A method for recycling of blasting bead waste

Abstract

The present application relates to the technical field of blasting beads for cigarettes, and particularly relates to a recycling method of blasting bead waste products. The method comprises the following steps: preparing a mixed solution, wherein the mixed solution comprises calcium chloride, water and a glycerol compound, and the glycerol compound comprises glycerol or / and a glycerol derivative; soaking the blasting bead waste products in the mixed solution, and then filtering to obtain blasting bead wet pills; drying the blasting bead wet pills in a rotating drum after washing, to obtain blasting bead dry pills; and selecting the blasting bead dry pills to remove blasting beads with non-spherical appearance from the blasting bead dry pills, to obtain blasting bead finished products. According to the present application, the principle of water absorption and swelling of the wall material of the blasting beads is used, and the blasting bead waste products are treated by means of solution soaking combined with rotating drum drying, so that the recovered blasting beads have good machine adaptability in the process of adding the blasting beads to filter rods.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of smoking beads, in particular to a recycling method of bead waste. BACKGROUND

[0002] The smoking capsule, also known as a fragrance ball, is a capsule with a semi-permeable membrane or a sealed capsule material wrapped around a liquid fragrance. It is commonly known as "bead" because it makes a slight sound when it breaks. The bead does not directly participate in combustion in the filter rod. Cigarette consumers can release realistic personalized flavors by breaking the bead implanted in the filter rod, or they can maintain the traditional tobacco taste without breaking the bead. The core liquid of the bead is an oil-soluble fragrance, and the wall material is a polysaccharide colloid component. The production process of the bead mainly includes gelation, dripping, washing, drying, and selection. Due to the complicated production process, there is inevitably some loss during the production process, which is a common problem faced by bead production enterprises. How to further reduce the consumption of the bead production process and improve the yield of the bead finished product has become a difficult problem that needs to be solved by technical researchers.

[0003] After the bead passes through the washing process, it is usually treated by rotary drum drying or boiling drying to obtain a bead dry ball with suitable physical indicators. Due to the inherent characteristics of the wet bead, the drying process takes a long time and is accompanied by the generation of oval, irregular, and other defective beads. In order to ensure the quality of the bead product, the oval, irregular, and other characteristic bead waste is removed by manual or selection equipment during the selection process, which is the main reason for the loss of bead production.

[0004] There is no report on the recycling method of bead waste and its application in domestic and foreign literature. In addition, for capsule-type products similar to beads, the recycling method of waste products is usually to separate the shell and core, separate the shell material and core material for recycling, which has the problems of complex operation and high energy consumption. SUMMARY

[0005] The present application solves the above problems and provides a recycling method of bead waste with simple operation and high recovery rate.

[0006] The technical scheme for solving the problem of the present application is to provide a recycling method of bead waste, comprising the following steps:

[0007] (1) preparing a mixed solution, the mixed solution comprising calcium chloride, water, and a glycerol compound, the glycerol compound comprising glycerol or / and a glycerol derivative;

[0008] (2) soaking the bead waste in the mixed solution and filtering to obtain a wet bead;

[0009] (3) washing the wet explosive beads and drying them in a rotating drum to obtain dry explosive beads;

[0010] (4) selecting the dry explosive beads and removing the explosive beads with non-spherical appearance from the dry explosive beads to obtain finished explosive beads.

[0011] The present application first utilizes the principle of water absorption and swelling of the wall material of the explosive beads, expands the explosive bead waste with unqualified shape through immersion, and then rolls and shapes the expanded explosive bead waste in the drying process through the drying method of the rotating drum to obtain explosive beads with a spherical appearance closer to the spherical shape, thereby completing the recycling of the explosive bead waste.

[0012] Meanwhile, the present application specifically uses a mixed solution of calcium chloride, water and glycerol compounds during the immersion. First, the addition of calcium chloride and glycerol compounds can adjust the concentration of the mixed solution, the osmotic pressure and the water absorption rate of the explosive bead waste to ensure uniform expansion and avoid excessive swelling and rupture of the explosive bead waste during immersion. Second, the strength and toughness of the explosive bead waste can be adjusted by calcium chloride and glycerol compounds. Suitable toughness makes the explosive bead more easily shaped into the desired spherical appearance during rolling and drying, and the explosive bead will not be broken. Suitable strength makes the explosive bead have a hardness basically consistent with the standard explosive bead after drying without water absorption and expansion, ensuring the actual application effect of the recycled explosive bead.

