CN211119280U - Boiler thermodynamic system - Google Patents
Boiler thermodynamic system Download PDFInfo
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- CN211119280U CN211119280U CN201921264435.1U CN201921264435U CN211119280U CN 211119280 U CN211119280 U CN 211119280U CN 201921264435 U CN201921264435 U CN 201921264435U CN 211119280 U CN211119280 U CN 211119280U
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Abstract
The utility model relates to a boiler thermodynamic system field specifically discloses a boiler thermodynamic system, including boiler drum, overheat system, oxygen-eliminating device, flue gas conveying system, overheat system include high temperature over heater, low temperature over heater, evaporimeter, economizer and remove the oxygen evaporimeter, flue gas conveying system including the flue gas admission line and the flue gas pipeline of giving vent to anger of connecting overheat system, the boiler drum supply water for evaporimeter and economizer to collect the steam that evaporimeter and economizer produced, the steam that removes the oxygen evaporimeter production is collected to the oxygen-eliminating device. The utility model has the advantages that the utility model discloses set up a plurality of evaporimeters, the maximize is to the whole efficiency that has improved boiler waste heat utilization, and thermodynamic system is through replenishing outside low temperature waste heat simultaneously, can increase the low temperature heat of system totality, avoids the high energy low usefulness, has reduced the pinch difference in temperature of boiler.
Description
Technical Field
The utility model relates to a waste heat recovery field particularly, relates to a boiler thermodynamic system.
Background
The energy consumption of the industrial process is mainly fuel and electric power, the utilization rate of the fuel is 30-40%, a large amount of residual energy is generated, and most of the residual energy exists in the form of waste gas waste heat. If waste gas waste heat resources are not recycled, not only energy is wasted, but also the environment is polluted. The waste gas and waste heat resources in the industrial process are utilized to build the waste heat power station, waste materials can be changed into valuable materials, the method is an energy-saving environment-friendly comprehensive utilization technology transformation project, and the economic benefit, the environment-friendly benefit and the social benefit are very obvious.
Heavy oil, natural gas, coal gas and the like are generally used as fuels in melting furnaces of the glass industry, and flue gas formed by burning the fuels in the furnaces is discharged out of the furnaces, namely, waste gas and waste heat resources are generated. The waste gas of the float glass melting furnace belongs to waste heat of medium-temperature waste gas, the temperature is 450-550 ℃, the flow of the waste gas is less, the heat level is lower, the heat recovery cost is higher, the parameters (temperature, flow and pressure) of the waste gas waste heat have certain fluctuation, the fluctuation range is large, the construction scale of a single glass production line of most glass factories is not large, the waste heat of the glass melting furnace is relatively limited, the unit investment of a waste heat power generation project is large, the return on investment period is long, the scale of waste gas waste heat resources of the float glass melting furnace is relatively less than that of the cement industry, at present, the domestic and foreign glass industries mainly adopt a heat utilization recovery way, namely, a heat pipe type waste heat boiler is arranged, part of waste gas heat energy is recovered. The waste heat boiler is used for generating saturated steam, providing the saturated steam for heating heavy oil or bearing heating heat load, or being matched with a small-scale low-temperature low-pressure waste heat power generation device, the heat utilization efficiency and the power generation device efficiency are low, and the system stability is poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a boiler thermodynamic system to solve above-mentioned problem.
For realizing the purpose of the utility model, the technical proposal adopted is that: the utility model provides a boiler thermodynamic system, its includes boiler drum, overheat system, oxygen-eliminating device, flue gas conveying system, overheat system include high temperature over heater, low temperature over heater, evaporimeter, economizer and remove the oxygen evaporimeter, flue gas conveying system give vent to anger the pipeline including the flue gas admission line and the flue gas of connecting overheat system, the boiler drum supply water for evaporimeter and economizer to collect the steam that evaporimeter and economizer produced, the steam that removes the oxygen evaporimeter production is collected to the oxygen-eliminating device.
