CN112661423B - Double-chamber lime kiln with ring beam supporting structure and use method thereof - Google Patents
Double-chamber lime kiln with ring beam supporting structure and use method thereof Download PDFInfo
- Publication number
- CN112661423B CN112661423B CN202110092401.4A CN202110092401A CN112661423B CN 112661423 B CN112661423 B CN 112661423B CN 202110092401 A CN202110092401 A CN 202110092401A CN 112661423 B CN112661423 B CN 112661423B
- Authority
- CN
- China
- Prior art keywords
- kiln
- kiln chamber
- chamber unit
- zone
- calcining
- 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.)
- Active
Links
- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims abstract description 51
- 235000011941 Tilia x europaea Nutrition 0.000 title claims abstract description 51
- 239000004571 lime Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000001354 calcination Methods 0.000 claims abstract description 58
- 238000001816 cooling Methods 0.000 claims abstract description 26
- 239000007921 spray Substances 0.000 claims abstract description 13
- 210000000038 chest Anatomy 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims description 19
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 18
- 239000003546 flue gas Substances 0.000 claims description 18
- 230000000694 effects Effects 0.000 claims description 12
- 238000005507 spraying Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 238000004821 distillation Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000011819 refractory material Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Furnace Details (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The invention relates to the field of parts, accessories and special devices for general roasting furnaces, kilns, baking ovens or distillation furnaces, in particular to a double-hearth lime kiln with a ring beam supporting structure and a use method thereof. The utility model provides a take ring beam bearing structure's two thorax limekilns, includes two thorax units (1), characterized by: each kiln chamber unit (1) comprises a preheating zone (11), a calcining zone (12), a cooling zone (13), a supporting ring beam (14), a cover plate (15), a spray gun (16) and a refractory layer (17), and the two kiln chamber units (1) are oppositely arranged. The application method of the double-chamber lime kiln with the ring beam supporting structure is characterized by comprising the following steps of: the method comprises the following steps of: ① numbering; ② calcining # 1; ③ calcining # 2; ④ cycles. The invention is convenient for manufacturing and installation and saves investment.
Description
Technical Field
The invention relates to the field of parts, accessories and special devices for general roasting furnaces, kilns, baking ovens or distillation furnaces, in particular to a double-hearth lime kiln with a ring beam supporting structure and a use method thereof.
Background
The working principle of the double-hearth lime kiln is that a lime kiln is formed by two parallel kiln hearths, when one kiln hearth is calcined, hot flue gas enters into the other kiln hearth from a middle channel at the lower part of a calcining zone to preheat raw materials in the other kiln hearth until one calcining period is finished, and the system is automatically switched to the other kiln hearth for calcining, so that the cyclic production is realized. The method ensures that the flow direction of hot flue gas in the calcination process is consistent with the flow direction of materials (all flow from top to bottom), so that parallel-flow calcination is formed, and lime with high activity is obtained; meanwhile, the waste heat of the calcined hot flue gas can be utilized to the maximum extent, so that the lime with high activity is ensured to be obtained, and the best energy-saving effect is obtained, and the method is greatly popularized and applied gradually.
There are three types of main stream double-chamber lime kiln types on the market, and the description is as follows:
1. Bracket supported double-chamber lime kiln:
The annular channel inside the kiln is formed by building refractory materials from the bottom to the top of the channel, and the kiln wall formed by arched refractory materials at the annular channel is used as a support for the refractory materials of the upper calcining zone. Because the channel resistance is large and the material is easy to accumulate, the kiln is stopped for about 2 hours every week and the annular flue gas channel and the middle flue gas channel are cleaned (the air cannon and the manual cooperation are used for cleaning on site), the labor intensity is high, the cleaning process is required to be interrupted, the production stability is unfavorable, and the method is basically eliminated at present.
2. Suspension cylinder type double-chamber lime kiln:
The kiln is structurally characterized in that a section of kiln shell with vacuum inside is manufactured by adopting a special steel plate (heat-resistant stainless steel thick plate), is suspended at the lower part of a normal kiln shell of a calcining zone after being welded in a welding mode, forms an annular flue gas channel with a kiln chamber at the lower part, and is connected with a middle channel. During operation, the suspension cylinder is cooled by cold air.
This structure has the following disadvantages:
i. The intermediate flue gas channel still needs to be cleaned by stopping the kiln at regular intervals (once in 15-20 days), and the production is interrupted in the cleaning process;
S309 stainless steel is used as a hanging cylinder, the design structure is complex, the welding process is complex in the manufacturing process, and the price is high;
Thirdly, the inside of the suspension cylinder needs to be cooled by adopting a fan in the operation process;
And iv, in order to ensure the safety of the kiln body, a diesel fan is required to be adopted for air supply and cooling under the condition of power failure.
3. The double-chamber lime kiln structure of the angle ring type is as follows:
The structure is characterized in that a special steel plate (309S heat-resistant stainless steel thick plate) is adopted to manufacture an angle ring structure, the inside vacuum structure of the angle ring is formed by a kiln shell with the diameter of the kiln chamber at the lower section doubled, and an annular smoke channel is formed at the joint of the kiln chambers by utilizing the natural stacking angle of materials and is connected with the middle channel. The upper kiln chamber is supported on the kiln chamber with a special structure of the angle ring, and the inside and outside of the kiln chamber are not required to be additionally supported to strengthen the structural strength. During operation, cold air is introduced into the corner ring for cooling.
This structure has the following disadvantages:
i. The inner diameter of the lower part of the kiln chamber is doubled, and the steel structure engineering amount and the civil engineering amount are increased by about 5%;
The 309S heat-resistant stainless steel plate is adopted in the corner ring structure, so that the design structure is complex, the manufacturing process is complex, the difficulty is high, the price is high, and the manufacturing period is long;
Special hanging pieces and special refractory materials at the corner rings are designed and used, a large number of special bricks are required to be made of special materials, the manufacturing difficulty is high, the cost is high, and the follow-up maintenance and replacement are not facilitated.
Iv, in the running process, the inside of the corner ring is required to be cooled by adopting a fan for blowing;
and v, in order to ensure the safety of the kiln body, a diesel fan is required to be adopted for air supply and cooling under the condition of power failure.
And vi, the kiln chamber is designed to have too short calcining zone, and the yield can not reach the standard in actual production.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides kiln equipment which reduces flow resistance, avoids ash accumulation, is convenient to install and saves investment, and discloses a double-chamber lime kiln with a ring beam supporting structure and a use method thereof.
The invention achieves the aim through the following technical scheme:
The utility model provides a take ring beam bearing structure's two thorax limekilns, includes two kiln thorax units, characterized by:
each kiln chamber unit comprises a preheating zone, a calcining zone, a cooling zone, a supporting ring beam, a cover plate, a spray gun and a refractory layer,
The preheating zone and the calcining zone are both in columnar tube shape, the top end face of the calcining zone is welded and fixed on the bottom end face of the preheating zone, the cooling zone is in a cylindrical shape with an upward opening, a supporting edge extending to the inner cavity of the cooling zone is arranged at the opening of the cooling zone, a cover plate is rotatably arranged at the inner edge of the supporting edge, and a spray gun is arranged in the preheating zone;
Each kiln chamber unit comprises at least six supporting frames, each supporting frame is evenly arranged around the central axis of the kiln chamber unit, and the bottoms of the supporting frames are fixed on the supporting edges;
The support ring beam is annular, the side edges of the support frames are sequentially welded and fixed on the side edges of the support ring beam, the bottom end surface of the calcining zone is welded and fixed on the top surface of the support ring beam, and the top end of each support frame is welded and fixed on the outer side surface of the lower part of the calcining zone in a different place;
The two kiln chamber units are oppositely arranged, the cooling belts of the two kiln chamber units are mutually communicated with each other at opposite sides to form a middle channel, and the supporting edges at the upper part of the middle channel are mutually welded and spliced;
and the inner side walls of the preheating zone, the calcining zone and the cooling zone are respectively coated with a refractory layer.
The double-chamber lime kiln with the ring beam supporting structure is characterized in that: the support ring beam is annular and the cross section is I-shaped.
