Efficient production method of bamboo wood full-utilization alkaline enhanced bamboo salt
By processing bamboo residues into high-density fuel and adding bamboo ash extraction liquid to the raw salt, the problems of waste of resources and high costs in bamboo salt processing are solved, and the full value utilization of bamboo materials and the improvement of bamboo salt quality are achieved.
Patent Information
- Application Number
- CN202510189852.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-04-25
AI Technical Summary
The existing bamboo salt processing technology has problems of resource waste, pollution and high production costs, especially in the use of bamboo and baking processes.
Bamboo residue is processed into high-density fuel, and the mineral and alkalinity in bamboo salt is enhanced by adding bamboo ash extraction liquid to the original salt. The method includes crushing bamboo, drying and pressing it into hollow bars as biomass fuel and baking multiple times by baking one time.
The full-valued utilization of bamboo has been achieved, the dependence on pine wood charcoal has been reduced, the production cost has been reduced, and the quality and mineral content of bamboo salt have been improved.
Smart Images
Figure CN119871623A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of bamboo salt processing, and in particular relates to a method for efficiently producing alkaline reinforced bamboo salt which fully utilizes bamboo materials. Background Art
[0002] The bamboo salt processing mainly uses high-quality bamboo segments, which are baked with pine wood. The bamboo tube serves as a container to hold the salt, provides mineral elements, and can also be used as fuel for baking to provide heat. A large amount of bamboo tips are left over, and most of them are discarded in the forest as waste, causing a waste of resources.
[0003] The mineral content of bamboo branches and leaves is higher than that of bamboo stalks. In order to make better use of the rich minerals in bamboo leaves, there are related studies or technologies to put bamboo leaves in the upper part of the bamboo salt cylinder and then seal it with yellow mud. The bamboo leaves are dry distilled in an isolated air environment, producing black charcoal and burnt smoke, and even polycyclic aromatic hydrocarbons, which pollute the salt and affect the quality of bamboo salt. In addition, the upper part is far away from the fire source, and the minerals migrate from bottom to top with heat and moisture. Some studies have directly used medium-frequency furnaces to grind bamboo leaves and melt them with salt under heating. In addition, bamboo shells are used instead of bamboo leaves to fill the upper part of the bamboo salt cylinder, or bamboo vinegar is applied to the bamboo salt to be processed to increase the melting of minerals. Bamboo leaves, bamboo shells, and bamboo vinegar contain a large amount of organic matter. During the baking process, due to the uneven temperature, most areas cannot reach the level of complete combustion and volatilization of organic matter. Therefore, there will be organic substances such as dry distillation black charcoal and burnt smoke (oil) smell, which will cause bamboo salt pollution and affect the quality.
[0004] The traditional baking process requires a long burning time and many times, and requires a large amount of fuel. Pine wood is used as fuel mainly because pine wood contains pine resin, the flame temperature is high, and the pine wood charcoal is large and dense, especially the core material burns slowly, which can continuously supply heat for a long time. The green layer of bamboo also contains flammable substances similar to grease, but the bamboo wall is thin and hollow with low density, and the burning speed is fast, which is not conducive to continuous combustion and heat supply. In fact, the carbon content and mineral content of bamboo tips are higher than those of bamboo stalks, which is a rich source of trace elements and a high-quality biomass fuel. Summary of the invention
[0005] The technical problem to be solved by the present invention is to provide an efficient production method of alkaline enhanced bamboo salt that fully utilizes bamboo materials in view of the deficiencies of the above-mentioned prior art. The production method uses bamboo residues to process into fuel for subsequent baking, thereby realizing the full value utilization of bamboo, and adds bamboo ash extract to the raw salt to enhance the minerals and alkalinity in the bamboo salt. The one-time baking in the present invention can achieve the quality of bamboo salt after multiple baking in the traditional baking method, reduce the number of baking times, reduce production costs, reduce dependence on pine wood firewood and charcoal materials, and realize the full value utilization of bamboo materials.
[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a highly efficient production method of alkaline enhanced bamboo salt using all bamboo materials, characterized in that the method comprises:
[0007] S1. Bamboo salt is processed with bamboo fuel:
[0008] The bamboo raw material is crushed to obtain bamboo crushed material, dried to a moisture content of 8-18%, and then sieved, and the bamboo crushed material less than 5 cm in length is pressed into a hollow rod A, and the hollow rod A is made into bamboo charcoal;
[0009] The bamboo crushed material with a length greater than 5 cm is pressed into a hollow rod B, and the hollow rod B is used as a biomass fuel;
[0010] Adding pine needle granules and rosin or natural rosin to bamboo crushed materials with a length greater than 5 cm, and pressing them into hollow rods C as enhanced biomass fuel;
[0011] S2. Preparation of bamboo ash extract:
[0012] Adding 1-20 times the weight of the extract to the bamboo ash and stirring evenly, then leaching for 10-30 minutes and filtering to obtain bamboo ash residue and bamboo ash extract;
[0013] The bamboo ash is a white inorganic substance that is free of chemical pollution and contains no organic matter and is left over from the combustion of bamboo raw materials.
[0014] S3. Adjustment of bamboo salt moisture and packing:
[0015] The bamboo ash extract or the bamboo ash extract and drinking water are sprayed on the raw salt to adjust the water content of the salt to 5-15%, thereby obtaining bamboo ash extract fortified salt, and then the bamboo ash extract fortified salt is loaded into a bamboo tube and compacted to obtain a bamboo tube filled with salt; the inner diameter of the bamboo tube is 6-20 cm;
[0016] S4. Bamboo salt roasting:
[0017] The hollow fuel A or B in S1 is used to bake the bamboo tube filled with salt for 0-2 hours to allow the moisture in the bamboo tube to penetrate into the salt. The hollow rod C is then used to bake the bamboo tube over a high fire until the bamboo tube burns. The baking time is 1-3 hours to form a dense salt column. The salt column is crushed to obtain a baked alkaline enhanced bamboo salt.
