CN203855520U - Carbon dioxide recovery room type lime shaft kiln - Google Patents
Carbon dioxide recovery room type lime shaft kiln Download PDFInfo
- Publication number
- CN203855520U CN203855520U CN201420240606.8U CN201420240606U CN203855520U CN 203855520 U CN203855520 U CN 203855520U CN 201420240606 U CN201420240606 U CN 201420240606U CN 203855520 U CN203855520 U CN 203855520U
- Authority
- CN
- China
- Prior art keywords
- kiln
- carbon dioxide
- limestone
- shaft furnace
- lime
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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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 utility model relates to a lime shaft kiln and particularly relates to a carbon dioxide recovery room type lime shaft kiln. The lime shaft kiln comprises a lime kiln body portion, lime kiln combustion devices and a lime kiln control system, wherein a plurality of rectangular-type lime kiln combustion devices, which are arranged side by side, are arranged at limestone calcination zones of the lime kiln body portion, the spaces between the adjacent lime kiln combustion devices are limestone calcination zones, gas and air are combusted inside lime kiln combustion devices and limestone can be decomposed due to the high temperature generated by the radiation of the combustion chamber or thermal energy produced by convection. According to the carbon dioxide recovery room type lime shaft kiln, exhaust gas produced by combusting gas and air does not direct contact with the decomposition of limestone, the quality of lime is improved, high-purity carbon dioxide can also be recovered at a relatively low cost and meanwhile the environmental pollution due to the direct emission of carbon dioxide into the atmosphere is avoided.
Description
Technical field
The utility model relates to a kind of lime shaft kiln, relates in particular to a kind of carbon dioxide recovery cell-type lime shaft kiln.
Background technology
Each Iron And Steel Company of China (factory) is all provided with Lime Factory (workshop) at present, but only has Baogang, wide steel, heavy steel (three factories are all sent out with PSA), Anshan iron and steel plant (chemical absorption method) Deng Shuojia steel mill to be provided with the Lime Factory that can reclaim carbonic acid gas.According to incompletely statistics, Baosteel output is 10000t/, and Anshan iron and steel plant output is 5000t/, and the gas concentration lwevel of various kiln type process gas and lime output are all different, and ratio is roughly 54:43, according to lime output, can calculate carbonic acid gas output.At present except indivedual Lime Factories reclaim carbonic acid gas, all emptying of the carbonic acid gas of most of limestone kiln output.As want remanufacture carbonic acid gas, and need to pass through the processes such as dedusting, desulfurization, denitrogenation, treated spent air temperture, 30 DEG C of left and right, adopts roots blower force feed, pressure 50 ~ 100kPa, the carbonic acid gas running cost after therefore reclaiming is too high.
Steel mill of China, chemical plant (PVC) and other industry need 200,000,000 to 2.5 hundred million tons of lime every year, and that means 1.6 hundred million to 200,000,000 tons of CO
2be discharged in air serious environment pollution.If reclaim CO
2, too high (the about 1000 yuan/ton of CO of cost
2).Large-scale staterun enterprise is symbolistic CO
2reclaim, but reclaim CO
2also lose.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of carbon dioxide recovery cell-type lime shaft kiln that can simultaneously produce fine work lime and two kinds of products of high-pureness carbon dioxide, reduces CO
2cost recovery (about 50 yuan/ton of CO
2), greatly reduce the CO that lime production causes
2quantity discharged.
The utility model adopts following technical scheme:
A kind of carbon dioxide recovery cell-type lime shaft kiln, it comprises limekiln body part, limestone kiln combustion unit and limestone kiln Controlling System, described limekiln body part comprises shaft furnace main body, is arranged at the kiln body top cover at shaft furnace main body top and is arranged at the passive shaft furnace foundation of civil work of shaft furnace bottom part body, described kiln body top cover top is provided with the distribution device being communicated with shaft furnace main body, and described shaft furnace main body top is provided with carbon dioxide recovering apparatus;
The peripheral thermal insulation layer of kiln body being connected with the external wall of kiln inside described shaft furnace main body comprises the external wall of kiln and is arranged at the external wall of kiln, described shaft furnace main body is from top to bottom followed successively by Wingdale storage area, Wingdale preheating zone, limestone calcination district and lime cooling zone, and described shaft furnace bottom part body is provided with ash discharge system;
Described limestone calcination district is provided with more than one group limestone kiln combustion unit, described limestone kiln combustion unit comprises combustion chamber, chute, regenerator and partition wall, described combustion chamber is connected by chute with regenerator, combustion chamber is positioned at regenerator top, described partition wall is longitudinally arranged between combustion chamber, chute, regenerator, limestone kiln combustion unit is divided into the chamber that two tops are communicated with, described regenerator bottom is provided with two air, exhaust steam passage, and described two air, exhaust steam passages are positioned at partition wall both sides;
Described combustion chamber is inner is gas-fired district, and described regenerator inside is waste gas cooling zone, and described gas-fired district and waste gas cooling zone, by the channel connection of chute inside, are provided with gas entry in the middle of described chute, and gas entry top is provided with coal gas burner;
Between described combustion chamber arranged side by side, being decomposition of limestone district, is ash discharge passage between described regenerator arranged side by side; Described ash discharge passage is communicated with the ash discharge system of shaft furnace bottom part body.
Further, described limestone kiln combustion unit is arranged side by side in limestone calcination district, traverses shaft furnace main body.
Further, described lime cooling zone is provided with downdraft pipe and bottom cold-air duct, and described downdraft pipe is positioned at cold-air duct top, bottom, and described downdraft pipe and bottom cold-air duct run through the external wall of kiln and the peripheral thermal insulation layer of kiln body.
Further, described ash discharge system comprises cement output tank, and described ash discharge passage is by cement output tank and shaft furnace foundation of civil work internal communication.
Further, in described shaft furnace foundation of civil work, be provided with weighing device and storage hopper, described weighing device is positioned at cement output tank below, and described storage hopper is positioned at weighing device below.
Further, described carbon dioxide recovering apparatus runs through the external wall of kiln and the peripheral thermal insulation layer of kiln body.
Further, described Controlling System comprises the level gage that is arranged on shaft furnace main body top, be arranged on the carbonic acid gas variable valve of carbon dioxide recovering apparatus one end, be arranged on the gas regulator of gas entry, be arranged on air, the air of exhaust steam passage one end, waste gas regulating valve, be arranged on the downdraft variable valve of downdraft pipe one end, be arranged on the bottom cold air adjusting valve on the cold-air duct of bottom, be arranged on upper pressure sensor and the upper temperature sensor of top of combustion chamber, be arranged on middle part pressure transmitter and the middle part temperature sensor of decomposition of limestone chamber interior, be arranged on bottom pressure transmitter and temperature of lower sensor in ash discharge passage.
Further, described distribution device is communicated with shaft furnace main body by cloth tube.
Further, on described kiln body top cover, be provided with the piezometric tube being communicated with shaft furnace main body.
Positively effect of the present utility model is as follows:
The heat energy that the high temperature that in lime shaft kiln provided by the utility model, gas-fired produces produces by combustion chamber radiation or convection current makes decomposition of limestone, gas-fired flame and the waste gas Wingdale of all getting along well directly contacts, so not only can improve the quality of lime, improve the return rate of enterprise, and CO
2cost recovery (about 50 yuan/ton of CO
2) very low, the CO of recovery
2purity to 99.9%, brings benefit to enterprise, if the Lime Factory of China all adopts this lime shaft kiln, just discharges less so every year 1.6 hundred million to 200,000,000 tons of CO
2.Active influence is played in improvement to environment, simultaneously to national CO
2reduction of discharging has brought positive impact, promotes the well-being of mankind simultaneously and benefits the world.
The utility model adopts and the waste gas of coal gas and air combustion and burning generation can be controlled in combustion chamber and regenerator, directly do not contact with Wingdale, raw material limestone produces like this two product unslaked lime and carbon dioxide purity are very high, unslaked lime is output below ash discharge passage, and carbonic acid gas reclaims by carbon dioxide recovering apparatus from kiln internal upper part.The lime that so can produce high-quality can produce again the carbonic acid gas of high-quality, in case carbonic acid gas waste, is discharged to and in air, has polluted air and waste again carbonic acid gas.
Controlling System combined sensor can be controlled the stability and safety operation of whole limestone kiln production system, and regulated valve can be realized automatically and regulating according to practical situation.
Brief description of the drawings
Accompanying drawing 1 is the utility model structural representation;
Accompanying drawing 2 is the utility model material process flow diagram;
Accompanying drawing 3 is the structural representation of the utility model limestone kiln combustion unit;
Accompanying drawing 4 is the partial enlarged drawing of A portion in the utility model Fig. 1.
In the accompanying drawings: 1 cloth tube, 2 piezometric tube, 3 level gages, 4 carbon dioxide recovering apparatus, 5 kiln body top covers, the external wall of 6 kiln, the peripheral thermal insulation layer of 7 kiln bodies, 8 Wingdale storage areas, 9 Wingdale preheating zones, 10 decomposition of limestone chambers, 11 gas-fired districts, 12 waste gas cooling zones, 13 chutes, 14 gas entries, 15 lime cooling zones, 16 coal gas burners, 17 air, gas flue, 18 upper pressure sensors, 19 upper temperature sensor, 20 middle part pressure transmitters, 21 middle part temperature sensors, 22 ash discharge passages, 23 bottom pressure transmitters, 24 temperature of lower sensors, 25 bottom temp tactility apparatus, 26 regenerator, 27 combustion chambers, 28 downdraft pipes, 29 bottom cold-air ducts, 30, cement output tank, 31 shaft furnace foundations of civil work, 32 distribution devices, 33 partition walls, 34 weighing devices, 35 storage hoppers, 36 carbonic acid gas regulated valves, 37 gas regulator doors, 38 air, waste gas regulating valve door, 39 exhausting regulated valves, 40 cold-air duct regulated valves, 41 passages.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
A kind of carbon dioxide recovery cell-type lime shaft kiln as shown in accompanying drawing 1-4, it comprises limekiln body part, limestone kiln combustion unit and limestone kiln Controlling System, described limekiln body part comprises shaft furnace main body, be arranged at the kiln body top cover 5 at shaft furnace main body top and be arranged at the passive shaft furnace foundation of civil work 31 of shaft furnace bottom part body, described kiln body top cover 5 tops are provided with the distribution device 32 being communicated with shaft furnace main body, described distribution device 32 is communicated with shaft furnace main body by the cloth tube 1 that runs through kiln body top cover 5, on described kiln body top cover 5, be provided with the piezometric tube 2 being communicated with shaft furnace main body.
Described shaft furnace main body top is provided with carbon dioxide recovering apparatus 4, and carbon dioxide recovering apparatus 4 runs through the external wall 6 of kiln and the peripheral thermal insulation layer 7 of kiln body; Described shaft furnace main body comprises the external wall 6 of kiln and is arranged at the peripheral thermal insulation layer 7 of kiln body that the external wall of kiln 6 inner sides are connected with the external wall 6 of kiln, described shaft furnace main body is from top to bottom followed successively by Wingdale storage area 8, Wingdale preheating zone 9, limestone calcination district and lime cooling zone 15, and described shaft furnace bottom part body is provided with ash discharge system.
As shown in the figure, described limekiln body part entirety is rectangular parallelepiped, described limestone calcination district is provided with more than one group limestone kiln combustion unit, described limestone kiln combustion unit entirety is rectangular shape, be arranged side by side in limestone calcination district, traverse shaft furnace main body, space between adjacent limestone kiln combustion unit is limestone calcination district, top, described lime calcining district is decomposition of limestone district 10, bottom is ash discharge passage 22, described limestone kiln combustion unit comprises combustion chamber 27, chute 13, regenerator 26 and partition wall 33, described combustion chamber 27 is connected by chute 13 with regenerator 26, combustion chamber 27 is positioned at regenerator 26 tops, described partition wall 33 is longitudinally arranged at combustion chamber 27, chute 13, between regenerator 26, limestone kiln combustion unit is divided into the chamber that two tops are communicated with, described regenerator 26 bottoms are provided with two air, exhaust steam passage 17, described two air, exhaust steam passage 17 is positioned at partition wall 33 both sides.
Described combustion chamber 27 is inner is gas-fired district 11, described regenerator 26 inside are waste gas cooling zone 12, described gas-fired district 11 and waste gas cooling zone 12 are by the channel connection of chute 13 inside, in the middle of described chute 13, be provided with gas entry 14, gas entry 14 tops are provided with coal gas burner 16.
Between described combustion chamber 27 arranged side by side, being decomposition of limestone district 10, is ash discharge passage 22 between described regenerator 26 arranged side by side; Described ash discharge passage 22 is communicated with the ash discharge system of shaft furnace bottom part body, described ash discharge system comprises cement output tank 30, described ash discharge passage 22 is by cement output tank 30 and shaft furnace foundation of civil work 31 internal communication, in described shaft furnace foundation of civil work 31, be provided with weighing device 34 and storage hopper 35, described weighing device 34 is positioned at cement output tank 30 belows, described storage hopper 35 is positioned at weighing device 34 belows, in discharging material, can weigh.
Described lime cooling zone 15 is provided with downdraft pipe 28 and bottom cold-air duct 29, and described downdraft pipe 28 is positioned at cold-air duct 29 tops, bottom, and described downdraft pipe 28 and bottom cold-air duct 29 run through the external wall 6 of kiln and the peripheral thermal insulation layer 7 of kiln body.
Described Controlling System comprises the level gage 3 that is arranged on shaft furnace main body top, be arranged on the carbonic acid gas variable valve 36 of carbon dioxide recovering apparatus 4 one end, be arranged on the gas regulator 37 of gas entry, be arranged on air, the air of exhaust steam passage 17 one end, waste gas regulating valve 38, be arranged on the downdraft variable valve 39 of downdraft pipe 28 one end, be arranged on the bottom cold air adjusting valve 40 on the cold-air duct 29 of bottom, be arranged on upper pressure sensor 18 and the upper temperature sensor 19 at 27 tops, combustion chamber, be arranged on middle part pressure transmitter 20 and the middle part temperature sensor 21 of 10 inside, decomposition of limestone chamber, be arranged on bottom pressure transmitter 23 and temperature of lower sensor 24 in ash discharge passage 22.
In limekiln body part, Wingdale enters the inner Wingdale of kiln body storage area 8 from distribution device 32 by cloth tube 1, pass through successively again Wingdale preheating zone 9, decomposition of limestone chamber 10, ash discharge passage 22, cement output tank 30, weighing device 34 arrives storage hopper 35, above-mentioned Wingdale storage area 8, Wingdale preheating zone 9, decomposition of limestone chamber 10, ash discharge passage 22 has a circulation space of one's own, Wingdale is decomposed into lime and carbonic acid gas in decomposition of limestone chamber 10, decomposing the carbonic acid gas producing rises through Wingdale preheating zone 9, Wingdale storage area 8, carbon dioxide recovering apparatus 4 is recovered.
In the combustion unit of limestone kiln, coal gas is sprayed by coal gas burner 16 after entering into chute 13 by gas entry 14, air enters into 11 burnings of interior gas-fired district, waste gas cooling zone 12 by air, the exhaust steam passage 17 of a side, the waste gas that gas-fired produces is discharged from air, the exhaust steam passage 17 of opposite side, waste gas residual heat is recovered in regenerator 26, air is being preheated the regenerator 26 of crossing simultaneously, the heat of regenerator 26 makes material decompose in the interior continuation of ash discharge passage 22, and the waste gas of coal gas, air combustion and generation has a circulation space of one's own.Air is constantly intermittently alternately passed into regenerator 26 by air, the exhaust steam passage 17 of both sides.
The carbonic acid gas that the raw material limestone in tradition limestone kiln produces wastes, and has wasted the energy, has polluted again air, causes huge pollution to environment, even if reclaim carbonic acid gas again because gas concentration lwevel is too low, cost recovery is too high, uneconomical.And the waste gas that the generation of the carbon dioxide recovery cell-type lime shaft kiln that the utility model provides produces coal gas and air and burning is all got along well, decomposition of limestone directly contacts, the quality that has improved lime improves, can under the cost of telling somebody what one's real intentions are, be recovered to again highly purified carbonic acid gas, avoid carbonic acid gas to be directly discharged into the environmental pollution causing in atmosphere simultaneously.
Finally it should be noted that: above embodiment only, in order to the technical solution of the utility model to be described, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record previous embodiment is modified, or part technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of the utility model embodiment technical scheme.
Claims (9)
1. a carbon dioxide recovery cell-type lime shaft kiln, it comprises limekiln body part, limestone kiln combustion unit and limestone kiln Controlling System, it is characterized in that: described limekiln body part comprises shaft furnace main body, is arranged at the kiln body top cover (5) at shaft furnace main body top and is arranged at the passive shaft furnace foundation of civil work of shaft furnace bottom part body (31), described kiln body top cover (5) top is provided with the distribution device (32) being communicated with shaft furnace main body, and described shaft furnace main body top is provided with carbon dioxide recovering apparatus (4);
The peripheral thermal insulation layer of kiln body (7) being connected with the external wall of kiln (6) inside described shaft furnace main body comprises the external wall of kiln (6) and is arranged at the external wall of kiln (6), described shaft furnace main body is from top to bottom followed successively by Wingdale storage area (8), Wingdale preheating zone (9), limestone calcination district and lime cooling zone (15), and described shaft furnace bottom part body is provided with ash discharge system;
Described limestone calcination district is provided with more than one group limestone kiln combustion unit, described limestone kiln combustion unit comprises combustion chamber (27), chute (13), regenerator (26) and partition wall (33), described combustion chamber (27) is connected by chute (13) with regenerator (26), combustion chamber (27) is positioned at regenerator (26) top, described partition wall (33) is longitudinally arranged at combustion chamber (27), chute (13), between regenerator (26), limestone kiln combustion unit is divided into the chamber that two tops are communicated with, described regenerator (26) bottom is provided with two air, exhaust steam passage (17), described two air, exhaust steam passage (17) is positioned at partition wall (33) both sides,
Described combustion chamber (27) is inner is gas-fired district (11), described regenerator (26) inside is waste gas cooling zone (12), described gas-fired district (11) and waste gas cooling zone (12) are communicated with by the inner passage (41) of chute (13), in the middle of described chute (13), be provided with gas entry (14), gas entry (14) top is provided with coal gas burner (16);
Between described combustion chamber arranged side by side (27), being decomposition of limestone district (10), is ash discharge passage (22) between described regenerator arranged side by side (26); Described ash discharge passage (22) is communicated with the ash discharge system of shaft furnace bottom part body.
