CN201971745U - Multi-tube calcining kiln for desulfurized gypsum - Google Patents
Multi-tube calcining kiln for desulfurized gypsum Download PDFInfo
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- CN201971745U CN201971745U CN2011201266697U CN201120126669U CN201971745U CN 201971745 U CN201971745 U CN 201971745U CN 2011201266697 U CN2011201266697 U CN 2011201266697U CN 201120126669 U CN201120126669 U CN 201120126669U CN 201971745 U CN201971745 U CN 201971745U
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- heat exchange
- flue gas
- furnace body
- heater
- transfer tube
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Abstract
The utility model relates to a calcination device, in particular to a multi-tube calcining kiln for desulfurized gypsum, which comprises a rotary calcination furnace; a feeder and a flue gas exhaust box are mounted at the head part of the rotary calcination furnace body; and a discharging box is mounted at the tail part of the rotary calcination furnace body. The utility model is characterized in that the rotary calcination furnace body passes through a high-temperature flue gas heat exchange chamber; heat exchange pipes are uniformly distributed on the circumference of the inner wall of the rotary calcination furnace body in the axial direction of the rotary calcination furnace body; and one end of each heat exchange pipe is communicated with the high-temperature flue gas heat exchange chamber, and the other end of each heat exchange pipe is communicated with a flue gas circulation heat exchange jacket mounted at the head part of the rotary calcination furnace body. The utility model has the characteristics that impurities in high-temperature flue gas can effectively prevented from entering into a product, and meanwhile, the desulfurized gypsum is dried, preheated, heated-up and calcined at a time after entering the head part of the furnace body and then flowing out of the tail part of the furnace body, so that the heat exchange efficiency is high, and dust exhausted from tail gas is less; and material turning vanes, auxiliary heat exchange vanes and a circular ring-shaped striker plate are mounted at the head part and the tail part of the interior of the furnace body, so that when material flows in the furnace body, the full heat exchange is achieved.
Description
Technical field
The utility model relates to a kind of calciner, particularly relates to desulfurated plaster multitube calcining kiln.
Background technology
Along with the fast development of China's gypsum industry in recent years, gypsum produces increasing of product, the increase of single gypsum product scale and the raising of product requirement, the production process of terra alba require strict more, and terra alba progressively is divided into more different classification according to the difference that subsequent applications requires.In order to satisfy the demand of market development, gypsum calcination equipment that just must all kinds of special uses of development, with assurance equipment to the optimal adaptation state of raw material and the performance of raw material maximum value;
At present, more at the calciner of desulfurated plaster, mainly contain two classes with regard to its classification, the one, adopt traditional calciner such as fluidizing furnace etc.; The 2nd, adopt hot gas flow directly to contact and calcine; Because the desulfurated plaster particle concentrates on the 30-100 micron, contain 8-15% attached water, directly adopt traditional method of producing terra alba, the method that must consider to adopt oven dry earlier to advance calciner incinerating two step method again could be handled, thermosteresis is big, the energy consumption height, and the terra alba quality of producing is low, and the performance adjustment is difficult for; Though air-flow calcining heat exchange is fast, environmental protection pressure is big, and product is too fast time of coagulation, can not adapt to the calcining of desulfurated plaster raw material.
Summary of the invention
Order of the present utility model is the defective that overcomes prior art, and the desulfurated plaster multitube calcining kiln of the countercurrent heat exchange method that a kind of heat exchange efficiency height, hot gas flow and desulfurated plaster directly do not contact is provided.
The present invention is achieved through the following technical solutions: a kind of desulfurated plaster multitube calcining kiln, comprise rotary calcining furnace, body of heater head at rotary calcining furnace is equipped with charger, flue gas is discharged case, at the body of heater afterbody feed box is installed, it is characterized in that body of heater passes the high-temperature flue gas Heat Room, body of heater axially is evenly equipped with heat transfer tube in the circumference upper edge of inboard wall of furnace body, one end of heat transfer tube and high-temperature flue gas Heat Room UNICOM, the flue gas recirculation heat exchange jacket UNICOM that the other end of heat transfer tube and body of heater head are installed.
Annular is evenly equipped with the turning vane I on the circumference of the flue gas recirculation heat exchange jacket inwall of above-mentioned body of heater head, and annular is evenly equipped with the turning vane II on the circumference of the heat transfer tube of body of heater afterbody and the inboard wall of furnace body between high-temperature flue gas Heat Room connection position and the feed box.
Above-mentioned turning vane I and turning vane II and body of heater axially form less than 90 ° of angles.
Annular is evenly equipped with auxiliary heat exchange blade between the heat transfer tube on the circumference of above-mentioned heat transfer tube and flue gas recirculation heat exchange jacket connection position inwall.
On the inboard wall of furnace body between above-mentioned turning vane II and the feed box, be fixed with circular shelves flitch.
Calcining kiln of the present utility model is at the moisture height of desulfurated plaster moisture, characteristics that material is thin, with high-temperature flue gas by be installed in the intravital heat transfer tube of stove with carried out heat exchange by the incinerating desulfurated plaster, make this calcining kiln have following characteristics: 1, directly not contact with high-temperature flue gas owing to desulfurated plaster, avoided effectively that impurity enters product in the high-temperature flue gas, guaranteed the quality of product; 2, adopt high-temperature flue gas and flowed to the opposite adverse current mode of heat exchange one by one by the incinerating desulfurated plaster, desulfurated plaster is entered by the body of heater head, after the body of heater afterbody flows out, disposable oven dry, pre-heating temperature elevation and the incinerating process finished, has the heat exchange efficiency height, the characteristics that the dust in the exhaust emissions is few; 3, at the intravital head of stove, afterbody material turning vane, auxiliary heat exchange blade, circular shelves flitch have been installed, have been made material in body of heater, in the process of flowing, obtain sufficient stirring, made the heat exchange of material and heat transfer tube abundant.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the I place enlarged view of the utility model Fig. 1;
Fig. 3 is the A-A sectional view of the utility model Fig. 1;
Fig. 4 is the B-B sectional view of the utility model Fig. 1.
Embodiment
Shown in Fig. 1-4, this calcining kiln is rotary calcining furnace, and the transmission system of support 6 and its rotation of drive is installed on the body of heater 7, and the right-hand member of body of heater is the body of heater head, and left end is the body of heater afterbody.At the body of heater head charger 1 and flue gas discharge case 2 are installed, at the body of heater afterbody feed box 11 are installed, the body of heater left end passes high-temperature flue gas Heat Room 9.Body of heater axially is evenly equipped with heat transfer tube 8 in the circumference upper edge of inboard wall of furnace body, the left end of heat transfer tube and high-temperature flue gas Heat Room 9 UNICOMs, flue gas recirculation heat exchange jacket 3 UNICOMs that the right-hand member of heat transfer tube and body of heater head are installed.
Needing the incinerating desulfurated plaster is that the charger 1 of body of heater head enters in the body of heater 7 by right-hand member, be evenly equipped with that turning vane I 4 stirs and promote by annular on the circumference that is installed in flue gas recirculation heat exchange jacket 3 inwalls, and carry out heat exchange and oven dry by the flue gas recirculation heat exchange jacket to left end.Enter then in the body of heater of band heat transfer tube, the stirring by being fixed on the body of heater the uniform auxiliary heat exchange blade 5 of annular between the heat transfer tube and stirring makes desulfurated plaster and heat transfer tube carry out sufficient heat exchange, the realization pre-heating temperature elevation.When desulfurated plaster entered into 9 sections of the high-temperature flue gas Heat Rooms of body of heater afterbody, the intravital temperature of stove this moment was the highest, generally can reach about 1000 ℃, just can realize calcining at this section desulfurated plaster.Desulfurated plaster after the calcining by turning vane II 13 and be fixed on the turning vane II and feed box 11 between inboard wall of furnace body on circular shelves flitch 12, enter feed box, the disposable oven dry of finishing desulfurated plaster, pre-heating temperature elevation and incinerating process.
In said process, high-temperature flue gas is entered in the heat transfer tube 8 by high-temperature flue gas Heat Room 9, move right, carry out sufficient heat exchange by heat transfer tube and desulfurated plaster, the temperature of high-temperature flue gas is reduced gradually, after entering the flue gas recirculation heat exchange jacket 3 of body of heater head, carry out heat exchange with desulfurated plaster once more after, discharge case 2 by the flue gas that is installed in the body of heater head and discharge.Because high-temperature flue gas do not contact with desulfurated plaster, and high-temperature flue gas and the sufficient heat exchange of desulfurated plaster by heat transfer tube and flue gas recirculation heat exchange jacket, the flue-gas temperature of discharge case discharge is low, and dust content is low.
Material changes half water or III type gypsum phase grog through the calcining back into by two water gypsum, in whole oven dry, pre-heating temperature elevation and incinerating process, by processing parameters such as control smoke inlet temperature, flow of flue gas speed, calcination times, just can reach the ratio of control half water or III type, thereby the terra alba of production different varieties is as building gypsum plaster or the fast terra alba that coagulates of goods.
Claims (5)
1. desulfurated plaster multitube calcining kiln, comprise rotary calcining furnace, body of heater head at rotary calcining furnace is equipped with charger, flue gas is discharged case, at the body of heater afterbody feed box is installed, it is characterized in that body of heater (7) passes high-temperature flue gas Heat Room (9), body of heater axially is evenly equipped with heat transfer tube (8) in the circumference upper edge of inboard wall of furnace body, an end of heat transfer tube and high-temperature flue gas Heat Room UNICOM, flue gas recirculation heat exchange jacket (3) UNICOM that the other end of heat transfer tube and body of heater head are installed.
2. desulfurated plaster multitube calcining kiln according to claim 1, it is characterized in that annular is evenly equipped with turning vane I (4) on the circumference of flue gas recirculation heat exchange jacket (3) inwall of above-mentioned body of heater head, annular is evenly equipped with turning vane II (13) on the circumference of the heat transfer tube of body of heater afterbody and the inboard wall of furnace body between high-temperature flue gas Heat Room connection position and the feed box (11).
3. desulfurated plaster multitube calcining kiln according to claim 2 is characterized in that axially forming less than 90 ° of angles with body of heater in above-mentioned turning vane I (4) and turning vane II (13).
4. desulfurated plaster multitube calcining kiln according to claim 3 is characterized in that annular is evenly equipped with auxiliary heat exchange blade (5) between the heat transfer tube on the circumference of above-mentioned heat transfer tube (8) and flue gas recirculation heat exchange jacket (3) connection position inwall.
5. according to claim 3 or 4 described desulfurated plaster multitube calcining kilns, it is characterized in that on the inboard wall of furnace body between above-mentioned turning vane II (13) and the feed box (11), being fixed with circular shelves flitch (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201266697U CN201971745U (en) | 2011-04-27 | 2011-04-27 | Multi-tube calcining kiln for desulfurized gypsum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201266697U CN201971745U (en) | 2011-04-27 | 2011-04-27 | Multi-tube calcining kiln for desulfurized gypsum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201971745U true CN201971745U (en) | 2011-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201266697U Expired - Fee Related CN201971745U (en) | 2011-04-27 | 2011-04-27 | Multi-tube calcining kiln for desulfurized gypsum |
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| CN (1) | CN201971745U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102701617A (en) * | 2012-06-29 | 2012-10-03 | 漳州正霸建材科技有限公司 | Calcination production line and calcination method for industrial by-product gypsum |
| CN103588401A (en) * | 2013-10-12 | 2014-02-19 | 酒泉钢铁(集团)有限责任公司 | Calcining furnace for drying desulphurized gypsum by using converter gas and drying method of calcining furnace |
| CN107406319A (en) * | 2015-02-25 | 2017-11-28 | 吉野石膏株式会社 | Gypsum calcining apparatus and gypsum calcining method |
-
2011
- 2011-04-27 CN CN2011201266697U patent/CN201971745U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102701617A (en) * | 2012-06-29 | 2012-10-03 | 漳州正霸建材科技有限公司 | Calcination production line and calcination method for industrial by-product gypsum |
| CN103588401A (en) * | 2013-10-12 | 2014-02-19 | 酒泉钢铁(集团)有限责任公司 | Calcining furnace for drying desulphurized gypsum by using converter gas and drying method of calcining furnace |
| CN103588401B (en) * | 2013-10-12 | 2015-08-19 | 酒钢集团吉瑞再生资源开发有限责任公司 | Coal gas of converter dries calcining furnace and the furnace drying method of desulfurated plaster |
| CN107406319A (en) * | 2015-02-25 | 2017-11-28 | 吉野石膏株式会社 | Gypsum calcining apparatus and gypsum calcining method |
| CN107406319B (en) * | 2015-02-25 | 2020-06-12 | 吉野石膏株式会社 | Gypsum calcining device and gypsum calcining method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110914 Termination date: 20130427 |