CN202037143U - Chemical cleaning and heating device - Google Patents
Chemical cleaning and heating device Download PDFInfo
- Publication number
- CN202037143U CN202037143U CN2011201287123U CN201120128712U CN202037143U CN 202037143 U CN202037143 U CN 202037143U CN 2011201287123 U CN2011201287123 U CN 2011201287123U CN 201120128712 U CN201120128712 U CN 201120128712U CN 202037143 U CN202037143 U CN 202037143U
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- China
- Prior art keywords
- cleaning
- chemical cleaning
- pipeline
- heating device
- centrifugal pump
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- Expired - Fee Related
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- Cleaning By Liquid Or Steam (AREA)
- Cleaning In General (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The utility model discloses a chemical cleaning and heating device which prevents a welding line of a cleaning tank from being corroded by alkali liquor so as to avoid caustic embrittlement. The chemical cleaning and heating device has the following structure: a chemical cleaning tank (1) is welded with a flat bottom slot valve (2) which is connected with a centrifugal pump (4) by a low-temperature liquid cleaning pipeline (3), the centrifugal pump (4) is connected with a single-sleeve preheater (5) by the low-temperature liquid cleaning pipeline (3), the single-sleeve preheater (5) is connected with a user by a high-temperature liquid cleaning pipeline (6), and the user is connected with the chemical cleaning tank (1) by a pipeline. In the chemical cleaning and heating device, a liquid cleaning tank heater is arranged on a discharge tube outside the cleaning tank, cleaning liquid is pumped into the single-sleeve preheater by the centrifugal pump, is heated to the temperature needed by the production through fresh steam, and then is conveyed to the position needed by the production of each user, and finally the cleaning liquid returning to the cleaning tank is cooled to be in the low-temperature state. For the chemical cleaning and heating device, the structure is simple, the use is convenient, the cost is saved, and the potential safety hazard in the production is reduced.
Description
Technical field
The utility model relates to a kind of be corroded Chemical cleaning heater of generation " caustic embrittlement " phenomenon of Chemical cleaning slot weld that prevents, belongs to alumina producer corrosion protection of equipment technical field.
Background technology
In alumina producer, the alkali lye storage tank is generally used the carbon steel material welding production, but because the characteristic of corrosion easily takes place in alkali lye the carbon steel welded seam, is easy to cause the caustic corrosion of carbon steel equipment to damage in the operation, most typical is exactly the stress corrosion cracking of carbon steel, promptly usually said " caustic embrittlement ".The corrosion rate of carbon steel in alkali lye is relevant with the pH value and the temperature of alkali lye, and the high more corrosion rate of pH value is fast more, and the high more corrosion rate of temperature is fast more.The stress corrosion cracking phenomenon more than 50 ℃, all may take place in the four corner of NaOH concentration more than 5% in temperature in carbon steel, and NaOH concentration is the most dangerous when 30% left and right sides.The chemical cleaning solution that alumina producer is laid in the Chemical cleaning groove need be heated usually to 105 ℃, changes clear groove inside the single-sleeve preheating device is set, and changes clear liquid concentration and is about 320g/L, and percent concentration is about 35%.Therefore, deposit alkali lye is easy to take place " caustic embrittlement " phenomenon with the Chemical cleaning slot weld, in case weld seam " caustic embrittlement " phenomenon takes place, the alkali lye storage tank produces and leaks, and will bring potential safety hazard to the aluminium oxide ordinary production.
Summary of the invention
The technical problems to be solved in the utility model is: a kind of Chemical cleaning heater is provided, is easy to take place deficiencies such as " caustic embrittlement " phenomenon to overcome the Chemical cleaning slot weld that prior art exists.
The utility model is to constitute like this: Chemical cleaning groove and the welding of flat-bottom slot valve, the flat-bottom slot valve is connected with centrifugal pump by low temperature clear liquid pipeline, centrifugal pump is connected with the single-sleeve preheating device by low temperature clear liquid pipeline, the single-sleeve preheating device is connected with the user by high temperature clear liquid pipeline, and the user is connected with the Chemical cleaning groove by pipeline.
