CN109520285A - A kind of heat-processing equipment with circulation loop - Google Patents
A kind of heat-processing equipment with circulation loop Download PDFInfo
- Publication number
- CN109520285A CN109520285A CN201910000215.6A CN201910000215A CN109520285A CN 109520285 A CN109520285 A CN 109520285A CN 201910000215 A CN201910000215 A CN 201910000215A CN 109520285 A CN109520285 A CN 109520285A
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- CN
- China
- Prior art keywords
- gas
- heat
- powder
- affected zone
- heat affected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
- F27B5/14—Arrangements of heating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
- F27B5/16—Arrangements of air or gas supply devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
- F27B5/16—Arrangements of air or gas supply devices
- F27B2005/166—Means to circulate the atmosphere
Abstract
A kind of heat-processing equipment with circulation loop provided by the invention, the equipment is mainly used for the various powder body materials of high temperature process, the centrifugal field formed using the pyramidal structure in heat affected zone, realize the separation of powder and gas, gas carries powder after boosting and reenters heat affected zone, completes to recycle hot worked process；The equipment effectively increases the probability of gas-solid contact, significantly improves the effect of heat and mass, substantially increase the efficiency of hot procedure due to introducing the circulatory system.
Description
Technical field
The present invention relates to a kind of heat-processing equipment with circulation loop, and in particular to a kind of with material circulating system
Hot worked equipment is carried out to powder body material.
Background technique
For pulverulent material under particular atmosphere when hot-working, common operation is that the container equipped with powder is put into hot-working
In equipment, begun to warm up after being passed through the processing gas of certain atmosphere, in the process, powder is relatively stationary, and gas can be
It is opposing stationary to be also possible to flowing；In order to maintain the relatively stable of atmosphere, general gas flow is flowing, i.e., with certain stream
Amount enters, while flowing out heating region with certain flow.When gas is in the state of relative flow, the flowing velocity one of gas
As it is lower, with guarantee do not make powder raise and with gas flow out heating region and cause loss of material.Such operating defect exists
In, the gas molecule that surface layer powder below can only enter with diffusion interacts, so, particle and gas in powder
The mixed degree of body contact is very limited, and if forming the product of new flowable state, these products between powder and gas
Also it is not easy to escape from powder, to influence entire hot worked uniformity and completeness.
Summary of the invention
The present invention provides a kind of heat-processing equipment with circulation loop, it is mainly used in flowing atmosphere to powder body material
Carry out hot-working.
This heat-processing equipment provided by the invention is mainly made of three modules, i.e. heating module, gas solid separation module
And loop module.Gas solid separation module is heat affected zone, is by the structure composition of similar cyclone separator；Heating module is by gas-solid
Separation module wraps up wherein, and the module heated to it, including electrical heating elements, thermal insulation material, corresponding temperature prison
Survey control unit etc.；In loop module, boosting of the gas phase flowed out from heat affected zone by equipment such as blowers, boost in pressure
To certain numerical value, gas solid separation module bottom is entered, carries and is flowed back into again after being deposited on solid phase powder therein
Enter experience in gas solid separation module and is looped back and forth like this operation by hot-working.
A kind of heat-processing equipment with circulation loop provided by the invention, structure composition schematic diagram as shown in Figure 1, its
In,
C-1 is the upper cylindrical shell portion of gas solid separation module, and the gas for carrying powder is cut from the entrance of the cylinder side
To inflow, the gas phase after separation is flowed out by the gas outlet of the cylinder upper end；
C-2 is the inverted conical shape shell portion of gas solid separation module, and the feature of the part-structure will form a centrifugal field, solid
Powder granule and gas can be separated in the centrifugal field due to density contrast, and the bigger powder granule of density can move downward
The alphabetical S of arrow side (indicate solid phase), and the small gas of density moves upwards (the alphabetical G on arrow side indicates gas phase)；
C-3 is the cylindrical collection area of gas solid separation module bottom, collects the powder granule to settle down from C-2 outlet at bottom；
T-1 is gas flow pipe line, from the gas of the outlet outflow of the C-1 of gas solid separation module, is also possible to by blower P(
Others boosting air feed equipments, such as steel cylinder gas) boosting, into C-3；
T-2 is the gas-solid mixing body flow line (S/G indicates gas-solid mixing) for carrying powder, and the gas into C-3 carries powder
After flow out, flow back into C-1；
R is heating module, is heated using heating element, realizes hot-working to powder, using thermal insulation material by heating element, C-
1 and C-2 carries out wrapping and encapsulating, realizes heat preservation and defencive function.
When being processed using this heat-processing equipment with circulation loop provided by the invention to powder body material, general behaviour
Make process are as follows: C-3 is added in powder body material, after system is airtight, starting blower (or other boosting air feed equipments), to entire logistics
Access after stable operation, starts heating module, adds according to the hot-working program of setting in gas solid separation module and loop module
Work powder is to terminating.
Using heat-processing equipment provided by the invention, the homogeneity and repetition of powder body material converted products can effectively improve
Property, particularly with the high powder body material of processing temperature, due to introducing loop module, so that the contact between powder and gas is non-
Often sufficiently, the resistance of heat transfer and mass transfer between gas-solid phase greatly reduces, and the rate of whole heat transfer and mass transfer greatly improves, significantly
Reduce the powder sintering occurred in conventional processes, situations such as product homogeneity is poor odds, greatly shorten simultaneously
The time of hot procedure, the processing quality of powder body material has been obviously improved it.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Specific embodiment
Below in conjunction with embodiment, the present invention is described further, and the following examples are only used for explaining in detail explanation
The present invention does not limit the scope of the invention in any way.
Embodiment 1
By the commercially available activated alumina powder of 200g (2 μm of average grain diameter, BET specific surface area 170m2/ g) it is put into C-3, airtight system
After system, start blower P, adjustment fan outlet pressure gauge is 20kPa, and at the gas-solid mixing feed entrance of C-1, gas flow is controlled
It is 30 liters/min；After system is stablized, start heating module, setting heating schedule is, with the rate of 10K/min by C-1 and C-2
In temperature from room temperature rise to 650 DEG C, constant temperature 4 hours after stop heating, after the temperature in C-1 and C-2 is down to 100 DEG C, close
Blower is closed, takes out powder after system cooled to room temperature, measures 3 μm of average grain diameter, BET specific surface area 132m2/g。
Comparative example 1
The activated alumina powder 200g of attribute in the same manner as in Example 1 is put into Muffle furnace, the air of flowing, air are passed through
30 liters/min of flow, start heating module, setting heating schedule is, with the rate of 10K/min by the temperature in Muffle furnace from room
Temperature rise to stopping after 650 DEG C, constant temperature 4 hours is heated, and is taken out powder after system cooled to room temperature, is measured 5 μm of average grain diameter,
BET specific surface area 103m2/g。
Pass through the data in embodiment and comparative example, it is known that, it is set using the hot-working provided by the invention with circulation loop
Standby, by mutually synthermal, after the processing of identical heating time, obtained powder has than using traditional heat-processing equipment to obtain
The higher BET surface area of powder and smaller partial size.
Claims (4)
1. a kind of heat-processing equipment with circulation loop, the hot procedure for being carried out to powder body material, which is characterized in that
The cavity lower part of heat affected zone is in inverted conical shape, carry powder gas enter heat affected zone after, gas solid separation occurs, air-flow transports upwards
Dynamic outflow heat affected zone, powder granule move downward out heat affected zone, and the gas of outflow carries powder after booster apparatus boosts
Particle reenters heat affected zone, completes the circulation of material；The heating equipment includes heating module, the gas solid separation mould in heat affected zone
Loop module these three modules outside block and heat affected zone.
2. a kind of heat-processing equipment with circulation loop according to claim 1, which is characterized in that gas solid separation module
Top be cylindrical tube, the gas for carrying powder tangentially flows by the entrance of the cylinder side, and the gas phase after separation is by this
It flows out the gas outlet of portion upper end；The lower part of gas solid separation module is in inverted conical shape, and the bigger powder granule of density moves downward, close
Small gas is spent to move upwards.
3. a kind of heat-processing equipment with circulation loop according to claim 1, which is characterized in that booster apparatus can be with
It is blower, is also possible to the steel cylinder gas source with pressure.
4. a kind of heat-processing equipment with circulation loop according to claim 1, which is characterized in that heating module package
In the outside of gas solid separation module, using electrical heating elements heat supply, heating element and gas-solid splitting die are encapsulated using thermal insulation material
Block forms heat affected zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910000215.6A CN109520285A (en) | 2019-01-01 | 2019-01-01 | A kind of heat-processing equipment with circulation loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910000215.6A CN109520285A (en) | 2019-01-01 | 2019-01-01 | A kind of heat-processing equipment with circulation loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109520285A true CN109520285A (en) | 2019-03-26 |
Family
ID=65797658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910000215.6A Pending CN109520285A (en) | 2019-01-01 | 2019-01-01 | A kind of heat-processing equipment with circulation loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109520285A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1146233A (en) * | 1955-03-19 | 1957-11-07 | Ruhrchemie Ag | Process and device for treatment, and in particular for drying powdery materials |
| US4236318A (en) * | 1979-03-13 | 1980-12-02 | Salem Corporation | Methods and apparatus for heating particulate material |
| CN101049580A (en) * | 2007-04-30 | 2007-10-10 | 北京航空航天大学 | Technique and equipment for preparing Nano granules in high purity by using method of comminution by gas stream |
| US20100205821A1 (en) * | 2007-08-03 | 2010-08-19 | Kabushiki Kaisha Matsui Seisakusho | Method of dehumidifying and drying powdered or granular material and system for dehumidifying and drying powdered or granular material |
| CN209386776U (en) * | 2019-01-01 | 2019-09-13 | 南京锐晶纳米科技有限公司 | A kind of heat-processing equipment with circulation loop |
-
2019
- 2019-01-01 CN CN201910000215.6A patent/CN109520285A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1146233A (en) * | 1955-03-19 | 1957-11-07 | Ruhrchemie Ag | Process and device for treatment, and in particular for drying powdery materials |
| US4236318A (en) * | 1979-03-13 | 1980-12-02 | Salem Corporation | Methods and apparatus for heating particulate material |
| CN101049580A (en) * | 2007-04-30 | 2007-10-10 | 北京航空航天大学 | Technique and equipment for preparing Nano granules in high purity by using method of comminution by gas stream |
| US20100205821A1 (en) * | 2007-08-03 | 2010-08-19 | Kabushiki Kaisha Matsui Seisakusho | Method of dehumidifying and drying powdered or granular material and system for dehumidifying and drying powdered or granular material |
| CN209386776U (en) * | 2019-01-01 | 2019-09-13 | 南京锐晶纳米科技有限公司 | A kind of heat-processing equipment with circulation loop |
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