CN215593486U - Straw slurrying system of processing - Google Patents
Straw slurrying system of processing Download PDFInfo
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- CN215593486U CN215593486U CN202122079610.3U CN202122079610U CN215593486U CN 215593486 U CN215593486 U CN 215593486U CN 202122079610 U CN202122079610 U CN 202122079610U CN 215593486 U CN215593486 U CN 215593486U
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Abstract
A straw pulping and processing system relates to a pulping and processing system. Aims to solve the problems of environmental pollution and large chemical agent amount caused by the existing straw pulping. The system consists of straw processing equipment, pulping equipment and sewage treatment equipment; the straw processing equipment comprises a bale breaker, a No. 1 cleaning machine, a chain rake type conveyor, a pre-crusher, a straw filament-kneading machine, a No. 2 cleaning machine, a wind power conveying system, a quantitative discharging storage bin and a dust removing system; the pulping equipment comprises a stirring tank, a feeding auger, a 1# dry-wet separator, a 1# pulp tank, a 1# pulp pump, a pulp grinder, a 2# pulp tank, a 2# pulp pump, a 2# dry-wet separator, a 3# pulp tank, a 3# pulp pump and a pulp storage tank; the sewage treatment equipment comprises a black liquor pool, a PAC storage tank, a PAM storage tank, a flocculation tank, a sludge pool and a clean water pool; the straw processing equipment, the pulping equipment, the sewage treatment equipment and the sewage reuse process are mutually supported, the pulp yield is high, and the sewage is not discharged.
Description
Technical Field
The utility model relates to a straw pulping processing system.
Background
At present, straw utilization in China is fully developed, although straw pulping and papermaking are developed for many years, no special equipment is provided in the processing process, the existing equipment is replaced, the production process is still in a research and development stage, the produced straw pulp is raw pulp, brooming is not good, independent papermaking can not be realized, the straw pulp can only be used as an additive, and production is still in a research and development stage, so that mass production cannot be realized, a plurality of chemical reagents are added, the temperature of a production link is high, and the production cost is high; and the generated sewage is electrodeless and easy to cause serious environmental pollution.
SUMMERY OF THE UTILITY MODEL
The utility model provides a straw pulping processing system for solving the problems of environmental pollution and large chemical agent dosage caused by the existing straw pulping.
The straw pulping and processing system consists of straw processing and processing equipment, pulping equipment and sewage treatment equipment;
the straw processing equipment consists of a bale breaker, a No. 1 cleaning machine, a chain rake type conveyor, a pre-crusher, a straw filament rubbing machine, a No. 2 cleaning machine, a wind power conveying system, a quantitative discharging storage bin and a dust removing system which are sequentially connected end to end;
the pulping equipment consists of a stirring tank, a feeding auger, a 1# dry-wet separator, a 1# pulp tank, a 1# pulp pump, a pulping machine, a 2# pulp tank, a 2# pulp pump, a 2# dry-wet separator, a 3# pulp tank, a 3# pulp pump and a pulp storage tank which are sequentially connected end to end; a No. 1 stirrer is arranged in the No. 1 slurry tank, a No. 2 stirrer is arranged in the No. 2 slurry tank, and a No. 3 stirrer is arranged in the No. 3 slurry tank;
the stirring tank comprises a base, a tank body and a material conveying auger, wherein the tank body is arranged on the base, and the material conveying auger is arranged in the tank body; a plurality of axially arranged guide plates are arranged on the inner wall of the middle part of the tank body, the guide plates are arranged in an annular array, a left-handed helical blade is arranged on the inner wall of the feeding side of the tank body, a right-handed helical blade is arranged on the inner wall of the discharging side of the tank body, and a heat insulation layer is arranged on the outer wall of the tank body;
two ends of the material conveying auger extend out of two ends of the tank body respectively, a feeding helical blade and a discharging helical blade are arranged in an auger shell of the material conveying auger, the feeding helical blade and the discharging helical blade are arranged on a driving shaft, the feeding helical blade is arranged on the feeding side of the tank body, the discharging helical blade is arranged on the feeding side of the tank body, and a blanking port is formed in the lower part of the auger shell between the feeding helical blade and the discharging helical blade; the upper part of the auger shell corresponding to the discharging helical blade is open;
the sewage treatment equipment consists of a black liquor tank, a PAC (programmable automation controller) storage tank, a PAM (polyacrylamide) storage tank, a flocculation tank, a sludge tank and a clean water tank; the discharge port of the black liquid tank is connected with the feed port of the flocculation tank through a pipeline, the water outlet of the flocculation tank is connected with the water inlet of the clean water tank, and the sludge outlet of the flocculation tank is connected with the inlet of the sludge tank; a PAC feed port and a PAM feed port are arranged on a pipeline between the discharge port of the black liquor pool and the feed port of the flocculation pool, and the PAC feed port is arranged at one side of the black liquor pool close to the sewage treatment equipment; the discharge port of the PAC storage tank is linked with the PAC feed port; the discharge port of the PAM storage tank is connected with the PAM feed port, and the distance between the PAC feed port and the PAM feed port is 5 m-10 m; the water outlet of the clean water tank is respectively connected with the water inlet of the washing tank and the water inlet of the stirring tank.
The method for pulping by utilizing the straw pulping processing system comprises the following steps:
straw bundles are uniformly unpacked through a unpacking machine, unpacked straws enter a No. 1 cleaning machine to clean impurities contained in the straws, clean straws enter a pre-crushing machine through transmission of a chain rake conveyor, the straws are roughly crushed in the pre-crushing machine, straw fibers are processed into velvet shapes through a straw rubbing machine, the velvet-shaped straw fibers are finely separated through the No. 2 cleaning machine, the velvet-shaped straw fibers are separated, and the velvet-shaped straw fibers are conveyed to a quantitative discharging storage bin through a wind power conveying system to be stored;
conveying the fluffy straw fibers in the quantitative discharging storage bin to a stirring tank, adding water, uniformly stirring, adding NaOH, stirring for 90min in the stirring tank to obtain slurry, and adding H with the concentration of 5%2O2Bleaching the pulp, adding the pulp, and continuously stirring for reacting for 20 minutes to obtain straw pulp;
straw pulp discharged from a stirring tank directly enters a No. 1 dry-wet separator through a feeding auger, the No. 1 dry-wet separator separates the pulp from black liquor generated in the reaction process, the water content of the separated pulp is 40% -60%, the PH of the obtained black liquor is 9-11, the separated pulp enters a No. 1 pulp tank, water is added for stirring, the stirred pulp is sent to a pulping machine through a No. 1 pulp pump, the pulping machine refines and grinds the pulp uniformly, the pulp treated by the pulping machine enters a No. 2 pulp tank for storage, the pulp in the No. 2 pulp tank is sent to a No. 2 dry-wet separator through a No. 2 pulp pump, the ground pulp is separated from the black liquor generated in the reaction process through the No. 2 dry-wet separator, the water content of the pulp obtained by the No. 2 dry-wet separator is 40% -60%, the obtained PH is 7.5-9, the pulp enters a No. 3 pulp tank and is stirred through a No. 3 stirrer, and the stirred pulp is sent to a pulp storage tank through a No. 3 pulp pump;
conveying black liquor obtained by separation of the No. 1 dry-wet separator and the No. 2 dry-wet separator into a black liquor pool for storage for 24 hours, reducing the pH value to 7.5-9 under the influence of internal organic matters and sugar after the black liquor is stored, conveying the black liquor to a flocculation pool through a pipeline, injecting PAC with the mass percentage of 0.02% -0.1% into a PAC feed inlet through a PAC storage tank, injecting PAM with the concentration of 0.1% -0.3% into the PAM feed inlet through a PAM storage tank after 10S, flocculating a mixture of the black liquor, the PAM and the PAC discharged from the black liquor pool for 15 minutes in the flocculation pool, and feeding sludge generated after flocculation into a sludge pool; clear water generated after flocculation enters a clear water tank; and the water in the clear water tank enters the washing tank again to clean the slurry and the stirring tank to perform pulping production, and the washing tank is used for cleaning the slurry in the slurry storage tank.
The utility model has the beneficial effects that:
the device is suitable for straws containing plant fibers such as rice straws, corn straws, wheat straws, sorghum straws, millet straws, cotton straws, various hemp stalks, reeds and the like. The pulping process of the utility model is mutually supported by straw processing equipment, pulping equipment, sewage treatment equipment and sewage reuse process, thus achieving the best use effect. The straw processing equipment can complete the operations of bale breaking, cleaning, conveying, crushing, kneading, storing, quantitative outputting and dust removing of the straws at one time.
The lignin and the fiber are not separated from the straw pulp obtained by the existing straw pulping, so that the fiber is connected together and cannot be softened into paper pulp. According to the utility model, the straw fiber is directly extracted according to the characteristics of the straw, the post-processing difficulty is reduced, the post-pulping is easier, NaOH is added during stirring, the NaOH can generate heat energy enough to soften the straw fiber when meeting water, and the lignin contained in the fiber is separated from the fiber through stirring, kneading and extrusion of the stirring tank, so that the finished product paper pulp is obtained. The utility model is specially developed for straw pulping, has the advantages of compact and simple structure, convenient use and maintenance, energy-saving and high-efficiency equipment, simple and effective process, high pulp yield and no sewage discharge, and effectively solves the problems of no special equipment for straw pulping at the present stage, backward production process and environmental pollution which do not reach the standard.
Drawings
FIG. 1 is a schematic view of a straw processing apparatus;
FIG. 2 is a schematic view of a pulping apparatus;
FIG. 3 is a schematic view of a sewage treatment apparatus;
FIG. 4 is a schematic view of the blender jar 10;
fig. 5 is a right side view of fig. 4.
Detailed Description
The technical scheme of the utility model is not limited to the specific embodiments listed below, and any reasonable combination of the specific embodiments is included.
