Process for producing edible alcohol and co-producing potassium fulvate by fermenting beet

Abstract

The invention relates to the technical field of production of potassium fulvate, in particular to a process for producing edible alcohol and co-producing potassium fulvate by fermenting beet. The method comprises the following steps: performing coarse crushing and fine crushing on beet to form slurry, adding squeezed water, and collecting into an adjusting tank; transferring the slurry into a conversion tank for biological conversion, then carrying out solid-liquid separation treatment to obtain juice and wet residues, and squeezing the wet residues; mixing the juice with the wine mother liquor, performing two-stage fermentation to obtain fermentation liquor, and concentrating the fermentation liquor to obtain edible alcohol and waste liquor; distilling the waste liquid and adding a fulvic acid transforming agent for fermentative degradation, and then evaporating to remove moisture and concentrating to generate a concentrated solution; lime milk and the concentrated solution are uniformly mixed and stirred for neutralization, and the neutralized concentrated solution is dehydrated and dried to generate potassium fulvic acid dry powder. According to the method disclosed by the invention, polysaccharide substances in the beet are subjected to sufficient enzymolysis by utilizing the biotransformation agent, and sugar contained in the beet is sufficiently released, so that the utilization rate of beet sugar is increased.

Description

[0001] This application is a divisional application of patent application CN202410716967.3, entitled "A Process for Producing Edible Alcohol and Co-producing Potassium Humate by Fermenting Sugar Beet," with the parent application filed on June 3, 2024. Technical Field

[0002] This invention relates to the field of potassium humate production technology, and more specifically, to a process for the co-production of potassium humate from sugar beet fermentation for the production of edible alcohol. Background Technology

[0003] Potassium humate is an important raw material for organic fertilizers and industries, and it is widely used in agriculture, medicine, food, veterinary medicine and other fields. As a fertilizer, it can improve soil aggregate structure, loosen soil, improve soil water and fertilizer retention capacity, regulate pH value, reduce the content of heavy metals in soil, and reduce the harm of salt ions to seeds and seedlings.

[0004] For example, CN112321844A describes a process for producing high-quality white sugar and humic acid powder from beets. The specific steps are as follows: 1) Carbonation treatment of sugar juice: Carbonation is used to remove suspended impurities and metal ions from beet sugar juice. The juice is filtered twice to obtain a clear juice; 2) Decalcification treatment: Cationic Na-type resin is used for single-column treatment; 3) Chromatographic separation: Decalcification treatment of sugar juice can reduce the calcium content in the solution. The purified sugar and non-sugar components are separated by a chromatographic separation system; 4) Concentration and crystallization: A four-stage crystallization purification process is used to reduce the color value of the syrup. After concentration and drying, high-purity white sugar can be obtained. The non-sugar components are concentrated and dried to obtain humic acid powder; 5) Packaging: The finished product is packaged and sold. This invention is based on the clarification stage in the sugar juice purification process. It uses a strong cation exchange resin process and dilute juice as the regeneration liquid. The sugar juice is not diluted and there is no sugar loss. It can be recycled. However, the process has the problem of not utilizing or not fully utilizing other polysaccharide components in beets. The utilization rate of beet sugar is low, resulting in high beet consumption and low economic benefits.