[0018] Preferably, the bamboo raw materials in S1 and S2 are bamboo residues after making the bamboo tubes in S3, and / or bamboo residues produced during bamboo processing that do not contain any non-bamboo materials.
[0019] Preferably, the mass ratio of the bamboo crushed material, pine needle particle powder and rosin or natural rosin in S1 is (80-95):(0-15):(1-5).
[0020] Preferably, the bamboo ash in S2 is inorganic matter remaining from the combustion of bamboo raw materials, and the specific preparation process is: the bamboo raw materials are burned in a furnace, and the light ash floating out from the upper part of the furnace cavity is collected by a net; or the ash from the combustion of the bamboo raw materials is calcined at a high temperature of more than 800°C to become grayish white bamboo ash that does not contain organic matter.
[0021] Before the bamboo ash extract strengthening salt in S3 is loaded into the bamboo tube, the bamboo ash filter residue obtained in S2 is first added into the bamboo tube, and the height of the bamboo ash filter residue at the bottom of the bamboo tube is 0.1-1% of the height of the bamboo tube;
[0022] After the bamboo ash extract and the salt-enhanced salt are loaded into the bamboo tube in S3, the mouth of the bamboo tube is sealed with yellow mud.
[0023] Preferably, the bamboo ash residue obtained in S2 is added to the yellow mud, and further, the amount of the bamboo ash residue obtained in S2 added is no more than 20% of the mass of the yellow mud.
[0024] Preferably, the extract in S2 is water or an aqueous solution of acetic acid, and the aqueous solution of acetic acid is a mixture of acetic acid and water in a volume ratio of 1:1.
[0025] Preferably, the temperature of the extract in S2 is 20-80°C.
[0026] Preferably, the once-baked alkaline enhanced bamboo salt described in S4 is crushed and then repeatedly baked 2-8 times as raw salt to obtain twice-baked alkaline enhanced bamboo salt to eight times-baked alkaline enhanced bamboo salt.
[0027] Preferably, the method further comprises: the alkaline enhanced bamboo salt obtained in S4 is subjected to high temperature calcination or small diameter bamboo enhanced baking to obtain alkaline enhanced bamboo salt crystals.
[0028] Preferably, the small-diameter bamboo enhanced baking is specifically as follows: the alkaline enhanced bamboo salt obtained in S4 is loaded into a small bamboo tube with an inner diameter of 2-5 cm and a height of 10-25 cm, the bamboo tubes are stacked horizontally, and the enhanced bamboo biomass fuel is used for continuous baking for 1-5 hours to obtain a crystalline bamboo salt column, which is crushed into small particles to obtain alkaline enhanced bamboo salt crystals of different colors;
[0029] The high temperature calcination is specifically as follows: the alkaline enhanced bamboo salt obtained in S4 is placed in a high temperature furnace and melted at a high temperature of 1000-1200° C., and then cooled and crystallized after 0.5-2 hours to obtain alkaline enhanced bamboo salt crystals.
[0030] Compared with the prior art, the present invention has the following advantages:
[0031] 1. The present invention realizes the internal circulation and full utilization of bamboo resources in preparing bamboo salt, using high-quality bamboo tubes as containers, the remaining bamboo residues as heat sources, and bamboo ash as minerals and alkalinity enhancement.
[0032] 2. The present invention uses mechanical pressing to process bamboo residues into high-density fuel, thereby increasing the calorific value per unit volume. At the same time, rosin, rosin, pine powder and other combustion-supporting ingredients are added to prepare enhanced biomass fuel, which can meet the requirements of bamboo salt baking, fully utilize bamboo resources, and reduce the dependence and consumption of pine firewood and charcoal materials in traditional bamboo salt processing technology.
[0033] 3. The present invention adopts the method of extracting bamboo ash from bamboo burning to obtain bamboo ash extract. Bamboo ash is rich in minerals such as potassium, calcium, zinc, magnesium, iron, etc., especially alkaline substances such as potassium carbonate. The minerals are dissolved in the bamboo ash extract by extraction and added to the raw salt to be baked. The extract is melted with the bamboo salt at high temperature to achieve mineral enhancement in the raw salt, greatly increase the alkalinity and trace minerals of the bamboo salt, and achieve the quality of bamboo salt after multiple baking by the traditional baking method in one baking obtained by the technology of the present invention, thereby reducing the number of baking times and production cycle, improving product quality, and reducing production costs.
[0034] 4. After the last baking, the present invention uses high temperature calcination or small-diameter bamboo enhanced baking to volatilize and remove heavy metals in the form of chlorides.
[0035] 5. The bamboo tube of the present invention is placed vertically, and the bottom of the bamboo tube is closest to the flame and has the highest heating temperature. Adding bamboo ash slurry at the bottom of the bamboo tube is helpful to buffer the heat at the bottom. In the early stage of baking, the moisture in the slurry carries the soluble minerals and migrates upward into the salt column. In the later stage of baking, the organic matter in the slurry is fully ashified and burned by heat. The insoluble minerals in the ash contact the high-temperature salt column with the hot air flow and partially penetrate and melt, thereby increasing the mineral content and alkalinity of the salt column, and can further improve the strength of the salt column and the quality of bamboo salt.
[0036] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0037] Figure 1 This is a picture of the bamboo raw material being processed into hollow rods according to the present invention.
[0038] Figure 2 Pictures of the baking process of the double-baked alkaline enhanced bamboo salt; (a) is a photo of the double-baked alkaline enhanced bamboo salt being baked after being loaded into a bamboo tube; (b) is a photo of the bamboo salt crystal column obtained after the baking is completed.
[0039] Figure 3 This is a picture of the alkaline enhanced bamboo salt crystals prepared in Example 1 of the present invention.
[0040] Figure 4 This is a photo of bamboo salt crystals of different colors prepared in Example 4 of the present invention.
[0041] Figure 5This is a SEM picture of the raw sun-dried sea salt of the present invention.
[0042] Figure 6 This is a SEM image of the alkaline enhanced triple-roasted bamboo salt crystals prepared in Example 1 of the present invention. DETAILED DESCRIPTION
[0043] Example 1
[0044] This embodiment discloses a highly efficient production method of alkaline enhanced bamboo salt using all bamboo materials, comprising:
[0045] S1. Bamboo salt is processed with bamboo fuel
[0046] The bamboo raw material is crushed to obtain bamboo crushed material, which is naturally sun-dried or mechanically dried to a moisture content of 13%, and then sieved; the bamboo crushed material with a length of less than 5 cm is pressed into a hollow rod A, and the hollow rod A is made into bamboo charcoal; the bamboo crushed material with a length of more than 5 cm is pressed into a hollow rod A, and the hollow rod B is used as biomass fuel; pine needle granular powder and natural rosin are added to the bamboo crushed material with a length of more than 5 cm, and pressed into a hollow rod C as an enhanced biomass fuel; the hollow rod A, the hollow rod B and the hollow rod C are as follows Figure 1 As shown, the density is about 1.0-1.2g / cm 3 The mass ratio of the bamboo crushed material, pine needle granules and natural rosin is 90:10:3;
[0047] S2. Preparation of bamboo ash extract:
[0048] Add 10 times the weight of the extracting solution at a temperature of 50° C. to the bamboo ash and stir evenly, then extract for 20 minutes and then centrifuge and filter to obtain bamboo ash residue and bamboo ash extracting solution; the extracting solution is water.
[0049] The bamboo ash is obtained by calcining bamboo raw materials at a high temperature of more than 800° C. to obtain grayish white bamboo ash without organic matter.
[0050] S3. Adjustment of bamboo salt water content and packing
[0051] Adding bamboo ash extract until the water content of the original salt is 10% to obtain bamboo ash extract fortified salt, then putting the bamboo ash extract fortified salt into a bamboo tube and tamping it, and sealing it with yellow mud to obtain a bamboo tube filled with salt;
[0052] Before the bamboo ash extract fortified salt is loaded into the bamboo tube, S2 is first added to the bottom of the bamboo tube to obtain bamboo ash filter residue, and the height of the bamboo ash filter residue at the bottom of the bamboo tube is 0.5% of the height of the bamboo tube;
[0053] S4, Bamboo Salt Baking
[0054] The hollow fuel A or B in S1 is used to bake the bamboo tube filled with salt for 1 hour to allow the water in the bamboo tube to penetrate into the salt, and then the hollow rod C is used to bake until the bamboo tube burns, and the baking is continued for 2 hours to form a dense salt column, and the salt column is crushed to obtain a baked alkaline enhanced bamboo salt;
[0055] Repeat the bamboo salt barreling and baking process in S3 once, and use the first-baked alkaline enhanced bamboo salt as the raw salt in S3 to obtain the second-baked alkaline enhanced bamboo salt;
[0056] S5, Bamboo Salt Melting
[0057] The twice-baked alkaline enhanced bamboo salt is placed in a high-temperature furnace and melted at 1200°C for 0.5h to volatilize and remove heavy metals in the form of chlorides, and then cooled and crystallized to obtain the alkaline enhanced triple-baked bamboo salt. Figure 3 As shown, the crystal parts of bamboo salt appear in different colors.
[0058] In this embodiment, the raw salt is sun-dried sea salt, and its water content is about 3%.
[0059] Figure 5 This is the SEM picture of sun-dried sea salt. Figure 6 This is a SEM image of the alkaline enhanced triple-roasted bamboo salt crystals prepared in this example. Under the microscopic state, after high-temperature calcination, the crystal structure of the sun-dried sea salt becomes irregular.
[0060] In this embodiment, bamboo is cut down, and high-quality bamboo stalks are processed into bamboo segments, wherein the lower part of the bamboo segment has a bamboo node at a distance of 0.5-5 cm from the bottom end, and the middle of the bamboo segment contains no or 1-3 bamboo nodes, and then the bamboo segment is cut into bamboo tubes, and the inner diameter of the bamboo tubes is 6-20 cm. The moisture content of the bamboo tubes is 10-100%. If the freshly made bamboo tubes lose water after being placed for a long time, the moisture content is increased by spraying to meet the requirements before salt filling. Remember that immersion cannot be used instead of spraying, otherwise the liquid in the bamboo tube will exchange liquid with the water.
[0061] In this embodiment, the bamboo raw material is the bamboo residue after making the bamboo tube in S3, and / or the bamboo residue produced during bamboo processing without any non-bamboo material. Specifically, the bamboo raw material can be the bamboo roots, bamboo tips, bamboo branches and bamboo leaves of the bamboo outside the bamboo tube for baking bamboo salt, or the residue produced by the bamboo processing enterprise without any non-bamboo material as the bamboo residue.
