CN111689488B - Process and equipment for preparing biochar for sewage treatment - Google Patents
Process and equipment for preparing biochar for sewage treatment Download PDFInfo
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- CN111689488B CN111689488B CN202010573159.8A CN202010573159A CN111689488B CN 111689488 B CN111689488 B CN 111689488B CN 202010573159 A CN202010573159 A CN 202010573159A CN 111689488 B CN111689488 B CN 111689488B
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/05—Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
Abstract
The invention discloses a biochar preparation process and equipment for sewage treatment, which comprises a storage bin, a driving mechanism and one or more biochar dispersing units, wherein the storage bin is used for storing biochar; each biochar dispersing unit comprises a dispersing platform, a discharging mechanism and a discharging barrel; the discharge hole at the bottom of the storage bin is positioned above the material bearing surface of the dispersion platform, and the distance between the discharge hole at the bottom of the storage bin and the material bearing surface is 50cm-150cm; the discharging mechanism is installed on the dispersing platform, and the driving mechanism drives the discharging mechanism so as to convey the biochar on the material bearing surface to the discharging port of the discharging barrel. According to the invention, in the process that the biochar falls onto the dispersing platform of the biochar dispersing unit in a free falling mode from the discharge port, the biochar with large particle size, the biochar with medium particle size and the biochar with small particle size are obtained through the inclined screening mechanism, so that the natural particle size of the biochar is maintained, and a large amount of biochar with large particle size is obtained.
Description
Technical Field
The invention relates to the technical field of biochar preparation. In particular to a process and equipment for preparing biochar for sewage treatment.
Background
The biochar has good adsorption effect in the aspect of anhydrous treatment and is widely applied. However, in the actual use process of the biochar, the biochar particles are found to be too small, the bed layer is tightly filled, the resistance of fluid passing through the bed layer is increased, and although a good filtering effect is achieved, the required gas-water ratio is large in order to obtain a certain filtering speed; meanwhile, the strength of the backwash water in the backwash process is further increased. Meanwhile, the small-particle biochar is easy to form a pollutant accumulation layer on one side of a water inlet layer in the sewage treatment process, the difficulty of passing the sewage through the adsorption layer is further increased, the change frequency of the biochar layer is higher or the backwashing frequency is higher, and the small-particle biochar layer cannot be too thick. Therefore, the sewage is urgently needed to be adsorbed by biochar with different particle sizes in a grading way, and the large-particle biochar adsorbs the sewage and then adsorbs the sewage by utilizing the small-particle biochar, so that the aggregation of suspended matters in the sewage in the small-particle biochar layer is reduced, and the replacement period and the backwashing period of the small-particle biochar layer are reduced.
In the prior art, biochar obtained by pyrolysis is crushed and sieved, although biochar with different particle sizes can be obtained, most biochar with different particle sizes is only agglomerated together and has different particle sizes, when fluid flows through a bed layer, the agglomerated biochar can be disintegrated to form small-particle biochar again, and the effect of classifying and adsorbing sewage cannot be achieved. Meanwhile, the biochar particles are not uniform, especially when large particles and small particles are mixed, the bed layer is not easy to be tightly filled, the porosity of the bed layer is large, when liquid flows through the bed layer, the flow velocity distribution is not uniform, high back mixing is easy to generate, and the adsorption effect is poor.
In order to obtain the biochar with different particle sizes, the optimal scheme is that the biochar is not manually crushed, and the biochar with different particle sizes is directly screened out after being discharged from a furnace, so that the crushing of large-particle biochar caused by manual crushing can be reduced, the proportion of the large-particle biochar is improved, and the actual requirement of sewage treatment is met. At present, no preparation device or process capable of reducing artificial breakage of large-particle biochar exists in the prior art.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide a biochar preparation process and equipment for sewage treatment, which can reduce artificial breakage of large-particle biochar, improve the yield of the large-particle biochar and realize sewage graded adsorption treatment.
In order to solve the technical problems, the invention provides the following technical scheme:
the biochar preparation equipment for sewage treatment comprises a storage bin, a driving mechanism and one or more biochar dispersing units; each biochar dispersing unit comprises a dispersing platform, a discharging mechanism and a discharging barrel; the discharge hole at the bottom of the storage bin is positioned above the material bearing surface of the dispersion platform, and the distance between the discharge hole at the bottom of the storage bin and the material bearing surface is 50cm-150cm; the discharging mechanism is installed on the dispersing platform, and the driving mechanism drives the discharging mechanism so as to convey the biochar on the material bearing surface to the discharging port of the discharging barrel.
According to the biochar preparation equipment for sewage treatment, the discharging mechanism comprises a sliding block, a driven wheel and a connecting rod; the sliding block is positioned on the material bearing surface, one end of the connecting rod is hinged to the sliding block, and the other end of the connecting rod is hinged to the edge of the driven wheel; the driving mechanism is in driving connection with the driven wheel.