The first embodiment is as follows: the straw pulping and processing system of the embodiment consists of straw processing and processing equipment, pulping equipment and sewage treatment equipment;
the straw processing equipment consists of a bale breaker 1, a No. 1 cleaning machine 2, a chain harrow type conveyor 3, a pre-crusher 4, a straw rubbing machine 5, a No. 2 cleaning machine 6, a wind power conveying system 7, a quantitative discharging storage bin 8 and a dust removal system 9 which are connected end to end in sequence;
the pulping equipment consists of a stirring tank 10, a feeding auger 11, a 1# dry-wet separator 12, a 1# pulp tank 14, a 1# pulp pump 15, a pulping machine 16, a 2# pulp tank 18, a 2# pulp pump 19, a 2# dry-wet separator 20, a 3# pulp tank 22, a 3# pulp pump 23 and a pulp storage tank 24 which are sequentially connected end to end; a No. 1 stirrer 13 is arranged in the No. 1 pulp tank 14, a No. 2 stirrer 17 is arranged in the No. 2 pulp tank 18, and a No. 3 stirrer 21 is arranged in the No. 3 pulp tank 22;
the stirring tank 10 comprises a base 101, a tank body 102 and a material conveying auger 103, wherein the tank body 102 is arranged on the base 101, and the material conveying auger 103 is arranged inside the tank body 102; a plurality of axially arranged material guide plates 113 are arranged on the inner wall of the middle part of the tank body 102, the plurality of material guide plates 113 are arranged in an annular array, a left-handed helical blade 104 is arranged on the inner wall of the feeding side of the tank body 102, a right-handed helical blade 105 is arranged on the inner wall of the discharging side of the tank body 102, and a heat insulation layer is arranged on the outer wall of the tank body 102;
two ends of the material conveying auger 103 extend out of two ends of the tank body 102 respectively, a feeding helical blade 107 and a discharging helical blade 108 are arranged in an auger shell 106 of the material conveying auger 103, the feeding helical blade 107 and the discharging helical blade 108 are arranged on a driving shaft 129, the feeding helical blade 107 is arranged on the feeding side of the tank body 102, the discharging helical blade 108 is arranged on the feeding side of the tank body 102, and a blanking port 111 is formed in the lower part of the auger shell 106 between the feeding helical blade 107 and the discharging helical blade 108; the upper part of the auger shell 106 corresponding to the discharging helical blade 108 is open;
the sewage treatment equipment consists of a black liquor tank 25, a PAC storage tank 26, a PAM storage tank 27, a flocculation tank 28, a sludge tank 29 and a clean water tank 30; the discharge hole of the black liquor tank 25 is connected with the feed hole of the flocculation tank 28 through a pipeline, the water discharge hole of the flocculation tank 28 is connected with the water inlet of the clean water tank 30, and the sludge outlet of the flocculation tank 28 is connected with the inlet of the sludge tank 29; a PAC feed port and a PAM feed port are arranged on a pipeline between the discharge port of the black liquor tank 25 and the feed port of the flocculation tank 28, and the PAC feed port is arranged at one side of the black liquor tank 25 close to the sewage treatment equipment; the discharge port of the PAC storage tank 26 is linked with the PAC feeding port; a discharge port of the PAM storage tank 27 is connected with a PAM feed port, and the distance between the PAC feed port and the PAM feed port is 5 m-10 m; the water outlet of the clean water tank 30 is respectively connected with the water inlet of the washing tank 31 and the water inlet of the stirring tank 10.
The device of the embodiment is suitable for straws containing plant fibers such as rice straws, corn straws, wheat straws, sorghum straws, millet straws, cotton straws, various hemp stalks, reeds and the like. The pulping process of the utility model is mutually supported by straw processing equipment, pulping equipment, sewage treatment equipment and sewage reuse process, thus achieving the best use effect. The straw processing equipment can complete the operations of bale breaking, cleaning, conveying, crushing, kneading, storing, quantitative outputting and dust removing of the straws at one time.
The lignin and the fiber are not separated from the straw pulp obtained by the existing straw pulping, so that the fiber is connected together and cannot be softened into paper pulp. According to the utility model, the straw fiber is directly extracted according to the characteristics of the straw, the post-treatment difficulty is reduced, the post-pulping is easier, the heat energy enough for softening the straw fiber can be generated when NaOH is added in water during the stirring of the stirring tank, and the lignin contained in the fiber is separated from the fiber through the stirring, kneading and extrusion of the stirring tank, so that the finished product paper pulp is obtained. The utility model is specially developed for straw pulping, has the advantages of compact and simple structure, convenient use and maintenance, energy-saving and high-efficiency equipment, simple and effective process, high pulp yield and no sewage discharge, and effectively solves the problems of no special equipment for straw pulping at the present stage, backward production process and environmental pollution which do not reach the standard.
The second embodiment is as follows: the first difference between the present embodiment and the specific embodiment is: a feed inlet 109 is arranged on the auger housing 106 outside the feed side of the tank 102, and a discharge outlet 110 is arranged on the auger housing 106 outside the discharge side of the tank 102.
