CN217441593U - Ultrahigh-temperature, ultrahigh-pressure and dry quenching waste heat power generation multistage temperature reduction water system - Google Patents
Ultrahigh-temperature, ultrahigh-pressure and dry quenching waste heat power generation multistage temperature reduction water system Download PDFInfo
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- CN217441593U CN217441593U CN202220997835.9U CN202220997835U CN217441593U CN 217441593 U CN217441593 U CN 217441593U CN 202220997835 U CN202220997835 U CN 202220997835U CN 217441593 U CN217441593 U CN 217441593U
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Abstract
The utility model relates to a dry quenching waste heat power generation technical field especially relates to an ultra-temperature, superhigh pressure, multistage cooling water system of dry quenching waste heat power generation. The low-temperature superheater, the superheater intermediate desuperheater, the high-temperature superheater, the high-pressure cylinder of the steam turbine generator unit, the low-temperature reheater, the reheater intermediate desuperheater, the high-temperature reheater, the low-pressure cylinder of the steam turbine generator unit, the condenser, the demineralized water tank and the deaerator are sequentially connected with a boiler feed pump through pipelines; the boiler water supply pump is connected with the boiler water supply assembly, the desuperheater between the superheaters and the desuperheater and decompressor for the high-pressure bypass, and the high-pressure bypass is connected with the desuperheater between the reheaters by the desuperheater and decompressor; the deaerator is connected with the temperature and pressure reducing device pipeline for the low-pressure bypass, and the temperature and pressure reducing device for the low-pressure bypass, the temperature and pressure reducing device for the condenser and the desalting water tank are sequentially connected through pipelines. Can supply all levels of temperature-reducing water in a gradient way to the maximum extent, avoids additionally arranging a temperature-reducing water pump and avoids the cavitation phenomenon of a deoxidizing water-feeding pump caused by high-temperature condensed water.
Description
Technical Field
The utility model relates to a dry quenching waste heat power generation technical field especially relates to an ultra-temperature, superhigh pressure, multistage cooling water system of dry quenching waste heat power generation.
Background
At present, along with the popularization and application of a large-volume coke oven technology, the capacity of a dry quenching device is greatly improved, the maximum quenching capacity reaches 260t/h, if the dry quenching device corresponds to a high-temperature high-pressure dry quenching waste heat power generation technology, the generated energy is about 40800 kw.h, the unit installation capacity is 45MW, along with the miniaturization of a high-parameter reheating unit in the thermal power generation industry, the parameters reach ultrahigh temperature and ultrahigh pressure, the unit installation capacity is detected to 40MW, the waste heat power generation parameters in the dry quenching industry are changed from conventional high-temperature high-pressure to ultrahigh temperature, ultrahigh pressure and one-time intermediate reheating promotion into possibility, the ultrahigh temperature, ultrahigh pressure, high rotating speed and one-time intermediate reheating are realized, the net power generation efficiency is greatly improved, compared with the traditional high-temperature high-pressure unit, the 260t/h dry quenching is taken as an example, and the carbon emission is reduced annually (by taking CO/h dry quenching as an example 2 Count) about 36269 t.