Above-mentioned a biological charcoal preparation equipment for sewage treatment, dispersion platform's first end bottom fixed mounting has auxiliary support plate, auxiliary support plate outwards extends the supporting part, install the bearing on the supporting part, from the upper end of driving wheel fixed mounting in the pivot, the lower extreme of pivot is installed on the bearing.
In the above biochar preparation equipment for sewage treatment, the dispersion platform comprises a horizontal plate with the material receiving surface, a first vertical plate and a second vertical plate, wherein the first vertical plate and the second vertical plate are respectively fixedly installed on two opposite edges of the horizontal plate; the sliding block is positioned in a groove formed by the first vertical plate, the second vertical plate and the horizontal plate, and the sliding block is in clearance sliding fit with the first vertical plate, the sliding block is in clearance sliding fit with the second vertical plate and the sliding block is in clearance sliding fit with the horizontal plate.
According to the biochar preparation equipment for sewage treatment, the dispersing platform further comprises a splash guard, the discharge hole is located in the splash guard, and a slide block inlet and outlet is formed in the side wall, adjacent to the slide block, of the splash guard; the top of the splash guard is sealed, and the side wall of the splash guard is respectively connected with the first vertical plate and the second vertical plate in a sealing manner; a sealing plate is arranged at the second end of the dispersing platform, the bottom edge of the sealing plate is in sealing connection with the horizontal plate, the top edge of the sealing plate is in sealing connection with the side wall of the splash guard, and two vertical edges of the sealing plate are respectively in sealing connection with the first vertical plate and the second vertical plate; the upper end edge of the feeding barrel is connected with the bottom plate surface of the horizontal plate in a sealing mode, and the horizontal plate is provided with a blanking hole communicated with the feeding hole.
According to the biochar preparation equipment for sewage treatment, the lower charging barrel is provided with the blast pipe and the inclined screening mechanism, one end of the blast pipe is in fluid communication with the air outlet of the air blower, and the other end of the blast pipe is in fluid communication with the lower charging barrel; the screening inlet of the inclined screening mechanism is opposite to the air outlet of the blast pipe, and the screening inlet is communicated with the fluid of the discharging barrel.
The biochar preparation equipment for sewage treatment comprises the inclined screening mechanism, the inclined screening mechanism and the sewage treatment device, wherein the inclined screening mechanism comprises a screening bin, and a first screening net and a second screening net which are obliquely arranged in the screening bin respectively, the first screening net is arranged above the second screening net, and the included angles between the net surfaces of the first screening net and the second screening net and the horizontal plane are both 30-60 degrees; a large-particle-size biochar falling channel is formed between the first screening net and the side wall of the top of the screening bin, a medium-particle-size biochar falling channel is formed between the first screening net and the second screening net, and a small-particle-size biochar falling channel is formed between the second screening net and the side wall of the bottom of the screening bin; the large-particle-size biochar falling channel is communicated with the screening inlet, the medium-particle-size biochar falling channel is communicated with the large-particle-size biochar falling channel through meshes on the first screening net, and the small-particle-size biochar falling channel is communicated with the medium-particle-size biochar falling channel through the second screening net; the mesh number of the first screening mesh is less than 16 meshes, and the mesh number of the second screening mesh is 40-60 meshes.
The biochar preparation equipment for sewage treatment further comprises a biochar crushing mechanism, and the biochar crushing mechanism comprises a half gear, a first rack, a second rack, an upper reciprocating positioning rod, a lower reciprocating positioning rod, a pressing plate and an installation box; the half gear, the first rack and the second rack are all positioned in the installation box, the half gear is positioned between the first rack and the second rack, and the first rack and the second rack are parallel to each other and can be meshed with the half gear; the half gear is installed on a side vertical wall of the installation box through a pressure dispersion wheel shaft and a bearing, the upper end of the first rack and the upper end of the second rack are fixedly connected with the lower end of the upper reciprocating positioning rod through upper connecting rods respectively, and the upper end of the upper reciprocating positioning rod penetrates through a positioning hole in the side wall of the top of the installation box and extends out of the installation box; the lower end of the first rack and the lower end of the second rack are fixedly connected with the upper end of the lower reciprocating positioning rod through lower connecting rods respectively, and the lower end of the lower reciprocating positioning rod penetrates through a positioning hole in the side wall of the bottom of the installation box and is fixedly connected with a pressing plate positioned on the outer side of the installation box; the pressing plate is positioned right above the material receiving surface at the second end of the dispersing platform and is arranged in the horizontal direction: the pressing plate is located between the discharge hole and the feed opening.