The boiler is provided with a flue gas inlet and a flue gas outlet, the flue gas inlet is connected with a flue gas inlet pipeline, the flue gas outlet is connected with a flue gas outlet pipeline, a boiler steam drum is connected with a water inlet of the evaporator through a water pipe, the gas outlet end of the evaporator is connected with a boiler steam drum through a gas outlet pipe A, the boiler steam drum is connected with the inlet end of the low-temperature superheater through the economizer, the gas outlet end of the low-temperature superheater is connected with the gas inlet end of the high-temperature superheater through a steam pipe B, the water outlet end of the economizer is connected with the boiler steam drum through a water supply pipeline, the water inlet end of the economizer is connected with the boiler steam drum through a water pipe, and the inlet of the oxygen removal evaporator is connected with the oxygen remover through a water supply pipeline of a water tank of the oxygen remover, the outlet of the oxygen removal evaporator is connected with the oxygen remover through an air outlet pipe B.
Specifically, a desuperheater is arranged on a steam pipeline B connected with the low-temperature superheater and the high-temperature superheater, and the desuperheater is connected with a deaerator through a water supply pipeline.
Specifically, the flue gas outlet pipeline is connected with a fan, and the fan is connected with a chimney through an air supply pipeline.
Specifically, the fan includes direct current fan and interchange fan, direct current fan and interchange fan parallelly connected the setting and interlock each other.
Specifically, the water supply pipeline is provided with a water supply pump, the water supply pump comprises a direct-current water supply pump and an alternating-current water supply pump, and the direct-current water supply pump and the alternating-current water supply pump are connected in parallel and are mutually interlocked.
Specifically, the air outlet end of the high-temperature superheater is connected with a high-temperature steam conveying pipeline to convey high-temperature steam to plant users.
Specifically, the flue gas inlet pipeline is divided into two paths, one path is connected with the boiler, and the other path is connected with the chimney through the flue gas delivery pipeline.
Specifically, the evaporators are provided in plurality and independent of each other.
Specifically, the coal economizer is provided with a plurality of coal economizers which are connected in series.
Specifically, the inlet end of the economizer is also connected with a water delivery pipe.
The beneficial effects of the utility model are that, the utility model discloses set up a plurality of evaporimeters, the maximize is to the whole efficiency that has improved boiler waste heat utilization, and thermodynamic system can increase the low temperature heat of system totality through replenishing outside low temperature waste heat simultaneously, avoids the high energy low usefulness, has reduced the pinch point difference in temperature of boiler.
Drawings
Fig. 1 is a schematic diagram of the system structure of the present invention;
in the figure: 1-boiler drum, 2-air outlet pipe A, 3-water conveying pipe, 4-boiler, 5-air outlet pipe B, 6-deaerator, 7-water feeding pipe, 8-alternating current water feeding pump, 9-direct current water feeding pump, 10-chimney, 11-direct current fan, 12-alternating current fan, 13-flue gas outlet pipe, 14-smoke feeding pipe, 15-desuperheater, 16-high temperature steam conveying pipe, 17-flue gas inlet pipe, 18-high temperature superheater, 19-low temperature superheater, 20-evaporator, 21-deaerator water tank water feeding pipe, 22-coal economizer, 23-deaerator, and 24-water feeding pipe.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments and with reference to the accompanying drawings.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
FIG. 1 shows a boiler thermodynamic system, which comprises a boiler 4, a boiler drum 1 and a deaerator 6, wherein the boiler 4 is provided with a flue gas inlet and a flue gas outlet, the flue gas inlet is connected with a flue gas inlet pipeline 17, the flue gas outlet is connected with a flue gas outlet pipeline 13, the boiler 4 is internally provided with a high temperature superheater 18, a low temperature superheater 19, an evaporator 20, an economizer 22 and an oxygen removal evaporator 23, the boiler drum 1 is connected with a water inlet of the evaporator 20 through a water pipe 3, the gas outlet end of the evaporator 20 is connected with the boiler drum 1 through a gas outlet pipe A2, the evaporator 20 is a heat exchange surface formed by arranging serpentine light tubes, absorbs the heat of the flue gas after the low temperature superheater 19 and heats the hot water from the economizer 22 into saturated steam, the boiler drum 1 is connected with the inlet end of the low temperature superheater 19 through the economizer 22, the outlet end of the low-temperature superheater 19 is connected with the inlet end of the high-temperature superheater 18 through a steam pipeline B, the high-temperature superheater 18 is a heat exchange surface arranged by a coiled pipe and is used for absorbing the heat of flue gas entering from a flue gas inlet and further superheating the steam from the low-temperature superheater 19 to reach the required temperature, the low-temperature superheater 19 is a heat exchange surface arranged by a coiled pipe and is used for absorbing the heat of the flue gas after the high-temperature superheater 18 and heating saturated steam from a steam drum 1 to a certain superheating degree, the outlet end of the economizer 22 is connected with the boiler steam drum 1 through a water supply pipeline 24, the water inlet end of the economizer 22 is connected with the boiler steam drum 1 through a water conveying pipe 3, the economizer 22 is a heating surface consisting of a steel pipe or a cast iron pipe and is arranged in a flue at the tail of the boiler, and is used for heating feed water by using the heat of the low-temperature flue gas at, the thermal efficiency of the boiler is improved, the inlet of the oxygen removal evaporator 23 is connected with the oxygen remover 6 through the water supply pipeline 21 of the oxygen remover water tank, and the outlet of the oxygen removal evaporator 23 is connected with the oxygen remover 6 through the air outlet pipe B5.
