CN201665688U - Recovery device of steam in steelmaking with revolving furnace - Google Patents
Recovery device of steam in steelmaking with revolving furnace Download PDFInfo
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- CN201665688U CN201665688U CN201020132521XU CN201020132521U CN201665688U CN 201665688 U CN201665688 U CN 201665688U CN 201020132521X U CN201020132521X U CN 201020132521XU CN 201020132521 U CN201020132521 U CN 201020132521U CN 201665688 U CN201665688 U CN 201665688U
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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
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Abstract
The utility model relates to a recovery device of steam in steelmaking with a revolving furnace, which belongs to the technical field of the heat recovery equipment of steam in steelmaking and aims to solve the problems of intermittent and fluctuating steam supply due to the intermittency and fluctuation of the revolving furnace so as to finally obtain the high-quality steam with the stable flow and pressure. In the technical scheme, the recovery device comprises a heat accumulator, a steam superheater, a steam header, a flow meter, a testing instrument and various valves, wherein the inlet pipeline of the heat accumulator is respectively connected with an evaporation cooling steam header of a revolving furnace and an adjusting exhaust pipeline of a power plant, the outlet pipeline of the heat accumulator is respectively connected with the steam superheater and the steam header, the output pipeline of the steam superheater is connected with a vacuum refining steam pipeline, and the output pipeline of the steam header is connected with an external steam pipeline. The utility model has the advantages that: when the steam flow in the output pipeline is high, the heat accumulator can store steam, and when the steam flow in the output pipeline is low, the steam stored in the heat accumulator can be released, thereby always maintaining the slow change of the steam flow in the pipeline and stabilizing the steam pressure.
Description
Technical field
The utility model relates to a kind of recycle device of the steelwork converter vaporization saturation steam that cooled flue gas produced, and belongs to steel-making steam heat recovery system technical field.
Background technology
Fire door produces a large amount of high-temperature flue gas during converter steelmaking, and converter vapourization cooling system is to utilize gasification cooling flue to replace former water-cooled flue, to reach the purpose of heat recovery and economize on electricity, water saving.This system utilizes the gasification cooling flue heat to produce steam, uses the vapour point with being fed to after the intermediate steam recycling again.
The low pressure steam that reclaims can be incorporated plant area's steam outer net into and be used for generating, heating or life and use vapour, and in recent years, domestic each iron and steel enterprise also attempts utilizing the steam supply vacuum refining system.But the flue gas that fire door takes place during owing to converter steelmaking is periodically variable, is unsettled, and consequent steam steam flow and pressure change are also very big, and this brings great difficulty just for effective utilization of steam.For this reason, the converter steam of a lot of enterprises only is used for heating and lives with places not high to vapor pressure, traffic requirement such as vapour, and most of steam has all been wasted.If can't resolve, even incorporate outer net into and bring very big impact also can for the steam outer net because the steam supply that intermittence that converter is produced and fluctuation are brought is interrupted and fluctuation problem, and steam just can not be used for vacuum refining system.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of can the solution owing to steam supply interruption that intermittence that converter is produced and fluctuation are brought and fluctuation problem, finally obtain the converter steelmaking vapor-recovery unit of the high-quality steam of regime flow and pressure.
The technical scheme that solves the problems of the technologies described above is:
A kind of converter steelmaking vapor-recovery unit, it is made up of thermophore, vapor superheater, steam distributor, under meter, measuring instrument and various valve, the inlet duct of thermophore is adjusted pump-line with the female pipe of converter vaporization cooling steam with power plant respectively by various valves, under meter and is connected, the outlet conduit of thermophore connects vapor superheater and steam distributor respectively by various valves, measuring instrument again, the output channel of vapor superheater connects the vacuum refinement steam-pipe, and the output channel of sub-cylinder connects the external steam pipeline.
Above-mentioned converter steelmaking vapor-recovery unit, gate valve, variable valve, vacuum breaker, under meter are installed on the connecting tube of described thermophore, thermophore has diffuse channel, electric check valve is installed on the pipeline and diffuses sound damper, thermophore has blow-off line and moisturizing pipeline, be connected to ball valve and electric check valve on the blow-off line, be connected to gate valve, electric check valve and vacuum breaker on the moisturizing pipeline, pressure, temperature sensor and equalizing reservoir also are installed on the thermophore.
Above-mentioned converter steelmaking vapor-recovery unit, be connected to flange cut-off valve, variable valve on the inlet duct of described vapor superheater and the outlet conduit respectively, vapor superheater possesses wash water valve and pipeline, vapor superheater also is connected with gas line, and the flange cut-off valve and the fow-through orifice of control gas flow arranged on the pipeline.
Above-mentioned converter steelmaking vapor-recovery unit, the inlet duct of described steam distributor is connected to ball valve, vacuum breaker, variable valve, and outlet conduit is connected to fow-through orifice, variable valve, and sub-cylinder also has wash water valve and blow-off line.
Above-mentioned converter steelmaking vapor-recovery unit, described thermophore, vapor superheater, steam distributor all are equipped with safety valve.
Above-mentioned converter steelmaking vapor-recovery unit, described delivering in vacuum refinement steam-pipe or the external steam pipeline has variable valve and fow-through orifice, and the control end of variable valve connects the signal output part of PLC.
Advantage of the present utility model is: steam is introduced into thermophore, when steam flow is big in the delivery conduit, thermophore can store steam as thermal energy storage device in thermophore, steam flow hour in delivery conduit, the steam that stores in the thermophore can discharge, steam flow in the pipeline is slowly changed, stablize vapor pressure; In the pipeline that is transported to the vacuum refinement steam-pipe, add vapor superheater, can be steam increasing temperature and pressure, impurity screening, carbonated drink is separated, finally obtain meeting the steam of vacuum refining process requirement; When delivery of steam arrives vacuum refinement steam-pipe or external steam pipeline, adopt pid algorithm regulating and controlling valve opening, guaranteed the continual and steady of delivery of steam, make its flow and pressure all meet the demands.Considerable benefit of the present utility model: the unsettled unnecessary saturation steam that it produces converter steelmaking obtains reclaiming, and uses for generating or vacuum refinement, is that modernization is born and can be made steel the important component part of notion.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Mark is as follows among the figure: thermophore 1, diffuse sound damper 2, vapor superheater 3, steam distributor 4, gate valve 5, vacuum breaker 6, ball valve 7, variable valve 8, electric check valve 9, under meter 10, fow-through orifice 11, safety valve 12, electric gate valve 13, flange cut-off valve 14, wash water valve 15, divide drum 16, the female pipe of converter vaporization cooling steam A, power plant adjusts pump-line B, blow-off line C, moisturizing pipeline D, vacuum refinement steam-pipe E, external steam pipeline F, gas line G, coking coal pipeline H, the pipe connection point O of top and the bottom among the figure.
Embodiment
Principle of work of the present utility model is: the smelting cycle of the every stove steel of converter steelmaking is about 30～40 minutes, smelting mid-term, reaction in furnace is vigorous, the coal gas that produces is higher, the steam that evaporated cooling system produced is more, at this moment a large amount of steam input thermophore are the heating of the water in the thermophore, store with the form of heat energy; In the early stage and the later stage of converter smelting, reaction in furnace is slower, the coal gas that produces is less, the steam that evaporated cooling system produced is less, at this moment the high temperature saturation water in the thermophore flashes to steam rapidly, and in the input steam distributor, vapor pressure and flow that steam distributor is supplied with in pipeline are constant, and when steam is delivered to vacuum refining system or outer net, by adjusting control valve, adopt the PID control method to come the by-pass valve control aperture, further guaranteed the flow and the pressure of steam, so just can not cause the steam fluctuation, damage pipeline and equipment.By this device, the steam that converter steelmaking produced both can be used for vacuum refining system to be used, and can deliver to steam pipe system again outward and be used for generating or other life vapour.
Show among the figure, concrete structure of the present utility model is: in thermophore 1, thermophore 1 is connected respectively to vapor superheater 3 that goes toward the vacuum refining system direction and the steam distributor 4 that goes toward outside steam-pipe F by various valves, measuring instrument, pipeline to the female pipe of converter vaporization cooling steam A again by various valves, under meter and pipe connection.Thermophore 1 is a kind of heat energy storage device, and its inlet duct links to each other with female pipe of converter vaporization cooling steam and the adjustment pump-line B of power plant, and equipment such as gate valve 5, variable valve 8, vacuum breaker 6, under meter 10 are installed on the pipeline.Thermophore 1 itself has diffuse channel, prevents that thermophore 1 internal pressure is excessive, safety valve 12 is installed on the pipeline and diffuses sound damper 2.Thermophore 1 has blow-off line C and moisturizing pipeline D in addition, is connected to ball valve 7 and electric check valve 9 on the blow-off line C, is connected to gate valve 5, electric check valve 9 and vacuum breaker 6 on the moisturizing pipeline D.Pressure, temperature sensor and equalizing reservoir are installed on the thermophore 1, are used for control and diffuse valve, wash water valve 15 and moisturizing valve.Whole thermophore 1 has been realized moisturizing, blowdown, the full automatic control of diffusing.Vapor superheater 3 is a kind of suite of equipment, support equipments such as the clean device of filter, heating furnace, mixing blower fan, fan, combustion chamber are contained in its inside, its inlet duct is connected to flange cut-off valve 14, variable valve 8 etc., be connected to flange cut-off valve 14 and variable valve 8 on the outlet conduit, itself possess wash water valve 15 and pipeline.The combustion chamber also is connected with gas line G in addition, and flange cut-off valve 14 and fow-through orifice 11 control gas flows are arranged on the pipeline.The inlet duct of steam distributor 4 is connected to ball valve 7, vacuum breaker 6, variable valve 8, and outlet conduit is connected to fow-through orifice 11, variable valve 8, and itself also has wash water valve 15 and blow-off line.Thermophore 1, vapor superheater 3, steam distributor 4 all are equipped with safety valve 12, guarantee that container pressure is stable.Steam flow of the present utility model is implemented control by PLC by variable valve 8, be installed in the actual steam flux values that the fow-through orifice 11 behind the variable valve 8 records, compare with set(ting)value as reverse feedback, calculate the topworks of back output regulating and controlling valve 8 through the PID function of PLC, make the suitable on request aperture of variable valve 8, guarantee that steam flow is stable.
Show among the figure, working process of the present utility model is: under the equipment normal operation, among the female pipe of the converter vaporization cooling steam A, low-pressure steam enters thermophore 1 along swing check valve 6, gate valve 5, variable valve 8, gate valve 5, under meter 10, gate valve 5, vacuum breaker 6, two branch drums 16 from thermophore 1 top successively.Also through undue drum 16, deliver to the pipeline through swing check valve 6, gate valve 5, under meter 10 from 16 outlets of minute drum during steam output, a steam-pipe leads to vacuum refinement steam-pipe E, and a pipeline leads to external steam pipeline F.Divide drum 16 also to play a part insulation and buffering steam flow rate.When thermophore 1 pressure fluctuating in inner is big, need carry the steam of a part of regime flow from other steam-pipe, to reach the effect of thermophore 1 heat-insulation pressure keeping, do not need generally speaking.Show among the figure that the steam of adjusting from the power station enters into thermophore 1 from the side along the adjustment pump-line B of power plant, vacuum breaker 6, gate valve 5, fow-through orifice 11, gate valve 5, variable valve 8, gate valve 5, under meter 10, gate valve 5, swing check valve 6 successively.When thermophore 1 fault maybe needed to overhaul, steam can be directly passes through from two gate valves 5 of Fig. 1 top.When thermophore 1 internal pressure surpassed safety valve 12 set(ting)values more greatly, safety valve 12 was opened automatically, diffuses steam.When internal pressure sensor detects pressure and arrives alarming value too greatly, then open the electric check valve 9 that diffuses pipeline automatically, steam is diffused fast in a large number, meet the requirements up to pressure.Equalizing reservoir on being installed in thermophore 1 detect in the thermophore 1 water because and be converted into steam output when causing liquid level to drop to set(ting)value, automatically open electric check valve 9, desalination among the moisturizing pipeline D, deaerated water are through gate valve 5, motorized valve 9, gate valve 5, vacuum breaker 6 enter thermophore 1, meet the demands up to liquid level.The blowdown of thermophore 1 is regularly carried out, and is undertaken by blow-off line C, opens ball valve 7 during blowdown and electric check valve 9 gets final product.
Vapor superheater 3 is in the mode of heat exchange, utilize its combustion chambers burn mixed gas, saturated-steam temperature is heated to 220-450 ℃ becomes superheated vapour, improve steam utilization, the back that meets the demands enters vacuum refinement steam-pipe E by flange cut-off valve 14, variable valve 8.The pipeline structure of steam distributor 4 repeats no more as shown in FIG..Need to prove that the user can increase thermophore quantity as required, the use of being incorporated into the power networks is so that steam flow is balanced as far as possible.
Claims (6)
1. converter steelmaking vapor-recovery unit, it is characterized in that: it is by thermophore [1], vapor superheater [3], steam distributor [4], under meter, measuring instrument and various valve are formed, the inlet duct of thermophore [1] is by various valves, under meter is adjusted pump-line B with the female pipe of converter vaporization cooling steam A with power plant respectively and is connected, the outlet conduit of thermophore [1] is again by various valves, measuring instrument connects vapor superheater [3] and steam distributor [4] respectively, the output channel of vapor superheater [3] connects vacuum refinement steam-pipe E, and the output channel of sub-cylinder [4] connects external steam pipeline F.
2. converter steelmaking vapor-recovery unit according to claim 1, it is characterized in that: gate valve [5] is installed on the connecting tube of described thermophore [1], variable valve [8], vacuum breaker [6], under meter [10], thermophore [1] has diffuse channel, electric check valve [9] is installed on the pipeline and diffuses sound damper [2], thermophore [1] has blow-off line C and moisturizing pipeline D, be connected to ball valve [7] and electric check valve [9] on the blow-off line C, be connected to gate valve [5] on the moisturizing pipeline D, electric check valve [9] and vacuum breaker [6], thermophore also is equipped with pressure on [1], temperature sensor and equalizing reservoir.
3. converter steelmaking vapor-recovery unit according to claim 2, it is characterized in that: be connected to flange cut-off valve [14], variable valve [8] on the inlet duct of described vapor superheater [3] and the outlet conduit respectively, vapor superheater [3] possesses wash water valve [15] and pipeline, vapor superheater [3] also is connected with gas line G, and the flange cut-off valve [14] and the fow-through orifice [11] of control gas flow arranged on the pipeline.
4. converter steelmaking vapor-recovery unit according to claim 3, it is characterized in that: the inlet duct of described steam distributor [4] is connected to ball valve [7], vacuum breaker [6], variable valve [8], outlet conduit is connected to fow-through orifice [11], variable valve [8], and sub-cylinder also has wash water valve [15] and blow-off line.
5. converter steelmaking vapor-recovery unit according to claim 4 is characterized in that: described thermophore [1], vapor superheater [3], steam distributor [4] all are equipped with safety valve [12].
6. converter steelmaking vapor-recovery unit according to claim 5, it is characterized in that: described delivering to has variable valve [8] and fow-through orifice [11] among vacuum refinement steam-pipe E or the external steam pipeline F, and the control end of variable valve [8] connects the signal output part of PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020132521XU CN201665688U (en) | 2010-03-17 | 2010-03-17 | Recovery device of steam in steelmaking with revolving furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020132521XU CN201665688U (en) | 2010-03-17 | 2010-03-17 | Recovery device of steam in steelmaking with revolving furnace |
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| Publication Number | Publication Date |
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| CN201665688U true CN201665688U (en) | 2010-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201020132521XU Expired - Fee Related CN201665688U (en) | 2010-03-17 | 2010-03-17 | Recovery device of steam in steelmaking with revolving furnace |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534101A (en) * | 2012-02-09 | 2012-07-04 | 九源天能（北京）科技有限公司昆明分公司 | Method and device using convertor waste gas to produce high-quality steam needed by refining furnace in matching way |
| CN110260019A (en) * | 2019-04-03 | 2019-09-20 | 宁波钢铁有限公司 | The control method of outer net steam control valve is sent when a kind of steel-making RH production |
| CN111607687A (en) * | 2020-04-30 | 2020-09-01 | 邯郸钢铁集团有限责任公司 | Energy-saving device and method for improving steam quality of steelmaking RH refining furnace |
| CN112283584A (en) * | 2020-10-15 | 2021-01-29 | 中国能源建设集团广东省电力设计研究院有限公司 | Exchange system |
| CN112361216A (en) * | 2020-10-26 | 2021-02-12 | 河南中烟工业有限责任公司 | Steam supply system of cigarette throwing workshop |
-
2010
- 2010-03-17 CN CN201020132521XU patent/CN201665688U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534101A (en) * | 2012-02-09 | 2012-07-04 | 九源天能（北京）科技有限公司昆明分公司 | Method and device using convertor waste gas to produce high-quality steam needed by refining furnace in matching way |
| CN102534101B (en) * | 2012-02-09 | 2013-06-05 | 九源天能（北京）科技有限公司昆明分公司 | Method and device using convertor waste gas to produce high-quality steam needed by refining furnace in matching way |
| CN110260019A (en) * | 2019-04-03 | 2019-09-20 | 宁波钢铁有限公司 | The control method of outer net steam control valve is sent when a kind of steel-making RH production |
| CN111607687A (en) * | 2020-04-30 | 2020-09-01 | 邯郸钢铁集团有限责任公司 | Energy-saving device and method for improving steam quality of steelmaking RH refining furnace |
| CN112283584A (en) * | 2020-10-15 | 2021-01-29 | 中国能源建设集团广东省电力设计研究院有限公司 | Exchange system |
| CN112361216A (en) * | 2020-10-26 | 2021-02-12 | 河南中烟工业有限责任公司 | Steam supply system of cigarette throwing workshop |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101208 Termination date: 20130317 |