Method for preparing sodium alginate from kelp
Technical Field The invention relates to marine chemical sodium alginate products, kelp in particular to a method for producing sodium alginate. Background Art At present, most of the sodium alginate to the production of the kelp as raw material, its preparation process comprises a desalination kelp, soaking water washing, digesting, dilution, foaming floating, filtering, calcified, decalcifing, dehydration, neutralization, granulation drying and grinding, numerous steps, more production time-consuming; and because the temperature difference from the north to south, illumination differences in the effects of such factors, the growth of the kelp there has long been a late a maturation period, in the same sea areas or seedling ropes with a kelp, its maturation has also, therefore, from the obtained 5 extends to the mid-month 7 month, growth speed is slow, resulting in high cost of the product. Content of the invention The present invention is directed to using kelp as raw material of the above-mentioned sodium alginate producing insufficient, a kelp as raw material for preparing ALG method. The technical scheme of the invention is:a kind of the kelp preparation ALG method, the kelp as raw materials, the steps are as follows: A, pre-processing of raw materials (1) kelp sop, fixation Adding in the pool of soaking the kelp quantity 1-3 times of the tap water, and adding kelp quantity 10-15% formaldehyde solution, and then the kelp uniform pitch in the soaking tank, soaking 16 ± 0.5 hours, when the formaldehyde solution is kelp absorption after all, then adding tap water to the kelp the above, the soak time is 20-24 hours; (2) cutting After the soaking time when reaching, vegetable cutting machine the kelp to cutting; B, digestion The kelp of the back of the cage after the water in the pan is pumped into the digestion, control temperature, fill the hot water, by adding soda and formaldehyde, then three-stage digestion; (1) flushing dilute Glue pot so that the rough flushes the thin pond auger, the filter residue is retracted into the recovery digestion pot, at the same time adding flushes the net water or diluted by the running water; after recovering the residue, by adding pure alkali and govind digestion, then filtering, flushing dilute; (2) coarse Dilute the flushing solution, through a 6 mesh coarse filter, is rough liquid cement pondlatter liquid cement ; (3) foaming floating A. Preparation flocculating agent B. Foaming The glue solution is pumped into the foaming machine, at the same time adding flocculant, along with liquid cement enter into the foaming a foaming machine; C. Float The foamed liquid will be injected into the floating pond standstill, after clarifying treats the liquid cement , desorbing supernatant, the supernatant fluid is put into the liquid storage tank; (4) filtering Through the flat filter, antifreezing of the float after filtering, the filtrate is put into the storage tank after the fine; C, calcified, decalcifing (1) calcium Calcium chloride solution is injected in the solution, then adding Cl2, laryngeal the glue; (2) decalcifing The calcification, transforming the good decalcification calcium alginate; transforming the good time into a calcium alginate decalcify pot , adding secondary decalcifing waste acid water, the draining after a decalcifing mixing cage enters the secondary decalcify pot , then adding dilute hydrochloric acid, the secondary decalcifing auger enter the washing tank after dehydration; D, dehydration The decalcifing of the alginic acid is injected in a stage screw press of the storage case, of materials to the material storage box 2/3 time, carrying out a dehydration; after dehydration of the block to the alginate of the secondary screw press for secondary dewatering; E, neutralization, drying (1) and transformed in In the conversion of a tank by adding alcohol and caustic soda, then inputs alginic acid; test PH value, at the same time adding caustic soda, when the to the neutral or photon, by adding sodium hypochlorite bleach, 5 minutes, continue to add caustic soda solution; when the value is stable PH 9 ± 0.5 time, the rubber block will be translated into the centrifugal machine is centrifugal; the rubber after centrifugal wind is sent to the drying process and, then granulating and drying; (2) evaporation recovery Recovery after centrifugal waste alcohol, after the completion of the recovery tank, adding hydrochloric acid, control PH value, the condensed water tower through the alcohol to the alcohol recovery system; F, after drying the material to the compounding of glue; G, milling (1) after compounding the material of the glue; (2) milling The feeding from the inlet orifice, through the orifice plate to control the charging, after the feeding, the material by the grinding roll milling glue; (3) mixing of finished product The glue is poured into the powder in the mixing tank, uniformly mixed; (4) the mixing of rubber powder after packaging; Preferably, step B in said temperature control in the 50-70 between [...] , hot water topping-up to 15-18 times, and it is the dry soda ash quantity of kelp quantity 25-40%, plus formaldehyde quantity is dry the kelp quantity 5-8%; Preferably, in the step B three-stage digestion as kelp in the 1st stage digestion stuffy pot in the pot, stirring, then enter the 1st stage refiner ground, milled in the 2nd stage digestion after stuffy pot in the pot, mixing into the 2nd stage refiner ground, milled in the 3rd stage digestion pot after digestion; Preferably, the foaming B floating in the steps of the flocculating agent is formulated such, the flocculating agent has, in the dissolving tank, the water is added into the first, then adding flocculant glacial acetic acid of the weight of the same, to stir, then adding flocculant, is fully dissolved; good flocculating agent of the dissolved into the dilution in the pool after filtering, add water for flushes thinly , then put into a metering tank; Preferably, the evaporation of the steps in E PH value to control in the recovery of the 5.5-6.5 between; Preferably, the compounding of steps F is such that the, elevator for lifting the material of the platform to the mixer, the rubber is poured into the mixer, mixing 15-20 minutes, after proper, to be crushed; Preferably, the 1st stage digestion time for storing in the pot 90-150 minutes, the stirring time is 30-60 minutes, the 2nd stage digestion time for storing in the pot 60-120 minutes, the stirring time is 30-60 minutes. The beneficial effect of the invention is: the invention adopts the kelp as raw materials, the world of the kelp is the fastest one of the growth of the plant, can be grown per day 30-60 cm, growth throughout the year, each year can harvest 3-4 time; the continental shelf waters can be cultivated on a large scale, of the kelp highlight the surface of the blade is more concentrated in the sea water, is favorable for harvesting; reducing the production cost. The invention also uses a flocculating agent for foaming floating, a floating time is shortened, improving the quality of products. Mode of execution Specific Embodiment 1:a sodium alginate preparation method, the kelp as raw materials, the preparation steps are as follows: 1, kelp pre-treatment (1) kelp sop, fixation kelp quantity in soaking in the pool to 1 times of the tap water, and adding kelp quantity 10% formaldehyde solution, and then the kelp uniform pitch in the soaking tank, soaking 16 ± 0.5 hours, when the formaldehyde solution is kelp absorption after all, then adding tap water to the kelp the above, the soak time is 20 hours. (2) cutting After the dipping time of the, the fixation water discharge, vegetable cutting machine the kelp to cutting, shredding of the kelp by washing with hot water is pumped into the digestion of winch in the boiler. 