CN114470817A

CN114470817A - Spray drying process and device for biomass polymer adsorption material

Info

Publication number: CN114470817A
Application number: CN202210025540.XA
Authority: CN
Inventors: 时建伟; 腾晓旭; 袁钦焱
Original assignee: Yangtze Normal University
Current assignee: Yangtze Normal University
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2022-05-13

Abstract

The invention provides a spray drying process and a device of a biomass polymer adsorption material, which specifically comprise the following steps: s1: pretreating raw materials; s2: extracting a raw material liquid; s3: mixing the raw materials; s4: spraying; s5: a drying step; s6: the powder is sieved. Along with the influence of air flow and gravity down, the particle can fall on the surface of sieve, start driving motor, it is rotatory with the centre of a circle of transmission shaft to drive driven pulley through drive pulley and drive belt, and it is rotatory to drive the transmission shaft, make and rotate strip synchronous motion, make and rotate the particle that the strip drove the sieve plate surface and move, the particle that makes the diameter be less than the sieve mesh gets into on the next sieve through the sieve mesh, make the great granule of granule rotate produce centrifugal force under the effort of centrifugal force to remove to the outside of sieve gradually rotating the strip, until in getting into the blown down tank with discharging channel, thereby separate the granule raw materials step by step, the staff of being convenient for classifies.

Description

Spray drying process and device for biomass polymer adsorption material

Technical Field

The invention relates to the technical field of spray drying devices, in particular to a spray drying process and a spray drying device for a biomass polymer adsorbing material.

Background

When the biomass adsorption material is produced, raw materials need to be extracted, and an extracting solution is dried by a spray drying device to be made into powder particles, for example, the efficient and energy-saving high-speed centrifugal spray drying device provided by the patent with the application number of CN201922404705.0 comprises a spray drying tower, an overheated steam heater, a high-speed centrifugal atomizer, a material tank, a pressure pump, a cyclone separator, a suction fan, an air purifier, an electric heater and an automatic rapping device; the top in the spray drying tower is provided with a high-speed centrifugal atomizer, and the top and the bottom of the spray drying tower are respectively provided with a material inlet and a material outlet; the material outlet is communicated with the inlet of the cyclone separator through a pipeline; the top of the spray drying tower is also provided with a steam inlet; an automatic rapping device is arranged on the side wall of the spray drying tower; the steam outlet at cyclone top and the steam inlet at the top of the spray drying tower are communicated, and the pipeline between the steam outlet of the cyclone and the steam inlet of the spray drying tower is sequentially provided with: the device comprises a suction fan, an air purifier, an electric heater and a superheated steam heater. The drying device can realize the rapid drying of traditional Chinese medicine products and meet the requirements of high efficiency and energy conservation.

However, in the technical scheme, heat cannot be recycled when the spray drying device is used, so that energy consumption of the device during use is greatly increased, particles with different sizes cannot be separated after drying is completed, and the particles are not convenient to classify according to using modes.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a spray drying process and a spray drying device for a biomass polymer adsorption material, which solve the problems that heat cannot be recycled at present, the energy consumption of equipment is greatly increased during use, particles with different sizes cannot be separated after drying is finished, and the particles are inconvenient to classify according to the use mode.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a spray drying process of a biomass polymer adsorption material specifically comprises the following steps:

s1: pretreating raw materials, namely crushing the biomass raw materials by a crusher to obtain raw material fragments;

s2: extracting a raw material liquid, namely adding raw material fragments and water into an ultrasonic extractor, wherein the ratio of the water to the raw material fragments is 1:9, and extracting by using the ultrasonic extractor to obtain the raw material liquid;

s3: mixing raw materials, namely adding the raw material liquid and the binder into a mixing device in a ratio of 10:1 for mixing, wherein the mixing temperature is 80-90 ℃;

s4: a spraying step of putting the raw material liquid mixed in the step S3 into a spray drying apparatus, and spraying the raw material liquid in the form of mist by an atomizer;

s5: and (3) drying: drying the vaporific raw material liquid by a heater to obtain material powder;

s6: sieving the powder to make the material powder pass through a 70-100 mesh sieve, and separating the powder with a size larger than 70-100 meshes from the powder with a size smaller than 70-100 meshes.

Meanwhile, the invention also discloses a device for the spray drying process of the biomass polymer adsorbing material, which comprises the following steps:

the spray drying device comprises a support frame, a drying box is fixedly arranged on the upper surface of the support frame, a fan is fixedly arranged on one side of the upper surface of the support frame, a loop pipe is fixedly arranged at the input end of the fan, one end of the loop pipe is fixedly connected and communicated with the lower end of the drying box, an input pipe is fixedly arranged at the output end of the fan, the upper end of the input pipe is fixedly arranged on an air heater, an input mechanism is fixedly arranged at the upper end of the air heater, the input mechanism comprises an annular input pipe, the annular input pipe is fixedly arranged on the inner wall of the drying box, a driving mechanism is fixedly arranged on the outer wall of the drying box, the driving mechanism comprises a fixed shell, the fixed shell is fixedly arranged on the outer wall of the drying box, a discharging mechanism is arranged on the outer wall of the drying box, and the discharging mechanism comprises a plurality of sieve plates, and the sieve plates are fixedly arranged on the inner wall of the drying box.

Preferably, the upper end fixed surface of drying cabinet installs centrifugal atomizer, centrifugal atomizer's atomizing end sets up the inside at the drying cabinet, centrifugal atomizer's input end fixed mounting has the feedstock delivery pipe, the one end of feedstock delivery pipe is connected with the inside delivery pump of raw materials bin, raw materials bin fixed mounting is at the upper surface of support frame.

Preferably, the outer wall of the annular input pipe is fixedly provided with a connecting pipe in a communicated manner, one end of the connecting pipe penetrates through the outer wall of the drying box to be connected with the air heater, and the inner wall of the annular input pipe is integrally provided with a plurality of dispersing joints.

Preferably, the inside of the plurality of the dispersion joints is communicated with the inside of the annular input pipe, a sealing block connecting groove is formed in one end, far away from the annular input pipe, of each dispersion joint, and a sealing block is slidably mounted inside the sealing block connecting groove.

As preferred, the conveyer trough has been seted up to the inside of sealed piece, sealed piece has been kept away from and has been seted up a plurality of on the one end outer wall of annular input tube and lead to the groove, every the inside that leads to the groove all communicates with the inside of conveyer trough, the one end fixed mounting that sealed piece is close to annular input tube has the spring, the other end fixed mounting of spring is on fixed boss, fixed boss integration sets up on the inner wall that the dispersion connects.

Preferably, a driving motor is fixedly mounted inside the fixed shell, a driving belt pulley is fixedly mounted at an output end of the driving motor, and the driving belt pulley is connected with the driven belt pulley through a driving belt.

Preferably, the driven pulley is fixedly arranged at the lower end of the transmission shaft, and the transmission shaft is rotatably arranged on the sieve plates.

Preferably, the sieve meshes of the sieve plates are different in size, the diameters of the sieve meshes of the sieve plates are gradually reduced from top to bottom, each sieve plate is movably connected with a rotating strip, and the rotating strips are fixedly mounted on the outer wall of the transmission shaft.

Preferably, each sieve plate is provided with a discharge chute, each discharge chute is internally provided with a discharge channel in an inclined manner, and one end of each discharge channel penetrates through the outer wall of the drying box and is connected with the discharge pipe.

(III) advantageous effects

The invention provides a spray drying process and a spray drying device for a biomass polymer adsorption material. The method has the following beneficial effects:

at first start air heater and fan, make the fan pass through the input tube to the inside air delivery of air heater, and heat the air through air heater, and carry the inside that gets into annular input tube through the connecting pipe, a plurality of dispersion joint to the inside transport air of drying cabinet that sets up through integration on the annular input tube inner wall, start the inside delivery pump of raw materials bin after that and carry the inside that gets into centrifugal atomizer with the raw materials through the raw materials conveyer pipe and pass through, the raw materials of centrifugal atomizer atomizes, and input the inside of drying cabinet, connect the outside annular input hot-air from the atomizing raw materials through a plurality of dispersions, thereby promote the contact effect of hot-air and atomizing raw materials, promote the heat exchange efficiency of raw materials and air, make atomizing raw materials flash-drying become the granule.

The input through the fan passes through the return pipe and is connected with the lower extreme of drying cabinet to can inhale the inside air of drying cabinet, make the air circulate, thereby can reuse the heat in the air, greatly increased thermal utilization ratio, promote the energy-conserving effect of equipment greatly.

Along with the influence of air flow and gravity down, the granule can fall on the surface of sieve, start driving motor, can drive driven pulley with the centre of a circle of transmission shaft through drive pulley and drive belt and rotate, and it is rotatory to drive the transmission shaft, make and rotate strip synchronous motion, make the granule that rotates strip drive sieve plate surface move, the granule that makes the diameter be less than the sieve mesh passes through on the sieve mesh gets into next sieve, make the great granule of granule rotate to the outside removal of sieve gradually under the effort that produces centrifugal force rotating strip, until get into in the blown down tank with discharging channel, thereby separate the granule raw materials step by step, the staff of being convenient for is categorised.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic top view of the present invention;

FIG. 4 is a schematic view of the present invention taken at A-A in FIG. 3;

FIG. 5 is an enlarged schematic view of the structure at B in FIG. 4 of the present invention:

FIG. 6 is an enlarged view of the structure at the point C in FIG. 4 according to the present invention;

FIG. 7 is a schematic view of a dispenser configuration of the present invention;

fig. 8 is a schematic view of the present invention taken at D-D in fig. 7.

Wherein, 1, a support frame; 2. a drying oven; 3. a fan; 4. a loop pipe; 5. an input tube; 6. an air heater; 7. an input mechanism; 701. an annular input tube; 702. a connecting pipe; 703. dispersing the joints; 704. a sealing block connecting groove; 705. a sealing block; 706. a conveying trough; 707. a through groove; 708. a spring; 709. fixing the boss; 8. a drive mechanism; 801. fixing the housing; 802. a drive motor; 803. a drive pulley; 804. a drive belt; 805. a driven pulley; 806. a drive shaft; 9. a discharging mechanism; 901. a sieve plate; 902. rotating the strip; 903. a discharge chute; 904. a discharge channel; 10. a centrifugal atomizer; 11. a raw material conveying pipe; 12. raw materials bin.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

the embodiment of the invention provides a spray drying process of a biomass polymer adsorption material, which specifically comprises the following steps:

s3: mixing raw materials, namely adding a raw material solution and a binder into a mixing device in a ratio of 10:1 for mixing, wherein the mixing temperature is 85 ℃;

s4: a spraying step of spraying the raw material liquid mixed in the step S3 into a spray drying apparatus by an atomizer;

s6: sieving the powder to make the material powder pass through 85 mesh sieve, and separating the powder larger than 85 mesh from the powder smaller than 85 mesh.

as shown in fig. 1, 2, 3, 4, 5, 6, 7, and 8, the spray drying device includes a support frame 1, a drying box 2 is fixedly mounted on an upper surface of the support frame 1, a fan 3 is fixedly mounted on one side of the drying box 2 on the upper surface of the support frame 1, an input end of the fan 3 is fixedly mounted with a loop pipe 4, one end of the loop pipe 4 is fixedly connected and communicated with a lower end of the drying box 2, an output end of the fan 3 is fixedly mounted with an input pipe 5, an upper end of the input pipe 5 is fixedly mounted on an air heater 6, an input mechanism 7 is fixedly mounted on an upper end of the air heater 6, the input mechanism 7 includes an annular input pipe 701, the annular input pipe 701 is fixedly mounted on an inner wall of the drying box 2, a driving mechanism 8 is fixedly mounted on an outer wall of the drying box 2, the driving mechanism 8 includes a fixed housing 801, the fixed shell 801 is fixedly installed on the outer wall of the drying box 2, the discharging mechanism 9 is installed on the outer wall of the drying box 2, the discharging mechanism 9 comprises a plurality of sieve plates 901, and the sieve plates 901 are fixedly installed on the inner wall of the drying box 2.

Wherein, the upper end fixed surface of drying cabinet 2 installs centrifugal atomizer 10, the atomizing end of centrifugal atomizer 10 sets up the inside at drying cabinet 2, the input fixed mounting of centrifugal atomizer 10 has feedstock delivery pipe 11, feedstock delivery pipe 11's one end is connected with the inside delivery pump of feedstock storage bin 12, feedstock storage bin 12 fixed mounting is at the upper surface of support frame 1, can carry the inside that gets into drying cabinet 2 and atomize through centrifugal atomizer 10 with raw materials liquid.

It should be noted that a connecting pipe 702 is fixedly installed and communicated on the outer wall of the annular input pipe 701, one end of the connecting pipe 702 passes through the outer wall of the drying box 2 and is connected with the air heater 6, a plurality of dispersing joints 703 are integrally arranged on the inner wall of the annular input pipe 701, the interiors of the dispersing joints 703 are all communicated with the interior of the annular input pipe 701, a sealing block connecting groove 704 is arranged at one end of each dispersing joint 703 far from the annular input pipe 701, a sealing block 705 is slidably installed inside the sealing block connecting groove 704, a conveying groove 706 is arranged inside the sealing block 705, a plurality of through grooves 707 are arranged on the outer wall of one end of the sealing block 705 far from the annular input pipe 701, the interior of each through groove 707 is communicated with the interior of the conveying groove 706, and a spring 708 is fixedly installed at one end of the sealing block 705 close to the annular input pipe 701, the other end of the spring 708 is fixedly installed on a fixed boss 709, the fixed boss 709 is integrally arranged on the inner wall of the dispersion joint 703, air can be dispersed to flow in a hollow mode through the plurality of dispersion joints 703, so that the heat exchange efficiency is improved, the drying speed is improved, when the air flows from the inside of the annular input pipe 701 to the inside of the plurality of dispersion joints 703, the pressure inside the dispersion joints 703 can be increased, the sealing block 705 is pushed by air pressure to move towards the outer side of the sealing block connecting groove 704, the through groove 707 is leaked, so that the air flows outwards through the conveying groove 706 and the plurality of through grooves 707, after the air pressure inside the dispersion joints 703 is reduced, the sealing block 705 is pulled by the pulling force of the spring 708 to reset, and therefore material liquid or powder is prevented from entering the inside of the pipeline.

It should be noted that a driving motor 802 is fixedly installed inside the fixed housing 801, a driving pulley 803 is fixedly installed at an output end of the driving motor 802, the driving pulley 803 is connected with a driven pulley 805 through a driving belt 804, the driven pulley 805 is fixedly installed at a lower end of a transmission shaft 806, the transmission shaft 806 is rotatably installed on the screen plates 901, the driving pulley 803 can be driven to rotate through the driving motor 802, and power is transmitted to the driven pulley 805 through the driving belt 804, so that the transmission shaft 806 is driven to rotate by the driven pulley 805.

It should be noted that the sieve holes of the sieve plates 901 are different in size, the sieve hole diameters of the sieve plates 901 are gradually reduced from top to bottom, a rotating strip 902 is movably connected to each sieve plate 901, the rotating strips 902 are fixedly mounted on the outer wall of the transmission shaft 806, a discharge chute 903 is formed in each sieve plate 901, a discharge channel 904 is obliquely mounted inside each discharge chute 903, one end of each discharge channel 904 penetrates through the outer wall of the drying box 2 to be connected with the discharge pipe, and particles on the surface of the sieve plate 901 can be driven to move by rotation of the rotating strips 902, so that small particles enter the next-stage sieve plate 901 through the sieve holes in the sieve plate 901 to be screened, and larger particles gradually move outside the sieve plate 901 under the influence of centrifugal force generated by rotation of the rotating strips 902 to enter the discharge chute 903.

The working principle is as follows:

when in use, firstly, the air heater 6 and the fan 3 are started, the fan 3 is enabled to convey air to the inside of the air heater 6 through the input pipe 5, the air is heated by the air heater 6 and conveyed into the inside of the annular input pipe 701 through the connecting pipe 702, the air is conveyed into the drying box 2 through the plurality of dispersing joints 703 integrally arranged on the inner wall of the annular input pipe 701, then the conveying pump in the raw material storage box 12 is started to convey the raw material into the centrifugal atomizer 10 through the raw material conveying pipe 11, the raw material is atomized by the centrifugal atomizer 10 and conveyed into the drying box 2, the hot air is annularly input from the outer side of the atomized raw material through the plurality of dispersing joints 703, so that the contact effect of the hot air and the atomized raw material is improved, the heat exchange efficiency of the raw material and the air is improved, and the atomized raw material is rapidly dried into particles, the input end of the fan 3 is connected with the lower end of the drying box 2 through the loop pipe 4, so that air in the drying box 2 can be sucked, the air is circulated, heat in the air can be recycled, the utilization rate of the heat is greatly increased, the energy-saving effect of the equipment is greatly improved, particles fall on the surface of the sieve plate 901 under the influence of air flow and gravity, the driving motor 802 is started, the driven pulley 805 is driven to rotate around the center of the transmission shaft 806 through the driving pulley 803 and the driving belt 804, the transmission shaft 806 is driven to rotate, the rotating strips 902 move synchronously, the rotating strips 902 drive the particles on the surface of the sieve plate 901 to move, the particles with the diameter smaller than the sieve holes enter the next sieve plate 901 through the sieve holes, and the particles with larger particles gradually move to the outer side of the sieve plate 901 under the action force of centrifugal force generated by the rotation of the rotating strips 902, until the granular raw materials enter the discharging groove 903 and the discharging channel 904, the granular raw materials are separated step by step, and the granular raw materials are convenient for workers to classify.

Example 2:

s3: mixing raw materials, namely adding the raw material liquid and the binder into a mixing device in a ratio of 10:1 for mixing, wherein the mixing temperature is 89 ℃;

s6: sieving the powder to make the material powder pass through a 95-mesh sieve, and separating the powder with the granularity larger than 95 meshes from the powder with the granularity smaller than 95 meshes.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a reference structure" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A spray drying process of a biomass polymer adsorption material is characterized by comprising the following steps:

s5: and (3) drying: drying the atomized raw material liquid by a heater to obtain material powder;

2. The device for the spray drying process of the biomass polymer adsorption material according to claim 1, is characterized in that: the spray drying device comprises a support frame (1), a drying box (2) is fixedly mounted on the support frame (1), a fan (3) is fixedly mounted on one side of the upper surface of the support frame (1) and located on the drying box (2), a loop pipe (4) is fixedly mounted at the input end of the fan (3), one end of the loop pipe (4) is fixedly connected and communicated with the lower end of the drying box (2), an input pipe (5) is fixedly mounted at the output end of the fan (3), the upper end of the input pipe (5) is fixedly mounted on an air heater (6), an input mechanism (7) is fixedly mounted at the upper end of the air heater (6), the input mechanism (7) comprises an annular input pipe (701), the annular input pipe (701) is fixedly mounted on the inner wall of the drying box (2), a driving mechanism (8) is fixedly mounted on the outer wall of the drying box (2), the driving mechanism (8) comprises a fixed shell (801), the fixed shell (801) is fixedly installed on the outer wall of the drying box (2), a discharging mechanism (9) is installed on the outer wall of the drying box (2), the discharging mechanism (9) comprises a plurality of sieve plates (901), and the sieve plates (901) are fixedly installed on the inner wall of the drying box (2).

3. The device for the spray drying process of the biomass polymer adsorption material according to claim 2, wherein: the utility model discloses a drying cabinet, including drying cabinet (2), upper end fixed surface installs centrifugal atomizer (10), the atomizing end setting of centrifugal atomizer (10) is in the inside of drying cabinet (2), the input fixed mounting of centrifugal atomizer (10) has feed line (11), the one end and the inside delivery pump of feed line (11) are connected, feed line (12) fixed mounting is at the upper surface of support frame (1).

4. The device for the spray drying process of the biomass polymer adsorption material according to claim 2, wherein: the outer wall of the annular input pipe (701) is fixedly installed and communicated with a connecting pipe (702), one end of the connecting pipe (702) penetrates through the outer wall of the drying box (2) to be connected with the air heater (6), and the inner wall of the annular input pipe (701) is integrally provided with a plurality of dispersing joints (703).

5. The device for the spray drying process of the biomass polymer adsorption material according to claim 4, wherein: the inner parts of the plurality of the dispersed joints (703) are communicated with the inner part of the annular input pipe (701), one end, far away from the annular input pipe (701), of each dispersed joint (703) is provided with a sealing block connecting groove (704), and a sealing block (705) is slidably mounted in the sealing block connecting groove (704).

6. The device for the spray drying process of the biomass polymer adsorption material according to claim 5, wherein: conveying grooves (706) are formed in the sealing block (705), a plurality of through grooves (707) are formed in the outer wall of one end, far away from the annular input pipe (701), of the sealing block (705), the inside of each through groove (707) is communicated with the inside of the conveying groove (706), a spring (708) is fixedly mounted at one end, close to the annular input pipe (701), of the sealing block (705), the other end of the spring (708) is fixedly mounted on a fixing boss (709), and the fixing boss (709) is integrally arranged on the inner wall of the dispersing joint (703).

7. The device for the spray drying process of the biomass polymer adsorption material according to claim 2, wherein: the inside fixed mounting of fixed shell (801) has driving motor (802), the output fixed mounting of driving motor (802) has drive pulley (803), drive pulley (803) are connected with driven pulley (805) through drive belt (804).

8. The device for the spray drying process of the biomass polymer adsorption material according to claim 7, wherein: the driven pulleys (805) are fixedly arranged at the lower end of the transmission shaft (806), and the transmission shaft (806) is rotatably arranged on the sieve plates (901).

9. The device for the spray drying process of the biomass polymer adsorption material according to claim 2, wherein: the sieve pore sizes of a plurality of the sieve plates (901) are different, the sieve pore diameters of a plurality of the sieve plates (901) are gradually reduced from top to bottom, each sieve plate (901) is movably connected with a rotating strip (902), and a plurality of rotating strips (902) are fixedly arranged on the outer wall of the transmission shaft (806).

10. The device for the spray drying process of the biomass polymer adsorption material according to claim 2, wherein: discharge chutes (903) are formed in each sieve plate (901), each discharge channel (904) is obliquely arranged in each discharge chute (903), and one end of each discharge channel (904) penetrates through the outer wall of the drying box (2) to be connected with a discharge pipe.