CN203461821U - Sulfuric acid heat exchange system capable of effectively reducing cost - Google Patents
Sulfuric acid heat exchange system capable of effectively reducing cost Download PDFInfo
- Publication number
- CN203461821U CN203461821U CN201320518960.8U CN201320518960U CN203461821U CN 203461821 U CN203461821 U CN 203461821U CN 201320518960 U CN201320518960 U CN 201320518960U CN 203461821 U CN203461821 U CN 203461821U
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- sulfuric acid
- interchanger
- exchange system
- heat exchange
- 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 - Fee Related
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Abstract
The utility model discloses a sulfuric acid heat exchange system capable of effectively reducing cost. The sulfuric acid heat exchange system comprises a heat exchanger, an absorption tower I, an absorption tower II, a converter, a gas inlet pipe and a gas return pipe; the heat exchanger is connected with the absorption tower I and the converter via the gas inlet pipe and connected with the absorption tower II via the gas return pipe; and a buffer heat exchanger is arranged between the heat exchanger and the absorption tower I. According to the sulfuric acid heat exchange system, the buffer heat exchanger is additionally arranged on an original heat exchanger so that low-temperature sulfur dioxide firstly enters the original heat exchanger through the buffer heat exchanger, the water content in the low-temperature sulfur dioxide is decreased and the corrosion of corrosive liquid on the heat exchanger condensed by other corrosive gases is reduced. When the sulfuric acid heat exchange system is replaced, only the buffer heat exchanger needs to be replaced. As the height of the buffer heat exchanger is reduced to 1/5 to 1/6 of the original height, the overall size is reduced, thus the equipment replacement cost is reduced, the equipment replacement time is further shortened and the operation rate of sulfuric acid production is improved.
Description
Technical field
The utility model belongs to heat exchanging apparatus technical field, is specifically related to a kind of simple in structurely, is easy to change the sulfuric acid heat exchange system that can effectively reduce costs.
Background technology
In sulfuric acid making processes, the sulphur concentrate burning sulfur dioxide gas that generates need to reach certain temperature and just can change into sulfur trioxide gas, so that absorb, generate sulfuric acid, sulfur dioxide gas temperature after purifying is lower than 70 ℃, can not reach the requirement of conversion far away, so need to carry out heat exchange in heat exchanger, to improve its temperature.The common high 8000mm of sulfuric acid heat exchanger of prior art, with steel, make, the inside cover has stainless steel tube, unavoidably can be corroded (in gas, containing part moisture) by sulfurous gas and sulfur trioxide gas in use for some time, after corrosion failure, the transformation efficiency of sulfuric acid and quality are had to considerable influence, now, more switching heat-exchanger is to guarantee conversion rate of products and quality, within general 1 year, change once left and right, but this interchanger height is higher, volume is larger, while conventionally changing, difficulty is larger, each replacing needs more than ten day time, have a strong impact on driving rate, and it is more to make the material needing, and just can not recycle after changing, increased production cost.For this reason, develop a kind of simple in structure, be easy to change, the sulfuric acid heat exchange system that working stability can effectively reduce costs is reliably the effective way addressing this problem.
Utility model content
The purpose of this utility model be to provide a kind of simple in structure, be easy to change the sulfuric acid heat exchange system that working stability can effectively reduce costs reliably.
The purpose of this utility model is to realize like this, comprise interchanger, a suction tower, two suction towers, convertor, inlet pipe and muffler, described interchanger connects one by inlet pipe and inhales tower and convertor, by muffler, connect two and inhale tower, described interchanger and is inhaled between tower and is provided with buffering interchanger.
The utility model is adopted increases buffering interchanger on original interchanger basis, make low temperature sulfurous gas first by buffering interchanger, enter into again former interchanger, reduced the corrosion that corrosive liquid heat exchanger that water in low temperature sulfur dioxide gas and other corrosive gases condense into causes.During replacing, only need exchange buffering interchanger.Because buffering interchanger height is reduced to originally 1/5 ~ 1/6, overall volume has been dwindled, and therefore reduces equipment replacement cost, has also saved the equipment replacement time, has improved the driving rate of gas washing in SA production.
Accompanying drawing explanation
Fig. 1 is the utility model one-piece construction schematic diagram;
In figure: 1-heat exchanger, 2-mono-inhales tower, and 3-bis-inhales tower, and 4-cushions interchanger, 5-convertor, 6-inlet pipe, 7-muffler, 8-heating unit.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described, but must not to the utility model, be limited by any way, any change or the improvement based on the utility model training centre, done, all belong to protection domain of the present utility model.
As shown in Figure 1, the utility model comprises interchanger 1, a suction tower 2, two suction towers 3, convertor 5, inlet pipe 6 and muffler 7, described interchanger 1 connects one by inlet pipe 6 and inhales tower 2 and convertor 5, by muffler 7, connect two and inhale tower 3, described interchanger 1 and is inhaled between tower 2 and is provided with and cushions interchanger 4.
Described buffering interchanger 4 is highly 1/6 ~ 1/5 of interchanger 1 height.
Described buffering interchanger 4 inwalls are provided with high temperature resistant, anti-corrosion layer.
Described buffering interchanger 4 cross sections equate with interchanger 1 cross section.
Described interchanger 1 arranges in groups.
Between described interchanger 1 and convertor 5, be provided with heating unit 8.
Described heating unit 8 is electric furnace.
principle of work of the present utility model and working process:
The utility model is adopted increases buffering interchanger on original interchanger basis, make low temperature sulfurous gas first by buffering interchanger, enter into again former interchanger, reduced the corrosion that corrosive liquid heat exchanger that water in low temperature sulfur dioxide gas and other corrosive gases condense into causes.During replacing, only need exchange buffering interchanger.Because buffering interchanger height is reduced to originally 1/5 ~ 1/6, overall volume has been dwindled, and therefore reduces equipment replacement cost, has also saved the equipment replacement time, has improved the driving rate of gas washing in SA production.
The utility model working process: first low temperature sulfur dioxide gas enters into buffering interchanger, progressively by each interchanger middle part, carry out heat exchange again, finally arriving heating unit suitably heats to invert point, then enter convertor (the inside is placed with vanadium catalyst), carry out sulfurous gas to the conversion of sulphur trioxide, after conversion because chemical reaction gas temperature can rise to some extent, high-temperature gas returns along muffler, carry out heat exchange with the low temperature sulfur dioxide gas now just passing through from inlet pipe on the way, sulfur dioxide gas temperature after exchange is even heated without starting heating unit when envrionment temperature is higher.
When sulfurous gas temperature is lower, the water in gas and other corrosive gases easily condense into corrosive liquid, and first interchanger passing through is caused to sizable corrosion.Larger to the corrosion of first interchanger before there is no improvement, because of former heat exchanger volume larger, cost of manufacture, Production Time and replacing time can be corresponding high, arrange after buffering interchanger, buffering interchanger replaces former first interchanger to accept the corrosion of gas, because the speed that is corroded of large heat exchanger and Mini-type heat exchanger is the same with life cycle substantially, so setting of buffering interchanger, not only can reduce equipment replacement cost, also save the equipment replacement time, improved the driving rate of gas washing in SA production.
Claims (7)
1. the sulfuric acid heat exchange system that can effectively reduce costs, comprise interchanger (1), a suction tower (2), two suction towers (3), convertor (5), inlet pipe (6) and muffler (7), described interchanger (1) connects a suction tower (2) and convertor (5) by inlet pipe (6), by muffler (7), connect two suction towers (3), it is characterized in that being provided with buffering interchanger (4) between described interchanger (1) and a suction tower (2).
2. the sulfuric acid heat exchange system that can effectively reduce costs according to claim 1, is characterized in that described buffering interchanger (4) is highly 1/6 ~ 1/5 of interchanger (1) height.
3. the sulfuric acid heat exchange system that can effectively reduce costs according to claim 1 and 2, is characterized in that described buffering interchanger (4) inwall is provided with high temperature resistant, anti-corrosion layer.
4. the sulfuric acid heat exchange system that can effectively reduce costs according to claim 1 and 2, is characterized in that described buffering interchanger (4) cross section equates with interchanger (1) cross section.
5. the sulfuric acid heat exchange system that can effectively reduce costs according to claim 1, is characterized in that described interchanger (1) arranges in groups.
6. the sulfuric acid heat exchange system that can effectively reduce costs according to claim 1, is characterized in that being provided with heating unit (8) between described interchanger (1) and convertor (5).
7. the sulfuric acid heat exchange system that can effectively reduce costs according to claim 6, is characterized in that described heating unit (8) is electric furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320518960.8U CN203461821U (en) | 2013-08-24 | 2013-08-24 | Sulfuric acid heat exchange system capable of effectively reducing cost |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320518960.8U CN203461821U (en) | 2013-08-24 | 2013-08-24 | Sulfuric acid heat exchange system capable of effectively reducing cost |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203461821U true CN203461821U (en) | 2014-03-05 |
Family
ID=50174197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320518960.8U Expired - Fee Related CN203461821U (en) | 2013-08-24 | 2013-08-24 | Sulfuric acid heat exchange system capable of effectively reducing cost |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203461821U (en) |
-
2013
- 2013-08-24 CN CN201320518960.8U patent/CN203461821U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20160824 |
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| CF01 | Termination of patent right due to non-payment of annual fee |