CN203561221U - Multi-functional waste heat utilization system - Google Patents
Multi-functional waste heat utilization system Download PDFInfo
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- CN203561221U CN203561221U CN201320773885.XU CN201320773885U CN203561221U CN 203561221 U CN203561221 U CN 203561221U CN 201320773885 U CN201320773885 U CN 201320773885U CN 203561221 U CN203561221 U CN 203561221U
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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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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses a multi-functional waste heat utilization system, which comprises a steam turbine, a coke oven flue gas waste heat boiler and a living hot water supply system, wherein the coke oven flue gas waste heat boiler is connected with a steam turbine pipeline, electric three-way valves are arranged on front and rear cooling pipelines of the steam turbine and a plate type heat exchanger of the living hot water supply system, and a second heat exchanger which heats demineral water is connected between the electric three-way valves and a water inlet of a deaerator. The multi-functional waste heat utilization system has the beneficial effects that the multi-functional waste heat utilization system achieves combined heating and power by utilizing a circulating water waste heat recovery and furnace flue gas waste heat recovery module, a waste heat generation system and the living hot water supply system, and effectively improves comprehensive utilization efficiency of energy in a coking plant. Because the living hot water supply system needs to exhaust air through a steam turbine, the multi-functional waste heat utilization system reduces dry quenching power, balances supply of electricity and heat, prevents the defect that overall revenue reduces because dry quenching is combined into power grid, improves comprehensive utilization level of the energy, and reduces investment payoff period.
Description
Technical field
The utility model relates to the complementary energy recycling system of iron and steel, coking industry; Particularly relate to a kind of Multifunctional exhaust heat and utilize system.
Background technology
The patent No. is that 02829821.7 patent discloses the bootstrap system that a kind of dry coke quenching replaces the quenching mode of coke wet quenching.The sensible heat that the result of implementation of this patent obviously improved environment, improved coke quality, recycle red Jiao generates electricity.At present, integrated iron and steel works have substantially all built dry coke quenching auxiliary, integrated iron and steel works can all consume dry coke quenching auxiliary institute generated energy, and can enjoy the extension income of dry coke quenching, and independent coal chemical enterprise is usually because cannot all consume dry coke quenching auxiliary institute generated energy and must be connected to the grid, because the electricity price being connected to the grid is lower, have a strong impact on the investment payback time of enterprise.
At present, dry coke quenching auxiliary mainly provides electricity and two kinds of energy modes of steam, and in the occasion of not using steam demand, the energy form that dry coke quenching auxiliary provides seems single.The patent No. is that the patent of 202561871U discloses a kind of heating system that utilizes cooling circulating water waste heat, and dry quenching system is still continued to use cooling tower device at present, cause water consumption, power consumption larger, the deficiencies in the prior art part is that this device only limits to investment, heating demand etc.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of Multifunctional exhaust heat to utilize system.
The technical scheme that the utility model adopts is that a kind of Multifunctional exhaust heat utilizes system, comprises steam turbine, waste heat of coke-oven flue gas boiler and domestic hot-water supply system; Described waste heat of coke-oven flue gas boiler is connected with steam turbine pipeline, on the forward and backward pipeline of the cooling of the plate type heat exchanger of described steam turbine and domestic hot-water supply system, be provided with electric T-shaped valve, between the water inlet pipeline of described electric T-shaped valve and oxygen-eliminating device, be connected with the second heat exchanger that demineralized water is heated.
Also comprise dry coke quenching residual heat boiler, described dry coke quenching residual heat boiler is connected with steam turbine pipeline.
Condensate line, steam turbine and waste heat of coke-oven flue gas boiler that the water inlet of oxygen-eliminating device condenses into water with domestic hot-water supply system, turbine condenser are respectively connected.
Exit flue at described waste heat of coke-oven flue gas boiler is also provided with flue gas waste heat recovery module, described flue gas waste heat recovery module comprises, frequency converting induced draft fan and the vapor-water heat exchanger that demineralized water is heated, described frequency converting induced draft fan control enters the exhaust gas volumn in vapor-water heat exchanger.
