CN1821142A - Gypsum flue gas rotary calcining/cooling kiln - Google Patents
Gypsum flue gas rotary calcining/cooling kiln Download PDFInfo
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- CN1821142A CN1821142A CN 200610044446 CN200610044446A CN1821142A CN 1821142 A CN1821142 A CN 1821142A CN 200610044446 CN200610044446 CN 200610044446 CN 200610044446 A CN200610044446 A CN 200610044446A CN 1821142 A CN1821142 A CN 1821142A
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Abstract
The rotary flue gas calcining/ cooling kiln speciall for gypsum has common rotary cylinder structure but hot flue gas through the metal coil pipes inside the calcining kiln as heat source. The inside flue gas coil pipes are in suck structure form that there are relatively thick metal pipes in the center of the cylinder and relatively thin metal coil pipes in rectangular, triangular or circular configuration near the cylinder wall, with the central pipes and the peripheral coil pipes being connected through small flue gas chambers and flue gas after heat exchange being exhausted outside the calcining kiln. Thus, indirect heat exchange between the material and the hot flue gas is realized and relatively high gas inlet temperature may be adopted. Therefore, the present invention has high heat exchange efficiency, high yield, increased contact area between the material and coil pipes and easy operation and maintenance.
Description
Technical field
The present invention relates to a kind of drying plant, relate in particular to a kind of gypsum flue gas rotary calcining/cooling kiln.
Background technology
Present existing gypsum calcination kiln is mainly the steam calcination kiln, and its main structure is inner steam coils.At preceding half section of this equipment, the moisture of material is bigger, coheres easily, not easy to clean.The making processes of equipment is also very difficult, and welding is trouble very, the steam leakage phenomenon occurs easily in the operational process of equipment, and the difficulty of repairing is very big.In the steam coils form of this equipment feed end, heat exchange efficiency is also very poor, because steam coils internal condensation water is more herein, the volume that steam occupies is little, and heat passes and comes seldom, so reduced heat exchange efficiency.Coil form is difficult to material is taken up, and often only carries out dehumidifying and calcining to material by the indirect heat exchange of steam coils.So it is poor that the shortcoming of this equipment is a heat exchange efficiency, manufacture with maintenance difficulty big.
In addition, the domestic flue gas rotary calcining kiln that also has a kind of at gypsum calcination, its main structure formation is similar to common revolving drum, and is inner for being mainly the flight structure, in the operational process of equipment, material relies on flight to take up, scatter in cylinder inside, flue gas directly contacts with material then, because the temperature of flue gas is very high, so the time that material contacts with flue gas is very short, carry out the dehumidifying and the calcining of gypsum at short notice.The shortcoming of this equipment is that the precision of product is low, poor quality.
Summary of the invention
The objective of the invention is for overcoming above-mentioned the deficiencies in the prior art, provide a kind of simple in structure, manufacturing is easy to maintenance, heat exchange efficiency is high, the gypsum flue gas rotary calcining/cooling kiln of good product quality.
For achieving the above object, the present invention has adopted following technical scheme: a kind of gypsum flue gas rotary calcining/cooling kiln, it comprises the kiln body, one end of kiln body calcining section is a material inlet, the other end has calcining section discharge port, and described kiln body calcining intersegmental part is provided with the high-temperature flue gas circulation line device of indirect heating.
Described kiln body calcining section is round tube type and is connected with indirect type refrigerating unit one or split.
Described high-temperature flue gas circulation line device comprises, the air inlet coil pipe that is positioned at kiln body central authorities that extends along kiln body calcining section axis; Air inlet coil pipe and the loop board pipe coupling parallel that is positioned at kiln body internal perisporium with kiln body axis.
Described air inlet coil pipe is connected by smoke chamber with the loop coil pipe; The exhanst gas outlet of loop coil pipe is positioned at the material inlet place of kiln body calcining section.
