CN107144146B - Tank calciner waste heat utilization system based on mother pipe - Google Patents
Tank calciner waste heat utilization system based on mother pipe Download PDFInfo
- Publication number
- CN107144146B CN107144146B CN201710514738.3A CN201710514738A CN107144146B CN 107144146 B CN107144146 B CN 107144146B CN 201710514738 A CN201710514738 A CN 201710514738A CN 107144146 B CN107144146 B CN 107144146B
- Authority
- CN
- China
- Prior art keywords
- water
- steam
- waste heat
- calciner
- main pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002918 waste heat Substances 0.000 title claims abstract description 97
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 183
- 239000000498 cooling water Substances 0.000 claims abstract description 58
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000003546 flue gas Substances 0.000 claims abstract description 55
- 238000006477 desulfuration reaction Methods 0.000 claims description 15
- 230000023556 desulfurization Effects 0.000 claims description 15
- 238000000605 extraction Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 3
- 238000004064 recycling Methods 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 13
- 229910052799 carbon Inorganic materials 0.000 description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000001354 calcination Methods 0.000 description 3
- 239000011329 calcined coke Substances 0.000 description 3
- 239000003575 carbonaceous material Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002006 petroleum coke Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
- F27D2017/006—Systems for reclaiming waste heat using a boiler
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chimneys And Flues (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention provides a waste heat utilization system of a tank calciner based on a mother pipe, which comprises a plurality of tank calciners, a water jacket water inlet main pipe, a water jacket water outlet main pipe, a plurality of waste heat boilers, a steam main pipe, a steam turbine and a condenser, wherein a flue gas outlet of each tank calciner is communicated with a flue gas inlet of each waste heat boiler; the steam outlets of the plurality of waste heat boilers are communicated with the steam inlet of the steam turbine through a steam main pipe; the steam outlet of the steam turbine is communicated with the steam inlet of the condenser; the cooling water inlet of the condenser is communicated with a water return pipeline of the heat supply external network; the cooling water outlet of the condenser is communicated with the cooling water inlet of the calciner water jackets of the pot calciners through water jacket water inlet mother pipes; the hot water outlet of the calciner water jackets of the multiple pot calciners is communicated with the water supply pipeline of the heat supply external network through the water jacket water outlet main pipe, and hot water is provided outwards. The system carries out high-efficiency integrated recycling on the flue gas waste heat and the water jacket cooling water waste heat of a plurality of calciners.
Description
Technical Field
The invention relates to the technical field of waste heat utilization in the carbon industry, in particular to a waste heat utilization system of a tank calciner based on a mother pipe.
Background
The carbon material is one of the main raw materials of the electrolytic aluminum production process, and the production of carbon material products is a key link for restricting the development of the aluminum industry. In recent years, the aluminum industry in China has developed into a rapid channel, the carbon for aluminum has developed, and the productivity of carbon material products has increased from the megaton level to the current megaton level by several years, and has also developed at a certain speed increase.
The pot calciner is one of the main equipment in the carbon production process, can calcine petroleum coke with different volatile contents, has the advantages of stable quality of calcined materials, low carbon burning loss rate, high stacking density of the calcined coke, simple operation, small maintenance workload, long continuous production period and the like, and is widely applied to carbon factories and aluminum factories.
When the calciner is used for calcining raw materials, a large amount of surplus heat is discharged along with flue gas besides the heat generated by burning petroleum coke volatile components, and the flue gas temperature is even up to 900 ℃. According to the heat balance calculation, the calcination heat absorption of the raw materials only accounts for 33.5% of the heat expenditure of the calciner, and the heat taken away by the calcination flue gas accounts for 47.9% of the heat expenditure of the whole calciner. However, since the flue gas of the calciner has an obvious characteristic, namely, the flue gas temperature is high, but the flue gas amount is small, the waste heat recovery of the flue gas of the calciner is not very positive, even a plurality of carbon factories adopt a blast cooling mode, namely, low-temperature air is mixed into the flue gas of the high temperature through a high-power blower to forcedly cool and then is discharged into the atmosphere, so that valuable flue gas waste heat resources are wasted, and the newly increased power consumption of the high-power blower also brings about the improvement of the carbon production cost.
In addition, the discharge end of the pot-type calciner is provided with a cooling water jacket for cooling the high-temperature calcined coke (reaching more than 1000 ℃), cooling water in the cooling water jacket indirectly exchanges heat with the calcined coke of the calciner, and cooling water after heat absorption is sent to a cooling tower for heat dissipation and then returns to the water jacket again to serve as cooling water jacket water for water inlet, so that circulation is realized. The cooling water outlet of the water jacket contains a large amount of heat, and the quantity is very considerable, but the biggest disadvantage is that the temperature is too low, only about 50 ℃, the waste heat at low temperature is low, the grade is extremely low, so that the utilization of the cooling water outlet of the water jacket is very difficult, and a carbon plant generally cannot consider recycling part of heat sources.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, and aims to provide a tank calciner waste heat utilization system capable of comprehensively recycling waste heat resources such as calciner flue gas and water jacket cooling water of a carbon plant and efficiently recycling high-temperature and low-flow flue gas waste heat and low-temperature and high-flow water jacket cooling water waste heat based on a mother pipe.
In order to achieve the above purpose, the invention provides a tank calciner waste heat utilization system based on a mother pipe, which comprises a plurality of tank calciners, a water jacket water inlet mother pipe, a water jacket water outlet mother pipe, a plurality of waste heat boilers, a steam mother pipe, a steam turbine and a condenser, wherein a flue gas outlet of each tank calciner is communicated with a flue gas inlet of each waste heat boiler, and high-temperature flue gas from the tank calciner is subjected to heat exchange and temperature reduction in the waste heat boilers; the steam outlets of the waste heat boilers are communicated with the steam inlet of the steam turbine through a steam main pipe, the steam of the steam outlets of the waste heat boilers is collected in the steam main pipe, and the steam in the steam main pipe enters the steam turbine to drive the steam turbine to rotate for doing work; the steam outlet of the steam turbine is communicated with the steam inlet of the condenser; the cooling water inlet of the condenser is communicated with the water return pipeline of the heat supply external network, and the condenser is cooled by the water return of the heat supply external network; the cooling water outlet of the condenser is communicated with the cooling water inlet of the calciner water jacket of each pot-type calciner through a water jacket water inlet main pipe, the cooling water of the cooling water outlet of the condenser is collected in the water jacket water inlet main pipe and then is divided into a plurality of branches to respectively enter the cooling water inlet of the calciner water jacket of each pot-type calciner so as to cool the calciner water jacket of each pot-type calciner; the hot water outlet of the calciner water jackets of the multiple pot calciners is communicated with the water supply pipeline of the heat supply external network through the water jacket water outlet main pipe, and the hot water of the hot water outlets of the calciner water jackets is collected in the water jacket water outlet main pipe and then sent to the water supply pipeline of the heat supply external network to supply hot water.
The waste heat utilization system further comprises a flue gas main pipe, an induced draft fan, a desulfurization device and a chimney, flue gas outlets of the plurality of waste heat boilers are sequentially communicated with the induced draft fan, the desulfurization device and the chimney along the flue gas flow direction through the flue gas main pipe, and flue gas of the plurality of waste heat boilers is discharged to the atmosphere through the chimney after entering the induced draft fan through the flue gas main pipe to boost pressure and then is subjected to desulfurization treatment through the desulfurization device.
The waste heat utilization system further comprises a condensate pump, an deoxidization water supply system and a water supply main pipe, wherein the condensate outlet of the condenser is sequentially communicated with the condensate pump and the deoxidization water supply system through the water supply main pipe and the water supply inlets of the plurality of waste heat boilers along the condensate flow direction, and the condensate at the condensate outlet of the condenser enters the deoxidization water supply system for treatment after being pressurized by the condensate pump and then is divided into a plurality of branches through the water supply main pipe to enter each waste heat boiler respectively.
And the waste heat utilization system is characterized in that the steam turbine is provided with a steam extraction port, and steam exhausted from the steam extraction port provides a heating steam source for the deoxidization water supply system.
The waste heat utilization system comprises a deaerator and a water supply pump, wherein a steam extraction port of the steam turbine is communicated with a heating steam inlet of the deaerator to provide a heating steam source for the deaerator, a water outlet of the deaerator is communicated with a water inlet of the water supply pump, and a water outlet of the water supply pump is communicated with water supply inlets of a plurality of waste heat boilers through a water supply main pipe.
The waste heat utilization system further comprises a generator, wherein the generator is coaxially connected with the steam turbine, and the steam turbine drags the generator to generate electricity.
The waste heat utilization system is characterized in that a cooling water inlet of the calciner water jacket is positioned at a low-temperature end of the calciner water jacket, and a hot water outlet of the calciner water jacket is positioned at a high-temperature end of the calciner water jacket.
The invention has the beneficial effects that:
1) Because the flue gas temperature of the pot calciner is high and the grade is high, the waste heat boiler is combined with the steam turbine generator unit to convert the high-grade flue gas heat energy into high-quality electric energy; meanwhile, the circulating cooling water of the turbine condenser and the waste heat of the water jacket cooling water of the calciner are recycled, and the low temperature and low grade of the cooling water are considered, so that the waste heat of the cooling water is hardly utilized, and compared with the traditional mode that the circulating cooling water is discharged to the atmosphere through a cooling tower, the method has obvious economic benefit;
2) The circulating cooling water of the steam turbine and the condenser and the water jacket cooling water heat exchange system of the calciner are connected in series, the cooling water firstly exchanges heat with the condenser cooling system and then enters the water jacket cooling system for secondary heat exchange, the optimal design fully considers the heat source characteristics of the two heat exchange systems, compared with the parallel connection mode, the total amount of cooling water required by the system is greatly reduced, and compared with the serial connection mode that the cooling water firstly enters the water jacket cooling system and then enters the condenser cooling system, obviously, the invention can obviously improve the cooling effect of the condenser, improve the vacuum of the condenser, and greatly improve the generating capacity of the steam turbine generator unit;
3) The invention constructs a tank calciner waste heat utilization system based on mother pipe, which is used for overall planning of a plurality of waste heat resources of calciners of a carbon plant, firstly, according to the characteristics of high temperature and small flow of flue gas of the calciners, waste heat of the flue gas is recovered by adopting a waste heat boiler and converted into steam resources, and meanwhile, considering the characteristics that a plurality of calciners are generally configured in the carbon plant and the flue gas quantity and the corresponding steam yield of a single calciner are smaller, the waste heat boiler is designed into the mother pipe, the flue gas and the steam are utilized by a steam turbine after being collected, and the flue gas is intensively purified and discharged after being collected; then, the circulating water waste heat of the turbine condenser and the water jacket waste heat of the calciner are integrally recovered, the backwater of the external heat supply network is used for cooling the condenser, circulating cooling water at the outlet of the condenser is continuously used for cooling the water jackets of the calciner, the outlet cooling water of the water jackets of the calciner is also designed into a master pipe, and hot water is intensively supplied to the external heat supply network after being collected, so that the high-integration utilization of the waste heat of the pot-type calciner is completed, and the cascade utilization of heat energy and scientific energy are realized;
4) The comprehensive thermal efficiency of the whole set of waste heat utilization system can reach more than 80%, and compared with a pure waste heat power generation mode (the overall thermal efficiency can only reach about 25%), the comprehensive energy utilization efficiency is obviously improved.
Drawings
Other objects and results of the present invention will become more apparent and readily appreciated by reference to the following detailed description taken in conjunction with the accompanying drawings. In the drawings:
FIG. 1 is a schematic diagram of a mother pipe based tank calciner waste heat utilization system of the present invention.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details.
Various embodiments according to the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a tank calciner waste heat utilization system based on a mother pipe, as shown in fig. 1, the tank calciner waste heat utilization system based on the mother pipe comprises a plurality of tank calciners (1.1-1. N), a water jacket water inlet mother pipe 9, a water jacket water outlet mother pipe 10, a plurality of waste heat boilers (2.1-2. N), a steam mother pipe 7, a steam turbine 11 and a condenser 12, wherein,
the flue gas outlet of each pot calciner is communicated with the flue gas inlet of each waste heat boiler, and the high-temperature flue gas from the pot calciner exchanges heat and cools in the waste heat boiler;
the steam outlets of the plurality of waste heat boilers are communicated with the steam inlet of the steam turbine 11 through a steam main pipe 7, outlet steam of each waste heat boiler is collected in the steam main pipe 7, and steam in the steam main pipe 7 enters the steam turbine 11 to drive the steam turbine 11 to rotate for doing work;
the steam outlet of the steam turbine 11 is communicated with the steam inlet of the condenser 12;
the cooling water inlet of the condenser 12 is communicated with a water return pipeline of the heat supply external network, and the condenser 12 is cooled by water return of the heat supply external network;
the cooling water outlet of the condenser 12 is communicated with the cooling water inlet of the calciner water jackets (16.1-16. N) of the pot calciners through a water jacket water inlet main pipe 9, the outlet cooling water of the condenser 12 is collected in the water jacket water inlet main pipe 9 and then is divided into a plurality of branches to respectively enter the cooling water inlets of the calciner water jackets (16.1-16. N) of the pot calciners to cool the calciner water jackets (16.1-16. N) of the pot calciners;
the hot water outlets of the calciner water jackets (16.1-16. N) of the multiple pot calciners are communicated with the water supply pipeline of the heat supply external network through the water jacket water outlet main pipe 10, and the hot water of the hot water outlets of the calciner water jackets (16.1-16. N) are collected in the water jacket water outlet main pipe 10 and then sent to the water supply pipeline of the heat supply external network to supply hot water.
The tank calciner waste heat utilization system based on the mother pipe performs overall planning and comprehensive recovery on several waste heat resources of the tank calciner of the carbon plant, realizes the integrated utilization of waste heat of a plurality of tank calciners, designs the waste heat recovery into the mother pipe, performs centralized treatment on the flue gas waste heat and the water jacket cooling water waste heat of the plurality of tank calciners, and has remarkable economic benefit.
Preferably, the calciner water jacket (16.1-16. N) adopts countercurrent heat exchange, a cooling water inlet of the calciner water jacket (16.1-16. N) is positioned at a low-temperature end of the calciner water jacket, and a hot water outlet of the calciner water jacket (16.1-16. N) is positioned at a high-temperature end of the calciner water jacket.
In addition, preferably, the waste heat utilization system further comprises a generator 17, the generator 17 is coaxially connected with the steam turbine 11, and the steam turbine 11 drags the generator 17 to generate electricity.
The waste heat utilization system of the tank calciner based on the mother pipe considers that the temperature of the flue gas of the tank calciner is high and the grade is high, so that the waste heat boiler is combined with the steam turbine generator unit to convert the heat energy of the high-grade flue gas into high-quality electric energy; when the circulating cooling water of the steam turbine and the condenser and the waste heat of the water jacket cooling water of the calciner of the pot calciner are recovered, the waste heat is difficult to utilize in consideration of low temperature and low grade of the cooling water, and finally the waste heat of the cooling water is used for supplying hot water to the outside for the purpose of heat supply.
In addition, the circulating cooling water of the steam turbine and the condenser is connected with the cooling water heat exchange system of the calciner water jacket of the pot calciner in series, the cooling water firstly enters the condenser cooling system and then enters the water jacket cooling system, so that the optimal design of the two heat exchange systems after heat source characteristics is fully considered; compared with a serial connection mode that the water jacket cooling system is firstly entered and then enters the condenser cooling system, the cooling effect of the condenser can be obviously improved, the vacuum of the condenser is improved, and therefore the generated energy of the steam turbine generator unit is greatly improved.
In an optional embodiment of the present invention, the above waste heat utilization system further includes a condensate pump 13, an oxygen removal water supply system, and a water supply main pipe 8, where the condensate outlet of the condenser 12 is sequentially connected with the condensate pump 13 and the oxygen removal water supply system through the water supply main pipe 8 and the water supply inlets of the multiple waste heat boilers along the condensate flow direction, and the condensate at the outlet of the condenser 12 is pressurized by the condensate pump 13 and then enters the oxygen removal water supply system for treatment, and then is divided into multiple branches through the water supply main pipe 8 to enter each waste heat boiler respectively.
Preferably, the steam turbine 11 is provided with a steam extraction port, and steam discharged from the steam extraction port provides a heating steam source for the deoxidizing water supply system.
Further, preferably, the deoxygenated water supply system comprises a deoxygenator 14 and a water supply pump 15, the steam extraction port of the steam turbine 11 is communicated with the heating steam inlet of the deoxygenator 14 to provide a heating steam source for the deoxygenator 14, the water outlet of the deoxygenator 14 is communicated with the water inlet of the water supply pump 15, and the water outlet of the water supply pump 15 is communicated with the water supply inlets of the plurality of waste heat boilers 2 through the water supply main pipe 8.