2. a kind of carbon dioxide recovery cell-type lime shaft kiln according to claim 1, is characterized in that: described limestone kiln combustion unit is arranged side by side in limestone calcination district, traverse shaft furnace main body.
3. a kind of carbon dioxide recovery cell-type lime shaft kiln according to claim 1, it is characterized in that: described lime cooling zone (15) is provided with downdraft pipe (28) and bottom cold-air duct (29), described downdraft pipe (28) is positioned at bottom cold-air duct (29) top, and described downdraft pipe (28) and bottom cold-air duct (29) run through the external wall of kiln (6) and the peripheral thermal insulation layer of kiln body (7).
4. a kind of carbon dioxide recovery cell-type lime shaft kiln according to claim 1, is characterized in that: described ash discharge system comprises cement output tank (30), and described ash discharge passage (22) is by cement output tank (30) and shaft furnace foundation of civil work (31) internal communication.
5. a kind of carbon dioxide recovery cell-type lime shaft kiln according to claim 4, it is characterized in that: in described shaft furnace foundation of civil work (31), be provided with weighing device (34) and storage hopper (35), described weighing device (34) is positioned at cement output tank (30) below, and described storage hopper (35) is positioned at weighing device (34) below.
6. a kind of carbon dioxide recovery cell-type lime shaft kiln according to claim 1, is characterized in that: described carbon dioxide recovering apparatus (4) runs through the external wall of kiln (6) and the peripheral thermal insulation layer of kiln body (7).
7. a kind of carbon dioxide recovery cell-type lime shaft kiln according to claim 1, it is characterized in that: described Controlling System comprises the level gage (3) that is arranged on shaft furnace main body top, be arranged on the carbonic acid gas variable valve (36) of carbon dioxide recovering apparatus (4) one end, be arranged on the gas regulator (37) of gas entry, be arranged on air, the air of exhaust steam passage (17) one end, waste gas regulating valve (38), be arranged on the downdraft variable valve (39) of downdraft pipe (28) one end, be arranged on the bottom cold air adjusting valve (40) on bottom cold-air duct (29), be arranged on upper pressure sensor (18) and the upper temperature sensor (19) at top, combustion chamber (27), be arranged on decomposition of limestone chamber (10) inner middle part pressure transmitter (20) and middle part temperature sensor (21), be arranged on bottom pressure transmitter (23) and temperature of lower sensor (24) in ash discharge passage (22).
8. a kind of carbon dioxide recovery cell-type lime shaft kiln according to claim 1, is characterized in that: described distribution device (32) is communicated with shaft furnace main body by cloth tube (1).
9. a kind of carbon dioxide recovery cell-type lime shaft kiln according to claim 1, is characterized in that: on described kiln body top cover (5), be provided with the piezometric tube (2) being communicated with shaft furnace main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420240606.8U CN203855520U (en) | 2014-05-13 | 2014-05-13 | Carbon dioxide recovery room type lime shaft kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420240606.8U CN203855520U (en) | 2014-05-13 | 2014-05-13 | Carbon dioxide recovery room type lime shaft kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203855520U true CN203855520U (en) | 2014-10-01 |
Family
ID=51605387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420240606.8U Expired - Fee Related CN203855520U (en) | 2014-05-13 | 2014-05-13 | Carbon dioxide recovery room type lime shaft kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203855520U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106892578A (en) * | 2017-04-17 | 2017-06-27 | 王长春 | A kind of full recovery CO2Lime kiln device |
-
2014
- 2014-05-13 CN CN201420240606.8U patent/CN203855520U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103979806B (en) * | 2014-05-13 | 2016-01-27 | 石家庄共创环保科技有限公司 | Carbon dioxide recovery cell-type lime shaft kiln |
| CN106892578A (en) * | 2017-04-17 | 2017-06-27 | 王长春 | A kind of full recovery CO2Lime kiln device |
| CN106892578B (en) * | 2017-04-17 | 2019-09-13 | 王长春 | A kind of full recycling CO2Lime kiln device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141001 Termination date: 20170513 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |