CN103387347B - Method and device for producing active lime powder from calcined limestone - Google Patents
Method and device for producing active lime powder from calcined limestone Download PDFInfo
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- CN103387347B CN103387347B CN201310329586.1A CN201310329586A CN103387347B CN 103387347 B CN103387347 B CN 103387347B CN 201310329586 A CN201310329586 A CN 201310329586A CN 103387347 B CN103387347 B CN 103387347B
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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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
Abstract
The invention discloses a method for producing active lime powder from calcined limestone. The method comprises the following steps: (1) by taking limestone as a raw material, crushing and grinding the limestone to obtain limestone powder; (2) preheating the limestone powder by a suspension preheating system, and heating the limestone powder after preheating by a combustion decomposition furnace, so that the limestone powder is subjected to further heat absorption and decomposition; and (3) cooling the material subjected to heat decomposition in the step (2) to obtain the active lime powder through a suspension cooling system. The invention discloses a device for employing the method. The preheated limestone powder can be fed from the lower and middle parts of the combustion decomposition furnace, the temperature of the combustion decomposition furnace can be flexibly regulated, and the generated lime powder has high activity; caloric content in primary cyclone waste gas in the suspension preheating system and temperature rise air in the suspension cooling system is fully utilized, and the aim of saving energy in the system is fulfilled; moreover, the degree of automation is high, the production efficiency is high, and the production scale is conveniently enlarged.
Description
Technical field
The present invention relates to the method and apparatus that a kind of calcined limestone produces lime powder, especially a kind of method and apparatus utilizing the precalcining system calcined limestone producing cement to produce lime powder.
Background technology
Lime (i.e. unslaked lime) has a wide range of applications in the field such as metallurgy, building, chemical industry, environment, agricultural, and the production process of lime is in fact calcium carbonate (CaCO
3) process of decomposes.
Technique mainly rotary kiln and the shaft furnace of quickened lime is produced in the Wingdale calcination of current China.Rotary kiln configures shaft preheater and shaft cooler mostly, and it is calcined, and the quickened lime quality obtained is good, activity degree is high, output is high and administration measure, can utilize 10 ~ 40mm fine fraction Wingdale.Wingdale is preheating to 800 ~ 900 DEG C by shaft preheater, and rate of decomposition reaches 20 ~ 25%, and the decomposition of 75 ~ 80% Wingdales enters 1200 ~ 1350 DEG C, rotary kiln inherence and completes.The radiation heat transfer that in rotary kiln, mainly thermo-efficiency is not high, the surface radiating of cylinder of rotary kiln is excessive, causes system energy consumption to increase.
The quickened lime that external introduction shaft furnace is produced has that high, the raw burning rate of activity degree is low, the advantage of uniform composition, but there is high, the complicated operation of investment simultaneously, not easy-maintaining or the high shortcoming of maintenance cost.The quickened lime activity degree that domestic shaft furnace is calcined out is relatively low, and the Wingdale that needs use is mostly the bulk at more than 40mm, and mine utilization ratio is low.
Summary of the invention
The present invention provides a kind of method and apparatus utilizing the precalcining system calcined limestone producing cement to produce lime powder for solving in known technology the technical problem that exists.
The technical scheme that the present invention takes for the technical problem existed in solution known technology is: a kind of calcined limestone produces the method for active lime powder, comprises the following steps:
One) take Wingdale as raw material, after broken, grinding obtains limestone powder;
Two) adopt suspension preheating system to carry out preheating to limestone powder, and adopt combustion decomposition stove to carry out heating to limestone powder after preheat to make its further thermal endothermic decomposition;
Three) by through step 2) material after thermolysis obtains active lime powder through the cooling of suspension cooling system.
The fuel that described combustion decomposition stove adopts is any one in coal, Sweet natural gas, fuel oil and refinery coke.
Another technical scheme that the present invention takes for the technical problem existed in solution known technology is: adopt the calcined limestone of aforesaid method to produce the device of active lime powder, comprise the feeding unit set gradually, mulitistage cyclone, combustion decomposition stove and multistage cyclone water cooler, the top of described combustion decomposition stove is provided with band material air stream outlet, bottom is provided with air flow inlet, middle part and bottom are provided with material inlet, combustion decomposition furnace gas influx is connected with the air outlet of the one cyclonic cylinder of described multistage cyclone water cooler, combustion decomposition furnace zone material air stream outlet is connected with the import airduct of the final stage cyclone cylinder of described mulitistage cyclone, combustion decomposition stove material inlet is connected with the feed opening of the penultimate stage cyclone cylinder of described mulitistage cyclone.
