CN110451822A - A kind of product gas Cyclic Calcination lime stone and Resources of Carbon Dioxide recovery process - Google Patents
A kind of product gas Cyclic Calcination lime stone and Resources of Carbon Dioxide recovery process Download PDFInfo
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- CN110451822A CN110451822A CN201910753081.5A CN201910753081A CN110451822A CN 110451822 A CN110451822 A CN 110451822A CN 201910753081 A CN201910753081 A CN 201910753081A CN 110451822 A CN110451822 A CN 110451822A
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- lime
- shaft furnace
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- calcining
- lime stone
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
- C04B2/12—Preheating, burning calcining or cooling in shaft or vertical furnaces
Abstract
The present invention provides a kind of product gas Cyclic Calcination lime stone and Resources of Carbon Dioxide recovery process, belongs to industrial energy saving technical field of emission reduction.The CO that lime calcining shaft furnace discharges in the technique2Shaft furnace lower part cooling section is passed first into after purification, is tentatively heated using high-temperature lime product waste heat, is then heated to 1200 DEG C by recuperative heater；High temperature CO after heating2It is passed through in the middle part of shaft furnace as heat carrier and calcines section, be the heat supply of limestone calcination process；CO after the completion of calcining, as heat carrier2With the new CO for decomposing and generating2Enter shaft furnace top preheating section together, unreacted lime stone is preheated；It is then discharged from preheating section top-side, is recycled next time.The technique is ingenious, strong operability, is suitable for all kinds of limestone calcination processes, solves lime manufacturing process CO2The problems such as discharge is serious, burning quality is poor, and realize decomposition of limestone process CO2Full resource utilization.
Description
Technical field
The present invention relates to industrial energy saving technical field of emission reduction, a kind of product gas Cyclic Calcination lime stone and dioxy are particularly related to
Change carbon resource recovery process.
Background technique
Lime is a kind of important industrial chemicals, is also widely used in ironmaking (sintering process), wet desulphurization, production of construction materials
Equal industrial process.Currently, the annual lime production amount in China is more than 200,000,000 tons, account for about the 70% of global lime total output.Due to lacking
Effective carbon dioxide discharge-reduction technology, the CO2 emissions of China's lime industry are about 2.4 hundred million tons, become and are only second to water
Second Large-scale industrial process CO2 emission source of bricklayer's's industry, causes serious environmental problem.The carbon emission of lime manufacturing process
The carbon dioxide and electricity consumption that the main carbon dioxide generated including decomposition of limestone in technical process, fuel combustion generate are set
It is standby to wait caused indirect CO2 emission.Wherein, the carbon row of decomposition of limestone process (decomposition reaction equation is as shown in Equation 1)
It puts as principal element, about the 69% of the discharge of lime production total CO 2.
CaCO3(s)=CaO (s)+CO2(g)(1)
In addition, conventional lime kiln is usually using industrial fuels such as coal gas as the energy, it is direct with material by fuel combustion flames
The mode of contact is calcined, and since flame combustion has certain uncontrollability, material is caused to be easy to appear local burning, owe
Situations such as burning；Simultaneously as there is a large amount of impurity in the flue gas of fuel combustion, impurity reacts with material at high temperature, so that
Product impurity content is higher, and quality is lower.
Therefore, it to reduce CO2 emission in lime manufacturing process, promoting lime calcining quality, needs to develop a kind of high
It imitates, the calcining new process of low row, realizes carbon dioxide discharge-reduction and resource utilization.
Summary of the invention
The problems such as present invention is high, limestone calcination is of poor quality for lime manufacturing process carbon emission amount, provides a kind of product
Gas Cyclic Calcination lime stone and Resources of Carbon Dioxide recovery process.Technology utilization lime stone (calcium carbonate) decomposable process generates
CO2As heat carrier, the efficient calcination system based on the airborne thermal cycle of product is constructed, realizes decomposition of limestone process CO2Product
The full resource utilization of gas, so that the carbon emission of lime manufacturing process be greatly reduced.
The specific process cycles of the technique are as follows:
The CO of lime calcining shaft furnace discharge2Lime calcining shaft furnace lower part cooling section is passed first into after purification, utilizes high fire stons
Ash products waste heat is tentatively heated, then by recuperative heater further by CO2It is heated to 1200 DEG C or more；After heating
High temperature CO2It is passed through in the middle part of lime calcining shaft furnace as heat carrier and calcines section, pass through gas-solid counterflow heat exchange heating lime stone mine
Material is the heat supply of limestone calcination process；CO after the completion of calcining, as heat carrier2With the new CO for decomposing and generating2Enter stone together
Grey calcining vertical kiln top preheating section, preheats unreacted lime stone；Then CO2It is discharged from preheating section top-side, into
Row recycles next time.
