CN105795038B - Method for drying instant coffee or Pu' er tea - Google Patents
Method for drying instant coffee or Pu' er tea Download PDFInfo
- Publication number
- CN105795038B CN105795038B CN201410838813.8A CN201410838813A CN105795038B CN 105795038 B CN105795038 B CN 105795038B CN 201410838813 A CN201410838813 A CN 201410838813A CN 105795038 B CN105795038 B CN 105795038B
- Authority
- CN
- China
- Prior art keywords
- fan
- dust collector
- feeding
- air
- inlet
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000001035 drying Methods 0.000 title claims abstract description 30
- 235000019224 Camellia sinensis var Qingmao Nutrition 0.000 title claims abstract description 29
- 235000020339 pu-erh tea Nutrition 0.000 title claims abstract description 29
- 235000021539 instant coffee Nutrition 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 127
- 239000000428 dust Substances 0.000 claims description 143
- 239000002808 molecular sieve Substances 0.000 claims description 36
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 36
- 238000007664 blowing Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 19
- 238000005243 fluidization Methods 0.000 claims description 16
- 235000016213 coffee Nutrition 0.000 claims description 15
- 235000013353 coffee beverage Nutrition 0.000 claims description 15
- 238000007599 discharging Methods 0.000 claims description 15
- 238000011010 flushing procedure Methods 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 10
- 230000001276 controlling effect Effects 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 6
- 239000013589 supplement Substances 0.000 claims description 6
- 235000011389 fruit/vegetable juice Nutrition 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 3
- 238000006297 dehydration reaction Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000013507 mapping Methods 0.000 claims description 3
- 238000007781 pre-processing Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 238000010408 sweeping Methods 0.000 claims description 3
- 238000009834 vaporization Methods 0.000 claims description 3
- 230000008016 vaporization Effects 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 claims description 2
- 239000003814 drug Substances 0.000 abstract description 28
- 238000003860 storage Methods 0.000 description 13
- 239000003205 fragrance Substances 0.000 description 4
- 241001122767 Theaceae Species 0.000 description 3
- 235000013616 tea Nutrition 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000004108 freeze drying Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
Images
Abstract
The invention relates to a method for drying instant coffee or Pu 'er tea, which utilizes the processing equipment of medicine and edible materials capable of reducing the loss of volatile components in the materials, which is designed according to the patent claim 3 of the processing equipment of medicine and edible materials, to dry the instant coffee or Pu' er tea.
Description
Technical Field
The invention relates to a drying method of instant coffee or Pu' er tea, belonging to the technical field of circulating fluidized bed and food processing.
Background
The production method of the instant coffee or Pu ' er tea is basically the same at present, tea or coffee is boiled into liquid, then the liquid is spray-dried or vacuum freeze-dried to prepare solid instant coffee or Pu ' er tea, because the tail gas discharged by the existing spray-drying and freeze-drying equipment is directly discharged, the aroma in the coffee or tea is taken away, and the aroma of the Pu ' er tea and the instant coffee is reduced.
Disclosure of Invention
The invention aims to provide a method for drying instant coffee or Pu 'er tea residues, which can reduce the loss of the fragrance of the Pu' er tea residues and the instant coffee according to the problem that the fragrance in the coffee or the tea is taken away because tail gas discharged by drying equipment is directly discharged in the production of the instant coffee or the Pu 'er tea residues at present, so that the fragrance of the Pu' er tea residues and the instant coffee is reduced.
The patent of 'equipment for processing medicinal and edible materials' applied on the same day as the invention claims as follows:
1. a medicine and edible material processing device is characterized by comprising a fan, a positive pressure circulating pipe I, a cyclone dust collector, a positive pressure circulating pipe II, a dust collector branch and a negative pressure circulating pipe; the positive pressure circulating pipe I and the positive pressure circulating pipe II are pipelines; the ash discharge port of the cyclone dust collector is smaller than the air inlet, the inlet of the cyclone dust collector is connected with the outlet of the positive pressure circulating pipe I, and the air outlet of the cyclone dust collector is connected with the inlet of the positive pressure circulating pipe II; the branch of the dust collector is formed by sequentially connecting a bag type dust collector, a discharge tee joint and an adjusting valve, the bag type dust collector is the same as the bag type dust collector described in patent 201310748462.7, a discharge valve is arranged on the third port of the discharge tee joint, the inlet of the bag type dust collector is the inlet of the branch of the dust collector, the outlet of the adjusting valve is the outlet of the branch of the dust collector, and the inlet of the branch of the dust collector is connected with the outlet of a positive pressure circulating pipe II; the negative pressure circulating pipe is a pipeline, the head end of the negative pressure circulating pipe is an inlet, the tail end of the negative pressure circulating pipe is an outlet, a cyclone dust collector ash discharge port interface, a dust collector branch interface and a feeding device interface are arranged between the outlet and the inlet, a feeding valve and/or an atomizer are/is arranged on the feeding device interface, the cyclone dust collector ash discharge port interface is connected with a cyclone dust collector ash discharge port, and the dust collector branch interface is connected with a dust collector branch outlet; the outlet of the negative pressure circulating pipe, the inlet of the fan, the outlet of the fan and the inlet of the positive pressure circulating pipe I are connected in sequence;
2. the processing equipment of claim 1, further comprising an adjusting device, wherein the adjusting device comprises an inlet air temperature adjusting device and/or a fan speed adjusting device, the inlet air temperature adjusting device controls the temperature of inlet air by using an output signal of a temperature sensor mounted on the positive pressure circulation pipe I or the positive pressure circulation pipe II so that the temperature in the processing equipment does not exceed a set temperature, and the fan speed adjusting device is used for adjusting the fan speed to control the heat converted from the kinetic energy of the fan so that the temperature in the processing equipment does not exceed the set temperature;
3. the processing equipment of claim 1, wherein the processing equipment is further provided with a molecular sieve dryer; the medicine and edible material processing equipment is also provided with a molecular sieve dryer: the air outlet of the molecular sieve dryer is connected with the air inlet of the medicine and edible material processing equipment through an air supply pipeline, the air outlet of the molecular sieve dryer is also provided with an interface connected with a back-blowing air source supercharging device, the molecular sieve dryer adopts natural air as inlet air, and the air inlet on an air inlet pipeline is communicated with the outside of the machine; or, the molecular sieve dryer adopts the tail gas discharged by the branch of the bag type dust collector as the inlet air, the air inlet is connected with the air outlet of the branch of the bag type dust collector through an air inlet pipeline, a gas supply interface is arranged on the air inlet or the air outlet, and the gas supply interface is communicated with the natural air outside the machine or with a special gas source:
4. the processing equipment of the medicine and edible materials according to claim 3, wherein the outlet of the molecular sieve dryer is further provided with an air heater, the air inlet of the air heater is connected with the air outlet of the molecular sieve dryer, and the air outlet of the air heater is connected with the air inlet of the equipment;
5. the processing equipment of claim 1, wherein the exhaust outlet of the bag-type dust collector branch is further provided with a tail gas treatment device, an inlet of the tail gas treatment device is connected with the exhaust outlet of the bag-type dust collector branch through a pipeline, and the tail gas treatment device is a condenser or a collection device of specific components:
6. the processing equipment of claim 3, wherein the exhaust outlet of the bag-type dust collector branch is further provided with a tail gas treatment device, the inlet of the tail gas treatment device is connected with the exhaust outlet of the bag-type dust collector branch through a pipeline, the tail gas treatment device is a condenser or a collection device of specific components, and the air outlet of the tail gas treatment device is connected with the air inlet of the molecular sieve dryer;
7. a processing equipment of pharmaceutical and edible materials according to claim 3, an ash discharge valve is arranged on an ash discharge port of the cyclone dust collector, the outlet of the ash discharge valve is connected with an ash discharge port interface of the cyclone dust collector on the negative pressure circulating pipe, the medicine and edible material processing equipment is internally provided with a storage rack, the storage rack is used for placing materials to be dried, the storage rack is a closed box body with a door, the interior of the storage rack is layered by grids, the materials are uniformly fixed on the grids, a gap is reserved between the materials, the sum of the cross section area of any gap is larger than the cross section area of the positive pressure circulating pipe I, an air inlet of the storage rack is connected with an air outlet of the molecular sieve dryer, the air outlet of the storage rack is connected with an inlet of the medicine and edible material processing equipment, or/and the air inlet of the commodity shelf is connected with the air outlet of the branch of the bag type dust collector, and the air outlet of the commodity shelf is connected with the air inlet of the molecular sieve dryer;
8. the processing equipment of the medicine and the edible material according to claim 4, wherein a storage rack is arranged in the processing equipment of the medicine and the edible material, the storage rack is used for placing the material to be dried, the storage rack is a closed box body with a door, the interior of the storage rack is layered by a grid, the material is uniformly fixed on the grid, a gap is left between the materials, the sum of the cross section areas of the gaps is larger than the cross section area of the positive pressure circulating pipe I, an air inlet of the storage rack is connected with an air outlet of an air heater, an air outlet of the storage rack is connected with an inlet of the processing equipment of the medicine and the edible material, or/and an air inlet of the storage rack is connected with an air outlet of a branch of a bag type dust collector, and;
9. the processing equipment of medicinal and edible materials as claimed in any one of claims 1-8, wherein the positive pressure circulation pipe I is further provided with a discharge port, and a discharge valve is arranged on the discharge port; and/or, be provided with the bin outlet on the cyclone, be provided with the relief valve on the bin outlet: and/or, the negative pressure circulating pipe is eliminated: the dust remover branch interface is disconnected with the bag type dust remover branch and the negative pressure circulating pipe, a discharge three-way valve and an adjusting valve on the dust remover branch are eliminated, a planet discharge valve is additionally arranged at the tail end of the bag type dust remover branch, materials collected by the bag type dust remover branch are discharged through the planet discharge valve, or a bent pipe is further arranged inside the discharge three-way valve of the dust remover branch, one end of the bent pipe is connected with a third port of the discharge three-way valve, the other end of the bent pipe is arranged in the other port of the discharge three-way valve in a hanging manner, an inlet of the adjusting valve is connected with the third port of the discharge three-way valve, the planet discharge valve is arranged on the other port of the discharge three-way valve, and materials falling;
10. the invention also provides a medicine and edible material processing equipment system which is characterized by comprising a front section device and a rear section device, wherein the front section device consists of the medicine and edible material processing equipment as described in any one of claims 1 to 9, the rear section device consists of the medicine and edible material processing equipment as described in claims 1 to 3 or the circulating fluidization equipment as described in any one of claims 1 to 14 of the invention patent 201310748462.7, and a feeding device interface of the rear section device is connected with an outlet of a discharge valve of the front section device.
Figure 1 is a 'solid-liquid medicine, edible material processing equipment' designed according to the patent. The device consists of a fan 201, a positive pressure circulating pipe I202, a cyclone dust collector 204, a positive pressure circulating pipe II203, a dust collector branch, a negative pressure circulating pipe 213 and a regulating device; the positive pressure circulating pipe I202 and the positive pressure circulating pipe II203 are pipelines; the diameter of an ash discharge opening of the cyclone dust collector 204 is one fourth of that of an air inlet, a discharge opening is further formed in the cyclone dust collector, a discharge valve 205 is arranged on the discharge opening, an inlet of the cyclone dust collector is connected with an outlet of the positive pressure circulating pipe I202, and an air outlet of the cyclone dust collector is connected with an inlet of the positive pressure circulating pipe II 203; the dust remover branch is formed by sequentially connecting a first bag type dust remover 206, a second bag type dust remover 207, a discharge tee 208 and a regulating valve 209, the first bag type dust remover 206 and the second bag type dust remover 207 are the same as the bag type dust remover disclosed by the invention patent 201310748462.7, a discharge valve 212 is arranged on a third opening of the discharge tee 208, an inlet of the first bag type dust remover 206 is an inlet of the dust remover branch, an outlet of the regulating valve 209 is an outlet of the dust remover branch, and the inlet of the dust remover branch is connected with an outlet of the positive pressure circulating pipe II 203; the negative pressure circulating pipe 213 is a pipeline, the head end of the negative pressure circulating pipe 213 is an inlet, the tail end is an outlet, a cyclone dust collector ash discharge port interface, a dust collector branch interface and two feeding device interfaces are arranged between the outlet and the inlet, one feeding device interface is provided with a feeding valve 211, the other feeding device interface is provided with an atomizer 210, the cyclone dust collector ash discharge port interface is connected with an ash discharge port of a cyclone dust collector 204, and the dust collector branch interface is connected with a dust collector branch outlet; the adjusting device comprises an inlet air flow temperature adjusting device and a fan rotating speed adjusting device, the inlet air flow temperature adjusting device controls the temperature of inlet air flow by utilizing an output signal of a temperature sensor 214 arranged at the outlet of the positive pressure circulating pipe I202 so that the temperature in the fan does not exceed the set temperature, and the fan rotating speed adjusting device is used for adjusting the rotating speed of the fan so as to control the heat converted from the kinetic energy of the fan and enable the temperature in the fan to not exceed the set temperature. The outlet of the negative pressure circulating pipe 213, the inlet of the fan 201, the outlet of the fan 201 and the inlet of the positive pressure circulating pipe I202 are connected in sequence; the equipment can add liquid materials into the machine through the atomizer to be rapidly prepared into powder.
FIG. 2 shows a processing apparatus for pharmaceutical and edible materials designed to reduce the loss of volatile components from the materials according to this patent. A molecular sieve dryer 223 and an air heater 224 are added to the solid-liquid medicine and edible material processing equipment shown in the attached figure 1, the outlet of the molecular sieve dryer is connected with the inlet of the air heater 224, the air outlet of the air heater 224 is connected with the inlet of the solid-liquid medicine and edible material processing equipment, the temperature of hot air output by the air heater 224 is controlled by the adjusting device, a temperature sensor 226 is arranged on a positive pressure circulating pipe II, and the air inlet of the molecular sieve dryer is connected with the air outlet of a branch of the bag type dust collector through an air inlet pipeline 222; the outlet of the molecular sieve dryer is also provided with a connector 228 connected with a back-blowing air source supercharging device and a gas supply connector 227; the molecular sieve in molecular sieve dryer 223 is a molecular sieve having an adsorption effect on water.
As shown in figure 1, the solid-liquid medicine and edible material processing equipment has the advantages that materials are dispersed into particles under the action of a fan and high-speed airflow generated by the fan and flow in a high-speed circulation mode along with the airflow in a circulation channel, volatile components such as fragrance and moisture in the materials are volatilized and discharged at the same time, the loss of the volatile components is large, medicine and edible material processing equipment capable of reducing the loss of the volatile components in the materials is used as intake airflow after the moisture in tail gas discharged by the solid-liquid medicine and edible material processing equipment is separated through a molecular sieve dryer, the drying medium does not leak, the concentration of volatile substances in the materials is increased after the volatile substances in the materials are volatilized, so that the effect of inhibiting the further volatilization of the volatile components is achieved, the effect of reducing the loss of the volatile components of the processed materials is achieved to a certain degree, in addition, the moisture content in an operation medium processed by the molecular sieve dryer is lower than that of natural intake air, is beneficial to transferring the moisture in the material to the operation medium.
The technical measures adopted for realizing the aim of the invention are that the method for drying the instant coffee or Pu ' er tea juice adopts the processing equipment of the medicine and the edible material which is designed according to the patent ' processing equipment of the medicine and the edible material ' and can reduce the loss of volatile components in the material ' to dry the coffee or the Pu ' er tea juice, and is carried out according to the following steps:
s1, preprocessing: preparing coffee or Pu' er tea into liquid:
s2, equipment configuration: the pipeline of the fan is configured to ensure that the air speed of air load in the positive pressure circulating pipe I is more than 36 m/s;
s3, starting the equipment: switching on a power supply, starting a fan, a molecular sieve dryer, a back blowing device of a bag type dust collector and an air heater, and adjusting the temperature of hot air output by the air heater to ensure that the temperature in the positive pressure circulating pipe I is not more than 60 ℃; after the fan is started, the rotating speed of the fan is adjusted to enable the working current of the fan to be 40-75% of the rated current; after the equipment is started, the opening degree of a branch adjusting valve of the dust remover is adjusted to 10-25%;
s4, operation process:
s401, feeding: adding the coffee or Pu' er tea liquid obtained by the S1 treatment into equipment at a constant speed by using an atomizer, controlling the feeding speed to be adapted to the evaporation capacity of the equipment, so that no drop-shaped juice appears at an ash discharge port of a cyclone dust collector, the feeding speed is not too low, and the feeding is stopped when the working current of a fan exceeds 98 percent of the rated current of the fan;
s402, operation process and operation in the process:
s40201, drying process: after the coffee or Pu' er tea liquid is dispersed into particles by an atomizer, the particles form a fluidized state under the action of a fan and high-speed airflow generated by the fan and circularly flow in a circulating channel at a high speed, and the moisture in the particles is quickly volatilized and is discharged by passing through a cloth bag of a bag type dust collector along with the airflow:
s40202, dehydration of the process medium: tail gas discharged by the bag type dust collector is dehydrated by a molecular sieve dryer and then enters an air heater to be heated to be used as inlet air flow, and the moisture content in the inlet air flow is lower than that of natural air, so that the vaporization speed of moisture in materials is accelerated;
s40203, internal circulation: most materials are separated by the cyclone dust collector and enter the negative pressure circulating pipe together with a small part of air flow through the ash discharging port for circulating drying: a small part of material entering the branch of the dust remover along with most of air flow is separated out and then enters the negative pressure circulating pipe along with a small part of air flow through the regulating valve; .
S40204, supplement feeding: along with the reduction of the moisture, the reduction of the density of the fluidized material can cause the load of the fan to be reduced, when the working current of the fan is reduced to be below 88% of the rated current, a feeding valve is opened to supplement feeding, and the feeding amount is controlled to be within 98% of the rated current of the fan;
in the operation process, 2-5 times of supplementary feeding are needed, wherein the feeding speed is too slow when the feeding speed is less than 2 times, the feeding speed is too fast when the feeding speed is more than 5 times, and the time interval from the first feeding to the first supplementary feeding is called a feeding period;
s40205, discharging: after the time of one charging period, the current reduction amplitude of the fan is less than 4 percent of the rated current
When the moisture content of the materials in the machine meets the requirement, a discharge valve on the cyclone dust collector and a discharge valve on a branch discharge tee joint of the dust collector are opened, and an adjusting valve is closed to discharge the materials in the machine;
after the materials in the machine are discharged, opening the regulating valve to the original opening degree, closing the discharge valve on the cyclone dust collector and the discharge valve on the dust collector branch discharge tee joint, and sequentially repeating S401, S40204 and S40205, thus repeatedly performing cycle operation;
s403, adjusting process parameters:
s40301, controlling the water content of the material entering the branch of the dust collector on the principle that the material is not adhered to a cloth bag of the bag type dust collector; the water content of the material entering the branch of the dust remover can be adjusted by adjusting the rotating speed of the fan, the atomizing quality, the feeding speed and the feeding amount and changing the diameter of the ash discharging port of the cyclone dust remover,
s40302, adjusting a back-blowing device: observing the pressure condition of the branch of the dust remover in the operation process, and timely adjusting the back flushing period, the back flushing time and the back flushing air source pressure of the back flushing device to enable the pressure in the branch of the dust remover to be in a state as low as possible;
s40303, adjusting the material fluidization state: observing the fluidization state of the material in the operation process, and adjusting the rotating speed of the fan and the feeding amount to enable the material to be in a good fluidization state;
s40304, adjusting the temperature of hot air output by the air heater, observing the temperature state in the positive pressure circulating pipe I in the operation process, and timely adjusting the temperature of the hot air output by the air heater to be below 60 ℃: when the air heater stops heating and cannot control the temperature in the positive pressure circulating pipe I to be below 60 ℃, reducing the rotating speed of the fan and reducing the heat converted from the kinetic energy of the fan for control;
when the rotating speed of the fan needs to be reduced to control the temperature in the positive pressure circulating pipe I, the drying process enters a speed reduction drying period, the water content of materials in the machine is generally lower than 15%, the fluidization performance of the materials is improved, and a good fluidization state can be formed without too high wind speed;
s40305, judging the moisture content in the material: the drying speed of the device is so high that the moisture content of the materials in the machine cannot be determined by sampling detection; after the operation process enters a deceleration drying section, the temperature in the machine gradually rises, the humidity is continuously reduced, the mapping relation between the water content of the material in the machine and the temperature, the humidity, the current of the fan and the water content of the material can be obtained by comparing and observing the air flow discharged by a branch of the dust remover and the water content of the material at different positions in the machine, the water content of the material in the machine is judged by the relation, and when the water content of the material in the machine meets the requirement, the drying is finished;
s5, stopping the machine: after the operation is finished, a discharge valve on the cyclone dust collector is opened, the rotating speed of the fan is adjusted to enable the working current of the fan to reach 100% of the rated current, the circulating channel is swept at the maximum wind speed for 10 minutes, after the sweeping is finished, the power supply frequency of the fan is adjusted to be the same as the power supply frequency, the fan, the air heater, the molecular sieve dryer, the back-blowing device, the discharge valve on the cyclone dust collector and the discharge valve on the discharge tee joint are closed, and the power supply is cut off to stop the.
The invention relates to a method for drying instant coffee or Pu 'er tea, which utilizes the processing equipment of medicine and edible materials capable of reducing the loss of volatile components in the materials, which is designed according to the patent claim 3 of the processing equipment of medicine and edible materials, to dry the instant coffee or Pu' er tea.
Drawings
FIG. 1 is a structural diagram of a "solid-liquid medicine and edible material processing apparatus" designed according to the patent "medicine and edible material processing apparatus".
FIG. 2 is a block diagram of a "pharmaceutical and edible material processing apparatus capable of reducing the loss of volatile components in a material" designed according to the patent "pharmaceutical and edible material processing apparatus".
Detailed Description
A method for drying instant coffee or Pu ' er tea, which adopts a medicine and edible material processing device designed according to a patent ' medicine and edible material processing device ' capable of reducing the loss of volatile components in materials ' to dry coffee or Pu ' er tea liquid, and is carried out according to the following steps:
s1, preprocessing: making coffee or Pu' er tea into liquid;
s2, equipment configuration: the pipeline of the fan is configured to ensure that the air speed of air load in the positive pressure circulating pipe I is more than 36 m/s:
s3, starting the equipment: switching on a power supply, starting a fan, a molecular sieve dryer, a back blowing device of a bag type dust collector and an air heater, and adjusting the temperature of hot air output by the air heater to ensure that the temperature in the positive pressure circulating pipe I is not more than 60 ℃; after the fan is started, the rotating speed of the fan is adjusted to enable the working current of the fan to be 40-75% of the rated current; after the equipment is started, the opening degree of a branch adjusting valve of the dust remover is adjusted to 10-25%;
s4, operation process:
s401, feeding: adding the coffee or Pu' er tea liquid obtained by SI treatment into equipment at a constant speed by using an atomizer, controlling the feeding speed to adapt to the evaporation capacity of the equipment, so that no drop-shaped juice appears at an ash discharge port of a cyclone dust collector, the feeding speed is not too low, and the feeding is stopped when the working current of a fan exceeds 98 percent of the rated current of the fan;
s402, operation in the operation process and the process;
s40201, drying process: after the coffee or Pu' er tea liquid is dispersed into particles by an atomizer, the particles form a fluidized state under the action of a fan and high-speed airflow generated by the fan and circularly flow in a circulating channel at a high speed, and the moisture in the particles is quickly volatilized and is discharged by passing through a cloth bag of a bag type dust collector along with the airflow;
s40202, dehydration of the process medium: tail gas discharged by the bag type dust collector is dehydrated by a molecular sieve dryer and then enters an air heater to be heated to be used as inlet air flow, and the moisture content in the inlet air flow is lower than that of natural air, so that the vaporization speed of moisture in materials is accelerated;
s40203, internal circulation: most materials are separated by the cyclone dust collector and enter the negative pressure circulating pipe together with a small part of air flow through the dust discharging port for circulating drying; a small part of material entering the branch of the dust remover along with most of air flow is separated out and then enters the negative pressure circulating pipe along with a small part of air flow through the regulating valve;
s40204, supplement feeding: along with the reduction of the moisture, the reduction of the density of the fluidized material can cause the load of the fan to be reduced, when the working current of the fan is reduced to be below 88% of the rated current, a feeding valve is opened to supplement feeding, and the feeding amount is controlled to be within 98% of the rated current of the fan;
the operation process needs 2-5 times of supplementary feeding, wherein the feeding speed is too slow when the feeding speed is less than 2 times, the feeding speed is too fast when the feeding speed is more than 5 times, and the time interval from the first feeding to the first supplementary feeding is called a feeding period:
s40205, discharging: after the time of a charging period, when the current reduction amplitude of the fan is less than 4% of the rated current, supplementary charging is not carried out any more, and when the water content of the materials in the machine meets the requirement, a discharging valve on the cyclone dust collector and a discharging valve on a dust collector branch discharging tee joint are opened and an adjusting valve is closed to discharge the materials in the machine;
after the built-in material is discharged, the regulating valve is opened to the original opening degree, the discharge valve on the cyclone dust collector and the discharge valve on the dust collector branch discharge tee joint are closed, and S401, S40204 and S40205 are sequentially carried out again, so that the operation is repeatedly circulated:
s403, adjusting process parameters:
s40301, controlling the water content of the material entering the branch of the dust collector, and taking the principle that the material is not adhered to a cloth bag of the bag type dust collector as follows: the water content of the material entering the branch of the dust remover can be adjusted by adjusting the rotating speed of the fan, the atomizing quality, the feeding speed and the feeding amount and changing the diameter of the ash discharging port of the cyclone dust remover,
s40302, adjusting a back-blowing device: observing the pressure condition of the branch of the dust remover in the operation process, and timely adjusting the back flushing period, the back flushing time and the back flushing air source pressure of the back flushing device to enable the pressure in the branch of the dust remover to be in a state as low as possible;
s40303, adjusting the material fluidization state: observing the fluidization state of the material in the operation process, and adjusting the rotating speed of the fan and the feeding amount to enable the material to be in a good fluidization state;
s40304, adjusting the temperature of hot air output by the air heater, observing the temperature state in the positive pressure circulating pipe I in the operation process, and timely adjusting the temperature of the hot air output by the air heater to be below 60 ℃: when the air heater stops heating and cannot control the temperature in the positive pressure circulating pipe I to be below 60 ℃, reducing the rotating speed of the fan and reducing the heat converted from the kinetic energy of the fan for control;
when the rotating speed of the fan needs to be reduced to control the temperature in the positive pressure circulating pipe I, the drying process enters a speed reduction drying period, the water content of materials in the machine is generally lower than 15 percent at the moment, the fluidization performance of the materials is improved, and a good fluidization state can be formed without too high wind speed:
s40305, judging the moisture content in the material: the drying speed of the device is so high that the moisture content of the materials in the machine cannot be determined by sampling detection; after the operation process got into the dry section of deceleration, the built-in temperature can rise gradually, and humidity then constantly reduces, through the contrast observation to dust remover branch road exhaust gas and built-in different position temperature, humidity and fan current, feeding volume and discharge material moisture content, can obtain the mapping relation of built-in material moisture content and temperature, humidity and fan current, feeding volume, judges the moisture content of built-in material with the help of this relation: when the water content of the materials in the machine meets the requirement, the drying is finished;
s5, stopping the machine: after the operation is finished, a discharge valve on the cyclone dust collector is opened, the rotating speed of the fan is adjusted to enable the working current of the fan to reach 100% of the rated current, the circulating channel is swept at the maximum wind speed for 10 minutes, after the sweeping is finished, the power supply frequency of the fan is adjusted to be the same as the power supply frequency, the fan, the air heater, the molecular sieve dryer, the back-blowing device, the discharge valve on the cyclone dust collector and the discharge valve on the discharge tee joint are closed, and the power supply is cut off to stop the.
Claims (1)
1. A method for drying instant coffee or Pu 'er tea, adopts' medicinal and edible material processing equipment capable of reducing the loss of volatile components in the material 'to dry and process coffee or Pu' er tea liquid, and the equipment consists of a fan, a positive pressure circulating pipe I, a cyclone dust collector, a positive pressure circulating pipe II, a dust collector branch, a negative pressure circulating pipe and an adjusting device; the positive pressure circulating pipe I and the positive pressure circulating pipe II are pipelines; the diameter of an ash discharge port of the cyclone dust collector is one fourth of that of an air inlet, a discharge port is further arranged on the cyclone dust collector, a discharge valve is arranged on the discharge port, an inlet of the cyclone dust collector is connected with an outlet of the positive pressure circulating pipe I, and an air outlet of the cyclone dust collector is connected with an inlet of the positive pressure circulating pipe II; the dust remover branch is formed by sequentially connecting a first bag type dust remover, a second bag type dust remover, a discharge tee joint and a regulating valve, wherein the first bag type dust remover and the second bag type dust remover are pulse bag type dust removers, each pulse bag type dust remover comprises a shell, an air inlet pipe, an ash discharge pipe, a filter material and a back flushing device, the shell is of a cylinder structure, one end of the shell is provided with the air inlet pipe, the other end of the shell is provided with the ash discharge pipe, one end of the air inlet pipe is arranged outside the shell, the other end of the air inlet pipe extends into the shell, one end of the ash discharge pipe is arranged outside the shell, the other end of the ash discharge pipe; the filter material is tubular, two ends of the filter material are not sealed, the filter material is arranged in the shell, one end of the filter material is sleeved on the air inlet pipe by a clamp, and the other end of the filter material is sleeved on the ash discharge pipe by the clamp; the back-blowing device consists of a back-blowing valve, a back-blowing tee joint and an exhaust valve, wherein one port of the back-blowing tee joint is connected with an exhaust port, the other port of the back-blowing tee joint is connected with the exhaust valve, the other port of the back-blowing tee joint is connected with the back-blowing valve, the other end of the back-blowing valve is connected with a high-pressure air source, a discharge valve is arranged on the third port of the discharge tee joint, the inlet of the first bag type dust collector is the inlet of a dust collector branch, the outlet of the regulating valve is the outlet of the dust collector branch, and the inlet of the; the negative pressure circulating pipe is a pipeline, the head end of the negative pressure circulating pipe is an inlet, the tail end of the negative pressure circulating pipe is an outlet, a cyclone dust collector ash discharge port interface, a dust collector branch interface and two feeding device interfaces are arranged between the outlet and the inlet, a feeding valve is arranged on one feeding device interface, an atomizer is arranged on the other feeding device interface, the cyclone dust collector ash discharge port interface is connected with an ash discharge port of a cyclone dust collector, and the dust collector branch interface is connected with a dust collector branch outlet; the adjusting device comprises an inlet air flow temperature adjusting device and a fan rotating speed adjusting device, the inlet air flow temperature adjusting device controls the temperature of inlet air flow by utilizing an output signal of a temperature sensor arranged at an outlet of the positive pressure circulating pipe I or on the positive pressure circulating pipe II so that the temperature in the fan does not exceed a set temperature, and the fan rotating speed adjusting device is used for adjusting the rotating speed of the fan so as to control the heat converted from the kinetic energy of the fan and ensure that the temperature in the fan does not exceed the set temperature; the outlet of the negative pressure circulating pipe, the inlet of the fan, the outlet of the fan and the inlet of the positive pressure circulating pipe I are connected in sequence; the equipment also comprises a molecular sieve dryer and an air heater, wherein the outlet of the molecular sieve dryer is connected with the inlet of the air heater, the air outlet of the air heater is connected with the inlet of the negative pressure circulating pipe, the temperature of hot air output by the air heater is controlled by the adjusting device, and the air inlet of the molecular sieve dryer is connected with the air outlet of the branch of the dust remover through an air inlet pipeline; the outlet of the molecular sieve dryer is also provided with an interface and a gas supply interface which are connected with a back-blowing air source pressurizing device, and the molecular sieve in the molecular sieve dryer is a molecular sieve with an adsorption effect on water;
the method comprises the following steps:
s1, preprocessing: making coffee or Pu' er tea into liquid;
s2, equipment configuration: the pipeline of the fan is configured to ensure that the air speed of air load in the positive pressure circulating pipe I is more than 36 m/s;
s3, starting the equipment: switching on a power supply, starting a fan, a molecular sieve dryer, a back blowing device of a bag type dust collector and an air heater, and adjusting the temperature of hot air output by the air heater to ensure that the temperature in the positive pressure circulating pipe I is not more than 60 ℃; after the fan is started, the rotating speed of the fan is adjusted to enable the working current of the fan to be 40-75% of the rated current; after the equipment is started, the opening degree of a branch adjusting valve of the dust remover is adjusted to 10-25%;
s4, operation process:
s401, feeding: adding the coffee or Pu' er tea liquid obtained by the S1 treatment into equipment at a constant speed by using an atomizer, controlling the feeding speed to be adapted to the evaporation capacity of the equipment, so that no drop-shaped juice appears at an ash discharge port of a cyclone dust collector, the feeding speed is not too low, and the feeding is stopped when the working current of a fan exceeds 98 percent of the rated current of the fan;
s402, operation process and operation in the process:
s40201, drying process: after the coffee or Pu' er tea liquid is dispersed into particles by an atomizer, the particles form a fluidized state under the action of a fan and high-speed airflow generated by the fan and circularly flow in a circulating channel at a high speed, and the moisture in the particles is quickly volatilized and is discharged by passing through a cloth bag of a bag type dust collector along with the airflow;
s40202, dehydration of the process medium: tail gas discharged by the bag type dust collector is dehydrated by a molecular sieve dryer and then enters an air heater to be heated to be used as inlet air flow, and the moisture content in the inlet air flow is lower than that of natural air, so that the vaporization speed of moisture in materials is accelerated;
s40203, internal circulation: most materials are separated by the cyclone dust collector and enter the negative pressure circulating pipe together with a small part of air flow through the dust discharging port for circulating drying; a small part of material entering the branch of the dust remover along with most of air flow is separated out and then enters the negative pressure circulating pipe along with a small part of air flow through the regulating valve;
s40204, supplement feeding: along with the reduction of the moisture, the reduction of the density of the fluidized material can cause the load of the fan to be reduced, when the working current of the fan is reduced to be below 88% of the rated current, a feeding valve is opened to supplement feeding, and the feeding amount is controlled to be within 98% of the rated current of the fan;
in the operation process, 2-5 times of supplementary feeding are needed, wherein the feeding speed is too slow when the feeding speed is less than 2 times, the feeding speed is too fast when the feeding speed is more than 5 times, and the time interval from the first feeding to the first supplementary feeding is called a feeding period;
s40205, discharging: after the time of a charging period, when the current reduction amplitude of the fan is less than 4% of the rated current, supplementary charging is not carried out any more, and when the water content of the materials in the machine meets the requirement, a discharging valve on the cyclone dust collector and a discharging valve on a dust collector branch discharging tee joint are opened and an adjusting valve is closed to discharge the materials in the machine;
after the materials in the machine are discharged, opening the regulating valve to the original opening degree, closing the discharge valve on the cyclone dust collector and the discharge valve on the dust collector branch discharge tee joint, and sequentially repeating S401, S40204 and S40205, thus repeatedly performing cycle operation;
s403, adjusting process parameters:
s40301, controlling the water content of the material entering the branch of the dust collector on the principle that the material is not adhered to a cloth bag of the bag type dust collector; the water content of the material entering the branch of the dust remover can be adjusted by adjusting the rotating speed of the fan, the atomizing quality, the feeding speed and the feeding amount and changing the diameter of the ash discharging port of the cyclone dust remover,
s40302, adjusting a back-blowing device: observing the pressure condition of the branch of the dust remover in the operation process, and timely adjusting the back flushing period, the back flushing time and the back flushing air source pressure of the back flushing device to enable the pressure in the branch of the dust remover to be in a state as low as possible;
s40303, adjusting the material fluidization state: observing the fluidization state of the material in the operation process, and adjusting the rotating speed of the fan and the feeding amount to enable the material to be in a good fluidization state;
s40304, adjusting the temperature of hot air output by the air heater, observing the temperature state in the positive pressure circulating pipe I in the operation process, and timely adjusting the temperature of the hot air output by the air heater to be below 60 ℃: when the air heater stops heating and cannot control the temperature in the positive pressure circulating pipe I to be below 60 ℃, reducing the rotating speed of the fan and reducing the heat converted from the kinetic energy of the fan for control;
when the rotating speed of the fan needs to be reduced to control the temperature in the positive pressure circulating pipe I, the drying process enters a speed reduction drying period, the water content of materials in the machine is generally lower than 15%, the fluidization performance of the materials is improved, and a good fluidization state can be formed without too high wind speed;
s40305, judging the moisture content in the material: the drying speed is so fast that the moisture content of the materials in the machine cannot be determined by sampling detection; after the operation process got into the dry section of deceleration, the built-in temperature can rise gradually, and humidity then constantly reduces, through the contrast observation to dust remover branch road exhaust gas and built-in different position temperature, humidity and fan current, feeding volume and discharge material moisture content, can obtain the mapping relation of built-in material moisture content and temperature, humidity and fan current, feeding volume, judges the moisture content of built-in material with the help of this relation: when the water content of the materials in the machine meets the requirement, the drying is finished;
s5, stopping the machine: after the operation is finished, a discharge valve on the cyclone dust collector is opened, the rotating speed of the fan is adjusted to enable the working current of the fan to reach 100% of the rated current, the circulating channel is swept at the maximum wind speed for 10 minutes, after the sweeping is finished, the power supply frequency of the fan is adjusted to be the same as the power supply frequency, the fan, the air heater, the molecular sieve dryer, the back-blowing device, the discharge valve on the cyclone dust collector and the discharge valve on the discharge tee joint are closed, and the power supply is cut off to stop the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410838813.8A CN105795038B (en) | 2014-12-30 | 2014-12-30 | Method for drying instant coffee or Pu' er tea |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410838813.8A CN105795038B (en) | 2014-12-30 | 2014-12-30 | Method for drying instant coffee or Pu' er tea |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105795038A CN105795038A (en) | 2016-07-27 |
| CN105795038B true CN105795038B (en) | 2020-10-02 |
Family
ID=56980746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410838813.8A Active CN105795038B (en) | 2014-12-30 | 2014-12-30 | Method for drying instant coffee or Pu' er tea |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105795038B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112524902B (en) * | 2020-12-09 | 2021-12-28 | 江西倍得力生物工程有限公司 | Spray drying device is used in black-bone chicken peptide powder production |
| CN115155196B (en) * | 2022-06-29 | 2023-06-13 | 广东众大智能科技有限公司 | Multi-channel negative pressure continuous feeding machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AP3957A (en) * | 2010-11-26 | 2016-12-23 | Unilever Plc | Process for preparing tea products |
| CN103918805A (en) * | 2013-01-14 | 2014-07-16 | 董骥 | Manufacturing process of tea |
| KR101281035B1 (en) * | 2013-03-28 | 2013-07-09 | 이예진 | A zizania latifolia tea and the method thereof |
| CN203424242U (en) * | 2013-08-29 | 2014-02-12 | 宜昌萧氏茶叶集团有限公司 | Automatic production line of tea |
| CN103720725A (en) * | 2013-12-31 | 2014-04-16 | 昆明特康科技有限公司 | Circulating fluidized bed equipment and pine pollen production method thereof |
| CN103705955B (en) * | 2013-12-31 | 2016-05-11 | 昆明特康科技有限公司 | A kind of circulating fluidised bed apparatus and for the method for pollen pini sterilizing removal of impurities |
-
2014
- 2014-12-30 CN CN201410838813.8A patent/CN105795038B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105795038A (en) | 2016-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104764298B (en) | Circulating fluidised bed apparatus | |
| CN110624646A (en) | Method for initially processing Chinese medicinal material in producing area | |
| CN105795038B (en) | Method for drying instant coffee or Pu' er tea | |
| CN104857047B (en) | A method for processing Notoginseng radix | |
| CN107990688A (en) | Moist material low-temperature negative-pressure drying means and its equipment | |
| CN104880029A (en) | Closed-cycle fluidized bed equipment and application method thereof | |
| CN205627126U (en) | Centrifugal spray drier is used in processing of blood cell albumen powder | |
| CN104855509B (en) | Method for preparing milk powder from dry emulsion | |
| CN105011043B (en) | A method for producing fruit powder and vegetable powder | |
| CN104855887B (en) | Production method of potato powder | |
| CN101919443B (en) | Absorption type low-temperature drying tower | |
| CN104880031A (en) | Closed-circulation fluidized-bed equipment with continuous discharge function and method for applying closed-circulation fluidized-bed equipment | |
| CN104856198B (en) | Method for drying seasoning food material | |
| CN104585599B (en) | Production method of fresh and tender corn flour | |
| CN109042867A (en) | A kind of grain dryer of duration from pan feeding | |
| CN104855498A (en) | Method for drying and sterilization of spiral seaweed | |
| CN104896877A (en) | Ultrasonic atomizing and pulse microwave vacuum drying device for liquid material and drying method | |
| CN208653172U (en) | A kind of drier for Chinese medicine | |
| CN103705957B (en) | Recirculating fluidized bed ultraviolet sterilization equipment and for the sterilizing methods of pollen pini | |
| CN207779056U (en) | Turbulent eddy flow negative pressure drying machine | |
| CN202774063U (en) | Tropics and subtropics fruit and vegetable drying equipment | |
| CN207779058U (en) | Moist material low-temperature negative-pressure drying equipment | |
| CN201361584Y (en) | Tail gas collecting device for corn steep liquor dry powders | |
| CN204202338U (en) | A kind of for powdery Chinese medicine classification drying unit | |
| CN201585382U (en) | Absorption low-temperature drying tower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200424 Address after: 325024 Fukang East Road, Yuefang Village, Yongxing Street, Longwan District, Wenzhou City, Zhejiang Province Applicant after: Zhejiang Yunjie Technology Co.,Ltd. Address before: 650200, Kunming District, Yunnan City, Yinhai Province, Guandu area 15, 1 units, 6, 601 rooms Applicant before: KUNMING TEKANG TECHNOLOGY Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240316 Address after: Unit 802, Building 37, Olive Valley, Century Peninsula, Hehong Road, Xishan District, Kunming City, Yunnan Province, 650000 Patentee after: Yunnan Jiaxi Hanma Technology Co.,Ltd. Country or region after: China Address before: 325024 Fukang East Road, Yuefang Village, Yongxing Street, Longwan District, Wenzhou City, Zhejiang Province Patentee before: Zhejiang Yunjie Technology Co.,Ltd. Country or region before: China |