CN105130229A - Beta gypsum calcining kiln - Google Patents
Beta gypsum calcining kiln Download PDFInfo
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- CN105130229A CN105130229A CN201510392958.4A CN201510392958A CN105130229A CN 105130229 A CN105130229 A CN 105130229A CN 201510392958 A CN201510392958 A CN 201510392958A CN 105130229 A CN105130229 A CN 105130229A
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- kiln
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- heating tube
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Abstract
The invention discloses a beta gypsum calcining kiln. The kiln comprises a kiln body, a reaction chamber, a heating tube, a material inlet, a material waste gas outlet, a material outlet, a heat source high temperature gas inlet, a heat source waste gas outlet, a flow guiding tube and a lifting plate; the kiln body is provided with a heat source high temperature gas and material cocurrent channel, the heating tube is a heat source high temperature gas and material countercurrent channel, a kiln body heat source channel is communicated with the heating tube through the flow guiding tube, and the kiln body heat source channel and a heating tube heat source channel form a cocurrent and countercurrent complex; and the lifting plate is positioned in the reaction chamber and is fixedly arranged on the inner wall of the kiln body, and the lifting plate is designed to be a separator plate for uniformly dividing the reaction chamber. The calcining kiln adopts cocurrent followed by countercurrent mode cycle and the above design of the lifting plate, so the kiln has the advantages of full utilization of heat energy, heat exchange time prolongation, heat exchange area increase, heat exchange efficiency improvement, improvement of distribution of the above material in the calcining kiln, improvement of the temperature field in the kiln, and increase of the contact area of the material and the heat source, so the purposes of energy saving and high yield are reached, part structures are reasonably arranged, and the making cost is saved.
Description
Technical field
The present invention relates to gypsum production unit, be specifically related to a kind of β gyp-incineration, kiln.
Background technology
Plaster of Paris makes plaster stone thermal dehydration by direct or indirect type of heating, the semi-hydrated gypsum of formation.Semi-hydrated gypsum is divided into αsemiwatergypsum and β semi-hydrated gypsum according to crystalline structure difference.Gypsum dewaters in high-temperature water solution or saturated steam, generation be exactly αsemiwatergypsum, in high temperature air dehydration generate be then β semi-hydrated gypsum.The process that gypsum sloughs crystal water in high temperature air is called gypsum calcination.
At present, the major equipment of domestic gypsum calcination has rotary kiln, vertical frying pan, fluidizing furnace and that moral to grind; Rotary kiln can be divided into horizontal rotation kiln, telescopic rotary kiln.Horizontal rotation kiln divides again downflow system and reverse-flow two kinds, namely refers to that material is identical with direction of heat flow or contrary.Downflow system is low temperature calcination gypsum, and reverse-flow be high-temperature calcined gypsum.The combustion system of rotary kiln has direct heating (inside burning type) and indirect (outer burning formula and interior heated Tube) to heat two kinds.
Interior burning continous way gyp-incineration, kiln, mainly utilize the direct calcined dehydration having contacted material of high-temperature hot flue gas and gypsum raw material, because material and flue gas are for directly to complete heat exchange, equipment thermal efficiency and heat utilization efficiency are all higher, calcinating speed is fast, production energy consumption is low, and shortcoming is that dust in fuel combustion and impurity have been brought in gypsum, thus reduces whiteness and the mechanical property of gypsum.
Outer burning formula and interior heated Tube gyp-incineration, kiln, mainly utilize the indirect contact of high-temperature hot flue gas and gypsum raw material to complete the calcined dehydration of material, because material and flue gas complete heat exchange in an indirect way, can not contaminated gypsum, but heat exchange efficiency is general lower, and production energy consumption is higher.In this gyp-incineration, kiln, be provided with one or more heating tube, gypsum raw material is centered around around heating tube; In order to improve the contact probability of raw material and heating tube, improve thermo-efficiency, what have is designed with material delivering plate in gyp-incineration, kiln, and along with the rotation of calcining kiln, material delivering plate stirs material and do not stop transport dynamic.In calcination process, material ceaselessly moves, and during calcining, material specific surface area is larger, and the contact area of gypsum particle and thermal source is larger, and heat transfer rate is faster, and thermo-efficiency is higher, and equipment is more energy-conservation.
The outer burning formula of current employing and interior heated Tube gyp-incineration, kiln, be no matter downflow system or reverse-flow, the subject matter of existence has: 1, hot gas flow all for once chance through water back, i.e. material and thermal source for once heat exchange, heat utilization rate is low; 2, the structure design without material delivering plate or material delivering plate is unreasonable, cause material cannot scatter as far as possible come, material and heating tube contact area little, rate of heat exchange is low, and energy consumption is high; 3, in the discharge process of waste gas, the heat source exhaust containing impurity, ash content, carbon granule, with main component be moisture, the material waste gas of gypsum particle mixes, cause the bag-type dust regenerant of rear operation to be difficult to utilize, waste useful gypsum resource; 4, heat source high temp air flow inlet, heat source exhaust and material waste gas outlet all design at kiln body termination (downflow system) or kiln tail (reverse-flow), unreasonable structure, so that kiln hood or kiln tail piece is numerous, crowded, complicated, geometrical dimension is too huge, both affected attractive in appearance, given again installation, transport, maintenance band inconvenience; 5, calcining kiln afterbody does not design filter sieve, affects quality product, even causes line clogging, or have in order to address this problem, install a filter sieve additional at afterbody temporarily, then add equipment cost.
Summary of the invention
The object of the present invention is to provide one can increase thermal source and material heat exchange frequency, improve the outer burning formula of heat utilization rate and interior heated Tube gyp-incineration, kiln.
In order to achieve the above object, technical solution of the present invention is: a kind of β gyp-incineration, kiln, comprises kiln body, reaction chamber, heating tube, material inlet, material waste gas outlet, material outlet, heat source high temp gas feed, heat source exhaust outlet, thrust-augmenting nozzle, material delivering plate; The downflow system passage of heat source high temp gas and material is designed with it at described kiln, described heating tube is the reverse-flow passage of heat source high temp gas and material, kiln body heat source passages is communicated with heating tube by thrust-augmenting nozzle, and this kiln body heat source passages and heating tube heat source passages form downflow system and reverse-flow synthesis.This structure design, makes the heat exchanger effectiveness of thermal source and material expand several times.
Described material delivering plate is arranged in reaction chamber, and be fixed on described kiln body inwall, described material delivering plate is designed to the dividing plate of even for reaction chamber decile.Material delivering plate stirs gypsum material by gyrating together with kiln body, allows thermal source indirect heat exchange in gypsum material and kiln downflow system passage with it and the reverse-flow passage of heating tube, and stirring power increases by the chance of material heat exchange, be heated evenly.Material, by the stirring of material delivering plate, can expand itself and the kiln contact area of thermal source in downflow system passage and the reverse-flow passage of heating tube with it, make full use of the heat energy of thermal source, improve thermo-efficiency further, save energy.
A kind of further improvement opportunity scheme, described material delivering plate is stepped appearance by the transverse shape of the dividing plate of the even decile of reaction chamber.
A kind of further improvement opportunity scheme, described material delivering plate is fan blade shape by the transverse shape of the dividing plate of the even decile of reaction chamber.
A kind of further improvement opportunity scheme, described material delivering plate is that spiral is leaf by the transverse shape of the dividing plate of the even decile of reaction chamber.
A kind of optimal technical scheme, described kiln body is designed to hollow interlayer, and described heat source high temp gas feed communicates with this kiln body interlayer, and this heat source high temp gas feed is positioned near kiln hood position.
A kind of optimal technical scheme, described heating tube is positioned at Yao Shen center, and described heat source exhaust outlet is positioned at the end of described heating tube near kiln hood, and communicates with heating tube;
A kind of optimal technical scheme, described thrust-augmenting nozzle is positioned at described heating tube tail end, is communicated with by described kiln body interlayer with heating tube; Heat source high temp gas enters kiln body mezzanine space from heat source high temp gas feed and flows to kiln body caudal directions, by thrust-augmenting nozzle, then flows to heating tube by thrust-augmenting nozzle, flows to the heat source exhaust outlet in kiln hood direction from heating tube near kiln body tail position.
A kind of optimal technical scheme, the space between described kiln body hollow part and heating tube forms described reaction chamber; Material inlet is designed with in the termination of kiln body, and this material inlet communicates with described reaction chamber, gypsum material enters reaction chamber from this material inlet, along with the ceaselessly rotary motion of kiln body, gypsum material flows to afterbody material outlet from kiln hood, gypsum material carries out heat exchange with kiln body interlayer and heating tube in the reaction chamber, thus completes gypsum dehydration process; Be designed with a material waste gas outlet at the end face of kiln hood, and this material waste gas outlet communicates with reaction chamber.
A kind of optimal technical scheme, in order to solve the blocking of calcining kiln afterbody, affects the problem of quality product, directly kiln body afterbody is designed to latticed or lattice-shaped, so both solving prior art Problems existing, again without the need to designing the filtration unit of afterbody in addition, reducing production cost.
Advantage of the present invention:
1, greatly improve the distribution of material in calcining kiln, improve kiln temperature field, increase the contact area of material and thermal source, thus reach energy-conservation, the object of high yield;
2, calcine air-flow and take the recycle of first following current another mistake stream mode, extend heat-exchange time, increase heat interchanging area, improve heat exchange efficiency;
3, block construction connection and reasonable arrangement, saves cost of manufacture.Compared with the prior art, existing calcining kiln opening for feed, material waste gas outlet, heat source high temp hot air intake, heat source exhaust outlet all concentrate on kiln body termination, make kiln body termination too crowded and huge.And heat source exhaust exports and material waste gas outlet shares an exit passageway, so that the heat source exhaust containing impurity, ash content, carbon granule, with main component be moisture, the material waste gas of gypsum particle mixes, bag-type dust regenerant is difficult to utilize, and wastes useful gypsum resource.The present invention is by these block construction scattered distributions at kiln body termination and head, and above-mentioned two waste gas outlets are design separately, overcomes these defects.Kiln body afterbody is designed to latticed, eliminates special filter sieve, has saved cost, solves the problem blocking and affect quality product simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of invention.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the schematic diagram of kiln body of the present invention.
Embodiment
As shown in Fig. 1-Fig. 3, a kind of β gyp-incineration, kiln, comprise frame (19,12), transmission rig 11, power 16, kiln body 8, reaction chamber, heating tube 9, material inlet 1, material waste gas outlet 3, material outlet 14, heat source high temp gas feed 17, heat source exhaust outlet 2, thrust-augmenting nozzle 15, material delivering plate 10.Kiln body 8 is arranged in frame (19,12), rotates under the drive of power 16 and transmission rig 11.Kiln body 8 is designed to hollow interlayer, heat source high temp gas feed 17 and seal closure 6 thereof is designed with at kiln hood 5, heat source gas enters kiln body interlayer 7 from this heat source high temp gas feed 17, with material in the same way following current to kiln body 8 afterbody, heating tube 9 is entered by thrust-augmenting nozzle 15, heat source gas in heating tube 9 with material reverse flow to kiln hood 5 direction, be designed with in kiln hood 5 termination heat source exhaust outlet 2, heat source gas residual gas from this heat source exhaust outlet 2 discharge.Heating tube 9 relies on bracing frame 18 to be fixed on the inwall of kiln body 8 hollow part.Forming reactions room, space between kiln body 8 hollow part and heating tube 9.Material inlet 1 is designed with in the termination of kiln body 8, and this material inlet 1 communicates with reaction chamber, gypsum material enters reaction chamber from this material inlet 1, along with the ceaselessly rotary motion of kiln body, gypsum material is from kiln body header stream rearwardly material outlet 14, gypsum material carries out heat exchange with kiln body interlayer 7 and heating tube 9 in the reaction chamber, thus completes gypsum dehydration process.Be designed with a material waste gas outlet 3 at the end face 4 near kiln hood 5, and this material waste gas outlet 3 communicates with reaction chamber.
Material delivering plate 10 is fixed with at the hollow inwall of kiln body 8, material delivering plate 10 is by the dividing plate of even for reaction chamber decile, it is leaf that the transverse shape of this dividing plate is designed to stepped appearance or fan blade shape or spiral, the material delivering plate of this kind of shape can will enter the material stirring of reaction chamber smoothly, make material as much as possible with the hot gas heat exchange in kiln body sandwich passage and heating tube, strengthen material-heat-exchanging frequency and make it to be heated evenly.
Blocking to solve calcining kiln afterbody 13, affecting the problem of quality product, directly kiln body afterbody 13 is designed to latticed or lattice-shaped.
Claims (9)
1. a β gyp-incineration, kiln, comprises kiln body (8), reaction chamber, heating tube (9), material inlet (1), material waste gas outlet (3), material outlet (14), heat source high temp gas feed (17), heat source exhaust outlet (2), thrust-augmenting nozzle (15), material delivering plate (10); It is characterized in that:
Described kiln body (8) is designed with the downflow system passage of heat source high temp gas and material, the reverse-flow passage that described heating tube (9) is heat source high temp gas and material, kiln body (8) heat source passages is communicated with heating tube (9) by thrust-augmenting nozzle, and this kiln body (8) heat source passages and heating tube (9) heat source passages form downflow system and reverse-flow synthesis;
Described material delivering plate (10) is arranged in reaction chamber, and be fixed on described kiln body (8) inwall, described material delivering plate (10) is designed to the dividing plate of even for reaction chamber decile.
2. β gyp-incineration, kiln according to claim 1, is characterized in that: described material delivering plate (10) is stepped appearance by the transverse shape of the dividing plate of the even decile of reaction chamber.
3. β gyp-incineration, kiln according to claim 1, is characterized in that: described material delivering plate (10) is fan blade shape by the transverse shape of the dividing plate of the even decile of reaction chamber.
4. β gyp-incineration, kiln according to claim 1, is characterized in that: described material delivering plate (10) is that spiral is leaf by the transverse shape of the dividing plate of the even decile of reaction chamber.
5. the β gyp-incineration, kiln according to claim 1,2,3 or 4, it is characterized in that: described kiln body (8) is designed to hollow interlayer, described heat source high temp gas feed (17) communicates with this kiln body (8) interlayer, and this heat source high temp gas feed (17) is positioned near kiln hood (5) position.
6. the β gyp-incineration, kiln according to claim 1,2,3 or 4, it is characterized in that: described heating tube (9) is positioned at kiln body (8) center, described heat source exhaust outlet (2) is positioned at the end of described heating tube (9) near kiln hood, and communicates with heating tube (9).
7. β gyp-incineration, kiln according to claim 5, is characterized in that: described thrust-augmenting nozzle (15) is positioned at described heating tube (9) tail end, is communicated with by described kiln body (8) interlayer with heating tube (9).
8. β gyp-incineration, kiln according to claim 5, is characterized in that: the space between described kiln body hollow part and heating tube forms described reaction chamber; Be designed with material inlet (1) in the termination of kiln body (8), and this material inlet (1) communicates with described reaction chamber; Be designed with a material waste gas outlet (3) at the end face (4) of kiln hood (5), and this material waste gas outlet (3) communicates with reaction chamber.
9. the β gyp-incineration, kiln according to claim 1-7 Arbitrary Term, is characterized in that: described kiln body afterbody (13) is designed to latticed or lattice-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510392958.4A CN105130229B (en) | 2015-07-07 | 2015-07-07 | A kind of β gyp-incineration, kilns |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510392958.4A CN105130229B (en) | 2015-07-07 | 2015-07-07 | A kind of β gyp-incineration, kilns |
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| CN105130229A true CN105130229A (en) | 2015-12-09 |
| CN105130229B CN105130229B (en) | 2017-07-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935425A (en) * | 2017-11-14 | 2018-04-20 | 湖南昌迅科技环保股份有限公司 | One kind rotation crystallization |
| CN113970103A (en) * | 2020-07-22 | 2022-01-25 | 中冶长天国际工程有限责任公司 | Embedded type kiln body air inlet dangerous waste incineration system and incineration method thereof |
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| CN1821142A (en) * | 2006-03-13 | 2006-08-23 | 山东天力干燥设备有限公司 | Gypsum flue gas rotary calcining/cooling kiln |
| CN201031205Y (en) * | 2007-04-25 | 2008-03-05 | 宁夏建筑材料研究院 | Mixed spiral calcining kiln |
| CN201288148Y (en) * | 2008-10-22 | 2009-08-12 | 宁夏建筑材料研究院 | Novel multifuel combustion kiln |
| CN202131228U (en) * | 2011-07-27 | 2012-02-01 | 王立明 | Device for calcining beta-type ceramic mould gypsum |
| CN204779367U (en) * | 2015-07-07 | 2015-11-18 | 湖南昌迅科技环保股份有限公司 | Beta plaster of paris calcining kiln |
| CN204824626U (en) * | 2015-07-07 | 2015-12-02 | 湖南昌迅科技环保股份有限公司 | Beta gypsum calcination kiln |
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2015
- 2015-07-07 CN CN201510392958.4A patent/CN105130229B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1821142A (en) * | 2006-03-13 | 2006-08-23 | 山东天力干燥设备有限公司 | Gypsum flue gas rotary calcining/cooling kiln |
| CN201031205Y (en) * | 2007-04-25 | 2008-03-05 | 宁夏建筑材料研究院 | Mixed spiral calcining kiln |
| CN201288148Y (en) * | 2008-10-22 | 2009-08-12 | 宁夏建筑材料研究院 | Novel multifuel combustion kiln |
| CN202131228U (en) * | 2011-07-27 | 2012-02-01 | 王立明 | Device for calcining beta-type ceramic mould gypsum |
| CN204779367U (en) * | 2015-07-07 | 2015-11-18 | 湖南昌迅科技环保股份有限公司 | Beta plaster of paris calcining kiln |
| CN204824626U (en) * | 2015-07-07 | 2015-12-02 | 湖南昌迅科技环保股份有限公司 | Beta gypsum calcination kiln |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935425A (en) * | 2017-11-14 | 2018-04-20 | 湖南昌迅科技环保股份有限公司 | One kind rotation crystallization |
| CN113970103A (en) * | 2020-07-22 | 2022-01-25 | 中冶长天国际工程有限责任公司 | Embedded type kiln body air inlet dangerous waste incineration system and incineration method thereof |
| CN113970103B (en) * | 2020-07-22 | 2023-10-27 | 中冶长天国际工程有限责任公司 | Dangerous waste incineration system and incineration method for embedded kiln body air inlet |
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| CN105130229B (en) | 2017-07-11 |
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