CN202400855U - Bell-hood type silicon tetrachloride heating furnace - Google Patents
Bell-hood type silicon tetrachloride heating furnace Download PDFInfo
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- CN202400855U CN202400855U CN2011203381331U CN201120338133U CN202400855U CN 202400855 U CN202400855 U CN 202400855U CN 2011203381331 U CN2011203381331 U CN 2011203381331U CN 201120338133 U CN201120338133 U CN 201120338133U CN 202400855 U CN202400855 U CN 202400855U
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- bell
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- silicon tetrachloride
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The utility model provides a bell-hood type silicon tetrachloride heating furnace which comprises a bell-hood type furnace shell, wherein an anti-explosion temperature measuring device and an insulting furnace lining bracket are installed on the bell-hood type furnace shell; a resistor heating belt is arranged on the insulting furnace lining bracket; the resistor heating belt is connected with a control cabinet and an anti-explosion junction box outside the furnace through a binding post; a temperature signal is transmitted to the control cabinet through the anti-explosion temperature measuring device; the resistor heating belt is subjected to electrification control through the control cabinet according to the temperature change in the furnace; the furnace is internally provided with a heat exchange coil; the heat exchange coil is supported and fixed in the furnace through the coil; a coil inlet and a coil outlet are arranged at the top part of the bell-hood type furnace; a process medium is fed from the coil inlet and is discharged from the coil outlet after being heated in the furnace. The bell-hood type silicon tetrachloride heating furnace provided by the utility model is simple in structure, uniform in gas heating, energy-saving and anti-explosive as well as stable and reliable; and the safe and stable running of production is guaranteed.
Description
Technical field
The utility model relates to the gas heating field, particularly a kind of bell-jar process furnace that is used to add hot hydrogen or silicon tetrachloride.
Background technology
Along with increasingly sharpening of world energy sources crisis is more and more tighter with requirement on environmental protection; Renewable Energy Development and clean energy are all made great efforts in countries in the world; Wherein sun power is the most wide new forms of energy of application prospect, and what its starting material polysilicon extensively adopted at present is improvement Siemens Method production technique, but this technology can produce a large amount of silicon tetrachloride as by-product; As can not get effective comprehensive treating process and application, can cause severe contamination to environment.In several kinds of existing silicon tetrachloride treatment process, cold hydrogenation technology energy consumption is low, the unitary device processing power is big, and less investment, the characteristics that cost is low have determined it will progressively become main application direction.
The cold hydrogenation technology of silicon tetrachloride; Be that silicon tetrachloride, hydrogen, metallurgical grade silica flour are together reacted in fluidized-bed reactor; Temperature of reaction is 400 ~ 600 ℃, because temperature of reaction is higher, the medium that needs heating is again the hydrogen and the silicon tetrachloride of inflammable and explosive height harm; So type of heating and equipment are the keys of whole process flow; Not only to guarantee to be heated to reactant gases the temperature of regulation, reduce the influence that the fouling of chlorosilane gas in heat-processed produces, but also need satisfy requirement of explosion proof.
The type of heating of current cold hydrogenation technology all adopts electric heater to heat; Principle is that the processing medium of initial temperature gets into rotatable heater housing inside through pipeline, takes away a large amount of heats that cluster type tubular electrothermal element surface gives out, and is met the processing medium of technological temperature requirement in the electric heater outlet; This type of heating exists gas heating inhomogeneous; Easy scale formation, easy local superheating, defective such as work-ing life is long; Can cause the production cycle unstable, uncontrollable, these problems are perplexing the large-scale promotion of cold hydrogenation technology always.
Present patent application bell-jar silicon tetrachloride process furnace adopts the resistive heating band through radiogenic heat and transmission of heat by convection; The stove inner coil pipe is heated, and the processing medium in the coil pipe is given in conduction, thereby reaches the temperature out that needs; Adopt this type of heating can reach homogeneous heating; Safety anti-explosive cuts down the consumption of energy, purposes such as long service life.
The utility model content
The purpose of the utility model is that a kind of homogeneous heating, safety anti-explosive, energy consumption are low, the bell-jar silicon tetrachloride process furnace of long service life in order to provide.
In order to realize above purpose; The utility model discloses a kind of bell-jar silicon tetrachloride process furnace; Comprise the bell-jar furnace shell; Explosion-proof type temperature measuring equipment and insulation furnace lining support are installed on the said bell-jar furnace shell, and said insulation furnace lining support is provided with the resistive heating band, and said resistive heating band is connected with outer anti-explosion terminal box and the housing of stove through terminal stud; Through the explosion-proof type temperature measuring equipment temperature signal is transferred to housing, according to temperature variation in the stove resistive heating is brought into the electric control that works through housing; Comprise heat exchange coil in the stove, said heat exchange coil is fixed in the stove through coiled tube supports; Said bell jar furnace roof portion is provided with coil pipe import and coil pipe outlet, and processing medium gets into from the coil pipe import, after in stove, being heated, sees off from the coil pipe outlet.
As a kind of preferred version of the utility model, said bell-jar furnace shell inwall is provided with the burner hearth thermal insulation layer, and said insulation furnace lining support passes the burner hearth thermal insulation layer.The burner hearth thermal insulation layer stops heat to distribute energy efficient.
As a kind of preferred version of the utility model, said heat exchange coil is a spiral.
As a kind of preferred version of the utility model, said bell jar furnace bottom has nitrogen inlet, and the body of heater top has nitrogen outlet.Feed nitrogen in the furnace chamber and protect, nitrogen inlet feeds nitrogen from the bottom, from top nitrogen outlet emptying, even the interior processing medium of coil pipe has leakage like this, also can not cause burning at once or blast.
As a kind of preferred version of the utility model, said heat exchange coil inboard is provided with ventilating duct, and the below is provided with diversion seat in the stove, and said heat exchange coil is fixed on the diversion seat through coiled tube supports.
As a kind of preferred version of the utility model, said bell jar furnace roof portion is provided with explosion-proof circulating fan, and said explosion-proof circulating fan outside is equipped with the recirculating air hood, feeds nitrogen in the recirculating air hood and carries out explosive-proof protector.
In order to improve heat-transfer effect, ON cycle blower fan during heating makes through ventilating duct and bottom diversion seat that nitrogen circulates from top to bottom in the stove, makes in the stove temperature more even.
As a kind of preferred version of the utility model, said bell jar furnace roof portion is provided with venting, and when furnace pressure was excessive, the top cover of venting will be held up pressure release, make stove have certain explosion prevention function like this.
As a kind of preferred version of the utility model, said bell jar stove adopts placed in-line mode to connect, and realizes the gas step is heated.
The principle of the utility model is behind the resistive heating band heating power of bell-jar silicon tetrachloride process furnace, through radiation and nitrogen transmission of heat by convection; Heating spiral heat exchange coil; Processing medium is heated in stove internal screw heat exchange coil, and when temperature was lower than design temperature in the stove, the resistive heating band will heating power; Temperature reaches design temperature when above in stove, and just outage stops heating.
The utility model has nitrogen outlet, nitrogen inlet at furnace roof and furnace bottom; Processing medium gets into from the coil pipe import; After in stove, being heated, see off, feed nitrogen in the furnace chamber and protect from the coil pipe outlet; Even processing medium has leakage in the coil pipe like this, can not cause burning at once or blast yet.
The utility model is provided with explosion-proof circulating fan, recirculating air hood, ventilating duct, bottom diversion seat, makes heat-transfer effect be improved, and makes stable more uniform and stable in the stove.The design of the venting of bell jar furnace roof portion makes stove have certain explosion-proof ability.
To reach reaction after being heated temperature required for processing medium, and improve process furnace work-ing life, can adopt the placed in-line mode of many table clocks bell-type silicon tetrachloride process furnace, realizes the gas step is heated.
The utility model bell-jar silicon tetrachloride process furnace homogeneous heating, energy-saving explosion-proof, reliable and stable, cut down the consumption of energy, can effectively increase the service life.
Description of drawings
Fig. 1 is the structural representation of the utility model bell-jar silicon tetrachloride process furnace.
Fig. 2 is the sectional view of the utility model bell-jar silicon tetrachloride process furnace.
Fig. 3 is the vertical view of the utility model bell-jar silicon tetrachloride process furnace.
| 1-bell-jar furnace shell | The 2-terminal stud | The 3-anti-explosion terminal box |
| 4-burner hearth thermal insulation layer | 5-insulation furnace lining support | 6-resistive heating band |
| The import of 7-coil pipe | The 8-nitrogen outlet | 9-recirculating air hood |
| The 10-explosion-proof circulating fan | The outlet of 11-coil pipe | The 12-ventilating duct |
| 13-spiral heat exchange coil | 14-explosion-proof type temperature measuring equipment | 15-bottom diversion seat |
| The 16-nitrogen inlet | The 17-coiled tube supports | The 18-venting |
Embodiment
Below in conjunction with specific embodiment the utility model bell-jar silicon tetrachloride process furnace is done further detailed description.
As shown in Figure 1, the utility model bell-jar silicon tetrachloride process furnace comprises that bell-jar furnace shell 1, bell-jar furnace shell 1 inboard are provided with burner hearth thermal insulation layer 4, stops heat to distribute energy efficient; The insulation furnace lining support of installing on the bell-jar furnace shell 15 passes burner hearth thermal insulation layer 4, is used for fixing resistive heating band 6, and resistive heating band 6 is connected with outer anti-explosion terminal box 3 and the housing of stove through terminal stud 2.The explosion-proof type temperature measuring equipment of installing on the bell-jar furnace shell 1 14 passes burner hearth thermal insulation layer 4; Stretch in the stove; In order to detect the temperature in the stove, detected temperature signal is transferred to the outer housing of stove, housing according to temperature variation in the stove to resistive heating band 6 control of switching on.
Be provided with spiral heat exchange coil 13 in the stove, and be placed on the diversion seat 15 of bottom through coiled tube supports 17, processing medium gets into from the coil pipe import 7 of bell jar furnace roof portion, after in stove, being heated, sees off from the coil pipe outlet 11 of bell jar furnace roof portion.Bell jar stove top and bottom is respectively equipped with nitrogen outlet 8, nitrogen inlet 16, is used for feeding nitrogen protection, even processing medium has leakage in the coil pipe, also can not cause burning at once or blast.Bell-jar furnace shell 1 top is provided with explosion-proof circulating fan 10, and the explosion-proof circulating fan 10 outside recirculating air hoods 9 of installing feed nitrogen and carry out explosive-proof protector.Be provided with ventilating duct 12 in spiral heat exchange coil 13 inboards, in order to improve heat-transfer effect, ON cycle blower fan 10 during heating makes through ventilating duct 12 and bottom diversion seat 15 that nitrogen circulates from top to bottom in the stove, and temperature is more even in the stove.Bell jar furnace roof portion also is provided with venting 18, and when furnace pressure was excessive, the top cover of venting will be held up pressure release, makes stove have certain explosion prevention function like this.
During actual motion, behind resistive heating band 6 heating powers of bell-jar silicon tetrachloride process furnace, through radiation and nitrogen transmission of heat by convection; Heating spiral heat exchange coil 13; Processing medium is heated in stove internal screw heat exchange coil 13, and when temperature was lower than design temperature in the stove, resistive heating band 6 will heating power; Temperature reaches design temperature when above in stove, and just outage stops heating.To reach reaction after being heated temperature required for processing medium, and improve process furnace work-ing life, can adopt the placed in-line mode of many table clocks bell-type silicon tetrachloride process furnace, realizes the gas step is heated.
Claims (9)
1. bell-jar silicon tetrachloride process furnace; Comprise the bell-jar furnace shell; Explosion-proof type temperature measuring equipment and insulation furnace lining support are installed on the said bell-jar furnace shell; Said insulation furnace lining support is provided with the resistive heating band, and said resistive heating band is connected with outer anti-explosion terminal box and the housing of stove through terminal stud;
Heat exchange coil, said heat exchange coil is fixed in the stove through coiled tube supports;
Said bell jar furnace roof portion is provided with coil pipe import and coil pipe outlet.
2. bell-jar silicon tetrachloride process furnace according to claim 1 is characterized in that: said bell-jar furnace shell inwall is provided with the burner hearth thermal insulation layer, and said insulation furnace lining support passes the burner hearth thermal insulation layer.
3. bell-jar silicon tetrachloride process furnace according to claim 1 is characterized in that: said heat exchange coil is a spiral.
4. bell-jar silicon tetrachloride process furnace according to claim 1 is characterized in that: said bell jar furnace bottom has nitrogen inlet, and the body of heater top has nitrogen outlet.
5. bell-jar silicon tetrachloride process furnace according to claim 1 is characterized in that: said heat exchange coil inboard is provided with ventilating duct, and the below is provided with diversion seat in the stove, and said heat exchange coil is fixed on the diversion seat through coiled tube supports.
6. bell-jar silicon tetrachloride process furnace according to claim 1 is characterized in that: said bell jar furnace roof portion is provided with explosion-proof circulating fan.
7. bell-jar silicon tetrachloride process furnace according to claim 6 is characterized in that: said explosion-proof circulating fan outside is equipped with the recirculating air hood.
8. bell-jar silicon tetrachloride process furnace according to claim 1 is characterized in that: said bell jar furnace roof portion is provided with venting.
9. according to arbitrary described bell-jar silicon tetrachloride process furnace in the claim 1 to 8, it is characterized in that: said bell jar stove adopts placed in-line mode to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203381331U CN202400855U (en) | 2011-09-09 | 2011-09-09 | Bell-hood type silicon tetrachloride heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203381331U CN202400855U (en) | 2011-09-09 | 2011-09-09 | Bell-hood type silicon tetrachloride heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202400855U true CN202400855U (en) | 2012-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203381331U Withdrawn - After Issue CN202400855U (en) | 2011-09-09 | 2011-09-09 | Bell-hood type silicon tetrachloride heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202400855U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102320611A (en) * | 2011-09-09 | 2012-01-18 | 上海森松化工成套装备有限公司 | Bell jar type silicon tetrachloride heating furnace |
-
2011
- 2011-09-09 CN CN2011203381331U patent/CN202400855U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102320611A (en) * | 2011-09-09 | 2012-01-18 | 上海森松化工成套装备有限公司 | Bell jar type silicon tetrachloride heating furnace |
| CN102320611B (en) * | 2011-09-09 | 2013-04-17 | 上海森松化工成套装备有限公司 | Bell jar type silicon tetrachloride heating furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120829 Effective date of abandoning: 20130417 |
|
| RGAV | Abandon patent right to avoid regrant |