In sweet-water tank import department, install and be provided with three-temperature sensor, described three-temperature sensor is dynamically controlled the exhaust gas volumn entering in vapor-water heat exchanger.
The First Heat Exchanger that the cold water side of condenser is connected with respectively cooling tower and the condensing cooling water waste heat of condenser discharge is absorbed.
Condenser, in the closed pipeline that cooling tower and First Heat Exchanger form, be respectively arranged with the 4th valve, the 5th valve, the 6th valve and the 7th valve, when closing the 5th valve and the 6th valve, open the 4th valve and the 7th valve, the recirculated water in cooling tower is bypassed to and in First Heat Exchanger, carries out heat exchange, backwater after cooling returns to the exhaust that continues cooling steam turbine in condenser, the cooling circulating water waste heat of dry coke quenching electricity generation system carries out heat exchange by the demineralized water between First Heat Exchanger and change waterwheel, improve the inflow temperature that enters sweet-water tank, and then the steam production of raising dry coke quenching residual heat boiler.
In domestic hot-water supply system, be provided with safety valve, can, under emergency appears in system, open pressure release.
The beneficial effects of the utility model are, this system synthesis has been utilized circulating water afterheat recovery, waste heat of coke-oven flue gas recycling module, dry coke quenching afterheat generating system, domestic hot-water supply system, realize cogeneration, effectively improved comprehensive utilization rate of energy source in coke-oven plant; Because hot water supply system needs bleeder steam, therefore, reduced dry coke quenching generated energy, balance electricity and hot supply ratio, after effectively having avoided dry coke quenching to be connected to the grid, electrical network electricity price is low and drawback that the integral benefit that causes declines, has improved the level of comprehensive utilization of the energy, has reduced the investment payback time.
Accompanying drawing explanation
Fig. 1 is the planar structure schematic diagram that the utility model Multifunctional exhaust heat utilizes system.
In figure:
1, dry coke quenching residual heat boiler 2, steam turbine 3, the first valve 4, the second valve
5, oxygen-eliminating device 6, variable frequency pump 7, frequency converting induced draft fan 8, waste heat of coke-oven flue gas boiler
9, sweet-water tank 10, the 3rd valve 11, cooling tower 12, condenser
13, plate type heat exchanger 14, the first temperature sensor 15, electric T-shaped valve
16, electric T-shaped valve 17, the second temperature sensor 18, the first check valve
19, the second check valve 20, feed pump 21, stop valve 22, the 3rd check valve
23, filter 24, expansion tank 25, safety valve 26, the 4th valve
27, the 5th valve 28, water pump 29, the 6th valve 30, the 7th valve
31, First Heat Exchanger 32, the second heat exchanger 33, vapor-water heat exchanger 34, frequency converting induced draft fan
35, three-temperature sensor 36, electric T-shaped valve.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
As shown in Figure 1, a kind of Multifunctional exhaust heat of the utility model utilizes system, comprises dry coke quenching waste heat
Boiler, steam turbine, waste heat of coke-oven flue gas boiler and domestic hot-water supply system, described dry coke quenching residual heat boiler is connected with steam turbine, described steam turbine is also connected with waste heat of coke-oven flue gas boiler and domestic hot-water supply system respectively, it is characterized in that, on the forward and backward pipeline of the cooling of the plate type heat exchanger of described steam turbine and domestic hot-water supply system, be provided with electric T-shaped valve, between described electric T-shaped valve and the water inlet of oxygen-eliminating device, be connected with the heat exchanger that demineralized water is heated.
Oxygen-eliminating device input is connected with condensate line, steam turbine and waste heat of coke-oven flue gas boiler that domestic hot-water supply system condenses into water by turbine condenser respectively, the heat exchanger that the cold water side of described condenser is connected with respectively cooling tower and the waste heat of condensing cooling water that condenser is discharged absorbs.
