CN203923256U - A kind of coal gas of converter cryogenic heat exchanger - Google Patents
A kind of coal gas of converter cryogenic heat exchanger Download PDFInfo
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- CN203923256U CN203923256U CN201420171505.XU CN201420171505U CN203923256U CN 203923256 U CN203923256 U CN 203923256U CN 201420171505 U CN201420171505 U CN 201420171505U CN 203923256 U CN203923256 U CN 203923256U
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Abstract
The utility model discloses a kind of coal gas of converter cryogenic heat exchanger, key is: the central tube of lower openings (2) inserts in housing (8), the upper end, center of central tube is provided with coal gas of converter import (1), upper end, housing side is provided with coal gas of converter outlet (3), between central tube (2) and housing (8), there is circular channel, flue gas is discharged from coal gas of converter outlet (3) by circular channel from coal gas of converter import (1) enters into housing bottom, described central tube inside is provided with membrane wall, and in the middle of inner walls face surrounding and central tube outer wall, be also provided with membrane wall, bottom is provided with ash exhauster (7).The utility model arranges gas-solid separating device and heat-exchanger rig in housing, reclaimed fully the sensible heat of 800 ℃ of following coal gas of steel-smelting revolving furnace, and can effectively solve the gas explosion problem of this temperature section, the sewage discharge problem of avoiding prior art to adopt spraying cooling simultaneously and producing, has saved a large amount of water resourcess.
Description
Technical field
The utility model relates to a kind of cryogenic heat exchanger, relates in particular to a kind of coal gas of converter cryogenic heat exchanger.
Background technology
In convertor steelmaking process, can produce a large amount of high temperature coal gas of converter, current treatment process is first to pass through gasification cooling flue, makes flue-gas temperature be down to approximately 800 ℃ by 1400 ℃ of left and right, then by OG method or LT method, flue-gas temperature is down to below 200 ℃.Although it is not OG method or LT method are different to the processing mode of coal gas of converter, both by coal gas of converter being sprayed water or spraying steam is lowered the temperature, energy-conservation in essence.Obviously, these two kinds of processing modes all do not reclaim the sensible heat of 800 ℃ of following coal gas of converter.Meanwhile, because the consumption of water or steam is huge, not only wasted a large amount of energy, also because coal gas dust content has produced a large amount of factory effluents, need to process simultaneously.
The maximum difficult point that 800 ℃ of following converter gas sensible heats are reclaimed is that the coal gas in this temperature range exists the danger of blast, and countries in the world all do not have the method for safe and feasible yet at present.
Utility model content
The purpose of this utility model is to provide a kind of coal gas of converter cryogenic heat exchanger that can fully reclaim 800 ℃ of following converter gas sensible heats.
The purpose of this utility model is to realize like this, a kind of coal gas of converter cryogenic heat exchanger, it is characterized in that: the central tube of lower openings inserts in housing, the upper end, center of central tube is provided with coal gas of converter import, upper end, housing side is provided with coal gas of converter outlet, between central tube and housing, there is circular channel, flue gas is discharged from coal gas of converter outlet by circular channel from coal gas of converter import enters into housing bottom, described central tube inside is provided with membrane wall, and in the middle of inner walls face surrounding and central tube outer wall, be also provided with membrane wall, bottom is provided with ash exhauster.
Described central tube and housing are water wall structure.
Described ash exhauster is water-bath or fluidizer.
Described housing is the water wall structure of independent splicing.
The coal gas of converter that contains the red particle of uncombusted and dust vertically enters central tube by coal gas of converter import, effect due to gravitational dust collection, after making that larger particles in coal gas is separated and getting off, the fluidized wind cool region that enters housing bottom by action of gravity carries out fast cooling.At coal gas of converter, when central tube down, carry out heat exchange with the interchanger that is arranged on shell wall side surrounding.Coal gas of converter is divided into multiply air-flow after in this interchanger and enters in the interchanger of cutting apart, and has played so the initiatively effect of flame proof, has reduced the blast problem of coal gas of converter in boiler temperature-fall period.
The utlity model has following beneficial effect, this interchanger of the utility model is different with other waste heat boiler, belong to a kind of twin-channel membrane wall structure, its main application is the high temperature ash slag that enters interchanger and coal gas of converter to be carried out being cooled to after thermal exchange when flowing through center-aisle the temperature of certain regulation by thermal radiation and water wall wherein, oarse-grained slag falls into water-bath or the fluidisation ash bucket of interchanger bottom, further cooling enters after dregs breaker break, is transported to locking material system; Coal gas of converter through interchanger central tube flows along membrane wall upward by the circular channel between inner and outer tubes, goes out after turning back to the top of radiant coolers.Coal gas of converter is divided into multiply air-flow after in this interchanger and enters in the interchanger of cutting apart, and has played so the initiatively effect of flame proof, has reduced the blast problem of coal gas of converter in boiler temperature-fall period.The sewage discharge problem of having avoided prior art to adopt spraying cooling simultaneously and having produced, has saved a large amount of water resourcess.The utility model interchanger adopts plate-type heat exchanger, simple in structure, compact, heat exchange efficiency is high, can directly replace existing OG method or LT method coal gas processing device, utilize existing space to arrange, existing coal gas of converter treatment system is transformed and can be come into operation.
Accompanying drawing explanation
Fig. 1 is the utility model example structure schematic diagram;
Fig. 2 is the sectional view of A-A in Fig. 1.
In figure, part 1 is coal gas of converter import, cylinder centered by part 2, and part 3 is coal gas of converter outlet, the membrane wall centered by part 4 in cylinder, the membrane wall centered by part 5 between cylinder and housing, part 6 is joint flange, part 7 is ash exhauster.
Embodiment
As depicted in figs. 1 and 2, housing 8 upper ends, center are provided with coal gas of converter import 1, top, top is provided with central tube 2, upper end, housing side is provided with coal gas of converter outlet 3, described central tube inside is provided with polylith membrane wall 5, and in the middle of inner walls face surrounding and central tube outer wall, be also provided with membrane wall 4, bottom is provided with ash exhauster;
Central tube 2 and urceolus 8 are water wall structure, and the type of attachment of membrane wall adopts independent splicing, and the number of membrane wall is determined according to system layout and heat, and ash exhauster 7 is water-bath or fluidizer;
During work, the coal gas of converter that contains the red particle of uncombusted and dust vertically enters central tube 2 by coal gas of converter import 1, due to the effect of gravitational dust collection, after making that larger particles in coal gas is separated and getting off, the ash exhauster 7 that enters housing bottom by action of gravity is discharged.At coal gas of converter, when central tube down, carry out heat exchange with the membrane wall that is arranged on shell wall side surrounding.Coal gas of converter through interchanger central tube flows along membrane wall upward by the circular channel between inner and outer tubes, discharges after turning back to the top of radiant coolers.
Claims (4)
1. a coal gas of converter cryogenic heat exchanger, it is characterized in that: the central tube of lower openings (2) inserts in housing (8), the upper end, center of central tube is provided with coal gas of converter import (1), upper end, housing side is provided with coal gas of converter outlet (3), between central tube (2) and housing (8), there is circular channel, flue gas is discharged from coal gas of converter outlet (3) by circular channel from coal gas of converter import (1) enters into housing bottom, described central tube inside is provided with membrane wall, and in the middle of inner walls face surrounding and central tube outer wall, be also provided with membrane wall, bottom is provided with ash exhauster (7).
2. coal gas of converter cryogenic heat exchanger as claimed in claim 1, is characterized in that: described central tube and housing are water wall structure.
3. coal gas of converter cryogenic heat exchanger as claimed in claim 1, is characterized in that: described ash exhauster (7) is water-bath or fluidizer.
4. coal gas of converter cryogenic heat exchanger as claimed in claim 1, is characterized in that: described housing (8) is the water wall structure of independent splicing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420171505.XU CN203923256U (en) | 2014-08-04 | 2014-08-04 | A kind of coal gas of converter cryogenic heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420171505.XU CN203923256U (en) | 2014-08-04 | 2014-08-04 | A kind of coal gas of converter cryogenic heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203923256U true CN203923256U (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420171505.XU Active CN203923256U (en) | 2014-08-04 | 2014-08-04 | A kind of coal gas of converter cryogenic heat exchanger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094741A (en) * | 2019-04-30 | 2019-08-06 | 歙县绿源环保设备有限公司 | A kind of consumer waste incineration processing corollary apparatus |
-
2014
- 2014-08-04 CN CN201420171505.XU patent/CN203923256U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094741A (en) * | 2019-04-30 | 2019-08-06 | 歙县绿源环保设备有限公司 | A kind of consumer waste incineration processing corollary apparatus |
| WO2020220675A1 (en) * | 2019-04-30 | 2020-11-05 | 歙县绿源环保设备有限公司 | Domestic garbage incineration treatment supporting device |
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