CN202350555U - Carbon dioxide waste heat generating device of magnesium oxide calcination rotary kiln - Google Patents
Carbon dioxide waste heat generating device of magnesium oxide calcination rotary kiln Download PDFInfo
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- CN202350555U CN202350555U CN2011204386262U CN201120438626U CN202350555U CN 202350555 U CN202350555 U CN 202350555U CN 2011204386262 U CN2011204386262 U CN 2011204386262U CN 201120438626 U CN201120438626 U CN 201120438626U CN 202350555 U CN202350555 U CN 202350555U
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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
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- Y02P10/00—Technologies related to metal processing
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Abstract
The utility model relates to a carbon dioxide waste heat power generating device of a magnesium oxide calcination rotary kiln. A carbon dioxide outlet of a magnesium oxide rotary furnace arranged in the magnesium oxide calcination kiln is connected with a flue gas inlet box of a carbon dioxide waste heat boiler through a pipeline, and a flue gas outlet box of the carbon dioxide waste heat boiler is connected with a carbon dioxide liquefaction device through a pipeline. The carbon dioxide waste heat boiler is provided with a tube casing type heat exchanger, an evaporator of the carbon dioxide waste heat boiler is connected with a steam drum on the carbon dioxide waste heat boiler, a steam outlet of the steam drum is connected with an inlet of a superheater, an outlet of the superheater is connected with a steam inlet of a steam turbine through a main steam pipeline, the steam turbine is connected with a generator, a steam exhaust port of the steam turbine is connected with a medium inlet of a condenser through a pipeline, and a medium outlet of the condenser is connected with a condensate tank through a pipeline with a water pump. Waste heat of carbon dioxide produced in decomposition of magnesium ore can be fully recycled to generate power, energy can be saved, and the energy consumption and the cost of magnesium oxide production can be reduced.
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, be that the flue gas of discharging is produced saturated vapor through waste heat boiler for the mode of utilizing of above-mentioned production line residual heat resources, directly be used for producing or living needs, its utilization rate is very low, contaminated environment when causing a large amount of waste heats waste.
Summary of the invention
The purpose of the utility model provides a kind of magnesia calcination rotary kiln carbon dioxide device for generating power by waste heat that utilizes the carbon dioxide waste heat that produced in the magnesia calcination process to generate electricity.The utility model mainly is to adopt the carbon dioxide waste heat boiler to reclaim the carbon dioxide 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, carbon dioxide waste heat boiler, Turbo-generator Set, condensing unit and water circulation system.
Wherein, the carbon dioxide outlet that is located at the magnesia rotary furnace in the magnesia calcining kiln links to each other with the gas approach case of carbon dioxide waste heat boiler through pipeline, and this carbon dioxide exhaust-heat boiler flue gas EXPORT CARTON links to each other with the co 2 liquefaction device through pipeline.Above-mentioned carbon dioxide waste heat boiler is located on the steel profile framework, preferably which is provided with the staircase of being convenient to operate usefulness, and this carbon dioxide waste heat boiler constitutes 1 ≦ n ≦ 8,2 ≦ m ≦ 10 by m shell-and-tube heat exchange unit that is cascaded about the n group arranged side by side; This shell-and-tube heat exchange unit has the smoke pipe that has flue gas to pass through in some, and these smoke pipe two ends are separately fixed at up and down on two tube sheets, and the tube sheet periphery is fixed on the barrel-type casing openings at two ends.The smoke box that two ends link to each other with them respectively about being provided with between the above-mentioned m heat exchange unit, it is not only exhaust gases passes, also plays expansion joint simultaneously.Uppermost tube sheet of each heat exchange unit and gas approach case lower ends; The nethermost tube sheet of each heat exchange unit links to each other with exhanst gas outlet case upper end, and the lower housing portion of above-mentioned each heat exchange unit is equipped with water inlet pipe, and top is equipped with water outlet (vapour) pipe; This economizer water inlet links to each other with condensation water tank through steam-water pipeline and oxygen-eliminating device; Economizer section outlet pipe links to each other with top drum, and drum constitutes the loop through steam-water pipeline and evaporimeter, and the venthole of this drum links to each other with the superheater import; 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 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.Be preferably in smoke box and be provided with its compressed-air atomizer of air deashing device and be positioned at smoke box, interface is positioned at outside the smoke box.