Device involved in the technique includes lime calcining shaft furnace, purification device, part flow arrangement, blower and heat accumulating type heating
Furnace, lime calcining shaft furnace are divided into preheating section, calcining section and cooling section from top to bottom, calcine section with cooling section and connect storage by pipeline
Hot type heating furnace, preheating section top are lime stone entrance, and preheating section top-side passes through pipeline and connects purification device, purification device
It is followed by part flow arrangement, blower is set on the pipeline of part flow arrangement connection cooling section.
Wherein, recuperative heater is arranged outside lime calcining shaft furnace, avoid combustion flame and lime stone mineral aggregate with
And the direct contact of lime product, it solves the problems such as mineral aggregate part " burning " and " underburnt ", eliminates combustion product gases to lime
The pollution of product.
In cyclic process, product gas CO2Constantly enrichment, concentration and total amount gradually rise.When meeting Cyclic Calcination mistake
The CO of journey2After demand, part flow arrangement is by superfluous CO2It is passed through gas storage holder and carries out resource utilization.
In the airborne thermal cycle calcination system of product, lime stone (calcium carbonate) decomposition reaction is in high concentration CO2In atmosphere into
Row, to overcome high CO2Concentration to the inhibiting effect of the decomposition reaction, heat carrier enter limekiln temperature should 1200 DEG C with
On, to meet lime production demand.
The advantageous effects of the above technical solutions of the present invention are as follows:
In above scheme, the technological principle is ingenious, easy to operate, on the one hand, the CO generated using calcining and decomposing process2Building
Cyclic Calcination system, makes CO2It is constantly enriched in cyclic process, and finally realizes resource utilization, lime production can be substantially reduced
66% or more the carbon emission of process；On the other hand, it is burnt outside furnace fuel and avoids fuel combustion flames by way of heat production
It is directly contacted with lime stone mineral aggregate, solves the problems such as mineral aggregate part " burning " and " underburnt ", and eliminate miscellaneous in combustion product gases
Adverse effect of the matter ingredient to lime product.
Detailed description of the invention
Fig. 1 is product gas Cyclic Calcination lime stone and Resources of Carbon Dioxide recovery process flow chart of the invention.
Wherein: 1- lime calcining shaft furnace；2- purification device；3- part flow arrangement；4- blower；5- recuperative heater.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
The present invention is directed to lime manufacturing process CO2The problems such as discharge is serious, limestone calcination is of poor quality, provides a kind of product
Gas Cyclic Calcination lime stone and Resources of Carbon Dioxide recovery process.
As shown in Figure 1, device involved in the technique includes lime calcining shaft furnace 1, purification device 2, part flow arrangement 3, wind
Machine 4 and recuperative heater 5, lime calcining shaft furnace 1 are divided into preheating section, calcining section and cooling section from top to bottom, calcine section and cold
But section connects recuperative heater 5 by pipeline, is lime stone entrance above preheating section, and preheating section top-side is connected by pipeline
Purification device 2 is connect, purification device 2 is followed by part flow arrangement 3, and part flow arrangement 3, which connects, is arranged blower 4 on the pipeline of cooling section.
In the process of running, the CO of lime calcining shaft furnace discharge2It is cooling that lime calcining shaft furnace lower part is passed first into after purification
Section, is tentatively heated using high-temperature lime product waste heat, then by recuperative heater further by CO2It is heated to 1200
DEG C or more；High temperature CO after heating2It is passed through in the middle part of lime calcining shaft furnace as heat carrier and calcines section, supplied for limestone calcination process
Heat；CO after the completion of calcining, as heat carrier2With the new CO for decomposing and generating2Enter lime calcining shaft furnace top preheating section together,
Unreacted lime stone is preheated；Then CO2It is discharged from preheating section top-side, is recycled next time.
In practical applications, lime stone enters at the top of lime calcining shaft furnace, slowly mobile from top to bottom, calcines generation
Lime product is exported from kiln bottom portion.High temperature CO2Calcining section enters in the middle part of lime calcining shaft furnace, flows from bottom to top, with lime
Stone carries out counterflow heat exchange.
According to process characteristic, lime calcining shaft furnace is divided into preheating section (top), calcining section (middle part) and cooling section (lower part).
