CN102795796B - Externally-calcined middle part high-efficiency gypsum calcining kiln - Google Patents
Externally-calcined middle part high-efficiency gypsum calcining kiln Download PDFInfo
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- CN102795796B CN102795796B CN201210332823.5A CN201210332823A CN102795796B CN 102795796 B CN102795796 B CN 102795796B CN 201210332823 A CN201210332823 A CN 201210332823A CN 102795796 B CN102795796 B CN 102795796B
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- kiln
- rotary kiln
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- flue gas
- kiln body
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Abstract
The invention relates to an externally-calcined middle part high-efficiency gypsum calcining kiln which comprises a rotary kiln body and a central flue gas pipeline arranged inside the rotary kiln body, wherein the rotary kiln body is divided into a head feed section, a middle calcining section and a tail discharge section according to the feed sequence. The invention is characterized in that the outer side of the middle calcining section of the rotary kiln body is provided with a heat source heat source flue gas chamber which can contain the outer side of the middle calcining section inside. By changing the position of the heat source, the externally-calcined middle part high-temperature heat supply section of the rotary kiln penetrates through the heat source flue gas chamber, thereby greatly increasing the contact heat exchange area of the hot flue gas and the rotary kiln body and enhancing the heat efficiency. The flue gas subjected to heat exchange enters a flue gas circulation pipeline and the central pipeline in the kiln through a flue gas channel arranged at the externally-calcined middle part high-temperature heat supply section, thereby ensuring that the material is sufficiently heated from the feed section to the discharge section, and completing a one-step drying-preheating-calcining process. The invention has the characteristics of high heat exchange efficiency and less dust in exhaust emission.
Description
Technical field
The invention belongs to material of construction calciner technical field, particularly relate to the outer high-efficient gyp-incineration, kiln that burns in a kind of middle part.
Background technology
At present, the running condition aspect of the calciner slave unit that building gypsum plaster is conventional is divided and is mainly contained two classes: continous way calciner and intermittent type calciner, the heat transfer of slave unit is formal, can be divided into interior burning equipment and outer burning formula equipment two classes, slave unit form mainly can be divided into again two kinds of forms of rotary kiln and frying pan.Rotary kiln because of its technology reliable, stable, easy and simple to handle, thereby become gypsum produce main flow equipment.
Rotary kiln device is applied to gypsum calcination field and experiences following developmental stage: (1) is the outer rotary kiln that burns intermittently, burns rotary kiln in (2), (3) inside and outside multifuel combustion rotary kiln, (4) outer burning formula coil kiln.The at present more advanced outer burning formula coil kiln of just genus, its thermal source flue gas does not directly contact with calcining materials, the operation of material in kiln is not subject to the impact of hot blast air quantity, blast, and internal recycling pipeline can guarantee being again fully heated of material, thereby improved product production and quality.But its shortcoming is: thermal source is arranged on one end of kiln body, the contact area of thermal source smoke chamber and kiln body is too small, the conduction of heat that cannot make full use of cylindrical shell heats material, cause kiln internal recycle pipeline heat exchange pressure to increase, the device length of having to take to increase, increase the deficiency of the method compensation heat exchange of pipeline heat-transfer surface, thereby increased the cost of manufacture of equipment.
Summary of the invention
Object of the present invention is just to overcome the defect of above-mentioned prior art, and a kind of heat source position that passes through to change is provided, and strengthen thermal source arrangement space, thereby increase thermal source and kiln contact level is long-pending, outside the middle part of raising heat utilization rate, burns high-efficient gyp-incineration, kiln.
The technical scheme taked is for achieving the above object:
The outer high-efficient gyp-incineration, kiln that burns in a kind of middle part, comprise according to pan feeding and be successively divided into the rotary kiln kiln body of head pan feeding section, middle part calcining section and afterbody discharging section and be arranged on the central flue of rotary kiln kiln body inside, it is characterized in that: in the middle part of a rotary kiln kiln body calcining section arranged outside, have the thermal source smoke chamber that can be coated wherein.
The circulating line that described thermal source smoke chamber arranges by flue and along calcining kiln kiln body inwall is communicated with central flue.
The end of described central flue is provided with flue gas and discharges case.
Described thermal source smoke chamber is arranged between two bracing or strutting arrangements of rotary kiln kiln body.
The present invention is by changing heat source position, make outside the middle part of rotary kiln burning formula high temperature to hot arc in thermal source smoke chamber, thereby greatly improved the contact heat-exchanging area of hot flue gas and rotary kiln cylindrical shell, improve thermo-efficiency.Flue gas after heat exchange simultaneously enters the inner flue gas recirculation pipeline of kiln and center tube by burning formula high temperature outside middle part to the exhaust gases passes of hot arc setting again, guarantee that material is from feed zone until being fully heated of discharging section, realized the disposable process that completes oven dry, pre-heating temperature elevation and calcining, there is heat exchange efficiency high, the few feature of dust in exhaust emissions.
Accompanying drawing explanation
Fig. 1 is the outer structural representation sketch that burns high-efficient gyp-incineration, kiln in the present invention middle part.
Embodiment
Outside middle part of the present invention, burn high-efficient gyp-incineration, kiln, comprise raising material unit 6, rotary kiln bottom driving device 13 and bracing or strutting arrangement 7 in central flue 5, the rotary kiln kiln body in rotary kiln kiln body, rotary kiln kiln body.Described rotary kiln kiln body is successively divided into head pan feeding section 1, middle part calcining section 2 and afterbody discharging section 3 according to pan feeding, and head pan feeding section 1 place of rotary kiln kiln body is provided with charger 8, and afterbody discharging section 3 is provided with feed box 12.The end that is located at head pan feeding section 1 of central authorities' flue 5 is provided with flue gas and discharges case 9, and this flue gas discharge case 9 stretches out kiln body waste gas is discharged.Between rotary kiln kiln body two bracing or strutting arrangements 7, rotary kiln middle part calcining section 2 arranged outside have the thermal source smoke chamber 10 that can be coated wherein, this thermal source smoke chamber 10 connects with the circulating line 4 that is axially uniformly distributed setting along rotary kiln kiln body inwall surrounding by flue 11, and the other end of circulating line 4 is communicated with center tube.At head, the afterbody of rotary kiln kiln body, material turning vane, auxiliary heat-exchanging blade, circular shelves flitch etc. have been installed, make material more abundant heat exchange in mobile process in body of heater, thereby realized under same size production capacity, reduce equipment size, reduced apparatus processing cost and running cost.
Claims (3)
1. outside a middle part, burn high-efficient gyp-incineration, kiln, comprise according to pan feeding and be successively divided into the rotary kiln kiln body of head pan feeding section (1), middle part calcining section (2) and afterbody discharging section (3) and be arranged on the central flue (6) of rotary kiln kiln body inside, it is characterized in that: in the middle part of rotary kiln kiln body calcining section (2) arranged outside, have the thermal source smoke chamber (10) that can be coated wherein, the circulating line (4) that described thermal source smoke chamber (10) arranges by flue (11) and along calcining kiln kiln body inwall is communicated with central flue (6).
2. according to burning high-efficient gyp-incineration, kiln outside middle part claimed in claim 1, it is characterized in that: the end of described central flue (6) is provided with flue gas and discharges case (9).
3. according to burning high-efficient gyp-incineration, kiln outside middle part claimed in claim 1, it is characterized in that: described thermal source smoke chamber (10) is arranged between two bracing or strutting arrangements (7) of rotary kiln kiln body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210332823.5A CN102795796B (en) | 2012-09-11 | 2012-09-11 | Externally-calcined middle part high-efficiency gypsum calcining kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210332823.5A CN102795796B (en) | 2012-09-11 | 2012-09-11 | Externally-calcined middle part high-efficiency gypsum calcining kiln |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102795796A CN102795796A (en) | 2012-11-28 |
| CN102795796B true CN102795796B (en) | 2014-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210332823.5A Expired - Fee Related CN102795796B (en) | 2012-09-11 | 2012-09-11 | Externally-calcined middle part high-efficiency gypsum calcining kiln |
Country Status (1)
| Country | Link |
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| CN (1) | CN102795796B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261708B (en) * | 2014-09-24 | 2016-02-10 | 安徽晋马环保节能科技有限公司 | A kind of energy-saving chemical gypsum is dried and calcination system |
| CN104944816B (en) * | 2015-06-29 | 2017-01-25 | 湖南昌迅科技环保股份有限公司 | Rotary crystallization kiln for alpha gypsum powder |
| CN113758180B (en) * | 2021-09-27 | 2022-11-25 | 攀钢集团攀枝花钢铁研究院有限公司 | Dispersion feeding system for titanium concentrate drying |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100340515C (en) * | 2006-03-13 | 2007-10-03 | 山东天力干燥设备有限公司 | Gypsum flue gas rotary calcining/cooling kiln |
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2012
- 2012-09-11 CN CN201210332823.5A patent/CN102795796B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN102795796A (en) | 2012-11-28 |
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Granted publication date: 20140416 Termination date: 20150911 |
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