[0062] In this embodiment, the bamboo salt can be baked in the furnace, which is divided into three layers: upper, middle and lower. The bamboo tubes filled with salt are placed in the middle and upper layers, and the fuel is placed in the lower layer. The upper and middle layers are high-temperature resistant storage plates that can be moved up and down. First, hollow fuel A or B is used as fuel to bake the bamboo tubes filled with salt at low temperature, so that the moisture in the bamboo tubes can fully penetrate into the salt; then hollow fuel C is used for baking; the bamboo salt tube closest to the fire source is completely carbonized and replaced with the upper bamboo salt tube, and the enhanced bamboo biomass fuel is continued to be used to bake the bamboo tubes filled with salt on the lower storage plate. Finally, both layers form dense salt columns, and the bamboo salt columns are crushed to obtain a baked alkaline enhanced bamboo salt.
[0063] This embodiment uses high-quality bamboo tubes as containers, the remaining bamboo residues as heat sources, and bamboo ash as minerals and alkalinity enhancers, thereby achieving internal circulation and full utilization of bamboo resources in the bamboo salt preparation process.
[0064] This embodiment processes bamboo residues into high-density fuel, increases the calorific value per unit volume, and adds rosin, rosin, pine powder and other combustion-supporting ingredients to prepare enhanced biomass fuel, which can meet the requirements of bamboo salt roasting. Comprehensively utilize bamboo resources, reduce dependence on and consumption of pine firewood and charcoal, and achieve high-value utilization of bamboo.
[0065] In this embodiment, the bamboo tube is placed vertically during baking, and the bottom of the bamboo tube is closest to the flame and is heated to the highest temperature. Adding bamboo ash slurry at the bottom of the bamboo tube helps to buffer the heat at the bottom and prolong the time it takes for the bottom of the bamboo tube to burn through. In the early stage of baking, the moisture in the slurry carries soluble minerals and migrates upward into the salt column. In the later stage of baking, the organic matter in the slurry is fully ashified and burned by heat. The insoluble minerals in the ash rise with the hot air flow and penetrate and melt into the part that contacts the high-temperature salt column, increasing the mineral content of the salt column, which can further improve the strength of the salt column and the quality of bamboo salt.
[0066] Comparative Example 1
[0067] This comparative example is the same as the preparation method in Example 1 to obtain bamboo salt, except that the preparation of the bamboo ash extract in S2 is removed, and the bamboo ash extract is added to the raw salt and the bamboo ash residue is added to the bottom of the bamboo tube in S4.
[0068] Example 2
[0069] This embodiment discloses a highly efficient production method of alkaline enhanced bamboo salt using all bamboo materials, comprising:
[0070] S1. Bamboo salt is processed with bamboo fuel
[0071] The bamboo raw material is crushed to obtain bamboo crushed material, which is naturally sun-dried or mechanically dried to a moisture content of 8%, and then sieved; the bamboo crushed material with a length of less than 5 cm is pressed into a hollow rod A, and the hollow rod A is made into bamboo charcoal; the bamboo crushed material with a length of more than 5 cm is pressed into a hollow rod A, and the hollow rod B is used as biomass fuel; rosin is added to the bamboo crushed material with a length of more than 5 cm, and the bamboo crushed material is pressed into a hollow rod C as an enhanced biomass fuel; the density of the hollow rod A, the hollow rod B and the hollow rod C is about 1.0-1.2 g / cm 3 ; The mass ratio of the bamboo crushed material to the rosin is 80:1;
[0072] S2. Preparation of bamboo ash extract:
[0073] Adding 1 times the weight of the extracting solution at a temperature of 20° C. to the bamboo ash and stirring evenly, then leaching for 30 minutes and filtering to obtain bamboo ash filter residue and bamboo ash extracting solution;
[0074] The extract is water or an aqueous solution of acetic acid, and the aqueous solution of acetic acid is prepared by mixing acetic acid and water in a volume ratio of 1:1.
[0075] Filtration can be done by centrifugation, filter press, vacuum filtration, cartridge filtration, microporous filter, etc.;
[0076] The bamboo ash is obtained by calcining bamboo raw materials at a high temperature of more than 800° C. to obtain grayish white bamboo ash without organic matter.
[0077] S3. Adjustment of bamboo salt water content and packing
[0078] Measuring the moisture content of the raw salt, then spraying the bamboo ash extract on the raw salt to adjust the moisture content of the salt to 5%, obtaining bamboo ash extract fortified salt, then filling the bamboo ash extract fortified salt into a bamboo tube and tamping it, sealing it with yellow mud, and obtaining a bamboo tube filled with salt;
[0079] Or, before the bamboo ash extract fortifying salt is loaded into the bamboo tube, S2 is first added into the bamboo tube to obtain bamboo ash filter residue, and the height of the bamboo ash filter residue at the bottom of the bamboo tube is 1% of the height of the bamboo tube;
[0080] S3, Bamboo Salt Baking
[0081] The hollow fuel A or B in S1 is baked with the salt-filled bamboo tube for 0.5 h to allow the water in the bamboo tube to penetrate into the salt. The hollow rod C is then baked until the bamboo tube burns. The baking is continued for 2.5 h to form a dense salt column. The salt column is crushed to obtain a baked alkaline enhanced bamboo salt.
[0082] In this embodiment, the raw salt is sun-dried sea salt.
[0083] In this embodiment, bamboo is harvested, and high-quality bamboo stalks are processed into bamboo segments, wherein the lower part of the bamboo segment has a bamboo node 0.5-5 cm away from the bottom end, and the middle of the bamboo segment contains no or 1-3 bamboo nodes, and then the bamboo segment is cut into bamboo tubes, and the inner diameter of the bamboo tubes is 6-20 cm. The moisture content of the bamboo tubes is required to be between 10-100%, and the moisture content of the bamboo tubes is preferably about 50%. If the freshly made bamboo tubes lose water after being placed for a long time, the moisture content is increased by spraying to meet the requirements before salt filling.
[0084] In this embodiment, the bamboo raw material is the bamboo residue after making the bamboo tube in S3, and / or the bamboo residue produced during bamboo processing without any non-bamboo material. Specifically, the bamboo raw material can be the bamboo roots, bamboo tips, bamboo branches and bamboo leaves of the bamboo outside the bamboo tube for baking bamboo salt, or the residue produced by the bamboo processing enterprise without any non-bamboo material as the bamboo residue.
[0085] In this embodiment, the ingredients of the bamboo salt prepared in Example 1, Example 2 and Comparative Example 1 are shown in Table 1.
[0086] Table 1 Composition data of bamboo salt prepared in Example 1, Example 2 and Comparative Example 1
[0087]
[0088] The data in Table 1 show that: the comparison between Example 1 and Comparative Example 1 shows that, after the application of bamboo ash extract and the strengthening of bottom bamboo ash residue, the beneficial mineral elements (potassium, calcium, iron, zinc, magnesium) in the triple-roasted bamboo salt with the same roasting process are significantly increased. In Example 2, no high-temperature crystallization treatment is performed. Compared with Example 1, there is still a small amount of heavy metal residue, which shows that high-temperature calcination crystallization treatment is helpful to remove heavy metal residues.
[0089] Example 3
[0090] This embodiment discloses a highly efficient production method of alkaline enhanced bamboo salt using all bamboo materials, comprising:
[0091] S1. Bamboo salt is processed with bamboo fuel
[0092] The bamboo raw material is crushed to obtain bamboo crushed material, which is naturally sun-dried or mechanically dried to a moisture content of 18%, and then sieved; the bamboo crushed material with a length of less than 5 cm is pressed into a hollow rod A, and the hollow rod A is made into bamboo charcoal; the bamboo crushed material with a length of more than 5 cm is pressed into a hollow rod A, and the hollow rod B is used as biomass fuel; pine needle granular powder and natural rosin are added to the bamboo crushed material with a length of more than 5 cm, and pressed into a hollow rod C as an enhanced biomass fuel;
[0093] The density of hollow rod A, hollow rod B and hollow rod C is about 1.0-1.2g / cm 3 .
[0094] The mass ratio of the bamboo crushed material, pine needle granules and natural rosin is 95:15:5;
[0095] S2. Preparation of bamboo ash extract:
[0096] Add 20 times the weight of water at a temperature of 80° C. to the bamboo ash and stir evenly, then extract for 10 minutes and filter to obtain bamboo ash residue and bamboo ash extract;
[0097] Filtration can be done by centrifugation, filter press, vacuum filtration, cartridge filtration, microporous filter, etc.;
[0098] The bamboo ash is inorganic matter remaining after the bamboo raw material is burned. The specific preparation process is as follows: the bamboo raw material is burned in a furnace, and the light ash floating out from the upper part of the furnace cavity is collected by a net.
[0099] S3. Adjustment of bamboo salt water content and packing
[0100] The moisture content of the raw salt is measured, and then the bamboo ash extract is sprayed on the dry salt to adjust the moisture content of the salt to 15%, thereby obtaining bamboo ash extract fortified salt. The bamboo ash extract fortified salt is then loaded into a bamboo tube and compacted, and sealed with yellow mud added with the bamboo ash residue obtained in S2, wherein 0-20% of the bamboo ash residue obtained in S2 is added to the yellow mud, thereby obtaining a bamboo tube filled with salt;
[0101] Before the bamboo ash extract fortified salt is loaded into the bamboo tube, S2 is first added to the bottom of the bamboo tube to obtain bamboo ash filter residue, and the height of the bamboo ash filter residue at the bottom of the bamboo tube is 1% of the height of the bamboo tube;
[0102] S4, Bamboo Salt Baking
[0103] The hollow fuel A or B in S1 is used to bake the bamboo tube filled with salt for 2 hours to allow the water in the bamboo tube to penetrate into the salt, and then the hollow rod C is used to bake until the bamboo tube burns, and the baking is continued for 3 hours to form a dense salt column, and the salt column is crushed to obtain a baked alkaline enhanced bamboo salt;
[0104] Repeat the steps of adjusting the moisture content of the bamboo salt and packing the bamboo salt in S3 and roasting the bamboo salt in S4 four times to obtain four-roasted bamboo salt;
[0105] S5, Bamboo Salt Melting
[0106] The four-roasted bamboo salt obtained in S4 is placed in a high-temperature furnace and melted at a high temperature of 1000° C. for 2 hours to volatilize and remove heavy metals in the form of chlorides, and then cooled and crystallized to obtain alkaline enhanced bamboo salt.
[0107] In this embodiment, the raw salt is sun-dried sea salt.
[0108] In this embodiment, the raw salt is selected from sun-dried sea salt. In this embodiment, bamboo is harvested, and high-quality bamboo stalks are processed into bamboo segments, with a bamboo node at 0.5-5 cm from the bottom of the bamboo segment, and no or 1-3 bamboo nodes in the middle of the bamboo segment, and then the bamboo segment is cut into bamboo tubes, and the inner diameter of the bamboo tube is 6-20 cm. The moisture content of the bamboo tube is 10-100%. If the freshly made bamboo tube loses water after being placed for a long time, the moisture content is increased by spraying to meet the requirements before salting.
