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CN103175407A - Backflow suspension type calcining furnace system - Google Patents

Backflow suspension type calcining furnace system Download PDF

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CN103175407A
CN103175407A CN2011104515520A CN201110451552A CN103175407A CN 103175407 A CN103175407 A CN 103175407A CN 2011104515520 A CN2011104515520 A CN 2011104515520A CN 201110451552 A CN201110451552 A CN 201110451552A CN 103175407 A CN103175407 A CN 103175407A
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cyclone dust
dust collection
collection equipment
flue gas
suspension calciner
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CN103175407B (en
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陈威丞
柳万霞
黄钦铭
欧阳湘
徐恒文
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Industrial Technology Research Institute ITRI
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    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract

一种回流悬浮式煅烧炉系统，包括：具有复数个单元的旋风集尘设备，其中旋风集尘设备的顶部单元系用作一进料系统、一直立燃烧窑、一高温风车及一排料系统，进料系统中的粉体下落旋风集尘设备，上述粉体下落经过数个旋风集尘设备的单元与逆向的高温烟气混合热交换，产生煅烧反应并释出二氧化碳的烟气，且烟气经高温风车推动输送至进料系统，作为粉体的进料输送气体。

Figure 201110451552

A reflux suspended calcining furnace system, including: a cyclone dust collection equipment with multiple units, in which the top unit of the cyclone dust collection equipment is used as a feeding system, a vertical combustion kiln, a high-temperature windmill and a discharge system , the powder falling cyclone dust collection equipment in the feeding system. The above-mentioned powder falling passes through several units of the cyclone dust collection equipment and is mixed with the reverse high-temperature flue gas for heat exchange, resulting in a calcination reaction and the release of carbon dioxide flue gas, and the flue gas The gas is driven by a high-temperature windmill and transported to the feeding system, where it is used as a feed for powder.

