CN102434875A - Method for treating high-temperature smoke at opening of waste heat boiler of converter - Google Patents
Method for treating high-temperature smoke at opening of waste heat boiler of converter Download PDFInfo
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- CN102434875A CN102434875A CN2011102808230A CN201110280823A CN102434875A CN 102434875 A CN102434875 A CN 102434875A CN 2011102808230 A CN2011102808230 A CN 2011102808230A CN 201110280823 A CN201110280823 A CN 201110280823A CN 102434875 A CN102434875 A CN 102434875A
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- water
- collection case
- waste heat
- heat sink
- converter
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- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention discloses a method for treating high-temperature smoke at an opening of a waste heat boiler of a converter, and the method can be used for well using the high temperature-smoke at the opening of the waste heat boiler of the converter. A movable smoke cover is arranged at the opening of the waste heat boiler of the converter; the movable smoke cover comprises a water inlet header and a water outlet header; a heat absorption device is arranged between the water inlet header and the water outlet header; a heat absorption pipe in the heat absorption device is connected with the water inlet header and the water outlet header respectively through branch pipes; the upper end of the heat absorption device is provided with a plurality of gas spray pipes connected with an external gas source; the nozzles of the gas spray pipes are positioned on the inner side of the upper end of the heat absorption device; water circulation adopts a low-pressure forced circulation mode; circulation cooling water is from a deoxidized water tank; and after a low-pressure circulation water pump conveys the cooling water to the movable smoke cover to absorb the heat, a formed steam and water mixture returns to the deoxidized water tank or is used for other purposes. The method has the advantages that the heat absorption area of the movable smoke cover is increased, the sealing property of the movable smoke cover is improved and the utilization rate of the high-temperature smoke is increased.
Description
Technical field
The present invention relates to the processing method of a kind of converter waste heat boiler fire door place high-temperature flue gas.
Background technology
The operating condition of converter waste heat boiler is periodicity, variation sharp with the smelting process of converter.When bessemerizing, the great amount of high-temperature flue gas flows through waste heat boiler, and the thermic load of waste heat boiler sharply increases; When blowing stopped, the thermic load of waste heat boiler sharply reduced.This thermic load about 30min period of waves (being equivalent to the converter smelting cycle), abominable service condition must exert an influence to the service life of waste heat boiler.At present, the service life of converter waste heat boiler is very short, and the average life span of epimere cooling stack is about 6 years, and the life-span of hypomere cooling stack is 2～3 years, and the service condition of fire door movable gas hood is more abominable, and the life-span had only about 1 year.Accident rate is also very high in the lifetime, must often overhaul, and has both influenced output of steel, influences security of operation again.Therefore, the converter waste heat boiler particularly design of fire door movable gas hood is most important, and it directly influences the ordinary production of converter.As shown in Figure 1, movable gas hood commonly used comprises: water inlet collection case 1, be positioned at the water outlet collection case 2 of water collection case 1 top into and be connected some heat exchanger tubes 3 of water inlet collection case 1 and water outlet collection case 2, the top of water outlet collection case 2 is provided with annular water tank 4, tank 4 interior filled with water.When movable gas hood uses in reality; The top also has an epimere cooling stack 5 cylindraceous; Reduce the utilization rate of flue gas in order to prevent to spill the gap of partial fume between tank 4 and epimere cooling stack 5; In tank 4, be provided with the sealing plate 6 that the cross section is the shape of falling L, an end of sealing plate 6 is positioned at tank 4, and the outer wall of the other end and epimere cooling stack 5 offsets.Above-mentioned movable gas hood adopts the circulation of nature water usually, and its shortcoming is following: a. petticoat pipe and converter bell place clearance control are not tight, causes and leaks out seriously, has influenced the recovery of coal gas; B. petticoat pipe is near fire door, and operating mode is abominable, and heating surface is short.Adopt the reaction of nature water cyclic force slow, relatively poor in blowing initial stage hydrodynamic force, pipe often can not get reliable cooling.Therefore, the service life of movable gas hood is all about 1 year; C. petticoat pipe and fire door section adopt the water seal sealing.When blowing, there is a large amount of lime-ash to fall into the water tank on the movable gas hood, after use a period of time, a large amount of lime-ash have been full of water tank, and movable gas hood can't be gone up and down; D. the drum voltage-stabilizing system moves the undesired frequent fluctuation that causes carburetion system, and the continuous variation of internal pressure stress causes the heat pipe fatigue rupture, and the simultaneity factor pressure oscillation has also influenced the Water Circulation Characteristic in the movable gas hood heat pipe too greatly.
Summary of the invention
Technical problem to be solved by this invention is: the processing method that the converter waste heat boiler fire door place high-temperature flue gas of a kind of good use converter waste heat boiler fire door place high-temperature flue gas is provided.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the processing method of a kind of converter waste heat boiler fire door place high-temperature flue gas is provided with movable gas hood at converter waste heat boiler fire door; This movable gas hood comprises into water collection case and water outlet collection case; Be provided with heat sink between water inlet collection case and the water outlet collection case, heat sink is formed by stacking several annular endothermic tubes, and heat sink integral body is truncated cone-shaped; Weld together through annular round steel between the adjacent endothermic tube; Endothermic tube in the heat sink links to each other with water outlet collection case with water inlet collection case through arm respectively, and the upper end of heat sink is provided with the some air jet pipes that link to each other with extraneous source of the gas, and the spout of air jet pipe is positioned at the inboard, upper end of heat sink; The low force endless form is adopted in the water circulation; Recirculated cooling water is from the deoxygenation water tank, and after the low pressure recycle water pump was delivered to the movable gas hood heat absorption with cooling water, the steam water interface of formation was got back to the deoxygenation water tank again or used it for anything else in addition.
The invention has the beneficial effects as follows: increased movable gas hood endotherm area, improved the sealing property of movable gas hood and improved the utilization rate of high-temperature flue gas.
Description of drawings
Fig. 1 is the structure diagram of the processing method of converter waste heat boiler fire door place high-temperature flue gas in the background technology;
Fig. 2 is the structure chart of the processing method of converter waste heat boiler fire door of the present invention place high-temperature flue gas;
Fig. 3 is the partial enlarged drawing between A place endothermic tube and the round steel among Fig. 2.
Among Fig. 1: 1, water inlet collection case, 2, water outlet collection case, 3, heat exchanger tube, 4, tank, 5, the epimere cooling stack, 6, sealing plate.
Among Fig. 2 to Fig. 3: 1, water inlet collection case, 2, water outlet collection case, 5, the epimere cooling stack, 7, endothermic tube, 8, arm, 9, air jet pipe, 10, round steel.
The specific embodiment
Below in conjunction with accompanying drawing, describe specific embodiments of the present invention in detail.
Like Fig. 2, shown in Figure 3; The processing method of a kind of converter waste heat boiler fire door place high-temperature flue gas is provided with movable gas hood at converter waste heat boiler fire door, and this movable gas hood comprises into water collection case 1 and water outlet collection case 2; Be provided with heat sink between water inlet collection case 1 and the water outlet collection case 2; Heat sink is formed by stacking several annular endothermic tubes 7, and heat sink integral body is truncated cone-shaped, and the endothermic tube 7 in the heat sink links to each other with water outlet collection case 2 through arm 8 and water inlet collection case 1 respectively; The upper end of heat sink is provided with the some air jet pipes 9 that link to each other with extraneous source of the gas, and the spout of air jet pipe 9 is positioned at the inboard, upper end of heat sink.Weld together through annular round steel 10 between the adjacent endothermic tube 7.The low force endless form is adopted in the water circulation; Recirculated cooling water is from the deoxygenation water tank; The low pressure recycle water pump is sent into cooling water the endothermic tube 7 from water inlet collection case 1; Cooling water absorbs the high temperature at converter waste heat boiler fire door places through endothermic tube 7, and the steam water interface of formation, this steam water interface are got back to the deoxygenation water tank from water outlet collection case 2 and the water in the deoxygenation water tank is carried out deoxygenation or used it for anything else in addition; The deoxygenation water tank links to each other with cooling water system in the whole afterheat boiler system, can provide enough cooling waters to supply movable gas hood to use.So both reduced the temperature of converter waste heat boiler fire door, prolonged the service life of waste heat boiler, also saved the energy, reduced production costs, enhanced productivity.Adopt low force water endless form, the water circulation that the assurance system is good prevents and has improved endothermic tube 7 and damaged because of the bad hot-spot that causes that circulates; System's operating pressure is lower, and the petticoat pipe tube wall is reduced by the stress that interior pressure causes greatly; Reduced when movable gas hood and drum composition natural cycle system, because the undesired internal pressure stress alternation fatigue rupture that causes of drum voltage-stabilizing system operation.
Claims (1)
1. the processing method of converter waste heat boiler fire door place high-temperature flue gas; It is characterized in that: at converter waste heat boiler fire door movable gas hood is set, this movable gas hood comprises into water collection case and water outlet collection case, is provided with heat sink between water inlet collection case and the water outlet collection case; Heat sink is formed by stacking several annular endothermic tubes; And heat sink integral body is truncated cone-shaped, welds together through annular round steel between the adjacent endothermic tube, and the endothermic tube in the heat sink links to each other with water outlet collection case with water inlet collection case through arm respectively; The upper end of heat sink is provided with the some air jet pipes that link to each other with extraneous source of the gas; The spout of air jet pipe is positioned at the inboard, upper end of heat sink, and the low force endless form is adopted in the water circulation, and recirculated cooling water is from the deoxygenation water tank; After the low pressure recycle water pump was delivered to the movable gas hood heat absorption with cooling water, the steam water interface of formation was got back to the deoxygenation water tank again or is used it for anything else in addition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102808230A CN102434875A (en) | 2011-09-21 | 2011-09-21 | Method for treating high-temperature smoke at opening of waste heat boiler of converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102808230A CN102434875A (en) | 2011-09-21 | 2011-09-21 | Method for treating high-temperature smoke at opening of waste heat boiler of converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102434875A true CN102434875A (en) | 2012-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2011102808230A Pending CN102434875A (en) | 2011-09-21 | 2011-09-21 | Method for treating high-temperature smoke at opening of waste heat boiler of converter |
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| Country | Link |
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| CN (1) | CN102434875A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110331250A (en) * | 2019-07-17 | 2019-10-15 | 联峰钢铁（张家港）有限公司 | A kind of Converter Residual Heat Boiler movable gas hood |
| CN112662837A (en) * | 2020-12-08 | 2021-04-16 | 苏州海陆重工股份有限公司 | Skirt cover in converter waste heat boiler |
| CN114540572A (en) * | 2022-02-25 | 2022-05-27 | 重庆钢铁股份有限公司 | Converter waste heat boiler steam self-using system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1519530A (en) * | 2003-01-25 | 2004-08-11 | 徐宝安 | Equipment of water box in condensator contaning many media for heat recovery as well as installation method |
| CN201059897Y (en) * | 2007-06-08 | 2008-05-14 | 王云龙 | Vacuum phase inversion heat device |
| CN201103886Y (en) * | 2007-11-28 | 2008-08-20 | 中国恩菲工程技术有限公司 | Exhaust-heating boiler |
| US20090272339A1 (en) * | 2004-10-27 | 2009-11-05 | Andritz Oy | Cooling system for ports in a boiler |
| CN101639213A (en) * | 2009-09-03 | 2010-02-03 | 杨益明 | Row tube type normal-pressure coal economizer |
-
2011
- 2011-09-21 CN CN2011102808230A patent/CN102434875A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1519530A (en) * | 2003-01-25 | 2004-08-11 | 徐宝安 | Equipment of water box in condensator contaning many media for heat recovery as well as installation method |
| US20090272339A1 (en) * | 2004-10-27 | 2009-11-05 | Andritz Oy | Cooling system for ports in a boiler |
| CN201059897Y (en) * | 2007-06-08 | 2008-05-14 | 王云龙 | Vacuum phase inversion heat device |
| CN201103886Y (en) * | 2007-11-28 | 2008-08-20 | 中国恩菲工程技术有限公司 | Exhaust-heating boiler |
| CN101639213A (en) * | 2009-09-03 | 2010-02-03 | 杨益明 | Row tube type normal-pressure coal economizer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110331250A (en) * | 2019-07-17 | 2019-10-15 | 联峰钢铁（张家港）有限公司 | A kind of Converter Residual Heat Boiler movable gas hood |
| CN110331250B (en) * | 2019-07-17 | 2024-04-16 | 联峰钢铁（张家港）有限公司 | Movable smoke hood for converter waste heat boiler |
| CN112662837A (en) * | 2020-12-08 | 2021-04-16 | 苏州海陆重工股份有限公司 | Skirt cover in converter waste heat boiler |
| CN114540572A (en) * | 2022-02-25 | 2022-05-27 | 重庆钢铁股份有限公司 | Converter waste heat boiler steam self-using system and method |
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Application publication date: 20120502 |