CN203336977U - Calcinating and waste heat recovering device - Google Patents
Calcinating and waste heat recovering device Download PDFInfo
- Publication number
- CN203336977U CN203336977U CN2013200663000U CN201320066300U CN203336977U CN 203336977 U CN203336977 U CN 203336977U CN 2013200663000 U CN2013200663000 U CN 2013200663000U CN 201320066300 U CN201320066300 U CN 201320066300U CN 203336977 U CN203336977 U CN 203336977U
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- rotary kiln
- kettle
- hot
- waste heat
- pipeline
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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
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Abstract
The utility model discloses a calcinating and waste heat recovering device. The calcinating and waste heat recovering device is characterized in that the calcinating and waste heat recovering device comprises a first rotary kiln, a second rotary kiln or a heating kettle, a hot blast stove, a heat exchanging device and a heat exchanging kettle; according to the connecting modes of the device, a hot air outlet of the hot blast stove is connected with a hot air inlet in the bottom portion of the first rotary kiln through a pipe, a hot air outlet in the top portion of the first rotary kiln is connected with a hot air inlet in the bottom portion of the second rotary kiln or a hot air inlet in the bottom portion of the heating kettle through a pipe, a material outlet of the second rotary kiln or a material outlet of the heating kettle is connected with a material inlet of the first rotary kiln through a pipe, the upper portion of a material outlet of the first rotary kiln is communicated with a material inlet of the heat exchanging device through a pipe, the lower portion of material outlet of the first rotary kiln is connected with a material inlet of the heat exchanging kettle through a pipe, a cooling water outlet of the heat exchanging device is communicated with a cooling water inlet of the heat exchanging kettle through a pipe. By means of the calcinating and waste heat recovering device, the waste heat recovery rate can be improved, the requirements of saving energy and reducing emission can be achieved and the production cost of an enterprise can be lowered.
Description
Technical field
The utility model relates to a kind of calcining and waste heat recovery apparatus, belongs to chemical field.
Background technology
Inorganic chemical industry industry and metallurgy industry often run into the production process of calcining, pyrolysis, as utilize changbaiite etc. containing calcium carbonate rock 800～1000 ℃ of calcinings, it is decomposed and generates lime; Kaolin calcined dehydration, make its short texture porous, is easy to further processing aluminium oxide; High-temperature calcination makes titanium dioxide change crystal formation, improves its character of use; The high-temperature calcination siderite makes it change ferromagnetic tri-iron tetroxide into, then with magnetic method recovery, enrichment; Etc..Calcining equipment commonly used has reverberatory furnace, multiple hearth furnace, shaft furnace, rotary kiln, fluidized bed furnace, executes wind furnace etc.Rotary kiln is because the advantage that has that calcining is heated evenly, the product burning quality is good, the fault that operates steadily is low, production capacity is large etc. is widely used in thermal technology's firing equipment of the industries such as building materials, mining, metallurgy, chemical industry, non-ferrous metal.
Calcining is a very high process of energy consumption, and the production of energy-conserving and environment-protective, low-carbon (LC) is the topic of government and enterprises pay attention.Current calcined by rotary kiln equipment there is no residual neat recovering system or the residual neat recovering system design is unreasonable, causes the waste heat recovery rate low, and the calcination process energy consumption is high, can't meet the production requirement of energy-saving and emission-reduction.
Summary of the invention
The utility model is high for existing calciner rotary kiln energy consumption, can not take full advantage of the shortcoming of heat energy, a kind of equipment that reduces the calcination process energy consumption has been proposed, can take full advantage of the heat energy of calcination process by the utility model, greatly reduce the energy consumption of calcining, and the waste heat of energy removal process, for other workshop sections, greatly reduce the energy consumption cost of manufacturing enterprise, reach the purpose of energy-conserving and environment-protective.