The application method of the double-chamber lime kiln with the ring beam supporting structure is characterized by comprising the following steps of: the method comprises the following steps of:
① Numbering: setting two kiln chamber units as 1# and 2# respectively, and respectively adding lime raw materials into the 1# kiln chamber unit and the 2# kiln chamber unit;
② Calcination No. 1: the method comprises the steps of switching to a 1# kiln chamber unit, spraying fire by a spray gun of the 1# kiln chamber unit to calcine lime raw materials, enabling hot flue gas to enter a 2# kiln chamber unit from an intermediate channel at the lower part of a calcining zone of the 1# kiln chamber unit, preheating the lime raw materials in the 2# kiln chamber unit until one calcining period is finished, calcining the 1# kiln chamber unit to generate high-activity lime, and at the moment, completing the preheating of the 2# kiln chamber unit, discharging the high-activity lime generated by the 1# kiln chamber unit and adding the lime raw materials;
③ Calcining 2#: the method comprises the steps of switching to a No. 2 kiln chamber unit, spraying fire by a spray gun of the No. 2 kiln chamber unit to calcine lime raw materials, enabling hot flue gas to enter the No. 1 kiln chamber unit from an intermediate channel at the lower part of a calcining zone of the No. 2 kiln chamber unit, preheating the lime raw materials in the No. 1 kiln chamber unit until one calcining period is finished, calcining the No. 2 kiln chamber unit to generate high-activity lime, and completing preheating of the No. 1 kiln chamber unit;
④ And (3) circulation: steps ② and ③ are repeated.
The application method of the double-chamber lime kiln with the ring beam supporting structure is characterized by comprising the following steps of: in steps ② and ③, the time of one calcination cycle is 12-15 min.
The upper part and the lower part of the kiln chamber are supported by adopting a circle of supporting ring beams, and the side pressure of the kiln chamber during discharging the materials can be born while the kiln chamber is supported. In addition, the kiln shell is designed to enable the outer side of the supporting ring beam to be in direct contact with the outside atmosphere, and forced cooling is not needed.
The invention can meet the requirements of continuous production of lime kilns by improving the design and the structural characteristics, does not need to stop the kiln to clean the annular flue gas channel and the middle channel in the production process, has simple structure and low manufacturing difficulty, is convenient for site construction and installation, and saves engineering investment; the ring beam is welded into an I shape by adopting a steel plate, the outside is directly contacted with air while the reducing part of the kiln chamber plays a supporting role, and no additional fan is needed for cooling, so that the structure is simple, and the safety and reliability are improved; thoroughly solves the problem of dust accumulation in the kiln or in the middle channel in the production process and ensures the production continuity.
The invention has the following beneficial effects:
1. The blocking phenomenon of the annular channel and the middle channel in the production process is eliminated;
2. All kiln shells and supports are made of common carbon steel, and the cost is low.
3. The supporting ring beam adopts a solid structure, the outer side of the supporting ring beam is exposed in the atmosphere, and forced cooling is not needed.
4. And the safety of the kiln body structure is ensured under the power failure state.
5. The refractory material at the channel part is basically designed by welding anchoring parts on an annular ring beam and integrally casting (arranging expansion joints) with a cement-free castable. The top of the annular channel is integrally cast by adopting low-cement castable (provided with expansion joints), and the baking process is finished according to the material requirement, so that the design strength is achieved, the construction difficulty is small, the period is short, the cost is low, and the service life is long.
Drawings
Figure 1 is a schematic diagram of the structure of the present invention,
Figure 2 is a schematic cross-sectional view of the present invention,
FIG. 3 is a schematic illustration of the attachment of the calcining zone, cooling zone and support ring beam in accordance with the present invention.
Detailed Description
The invention is further illustrated by the following specific examples.