In an optional embodiment of the present invention, the above waste heat utilization system further includes a flue gas main pipe 3, an induced draft fan 4, a desulfurization device 5 and a chimney 6, flue gas outlets of the plurality of waste heat boilers are sequentially communicated with the induced draft fan 4, the desulfurization device 5 and the chimney 6 along a flue gas flow direction through the flue gas main pipe 3, and flue gas of the waste heat boiler 2 enters the desulfurization device 5 for desulfurization treatment after being boosted by the induced draft fan 4 through the flue gas main pipe 3 and then is discharged to the atmosphere through the chimney 6.
The technological process of the waste heat utilization system of the calciner of the carbon plant is as follows:
the steam-water system flow comprises the following steps: the high-temperature steam generated by the plurality of waste heat boilers enters the steam turbine 11, expands in the steam turbine 11 to do work, enters the condenser 7, is cooled in the condenser 7 and is condensed into condensate, then enters the deoxidization water supply system through the condensate pump 13, after deoxidization by the deoxidizer in the deoxidization water supply system, is sent to the water supply main pipe 3 through the water supply pump 15, and the water supply main pipe 3 is divided into a plurality of branches to be respectively sent to the plurality of waste heat boilers to serve as water supply for each waste heat boiler, so that a steam-water circulation flow is completed.
Cooling water system flow: the backwater of the heat supply external network is used as a cooling water source of the condenser 7, enters a cooling water inlet of the condenser 7, enters a water jacket water inlet main pipe 9 after primary heat exchange in the condenser 7, then enters a plurality of cooling water inlets of the calciner water jackets (16.1-16. N) respectively by dividing into a plurality of branches, and is used as a cooling water source of each calciner water jacket (16.1-16. N) to perform secondary heat exchange in each calciner water jacket, and the hot water discharged from a hot water outlet of each calciner water jacket is collected to a water jacket water outlet main pipe 10 and then is sent to a water supply pipeline of the heat supply external network to supply hot water to the heat supply external network.
The flue gas system flow comprises the following steps: the high-temperature flue gas at 800-900 ℃ generated by each calciner enters each waste heat boiler, is cooled to about 150-200 ℃ after heat release in each waste heat boiler, is collected into a flue gas main pipe 3, is sent to a desulfurization device 5 through an induced draft fan 4, enters a chimney 6 after flue gas desulfurization treatment in the desulfurization device 5, and is finally discharged to the atmosphere.
While the foregoing disclosure shows exemplary embodiments of the invention, it should be noted that various changes and modifications could be made herein without departing from the scope of the invention as defined by the appended claims. Furthermore, although elements of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
Claims (7)
1. A waste heat utilization system of a tank calciner based on a mother pipe is characterized by comprising a plurality of tank calciners, a water jacket water inlet mother pipe, a water jacket water outlet mother pipe, a plurality of waste heat boilers, a steam mother pipe, a steam turbine and a condenser, wherein,
the flue gas outlet of each pot calciner is communicated with the flue gas inlet of each waste heat boiler, and the high-temperature flue gas from the pot calciner exchanges heat and cools in the waste heat boiler;
the steam outlets of the waste heat boilers are communicated with the steam inlet of the steam turbine through a steam main pipe, and the steam from the steam outlets of the waste heat boilers is collected in the steam main pipe, and the steam in the steam main pipe enters the steam turbine to drive the steam turbine to rotate for doing work;
the steam outlet of the steam turbine is communicated with the steam inlet of the condenser;
the cooling water inlet of the condenser is communicated with the water return pipeline of the heat supply external network, and the condenser is cooled by the water return of the heat supply external network;
the cooling water outlet of the condenser is communicated with the cooling water inlet of the calciner water jacket of each pot-type calciner through a water jacket water inlet main pipe, the cooling water of the cooling water outlet of the condenser is collected in the water jacket water inlet main pipe and then is divided into a plurality of branches to respectively enter the cooling water inlet of the calciner water jacket of each pot-type calciner so as to cool the calciner water jacket of each pot-type calciner;
the hot water outlet of the calciner water jackets of the multiple pot calciners is communicated with the water supply pipeline of the heat supply external network through the water jacket water outlet main pipe, and the hot water of the hot water outlets of the calciner water jackets is collected in the water jacket water outlet main pipe and then sent to the water supply pipeline of the heat supply external network to supply hot water.
2. The waste heat utilization system according to claim 1, further comprising a flue gas main pipe, an induced draft fan, a desulfurization device and a chimney, wherein flue gas outlets of the plurality of waste heat boilers are sequentially communicated with the induced draft fan, the desulfurization device and the chimney along a flue gas flow direction through the flue gas main pipe, and flue gas of the plurality of waste heat boilers enters the induced draft fan through the flue gas main pipe to be boosted, is subjected to desulfurization treatment through the desulfurization device, and is discharged to the atmosphere through the chimney.
3. The waste heat utilization system according to claim 1, further comprising a condensate pump, an oxygen-removing water supply system and a water supply main pipe, wherein the condensate outlet of the condenser is sequentially communicated with the condensate pump and the oxygen-removing water supply system through the water supply main pipe and the water supply inlets of the plurality of waste heat boilers along the condensate flow direction, and the condensate at the condensate outlet of the condenser enters the oxygen-removing water supply system for treatment after being pressurized by the condensate pump and then is divided into a plurality of branches through the water supply main pipe to enter each waste heat boiler respectively.
4. The waste heat utilization system of claim 3, wherein the steam turbine is provided with a steam extraction port, and steam exiting the steam extraction port provides a source of heating steam for the deoxygenated feedwater system.
5. The waste heat utilization system of claim 4, wherein the deoxygenated water supply system comprises a deoxygenator and a water supply pump, wherein a steam extraction port of the steam turbine is communicated with a heating steam inlet of the deoxygenator to provide a heating steam source for the deoxygenator, a water outlet of the deoxygenator is communicated with a water inlet of the water supply pump, and a water outlet of the water supply pump is communicated with water supply inlets of a plurality of waste heat boilers through a water supply main pipe.
6. The waste heat utilization system of claim 1, further comprising a generator coaxially coupled to the turbine, the turbine dragging the generator to generate electricity.
7. The waste heat utilization system of claim 1, wherein the cooling water inlet of the calciner water jacket is located at a low temperature end of the calciner water jacket and the hot water outlet of the calciner water jacket is located at a high temperature end of the calciner water jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710514738.3A CN107144146B (en) | 2017-06-29 | 2017-06-29 | Tank calciner waste heat utilization system based on mother pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710514738.3A CN107144146B (en) | 2017-06-29 | 2017-06-29 | Tank calciner waste heat utilization system based on mother pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107144146A CN107144146A (en) | 2017-09-08 |
| CN107144146B true CN107144146B (en) | 2023-11-24 |
Family
ID=59784637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710514738.3A Active CN107144146B (en) | 2017-06-29 | 2017-06-29 | Tank calciner waste heat utilization system based on mother pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107144146B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107763708A (en) * | 2017-11-07 | 2018-03-06 | 北京龙电宏泰环保科技有限公司 | It is used for the system and method for central heating suitable for multicomputer flue gas waste heat recovery |
| CN109163571B (en) * | 2018-08-27 | 2020-07-14 | 中冶华天南京工程技术有限公司 | Pot-type calcining furnace waste heat power generation system based on header pipe system |
| CN108979773B (en) * | 2018-08-27 | 2020-11-10 | 中冶华天南京工程技术有限公司 | High-efficient power generation system of burning furnace waste heat is forged to pot-type based on header system |
| CN109282659A (en) * | 2018-08-27 | 2019-01-29 | 中冶华天南京工程技术有限公司 | The heat power generating system of can-type calcine furnace calcined coke and fume afterheat comprehensive utilization |
| CN109323225A (en) * | 2018-08-27 | 2019-02-12 | 中冶华天南京工程技术有限公司 | Calcined coke and the integrated can-type calcine furnace afterheat generating system of flue gas waste heat recovery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201443978U (en) * | 2009-08-13 | 2010-04-28 | 济南海川炭素有限公司 | Carbon calciner waste heat generating system |
| CN201672815U (en) * | 2010-04-21 | 2010-12-15 | 济南海川投资集团有限公司 | Device for heating waste heat generating condensation water by calcined-furnace water-jacket water |