[0013] It should be noted that in the prior art, there are technologies in which calcium chloride is used as a crosslinking agent and glycerol is used as a plasticizer during the preparation of explosive beads; and there are technologies in which explosive beads are added to a calcium chloride solution for secondary strengthening. However, these technologies are essentially different from the present application. Because whether during the preparation of explosive beads or when explosive beads are added to a calcium chloride solution, the mechanism of the reaction between calcium chloride and sodium alginate is utilized: during the preparation of explosive beads, the mechanism is utilized to obtain a coating structure, and glycerol acts alone; in the calcium chloride immersion, the mechanism is utilized to form an "egg grid" structure to squeeze out the water in the original rubber to accelerate the drying of the explosive beads.

[0014] In the present application, the mixed solution is prepared and then the explosive beads are immersed in the mixed solution. The calcium ions in the calcium chloride mainly interact with the glycerol compounds, that is, an interface complex is generated by the electrostatic and coordination interaction between the metal ions and the hydrophilic groups, which forms a biological membrane-like structure on the surface of the explosive beads during the immersion to regulate the osmotic pressure and control the water absorption rate of the explosive beads, and has a certain toughness to facilitate subsequent shaping. After drying, the hydrophilic groups in the biological membrane-like structure condense and are discharged, making the membrane structure more closely combined to improve the strength of the explosive beads. Therefore, in the present application, the use of calcium chloride and glycerol compounds for the immersion of explosive beads should belong to an integral technical feature that cannot be separated.

[0015] In order to improve the performance of the similar biological membrane structure, as a preferred embodiment of the present application, the glycerol compound includes glycerol derivative phosphatidylglycerol, which belongs to amphiphilic molecules and can form a stable layer membrane.

[0016] In order to better obtain the membrane structure, as a preferred embodiment of the present application, the mixed solution is prepared by the following steps: preparing a calcium chloride solution and a glycerol compound solution respectively, and adding the glycerol compound solution into the calcium chloride solution.

[0017] The mixed concentration of calcium chloride and glycerol compound affects the osmotic pressure of the mixed solution and the water absorption effect of the burst bead. As a preferred embodiment of the present application, the sum of the mass fraction of calcium chloride and the mass fraction of glycerol compound in the mixed solution is 0.5-1%. Under this concentration condition, the water absorption speed of the burst bead waste is moderate, which can effectively ensure the uniformity of the swelling of the burst bead waste. At the same time, the soaking time also affects the water absorption effect of the burst bead. If the time is too long, the burst bead may be broken or the osmotic pressure in the burst bead is low, which may cause water loss. If the time is too short, the swelling is not sufficient and uniform, which affects the subsequent plastic effect. As a preferred embodiment of the present application, the soaking time is 1-2h.

[0018] The ratio of the mass fraction of calcium chloride to the mass fraction of glycerol compound affects the permeability and strength of the similar biological membrane structure. As a preferred embodiment of the present application, the ratio of the mass fraction of calcium chloride to the mass fraction of glycerol compound is not more than 1:1.2. That is, glycerol can be excessive relative to calcium chloride, but calcium chloride cannot be excessive.

[0019] However, the amount of calcium chloride used cannot be too small, otherwise the generation amount of the above-mentioned similar biological membrane structure will be affected, so the mass fraction of calcium chloride should also be limited. As a preferred embodiment of the present application, the mass fraction of calcium chloride in the mixed solution is 0.2-0.4%. If the mass fraction is too high, the burst bead may lose water in the opposite direction, and if the mass fraction is too low, the strength of the burst bead may not be enough.

[0020] Therefore, as a preferred embodiment of the present application, the mass fraction of glycerol compound in the mixed solution is 0.3-0.5%. On the one hand, it cooperates with the mass fraction of calcium chloride, and on the other hand, it avoids that too little glycerol compound affects the plasticity and too much glycerol compound causes the burst bead product to be sticky and easy to absorb moisture, which is not easy to store.

[0021] The solid-liquid ratio during soaking is not limited. As a preferred embodiment of the present application, the mass ratio of the burst bead waste to the mixed solution is 1:(3-5), which avoids insufficient water and waste caused by too much mixed solution.

[0022] In addition to the mixed solution, the drying step in the drum also affects the performance of the burst bead. For example, too high a temperature, too low a humidity, and too high an air volume can cause the burst bead to dry before it has fully formed, making it difficult to obtain a burst bead of the desired shape, and can also cause the burst bead to crack; too slow a rotation speed can result in poor formation, and too high a rotation speed can cause the burst bead to break. As a preferred embodiment of the present application, when the drum is drying, the air volume is 2000-3000 m 3 / h, the rotation speed is 40-60 r / min, the ambient temperature is 20-25℃, and the ambient humidity is 35-45%.