The third concrete implementation mode: the present embodiment differs from the first or second embodiment in that: the outer wall of the tank 102 is respectively provided with an annular tank transmission side track 115 and a tank transmission chain wheel 114 tank track 116, and the tank track 116 is arranged on the feeding side of the tank 102; the tank transmission side track 115 is arranged on the discharge side of the tank 102; an annular tank body transmission chain wheel 114 is arranged on the tank body transmission side track 115, a tank body transmission motor 126, a tank body track supporting wheel 117, a tank body transmission speed reducer 119 and a tank body transmission side track supporting wheel 118 are arranged on the base 101, the tank body transmission side track 115 is arranged on the tank body transmission side track supporting wheel 118, the tank body track 116 is arranged on the tank body track supporting wheel 117, the tank body transmission motor 126 is connected with the tank body transmission speed reducer 119, a tank body transmission speed reducer chain wheel 127 is arranged on the tank body transmission speed reducer 119, and the tank body transmission speed reducer chain wheel 127 is connected with the tank body transmission chain wheel 114 through a tank body transmission chain 128.
The fourth concrete implementation mode: the difference between this embodiment mode and one of the first to third embodiment modes is: an auger transmission chain wheel 121 is arranged on a driving shaft 129 of the material conveying auger 103, an auger speed reducer 123 and an auger motor 124 are arranged on the base 101, the auger motor 124 is connected with the auger speed reducer 123, an auger speed reducer chain wheel 122 is arranged on the auger speed reducer 123, and the auger speed reducer chain wheel 122 is connected with the auger transmission chain wheel 121 through a material conveying auger transmission chain 125.
The fifth concrete implementation mode: the difference between this embodiment and one of the first to fourth embodiments is: a water filling port 112 is arranged on the end cover of the feeding side of the material conveying auger 103.
The sixth specific implementation mode: the difference between this embodiment and one of the first to fifth embodiments is: the auger motor 124 is a speed regulating motor.
The seventh embodiment: the method for pulping by utilizing the straw pulping processing system is carried out according to the following steps:
straw bundles are uniformly unpacked through a unpacking machine 1, unpacked straws enter a No. 1 cleaning machine 2 to clean out impurities contained in the straws, clean straws enter a pre-crushing machine 4 through transmission of a chain rake conveyor 3, the straws are roughly processed and crushed in the pre-crushing machine 4, the straw fibers are processed into velvet shape through a straw rubbing machine 5, the velvet-shaped straw fibers are finely separated through a No. 2 cleaning machine 6, the velvet-shaped straw fibers are separated out, and the velvet-shaped straw fibers are conveyed to a quantitative discharging storage bin 8 through a wind power conveying system 7 to be stored;
conveying the fluffy straw fibers in the quantitative discharging storage bin 8 into a stirring tank 10, adding water, uniformly stirring, adding NaOH, stirring in the stirring tank 10 for 90min to obtain slurry, and adding H with the concentration of 5%2O2Bleaching the pulp, adding the pulp, and continuously stirring for reacting for 20 minutes to obtain straw pulp;
straw pulp discharged from a stirring tank 10 directly enters a No. 1 dry-wet separator 12 through a feeding auger 11, the No. 1 dry-wet separator 12 separates the pulp from black liquor generated in the reaction process, the water content of the pulp obtained by separation is 40-60%, the PH of the black liquor is 9-11, the separated pulp enters a No. 1 pulp tank 14, water is added for stirring, the stirred pulp is sent to a pulping machine 16 through a No. 1 pulp pump 15, the pulping machine 16 refines and grinds the pulp uniformly, the pulp treated by the pulping machine 16 enters a No. 2 pulp tank 18 for storage, the pulp in the No. 2 pulp tank 18 is sent to a No. 2 dry-wet separator 20 through a No. 2 pulp pump 19, the ground pulp is separated from the black liquor generated in the reaction process through the No. 2 dry-wet separator 20, the water content of the pulp obtained by the No. 2 dry-wet separator 20 is 40-60%, the PH of the black liquor is 7.5-9, the pulp enters a No. 3 pulp tank 22 and is stirred by a No. 3 stirrer 21, the stirred slurry is sent into a slurry storage pool 24 through a 3# slurry pump 23;
the method comprises the following steps that black liquor obtained by separation of a No. 1 dry-wet separator 12 and a No. 2 dry-wet separator 20 is conveyed into a black liquor pool 25 to be stored for 24 hours, the pH value of the black liquor is reduced to 7.5-9 under the influence of internal organic matters and sugar after storage, the black liquor is conveyed to a flocculation pool 28 through a pipeline, PAC with the mass percentage of 0.02% -0.1% is injected into a PAC feed inlet through a PAC storage tank 26, PAM with the concentration of 0.1% -0.3% is injected into a PAM feed inlet through a PAM storage tank 27 after 10S, a mixture of the black liquor, the PAM and the PAC discharged from the black liquor pool 25 is flocculated in the flocculation pool 28 for 15 minutes, and sludge generated after flocculation enters a sludge pool 29; clear water generated after flocculation enters a clear water tank 30; the water in the clean water tank enters the pulp washing tank 31 again to wash the pulp and the stirring tank 10 to carry out pulping production, and the pulp washing tank 31 is used for washing the pulp in the pulp storage tank 24.