However, at present, a multi-stage temperature reduction water system applied to ultrahigh-temperature, ultrahigh-pressure and single-intermediate-reheat dry quenching waste heat power generation is not available, all stages of temperature reduction water in the ultrahigh-temperature, ultrahigh-pressure and single-intermediate-reheat dry quenching waste heat power generation system cannot be supplied in a stepped manner to the maximum extent, a temperature reduction water pump needs to be additionally arranged, energy consumption is high, and particularly, a cavitation phenomenon of a deoxygenation water supply pump caused by high-temperature condensed water at extremely high temperature in summer is serious.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides an ultra-high temperature, ultra-high pressure, dry quenching waste heat power generation multistage desuperheating water system, which can supply desuperheating water at each stage in the ultra-high temperature, ultra-high pressure, once intermediate reheating dry quenching waste heat power generation system in a step manner to the utmost extent, avoids additionally arranging a desuperheating water pump, and achieves the purposes of energy saving and consumption reduction; when the temperature is extremely high in summer, the water supply temperature of the condensed water is ensured to be less than or equal to 60 ℃ after cooling by circulating cooling water, and the cavitation phenomenon of a deoxygenation water supply pump caused by the high-temperature condensed water is avoided.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a super-high temperature, ultrahigh pressure and dry quenching waste heat power generation multistage temperature reduction water system comprises a dry quenching boiler low-temperature superheater, a superheater room desuperheater, a high-temperature superheater, a turbo generator set high-pressure cylinder, a low-temperature reheater, a reheater room desuperheater, a high-temperature reheater, a turbo generator set low-pressure cylinder, a condenser, a desalting water tank, a deaerator and a boiler water feed pump which are sequentially connected through pipelines; the boiler water supply pump is connected with the boiler water supply assembly, the temperature reducer among the superheaters and the temperature and pressure reducer for the high-pressure bypass through pipelines, and the temperature and pressure reducer for the high-pressure bypass is provided with branch pipelines connected with the temperature reducer among the reheaters; the deaerator is connected with the temperature and pressure reducing device pipeline for the low-pressure bypass, and the temperature and pressure reducing device for the low-pressure bypass, the temperature and pressure reducing device for the condenser and the desalting water tank are sequentially connected through pipelines.
The system also comprises a condensate pump, and the condensate pump is arranged on a pipeline connecting the condenser and the demineralized water tank.
The system also comprises a water-water heat exchanger, and the water-water heat exchanger is arranged on a pipeline connecting the condensate pump and the demineralized water tank.
The device also comprises a deoxidizing water-feeding pump, and the deoxidizing water-feeding pump is arranged on a pipeline connecting the desalting water tank and the deaerator.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses supply desuperheater desuperheating water system between superheater when boiler feed pump supplies boiler feed water, utilize boiler feed pump interstage tap water to answer desuperheater desuperheating water system between reheater and high pressure by-pass desuperheating water reducer desuperheating water system, the by-pass desuperheating water reducer desuperheating water system of supplying low pressure by-pass when the deoxidising feed pump supplies deoxidising water for the deaerator, condensate pump supplies desuperheating water reducer desuperheating water system for the condenser when main road or bypass water heat exchanger pipeline (the recirculated cooling water that drops into when condensate overtemperature cools off) supply the demineralized water tank.
The utility model discloses each desuperheating water supplies water and is supplied by the water pump of the inside different pressure grades of system, and desuperheating water at different levels has avoided additionally setting up the desuperheating water pump among the furthest step supply system, reaches energy saving and consumption reduction, and condensation water pipeline bypass sets up water heat exchanger simultaneously, and when extreme high temperature in summer, through the cooling back of recirculated cooling water, guarantees that condensation water supply temperature is less than or equal to 60 ℃, has avoided the deoxidization that high temperature condensation water arouses to supply water pump cavitation phenomenon.
Drawings
FIG. 1 is a schematic diagram of the structure and a process flow diagram of the present invention.
In the figure: 1-low-temperature superheater of dry quenching boiler 2-desuperheater between superheaters 3-high-temperature superheater 4-high-pressure cylinder of turbo generator unit 5-low-temperature reheater 6-desuperheater between reheaters 7-high-temperature reheater 8-low-pressure cylinder of turbo generator unit 9-condenser 10-condensate pump 11-demineralized water tank 12-deoxygenated water feed pump 13-deoxygenated water deaerator 14-boiler water feed pump 15-desuperheater 16 for high-pressure bypass-desuperheater 17 for low-pressure bypass-desuperheater 18 for condenser-desuperheater between superheaters pipeline 19-desuperheater water pipeline 20 for reheaters-desuperheating reducer for high-pressure bypass 21-desuperheating water pipeline 21 for low-pressure bypass-desuperheater 22-desuperheater water pipeline for condenser 23-water heat exchanger.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
as shown in figure 1, a super high temperature, super high pressure, dry quenching coke waste heat power generation multistage temperature reduction water system, the system comprises a low-temperature superheater 1 of a dry quenching boiler, a desuperheater 2 among superheaters, a high-temperature superheater 3, a high-pressure cylinder 4 of a turbo generator unit, a low-temperature reheater 5, a desuperheater 6 among reheaters, a high-temperature reheater 7, a low-pressure cylinder 8 among the turbo generator unit, a condenser 9, a condensate pump 10, a demineralized water tank 11, a deoxidized water feed pump 12, a deoxidizer 13, a boiler water feed pump 14, a desuperheater 15 for a high-pressure bypass, a desuperheater 16 for a low-pressure bypass, a desuperheater 17 for a condenser, a desuperheater water pipeline 18 among superheaters, a desuperheater water pipeline 19 of a desuperheater for a reheater, a desuperheater pipeline 20 for a high-pressure bypass, a desuperheater pipeline 21 for a low-pressure bypass, a desuperheater pipeline 22 for a condenser and a water-water heat exchanger 23.
An outlet of a low-temperature superheater 1 of the dry quenching boiler is connected with an inlet of a desuperheater 2 between superheaters through a pipeline, an outlet of the desuperheater 2 between superheaters is connected with an inlet of a high-temperature superheater 3 through a pipeline, an outlet of the high-temperature superheater 3 is connected with an inlet of a high-pressure cylinder 4 of a turbo generator unit through a pipeline, an outlet of the high-pressure cylinder 4 of the turbo generator unit is connected with an inlet of a low-temperature reheater 5 through a pipeline, an outlet of the low-temperature reheater 5 is connected with an inlet of a desuperheater 6 between reheaters through a pipeline, an outlet of the desuperheater 6 between reheaters is connected with an inlet of a high-temperature reheater 7 through a pipeline, an outlet of the high-temperature reheater 7 is connected with an inlet of a low-pressure cylinder 8 of the turbo generator unit through a pipeline, an outlet of the low-pressure cylinder 8 of the turbo generator unit is connected with an inlet of a condenser 9 through a pipeline, an outlet of the condenser 9 of the pipeline is connected with a condensate pump 10, and an inlet of a condensate pump 11 is connected with an inlet of a brine tank 11 through a pipeline, the connected pipelines are provided with a water-water heat exchanger 23. The outlet of the desalting water tank 11 is connected with a deoxidizing water-feeding pump 12, a deaerator 13 and a boiler water-feeding pump 14 in sequence through pipelines.
The pipeline that 3 exports of high temperature over heater and 4 entrances of high pressure cylinder of turbo generator set link to each other is equipped with the branch pipeline and links to each other with temperature and pressure reduction ware 15 for the high pressure bypass, and the pipeline that 15 exports of temperature and pressure reduction ware pass through pipeline and 4 exports of high pressure cylinder of turbo generator set and 5 entrances of low temperature reheater link to each other. The pipeline that the export of high temperature re-heater 7 and 8 entrys of low pressure cylinder in the turbo generator set link to each other is equipped with branch pipeline and links to each other with 16 entrys of temperature and pressure reduction ware for the low pressure bypass, and 16 exports of temperature and pressure reduction ware for the low pressure bypass link to each other with 17 entrys of temperature and pressure reduction ware for the condenser through the pipeline, and 17 pass through the pipeline and link to each other with pipeline condenser 9 for the condenser.
The boiler feed water pump 14 is connected to the superheater room attemperator 2 through a superheater room attemperator water pipe 18, the boiler feed water pump 14 is connected to the high-pressure bypass room attemperator 15 through a high-pressure bypass room attemperator water pipe 20, and the high-pressure bypass room attemperator water pipe 20 is connected to the reheater room attemperator 6 through a reheater room attemperator water pipe 19.
The pipeline connecting the deaerating water feed pump 12 and the deaerator 13 is connected to the low-pressure bypass desuperheater 16 through a low-pressure bypass desuperheater and decompressor pipeline 21. The temperature and pressure reducer 17 for the condenser is connected with the condensate pump 10 and the desalted water tank 11 through a temperature and pressure reducer temperature reducing water pipeline 22 for the condenser.
The utility model discloses a theory of operation and working process as follows:
after the temperature of the low-temperature superheated steam self-drying quenching boiler low-temperature superheater 1 is adjusted by the inter-heater desuperheater 2, main steam of the high-temperature superheater 3 respectively enters a high-pressure cylinder 4 of the steam turbine generator unit and a desuperheater 15 for a high-pressure bypass, low-temperature reheated steam discharged by the high-pressure cylinder 4 of the steam turbine generator unit sequentially enters a low-temperature reheater 5, after the temperature of the low-temperature reheated steam is adjusted by the inter-reheater desuperheater 6, high-temperature reheated steam entering a high-temperature reheater 7 respectively enters a low-pressure cylinder 8 of the steam turbine generator unit and a desuperheater 16 for a low-pressure bypass, exhaust steam discharged by the low-pressure cylinder 8 of the steam turbine generator unit is condensed into water by a condenser 9, and then sequentially passes through a condensed water pump 10, a desalted water tank 11, a water-water heat exchanger 23, a deoxygenated water-feeding pump 12, a deoxygenated water-removing device 13 and a boiler water-feeding pump 14 to supply boiler water.
The utility model discloses each desuperheating water supplies water and is supplied by the water pump of the inside different pressure grades of system, and desuperheating water at different levels has avoided additionally setting up the desuperheating water pump among the furthest step supply system, reaches energy saving and consumption reduction, and condensation water pipeline bypass sets up water heat exchanger simultaneously, and when extreme high temperature in summer, through the cooling back of recirculated cooling water, guarantees that condensation water supply temperature is less than or equal to 60 ℃, has avoided the deoxidization that high temperature condensation water arouses to supply water pump cavitation phenomenon.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (4)
1. Super high temperature, superhigh pressure, multistage temperature reduction water system of dry coke quenching cogeneration, its characterized in that: the system comprises a low-temperature superheater, a desuperheater between superheaters, a high-temperature superheater, a high-pressure cylinder, a low-temperature reheater, a desuperheater between reheaters, a high-temperature reheater, a low-pressure cylinder, a condenser, a demineralized water tank, a deaerator and a boiler feed pump which are sequentially connected through pipelines; the boiler water supply pump is connected with the boiler water supply assembly, the desuperheater between the superheaters and the desuperheater for the high-pressure bypass through pipelines, and the desuperheater for the high-pressure bypass is provided with branch pipelines connected with the desuperheater between the reheaters; the deaerator is connected with the temperature and pressure reducing device pipeline for the low-pressure bypass, and the temperature and pressure reducing device for the low-pressure bypass, the temperature and pressure reducing device for the condenser and the desalting water tank are sequentially connected through pipelines.
2. The ultrahigh-temperature, ultrahigh-pressure and dry quenching waste heat power generation multistage desuperheating water system according to claim 1, characterized in that: the system also comprises a condensate pump, and the condensate pump is arranged on a pipeline connecting the condenser and the demineralized water tank.
3. The ultrahigh-temperature, ultrahigh-pressure and dry quenching waste heat power generation multistage desuperheating water system according to claim 2, characterized in that: the system also comprises a water-water heat exchanger, wherein the water-water heat exchanger is arranged on a pipeline connecting the condensate pump and the demineralized water tank.
4. The ultrahigh-temperature, ultrahigh-pressure and dry quenching waste heat power generation multistage desuperheating water system according to claim 1, characterized in that: the device also comprises a deoxidizing water-feeding pump, and the deoxidizing water-feeding pump is arranged on a pipeline connecting the desalting water tank and the deaerator.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220997835.9U CN217441593U (en) | 2022-04-28 | 2022-04-28 | Ultrahigh-temperature, ultrahigh-pressure and dry quenching waste heat power generation multistage temperature reduction water system |
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| CN202220997835.9U CN217441593U (en) | 2022-04-28 | 2022-04-28 | Ultrahigh-temperature, ultrahigh-pressure and dry quenching waste heat power generation multistage temperature reduction water system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114719237A (en) * | 2022-04-28 | 2022-07-08 | 中冶焦耐(大连)工程技术有限公司 | Ultrahigh-temperature, ultrahigh-pressure and dry quenching waste heat power generation multistage desuperheating water process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114719237A (en) * | 2022-04-28 | 2022-07-08 | 中冶焦耐(大连)工程技术有限公司 | Ultrahigh-temperature, ultrahigh-pressure and dry quenching waste heat power generation multistage desuperheating water process |
| CN114719237B (en) * | 2022-04-28 | 2024-04-23 | 中冶焦耐(大连)工程技术有限公司 | Multi-stage temperature reduction technology for power generation by using ultrahigh temperature, ultrahigh pressure and dry quenching waste heat |
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