In calcining section, lime stone is by high temperature CO2Reaction temperature is heated to decompose reaction；After the reaction was completed, as the CO of heat carrier2
Temperature reduces, with the new CO for decomposing and generating2Enter preheating section together to preheat unreacted lime stone, and then from preheating
The discharge of section top.
The CO in limekiln is discharged2Enter gas diverter after purified device dust separation.It is required according to actual process,
Most of CO2Circulation heat-carrying, additional CO are carried out under the action of blower2Then carry out resource utilization.
CO as heat carrier2It is passed into the cooling section of limekiln lower part first, utilizes the waste heat pair of high-temperature lime product
CO2Tentatively heated；Then by part CO2It is passed through recuperative heater and is further heated to 1200 DEG C or more.
High temperature CO2Calcining section is fed in the middle part of lime calcining shaft furnace, provides heat for limestone calcination, and then preheated section
It is discharged from furnace roof side, is recycled next time.CO in cyclic process2Constantly enrichment, concentration and total amount are all gradually promoted.Stablize
, it can be achieved that all CO generated by decomposition of limestone after operation2Resource utilization.
Fuel burns in the recuperative heater being located at outside lime calcining shaft furnace, avoids fuel combustion flames and lime
The direct contact of stone ore material solves the problems such as mineral aggregate part " burning " and " underburnt ", and eliminates combustion product gases and produce to lime
The pollution of product is conducive to improve calcining effect and product quality.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (4)
1. a kind of product gas Cyclic Calcination lime stone and Resources of Carbon Dioxide recovery process, it is characterised in that: process cycles are such as
Under:
The CO of lime calcining shaft furnace discharge2Lime calcining shaft furnace lower part cooling section is passed first into after purification, utilizes high-temperature lime product
Waste heat is tentatively heated, then by recuperative heater further by CO2It is heated to 1200 DEG C or more；High temperature after heating
CO2It is passed through in the middle part of lime calcining shaft furnace as heat carrier and calcines section, be the heat supply of limestone calcination process；After the completion of calcining, as
The CO of heat carrier2With the new CO for decomposing and generating2Together enter lime calcining shaft furnace top preheating section, to unreacted lime stone into
Row preheating；Then CO2It is discharged from preheating section top-side, is recycled next time.
2. product gas Cyclic Calcination lime stone according to claim 1 and Resources of Carbon Dioxide recovery process, feature
Be: device involved in the technique include lime calcining shaft furnace (1), purification device (2), part flow arrangement (3), blower (4) and
Recuperative heater (5), lime calcining shaft furnace (1) are divided into preheating section, calcining section and cooling section from top to bottom, calcine section and cooling
Section connects recuperative heater (5) by pipeline, is lime stone entrance above preheating section, and preheating section top-side is connected by pipeline
It connects purification device (2), purification device (2) is followed by part flow arrangement (3), and wind is arranged on the pipeline of part flow arrangement (3) connection cooling section
Machine (4).
3. product gas Cyclic Calcination lime stone according to claim 2 and Resources of Carbon Dioxide recovery process, feature
Be: recuperative heater (5) setting is external in lime calcining shaft furnace (1).
4. product gas Cyclic Calcination lime stone according to claim 2 and Resources of Carbon Dioxide recovery process, feature
Be: the part flow arrangement (3) is by superfluous CO2It is passed through gas storage holder and carries out resource utilization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910753081.5A CN110451822B (en) | 2019-08-15 | 2019-08-15 | Recycling process for circularly calcining limestone and carbon dioxide by product gas |
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|---|---|---|---|
| CN201910753081.5A CN110451822B (en) | 2019-08-15 | 2019-08-15 | Recycling process for circularly calcining limestone and carbon dioxide by product gas |
