CN215177009U - Exhaust-heat boiler of hot stove of ferrosilicon ore - Google Patents
Exhaust-heat boiler of hot stove of ferrosilicon ore Download PDFInfo
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- CN215177009U CN215177009U CN202121023104.6U CN202121023104U CN215177009U CN 215177009 U CN215177009 U CN 215177009U CN 202121023104 U CN202121023104 U CN 202121023104U CN 215177009 U CN215177009 U CN 215177009U
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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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- 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
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model provides a waste heat boiler of hot stove in ferrosilicon ore relates to waste heat boiler technical field. The waste heat boiler comprises a vaporization flue (1), a circulating boiler and accessory equipment, wherein the circulating boiler is designed in an inverted U shape and comprises a superheater (2), a middle smoke box (13), a first evaporator (3), a second evaporator (4), an economizer (5) and a deoxidizing section (6) which are sequentially connected, the circulating boiler further comprises a water circulating system consisting of a lifting pipe (8) and a boiler barrel (10), the lifting pipe (8) comprises an ascending pipe and a descending pipe, and the superheater (2), the first evaporator (3), the second evaporator (4) and the economizer (5) are all composed of a framework, a plurality of fin pipe sets, an inlet header, an outlet header and accessories thereof; each finned tube group is formed by connecting finned tubes with expanded heating surfaces and 180-degree elbows in series and is sequentially arranged along the direction of waste gas. The utility model provides a limited technical problem in equipment fixing space.
Description
Technical Field
The utility model relates to a waste heat boiler technical field, concretely relates to waste heat boiler of hot stove in ferrosilicon ore deposit.
Background
The boiler is an energy converter, which is a device for heating working medium water or other fluids to certain parameters by using heat energy released by fuel combustion or other heat energy. The boiler is divided into a boiler part and a furnace part. The boiler is a pressure-receiving component for containing water and steam, heating, vaporizing and separating water from steam, and the furnace is a place for burning fuel or releasing heat by other heat energy, and comprises combustion equipment, a combustion chamber, a heat-releasing flue and the like. The boiler and the furnace are subjected to a heat conversion process, and the interface of heat release and heat absorption is called a heating surface. The boiler heats the water to steam. Besides the boiler and the furnace, the boiler also comprises auxiliary equipment such as a framework, a platform, an escalator, combustion, slag discharge, a smoke duct, a pipeline, a furnace wall and the like. The flue gas of the existing ferrosilicon and silicomanganese ore hot furnace has the characteristics that: (1) the smoke amount is large; (2) the hot content of the smoke is high; (3) the smoke dust is fine; (4) the proportion of dust in the flue gas is large. Patent CN201922116246.6 discloses a waste heat boiler and a flue gas heat exchange system thereof. The coal economizer comprises a first coal economizer, a second coal economizer, a third coal economizer and a water supply pipeline. The water supply pipeline is used for being communicated with an external main water channel and comprises a first water supply pipeline and a second water supply pipeline. The first water supply pipeline is communicated with the first economizer, the second economizer and the third economizer in sequence, and the second water supply pipeline is communicated with the first economizer and the third economizer. The water supply pipeline has a first state that the first water supply pipeline is conducted and the second water supply pipeline is disconnected; and a second state that the second water supply pipeline is conducted and the first water supply pipeline is disconnected. This patent optimizes the construction of the waste heat boiler and reduces the maintenance costs, but the arrangement of the heating surfaces is limited.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the shortcoming of prior art, a exhaust-heat boiler of the hot stove in ferrosilicon ore is provided. The finned tube has the advantages that the heating surface of the finned tube is increased, and meanwhile, strong turbulence is formed when flue gas flows through the surface of the finned tube, so that the finned tube has the effects of improving heat transfer efficiency and reducing soot accumulation. The technical problem that the equipment installation space is limited is solved.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a waste heat boiler of hot stove of silicon iron ore, includes vaporization flue, circulation boiler and auxiliary assembly, wherein:
