CN211133027U

CN211133027U - Energy-saving closed boiling drying system

Info

Publication number: CN211133027U
Application number: CN201921509291.1U
Authority: CN
Inventors: 吕江强; 陆晓峰; 朱晨波
Original assignee: Jiangyin Jirui Machine Manufacturing Co ltd
Current assignee: Jiangyin Jirui Machine Manufacturing Co ltd
Priority date: 2019-09-11
Filing date: 2019-09-11
Publication date: 2020-07-31
Anticipated expiration: 2029-09-11

Abstract

The utility model relates to an energy-saving closed boiling drying system belongs to energy comprehensive utilization technical field. The fluidized bed furnace comprises a circulating fan, a fluidized bed and a heater, wherein bottom powder is arranged in the fluidized bed, an air inlet of the heater is communicated with an air outlet of the circulating fan through a pipeline, and an inert gas inlet is formed in the pipeline; the air outlet of the heater is communicated with the air inlet of the fluidized bed; a spraying and atomizing device is arranged in the fluidized bed; the air outlet of the boiling bed is communicated with the high-temperature air inlet of the heat pump, the low-temperature air outlet of the heat pump is communicated with the air inlet of the condenser, the air outlet of the condenser is communicated with the low-temperature air inlet of the heat pump, and the high-temperature air outlet of the heat pump is communicated with the air inlet of the circulating fan. According to the application, the plant extract is dried by adopting high-temperature inert gas in a closed environment, active ingredients in the plant extract are effectively prevented from being oxidized, retention of volatile oil to the maximum extent is guaranteed, and a small amount of volatile oil is volatilized. In addition, heat exchange is realized through the heat pump, and energy is saved.

Description

Energy-saving closed boiling drying system

Technical Field

The utility model relates to an energy-saving closed boiling drying system belongs to energy comprehensive utilization technical field.

Background

The plant extract is a product formed by taking plants as raw materials, directionally obtaining and concentrating one or more active ingredients in the plants through physical and chemical extraction and separation processes according to the requirements of the application of an extracted final product, and not changing the structures of the active ingredients. According to different components of the extracted plants, glycoside, acid, polyphenol, polysaccharide, terpenoid, flavone, alkaloid and the like are formed; according to different properties, the plant oil can be divided into vegetable oil, extract, powder, crystalline lens and the like.

The tea extract is an active component extracted from tea tablet, and mainly comprises tea polyphenol (catechin), caffeine, aromatic oil, water, minerals, pigment, carbohydrate, protein, amino acids, vitamins, etc. Wherein tea polyphenol is the main effective component, and aromatic oil is the main component affecting the external quality.

The traditional Chinese medicine extract is a traditional Chinese medicine extract, is mucus at normal temperature, is commonly used for relieving the pain of human bodies, and is widely used in medical treatment of various departments. Volatile oil of Chinese medicinal materials (such as herba Menthae, cortex moutan, and herba Houttuyniae) can volatilize during drying; while the active ingredients of heat-sensitive Chinese medicines (such as radix Salviae Miltiorrhizae, radix rehmanniae, and radix Angelicae sinensis) are easily oxidized during drying.

When plant extracts are dried by means of air-flow drying (air-flow drying, ebullated-bed drying, etc.), there are problems with oxidation and oil evaporation. When the plant extract is dried by vacuum drying (vacuum oven, rake dryer, etc.), the problem of oil evaporation is more serious, although there is no problem of oxidation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an energy-saving closed fluidized drying system is provided to above-mentioned prior art, effectively prevents that the active ingredient of plant extract from not by the oxidation, reduces volatile oil and volatilizes.

The utility model provides a technical scheme that above-mentioned problem adopted does: an energy-saving closed boiling drying system comprises a circulating fan, a boiling bed and a heater, wherein bottom powder is arranged in the boiling bed, an air inlet of the heater is communicated with an air outlet of the circulating fan through a pipeline, and an inert gas inlet is formed in the pipeline; the gas outlet of the heater is communicated with the gas inlet of the fluidized bed, and heated inert gas enters through the gas inlet of the fluidized bed and contacts with the bottom powder to fluidize the bottom powder; a spraying and atomizing device is arranged in the fluidized bed, atomizes the plant extracting solution and sprays the plant extracting solution into the fluidized bed, and the plant extracting solution and the fluidized bed bottom powder are fully mixed; the air outlet of the boiling bed is communicated with the high-temperature air inlet of the heat pump, the low-temperature air outlet of the heat pump is communicated with the air inlet of the condenser, the air outlet of the condenser is communicated with the low-temperature air inlet of the heat pump, and the high-temperature air outlet of the heat pump is communicated with the air inlet of the circulating fan.

The spraying and atomizing device is a spray gun.

And a filter is arranged between the heater and the boiling bed to filter the heated gas.

And a dust remover is arranged between the air outlet of the fluidized bed and the high-temperature air inlet of the heat pump.

And the water tank is communicated with the water outlet of the condenser.

Compared with the prior art, the utility model has the advantages of: an energy-saving closed boiling drying system is characterized in that high-temperature inert gas is introduced into a boiling bed, a soaked plant extract fully mixed with a plant extracting solution is dried to form solid solution particles and high-temperature wet inert gas, the plant extract is dried by adopting the inert gas in a closed environment, and active ingredients of the plant extract are effectively prevented from being oxidized. The volatile oil is not volatilized after being volatilized to saturation, so that the volatile oil is kept to the maximum extent, and the volatile oil is volatilized in a small amount. In addition, the high-temperature wet inert gas and the low-temperature inert gas exchange heat fully in the heat pump, so that waste heat recovery is realized, the heater is more energy-saving, and energy is saved; but also improves the efficiency of the condenser.

Drawings

Fig. 1 is a schematic view of an energy-saving closed fluidized drying system according to an embodiment of the present invention;

in the figure, 1 a circulating fan, 2 a heater, 3 a filter, 4 a three-way pipeline, 5 a boiling bed, 6 a spray gun, 7 a dust remover, 8 a heat pump and 9 a condenser are arranged.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1, the energy-saving closed boiling drying system in this embodiment includes a circulating fan 1, a boiling bed 5, and a heater 2, a three-way pipeline 4 is respectively connected to an air inlet of the heater 2, an air outlet of the circulating fan 1, and an inert gas inlet, inert gas flows into the three-way pipeline 4 through the inert gas inlet, inert gas in the three-way pipeline 4 is blown to the heater 2 through the circulating fan 1, and the heater 2 heats the inert gas. The air outlet of the heater 2 is communicated with the air inlet of the boiling bed 5, a filter 3 is arranged between the heater 2 and the boiling bed 5, and high-temperature inert gas flows into the boiling bed 5 after being filtered. The bottom powder is placed on the bed layer of the fluidized bed 5, and hot inert gas enters the bed layer through the distribution plate of the fluidized bed 5 to contact with the bottom powder and fluidize the bottom powder. A spray gun 6 is arranged in the fluidized bed 5, a plant extracting solution is arranged in the spray gun 6, the atomized plant extracting solution is sprayed into the fluidized bed 5 and is fully mixed with the fluidized bed powder, the soaked bed powder is dried by high-temperature inert gas to form solid solution particles and high-temperature wet inert gas, the solid solution particles are discharged from a discharge port of the fluidized bed 5, and the high-temperature wet inert gas is discharged from a gas outlet of the fluidized bed 5. The gas outlet of the fluidized bed 5 is communicated with the gas inlet of the secondary dust remover 7, the high-temperature wet inert gas flows into the secondary dust remover 7 through the gas outlet of the fluidized bed 5 for dust removal, dust is trapped in the secondary dust remover 7, and the high-temperature wet inert gas after dust removal is discharged through the gas outlet of the secondary dust remover 7. The gas outlet of the secondary dust remover 7 is communicated with the high-temperature gas inlet of the heat pump 8, the low-temperature gas outlet of the heat pump 8 is communicated with the gas inlet of the condenser 9, the condenser 9 condenses the low-temperature wet inert gas to form low-temperature inert gas and water, and the water outlet of the condenser 9 is communicated with the water storage tank and used for collecting the water. The air outlet of the condenser 9 is communicated with the low-temperature air inlet of the heat pump 8, and the high-temperature air outlet of the heat pump 8 is communicated with the air inlet of the circulating fan 1.

The wet inert gas of high temperature that 8 high temperature air inlets of heat pump flowed in carries out the heat transfer with the low temperature inert gas that 8 low temperature air inlets of heat pump flowed in, and make full use of waste heat recovery forms wet inert gas of low temperature and high temperature inert gas, and wet inert gas of low temperature flows into condenser 9 in through 8 low temperature gas outlets of heat pump, and condenser 9 condenses wet inert gas of low temperature, has improved the efficiency of condenser 9. High-temperature inert gas flows into the circulating fan 1 through a high-temperature gas outlet of the heat pump 8, preheating and recycling of the inert gas are achieved, the temperature of the inert gas entering the heater 2 is increased, the heater 2 is more energy-saving, and energy is saved.

Taking the base powder as a dried tea extract or a mixture of the tea extract and auxiliary materials thereof, the plant extract as a tea extract, and the inert gas as nitrogen as an example. The working steps are as follows:

1. placing dried folium Camelliae sinensis extract in bed layer of fluidized bed 5.

2. Unheated nitrogen gas having a purity of 99% is introduced so that the air in the bubbling bed 5 is replaced with nitrogen gas.

3. Nitrogen gas was blown into the heater 2 by the circulating fan 1 to heat it, so that the nitrogen gas heating reached 65 ℃.

4. High temperature nitrogen is filtered by the filter 3 and then blown into the fluidized bed 5.

5. Boiling the tea extract in the boiling bed 5 by high-temperature nitrogen, simultaneously spraying the atomized tea extract into the boiling bed 5 by the spray gun 6, fully mixing with the boiled tea extract, and drying the soaked tea extract by high-temperature nitrogen for 1.5h to form solid solution particles and high-temperature wet nitrogen.

6. Discharging the solid solution grains through a discharge port of the boiling bed 5, wherein the amount of the solid solution grains is 2 times of that of the tea extract; the high-temperature wet nitrogen is introduced into the secondary dust remover 7 through the air outlet of the fluidized bed 5 for dust removal, and the dust in the high-temperature wet nitrogen is retained in the secondary dust remover 7.

7. The high-temperature wet nitrogen after dust removal flows into the heat pump 8, and the high-temperature wet nitrogen and the low-temperature nitrogen fully exchange heat to form low-temperature wet nitrogen and high-temperature nitrogen; the low-temperature wet nitrogen flows into the condenser 9 for condensation to form low-temperature nitrogen and water; high-temperature nitrogen flows into the circulating fan 1 for recycling.

High-temperature nitrogen is introduced into the fluidized bed 5 to dry the tea extract, so that the tea extract is dried by adopting the nitrogen in a closed environment, and the tea polyphenol in the tea extract is effectively prevented from being oxidized. The fragrant oil is not volatilized after being volatilized to saturation, so that the fragrant oil is kept to the maximum extent, and the fragrant oil is volatilized in a small amount.

The above-mentioned closed boiling drying method is also applicable to Chinese medicine extract. The active ingredients of the traditional Chinese medicine extract are prevented from being oxidized, the volatile oil is kept to the maximum extent, and the volatile oil is volatilized in a small amount.

In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. An energy-saving closed boiling drying system which is characterized in that: the fluidized bed furnace comprises a circulating fan, a fluidized bed and a heater, wherein bottom powder is arranged in the fluidized bed, an air inlet of the heater is communicated with an air outlet of the circulating fan through a pipeline, and an inert gas inlet is formed in the pipeline; the gas outlet of the heater is communicated with the gas inlet of the fluidized bed, and heated inert gas enters through the gas inlet of the fluidized bed and contacts with the bottom powder to fluidize the bottom powder; a spraying and atomizing device is arranged in the fluidized bed, atomizes the plant extracting solution and sprays the plant extracting solution into the fluidized bed, and the plant extracting solution and the fluidized bed bottom powder are fully mixed; the air outlet of the boiling bed is communicated with the high-temperature air inlet of the heat pump, the low-temperature air outlet of the heat pump is communicated with the air inlet of the condenser, the air outlet of the condenser is communicated with the low-temperature air inlet of the heat pump, and the high-temperature air outlet of the heat pump is communicated with the air inlet of the circulating fan.

2. An energy saving closed boiling drying system according to claim 1, wherein: the spraying and atomizing device is a spray gun.

3. An energy saving closed boiling drying system according to claim 1, wherein: and a filter is arranged between the heater and the boiling bed to filter the heated gas.

4. An energy saving closed boiling drying system according to claim 1, wherein: and a dust remover is arranged between the air outlet of the fluidized bed and the high-temperature air inlet of the heat pump.

5. An energy saving closed boiling drying system according to claim 1, wherein: and the water tank is communicated with the water outlet of the condenser.