Owing to adopted technique scheme, the utility model changed in the past and was changing the method that clear groove inside is provided with heater, to change the clear groove of clear being arranged on of tank heater outside, the change clear liquid of deposit in changing clear groove is the low temperature clear liquid, centrifugal pump is squeezed into the single-sleeve preheating device with the low temperature clear liquid, change clear liquid after changing the high temperature clear liquid after the Steam Heating into and being delivered to each production desired location via high temperature clear liquid pipeline, the change clear liquid of the clear groove of returning is reduced to the lower temperature state again, change clear liquid in the clear groove of making remains low-temperature condition always like this, can be heated to be the condition of high temperature and produce requiredization clear liquid.Both satisfied the production needs, reached the clear slot weld of preventing again by the purpose of alkali liquid corrosion.Therefore, compared with prior art, the utility model not only have can the clear slot weld of preventing by alkali liquid corrosion, i.e. " caustic embrittlement " phenomenon of stress corrosion cracking takes place, but also has advantages such as service life simple in structure, easy to use, that save potential safety hazard, the clear groove of prolongationization in cost, the minimizing production.
Description of drawings
Fig. 1 is the structural representation of the utility model device.
The specific embodiment
Embodiment of the present utility model: the structure of the utility model device is: Chemical cleaning groove 1 and 2 welding of flat-bottom slot valve, flat-bottom slot valve 2 is connected with centrifugal pump 4 by low temperature clear liquid pipeline 3, centrifugal pump 4 is connected with single-sleeve preheating device 5 by low temperature clear liquid pipeline 3, single-sleeve preheating device 5 is connected with the user by high temperature clear liquid pipeline 6, and the user is connected with Chemical cleaning groove 1 by pipeline.
During work, open flat-bottom slot valve 2 and emit the low temperature clear liquid of deposit in changing clear groove 1, enter centrifugal pump 4 by low temperature clear liquid pipeline 3, centrifugal pump 4 is squeezed into single-sleeve preheating device 5 with the low temperature clear liquid, the low temperature clear liquid is heated to about 105 ℃ by initial steam in single-sleeve preheating device 5, initial steam changes condensed water into after heating process discharges, by high temperature clear liquid pipeline 6 the thermalization clear liquid is delivered to each desired location of user, the temperature reduction was returned in the Chemical cleaning groove 1 again after the high temperature clear liquid was finished cleaning.
Claims (1)
1. Chemical cleaning heater, it is characterized in that: Chemical cleaning groove (1) and flat-bottom slot valve (2) welding, flat-bottom slot valve (2) is connected with centrifugal pump (4) by low temperature clear liquid pipeline (3), centrifugal pump (4) is connected with single-sleeve preheating device (5) by low temperature clear liquid pipeline (3), single-sleeve preheating device (5) is connected with the user by high temperature clear liquid pipeline (6), and the user is connected with Chemical cleaning groove (1) by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201287123U CN202037143U (en) | 2011-04-27 | 2011-04-27 | Chemical cleaning and heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201287123U CN202037143U (en) | 2011-04-27 | 2011-04-27 | Chemical cleaning and heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202037143U true CN202037143U (en) | 2011-11-16 |
Family
ID=44964609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201287123U Expired - Fee Related CN202037143U (en) | 2011-04-27 | 2011-04-27 | Chemical cleaning and heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202037143U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102688865A (en) * | 2012-06-17 | 2012-09-26 | 科威信（无锡）洗净科技有限公司 | Washing unit |
| CN102755974A (en) * | 2011-04-27 | 2012-10-31 | 贵阳铝镁设计研究院有限公司 | Chemical cleaning and heating device and heating method thereof |
| CN104438243A (en) * | 2014-11-12 | 2015-03-25 | 贵州大学 | Method for removing scars in inner pipes of one-pipe piping preheater |
-
2011
- 2011-04-27 CN CN2011201287123U patent/CN202037143U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102755974A (en) * | 2011-04-27 | 2012-10-31 | 贵阳铝镁设计研究院有限公司 | Chemical cleaning and heating device and heating method thereof |
| CN102688865A (en) * | 2012-06-17 | 2012-09-26 | 科威信（无锡）洗净科技有限公司 | Washing unit |
| CN104438243A (en) * | 2014-11-12 | 2015-03-25 | 贵州大学 | Method for removing scars in inner pipes of one-pipe piping preheater |
| CN104438243B (en) * | 2014-11-12 | 2016-08-31 | 贵州大学 | A kind of method for cleaning of single-sleeve preheating device inner tube scab |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20150427 |
|
| EXPY | Termination of patent right or utility model |