The described loop coil pipe of respectively organizing is divided into some circular groups, every group of loop coil pipe and one or several air inlet disk pipe coupling; The air inlet coil pipe is all uniform by annular, and its quantity is distinguished mutually; Distance between every group of corresponding connection with the air inlet coil pipe of loop coil pipe, every group of loop coil pipe is bigger.
Described loop coil pipe is divided into some rectangle groups, every group of loop coil pipe and one or the some corresponding connections of air inlet coil pipe; Distance between every group of loop coil pipe is bigger.
Described loop coil pipe is divided into some triangle sets, and every group of loop coil pipe advances the corresponding connection of flue gas coil pipe with one or some; Distance between every group of loop coil pipe is bigger.
Described indirect cooling device matches with the kiln shape, the uniform spiral coil cooling tube of at least one row annular of arranging in its inner peripheral wall, and for feeding cold wind, cooling air ingress is provided with the discharging cover in the spiral coil cooling tube.
Described discharge port is in the kiln body bottom of kiln body calcining section with indirect type refrigerating unit junction, and controlled by valve; Cold wind entrance end bottom at cooling section is provided with discharge port; Material inlet is arranged at kiln body calcining section top, is locating to be provided with the moisture outlet simultaneously, and they all are arranged on the charging cover.
The present invention has carried out combination with the advantage of existing installation, steam coils is improved the back feed hot flue gas.Owing to adopted hot flue gas, can adopt the temperature a lot of above vapor temperature, the temperature of steam calcination is generally about 210 ℃, and the temperature of this calcining kiln can be more than 400 ℃, the highlyest can get 600 ℃; And the heat exchange mode of equipment is an indirect heat exchange, and hot flue gas and gypsum are indirect heat exchange, has so not only guaranteed the calcining of high-level efficiency, high yield, and can guarantee the quality of gypsum product again, has realized the combination of two advantages.
The loop coil pipe of this equipment calcining section is taked circle or rectangle or leg-of-mutton arrangement mode, so not only help taking up of gypsum material, the heat interchanging area of material and the heat exchange efficiency of equipment have been strengthened, also greatly deflate the maintenance cost of equipment, allow the maintenance the reality that becomes large-scale calciner easily and fast.
Beneficial effect of the present invention is: calcining is integrated with cooling, has reduced the overlapping investment of equipment, has also reduced the land seizure area, has reduced the cost of investment of engineering.
Though the present invention is a main equipment, the setting of internal structure and external structure has made things convenient for the operation of main equipment, like this, though the volume of this equipment is bigger, bigger weight is arranged, and is easy to operate, easy to maintenance fast, can reduce running cost.
Description of drawings
Fig. 1 structural representation of the present invention
Fig. 2 is the sectional view of Fig. 1;
Fig. 3 is the structural representation of circular coil pipe of the present invention and loop coil pipe;
Fig. 4 is the structural representation of rectangle coil pipe of the present invention and loop coil pipe;
Fig. 5 is the structural representation of trilateral coil pipe of the present invention and loop coil pipe;
Fig. 6 is the spiral coil cooling tube structural representation.
Wherein, 1, gas approach, 2, material inlet, 3, moisture outlet, 4, the charging cover, 5, exhanst gas outlet, 6, kiln body, 7, cooling air outlet, 8, the discharging cover, 9, cooling air import, 10, discharge port, 11, a calcining section discharge port, 12, the moving device of gear ship, 13, bracing or strutting arrangement, 14, the flue gas trend, 15, material trend, 16, the moisture trend, 17, the cooling air trend, 18, air inlet coil pipe, 19, loop coil pipe, 20, spiral coil cooling tube, 21, the calcining section, 22, cooling section, 23, smoke chamber, 24, cooling room
Embodiment
The invention will be further described below in conjunction with accompanying drawing and embodiment.
Embodiment one:
Among Fig. 1, Fig. 2, kiln body 6 comprises calcining section 21 and cooling section 22.Material inlet 2 is arranged at the top at calcining section 21 1 end kiln bodies 6, and it is installed on the charging cover 4.Kiln body 6 central authorities are provided with air inlet coil pipe 18 along its axis, and as shown in Figure 2, it has gas approach 1, and this coil pipe is connected with loop coil pipe 19 on being distributed in kiln body 6 internal perisporiums by smoke chamber 23.The exhanst gas outlet 5 of loop coil pipe 19 is arranged on material inlet 2 places, also has moisture outlet 3 at this place simultaneously.Calcining section 21 rear ends are connected with cooling section 22, and cooling section adopts the indirect type of cooling, and it matches with kiln body 6.The bottom of kiln body 6 also is provided with wheel gearing 12 and bracing or strutting arrangement 13 for calcining section discharge port 11 on the calcining section 21 between calcining section 21 and the cooling section 22.
Among Fig. 3, air inlet coil pipe 18 can have a plurality of and uniform by annular, and they are connected by the uniform loop coil pipe 19 of annular with corresponding multilayer by a plurality of smoke chambers 23, and its quantity can be determined according to actual needs.
Embodiment two:
In the present embodiment, as shown in Figure 4, air inlet coil pipe 18 has a plurality of and by circumference uniform distribution, they are connected with loop coil pipe 19 by a plurality of smoke chambers 23.Loop coil pipe 19 is divided into a plurality of orthogonal groups, and each group distributes along the internal perisporium of kiln body 6.Identical among all the other structures and the embodiment one do not repeat them here.
Embodiment three:
In the present embodiment, as shown in Figure 5, air inlet coil pipe 18 has many old complaints by circumference uniform distribution, and they are connected with loop coil pipe 19 by a plurality of smoke chambers 23.Loop coil pipe 19 is divided into a plurality of leg-of-mutton group, and each group distributes along the internal perisporium of kiln body 6.Identical among all the other structures and the embodiment one do not repeat them here.
Principle of work of the present invention is, the calcining kiln thermal source adopts hot flue gas, and flue gas moves towards the 14 air inlet coil pipes 18 that enter in the calcining kiln by flue gas, walks tube side; Material moves towards 15 along material and enters calcining kiln inside, walks shell side, carries out indirect heat exchange with hot flue gas by coil pipe.The position of air inlet coil pipe 18 is at the middle position in calcining kiln cross section, and for pressing several uniform metallic conduits of annular, this pipe diameter is bigger, traverses the calcining section 21 of this calcining kiln; The loop coil pipe 19 of this flue gas be distributed on this calcining kiln cross section around, air inlet coil pipe 18 and loop coil pipe 19 are connected by small-sized smoke chamber 23 at the afterbody of calcining section 21; Loop coil pipe 19 calcining kiln enter the flue gas position near exhanst gas outlet 5 is arranged.Hot like this flue gas has just formed the circulation in calcining kiln inside, and this working cycle is the self-contained process of hot flue gas, does not directly contact with material, has so just guaranteed the burning quality of material.Air inlet coil pipe 18 is varied with the arrangement form of loop coil pipe 19, is divided into circular ring type, rectangle, trilateral etc.According to the difference of gypsum material, the form of selection is distinguished to some extent.The structure formation of circular ring type is exactly that air inlet coil pipe 18 is arranged respectively with loop coil pipe 19 and is uniform annular, and quantity is distinguished to some extent, uniform arrangement on the circumference of oneself respectively; Rectangle is exactly that loop coil pipe 19 is divided into some rectangle groups, every group of loop coil pipe 19 corresponding one or some air inlet coil pipes 18; Trilateral is exactly that loop coil pipe 19 is divided into some triangle sets, every group of loop coil pipe 19 corresponding one or some air inlet coil pipes 18.Adopt the advantage of rectangle or leg-of-mutton flue gas loop coil pipe 19 to be that loop coil pipe 19 can play the effect of flight, in the equipment operation, material can be taken up, strengthened the contact area of material and coil pipe; In addition, the distance between every group of loop coil pipe 19 is bigger, and is very convenient in equipment cleaning, alleviated the time of maintenance of equipment and cleaning greatly.Added cooling section 22 in the rear end of calcining kiln, the leading portion of kiln body 6 is most of for calcining section 21 like this, and the rear end is a cooling section 22.Indirect refrigerative mode has also been adopted in the design of cooling section 22, and the spiral coil cooling tube 20 of cooling segment has multilayer, all is distributed near the barrel, is the uniform coil pipe mode of several row annulars.It is to walk spiral coil cooling tube 20 inside that cooling air moves towards 17, and material is walked the pipeline outside, has so just realized the indirect type of cooling, can well guarantee quality product.Like this, on an equipment, just realize the calcining and the refrigerating function of gypsum, need not cooler be set separately, saved the investment of equipment, also saved floor space.Be provided with a calcining section discharge port 11 between the calcining section 21 of this calcining kiln and cooling section 22, this discharge port is controlled by valve, if temperature and character after the calcining need not cool off, this valve open then, gypsum is directly from this discharge port discharge; If temperature and character after the calcining must be cooled off, this valve closes then, gypsum is discharged through the discharge port 10 of the cooling slave unit rear end of cooling section.The moisture outlet 3 of this calcining kiln is arranged on above the charging cover 4, and moisture moves towards 16 along moisture outlet 3 discharges, the just steam that emits behind the gypsum indirect heat exchange in the calcining kiln; Cooling air outlet 7 is arranged between calcining section 21 and the cooling section 22; Material inlet 2 all is arranged on above the charging cover 4 with gas approach 1.
Claims (9)
1, a kind of gypsum flue gas rotary calcining/cooling kiln, it comprises the kiln body, and an end of kiln body calcining section is a material inlet, and the other end has calcining section discharge port, it is characterized in that: described kiln body calcining intersegmental part is provided with the high-temperature flue gas circulation line device of indirect heating.
2, gypsum flue gas rotary calcining/cooling kiln according to claim 1 is characterized in that: described kiln body calcining section is connected for round tube type and with indirect type refrigerating unit one or split.
3, gypsum flue gas rotary calcining/cooling kiln according to claim 1 is characterized in that: described high-temperature flue gas circulation line device comprises, the air inlet coil pipe that is positioned at kiln body central authorities that extends along kiln body calcining section axis; Air inlet coil pipe and the loop board pipe coupling parallel that is positioned at kiln body internal perisporium with kiln body axis.
4, gypsum flue gas rotary calcining/cooling kiln according to claim 3 is characterized in that: described air inlet coil pipe is connected by smoke chamber with the loop coil pipe; The exhanst gas outlet of loop coil pipe is positioned at the material inlet place of kiln body calcining section.
5, gypsum flue gas rotary calcining/cooling kiln according to claim 3 is characterized in that: the described loop coil pipe of respectively organizing is divided into some circular groups, every group of loop coil pipe and one or several air inlet disk pipe coupling; The air inlet coil pipe is all uniform by annular, and its quantity is distinguished mutually; Distance between every group of corresponding connection with the air inlet coil pipe of loop coil pipe, every group of loop coil pipe is bigger.
6, gypsum flue gas rotary calcining/cooling kiln according to claim 3 is characterized in that: described loop coil pipe is divided into some rectangle groups, every group of loop coil pipe and one or the some corresponding connections of air inlet coil pipe; Distance between every group of loop coil pipe is bigger.
7, gypsum flue gas rotary calcining/cooling kiln according to claim 3 is characterized in that: described loop coil pipe is divided into some triangle sets, and every group of loop coil pipe advances the corresponding connection of flue gas coil pipe with one or some; Distance between every group of loop coil pipe is bigger.
8, gypsum flue gas rotary calcining/cooling kiln according to claim 2, it is characterized in that: described indirect cooling device matches with the kiln shape, the uniform spiral coil cooling tube of at least one row annular of arranging in its inner peripheral wall, for feeding cold wind, cooling air ingress is provided with the discharging cover in the spiral coil cooling tube.
9, gypsum flue gas rotary calcining/cooling kiln according to claim 1 is characterized in that: described discharge port is in the kiln body bottom of kiln body calcining section with indirect type refrigerating unit junction, and controlled by valve; Cold wind entrance end bottom at cooling section is provided with discharge port; Material inlet is arranged at kiln body calcining section top, is locating to be provided with the moisture outlet simultaneously, and they all are arranged on the charging cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610044446XA CN100340515C (en) | 2006-03-13 | 2006-03-13 | Gypsum flue gas rotary calcining/cooling kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610044446XA CN100340515C (en) | 2006-03-13 | 2006-03-13 | Gypsum flue gas rotary calcining/cooling kiln |
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| Publication Number | Publication Date |
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| CN1821142A true CN1821142A (en) | 2006-08-23 |
| CN100340515C CN100340515C (en) | 2007-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB200610044446XA Expired - Fee Related CN100340515C (en) | 2006-03-13 | 2006-03-13 | Gypsum flue gas rotary calcining/cooling kiln |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381848A (en) * | 2011-07-25 | 2012-03-21 | 黄石市建材节能设备总厂 | Efficient direct-heating gypsum calcination rotary kiln |
| CN102795796A (en) * | 2012-09-11 | 2012-11-28 | 宁夏建筑材料研究院（有限公司） | Externally-calcined middle part high-efficiency gypsum calcining kiln |
| CN105130229A (en) * | 2015-07-07 | 2015-12-09 | 湖南昌迅科技环保股份有限公司 | Beta gypsum calcining kiln |
| CN105154814A (en) * | 2015-10-12 | 2015-12-16 | 贝利特化学股份有限公司 | Rotary nitriding furnace |
| CN110645795A (en) * | 2019-10-10 | 2020-01-03 | 山西智容新能源科技有限公司 | High-efficient material heating device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2263205B1 (en) * | 1974-03-08 | 1980-08-29 | Lambert Ind |
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2006
- 2006-03-13 CN CNB200610044446XA patent/CN100340515C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381848A (en) * | 2011-07-25 | 2012-03-21 | 黄石市建材节能设备总厂 | Efficient direct-heating gypsum calcination rotary kiln |
| CN102795796A (en) * | 2012-09-11 | 2012-11-28 | 宁夏建筑材料研究院（有限公司） | Externally-calcined middle part high-efficiency gypsum calcining kiln |
| CN105130229A (en) * | 2015-07-07 | 2015-12-09 | 湖南昌迅科技环保股份有限公司 | Beta gypsum calcining kiln |
| CN105130229B (en) * | 2015-07-07 | 2017-07-11 | 湖南昌迅科技环保股份有限公司 | A kind of β gyp-incineration, kilns |
| CN105154814A (en) * | 2015-10-12 | 2015-12-16 | 贝利特化学股份有限公司 | Rotary nitriding furnace |
| CN110645795A (en) * | 2019-10-10 | 2020-01-03 | 山西智容新能源科技有限公司 | High-efficient material heating device |
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| Publication number | Publication date |
|---|---|
| CN100340515C (en) | 2007-10-03 |
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| C06 | Publication | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANDONG TIANLI DRYING CO., LTD. Free format text: FORMER NAME: TIANLI DRYING EQUIPMENT CO., LTD., SHANDONG |
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| CP03 | Change of name, title or address |
Address after: 250101, Shandong Province, Ji'nan hi tech Zone, No. 554 Feng Feng Road, environmental science and Technology Park, building 8, Feng Feng building, room 230 Patentee after: Shandong Tianli Drying Co., Ltd. Address before: 250014 Shandong Province, Lixia District of Ji'nan city ten Road East Shouke Hospital Road No. 19 Patentee before: Tianli Drying Equipment Co., Ltd., Shandong |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071003 Termination date: 20180313 |