the vaporization flue is fixedly arranged on a steel frame of a factory building;
one end of the vaporization flue is a flue gas inlet, and the other end of the vaporization flue is connected with an inlet flue box;
the circulating boiler adopts an inverted U-shaped design and is fixedly arranged on boiler supporting legs, a platform escalator is arranged outside the circulating boiler, and a drum platform escalator and a support are arranged at the top of the circulating boiler;
the circulating boiler comprises a superheater, a middle smoke box, a first evaporator, a second evaporator, an economizer and a deoxidizing section which are sequentially connected;
the circulating boiler also comprises a water circulating system consisting of a lifting pipe and a boiler barrel;
one end of the circulating boiler, which is close to the superheater, is connected with the inlet smoke box, and one end of the circulating boiler, which is close to the oxygen removal section, is connected with the outlet smoke box;
settling chambers are arranged between the circulating boiler and the inlet smoke box and between the circulating boiler and the outlet smoke box;
the lifting pipe comprises a lifting pipe and a descending pipe;
the ascending pipe is arranged in the circulating boiler and consists of water wall pipes, and the descending pipe is arranged outside the circulating boiler;
the superheater, the evaporator I, the evaporator II and the economizer are all composed of a framework, a plurality of fin tube groups, an inlet header, an outlet header and accessories thereof;
each finned tube group is formed by connecting finned tubes with expanded heating surfaces and 180-degree elbows in series, is sequentially arranged along the direction of waste gas, and is welded and fixed on the inlet header and the outlet header;
the extending end of each inlet header is provided with a drain valve;
the extending end of each outlet header is provided with a pressure gauge, a thermometer, an air valve and a safety valve, and the extending end of the outlet header of the superheater is also provided with a pressure transmitter and an air release valve;
a water level control device and a separation baffle are arranged in the boiler barrel.
Alternatively or preferably, the superheater comprises a high temperature superheater and a low temperature superheater.
Optionally or preferably, the inlet smoke box and the outlet smoke box are both welded by steel plates, and are provided with mounting hanging plates and inspection doors.
Optionally or preferably, the inlet header and the outlet header are made of seamless steel tubes, one end of the inlet header and the other end of the outlet header, which are provided with accessories, are welded and fixed with the framework, and the other end of the inlet header and the other end of the outlet header are fixed in a supporting ring of the other side plate of the framework.
Alternatively or preferably, the finned tubes are LHFT series finned tubes with an extended heated surface.
Based on the technical scheme, the following technical effects can be generated:
the utility model provides a pair of exhaust-heat boiler of hot stove of ferrosilicon ore for flue gas waste heat recovery is smelted to the ferrosilicon stove. The utility model discloses a vaporization flue has the effect of buffering the instantaneous fluctuation of high temperature flue gas, exhaust-heat boiler adopts the type of falling U structural arrangement form, utilize the flue gas from the hot stove export in ore deposit, behind the effect of vaporization flue buffering high temperature flue gas instantaneous fluctuation, advance exhaust-heat boiler entry, the flue gas flows from the type of falling U structural arrangement form, flow through the over heater, the evaporimeter, economizer and deoxidization section, the chimney of discharging at last, the heat that emits is used for making water become the superheated steam who satisfies the power generation requirement, then utilize superheated steam to generate electricity, thereby fuel saving, reach economy, energy-conserving purpose. The technical problems that the arrangement of the heating surface of the waste heat boiler is limited and the equipment installation space is limited are solved.
Drawings
Fig. 1 is a schematic structural view (front view) of the present invention;
fig. 2 is a schematic structural view (right side view) of the present invention;
in the figure: 1-a vaporization flue, 2-a superheater, 3-a first evaporator, 4-a second evaporator, 5-an economizer, 6-an oxygen removal section, 7-boiler supporting legs, 8-a lifting pipe, 9-a platform staircase, 10-a drum, 11-an inlet smoke box, 12-a settling chamber, 13-an intermediate smoke box, 14-a drum platform staircase and a support, 15-an outlet smoke box, 16-a factory building steel frame, 17-a smoke inlet, 18-a smoke outlet and 19-a water level control device.
Detailed Description
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.
As shown in fig. 1-2:
the utility model provides a waste heat boiler of hot stove in ferrosilicon ore, including vaporization flue 1, circulating boiler and attached equipment, wherein:
the vaporization flue 1 is fixedly arranged on a factory building steel frame 16;
one end of the vaporization flue 1 is a flue gas inlet 17, the other end of the vaporization flue is connected with an inlet flue box 11, and the vaporization flue 1 has the function of buffering instantaneous fluctuation of high-temperature flue gas;
the circulating boiler adopts an inverted U-shaped design, is installed and fixed on the boiler supporting legs 7, is externally provided with a platform staircase 9, and is provided with a drum platform staircase and a bracket 14 at the top, the inverted U-shaped design enables the flowing direction of the working medium and the waste gas to be opposite, and has the function of improving the heat transfer temperature and pressure of the waste heat boiler;
the circulating boiler comprises a superheater 2, a middle smoke box 13, a first evaporator 3, a second evaporator 4, an economizer 5 and a deoxidizing section 6 which are connected in sequence;
the circulating boiler also comprises a water circulating system consisting of a lifting pipe 8 and a boiler barrel 10;
one end of the circulating boiler, which is close to the superheater 2, is connected with an inlet smoke box 11, and one end of the circulating boiler, which is close to the oxygen removal section 6, is connected with an outlet smoke box 15;
the lifting pipe 8 comprises a lifting pipe and a descending pipe;
the ascending pipe is arranged in the circulating boiler and consists of water wall pipes, the descending pipe is arranged outside the circulating boiler, the density of a steam-water mixture in the ascending pipe is much smaller than that of water in the descending pipe, a working medium can keep flowing by virtue of power generated by the density difference without consuming any external force, the arrangement of a heating surface is not limited at all, and the arrangement of the heating surface is very compact;
the superheater 2, the evaporator I3, the evaporator II 4 and the economizer 5 are all composed of a framework, a plurality of fin tube groups, an inlet header, an outlet header and accessories thereof, so that the exhaust heat of the waste heat boiler can be fully recovered, and the maximum steam yield is obtained;
each finned tube group is formed by serially connecting a finned tube with an expanded heating surface and a 180-degree elbow, is sequentially arranged along the direction of waste gas, is welded and fixed on the inlet header and the outlet header, and can still freely stretch when the finned tube is still capable of stretching, so that the influence on the finned tube group caused by thermal expansion displacement of components is eliminated;
the extending end of each inlet header is provided with a drain valve;
the extending end of each outlet header is provided with a pressure gauge, a thermometer, an air valve and a safety valve, and the extending end of the outlet header of the superheater 2 is also provided with a pressure transmitter and an air release valve;
the water level control device 19 and the separation baffle are arranged in the boiler barrel 10, the water level control device 19 has the functions of providing high-quality steam outwards and supplying water inwards, and the separation baffle can enable steam-water mixture coming out of the evaporator to be separated in the boiler barrel.
As an alternative or preferred embodiment, the superheater 2 comprises a high-temperature superheater and a low-temperature superheater.
Alternatively or preferably, the inlet smoke box 11 and the outlet smoke box 15 are both welded by steel plates, and are provided with installation hanging plates and inspection doors, wherein the installation hanging plates are convenient for hoisting and installation, and the inspection doors can be used for users to enter the interior for maintenance.
Alternatively or preferably, the inlet header and the outlet header are made of seamless steel tubes, and the inlet header and the outlet header are provided with accessories, one end of each inlet header and one end of each outlet header are welded and fixed with the framework, and the other end of each inlet header and the other end of each outlet header are fixed in the supporting ring of the other side plate of the framework.
Alternatively or preferably, the finned tubes are LHFT series finned tubes with expanded heating surfaces, so that the heating surfaces can be greatly increased, and flue gas flowing through the surfaces of the finned tubes forms strong turbulence, thereby improving heat transfer efficiency and reducing soot accumulation.
The utility model provides a waste heat boiler of hot stove in ferrosilicon ore deposit's working process as follows: when the waste heat of the smelting flue gas of the ferrosilicon furnace is recovered, the flue gas enters the vaporization flue 1 from the flue gas inlet 17, the flue gas is buffered by the vaporization flue 1 to be subjected to temperature fluctuation, and then enters the circulating boiler through the inlet smoke box 11 and the settling chamber 12, the circulating boiler is of an inverted U-shaped design, the flue gas sequentially passes through the superheater 2, the middle smoke box 13, the evaporator I3, the evaporator II 4, the economizer 5 and the deoxidization section 6, a water circulating system of the circulating boiler keeps natural circulation by virtue of density difference, a working medium is opposite to the flowing direction of waste gas, the heat transfer temperature and pressure of the waste heat boiler are improved, and the flue gas is discharged from the flue gas outlet 18 through the settling chamber 12 after leaving the circulating boiler. In the process, the temperature of the flue gas is reduced from 480 ℃ to about 170 ℃, the released heat is used for changing water into superheated steam meeting the power generation requirement, qualified steam can be conveyed outwards through a main steam valve, and the rest water continuously participates in circulation and absorbs exhaust waste heat from the first evaporator 3 and the second evaporator 4 again.
Claims (5)
1. The utility model provides a waste heat boiler of hot stove of ferrosilicon ore which characterized in that: comprising a vaporizing flue (1), a circulating boiler and auxiliary equipment, wherein:
the vaporization flue (1) is fixedly arranged on a factory building steel frame (16);
one end of the vaporization flue (1) is provided with a flue gas inlet (17), and the other end is connected with an inlet smoke box (11);
the circulating boiler is designed in an inverted U shape and is fixedly arranged on boiler supporting legs (7), a platform escalator (9) is arranged outside the circulating boiler, and a drum platform escalator and a support (14) are arranged at the top of the circulating boiler;
the circulating boiler comprises a superheater (2), a middle smoke box (13), a first evaporator (3), a second evaporator (4), an economizer (5) and an oxygen removal section (6) which are connected in sequence;
the circulating boiler also comprises a water circulating system consisting of a lifting pipe (8) and a boiler barrel (10);
one end of the circulating boiler, which is close to the superheater (2), is connected with an inlet smoke box (11), and one end of the circulating boiler, which is close to the oxygen removal section (6), is connected with an outlet smoke box (15);
settling chambers (12) are arranged between the circulating boiler and the inlet smoke box (11) and between the circulating boiler and the outlet smoke box (15);
the lifting pipe (8) comprises an ascending pipe and a descending pipe;
the ascending pipe is arranged in the circulating boiler and consists of water wall pipes, and the descending pipe is arranged outside the circulating boiler;
the superheater (2), the evaporator I (3), the evaporator II (4) and the economizer (5) are all composed of a framework, a plurality of fin tube groups, an inlet header, an outlet header and accessories thereof;
each finned tube group is formed by connecting finned tubes with expanded heating surfaces and 180-degree elbows in series, is sequentially arranged along the direction of waste gas, and is welded and fixed on the inlet header and the outlet header;
the extending end of each inlet header is provided with a drain valve;
the extending end of each outlet header is provided with a pressure gauge, a thermometer, an air valve and a safety valve, and the extending end of the outlet header of the superheater (2) is also provided with a pressure transmitter and an air release valve;
a water level control device (19) and a separation baffle are arranged in the boiler barrel (10).
2. The exhaust-heat boiler of the hot stove of ferrosilicon ore of claim 1, characterized in that: the superheater (2) comprises a high-temperature superheater and a low-temperature superheater.
3. The exhaust-heat boiler of the hot stove of ferrosilicon ore of claim 1, characterized in that: the inlet smoke box (11) and the outlet smoke box (15) are both formed by welding steel plates, and mounting hanging plates and inspection doors are arranged on the inlet smoke box and the outlet smoke box.
4. The exhaust-heat boiler of the hot stove of ferrosilicon ore of claim 1, characterized in that: the inlet header and the outlet header are both made of seamless steel tubes, one end of the inlet header and the other end of the outlet header, which are provided with accessories, are welded and fixed with the framework, and the other ends of the inlet header and the outlet header are fixed in a supporting ring of the other side plate of the framework.
5. The exhaust-heat boiler of the hot stove of ferrosilicon ore of claim 1, characterized in that: the finned tubes are LHFT series finned tubes with extended heating surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121023104.6U CN215177009U (en) | 2021-05-13 | 2021-05-13 | Exhaust-heat boiler of hot stove of ferrosilicon ore |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121023104.6U CN215177009U (en) | 2021-05-13 | 2021-05-13 | Exhaust-heat boiler of hot stove of ferrosilicon ore |
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| CN215177009U true CN215177009U (en) | 2021-12-14 |
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| CN202121023104.6U Active CN215177009U (en) | 2021-05-13 | 2021-05-13 | Exhaust-heat boiler of hot stove of ferrosilicon ore |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115183213A (en) * | 2022-06-01 | 2022-10-14 | 四川陆亨能源科技有限公司 | Waste heat recovery mode of waste heat boiler system |
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2021
- 2021-05-13 CN CN202121023104.6U patent/CN215177009U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115183213A (en) * | 2022-06-01 | 2022-10-14 | 四川陆亨能源科技有限公司 | Waste heat recovery mode of waste heat boiler system |
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