Further, steam pipe B that low temperature over heater 19 and high temperature over heater 18 be connected on be provided with desuperheater 15, desuperheater 15 connect oxygen-eliminating device 6 through water supply pipe 7, the oxygen-eliminating device is provided with the oxygen-eliminating device water tank for store the deoxidization water, carry the deoxidization water for the desuperheater, the difference of balanced equipment feed water volume and the feed water volume that comes from the outside to the boiler.
Further, the flue gas outlet pipeline 13 is connected with a fan, the fan is connected with the chimney 10 through an air supply pipeline, the fan comprises a direct current fan 11 and an alternating current fan 12, the direct current fan 11 and the alternating current fan 12 are arranged in parallel and are mutually interlocked, the alternating current fan 12 is generally used for conveying flue gas during working, when power failure is caused due to sudden accidents, the direct current fan 11 which is supplied with power by a storage battery is automatically switched to continue conveying the flue gas, safe operation of the system is guaranteed through the arrangement, and reliability of the system is improved.
Further, the water supply pipeline 7 on be provided with the feed pump, the feed pump includes direct current feed pump 9 and interchange feed pump 8, direct current feed pump 9 and interchange feed pump 8 parallel arrangement and mutual interlocking, generally use interchange feed pump 8 to carry out the supply of water at the during operation, when meetting the accident and leading to the outage, automatic switch-over to the direct current feed pump 9 of battery power supply, continue to carry out the supply of water, the safe operation of system has been guaranteed in the setting like this, the reliability of system has been improved.
Further, the air outlet end of the high-temperature superheater 18 is connected with a high-temperature steam conveying pipeline 16, and the high-temperature steam is conveyed to users in the plant area.
Furthermore, the flue gas inlet pipeline 17 is divided into two paths, one path is connected with the boiler 4, and the other path is connected with the chimney 10 through the flue gas delivery pipeline 14.
Further, evaporator 20 be provided with a plurality ofly and mutually independent, set up a plurality of evaporators 20, the maximize absorbs the waste heat of flue gas, improves the utilization ratio of waste heat.
Further, the economizer 22 is provided in plurality and is arranged in series.
Further, the inlet end of the economizer 22 is also connected with the water delivery pipe 3.
The installation positions of the high-temperature superheater 18, the low-temperature superheater 19, the evaporator 20, the economizer 22 and the oxygen removal evaporator 23 in the boiler 4 are that the high-temperature superheater 18, the low-temperature superheater 19, the evaporator 20, the economizer 22 and the oxygen removal evaporator 23 are arranged in sequence from near to far away from a smoke inlet, and a smoke outlet is arranged at one end of the oxygen removal evaporator.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made by those skilled in the art within the spirit and principle of the present invention, and these equivalent modifications or replacements are included in the protection scope of the present invention.
Claims (10)
1. A boiler thermodynamic system is characterized by comprising a superheating system, a boiler steam drum (1), a flue gas conveying system and a deaerator (6);
the flue gas conveying system comprises a flue gas inlet pipeline (17) connected with a flue gas inlet of the boiler (4) and a flue gas outlet pipeline (13) connected with a flue gas outlet;
the superheating system comprises a high-temperature superheater (18), a low-temperature superheater (19), an evaporator (20), an economizer (22) and an oxygen removal evaporator (23) which are arranged in a boiler (4), the boiler steam drum (1) supplies water for the evaporator (20) and the economizer (22) and collects steam generated by the evaporator (20) and the economizer (22), and the oxygen removal device (6) collects steam generated by the oxygen removal evaporator (23) and supplies water for the economizer;
the high-temperature superheater (18) outputs high-temperature steam.
2. A boiler thermodynamic system according to claim 1, wherein the boiler drum (1) is connected to the water inlet of the evaporator (20) by means of a water duct (3), the air outlet end of the evaporator (20) is connected with a boiler steam drum (1) through an air outlet pipe A (2), the boiler steam drum (1) is connected with the inlet end of a low-temperature superheater (19) through an economizer (22), the outlet end of the low-temperature superheater (19) is connected with the inlet end of a high-temperature superheater (18) through a steam pipeline B, the water outlet end of the coal economizer (22) is connected with the boiler steam drum (1) through a water supply pipeline (24), the water inlet end of the coal economizer (22) is connected with the boiler steam drum (1) through a water conveying pipe (3), the inlet of the oxygen removal evaporator (23) is connected with the oxygen remover (6) through a water supply pipeline (21) of a water tank of the oxygen remover, the outlet of the oxygen removal evaporator (23) is connected with a deaerator (6) through an air outlet pipe B (5).
3. A boiler thermodynamic system as claimed in claim 2, wherein a desuperheater (15) is arranged on a steam pipeline B connecting the low temperature superheater (19) and the high temperature superheater (18), and the desuperheater (15) is connected with the deaerator (6) through a water supply pipeline (7).
4. The boiler thermodynamic system according to claim 2, wherein the flue gas outlet pipe (13) is connected to a fan, the fan is connected to the chimney (10) through a supply pipe, the fan comprises a dc fan (11) and an ac fan (12), and the dc fan (11) and the ac fan (12) are connected in parallel and interlocked with each other.
5. A boiler thermodynamic system as claimed in claim 3, wherein the feed water pipe (7) is provided with a feed water pump, the feed water pump comprises a direct-current feed water pump (9) and an alternating-current feed water pump (8), and the direct-current feed water pump (9) and the alternating-current feed water pump (8) are arranged in parallel and interlocked with each other.
6. A boiler thermodynamic system according to claim 2, wherein the outlet of the high temperature superheater (18) is connected to a high temperature steam delivery pipeline (16) for delivering high temperature steam to the plant users.
7. A boiler thermodynamic system as claimed in claim 2, wherein the flue gas inlet duct (17) is divided into two paths, one path is connected to the boiler (4) and the other path is connected to the chimney (10) via the flue gas delivery duct (14).
8. A boiler thermodynamic system according to claim 2, wherein the evaporators (20) are provided in plurality and independently of each other.
9. A boiler thermodynamic system according to claim 2, wherein the economizers (22) are provided in plurality and in series.
10. A boiler thermodynamic system according to claim 2, wherein the inlet end of the economizer (22) is further connected to the water delivery pipe (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921264435.1U CN211119280U (en) | 2019-08-06 | 2019-08-06 | Boiler thermodynamic system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921264435.1U CN211119280U (en) | 2019-08-06 | 2019-08-06 | Boiler thermodynamic system |
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| CN211119280U true CN211119280U (en) | 2020-07-28 |
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| CN201921264435.1U Active CN211119280U (en) | 2019-08-06 | 2019-08-06 | Boiler thermodynamic system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111961799A (en) * | 2020-08-27 | 2020-11-20 | 江苏热盾节能环保科技有限公司 | Converter flue gas high-temperature cyclone dust removal waste heat boiler integrated device and method |
-
2019
- 2019-08-06 CN CN201921264435.1U patent/CN211119280U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111961799A (en) * | 2020-08-27 | 2020-11-20 | 江苏热盾节能环保科技有限公司 | Converter flue gas high-temperature cyclone dust removal waste heat boiler integrated device and method |
| CN111961799B (en) * | 2020-08-27 | 2021-11-19 | 江苏热盾节能环保科技有限公司 | Converter flue gas high-temperature cyclone dust removal waste heat boiler integrated device and method |
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Address after: Joaquin Avenue in Qingbaijiang District of Chengdu city of Sichuan Province in 610000 section of No. 501 Patentee after: Cecep (Chengdu) Energy Technology Service Co.,Ltd. Address before: Joaquin Avenue in Qingbaijiang District of Chengdu city of Sichuan Province in 610000 section of No. 501 Patentee before: CHENGDU QINGBAIJIANG DISTRICT TAIBO ELECTRIC POWER CO.,LTD. |