According to the biochar preparation equipment for sewage treatment, the number of the biochar dispersing units is three, the biochar dispersing units are sequentially distributed from top to bottom, and the biochar pressure dispersing mechanism is arranged between the penultimate biochar dispersing unit and the penultimate biochar dispersing unit; the lower end of the blanking barrel of the upper layer of the biochar dispersing unit is positioned above the material bearing surface of the lower layer of the biochar dispersing unit; the driving mechanism comprises a motor, a driving shaft, a driving wheel, a belt and a pressing and dispersing mechanism driving unit; the driving wheel is fixedly installed on the driving shaft, the motor drives the driving shaft and the driving wheel to synchronously rotate together, the driven wheel of each biochar dispersing unit is in driving connection with a different driving wheel through a different belt, the dispersing mechanism driving unit comprises a reversing driven wheel, a first bevel gear and a second bevel gear, the reversing driven wheel and the first bevel gear are coaxially and relatively fixedly installed, and the second bevel gear is installed at one end, located outside the installation box, of the dispersing wheel shaft; the reversing driven wheel is in driving connection with the driving wheel through the belt, and the reversing driven wheel drives the second bevel gear and the half gear to coaxially rotate through the first bevel gear.
The biochar preparation process for sewage treatment comprises the following steps:
(A) the biochar pyrolyzed in the bin falls onto a material bearing surface of a dispersing platform of a biochar dispersing unit in a free-fall mode from a discharge hole at the bottom of the bin (1); the distance between the discharge port (11) and the material receiving surface is 50cm-150cm;
(B) the driving mechanism is used for driving the discharging mechanism, so that the biochar on the material bearing surface is conveyed to a feed opening at the upper end of the feeding barrel, and the biochar freely falls along the feeding barrel;
(C) air is blown into the lower charging barrel through the blast pipe by using an air blower, so that the biochar with smaller weight sequentially enters the inclined screening mechanism from the lower charging barrel and the screening inlet, and the biochar with smaller weight is screened into biochar with large particle size, biochar with medium particle size and biochar with small particle size by the screen in the inclined screening mechanism according to the particle size;
(D) the biochar with larger weight falls onto the material bearing surface of the lower biochar dispersing unit along the blanking cylinder, and the distance between the discharge port at the lower end of the blanking cylinder and the material bearing surface is 50cm-150cm; repeating the operations from step (B) to step (D) 1-3 times;
(E) and a biochar pressure dispersing mechanism is arranged above the material bearing surface of the lowest biochar dispersing unit, and biochar with larger weight on the material bearing surface of the lowest biochar dispersing unit is pressed and dispersed by the biochar pressure dispersing mechanism before the biochar enters the blanking barrel of the lowest biochar dispersing unit.
The technical scheme of the invention achieves the following beneficial technical effects:
1. the process that the biochar falls onto the dispersing platform of the biochar dispersing unit in a free falling mode from the discharge port can crush large biochar formed by the agglomeration of biochar particles in the pyrolysis process, and the biochar particles are reduced as much as possible to be crushed into biochar with smaller particle size.
2. The slider of discharge mechanism can be carried the biochar that is fallen to next material according to the certain speed and accept the face, can continue to carry out the breakage to the bold biochar that the pyrolysis in-process formed because of the biological charcoal granule caking, can prevent that the biochar from piling up on the material is accepted the face and influencing the crushing effect of bold biochar because of the biological charcoal granule caking forms, and the biochar is in the in-process that falls and is sieved the classification by air-blower and screening mechanism.
3. This application has set up the biological charcoal pressure mechanism that looses, can paste the rubber pad on the clamp plate of the mechanism is scattered to the biological charcoal pressure, only will break up because of the bold biological charcoal pressure that the biological charcoal granule caking formed, and can not crush the biological charcoal granule.
4. The biological carbon flows in the splash guard, so that particle pollution and waste caused by scattering of the biological carbon are prevented.
5. The biochar with large particle size, the biochar with medium particle size and the biochar with small particle size are obtained by inclining the screening mechanism, so that not only is the natural particle size of the biochar maintained, but also a large amount of biochar with large particle size is obtained. And each biochar dispersing unit is screened, so that the accumulation of biochar can be prevented, the natural particle size of the biochar can be kept as far as possible, and the biochar with large particle size, biochar with medium particle size and biochar with small particle size can be used for classifying and adsorbing sewage.
Drawings
FIG. 1 is a schematic view showing the construction of a biochar production apparatus for wastewater treatment according to the present invention;
FIG. 2 is a schematic side view showing the structure of a splash guard of the biochar preparation apparatus for wastewater treatment according to the present invention;
FIG. 3 is a schematic view showing the construction of a driving unit of a dispersing mechanism of a biochar manufacturing apparatus for wastewater treatment according to the present invention;
FIG. 4 is a schematic structural view of a biochar pressure dispersing mechanism of the biochar preparation equipment for sewage treatment according to the present invention.