The embodiment has the following beneficial effects:
the device of the embodiment is suitable for straws containing plant fibers such as rice straws, corn straws, wheat straws, sorghum straws, millet straws, cotton straws, various hemp stalks, reeds and the like. The pulping process of the utility model is mutually supported by straw processing equipment, pulping equipment, sewage treatment equipment and sewage reuse process, thus achieving the best use effect. The straw processing equipment can complete the operations of bale breaking, cleaning, conveying, crushing, kneading, storing, quantitative outputting and dust removing of the straws at one time.
The lignin and the fiber are not separated from the straw pulp obtained by the existing straw pulping, so that the fiber is connected together and cannot be softened into paper pulp. According to the utility model, the straw fiber is directly extracted according to the characteristics of the straw, the post-treatment difficulty is reduced, the post-pulping is easier, the heat energy enough for softening the straw fiber can be generated when NaOH is added in water during the stirring of the stirring tank, and the lignin contained in the fiber is separated from the fiber through the stirring, kneading and extrusion of the stirring tank, so that the finished product paper pulp is obtained. The utility model is specially developed for straw pulping, has the advantages of compact and simple structure, convenient use and maintenance, energy-saving and high-efficiency equipment, simple and effective process, high pulp yield and no sewage discharge, and effectively solves the problems of no special equipment for straw pulping at the present stage, backward production process and environmental pollution which do not reach the standard.
The specific implementation mode is eight: the seventh embodiment is different from the seventh embodiment in that: the mass of the water added into the stirring tank 10 is 7 times of that of the fluffy straw fiber.
The specific implementation method nine: the seventh embodiment is different from the seventh embodiment in that: NaOH with the mass accounting for 10 percent of the fluffy straw fiber is added into the stirring tank 10.
The detailed implementation mode is ten: the seventh embodiment is different from the seventh embodiment in that: h2O2The addition amount of (A) is 15% of the total mass of the material.
Example 1: with reference to fig. 1 to 5, the straw pulping and processing system of the embodiment comprises straw processing and processing equipment, pulping equipment and sewage treatment equipment;
the straw processing equipment consists of a bale breaker 1, a No. 1 cleaning machine 2, a chain harrow type conveyor 3, a pre-crusher 4, a straw rubbing machine 5, a No. 2 cleaning machine 6, a wind power conveying system 7, a quantitative discharging storage bin 8 and a dust removal system 9 which are connected end to end in sequence;
the pulping equipment consists of a stirring tank 10, a feeding auger 11, a 1# dry-wet separator 12, a 1# pulp tank 14, a 1# pulp pump 15, a pulping machine 16, a 2# pulp tank 18, a 2# pulp pump 19, a 2# dry-wet separator 20, a 3# pulp tank 22, a 3# pulp pump 23 and a pulp storage tank 24 which are sequentially connected end to end; a No. 1 stirrer 13 is arranged in the No. 1 pulp tank 14, a No. 2 stirrer 17 is arranged in the No. 2 pulp tank 18, and a No. 3 stirrer 21 is arranged in the No. 3 pulp tank 22;
the stirring tank 10 comprises a base 101, a tank body 102 and a material conveying auger 103, wherein the tank body 102 is arranged on the base 101, and the material conveying auger 103 is arranged inside the tank body 102; a plurality of axially arranged material guide plates 113 are arranged on the inner wall of the middle part of the tank body 102, the plurality of material guide plates 113 are arranged in an annular array, a left-handed helical blade 104 is arranged on the inner wall of the feeding side of the tank body 102, a right-handed helical blade 105 is arranged on the inner wall of the discharging side of the tank body 102, and a heat insulation layer is arranged on the outer wall of the tank body 102;
two ends of the material conveying auger 103 extend out of two ends of the tank body 102 respectively, a feeding helical blade 107 and a discharging helical blade 108 are arranged in an auger shell 106 of the material conveying auger 103, the feeding helical blade 107 and the discharging helical blade 108 are arranged on a driving shaft 129, the feeding helical blade 107 is arranged on the feeding side of the tank body 102, the discharging helical blade 108 is arranged on the feeding side of the tank body 102, and a blanking port 111 is formed in the lower part of the auger shell 106 between the feeding helical blade 107 and the discharging helical blade 108; the upper part of the auger shell 106 corresponding to the discharging helical blade 108 is open; a water filling port 112 is arranged on an end cover at the feeding side of the material conveying auger 103; a feeding port 109 is arranged on the auger shell 106 outside the feeding side of the tank body 102, and a discharging port 110 is arranged on the auger shell 106 outside the discharging side of the tank body 102;
the outer wall of the tank 102 is respectively provided with an annular tank transmission side track 115 and a tank transmission chain wheel 114 tank track 116, and the tank track 116 is arranged on the feeding side of the tank 102; the tank transmission side track 115 is arranged on the discharge side of the tank 102; an annular tank body transmission chain wheel 114 is arranged on the tank body transmission side track 115, a tank body transmission motor 126, a tank body track riding wheel 117, a tank body transmission speed reducer 119 and a tank body transmission side track riding wheel 118 are arranged on the base 101, the tank body transmission side track 115 is arranged on the tank body transmission side track riding wheel 118, the tank body track 116 is arranged on the tank body track riding wheel 117, the tank body transmission motor 126 is connected with the tank body transmission speed reducer 119, a tank body transmission speed reducer chain wheel 127 is arranged on the tank body transmission speed reducer 119, and the tank body transmission speed reducer chain wheel 127 is connected with the tank body transmission chain wheel 114 through a tank body transmission chain 128;
an auger transmission chain wheel 121 is arranged on a driving shaft 129 of the material conveying auger 103, an auger speed reducer 123 and an auger motor 124 are arranged on the base 101, the auger motor 124 is connected with the auger speed reducer 123, an auger speed reducer chain wheel 122 is arranged on the auger speed reducer 123, and the auger speed reducer chain wheel 122 is connected with the auger transmission chain wheel 121 through a material conveying auger transmission chain 125; the auger motor 124 is a speed regulating motor;
the stirring tank 10 in the pulping equipment is a core component, and the best use effects of quantitative feeding, uniform stirring, synchronous reaction and quantitative discharging can be realized. The rotating speed of the feeding helical blade 107 is adjustable, quantitative feeding and controllable dosing can be achieved, the water filling port 112 can be used for filling water into the tank body at any time, when the tank body 102 rotates, straw fibers are driven to be stirred under the action of the guide plate 113, meanwhile, the straw fibers are mutually kneaded, reacted and extruded, the reaction speed and the reaction time of the straw fibers can be changed by controlling the using amount of a medicament, and the discharging amount and the discharging time can be controlled by adjusting the rotating speed of the discharging helical blade 108. The reaction speed and the reaction time of the stirring tank 10 are adjustable, the discharge amount and the discharge time can be controlled, the stirring tank can be adjusted at any time according to different straw types, different water contents and different requirements for slurry discharge, and the stirring tank is core equipment of a pulping link and is provided with a heat insulation layer on the outer side of the tank body for ensuring high efficiency of reaction. The pulping equipment and the process are simple and easy to implement, the amount of water and chemical agent is less, the generation of black liquor is less, and the post-treatment is convenient.
The sewage treatment equipment consists of a black liquor tank 25, a PAC storage tank 26, a PAM storage tank 27, a flocculation tank 28, a sludge tank 29 and a clean water tank 30;
the discharge hole of the black liquor tank 25 is connected with the feed hole of the flocculation tank 28 through a pipeline, the water discharge hole of the flocculation tank 28 is connected with the water inlet of the clean water tank 30, and the sludge outlet of the flocculation tank 28 is connected with the inlet of the sludge tank 29; a PAC feed port and a PAM feed port are arranged on a pipeline between the discharge port of the black liquor tank 25 and the feed port of the flocculation tank 28, and the PAC feed port is arranged at one side of the black liquor tank 25 close to the sewage treatment equipment; the discharge port of the PAC storage tank 26 is linked with the PAC feeding port; the discharge port of the PAM storage tank 27 is connected with the PAM feed port, the distance between the PAC feed port and the PAM feed port is 10m, the time difference of adding the PAC and the PAM can be ensured by the distance, the PAC coagulant is added firstly, the bridging effect of the PAC coagulant is exerted in sewage treatment, so that impurities in sewage are mutually attracted and flocculated into clusters, and then the PAM is added, so that the impurities flocculated into clusters in the early stage form colloid clusters, and the best effect is achieved; the water outlet of the clean water tank 30 is respectively connected with the water inlet of the pulp washing tank 31 and the water inlet of the stirring tank 10;
the method for pulping by utilizing the straw pulping processing system comprises the following steps:
straw bundles are uniformly unpacked through a bale unpacking machine 1, unpacked straws enter a No. 1 cleaning machine 2 to clean impurities contained in the straws, clean straws enter a pre-crusher 4 through the transmission of a chain rake conveyor 3, the straws are roughly processed and crushed in the pre-crusher 4, but the straws cannot be used for pulping because of uneven thickness, and are also processed through a straw rubbing machine 5, straw fibers are processed into a velvet shape after being processed through the straw rubbing machine 5, at the moment, the straw fibers are extracted, but non-fibrous substances such as stems, knots, membranes and the like contained in the straws are mixed in the straws, the substances cannot be used for pulping, on the contrary, the substances are harmful substances in the pulping process, the pulping reaction time is prolonged, the consumption of water and medicaments is increased, the pulping filtrate is sticky, the substances are also main components for blackening the pulping filtrate, and the processed straws need to be finely separated through the No. 2 cleaning machine 6, the straw fiber processed into the velvet shape is separated, the velvet straw fiber can improve pulping efficiency and pulping quality, the processed velvet straw fiber is conveyed to the quantitative discharging storage bin 8 through the wind conveying system 7 to be stored, the quantitative discharging storage bin 8 provides continuous and stable feeding for stable operation of next pulping equipment, a large amount of dust can be generated due to the fact that the equipment runs and the straw per se has more impurities in the processing process, negative pressure operation of the straw processing equipment can be achieved through operation of the dust removing system 9, and dust-free production is achieved.
The straw processing and treating equipment is developed for straw processing, so that the automation degree is high, the labor force is saved, no dust is discharged, the environment is protected, the energy consumption in the processing process is extremely low, the energy consumption is less than 40 yuan/t, the production cost of straw pulping is effectively reduced, the current situation that the energy consumption is high in the straw processing link in the original processing process and the pulping cost is high is avoided, and the processed straw enters the pulping equipment through the conveyor.
Conveying the fluffy straw fibers in the quantitative discharging storage bin 8 into a stirring tank 10, adding water, uniformly stirring, and adding NaOH, wherein the mass of the water is 7 times that of the fluffy straw fibers; the mass of NaOH is 10% of that of the fluffy straw fiber; NaOH softens straw fibers, stirring is carried out while adding, a large amount of heat can be generated along with the reaction of the adding of the NaOH and water, the softening reaction is accelerated, the softening reaction time is shortened, water and the NaOH are added after the straws are added into the stirring tank 10, the reaction can be more synchronous and uniform, the conditions that partial straws are excessively reacted and are insufficiently reacted due to the fact that the straws are successively added cannot be generated, the stirring tank 10 is stirred for 90min after the water and the NaOH are added, and then H with the concentration of 5% is added2O2Bleaching the pulp H2O2The adding amount of the raw materials is 15 percent of the total mass of the materials, and the raw materials are continuously stirred and react for 20 minutes after being added to obtain straw slurry;
straw pulp discharged from a stirring tank 10 directly enters a No. 1 dry-wet separator 12 through a feeding auger 11, the No. 1 dry-wet separator 12 separates the pulp from black liquor generated in the reaction process, the water content of the pulp obtained by separation is 40-60%, the PH of the black liquor is 9-11, the separated pulp enters a No. 1 pulp tank 14, water is added for stirring, the stirred pulp is sent to a pulping machine 16 through a No. 1 pulp pump 15, the pulping machine 16 refines and grinds the pulp uniformly, the pulp treated by the pulping machine 16 enters a No. 2 pulp tank 18 for storage, the pulp in the No. 2 pulp tank 18 is sent to a No. 2 dry-wet separator 20 through a No. 2 pulp pump 19, the ground pulp is separated from the black liquor generated in the reaction process through the No. 2 dry-wet separator 20, the water content of the pulp obtained by the No. 2 dry-wet separator 20 is 40-60%, the PH of the black liquor is 7.5-9, the pulp enters a No. 3 pulp tank 22 and is stirred by a No. 3 stirrer 21, the stirred slurry is sent into a slurry storage pool 24 through a 3# slurry pump 23;
the method comprises the following steps that black liquor obtained by separation of a No. 1 dry-wet separator 12 and a No. 2 dry-wet separator 20 is conveyed into a black liquor pool 25 to be stored for 24 hours, the pH value of the black liquor is reduced to 7.5-9 under the influence of internal organic matters and sugar after storage, the black liquor is conveyed to a flocculation pool 28 through a pipeline, PAC polyaluminum chloride with the mass percentage of 0.05 percent is injected into a PAC feed inlet through a PAC storage tank 26, PAM polyacrylamide with the concentration of 0.2 percent is injected into the PAM feed inlet through a PAM storage tank 27 after 10S, a mixture of the black liquor, the PAM and the PAC discharged from the black liquor pool 25 is flocculated in the flocculation pool 28 for 15 minutes, and sludge generated after flocculation enters a sludge pool 29; clear water generated after flocculation enters a clear water tank 30; the water in the clean water tank enters the pulp washing tank 31 again to wash the pulp and the stirring tank 10 to carry out pulping production. The wash tank 31 is used to wash the stock in the stock tank 24.
The straw that this embodiment adopted is maize straw, and the straw thick liquids of production can replace wood pulp completely, can produce cultural paper, wrapping paper, corrugated paper, household paper etc..
Claims (6)
1. The straw pulping and processing system is characterized in that: the straw pulping and processing system consists of straw processing equipment, pulping equipment and sewage treatment equipment;
the straw processing equipment consists of a bale breaker (1), a No. 1 cleaning machine (2), a chain rake conveyor (3), a pre-crusher (4), a straw filament-kneading machine (5), a No. 2 cleaning machine (6), a wind power conveying system (7), a quantitative discharging storage bin (8) and a dust removal system (9) which are sequentially connected end to end;
the pulping equipment consists of a stirring tank (10), a feeding auger (11), a No. 1 dry-wet separator (12), a No. 1 pulp tank (14), a No. 1 pulp pump (15), a pulping machine (16), a No. 2 pulp tank (18), a No. 2 pulp pump (19), a No. 2 dry-wet separator (20), a No. 3 pulp tank (22), a No. 3 pulp pump (23) and a pulp storage tank (24) which are connected end to end in sequence; a No. 1 stirrer (13) is arranged in the No. 1 pulp tank (14), a No. 2 stirrer (17) is arranged in the No. 2 pulp tank (18), and a No. 3 stirrer (21) is arranged in the No. 3 pulp tank (22);
the stirring tank (10) comprises a base (101), a tank body (102) and a material conveying auger (103), wherein the tank body (102) is arranged on the base (101), and the material conveying auger (103) is arranged in the tank body (102); a plurality of axially arranged material guide plates (113) are arranged on the inner wall of the middle part of the tank body (102), the material guide plates (113) are arranged in an annular array, a left-handed helical blade (104) is arranged on the inner wall of the feeding side of the tank body (102), a right-handed helical blade (105) is arranged on the inner wall of the discharging side of the tank body (102), and a heat insulation layer is arranged on the outer wall of the tank body (102);
two ends of the material conveying auger (103) extend out of two ends of the tank body (102) respectively, a feeding helical blade (107) and a discharging helical blade (108) are arranged in an auger shell (106) of the material conveying auger (103), the feeding helical blade (107) and the discharging helical blade (108) are arranged on a driving shaft (129), the feeding helical blade (107) is arranged on the feeding side of the tank body (102), the discharging helical blade (108) is arranged on the feeding side of the tank body (102), and a blanking port (111) is formed in the lower part of the auger shell (106) between the feeding helical blade (107) and the discharging helical blade (108); the upper part of the packing auger shell (106) corresponding to the discharging helical blade (108) is open;
the sewage treatment equipment consists of a black liquor tank (25), a PAC (PAC) storage tank (26), a PAM (Polyacrylamide) storage tank (27), a flocculation tank (28), a sludge tank (29) and a clean water tank (30); a discharge hole of the black liquid tank (25) is connected with a feed hole of the flocculation tank (28) through a pipeline, a water outlet of the flocculation tank (28) is connected with a water inlet of the clean water tank (30), and a sludge outlet of the flocculation tank (28) is connected with an inlet of the sludge tank (29); a PAC feed port and a PAM feed port are arranged on a pipeline between the discharge port of the black liquid tank (25) and the feed port of the flocculation tank (28), and the PAC feed port is arranged at one side of the black liquid tank (25) close to the sewage treatment equipment; the discharge port of the PAC storage tank (26) is linked with the PAC feeding port; a discharge port of the PAM storage tank (27) is connected with a PAM feed port, and the distance between the PAC feed port and the PAM feed port is 5-10 m; the water outlet of the clean water tank (30) is respectively connected with the water inlet of the pulp washing tank (31) and the water inlet of the stirring tank (10).
2. The straw pulping processing system of claim 1, wherein: a feeding port (109) is arranged on the auger housing (106) outside the feeding side of the tank body (102), and a discharging port (110) is arranged on the auger housing (106) outside the discharging side of the tank body (102).
3. The straw pulping processing system of claim 1, wherein: the outer wall of the tank body (102) is respectively provided with an annular tank body transmission side track (115) and a tank body transmission chain wheel (114) tank body track (116), and the tank body track (116) is arranged on the feeding side of the tank body (102); the tank transmission side track (115) is arranged on the discharge side of the tank (102); an annular tank body transmission chain wheel (114) is arranged on the tank body transmission side track (115), a tank body transmission motor (126), a tank body track supporting wheel (117), a tank body transmission speed reducer (119) and a tank body transmission side track supporting wheel (118) are arranged on the base (101), the tank body transmission side track (115) is arranged on the tank body transmission side track supporting wheel (118), the tank body track (116) is arranged on the tank body track supporting wheel (117), the tank body transmission motor (126) is connected with the tank body transmission speed reducer (119), a tank body transmission speed reducer chain wheel (127) is arranged on the tank body transmission speed reducer (119), and the tank body transmission speed reducer chain wheel (127) is connected with the tank body transmission chain wheel (114) through a tank body transmission chain (128).
4. The straw pulping processing system of claim 1, wherein: an auger transmission chain wheel (121) is arranged on a driving shaft (129) of the material conveying auger (103), an auger speed reducer (123) and an auger motor (124) are arranged on the base (101), the auger motor (124) is connected with the auger speed reducer (123), an auger speed reducer chain wheel (122) is arranged on the auger speed reducer (123), and the auger speed reducer chain wheel (122) is connected with the auger transmission chain wheel (121) through a material conveying auger transmission chain (125).
5. The straw pulping processing system of claim 1, wherein: a water filling port (112) is arranged on the end cover of the feeding side of the material conveying auger (103).
6. The straw pulping processing system of claim 4, wherein: the packing auger motor (124) is a speed regulating motor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122079610.3U CN215593486U (en) | 2021-08-31 | 2021-08-31 | Straw slurrying system of processing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122079610.3U CN215593486U (en) | 2021-08-31 | 2021-08-31 | Straw slurrying system of processing |
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| CN215593486U true CN215593486U (en) | 2022-01-21 |
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| CN202122079610.3U Active CN215593486U (en) | 2021-08-31 | 2021-08-31 | Straw slurrying system of processing |
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Effective date of registration: 20221207 Address after: 154100 Group 8, 5th Committee, Xing'an District, Hegang City, Heilongjiang Province Patentee after: HEGANG TIANFENG AGRICULTURAL MACHINERY MANUFACTURING Co.,Ltd. Address before: 154100 group 9, 12th Committee, Xingwang community, Xing'an District, Hegang City, Heilongjiang Province Patentee before: Hegang RuiChuang Technology Development Co.,Ltd. |