[0005] To improve the utilization rate of sugar beets and enhance the economic benefits of sugar beet production, a process for producing edible alcohol and potassium humate by fermenting sugar beets is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a process for producing edible alcohol and potassium humate by fermenting sugar beets, in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention aims to provide a process for the co-production of edible alcohol and potassium humate from sugar beet fermentation, comprising the following steps: S1. Chop the cleaned beets into coarse pieces, with the tubers ≤50mm. Then, use a hammer mill to finely crush and grind them. Pass the mixture through a sieve with a mesh size ≤1.2mm to form a beet pulp that flows out of the equipment. This process thoroughly breaks down the beet cells, releasing the sugars inside. Add press water to the pulp, with the amount of press water accounting for 10-30% of the pulp volume. After mixing, collect the mixture into an adjustment tank and adjust the sugar concentration to 12%, the temperature to 52℃, and the pH to 3.6. After adjustment, transfer the mixture to a conversion tank. S2. Add the bioconversion agent into the conversion tank and ensure thorough mixing for 3-8 hours to degrade the components of beet biomass, breaking down cellulose, hemicellulose, lignin, protein, pectin, and polysaccharides into monosaccharides for fermentation. After conversion, the slurry is fed into a diaphragm plate and frame filter press. The juice passing through a 100-mesh precision sieve is divided into two parts. One part of the juice is sent to prepare fermentation broth, and the other part is sent to evaporation and concentration. During evaporation and concentration, the juice is concentrated from dilute sugar juice to concentrated sugar juice with a sugar concentration of 50-65% through the evaporation system. The particles or suspended matter on the sieve form wet residue and are sent for filtration and pressing. S3. The juice is sent to a pre-fermentation tank. The sugar concentration is adjusted to 22-24%, the temperature to 32℃, and the pH to 4.0. Ammonium sulfate or urea (0.25% of the beet pulp) and penicillin (0.0001%) are added. During the pressing season, the juice obtained from beets is used as the raw material. During the non-pressing season, the stored concentrated sugar juice is diluted to a sugar concentration of 22-24% as the raw material. The juice is mixed with the mother liquor and then fermented in two stages to obtain the fermentation liquid. After fermentation is mature, the fermentation liquid is sent to the distillation system. The alcohol contained in the fermentation liquid is concentrated to obtain edible alcohol. The waste liquid is discharged at 60℃ for further processing. S4. Adjust the temperature of the distillation waste liquid to 60-80℃ and add fulvic acid conversion agent for fermentation and degradation. After 8-10 hours of high-temperature aerobic fermentation, the organic matter in the tank is fully degraded to produce potassium fulvic acid. Then, the distillation waste liquid is filtered through a 100-mesh plate and frame filter to remove solid residues or suspended matter, reduce the content of insoluble substances in the waste liquid, and further send the waste liquid to an evaporation device for concentration. The water is removed by negative pressure evaporation, and the organic matter in the waste liquid is gradually concentrated so that the mass ratio of solids in the waste liquid reaches 40-50%. S5. Prepare lime milk by mixing lime milk with concentrated liquid and stirring evenly for neutralization. The pH value during neutralization should be between 6.2 and 6.4, and the neutralization time should be ≥2 hours. After neutralization, the concentrated liquid is dehydrated and dried to produce potassium humate powder.

[0008] Preferably, in step S1, the sugar beet is high-quality, high-sugar sugar beet from Xinjiang.

[0009] Preferably, in step S1, the beets are dry-processed to remove stones, mud, roots, and leaf impurities, then sprayed with water by a drum to remove impurities, and finally further cleaned by an immersion roller washing machine. Two washing pools are provided, and the circulating water is reused in three cycles. The water is stopped in a pool to allow sediment to settle and remove deposits. Sewage is discharged and fresh water is replaced regularly according to the water quality.

[0010] Preferably, in step S2, the conversion agent is one or more of cellulase, hemicellulase, ligninase, acidic protease, and pectinase.

[0011] Preferably, the conversion agent comprises galacturonic acid polymerase added at 0.5% of beet pulp and compound cellulase added at 0.5% of beet pulp.

[0012] Preferably, in step S2, undegraded biomass particles or suspended solids are recovered by pressing or pressing out the sugar-containing water using a diaphragm plate and frame filter press. A three-stage filtration process is adopted. The filtered water from the first-stage diaphragm plate and frame filter press is used as the pressing water and enters step S1. The wet residue is sent to the second-stage screw press. The second-stage filtration uses a screw press. The pressing water is sent to the mixing tank at the front end of the first-stage diaphragm plate and frame filter press to mix with the wet residue. The wet residue is sent to the third-stage screw press. The pressing water from the third-stage screw press is sent to the mixing tank at the front end of the second-stage screw press to mix with the wet residue from the first-stage diaphragm plate and frame filter press. The wet residue is directly sold to farmers.

[0013] Preferably, in step S3, the juice from the pre-fermentation tank is mixed with the mother liquor from the mother liquor tank. During the second stage of fermentation, the yeast count in the mother liquor tank is ≥200 million / ml, the dilution ratio of the added liquor is 5-8%, the fermentation time is 36 hours, and the fermentation is judged to be complete based on the fermentation analysis indicators. Then, the pH is adjusted to 6.0, and 2% is inoculated. The inoculation ratio of Candida tropicalis, Pseudomonas aeruginosa, and Candida utilis is 1:2:2. Fermentation is carried out for 60 hours, and the fermentation is judged to be mature based on the glucose content being ≤0.05%.

[0014] Preferably, in step S5, the spray dryer uses superheated steam at 335.6℃ as a heat source. The generated waste steam enters the waste heat coupling device. After being washed by hot water in the waste heat coupling device, it absorbs the heat energy of the waste steam and rises to 90-95℃. The hot water enters the flash tank to generate flash steam, which serves as the heat source for the evaporation and concentration device, thus achieving heat coupling. The concentrated liquid after neutralization enters the spray drying tower for dehydration and drying.

[0015] Preferably, in step S5, the potassium humate dry powder produced after drying is sent to packaging by a pneumatic conveying system, and the packaged potassium humate dry powder is sold as a product.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the process of producing edible alcohol and potassium humate by fermenting sugar beets, a bioconversion agent is used to fully enzymatically decompose the complex polysaccharides such as cellulose, hemicellulose, lignin, and galacturonic acid polymers in sugar beets, thereby fully releasing the sugar content of sugar beets, improving the utilization rate of sugar beets, increasing product yield, and reducing production costs. After the sugar beets are crushed, 50% is directly used to produce alcohol, and the remaining 50% is concentrated and stored as concentrated sugar. Sugar beets are used from October to March of the following year, and the stored concentrated sugar is used from April to September, ensuring that the factory can operate year-round.

[0017] 2. In this process of producing edible alcohol and potassium humate from sugar beet fermentation, the biochemical potassium humate is produced using alcohol waste liquid from sugar beet fermentation. This solves the industry problem of low added value from concentrated alcohol waste liquid or difficulty in controlling pollution from biogas production. It extends the product chain, increases product added value, and uses superheated steam as a heat source, with the exhaust steam from the spray dryer as the heat source for the evaporation and concentration device, achieving thermal coupling and saving more than 33% of heat energy. Furthermore, the three-stage pressing and filtration process significantly improves pressing efficiency after the biomass conversion agent fully enzymatically hydrolyzes the sugar beet biomass, completely replacing the traditional percolator, reducing equipment investment, and making operation more flexible. Attached Figure Description

[0018] Figure 1 This is the overall flowchart of the present invention. Detailed Implementation

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] The process of producing alcohol from sugar beets generally involves shredding and extracting the sugar, with the extract used for fermentation to produce alcohol, and the wet residue dried into beet pulp. Many large sugar beet factories in China utilize the waste molasses from sugar production to ferment and produce alcohol. The molasses is diluted to a certain concentration, fermented, and distilled to obtain edible alcohol. However, this method has the following drawbacks: 1. Existing sugar beet processing plants or literature on sugar beet alcohol production only utilize sucrose from sugar beets, resulting in the underutilization or insufficient utilization of other polysaccharide components. In addition, the treatment of alcohol waste liquid is a difficult problem in the industry. Generally, it is concentrated and dried together with sugar beet pulp, or it is sold to other companies or burned in coal. 2. Currently, after sugar beets are used to produce alcohol, the remaining nutrients are dried and dehydrated to make a meal. This dehydration process destroys many nutrients, almost eliminating water-soluble vitamins and reducing nutritional value. Frequent feeding of this product can lead to nutrient deficiencies and malnutrition. Furthermore, during the fermentation process, harmful substances from the fermentation liquid adhere to the surface of the wet meal; frequent feeding of this product can cause acute gastroenteritis, resulting in abdominal pain. 3. Alcohol enterprises that use sugar beets as raw materials can only operate during the sugar beet crushing season. Due to the constraints of raw materials, the annual production period is at most 5 months. The short operating time results in low economic benefits and high operating costs. 4. After sugar beets are used to produce alcohol, the only byproduct is sugar beet meal, which has high consumption and low price, resulting in low economic benefits. 5. The co-production of potassium humate from waste liquid after molasses fermentation presents a problem of high energy consumption.