The reference numbers in the figures denote: 1-a storage bin; 11-a discharge hole; 2-a dispersion platform; 21-material bearing surface; 22-a secondary support plate; 23-a bearing; 24-a rotating shaft; 25-a splash guard; 251-slide entrance/exit; 26-closing plate; 3-discharging the material barrel; 31-a feed opening; 32-a blast pipe; 4-a discharging mechanism; 41-a slide block; 42-a driven wheel; 43-connecting rod; 5-a drive mechanism; 51-a motor; 52-a drive shaft; 53-driving wheel; 54-a belt; 55-driven wheel; 56-first bevel gear; 57-a second bevel gear; 6-inclined screening mechanism; 61-a sieve inlet; 62-a first screening mesh; 63-a second screening mesh; 7-a pressure dispersion mechanism; 71-half gear; 72-a first rack; 73-a second rack; 74-upper reciprocating positioning rod; 75-lower reciprocating positioning rod; 76-a platen; 77-mounting the box; 78-pressure dispersion wheel shaft.
Detailed Description
As shown in fig. 1, the biochar preparation equipment for sewage treatment of the embodiment includes a bin 1, a driving mechanism 5 and one or more biochar dispersing units; each biochar dispersing unit comprises a dispersing platform 2, a discharging mechanism 4 and a discharging barrel 3; the discharge hole 11 at the bottom of the storage bin 1 is positioned above the material receiving surface 21 of the dispersing platform 2, and the distance between the discharge hole 11 at the bottom of the storage bin 1 and the material receiving surface 21 is 50cm-150cm; the discharging mechanism 4 is installed on the dispersing platform 2, and the driving mechanism 5 drives the discharging mechanism 4 so as to convey the biochar on the material bearing surface 21 to the discharging opening 31 of the discharging barrel 3. Therefore, the biochar can fall on the material bearing surface 21 of the dispersing platform 2 of the biochar dispersing unit in a free falling mode from the discharge port 11 at the bottom of the bin 1, and the crushed biochar is conveyed to the discharging barrel 3 through the discharge mechanism 4 to be screened and crushed in the next step.
As shown in fig. 1, the discharging mechanism 4 includes a sliding block 41, a driven wheel 42 and a connecting rod 43; the sliding block 41 is positioned on the material receiving surface 21, one end of the connecting rod 43 is hinged on the sliding block 41, and the other end of the connecting rod 43 is hinged on the edge of the driven wheel 42; the driving mechanism 5 is in driving connection with the driven wheel 42.
The dispersing platform 2 comprises a horizontal plate with the material receiving surface 21, a first vertical plate and a second vertical plate, and the first vertical plate and the second vertical plate are respectively and fixedly arranged on two opposite edges of the horizontal plate; the sliding block 41 is located in a groove formed by the first vertical plate, the second vertical plate and the horizontal plate, and the sliding block 41 is in clearance sliding fit with the first vertical plate, the sliding block 41 is in clearance sliding fit with the second vertical plate and the sliding block 41 is in clearance sliding fit with the horizontal plate.
An auxiliary supporting plate 22 is fixedly installed at the bottom of the first end of the dispersing platform 2, a supporting portion extends outwards from the auxiliary supporting plate 22, a bearing 23 is installed on the supporting portion, the driven wheel 42 is fixedly installed at the upper end of the rotating shaft 24, and the lower end of the rotating shaft 24 is installed on the bearing 23.
The dispersing platform 2 comprises a horizontal plate with the material receiving surface 21, a first vertical plate and a second vertical plate, and the first vertical plate and the second vertical plate are respectively and fixedly arranged on two opposite edges of the horizontal plate; the sliding block 41 is located in a groove formed by the first vertical plate, the second vertical plate and the horizontal plate, and the sliding block 41 is in clearance sliding fit with the first vertical plate, the sliding block 41 is in clearance sliding fit with the second vertical plate and the sliding block 41 is in clearance sliding fit with the horizontal plate.
The slider 41 of the discharging mechanism can push the fallen biochar to the next material bearing surface at a certain speed, the large biochar formed by the agglomeration of the biochar particles in the pyrolysis process can be continuously crushed, the influence of the accumulation of the biochar on the material bearing surface on the crushing effect of the large biochar formed by the agglomeration of the biochar particles can be prevented, and the biochar is screened and classified by the air blower and the screening mechanism in the falling process.
As shown in fig. 1 and fig. 2, the dispersing platform 2 further includes a splash guard 25, the discharge port 11 is located in the splash guard 25, and a slide block inlet and outlet 251 is formed on a side wall of the splash guard 25 adjacent to the slide block 41; the top of the splash guard 25 is sealed, and the side wall of the splash guard 25 is respectively connected with the first vertical plate and the second vertical plate in a sealing manner; a sealing plate 26 is installed at the second end of the dispersing platform 2, the bottom edge of the sealing plate 26 is connected with the horizontal plate in a sealing manner, the top edge of the sealing plate 26 is connected with the side wall of the splash guard 25 in a sealing manner, and two vertical edges of the sealing plate 26 are respectively connected with the first vertical plate and the second vertical plate in a sealing manner; the upper end border of lower feed cylinder 3 with the bottom face sealing connection of horizontal plate, and set up on the horizontal plate with the blanking hole of feed opening 31 intercommunication. The biological carbon flows in the splash guard, so that particle pollution and waste caused by scattering of the biological carbon are prevented.
As shown in fig. 1, a blast pipe 32 and an inclined sieving mechanism 6 are installed on the lower barrel 3, one end of the blast pipe 32 is in fluid communication with an air outlet of a blower, and the other end of the blast pipe 32 is in fluid communication with the lower barrel 3; the sieving inlet 61 of the inclined sieving mechanism 6 is opposite to the air outlet of the blast pipe 32, and the sieving inlet 61 is in fluid communication with the lower charging barrel 3.
The inclined screening mechanism 6 comprises a screening bin, a first screening net 62 and a second screening net 63 which are obliquely arranged in the screening bin respectively, wherein the first screening net 62 is arranged above the second screening net 63, and the included angles between the net surfaces of the first screening net 62 and the second screening net 63 and the horizontal plane are both 45 degrees; a large-particle-size biochar falling channel is formed between the first screening net 62 and the side wall of the top of the screening bin, a medium-particle-size biochar falling channel is formed between the first screening net 62 and the second screening net 63, and a small-particle-size biochar falling channel is formed between the second screening net 63 and the side wall of the bottom of the screening bin; the large-particle-size biochar falling channel is communicated with the screening inlet 61, the medium-particle-size biochar falling channel is communicated with the large-particle-size biochar falling channel through meshes on the first screening net 62, and the small-particle-size biochar falling channel is communicated with the medium-particle-size biochar falling channel through the second screening net 63; the mesh number of the first screening net 62 is less than 16 meshes, and the mesh number of the second screening net 63 is 40-60 meshes.
The biochar with large particle size, the biochar with medium particle size and the biochar with small particle size are obtained by inclining the screening mechanism, so that not only is the natural particle size of the biochar maintained, but also a large amount of biochar with large particle size is obtained.
As shown in fig. 1 and 4, the biochar preparation equipment for sewage treatment further comprises a biochar scattering mechanism 7, wherein the biochar scattering mechanism 7 comprises a half gear 71, a first rack 72, a second rack 73, an upper reciprocating positioning rod 74, a lower reciprocating positioning rod 75, a pressing plate 76 and an installation box 77; the half-gear 71, the first rack 72 and the second rack 73 are all located in the mounting box 77 and the half-gear 71 is located between the first rack 72 and the second rack 73, the first rack 72 and the second rack 73 are parallel to each other and all can be meshed with the half-gear 71; the half gear 71 is mounted on a side vertical wall of the mounting box 77 through a pressure dispersion wheel shaft 78 and a bearing, the upper end of the first rack 72 and the upper end of the second rack 73 are respectively fixedly connected with the lower end of the upper reciprocating positioning rod 74 through upper connecting rods, and the upper end of the upper reciprocating positioning rod 74 penetrates through a positioning hole in the side wall of the top of the mounting box 77 and extends out of the mounting box 77; the lower end of the first rack 72 and the lower end of the second rack 73 are respectively and fixedly connected with the upper end of the lower reciprocating positioning rod 75 through lower connecting rods, and the lower end of the lower reciprocating positioning rod 75 penetrates through a positioning hole in the side wall of the bottom of the mounting box 77 and is fixedly connected with a pressing plate 76 positioned outside the mounting box 77; the press plate 76 is located directly above the material receiving surface 21 of the second end of the dispersion platform 2 and in the horizontal direction: the pressing plate 76 is located between the discharge hole 11 and the feed opening 31. The biochar crushing mechanism can be used for sticking a rubber pad on the pressing plate and only crushing the biochar which is hard to agglomerate.
