CN2312918Y - Compression-resising stable-flow feeding device - Google Patents
Compression-resising stable-flow feeding device Download PDFInfo
- Publication number
- CN2312918Y CN2312918Y CN 97231189 CN97231189U CN2312918Y CN 2312918 Y CN2312918 Y CN 2312918Y CN 97231189 CN97231189 CN 97231189 CN 97231189 U CN97231189 U CN 97231189U CN 2312918 Y CN2312918 Y CN 2312918Y
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- pressure vessel
- funnel
- resistance
- feeder
- shape
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Abstract
The utility model relates to an appliance for conveying powder body from a low pressure container to a high pressure container of chemical reactors. The utility model is made of four kinds of hoppers with the half conical degree of 1-20DEG. The utility model ensures high and constant mean flow quantity of the powder body during transmission. Having the advantage of simple structure, the utility model can efficiently control the mean flow quality of the powder body, which is in favor of the normal and stable operation of the chemical reactors and powder body conveying.
Description
The utility model relates to the equipment of a kind of chemical reactor and powder transportation realization stable operation, particularly relates to a kind of resistance to compression current stabilization feeder that is used for the chemical industry powder conveying.
The structure of resistance to compression current stabilization feeder is a kind of confining part that places the low pressure vessel bottom, its main effect be fine powder from low pressure vessel with the constant-quality flow volume delivery to high pressure vessel, be effective equipment of realizing stable operation in chemical reactor and the powder field.
Resistance to compression feeder in the past, as " orifice valve ", (at Zhang Ji's space, " powder of moving bed standpipe flows ", Australia elder brother scholar Nanjing University learns in the nineteen ninety Ph D dissertation and describes in detail), the mass flow rate that i.e. perforate valve on flat board, its shortcoming are powders by orifice valve increases with the pressure of high pressure vessel and reduces gradually; Another kind of resistance to compression feeder such as L valve, promptly the pipe by L shaped formula connects between high pressure vessel and base pressure container, and feed loosening gas in the corner of L and be called " standpipe feature " so that regulate the powder quality flow: (the up big and down small V-arrangement formula adapter bonnet that promptly passes through between high pressure vessel and low pressure vessel connects to also have a kind of V valve, and feed loosening gas so that regulate the powder quality flow in the bottom) and the J valve (promptly between high pressure vessel and low pressure vessel, combine being connected of form such as J-shaped formula by V-arrangement formula adapter bonnet and L shaped pipe, and feed loosening gas so that regulate powder quality flow etc.) in the bottom, for this kind equipment, its shortcoming is that the powder quality flow is limited by appointed condition not only, and, make mass flow rate control relative complex along with the tolerance of loosening gas changes.
The purpose of this utility model is to overcome the shortcoming and defect of prior art, promptly overcomes to exist between high pressure vessel and the low pressure vessel under the pressure reduction condition, and powder reduces feature by the mass flow rate of orifice valve; And the characteristics of the loosening gas of adding such as powder L valve, V valve and J valve, and the complexity of the control mass flow rate of bringing has high and constant advantage feature in order to guarantee powder powder quality flow in conveying, thus a kind of resistance to compression current stabilization feeder is provided.
The purpose of this utility model is finished like this:
The utility model employing half cone degree is 1 °-20 ° a different shape funnel, be installed on the low pressure vessel bottom, the shape of funnel top is identical with low pressure vessel with cross-sectional area, and the funnel below is connected on the high pressure vessel [3] with the flange that the shape same inner diameter is slightly larger than the aperture internal diameter, and setting pressure sensor [4] is monitored wandering of powder above funnel.Wherein funnel designs taper shape, pyramid, wedge shape and four kinds of resistance to compression current stabilizations of chisel shape feeder.
Advantage of the present utility model is:
The resistance to compression current stabilization feeder that the utility model provides, make full use of the pressure reduction between high pressure vessel and the low pressure vessel in use, the powder quality flow only is subjected to funnel aperture size constraint, and need not to add loosening gas, has guaranteed that the powder quality flow has height and invariant feature.Use the utility model resistance to compression current stabilization feeder can be simply and also actv. control the powder granule mean mass flux, help the normal running of chemical reactor and powder conveying.
Below in conjunction with accompanying drawing and embodiment the utility model is further said in detail:
Fig. 1 the utility model running condition figure.
Fig. 2 is conical resistance to compression current stabilization feeder.
Fig. 3 is a pyramid resistance to compression current stabilization feeder.
Fig. 4 is a wedge shape resistance to compression current stabilization feeder.
Fig. 5 is a chisel shape resistance to compression current stabilization feeder.
Embodiment 1: press the conical resistance to compression current stabilization feeder that Fig. 2 makes
Making the half cone degree with organism glass is 10.2 ° of conical funnels, as shown in Figure 2, resistance to compression current stabilization feeder [2] is installed on low pressure vessel [1] bottom, and its upper end is identical with 90 millimeters of the diameter phi of low pressure vessel, and the orifice diameter of lower end is 12.5 millimeters of φ.Measure the average quality flow rate of FCC catalyst powder.
When powder is wandered high pressure vessel from low pressure vessel by resistance to compression current stabilization feeder, occur pressure control operational zone (the powder quality flow increases with the gaseous tension of high pressure vessel and reduces), bubble control operation district (the powder quality flow increases with the gaseous tension of high pressure vessel), aeroembolism control operation district (the powder quality flow not only shows height stablize, and do not increase change) and material envelope successively and distinguish (the powder quality flow is zero) with the gaseous tension of high pressure vessel.Wherein, when the operation of resistance to compression current stabilization feeder is in the aeroembolism control area, can realize high and stable powder quality flow target, its powder quality flow satisfies the Beverloo equation
Wherein, G
sBe powder quality flow (kg/s),
d
pBe powder granule mean diameter (m),
ρ
bBe the bulk density (kg/s) of powder,
D is aperture width (m).And being pressure sensor [4], the fluctuation of pressure feature of the high amplitude of low frequency in aeroembolism control operation district controls prose style free from parallelism particle proper flow basis.Embodiment 2: press the pyramid resistance to compression current stabilization feeder that Fig. 3 makes
Making the half cone degree with organism glass is 10.2 ° of pyramid funnels, as shown in Figure 3, resistance to compression current stabilization feeder [2] is installed on low pressure vessel [1] bottom, and its upper end is identical with 90 millimeters of the diameter phi of low pressure vessel, and the aperture hydraulic diameter of lower end is 12.5 millimeters of φ.Embodiment 3: press the wedge shape resistance to compression current stabilization feeder that Fig. 4 makes
Making the half cone degree with organism glass is 10.2 ° of wedge shape funnels, as shown in Figure 4, resistance to compression current stabilization feeder [2] is installed on low pressure vessel [1] bottom, and its upper end is identical with 90 millimeters of the diameter phi of low pressure vessel, and the aperture hydraulic diameter of lower end is 12.5 millimeters of φ.Embodiment 4: press the chisel shape resistance to compression current stabilization feeder that Fig. 5 makes
Making the half cone degree with organism glass is 10.2 ° of chisel shape funnels, as shown in Figure 5, resistance to compression current stabilization feeder [2] is installed on low pressure vessel [1] bottom, and its upper end is identical with 90 millimeters of the diameter phi of low pressure vessel, and the aperture hydraulic diameter of lower end is 12.5 millimeters of φ.
Claims (2)
1. resistance to compression current stabilization feeder, it is characterized in that: being installed on low pressure vessel [1] bottom and having the half cone degree is 1 ° to 20 ° funnel [2], the shape of funnel top is identical with low pressure vessel with cross-sectional area, square shape is identical with the flange orifice shapes under the funnel, funnel below internal diameter leakproof fit is fixed on the flange that is connected in high pressure vessel [3] setting pressure sensor [4] above funnel.
2. resistance to compression current stabilization feeder according to claim 1, it is characterized in that: the shape of described funnel comprises: taper shape, pyramid, wedge shape, chisel shape funnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97231189 CN2312918Y (en) | 1997-12-30 | 1997-12-30 | Compression-resising stable-flow feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97231189 CN2312918Y (en) | 1997-12-30 | 1997-12-30 | Compression-resising stable-flow feeding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2312918Y true CN2312918Y (en) | 1999-04-07 |
Family
ID=33943463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97231189 Expired - Fee Related CN2312918Y (en) | 1997-12-30 | 1997-12-30 | Compression-resising stable-flow feeding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2312918Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3055889A1 (en) * | 2016-09-14 | 2018-03-16 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | SYSTEM FOR DOSING AND INJECTING GRAVITY OF DENSE PHASE POWDERS |
-
1997
- 1997-12-30 CN CN 97231189 patent/CN2312918Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3055889A1 (en) * | 2016-09-14 | 2018-03-16 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | SYSTEM FOR DOSING AND INJECTING GRAVITY OF DENSE PHASE POWDERS |
| WO2018050668A1 (en) * | 2016-09-14 | 2018-03-22 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | System for the metering and gravity-based injection of powders in dense phase |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |