Solid oxidation polymerization reaction kettle for edible theabrownin

Abstract

The utility model relates to a solid oxidation polymerization reaction kettle for edible theabrownin, which is characterized in that an air supply pipe and a water supply pipe are arranged in the reaction kettle, a plurality of water mist nozzles are arranged on the water supply pipe, a plurality of layers of material boxes are further arranged in the reaction kettle, and a plurality of conical bowls are arranged in each layer of material box. The device has the beneficial effects that the conventional structure of oxidative polymerization reaction equipment is broken through, the conical bowl is hung in an oxygen environment, and tea polyphenol is subpackaged in the conical bowl and can be in contact with water mist to carry out oxidative polymerization reaction. The reaction is uniform and sufficient, various components of the tea polyphenol are all converted into single theabrownin, the product yield is high, and the quality is good. As no water solution hinders oxygen, the ambient air can replace oxygen to meet the reaction requirements. Atomized water is used for replacing an aqueous solution, so that the water consumption is greatly reduced, and the dehydration cost and the wastewater treatment cost of the product are greatly reduced. Stirring is not needed, so that power consumption is greatly reduced. No chemical solvent is used, no solvent residue exists, and the product is safe and reliable, so that conditions are provided for large-scale production of theabrownin.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of tea product production equipment, namely a kind of edible tea brown solid oxidation polymerization reaction kettle. BACKGROUND

[0002] Theabrownine (TB) is a derivative of polyphenols in tea. Recent studies have found that theabrownine has many health benefits, such as lowering blood sugar, blood lipids, blood pressure, and uric acid, as well as antioxidant and anti-tumor effects.

[0003] Currently, the production process of theabrownine mainly involves the oxidation polymerization reaction of tea polyphenols in tea to convert catechins, theanine, theaflavins, and thearubins into theabrownine. In this reaction, tea polyphenols are first prepared into an aqueous solution and mixed with oxygen at a high temperature to convert tea polyphenols into theabrownine. The amount of water used to prepare the tea polyphenol solution is several times or even hundreds of times the mass of tea polyphenols, resulting in high costs for water, dehydration, and wastewater treatment. Since the specific gravity of oxygen is much lower than that of water, it is difficult to automatically enter and stay in water. Therefore, mechanical stirring is required to increase the contact between the aqueous solution and oxygen. However, mechanical stirring not only consumes a large amount of power but also results in poor uniformity of the reaction. Stirring also disrupts the stability of the solution and increases the difficulty of the reaction. Therefore, it is difficult to completely convert theanine, theaflavins, and thearubins in tea polyphenols into theabrownine. The existing products are mainly tea pigments containing theaflavins, thearubins, and theabrownine, making it difficult to produce high-purity theabrownine. Research results show that theabrownine is the final product of theaflavins and thearubins, has a stable structure, and has good health benefits. Therefore, we hope to obtain high-purity theabrownine. To this end, many processes use chemical solvents to extract other components. This not only increases costs, reduces the yield of theabrownine, but also causes chemical solvent residue problems.

[0004] Although the total amount of oxygen in the air is huge and can meet the demand of oxidation polymerization reaction, the use of air increases the idle stroke of mechanical stirring and the energy consumption cost due to the low oxygen content of 21% in the air. Therefore, the current oxidation polymerization reaction of tea polyphenols can only use a large amount of high-purity oxygen, further increasing the production cost. SUMMARY

[0005] The utility model aims to provide a device that does not require the preparation of an aqueous solution, does not rely on mechanical stirring, allows tea polyphenols to stably combine with oxygen, ensures uniform and sufficient oxidation polymerization reaction, and enables more tea polyphenol raw materials to be converted into high-purity theabrownine.

[0006] The above object is achieved by the following technical solution: a solid-state oxidation polymerization reactor for edible tea-brown, characterized in that the reactor is provided with a gas supply pipe and a water supply pipe, the water supply pipe is provided with a plurality of water mist nozzles inside the reactor, and the reactor is further provided with a plurality of material boxes, each of which is provided with a plurality of conical pots.

[0007] The pot body of the conical pot is surrounded by a screen mesh that is permeable to air and water, the longitudinal section is triangular, the upper end of the pot body is an upward opening, and the sharp corner of the pot body is downward, and a leakage opening is provided at the sharp corner.

[0008] The conical pots are divided into multiple layers, the leakage opening at the lower end of the upper layer conical pot is opposite to the opening at the upper end of the lower layer conical pot, the distance between the lower end of the upper layer conical pot and the upper end of the lower layer conical pot is adjustable, and is less than or equal to the height of the self-flowing heap formed by the material flow.

[0009] A perforated pipe is inserted into the wall of the conical pot.

[0010] The conical pot is in the shape of a long groove, and the horizontal section of the reactor is rectangular.

[0011] The reactor is provided with a mixer that can mix hot water and air together.

[0012] The mixer is provided with a water tank, the upper part of the water tank penetrates through a Venturi tube, the inlet end of the Venturi tube is connected to an air pump and an air filter, the outlet end is connected to the water supply pipe of the reactor, the inlet end has a large-diameter section with a large inner diameter, the large-diameter section is connected to a tapered variable-diameter section to reduce the inner diameter, the outer side of the variable-diameter section is opposite to the suction inlet of the Venturi tube, the suction inlet is connected to a water suction pipe, and the lower end of the water suction pipe extends into the bottom of the water tank.

[0013] The water tank is provided with an electric heater.

[0014] The reactor is provided with a temperature sensor, a humidity sensor, and an air pressure sensor, the temperature sensor, the humidity sensor, and the air pressure sensor are connected to an intelligent processor, and the intelligent processor controls the air pump, the water pump, and the electric heater.

[0015] The beneficial effects of the present application are as follows: the conventional structure of the oxidation polymerization reaction equipment is broken through, the conical pots are hung in an oxygen environment, and the tea polyphenols are divided and stored in the conical pots, which can contact with water mist to perform oxidation polymerization reaction. The reaction is uniform and sufficient, and various components of tea polyphenols are all converted into single tea-brown, the product yield is high, and the quality is good. Since there is no water solution to hinder oxygen, ambient air can replace oxygen to meet the needs of the reaction. The use of atomized water instead of water solution greatly reduces the amount of water, and the dehydration cost and wastewater treatment cost of the product are greatly reduced. Without stirring, the power consumption is greatly reduced. No chemical solvent is used, there is no solvent residue, the product is safe and reliable, and thus conditions are provided for large-scale production of tea-brown. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the front view of the first embodiment;

[0017] Figure 2 is the front view of the component material box of the first embodiment;

[0018] Figure 3 is the top view of the component material box of the first embodiment;

[0019] Figure 4 is the schematic diagram of the installation of the component cone-shaped pot of the first embodiment;

[0020] Figure 5 is the schematic diagram of the improper installation of the component cone-shaped pot of the first embodiment;

[0021] Figure 6 is the front view of the first embodiment in use;

[0022] Figure 7 is the front view of the component cone-shaped pot of the second embodiment;

[0023] Figure 8 is the top view of the component cone-shaped pot of the second embodiment;

[0024] Figure 9 is the front view of the assembly of the component cone-shaped pot of the third embodiment;

[0025] Figure 10 is the top view of the assembly of the component cone-shaped pot of the third embodiment;

[0026] Figure 11 is the front view of the component mixer of the fourth embodiment;

[0027] Figure 12 is the block diagram of the intelligent control device of the fifth embodiment.

[0028] In the figure: reaction kettle 1, gas supply pipe 2, water supply pipe 3, water mist sprayer 4, material box 5, box wall 6, cone-shaped pot 7, opening 8, leakage hole 9, self-flowing pile 10, sliding angle 11, porous pipe 12, mixer 13, water tank 14, Venturi tube 15, air pump 16, filter 17, large-diameter section 18, variable-diameter section 19, suction inlet 20, suction pipe 21, electric heater 22. DETAILED DESCRIPTION

[0029] First embodiment: Figure 1 A solid-state oxidative polymerization reaction kettle for edible theabrownine is introduced, which is characterized in that: the reaction kettle 1 is provided with a gas supply pipe 2 and a water supply pipe 3, and the water supply pipe is provided with a plurality of water mist sprayers 4 inside the reaction kettle. The reaction kettle is provided with a plurality of material boxes 5, and the periphery of each layer of material box is provided with a hard box wall 6, and the material box is provided with a plurality of cone-shaped pots 7.

[0030] Combination Figure 2 , Figure 3 It can be seen that the pot body of the conical pot 7 is surrounded by a screen which is permeable to air and water, the longitudinal vertical section is triangular, the opening 8 is upward, and the sharp corner is downward, and the leakage hole 9 is opened at the sharp corner.

[0031] Combination Figure 4 , Figure 5 , Figure 6 It can be seen that the conical pot is divided into multiple layers from top to bottom, the leakage hole at the lower end of the upper layer conical pot is opposite to the opening at the upper end of the lower layer conical pot. The distance between the lower end of the upper layer conical pot and the upper end of the lower layer conical pot is ≤ the height of the self-flowing pile 10 formed by the material flow.

[0032] In use, the material enters from the opening of the upper conical pot and flows downward to enter the next conical pot through the leakage hole. In this way, it flows to the lowermost conical pot. The lowermost leakage hole is blocked by the relatively dense screen piece, and the material stops falling. Then the material will be filled into each conical pot in turn from bottom to top. A conical self-flowing pile 10 with a sharp corner upward is formed between the upper and lower adjacent conical pots.

[0033] From Figure 4 It can be seen that for a specific material, its specific gravity, smoothness and sliding friction coefficient should be determined, and the sliding angle 11 of the self-flowing pile formed by the free falling of the material should also be determined, and thus the height of the self-flowing pile should also be determined. Therefore, the bottom diameter of the self-flowing pile of the material should be equal to the diameter of the opening of the conical pot. The distance between the upper and lower conical pots should be less than or equal to the height of the self-flowing pile.

[0034] If the distance between the upper and lower opposite conical pots is greater than the height of the self-flowing pile, as shown in Figure 5 , the bottom diameter of the self-flowing pile will be greater than the upper opening diameter of the conical pot, and the material will fall off, leaving only a conical self-flowing pile with a bottom diameter equal to the upper opening diameter of the conical pot. Therefore, the distance between the lower end of the upper layer conical pot and the upper end of the lower layer conical pot should be ≤ the height of the self-flowing pile formed by the material flow.

[0035] As can be seen, if the distance between the upper and lower opposite conical pots is less than the theoretical height of the self-flowing pile, the material will not fall off. However, the amount and surface area of the material will be reduced, which is not conducive to the oxidation polymerization reaction. Therefore, we hope that the distance between the upper and lower conical pots is as close to the theoretical height of the self-flowing pile as possible.

[0036] Obviously, the height of the self-flowing pile of the material is easy to determine by observation. For different materials, the height of the self-flowing pile of the material should be determined first, and the distance between the upper and lower conical pots should be adjusted according to the determined value.

[0037] When the distance between the conical pots is appropriate and all the conical pots are filled with material, i.e. Figure 6As shown: the upper and lower vertical section of the reactor forms a plurality of diamond structure. Obviously, the material of this structure has a larger surface area, the uniform gap between the materials, the permeability condition is superior, especially conducive to receiving oxygen, moisture and heat, the process of oxidation polymerization is highly optimized.

[0038] Experiments show that, compared with the existing tea polyphenols solution oxidation polymerization reaction equipment, the water saving of the device is more than 60%, the air replaces oxygen to reduce the cost by more than 40%. Because of no stirring, and the low moisture content of the material, the drying process is simple, the wastewater treatment cost is greatly reduced, the power consumption is reduced by more than 40%, the theabrownine yield is increased by more than 10%, the theabrownine purity is more than 94%, and unexpected results are achieved.

[0039] The second embodiment: on the basis of the foregoing embodiment, the structure of the conical pot is improved. As shown in Figure 7 、 Figure 8 The wall of the conical pot 7 is inserted with a porous pipe 12. The porous pipe is a hard pipe, and a plurality of small holes that can be ventilated and permeable to water but not easy for tea polyphenol powder to enter are opened on the front pipe wall.

[0040] In use, the outside air and water can enter the material through the small holes, so that the oxidation polymerization reaction occurs in the deep part of the material. When the external oxidation polymerization reaction is completed, the reaction time inside will be greatly shortened, thereby improving the production efficiency.

[0041] The third embodiment: on the basis of the foregoing embodiment, the shape of the conical pot is improved. As shown in Figure 9 、 Figure 10 The conical pot 7 is in the shape of a long groove, that is, the upper opening of the conical pot is rectangular, and the cross section of the long groove is still triangular. The structure of this conical pot is relatively simple, and the volume is larger, which is more suitable for the needs of mass production. Of course, the shell of the reaction kettle used for this conical pot should also be a rectangular body.

[0042] The fourth embodiment: on the basis of the foregoing embodiment, the improvement is as shown in Figure 11 The reaction kettle is equipped with a water-gas-heat mixer, which can concentrate water, gas and heat into one component for control.

[0043] Obviously, there are many kinds of mixers that can control water, gas and heat, and this example only illustrates one of them. As can be seen from the figure, this mixer 13 is provided with a water tank 14, and the upper part of the water tank penetrates through a venturi tube 15.

[0044] The Venturi tube is a mature product with many structural forms; this example only illustrates a relatively simple structure. The inlet end of the Venturi tube connects to the air pump 16 and the air filter 17, while the outlet end connects to the water supply pipe 3 of the reactor. The inlet end of the Venturi tube has a large-diameter section 18, which connects to a tapered reducing section 19, where the inner diameter decreases. The outer side of the reducing section is opposite the Venturi tube's suction inlet 20, which connects to a suction pipe 21, the lower end of which extends into the bottom of the water tank.

[0045] During use, the air pump is turned on, and clean air enters the venturi tube. In the transition section, the reduced inner diameter increases the air velocity, creating a greater vacuum at the smaller inner diameter port. This draws fluid from outside the suction port into the tube. In other words, water from the tank is drawn into the venturi tube through the suction pipe. As the tube continues to move, the water and air mix thoroughly before entering the water supply pipe and being sprayed out by the water mist nozzle. Clearly, this structure allows water and air to combine better, ensuring that the sprayed air and water mist simultaneously contact the tea polyphenol particles. This synergistic effect avoids the repulsion between water and air in aqueous solutions, accelerating the oxidative polymerization reaction.

[0046] In addition, an electric heater 22 is installed on the water tank. This heater can heat the water to the temperature required for the reaction, which is more favorable for the oxidative polymerization reaction.

[0047] Fifth embodiment: Based on the foregoing embodiments, the control system is improved. For example... Figure 12 As shown, the reaction vessel is equipped with a temperature sensor, a humidity sensor, and a pressure sensor. These sensors are connected to an intelligent processor, which controls the air pump, water pump, and heater. This ensures the entire reaction process is performed at its optimal state. Of course, the intelligent control mentioned here includes automatic control and program control. Since intelligent control technology is a mature technology, it will not be described in detail.

Claims

1. A solid-state oxidation polymerization reactor for edible theabrownin, characterized in that: The reaction kettle (1) is provided with a gas supply pipe (2) and a water supply pipe (3), the water supply pipe is provided with a plurality of water mist nozzles (4) in the reaction kettle, and the reaction kettle is further provided with a plurality of material boxes (5), each material box is provided with a plurality of conical pots (7).

2. The solid-state oxidative polymerization reactor for tea polyphenols according to claim 1, characterized in that: The pot body of the conical pot (7) is surrounded by a screen with air and water permeability, the longitudinal section is triangular, the upper end of the pot body is an upward opening (8), and the sharp corner of the pot body is downward, and a leakage port (9) is arranged at the sharp corner.

3. The solid-state oxidative polymerization reactor for tea polyphenols according to claim 2, characterized in that: The conical pot (7) is divided into multiple layers from top to bottom, the leakage port (9) at the lower end of the upper conical pot is opposite to the opening (8) at the upper end of the lower conical pot, the distance between the lower end of the upper conical pot and the upper end of the lower conical pot is adjustable and is less than the height of the self-flowing pile (10) formed by material flow.

4. The solid-state oxidative polymerization reactor for tea polyphenols according to claim 2, characterized in that: A porous pipe (12) is inserted into the wall of the conical pot (7).

5. The solid state oxidative polymerization reactor for the production of tea polyphenols according to claim 1, characterized in that: The conical pot (7) is long and groove-shaped, and the horizontal section of the reaction kettle (1) is rectangular.

6. The solid state oxidative polymerization reactor for the production of tea polyphenols according to claim 1, characterized in that: The reaction kettle (1) is provided with a mixer (13) for mixing water and gas together.

7. The solid-state oxidative polymerization reactor for tea polyphenols according to claim 6, characterized in that: The mixer (13) is provided with a water tank (14), the upper part of the water tank penetrates through a Venturi tube (15), the inlet end of the Venturi tube is connected with an air pump (16) and an air filter (17), the outlet end is connected with the water supply pipe (3) of the reaction kettle, the inlet end has a large-diameter section (18) with a large inner diameter, the large-diameter section is connected with a tapered variable-diameter section (19) to reduce the inner diameter, the outer side of the variable-diameter section is opposite to a suction inlet (20) of the Venturi tube, the suction inlet is connected with a water suction pipe (21), and the lower end of the water suction pipe extends into the bottom of the water tank.

8. The solid-state oxidative polymerization reactor for tea polyphenols according to claim 7, characterized in that: The water tank (14) is provided with an electric heater (22).

9. The solid state oxidative polymerization reactor for the production of tea polyphenols according to claim 1, characterized in that: The reaction kettle is provided with a temperature sensor, a humidity sensor and an air pressure sensor, the temperature sensor, the humidity sensor and the air pressure sensor are connected with an intelligent processor, and the intelligent processor controls the operation of the air pump, the water pump and the electric heater.

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