The utility model is achieved in that
Calcining and waste heat recovery apparatus, comprise rotary kiln 1, No. two rotary kilns 2 or heating kettle 2, hot-blast stove 3, heat exchanger 4, heat exchange kettle 5; The hot-blast outlet of hot-blast stove 3 is connected with the hot blast import of rotary kiln 1 bottom with pipeline, the hot-blast outlet at rotary kiln 1 top is connected with the hot blast import of No. two rotary kilns 2 or heating kettle 2 bottoms with pipeline, and the discharging opening of No. two rotary kilns 2 or heating kettle 2 is connected with pipeline with the charging aperture of a rotary kiln 1; The top of the discharging opening of a rotary kiln 1 is connected with the charging aperture of heat exchanger 4 with pipeline, the bottom of rotary kiln 1 discharging opening is connected with the charging aperture of heat exchange kettle 5 with pipeline, and the coolant outlet of heat exchanger 4 is connected with the cooling water inlet of heat exchange kettle 5 with pipeline.
Its operation principle is: calcination process adopts two rotary kilns or a rotary kiln and a heating kettle, the raw material that will calcine is put into to No. two rotary kilns 2 or heating kettle 2, the waste heat of being come by rotary kiln 1 is as the heat energy of No. two rotary kilns 2 or heating kettle 2 calcinings, material rotary calcining a period of time in No. two rotary kilns 2 or heating kettle 2, the effect such as play preheating material, dehydrate; Material after rotary kiln 2 or heating kettle 2 calcinings enters rotary kiln 1 No. one, the heat energy produced by hot-blast stove 3 is as the heat energy of rotary kiln 1 calcining, material is fired to and reaches technological requirement at a rotary kiln 1, the gaseous matter that calcination process produces goes to other workshop sections after heat exchanger 4 coolings, the solid product that calcining produces proceeds to heat exchange kettle 5, obtain product through the water quench of being come by heat exchanger 4, cooling water obtains high-temperature water or superheated steam after heat exchange kettle 5 heat exchange, for other workshop sections.
The utility model has the advantages that:
1, the waste heat produced with rotary kiln 1 calcining is used as the heat energy of rotary kiln 2 calcinings, and the energy is maximized the use, and energy consumption is few;
2, material is through the calcining of rotary kiln 2, can remove moisture or the crystallization water of material, make material obtain drying, further highly beneficial in the calcining of rotary kiln 1 to material, because material obtains drying and preheating, reduce energy consumption and the time of material in rotary kiln 1 calcining, can improve the burning quality of product;
3, cooling water enters heat exchange kettle 5 heat exchange after heat exchanger 4 heat exchange, can obtain high-temperature water or overheated steam, and for the heat energy of other workshop sections, the rate of recovery of waste heat is high, reduces energy consumption and the production cost of enterprise;
The accompanying drawing explanation
Fig. 1 is the calciner structure chart of the embodiment of the present invention 1;
Fig. 2 is the calciner structure chart of the embodiment of the present invention 1, and numbering and title are as follows:
1 is a rotary kiln; 2 is No. two rotary kilns or heating kettle; 3 is hot-blast stove; 4 is heat exchanger; 5 is heat exchange kettle; 6 is a rotary kiln delayed heat air outlet slit; 7 is hot water or steam (vapor) outlet; 8 is gas vent; 9 is the solid product discharging opening
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described:
Equipment connection mode is: the hot-blast outlet of hot-blast stove 3 is connected with the hot blast import of rotary kiln 1 bottom with pipeline, the hot-blast outlet at rotary kiln 1 top is connected with the hot blast import of the bottom of No. two rotary kilns 2 with pipeline, and the discharging opening of No. two rotary kilns 2 is connected with pipeline with the charging aperture of a rotary kiln 1; The top of the discharging opening of a rotary kiln 1 is connected with the charging aperture of heat exchanger 4 with pipeline, the bottom of rotary kiln 1 discharging opening is connected with the charging aperture of heat exchange kettle 5 with pipeline, and the coolant outlet of heat exchanger 4 is connected with the cooling water inlet of heat exchange kettle 5 with pipeline.
1 ton of green vitriol is put into to rotary kiln 2 No. two, waste heat supply temperature by rotary kiln 1 generation is 400 ℃, material was 2 times rotary calcinings of No. two rotary kilns 30 minutes, the ferrous sulfate generated is transferred in rotary kiln 1, 820 ℃ of lower pyrolysis 45 minutes, decomposing the iron oxide produced is transferred in heat exchange kettle 5, water quench by coming from heat exchanger 4 is to room temperature, obtain 226Kg iron fine powder, the sulfur dioxide produced and sulfur trioxide desulfuration acid production workshop section, produce the sulfuric acid of 320Kg98%, by heat exchange kettle 5, superheated steam out goes to the hydrolysis workshop section of titanium white, heat energy as hydrolysis workshop section.