The bottom of described combustion decomposition stove is provided with burner.
Described feeding unit is connected with the cyclone cylinder import airduct of described suspension preheating system.
The advantage that the present invention has and positively effect are: the limestone powder 1) after preheating can from the bottom of combustion decomposition stove and middle part feeding, and combustion decomposition furnace temperature can flexible, can ensure that the lime powder activity generated is high; 2) make full use of out the heat content of intensification air in the one cyclonic cylinder waste gas of suspension preheating system and suspension cooling system, reach the object of energy saving of system; 3) level of automation is high, and production efficiency is high, is convenient to expand the scale of production.
Accompanying drawing explanation
Fig. 1 is the structural representation that calcined limestone of the present invention produces the device of active lime powder.
In figure: 1 is feeding unit, 2 is preheater one cyclonic cylinders, and 3 is preheater secondary rotary air ducts, 4 is preheater three grades of cyclone cylinders, and 5 is preheater Category Four cyclone cylinders, and 6 is combustion decomposition stoves, 7 is preheater five-stage whirlwind cylinders, 8 is cooling cyclone one cyclonic cylinders, and 9 is cooling cyclone secondary rotary air ducts, and 10 is cooling cyclone three grades of cyclone cylinders, 11 is cooling airs, 12 is dust-precipitators, and 13 is material distributing valves, and 14 is burners.
Embodiment
For summary of the invention of the present invention, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
The invention discloses a kind of method that calcined limestone produces active lime powder, comprise the following steps:
One) take Wingdale as raw material, after broken, grinding obtains limestone powder;
Two) adopt suspension preheating system to carry out preheating to limestone powder, and adopt combustion decomposition stove to carry out heating to limestone powder after preheat to make its further thermal endothermic decomposition;
Three) by through step 2) material after thermolysis obtains active lime powder through the cooling of suspension cooling system.
The fuel that described combustion decomposition stove adopts is any one in coal, Sweet natural gas, fuel oil and refinery coke.
Refer to Fig. 1, aforesaid method calcined limestone is adopted to produce the device of active lime powder, comprise the grinding system (not shown) set gradually, feeding unit, mulitistage cyclone, combustion decomposition stove 6, multistage cyclone water cooler, the top of described combustion decomposition stove 6 is provided with band material air stream outlet, bottom is provided with air flow inlet, middle part and bottom are provided with material inlet, combustion decomposition furnace gas influx is connected with the air outlet of the one cyclonic cylinder 8 of described multistage cyclone water cooler, combustion decomposition furnace zone material air stream outlet is connected with the import airduct of the final stage cyclone cylinder of described mulitistage cyclone, combustion decomposition stove material inlet is connected with the feed opening of the penultimate stage cyclone cylinder of mulitistage cyclone.The one cyclonic cylinder of described pre-heating system is connected with feeding unit 1 respectively with the charging airduct of secondary rotary air duct.The one cyclonic cylinder 2 of described pre-heating system is provided with the airduct be connected with grinding system.