As shown in fig. 1, the biochar dispersing units in this embodiment are three and sequentially distributed from top to bottom, and the biochar pressure dispersing mechanism 7 is installed between the penultimate biochar dispersing unit and the penultimate biochar dispersing unit; the lower end of the blanking barrel 3 of the upper layer of the biochar dispersing unit is positioned above the material bearing surface 21 of the lower layer of the biochar dispersing unit; as shown in fig. 1, 3 and 4, the drive mechanism 5 includes a motor 51, a drive shaft 52, a drive pulley 53, a belt 54, and a crushing mechanism drive unit; the driving wheel 53 is fixedly arranged on the driving shaft 52, the motor 51 drives the driving shaft 52 and the driving wheel 53 to synchronously rotate together, the driven wheel 42 of each biochar dispersing unit is respectively in driving connection with a different driving wheel 53 through a different belt 54, the dispersing mechanism driving unit comprises a reversing driven wheel 55, a first bevel gear 56 and a second bevel gear 57, the reversing driven wheel 55 and the first bevel gear 56 are coaxially and relatively fixedly arranged, and the second bevel gear 57 is arranged at one end of the dispersing wheel shaft 78, which is positioned outside the mounting box 77; the reversing driven wheel 55 is in driving connection with the driving wheel 53 through one belt 54, and the reversing driven wheel 55 drives the second bevel gear 57 and the half gear 71 to rotate coaxially through the first bevel gear 56.
The motor 51 drives the driving shaft 52 and the driving wheel 53 to rotate together, the driving wheel 53 drives the driven wheel 42 through the belt 54, the rotation of the driven wheel 42 drives the connecting rod 43, and the connecting rod 43 drives the sliding block 41 to reciprocate along the length direction of the horizontal plate because both ends of the connecting rod 43 are hinged. One driving wheel 53 drives the driven wheel 55 to rotate through a belt 54, so that the driven wheel 55 drives the first bevel gear 56 to coaxially rotate, the second bevel gear 57 is driven through the first bevel gear 56, the second bevel gear 57 drives the half gear 71 to rotate through a pressure dispersion wheel shaft 78, the half gear 71 rotates and drives the first rack 72, the second rack 73, the upper reciprocating positioning rod 74, the lower reciprocating positioning rod 75 and the pressure plate 76 which are fixedly mounted together through the first rack 72 and the second rack 73 on two sides of the half gear 71 to reciprocate up and down, and when the slide block 41 moves towards the direction close to the pressure plate 76, the first rack 72, the second rack 73, the upper reciprocating positioning rod 74, the lower reciprocating positioning rod 75 and the pressure plate 76 which are fixedly mounted together move up together so that the slide block 41 pushes materials to enter the position under the pressure plate 76; when the sliding block 41 moves towards the direction far away from the pressing plate 76, the first rack 72, the second rack 73, the upper reciprocating positioning rod 74, the lower reciprocating positioning rod 75 and the pressing plate 76 which are fixedly arranged together move downwards together, so that the pressing plate 76 can disperse large biochar blocks formed by the caking of the biochar particles below the pressing plate 76. The stroke of the pressure plate 76 is adjusted, so that the large biochar particles formed by the agglomeration of the biochar particles can be crushed to reduce the crushing proportion of the biochar particles.
The process for preparing the biochar by the biochar for sewage treatment comprises the following steps:
A. the biochar pyrolyzed in the bin 1 falls on a material receiving surface 21 of a dispersing platform 2 of a first layer biochar dispersing unit in a free falling form from a discharge hole 11 at the bottom of the bin 1; the distance between the discharge port 11 and the material receiving surface 21 is 50cm-150cm;
B. the discharging mechanism 4 is driven by the driving mechanism 5, so that the biochar on the material receiving surface 21 is conveyed to the discharging opening 31 at the upper end of the charging barrel 3, and the biochar freely falls along the charging barrel 3;
C. air is blown into the lower charging barrel 3 through the blast pipe 32 by using an air blower, so that the biochar with smaller weight sequentially enters the inclined screening mechanism 6 from the charging barrel 3 and the screening inlet 61, and the biochar with smaller weight is screened into biochar with large particle size, biochar with medium particle size and biochar with small particle size by a screen in the inclined screening mechanism 6 according to the particle size;
D. the large biochar formed by the agglomeration of the biochar particles continuously falls onto the material bearing surface 21 of the second biochar dispersing unit below along the blanking barrel 3, and the distance between the discharge port at the lower end of the blanking barrel 3 and the material bearing surface 21 is 50cm-150cm; repeating the operations from the step B to the step D for 1-3 times;
E. a biochar scattering mechanism 7 is installed above the material bearing surface 21 of the lowest biochar dispersing unit, and large biochar blocks formed by biochar particle agglomeration on the material bearing surface 21 of the lowest biochar dispersing unit are scattered through the biochar scattering mechanism 7 before the biochar enters the blanking barrel 3 of the lowest biochar dispersing unit.
The invention utilizes the free falling body of the large biochar formed by the agglomeration of the biochar particles to scatter, avoids the biochar particles from being crushed when being manually crushed, keeps the shape and the size of the biochar particles after pyrolysis as much as possible, and can obtain more large-particle biochar, thereby being capable of utilizing the large-particle biochar, the medium-particle biochar and the small-particle biochar to carry out graded adsorption on sewage.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications are possible which remain within the scope of the appended claims.
Claims (1)
1. The biochar preparation equipment for sewage treatment is characterized by comprising a bin (1), a driving mechanism (5) and three biochar dispersing units; each biochar dispersing unit comprises a dispersing platform (2), a discharging mechanism (4) and a discharging barrel (3); the discharge port (11) at the bottom of the storage bin (1) is positioned above the material receiving surface (21) of the dispersing platform (2), the distance between the discharge port (11) at the bottom of the storage bin (1) and the material receiving surface (21) is 50cm-150cm, the discharge mechanism (4) is installed on the dispersing platform (2), and the driving mechanism (5) drives the discharge mechanism (4) so as to convey the biochar on the material receiving surface (21) to the discharge port (31) of the discharge barrel (3); the discharging mechanism (4) comprises a sliding block (41), a driven wheel (42) and a connecting rod (43); the sliding block (41) is positioned on the material receiving surface (21), one end of the connecting rod (43) is hinged to the sliding block (41), and the other end of the connecting rod (43) is hinged to the edge of the driven wheel (42); the driving mechanism (5) is in driving connection with the driven wheel (42);
an auxiliary supporting plate (22) is fixedly installed at the bottom of the first end of the dispersing platform (2), a supporting part extends outwards from the auxiliary supporting plate (22), a bearing (23) is installed on the supporting part, the driven wheel (42) is fixedly installed at the upper end of the rotating shaft (24), and the lower end of the rotating shaft (24) is installed on the bearing (23); the dispersing platform (2) comprises a horizontal plate with a material receiving surface (21), a first vertical plate and a second vertical plate, and the first vertical plate and the second vertical plate are fixedly arranged on two opposite edges of the horizontal plate respectively; the sliding block (41) is positioned in a groove formed by the first vertical plate, the second vertical plate and the horizontal plate, and the sliding block (41) is in clearance sliding fit with the first vertical plate, the sliding block (41) is in clearance sliding fit with the second vertical plate and the sliding block (41) is in clearance sliding fit with the horizontal plate;
the dispersing platform (2) further comprises a splash guard (25), the discharge hole (11) is positioned in the splash guard (25), and a slide block inlet and outlet (251) is formed in the side wall, adjacent to the slide block (41), of the splash guard (25); the top of the splash guard (25) is sealed, and the side wall of the splash guard (25) is respectively connected with the first vertical plate and the second vertical plate in a sealing manner; a sealing plate (26) is arranged at the second end of the dispersing platform (2), the bottom edge of the sealing plate (26) is connected with the horizontal plate in a sealing manner, the top edge of the sealing plate (26) is connected with the side wall of the splash guard (25) in a sealing manner, and two vertical edges of the sealing plate (26) are respectively connected with the first vertical plate and the second vertical plate in a sealing manner; the upper end edge of the feeding barrel (3) is hermetically connected with the bottom plate surface of the horizontal plate, and the horizontal plate is provided with a blanking hole communicated with the feeding port (31);
a blast pipe (32) and an inclined screening mechanism (6) are mounted on the lower charging barrel (3), one end of the blast pipe (32) is in fluid communication with an air outlet of the air blower, and the other end of the blast pipe (32) is in fluid communication with the lower charging barrel (3); a screening inlet (61) of the inclined screening mechanism (6) is opposite to an air outlet of the blast pipe (32), and the screening inlet (61) is communicated with the fluid of the charging barrel (3);
the inclined screening mechanism (6) comprises a screening bin, a first screening net (62) and a second screening net (63) which are obliquely arranged in the screening bin respectively, the first screening net (62) is arranged above the second screening net (63), and the included angles between the net surfaces of the first screening net (62) and the second screening net (63) and the horizontal plane are both 30-60 degrees; a large-particle-size biochar falling channel is formed between the first screening net (62) and the side wall of the top of the screening bin, a medium-particle-size biochar falling channel is formed between the first screening net (62) and the second screening net (63), and a small-particle-size biochar falling channel is formed between the second screening net (63) and the side wall of the bottom of the screening bin; the large-particle-size biochar falling channel is communicated with the screening inlet (61), the medium-particle-size biochar falling channel is communicated with the large-particle-size biochar