CN202530110U - Device for purifying and recovering primary high-temperature flue gas of converters by directly calcining lime - Google Patents
Device for purifying and recovering primary high-temperature flue gas of converters by directly calcining lime Download PDFInfo
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- CN202530110U CN202530110U CN 201220136080 CN201220136080U CN202530110U CN 202530110 U CN202530110 U CN 202530110U CN 201220136080 CN201220136080 CN 201220136080 CN 201220136080 U CN201220136080 U CN 201220136080U CN 202530110 U CN202530110 U CN 202530110U
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- flue gas
- housing
- converter
- cooling
- limestone kiln
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Abstract
The utility model provides a device for purifying and recovering a primary high-temperature flue gas of converters by directly calcining lime. The device comprises a first converter and a second converter, wherein the first converter is communicated with the top of a shell of a first calcining section; the lower end of the shell of the first calcining section is connected with a shell of a first cooling section; the second converter is communicated with the top of a shell of a second calcining section; the lower end of the shell of the second calcining section is connected with a shell of a second cooling section; the shell of the first cooling section is communicated with the shell of the second cooling section through a ventilating pipe; and the shell of the first calcining section and the shell of the second calcining section are communicated with a feeding pipe. With the adoption of the device, the lime can be calcined by using the waste heat of the high-temperature flue gas of the converters, so that the waste heat of the primary high-temperature flue gas of the converters is recovered, a water treatment system is not needed, the running cost of equipment is greatly reduced, no pollution is caused to the environment, the lime calcining process can be performed continuously, and the production efficiency is high.
Description
Technical field
The utility model relates to a kind of converter flue gas waste heat recovery apparatus, and the direct lime kilning of high-temperature flue gas of specifically a kind of converter is realized purification recovery device.
Background technology
The purification of a flue gas of converter current is reclaimed and is adopted dual mode.A kind of is the wet purification recovery system, and this mode adopts saturated cooling, and high-temperature flue gas is through " two civilian towers ", and temperature is entered the primary air fan room and reclaimed or diffuse after being cooled to about 70 ℃ by 800-1000 ℃ of gasification cooling flue outlet; Another kind is the dry cleaning recovery system; This mode adopts transpiration cooling; High-temperature flue gas is through evaporative cooler, electric precipitator, gas cooler, and temperature is selected to reclaim or diffuse by switching station after being cooled to about 70 ℃ by 800-1000 ℃ of gasification cooling flue outlet.Above-mentioned dual mode; Converter gas reduces to that about 70 ℃ heat is absorbed by water through saturated or transpiration cooling and further directly cooling from 800 ℃; This part heat runs off fully and diffuses; Therefore all will dispose huge water treatment system in this dual mode, equipment running cost is higher, and can pollute environment.
The utility model content
The purpose of the utility model provides the direct lime kilning of high-temperature flue gas of a kind of converter and realizes purification recovery device; It can utilize the waste heat of converter high-temperature flue gas that lime is calcined; Making high-temperature flue gas of converter realize purifying reclaims; Water treatment system need be set, significantly reduce the running cost of equipment, and environment is not polluted.
The utility model is realized through following technical scheme for realizing above-mentioned purpose: comprise converter, converter is connected with gasification cooling flue through movable gas hood; Gasification cooling flue is connected with regenerator through recovery channel, and regenerator is connected with an end of inlet pipe, and the other end of inlet pipe is connected with the flue gas distribution piping; The flue gas distribution piping is mounted in the circulating line of housing outer wall bottom, limestone kiln, and the limestone kiln case top is provided with opening for feed, and the limestone kiln housing bottom is provided with discharge port; The discharge port place is provided with discharge valve, and the ring smoke collection tube is installed on housing outer wall top, limestone kiln, and enclosure interior center, limestone kiln is provided with orienting lug; The orienting lug border is connected with the limestone kiln housing with the duct set road through air supply line; Air supply line and duct set road sidewall horizontal direction are all offered some through holes, and the air supply line inner chamber is communicated with the flue gas distribution piping, and duct set road inner chamber is communicated with the flue gas collection tube; The flue gas collection tube is connected with an end that purifies pipeline, purifies on the pipeline gravitational precipitator, sack cleaner and induced draft fan are installed.Housing bottom outer wall border, limestone kiln is provided with cooling jacket; Cooling jacket is connected with cooling blower through cold air duct; The cold wind valve is installed on the cold air duct, the cold wind bleeder is set on the cold air duct between cold wind valve and the cooling blower, cold wind is installed on the cold wind bleeder is diffused valve.On the cold air duct between cold wind valve and the cooling jacket nitrogen pipeline is set, nitrogen pipeline is connected with the equipment of making nitrogen, and the nitrogen valve is installed on the nitrogen pipeline.Said limestone kiln housing has round shape sintering stage housing; Sintering stage housing upper end is connected with the larger diameter end of truncated cone shape cloth piece housing; Sintering stage housing lower end is connected with the larger diameter end of truncated cone shape cooling section housing, and cloth piece housing top is provided with opening for feed, and cooling section housing bottom is provided with discharge port; The flue gas distribution piping is installed in sintering stage housing outer wall lower end, and the flue gas collection tube is installed in sintering stage housing outer wall upper end.The orienting lug top is conical, and the angle [alpha] of circular cone is 85 °-95 °.
The advantage of the utility model is: can utilize the waste heat of converter high-temperature flue gas that lime is calcined, make high-temperature flue gas of converter realize purifying and reclaim, water treatment system need be set; Significantly reduced the running cost of equipment, and environment is not polluted, calcination process does not receive the influence of converter working order; In Converter Oxigen Blowing phase and non-oxygen blast phase, all can calcine Wingdale, flue gas can access rough purification in the calcination process, has reduced the dust content when flue gas gets into fly-ash separator; Help reducing the dedusting resistance, improve efficiency of dust collection, two-step filter is set effectively prevents sack cleaner paste bag; Can in the limestone kiln, accomplish process of cooling behind the lime calcining; Save the expense of setting up independent cooling system, and reduced operation steps, improved production efficiency; In the limestone kiln, feed nitrogen in converter smelting phase and the non-smelting of converter transition period phase, the security of lime calcining is higher; Limestone kiln cloth, rewinding are all comparatively convenient; Feeding-passage is difficult for obstruction etc.
Description of drawings
Fig. 1 is the structural representation of the utility model; Fig. 2 is that the A-A of Fig. 1 analyses and observe the structure for amplifying synoptic diagram; Fig. 3 is an I portion structure for amplifying synoptic diagram among Fig. 1.
Embodiment
The direct lime kilning of high-temperature flue gas of the described converter of the utility model is realized purification recovery device, comprises converter 1, and converter 1 is connected with gasification cooling flue 2 through movable gas hood 36; Gasification cooling flue 2 is connected with regenerator 5 through recovery channel 4, and regenerator 5 is connected with an end of inlet pipe 3, and the other end of inlet pipe 3 is connected with flue gas distribution piping 31; Flue gas distribution piping 31 is mounted in the circulating line of limestone kiln housing 7 outer wall bottoms; Housing 7 tops in limestone kiln are provided with opening for feed 8, and housing 7 bottoms in limestone kiln are provided with discharge port 28, and discharge port 28 places are provided with discharge valve 12; Ring smoke collection tube 6 is installed on housing 7 outer wall tops in limestone kiln; Housing 7 inside center in limestone kiln are provided with orienting lug 29, and orienting lug 29 borders are connected with limestone kiln housing 7 with duct set road 9 through air supply line 30, and air supply line 30 is all offered some through holes 32 with duct set road 9 sidewall horizontal directions; Air supply line 30 inner chambers are communicated with flue gas distribution piping 31; Duct set road 9 inner chambers are communicated with flue gas collection tube 6, and flue gas collection tube 6 is connected with an end that purifies pipeline 10, purify gravitational precipitator 11, sack cleaner 14 and induced draft fan 15 are installed on the pipeline 10.In the converter smelting phase, Wingdale to be inserted in the limestone kiln housing 7 through opening for feed 8, converter 1 oxygen blast is smelted; Movable gas hood 36 descends; The high-temperature flue gas of converter 1 discharging gets into cooling stack 2, and flue gas gets into regenerator 5 through recovery channel 4 after gasification cooling flue 2 tentatively is cooled to 1000-1100 ℃; Regenerator 5 stores the part of smoke heat; Temperature-stable when making flue gas get into the limestone kiln is at 950-1000 ℃, and flue gas gets into each air supply line 30 through inlet pipe 3 and flue gas distribution piping 31, and flue gas distribution piping 31 can guarantee that the air feed pressure in each air supply line 30 equates; The through hole 32 entering limestone kiln housings 7 of flue gas from the air supply line 30 are calcined the Wingdales in the limestone kiln housing 7 through the temperature of flue gas.Flue gas and Wingdale carry out heat exchange in the calcination process, and flue-gas temperature reduces, and flue gas in the Wingdale space through out-of-date, the most of dust that wherein carries can be stayed in the limestone kiln housing 7, realizes the rough purification to flue gas.Flue gas after the cooling gets into duct set road 9 through the through hole on the duct set road 9 32; Flue gas collection tube 6 imports after with the fume centralized in each duct set road 9 and purifies pipeline 10, and through hole 32 is arranged on air supply line 30 can effectively prevent the clogged up with material through hole 32 in the limestone kiln with duct set road 9 sidewall horizontal directions.After flue gas get into to purify pipeline 10, temperature was reduced to 90-100 ℃, and the induced draft fan 15 that purifies on the pipeline 10 is delivered to dust removing units with flue gas, and flue gas diffuses or reclaims after the two-stage dedusting.The utility model utilizes the waste heat of converter high-temperature flue gas that lime is calcined, and makes high-temperature flue gas of converter realize purifying and reclaims, and water treatment system need be set, and has significantly reduced the running cost of equipment, and environment is not polluted.Because sack cleaner needs the strict control of flue-gas temperature in use, directly feed the sack cleaner dedusting if will purify in the pipeline 90-100 ℃ flue gas, under the moist situation of surrounding enviroment, be easy to generate a large amount of steam, cause fly-ash separator to stick with paste bag.Therefore; Two-step filter must be set the flue gas that purifies in the pipeline 10 is carried out dedusting, the two-stage dust removing units is made up of gravitational precipitator 11 and sack cleaner 14, and flue gas is introduced into gravitational precipitator 11 and removes remaining big dust particle in the flue gas; Flue gas can further be cooled to 70 ℃ in gravitational precipitator 11; 70 ℃ flue gas gets into sack cleaner 14 and carries out meticulous dedusting, in sack cleaner 14, can not produce steam, can effectively prevent the phenomenon that bag appears sticking with paste in sack cleaner 14.In the non-smelting of the converter phase; Converter 1 stops oxygen blast; Movable gas hood 36 rises, and cooling stack 2 sucks a large amount of air, is heated to 900-950 ℃ by the heat-storing material in the regenerator 5 during air admission regenerator 5; Air admission limestone kiln housing 7 after the heating continues calcined limestone, guarantees that the calcination process of Wingdale can carry out continuously.Heat-storing material composition in the regenerator 5 is: by weight percentage, and NaCl 18-22%, KCl 18-22%, MgCl
256-64%.Lime behind the sintering is discharged from discharge port 28, is delivered to cooling system and cools off.
The utility model is accomplished cooling in order to make lime in limestone kiln housing 7; Can cooling jacket 27 be set housing 7 bottom outer wall borders in the limestone kiln; Cooling jacket 27 is connected with cooling blower 21 through cold air duct 22; Cold wind valve 20 is installed on the cold air duct 22, on the cold air duct 22 between cold wind valve 20 and the cooling blower 21 cold wind bleeder 24 is set, cold wind is installed on the cold wind bleeder 24 is diffused valve 23.In the converter smelting phase, cold wind valve 20 is closed, and cold wind diffuses valve 23 and opens, and cooling blower 21 is taken out and drawn air and diffused by cold wind bleeder 24; In the non-smelting of the converter phase, cold wind valve 20 is opened, and cold wind diffuses valve 23 and closes, and cooling blower 21 is taken out and drawn air by cold air duct 22 entering cooling jackets 27, and the lime after the calcining of limestone kiln housing 7 bottoms is cooled off, and cooled lime is discharged by discharge port 28.Adopt this structure to save the expense of setting up independent cooling system, and reduced operation steps, improved production efficiency for enterprise.