[0109] In this embodiment, the bamboo raw material is the bamboo residue after making the bamboo tube in S3, and / or the bamboo residue generated during bamboo processing without any non-bamboo material. Specifically, the bamboo raw material can be the remaining bamboo roots, bamboo tips, bamboo branches and bamboo leaves on the bamboo stalks outside the processed bamboo tube, which can be used as the bamboo residue, or the residue generated by the bamboo processing enterprise without any non-bamboo material as the bamboo residue.
[0110] In this embodiment, the bamboo salt can be baked in the furnace, which is divided into three layers: upper, middle and lower. The middle and upper layers are placed with bamboo tubes filled with salt, and the lower layer is placed with fuel. The upper and middle layers are high-temperature resistant storage plates that can be moved up and down. First, hollow fuel A or B is used as fuel to bake the bamboo tubes filled with salt at low temperature, so that the water in the bamboo tubes penetrates into the salt; then the enhanced bamboo biomass fuel is used for baking, and the bamboo salt tube closest to the fire source is completely carbonized and replaced with the upper bamboo salt tube, and the enhanced bamboo biomass fuel is continued to be used to bake the bamboo tubes filled with salt on the lower storage plate. Finally, the two layers form dense salt columns, and the bamboo salt columns are crushed to obtain a baked alkaline enhanced bamboo salt.
[0111] In this embodiment, the prepared alkaline enhanced bamboo salt is off-white in color, configured into a 0.9% saline solution with a pH of 10.16. The physical and chemical properties and heavy metal content meet the national standard requirements, and the content of mineral elements such as potassium, calcium, magnesium, iron, and zinc is higher than that of bamboo salt roasted by traditional methods.
[0112] Example 4
[0113] This embodiment discloses a highly efficient production method of alkaline enhanced bamboo salt using all bamboo materials, comprising:
[0114] S1. Bamboo salt is processed with bamboo fuel
[0115] The bamboo raw material is crushed to obtain bamboo crushed material, which is naturally sun-dried or mechanically dried to a moisture content of 10%, and then sieved; the bamboo crushed material with a length of less than 5 cm is pressed into a hollow rod A, and the hollow rod A is made into bamboo charcoal; the bamboo crushed material with a length of more than 5 cm is pressed into a hollow rod A, and the hollow rod B is used as a biomass fuel; pine needle particle powder and rosin or natural rosin are added to the bamboo crushed material with a length of more than 5 cm, and pressed into a hollow rod C as an enhanced biomass fuel; the density of the hollow rod A, the hollow rod B and the hollow rod C is about 1.0-1.2 g / cm 3 The mass ratio of the bamboo crushed material, pine needle granules and rosin or natural rosin is 85:12:3;
[0116] S2. Preparation of bamboo ash extract:
[0117] Add 15 times the weight of the extracting liquid at a temperature of 70° C. to the bamboo ash and stir evenly, then extract for 20 minutes and filter to obtain bamboo ash residue and bamboo ash extracting liquid;
[0118] The extract is an aqueous solution of acetic acid, and the aqueous solution of acetic acid is a mixture of acetic acid and water in a volume ratio of 1:1.
[0119] Filtration can be done by centrifugation, filter press, vacuum filtration, cartridge filtration, microporous filter, etc.;
[0120] The bamboo ash is obtained by calcining bamboo raw materials at a high temperature of more than 800° C. to obtain grayish white bamboo ash without organic matter.
[0121] S3. Adjustment of bamboo salt water content and packing
[0122] The moisture content of the raw salt is measured, and then the bamboo ash extract is sprayed on the dry salt to adjust the moisture content of the salt to 12%, thereby obtaining bamboo ash extract fortified salt, and then the bamboo ash extract fortified salt is loaded into a bamboo tube and compacted, and the yellow mud to which the bamboo ash filter residue obtained in S2 is added is used for sealing, thereby obtaining a bamboo tube filled with salt;
[0123] Before the bamboo ash extract fortified salt is loaded into the bamboo tube, S2 is first added into the bamboo tube to obtain bamboo ash filter residue, and the height of the bamboo ash filter residue at the bottom of the bamboo tube is 0.8% of the height of the bamboo tube;
[0124] S4, Bamboo Salt Baking
[0125] The hollow fuel A or B in S1 is used to bake the bamboo tube filled with salt for 2 hours to allow the water in the bamboo tube to penetrate into the salt, and then the hollow rod C is used to bake until the bamboo tube burns, and the baking is continued for 2.5 hours to form a dense salt column, and the salt column is crushed to obtain a baked alkaline enhanced bamboo salt;
[0126] Repeat the water content adjustment and tube filling in S3 and the bamboo salt baking process in S4 for six times, use the first-baked alkaline enhanced bamboo salt as the raw salt, readjust the water content, fill it in the bamboo tube and bake it, and finally obtain the six-baked alkaline enhanced bamboo salt;
[0127] S5. Bamboo Salt Crystal
[0128] like Figure 2 As shown, the six-baked alkaline enhanced bamboo salt obtained in S4 is put into a small bamboo tube with an inner diameter of 2 cm and a height of 10 cm, and the bamboo tubes are stacked horizontally. The enhanced bamboo biomass fuel is used for continuous baking for 2 hours to obtain a crystalline bamboo salt column, which is crushed to obtain bamboo salt crystals, as shown in FIG. Figure 4 shown.
[0129] In this embodiment, bamboo is harvested, and high-quality bamboo stalks are processed into bamboo segments, wherein the lower part of the bamboo segment has a bamboo node 0.5-5 cm away from the bottom end, and the middle of the bamboo segment contains no or 1-3 bamboo nodes, and then the bamboo segment is cut into bamboo tubes, and the inner diameter of the bamboo tubes is 6-10 cm. The moisture content of the bamboo tubes is between 50-80%. If the freshly made bamboo tubes lose water after being placed for a long time, the moisture content is increased by spraying to meet the requirements before salt filling.
[0130] In this embodiment, the bamboo raw material is the bamboo residue after making the bamboo tube in S3, and / or the bamboo residue generated during bamboo processing without any non-bamboo material. Specifically, the bamboo raw material can be the remaining bamboo roots, bamboo tips, bamboo branches and bamboo leaves on the bamboo stalks outside the processed bamboo tube, which can be used as the bamboo residue, or the residue generated by the bamboo processing enterprise without any non-bamboo material as the bamboo residue.
[0131] In this embodiment, the prepared alkaline enhanced bamboo salt is off-white in color, configured into a 0.9% saline solution with a pH of 10.24. The physical and chemical properties and heavy metal content meet the national standard requirements, and the content of mineral elements such as potassium, calcium, magnesium, iron, and zinc is higher than that of bamboo salt roasted by traditional methods.
[0132] Example 5
[0133] This embodiment discloses a highly efficient production method of alkaline enhanced bamboo salt using all bamboo materials, comprising:
[0134] S1. Bamboo salt is processed with bamboo fuel
[0135] The bamboo raw material is crushed to obtain bamboo crushed material, which is naturally sun-dried or mechanically dried to a moisture content of 12%, and then sieved; the bamboo crushed material with a length of less than 5 cm is pressed into a hollow rod A, and the hollow rod A is made into bamboo charcoal; the bamboo crushed material with a length of more than 5 cm is pressed into a hollow rod A, and the hollow rod B is used as a biomass fuel; pine needle particle powder and rosin or natural rosin are added to the bamboo crushed material with a length of more than 5 cm, and pressed into a hollow rod C as an enhanced biomass fuel; the density of the hollow rod A, the hollow rod B and the hollow rod C is about 1.0-1.2 g / cm 3 The mass ratio of the bamboo crushed material, pine needle granules and rosin or natural rosin is 95:5:5;
[0136] S2. Preparation of bamboo ash extract:
[0137] Add 8 times the weight of water at a temperature of 50° C. to the bamboo ash and stir evenly, then extract for 25 minutes and filter to obtain bamboo ash residue and bamboo ash extract;
[0138] Filtration can be done by centrifugation, filter press, vacuum filtration, cartridge filtration, microporous filter, etc.;
[0139] The bamboo ash is the inorganic matter remaining after the combustion of bamboo raw materials. The specific preparation process is: the bamboo raw materials and charcoal are burned in a furnace, and the light ash floating out from the upper part of the furnace cavity is collected by a net; or the bamboo raw materials are calcined at a high temperature of more than 800°C to obtain grayish white bamboo ash without organic matter for use as bamboo ash.
[0140] S3. Adjustment of bamboo salt water content and packing
[0141] Measuring the moisture content of the raw salt, then spraying the bamboo ash extract on the dry salt to adjust the moisture content of the salt to 12%, obtaining bamboo ash extract-fortified salt, then filling the bamboo ash extract-fortified salt into a bamboo tube and tamping it, sealing it with yellow mud, and obtaining a bamboo tube filled with salt;
[0142] Before the bamboo ash extract fortified salt is loaded into the bamboo tube, S2 is first added into the bamboo tube to obtain bamboo ash filter residue, and the height of the bamboo ash filter residue at the bottom of the bamboo tube is 1% of the height of the bamboo tube;
[0143] S4, Bamboo Salt Baking
[0144] The hollow fuel A or B in S1 is used to bake the bamboo tube filled with salt for 0.5 hours to allow the water in the bamboo tube to penetrate into the salt, and then the hollow rod C is used to bake until the bamboo tube burns, and the baking is continued for 2 hours to form a dense salt column, and the salt column is crushed to obtain a baked alkaline enhanced bamboo salt;
[0145] S5. Bamboo Salt Crystal
[0146] The alkaline reinforced bamboo salt obtained in S4 is loaded into a small bamboo tube with an inner diameter of 5 cm and a height of 25 cm. The bamboo tubes are stacked horizontally and continuously baked for 5 hours using hollow rods C to obtain crystalline bamboo salt columns, which are crushed into small particles to obtain bamboo salt crystals of different colors.
[0147] In this embodiment, bamboo is cut down, and high-quality bamboo stalks are processed into bamboo segments, wherein the lower part of the bamboo segment has a bamboo node 0.5-5 cm away from the bottom end, and the middle of the bamboo segment contains no or 1-3 bamboo nodes, and then the bamboo segment is cut into bamboo tubes, and the inner diameter of the bamboo tubes is 6-20 cm. The moisture content of the bamboo tubes is between 10-30%. If the freshly made bamboo tubes lose water after being placed for a long time, the moisture content is increased by spraying to meet the requirements before salt filling.
[0148] In this embodiment, the bamboo raw material is the bamboo residue after making the bamboo tube in S3, and / or the bamboo residue produced during bamboo processing without any non-bamboo material. Specifically, the bamboo raw material can be the remaining bamboo roots, bamboo tips, bamboo branches and bamboo leaves on the bamboo stalks outside the processed bamboo tube, or the residue produced by the bamboo processing enterprise without any non-bamboo material as the bamboo residue.