falling channel through meshes on the first screening net (62), and the small-particle-size biochar falling channel is communicated with the medium-particle-size biochar falling channel through the second screening net (63); the mesh number of the first screening net (62) is less than 16 meshes, and the mesh number of the second screening net (63) is 40-60 meshes; the biochar preparation equipment for sewage treatment further comprises a biochar dispersing mechanism (7), wherein the biochar dispersing mechanism (7) comprises a half gear (71), a first rack (72), a second rack (73), an upper reciprocating positioning rod (74), a lower reciprocating positioning rod (75), a pressing plate (76) and an installation box (77); -the half-gear (71), the first rack (72) and the second rack (73) are all located inside the mounting box (77) and the half-gear (71) is located between the first rack (72) and the second rack (73), the first rack (72) and the second rack (73) being parallel to each other and all being able to mesh with the half-gear (71); the half gear (71) is mounted on a side vertical wall of the mounting box (77) through a pressure dispersion wheel shaft (78) and a bearing, the upper end of the first rack (72) and the upper end of the second rack (73) are fixedly connected with the lower end of the upper reciprocating positioning rod (74) through upper connecting rods respectively, and the upper end of the upper reciprocating positioning rod (74) penetrates through a positioning hole in the side wall of the top of the mounting box (77) and extends out of the mounting box (77); the lower end of the first rack (72) and the lower end of the second rack (73) are respectively fixedly connected with the upper end of the lower reciprocating positioning rod (75) through lower connecting rods, and the lower end of the lower reciprocating positioning rod (75) penetrates through a positioning hole in the side wall of the bottom of the mounting box (77) and is fixedly connected with a pressing plate (76) located on the outer side of the mounting box (77); the press plate (76) is located directly above the material receiving surface (21) at the second end of the dispersion platform (2) and in the horizontal direction: the pressing plate (76) is positioned between the discharge hole (11) and the feed opening (31);
the three biochar dispersing units are sequentially distributed from top to bottom, and the biochar pressure dispersing mechanism (7) is arranged between the penultimate biochar dispersing unit and the penultimate biochar dispersing unit; the lower end of the lower charging barrel (3) of the upper layer biochar dispersing unit is positioned above the material bearing surface (21) of the lower layer biochar dispersing unit; the driving mechanism (5) comprises a motor (51), a driving shaft (52), a driving wheel (53), a belt (54) and a driving unit of the crushing mechanism; the driving wheel (53) is fixedly arranged on the driving shaft (52), the motor (51) drives the driving shaft (52) and the driving wheel (53) to synchronously rotate together, the driven wheel (42) of each biochar dispersing unit is respectively in driving connection with a different driving wheel (53) through a different belt (54), the crushing mechanism driving unit comprises a reversing driven wheel (55), a first bevel gear (56) and a second bevel gear (57), the reversing driven wheel (55) and the first bevel gear (56) are coaxially and relatively fixedly arranged, and the second bevel gear (57) is arranged at one end of the crushing wheel shaft (78) which is positioned outside the mounting box (77); the reversing driven wheel (55) is in driving connection with the driving wheel (53) through the belt (54), and the reversing driven wheel (55) drives the second bevel gear (57) and the half gear (71) to rotate coaxially through the first bevel gear (56).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010573159.8A CN111689488B (en) | 2020-06-22 | 2020-06-22 | Process and equipment for preparing biochar for sewage treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010573159.8A CN111689488B (en) | 2020-06-22 | 2020-06-22 | Process and equipment for preparing biochar for sewage treatment |
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| Publication Number | Publication Date |
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| CN111689488A CN111689488A (en) | 2020-09-22 |
| CN111689488B true CN111689488B (en) | 2021-09-07 |
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| CN202010573159.8A Active CN111689488B (en) | 2020-06-22 | 2020-06-22 | Process and equipment for preparing biochar for sewage treatment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2322279B1 (en) * | 2009-11-17 | 2016-05-11 | Biohyst Overseas Sagl | Biomass crushing and separating device |
| CN202621464U (en) * | 2012-04-17 | 2012-12-26 | 福建铁拓机械有限公司 | Airflow and vibration combination dry sand grading screening system in dry-mixed mortar production line |
| CN206104362U (en) * | 2016-09-19 | 2017-04-19 | 重庆冠虹环保能源股份有限公司 | Living beings carbon system for soil restoration agent raw materials select separately system |
| CN106334617A (en) * | 2016-10-15 | 2017-01-18 | 马琳 | Floor-type screening and crushing device |
| CN206868402U (en) * | 2017-06-30 | 2018-01-12 | 宁夏翔泰新材料科技有限公司 | Activated carbon Multi-stage crushing plant |
| CN108097430B (en) * | 2017-12-18 | 2019-08-13 | 南通惠农生物有机肥有限公司 | A kind of organic fertilizer screening plant of low percentage of damage |
| CN210481184U (en) * | 2019-07-09 | 2020-05-08 | 河南工程学院 | Biomass modification system for sludge dewatering |
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