CN202304499U - Reaction heat absorbing and recovering device for low temperature level in sulfuric acid production - Google Patents
Reaction heat absorbing and recovering device for low temperature level in sulfuric acid production Download PDFInfo
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- CN202304499U CN202304499U CN2011203746218U CN201120374621U CN202304499U CN 202304499 U CN202304499 U CN 202304499U CN 2011203746218 U CN2011203746218 U CN 2011203746218U CN 201120374621 U CN201120374621 U CN 201120374621U CN 202304499 U CN202304499 U CN 202304499U
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- convergent
- pipe
- divergent
- recovering device
- heat exchange
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model provides a reaction heat absorbing and recovering device for a low temperature level in sulfuric acid production, the reaction heat absorbing and recovering device is characterized in that: the recovering device is a kettle type evaporator of U-shaped heat exchange pipes, convergent-divergent pipes are adopted for the U-shaped heat exchange pipes, the pipelines of the convergent-divergent pipes are disposed to be in a U-shaped reciprocating arrangement in the evaporator. The structure shape of each U-shaped heat exchange pipe is a convergent-divergent pipe type XDS alloy steel pipe, in the pitch of each convergent-divergent pipe, the ratio of the length of a pipe diverging segment to the length of a pipe converging segment is 1 to 4. The reaction heat absorbing and recovering device is advantageous in that, the structure of the heat exchange pipes is changed to improve heat exchange efficiency, thereby reducing heat exchange area, reducing cost, reducing damage rate in production process, and guaranteeing operating ratio of the recovering device.
Description
Technical field
The utility model be in the gas washing in SA production to a kind of device in the absorption reaction heat recovery system of low potential temperature, particularly be disclosed in this device with the transfer of heat of the high-temperature concentrated sulfuric acid heat transmission equipment in the water.
Background technology
Sulfuric acid industry develops so far, and its production technology, production technology are ripe and perfect.Sulphuric acid process is to be oxidized to sulfur dioxide from elemental sulfur, is oxidized to sulfur trioxide again, and being absorbed by water then becomes sulfuric acid, and this three-step reaction all is exothermic reactions.Usually divide high potential temperature, middle potential temperature and low potential temperature respectively into according to reacted temperature.Instantly global energy day is becoming tight, and makes full use of the reaction heat in the chemical production processes, is indispensable important component part in the suitability for industrialized production.Existing both at home and abroad at present ripe recovery technology reclaims these energy, and the sulfuric acid reaction heat recovery rate is reached more than 95%.Wherein high, middle potential temperature energy recovery technology Yin Wendu is higher, and relatively recovery technology is comparatively simple and ripe, and low potential temperature recovery technology is started late, though ripe recovery technology is arranged, selecting for use etc. of the type selecting of equipment, material still has the space that can promote.
Absorb heat transmission equipment---the evaporimeter in the hot recovery as low potential temperature in the gas washing in SA production, principal mode is the shell-and-tube heat transmission equipment at present, and the planform of its heat exchanger tube is a light pipe.The concentrated sulfuric acid of heat carries out the transmission of heat with the outer water of pipe through tube wall in pipe, the energy of the interior hot acid of pipe is taken away by the water of outer tube and cooled off, and water obtains being warming up to boiling behind the heat, is phase-changed into steam, thereby reaches the purpose of energy recovery.Evaporimeter is the heat exchange unit equipment of classics.The heat that needs to reclaim must be accomplished through the wall between cold and hot two media, because the heat that reclaims is larger, so corresponding heat exchange area is also bigger, single device is huger, and cost is high.
Summary of the invention
The purpose of the utility model is to set about from improving heat exchange efficiency, discloses in a kind of gas washing in SA production hanging down the absorption reaction heat reclamation device of potential temperature.
The utility model is achieved in that in a kind of gas washing in SA production hanging down the absorption reaction heat reclamation device of potential temperature; It is characterized in that: described retracting device is the still formula evaporimeter of U type heat exchanger tube; Described U type heat exchanger pipe adopts the convergent-divergent pipe, and the convergent-divergent pipeline is arranged to the reciprocating type arranged of U type in evaporimeter.The planform of said U type heat exchanger tube is the XDS alloy pipe of convergent-divergent tubular type, and the length of expander section and the length ratio of contraction section are 1:4 in each convergent-divergent tube coupling distance.
