recovery former state.
Further, the input main pipeline of described hot dilute sulfuric acid arranges arm, supervisor and arm all arrange valve, and be responsible for and be connected with hot dilute sulfuric acid import, arm is connected with the import of SAPMAC method fresh water (FW), during normal work, close the valve on arm, open supervisor's valve, when needs are exchanged, close the valve on supervisor, open the valve on arm; In like manner, the input main pipeline of SAPMAC method fresh water (FW) arranges arm, supervisor and arm all arrange valve, and be responsible for and be connected with the import of SAPMAC method fresh water (FW), arm is connected with hot dilute sulfuric acid import, during normal work, close the valve on arm, open supervisor's valve, when needs are exchanged, close the valve on supervisor, open the valve on arm.
The present invention does the wash effect to incrustation scale under utilizing the long-term circular flow of diluted acid medium, by alternately changing sour side and the water side medium of plate type heat exchanger, can utilize circulation diluted acid that the incrustation scale in original water side panels is done the wash removing under normal production scenarios, without the need to taking the plate of plate type heat exchanger apart.
The advantage that the present invention possesses and effect: the present invention is simple to operate, consuming time short, guarantees the heat exchange efficiency of heat exchanger, does not affect normal production.The present invention is by periodically the import and export of (bimester of per) hot acid and water entrance are exchanged once, alternately change interior media, only need 4 man-hours, the object doing the wash the fouling of clear board face can be reached, eliminate and take plate apart and rinse link, avoid the damage of sealing joint strip and the complicated process of viscose top again, do not consume glue, remove the input of respective material expense from, reduce labour and drop into, solve the problem needing the stopping production long period could remove plate fouling simultaneously.Compare routine, can 3 ~ 5 years service life of extension device.
Accompanying drawing explanation
When Fig. 1 is for normally working, the sour side of diluted acid plate type heat exchanger and water side turnover schematic diagram;
When Fig. 2 is scale removal, the sour side of diluted acid plate type heat exchanger and water side turnover schematic diagram;
In figure, 1 is the SAPMAC method fresh water (FW) import of diluted acid plate type heat exchanger, and 2 is the SAPMAC method fresh water (FW) outlet of diluted acid plate type heat exchanger; 3 is the hot dilute sulfuric acid import of diluted acid plate type heat exchanger, and 4 is the hot dilute sulfuric acid outlet of diluted acid plate type heat exchanger.
Detailed description of the invention
Below in conjunction with accompanying drawing, the inventive method is further described.
Embodiment 1
Diluted acid plate type heat exchanger normally work (as Fig. 1) per bimester after carry out following exchange once: hot dilute sulfuric acid import 3 and the SAPMAC method fresh water (FW) import 1 of diluted acid plate type heat exchanger are exchanged, hot dilute sulfuric acid outlet 4 is exported 2 with SAPMAC method fresh water (FW) to exchange simultaneously, the runner originally passing into hot dilute sulfuric acid is made to pass into SAPMAC method fresh water (FW), the runner originally passing into SAPMAC method fresh water (FW) is made to pass into hot dilute sulfuric acid, after so exchanging 4 man-hours of rear work, hotter dilute sulfuric acid to be imported and exported and recovery former state is exchanged in the import and export of SAPMAC method fresh water (FW).
Further, each input channel does following branched pipe, to facilitate exchange: the input main pipeline of instant heating dilute sulfuric acid arranges arm, supervisor and arm all arrange valve, supervisor is connected with hot dilute sulfuric acid import, arm is connected with the import of SAPMAC method fresh water (FW), when normally working, closes the valve on arm, open supervisor's valve, when needs are exchanged, close the valve on supervisor, open the valve on arm; In like manner, the input main pipeline of SAPMAC method fresh water (FW) arranges arm, supervisor and arm all arrange valve, and be responsible for and be connected with the import of SAPMAC method fresh water (FW), arm is connected with hot dilute sulfuric acid import, during normal work, close the valve on arm, open supervisor's valve, when needs are exchanged, close the valve on supervisor, open the valve on arm.
Unpick and wash mode with routine, need take apart carry out physical cleaning once with water bimester of per to plate type heat exchanger, three are cleaned 18 times for 1 year altogether, clean needs 30 man-hours, each loss adhesive tape 40 at every turn, consume 8 barrels, glue at every turn.The bimester of adopting method of the present invention per, the hot acid of plate type heat exchanger is imported and exported, water entrance exchanges once, only need namely complete scale removal 4 man-hours, and there is not loss adhesive tape and consume glue.
Claims (2)
1. a diluted acid plate type heat exchanger exempts to unpick and wash descaling method, it is characterized in that through following operation: after diluted acid plate type heat exchanger normally works per bimester, carry out following exchange once: the hot dilute sulfuric acid import of diluted acid plate type heat exchanger and the import of SAPMAC method fresh water (FW) are exchanged, hot dilute sulfuric acid outlet is exported with SAPMAC method fresh water (FW) simultaneously and exchange, the runner originally passing into hot dilute sulfuric acid is made to pass into SAPMAC method fresh water (FW), the runner originally passing into SAPMAC method fresh water (FW) is made to pass into hot dilute sulfuric acid, after so exchanging 4 man-hours of rear work, again hot dilute sulfuric acid import and export and SAPMAC method fresh water (FW) are imported and exported and exchange recovery former state.
2. diluted acid plate type heat exchanger according to claim 1 exempts to unpick and wash descaling method, it is characterized in that: the input main pipeline of described hot dilute sulfuric acid arranges arm, supervisor and arm all arrange valve, and be responsible for and be connected with hot dilute sulfuric acid import, arm is connected with the import of SAPMAC method fresh water (FW), during normal work, close the valve on arm, open supervisor's valve, when needs are exchanged, close the valve on supervisor, open the valve on arm; In like manner, the input main pipeline of SAPMAC method fresh water (FW) arranges arm, supervisor and arm all arrange valve, and be responsible for and be connected with the import of SAPMAC method fresh water (FW), arm is connected with hot dilute sulfuric acid import, during normal work, close the valve on arm, open supervisor's valve, when needs are exchanged, close the valve on supervisor, open the valve on arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610084646.1A CN105571383A (en) | 2016-02-14 | 2016-02-14 | Dismounting-and-washing-free descaling method for dilute acid plate heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610084646.1A CN105571383A (en) | 2016-02-14 | 2016-02-14 | Dismounting-and-washing-free descaling method for dilute acid plate heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105571383A true CN105571383A (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610084646.1A Pending CN105571383A (en) | 2016-02-14 | 2016-02-14 | Dismounting-and-washing-free descaling method for dilute acid plate heat exchanger |
Country Status (1)
| Country | Link |
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| CN (1) | CN105571383A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0455694A (en) * | 1990-06-22 | 1992-02-24 | Daikin Ind Ltd | Method and device foe cleaning of heat exchanger for air conditioner |
| US20090188648A1 (en) * | 2008-01-29 | 2009-07-30 | Chien-Chung Tao | Heat Exchanger |
| CN202329402U (en) * | 2011-11-21 | 2012-07-11 | 友谊九鼎酵母有限公司 | Self-cleaning device for plate-type heat exchanger in yeast fermentation production |
| CN203037115U (en) * | 2013-02-01 | 2013-07-03 | 山东金拓热能科技有限公司 | Plate-type heat exchanger provided with on-line backwashing device |
| CN203116593U (en) * | 2012-09-13 | 2013-08-07 | 新疆星塔矿业有限公司 | Convenient, flexible and cleanable plate heat exchanger device |
| CN203163592U (en) * | 2012-09-13 | 2013-08-28 | 新疆星塔矿业有限公司 | Self-cleaning plate-type heat exchanger apparatus |
| CN203464844U (en) * | 2013-07-26 | 2014-03-05 | 招商局重工(深圳)有限公司 | Plate cooler having back washing function |
| CN204730736U (en) * | 2015-06-05 | 2015-10-28 | 德州实华化工有限公司 | A kind of flushing plate type heat exchanger |
-
2016
- 2016-02-14 CN CN201610084646.1A patent/CN105571383A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0455694A (en) * | 1990-06-22 | 1992-02-24 | Daikin Ind Ltd | Method and device foe cleaning of heat exchanger for air conditioner |
| US20090188648A1 (en) * | 2008-01-29 | 2009-07-30 | Chien-Chung Tao | Heat Exchanger |
| CN202329402U (en) * | 2011-11-21 | 2012-07-11 | 友谊九鼎酵母有限公司 | Self-cleaning device for plate-type heat exchanger in yeast fermentation production |
| CN203116593U (en) * | 2012-09-13 | 2013-08-07 | 新疆星塔矿业有限公司 | Convenient, flexible and cleanable plate heat exchanger device |
| CN203163592U (en) * | 2012-09-13 | 2013-08-28 | 新疆星塔矿业有限公司 | Self-cleaning plate-type heat exchanger apparatus |
| CN203037115U (en) * | 2013-02-01 | 2013-07-03 | 山东金拓热能科技有限公司 | Plate-type heat exchanger provided with on-line backwashing device |
| CN203464844U (en) * | 2013-07-26 | 2014-03-05 | 招商局重工(深圳)有限公司 | Plate cooler having back washing function |
| CN204730736U (en) * | 2015-06-05 | 2015-10-28 | 德州实华化工有限公司 | A kind of flushing plate type heat exchanger |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20160511 |