CN103968672A - Heat exchanging device for glass kiln waste heat power generation denitration system - Google Patents
Heat exchanging device for glass kiln waste heat power generation denitration system Download PDFInfo
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- CN103968672A CN103968672A CN201410194859.0A CN201410194859A CN103968672A CN 103968672 A CN103968672 A CN 103968672A CN 201410194859 A CN201410194859 A CN 201410194859A CN 103968672 A CN103968672 A CN 103968672A
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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 invention discloses a heat exchanging device for a glass kiln waste heat power generation denitration system. The heat exchanging device comprises a heat exchanging shell body. A superheater (4) and an evaporator (5) are arranged in the heat exchanging shell body in sequence. An inlet of a heat exchanging device is communicated with high-temperature smoke. An outlet of the heat exchanging device is communicated with an inlet of the denitration system (2). An outlet of the denitration system (2) is communicated with a smoke inlet pipe (6). An outlet of the evaporator (5) is communicated with an ascending pipe of a waste heat boiler. An inlet of the evaporator (5) is communicated with a descending pipe of the waste heat boiler. An inlet and an outlet of the superheater are communicated with superheated steam pipes respectively. By heat exchanging of high-temperature smoke through the superheater and the evaporator, the purpose that the denitration system provides smoke which meets the temperature requirement is achieved, meanwhile, the evaporator is connected in parallel with an evaporating system of the waste heat boiler, the superheater is connected in series with an overheating system of the waste heat boiler, heat of the high-temperature smoke is fully used, real-time adjusting is carried out through a set DCS, heat loss caused by direct cooling denitration of the high-temperature smoke is avoided, and the heat exchanging device is used for minimization of superheated steam output reducing amount of power generation.
Description
Technical field
The present invention relates to glass kiln residual heat power field, specifically a kind of heat-exchanger rig for glass kiln residual heat generating denitrating system.
Background technology
Known, glass kiln power generation boiler by waste is widely used in cogeneration field, improve the utilization ratio of flue gas, but the nitrogen oxide in flue gas can cause adverse influence to environment, so in order to meet the discharge index to nitrogen oxide in " flat glass industry atmosphere pollutants emission standards ", this implements out of stock system engineering with regard to the flue gas that requires glass melter to produce melting furnaces, generally all adopt SCR method to carry out denitration processing to flue gas, for existing glass kiln power generation boiler by waste, if its inside is transformed to the interface that increases the required empty smoke box of denitration and flue gas turnover boiler, on the one hand, the structural steel bearing capacity of original boiler and foundation bearing capacity differ and adapt to surely the situation of boiler loading skew and loading increase, the duration of boiler improvement at least needs three months on the other hand, have a strong impact on power benefit, so general flue gas of first glass furnace being discharged carries out denitration at present, and then send into waste heat boiler, but the flue-gas temperature that glass furnace is discharged is between 400～600 DEG C, and the flue-gas temperature of the required denitration of denitrating system is generally at 330～380 DEG C, how to provide suitable flue-gas temperature just to become major issue to denitrating system.
Summary of the invention
The object of the present invention is to provide a kind of heat-exchanger rig for glass kiln residual heat generating denitrating system, the high-temperature flue gas that this heat-exchanger rig can be discharged glass furnace carries out heat exchange, the flue gas of satisfied temperature requirement is provided to denitrating system, and can avoid high-temperature flue gas directly to lower the temperature thermal losses that denitration brings, the superheated steam output reduction that is used in generating minimizes.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of heat-exchanger rig for glass kiln residual heat generating denitrating system, the high-temperature flue gas of glass furnace output enters waste heat boiler by entering fume pipe, enter fume pipe and be provided with into cigarette shut-off valve, waste heat boiler is exported superheated steam by overheated steam pipe, and overheated steam pipe is provided with steam control valve;
A. described heat-exchanger rig comprises heat exchange housing, is provided with successively superheater and evaporimeter in heat exchange housing; The entrance of heat-exchanger rig is communicated with into fume pipe by heat exchange smoke-intake pipe, and the outlet of heat-exchanger rig is by the entrance of pipeline communication denitrating system, and the outlet of denitrating system is communicated with the fume pipe that enters that enters the outlet of cigarette shut-off valve by denitration pipe; On the pipeline of described heat exchange smoke-intake pipe and denitration pipe, be respectively equipped with heat exchange shut-off valve and denitration shut-off valve;
B. in described heat-exchanger rig, the outlet of evaporimeter is connected with the tedge of waste heat boiler by heat exchange tedge, and the entrance of evaporimeter is connected with the down-comer of waste heat boiler by heat exchange down-comer; On the pipeline of described heat exchange tedge and heat exchange down-comer, be respectively equipped with the first electric control valve and the second electric control valve;
C. in described heat-exchanger rig the entrance of superheater with outlet respectively by entering steam pipe and going out steam pipe and be connected with overheated steam pipe; Described enter steam pipe with go out on the pipeline of steam pipe to be respectively equipped with the 3rd electric control valve and the 4th electric control valve;
D. described superheater smoke inlet and outlet are respectively equipped with the first temperature sensor and the second temperature sensor, described evaporator outlet is provided with three-temperature sensor, and described superheater steam inlet and outlet are respectively equipped with the 4th temperature sensor and the 5th temperature sensor; The outlet of overheated steam pipe is provided with the 6th temperature sensor that detects superheated steam outlet temperature;
E. described heat-exchanger rig also comprises DCS system, the first temperature sensor, the second temperature sensor, three-temperature sensor, the 4th temperature sensor, the 5th temperature sensor are connected with the input interface of DCS system respectively with the 6th temperature sensor, and the output interface of DCS system connects respectively into cigarette shut-off valve, steam control valve, heat exchange shut-off valve, denitration shut-off valve, the first electric control valve, the second electric control valve, the 3rd electric control valve and the 4th electric control valve.
The invention has the beneficial effects as follows, the heat exchange to high-temperature flue gas by superheater in heat-exchanger rig and evaporimeter, realize the object that satisfied temperature requirement flue gas is provided to denitrating system, evaporimeter is in parallel with the vapo(u)rization system of waste heat boiler simultaneously, superheater is connected with the superheating system of waste heat boiler, makes full use of the heat of high-temperature flue gas, and regulates in real time by DCS system, avoid high-temperature flue gas directly to lower the temperature thermal losses that denitration brings, the superheated steam output reduction that is used in generating minimizes.
Brief description of the drawings
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.
Detailed description of the invention
As shown in Figure 1, the high-temperature flue gas of glass furnace output enters waste heat boiler 1 by entering fume pipe 6, enters fume pipe 6 and is provided with into cigarette shut-off valve 7, and waste heat boiler 1 is exported superheated steam by overheated steam pipe 8, and overheated steam pipe 8 is provided with steam control valve 9; Heat-exchanger rig provided by the invention comprises heat exchange housing 3, is provided with successively superheater 4 and evaporimeter 5 in heat exchange housing 3; The entrance of heat-exchanger rig is communicated with into fume pipe 6 by heat exchange smoke-intake pipe 10, and the outlet of heat-exchanger rig is by the entrance of pipeline communication denitrating system 2, the outlet of denitrating system 2 by denitration pipe 12 with enter the fume pipe 6 that enters that cigarette shut-off valve 7 exports and be communicated with; On the pipeline of described heat exchange smoke-intake pipe 10 and denitration pipe 12, be respectively equipped with heat exchange shut-off valve 11 and denitration shut-off valve 13; In described heat-exchanger rig, the outlet of evaporimeter 5 is connected with the tedge 14 of waste heat boiler 1 by heat exchange tedge 13, and the entrance of evaporimeter 5 is connected with the down-comer 16 of waste heat boiler 1 by heat exchange down-comer 15; On the pipeline of described heat exchange tedge 13 and heat exchange down-comer 15, be respectively equipped with the first electric control valve 17 and the second electric control valve 18; In described heat-exchanger rig the entrance of superheater 4 with outlet respectively by entering steam pipe 19 and going out steam pipe 20 and be connected with overheated steam pipe 8; Described enter steam pipe 19 with go out on the pipeline of steam pipe 20 to be respectively equipped with the 3rd electric control valve 21 and the 4th electric control valve 22; Described superheater 4 smoke inlets and outlet are respectively equipped with the first temperature sensor T1 and the second temperature sensor T2, described evaporimeter 5 outlets are provided with three-temperature sensor T3, and described superheater 4 steam inlets and outlet are respectively equipped with the 4th temperature sensor T4 and the 5th temperature sensor T5; The outlet of overheated steam pipe 8 is provided with the 6th temperature sensor T6 that detects superheated steam outlet temperature; Shown in Fig. 2, described heat-exchanger rig also comprises DCS system 23, the first temperature sensor T1, the second temperature sensor T2, three-temperature sensor T3, the 4th temperature sensor T4, the 5th temperature sensor T5 are connected with the input interface of DCS system 23 respectively with the 6th temperature sensor T6, and the output interface of DCS system 23 connects respectively into cigarette shut-off valve 7, steam control valve 9, heat exchange shut-off valve 11, denitration shut-off valve 13, the first electric control valve 17, the second electric control valve 15, the 3rd electric control valve 21 and the 4th electric control valve 22.