The principle of work of the present embodiment:
Wingdale rises to the feeding unit of preheater tower top of the trellis after grinding by lift technique, material by after the import airduct that first enters preheater one cyclonic cylinder 2 after feeding unit through abundant dispersion, and carry out heat exchange with preheater secondary rotary air duct 3 air-flow out and realize pre-heating temperature elevation, then dust-contained airflow enters preheater one cyclonic cylinder 2 and carries out gas solid separation, isolated material enters the import airduct of preheater secondary rotary air duct 3, and the air-flow after separation enters exhaust pipeline; Material enters after the import airduct of preheater secondary rotary air duct 3 through abundant dispersion, and carry out heat exchange with preheater three grades of cyclone cylinders 4 air-flow out, then dust-contained airflow enters preheater secondary rotary air duct 3 and carries out gas solid separation, isolated material enters the import airduct of preheater three grades of cyclone cylinders 4, and the air-flow after separation enters first step cyclone preheater 2; Material enters after the import airduct of preheater three grades of cyclone cylinders 4 through abundant dispersion, and carry out heat exchange with preheater Category Four cyclone cylinder 5 air-flow out, then dust-contained airflow enters preheater three grades of cyclone cylinders 4 and carries out gas solid separation, isolated material enters the import airduct of preheater Category Four cyclone cylinder 5, and the air-flow after separation enters preheater secondary rotary air duct 3; Material enters after the import airduct of preheater Category Four cyclone cylinder 5 through abundant dispersion, and carry out heat exchange with preheater five-stage whirlwind cylinder 7 air-flow out, then dust-contained airflow enters preheater Category Four cyclone cylinder 5 and carries out gas solid separation, isolated material enters combustion decomposition stove 6, and the air-flow after separation enters preheater three grades of cyclone cylinders 4; Material enters after combustion decomposition stove 6 and cooling cyclone one cyclonic cylinder 8 air-flow out carries out heat exchange, then dust-contained airflow enters preheater five-stage whirlwind cylinder 7 and carries out gas solid separation, isolated material enters the import airduct of cooling cyclone one cyclonic cylinder 8, and the air-flow after separation enters preheater Category Four cyclone cylinder 5; Material enters after the import airduct of cooling cyclone one cyclonic cylinder 8 through abundant dispersion, and carry out heat exchange with cooling cyclone secondary rotary air duct 9 air-flow out and realize lowering the temperature, then dust-contained airflow enters cooling cyclone one cyclonic cylinder 8 and carries out gas solid separation, isolated material enters the import airduct of cooling cyclone secondary rotary air duct 9, and the air-flow after separation enters combustion decomposition stove 6; Material enters after the import airduct of cooling cyclone secondary rotary air duct 9 through abundant dispersion, and carry out heat exchange with cooling cyclone three grades of cyclone cylinders 10 air-flow out and realize lowering the temperature, then dust-contained airflow enters cooling cyclone secondary rotary air duct 9 and carries out gas solid separation, isolated material enters the import airduct of cooling cyclone three grades of cyclone cylinders 10, and the air-flow after separation enters cooling cyclone one cyclonic cylinder 8; Material enters after the import airduct of cooling cyclone three grades of cyclone cylinders 10 through abundant dispersion, and carry out heat exchange with cooling air 11 and again lower the temperature, then dust-contained airflow enters cooling cyclone three grades of cyclone cylinders 10 and carries out gas solid separation, an air-flow part after separation enters cooling cyclone secondary rotary air duct 9, remaining air-flow enters dust-precipitator 12, namely the material that dust-precipitator 12 is collected and cooling cyclone three grades of isolated materials of cyclone cylinder 10 combine is active lime powder finished product, and the gas after dust-precipitator 12 gathers dust enters off gas treatment link.Burner 14 provides fuel for combustion decomposition stove 6.
Feeding unit 1 can control the position that limestone powder enters pre-heating system flexibly.When limestone powder all feeds the import airduct of preheater one cyclonic cylinder 2, realize Pyatyi heat exchange; When limestone powder all feeds the import airduct of preheater secondary rotary air duct 4, only there is level Four heat exchange.
The isolated material of preheater Category Four cyclone cylinder 5 enters combustion decomposition stove 6 through material distributing valve 13, by regulating the aperture of material distributing valve, can regulate and enter the bottom of combustion decomposition stove and the doses at middle part respectively, thus ensures the flexible of combustion decomposition furnace temperature.
The waste gas going out cyclone preheater one cyclonic cylinder can also be caused limestone powder grinding system and dries Wingdale or cause fuel grinding system drying fuel by the present embodiment.
In the present embodiment, pre-heating system is five-stage cyclone preheater, but is not limited thereto.Preheater progression can also be level Four or three grades.
In the present embodiment, multistage cyclone water cooler is made up of three grades of cyclone cylinders, but is not limited thereto.Can also be made up of Category Four cyclone cylinder.
In the present embodiment, described combustion decomposition stove is fuel used is coal, also can be Sweet natural gas, fuel oil, refinery coke.
Content of the present invention is not limited in the above-described embodiment, and the technician in same area can propose other embodiment easily within technical director's thought of the present invention, but this embodiment all should comprise within the scope of the invention.
Although be described the preferred embodiments of the present invention by reference to the accompanying drawings above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, can also make a lot of form, these all belong within protection scope of the present invention.