2, digestion Kelp in the pot is pumped into the digestion temperature control in the 50 [...] , topping-up to 15 times the hot water, and to dry kelp quantitysoda ash quantity 25%, of the dry formaldehyde quantitykelp quantity with 5%. Digestion is divided into three levels of digestion, kelp in the 1st stage digestion stuffy pot in the pot 90 minutes, stirring 30 minutes, then enter the 1st stage refiner ground, milled in the 2nd stage digestion after stuffy pot in the pot 60 minutes, stirring 30 minutes after the level entering the 2nd refiner ground, milled in the 3rd stage digestion pot after digestion, not Digest to Digest the kelp recycling. (1) flushing dilute A. Start stirring, opening water valve flushes the net , glue pot so that the rough flushes the thin pond auger, the filter residue is retracted into the recovery digestion pot, is added at the same time 40 mesh filtering flushes the net water or diluted by the running water, for kelp of flushes the thin quantity 100 times. B. At the same time of flushes thinly , opening compressor, the compressed air is used to stir flushes the thin fluid , flushes the thin fluid the flow to 90 seconds. C. After recovering the residue, by adding pure alkali, open steam heating digestion, then filtering, flushes thinly , drain residue. (2) coarse Dilute the flushing solution, for coarse filtration, first open the 6 mesh filter, flushes the net water valve is opened, opening glue solution pump ., glue flow regulated at the same time, make the glue solution smoothly pass through the 6 mesh, the overflowing glue, enters the liquid cement pondafter filtering, liquid cement , flushes the net water recovery. (3) foaming floating A. Preparation of a flocculating agent The flocculating agent has, firstly adding 100 times of water to in the dissolving tank, then adding flocculant glacial acetic acid of the weight of the same, to stir, then adding flocculant, dynamic and static combination of the fully dissolved, 6 ± 0.5 hours to dissolve completely. Good flocculating agent of the dissolved through the 18 mesh in mesh bag filter into the diluted pool, adding 10 times of water flushing dilute, into the metering tank spare. B. Foaming Start foaming machine, to the normal operation, the liquid is pumped into the foaming machine. After the glue solution pump. started, immediately open the adjusting flocculating agent adding valve, the foaming the foam entering along with liquid cement , attention to the air intake should be avoided as far as possible. Foaming is completed, close the flocculating agent adding valve, and then stop the glue solution pump. operation. C. Float The foamed liquid will be injected into the floating pond, a floating pond filled with time, the interruption because of 5 minutes shall not be re-injected into the original pool. The floating tank filled with liquid, static 2.5 hours, after clarifying treats the liquid cement , open the liquid valve, close the recovery valve, desorbing supernatant fluid, then the recovered liquid is put into the recovery tank, the recovered liquid re- flushes thinly , centrifugal foaming, floating, clear liquid into the liquid storage tank. (4) filtering Opening flat filter, the floating of the antifreezing in turn also through the upper layer of 120 mesh, the lower layer 200 mesh filtration, filtrate enters the accumulator tank , flushes the net water recovery. In the filtration process, the inlet valve be regulated at any time, the quality of the glue solution is ensured for controlling the flow speed, and should at any time inspect the filter operating condition, such as discovery the mesh runs , crushing should immediately stop the vehicle for repair. 3, calcified, decalcifing (1) calcium Opening calcified tank stirrer, into the content is 9% calcium chloride solution of the of the precipitation, starting glue solution pump ., control calcium water flow, and regulating Cl2 added in the amount of, and then sequentially starting material raking devices which, disintegrator, transforming the good calcium alginate into decalcitied process. Adjusting pressure sodium and calcium chloride solution, the calcium-containing water waste calcium the 0.5 [...] , the glue the 0.48 [...] , 6.5 PH value, the pressure in the buffer tank to the attention of the chlorine 0.18 MPa, flow meter shall not enters the liquid cement. The calcification, to close the outlet on the, longer off chlorine buffer outlet valve, and then sequentially stops the clear rubber liquid pump , calcified stirrer, material raking devices which, pulverizer. (2) decalcifing Sequentially starting a, secondary the decalcify stirs the cage (80 mesh) and a, secondary decalcifing stirrer and three-stage water washing cage, will be translated is good calcium alginate decalcify pot into a time, adding secondary decalcifing waste acid water, the draining after a decalcifing mixing cage enters the secondary decalcify pot , then adding content 1% dilute hydrochloric acid, hydrochloric acid added amount of adjustment, by the secondary decalcifing auger enter the washing tank after dehydration, cages for draining evacuation dehydration section. After washing for preparing recovering waste acid water hydrochloric acid, a decalcifing waste acidwater to calcified. Finally, stop all sequentially cages and decalcifing stirrer. 4, dehydration (1) the decalcifing of the alginic acid is injected in a stage screw press of the storage case, of materials to the material storage box 2/3 time, starting screw press, and timely adjust the gate to keep the material of the storage case. (2) adjusting the rotational speed of the press, so that the charging/discharging balance and as far as possible to reduce the press water. (3) the level of the spiral of the alginic acid block into the two-stage screw press for secondary dewatering. (4) secondary dehydrating acid block requires moisture content of 65%, failing to meet requirements, need to press, until the meet the requirements. 5, neutralization, drying (1) and transformed in Crushed according to each bag alginate 20 kg bag, into the liquid phase conversion process. matches the scale to the alcohol 65° 80 kg, caustic soda 20 kg by adding conversion tank, starting stirring, then inputs alginic acid 80 kg. Continually testing PH value, at the same time slowly adding caustic soda, when the to the neutral or photon, by adding sodium hypochlorite bleach, 5 minutes, to continue adding caustic soda solution. When the value is stable PH 9 ± 0.5 time, stop stirring (stirring process as a whole 20 minutes), the transform of the good into the centrifuge. Discharging centrifugal front, the mesh bag in a centrifugal machine paving the whole is good, puts the material booth to be even , the rotating centrifuge is started by hand, the centrifugal the aqueous rubber 50%. Centrifugal is completed, self-deceleration required parking, shall not mechanical brake. After stopping, the rubber block crushing air sent to the drying process, the water in the mixing tank, the moisture content reach 55%, then granulating and drying. (2) evaporation recovery After centrifugal after waste alcohol recovery pool, adding hydrochloric acid and stir, the value control PH 5.5. Checking alcohol tower to condense water system, a tap water inlet recovery valve and open. Opening alcohol the tower enters steam valve, to ethyl alcohol tower heating, when temperature is raised to the bottom of the tower the 104 when [...] , the column temperature is raised to 97 the feeding pump is started [...] , the feed liquid is fed into a distillation tower, the charging rate is adjusted, opened after the feeding waste liquid valve. takes when the liquor required according to the degree of, alcohol measure the degree of the reflux that do not meet the requirements, qualified into the recovered alcohol storage tank off return valve. According to the bottom of the tower, tower temperature regulating inlet pressure, secondary condenser temperature control in the 27 [...]. Waste liquid xie Pai alcohol content is 0.05%. After the work is finished, the valve is closed according to the requirements of the distillation column. 6, mixed Elevator for lifting the material to the mixer platform, will each batch of 2 tons of quantity is poured into the mixer, mixing 15 minutes, sampling and testing proper, crushing the qualified, if the non-qualified need to be re-mixed. 7, milling (1) feeding Closing the power supply main switch a hoister is used by the material in the material storage box into the vibrating screen, vibrating screen shall not be shut down when in use, the screen must be to stop the processing of the material in the rear can be stopped police officers, against external impurities into the, non-qualified material is not allowed in the storage box input. (2) milling Sequentially starting mill, an induced draft fan, control button bag-type dust remover, and open the high pressure gas valve, vibrating screen, in addition to iron, the airlock. After the starting up, carefully inspect the electrical equipment in the no-load operation, no abnormal circumstances the confirmation, can be feeding crushing. From the feeding port feeding is started, the feeding speed by feed inlet gate control, but cannot exceed the limit of the apparatus allow the wind delivers the quantity (550 kilograms/hour). Feeding the rear, first adjusts the roll grips distance, enables the grinder roll of wrapping the mutual distance between both sides can not be offset, or tie distance too tight, the rubber powder temperature is 60 the [...] , 6-10 month shall not exceed the 70 [...]. In the process of milling, inspection equipment must be frequently in normal operation, and the feeding roller wet rubber and rubber block in time of cleaning, prevent the closing. After feeding is stopped, all devices need to continue to work, after discharging iron to elimination no longer runs again for 3 minutes. Then sequentially close the abrasive machine, air mill, the mill a few ring to the loosening direction, release handle, and then sequentially close the draught fan, control button bag-type dust remover, high-pressure gas valve, vibrating screen, iron remover. (3) mixing of finished product The powder is poured into the adhesive in the mixing tank according to the number, start the mixer stirring 15 minutes, mixed evenly. (4) packaging Tying it is necessary to firmly, sealing to be flat, not leaky-line, each bag of rubber the error is ± 45g, when the material temperature is relatively high, as required or after being cooled. The particle size of the regular checks the compliance of the rubber, with the bag approves the bag and ensure the consistency of the granularity between. The sample, taking in from each bag to 10g, then good tie stir the sample bag, prohibit the use of magnet detection sample. Specific Embodiment 2:a sodium alginate preparation method, the kelp as raw materials, the preparation steps are as follows: 1, kelp pre-treatment (1) kelp sop, fixation kelp quantity in soaking in the pool to 1.5 times that of the tap water, and adding kelp quantity 12% formaldehyde solution, and then the kelp uniform pitch in the soaking tank, soaking 16 ± 0.5 hours, when the formaldehyde solution is kelp absorption after all, then adding tap water to the kelp the above, the soak time is 21 hours. (2) cutting After the dipping time of the, the fixation water discharge, vegetable cutting machine the kelp to cutting, shredding of the kelp by washing with hot water is pumped into the digestion of winch in the boiler. 2, digestion Kelp in the pot is pumped into the digestion temperature control in the 57 [...] , topping-up to 16 times hot water, and to dry kelp quantitysoda ash quantity 30%, of the dry formaldehyde quantitykelp quantity with 6%. Digestion is divided into three levels of digestion, kelp in the 1st stage digestion stuffy pot in the pot 110 minutes, stirring 40 minutes, then enter the 1st stage refiner ground, milled in the 2nd stage digestion after stuffy pot in the pot 80 minutes, stirring 40 minutes into the 2nd stage refiner ground, milled in the 3rd stage digestion pot after digestion, not Digest to Digest the kelp recycling. (1) flushing dilute A. Start stirring, opening flushes the net water valve, so that the glue pot auger into the flushing pool, the filter residue is retracted into the recovery digestion pot, is added at the same time 40 mesh filtering flushes the net water or diluted by the running water, for kelp of flushes the thin quantity 130 times. B. At the same time of flushes thinly , opening compressor, the compressed air is used to stir flushes the thin fluid , flushes the thin fluid the flow of the 100 seconds. C. After recovering the residue, by adding pure alkali, open steam heating digestion, then filtering, flushes thinly , drain residue. (2) coarse Dilute the flushing solution, for coarse filtration, first open the 6 mesh filter, flushes the net water valve is opened, opening glue solution pump ., glue flow regulated at the same time, make the glue solution smoothly pass through the 6 mesh, the overflowing glue, enters the liquid cement pondafter filtering, liquid cement , flushes the net water recovery. (3) foaming floating A. Preparation of a flocculating agent The flocculating agent has, firstly adding 100 times of water to in the dissolving tank, then adding flocculant glacial acetic acid of the weight of the same, to stir, then adding flocculant, dynamic and static combination of the fully dissolved, 6 ± 0.5 hours to dissolve completely. Good flocculating agent of the dissolved through the 18 mesh in mesh bag filter into the diluted pool, adding 10 times of water flushing dilute, into the metering tank spare. B. Foaming Start foaming machine, to the normal operation, the liquid is pumped into the foaming machine. After the glue solution pump. started, immediately open the adjusting flocculating agent adding valve, the foaming the foam entering along with liquid cement , attention to the air intake should be avoided as far as possible. Foaming is completed, close the flocculating agent adding valve, and then stop the glue solution pump. operation. C. Float The foamed liquid will be injected into the floating pond, a floating pond filled with time, the interruption because of 5 minutes shall not be re-injected into the original pool. The floating tank filled with liquid, static 3 hours, after clarifying treats the liquid cement , open the liquid valve, close the recovery valve, desorbing supernatant fluid, then the recovered liquid is put into the recovery tank, the recovered liquid re- flushes thinly , centrifugal foaming, floating, clear liquid into the liquid storage tank. (4) filtering Opening flat filter, the floating of the antifreezing in turn also through the upper layer of 120 mesh, the lower layer 260 mesh filtration, filtrate enters the accumulator tank , flushes the net water recovery. In the filtration process, the inlet valve be regulated at any time, the quality of the glue solution is ensured for controlling the flow speed, and should at any time inspect the filter operating condition, such as discovery the mesh runs , crushing should immediately stop the vehicle for repair. 3, calcified, decalcifing (1) calcium Opening calcified tank stirrer, simultaneously inject content of 9.5% calcium chloride solution of the of the precipitation, starting glue solution pump ., control calcium water flow, and regulating Cl2 added in the amount of, and then sequentially starting material raking devices which, disintegrator, transforming the good calcium alginate into decalcitied process. Adjusting pressure sodium and calcium chloride solution, the calcium-containing water waste calcium the 0.6 [...] , the content the 0.42 [...] , 6.8 PH value, the pressure in the buffer tank to the attention of the chlorine 0.2 MPa, flow meter shall not enters the liquid cement. The calcification, to close the outlet on the, longer off chlorine buffer outlet valve, and then sequentially stops the clear rubber liquid pump , calcified stirrer, material raking devices which, pulverizer. (2) decalcifing Sequentially starting a, secondary the decalcify stirs the cage (80 mesh) and a, secondary decalcifing stirrer and three-stage water washing cage, will be translated is good calcium alginate decalcify pot into a time, adding secondary decalcifing waste acid water, the draining after a decalcifing mixing cage enters the secondary decalcify pot , then adding content 1.5% dilute hydrochloric acid, hydrochloric acid added amount of adjustment, by the secondary decalcifing auger enter the washing tank after dehydration, cages for draining evacuation dehydration section. After washing for preparing recovering waste acid water hydrochloric acid, a decalcifing waste acidwater to calcified. Finally, stop all sequentially cages and decalcifing stirrer. 4, dehydration (1) the decalcifing of the alginic acid is injected in a stage screw press of the storage case, of materials to the material storage box 2/3 time, starting screw press, and timely adjust the gate to keep the material of the storage case. (2) adjusting the rotational speed of the press, so that the charging/discharging balance and as far as possible to reduce the press water. (3) the level of the spiral of the alginic acid block into the two-stage screw press for secondary dewatering. (4) secondary dehydrating acid block requires moisture content of 67%, failing to meet requirements, need to press, until the meet the requirements. 5, neutralization, drying (1) and transformed in Crushed according to each bag alginate 20 kg bag, into the liquid phase conversion process. matches the scale to the alcohol 67° 80 kg, caustic soda 20 kg by adding conversion tank, starting stirring, then inputs alginic acid 80 kg. Continually testing PH value, at the same time slowly adding caustic soda, when the to the neutral or photon, by adding sodium hypochlorite bleach, 5 minutes, to continue adding caustic soda solution. When the value is stable PH 9 ± 0.5 time, stop stirring (the entire mixing process 27 minutes), the transform of the good into the centrifuge. Discharging centrifugal front, the mesh bag in a centrifugal machine paving the whole is good, puts the material booth to be even , the rotating centrifuge is started by hand, the centrifugal the aqueous rubber 45%. Centrifugal is completed, self-deceleration required parking, shall not mechanical brake. After stopping, the rubber block crushing air sent to the drying process, the water in the mixing tank, make moisture content up to 54%, and then granulating and drying. (2) evaporation recovery After centrifugal after waste alcohol recovery pool, adding hydrochloric acid and stir, the value control PH 5.8. Checking alcohol tower to condense water system, a tap water inlet recovery valve and open. Opening alcohol the tower enters steam valve, to ethyl alcohol tower heating, when temperature is raised to the bottom of the tower the 107 when [...] , the column temperature is raised to 97 the feeding pump is started [...] , the feed liquid is fed into a distillation tower, the charging rate is adjusted, opened after the feeding waste liquid valve. takes when the liquor required according to the degree of, alcohol measure the degree of the reflux that do not meet the requirements, qualified into the recovered alcohol storage tank off return valve. According to the bottom of the tower, tower temperature regulating inlet pressure, secondary condenser temperature control in the 28 [...]. Waste liquid xie Pai alcohol content is 0.06%. After the work is finished, the valve is closed according to the requirements of the distillation column. 6, mixed Elevator for lifting the material to the mixer platform, will each batch of 2 tons of quantity is poured into the mixer, mixing 17 minutes, sampling and testing proper, crushing the qualified, if the non-qualified need to be re-mixed. 7, milling (1) feeding Closing the power supply main switch a hoister is used by the material in the material storage box into the vibrating screen, vibrating screen shall not be shut down when in use, the screen must be to stop the processing of the material in the rear can be stopped police officers, against external impurities into the, non-qualified material is not allowed in the storage box input. (2) milling Sequentially starting mill, an induced draft fan, control button bag-type dust remover, and open the high pressure gas valve, vibrating screen, in addition to iron, the airlock. After the starting up, carefully inspect the electrical equipment in the no-load operation, no abnormal circumstances the confirmation, can be feeding crushing. From the feeding port feeding is started, the feeding speed by feed inlet gate control, but cannot exceed the limit of the apparatus allow the wind delivers the quantity (550 kilograms/hour). Feeding the rear, first adjusts the roll grips distance, enables the grinder roll of wrapping the mutual distance between both sides can not be offset, or tie distance too tight, the rubber powder temperature is 65 the [...] , 6-10 month shall not exceed the 70 [...]. In the process of milling, inspection equipment must be frequently in normal operation, and the feeding roller wet rubber and rubber block in time of cleaning, prevent the closing. After feeding is stopped, all devices need to continue to work, no longer iron to elimination runs again after discharging 3.6 minutes. Then sequentially close the abrasive machine, air mill, the mill a few ring to the loosening direction, release handle, and then sequentially close the draught fan, control button bag-type dust remover, high-pressure gas valve, vibrating screen, iron remover. (3) mixing of finished product According to the batch of the powder is poured into the mixing tank, the stirring mixer 17 minutes, mixed evenly. (4) packaging Tying it is necessary to firmly, sealing to be flat, not leaky-line, each bag of rubber the error is ± 50g, when the material temperature is relatively high, as required or after being cooled. The particle size of the regular checks the compliance of the rubber, with the bag approves the bag and ensure the consistency of the granularity between. The sample, taking in from each bag to 13g, then good tie stir the sample bag, prohibit the use of magnet detection sample. Specific Embodiment 3:a sodium alginate preparation method, the kelp as raw materials, the preparation steps are as follows: 1, kelp pre-treatment (1) kelp sop, fixation kelp quantity in soaking in the pool to 2.5 times that of the tap water, and adding kelp quantity 14% formaldehyde solution, and then the kelp uniform pitch in the soaking tank, soaking 16 ± 0.5 hours, when the formaldehyde solution is kelp absorption after all, then adding tap water to the kelp the above, the soak time is 23 hours. (2) cutting After the dipping time of the, the fixation water discharge, vegetable cutting machine the kelp to cutting, shredding of the kelp by washing with hot water is pumped into the digestion of winch in the boiler. 2, digestion Kelp in the pot is pumped into the digestion temperature control in the 65 [...] , topping-up to 17 times hot water, and to dry kelp quantitysoda ash quantity 35%, of the dry formaldehyde quantitykelp quantity with 7%. Digestion is divided into three levels of digestion, kelp in the 1st stage digestion stuffy pot in the pot 130 minutes, stirring 50 minutes, then enter the 1st stage refiner ground, milled in the 2nd stage digestion after stuffy pot in the pot 100 minutes, stirring 50 minutes into the 2nd stage refiner ground, milled in the 3rd stage digestion pot after digestion, not Digest to Digest the kelp recycling. (1) flushing dilute A. Start stirring, opening flushes the net water valve, so that the glue pot auger into the flushing pool, the filter residue is retracted into the recovery digestion pot, is added at the same time 40 mesh filtering flushes the net water or diluted by the running water, for kelp of flushes the thin quantity 160 times. B. At the same time of flushes thinly , opening compressor, the compressed air is used to stir flushes the thin fluid , flushes the thin fluid the flow to 110 seconds. C. After recovering the residue, by adding pure alkali, open steam heating digestion, then filtering, flushes thinly , drain residue. (2) coarse Dilute the flushing solution, for coarse filtration, first open the 6 mesh filter, flushes the net water valve is opened, opening glue solution pump ., glue flow regulated at the same time, make the glue solution smoothly pass through the 6 mesh, the overflowing glue, enters the liquid cement pondafter filtering, liquid cement , flushes the net water recovery. (3) foaming floating A. Preparation of a flocculating agent The flocculating agent has, firstly adding 100 times of water to in the dissolving tank, then adding flocculant glacial acetic acid of the weight of the same, to stir, then adding flocculant, dynamic and static combination of the fully dissolved, 6 ± 0.5 hours to dissolve completely. Good flocculating agent of the dissolved through the 18 mesh in mesh bag filter into the diluted pool, adding 10 times of water flushing dilute, into the metering tank spare. B. Foaming Start foaming machine, to the normal operation, the liquid is pumped into the foaming machine. After the glue solution pump. started, immediately open the adjusting flocculating agent adding valve, the foaming the foam entering along with liquid cement , attention to the air intake should be avoided as far as possible. Foaming is completed, close the flocculating agent adding valve, and then stop the glue solution pump. operation. C. Float The foamed liquid will be injected into the floating pond, a floating pond filled with time, the interruption because of 5 minutes shall not be re-injected into the original pool. The floating tank filled with liquid, static 3.6 hours, after clarifying treats the liquid cement , open the liquid valve, close the recovery valve, desorbing supernatant fluid, then the recovered liquid is put into the recovery tank, the recovered liquid re- flushes thinly , centrifugal foaming, floating, clear liquid into the liquid storage tank. (4) filtering Opening flat filter, the floating of the antifreezing in turn also through the upper layer of 120 mesh, the lower layer 200 mesh filtration, filtrate enters the accumulator tank , flushes the net water recovery. In the filtration process, the inlet valve be regulated at any time, the quality of the glue solution is ensured for controlling the flow speed, and should at any time inspect the filter operating condition, such as discovery the mesh runs , crushing should immediately stop the vehicle for repair. 3, calcified, decalcifing (1) calcium Opening calcified tank stirrer, simultaneously inject content of 10.5% calcium chloride solution of the of the precipitation, starting glue solution pump ., control calcium water flow, and regulating Cl2 added in the amount of, and then sequentially starting material raking devices which, disintegrator, transforming the good calcium alginate into decalcitied process. Adjusting pressure sodium and calcium chloride solution, the calcium-containing water waste calcium the 0.7 [...] , the glue the 0.47 [...] , PH value 7.2, the pressure in the buffer tank to the attention of the chlorine 0.16 MPa, flow meter shall not enters the liquid cement. The calcification, to close the outlet on the, longer off chlorine buffer outlet valve, and then sequentially stops the clear rubber liquid pump , calcified stirrer, material raking devices which, pulverizer. (2) decalcifing Sequentially starting a, secondary the decalcify stirs the cage (80 mesh) and a, secondary decalcifing stirrer and three-stage water washing cage, will be translated is good calcium alginate decalcify pot into a time, adding secondary decalcifing waste acid water, the draining after a decalcifing mixing cage enters the secondary decalcify pot , then adding content 1.8% dilute hydrochloric acid, hydrochloric acid added amount of adjustment, by the secondary decalcifing auger enter the washing tank after dehydration, cages for draining evacuation dehydration section. After washing for preparing recovering waste acid water hydrochloric acid, a decalcifing waste acidwater to calcified. Finally, stop all sequentially cages and decalcifing stirrer. 4, dehydration (1) the decalcifing of the alginic acid is injected in a stage screw press of the storage case, of materials to the material storage box 2/3 time, starting screw press, and timely adjust the gate to keep the material of the storage case. (2) adjusting the rotational speed of the press, so that the charging/discharging balance and as far as possible to reduce the press water. (3) the level of the spiral of the alginic acid block into the two-stage screw press for secondary dewatering. (4) secondary dehydrating acid block requires moisture content of 69%, failing to meet requirements, need to press, until the meet the requirements. 5, neutralization, drying (1) and transformed in Crushed according to each bag alginate 20 kg bag, into the liquid phase conversion process. matches the scale to the alcohol 69° 80 kg, caustic soda 20 kg by adding conversion tank, starting stirring, then inputs alginic acid 80 kg. Continually testing PH value, at the same time slowly adding caustic soda, when the to the neutral or photon, by adding sodium hypochlorite bleach, 5 minutes, to continue adding caustic soda solution. When the value is stable PH 9 ± 0.5 time, stop stirring (the entire mixing process 35 minutes), the transform of the good into the centrifuge. Discharging centrifugal front, the mesh bag in a centrifugal machine paving the whole is good, puts the material booth to be even , the rotating centrifuge is started by hand, after centrifugation for aqueous rubber blocks 46%. Centrifugal is completed, self-deceleration required parking, shall not mechanical brake. After stopping, the rubber block crushing air sent to the drying process, the water in the mixing tank, the moisture content reach 52%, then granulating and drying. (2) evaporation recovery After centrifugal after waste alcohol recovery pool, adding hydrochloric acid and stir, the value control PH 6.2. Checking alcohol tower to condense water system, a tap water inlet recovery valve and open. Opening alcohol the tower enters steam valve, to ethyl alcohol tower govind, when the tower bottom temperature is raised to 110 the when [...] , the column temperature is raised to 97.5 the feeding pump is started [...] , the feed liquid is fed into a distillation tower, the charging rate is adjusted, opened after the feeding waste liquid valve. takes when the liquor required according to the degree of, alcohol measure the degree of the reflux that do not meet the requirements, qualified into the recovered alcohol storage tank off return valve. According to the bottom of the tower, tower temperature regulating inlet pressure, secondary condenser temperature control in the 28 [...]. Waste liquid xie Pai alcohol content is 0.05%. After the work is finished, the valve is closed according to the requirements of the distillation column. 6, mixed Elevator for lifting the material to the mixer platform, will each batch of 2 tons of quantity is poured into the mixer, mixing 19 minutes, sampling and testing proper, crushing the qualified, if the non-qualified need to be re-mixed. 7, milling (1) feeding Closing the power supply main switch a hoister is used by the material in the material storage box into the vibrating screen, vibrating screen shall not be shut down when in use, the screen must be to stop the processing of the material in the rear can be stopped police officers, against external impurities into the, non-qualified material is not allowed in the storage box input. (2) milling Sequentially starting mill, an induced draft fan, control button bag-type dust remover, and open the high pressure gas valve, vibrating screen, in addition to iron, the airlock. After the starting up, carefully inspect the electrical equipment in the no-load operation, no abnormal circumstances the confirmation, can be feeding crushing. From the feeding port feeding is started, the feeding speed by feed inlet gate control, but cannot exceed the limit of the apparatus allow the wind delivers the quantity (550 kilograms/hour). Feeding the rear, first adjusts the roll grips distance, enables the grinder roll of wrapping the mutual distance between both sides can not be offset, or tie distance too tight, the rubber powder temperature of the 55 [...] , 6-10 month shall not exceed the 70 [...]. In the process of milling, inspection equipment must be frequently in normal operation, and the feeding roller wet rubber and rubber block in time of cleaning, prevent the closing. After feeding is stopped, all devices need to continue to work, no longer iron to elimination runs again after discharging 4.5 minutes. Then sequentially close the abrasive machine, air mill, the mill a few ring to the loosening direction, release handle, and then sequentially close the draught fan, control button bag-type dust remover, high-pressure gas valve, vibrating screen, iron remover. (3) mixing of finished product According to the batch of the powder is poured into the mixing tank, the stirring mixer 19 minutes, mixed evenly. (4) packaging Tying it is necessary to firmly, sealing to be flat, not leaky-line, each bag of rubber the error is ± 45g, when the material temperature is relatively high, as required or after being cooled. The particle size of the regular checks the compliance of the rubber, with the bag approves the bag and ensure the consistency of the granularity between. The sample, taking in from each bag to 18g, then good tie stir the sample bag, prohibit the use of magnet detection sample. Specific Embodiment 4:a sodium alginate preparation method, the kelp as raw materials, the preparation steps are as follows: 1, kelp pre-treatment (1) kelp sop, fixation Adding kelp quantity in soaking in the pool 3 times that of the tap water, and adding kelp quantity 15% formaldehyde solution, and then the kelp uniform pitch in the soaking tank, soaking 16 ± 0.5 hours, when the formaldehyde solution is kelp absorption after all, then adding tap water to the kelp the above, the soak time is 24 hours. (2) cutting After the dipping time of the, the fixation water discharge, vegetable cutting machine the kelp to cutting, shredding of the kelp by washing with hot water is pumped into the digestion of winch in the boiler. 2, digestion Kelp in the pot is pumped into the digestion temperature control in the 70 [...] , topping-up to 18 times hot water, and to dry kelp quantitysoda ash quantity 40%, of the dry formaldehyde quantitykelp quantity with 8%. Digestion is divided into three levels of digestion, kelp in the 1st stage digestion stuffy pot in the pot 150 minutes, stirring 60 minutes, then enter the 1st stage refiner ground, milled in the 2nd stage digestion after stuffy pot in the pot 120 minutes, stirring 60 minutes after the level entering the 2nd refiner ground, milled in the 3rd stage digestion pot after digestion, not Digest to Digest the kelp recycling. (1) flushing dilute A. Start stirring, opening flushes the net water valve, so that the glue pot auger into the flushing pool, the filter residue is retracted into the recovery digestion pot, is added at the same time 40 mesh filtering flushes the net water or diluted by the running water, for kelp of flushes the thin quantity 180 times. B. At the same time of flushes thinly , opening compressor, the compressed air is used to stir flushes the thin fluid , flushes the thin fluid the flow the 120 seconds. C. After recovering the residue, by adding pure alkali, open steam heating digestion, then filtering, flushes thinly , drain residue. (2) coarse Dilute the flushing solution, for coarse filtration, first open the 6 mesh filter, flushes the net water valve is opened, opening glue solution pump ., glue flow regulated at the same time, make the glue solution smoothly pass through the 6 mesh, the overflowing glue, enters the liquid cement pondafter filtering, liquid cement , flushes the net water recovery. (3) foaming floating A. Preparation of a flocculating agent The flocculating agent has, firstly adding 100 times of water to in the dissolving tank, then adding flocculant glacial acetic acid of the weight of the same, to stir, then adding flocculant, dynamic and static combination of the fully dissolved, 6 ± 0.5 hours to dissolve completely. Good flocculating agent of the dissolved through the 18 mesh in mesh bag filter into the diluted pool, adding 10 times of water flushing dilute, into the metering tank spare. B. Foaming Start foaming machine, to the normal operation, the liquid is pumped into the foaming machine. After the glue solution pump. started, immediately open the adjusting flocculating agent adding valve, the foaming the foam entering along with liquid cement , attention to the air intake should be avoided as far as possible. Foaming is completed, close the flocculating agent adding valve, and then stop the glue solution pump. operation. C. Float The foamed liquid will be injected into the floating pond, a floating pond filled with time, the interruption because of 5 minutes shall not be re-injected into the original pool. The floating tank filled with liquid, static 4 hours, after clarifying treats the liquid cement , open the liquid valve, close the recovery valve, desorbing supernatant fluid, then the recovered liquid is put into the recovery tank, the recovered liquid re- flushes thinly , centrifugal foaming, floating, clear liquid into the liquid storage tank. (4) filtering Opening flat filter, the floating of the antifreezing in turn also through the upper layer of 120 mesh, the lower layer 260 mesh filtration, filtrate enters the accumulator tank , flushes the net water recovery. In the filtration process, the inlet valve be regulated at any time, the quality of the glue solution is ensured for controlling the flow speed, and should at any time inspect the filter operating condition, such as discovery the mesh runs , crushing should immediately stop the vehicle for repair. 3, calcified, decalcifing (1) calcium Opening calcified tank stirrer, into the content is 11% of the precipitate of calcium chloride solution, starting glue solution pump ., control calcium water flow, and regulating Cl2 added in the amount of, and then sequentially starting material raking devices which, disintegrator, transforming the good calcium alginate into decalcitied process. Adjusting pressure sodium and calcium chloride solution, the calcium-containing water waste calcium the 0.8 [...] , content the 0.45 [...] , 7.5 PH value, the pressure in the buffer tank to the attention of the chlorine 0.15 MPa, flow meter shall not enters the liquid cement. The calcification, to close the outlet on the, longer off chlorine buffer outlet valve, and then sequentially stops the clear rubber liquid pump , calcified stirrer, material raking devices which, pulverizer. (2) decalcifing Sequentially starting a, secondary the decalcify stirs the cage (80 mesh) and a, secondary decalcifing stirrer and three-stage water washing cage, will be translated is good calcium alginate decalcify pot into a time, adding secondary decalcifing waste acid water, the draining after a decalcifing mixing cage enters the secondary decalcify pot , then adding content 2% dilute hydrochloric acid, hydrochloric acid added amount of adjustment, by the secondary decalcifing auger enter the washing tank after dehydration, cages for draining evacuation dehydration section. After washing for preparing recovering waste acid water hydrochloric acid, a decalcifing waste acidwater to calcified. Finally, stop all sequentially cages and decalcifing stirrer. 4, dehydration (1) the decalcifing of the alginic acid is injected in a stage screw press of the storage case, of materials to the material storage box 2/3 time, starting screw press, and timely adjust the gate to keep the material of the storage case. (2) adjusting the rotational speed of the press, so that the charging/discharging balance and as far as possible to reduce the press water. (3) the level of the spiral of the alginic acid block into the two-stage screw press for secondary dewatering. (4) secondary dehydrating acid block requires moisture content of 72%, failing to meet requirements, need to press, until the meet the requirements. 5, neutralization, drying (1) and transformed in Crushed according to each bag alginate 20 kg bag, into the liquid phase conversion process. matches the scale to the alcohol 70° 80 kg, caustic soda 20 kg by adding conversion tank, starting stirring, then inputs alginic acid 80 kg. Continually testing PH value, at the same time slowly adding caustic soda, when the to the neutral or photon, by adding sodium hypochlorite bleach, 5 minutes, to continue adding caustic soda solution. When the value is stable PH 9 ± 0.5 time, stop stirring (the entire mixing process 40 minutes), the transform of the good into the centrifuge. Discharging centrifugal front, the mesh bag in a centrifugal machine paving the whole is good, puts the material booth to be even , the rotating centrifuge is started by hand, after centrifugation for aqueous rubber 45%. Centrifugal is completed, self-deceleration required parking, shall not mechanical brake. After stopping, the rubber block crushing air sent to the drying process, the water in the mixing tank, to the water content to 50%, then granulating and drying. (2) evaporation recovery After centrifugal after waste alcohol recovery pool, adding hydrochloric acid and stir, the value control PH 6.5. Checking alcohol tower to condense water system, a tap water inlet recovery valve and open. Opening alcohol the tower enters steam valve, to ethyl alcohol tower heating, when temperature is raised to the bottom of the tower the 114 when [...] , the column temperature is raised to 97 the feeding pump is started [...] , the feed liquid is fed into a distillation tower, the charging rate is adjusted, opened after the feeding waste liquid valve. takes when the liquor required according to the degree of, alcohol measure the degree of the reflux that do not meet the requirements, qualified into the recovered alcohol storage tank off return valve. According to the bottom of the tower, tower temperature regulating inlet pressure, secondary condenser temperature control in the 25 [...]. Waste liquid xie Pai alcohol content is 0.05%. After the work is finished, the valve is closed according to the requirements of the distillation column. 6, mixed Elevator for lifting the material to the mixer platform, will each batch of 2 tons of quantity is poured into the mixer, mixing 20 minutes, sampling and testing proper, crushing the qualified, if the non-qualified need to be re-mixed. 7, milling (1) feeding Closing the power supply main switch a hoister is used by the material in the material storage box into the vibrating screen, vibrating screen shall not be shut down when in use, the screen must be to stop the processing of the material in the rear can be stopped police officers, against external impurities into the, non-qualified material is not allowed in the storage box input. (2) milling Sequentially starting mill, an induced draft fan, control button bag-type dust remover, and open the high pressure gas valve, vibrating screen, in addition to iron, the airlock. After the starting up, carefully inspect the electrical equipment in the no-load operation, no abnormal circumstances the confirmation, can be feeding crushing. From the feeding port feeding is started, the feeding speed by feed inlet gate control, but cannot exceed the limit of the apparatus allow the wind delivers the quantity (550 kilograms/hour). Feeding the rear, first adjusts the roll grips distance, enables the grinder roll of wrapping the mutual distance between both sides can not be offset, or tie distance too tight, the rubber powder temperature of the 60 [...] , 6-10 month shall not exceed the 70 [...]. In the process of milling, inspection equipment must be frequently in normal operation, and the feeding roller wet rubber and rubber block in time of cleaning, prevent the closing. After feeding is stopped, all devices need to continue to work, no longer iron to elimination runs again after discharging 5 minutes. Then sequentially close the abrasive machine, air mill, the mill a few ring to the loosening direction, release handle, and then sequentially close the draught fan, control button bag-type dust remover, high-pressure gas valve, vibrating screen, iron remover. (3) mixing of finished product The powder is poured into the adhesive in the mixing tank according to the number, start the mixer stirring 20 minutes, mixed evenly. (4) packaging Tying it is necessary to firmly, sealing to be flat, not leaky-line, each bag of rubber the error is ± 50g, when the material temperature is relatively high, as required or after being cooled. The particle size of the regular checks the compliance of the rubber, with the bag approves the bag and ensure the consistency of the granularity between. The sample, taking in from each bag to 20g, then good tie stir the sample bag, prohibit the use of magnet detection sample. The invention relates to a method for preparing sodium alginate from kelp, which adopts kelp as a raw material. The preparation process of the method comprises raw-material pretreatment, digestion, calcification, decalcification, dehydration, neutralization, drying, blending and milled-powder packaging, wherein flocculant is adopted for foamed floating during digestion. As the kelp is one of plants growing fastest in the world, the kelp can be cultured on a large scale in continental-shelf sea areas, and leaves of ripe kelp concentrating on the surface of seawater are beneficial to harvesting, so that production cost is reduced. The method also adopts the flocculant for foamed floating, thereby having the advantages of shortening floating time and improving product quality. 1. The kelp preparation ALG method, characterized in that the kelp as raw materials, the steps are as follows: A, pre-processing of raw materials (1) kelp sop, fixation Adding in the pool of soaking the kelp quantity 1-3 times of the tap water, and adding kelp quantity 10-15% formaldehyde solution, and then the kelp uniform pitch in the soaking tank, soaking 16 ± 0.5 hours, when the formaldehyde solution is kelp absorption after all, then adding tap water to the kelp the above, the soak time is 20-24 hours; (2) cutting After the soaking time when reaching, vegetable cutting machine the kelp to cutting; B, digestion The kelp of the back of the cage after the water in the pan is pumped into the digestion, control temperature, fill the hot water, by adding soda and formaldehyde, then three-stage digestion; (1) flushing dilute Glue pot so that the rough flushes the thin pond auger, the filter residue is retracted into the recovery digestion pot, at the same time adding flushes the net water or diluted by the running water; after recovering the residue, by adding pure alkali and govind digestion, then filtering, flushing dilute; (2) coarse Dilute the flushing solution, through a 6 mesh coarse filter, is rough liquid cement pondlatter liquid cement ; (3) foaming floating A. Preparation flocculating agent B. Foaming The glue solution is pumped into the foaming machine, at the same time adding flocculant, along with liquid cement enter into the foaming a foaming machine; C. Float The foamed liquid will be injected into the floating pond standstill, after clarifying treats the liquid cement , desorbing supernatant, the supernatant fluid is put into the liquid storage tank; (4) filtering Through the flat filter, antifreezing of the float after filtering, the filtrate is put into the storage tank after the fine; C, calcified, decalcifing (1) calcium Calcium chloride solution is injected in the solution, then adding Cl2, to calcification of the gum; (2) decalcifing The calcification, transforming the good decalcification calcium alginate; transforming the good time into a calcium alginate decalcify pot , adding secondary decalcifing waste acid water, the draining after a decalcifing mixing cage enters the secondary decalcify pot , then adding dilute hydrochloric acid, the secondary decalcifing auger enter the washing tank after dehydration; D, dehydration The decalcifing of the alginic acid is injected in a stage screw press of the storage case, of materials to the material storage box 2/3 time, carrying out a dehydration; after dehydration of the block to the alginate of the secondary screw press for secondary dewatering; E, neutralization, drying (1) and transformed in In the conversion of a tank by adding alcohol and caustic soda, then inputs alginic acid; test PH value, at the same time adding caustic soda, when the to the neutral or photon, by adding sodium hypochlorite bleach, 5 minutes, continue to add caustic soda solution; when the value is stable PH 9 ± 0.5 time, the rubber block will be translated into the centrifugal machine is centrifugal; the rubber after centrifugal wind is sent to the drying process and, then granulating and drying; (2) evaporation recovery Recovery after centrifugal waste alcohol, after the completion of the recovery tank, adding hydrochloric acid, control PH value, the condensed water tower through the alcohol to the alcohol recovery system; F, the material after drying the mixed glue; G, milling (1) after compounding the material of the glue; (2) milling The feeding from the inlet orifice, through the orifice plate to control the charging, after the feeding, the material by the grinding roll milling glue; (3) mixing of finished product The glue is poured into the powder in the mixing tank, uniformly mixed; (4) the mixing of rubber powder after packaging. 2. The kelp preparation ALG method according to Claim 1, characterized in that steps B in said temperature control in the 50-70 between [...] , hot water topping-up to 15-18 times, and it is the dry soda ash quantity of kelp quantity 25-40%, plus formaldehyde quantity is dry the kelp quantity 5-8%. 3. The kelp preparation ALG method according to Claim 1, characterized in that steps B of the three levels in the digestion as kelp in the 1st stage digestion stuffy pot in the pot, stirring, then enter the 1st stage refiner ground, milled in the 2nd stage digestion after stuffy pot in the pot, mixing into the 2nd stage refiner ground, milled in the 3rd stage digestion pot after digestion. 4. The kelp preparation ALG method according to Claim 1, characterized in that the foaming B floating in the steps of the flocculating agent is formulated such, the flocculating agent has, in the dissolving tank, the water is added into the first, then adding flocculant glacial acetic acid of the weight of the same, to stir, then adding flocculant, is fully dissolved; good flocculating agent of the dissolved into the dilution in the pool after filtering, add water for flushes thinly , and then into the metering tank. 5. The kelp preparation ALG method according to Claim 1, characterized in that the evaporation of the steps in E PH value to control in the recovery of the 5.5-6.5 between. 6. The kelp preparation ALG method according to Claim 1, characterized in that steps the F is such that the compounding of, lifter for lifting the material of the platform to the mixer, the rubber is poured into the mixer, mixing 15-20 minutes, after proper, to be crushed. 7. The kelp preparation ALG method according to Claim 3, characterized in that the 1st stage digestion time for storing in the pot 90-150 minutes, the stirring time is 30-60 minutes; the 2nd stage digestion time for storing in the pot 60-120 minutes, the stirring time is 30-60 minutes.