CN103727514A - Exhaust gas temperature adjusting device of waste heat power generation boiler of glass kiln - Google Patents
Exhaust gas temperature adjusting device of waste heat power generation boiler of glass kiln Download PDFInfo
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- CN103727514A CN103727514A CN201310678779.8A CN201310678779A CN103727514A CN 103727514 A CN103727514 A CN 103727514A CN 201310678779 A CN201310678779 A CN 201310678779A CN 103727514 A CN103727514 A CN 103727514A
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Abstract
The invention discloses an exhaust gas temperature adjusting device of a waste heat power generation boiler of a glass kiln. A low-pressure boiler barrel (7) and low-pressure evaporators (5) are connected through pipelines so as to constitute a low-pressure evaporation circulating deoxidation system, and a high-pressure boiler barrel (8) and evaporators (3) are communicated through pipelines so as to gather steam. A connection pipeline on the water inlet sides of coal economizers (4) is provided with a by-pass valve (10) and a by-pass pipeline (9) which are used for disconnecting the coal economizers (4), the barrel wall of the high-pressure boiler barrel (8) is provided with a saturated steam pipe (11) and a steam adjusting valve (12), the saturated steam pipe (11) is communicated with the low-pressure boiler barrel (7), and flue gas pipes (13) which are directly communicated with each other are arranged in a high-temperature flue gas area and a low-temperature flue gas area of a waste gas boiler (1). The low-pressure evaporation circulating deoxidation system has an enthalpy difference by adjusting system heat exchange parameters; by disconnecting the coal economizers (4), saturated steam is supplied to the low-pressure boiler barrel (7), and high-temperature flue gas in the high-temperature flue gas area of the waste gas boiler (1) is directly guided into the low-temperature flue gas area; thus, the exhaust gas temperature is controlled within a required range, heat balance of the low-pressure evaporation circulating deoxidation system is achieved again, and the whole waste gas boiler is in heat balance.
Description
Technical field
The present invention relates to glass kiln residual heat power field, specifically a kind of glass kiln power generation boiler by waste exhaust gas temperature adjusting device.
Background technology
Known, in power generating system by glass-kiln waste heat, melting furnaces flue gas by waste heat boiler with enter the hydrothermal exchange of waste heat boiler after produce steam supply steam turbine power generation; But flue gas self temperature can be reduced to higher than 10～15 ℃ of left and right of flue gas dew point temperature, then from waste heat boiler, discharges; Owing to being subject to the impact of many differences such as fusing amount, combustion system, fuel type, insulation construction, seal form, the flue gas flow of each melting furnaces and temperature can be not just the same, the actual Gas Parameters of every waste heat boiler can be not consistent with design declared working condition yet, especially after melting furnaces have been adjusted fuel type, the dew-point temperature of flue gas there will be quite significantly variation, causing waste heat boiler can not be under design conditions moves, be to move under thermal nonequilibrium, cause exhaust gas temperature and dew-point temperature poor not within control range.
Summary of the invention
The object of the present invention is to provide glass kiln power generation boiler by waste exhaust gas temperature adjusting device, this device can regulate exhaust gas temperature according to waste heat boiler ruuning situation, and exhaust gas temperature is controlled within the required range, allows waste heat boiler reach thermal balance.
The technical solution adopted for the present invention to solve the technical problems is:
Glass kiln power generation boiler by waste exhaust gas temperature adjusting device, comprises superheater, evaporimeter, economizer and low pressure evaporator in waste heat boiler, the low pressure drum outside low pressure evaporator and waste heat boiler connects and composes low pressure vaporization cycle deaerating type of cycles by pipeline; High pressure drum and evaporimeter outside waste heat boiler converge steam by pipeline communication; By regulating system heat exchange parameter, make low pressure vaporization cycle deaerating type of cycles owe enthalpy; The connecting pipe of described economizer water inlet side is provided with for the bypass valve of off-the-line economizer and bypass duct, the break-make of the open and close controlling bypass duct by bypass valve; Described high pressure drum barrel is provided with the saturated steam pipe that is communicated with low pressure drum, and saturated steam pipe pipeline is provided with steam control valve.
Further, between the high-temperature flue gas district of described waste heat boiler and the residing low-temperature flue gas of low pressure evaporator district, be provided with the fume pipe being directly interconnected, the pipeline of fume pipe is provided with smoke regulating valve.
Further, described exhaust gas temperature adjusting device also comprises DCS system, the smoke discharging pipe of waste heat boiler is provided with the temperature sensor that detects exhaust gas temperature, temperature sensor is as the input of DCS system, and DCS system outputs a control signal to bypass valve, steam control valve and smoke regulating valve according to the exhaust gas temperature detecting.
The invention has the beneficial effects as follows, make low pressure vaporization cycle deaerating type of cycles owe enthalpy, by off-the-line economizer, supplementary saturated vapor, arrive low pressure drum, and directly from the high-temperature flue gas district of waste heat boiler, draw high-temperature flue gas to low-temperature flue gas district, exhaust gas temperature is controlled within the required range, make low pressure vaporization cycle deaerating type of cycles another warm balance, then make whole waste heat boiler thermal balance.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described:
Fig. 1 is structural representation of the present invention;
Fig. 2 is electrical principle block diagram of the present invention.
The specific embodiment
As shown in Figure 1, in waste heat boiler 1, comprise one group of superheater 2, evaporimeter 3, economizer 4 and low pressure evaporator 5; The melting furnaces flue gas of glass furnace enters waste heat boiler 1, after superheater 2, evaporimeter 3, economizer 4 and low pressure evaporator 5, from smoke discharging pipe, discharges; Waste heat boiler 1 outside is provided with low pressure drum 7, low pressure drum 7 comprises oxygen-eliminating device 6, low pressure drum 7 is interconnected by pipeline with low pressure evaporator 5, form low pressure vaporization cycle deaerating type of cycles, the industry water that enters low pressure drum 7 after pipeline enters low pressure evaporator 5 with flue gas heat exchange through low pressure evaporator 5, the steam producing returns to low pressure drum 7 by pipeline, together with oxygen-eliminating device 6, industry water is carried out to deoxygenation; Industry water after deoxygenation enters economizer 4, enters evaporimeter 3 after high pressure drum 8, returns to high pressure drum 8 converge high steam after generation steam along pipeline, and the steam turbine that exports electricity generation system finally by superheater 2 to produces generation driving force;
According to thermodynamic equilibrium principle, can make low pressure vaporization cycle deaerating type of cycles owe enthalpy by following approach: a) on the thermodynamic equilibrium basis having calculated, further to reduce the design pressure of superheater 2 steam (vapor) outlets, even if low pressure vaporization cycle deaerating type of cycles is owed enthalpy; B) on the thermodynamic equilibrium basis having calculated, keep the design pressure of superheater 2 steam (vapor) outlets constant, increase the heat exchange area of evaporimeter 3 and the heat exchange area of increase economizer 4, reduce the heat exchange area of low pressure evaporator 5 simultaneously, make low pressure vaporization cycle deaerating type of cycles owe enthalpy; C) on the thermodynamic equilibrium basis having calculated, reduce the design pressure of superheater 2 steam (vapor) outlets, the heat exchange area that meanwhile increases the heat exchange area of evaporimeter 3, the heat exchange area that increases economizer 4 and minimizing low pressure evaporator 5, makes low pressure vaporization cycle deaerating type of cycles owe enthalpy;
The connecting pipe of economizer 4 water inlet sides is provided with the bypass valve 10 and bypass duct 9 for off-the-line economizer 4, the break-make of the open and close controlling bypass duct 9 by bypass valve 10, off-the-line part economizer as required, make flue gas enter more low pressure evaporator 5, to supplement the heat of low pressure evaporator 5, high pressure drum 8 barrels are provided with the saturated steam pipe 11 that is communicated with low pressure drum 7, saturated steam pipe 11 pipelines are provided with steam control valve 12, control as required steam control valve 12, make the saturated vapor in high pressure drum 8 enter low pressure drum 7, supplement the required heat of low pressure drum 7 deoxygenations, between the high-temperature flue gas district of waste heat boiler 1 and the residing low-temperature flue gas of low pressure evaporator 5 district, be provided with the fume pipe 13 being directly interconnected, the pipeline of fume pipe 13 is provided with smoke regulating valve 14, control as required smoke regulating valve 14, make high-temperature flue gas directly enter low pressure evaporator 5, to supplement the heat of low pressure evaporator 5, shown in Fig. 2, the smoke discharging pipe of waste heat boiler 1 is provided with the temperature sensor 15 that detects exhaust gas temperature, temperature sensor 15 is as the input of DCS system 16, DCS system 16 is according to the enthalpy situation of owing of the exhaust gas temperature judgement low pressure vaporization cycle deaerating type of cycles detecting, and output a control signal to as required bypass valve 10, steam control valve 12 and smoke regulating valve 14, with additional heat, arrive low pressure evaporator 5 and/or low pressure drum 7, exhaust gas temperature is controlled within the required range, make low pressure vaporization cycle deaerating type of cycles thermal balance, then make whole waste heat boiler 1 in thermal balance.
The above, be only preferred embodiment of the present invention, not the present invention done to any pro forma restriction; Any those of ordinary skill in the art, do not departing from technical solution of the present invention scope situation, all can utilize method and the technology contents of above-mentioned announcement to make many possible changes and modification to technical solution of the present invention, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not depart from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, be equal to replacements, equivalence changes and modify, all still belong in the scope that technical solution of the present invention protects.
Claims (3)
1. glass kiln power generation boiler by waste exhaust gas temperature adjusting device, comprises evaporimeter (3), economizer (4) and low pressure evaporator (5) in waste heat boiler (1); Low pressure evaporator (5) connects and composes low pressure vaporization cycle deaerating type of cycles with the low pressure drum (7) outside waste heat boiler (1) by pipeline; The outer high pressure drum (8) of waste heat boiler (1) converges steam with evaporimeter (3) by pipeline communication, by regulating system heat exchange parameter, make low pressure vaporization cycle deaerating type of cycles owe enthalpy, it is characterized in that, the connecting pipe of described economizer (4) water inlet side is provided with for the bypass valve (10) of off-the-line economizer (4) and bypass duct (9), the break-make of the open and close controlling bypass duct (9) by bypass valve (10); Described high pressure drum (8) barrel is provided with the saturated steam pipe (11) that is communicated with low pressure drum (7), and saturated steam pipe (11) pipeline is provided with steam control valve (12).
2. glass kiln power generation boiler by waste exhaust gas temperature adjusting device according to claim 1, it is characterized in that, between the high-temperature flue gas district of described waste heat boiler (1) and the residing low-temperature flue gas of low pressure evaporator (5) district, be provided with the fume pipe (13) being directly interconnected, the pipeline of fume pipe (13) is provided with smoke regulating valve (14).
3. glass kiln power generation boiler by waste exhaust gas temperature adjusting device according to claim 1 and 2, it is characterized in that, described exhaust gas temperature regulating system also comprises DCS system (16), the smoke discharging pipe of waste heat boiler is provided with the temperature sensor (15) that detects exhaust gas temperature, temperature sensor (15) is as the input of DCS system (16), and DCS system (16) outputs a control signal to respectively bypass valve (10), steam control valve (12) and smoke regulating valve (14) according to the exhaust gas temperature detecting.
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| CN201310678779.8A CN103727514B (en) | 2013-12-14 | 2013-12-14 | Glass kiln power generation boiler by waste exhaust gas temperature adjusting device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103968672A (en) * | 2014-05-10 | 2014-08-06 | 蚌埠玻璃工业设计研究院 | Heat exchanging device for glass kiln waste heat power generation denitration system |
| CN106871094A (en) * | 2017-04-06 | 2017-06-20 | 深圳市凯盛科技工程有限公司 | A kind of waste heat boiler of all-oxygen combustion glass furnace |
| CN107013269A (en) * | 2017-05-18 | 2017-08-04 | 中冶华天南京工程技术有限公司 | The heat power generating system recycled based on coke-oven plant's residual heat resources |
| CN106287654B (en) * | 2016-08-10 | 2019-03-08 | 华能北京热电有限责任公司 | A kind of waste heat boiler loop heating system and method |
| CN110986015A (en) * | 2019-11-19 | 2020-04-10 | 深圳市凯盛科技工程有限公司 | Operation method of vertical waste heat boiler for glass melting furnace flue gas treatment |
| CN112066742A (en) * | 2020-08-13 | 2020-12-11 | 深圳市凯盛科技工程有限公司 | Optimization method for utilization of waste heat and generated energy of glass kiln flue gas waste heat power generation |
| CN114063669A (en) * | 2021-11-02 | 2022-02-18 | 东北电力大学 | Reheating temperature automatic regulation and control device for thermal power plant |
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| CN106287654B (en) * | 2016-08-10 | 2019-03-08 | 华能北京热电有限责任公司 | A kind of waste heat boiler loop heating system and method |
| CN106871094A (en) * | 2017-04-06 | 2017-06-20 | 深圳市凯盛科技工程有限公司 | A kind of waste heat boiler of all-oxygen combustion glass furnace |
| CN107013269A (en) * | 2017-05-18 | 2017-08-04 | 中冶华天南京工程技术有限公司 | The heat power generating system recycled based on coke-oven plant's residual heat resources |
| CN110986015A (en) * | 2019-11-19 | 2020-04-10 | 深圳市凯盛科技工程有限公司 | Operation method of vertical waste heat boiler for glass melting furnace flue gas treatment |
| CN112066742A (en) * | 2020-08-13 | 2020-12-11 | 深圳市凯盛科技工程有限公司 | Optimization method for utilization of waste heat and generated energy of glass kiln flue gas waste heat power generation |
| CN112066742B (en) * | 2020-08-13 | 2022-07-26 | 深圳市凯盛科技工程有限公司 | Method for optimizing utilization of waste heat and generated energy of glass kiln flue gas waste heat power generation |
| CN114063669A (en) * | 2021-11-02 | 2022-02-18 | 东北电力大学 | Reheating temperature automatic regulation and control device for thermal power plant |
| CN114063669B (en) * | 2021-11-02 | 2023-03-10 | 东北电力大学 | Reheating temperature automatic regulation and control device for thermal power plant |
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| CN103727514B (en) | 2016-01-20 |
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Address after: 233010 Tushan Road 1047, Yuhui District, Bengbu City, Anhui Province Patentee after: China Building Materials Glass New Materials Research Institute Group Co.,Ltd. Patentee after: Shenzhen Kaisheng Technology Engineering Co.,Ltd. Patentee after: China Triumph International Engineering Co.,Ltd. Address before: 233010 Tushan Road 1047, Yuhui District, Bengbu City, Anhui Province Patentee before: BENGBU DESIGN & Research Institute FOR GLASS INDUSTRY Patentee before: SHENZHEN TRIUMPH TECHNOLOGY ENGINEERING Co.,Ltd. Patentee before: China Triumph International Engineering Co.,Ltd. |
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