Figure 201110451552

Description

Backflow suspending calcinator system
Technical field
The present invention relates to a kind of emission-control equipment, particularly relates to a kind of backflow suspending calcinator system.
Background technology
In recent years, the problems such as global environmental changes and power consumption are subject to national governments and green group's serious concerns.Because industry develops on a large scale, cause petroleum chemicals to be used in a large number, and approximately have 4/5ths in the supply structure of global energy from fossil fuel (fossil fuel), wherein, industry is maximum with the fossil fuel that energy industry uses, the CO of discharging 2Also maximum, if effectively catch or seal up for safekeeping the CO of discharging 2Can significantly reduce Carbon Dioxide in Air content.
Cement sectors are also the large of CO2 emission, but air burning and airtight not good, even system's calcining produces carbon dioxide, the flue gas gas concentration lwevel of discharging still only has 25-30vol%, still needing capture technique to improve concentration just has recycling and seals benefit up for safekeeping, in addition, cement sectors are one of six large power consumption industries, processing procedure adopts air burning not insulation mostly again, the too much source benefit of heat waste is low, unique method of raising the efficiency is to reclaim by cogeneration, but cost of investment and space, required place are large.In addition, conventional art fails to grasp the precipitated calcium carbonate business opportunity.
Summary of the invention
According to above-mentioned, the object of the present invention is to provide and a kind ofly can improve catching of carbon dioxide, and adsorbent is constantly recycled, reduce reaction time and fuel saving, reduce the backflow suspending calcinator system of carbon dioxide capture cost.
The invention provides a kind of backflow suspending calcinator system, comprise: the cyclone dust-collecting apparatus of a plurality of unit, wherein the top unit of cyclone dust-collecting apparatus is as a feed system, upright burning kiln, a high temperature windmill and a discharge system, powder whereabouts cyclone dust-collecting apparatus in feed system, above-mentioned powder whereabouts is through the unit of a plurality of cyclone dust-collecting apparatus and reverse high-temperature flue gas heat of mixing exchange, produce calcination reaction and disengage the flue gas of carbon dioxide, and flue gas promotes to be delivered to feed system through the high temperature windmill, carries gas as the charging of powder.
Backflow suspending calcinator of the present invention system has the following advantages: the first, can make the favourable geological storage of high concentration carbon dioxide and industry recycling; The second, promote energy efficiency, allow and disengage high-temperature reaction heat lower than the flue gas of the temperature of calcining reduction by heat cycles again, last recycled offgas also can be used as the metal carbonated that pneumatic transmission gas is carried charging; The 3rd, the metal oxide after system is calcined can be used as adsorbent or the raw material of industry uses; The 4th, the calcium oxide of making in flow process of the present invention (CaO) helps to produce a large amount of precipitated calcium carbonates, and precipitated calcium carbonate has sizable range of application in industry, have quite high economic benefit.
For feature of the present invention can be become apparent, embodiment cited below particularly, and coordinate appended accompanying drawing, be described in detail below:
Description of drawings
Fig. 1 shows the schematic diagram of the backflow suspending calcinator system of one embodiment of the invention;
Wherein, main element symbol description:
102～feed system; 104～cyclone dust-collecting apparatus;
106～uprightly kilns that burn; 108～high temperature windmill;
110～discharge system.
The specific embodiment
Below discuss the enforcement embodiments of the invention in detail.The specific embodiment of discussing only is used for disclosing the ad hoc approach that uses embodiment, and is not used for limiting the category of announcement.
The present invention is the calciner that discloses relevant for carbon dioxide capture systems, at high temperature catch the carbon dioxide in for example power plant's exhaust, improve catching of carbon dioxide, and adsorbent is constantly recycled, reduce reaction time and fuel saving, reduce the carbon dioxide capture cost.The present invention utilizes " the backflow suspending calcinator " of tool time and fuel efficiency to carry out absorbent calcining, for example calcination of calcium carbonate (CaCO under saving the energy and reducing costs 3) obtain calcium oxide (CaO), use and make precipitated calcium carbonate or utilize it to carry out catching of carbon dioxide.
Fig. 1 shows the schematic diagram of the backflow suspending calcinator system of one embodiment of the invention, please refer to Fig. 1, the present embodiment backflow suspending calcinator system comprises: the cyclone dust-collecting apparatus 104 of a plurality of unit (for example, comprise 3～7 unit), upright burning kiln 106, high temperature windmill 108 and discharge system 110, wherein the top unit of this cyclone dust-collecting apparatus 104 is as feed system 102, the unit bottom of cyclone dust-collecting apparatus 104 is joined with rotary valve (rotary valve) or method blue (flange) and remaining cyclone dust-collecting apparatus unit, and separate equipment pressure each other.Wherein said high temperature windmill and described cyclone dust-collecting apparatus are as the pneumatic transmission system of this backflow suspending calcinator system.The running of feed system 102 is to utilize high temperature windmill 108 to promote the approximately high concentration carbon dioxide of 600～1000 ℃ of cyclone dust-collecting apparatus 104 outlets, will carry out the calcium carbonate (CaCO of calcination procedure with this high concentration carbon dioxide as the charging conveying gas of powder 3) the powder pneumatic transmission is to feed system 102 (top unit of cyclone dust-collecting apparatus), calcium carbonate powder and high concentration carbon dioxide flue gas in cyclone dust-collecting apparatus 104 after gas solid separation, calcium carbonate (CaCO 3) be subject to gravity to the unit that falls through a plurality of cyclone dust-collecting apparatus 104, with hot blast (being high-temperature flue gas) interleaved fly-back from bottom to top, after sufficient heat exchange, calcium carbonate powder absorbs calcination reaction heat and completes calcination reaction and form calcium oxide (CaO), disengages carbon dioxide.Carbon dioxide mixes last cyclone dust-collecting apparatus unit outlet by the top and disengages with the high-temperature gas of progressively cooling, promoted by high temperature windmill 108, and partial discharge is prepared to seal up for safekeeping or the carbon dioxide recycling, whole system pressure and quality is kept stable; Part is as pneumatic transmission gas, and after the pneumatic transmission gas solid separation is complete, add appropriate high-purity oxygen (for example greater than 93% pure oxygen), combustion air as upright burning kiln 106, being heated to 900-1200 ℃ together with fuel carries out pure oxygen burning and disengages the flue gas that comprises carbon dioxide of 600～1000 ℃, gas after this pure oxygen burning enters the base unit of cyclone dust-collecting apparatus 104, to improve the concentration of carbon dioxide, and tool suppresses the function of pure oxygen burning high temperature, avoid powder sintering and device damage, the follow-up discharge system 110 that enters of powder.The number of capacity of returns is the key that this equipment is controlled flue-gas temperature, and flue gas flows and the powder sufficient heat exchange from lower to upper, provides the calcining powder required calcining energy, and wherein hot smoke components is take carbon dioxide and water vapour as main.The calcining powder can use the absorbent of metal carbonated, and it can be CaCO 3, ZeCO 3, MgCO 3, MnCO 3Or NiCO 3Deng.If its carbon dioxide recycling will directly be sealed or make to hot flue gas up for safekeeping, direct Separation of Water and obtain the carbon dioxide of high concentration after the cooling condensation.The part of upright burning kiln can be done reinforcement for the part of carbon elimination acidifying deficiency, elongates burning kiln 106 and highly extends the powder holdup time, and the calcination reaction rate is maintained more than 90%.
According to above-mentioned, the present invention " backflow suspending calcinator system " utilizes pure oxygen burning (oxy-combustion) concept, completes CO at the calcining furnace burner 2-O 2Burning.Calcining (calcine) metal carbonated utilizes tail gas (the Flue gas recirculation) mode that refluxes to control entrance flue gas temperature at 900-1200 ℃, progressively increases the inner flue gas gas concentration lwevel of calcining furnace.Reflux suspending calcinator system of the present invention has the following advantages: the first, can make the favourable geological storage of high concentration carbon dioxide and industry recycling; The second, promote energy efficiency, allow and disengage high-temperature reaction heat lower than the flue gas of the temperature of calcining reduction by heat cycles again, last recycled offgas also can be used as the metal carbonated that pneumatic transmission gas is carried charging; The 3rd, the metal oxide after system is calcined can be used as adsorbent or the raw material of industry uses; The 4th, the calcium oxide of making in flow process of the present invention (CaO) helps to produce a large amount of precipitated calcium carbonates, and precipitated calcium carbonate has sizable range of application in industry, have quite high economic benefit.
Although the present invention with the preferred embodiment invention as above; so it is not to limit the present invention; anyly have the knack of this skill person; without departing from the spirit and scope of the present invention; when can do a little change and retouching, so protection scope of the present invention is as the criterion when looking accompanying the scope that claims define.

