CN202350553U - Waste heat power generation device for magnesia calcining rotary kiln - Google Patents
Waste heat power generation device for magnesia calcining rotary kiln Download PDFInfo
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- CN202350553U CN202350553U CN2011204386084U CN201120438608U CN202350553U CN 202350553 U CN202350553 U CN 202350553U CN 2011204386084 U CN2011204386084 U CN 2011204386084U CN 201120438608 U CN201120438608 U CN 201120438608U CN 202350553 U CN202350553 U CN 202350553U
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Abstract
The utility model discloses a waste heat power generation device for a magnesia calcining rotary kiln. A magnesia calcining kiln flue gas outlet in which a magnesia calcining rotary furnace is arranged is connected with a flue inlet of a flue waste heat boiler shell; the flue outlet of the flue waste heat boiler shell is connected with a chimney; a coal economizer, an evaporator and an overheater are arranged in the flue waste heat boiler shell from the bottom to top in sequence; the water inlet of the coal economizer is connected with a condensed water tank; the water outlet of the coal economizer is connected with a steam manifold; the steam manifold and the evaporator form a loop through a steam-water pipeline; the steam outlet of the steam manifold is connected with the inlet of the overheater; the outlet of the overheater is connected with the steam inlet of a steam turbine; the steam turbine is also connected with a power generator; the steam exhaust port of the steam turbine is connected with the media inlet of a condenser through a pipeline; and the media outlet of the condenser is connected with the condensed water tank through a pipeline which is provided with a water pump. By using the waste heat power generation device for the magnesia calcining kiln, various types of waste heat generated in a magnesia calcining process can be converted into electric energy.
Description
Technical field
The utility model relates to a kind of magnesia calcination rotary kiln afterheat generating system.
Background technology
Magnesia calcining and decomposing in calcination rotary kiln needs certain temperature, and calcining dual mode in outer calcining of kiln and the kiln is arranged at present.Adopt the mode of the outer calcining and decomposing of kiln to help to improve magnesian purity and quality, liquid carbon dioxide that simultaneously also can separating high-purity.But, outside kiln, in the calcination process,, also have the great amount of high-temperature flue gas to discharge because fuel combustion offers outside the required heat of the interior material calcining of kiln, temperature can reach more than 750 ℃.Calcined magnesite stone can decomposite the pure carbon dioxide of a large amount of high temperature in the rotary kiln simultaneously, and temperature can reach 630 ℃, also can decomposite the high-temperature oxydation magnesium dust, and temperature can reach 630 ℃.Therefore, effectively utilize waste heat in the magnesia production to become the effective way of present reduction magnesia production comprehensive energy consumption.At present; The mode of utilizing for above-mentioned production line residual heat resources is only the flue gas of discharging to be produced saturated vapor through waste heat boiler; Directly be used for producing or living needs; And the waste heat of high-temperature oxydation magnesium dust that decomposites and carbon dioxide does not reclaim and utilizes, so its utilization rate is very low, and contaminated environment when causing a large amount of waste heats to waste.
Summary of the invention
The purpose of the utility model provides a kind of magnesia calcination rotary kiln device for generating power by waste heat that utilizes the various waste heats that produced in the magnesia calcination process to generate electricity.The utility model mainly is to adopt waste heat boiler to reclaim each item waste heat that is produced in the magnesia calcination process, drives the Steam Turbine generating by the superheated steam that this waste heat produced, and waste heat is converted into electric energy.
The utility model mainly includes: magnesia calcination rotary kiln, smoke and waste steam boiler, carbon dioxide waste heat boiler, magnesia powder waste heat boiler, Turbo-generator Set, condensing unit and water circulation system.
