CN214120801U - Cement kiln high temperature flue gas waste heat recovery device - Google Patents
Cement kiln high temperature flue gas waste heat recovery device Download PDFInfo
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- CN214120801U CN214120801U CN202022822378.3U CN202022822378U CN214120801U CN 214120801 U CN214120801 U CN 214120801U CN 202022822378 U CN202022822378 U CN 202022822378U CN 214120801 U CN214120801 U CN 214120801U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
- Y02P40/121—Energy efficiency measures, e.g. improving or optimising the production methods
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model belongs to the field of cement production, in particular to a cement kiln high-temperature flue gas waste heat recovery device, which comprises a cement rotary kiln, a kiln tail decomposing furnace, a kiln head grate cooler, a boiler, a steam turbine and a generator, wherein the boiler is matched with a superheater, the flue gas of the kiln tail decomposing furnace and the kiln head grate cooler sequentially passes through the heat economizer, the coal economizer and the air preheater and is sent to the evaporator, the water is fed into the evaporator through the deaerator and supplied by the water supply pump, the water is fed into the evaporator and is subjected to heat exchange evaporation with the flue gas to form steam, the steam is further sent to the superheater through the steam pocket to form superheated steam, the superheated steam is sent to the steam turbine to drive the generator to generate electricity, the steam after acting passes through the condenser, the condensate water is sent to the water storage tank, the evaporator is connected to the heat exchanger after giving vent to anger, the heat exchanger is connected to the dust remover after giving vent to anger, the flue gas after dust removal is purified through the desulfurizing tower and is sent to. The device promotes the recovery and utilization rate of the flue gas waste heat and reduces the energy consumption of the waste heat boiler.
Description
Technical Field
The utility model belongs to the cement manufacture field, in particular to cement kiln high temperature flue gas waste heat recovery device.
Background
If the waste heat of the high-temperature flue gas of the cement kiln can not be fully recycled, the waste heat of the high-temperature flue gas of the cement kiln is greatly wasted, and the environment is greatly polluted.
SUMMERY OF THE UTILITY MODEL
In order to the above situation, the utility model provides a cement mill discharging device.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a cement kiln high-temperature flue gas waste heat recovery device comprises a cement rotary kiln, a kiln tail decomposing furnace and a kiln head grate cooler, and further comprises a boiler, a steam turbine and a generator, wherein the boiler is provided with a superheater, a coal economizer and an air preheater in a matching manner, flue gas of the kiln tail decomposing furnace and the kiln head grate cooler of the cement rotary kiln sequentially passes through the superheater, the coal economizer and the air preheater of the boiler and then is conveyed to an air inlet of an evaporator, inlet water of the evaporator is treated by a deaerator and is supplied by a water supply pump, inlet water of the evaporator is evaporated by heat exchange with the flue gas to form steam, the steam is conveyed to a steam inlet end of the superheater by a steam pocket, the superheated steam is further subjected to heat exchange to form superheated steam and is conveyed to the steam turbine to drive the generator to generate electricity, the steam after acting forms condensed water by a condenser and is conveyed to a water storage tank, cooling water of the, the gas outlet end of the heat exchanger is connected to the gas inlet of the dust remover, the gas outlet of the dust remover is connected to the induced draft fan, the flue gas after dust removal treatment is purified by the desulfurizing tower and is delivered to the chimney for evacuation, and the water outlet of the water storage tank is heated by the heat exchanger and then is delivered to the deaerator for the evaporator to recycle.
Furthermore, the water supply pump is also used for water inlet of an economizer of the boiler, a first valve is arranged on the water inlet pipeline of the economizer, and a steam outlet of the economizer is connected to the steam pocket.
And further, the inlet air of the air preheater exchanges heat with the flue gas and is sent to a boiler hearth.
Furthermore, a water outlet of the steam pocket is connected to a water inlet end of the deaerator through a second valve.
The utility model discloses still including other subassemblies that can make its normal use, be the conventional technical means in this field, in addition, the utility model discloses in add the device or the subassembly of injecing, if: superheater, economizer, air heater, deaerator, drum, condenser, cooling tower and desulfurizing tower, and other pipeline valves all adopt the prior art in this field.
The utility model has the advantages as follows:
this cement kiln high temperature flue gas waste heat recovery device through the multiple heat transfer utilization to cement kiln flue gas waste heat, promotes cement kiln high temperature flue gas waste heat recovery utilization ratio as far as possible, alleviates the boiler burden, reduces energy consumption, increases steam output, improves system power generation ability, reduces evacuation tail gas heat energy content, alleviates environmental impact.
Drawings
FIG. 1 is a schematic structural diagram of a high-temperature flue gas waste heat recovery device of a cement kiln in the embodiment.
Detailed Description
The technical solution of the present invention will be described more clearly and completely with reference to specific embodiments, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments.