Claims (4)
1. calcined limestone produces a method for active lime powder, it is characterized in that, comprises the following steps:
One) take Wingdale as raw material, after broken, grinding obtains limestone powder;
Two) adopt suspension preheating system to carry out preheating to limestone powder, and adopt combustion decomposition stove to carry out heating to limestone powder after preheat to make its further thermal endothermic decomposition;
Three) by through step 2) material after thermolysis obtains active lime powder through the cooling of suspension cooling system;
The device realizing the method comprises the feeding unit set gradually, mulitistage cyclone, combustion decomposition stove and multistage cyclone water cooler, the top of described combustion decomposition stove is provided with band material air stream outlet, bottom is provided with air flow inlet, middle part and bottom are provided with material inlet, combustion decomposition furnace gas influx is connected with the air outlet of the one cyclonic cylinder of described multistage cyclone water cooler, combustion decomposition furnace zone material air stream outlet is connected with the import airduct of the final stage cyclone cylinder of described mulitistage cyclone, combustion decomposition stove material inlet is connected with the feed opening of the penultimate stage cyclone cylinder of described mulitistage cyclone.
2. calcined limestone produces the method for active lime powder according to claim 1, it is characterized in that, the fuel that described combustion decomposition stove adopts is any one in coal, Sweet natural gas, fuel oil and refinery coke.
3. calcined limestone produces the method for active lime powder according to claim 1, it is characterized in that: the bottom of described combustion decomposition stove is provided with burner.
4. calcined limestone produces the method for active lime powder according to claim 3, it is characterized in that: described feeding unit is connected with the cyclone cylinder import airduct of described suspension preheating system.
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| CN201310329586.1A CN103387347B (en) | 2013-07-30 | 2013-07-30 | Method and device for producing active lime powder from calcined limestone |
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| CN201310329586.1A CN103387347B (en) | 2013-07-30 | 2013-07-30 | Method and device for producing active lime powder from calcined limestone |
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| CN103387347A CN103387347A (en) | 2013-11-13 |
| CN103387347B true CN103387347B (en) | 2015-01-28 |
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| CN105906223A (en) * | 2016-06-02 | 2016-08-31 | 浙江钙科机械设备有限公司 | Lime powder suspension calcining production line and suspension calcining process thereof |
| CN106630690B (en) * | 2016-12-28 | 2019-06-18 | 柳州市昌泉贸易有限公司 | A kind of method of vacuum calcining production active lime |
| CN106673463B (en) * | 2016-12-28 | 2019-05-03 | 柳州市昌泉贸易有限公司 | A kind of active lime production method |
| CN106587667B (en) * | 2016-12-28 | 2019-05-03 | 柳州市昌泉贸易有限公司 | A kind of method of calcined limestone production active lime powder |
| CN107226627B (en) * | 2017-07-10 | 2022-11-11 | 合肥水泥研究设计院有限公司 | Active powder lime second grade suspension calcining device |
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| CN109836060A (en) * | 2019-04-04 | 2019-06-04 | 南京凯盛国际工程有限公司 | A kind of powdered lime calcining and decomposing preparation system |
| CN109896760A (en) * | 2019-04-04 | 2019-06-18 | 南京凯盛国际工程有限公司 | A kind of device and technique using cement kiln end lime burning |
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| CN114249547B (en) * | 2020-09-24 | 2022-07-05 | 合肥丰达水泥科技有限公司 | Kiln-free calcination process for producing powdery active lime |
| 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 |
| CN114011834A (en) * | 2021-10-15 | 2022-02-08 | 江苏中圣园科技股份有限公司 | Carbide slag calcines reduction retrieval and utilization carbide stove coproduction desulfurizer system |
| CN114956610A (en) * | 2022-05-20 | 2022-08-30 | 南京乐巨国际工程有限公司 | Carbide slag suspension calcining system |
| CN116903272B (en) * | 2023-08-30 | 2024-04-05 | 浙江钙科科技股份有限公司 | Powder lime suspension calcination system with preheating and dispersing functions |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101987783A (en) * | 2010-08-27 | 2011-03-23 | 莱芜钢铁股份有限公司 | Method for producing active pulverized lime by utilizing coal gas to calcine limestone through suspended state pre-heating decomposing furnace |
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2013
- 2013-07-30 CN CN201310329586.1A patent/CN103387347B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101987783A (en) * | 2010-08-27 | 2011-03-23 | 莱芜钢铁股份有限公司 | Method for producing active pulverized lime by utilizing coal gas to calcine limestone through suspended state pre-heating decomposing furnace |
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