[0021] Therefore, please refer to Figure 1 As shown, the purpose of this embodiment is to provide a process for producing edible alcohol and potassium humate by fermenting sugar beets, including the following steps: S1. High-quality sugar beets from Xinjiang, my country are selected as raw materials. The raw materials are dry-processed to remove impurities such as stones, mud, roots, and leaves. After being sprayed with water by a drum to remove impurities, they are further cleaned by an immersion roller washing machine. There are two washing pools with circulating water that is reused in three cycles. The water is stopped in the pool to allow sediment to settle and remove deposits. The sewage is discharged and fresh water is replaced regularly according to the water quality. First, coarsely chop the cleaned beets into chunks, ensuring the tubers are ≤50mm. Then, use a hammer mill to finely crush and grind them. Finally, pass the mixture through a sieve with a mesh size ≤1.2mm to form a slurry that flows out of the equipment, fully disrupting the beet cells and releasing the sugars inside. Add pressing water to the slurry, the water volume accounting for 10-30% of the beet slurry, preferably 20%, and after mixing, collect it into an adjustment tank to adjust the sugar concentration to 12%, temperature to 52℃, pH to 3.6, etc. After adjustment, pump it into a conversion tank. S2. Beetroot is a nutrient-rich vegetable containing carbohydrates, cellulose, vitamins, minerals, antioxidants, sugars, and other nutrients. To fully break down beetroot cells and release the sugars, a temperature of 52°C and a pH of 3.6 are maintained in the conversion tank. A bioconversion agent is added to decompose polysaccharides such as cellulose, hemicellulose, lignin, protein, and pectin, converting them into monosaccharides for fermentation. The bioconversion agent includes 0.5% galacturonic acid polymerase and 0.5% compound cellulase added to the beet pulp. The mixture is thoroughly mixed in the tank for 3-8 hours, preferably 6 hours. Under the combined action of multiple enzymes, various biomass components of the beet are degraded, transforming them from high molecular weight compounds into small molecular organic matter. After conversion, the slurry is fed into a diaphragm plate and frame filter press. The juice is divided into two parts by passing through a 100-mesh precision sieve. One part of the juice is sent to prepare fermentation broth, and the other part of the juice is sent to evaporate and concentrate. The particles or suspended matter on the sieve form wet residue and are sent to filter and press. Undegraded biomass particles or suspended solids are recovered by pressing or pressing out the sugar-containing moisture using a diaphragm plate and frame filter press. To ensure filtration efficiency, a three-stage filtration process is employed. The filtered water from the first-stage diaphragm plate and frame filter press is used as press water and enters S1. The filter press requires high filtration precision, and the content of particles and suspended solids in the filtered water should be minimized. The wet residue is sent to the second-stage screw press. The second-stage filtration uses a screw press, and the press water is sent to the mixing tank at the front end of the first-stage diaphragm plate and frame filter press to mix with the wet residue. The wet residue is then sent to the third-stage screw press. The press water from the third-stage screw press is sent to the mixing tank at the front end of the second-stage screw press to mix with the wet residue from the first-stage diaphragm plate and frame filter press. The wet residue is then sold directly to farmers.

[0022] During evaporation and concentration, the juice is concentrated from dilute sugar juice to concentrated sugar juice with a sugar concentration of 50-65% through an evaporation system. The purpose is to convert sugar beets into concentrated sugar juice for long-term storage to meet the production needs during the off-season. Since the sugar beet crushing season is only 5 months, the amount of concentrated sugar juice stored needs to ensure 5-6 months of normal production. Therefore, a large amount of concentrated sugar juice is stored in tanks. S3. Transfer the juice into a pre-fermentation tank, adjust the sugar concentration to 22-24%, temperature to 32℃, and pH to 4.0. Add ammonium sulfate or urea (0.25% of the beet pulp) and penicillin (0.0001%). During the pressing season, use beet juice as raw material; during the non-pressing season, use stored concentrated sugar juice diluted to a sugar concentration of 22-24%. Mix the juice from the pre-fermentation tank with the mother liquor from the mother liquor tank. During the second stage of fermentation, the yeast count in the mother liquor tank should be ≥200 million / ml. The dilution ratio of the added liquor should be 5-8%, and the fermentation time should be 36 hours. Fermentation should be judged to be complete based on the fermentation analysis indicators. For example, if the sugar content is ≤0.2%, the fermentation to produce edible alcohol is considered complete. Then, adjust the pH to 6.0, inoculate 2%, and inoculate with Candida tropicalis, Pseudomonas aeruginosa, and Candida utilis in a ratio of 1:2:2. Ferment for 60 hours. Fermentation maturity should be judged based on the glucose content being ≤0.05%. After fermentation is complete, the fermentation liquid is sent to the distillation system. The alcohol contained in the fermentation liquid is concentrated to produce edible alcohol. The waste liquid is discharged at 60°C for further processing. S4. Adjust the temperature of the distillation waste liquid to 60-80℃. At this time, add fulvic acid conversion agent, namely fulvic acid compound bacterial liquid, to carry out fulvic acid fermentation. After 8-10 hours of high-temperature aerobic fermentation, the organic matter in the tank is fully degraded to generate potassium fulvicate. Then, filter the distillation waste liquid through a 100-mesh plate and frame filter to remove solid residues or suspended matter, reduce the content of insoluble substances in the waste liquid, and further send the waste liquid to an evaporation device for concentration. The negative pressure evaporation removes water and gradually concentrates the organic matter in the waste liquid, so that the mass ratio of solids in the waste liquid reaches 40-50%. S5. Prepare lime milk by mixing lime milk with concentrated liquid from evaporation and stirring evenly to allow the lime milk to fully react with the concentrated liquid, thereby neutralizing the concentrated liquid. The pH value during neutralization should be between 6.2 and 6.4, and the neutralization time should be ≥2 hours. In this process, the spray dryer uses 335.6℃ superheated steam as a heat source. The generated waste steam enters the waste heat coupling device. After being washed by hot water in the waste heat coupling device, it absorbs the heat energy of the waste steam and rises to 90-95℃. The hot water enters the flash tank to generate flash steam, which serves as the heat source for the evaporation and concentration device, thus achieving heat coupling. The concentrated liquid after neutralization enters the spray drying tower for dehydration and drying. The potassium humate dry powder produced after drying is sent to packaging by the air conveying system. The packaged potassium humate dry powder is sold as a product.

[0023] In this invention, bioconversion agents such as cellulase, hemicellulase, ligninase, acidic protease, and pectinase are added to enzymatically hydrolyze the polysaccharide macromolecules, ultimately forming monosaccharides. These monosaccharides are then used for fermentation to produce potassium humate. 95% of the sucrose in sugar beets is converted into alcohol, with the remaining 5% being unconverted sucrose and a small amount lost during processing. The sugar beet contains 85% cellulose, lignin, hemicellulose, and pectin, which together constitute 6% of the sugar beet meal. This translates to 5.1% of the total sugar beet composition, which, based on complete conversion, yields 25,500 tons of potassium humate annually (consumed on a dry basis). Therefore, using this process, consuming 500,000 tons of sugar beets annually can produce 25,500 tons of potassium humate on a dry basis, equivalent to 0.051 tons of potassium humate per ton of sugar beet.

[0024] In this invention, a bioconverter is used to fully enzymatically hydrolyze complex polysaccharides such as cellulose, hemicellulose, lignin, and galacturonic acid polymers in sugar beets, thereby fully releasing the sugar content of sugar beets, improving the utilization rate of sugar beets, increasing product yield, and reducing production costs. After the sugar beets are crushed, 50% is directly used to produce alcohol, and the remaining 50% is concentrated and stored as concentrated sugar. Sugar beets are used from October to March of the following year, and the stored concentrated sugar is used from April to September, ensuring that the factory can operate and produce throughout the year. The production of biochemical potassium humate from alcohol waste liquid solves the industry problem of low added value from alcohol waste liquid concentration or difficulty in controlling pollution from biogas production. It extends the product chain, increases product added value, and uses superheated steam as a heat source, using the exhaust steam from the spray dryer as a heat source for the evaporation and concentration device, achieving thermal coupling and saving more than 33% of heat energy. Furthermore, the three-stage pressing and filtration process significantly improves pressing efficiency after the biomass conversion agent fully enzymatically hydrolyzes sugar beet biomass, completely replacing the traditional percolator, reducing equipment investment, and making operation more flexible.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A process for the production of edible alcohol and co-production of potassium fulvate from sugar beet by fermentation, characterized in that, It comprises the following steps: S1, cut the cleaned beet into pieces and coarsely crush them so that the tubers are ≤50 mm, then finely crush them with a hammer crusher, grind them, and pass them through a screen with a mesh size ≤1.2 mm so that the beets form a slurry and flow out of the device, for fully destroying the cells of the beets and releasing the sugar in the cells, then add press water to the slurry, the amount of press water added accounting for 10-30% of the slurry, mix and collect into an adjusting tank to adjust the sugar concentration to 12%, the temperature to 52℃, and the PH to 3.6, then pump into a conversion tank; S2, add a biological conversion agent in the conversion tank to ensure that the tank is fully mixed for 3-8 hours to degrade the biomass components of the beets, decompose cellulose, hemicellulose, lignin, protein, and pectin polysaccharides, and convert them into monosaccharides for fermentation, then pump the slurry after conversion into a diaphragm type plate and frame filter press, pass the juice through a 100-mesh precision screen to divide it into two parts, one part of the juice is sent to prepare a fermentation liquor, and the other part of the juice is sent to evaporate and concentrate, when evaporating and concentrating, pass the juice through an evaporation system to concentrate the dilute sugar juice into thick sugar juice with a sugar concentration of 50-65%, and send the particles or suspended matter on the screen to a filter press for pressing; S3, send the juice into a pre-fermentation tank, adjust the sugar concentration in the tank to 22-24%, the temperature to 32℃, and the PH to 4.0, add 0.25% of ammonium sulfate or urea and 0.0001% of penicillin based on the amount of beet slurry, use the juice prepared from beets in the season as raw material, and dilute the stored thick sugar juice to 22-24% sugar concentration as raw material in the off-season, mix the juice with the yeast mother liquor, and obtain a fermentation liquor through two-stage fermentation, after the fermentation is mature, send the fermentation liquor to a distillation system, concentrate the alcohol contained in the fermentation liquor to prepare edible alcohol, and discharge the waste liquid at 60℃ for further processing; S4, adjust the temperature of the distillation waste liquid to 60-80℃ and add a fulvic acid conversion agent for fermentation and degradation, through 8-10 hours of high-temperature aerobic fermentation, fully degrade the organic matter in the tank to generate potassium fulvate, filter the waste liquid after distillation through a 100-mesh plate and frame machine to remove solid residues or suspended matter, reduce the content of insoluble substances in the waste liquid, and further send the waste liquid to an evaporation device for concentration, remove water under negative pressure, and gradually concentrate the organic matter in the waste liquid so that the mass fraction of solid matter in the waste liquid reaches 40-50%; S5, make lime into lime milk, mix and stir the lime milk with the concentrated liquid for neutralization, the PH value during neutralization is between 6.2-6.4, the neutralization time is ≥2 hours, and the concentrated liquid after neutralization is dehydrated and dried to produce potassium fulvate dry powder.

2. The process for the production of edible alcohol along with potassium fulvate from sugar beet by fermentation as claimed in claim 1 wherein: In S1, the beets are high-quality high-sugar beets from Xinjiang.

3. The process for the production of edible alcohol along with potassium fulvate from sugar beet pulp as claimed in claim 1 wherein: In S1, the beets are subjected to dry method to remove stones, sand, roots, leaves and other impurities, then subjected to water spraying on a roller to remove impurities, and finally subjected to further cleaning in a water immersion type roller washing machine, two cleaning water pools are provided, the circulating water is recycled, three cycles are achieved for rotation, the water pool is stopped for sedimentation to remove sediments, and the water quality is checked to discharge waste and replace fresh water in a timely manner.

4. The process for the production of edible alcohol along with potassium fulvate from sugar beet pulp as claimed in claim 1 wherein: The S2, the material conversion agent adopts one or more of cellulase, hemicellulase, ligninase, acid protease, pectinase.

5. The process for the production of edible alcohol along with potassium fulvate from sugar beet pulp as claimed in claim 4 wherein: The material conversion agent includes adding 0.5% of the beet slurry galacturonic acid polymerase and 0.5% of the beet slurry composite cellulase.

6. The process for the production of edible alcohol along with potassium fulvate from sugar beet pulp as claimed in claim 1 wherein: In the S2, the undegraded biomass particles or suspensions are recovered by pressing or by diaphragm plate and frame filter press to squeeze out sugar-containing water, three-stage filtration is adopted, the filtration water of the first-stage diaphragm plate and frame filter press is used as the squeezing water into the step S1, the wet residue is sent to the second-stage screw press, the second-stage filtration selects the screw press, the squeezing water is sent to the front-end mixing tank of the first-stage diaphragm plate and frame filter press to mix with the wet residue, the wet residue is sent to the third-stage screw press, the squeezing water of the third-stage screw press is sent to the front-end mixing tank of the second-stage screw press to mix with the wet residue from the first-stage diaphragm plate and frame filter press, and the wet residue is directly sold to breeders.

7. The process for the production of edible alcohol along with potassium fulvate from sugar beet pulp as claimed in claim 1 wherein: In the S3, the juice of the pre-fermentation tank is mixed with the yeast mother liquid from the yeast mother tank, the yeast number of the yeast mother tank in the second-stage fermentation is ≥2 billion / ml, the dilution ratio of the flow addition is 5-8%, the fermentation time is 36 hours, the fermentation is ended according to the fermentation analysis index, then the PH is adjusted to 6.0, 2% is inoculated, the inoculation ratio of Candida tropicalis, Pseudomonas and Candida utilis is 1:2:2, the fermentation is 60 hours, and the fermentation is mature according to the glucose content ≤0.05%.

8. The process for the production of edible alcohol along with potassium fulvate from sugar beet pulp as claimed in claim 1 wherein: In the S5, the spray dryer uses 335.6℃ superheated steam as the heat source, the waste steam enters the waste heat coupling device, and the waste steam heat energy is increased to 90-95℃ after washing by hot water in the waste heat coupling device, the hot water enters the flash tank to generate flash steam as the heat source of the evaporation and concentration device to realize heat coupling, and the concentrated liquid after neutralization is dehydrated and dried in the spray drying tower.

9. The process for the production of edible alcohol along with potassium fulvate from sugar beet pulp as claimed in claim 1 wherein: In the S5, the potassium fulvate dry powder produced after drying is sent to packaging by the air conveying system, and the packaged potassium fulvate dry powder is sold as a product.

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