Examples
As shown in figure 1, a cement kiln high-temperature flue gas waste heat recovery device comprises a cement rotary kiln 1, a kiln tail decomposing furnace 2 and a kiln head grate cooler 3, and further comprises a boiler 4, a steam turbine 5 and a generator 6, wherein the boiler is provided with a superheater 7, an economizer 8 and an air preheater 9 in a matching way, flue gas of the kiln tail decomposing furnace and the kiln head grate cooler of the cement rotary kiln sequentially passes through the superheater, the economizer and the air preheater of the boiler and then is conveyed to an air inlet of an evaporator 10, inlet water of the evaporator is treated by a deaerator 11 and is supplied by a water supply pump, inlet water of the evaporator is evaporated by heat exchange with the flue gas to form steam, the steam is conveyed to a steam inlet end of the superheater by a steam drum 12 and is further subjected to heat exchange to form superheated steam to be conveyed to the steam turbine to drive the generator to generate electricity, the steam after acting forms condensed water by a condenser 13 and is conveyed to a water storage tank 14, cooling water of the condenser is circularly supplied by a cooling tower 15 through a cooling pump 16, the gas outlet of the evaporator is connected to the gas inlet end of the heat exchanger 17, the gas outlet end of the heat exchanger is connected to the gas inlet of the dust remover 18, the gas outlet of the dust remover is connected to the induced draft fan 19, the flue gas after dust removal treatment is purified by the desulfurizing tower 20 and is sent to the chimney 21 for emptying, and the water outlet of the water storage tank is heated by the heat exchanger and then is sent to the deaerator for the evaporator to recycle.
The water supply pump is also used for water inlet of an economizer of the boiler, a first valve 22 is arranged on the water inlet pipeline of the economizer, and a steam outlet of the economizer is connected to the steam pocket.
And the inlet air of the air preheater exchanges heat with the flue gas and is then sent to a boiler hearth.
And the water outlet of the steam drum is connected to the water inlet end of the deaerator through a second valve 23.
The technical solution of the present invention is not limited to the above-mentioned specific embodiments, and many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.
Claims (4)
1. The utility model provides a cement kiln high temperature flue gas waste heat recovery device, includes cement rotary kiln and kiln tail dore decomposition stove and kiln head grate cooler, its characterized in that: the boiler is provided with a superheater, a steam turbine and a generator in a matching way, the flue gas of a kiln tail decomposing furnace and a kiln head grate cooler of the rotary cement kiln sequentially passes through the superheater, the economizer and the air preheater of the boiler and then is conveyed to an air inlet of the evaporator, the inlet water of the evaporator is processed by a deaerator and is supplied by a water supply pump, the inlet water of the evaporator exchanges heat with the flue gas and evaporates to form steam, the steam is conveyed to a steam inlet end of the superheater through a steam pocket, the steam is further exchanged heat to form superheated steam and is conveyed to the steam turbine to drive the generator to generate electricity, the steam after acting forms condensate water through a condenser and is conveyed to a water storage tank, cooling water of the condenser is circularly supplied by a cooling tower through a cooling pump, an air outlet of the evaporator is connected to an air inlet end of the heat exchanger, an air outlet end of the heat exchanger is connected to an air inlet of a dust remover, and an air outlet of the dust remover is connected to a draught fan, the flue gas after dust removal treatment is purified by a desulfurizing tower and sent to a chimney for emptying, and the outlet water of the water storage tank is heated by a heat exchanger and then sent to a deaerator for cyclic utilization by an evaporator.
2. The cement kiln high-temperature flue gas waste heat recovery device according to claim 1, characterized in that: the water supply pump is also used for water inlet of an economizer of the boiler, a first valve is arranged on the water inlet pipeline of the economizer, and a steam outlet of the economizer is connected to the steam pocket.
3. The cement kiln high-temperature flue gas waste heat recovery device according to claim 1, characterized in that: and the inlet air of the air preheater exchanges heat with the flue gas and is then sent to a boiler hearth.
4. The cement kiln high-temperature flue gas waste heat recovery device according to claim 1, characterized in that: and the water outlet of the steam drum is connected to the water inlet end of the deaerator through a second valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022822378.3U CN214120801U (en) | 2020-11-27 | 2020-11-27 | Cement kiln high temperature flue gas waste heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022822378.3U CN214120801U (en) | 2020-11-27 | 2020-11-27 | Cement kiln high temperature flue gas waste heat recovery device |
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| Publication Number | Publication Date |
|---|---|
| CN214120801U true CN214120801U (en) | 2021-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022822378.3U Active CN214120801U (en) | 2020-11-27 | 2020-11-27 | Cement kiln high temperature flue gas waste heat recovery device |
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| Country | Link |
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| CN (1) | CN214120801U (en) |
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2020
- 2020-11-27 CN CN202022822378.3U patent/CN214120801U/en active Active
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