The key of the utility model is exactly to adopt the version that changes heat exchanger tube to improve heat exchange efficiency, thereby reduces heat exchange area, reduction cost, reduces the damage probability in the production process, guarantees the utilization of capacity of retracting device.
The beneficial effect of the utility model is:
1, U type still formula evaporimeter: reduce the thermal stress of heat exchanger tube, the single tube plate, corresponding spoilage reduces, and is easy to maintenance.
2, the heat exchanger tube that adopts is by constituting to repeating continuous caliber expansion segment and caliber contraction section along tubular axis: give full play to the change in flow of fluid in the convergent-divergent pipe; Reduce the thickness of retention layer; Thereby augmentation of heat transfer effect; Improve heat transfer coefficient, its heat exchange efficiency of evaporimeter of same production capacity can improve 30%.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the convergent-divergent tubular construction sketch map of A portion among Fig. 1.
Among the figure: 1, bobbin carriage; 2, evaporator tube; 3, U type heat exchanger tube.
The specific embodiment
According to attaching Fig. 1 and 2, to the absorption reaction heat reclamation device of low potential temperature, retracting device is the still formula evaporimeter of U type heat exchanger tube in a kind of gas washing in SA production of the utility model.The Tube Sheet of Heat Exchanger of evaporimeter adopts the convergent-divergent pipe, and the convergent-divergent pipeline is arranged to the reciprocating type arranged of U type, i.e. U type heat exchanger tube 3 in evaporator tube 2.The planform of U type heat exchanger tube 3 pipes is the XDS alloy pipe of convergent-divergent tubular type, and the length of expander section and the length ratio of contraction section are 1:4 in each convergent-divergent tube coupling distance.
Water gets into from the afterbody of evaporator tube 2, and through the outside of the U of evaporator type heat exchanger tube 3, the heat of sulfuric acid is absorbed by water in the U type heat exchanger tube 3, and the steam of formation is discharged from the top of evaporator tube 2.Along with the production of sulfuric acid, constantly water temperature is promoted to boiling and forms steam, low potential temperature heat is utilized again and again.
Claims (2)
- In the gas washing in SA production to the absorption reaction heat reclamation device of low potential temperature; It is characterized in that: described retracting device is the still formula evaporimeter of U type heat exchanger tube; Described U type heat exchanger pipe adopts the convergent-divergent pipe, and the convergent-divergent pipeline is arranged to the reciprocating type arranged of U type in evaporimeter.
- According in the described gas washing in SA production of claim 1 to the absorption reaction heat reclamation device of low potential temperature; It is characterized in that: the planform of said U type heat exchanger tube is the XDS alloy pipe of convergent-divergent tubular type, and the length of expander section and the length ratio of contraction section are 1:4 in each convergent-divergent tube coupling distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203746218U CN202304499U (en) | 2011-10-08 | 2011-10-08 | Reaction heat absorbing and recovering device for low temperature level in sulfuric acid production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203746218U CN202304499U (en) | 2011-10-08 | 2011-10-08 | Reaction heat absorbing and recovering device for low temperature level in sulfuric acid production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202304499U true CN202304499U (en) | 2012-07-04 |
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ID=46373382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203746218U Expired - Lifetime CN202304499U (en) | 2011-10-08 | 2011-10-08 | Reaction heat absorbing and recovering device for low temperature level in sulfuric acid production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202304499U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108061288A (en) * | 2017-12-25 | 2018-05-22 | 哈尔滨锅炉厂有限责任公司 | Integrated steam generator and steam generating method |
| CN112441567A (en) * | 2021-01-04 | 2021-03-05 | 联仕(昆山)化学材料有限公司 | Production process of electronic-grade sulfuric acid and low-temperature evaporation, purification and absorption device for production |
-
2011
- 2011-10-08 CN CN2011203746218U patent/CN202304499U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108061288A (en) * | 2017-12-25 | 2018-05-22 | 哈尔滨锅炉厂有限责任公司 | Integrated steam generator and steam generating method |
| CN112441567A (en) * | 2021-01-04 | 2021-03-05 | 联仕(昆山)化学材料有限公司 | Production process of electronic-grade sulfuric acid and low-temperature evaporation, purification and absorption device for production |
| CN112441567B (en) * | 2021-01-04 | 2021-09-10 | 联仕(昆山)化学材料有限公司 | Production process of electronic-grade sulfuric acid and low-temperature evaporation, purification and absorption device for production |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |
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| CX01 | Expiry of patent term |