Exit flue at described waste heat of coke-oven flue gas boiler is also provided with flue gas waste heat recovery module, and described flue gas waste heat recovery module, comprises, described air-introduced machine is connected with sweet-water tank and vapor-water heat exchanger respectively.
Operation principle of the present utility model is, from the steam of dry coke quenching residual heat boiler 1, enter steam turbine 2 acting of expanding, the generating of drive generator, exhaust steam after acting enters after condenser 12 is condensed into liquid state and sends into oxygen-eliminating device 5 by water pump, oxygen-eliminating device 5 interior by from steam turbine 2 bleed or saturated vapor heating from the 0.8-1MPa of waste heat of coke-oven flue gas boiler 8 after by variable frequency pump 6, send into dry coke quenching residual heat boiler 1 and regenerate high steam.This two parts steam can switch by the switch of the first valve 3 and the second valve 4 according to field condition.Under normal circumstances, the required steam of oxygen-eliminating device 5 is mainly from waste heat of coke-oven flue gas boiler 8; As there is emergency, and can close the second valve 4, open the first valve 3 and be switched to the state of bleeding of steam turbine 2.Partial fume from coke oven exit flue is sent into after waste heat of coke-oven flue gas boiler 8 by frequency converting induced draft fan 7, heating is from the demineralized water of sweet-water tank 9 and produce 0.8-1MPa saturated vapor, flue-gas temperature after heat exchange is 180 ℃ of left and right, this partial fume is introduced in vapor-water heat exchanger 33, to the feed-water preheating from the second heat exchanger 32, the feed temperature after preheating is 104 ℃.By the unlatching of the 3rd valve 10 and closing of the second valve 4, the steam of waste heat of coke oven boiler for producing can be sent into factory's low-pressure pipe network, now, deoxygenation steam can be opened the first valve 3 and bled by steam turbine 2.
The cooling circulating water waste heat of dry coke quenching electricity generation system carries out heat exchange by the demineralized water between First Heat Exchanger 31 and change waterwheel, improves the inflow temperature that enters sweet-water tank, and then improves the steam production of dry coke quenching residual heat boiler 8.This technology is mainly by completing the keying of the 4th valve 26, the 5th valve 27, the 6th valve 29, the 7th valve 30.When closing the 5th valve 27 and the 6th valve 29, to open recirculated water in the 4th valve 26 and 30 cooling towers 11 of the 7th valve and be bypassed in First Heat Exchanger 31 and carry out heat exchange, the backwater after cooling returns to the exhaust of the cooling steam turbine 2 of the interior continuation of condenser 12.Otherwise, by cooling tower 11 heat exchange.Steam after the interior heat exchange of plate type heat exchanger 13, condense into high temperature saturation water, through be introduced into the second heat exchanger 32 demineralized water after temperature increase heated again, afterwards, send into vapor-water heat exchanger 33, demineralized water finally reaches the feed temperature of 104 ℃ after Multi-stage heating.
The feed temperature of considering waste heat of coke-oven flue gas boiler 8 is constant, therefore, at sweet-water tank, 9 import departments are provided with three-temperature sensor 35, and link with frequency conversion fan 34, dynamically control the exhaust gas volumn entering in vapor-water heat exchanger 33, unnecessary flue gas is bypassed in coke oven exit flue.
Further, from drawing gas of steam turbine 2, by plate type heat exchanger 13, heat the Living Water of opposite side, after cooling, enter the second heat exchanger 32; The cold water of expansion tank 24 is removed after impurity by filter 23, via after the 3rd check valve 22 with the cold water side that enters plate type heat exchanger 13 together with low-temperature water heating by the second check valve 19, after the hot water heating of opposite side, after the electric T-shaped valve 6 of domestic water loop, supplied with bathing or domestic hot-water uses.The second temperature sensor 17 is responsible for monitoring domestic hot-water's temperature, and temperature reaches after limit value, and electric T-shaped valve 16 carries out path switching, and hot water will not heat by plate type heat exchanger 13, only by feed pump 20, carry out short-circuit cycle.The domestic hot-water at user place can be by carrying out temperature adjustment from the cold water of stop valve 21 and the first check valve 18.The first temperature sensor 14 is responsible for the hot water temperature after the 13 cold water side heat exchange of monitoring plate type heat exchanger, and by the first magnetic valve 15, carried out the steam flow of dynamic adjustments heated side, when domestic hot-water's demand does not cause bleeding affluence very much, can be bypassed in the second heat exchanger 32 and carry out heat exchange by threeway 11 valves.
Further, in order to guarantee the safety of domestic hot-water's circulation line, be provided with safety valve 25 and can guarantee that system occurs under emergency, open pressure release.
The power-equipment power consumptions such as this system water pump, frequency converting induced draft fan all can be provided by dry coke quenching electricity generation system, have reduced the electricity cost of electrical network.Meanwhile, also reduce the coke-dry-quenching-type electric weight being connected to the grid that generates electricity, shortened the dry quenching system investment payback time.
The set of this system complete circulating water afterheat recovery, waste heat of coke-oven flue gas recycling module, dry coke quenching afterheat generating system, domestic hot-water supply system, realized cogeneration.Because hot water supply system needs bleeder steam, therefore, reduced dry coke quenching generated energy, balance electricity and hot supply ratio, effectively avoided the drawback of the low integral benefit decline causing of dry coke quenching rate for incorporation into the power network.The level of comprehensive utilization that has improved the energy, has reduced the investment payback time.
Claims (8)
1. Multifunctional exhaust heat utilizes a system, comprises steam turbine (2), waste heat of coke-oven flue gas boiler (8) and domestic hot-water supply system; Described waste heat of coke-oven flue gas boiler (8) is connected with steam turbine (2) pipeline, it is characterized in that, on the forward and backward pipeline of the cooling of the plate type heat exchanger (13) of described steam turbine (2) and domestic hot-water supply system, be provided with electric T-shaped valve (15), between described electric T-shaped valve (15) and the water inlet pipeline of oxygen-eliminating device (5), be connected with the second heat exchanger (32) that demineralized water is heated.
2. Multifunctional exhaust heat according to claim 1 utilizes system, it is characterized in that, also comprises dry coke quenching residual heat boiler (1), and described dry coke quenching residual heat boiler (1) is connected with steam turbine (2) pipeline.
3. Multifunctional exhaust heat according to claim 1 and 2 utilizes system, it is characterized in that, condensate line, steam turbine (2) and waste heat of coke-oven flue gas boiler (8) that the water inlet of oxygen-eliminating device (5) condenses into water with domestic hot-water supply system, turbine condenser (12) are respectively connected.
4. Multifunctional exhaust heat according to claim 1 utilizes system, it is characterized in that, exit flue at described waste heat of coke-oven flue gas boiler (8) is also provided with flue gas waste heat recovery module, described flue gas waste heat recovery module comprises, frequency converting induced draft fan (34) and the vapor-water heat exchanger (33) that demineralized water is heated, described frequency converting induced draft fan (34) is controlled the exhaust gas volumn entering in vapor-water heat exchanger (33).
5. Multifunctional exhaust heat according to claim 4 utilizes system, it is characterized in that, in sweet-water tank (9) import department, install and be provided with three-temperature sensor (35), described three-temperature sensor (35) is dynamically controlled the exhaust gas volumn entering in vapor-water heat exchanger (33).
6. Multifunctional exhaust heat according to claim 1 utilizes system, it is characterized in that the First Heat Exchanger (31) that the cold water side of described condenser (12) is connected with respectively cooling tower (11) and the condensing cooling water waste heat of condenser (12) discharge is absorbed.
7. Multifunctional exhaust heat according to claim 6 utilizes system, it is characterized in that, described condenser (12), in the closed pipeline that cooling tower (11) and First Heat Exchanger (31) form, be respectively arranged with the 4th valve (26), the 5th valve (27), the 6th valve (29) and the 7th valve (30), when closing the 5th valve (27) and the 6th valve (29), open the 4th valve (26) and the 7th valve (30), the recirculated water in cooling tower (11) is bypassed in First Heat Exchanger (31) and carries out heat exchange, backwater after cooling returns to the exhaust that continues cooling steam turbine (2) in condenser (12), the cooling circulating water waste heat of dry coke quenching electricity generation system carries out heat exchange by the demineralized water between First Heat Exchanger (31) and change waterwheel, improve the inflow temperature that enters sweet-water tank, and then the steam production of raising dry coke quenching residual heat boiler (8).
8. Multifunctional exhaust heat according to claim 1 utilizes system, it is characterized in that, is provided with safety valve (25) in domestic hot-water supply system, can, under emergency appears in system, open pressure release.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320773885.XU CN203561221U (en) | 2013-11-28 | 2013-11-28 | Multi-functional waste heat utilization system |
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| CN201320773885.XU CN203561221U (en) | 2013-11-28 | 2013-11-28 | Multi-functional waste heat utilization system |
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| CN203561221U true CN203561221U (en) | 2014-04-23 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105984910A (en) * | 2015-02-03 | 2016-10-05 | 上海华林工业气体有限公司 | Oxygen removal device for deaerator used for hydrogen production |
| CN104154766B (en) * | 2014-08-28 | 2017-01-11 | 安徽省六安市佳瑞粉末冶金有限公司 | Natural gas tunnel kiln exhaust smoke waste heat recycling pipeline thermoelectricity and hot water supply system |
| CN106989611A (en) * | 2017-05-18 | 2017-07-28 | 中冶华天南京工程技术有限公司 | A kind of coke-stove gas and dry coke quenching residual heat integrative electricity generation system |
| CN107014218A (en) * | 2017-05-18 | 2017-08-04 | 中冶华天南京工程技术有限公司 | Heat power generating system based on coke-oven plant's residual heat and energy integrated utilization |
| CN113236377A (en) * | 2021-06-28 | 2021-08-10 | 丰城市天壕新能源有限公司 | Steam turbine for dry quenching waste heat power generation |
-
2013
- 2013-11-28 CN CN201320773885.XU patent/CN203561221U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154766B (en) * | 2014-08-28 | 2017-01-11 | 安徽省六安市佳瑞粉末冶金有限公司 | Natural gas tunnel kiln exhaust smoke waste heat recycling pipeline thermoelectricity and hot water supply system |
| CN105984910A (en) * | 2015-02-03 | 2016-10-05 | 上海华林工业气体有限公司 | Oxygen removal device for deaerator used for hydrogen production |
| CN106989611A (en) * | 2017-05-18 | 2017-07-28 | 中冶华天南京工程技术有限公司 | A kind of coke-stove gas and dry coke quenching residual heat integrative electricity generation system |
| CN107014218A (en) * | 2017-05-18 | 2017-08-04 | 中冶华天南京工程技术有限公司 | Heat power generating system based on coke-oven plant's residual heat and energy integrated utilization |
| CN107014218B (en) * | 2017-05-18 | 2023-10-31 | 中冶华天南京工程技术有限公司 | Thermal power generation system based on waste heat and complementary energy integrated utilization of coking plant |
| CN106989611B (en) * | 2017-05-18 | 2023-11-24 | 中冶华天南京工程技术有限公司 | Coke oven gas and dry quenching waste heat comprehensive power generation system |
| CN113236377A (en) * | 2021-06-28 | 2021-08-10 | 丰城市天壕新能源有限公司 | Steam turbine for dry quenching waste heat power generation |
| CN113236377B (en) * | 2021-06-28 | 2022-12-23 | 丰城市天壕新能源有限公司 | Steam turbine for dry quenching waste heat power generation |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20161128 |