CN103953917B - A kind of hold over system structure producing micro-superheated steam - Google Patents
A kind of hold over system structure producing micro-superheated steam Download PDFInfo
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- CN103953917B CN103953917B CN201410150835.5A CN201410150835A CN103953917B CN 103953917 B CN103953917 B CN 103953917B CN 201410150835 A CN201410150835 A CN 201410150835A CN 103953917 B CN103953917 B CN 103953917B
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Abstract
The invention provides a kind of hold over system structure producing micro-superheated steam, comprise storage heater, control valve, heat exchanger, circulating pump and temperature sensor, wherein said storage heater comprises the first air inlet mouth of pipe, first gives vent to anger the mouth of pipe, first water inlet pipe mouth and the first effluent pipe mouth, described heat exchanger comprises the second air inlet mouth of pipe, second gives vent to anger the mouth of pipe, second water inlet pipe mouth and the second effluent pipe mouth, described control valve is communicated with the second air inlet mouth of pipe by the tracheae mouth of pipe of giving vent to anger first, first effluent pipe mouth is communicated with the second water inlet pipe mouth by water pipe by described circulating pump, second effluent pipe mouth is then directly communicated with by water pipe with the first water inlet pipe mouth, and described temperature sensor be arranged at second give vent to anger the mouth of pipe be communicated with tracheae on and with this circulating pump electrical communication, by aforementioned structure or its combination constructed, achieve this hold over system structure, thus reached and reduce cost and environmental protection, energy-conservation good result.
Description
Technical field
The present invention relates to the renovation and utilization technology of converter vaporization cooling waste heat, espespecially a kind of hold over system structure producing micro-superheated steam.
Background technology
Converter vaporization cooling waste heat boiler, by the heat in cooling water vaporization absorption converter gas, produces saturated vapor for user.Flue gas is just had to produce when only having Converter Oxigen Blowing to smelt, so flue gas thermal source is interrupted to produce, the steam that waste heat boiler produces also is be interrupted, and steam production fluctuation is larger during Converter Oxigen Blowing, by arranging varying pressure thermal storage apparatus, the steam that the steam being interrupted generation can be become continous-stable exports, so that for user continuously.
The vavuum pump of RH or the VD rectification systems of steel mill needs to use the steam of the degree of superheat 10 DEG C ~ about 20 DEG C as vapour source, and steam use is interrupted, the steam pressure parameter used is generally pressure 1.0MPa, temperature 190 DEG C, and storage heater steam parameter is out: pressure 1.0MPa, temperature 180 DEG C (saturation temperature).In order to meet vavuum pump instructions for use, generally in early time arrange Quick fuel oil (combustion gas) boiler specialized in vavuum pump and use, this kind of boiler must stand-by heat at any time, and can start fast and reach rated capacity, this kind of boiler is external production substantially, and equipment investment is expensive, and operating system is complicated.
Recent years, along with energy prices progressively rise, steel mill has arrived the attention diversion in vacuum mercury vapour source on the saturated vapor of Converter Residual Heat Boiler oneself generation, but transformation heat accumulator can only produce saturated vapor, can not superheated steam be produced, directly cannot be supplied to vavuum pump and use.Through the practice of each steel mill, Converter Residual Heat Boiler saturated vapor supply vavuum pump is used to have following several at present:
The first, refer to shown in Fig. 1, after accumulator outlet, arranges combustion gas/fuel oil heater (or electricity/electromagnetic heater), saturated vapor is heated to superheated steam, then for vavuum pump by the mode consuming other energy in a large number before vavuum pump.
The second uses the storage heater of band internal heater to produce superheated steam, then for vavuum pump.
The third, arrange high-low pressure two storage heaters, add the saturated vapor of heat low accumulator outlet, then for vavuum pump with the heat exchanger at high pressure storage heater top.
But the defect that above-mentioned prior art exists is: as the first uses combustion gas or fuel oil heater, its essence is configured with the boiler that is only had superheater, needs perfect boiler control system, need perfect air and gas system, and investment is large, system complex.Make electricity consumption or Electromagnetic Heating, need the explosion-proof of strict consideration heater, and electric heater is bulky, difficult arrangement.This method consumes other energy in a large number, system complex, inconvenient operation, at present by market; And the built-in heater of the second uses, and the water added in high steam or storage heater that hot vapour source produces for converter drum carrys out heating steam, use the high pressure steam heating effect of drum can be said to be still can, can once converter stops oxygen blast, high steam just without, the water of storage heater can only be used heat, because saturated vapor end constantly takes away heat, the water cooling down gradually of heater surrounding, but the water in storage heater to be geo-stationary immobilising, so heating effect is deteriorated gradually, until saturated vapor cannot be heated to overheated.And heat exchanger is arranged in storage heater, occupies accumulation of heat space, increase storage heater volume, increase the bore size of storage heater, increase the reinforcement thickness of perforate, and because need to change storage heater, can only grassroot project be applicable to; As for the third, high-low pressure two storage heaters are set, the steam of the air space of high pressure storage heater is used to add heat low storage heater saturated vapor out, although make moderate progress than aforementioned the second, but air space steam is equally also that geo-stationary is immobilising in high pressure storage heater, along with the cold solidifying water loading of a large amount of mistake is on heater outer wall, formed water membrane, the effect of heater will worse and worse, until saturated vapor cannot be heated to overheated.
Summary of the invention
For solving the problems of the technologies described above, main purpose of the present invention is to provide a kind of hold over system structure producing micro-superheated steam, and it is overheated that this hold over system structure not only achieves control automatically, and can effective use of energy sources.
For reaching above-mentioned purpose, the technical scheme of the present invention's application is: a kind of hold over system structure producing micro-superheated steam, comprise storage heater, control valve, heat exchanger, circulating pump and temperature sensor, wherein: described storage heater comprises the first air inlet mouth of pipe, first gives vent to anger the mouth of pipe, first water inlet pipe mouth and the first effluent pipe mouth, described heat exchanger comprises the second air inlet mouth of pipe, second gives vent to anger the mouth of pipe, second water inlet pipe mouth and the second effluent pipe mouth, described control valve is communicated with the second air inlet mouth of pipe by the tracheae mouth of pipe of giving vent to anger first, first effluent pipe mouth is communicated with the second water inlet pipe mouth by water pipe by described circulating pump, second effluent pipe mouth is then directly communicated with by water pipe with the first water inlet pipe mouth, and described temperature sensor be arranged at second give vent to anger the mouth of pipe be communicated with tracheae on and with this circulating pump electrical communication.
Preferred in the present embodiment, described hold over system structure comprises the tracheae that one end is communicated with this first air inlet mouth of pipe further, and this tracheae other end is then communicated with Converter Residual Heat Boiler.
Preferred in the present embodiment, described tracheae and water pipe be metal tube all.
Preferred in the present embodiment, described heat exchanger is arranged on the outside of this storage heater.
Preferred in the present embodiment, described storage heater is pressure variable ssteam heat storage device.
Preferred in the present embodiment, described circulating pump comprises variable-frequency motor.
Preferred in the present embodiment, described control valve is arranged at first by tracheae and gives vent to anger between the mouth of pipe and the second air inlet mouth of pipe.
Compared with prior art, its useful effect is in the present invention: it is overheated that this hold over system structure not only achieves control automatically, and energy effective use of energy sources, reduces cost, also reached environmental protection, energy-conservation good result for convenience of operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art.
Fig. 2 is the structural representation of the present embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Refer to shown in Fig. 2, for a kind of hold over system structure producing micro-superheated steam provided by the invention, it comprises storage heater 10, control valve 20, heat exchanger 30, circulating pump 40 and temperature sensor 50, wherein: described storage heater 10 comprises the first air inlet mouth of pipe 11, first gives vent to anger the mouth of pipe 12, first water inlet pipe mouth 13 and the first effluent pipe mouth 14, described heat exchanger 30 comprises the second air inlet mouth of pipe 31, second gives vent to anger the mouth of pipe 32, second water inlet pipe mouth 33 and the second effluent pipe mouth 34, described control valve 20 is communicated with the second air inlet mouth of pipe 31 by the tracheae mouth of pipe 12 of giving vent to anger first, first effluent pipe mouth 14 is communicated with the second water inlet pipe mouth 33 by water pipe by described circulating pump 40, second effluent pipe mouth 34 is then directly communicated with by water pipe with the first water inlet pipe mouth 13, and described temperature sensor 50 be arranged at second give vent to anger the mouth of pipe 32 be communicated with tracheae on and with this circulating pump 40 electrical communication, in the present embodiment, the described first air inlet mouth of pipe 11 is communicated with Converter Residual Heat Boiler by tracheae, in the present embodiment, described tracheae and water pipe be metal tube all, in the present embodiment, described heat exchanger 30 is arranged on the outside of this storage heater 10, in the present embodiment, described heat exchanger 30 is divided into surface-type, board-like and shell-and-tube heat exchanger, in the present embodiment, described storage heater 10 is pressure variable ssteam heat storage device, in the present embodiment, described circulating pump 40 comprises variable-frequency motor, in the present embodiment, described control valve 20 is arranged at first by tracheae and gives vent to anger between the mouth of pipe 12 and the second air inlet mouth of pipe 31.
The operation principle of the present embodiment is: the hold over system structure of the micro-superheated steam of this generation, is inputted the high-pressure saturated steam of Converter Residual Heat Boiler drum by the described first air inlet mouth of pipe 11, and high-pressure saturated steam enters storage heater 10 and heats the water of the inside to saturation temperature.When VD or RH device needs to use steam, open control valve 20, the saturated vapor that storage heater 10 produces is decompressed to user's pressure through control valve 20, again through entering heat exchanger 30, open circulating pump 40 delivers in heat exchanger 30 by the high-temperature water in storage heater 10 simultaneously, saturated vapor is heated to the required degree of superheat by the high-temperature water in heat exchanger 30, then high-temperature water is got back in storage heater 10, because circulating pump 40 uses variable-frequency motor, the temperature sensor 50 that can be provided with according to heat exchanger 30 steam (vapor) outlet carrys out monitor temperature and refers to this order circulating pump 40 adjusting rotary speed by associated electronic device (not shown), and then regulate the flow of circulating pump 40, when the degree of superheat of heat exchanger 30 outlet vapor is lower than expanded motor rotating speed when 10 DEG C, increase circulating pump 40 flow, otherwise, then reduce motor speed, reduce circulating pump 40 flow, until steam superheat is stablized.
Parameter when further illustrating the hold over system structure operation of the micro-superheated steam of this generation below in conjunction with the present embodiment:
Parameter from the high steam of Converter Residual Heat Boiler drum is pressure 3.82MPa, temperature 248 DEG C enters in storage heater 10 and fills heat, and the parameter water in storage heater 10 being heated to saturation temperature is pressure 3.82MPa, temperature 248 DEG C.When the vavuum pump of VD or RH device needs to use steam to vacuumize, open control valve 20, the parameter that water flash distillation in storage heater 10 forms saturated vapor is pressure 3.82MPa, temperature 248 DEG C, saturated vapor reduces pressure as the parameter of user's pressure is pressure 1.0MPa through control valve 20, temperature 189 DEG C, post-decompression steam enters heat exchanger 30, open circulating pump 40 simultaneously, circulating pump 40 suck storage heater 10 high-temperature water and sent in heat exchanger 30 high temperature side heating low temperature side saturated vapor, be pressure 1.0MPa by the steam after heating from the parameter that superheater low temperature side exports out, temperature 209 DEG C, wherein the degree of superheat is 20 DEG C, the requirement of vavuum pump to steam superheat can be met completely.The high-temperature water of cooled cooling is out got back in storage heater 10 from the high temperature side of heat exchanger 30 and is mixed with its high-temperature water.Heat exchanger 30 outlet steam temperature is recorded by temperature sensor 50: as worked as its numerical value lower than 209 DEG C, strengthen circulating pump 40 flow, until heat exchanger 30 outlet steam temperature reaches 209 DEG C, otherwise then reduce the flow of circulating pump 40, until heat exchanger 30 outlet steam temperature is not more than 209 DEG C.
In sum, be only the preferred embodiment of the present invention, do not limit protection scope of the present invention with this, all equivalence changes done according to the scope of the claims of the present invention and description with modify, be all within scope that patent of the present invention contains.
Claims (7)
1. one kind produces the hold over system structure of micro-superheated steam, comprise storage heater, control valve, heat exchanger, circulating pump and temperature sensor, it is characterized in that: described storage heater comprises the first air inlet mouth of pipe, first gives vent to anger the mouth of pipe, first water inlet pipe mouth and the first effluent pipe mouth, described heat exchanger comprises the second air inlet mouth of pipe, second gives vent to anger the mouth of pipe, second water inlet pipe mouth and the second effluent pipe mouth, described control valve is communicated with the second air inlet mouth of pipe by the tracheae mouth of pipe of giving vent to anger first, first effluent pipe mouth is communicated with the second water inlet pipe mouth by water pipe by described circulating pump, second effluent pipe mouth is then directly communicated with by water pipe with the first water inlet pipe mouth, and described temperature sensor be arranged at second give vent to anger the mouth of pipe be communicated with tracheae on and with this circulating pump electrical communication.
2. the hold over system structure producing micro-superheated steam as claimed in claim 1, it is characterized in that: described hold over system structure comprises the tracheae that one end is communicated with this first air inlet mouth of pipe further, this tracheae other end is then communicated with Converter Residual Heat Boiler.
3. the hold over system structure producing micro-superheated steam as claimed in claim 2, is characterized in that: described tracheae and water pipe are all metal tubes.
4. the hold over system structure producing micro-superheated steam as claimed in claim 3, is characterized in that: described heat exchanger is arranged on the outside of this storage heater.
5. the hold over system structure producing micro-superheated steam as claimed in claim 4, is characterized in that: described storage heater is pressure variable ssteam heat storage device.
6. the hold over system structure producing micro-superheated steam as claimed in claim 5, is characterized in that: described circulating pump comprises variable-frequency motor.
7. the hold over system structure producing micro-superheated steam as claimed in claim 6, is characterized in that: described control valve is arranged at first by tracheae and gives vent to anger between the mouth of pipe and the second air inlet mouth of pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410150835.5A CN103953917B (en) | 2014-04-16 | 2014-04-16 | A kind of hold over system structure producing micro-superheated steam |
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| CN201410150835.5A CN103953917B (en) | 2014-04-16 | 2014-04-16 | A kind of hold over system structure producing micro-superheated steam |
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| CN103953917A CN103953917A (en) | 2014-07-30 |
| CN103953917B true CN103953917B (en) | 2015-12-02 |
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| CN105112604A (en) * | 2015-07-17 | 2015-12-02 | 田景波 | Steelmaking converter evaporation cooling dynamic energy recovery system and technological process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003329382A (en) * | 2002-05-09 | 2003-11-19 | Energy Support Corp | Heat accumulator |
| CN1912459A (en) * | 2005-08-09 | 2007-02-14 | 中冶赛迪工程技术股份有限公司 | Variation of pressure heat accumulator system with microsuperheat |
| CN101381797A (en) * | 2008-10-28 | 2009-03-11 | 南京钢铁股份有限公司 | Steam supply apparatus for RH vacuum steel refining furnace |
| CN102003419A (en) * | 2010-10-21 | 2011-04-06 | 重庆智得热工工业有限公司 | Steam ejector composite set |
| CN201935587U (en) * | 2011-01-05 | 2011-08-17 | 中冶华天工程技术有限公司 | Electric furnace flue gas waste heat comprehensive utilization device |
| CN203823742U (en) * | 2014-04-16 | 2014-09-10 | 中冶南方工程技术有限公司 | Heat accumulation system structure for generating micro superheated steam |
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2014
- 2014-04-16 CN CN201410150835.5A patent/CN103953917B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003329382A (en) * | 2002-05-09 | 2003-11-19 | Energy Support Corp | Heat accumulator |
| CN1912459A (en) * | 2005-08-09 | 2007-02-14 | 中冶赛迪工程技术股份有限公司 | Variation of pressure heat accumulator system with microsuperheat |
| CN101381797A (en) * | 2008-10-28 | 2009-03-11 | 南京钢铁股份有限公司 | Steam supply apparatus for RH vacuum steel refining furnace |
| CN102003419A (en) * | 2010-10-21 | 2011-04-06 | 重庆智得热工工业有限公司 | Steam ejector composite set |
| CN201935587U (en) * | 2011-01-05 | 2011-08-17 | 中冶华天工程技术有限公司 | Electric furnace flue gas waste heat comprehensive utilization device |
| CN203823742U (en) * | 2014-04-16 | 2014-09-10 | 中冶南方工程技术有限公司 | Heat accumulation system structure for generating micro superheated steam |
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