Equipment connection mode is: the hot-blast outlet of hot-blast stove 3 is connected with the hot blast import of rotary kiln 1 bottom with pipeline, the hot-blast outlet at rotary kiln 1 top is connected with the hot blast import of the bottom of heating kettle 2 with pipeline, under the discharging opening of the bottom of heating kettle 2, has pipeline to be connected with the charging aperture of a rotary kiln 1; The top of the discharging opening of a rotary kiln 1 is connected with the charging aperture of heat exchanger 4 with pipeline, the bottom of rotary kiln 1 discharging opening is connected with the charging aperture of heat exchange kettle 5 with pipeline, and the coolant outlet of heat exchanger 4 is connected with the cooling water inlet of heat exchange kettle 5 with pipeline.
Metatitanic acid (hydrated titanium dioxide) and chemical addition agent are put into to rotary kiln 2, waste heat supply temperature by rotary kiln 1 generation is 300 ℃, material makes dehydration and desulfurization in 40 minutes at 2 times rotary calcinings of No. two rotary kilns, the anatase titanium dioxide generated is transferred in rotary kiln 1, within 6 hours, make crystal transfer at 860 ℃ of lower rotary calcinings, the rutile titanium dioxide obtained is transferred in heat exchange kettle 5, water quench by coming from heat exchanger 4 is to room temperature, after grinding, Raymond mill obtains rutile type titanium white, by heat exchange kettle 5, superheated steam out goes to the hydrolysis workshop section of titanium white, heat energy as hydrolysis workshop section.Producing rutile type titanium white by apparatus of the present invention can make the temperature of crystal transfer reduce and reduce fringe time, the energy that the waste heat that calcination process by crystal transfer produces removes the crystallization water as hydrated titanium dioxide can take full advantage of Energy Consumption In A Typical, again because the raw material in the calcination process of crystal transfer dewaters, transformation to crystal formation is highly beneficial, make the crystal transfer rate high, the products obtained therefrom quality is good, has strengthened the competitiveness of enterprise.
Claims (1)
1. calcine and waste heat recovery apparatus for one kind, it is characterized in that: comprise a rotary kiln (1), No. two rotary kilns (2) or heating kettle (2), hot-blast stove (3), heat exchanger (4), heat exchange kettle (5); The hot-blast outlet of hot-blast stove (3) is connected with the hot blast import of a rotary kiln (1) bottom with pipeline, the hot-blast outlet at a rotary kiln (1) top is connected with the hot blast import of No. two rotary kilns (2) or heating kettle (2) bottom with pipeline, and the discharging opening of No. two rotary kilns (2) or heating kettle (2) is connected with pipeline with the charging aperture of a rotary kiln (1); The top of the discharging opening of a rotary kiln (1) is connected with the charging aperture of heat exchanger (4) with pipeline, the bottom of a rotary kiln (1) discharging opening is connected with the charging aperture of heat exchange kettle (5) with pipeline, and the coolant outlet of heat exchanger (4) is connected with the cooling water inlet of heat exchange kettle (5) with pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200663000U CN203336977U (en) | 2013-02-05 | 2013-02-05 | Calcinating and waste heat recovering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200663000U CN203336977U (en) | 2013-02-05 | 2013-02-05 | Calcinating and waste heat recovering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203336977U true CN203336977U (en) | 2013-12-11 |
Family
ID=49705647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200663000U Expired - Lifetime CN203336977U (en) | 2013-02-05 | 2013-02-05 | Calcinating and waste heat recovering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203336977U (en) |
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2013
- 2013-02-05 CN CN2013200663000U patent/CN203336977U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 543312 Meng Jiang Town, Wuzhou, the Guangxi Zhuang Autonomous Region, Tengxian Patentee after: GUANGXI YAZHAO TITANIUM WHITE CO.,LTD. Address before: 543312 Meng Jiang Town, Wuzhou, the Guangxi Zhuang Autonomous Region, Tengxian Patentee before: ALFA FULL (GUANGXI TENGXIAN) TITANIUM DIOXIDE Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20131211 |
|
| CX01 | Expiry of patent term |