When work, if do not need to use denitrating system 2, DCS system 23 is controlled and is closed heat exchange shut-off valve 11 and denitration shut-off valve 13 so, opens into cigarette shut-off valve 7, and high-temperature flue gas is directly entered in waste heat boiler 1 without denitrating system 2, in the time that needs use denitrating system 2, DCS system 23 is controlled and is opened heat exchange shut-off valve 11 and denitration shut-off valve 13, closes into cigarette shut-off valve 7, and heat-exchanger rig and denitrating system 2 are come into operation, high-temperature flue gas enters heat-exchanger rig by heat exchange smoke-intake pipe 10, after the heat exchange of superheater 4 and evaporimeter 5, the flue gas of output ideal temperature enters denitrating system 2, denitrating system 2 carries out after denitration processing, flue gas being exported to into fume pipe 6 from denitration pipe 12 to flue gas, then feeds waste heat boiler 1 and use, in this process, the boiler feedwater entering in high pressure drum 24 enters heat exchange down-comer 16 through down-comer 16, then enters evaporimeter 5 heat exchange, and the saturated vapor after heat exchange enters tedge 14 through heat exchange tedge 13, then enter high pressure drum 24, realize the heat exchange of flue gas and normal-temperature water, the superheating system that saturated vapor in high pressure drum 24 enters in waste heat boiler 1 produces after superheated steam, it is overheated that the superheater 4 that is entered heat-exchanger rig by overheated steam pipe 8 through entering steam pipe 19 carries out secondary, to improve the temperature of superheated steam, meet the needs of steam turbine power generation, steam after overheated exports overheated steam pipe 8 to through going out steam pipe 20, then exports generating by overheated steam pipe 8, in this process, DCS system 23 is according to the superheater entrance flue gas temperature of the first temperature sensor T1 feedback, the superheater exit gas temperature of the second temperature sensor T2 feedback, the evaporator outlet flue-gas temperature of three-temperature sensor T3 feedback, the superheater outlet steam temperature of the superheater inlet steam temperature of the 4th temperature sensor T4 feedback and the 5th temperature sensor T5 feedback, control and regulation steam control valve 9 in real time, the first electric control valve 17, the second electric control valve 18, the 3rd electric control valve 21 and the 4th electric control valve 22, regulate and participate in the discharge of heat exchange and participate in the overheated steam flow of secondary, when providing the flue gas of satisfied temperature requirement to denitrating system, avoid high-temperature flue gas directly to lower the temperature thermal losses that denitration brings, the superheated steam output reduction that is used in generating minimizes.
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 variations 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 change and modify, all still belong to technical solution of the present invention protect scope in.
Claims (1)
1. the heat-exchanger rig for glass kiln residual heat generating denitrating system, the high-temperature flue gas of glass furnace output enters waste heat boiler (1) by entering fume pipe (6), entering fume pipe (6) is provided with into cigarette shut-off valve (7), waste heat boiler (1) is by overheated steam pipe (8) output superheated steam, overheated steam pipe (8) is provided with steam control valve (9), it is characterized in that:
A. described heat-exchanger rig comprises heat exchange housing (3), is provided with successively superheater (4) and evaporimeter (5) in heat exchange housing (3); The entrance of heat-exchanger rig is communicated with into fume pipe (6) by heat exchange smoke-intake pipe (10), the outlet of heat-exchanger rig is by the entrance of pipeline communication denitrating system (2), and the outlet of denitrating system (2) is communicated with the fume pipe (6) that enters that enters cigarette shut-off valve (7) exit by denitration pipe (12); On the pipeline of described heat exchange smoke-intake pipe (10) and denitration pipe (12), be respectively equipped with heat exchange shut-off valve (11) and denitration shut-off valve (13);
B. in described heat-exchanger rig, the outlet of evaporimeter (5) is connected with the tedge (14) of waste heat boiler (1) by heat exchange tedge (13), and the entrance of evaporimeter (5) is connected with the down-comer (16) of waste heat boiler (1) by heat exchange down-comer (15); On the pipeline of described heat exchange tedge (13) and heat exchange down-comer (15), be respectively equipped with the first electric control valve (17) and the second electric control valve (18);
C. in described heat-exchanger rig the entrance of superheater (4) with outlet respectively by entering steam pipe (19) and going out steam pipe (20) and be connected with overheated steam pipe (8); Described enter steam pipe (19) with go out on the pipeline of steam pipe (20), to be respectively equipped with the 3rd electric control valve (21) and the 4th electric control valve (22);
D. described superheater (4) smoke inlet and outlet are respectively equipped with the first temperature sensor (T1) and the second temperature sensor (T2), described evaporimeter (5) outlet is provided with three-temperature sensor (T3), and described superheater (4) steam inlet and outlet are respectively equipped with the 4th temperature sensor (T4) and the 5th temperature sensor (T5); The outlet of overheated steam pipe (8) is provided with the 6th temperature sensor (T6) that detects superheated steam outlet temperature;
E. described heat-exchanger rig also comprises DCS system (23), the first temperature sensor (T1), the second temperature sensor (T2), three-temperature sensor (T3), the 4th temperature sensor (T4), the 5th temperature sensor (T5) is connected with the input interface of DCS system (23) respectively with the 6th temperature sensor (T6), the output interface of DCS system (23) connects respectively into cigarette shut-off valve (7), steam control valve (9), heat exchange shut-off valve (11), denitration shut-off valve (13), the first electric control valve (17), the second electric control valve (18), the 3rd electric control valve (21) and the 4th electric control valve (22).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410194859.0A CN103968672B (en) | 2014-05-10 | 2014-05-10 | A kind of heat-exchanger rig for glass kiln residual heat generating denitrating system |
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| CN201410194859.0A CN103968672B (en) | 2014-05-10 | 2014-05-10 | A kind of heat-exchanger rig for glass kiln residual heat generating denitrating system |
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| CN103968672A true CN103968672A (en) | 2014-08-06 |
| CN103968672B CN103968672B (en) | 2015-08-26 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315865A (en) * | 2014-09-30 | 2015-01-28 | 盐城市锅炉制造有限公司 | Natural gas floating method glass kiln furnace smoke gas environment-friendly government and afterheat recovery system |
| CN110186021A (en) * | 2019-05-30 | 2019-08-30 | 四川川润动力设备有限公司 | A kind of glass waste heat boiler improving denitration efficiency |
| 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 |
| CN112902682A (en) * | 2021-02-23 | 2021-06-04 | 深圳市凯盛科技工程有限公司 | High temperature kiln flue gas waste heat recovery system |
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| CN103727514A (en) * | 2013-12-14 | 2014-04-16 | 蚌埠玻璃工业设计研究院 | Exhaust gas temperature adjusting device of waste heat power generation boiler of glass kiln |
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| JP2006064291A (en) * | 2004-08-26 | 2006-03-09 | Nippon Steel Corp | Non-catalytic denitrification method and non-catalytic denitrification device for in-boiler gas |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104315865A (en) * | 2014-09-30 | 2015-01-28 | 盐城市锅炉制造有限公司 | Natural gas floating method glass kiln furnace smoke gas environment-friendly government and afterheat recovery system |
| CN110186021A (en) * | 2019-05-30 | 2019-08-30 | 四川川润动力设备有限公司 | A kind of glass waste heat boiler improving denitration efficiency |
| 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 |
| CN112902682A (en) * | 2021-02-23 | 2021-06-04 | 深圳市凯盛科技工程有限公司 | High temperature kiln flue gas waste heat recovery system |
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| CN103968672B (en) | 2015-08-26 |
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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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