CN203741042U - Efficient afterheat recovery device of sulfuric acid - Google Patents
Efficient afterheat recovery device of sulfuric acid Download PDFInfo
- Publication number
- CN203741042U CN203741042U CN201320710554.1U CN201320710554U CN203741042U CN 203741042 U CN203741042 U CN 203741042U CN 201320710554 U CN201320710554 U CN 201320710554U CN 203741042 U CN203741042 U CN 203741042U
- Authority
- CN
- China
- Prior art keywords
- sulfuric acid
- recovery device
- outlet
- efficient
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 238000011084 recovery Methods 0.000 title claims abstract description 22
- 239000002253 acid Substances 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000010521 absorption reaction Methods 0.000 claims description 23
- 239000002918 waste heat Substances 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 15
- 125000004122 cyclic group Chemical group 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000007865 diluting Methods 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002407 reforming Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses an efficient afterheat recovery device of sulfuric acid. The device comprises an absorbing column, a circulating acid tank, a steam generator and a water supply heater, wherein the circulating acid tank in which a circulating acid pump is arranged is connected to the bottom part of the absorbing column; SO3-containing first converting gas flows from the bottom of the absorbing column and then is in contact with sulfuric acid in the absorbing column, sulfuric acid absorbing SO3 is heated and flows into the circulating acid tank, the circulating acid pump pumps the sulfuric acid absorbing SO3 into the steam generator to exchange heat with water from the water supply heater, the sulfuric acid is cooled and produces steam, and the produced steam is discharged through a first outlet in the steam generator. With the adoption of the efficient afterheat recovery device of sulfuric acid, the steam yield per ton of acid in sulfuric acid production is increased from about 1.2t to about 1.7t; in addition, the efficient afterheat recovery device is matured and reliable in technology, simple in equipment, and does not need special mixing and diluting devices, so that the initial equipment investment and operation cost are decreased.
Description
Technical field
The sulfuric acid that the utility model relates in chemical industry is manufactured field, is specifically related to a kind of device of reclaim(ed) sulfuric acid waste heat.
Background technology
The Application and Development of sulfuric acid heat recovery technology is long-standing, and principle is by the temperature of absorption system recycle acid, is used for producing low-pressure steam.All there is complex structure in the retrieving arrangement in industry at present, the problem that equipment cost is high, and also the sour steam generating capacity of ton generally can only reach 1.2 tons of left and right.
Given this, develop a kind of simple in structure, cost is lower and the retrieving arrangement of excellent performance is significant.
Utility model content
For solving described deficiency of the prior art, the purpose of this utility model is to provide a kind of efficient sulfuric acid waste-heat recovery device, the waste heat fully producing in the absorption of reclaim(ed) sulfuric acid and dilution, and effectively conversion is used, simple in structure, equipment cost is controlled.
For solveing the technical problem, the technical scheme that efficient sulfuric acid waste-heat recovery device of the present utility model adopts is as follows:
A kind of efficient sulfuric acid waste-heat recovery device, comprise: absorption tower, circulation acid tank, vapour generator and feedwater heating apparatus, it is characterized in that, described circulation acid tank is connected in the bottom on absorption tower and its and is provided with cyclic acid pump, one side bottom on described absorption tower is provided with process gas inlets, described vapour generator connects described cyclic acid pump, described vapour generator comprises the first outlet and the second outlet, described the first outlet is low-pressure steam outlet, described the second outlet connects the top on described feedwater heating apparatus and absorption tower, on described feedwater heating apparatus, be provided with sulfuric acid outlet and deaerated water import.
Further, the top on aforementioned absorption tower is provided with spray header for spraying sulfuric acid.Preferably, the sulfuric acid concentration spraying in absorption tower is 99%.
Further, aforementioned vapour generator inside is provided with shell and tube heat exchanger or plate-type heat exchanger.
Further, described shell and tube heat exchanger is U-shaped shell side tube and shell heat exchanger, comprise U-shaped shell side, tube sheet, tube bank and bobbin carriage, on the two ends sidewall of described U-shaped shell side, be provided with first mouth of pipe, the both ends open place of described U-shaped shell side is provided with described tube sheet, and described tube bank is arranged in described U-shaped shell side, and the two ends of described tube bank all connect described tube sheet, on described tube sheet, be provided with described bobbin carriage, on described bobbin carriage, be provided with second mouth of pipe.U-shaped shell side tube and shell heat exchanger of the present utility model, all adopt U-shaped structure owing to managing layer and shell, thereby eliminate due to the structure deteriorate that in pipe layer and shell, cold and hot medium temperature stress causes, ensured equipment reliability of operation and extended the life-span that equipment uses.Floating head type and stuffing box type tube and shell heat exchanger relatively, U-shaped shell side tube and shell heat exchanger is simple in structure, easy to maintenance.
Further, described U-shaped shell side comprises one half bend, the first straight section shell and the second straight section shell, and described the first straight section shell and the second straight section shell are connected respectively the two ends of described one half bend.
Further, described tube bank is parallel with described U-shaped shell side.
In addition, efficient sulfuric acid waste-heat recovery device of the present utility model also comprises an acid storage tank, and unnecessary high-temperature sulfuric acid is drawn by the second outlet of vapour generator, sends into acid storage tank and store after feedwater heating apparatus cooling.
Inventive principle: comprise SO
3a reforming gas contact with the sulfuric acid in absorption tower after being entered by absorption tower below, absorbed SO
3sulfuric acid temperature raise and flow into circulation acid tank, sent in vapour generator Yu from the water of feedwater heating apparatus and carried out heat exchange by cyclic acid pump, sulfuric acid temperature reduces and produces steam simultaneously, the steam of generation is drawn by the outlet of first on vapour generator.
Beneficial effect: efficient sulfuric acid waste-heat recovery device of the present utility model, can make gas washing in SA production ton acid steam generating capacity bring up to 1.7 tons of left and right from 1.2 tons of left and right, technology maturation is reliable, and equipment is simple, without special mixed diluting device, equipment initial investment and running cost are reduced.
Brief description of the drawings
Fig. 1 is efficient sulfuric acid waste-heat recovery device schematic diagram of the present utility model;
Fig. 2 is the structural representation of U-shaped shell side tube and shell heat exchanger.
Reference numeral implication: 1, absorption tower, 2, circulation acid tank, 3, cyclic acid pump, 4, vapour generator, 5, feedwater heating apparatus, 401, the first outlet, 402, the second outlet.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
Referring to Fig. 1 and Fig. 2, efficient sulfuric acid waste-heat recovery device of the present utility model comprises: absorption tower 1, circulation acid tank 2, vapour generator 4 and feedwater heating apparatus 5, wherein, circulation acid tank 2 is connected in the bottom on absorption tower 1 and its and is provided with cyclic acid pump 3, so that sulfuric acid is pumped into vapour generator 4 from circulation acid tank 2.One side bottom on absorption tower 1 is provided with process gas inlets, vapour generator 4 connects cyclic acid pump 3, vapour generator 4 comprises the first outlet 401 and the second outlet 402, the first outlet is low-pressure steam outlet, the second outlet 402 connects the top on feedwater heating apparatus 5 and absorption tower 1, is provided with sulfuric acid outlet and deaerated water import on feedwater heating apparatus 5.
When device operation, comprise SO
3a reforming gas (from conversion system) entered by 1 below, absorption tower, absorption tower 1 top spray sulfuric acid, concentration is preferably 99%, has absorbed SO
3sulfuric acid temperature raise and flow into circulation acid tank 2, pumped in vapour generator 4 by cyclic acid pump 3, carry out heat exchange with the water from feedwater heating apparatus 5, sulfuric acid temperature is lowered, produce steam, the steam of generation is drawn by the outlet of first on vapour generator 4 401 simultaneously.After sulfuric acid cooling, adopt sulfuric acid or the water of lower concentration to carry out again entering absorption tower 1 recycle after concentration adjustment.
In order to realize heat exchange, vapour generator 4 inside are provided with shell and tube heat exchanger or plate-type heat exchanger, are preferably shell and tube heat exchanger, and heat interchanging area is large, and heat exchange efficiency is high.Shell and tube heat exchanger is U-shaped shell side tube and shell heat exchanger, comprise U-shaped shell side 41, tube sheet 42, tube bank 43 and bobbin carriage 44, on the two ends sidewall of U-shaped shell side 41, be provided with first mouth of pipe, the both ends open place of U-shaped shell side 41 is provided with tube sheet 42, tube bank 43 is arranged in U-shaped shell side 41, the two ends of tube bank 43 all connect tube sheet 42, are provided with bobbin carriage 4 on tube sheet 42, are provided with second mouth of pipe on bobbin carriage 44.Wherein, preferred, U-shaped shell side 41 comprises one half bend, the first straight section shell and the second straight section shell, and the first straight section shell and the second straight section shell are connected respectively the two ends of one half bend.Tube bank 43 is parallel with U-shaped shell side 41.U-shaped shell side tube and shell heat exchanger of the present utility model, all adopt U-shaped structure owing to managing layer and shell, thereby eliminate due to the structure deteriorate that in pipe layer and shell, cold and hot medium temperature stress causes, ensured equipment reliability of operation and extended the life-span that equipment uses.Floating head type and stuffing box type tube and shell heat exchanger relatively, U-shaped shell side tube and shell heat exchanger is simple in structure, easy to maintenance.
In addition, efficient sulfuric acid waste-heat recovery device of the present utility model also comprises an acid storage tank, and unnecessary high-temperature sulfuric acid is drawn by the outlet of second on vapour generator 4 402, sends into acid storage tank and store after feedwater heating apparatus 5 coolings.So, manufacture recovery waste heat when sulfuric acid with regard to ingenious realization, being converted into can be the low-pressure steam that we utilize, and the sour steam generating capacity of ton is up to 1.7 tons of left and right.
The above is only preferred implementation of the present utility model; be noted that for those skilled in the art; do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (7)
1. an efficient sulfuric acid waste-heat recovery device, comprise: absorption tower (1), circulation acid tank (2), vapour generator (4) and feedwater heating apparatus (5), it is characterized in that, described circulation acid tank (2) is connected in the bottom on absorption tower (1) and its and is provided with cyclic acid pump (3), one side bottom on described absorption tower (1) is provided with process gas inlets, described vapour generator (4) connects described cyclic acid pump (3), described vapour generator (4) comprises the first outlet (401) and the second outlet (402), described the first outlet is low-pressure steam outlet, described the second outlet (402) connects the top of described feedwater heating apparatus (5) and absorption tower (1), on described feedwater heating apparatus (5), be provided with sulfuric acid outlet and deaerated water import.
2. the efficient sulfuric acid waste-heat recovery device of one according to claim 1, is characterized in that, the top of described absorption tower (1) is provided with spray header.
3. the efficient sulfuric acid waste-heat recovery device of one according to claim 1, is characterized in that, described vapour generator (4) inside is provided with shell and tube heat exchanger or plate-type heat exchanger.
4. the efficient sulfuric acid waste-heat recovery device of one according to claim 3, it is characterized in that, described shell and tube heat exchanger is U-shaped shell side tube and shell heat exchanger, comprise U-shaped shell side (41), tube sheet (42), tube bank (43) and bobbin carriage (44), on the two ends sidewall of described U-shaped shell side (41), be provided with first mouth of pipe, the both ends open place of described U-shaped shell side (41) is provided with described tube sheet (42), described tube bank (43) is arranged in described U-shaped shell side (41), the two ends of described tube bank (43) all connect described tube sheet (42), on described tube sheet (42), be provided with described bobbin carriage (44), described bobbin carriage is provided with second mouth of pipe on (44).
5. the efficient sulfuric acid waste-heat recovery device of one as claimed in claim 4, it is characterized in that, described U-shaped shell side (41) comprises one half bend, the first straight section shell and the second straight section shell, and described the first straight section shell and the second straight section shell are connected respectively the two ends of described one half bend.
6. the efficient sulfuric acid waste-heat recovery device of one as claimed in claim 4, is characterized in that, described tube bank (43) is parallel with described U-shaped shell side (41).
7. according to the efficient sulfuric acid waste-heat recovery device of one described in claim 1-6 any one, it is characterized in that, also comprise an acid storage tank, part sulfuric acid is drawn by the second outlet (402) of vapour generator (4), sends into acid storage tank and store after feedwater heating apparatus (5) cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320710554.1U CN203741042U (en) | 2013-11-13 | 2013-11-13 | Efficient afterheat recovery device of sulfuric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320710554.1U CN203741042U (en) | 2013-11-13 | 2013-11-13 | Efficient afterheat recovery device of sulfuric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203741042U true CN203741042U (en) | 2014-07-30 |
Family
ID=51340869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320710554.1U Expired - Lifetime CN203741042U (en) | 2013-11-13 | 2013-11-13 | Efficient afterheat recovery device of sulfuric acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203741042U (en) |
-
2013
- 2013-11-13 CN CN201320710554.1U patent/CN203741042U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: NANJING HAILU CHEMICAL TECHNOLOGY Co.,Ltd. Assignor: Yu Xiangdong Contract record no.: 2014320000728 Denomination of utility model: Efficient afterheat recovery device of sulfuric acid Granted publication date: 20140730 License type: Exclusive License Record date: 20141124 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |