CN202655001U - Large-sized sulfur melting kettle - Google Patents
Large-sized sulfur melting kettle Download PDFInfo
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- CN202655001U CN202655001U CN 201220302491 CN201220302491U CN202655001U CN 202655001 U CN202655001 U CN 202655001U CN 201220302491 CN201220302491 CN 201220302491 CN 201220302491 U CN201220302491 U CN 201220302491U CN 202655001 U CN202655001 U CN 202655001U
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- melting kettle
- sulfur melting
- sulfur
- external jacket
- sulphur
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Abstract
The utility model relates to a large-sized sulfur melting kettle, which is a device for recovering elemental sulfur from sulfur foams generated by the wet desulphurization of a sulfur-containing gas. According to the technical scheme, the large-sized sulfur melting kettle is provided with more than one inner jacket; an outer jacket (2) and the inner jackets (3) are overlapped inside and outside to form a sleeve structure; a sulfur melting kettle shell is arranged above the jackets; a sulfur foam distributor (4) and a residue-liquid separator (17) are arranged in the sulfur melting kettle shell (1); a sulfur foam inlet (6) is formed in the top of the sulfur melting kettle shell; a clear liquid outlet (7) is formed in the residue-liquid separator; a sulfur outlet (8) is formed in the bottom of the outer jacket; and a heat source inlet and a heat source outlet are formed in the outer jacket respectively. The large size of sulfur melting kettle equipment is realized on the basis of reduction in the energy consumption, and a floor space is reduced. Compared with the background art, the large-sized sulfur melting kettle has the advantages that a heat transfer temperature difference is lowered by 5 to 10 DEG C, and required heat source temperature is lowered by 5 to 10 DEG C; and the sulfur melting capability of a single large-sized sulfur melting kettle is multiplied, the energy consumption is reduced by over 10 percent, and in addition, the phenomena of pipe blockage caused by residues in the sulfur and low sulfur quality can be eliminated.
Description
Technical field
The utility model relates to a kind of large-scale sulfur melting kettle, is that a kind of sulphur foam for adopting wet desulphurization to produce to sulfurous gas carries out the device that elemental sulfur reclaims.
Background technology
Wet desulphurization is low because of desulphurization cost, desulfuration efficiency is high is widely adopted, and the sulphur foam that at present wet desulphurization is produced carries out elemental sulfur and reclaims the sulfur melting kettle that adopts, and major part is jacket structured form, and thermal source is steam or circulating heat conduction oil, and the sulfur melting kettle diameter is less.Continuous progress along with industry, the quantity of sulphur foam increased considerably thereupon after desulfurizer maximized, in the face of a large amount of sulphur foams, background technology adopts the method for a plurality of sulfur melting kettle parallel connections to process, cause occupation area of equipment large, the whole energy consumption of molten sulphur is higher, and main cause is that chuck conducts heat the main mode that relies on radiation with the medium in the heat transferred sulfur melting kettle, and the scope of radiant heat transfer is larger.Heat transfer efficiency can significantly descend after radiation scope increased, for example: China Patent No. 97225750.0 is described, the sulfur melting kettle diameter is 600-900mm, the interval of radiant heat transfer is 300-450mm, and sulfur melting kettle mid portion medium temperature is low, and the sulphur foam does not reach the temperature of melting, very easily form slag inclusion, the sulphur quality reduces, and is prone to the plugging phenomenon, affects the use of sulfur melting kettle.Occur to take the method that increases steam pressure or improve the conduction oil temperature to increase heat transfer temperature difference to solve in order to stop this phenomenon, require the pressure (gauge pressure) of thermal source saturated vapor 〉=0.4MPa or conduction oil temperature 〉=150 ℃, heat transfer temperature difference 〉=30 ℃, the energy consumption of sulfur melting kettle is higher.The sulfur melting kettle energy consumption that existing diameter is less, sulphur quality etc. all obviously are better than the large sulfur melting kettle of diameter; Improve for some device of this problem, for example: China Patent No. 201120214403.8 is described, bottom at sulfur melting kettle increases spiral heater, certain effect is arranged, the diameter of sulfur melting kettle can be amplified to 900-1200mm, but exists the slit very easily slag to be blocked the formation slag inclusion between the tube outer wall of coil pipe, and slag can sharply descend the usefulness that coil pipe encases rear sulfur melting kettle, the slag inclusion phenomenon can affect the normal use of sulfur melting kettle equally with even more serious.
The background technology sulfur melting kettle exists subject matter to be: the radiant heat transfer scope is larger, the zone far away apart from thermal source is that sulfur melting kettle middle part heat transfer efficiency descends, medium temperature is low, easily form slag inclusion, sulphur is of poor quality, the phenomenon that plugging very easily occurs affects the use of sulfur melting kettle, and needed heat source temperature is higher simultaneously, cause the sulfur melting kettle energy consumption high, and can't realize maximizing.Extensive molten sulphur needs the use in parallel of a plurality of sulfur melting kettles, and floor space is large.
The utility model content
The utility model purpose provides a kind of large-scale sulfur melting kettle, and the thermal efficiency is high, and energy consumption is low, radiant heat transfer can be controlled in the less scope, heat transfer temperature difference is little, and without the heat transfer low-temperature space, the sulphur quality is good, without slag inclusion and plugging phenomenon, stable equipment operation, the heat source temperature that needs is low, can maximize, reduce floor space, solve the problems referred to above that exist in the background technology.
The technical solution of the utility model is: a kind of large-scale sulfur melting kettle comprises sulfur melting kettle housing, sulphur foam inlet, purified liquor outlet, sulphur outlet, sulphur foam distributor, external jacket, interior chuck, slag liquid/gas separator, thermal source import and export; Described inner clip cover quantity is more than one, external jacket and interior chuck are inside and outside arranged superposed, tube-in-tube structure, the top is provided with the sulfur melting kettle housing, be provided with sulphur foam distributor and slag liquid/gas separator in the sulfur melting kettle housing, the sulfur melting kettle case top is provided with the sulphur foam inlet, and the slag liquid/gas separator is provided with purified liquor outlet, the external jacket bottom is provided with the sulphur outlet, is respectively equipped with thermal source on the external jacket and imports and exports.
Described inner clip cover quantity is a plurality of, decides arranged superposed between a plurality of interior chucks and the external jacket, tube-in-tube structure according to the diameter of sulfur melting kettle; Clear distance between the inside and outside chuck is 100-350mm, take 150-250mm as best.For example: diameter can arrange an external jacket, two interior chucks less than the following sulfur melting kettle of 2000mm, and diameter can arrange an external jacket, three to four interior chucks more than or equal to the sulfur melting kettle of 2000mm, along with the quantity of the increase chuck of sulfur melting kettle diameter increases thereupon.
Between the top of interior chuck and the inwall of external jacket the thermal source cross over pipe is set, the quantity of thermal source cross over pipe is one or more, to arrange 3-4 as best; Also can pass external jacket and the sulfur melting kettle housing arranges the thermal source inlet/outlet pipe to the inner clip cover separately.
The bottom of interior chuck outer wall and add between the lower inner wall of cover and be provided with the thermal source cross over pipe.
The outer wall of interior chuck adopts gusset to be connected with the inwall of external jacket, with chuck in fixing.
Described inside and outside chuck can adopt two traditional metallic plate inner-outer sleeve connecting structures, also can adopt water-cooling wall or pattern wall construction, can also adopt the profiles such as annular comb to be similar to the version of chuck.
When thermal source was steam, the top of external jacket was steam inlet, and condensate liquid is discharged from the bottom of external jacket; When thermal source was circulating heat conduction oil, high temperature heat conductive oil entered from the bottom of external jacket, and the conduction oil after the cooling is drawn from the top of external jacket.
Adopt the utility model, the sulphur foam enters sulfur melting kettle by import and evenly distributes by the sulphur foam distributor, the annular space and the interior chuck that enter between external jacket and the interior chuck are inboard, absorb chuck endogenous pyrogen liberated heat, temperature is elevated to about 120 ℃, elemental sulfur melting in the sulphur foam becomes Molten sulphur, Molten sulphur is because of than the bottom of great heavy collection to sulfur melting kettle, a large amount of doctor solutions in the sulphur foam make progress floating and the Molten sulphur layering with a small amount of sulphur slag because proportion is little, behind slag liquid/gas separator separate sulfur slag, the continuous or periodic discharge sulfur melting kettle of clear liquid, Molten sulphur regularly is discharged in the grinding tool through naturally becoming block sulphur after the cooling by thermal insulation casing.
The beneficial effects of the utility model are: for the problem of existing sulfur melting kettle existence, adopt the sulfur melting kettle of two or more chuck overlay structures, solve because the rear regional heat transfer efficiency far away apart from thermal source of sulfur melting kettle diameter increase descends, medium temperature is low, easily form slag inclusion, sulphur is of poor quality, the problem that the plugging phenomenon very easily occurs realizes the maximization of sulfur melting kettle equipment simultaneously on the basis that reduces energy consumption, reduce floor space.Compare heat transfer temperature difference with background technology and reduce 5-10 ℃, the heat source temperature that needs reduces 5-10 ℃; The molten sulphur ability of separate unit significantly improves, and Energy Intensity Reduction can be eliminated the plugging of sulphur slag inclusion, the ropy phenomenon of sulphur simultaneously more than 10%.
Description of drawings
Accompanying drawing 1 is the utility model embodiment schematic diagram;
Accompanying drawing 2 is the utility model embodiment A-A generalized sections;
Among the figure: sulfur melting kettle housing 1, external jacket 2, interior chuck 3, sulphur foam distributor 4, thermal insulation casing 5, sulphur foam inlet 6, purified liquor outlet 7, sulphur outlet 8, thermal source import and export 9 and 12, interior chuck thermal source import and export 10 and 13, thermal insulation casing thermal source import and export 11 and 14, interior chuck gusset 15, foam distributor gusset 16, slag liquid/gas separator 17.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail by embodiment.
A kind of large-scale sulfur melting kettle comprises sulfur melting kettle housing 1, sulphur foam inlet 6, purified liquor outlet 7, sulphur outlet 8, sulphur foam distributor 4, external jacket 2, interior chuck 3, slag liquid/gas separator 17, thermal source import and export 9 and 12; Described inner clip cover quantity is more than one, external jacket and interior chuck are inside and outside arranged superposed, tube-in-tube structure, the top is provided with the sulfur melting kettle housing, be provided with sulphur foam distributor and slag liquid/gas separator in the sulfur melting kettle housing, the sulfur melting kettle case top is provided with the sulphur foam inlet, and the slag liquid/gas separator is provided with purified liquor outlet, the external jacket bottom is provided with the sulphur outlet, is respectively equipped with thermal source on the external jacket and imports and exports.
In an embodiment, it is that thermal source is used for 300,000 tons of synthesis ammonia plant sulphur foam elemental sulfurs recovery that the large-scale sulfur melting kettle of three chuck overlay structures of diameter 1400mm adopts the 0.3MPa saturated vapor, comprise: sulfur melting kettle housing 1, external jacket diameter are that 1400mm, interior chuck are two, diameter difference 400mm and 900mm, sulphur foam distributor 4, sulphur foam inlet 6, purified liquor outlet 7, sulphur outlet 8, external jacket steam import and export 9, condensate outlet 12, interior chuck steam inlet 10, interior chuck condensate liquid UNICOM mouth 13, slag liquid/gas separator 17.Add cover and two interior chucks stack structure of attaching most importance to, two interior chucks are similarly arranged superposed; The steam inlet pipe 10 that inner clip puts links to each other with the inwall of condensate liquid cross over pipe 13 with external jacket 2, also can pass external jacket 2 and sulfur melting kettle housing 1 and arrange separately; The outer wall of interior chuck 3 is connected with the inwall of external jacket 2 by one or more gussets 15, with chuck 3 in fixing;
Sulfur content is that the sulphur foam of 3-10% enters by sulfur melting kettle top sulphur foam inlet 6, evenly enter annular space between external jacket and the interior chuck and the inboard of interior chuck through over cure foam distributor 4, steam heat release in external jacket 3 and the interior chuck 3 is with heat transferred sulphur foam, the sulphur foam temperature is elevated to about 120 ℃, elemental sulfur melting wherein is liquid, depositing to the sulfur melting kettle bottom is discharged by sulphur outlet 8 through thermal insulation casing 5, the inside upper part that doctor solution in the sulphur foam and a small amount of sulphur slag accumulate in sulfur melting kettle and the layering of liquid elemental sulfur are through slag liquid/gas separator 17, the desulfurization clear liquid is discharged by purified liquor outlet 7, realizes continuous sulfur melting.
The radiant heat transfer scope is 125mm between the chuck outer wall, and the inboard radiant heat transfer scope of chuck is 200mm, compares the heat transfer scope with background technology and has dwindled nearly 50%.
Sulfur content is by 5-8% in the foam, diameter is that three inside and outside chuck overlay structure sulfur melting kettles annual output sulphur of 1400mm can reach more than the 1500t, the thermal source saturated vapour pressure can drop to 0.3MPa by the 0.4MPa of background technology, steam consumption reduces by 10%, the separate unit sulfur melting kettle can satisfy the needs of producing the molten sulphur of 300,000 tons of synthetic ammonia installation sulphur foams per year, can replace the sulfur melting kettle of 3-4 platform background technology diameter 600-900mm.
Claims (7)
1. a large-scale sulfur melting kettle is characterized in that comprising sulfur melting kettle housing (1), sulphur foam inlet (6), purified liquor outlet (7), sulphur outlet (8), sulphur foam distributor (4), external jacket (2), interior chuck (3), slag liquid/gas separator (17), thermal source import and export (9,12); Described inner clip cover quantity is more than one, external jacket and interior chuck are inside and outside arranged superposed, tube-in-tube structure, the top is provided with the sulfur melting kettle housing, be provided with sulphur foam distributor and slag liquid/gas separator in the sulfur melting kettle housing, the sulfur melting kettle case top is provided with the sulphur foam inlet, and the slag liquid/gas separator is provided with purified liquor outlet, the external jacket bottom is provided with the sulphur outlet, is respectively equipped with thermal source on the external jacket and imports and exports.
2. described a kind of large-scale sulfur melting kettle according to claim 1 is characterized in that described inner clip cover quantity is a plurality of, arranged superposed between a plurality of interior chucks and the external jacket, tube-in-tube structure.
3. described a kind of large-scale sulfur melting kettle according to claim 1 and 2 is characterized in that the clear distance between the inside and outside chuck is 100-350mm.
4. described a kind of large-scale sulfur melting kettle according to claim 2 is characterized in that diameter arranges an external jacket, two interior chucks less than the following sulfur melting kettle of 2000mm, and diameter arranges an external jacket, three to four interior chucks more than or equal to the sulfur melting kettle of 2000mm.
5. described a kind of large-scale sulfur melting kettle according to claim 1 and 2 is characterized in that between the inwall of the top of interior chuck and external jacket the thermal source cross over pipe being set, and the quantity of thermal source cross over pipe is one or more.
6. described a kind of large-scale sulfur melting kettle according to claim 1 and 2 is characterized in that the bottom of interior chuck outer wall and adds between the lower inner wall of cover being provided with the thermal source cross over pipe.
7. described a kind of large-scale sulfur melting kettle according to claim 1 and 2 is characterized in that the outer wall of interior chuck is connected with the inwall of external jacket by one or more gussets (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220302491 CN202655001U (en) | 2012-06-27 | 2012-06-27 | Large-sized sulfur melting kettle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220302491 CN202655001U (en) | 2012-06-27 | 2012-06-27 | Large-sized sulfur melting kettle |
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| CN202655001U true CN202655001U (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220302491 Expired - Lifetime CN202655001U (en) | 2012-06-27 | 2012-06-27 | Large-sized sulfur melting kettle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105217578A (en) * | 2015-09-22 | 2016-01-06 | 莱芜钢铁华威工程有限公司 | A kind of coking sulphur cream prepares technique and the device of sulphur |
| CN113280671A (en) * | 2021-05-31 | 2021-08-20 | 辽宁元创石化技术有限公司 | Heat exchanger for sulfur melting kettle |
-
2012
- 2012-06-27 CN CN 201220302491 patent/CN202655001U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105217578A (en) * | 2015-09-22 | 2016-01-06 | 莱芜钢铁华威工程有限公司 | A kind of coking sulphur cream prepares technique and the device of sulphur |
| CN105217578B (en) * | 2015-09-22 | 2017-12-26 | 莱芜钢铁华威工程有限公司 | A kind of coking sulphur cream prepares the technique and device of sulphur |
| CN113280671A (en) * | 2021-05-31 | 2021-08-20 | 辽宁元创石化技术有限公司 | Heat exchanger for sulfur melting kettle |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130109 |
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| CX01 | Expiry of patent term |