Wherein, in establish the magnesia rotary furnace magnesia calcining kiln exhanst gas outlet link to each other with the gas approach of smoke and waste steam boiler housing through pipeline, the exhanst gas outlet of this smoke and waste steam boiler housing links to each other with chimney through the pipeline that is provided with air-introduced machine.Be provided with economizer, evaporimeter and superheater in the above-mentioned smoke and waste steam boiler housing from the bottom to top successively.This economizer water inlet links to each other with condensation water tank through steam-water pipeline and oxygen-eliminating device; This economizer delivery port links to each other with drum through steam-water pipeline; This drum constitutes the loop through steam-water pipeline and evaporimeter; The venthole of this drum links to each other with the superheater import, and this superheater outlet links to each other with the steam turbine air intake through major steam line, and this steam turbine links to each other with generator again.The exhaust port of steam turbine links to each other with the import of condenser medium through steam-water pipeline, and the condenser media outlet links to each other with condensation water tank through the pipeline that is provided with water pump.
Best, magnesia rotary furnace blast pipe links to each other with the gas feed of carbon dioxide waste heat boiler housing through pipeline, and this carbon dioxide waste heat boiler housing gas vent links to each other with the co 2 liquefaction device through pipeline.Be provided with economizer and evaporimeter from the bottom to top successively in the above-mentioned carbon dioxide waste heat boiler housing.This economizer water inlet links to each other with condensation water tank through steam-water pipeline and oxygen-eliminating device; This economizer delivery port links to each other with drum through steam-water pipeline; This drum constitutes the loop through steam-water pipeline and evaporimeter, and the venthole of this drum links to each other with the superheater of smoke and waste steam boiler.
Best, magnesia rotary furnace discharge gate links to each other with the solids inlet of magnesia waste heat boiler housing through pipeline, and the solid outlet of this magnesia waste heat boiler housing links to each other with the magnesia purifying plant through pipeline.Be provided with economizer and evaporimeter from the bottom to top successively in the above-mentioned magnesia waste heat boiler housing.This economizer water inlet links to each other with condensation water tank through steam-water pipeline and oxygen-eliminating device; This economizer delivery port links to each other with drum through steam-water pipeline; This drum constitutes the loop through steam-water pipeline and evaporimeter, and the venthole of this drum links to each other with the superheater of smoke and waste steam boiler.Best, above-mentioned Turbo-generator Set is the condensing steam turbine generator group; Above-mentioned deaerating type of cycles is that the deaeration in condenser system also can adopt thermal de-aeration system or chemical deoxidization system; Above-mentioned smoke and waste steam boiler superheater is equipped with Desuperheating device.
The course of work of the utility model is: the magnesia calcining kiln comes heated oxide magnesium rotary furnace through burning coal or other fuel; Its flue gas that produces; Be sent in the smoke and waste steam boiler through pipeline; Through with smoke and waste steam boiler in economizer, evaporimeter and superheater heat exchange after, through air-introduced machine, deliver to the chimney emptying.The magnesia rotary furnace decomposes the high temperature carbon dioxide gas that produces and delivers to the carbon dioxide waste heat boiler through gas piping; After lowering the temperature through economizer in the carbon dioxide waste heat boiler and evaporimeter heat exchange, deliver to the co 2 liquefaction device and liquefy or do other purposes.The magnesia rotary furnace decomposes the high-temperature oxydation magnesium granules that produces and delivers to the magnesia waste heat boiler through pipeline, and after economizer in the waste heat boiler and evaporimeter heat exchange, the magnesia powder that temperature reduces is sent to the magnesia purifying plant and further processes.After the condensed water process oxygen-eliminating device deoxygenation in the condensation water tank; Deliver to respectively in smoke and waste steam boiler, carbon dioxide waste heat boiler and the magnesia powder waste heat boiler and carry out heat exchange; Wherein, The saturated vapor that the saturated vapor that the carbon dioxide waste heat boiler produces with the magnesia powder waste heat boiler and flue gas boiler produce is incorporated the superheater of flue gas boiler into, produces superheated steam and delivers to Turbo-generator Set, promotes Turbo-generator Set acting generating.Exhaust steam after the generating condenses into water through condensing unit and delivers to condensation water tank, through oxygen-eliminating device and water circulating pump and three waste heat boilers formation closed circuits.
The utility model compared with prior art has following advantage:
One, the magnesia rotary furnace has through the product that the heating of magnesia calcining kiln obtains: 1) the fired coal combustion afterproduct flue gas of heating rotary kiln; 2) magnesium ore decomposes the carbon dioxide gas that produces; 3) magnesium ore decomposes the magnesia powder that produces.This afterheat generating system can with these three waste heats that produce in the magnesia calcination process all reclaim and be used for the generating, energy savings cuts down the consumption of energy.
Two. this steam turbine generator system adopts condensing turbine, improves the steam turbine power generation amount.According to system's characteristics, carry out parameter optimization, rationally confirm waste heat boiler steam parameter, steam turbine main steam condition, thus the structure of appropriate design steam turbine; Turbine speed adopts 3000r/min, without reductor, reduces the fault point.
Three. this utility model can effectively cut down the consumption of energy and power consumption, reduces the magnesia production cost, improves the problems such as environmental thermal pollution that the calcination rotary kiln waste heat is caused, and its economic benefit and social benefit are huge.
Four, this electricity generation system can be reduced to magnesia rotary kiln smog discharge temperature below 128 ℃, and the delivery temperature of carbon dioxide is reduced to below 108 ℃, and the drop temperature of magnesia material is reduced to below 120 ℃.
Description of drawings
Fig. 1 is the utility model afterheat generating system process chart.
Fig. 2 looks the section simplified schematic diagram for the utility model smoke and waste steam boiler master.
Fig. 3 is Fig. 2 side-looking section simplified schematic diagram.
Fig. 4 looks the section simplified schematic diagram for the utility model carbon dioxide waste heat boiler master.
Fig. 5 is that the A of Fig. 4 is to view.
Fig. 6 looks the section simplified schematic diagram for the utility model magnesia waste heat boiler master.
Fig. 7 is the B-B view of Fig. 6.
Label declaration in the accompanying drawing
1 - magnesia rotary kiln 2 - MgO calcined kiln 3 - flue gas waste heat boiler 4 - flue gas waste heat boiler flue gas imports 5 - flue gas waste heat boiler flue gas outlet ? 6 - Cited fan 7 - chimney 8 - flue gas waste heat boiler economizer 9 - flue gas waste heat boiler evaporator 10 - flue gas waste heat boiler superheater 11 - Vacuum deaerator ? 12 - condensate tank ? 13 - flue gas waste heat boiler drum ? 14 - the main steam pipe 15 - Less temperature device ? 16 - Turbine 17 - Generator ? 18 - condenser? ? 19 - Carbon dioxide waste heat boiler ? 20 - Carbon dioxide waste heat boiler gas inlet 21 - Carbon dioxide gas waste heat boiler outlet 22 - Carbon dioxide liquefaction plant 23 - Carbon dioxide waste heat boiler economizer 24 - carbon heat boiler evaporator ? 25 - Carbon dioxide waste heat boiler drum 26 - Magnesium waste heat boiler 27 - magnesia solid waste heat boiler imports 28 - magnesia solid waste heat boiler outlet 29 - magnesium oxide purification unit? 30 - Magnesium waste heat boiler economizer 31 - Magnesium waste heat boiler evaporator 32 - Magnesium waste heat boiler drum 33 - rapping cleaning devices.