The course of work of the utility model is: the high temperature carbon dioxide gas that magnesia calcination rotary kiln calcining back produces is drawn the smoke inlet above the cigarette air pipe line is delivered to the carbon dioxide heat recovery boiler from the magnesia calcination rotary kiln; Then from top to bottom; Through superheater-evaporimeter-economizer heat exchange; Or, connect into as a whole through connecting flue between each heat exchanger through evaporator-economizer heat exchange.Carbon dioxide after the heat exchange cooling is drawn from the exhanst gas outlet of carbon dioxide waste heat boiler and is delivered to the co 2 liquefaction device and carry out deep processing.Through the deaerated water after the oxygen-eliminating device deoxygenation; Deliver to the inlet of the economizer of carbon dioxide waste heat boiler through feed pump; Deliver in the drum as feedwater through economizer heating back; Evaporimeter is connected to become the loop through tedge and down-comer and drum respectively, and the saturated vapor of separating in the drum is delivered to Turbo-generator Set through superheater after further overheated, promotes Turbo-generator Set acting generating.Condensation in the condenser is introduced in exhaust steam after the work done, and condensed condensed water is delivered to condensation water tank, and the condensed water of condensation water tank is delivered to oxygen-eliminating device and carried out deoxygenation.
The utility model compared with prior art has following advantage:
1, the waste heat of the carbon dioxide of magnesium ore decomposition generation all reclaims and is used for generating, and energy savings cuts down the consumption of energy, and reduces the magnesia production cost,
2, the delivery temperature of carbon dioxide is reduced to below 108 ℃, 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.
Description of drawings
Fig. 1 is the utility model afterheat generating system process chart.
Fig. 2 is that carbon dioxide waste heat boiler master looks simplified schematic diagram among Fig. 1.
Fig. 3 is that the A of Fig. 2 is to view.
Label declaration in the accompanying drawing
1-magnesia calcination rotary kiln, 2-carbon dioxide heat recovery boiler, 3-drum, 4-superheater, 5-steam turbine, 6-generator, 7-condenser, 8-condensation water tank, 9-oxygen-eliminating device, 10-carbon dioxide exhaust-heat boiler flue gas inlet, 11-carbon dioxide waste heat boiler evaporimeter I, 12-carbon dioxide waste heat boiler connects flue 13-carbon dioxide waste heat boiler evaporimeter II 14-carbon dioxide waste heat boiler economizer I 15-carbon dioxide waste heat boiler economizer II 16-exhanst gas outlet.
The specific embodiment
In the simplified schematic diagram of Fig. 1, Fig. 2 and magnesia calcination rotary kiln carbon dioxide device for generating power by waste heat shown in Figure 3; The carbon dioxide outlet that is located at the magnesia rotary furnace in the magnesia calcining kiln links to each other with the gas approach case of carbon dioxide waste heat boiler through pipeline, and this carbon dioxide exhaust-heat boiler flue gas EXPORT CARTON links to each other with the co 2 liquefaction device through pipeline.Above-mentioned carbon dioxide waste heat boiler is located on the steel profile framework; Preferably which is provided with the staircase of being convenient to operate usefulness; On said frame, be provided with four shell-and-tube heat exchange units that are cascaded about in the of arranged side by side two groups; This shell-and-tube heat exchange unit has the smoke pipe that has flue gas to pass through in some, and these smoke pipe two ends are separately fixed on two tube sheets, and the tube sheet periphery is fixed on the barrel-type casing openings at two ends.The smoke box that two ends link to each other with them respectively about being provided with between two heat exchange units about above-mentioned, it is not only exhaust gases passes, also plays expansion joint simultaneously.Two groups of uppermost tube sheets of heat exchange unit and gas approach case lower ends, nethermost tube sheet links to each other with exhanst gas outlet case upper end, and best two exhanst gas outlet casees are merged into one.The lower housing portion of above-mentioned each heat exchange unit is equipped with water inlet pipe, and top is equipped with water outlet (vapour) pipe.Under every group of heat exchange unit two, totally 4 heat exchange units are the economizer section, its water inlet pipe with link to each other with oxygen-eliminating device that water tank connects; Every group above the heat exchange unit two; Totally 4 heat exchange units are the evaporimeter section; Its water inlet pipe links to each other with economizer section draining (vapour) pipe, and its blast pipe links to each other with top drum, and the venthole of this drum links to each other with the superheater import; 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.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 drain tank through the pipeline that is provided with water pump.Be preferably in smoke box and be provided with its compressed-air atomizer of air deashing device and be positioned at smoke box, interface is positioned at outside the smoke box.
With 150,000 tons of/year magnesia production lines of certain company is example, supposes that 1 year operation hours is 300 days, moves 24 hours every day, and then annual increase generated energy is 1312.5 ten thousand degree.
Claims (3)
1. magnesia calcination rotary kiln carbon dioxide device for generating power by waste heat; It is characterized in that: the carbon dioxide outlet that is located at the magnesia rotary furnace in the magnesia calcining kiln links to each other with the gas approach case of carbon dioxide waste heat boiler through pipeline; This carbon dioxide exhaust-heat boiler flue gas EXPORT CARTON links to each other with the co 2 liquefaction device through pipeline; This carbon dioxide waste heat boiler constitutes 1 ≦ n ≦ 8,2 ≦ m ≦ 10 by m shell-and-tube heat exchange unit that is cascaded about the n group arranged side by side; Uppermost tube sheet of each heat exchange unit and gas approach case lower ends; The nethermost tube sheet of each heat exchange unit links to each other with exhanst gas outlet case upper end, and the lower housing portion of above-mentioned each heat exchange unit is equipped with water inlet pipe, and top is equipped with water outlet or steam outlet pipe; This economizer water inlet links to each other with condensation water tank through steam-water pipeline and oxygen-eliminating device; Economizer section outlet pipe links to each other with top drum, and drum constitutes the loop through steam-water pipeline and evaporimeter, and the venthole of this drum links to each other with the superheater import; 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 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.
2. magnesia calcination rotary kiln carbon dioxide device for generating power by waste heat according to claim 1, it is characterized in that: on smoke box, be provided with the air deashing device, its compressed-air atomizer is positioned at smoke box, and interface is positioned at outside the smoke box.
3. magnesia calcination rotary kiln carbon dioxide device for generating power by waste heat according to claim 2, it is characterized in that: above-mentioned Turbo-generator Set is the condensing steam turbine generator group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204386262U CN202350555U (en) | 2011-11-08 | 2011-11-08 | Carbon dioxide waste heat generating device of magnesium oxide calcination rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204386262U CN202350555U (en) | 2011-11-08 | 2011-11-08 | Carbon dioxide waste heat generating device of magnesium oxide calcination rotary kiln |
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| Publication Number | Publication Date |
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| CN202350555U true CN202350555U (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011204386262U Expired - Fee Related CN202350555U (en) | 2011-11-08 | 2011-11-08 | Carbon dioxide waste heat generating device of magnesium oxide calcination rotary kiln |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985588A (en) * | 2014-04-04 | 2014-08-13 | 中南电力设计院电网工程公司 | Single-insulator ice-melting earthing knife switch |
| CN105756734A (en) * | 2016-04-14 | 2016-07-13 | 辽宁洁镁科技有限公司 | power generation system based on waste heat of rotary kiln byproduct |
| CN109339891A (en) * | 2018-11-14 | 2019-02-15 | 上海发电设备成套设计研究院有限责任公司 | A kind of magnesium is the conversion teletransmission of enclosed energy and the carbon sequestration System and method for of carrier |
| CN114754583A (en) * | 2022-03-16 | 2022-07-15 | 国网辽宁省电力有限公司鞍山供电公司 | Method for supplementing carbon dioxide for fused magnesia furnace and integrated furnace cover |
-
2011
- 2011-11-08 CN CN2011204386262U patent/CN202350555U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985588A (en) * | 2014-04-04 | 2014-08-13 | 中南电力设计院电网工程公司 | Single-insulator ice-melting earthing knife switch |
| CN105756734A (en) * | 2016-04-14 | 2016-07-13 | 辽宁洁镁科技有限公司 | power generation system based on waste heat of rotary kiln byproduct |
| CN109339891A (en) * | 2018-11-14 | 2019-02-15 | 上海发电设备成套设计研究院有限责任公司 | A kind of magnesium is the conversion teletransmission of enclosed energy and the carbon sequestration System and method for of carrier |
| CN109339891B (en) * | 2018-11-14 | 2023-08-29 | 上海发电设备成套设计研究院有限责任公司 | Closed energy conversion remote transmission and carbon fixation system and method using magnesium as carrier |
| CN114754583A (en) * | 2022-03-16 | 2022-07-15 | 国网辽宁省电力有限公司鞍山供电公司 | Method for supplementing carbon dioxide for fused magnesia furnace and integrated furnace cover |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
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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| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20201108 |
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| CF01 | Termination of patent right due to non-payment of annual fee |