The utility model is for fear of the gathering at converter smelting phase and the non-smelting of converter transition period phase generation inflammable gas; Can on the cold air duct 22 between cold wind valve 20 and the cooling jacket 27, nitrogen pipeline 26 be set; Nitrogen pipeline 26 is connected with the equipment of making nitrogen 13, and nitrogen valve 25 is installed on the nitrogen pipeline 26.In the latter stage of converter smelting phase, open nitrogen valve 25, the nitrogen that the equipment of making nitrogen is generated imports limestone kiln housing 7; Lime to after the calcining of limestone kiln housing 7 bottoms cools off; The non-smelting phase of converter again by the cooling air cool lime, and is closed nitrogen valve 25 after beginning for some time; Equally,, also need open nitrogen valve 25 in the latter stage of the non-smelting of converter phase, by the nitrogen cool lime, and after the converter smelting phase begins back for some time, again by the cooling air cool lime.Use nitrogen that lime is cooled off the gathering that can effectively prevent inflammable gas in converter smelting phase and the non-smelting of converter transition period phase, improve the security of lime calcining.
The utility model is in order to make limestone kiln housing 7 cloth and discharge easily; Can adopt following structure: said limestone kiln housing 7 has round shape sintering stage housing 33; Sintering stage housing 33 upper ends are connected with the larger diameter end of truncated cone shape cloth piece housing 34; Sintering stage housing 33 lower ends are connected with the larger diameter end of truncated cone shape cooling section housing 35, and cloth piece housing 34 tops are provided with opening for feed 8, and cooling section housing 35 bottoms are provided with discharge port 28; Flue gas distribution piping 31 is installed in sintering stage housing 33 outer wall lower ends, and flue gas collection tube 6 is installed in sintering stage housing 33 outer walls upper end.After Wingdale gets into cloth piece housings 34 from opening for feed 8, because diameter of the housing increases gradually, can mutual extrusion between the Wingdale, Wingdale is directed to after piece 29 guiding can filling to sintering stage housing 33 in uniformly; Lime behind the sintering is assembled in cooling section housing 35, and the truncated cone shape sidewall of cooling section housing 35 can be derived lime when discharge easily, no dead angle in housing during discharge.
The said orienting lug 29 of the utility model is used for Wingdale gathering Wingdale to limestone kiln housing 7 border uniform distribution in order to prevent orienting lug 29 tops, can be set to taper shape in orienting lug 29 tops, and the angle [alpha] of circular cone is 85 °-95 °.If cone angle is greater than 95 °, then orienting lug 29 tops still have the possibility of gathering Wingdale, and Wingdale accumulates in orienting lug 29 tops and can not get effective calcining, can form caking after gathering for a long time, stop up feeding-passage; If the angle of circular cone is less than 85 °, then the circular cone tip is meticulous, and easy abrasion, the cone tip after the wearing and tearing become times, and gathers Wingdale equally easily.
Claims (5)
1. the direct lime kilning of high-temperature flue gas of converter is realized purification recovery device; Comprise converter (1); Converter (1) is connected with gasification cooling flue (2) through movable gas hood (36); Gasification cooling flue (2) is connected with regenerator (5) through recovery channel (4), and regenerator (5) is connected with an end of inlet pipe (3), and the other end of inlet pipe (3) is connected with flue gas distribution piping (31); Flue gas distribution piping (31) is mounted in the circulating line of limestone kiln housing (7) outer wall bottom; Limestone kiln housing (7) top is provided with opening for feed (8), and limestone kiln housing (7) bottom is provided with discharge port (28), and discharge port (28) locates to be provided with discharge valve (12); Ring smoke collection tube (6) is installed on limestone kiln housing (7) outer wall top; Limestone kiln housing (7) inside center is provided with orienting lug (29), and orienting lug (29) border is connected with limestone kiln housing (7) with duct set road (9) through air supply line (30), and air supply line (30) and duct set road (9) sidewall horizontal direction are all offered some through holes (32); Air supply line (30) inner chamber is communicated with flue gas distribution piping (31); Duct set road (9) inner chamber is communicated with flue gas collection tube (6), and flue gas collection tube (6) is connected with an end that purifies pipeline (10), purifies pipeline (10) and goes up installation gravitational precipitator (11), sack cleaner (14) and induced draft fan (15).
2. the direct lime kilning of high-temperature flue gas of converter according to claim 1 is realized purification recovery device; It is characterized in that: limestone kiln housing (7) bottom outer wall border is provided with cooling jacket (27); Cooling jacket (27) is connected with cooling blower (21) through cold air duct (22); Cold air duct (22) is gone up cold wind valve (20) is installed; On the cold air duct (22) between cold wind valve (20) and the cooling blower (21) cold wind bleeder (24) is set, cold wind bleeder (24) is gone up installation cold wind and is diffused valve (23).
3. the direct lime kilning of high-temperature flue gas of converter according to claim 2 is realized purification recovery device; It is characterized in that: on the cold air duct (22) between cold wind valve (20) and the cooling jacket (27) nitrogen pipeline (26) is set; Nitrogen pipeline (26) is connected with the equipment of making nitrogen (13), and nitrogen pipeline (26) is gone up nitrogen valve (25) is installed.
4. the direct lime kilning of high-temperature flue gas of converter according to claim 1 is realized purification recovery device; It is characterized in that: said limestone kiln housing (7) has round shape sintering stage housing (33); Sintering stage housing (33) upper end is connected with the larger diameter end of truncated cone shape cloth piece housing (34); Sintering stage housing (33) lower end is connected with the larger diameter end of truncated cone shape cooling section housing (35); Cloth piece housing (34) top is provided with opening for feed (8); Cooling section housing (35) bottom is provided with discharge port (28), and flue gas distribution piping (31) is installed in sintering stage housing (33) outer wall lower end, and flue gas collection tube (6) is installed in sintering stage housing (33) outer wall upper end.
5. the direct lime kilning of high-temperature flue gas of converter according to claim 1 is realized purification recovery device, it is characterized in that: orienting lug (29) top is for conical, and the angle [alpha] of circular cone is 85 °-95 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220136080 CN202530110U (en) | 2012-03-31 | 2012-03-31 | Device for purifying and recovering primary high-temperature flue gas of converters by directly calcining lime |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220136080 CN202530110U (en) | 2012-03-31 | 2012-03-31 | Device for purifying and recovering primary high-temperature flue gas of converters by directly calcining lime |
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| Publication Number | Publication Date |
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| CN202530110U true CN202530110U (en) | 2012-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220136080 Withdrawn - After Issue CN202530110U (en) | 2012-03-31 | 2012-03-31 | Device for purifying and recovering primary high-temperature flue gas of converters by directly calcining lime |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618692A (en) * | 2012-03-31 | 2012-08-01 | 济钢集团国际工程技术有限公司 | Purification and recovery plant realized by means of directly calcining lime by aid of primary high-temperature flue gas of converter |
| CN114702254A (en) * | 2022-03-09 | 2022-07-05 | 武汉科技大学 | Method for producing lime powder by calcining in evaporative cooling flue of metallurgical furnace |
-
2012
- 2012-03-31 CN CN 201220136080 patent/CN202530110U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618692A (en) * | 2012-03-31 | 2012-08-01 | 济钢集团国际工程技术有限公司 | Purification and recovery plant realized by means of directly calcining lime by aid of primary high-temperature flue gas of converter |
| CN102618692B (en) * | 2012-03-31 | 2013-10-09 | 济钢集团国际工程技术有限公司 | Purification and recovery plant realized by means of directly calcining lime by aid of primary high-temperature flue gas of converter |
| CN114702254A (en) * | 2022-03-09 | 2022-07-05 | 武汉科技大学 | Method for producing lime powder by calcining in evaporative cooling flue of metallurgical furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121114 Effective date of abandoning: 20131009 |
|
| RGAV | Abandon patent right to avoid regrant |