Claims (15)

1.一种回流悬浮式煅烧炉系统，包括：1. A reflux suspension type calciner system, comprising: 多个单元的旋风集尘设备，其中所述旋风集尘设备的顶部单元是用作一进料系统、一直立燃烧窑、一高温风车及一排料系统，所述进料系统中的粉体下落所述旋风集尘设备，上述粉体下落经过多个旋风集尘设备的单元与逆向的高温烟气混合热交换，产生煅烧反应并释出二氧化碳的烟气，且所述烟气经所述高温风车推动输送至所述进料系统，作为所述粉体的进料输送气体。Cyclone dust collection equipment with multiple units, wherein the top unit of the cyclone dust collection equipment is used as a feed system, a vertical combustion kiln, a high temperature windmill and a discharge system, the powder in the feed system Falling the cyclone dust collection equipment, the above-mentioned powder falls through multiple units of the cyclone dust collection equipment, mixes and exchanges heat with the reverse high-temperature flue gas, generates calcination reaction and releases flue gas of carbon dioxide, and the flue gas passes through the The high-temperature windmill pushes and transports to the feeding system as the feeding gas for the powder. 2.如权利要求1所述的回流悬浮式煅烧炉系统，其中部分输送至进料系统的烟气是于所述直立燃烧窑中进行纯氧燃烧。2. The reflux suspension calciner system as claimed in claim 1, wherein part of the flue gas delivered to the feed system is burnt with pure oxygen in the vertical combustion kiln. 3.如权利要求2所述的回流悬浮式煅烧炉系统，其中所述纯氧燃烧后的气体是进入所述旋风集尘设备的底部单元。3. The reflux suspension calciner system as claimed in claim 2, wherein the gas after combustion of the pure oxygen enters the bottom unit of the cyclone dust collection equipment. 4.如权利要求3所述的回流悬浮式煅烧炉系统，其中所述纯氧燃烧后的气体进入所述旋风集尘设备的底部单元是用以提高二氧化碳的浓度和抑制纯氧燃烧的高温。4. The reflux suspension calciner system as claimed in claim 3, wherein the gas after the pure oxygen combustion enters the bottom unit of the cyclone dust collection device is to increase the concentration of carbon dioxide and suppress the high temperature of the pure oxygen combustion. 5.如权利要求2所述的回流悬浮式煅烧炉系统，其中所述纯氧燃烧是加入纯氧和燃料。5. The reflux suspension calciner system as claimed in claim 2, wherein said pure oxygen combustion is adding pure oxygen and fuel. 6.如权利要求2所述的回流悬浮式煅烧炉系统，其中所述纯氧燃烧的温度为900-1200℃。6. The reflux suspension calciner system according to claim 2, wherein the temperature of the pure oxygen combustion is 900-1200°C. 7.如权利要求1所述的回流悬浮式煅烧炉系统，其中所述粉体为碳酸钙。7. The reflux suspension calciner system of claim 1, wherein the powder is calcium carbonate. 8.如权利要求1所述的回流悬浮式煅烧炉系统，其中所述粉体经煅烧反应形成氧化钙。8. The reflux suspension calciner system as claimed in claim 1, wherein the powder is calcined to form calcium oxide. 9.如权利要求1所述的回流悬浮式煅烧炉系统，其中所述煅烧反应释出包含二氧化碳的烟气的温度为600～1000℃。9. The reflux suspension calciner system according to claim 1, wherein the temperature at which the flue gas containing carbon dioxide is released from the calcination reaction is 600-1000°C. 10.如权利要求1所述的回流悬浮式煅烧炉系统，其中所述回流悬浮式煅烧炉系统的气送系统包括所述高温风车和所述旋风集尘设备。10. The reflux suspension calciner system according to claim 1, wherein the air delivery system of the reflux suspension calciner system comprises the high temperature windmill and the cyclone dust collection equipment. 11.如权利要求1所述的回流悬浮式煅烧炉系统，其中所述旋风集尘设备包括3～7个单元。11. The reflux suspension calciner system as claimed in claim 1, wherein the cyclone dust collection equipment comprises 3-7 units. 12.如权利要求1所述的回流悬浮式煅烧炉系统，其中所述旋风集尘设备的单元底部以旋转阀或法蓝与其余的旋风集尘设备单元相接。12. The reflux suspension calciner system according to claim 1, wherein the bottom of the unit of the cyclone dust collection equipment is connected with the rest of the cyclone dust collection equipment units through a rotary valve or flange. 13.如权利要求1所述的回流悬浮式煅烧炉系统，其中所述释出烟气中的二氧化碳是要进行封存或二氧化碳再利用。13. The reflux suspension calciner system according to claim 1, wherein the carbon dioxide in the released flue gas is to be stored or reused. 14.如权利要求1所述的回流悬浮式煅烧炉系统，其中所述煅烧反应是使用金属碳酸化物的吸收剂。14. The reflux suspension calciner system of claim 1, wherein the calcination reaction is using a metal carbonate absorbent. 15.如权利要求14所述的回流悬浮式煅烧炉系统，其中所述金属碳酸化物为CaCO3、ZeCO3、MgCO3、MnCO3或NiCO3。15. The refluxing suspension calciner system of claim 14, wherein the metal carbonate is CaCO3 , ZeCO3 , MgCO3 , MnCO3 or NiCO3 .
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104707471A (en) * 2013-12-11 2015-06-17 财团法人工业技术研究院 Carbon dioxide capture system and method for circulating tower
CN105318710A (en) * 2014-06-24 2016-02-10 阿尔斯通技术有限公司 Calciner and method for calcination of a carbon dioxide rich sorbent
CN105347704A (en) * 2015-12-03 2016-02-24 洛阳建材建筑设计研究院有限公司 Production method of oil shale tailings particle suspension limekiln
CN106233070A (en) * 2014-02-19 2016-12-14 西门子公司 For the method and apparatus separating waste gas when special metal burns