[0149] The alkaline enhanced bamboo salt prepared in this embodiment is off-white in color, configured into a 0.9% saline solution with a pH of 10.52. The physical and chemical properties and heavy metal content meet the national standard requirements, and the content of mineral elements such as potassium, calcium, magnesium, iron, and zinc is higher than that of bamboo salt roasted by traditional methods.
[0150] The water used in the above embodiments is edible water, such as purified water, mineral water, well water, etc., preferably, mineral water.
[0151] The above is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent change made to the above embodiment according to the technical essence of the invention still falls within the protection scope of the technical solution of the present invention.
Claims
1. A highly efficient production method of alkaline enhanced bamboo salt using all bamboo materials, characterized in that: The method is: S1. Bamboo salt is processed with bamboo fuel: The bamboo raw material is crushed to obtain bamboo crushed material, dried to a moisture content of 8-18%, and then sieved, and the bamboo crushed material less than 5 cm in length is pressed into a hollow rod A, and the hollow rod A is made into bamboo charcoal; The bamboo crushed material with a length greater than 5 cm is pressed into a hollow rod B, and the hollow rod B is used as a biomass fuel; Adding pine needle granules and rosin or natural rosin to bamboo crushed materials with a length greater than 5 cm, and pressing them into hollow rods C as enhanced biomass fuel; S2. Preparation of bamboo ash extract: Adding 1-20 times the weight of the extract to the bamboo ash and stirring evenly, then leaching for 10-30 minutes and filtering to obtain bamboo ash residue and bamboo ash extract; The bamboo ash is a white inorganic substance that is free of chemical pollution and contains no organic matter and is left over from the combustion of bamboo raw materials. S3. Adjustment of bamboo salt moisture and packing: The bamboo ash extract or the bamboo ash extract and drinking water are sprayed on the raw salt to adjust the water content of the salt to 5-15%, thereby obtaining bamboo ash extract fortified salt, and then the bamboo ash extract fortified salt is loaded into a bamboo tube and compacted to obtain a bamboo tube filled with salt; the inner diameter of the bamboo tube is 6-20 cm; S4. Bamboo salt roasting: The hollow fuel A or B in S1 is used to bake the bamboo tube filled with salt for 0-2 hours to allow the moisture in the bamboo tube to penetrate into the salt. The hollow rod C is then used to bake the bamboo tube over a high fire until the bamboo tube burns. The baking time is 1-3 hours to form a dense salt column. The salt column is crushed to obtain a baked alkaline enhanced bamboo salt.
2. The method for producing alkaline enhanced bamboo salt by fully utilizing bamboo materials according to claim 1, characterized in that: The bamboo raw materials in S1 and S2 are bamboo residues after making the bamboo tubes in S3, and / or bamboo residues produced during bamboo processing that do not contain any non-bamboo materials.
3. The method for producing alkaline enhanced bamboo salt using all bamboo materials according to claim 1, characterized in that: The mass ratio of the bamboo crushed material, pine needle particle powder and rosin or natural rosin in S1 is (80-95):(0-15):(1-5).
4. The method for producing alkaline enhanced bamboo salt using all bamboo materials according to claim 1, characterized in that: Before the bamboo ash extract strengthening salt in S3 is loaded into the bamboo tube, the bamboo ash filter residue obtained in S2 is first added into the bamboo tube, and the height of the bamboo ash filter residue at the bottom of the bamboo tube is 0.1-1% of the height of the bamboo tube; After the bamboo ash extract and the salt-enhanced salt are loaded into the bamboo tube in S3, the mouth of the bamboo tube is sealed with yellow mud.
5. The method for producing alkaline enhanced bamboo salt using all bamboo materials according to claim 4, characterized in that: The bamboo ash residue obtained in S2 is added to the yellow mud.
6. The method for producing alkaline enhanced bamboo salt using all bamboo materials according to claim 1, characterized in that: The extract in S2 is water or an aqueous solution of acetic acid, and the aqueous solution of acetic acid is a mixture of acetic acid and water in a volume ratio of 1:
1.
7. The method for producing alkaline enhanced bamboo salt by fully utilizing bamboo materials according to claim 1 or 6, characterized in that: The temperature of the extract in S2 is 20-80°C.
8. The method for producing alkaline enhanced bamboo salt using all bamboo materials according to claim 1, characterized in that: The alkaline enhanced bamboo salt described in S4 is crushed and then repeatedly roasted 2-8 times as raw salt to obtain twice-roasted alkaline enhanced bamboo salt to eight-roasted alkaline enhanced bamboo salt.
9. A highly efficient method for producing alkaline enhanced bamboo salt using all bamboo materials according to any one of claims 1 to 8, characterized in that: The method further comprises: the alkaline enhanced bamboo salt obtained in S4 is subjected to high temperature calcination or small diameter bamboo enhanced baking to obtain alkaline enhanced bamboo salt crystals.
10. The method for producing alkaline enhanced bamboo salt using all bamboo materials according to claim 9, characterized in that: The small-diameter bamboo enhanced baking method is specifically as follows: the alkaline enhanced bamboo salt obtained in S4 is loaded into a small bamboo tube with an inner diameter of 2-5 cm and a height of 10-25 cm, the bamboo tubes are stacked horizontally, and the enhanced bamboo biomass fuel is used for continuous baking for 1-5 hours to obtain a crystalline bamboo salt column, which is crushed into small particles to obtain alkaline enhanced bamboo salt crystals of different colors; The high temperature calcination is specifically as follows: the alkaline enhanced bamboo salt obtained in S4 is placed in a high temperature furnace and melted at a high temperature of 1000-1200° C., and then cooled and crystallized after 0.5-2 hours to obtain alkaline enhanced bamboo salt crystals.