Example 1
The utility model provides a take ring beam bearing structure's two thorax limekilns, includes two thorax units 1, as shown in fig. 1~3, and specific structure is:
each kiln chamber unit 1 comprises a preheating zone 11, a calcining zone 12, a cooling zone 13, a supporting ring beam 14, a cover plate 15, spray guns 16 and a refractory layer 17,
The preheating zone 11 and the calcining zone 12 are both in a columnar tube shape, the top end surface of the calcining zone 12 is welded and fixed on the bottom end surface of the preheating zone 11, the cooling zone 13 is in a cylindrical shape with an upward opening, a supporting edge 131 extending towards the inner cavity of the cooling zone 13 is arranged at the opening of the cooling zone 13, a cover plate 15 is rotatably arranged at the inner edge of the supporting edge 131, and a spray gun 16 is arranged in the preheating zone 11;
Each kiln chamber unit 1 comprises six supporting frames 132, each supporting frame 132 is evenly arranged around the central axis of the kiln chamber unit 1, the bottom of each supporting frame 132 is fixed on a supporting edge 131, and the supporting frames 132 are not shown in fig. 1 for the sake of simplicity and clarity;
The support ring beam 14 is annular, the side edges of the support frames 132 are sequentially welded and fixed on the side edges of the support ring beam 14, the bottom end surface of the calcining zone 12 is welded and fixed on the top surface of the support ring beam 14, and the top end of each support frame 132 is welded and fixed on the outer side surface of the lower part of the calcining zone 12 in different places;
the two kiln chamber units 1 are oppositely arranged, the cooling belts 13 of the two kiln chamber units 1 are mutually communicated with each other at opposite sides to form a middle channel 133, and the supporting edges 131 at the upper part of the middle channel 133 are mutually welded and spliced;
The inner side walls of the preheating zone 11, the calcining zone 12 and the cooling zone 13 are coated with a refractory layer 17.
In this embodiment: the support ring beam 14 is formed by welding steel plates, and has an annular shape and an I-shaped cross section.
When the embodiment is used, the following steps are sequentially implemented:
① Numbering: setting two kiln chamber units 1 as 1# and 2# respectively, and respectively adding lime raw materials into the 1# kiln chamber unit 1 and the 2# kiln chamber unit 1;
② Calcination No. 1: the method comprises the steps of switching to a 1# kiln chamber unit 1, spraying fire to calcine lime raw materials by a spray gun 16 of the 1# kiln chamber unit 1, enabling hot flue gas to enter the 2# kiln chamber unit 1 from an intermediate channel 133 at the lower part of a calcining zone 12 of the 1# kiln chamber unit 1, preheating the lime raw materials in the 2# kiln chamber unit 1 until one calcining period is finished, calcining the 1# kiln chamber unit 1 to generate high-activity lime, completing preheating by the 2# kiln chamber unit 1, discharging the high-activity lime generated by the 1# kiln chamber unit 1, and adding the lime raw materials;
③ Calcining 2#: the method comprises the steps that (1) a spray gun 16 of a No. 2 kiln chamber unit 1 is switched to fire to calcine lime raw materials, hot flue gas enters the No. 1 kiln chamber unit 1 from an intermediate channel 133 at the lower part of a calcining zone 12 of the No. 2 kiln chamber unit 1, the lime raw materials in the No. 1 kiln chamber unit 1 are preheated until one calcining period is finished, the time of one calcining period is 12-15 min, the No. 2 kiln chamber unit 1 is calcined to generate high-activity lime, and the No. 1 kiln chamber unit 1 is preheated;
④ And (3) circulation: steps ② and ③ are repeated.
In the embodiment, starting from analyzing the resistance of each key link in the flow process of hot flue gas generated by a calcining kiln chamber to a preheating kiln chamber in the calcining process of the double-chamber lime kiln, the different points of the two lime double-chamber kilns are analyzed, and the advantages and disadvantages of the two types of double-chamber lime kilns are judged from the aspect of gas flow fields, so that an optimal theoretical structural model of a kiln body is designed.
The optimum dimensions of the kiln chamber unit 1 are shown in table 1:
table 1:
In the embodiment, the sectional area of the annular channel is increased by about 10%, the resistance of the annular channel is reduced, dust overflowed along with hot flue gas after the sectional area is increased naturally falls on the lower material surface, and the dust descends along with the materials, so that the resistance of the whole flue gas system is reduced.
The cross section of the middle channel is properly reduced by about 12%, the flow velocity of hot flue gas at the middle channel is improved, and the middle channel is not easy to generate dust accumulation.
Claims (4)
1. The utility model provides a take ring beam bearing structure's two thorax limekilns, includes two thorax units (1), characterized by:
Each kiln chamber unit (1) comprises a preheating zone (11), a calcining zone (12), a cooling zone (13), a supporting ring beam (14), a cover plate (15), a spray gun (16) and a refractory layer (17),
The preheating zone (11) and the calcining zone (12) are both in a columnar tube shape, the top end surface of the calcining zone (12) is welded and fixed on the bottom end surface of the preheating zone (11), the cooling zone (13) is in a cylindrical shape with an upward opening, a supporting edge (131) extending to the inner cavity of the cooling zone (13) is arranged at the opening of the cooling zone (13), a cover plate (15) is rotatably arranged at the inner edge of the supporting edge (131), and a spray gun (16) is arranged in the preheating zone (11);
Each kiln chamber unit (1) comprises at least six supporting frames (132), each supporting frame (132) is evenly arranged around the central axis of the kiln chamber unit (1), and the bottom of each supporting frame (132) is fixed on each supporting edge (131);
The support ring beam (14) is annular, the side edges of the support frames (132) are sequentially welded and fixed on the side edges of the support ring beam (14), the bottom end surface of the calcining zone (12) is welded and fixed on the top surface of the support ring beam (14), and the top ends of the support frames (132) are welded and fixed on the outer side surface of the lower part of the calcining zone (12) in different places;
the two kiln chamber units (1) are oppositely arranged, the cooling belts (13) of the two kiln chamber units (1) are mutually communicated with each other at opposite sides to form an intermediate channel (133), and the supporting edges (131) at the upper part of the intermediate channel (133) are mutually welded and spliced;
the inner side walls of the preheating zone (11), the calcining zone (12) and the cooling zone (13) are respectively coated with a refractory layer (17).
2. The dual chamber lime kiln with ring beam support structure of claim 1, wherein: the support ring beam (14) is annular and has an I-shaped cross section.
3. A method of using a double chamber lime kiln with ring beam support structure as claimed in claim 1 or 2, wherein: the method comprises the following steps of:
① Numbering: setting two kiln chamber units (1) as 1# and 2# respectively, and respectively adding lime raw materials into the 1# kiln chamber unit (1) and the 2# kiln chamber unit (1);
② Calcination No. 1: the method comprises the steps of switching to a 1# kiln chamber unit (1), spraying fire to calcine lime raw materials by a spray gun (16) of the 1# kiln chamber unit (1), enabling hot flue gas to enter a 2# kiln chamber unit (1) from an intermediate channel (133) at the lower part of a calcining zone (12) of the 1# kiln chamber unit (1), preheating the lime raw materials in the 2# kiln chamber unit (1) until one calcining period is finished, calcining the 1# kiln chamber unit (1) to generate high-activity lime, and discharging the high-activity lime generated by the 1# kiln chamber unit (1) and adding the lime raw materials when the 2# kiln chamber unit (1) is completely preheated;
③ Calcining 2#: the method comprises the steps of switching to a No. 2 kiln chamber unit (1), spraying fire to calcine lime raw materials by a spray gun (16) of the No. 2 kiln chamber unit (1), enabling hot flue gas to enter the No. 1 kiln chamber unit (1) from an intermediate channel (133) at the lower part of a calcining zone (12) of the No. 2 kiln chamber unit (1), preheating the lime raw materials in the No. 1 kiln chamber unit (1) until one calcining period is finished, calcining the No. 2 kiln chamber unit (1) to generate high-activity lime, and completing preheating of the No. 1 kiln chamber unit (1);
④ And (3) circulation: steps ② and ③ are repeated.
4. A method of using a dual chamber lime kiln having a ring beam support structure as claimed in claim 3, wherein: in steps ② and ③, the time of one calcination cycle is 12-15 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110092401.4A CN112661423B (en) | 2021-01-24 | 2021-01-24 | Double-chamber lime kiln with ring beam supporting structure and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110092401.4A CN112661423B (en) | 2021-01-24 | 2021-01-24 | Double-chamber lime kiln with ring beam supporting structure and use method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112661423A CN112661423A (en) | 2021-04-16 |
| CN112661423B true CN112661423B (en) | 2024-05-17 |
Family
ID=75414279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110092401.4A Active CN112661423B (en) | 2021-01-24 | 2021-01-24 | Double-chamber lime kiln with ring beam supporting structure and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112661423B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114353506B (en) * | 2022-01-27 | 2023-06-23 | 中冶长天国际工程有限责任公司 | Annular channel structure for double-chamber lime kiln |
| CN114646222B (en) * | 2022-03-25 | 2023-07-21 | 上海宝冶冶金工程有限公司 | Annular cooling beam and double-chamber kiln |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002060254A (en) * | 2000-08-16 | 2002-02-26 | Nkk Corp | Shaft type lime kiln and production process of quicklime |
| CN201245560Y (en) * | 2008-06-14 | 2009-05-27 | 何志雄 | Cocurrent heat storing type dual-chamber limekiln capable of realizing two-stage calcination |
| CN104058604A (en) * | 2013-03-20 | 2014-09-24 | 佘园园 | Multi-fuel ring beam type lime kiln |
| CN110642539A (en) * | 2019-09-30 | 2020-01-03 | 石家庄新华能源环保科技股份有限公司 | Double-chamber lime kiln |
| CN111268927A (en) * | 2020-03-23 | 2020-06-12 | 宝钢工程技术集团有限公司 | Double-chamber lime kiln with cantilever beam structure |
| CN215049719U (en) * | 2021-01-24 | 2021-12-07 | 宝钢工程技术集团有限公司 | Double-chamber lime kiln with ring beam supporting structure |
-
2021
- 2021-01-24 CN CN202110092401.4A patent/CN112661423B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002060254A (en) * | 2000-08-16 | 2002-02-26 | Nkk Corp | Shaft type lime kiln and production process of quicklime |
| CN201245560Y (en) * | 2008-06-14 | 2009-05-27 | 何志雄 | Cocurrent heat storing type dual-chamber limekiln capable of realizing two-stage calcination |
| CN104058604A (en) * | 2013-03-20 | 2014-09-24 | 佘园园 | Multi-fuel ring beam type lime kiln |
| CN110642539A (en) * | 2019-09-30 | 2020-01-03 | 石家庄新华能源环保科技股份有限公司 | Double-chamber lime kiln |
| CN111268927A (en) * | 2020-03-23 | 2020-06-12 | 宝钢工程技术集团有限公司 | Double-chamber lime kiln with cantilever beam structure |
| CN215049719U (en) * | 2021-01-24 | 2021-12-07 | 宝钢工程技术集团有限公司 | Double-chamber lime kiln with ring beam supporting structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112661423A (en) | 2021-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112661423B (en) | Double-chamber lime kiln with ring beam supporting structure and use method thereof | |
| CN111268927A (en) | Double-chamber lime kiln with cantilever beam structure | |
| CN203033894U (en) | Parallel flow heat storage double chamber kiln support arch structure | |
| CN102393140A (en) | Suspension type automatic blanking vertical and horizontal dual-purpose heat accumulation energy-saving reduction furnace | |
| CN102359744A (en) | Backdraft multi-return heat storage energy-saving furnace for hearth coaxial staged combustion center | |
| CN111426184A (en) | Continuous electric heating rotary furnace and process for preparing lithium manganate by adopting same | |
| CN109592916A (en) | A kind of double thorax kilns | |
| CN108603660A (en) | Novel top combustion hot stove | |
| CN215049719U (en) | Double-chamber lime kiln with ring beam supporting structure | |
| CN104611498A (en) | External heating type coal-based shaft furnace for producing direct-reduced iron | |
| CN201395572Y (en) | Chute bracket of CDQ furnace | |
| CN108996927B (en) | Double-chamber shaft kiln with cooling support upright post | |
| CN212199027U (en) | Double-chamber lime kiln with cantilever beam structure | |
| CN204461079U (en) | A kind of connection quirk of carbon element anode roasting furnace | |
| CN104596288B (en) | A kind of connection quirk of carbon element anode roasting furnace | |
| CN207210479U (en) | A kind of sector gas saves annealing furnace | |
| CN212902588U (en) | Energy-saving roasting furnace | |
| CN216005676U (en) | Suspension cylinder type double-hearth lime kiln with combined suspension ring structure | |
| CN202304386U (en) | Hearth coaxial segmented burning central re-burning multi-return-stroke heat accumulation energy-saving furnace | |
| CN212833499U (en) | Hearth structure | |
| CN201867064U (en) | Combined type full fiber structure ignition and heat insulation furnace | |
| CN101823832A (en) | All electric melting insulator glass furnace | |
| CN219121101U (en) | Six-eccentric fusion gathering furnace air duct structure | |
| CN212482086U (en) | Energy-saving kiln | |
| CN218937020U (en) | Double-hearth kiln supporting arch refractory material reinforcing, repairing and improving mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |