CN210543397U - Liquid distributor for inert particle fluidized bed - Google Patents
Liquid distributor for inert particle fluidized bed Download PDFInfo
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- CN210543397U CN210543397U CN201921430893.8U CN201921430893U CN210543397U CN 210543397 U CN210543397 U CN 210543397U CN 201921430893 U CN201921430893 U CN 201921430893U CN 210543397 U CN210543397 U CN 210543397U
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- fluidized bed
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- liquid distributor
- inert particle
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Abstract
The utility model discloses an inert particle is liquid distributor for fluidized bed, this liquid distributor include inlet pipe and distribution pipe, distribution pipe one end is connected with the inlet pipe, and the other end seals, and the distribution pipe is established to circular cone spiral coil tubular structure, and even interval sets up a plurality of mouths that spray on the distribution pipe, and begins from feed inlet one end, and the diameter that sprays the mouth is grow gradually from a little. The utility model discloses a liquid distributor installs in the latter half of inert particle fluidized bed, and is located the top of inert particle and distributing plate, and liquid material is by getting into the distribution pipe through the inlet pipe, then distributes through spraying the mouth, and it can effectively improve liquid material's dispersion degree, improves inert particle's collision efficiency, effectively reduces the caking, glues the emergence of phenomenons such as wall, and then improves inert particle fluidized bed's drying efficiency.
Description
Technical Field
The utility model relates to a liquid distributor for inert particle fluidized bed belongs to chemical industry mass transfer equipment manufacturing and designing technical field.
Background
The inert particle fluidized bed is used as drying equipment with simple structure, small occupied area and high heat transfer efficiency, and is widely applied to the fields of food, medicine, chemical industry and the like. Among the prior art, inert particle fluidized bed feeding is mostly direct feed, and liquid material spouts in the fluidized bed middle part more, does not carry out evenly distributed, causes the material to bond the blocking more likely, perhaps glues on the bed wall, the dead bed even, also the effect of full play inert particle simultaneously, and tubular liquid distributor develops comparatively ripe as traditional liquid distributor, and the passageway that provides is also bigger, sprays a little many, and the installation is dismantled conveniently.
The fluidized bed of inert particles requires the use of inert particles at a lower feed position than other fluidized beds, and when smaller inert particles are used, the fluidized inert particles may block the feed inlet.
Along with the continuous extension of application, the component of inert particle fluidized bed should also be changed because of the trend, in order to reach good drying effect, chinese utility model patent with patent number CN2785674Y discloses establish the raw materials liquid evaporation plant who has liquid distributor in the fluidized bed, with the supporting combined type of the mode that liquid person in charge is linked together with a plurality of liquid branch pipes and get hot fluidized bed reactor, the evaporation heat that makes whole liquid all is used for taking out the reaction heat, the small investment, output is high, and is easy and simple to handle, but this utility model fails to solve the problem that the distribution pipe easily blockked up betterly, long-term operation, piling up in the junction of being responsible for between and the distribution pipe can increase gradually, influence to continuous operation is great.
SUMMERY OF THE UTILITY MODEL
To the inhomogeneous and feed inlet jam scheduling problem of inert particle fluidized bed feeding, the utility model provides a liquid distributor for inert particle fluidized bed.
A liquid distributor for inert particle fluidized bed, its characterized in that includes inlet pipe and distribution pipe, distribution pipe one end is connected with the inlet pipe, and the other end seals, and the distribution pipe is established to circular cone screw type coil tubular structure, and even interval sets up a plurality of mouths that spray on the distribution pipe, and begins from feed inlet one end, and the diameter that sprays the mouth is crescent from beginning to end.
The liquid distributor for the inert particle fluidized bed is characterized in that the diameter of a spraying opening is 0.5 mm-5 mm.
The liquid distributor for the inert particle fluidized bed is characterized in that when the diameter of a spraying opening is larger than 2mm, a wire mesh is arranged on the spraying opening.
The liquid distributor for the inert particle fluidized bed is characterized in that 1-2 openings are formed in each circle of coil pipe section of the distribution pipe, and branch pipes with plugs are arranged on the openings to form a material buffer area so as to prevent material blockage at the bending part of a ring pipe.
The liquid distributor for the inert particle fluidized bed is characterized in that the three-dimensional rectangular coordinate system equation of the conical spiral coil is
，
Wherein z ∈ [0, H ]]Diameter of pole
where a is the pitch of the spiral, α is the half angle of the apex of the spiral, θ is the angle of rotation on the horizontal plane, and H is the height of the cone.
the liquid distributor for the inert particle fluidized bed is characterized in that the value range of α is 30-60 degrees.
The utility model discloses an adopt the liquid distributor for the inert particle fluidized bed that above-mentioned technique obtained, its simple structure, convenient operation as a liquid distributor for the inert particle fluidized bed, can improve the dispersion degree of liquid material, improves the collision efficiency of inert particle, effectively reduces the caking, glues the emergence of phenomenons such as wall, prevents that inert particle from blockking up and spraying the mouth, and then improves the drying efficiency of inert particle fluidized bed, is favorable to the continuous operation among the industrial production.
Drawings
Fig. 1 is a schematic perspective view of a liquid distributor according to the present invention;
fig. 2 is a schematic view of the installation structure of the present invention.
In the figure: 1-a feed inlet; 2-distribution pipes; 3-a spray opening; 4-a tee joint; 5-wire netting, 6-inert particle fluidized bed, 7-inert particles and 8-distribution plate.
Detailed Description
The invention is further described with reference to the drawings and examples, but the scope of the invention is not limited thereto.
As shown in fig. 1 and 2, the liquid distributor for an inert particle fluidized bed of the present invention is installed on an inert particle fluidized bed 6, and comprises an inlet pipe 1 and a distribution pipe 2, wherein one end of the distribution pipe 2 is connected with the inlet pipe 1, the other end is sealed, the distribution pipe 2 is designed to be a conical spiral coil type structure, a plurality of spraying openings 3 are uniformly arranged on the distribution pipe 2 at intervals, and the diameter of the spraying openings 3 is gradually increased from one end of the inlet pipe to a small value, and when the diameter is increased to a certain degree, a wire netting 5 is arranged on the spraying openings 3;
in order to prevent the material flow in-process, the material jam appears in ring canal bend, the utility model discloses on every circle coil pipe section of distributing pipe 2, be equipped with 1-2 openings, be equipped with branch pipe 4 of taking the end cap on the opening, form the material buffer, at the material flow in-process, the end cap of branch pipe 4 seals.
The equation of a three-dimensional rectangular coordinate system of the conical spiral coil is
，
Wherein z ∈ [0, H ]]Diameter of pole
the pitch a is the pitch of the spiral, α represents the half angle of the cone top of the spiral tube, theta is the rotation angle on the horizontal plane, H is the height of the cone, and the value range of alpha is 30-60 degrees.
The embodiment of the utility model provides an inert particle fluidized bed 6 diameters of taking are 1000mm, and equipment overall height is 4600m to alumina ceramic ball is as inert particle 7, and the feed inlet diameter of the ordinary inlet pipe that adopts in the experiment is 20mm, and feed inlet distance distribution board 8600mm, and the material carries out fountain feeding. The utility model discloses a liquid distributor's pipe diameter is 20mm together, and circular cone spiral coil pipe maximum diameter is 800mm, and the spiral shell interval is 100mm, and the ring canal is gone up the 3 diameters that spray that distribute and is held the crescent by the feed inlet, increases to 5mm by 0.5mm gradually, and when spraying a 3 diameters and being greater than 2mm, is equipped with wire netting 5 on spraying a 3.
Example 1
The glucose solution of 0.3kg/l is prepared, the feeding speed is 0.5m/s, under the same operation condition, the common feeding pipe and the liquid distributor designed by the utility model are respectively tried to be adopted for feeding, the air supply device provides cold air, the electric heater heats the hot air to 100 ℃, the hot air is blown into the fluidized bed from the lower part of the inert particle fluidized bed 6 through the distribution plate 8, the inert particles 7 are blown to the fluidized state, the liquid material enters the distribution pipe 2 from the feeding hole 1 and is sprayed and coated on the inert particles 7 through the spraying hole 3, and the dried material is blown out after the inert particles 7 collide into powder.
Through observation, the inert particles 7 are bonded into blocks after the feeding of the common feeding pipe is carried out for about 20 minutes, the rest materials can not be coated on the surface of the inert particles 7 well, but are formed into small particles, and the materials become hard and difficult to form powder along with the drying process, so that the drying time is prolonged, the working efficiency is reduced, and experiments show that under the same conditions, to ordinary inlet pipe, a complete drying process (spray, parcel, collision, become powder, separation blow off) needs about 2 hours, and the utility model discloses a liquid distributor, the material can disperse more evenly and spray in inert particle, compares in ordinary inlet pipe, the utility model discloses a liquid distributor of design does not present obvious dead bed phenomenon yet about 20 minutes, can reach a better package and scribble the effect, and a complete drying process has shortened 1 hour.
Example 2
Glucose solutions with different concentrations are prepared, under the same operation conditions, a common feeding pipe and a liquid distributor designed by the utility model are respectively tried to feed, glucose solutions with different concentrations are adopted in each experimental operation, a wind supply device provides cold wind, an electric heater heats hot wind to 100 ℃, hot wind blows into the fluidized bed from the lower part of an inert particle fluidized bed 6 through a distribution plate 8, inert particles 7 are blown to a fluidized state, liquid materials enter a distribution pipe 2 from a feeding hole 1 and are sprayed and coated on the inert particles 7 through a spraying hole 3, the materials are dried and then are blown out after being collided into powder through the inert particles 7, other conditions are unchanged, the fluctuation of pressure intensity in the experimental process is recorded in the experiment, the dead bed phenomenon can be observed and analyzed under the condition of the feeding concentration by taking the relative stability of the pressure intensity as a judgment standard, so as to determine the maximum feeding amount (the critical point of the relative stability of the pressure intensity, unit: kilogram inert particles/(liter ∙)), it was found experimentally that the maximum feed rate using the liquid distributor of the present invention was about 3 times that of the conventional feed tube.
Example 3
The inert particles 7 in the fluidized bed of example 1 were sampled and detected for a plurality of times, and the following results were obtained: the material on the inert particles 7 of the feeding experiment of the common feeding pipe has the condition of uneven distribution, and the condition that the material is hardly wrapped on 12.3 percent and 10.9 percent of the inert particles even occurs in two times of sampling; and through the utility model discloses an inert particle of liquid distributor experiment, the sample detection discovery has the condition that 3.7% inert particle did not wrap up the material once to go out.
Through the experiment discovery, comparatively speaking, the liquid distributor of the utility model design distributes more evenly than ordinary inlet pipe.
Claims (4)
1. The utility model provides an inert particles is liquid distributor for fluidized bed, its characterized in that includes inlet pipe (1) and distributor pipe (2), distributor pipe (2) one end is connected with inlet pipe (1), and the other end seals, and distributor pipe (2) are established to circular cone screw type coil tubular structure, and even interval sets up a plurality of mouths (3) that spray on distributor pipe (2), and begins from feed inlet one end, and the diameter that sprays mouth (3) is crescent from beginning to end.
2. The liquid distributor for an inert fluidized bed according to claim 1, wherein the diameter of the spray opening (3) is 0.5mm to 5 mm.
3. The liquid distributor for inert fluidized bed according to claim 2, wherein the wire netting (5) is provided on the shower opening (3) when the diameter of the shower opening (3) is larger than 2 mm.
4. The liquid distributor for inert fluidized bed according to claim 1, wherein each coil section of the distribution pipe (2) has 1-2 openings, and the openings are provided with branch pipes (4) with plugs to form a material buffer zone to prevent material blockage at the bending part of the ring pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921430893.8U CN210543397U (en) | 2019-08-30 | 2019-08-30 | Liquid distributor for inert particle fluidized bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921430893.8U CN210543397U (en) | 2019-08-30 | 2019-08-30 | Liquid distributor for inert particle fluidized bed |
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| Publication Number | Publication Date |
|---|---|
| CN210543397U true CN210543397U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921430893.8U Active CN210543397U (en) | 2019-08-30 | 2019-08-30 | Liquid distributor for inert particle fluidized bed |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110433509A (en) * | 2019-08-30 | 2019-11-12 | 浙江工业大学 | A kind of inert particles fluidized bed liquid distribution trough |
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2019
- 2019-08-30 CN CN201921430893.8U patent/CN210543397U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110433509A (en) * | 2019-08-30 | 2019-11-12 | 浙江工业大学 | A kind of inert particles fluidized bed liquid distribution trough |
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