[0023] In addition, in order to improve the water absorption efficiency of the burst bead waste and facilitate subsequent washing operations, as a preferred embodiment of the present application, the mixed system of the burst bead waste and the mixed solution is stirred during soaking, and after stirring is complete, the floating oil on the surface of the mixed system is removed.

[0024] Advantages of the present application:

[0025] 1. The present application uses the principle of water absorption and swelling of the burst bead wall material, and uses solution soaking combined with drum drying to process burst bead waste. The entire process is simple, convenient, safe, and efficient, and does not use any organic solvents. At the same time, during the recycling process of the burst bead waste, the burst bead wall material and its core material are not contaminated, so that the original flavor style characteristics are maintained. Further, the burst beads recovered by this method have good machine adaptability after being selected during the addition and application of the filter rod.

[0026] 2. The present application specifically uses a mixed solution of calcium chloride, water, and glycerol compounds to soak the burst beads, which can effectively adjust the toughness of the burst beads after swelling and the hardness after drying.

[0027] 3. The present application utilizes the hydrogen bonding between the hydrophilic groups in the rubber and water molecules to increase the intermolecular spacing and change the compression properties between molecules. The waste burst beads are reshaped by the drum to achieve the purpose of recycling the waste burst beads. The operation process is a physical change that does not cause secondary pollution to the burst beads, and the burst beads after the second treatment have the same technical indicators as finished burst beads, which have good application prospects. DETAILED DESCRIPTION

[0028] The following is a specific embodiment of the present application, and the technical solutions of the present application are further described, but the present application is not limited to these embodiments.

[0029] Example 1

[0030] A method for recycling burst bead waste, comprising the following steps:

[0031] (1) Prepare a mixed solution: mix and stir 0.3 parts of calcium chloride, 0.4 parts of glycerol, and 99.3 parts of water according to mass fraction to obtain a mixed solution.

[0032] (2) According to mass parts, 25 parts of the balloon waste were soaked in the above-mentioned 100 parts of the mixed solution for 1.5 h, so that the balloon waste rubber skin was fully water-swollen. During the soaking process, every 30 min, stirring was carried out at a speed of 20 r / min for 1 min, and after the stirring was completed, the floating oil on the surface of the mixed system was removed. After the soaking was completed, the mixed solution was filtered out through a filter screen, and a balloon wet pellet was obtained.

[0033] (3) The balloon wet pellet was washed with water for 2 times, and the mass ratio of the balloon wet pellet to water was 3:1 during each washing. After the water was drained, drying treatment was carried out in a rotating drum, and the process parameters of the rotating drum drying were as follows: air volume 2500 m 3 / h; rotating speed 50 r / min; environmental temperature 22 ℃; environmental humidity 40%; and a balloon dry pellet was obtained.

[0034] (4) Manual selection was carried out on the balloon dry pellet, and the balloon with a non-spherical appearance in the balloon dry pellet was removed, and a balloon finished product was obtained.

[0035] The above balloon finished product was added into a filter rod for molding trial, and according to the conventional molding speed, the results showed that the on-machine adaptability was good, the balloon did not show obvious damage in the feeding device, the trial process was normal, and the processing requirements of the balloon filter rod could be met.

[0036] Example 2

[0037] This example was basically the same as example 1, and the only difference was that:

[0038] In step (1), the mixed solution was prepared: according to mass parts, 0.3 parts of calcium chloride was added to 40 parts of water, and stirring was uniformly carried out to obtain a calcium chloride solution; 0.3 parts of glycerol and 0.1 parts of phosphatidylglycerol were added to 59.3 parts of water, and stirring and dispersion were carried out to obtain a glycerol compound solution; after 50 μL of the glycerol compound solution was sucked by a micro-injection, it was added dropwise into the calcium chloride solution, and a mixed solution was obtained.

[0039] Example 3

[0040] This example was basically the same as example 1, and the only difference was that:

[0041] In step (1), the mixed solution was prepared: according to mass parts, 0.3 parts of calcium chloride was added to 99.3 parts of water, and stirring was uniformly carried out to obtain a calcium chloride solution; 0.4 parts of phosphatidylglycerol was added to 100 parts of a methanol / chloroform mixed solvent, and stirring and dispersion were carried out to obtain a glycerol compound solution; after 50 μL of the glycerol compound solution was sucked by a micro-injection, it was added dropwise into the calcium chloride solution, and then it was left to stand for 20 min, so that the methanol / chloroform mixed solvent was completely volatilized, and a mixed solution was obtained.

[0042] Example 4

[0043] This example is basically the same as Example 1, except that:

[0044] In Step (1), the mixed solution was prepared: 0.2 parts of calcium chloride, 0.3 parts of glycerol, 99.5 parts of water were mixed and stirred uniformly to obtain a mixed solution.

[0045] Example 5

[0046] This example is basically the same as Example 1, except that:

[0047] In Step (1), the mixed solution was prepared: 0.4 parts of calcium chloride, 0.5 parts of glycerol, 99.1 parts of water were mixed and stirred uniformly to obtain a mixed solution.

[0048] Example 6

[0049] This example is basically the same as Example 1, except that:

[0050] In Step (2), the soaking time was 1 h.

[0051] Example 7

[0052] This example is basically the same as Example 1, except that:

[0053] In Step (2), the soaking time was 2 h.

[0054] Example 8

[0055] This example is basically the same as Example 1, except that:

[0056] In Step (3), the process parameters for drum drying were: air volume 2000 m 3 / h; rotation speed 60 r / min; ambient temperature 20℃; ambient humidity 45%.

[0057] Example 9

[0058] This example is basically the same as Example 1, except that:

[0059] In Step (3), the process parameters for drum drying were: air volume 3000 m 3 / h; rotation speed 40 r / min; ambient temperature 25℃; ambient humidity 35%.

[0060] Blank Example

[0061] Ten pieces of waste bead were selected, the hardness was measured, and the average value was calculated; the diameter was measured, and the average value and standard deviation were calculated.

[0062] Comparative Example 1

[0063] This comparative example is basically the same as Example 1, except that:

[0064] In Step (1), the mixed solution was prepared: 100 parts by mass of water was taken as the mixed solution.

[0065] Comparative Example 2

[0066] This comparative example is basically the same as Example 1, except that:

[0067] In Step (1), the mixed solution was prepared: 0.7 parts by mass of calcium chloride, 99.3 parts by mass of water were mixed and stirred uniformly to obtain the mixed solution.

[0068] Comparative Example 3

[0069] This comparative example is basically the same as Example 1, except that:

[0070] In Step (1), the mixed solution was prepared: 0.7 parts by mass of glycerol, 99.3 parts by mass of water were mixed and stirred uniformly to obtain the mixed solution.

[0071] Comparative Example 4

[0072] This comparative example is basically the same as Example 1, except that:

[0073] In Step (3), after draining the water, it was placed in a hot air oven for static drying treatment, and the process parameters of the hot air oven drying were: air volume 2500 m 3 / h; ambient temperature 22℃; ambient humidity 40%.

[0074] Comparative Example 5

[0075] This comparative example is basically the same as Example 1, except that:

[0076] In Step (1), the mixed solution was prepared: 0.9 parts by mass of calcium chloride, 1.2 parts by mass of glycerol, 97.9 parts by mass of water were mixed and stirred uniformly to obtain the mixed solution.

[0077] Comparative Example 6

[0078] This comparative example is basically the same as Example 1, except that:

[0079] In Step (1), the mixed solution was prepared: 0.15 parts by mass of calcium chloride, 0.2 parts by mass of glycerol, 99.65 parts by mass of water were mixed and stirred uniformly to obtain the mixed solution.

[0080] Comparative Example 7

[0081] This comparative example is basically the same as Example 1, except that:

[0082] In step (1), a mixed solution is prepared by mixing 0.6 parts calcium chloride, 0.4 parts glycerol, and 99 parts water and stirring until homogeneous.

[0083] [Recovery Rate and Physical Property Testing]

[0084] The number of finished popping beads obtained in the examples and comparative examples was compared with the number of waste popping beads originally selected to obtain the recovery rate, and the results are shown in Table 1 below.

[0085] In the examples and comparative examples, a portion of the obtained wet popping beads was used for toughness testing, while the other portion was dried in a rotary drum to produce finished popping beads.

[0086] The toughness of wet capsule bursting beads was tested using a Universal TA research-type texture analyzer. The wet capsule bursting beads were placed directly under a cylindrical probe, and the test conditions were set as follows: the test mode was compression, the test speed was 1 mm / s, and the trigger force was 8 g. The pressure required for the probe to press down until the capsule bursts was determined as the toughness. The average toughness of all wet capsule bursting beads from the same embodiment or comparative example was calculated.

[0087] The hardness of the obtained burst beads was tested using a Universal TA research-type texture analyzer. The burst beads were placed directly under a cylindrical probe, and the test conditions were set as follows: the test mode was compression, the test speed was 1 mm / s, the trigger force was 8 g, and the pressure required for the probe to press down until the burst bead just broke was taken as the hardness. The average hardness of all burst beads obtained in the same embodiment or comparative example was calculated.

[0088] The diameter of all finished popping beads produced in the same embodiment or comparative example was measured, and the average value and standard deviation were calculated.

[0089] The results are shown in Table 1 below.

[0090] Table 1.

[0091]

[0092] As shown in Table 1, in Comparative Example 1, using only water leads to excessive water absorption and breakage of the bursting beads, resulting in a reduced recovery rate. Furthermore, excessive water absorption does not improve the hardness of the finished bursting beads and may even reduce it. In Comparative Example 2, using only calcium chloride causes cross-linking with the bursting bead wall material during soaking, forming an "egg-like" structure. While this improves toughness and hardness, it reduces the moisture content of the wet bursting beads, causing them to dry too quickly during the drying and shaping process, affecting the shaping effect, resulting in a large diameter standard deviation and a reduced recovery rate. It also increases the volume of the finished bursting beads, making them incompatible with standard bursting beads. In Comparative Example 3, using only glycerol improves the toughness and hardness of the wet bursting beads to some extent, but not as much as the combined application of calcium chloride and glycerol. In Comparative Example 4, ordinary hot air drying prevents the wet bursting beads from being rolled and shaped, severely affecting the diameter standard deviation and recovery rate. In Comparative Example 5, the excessive concentration of the mixed solution reduces the water absorption efficiency of the bursting beads, affecting the uniformity of expansion of the wet bursting beads and ultimately impacting the shaping effect. In Comparative Example 6, the concentration of the mixed solution was too low, causing the popping beads to absorb too much water and break, thus reducing the recovery rate. In Comparative Example 7, an excessive amount of calcium chloride was used. The excessive calcium chloride reacted with the popping bead wall material, similar to Comparative Example 2, affecting the molding effect.

[0093] Therefore, through comparison of the examples, blank examples, and comparative examples, it can be seen that the combined use of calcium chloride and glycerin within a certain mass range in this application can effectively ensure the balance between the toughness of the wet capsule and the hardness of the finished capsule. The appropriate toughness makes the wet capsule easier to be molded into the desired finished capsule, and the appropriate hardness is also a physical property that is not obtainable by the finished capsule, thereby improving the recycling rate of waste capsules.

[0094] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A method for recycling and utilizing menthol capsule waste, characterized in that: Includes the following steps: (1) Prepare a mixed solution, wherein the mixed solution comprises calcium chloride, water, and glycerol compounds; The mixed solution is prepared by the following steps: prepare calcium chloride solution and glycerol compound solution separately; use 50 μL of micro-injection agent to draw up the glycerol compound solution and add it dropwise to the calcium chloride solution to obtain the mixed solution; The glycerol compound solution is a mixed aqueous solution of glycerol and phosphatidylglycerol, or a solution of phosphatidylglycerol dispersed in a methanol / chloroform mixed solvent; (2) After soaking the waste popping beads in the mixed solution, filter to obtain wet popping beads; (3) After washing the wet popping beads, dry them in a rotating drum to obtain dry popping beads; (4) Select the dry capsules of bursting beads and remove those that are not spherical in appearance to obtain the finished bursting beads.

2. The method for recycling and utilizing menthol capsule waste according to claim 1, characterized in that: In the mixed solution, the sum of the mass fractions of calcium chloride and glycerol compounds is 0.5-1%.

3. The method for recycling and utilizing menthol capsule waste according to claim 1, characterized in that: Soaking time is 1-2 hours.

4. The method for recycling and utilizing menthol capsule waste according to claim 1, characterized in that: The ratio of the mass fraction of calcium chloride to the mass fraction of glycerol compounds shall not exceed 1:1.

2.

5. The method for recycling waste menthol beads according to claim 1, characterized in that: The mass fraction of calcium chloride in the mixed solution is 0.2-0.4%.

6. The method for recycling and utilizing menthol capsule waste according to claim 1, characterized in that: The mass fraction of glycerol compounds in the mixed solution is 0.3-0.5%.

7. The method for recycling and utilizing menthol capsule waste according to claim 1, characterized in that: The mass ratio of the waste popping beads to the mixed solution is 1:(3-5).

8. The method for recycling and utilizing menthol capsule waste according to claim 1, characterized in that: During rotary drum drying, the air volume is 2000-3000 m³ / h. 3 / h, rotation speed 40-60r / min, ambient temperature 20-25℃, ambient humidity 35-45%.

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