| CN202501759U (en) * | 2012-03-21 | 2012-10-24 | 济南海川投资集团有限公司 | Carbon calciner waste heat heating system |
| CN202991155U (en) * | 2012-12-31 | 2013-06-12 | 张茂勇 | Multi-heat-source generating heating system for carbon factory cascade waste heat recovery |
| CN206876002U (en) * | 2017-06-29 | 2018-01-12 | 中冶华天南京工程技术有限公司 | Can-type calcine furnace afterheat utilizing system based on piping-main scheme |
-
2017
- 2017-06-29 CN CN201710514738.3A patent/CN107144146B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201443978U (en) * | 2009-08-13 | 2010-04-28 | 济南海川炭素有限公司 | Carbon calciner waste heat generating system |
| CN201672815U (en) * | 2010-04-21 | 2010-12-15 | 济南海川投资集团有限公司 | Device for heating waste heat generating condensation water by calcined-furnace water-jacket water |
| CN202501759U (en) * | 2012-03-21 | 2012-10-24 | 济南海川投资集团有限公司 | Carbon calciner waste heat heating system |
| CN202991155U (en) * | 2012-12-31 | 2013-06-12 | 张茂勇 | Multi-heat-source generating heating system for carbon factory cascade waste heat recovery |
| CN206876002U (en) * | 2017-06-29 | 2018-01-12 | 中冶华天南京工程技术有限公司 | Can-type calcine furnace afterheat utilizing system based on piping-main scheme |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107144146A (en) | 2017-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107144146B (en) | Tank calciner waste heat utilization system based on mother pipe | |
| CN103351034B (en) | High-temperature gas cooled reactor and low-temperature multiple-effect distillation seawater desalinization coupling device | |
| CN102506588B (en) | Cement kiln waste heat comprehensive utilization power generation system and method | |
| CN107166979B (en) | Comprehensive utilization system for waste heat of calciner in carbon plant | |
| CN104848199A (en) | Method for recovering waste heat from power plant through absorption heat pump to heat boiler water | |
| CN203925625U (en) | Waste heat of coke oven crude gas reclaims power generation system | |
| CN102925165A (en) | Afterheat recovery system for raw coke oven gas of coke oven ascension pipe | |
| CN202647718U (en) | Supercritical clamminess heating machine set heat supply net drainage treating system | |
| CN203238215U (en) | Power generation device utilizing coke oven raw gas afterheat | |
| CN103242865A (en) | Device and method for generating electricity by utilizing waste heat of raw coke oven gas | |
| CN109163571B (en) | Pot-type calcining furnace waste heat power generation system based on header pipe system | |
| CN202066096U (en) | Supercritical direct air-cooling heat-supply network drainage system of heat supply unit | |
| CN104061031B (en) | Waste heat of coke oven crude gas reclaims power generation system and method | |
| CN205807387U (en) | Power plant's demineralized water absorbs residual neat recovering system | |
| CN107166978B (en) | Calcining furnace circulating cooling system and method based on waste heat recovery | |
| CN101793466A (en) | Power-generating boiler capable of cooling steel products and recovering afterheat in steelmaking and steel-rolling process | |
| CN201706902U (en) | Waste heat single-pressure recovery power generating system of dry method cement production line | |
| CN206876003U (en) | Charcoal ink factory's calcining furnace waste heat comprehensive utilization system | |
| CN115585440A (en) | Device and method for recycling waste heat of pyrite cinder | |
| CN204829289U (en) | Steam subtracts warm depressurized system | |
| CN206876002U (en) | Can-type calcine furnace afterheat utilizing system based on piping-main scheme | |
| CN107144147B (en) | Calcining furnace circulating cooling system and method based on waste heat utilization | |
| CN107840515A (en) | Slag and grey water treatment system | |
| CN207635319U (en) | A kind of steam power plant's low grade residual heat reuse means | |
| CN108979773B (en) | High-efficient power generation system of burning furnace waste heat is forged to pot-type based on header system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20231012 Address after: 210019 18 East Street, Fuchunjiang, Jianye District, Nanjing City, Jiangsu Province Applicant after: HUATIAN NANJING ENGINEERING & TECHNOLOGY CORPORATION, MCC Applicant after: HUATIAN ENGINEERING & TECHNOLOGY CORPORATION, MCC Address before: 210019 18 East Street, Fuchunjiang, Jianye District, Nanjing City, Jiangsu Province Applicant before: HUATIAN NANJING ENGINEERING & TECHNOLOGY CORPORATION, MCC |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |