CN103771692A - Dehydroxylation method and device for heavy-caliber quartz tube - Google Patents
Dehydroxylation method and device for heavy-caliber quartz tube Download PDFInfo
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- CN103771692A CN103771692A CN201410063869.0A CN201410063869A CN103771692A CN 103771692 A CN103771692 A CN 103771692A CN 201410063869 A CN201410063869 A CN 201410063869A CN 103771692 A CN103771692 A CN 103771692A
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- deshydroxy
- quartz tube
- dehydroxylation
- kiln car
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Abstract
The invention discloses a dehydroxylation method for a heavy-caliber quartz tube. The dehydroxylation method comprises the steps: feeding the heavy-caliber quartz tube into a dehydroxylation furnace, heating to 300 DEG C at constant speed of 15-20 DEG C/min, and then, preserving the heat for 1-1.2h; then, heating to 700 DEG C at the constant speed of 10-15 DEG C/min, and then, preserving the heat for 1-1.2h; next, heating to 900 DEG C at constant speed of 10-15 DEG C/min, and then, preserving the heat for 1-1.2h; heating to 1150 DEG C at constant speed of 5-8 DEG C/min, and then, preserving the heat for 10-20h; and naturally cooling after power failure, and taking the heavy-caliber quartz tube out of the furnace when the temperature is reduced to below 200 DEG C to finish dehydroxylation operation. Uniform and stable heating and natural cooling ways are adopted in the method, so that the dehydroxylation time is shortened, the quartz tube is uniformly heated, the quartz tube deformation caused by instant high temperature is avoided, and the impact resistance of the quartz tube is improved on the premise of ensuring a favorable dehydroxylation effect; a dehydroxylation furnace body covers on a kiln car, so that the sealing performance in the furnace is good, and the heat loss is reduced; and two stations are provided, so that the production efficiency is increased.
Description
Technical field
The present invention relates to a kind of aftertreatment technology of silica tube, particularly a kind of heavy caliber hydroxyl removal of quartz tube method and deshydroxy device.
Background technology
In quartz glass tube production process, generally adopt fusion draw moulding, this technique can make the quartz glass tube of producing contain the hydroxyl of 100-180ppm, in quartz glass tube, exist high hydroxyl not only can affect the quality of quartz glass tube, but also can under hot environment, affect its work-ing life, therefore, need to carry out deshydroxy processing to it.Deshydroxy technique of the prior art is generally first to heat up, more cooling, and step is simple, deshydroxy weak effect, and easily make quartz glass tube generation explosion.
Summary of the invention
Technical problem to be solved by this invention is for the deficiencies in the prior art, and a kind of heavy caliber hydroxyl removal of quartz tube method reasonable in design, easy to use is provided.
Another technical problem to be solved by this invention is for the deficiencies in the prior art, provides a kind of reasonable in design, the deshydroxy device that heavy caliber hydroxyl removal of quartz tube method easy to use is used.
Technical problem to be solved by this invention is to realize by following technical scheme, the present invention is a kind of heavy caliber hydroxyl removal of quartz tube method, be characterized in, heavy caliber silica tube is sent in deshydroxy stove, at the uniform velocity be warming up to 300 ℃, heat-up rate is 15～20 ℃/min, is then incubated 1～1.2 hour; At the uniform velocity be warming up to 700 ℃ by 10～15 ℃/min of speed again, rear insulation 1～1.2 hour; At the uniform velocity be warming up to 900 ℃ by 10～15 ℃/min of speed again, rear insulation 1～1.2 hour; At the uniform velocity be warming up to 1150 ℃ by 5～8 ℃/min of speed again, rear insulation 10～20 minutes; After power-off, carry out naturally cooling, in the time that temperature is cooled to below 200 ℃, come out of the stove, complete deshydroxy operation.
Technical problem to be solved by this invention can also further realize by following technical scheme, and in described deshydroxy process, keeping relative pressure in deshydroxy stove is 0～-10MPa.
A kind of deshydroxy device that adopts above-mentioned heavy caliber hydroxyl removal of quartz tube method to use, be characterized in, comprise kiln car and cover on the deshydroxy furnace body on kiln car, on kiln car side by side be provided with two stations, be provided with the slideway of conversion station in the bottom of kiln car, on each station, be equipped with and the bead of the bottom fitted seal of deshydroxy furnace body, be set to place the platform of silica tube in bead, the top of described deshydroxy furnace body is provided with the lifting appliance of the deshydroxy furnace body of slinging.
The present invention by adopting uniform and stable intensification in deshydroxy process, and intensification hop count is few, saves the deshydroxy time, silica tube in deshydroxy stove is heated evenly, Heat stability is good, the distortion of having avoided silica tube moment high temperature to cause, can not occur because temperature head is excessive damaged yet; After deshydroxy, first make its temperature be down to 200 ℃ and come out of the stove after following, make silica tube can, because of cooling stress concentration rapidly, under the prerequisite that guarantees good deshydroxy effect, not improve the shock resistance of silica tube; On kiln car in deshydroxy device, be covered with deshydroxy furnace body, kiln car is provided with the bead with deshydroxy furnace body fitted seal, and kiln car has served as the bottom of deshydroxy stove, makes good airproof performance in stove, has reduced scattering and disappearing of heat; On kiln car, be provided with two stations, an entrucking, a roasting, has accelerated production efficiency; Establish the slideway of conversion station in kiln car bottom, easy to use, save space.Compared with prior art, it is reasonable in design, and the deshydroxy time is short, improved the shock resistance of silica tube, and deshydroxy apparatus structure is simple under the prerequisite that guarantees good deshydroxy effect, good airproof performance, and heats is good, easy to use.
Accompanying drawing explanation
Fig. 1 is the structural representation of deshydroxy device in the present invention;
Fig. 2 is the side-view of Fig. 1.
Embodiment
Referring to accompanying drawing, further describe concrete technical scheme of the present invention, so that those skilled in the art understands the present invention further, and do not form the restriction to its right.
See figures.1.and.2, a kind of heavy caliber hydroxyl removal of quartz tube method, sends into heavy caliber silica tube in deshydroxy stove, is at the uniform velocity warming up to 300 ℃, and heat-up rate is 15～20 ℃/min, is then incubated 1～1.2 hour; At the uniform velocity be warming up to 700 ℃ by 10～15 ℃/min of speed again, rear insulation 1～1.2 hour; At the uniform velocity be warming up to 900 ℃ by 10～15 ℃/min of speed again, rear insulation 1～1.2 hour; At the uniform velocity be warming up to 1150 ℃ by 5～8 ℃/min of speed again, rear insulation 10～20 minutes; After power-off, carry out naturally cooling, in the time that temperature is cooled to below 200 ℃, come out of the stove, complete deshydroxy operation.
In described deshydroxy process, keeping relative pressure in deshydroxy stove is 0～-10MPa.
A kind of deshydroxy device that adopts above-mentioned heavy caliber hydroxyl removal of quartz tube method to use, comprise kiln car 2 and cover on the deshydroxy furnace body 1 on kiln car 2, on kiln car 2 side by side be provided with two stations, be provided with the slideway 3 of conversion station in the bottom of kiln car 2, on each station, be equipped with the bead 4 with the bottom fitted seal of deshydroxy furnace body 1, in bead 4, be set to place the platform of silica tube, the top of described deshydroxy furnace body 1 is provided with the lifting appliance 5 of the deshydroxy furnace body 1 of slinging.
First on a station of kiln car 2, by high temperature brick, silica tube is placed by array, after putting well, by the traction of slideway 3, change station, the kiln car 2 that silica tube is housed is pushed into the below of deshydroxy furnace body 1, deshydroxy furnace body 1 covers on the top of kiln car 2, by the bottom of deshydroxy furnace body 1 and bead 4 fitted seal of kiln car 2, guarantee the temperature in deshydroxy stove, greatly reduce heat loss, in deshydroxy stove, heat up gradually, keep after certain hour, naturally cool to after 200 ℃, deshydroxy is complete, deshydroxy furnace body 1 is mentioned by lifting appliance 5, silica tube after deshydroxy is pushed back to the initial station of kiln car 2, by crane, the good silica tube of deshydroxy is placed on vacant lot, vanning.
Claims (3)
1. a heavy caliber hydroxyl removal of quartz tube method, is characterized in that: heavy caliber silica tube is sent in deshydroxy stove, be at the uniform velocity warming up to 300 ℃, heat-up rate is 15～20 ℃/min, is then incubated 1～1.2 hour; At the uniform velocity be warming up to 700 ℃ by 10～15 ℃/min of speed again, rear insulation 1～1.2 hour; At the uniform velocity be warming up to 900 ℃ by 10～15 ℃/min of speed again, rear insulation 1～1.2 hour; At the uniform velocity be warming up to 1150 ℃ by 5～8 ℃/min of speed again, rear insulation 10～20 minutes; After power-off, carry out naturally cooling, in the time that temperature is cooled to below 200 ℃, come out of the stove, complete deshydroxy operation.
2. heavy caliber hydroxyl removal of quartz tube method according to claim 1, is characterized in that: in described deshydroxy process, keeping relative pressure in deshydroxy stove is 0～-10MPa.
3. a deshydroxy device that adopts above-mentioned heavy caliber hydroxyl removal of quartz tube method to use, it is characterized in that: comprise kiln car and cover on the deshydroxy furnace body on kiln car, on kiln car side by side be provided with two stations, be provided with the slideway of conversion station in the bottom of kiln car, on each station, be equipped with the bead with the bottom fitted seal of deshydroxy furnace body, in bead, be set to place the platform of silica tube, the top of described deshydroxy furnace body is provided with the lifting appliance of the deshydroxy furnace body of slinging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410063869.0A CN103771692B (en) | 2014-02-25 | 2014-02-25 | A kind of heavy caliber hydroxyl removal of quartz tube method and deshydroxy device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410063869.0A CN103771692B (en) | 2014-02-25 | 2014-02-25 | A kind of heavy caliber hydroxyl removal of quartz tube method and deshydroxy device |
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| CN103771692A true CN103771692A (en) | 2014-05-07 |
| CN103771692B CN103771692B (en) | 2016-01-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111087179A (en) * | 2019-12-03 | 2020-05-01 | 连云港海源石英制品有限公司 | Preparation method of colorless transparent low-hydroxyl ultraviolet-filtering quartz glass tube for car lamp |
| CN111362565A (en) * | 2020-02-24 | 2020-07-03 | 东海县奥博石英制品有限公司 | Large-diameter quartz tube expanding and shrinking method |
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| GB590358A (en) * | 1945-04-19 | 1947-07-15 | John Fallon | Improvements in heat treatment furnaces |
| CN2118961U (en) * | 1991-11-11 | 1992-10-14 | 哈尔滨工业窑炉联营公司 | Bell-jar annealing furnace |
| JPH05319848A (en) * | 1992-05-18 | 1993-12-03 | Tosoh Corp | Production of quartz glass |
| CN2240700Y (en) * | 1995-09-13 | 1996-11-20 | 李贵 | Bell-type loop wheel machine electric resistance furnace |
| JP2006193372A (en) * | 2005-01-13 | 2006-07-27 | Shin Etsu Chem Co Ltd | Dopant source for fluorine-doped quartz preform, feed pipe and inner surface treating method and method of manufacturing fluorine-doped quartz preform |
| CN1828208A (en) * | 2005-03-03 | 2006-09-06 | 日本碍子株式会社 | Intermittent type atmosphere stone |
| CN101050054A (en) * | 2007-03-28 | 2007-10-10 | 徐胜利 | Vacuum deshydroxy method for quartz glass cell |
| CN201704207U (en) * | 2010-04-21 | 2011-01-12 | 徐胜利 | Quartz tube dehydroxylation furnace access device |
-
2014
- 2014-02-25 CN CN201410063869.0A patent/CN103771692B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB590358A (en) * | 1945-04-19 | 1947-07-15 | John Fallon | Improvements in heat treatment furnaces |
| CN2118961U (en) * | 1991-11-11 | 1992-10-14 | 哈尔滨工业窑炉联营公司 | Bell-jar annealing furnace |
| JPH05319848A (en) * | 1992-05-18 | 1993-12-03 | Tosoh Corp | Production of quartz glass |
| CN2240700Y (en) * | 1995-09-13 | 1996-11-20 | 李贵 | Bell-type loop wheel machine electric resistance furnace |
| JP2006193372A (en) * | 2005-01-13 | 2006-07-27 | Shin Etsu Chem Co Ltd | Dopant source for fluorine-doped quartz preform, feed pipe and inner surface treating method and method of manufacturing fluorine-doped quartz preform |
| CN1828208A (en) * | 2005-03-03 | 2006-09-06 | 日本碍子株式会社 | Intermittent type atmosphere stone |
| CN101050054A (en) * | 2007-03-28 | 2007-10-10 | 徐胜利 | Vacuum deshydroxy method for quartz glass cell |
| CN201704207U (en) * | 2010-04-21 | 2011-01-12 | 徐胜利 | Quartz tube dehydroxylation furnace access device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111087179A (en) * | 2019-12-03 | 2020-05-01 | 连云港海源石英制品有限公司 | Preparation method of colorless transparent low-hydroxyl ultraviolet-filtering quartz glass tube for car lamp |
| CN111087179B (en) * | 2019-12-03 | 2021-09-21 | 连云港海源石英制品有限公司 | Preparation method of colorless transparent low-hydroxyl ultraviolet-filtering quartz glass tube for car lamp |
| CN111362565A (en) * | 2020-02-24 | 2020-07-03 | 东海县奥博石英制品有限公司 | Large-diameter quartz tube expanding and shrinking method |
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| CN103771692B (en) | 2016-01-13 |
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Address after: 222300 hump new area, Lianyungang, Jiangsu, Donghai County Patentee after: Jiangsu Hongwei quartz Technology Co., Ltd Address before: 222300 hump new area, Lianyungang, Jiangsu, Donghai County Patentee before: Lianyungang Hongwei Quarts Product Co., Ltd. |
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