CN205537165U - Novel electric stove fourth hole flue gas surplus heat boiler system - Google Patents
Novel electric stove fourth hole flue gas surplus heat boiler system Download PDFInfo
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- CN205537165U CN205537165U CN201620385718.1U CN201620385718U CN205537165U CN 205537165 U CN205537165 U CN 205537165U CN 201620385718 U CN201620385718 U CN 201620385718U CN 205537165 U CN205537165 U CN 205537165U
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- vaporizer
- butterfly valve
- flue
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- novel electric
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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
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Abstract
The utility model discloses a novel electric stove fourth hole flue gas surplus heat boiler system, including one section middling pressure evaporimeter and the two -stage process middling pressure evaporimeter that loops through that the flue connects, the both ends of one section middling pressure evaporimeter and two -stage process middling pressure evaporimeter are connected with the middling pressure steam pocket through tedge, downtake respectively, the play steam ports of middling pressure steam pocket is connected with the heat accumulator, be connected with the over heater between one section middling pressure evaporimeter and the two -stage process middling pressure evaporimeter, the play steam ports of heat accumulator with the over heater intercommunication.
Description
Technical field
This utility model relates to waste gas heat utilization technical field, is specially a kind of Novel electric furnace the 4th hole smoke and waste steam boiler system.
Background technology
Traditional electric furnace the 4th hole smoke and waste steam boiler, introduces waste heat boiler by high-temperature heat insulation flue by the flue gas of secondary settlement room, and flue gas passes sequentially through middle pressure vaporizer, after low pressure evaporator, the air-introduced machine of Eaf'S Dusting System leads back dust pelletizing system, discharges after dedusting.Owing to electric furnace smelting process is divided into charging phase, melting stage, oxygen blast gas, reduction period and discharging phase, each electric furnace the 4th in period hole flue-gas temperature out is unstable.Strengthening decarburization in the oxygen blast phase, flue-gas temperature at this moment is the highest, and in charging phase and discharging phase, owing to not having the input of thermal source, flue-gas temperature is minimum.Under such smelting process, in a smelting cycle (50-70 minute), electric furnace the 4th hole flue gas out is after secondary settlement room, and flue-gas temperature becomes curvilinear motion between 100 DEG C to 900 DEG C, causes the unstability of thermal source.
The 4th traditional hole smoke and waste steam boiler may be restricted to the unstability of this thermal source, can only produce saturated vapor, needs the overheated of other stable thermals source just to can apply to generating, the most can not meet current power generation requirements.
Summary of the invention
This utility model provides a kind of Novel electric furnace the 4th hole smoke and waste steam boiler system, solves owing to the unstability of thermal source causes the limited problem of waste heat boiler, can produce the superheated steam being directly used in generating.
For reaching above-mentioned purpose, the technical scheme used is: Novel electric furnace the 4th hole smoke and waste steam boiler system, including pass sequentially through that flue connects one section is pressed, vaporizer and two-stage nitration are pressed vaporizer, described one section is pressed the two ends pressing vaporizer in vaporizer and two-stage nitration have middle pressure drum by tedge, down-comer connection respectively, the venthole of medium pressure drum connects thermophore, pressing vaporizer in described one section has superheater with pressing in two-stage nitration to be connected between vaporizer, and the venthole of described thermophore connects with described superheater.
As optimization, described one section is pressed and at the air inlet of vaporizer, is provided with import butterfly valve, it is provided with mixer selector valve on the flue of described import butterfly valve front end, the flue between described mixer selector valve with import butterfly valve is provided with the bypass flue that bypass butterfly valve connects with described superheater.
As optimization, described one section is pressed between vaporizer and described superheater and be provided with exit butterfly valve, be used for controlling this flue gas break-make.
As optimization, described import butterfly valve, exit butterfly valve, bypass butterfly valve and mixer selector valve are latus rectum scalable butterfly valve, control flue gas flow to facilitate by the latus rectum of regulating butterfly valve.
The beneficial effects of the utility model are: rationally recycle the heat in each stage of electric furnace smelting, it is no longer limited by thermal source instability problem, can directly produce superheated steam, avoid newly-built afterburning stove overheated, and deliver to outside steam plant area carry out at a distance overheated, save equipment cost, improve efficiency；Utilizing the various ways such as mixer selector valve, bypass butterfly valve to control superheater input gas temperature, take into account each stage of electric furnace smelting, regulating measure can realize being carried out to complex method by single.
Accompanying drawing explanation
Fig. 1 is this Novel electric furnace the 4th hole smoke and waste steam boiler system schematic
In figure: 1, mixer selector valve, 2, import butterfly valve, 3, one section is pressed vaporizer, 6, middle pressure drum, 7, bypass butterfly valve, 8, exit butterfly valve, 9, thermophore, 10, superheater, 11, two-stage nitration presses vaporizer, 12, integral deaerator, 13, low pressure evaporator, 14, Flue valve, 15, air-introduced machine, 16, softened water pump, 17, softening water tank, 18, feed pump, 19, condensate make-up piping.
Detailed description of the invention
Below in conjunction with the accompanying drawings this Novel electric furnace the 4th hole smoke and waste steam boiler system is described in detail.
Novel electric furnace the 4th hole smoke and waste steam boiler system as described in Figure 1, pressing vaporizer 11, low pressure evaporator 13 and the air-introduced machine 15 of VFC in vaporizer 3, superheater 10, two-stage nitration including pressing in pass sequentially through that flue connects one section, air-introduced machine 15 is provided by the exhaust pass of Flue valve 14 and is connected to former Eaf'S Dusting System；One section is pressed the two ends pressing vaporizer 11 in vaporizer 3 and two-stage nitration have middle pressure drum 6 by tedge, down-comer connection respectively, one section is pressed and at the air inlet of vaporizer 3, is provided with import butterfly valve 2, and it is provided with exit butterfly valve 8 between superheater 10, it is provided with mixer selector valve 1 on the flue of import butterfly valve 2 front end, being provided with the bypass flue that bypass butterfly valve 7 connects with superheater 10 on flue between mixer selector valve 1 with import butterfly valve 2, import butterfly valve 2, exit butterfly valve 8, bypass butterfly valve 7 and mixer selector valve 1 are scalable butterfly valve.
The two ends of low pressure evaporator 13 are connected by tedge and down-comer integral deaerator 12, the water inlet of integral deaerator 12 is connected with softened water pump 16, softening water tank 17 in turn by pipeline, softened water pump 16 is two, it is arranged in parallel, it is connected by pipeline between the outlet of integral deaerator 12 with the import of middle pressure drum 6 and has two middle pressure feed pumps 18 in parallel, be connected by pipeline between the venthole of middle pressure drum 6 and superheater 10 and have thermophore 9.
Supplement demineralized water for convenience, integral deaerator 12 is additionally provided with condensate make-up piping 19.
Utility model works principle is: electric furnace flue gas is under the effect of air-introduced machine 15, passing sequentially through to press in one section presses vaporizer 11, low pressure evaporator 13 to enter former Eaf'S Dusting System afterwards in vaporizer 3, superheater 10, two-stage nitration, utilize flue gas institute heat content, one section is pressed in vaporizer 3, two-stage nitration and press vaporizer 11 to produce 2.0MPa saturated vapor, drum 6 is pressed to deliver to thermophore 9 in Jing Guo, after thermophore 9 accumulation of heat, stably send 0.8-1.2MPa saturated vapor carry out to superheater 10 overheated, thus obtain the superheated steam of 0.8-1.2MPa saturated vapor, send generating outside.Low pressure evaporator 13 and integral deaerator 12 form natural circulation boiler, absorb heat and system feedwater is carried out deoxygenation.
When electric furnace smelting is in the oxygen blast phase, the flue-gas temperature entering steam generator system is higher, reach as high as 900 DEG C, can be by strengthening air-introduced machine 15 rotating speed the method opening big mixer selector valve 1, control superheater 10 air inlet flue-gas temperature, stabilizing it at about 300 DEG C, it is overheated that the saturated vapor exporting thermophore 9 is carried out.
When electric furnace smelting is in melting stage and reduction period, the flue-gas temperature entering steam generator system is not the most the highest, the flue-gas temperature of superheater 10 air inlet can be controlled by the rotating speed of regulation air-introduced machine 15, stabilize it at about 300 DEG C, it may be necessary to open big mixer selector valve 1 and control superheater 10 air inlet flue-gas temperature.
When electric furnace smelting is in charging phase and discharging phase, flue-gas temperature is relatively low, first pass through and gradually reduce air-introduced machine 15 rotating speed to regulate superheater 10 air inlet flue-gas temperature, when reducing air-introduced machine 15 rotating speed and can not reach to control superheater 10 air inlet flue-gas temperature, can be by closing small inlet butterfly valve 2, exit butterfly valve 8, and the method driving big bypass butterfly valve 7 controls flue-gas temperature, import butterfly valve 2, exit butterfly valve 8 can be completely closed if desired, fully open bypass butterfly valve 7, make flue gas walk around in one section and press vaporizer 3 to be directly entered superheater 10.
The application is preposition by vaporizer, utilizes decalescence to reduce gas approach temperature, thus avoids waste heat boiler import equipment and affected by high temperature in the oxygen blast of electric furnace phase and damage；Boiler low-temperature part uses low pressure evaporator, thus can control boiler export wall temperature of heated surface, prevents dew point corrosion.
The above is only preferred implementation of the present utility model, and protection domain of the present utility model is not limited merely to above-described embodiment, and all technical schemes belonged under this utility model thinking belong to protection domain of the present utility model.It should be pointed out that, for those skilled in the art, without departing from the some improvements and modifications under this utility model principle premise, also should be regarded as protection domain of the present utility model.
Claims (4)
1. Novel electric furnace the 4th hole smoke and waste steam boiler system, including pass sequentially through that flue connects one section is pressed, vaporizer and two-stage nitration are pressed vaporizer, described one section is pressed the two ends pressing vaporizer in vaporizer and two-stage nitration have middle pressure drum by tedge, down-comer connection respectively, the venthole of medium pressure drum connects thermophore, it is characterized in that: pressing vaporizer in described one section with pressing in two-stage nitration to be connected between vaporizer has superheater, and the venthole of described thermophore connects with described superheater.
Novel electric furnace the 4th hole the most according to claim 1 smoke and waste steam boiler system, it is characterized in that: described one section is pressed and at the air inlet of vaporizer, is provided with import butterfly valve, it is provided with mixer selector valve on the flue of described import butterfly valve front end, it is provided with the bypass flue connected with described superheater on flue between described mixer selector valve with import butterfly valve, described bypass flue is provided with bypass butterfly valve.
Novel electric furnace the 4th hole the most according to claim 2 smoke and waste steam boiler system, it is characterised in that: described import butterfly valve, bypass butterfly valve and mixer selector valve are latus rectum scalable butterfly valve.
Novel electric furnace the 4th hole the most according to claim 1 smoke and waste steam boiler system, it is characterised in that: described one section is pressed between vaporizer and described superheater and be provided with the adjustable exit butterfly valve of latus rectum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620385718.1U CN205537165U (en) | 2016-05-03 | 2016-05-03 | Novel electric stove fourth hole flue gas surplus heat boiler system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620385718.1U CN205537165U (en) | 2016-05-03 | 2016-05-03 | Novel electric stove fourth hole flue gas surplus heat boiler system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205537165U true CN205537165U (en) | 2016-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620385718.1U Expired - Fee Related CN205537165U (en) | 2016-05-03 | 2016-05-03 | Novel electric stove fourth hole flue gas surplus heat boiler system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205537165U (en) |
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2016
- 2016-05-03 CN CN201620385718.1U patent/CN205537165U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20200503 |
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| CF01 | Termination of patent right due to non-payment of annual fee |