The specific embodiment
In the simplified schematic diagram of Fig. 1, Fig. 2 and magnesia calcination rotary kiln device for generating power by waste heat shown in Figure 3; In establish the magnesia rotary furnace magnesia calcining kiln exhanst gas outlet link to each other with the gas approach of smoke and waste steam boiler housing through pipeline, the exhanst gas outlet of this smoke and waste steam boiler housing links to each other with chimney through the pipeline that is provided with air-introduced machine.Be provided with economizer, evaporimeter and superheater in the above-mentioned smoke and waste steam boiler housing from the bottom to top successively.This economizer water inlet links to each other with condensation water tank through steam-water pipeline and vacuum dust cather; This economizer delivery port links to each other with drum through steam-water pipeline; This drum constitutes the loop through steam-water pipeline and evaporimeter, and the venthole of this drum links to each other with the superheater import that is equipped with Desuperheating device, and this superheater outlet links to each other with the steam turbine air intake through major steam line; This steam turbine links to each other with generator again, and above-mentioned Turbo-generator Set is the condensing steam turbine generator group.The exhaust port of steam turbine links to each other with the import of condenser medium through pipeline, and the condenser media outlet links to each other with condensation water tank through the pipeline that is provided with water pump.
In the simplified schematic diagram of Fig. 1, Fig. 4 and magnesia calcination rotary kiln device for generating power by waste heat shown in Figure 5; Magnesia rotary furnace blast pipe links to each other with the gas feed of carbon dioxide waste heat boiler housing through pipeline, and this carbon dioxide waste heat boiler housing gas vent links to each other with the co 2 liquefaction device through pipeline.Be provided with economizer and evaporimeter from the bottom to top successively in the above-mentioned carbon dioxide waste heat boiler housing.This economizer water inlet links to each other with condensation water tank through steam-water pipeline and oxygen-eliminating device; This economizer delivery port links to each other with drum through steam-water pipeline; This drum constitutes the loop through steam-water pipeline and evaporimeter, and the venthole of this drum links to each other with the superheater of smoke and waste steam boiler.
In the simplified schematic diagram of Fig. 1, Fig. 6 and magnesia calcination rotary kiln device for generating power by waste heat shown in Figure 7; Magnesia rotary furnace discharge gate links to each other with the solids inlet of magnesia waste heat boiler housing through pipeline, and the solid outlet of this magnesia waste heat boiler housing links to each other with the magnesia purifying plant through pipeline.Be provided with economizer and evaporimeter from the bottom to top successively in the above-mentioned magnesia waste heat boiler housing.This economizer water inlet links to each other with condensation water tank through steam-water pipeline and oxygen-eliminating device; This economizer delivery port links to each other with drum through steam-water pipeline; This drum constitutes the loop through steam-water pipeline and evaporimeter, and the venthole of this drum links to each other with the superheater of smoke and waste steam boiler.Above-mentioned economizer outside is provided with ash removal equipment for flapping.
With 150,000 tons of/year magnesia production lines of certain company is example, its 25 megawatts of can generating electricity.
Claims (6)
1. magnesia calcination rotary kiln device for generating power by waste heat; It is characterized in that: in establish the magnesia rotary furnace magnesia calcining kiln exhanst gas outlet link to each other with the gas approach of smoke and waste steam boiler housing through pipeline; The exhanst gas outlet of this smoke and waste steam boiler housing links to each other with chimney through the pipeline that is provided with air-introduced machine; Be provided with economizer, evaporimeter and superheater in the above-mentioned smoke and waste steam boiler housing from the bottom to top successively, this economizer water inlet links to each other with condensation water tank through steam-water pipeline and oxygen-eliminating device, and this economizer delivery port links to each other with drum through steam-water pipeline; This drum constitutes the loop through steam-water pipeline and evaporimeter; The venthole of this drum links to each other with the superheater import, and this superheater outlet links to each other with the steam turbine air intake through major steam line, and this steam turbine links to each other with generator again; The exhaust port of steam turbine links to each other with the import of condenser medium through steam-water pipeline, and the condenser media outlet links to each other with condensation water tank through the pipeline that is provided with water pump.
2. magnesia calcination rotary kiln device for generating power by waste heat according to claim 1; It is characterized in that: magnesia rotary furnace blast pipe links to each other with the gas feed of carbon dioxide waste heat boiler housing through pipeline; This carbon dioxide waste heat boiler housing gas vent links to each other with the co 2 liquefaction device through pipeline; Be provided with economizer and evaporimeter from the bottom to top successively in the above-mentioned carbon dioxide waste heat boiler housing; This economizer water inlet links to each other with condensation water tank through steam-water pipeline and oxygen-eliminating device; This economizer delivery port links to each other with drum through steam-water pipeline, and this drum constitutes the loop through steam-water pipeline and evaporimeter, and the venthole of this drum links to each other with the superheater of smoke and waste steam boiler.
3. magnesia calcination rotary kiln device for generating power by waste heat according to claim 1; It is characterized in that: magnesia rotary furnace discharge gate links to each other with the solids inlet of magnesia waste heat boiler housing through pipeline; The solid outlet of this magnesia waste heat boiler housing links to each other with the magnesia purifying plant through pipeline; Be provided with economizer and evaporimeter from the bottom to top successively in the above-mentioned magnesia waste heat boiler housing; This economizer water inlet links to each other with condensation water tank through steam-water pipeline and oxygen-eliminating device; This economizer delivery port links to each other with drum through steam-water pipeline, and this drum constitutes the loop through steam-water pipeline and evaporimeter, and the venthole of this drum links to each other with the superheater of smoke and waste steam boiler.
4. magnesia calcination rotary kiln device for generating power by waste heat according to claim 3 is characterized in that: above-mentioned Turbo-generator Set is the condensing steam turbine generator group.
5. magnesia calcination rotary kiln device for generating power by waste heat according to claim 4 is characterized in that: above-mentioned smoke and waste steam boiler superheater is equipped with Desuperheating device.
6. magnesia calcination rotary kiln device for generating power by waste heat according to claim 4 is characterized in that: above-mentioned oxygen-eliminating device or for the deaeration in condenser system or for the thermal de-aeration system or for the chemical deoxidization system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204386084U CN202350553U (en) | 2011-11-08 | 2011-11-08 | Waste heat power generation device for magnesia calcining rotary kiln |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011204386084U CN202350553U (en) | 2011-11-08 | 2011-11-08 | Waste heat power generation device for magnesia calcining rotary kiln |
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| CN202350553U true CN202350553U (en) | 2012-07-25 |
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| CN2011204386084U Expired - Fee Related CN202350553U (en) | 2011-11-08 | 2011-11-08 | Waste heat power generation device for magnesia calcining rotary kiln |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384662A (en) * | 2011-11-08 | 2012-03-21 | 大连易世达新能源发展股份有限公司 | Waste heat power generation device of magnesium oxide calcining rotary kiln |
| CN104121776A (en) * | 2014-07-04 | 2014-10-29 | 石家庄新华能源环保科技股份有限公司 | Industrial furnace with power generation device |
-
2011
- 2011-11-08 CN CN2011204386084U patent/CN202350553U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384662A (en) * | 2011-11-08 | 2012-03-21 | 大连易世达新能源发展股份有限公司 | Waste heat power generation device of magnesium oxide calcining rotary kiln |
| CN104121776A (en) * | 2014-07-04 | 2014-10-29 | 石家庄新华能源环保科技股份有限公司 | Industrial furnace with power generation device |
| CN104121776B (en) * | 2014-07-04 | 2016-06-01 | 石家庄新华能源环保科技股份有限公司 | With the industrial furnace of power generation assembly |
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Address after: Floor 20, block B, No. 32a, Torch Road, high tech Industrial Park, Dalian, Liaoning Province, 116000 Patentee after: Lida Group Co., Ltd Address before: 116023 Torch Road 32, hi tech Zone, Liaoning, Dalian Patentee before: DALIAN EAST NEW ENERGY DEVELOPMENT Co.,Ltd. |
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| 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: 20120725 Termination date: 20201108 |