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101423339A (en) * 2008-11-14 2009-05-06 太原理工大学 Method for preparing magnesium calcined dolomite by microwave fluidized bed roaster controlled by microcomputer
WO2010012880A1 (en) * 2008-08-01 2010-02-04 Fives Fcb Process for manufacturing cement clinker in a plant, and cement clinker manufacturing plant as such
CN102112833A (en) * 2008-08-01 2011-06-29 菲弗斯有限公司 Process for manufacturing cement clinker in plant, and cement clinker manufacturing plant as such

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010012880A1 (en) * 2008-08-01 2010-02-04 Fives Fcb Process for manufacturing cement clinker in a plant, and cement clinker manufacturing plant as such
CN102112833A (en) * 2008-08-01 2011-06-29 菲弗斯有限公司 Process for manufacturing cement clinker in plant, and cement clinker manufacturing plant as such
CN101423339A (en) * 2008-11-14 2009-05-06 太原理工大学 Method for preparing magnesium calcined dolomite by microwave fluidized bed roaster controlled by microcomputer

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104707471A (en) * 2013-12-11 2015-06-17 财团法人工业技术研究院 Carbon dioxide capture system and method for circulating tower
CN104707471B (en) * 2013-12-11 2017-01-04 财团法人工业技术研究院 Carbon dioxide capture system and method for circulating tower
US9610537B2 (en) 2013-12-11 2017-04-04 Industrial Technology Research Institute Loop tower CO2 capture system, carbonator, calciner and operating method thereof
CN106233070A (en) * 2014-02-19 2016-12-14 西门子公司 For the method and apparatus separating waste gas when special metal burns
CN105318710A (en) * 2014-06-24 2016-02-10 阿尔斯通技术有限公司 Calciner and method for calcination of a carbon dioxide rich sorbent
CN105347704A (en) * 2015-12-03 2016-02-24 洛阳建材建筑设计研究院有限公司 Production method of oil shale tailings particle suspension limekiln
CN105347704B (en) * 2015-12-03 2017-10-27 洛阳建材建筑设计研究院有限公司 A kind of production method of oil shale tailing particles suspension lime kiln

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