CN201521944U - Waste-heat boiler off-gas control apparatus for float glass smelting kiln - Google Patents
Waste-heat boiler off-gas control apparatus for float glass smelting kiln Download PDFInfo
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- CN201521944U CN201521944U CN2009200827432U CN200920082743U CN201521944U CN 201521944 U CN201521944 U CN 201521944U CN 2009200827432 U CN2009200827432 U CN 2009200827432U CN 200920082743 U CN200920082743 U CN 200920082743U CN 201521944 U CN201521944 U CN 201521944U
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- flue
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- flue gas
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Abstract
The utility model relates to the field of glass smelting kilns and aims at overcoming the technical problems of the prior WHB (waste heat boiler) off-gas control apparatus of float glass smelting kilns that the smelting kiln off-gas parameter fluctuation greatly impacts the running of the boiler; boiler steam parameter is unstable; waste heat recycling rate is low and the stability of system running is poor and the like. An off-gas vent of the glass smelting kiln provided by the utility model is communicated with an off-gas inlet of the WHB through an outlet flue, and an off-gas outlet of the WHB is respectively communicated with a chimney and a frequency-conversion draught fan, and an outlet of the frequency-conversion draught fan is communicated with the chimney; the outlet flue is a three-way pipe; a regulating valve is arranged in the middle of a section of the outlet flue which is connected with the off-gas vent of the glass smelting kiln; a main flue gate valve is arranged in the middle of the section of the outlet flue which is connected with the chimney; and a boiler inlet electric butterfly valve is arranged in the middle of the section of the outlet flue which is connected with the WHB off-gas inlet. The waste-heat boiler off-gas control apparatus can be applied to WHB off-gas control of the float glass smelting kiln.
Description
Technical field
The utility model relates to the glass melter technical field, particularly a kind of fume control system of glass melter waste heat boiler.
Background technology
In the modern industry that is becoming tight energy day and is the theme with energy-saving and emission-reduction was produced, waste gas heat utilization had been subjected to showing great attention to of every profession and trade.Warm waste gas residual heat during float glass smelting kiln waste gas belongs to, temperature are 450～550 ℃, and both at home and abroad glass industry mainly adopts and heat pipe waste heat boiler is set carries out heat utilization, the recovery section heat energy from waste gas, and the flue gas major part is partly passed through.Waste heat boiler is used to produce saturated vapor, offer the heavy oil heating or bear the heating thermic load, or the low-temp low-pressure device for generating power by waste heat of supporting small-scale is supplied with the glass production systematic electricity.
Because the main feature of float glass smelting kiln production is not stop kiln in kiln age (6～10 years), guarantee that under any circumstance smoke evacuation is unobstructed, to guarantee the safe operation of float glass smelting kiln; Will guarantee the steady of kiln inner pressure in any situation, any operation will remain on ± the interior fluctuation of 0.5Pa scope the influence of furnace pressure, to guarantee the quality of glass; So the adaptability to residual heat using device requires very high.
Tradition float glass melting tank afterheat boiler furnace pressure, exhaust gas volumn, flue-gas temperature change along with the fluctuation of melting furnaces Gas Parameters, to cause a series of agricultural technology problem, the poor stability of appearance such as boiler operatiopn, the steam quality that boiler produces is low, perhaps when the melting furnaces Gas Parameters fluctuates, adjusting enters the exhaust gas volumn (being that flue gas passes through) of boiler, and then the fume afterheat utilization rate is low.The instability of aforementioned parameters can directly have influence on operate as normal parameter when boiler failure (or take place) of boiler, the pressure of boiler smoke passage is sharply changed, cause the float glass smelting kiln klin pressure fluctuation simultaneously, cause glass quality to be affected or damage float glass smelting kiln, tradition causes very serious consequence.
The utility model content
Technical problems such as the utility model is intended to solve that the melting furnaces Gas Parameters fluctuation that exists in traditional float glass melting tank afterheat boiler flue gas control device is big to the boiler operatiopn influence, Boiler Steam parameter instability, heat recovery rate are low, system's fluctuation of service, with provide a kind of energy flexibly, stable, reliably adjust boiler operatiopn parameter, reduce the fluctuation of melting furnaces Gas Parameters to boiler operatiopn influence, Boiler Steam parameter stability, heat recovery rate height, the stable float glass melting tank afterheat boiler flue gas control device of system.
The purpose of this utility model is achieved through the following technical solutions:
Float glass melting tank afterheat boiler flue gas control device of the present utility model, wherein the flue gas discharge opening of glass melter 16 interlinks by the gas approach of exhaust pass 25 with waste heat boiler, and the exhanst gas outlet of waste heat boiler and chimney 17 interlink; The exhanst gas outlet of waste heat boiler is connected with frequency conversion air-introduced machine 15, and the outlet of frequency conversion air-introduced machine 15 and chimney 17 interlink; Exhaust pass 25 is a three-way pipe, its one section middle part that connects the flue gas discharge opening of glass melter 16 is provided with control valve 18, its one section middle part that connects chimney 17 is provided with flue collector slide valve 19, and its one section middle part that connects the exhaust-heat boiler flue gas import is provided with the electronic dish valve 20 of boiler inlet.
Float glass melting tank afterheat boiler flue gas control device of the present utility model, be provided with flue gas pressures behind wherein said control valve 18 valves, temperature detection becomes send device, described flue collector slide valve 19 is the slide valve with electronic executing agency, be provided with flue gas pressures detection change behind its valve and send device, described frequency conversion air-introduced machine 15 is the frequency conversion air-introduced machine with electronic executing agency, the detection of control valve 18 and flue collector slide valve 19 becomes send the device output to be connected with the respective input of DCS control module respectively, and the output of DCS control module connects the electric operator of flue collector slide valve 19 and the electric operator of frequency conversion air-introduced machine 15 respectively.
Float glass melting tank afterheat boiler flue gas control device of the present utility model, lead on the pipeline between the outlet of wherein said frequency conversion air-introduced machine 15 and the chimney 17 by-pass flue 27 is arranged, be provided with the electronic dish valve 21 of flue outlet between by-pass flue 27 and the chimney 17, by-pass flue 27 is provided with bypass electric butterfly valve 24, and atmosphere is directly led in 24 outlets of bypass electric butterfly valve.
Float glass melting tank afterheat boiler flue gas control device of the present utility model, wherein said frequency conversion air-introduced machine 15 are two frequency conversion air-introduced machines in parallel, and its air inlet is equipped with the electronic dish valve 22 of air-introduced machine import, and air outlet is equipped with air-introduced machine and exports electronic dish valve 23.
Float glass melting tank afterheat boiler flue gas control device of the present utility model, wherein said waste heat boiler are that single drum ∏ shape is arranged waste heat boiler.
The beneficial effect of the utility model float glass melting tank afterheat boiler flue gas control device:
1. this system has flexibly, stablizes, regulates the control function reliably, can adjust the parameter of boiler operatiopn in good time, adapts to the variation of float glass smelting kiln furnace pressure, guarantees that waste heat boiler does not under any circumstance influence the normal operation of float glass smelting kiln;
2. this system is satisfying the normal while of float glass smelting kiln furnace pressure and glass production, reduce the influence of the fluctuation of melting furnaces Gas Parameters to boiler operatiopn, guarantee the relatively stable of Boiler Steam parameter, recycle the waste heat in the waste gas that float glass smelting kiln produces to greatest extent;
3. exhaust-heat boiler flue gas control system and device provide reliable assurance for the stable operation of waste heat boiler heat supply and afterheat generating system;
4. applicable to all float glass melting tank afterheat boiler systems.
Description of drawings
Fig. 1 is a system architecture schematic diagram of the present utility model
Fig. 2 is a flue regulation and control system schematic diagram of the present utility model
The number in the figure explanation:
9 waste heat boilers, 15 frequency conversion air-introduced machines, 16 glass melters, 17 chimneys, 18 intermediate regulations valves, 19 flue collector slide valves, the electronic dish valve of 20 boiler inlets, the electronic dish valve of 21 flue outlets, the electronic dish valve of 22 air-introduced machine imports, 23 air-introduced machines export electronic dish valve, 24 bypass electric butterfly valves, 25 exhaust pass, 27 by-pass flues, 28 recirculated waters inlet, 29 steam (vapor) outlets
The specific embodiment
The utility model detailed structure, application principle, effect and effect are illustrated by following embodiment with reference to accompanying drawing 1-2.
Float glass melting tank afterheat boiler flue gas control device of the present utility model, wherein the flue gas discharge opening of glass melter 16 arranges that by exhaust pass 25 and single drum ∏ shape the gas approach of waste heat boiler interlinks, and the exhanst gas outlet of waste heat boiler and chimney 17 interlink; The exhanst gas outlet of waste heat boiler is connected with frequency conversion air-introduced machine 15, and the outlet of frequency conversion air-introduced machine 15 and chimney 17 interlink; Exhaust pass 25 is a three-way pipe, its one section middle part that connects the flue gas discharge opening of glass melter 16 is provided with control valve 18, its one section middle part that connects chimney 17 is provided with flue collector slide valve 19, and its one section middle part that connects the exhaust-heat boiler flue gas import is provided with the electronic dish valve 20 of boiler inlet.
Being provided with flue gas pressures, temperature detection behind control valve 18 valves becomes and send device, flue collector slide valve 19 is the slide valve with electronic executing agency, be provided with flue gas pressures detection change behind its valve and send device, frequency conversion air-introduced machine 15 is the frequency conversion air inducing with electronic executing agency, the detection of control valve 18 and flue collector slide valve 19 becomes send the device output to be connected with the respective input of DCS control module respectively, and the output of DCS control module connects the electric operator of flue collector slide valve 19 and the electric operator of frequency conversion air-introduced machine 15 respectively.
Lead on the pipeline between the outlet of frequency conversion air-introduced machine 15 and the chimney 17 by-pass flue 27 is arranged, be provided with the electronic dish valve 21 of flue outlet between by-pass flue 27 and the chimney 17, by-pass flue 27 is provided with bypass electric butterfly valve 24, and atmosphere is directly led in 24 outlets of bypass electric butterfly valve.Frequency conversion air-introduced machine 15 is two frequency conversion air-introduced machines in parallel, and its air inlet is equipped with the electronic dish valve 22 of air-introduced machine import, and air outlet is equipped with air-introduced machine and exports electronic dish valve 23.
Native system is a main signal with melting furnaces flue intermediate regulations valve 18 back pressure, the aperture of melting furnaces flue main gate-board door 19 and the rotating speed (blast) of frequency conversion fan 15 are feed-forward signal, pressure behind the melting furnaces flue main gate-board door 19 is feedback signal, main signal and feedback signal enter DCS (dcs) control module, the DCS control module is by calculating two signal conversions and difference, and send instruction by the DCS control module, regulate the aperture of melting furnaces flue main gate-board door 19 and the rotating speed (being blast) of air-introduced machine 15 by electric operator (being executing agency and frequency converter).When for example boiler startup or load progressively increase, melting furnaces flue main gate-board door 19 progressively reduces aperture, frequency conversion fan 15 progressively improves rotating speed, exhaust gas volumn by boiler is progressively increased, the exhaust gas volumn of directly arranging to chimney 17 by melting furnaces flue main gate-board door 19 gradually reduces, simultaneously before melting furnaces flue main gate-board door 19 is closed fully, be equipped with behind the boiler frequency conversion fan 15 by-pass flue 27 with flue gas directly row to atmosphere, guarantee that the flue gas that boiler is discharged is not back to the boiler inlet flue by melting furnaces flue main gate-board door 19, pressure differential after making melting furnaces flue main gate-board in front of the door and no waste heat boiler and flue leads directly to the state consistency of chimney be not so can have any impact to the glass melter furnace pressure.Boiler stops or loading and pursue when falling, and its control and regulation process is opposite.
In waste heat boiler startup and the stopped process, native system is to regulate each valve opening of control; Boiler induced-draft fan 15 rotating speeds are controlled to be auxilliary, and normal operation back is controlled to be the master by boiler induced-draft fan 15 rotating speeds, and each valve opening is controlled to be auxilliary.
Waste heat boiler when flue gas pressures exerts an influence to furnace pressure, is then opened bypass electric butterfly valve 24 when startup and emergency, flue gas is directly to airborne release.
When a boiler induced-draft fan 15 breaks down can not move the time,, guarantee the normal operation of waste heat boiler and the ordinary production of float glass smelting kiln with opening another standby air-introduced machine.
From the above, the utlity model has flexible, stable, the function of adjusting control reliably, can adjust the parameter of boiler operatiopn in good time, adapt to the variation of float glass smelting kiln furnace pressure, guarantee that waste heat boiler does not under any circumstance influence the normal operation of float glass smelting kiln; This system is satisfying the normal while of float glass smelting kiln furnace pressure and glass production, reduce the influence of the fluctuation of melting furnaces Gas Parameters to boiler operatiopn, guarantee the relatively stable of Boiler Steam parameter, recycle the waste heat in the waste gas that float glass smelting kiln produces to greatest extent.Native system is applicable to all float glass melting tank afterheat boiler systems.
Claims (5)
1. float glass melting tank afterheat boiler flue gas control device is characterized in that: the flue gas discharge opening of glass melter (16) interlinks by the gas approach of exhaust pass (25) with waste heat boiler, and the exhanst gas outlet of waste heat boiler and chimney (17) interlink; The exhanst gas outlet of waste heat boiler is connected with frequency conversion air-introduced machine (15), and the outlet of frequency conversion air-introduced machine (15) and chimney (17) interlink; Exhaust pass (25) is a three-way pipe, its one section middle part that connects the flue gas discharge opening of glass melter (16) is provided with control valve (18), its one section middle part that connects chimney (17) is provided with flue collector slide valve (19), and its one section middle part that connects the exhaust-heat boiler flue gas import is provided with the electronic dish valve of boiler inlet (20).
2. float glass melting tank afterheat boiler flue gas control device as claimed in claim 1, it is characterized in that: be provided with flue gas pressures behind described control valve (18) valve, temperature detection becomes send device, described flue collector slide valve (19) is the slide valve with electronic executing agency, be provided with flue gas pressures detection change behind its valve and send device, described frequency conversion air-introduced machine (15) is the frequency conversion air-introduced machine with electronic executing agency, the detection of control valve (18) and flue collector slide valve (19) becomes send the device output to be connected with the respective input of DCS control module respectively, and the output of DCS control module connects the electric operator of flue collector slide valve (19) and the electric operator of frequency conversion air-introduced machine (15) respectively.
3. float glass melting tank afterheat boiler flue gas control device as claimed in claim 1, it is characterized in that: leading on the pipeline between the outlet of described frequency conversion air-introduced machine (15) and the chimney (17) has by-pass flue (27), be provided with the electronic dish valve of flue outlet (21) between by-pass flue (27) and the chimney (17), by-pass flue (27) is provided with bypass electric butterfly valve (24), and atmosphere is directly led in bypass electric butterfly valve (24) outlet.
4. float glass melting tank afterheat boiler flue gas control device as claimed in claim 1, it is characterized in that: described frequency conversion air-introduced machine (15) is two frequency conversion air-introduced machines in parallel, its air inlet is equipped with the electronic dish valve of air-introduced machine import (22), and air outlet is equipped with air-introduced machine and exports electronic dish valve (23).
5. float glass melting tank afterheat boiler flue gas control device as claimed in claim 1 is characterized in that: described waste heat boiler is that single drum ∏ type is arranged waste heat boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200827432U CN201521944U (en) | 2009-07-20 | 2009-07-20 | Waste-heat boiler off-gas control apparatus for float glass smelting kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200827432U CN201521944U (en) | 2009-07-20 | 2009-07-20 | Waste-heat boiler off-gas control apparatus for float glass smelting kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201521944U true CN201521944U (en) | 2010-07-07 |
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ID=42508120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200827432U Expired - Lifetime CN201521944U (en) | 2009-07-20 | 2009-07-20 | Waste-heat boiler off-gas control apparatus for float glass smelting kiln |
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| CN (1) | CN201521944U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968216A (en) * | 2010-10-20 | 2011-02-09 | 成都四通新能源技术有限公司 | System for automatically adjusting temperature of smoke at outlet of waste heat boiler |
| CN102721221A (en) * | 2012-06-07 | 2012-10-10 | 何秀锦 | Production process cooling water waste heat recovery system |
-
2009
- 2009-07-20 CN CN2009200827432U patent/CN201521944U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968216A (en) * | 2010-10-20 | 2011-02-09 | 成都四通新能源技术有限公司 | System for automatically adjusting temperature of smoke at outlet of waste heat boiler |
| CN101968216B (en) * | 2010-10-20 | 2013-02-20 | 成都昊特新能源技术有限公司 | System for automatically adjusting temperature of smoke at outlet of waste heat boiler |
| CN102721221A (en) * | 2012-06-07 | 2012-10-10 | 何秀锦 | Production process cooling water waste heat recovery system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100707 |
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| CX01 | Expiry of patent term |