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| CN110451822A true CN110451822A (en) | 2019-11-15 |
| CN110451822B CN110451822B (en) | 2020-12-08 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110836605A (en) * | 2019-11-21 | 2020-02-25 | 江苏新达石英有限公司 | Calcining device for quartz sand purification and using method thereof |
| CN111170660A (en) * | 2020-01-10 | 2020-05-19 | 北京科技大学 | Lime production system and method |
| CN111763019A (en) * | 2020-07-27 | 2020-10-13 | 北京科技大学 | Carbon capture lime calcining system and application method |
| CN111960696A (en) * | 2020-06-29 | 2020-11-20 | 福建省气柜设备安装有限公司 | Lime kiln for directly burning high-temperature coal gas hot delivery of gasification furnace |
| CN112479606A (en) * | 2020-12-10 | 2021-03-12 | 石家庄新华能源环保科技股份有限公司 | Suspension kiln for producing lime |
| CN112916213A (en) * | 2021-02-09 | 2021-06-08 | 矿冶科技集团有限公司 | Carbon-neutralized mineral processing method |
| CN113072310A (en) * | 2021-03-30 | 2021-07-06 | 北京卡卢金热风炉技术有限公司 | Lime kiln and lime preparation method |
| CN115893875A (en) * | 2023-01-29 | 2023-04-04 | 新疆八一钢铁股份有限公司 | Shaft furnace lime kiln for reducing CO 2 Method of discharging |
| CN116496007A (en) * | 2023-05-16 | 2023-07-28 | 中冶长天国际工程有限责任公司 | Process method for decomposing lime by microwaves |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182142A (en) * | 2007-12-03 | 2008-05-21 | 天津水泥工业设计研究院有限公司 | Method for calcining cement by carbide slag replacing whole limestone |
| CN101539037A (en) * | 2009-04-03 | 2009-09-23 | 东南大学 | Method for catching carbon dioxide by pressurized fluidized bed combustion combined recycle generating system |
| US20130213280A9 (en) * | 2005-04-18 | 2013-08-22 | Klaus S. Lackner | Methods and systems for reducing carbon dioxide emissions |
| CN103979806A (en) * | 2014-05-13 | 2014-08-13 | 石家庄共创环保科技有限公司 | Carbon dioxide recovery chamber type lime shaft furnace |
| CN104016596A (en) * | 2014-05-27 | 2014-09-03 | 石家庄新华能源环保科技股份有限公司 | Rotary kiln with power generation device |
| CN108314336A (en) * | 2018-05-09 | 2018-07-24 | 王长春 | A kind of lime kiln device using circulating air |
-
2019
- 2019-08-15 CN CN201910753081.5A patent/CN110451822B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130213280A9 (en) * | 2005-04-18 | 2013-08-22 | Klaus S. Lackner | Methods and systems for reducing carbon dioxide emissions |
| CN101182142A (en) * | 2007-12-03 | 2008-05-21 | 天津水泥工业设计研究院有限公司 | Method for calcining cement by carbide slag replacing whole limestone |
| CN101539037A (en) * | 2009-04-03 | 2009-09-23 | 东南大学 | Method for catching carbon dioxide by pressurized fluidized bed combustion combined recycle generating system |
| CN103979806A (en) * | 2014-05-13 | 2014-08-13 | 石家庄共创环保科技有限公司 | Carbon dioxide recovery chamber type lime shaft furnace |
| CN104016596A (en) * | 2014-05-27 | 2014-09-03 | 石家庄新华能源环保科技股份有限公司 | Rotary kiln with power generation device |
| CN108314336A (en) * | 2018-05-09 | 2018-07-24 | 王长春 | A kind of lime kiln device using circulating air |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110836605A (en) * | 2019-11-21 | 2020-02-25 | 江苏新达石英有限公司 | Calcining device for quartz sand purification and using method thereof |
| CN111170660A (en) * | 2020-01-10 | 2020-05-19 | 北京科技大学 | Lime production system and method |
| CN111960696A (en) * | 2020-06-29 | 2020-11-20 | 福建省气柜设备安装有限公司 | Lime kiln for directly burning high-temperature coal gas hot delivery of gasification furnace |
| CN111960696B (en) * | 2020-06-29 | 2022-04-05 | 中琉科技有限公司 | Lime kiln for directly burning high-temperature coal gas hot delivery of gasification furnace |
| CN111763019A (en) * | 2020-07-27 | 2020-10-13 | 北京科技大学 | Carbon capture lime calcining system and application method |
| CN112479606A (en) * | 2020-12-10 | 2021-03-12 | 石家庄新华能源环保科技股份有限公司 | Suspension kiln for producing lime |
| CN112916213A (en) * | 2021-02-09 | 2021-06-08 | 矿冶科技集团有限公司 | Carbon-neutralized mineral processing method |
| CN113072310A (en) * | 2021-03-30 | 2021-07-06 | 北京卡卢金热风炉技术有限公司 | Lime kiln and lime preparation method |
| CN115893875A (en) * | 2023-01-29 | 2023-04-04 | 新疆八一钢铁股份有限公司 | Shaft furnace lime kiln for reducing CO 2 Method of discharging |
| CN115893875B (en) * | 2023-01-29 | 2024-01-12 | 新疆八一钢铁股份有限公司 | Shaft furnace lime kiln CO reduction 2 Method of venting |
| CN116496007A (en) * | 2023-05-16 | 2023-07-28 | 中冶长天国际工程有限责任公司 | Process method for decomposing lime by microwaves |
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