阅读说明：本技术 造纸废渣能源化利用方法及装置 (Method and device for recycling papermaking waste residues ) 是由 段国生 严振国 毛忠信 章维明 陈伦 吴卫华 于 2020-12-26 设计创作，主要内容包括：本发明涉及造纸废渣利用技术领域,尤其涉及一种造纸废渣能源化利用方法,包括以下步骤：将白泥与发酵辅料混合搅拌形成浆料；将浆料制作为特定形状的发酵料；对发酵料进行发酵；对发酵完成的物料进行堆肥化处理,形成所需肥料。造纸白泥中除含有大量的细小纤维外,还含有丰富的有机质、N、P、K等养分以及微量元素,造纸白泥的重金属含量比城市污泥的低,不会导致重金属污染,所以造纸白泥是一种良好的肥料资源,通过本发明使得作为造纸废渣的白泥得到有效的利用,同时堆肥是一个腐殖化的过程,有机质在微生物的作用下进行矿化分解,同时合成新的更稳定的有机物。同时,本发明中还请求保护一种造纸废渣能源化利用装置,具有同样的技术效果。(The invention relates to the technical field of papermaking waste residue utilization, in particular to a papermaking waste residue energy utilization method, which comprises the following steps: mixing and stirring the white mud and the fermentation auxiliary materials to form slurry; preparing the slurry into a fermentation material with a specific shape; fermenting the fermentation material; composting the fermented material to form the fertilizer. The papermaking white mud contains a large amount of fine fibers, and also contains rich organic matters, nutrients such as N, P, K and trace elements, the heavy metal content of the papermaking white mud is lower than that of urban sludge, and heavy metal pollution cannot be caused, so the papermaking white mud is a good fertilizer resource. Meanwhile, the invention also discloses a papermaking waste residue energy utilization device, which has the same technical effect.)

1. The method for recycling the papermaking waste residue is characterized by comprising the following steps:

mixing and stirring the white mud and the fermentation auxiliary materials to form slurry;

preparing the slurry into a fermentation material with a specific shape;

fermenting the fermented material;

composting the fermented material to form the fertilizer.

2. The energy utilization device for papermaking waste residue is characterized by being used for manufacturing, transmitting and fermenting the fermentation material in claim 1 and comprising:

the rubber belt (1) is annularly arranged, a plurality of strip-shaped bulges (11) penetrating through the width direction are uniformly distributed on the outer surface of the rubber belt (1), and the rubber belt (1) circularly and repeatedly rotates along the distribution direction of the strip-shaped bulges (11);

the supporting box body (2) comprises a top plate (21) and a bottom plate (22) which are horizontally arranged and two curved side plates (23) which are symmetrically arranged, the top plate (21), the bottom plate (22) and the two side plates (23) are enclosed to form an annular structure for supporting the rubber belt (1), wherein two sides of the annular structure are respectively provided with a blocking plate (24) to form a cavity structure;

the extrusion die (3) comprises two fixed die plates (31), two movable die plates (32) and an extrusion plate (33); the two fixed templates (31) are respectively and longitudinally arranged on two sides of the rubber belt (1) and are attached to the rubber belt (1), the two movable templates (32) are arranged at the top of the rubber belt (1) and are attached to the fixed templates (31) to move up and down, when the two movable templates move to be attached to the rubber belt (1), a material containing space is formed among the fixed templates (31), the movable templates (32) and the rubber belt (1), the extrusion plate (33) horizontally extrudes slurry in the material containing space, and the distance from the top of the extruded material to the bottom of the movable templates (32) is 1.1-2 times of the height of the strip-shaped protrusions (11);

the rubber belt conveyor also comprises a feeding device (4) for conveying the materials falling from the rubber belt (1);

and the fermentation box (5) is used for receiving the materials from the feeding device (4) and fermenting for later use.

3. The papermaking waste residue energy utilization device according to claim 2, characterized in that a plurality of through holes (12) are uniformly distributed between two adjacent strip-shaped protrusions (11), the top plate (21) is of a filter screen structure, and a pipe body (25) communicated with the outside is arranged on one of the blocking plates (24) and is used for communicating the inner space and the outer space of the cavity structure.

4. The papermaking waste residue energy utilization device according to claim 2, characterized in that a groove (13) is formed in the side surface of the rubber belt (1), and a sealing tape is horizontally arranged on the fixed template (31) and embedded in the groove (13).

5. The energy utilization device of papermaking waste residues according to claim 2 or 3, characterized in that the fixed die plate (31) is provided with a longitudinal slot (31a) for wrapping the edge of the movable die plate (32) and guiding the movable die plate (32).

6. The papermaking waste residue energy utilization device according to claim 3, characterized by further comprising a power device (6) comprising a driving shaft (61) and a driving wheel (62);

the driving shaft (61) drives the driving wheel (62) to rotate, a plurality of driving teeth (62a) are arranged on the periphery of the driving wheel (62), and the driving teeth (62a) are meshed with the strip-shaped bulges (11) to drive the rubber belt (1) to rotate.

7. The papermaking waste residue energy utilization device according to claim 2, characterized in that the feeding device (4) comprises a horizontal conveying belt (41), a longitudinal conveying device (42) and a conveying disc (43);

the horizontal conveying belt (41) is arranged outside the fermentation box (5) and used for supporting the conveying disc (43), the conveying disc (43) is used for carrying materials from the rubber belt (1), and the conveying disc (43) enters the fermentation box (5) under the driving of the horizontal conveying belt (41);

the longitudinal conveying device (42) is arranged in the fermentation box (5) and is used for longitudinally conveying the conveying disc (43);

the surface of the horizontal conveying belt is provided with a plurality of guide belts (41a) parallel to the strip-shaped protrusions (11), the bottom of the conveying disc (43) is provided with guide grooves (43a) matched with the guide belts (41a), and the horizontal conveying belt (41) is matched with the guide grooves (43a) to realize the conveying of the conveying disc (43);

the longitudinal conveying device (42) comprises two groups of conveying belts which are symmetrically arranged, a plurality of horizontal convex edges (42a) for supporting the conveying disc (43) are uniformly distributed on the surfaces of the conveying belts, and the conveying disc (43) is longitudinally conveyed through longitudinal circulating reciprocating rotation.

8. The papermaking waste residue energy utilization device as claimed in claim 7, characterized in that the bottom of the conveying disc (43) is of a plate body structure with equal thickness.

9. The papermaking waste residue energy utilization device according to claim 7, characterized in that the fermentation box (5) comprises a housing (51) and a heating device, the heating device is installed in the housing (51) and is used for heating the fermentation material in the conveying disc (43), and an upper door body (52) for the conveying disc (43) to enter and a lower door body (53) for the conveying disc (43) to move out are respectively arranged on the housing (51).

10. The papermaking waste residue energy utilization device according to claim 9, characterized in that the upper door body (52) is attached to the inner wall of the housing (51) and is rotatably connected with the housing (51) through a horizontal shaft; the lower door body (53) is attached to the outer wall of the shell (51) and is rotatably connected with the shell (51) through a horizontal shaft.

Technical Field

The invention relates to the technical field of papermaking waste residue utilization, in particular to a method and a device for energy utilization of papermaking waste residue.

Background

A large amount of waste residue, namely white mud, is generated in a causticizing process of a paper mill, the annual production amount of the white mud for papermaking in China is about 300 ten thousand tons, and the waste residue for papermaking does not have an effective resource utilization way at present. The white mud produces sewage in the natural sedimentation process, forms a large amount of dust after air-drying, causes serious pollution to the environment, and simultaneously the landfill occupies a large amount of land. The main component of the white mud is calcium carbonate, and if the white mud is discarded, the resource waste is caused, so that how to effectively utilize the white mud as resources is urgent.

In view of the above-mentioned defects, the inventor of the present invention has made a study and innovation based on the practical experience and professional knowledge of designing and manufacturing such products for many years, and by using the theory, a method and a device for energy utilization of papermaking waste residue are created, so as to make the method and the device more practical.

Disclosure of Invention

The invention provides a method for recycling papermaking waste residue, which effectively solves the problems in the background art, and simultaneously, the invention also requests to protect a device for realizing the method for recycling the papermaking waste residue, and the method has the same technical effect.

In order to achieve the purpose, the invention adopts the technical scheme that:

the method for recycling the papermaking waste residue comprises the following steps:

mixing and stirring the white mud and the fermentation auxiliary materials to form slurry;

preparing the slurry into a fermentation material with a specific shape;

fermenting the fermented material;

composting the fermented material to form the fertilizer.

Papermaking waste residue energy utilization device for carry out preparation, transmission and fermentation to above-mentioned fermented material, include:

the rubber belt is annularly arranged, a plurality of strip-shaped bulges penetrating through the width direction are uniformly distributed on the outer surface of the rubber belt, and the rubber belt circularly and repeatedly rotates along the distribution direction of the strip-shaped bulges;

the supporting box body comprises a top plate, a bottom plate and two curved side plates, wherein the top plate and the bottom plate are horizontally arranged, the two curved side plates are symmetrically arranged, the top plate, the bottom plate and the two side plates are enclosed to form an annular structure for supporting the rubber belt, and two sides of the annular structure are respectively provided with a blocking plate to form a cavity structure;

the extrusion die comprises two fixed die plates, two movable die plates and an extrusion plate; the two fixed templates are respectively longitudinally arranged on two sides of the rubber belt and are attached to the rubber belt, the two movable templates are arranged at the top of the rubber belt and are attached to the fixed templates to move up and down, when the movable templates move to be attached to the rubber belt, a material containing space is formed among the fixed templates, the movable templates and the rubber belt, the extrusion plate horizontally extrudes slurry in the material containing space, and the distance between the top of the extruded material and the bottom of the movable templates is 1.1-2 times of the height of the strip-shaped protrusion;

the feeding device is used for conveying the materials falling from the rubber belt;

and the fermentation box receives the materials from the feeding device and performs fermentation for later use.

Further, adjacent two evenly distributed has a plurality of perforating holes between the bar arch, the roof is the filter screen structure, one of them be provided with the body with outside UNICOM on the closure plate for the UNICOM space inside and outside the cavity structures.

Further, the rubber belt is characterized in that a groove is formed in the side face of the rubber belt, a sealing belt is arranged on the fixed template in the horizontal direction, and the sealing belt is embedded into the groove.

Further, the movable mould plate is characterized in that the fixed mould plate is provided with a longitudinal groove body, the edge of the movable mould plate is coated, and the movable mould plate is guided.

Further, the device is characterized by also comprising a power device, a driving shaft and a driving wheel;

the driving shaft drives the driving wheel to rotate, a plurality of driving teeth are arranged on the periphery of the driving wheel, and the driving teeth are meshed with the strip-shaped bulges to drive the rubber belt to rotate.

Further, the feeding device comprises a horizontal conveying belt, a longitudinal conveying device and a conveying disc;

the horizontal conveying belt is arranged outside the fermentation box and used for supporting the conveying disc, the conveying disc is used for carrying materials from the rubber belt, and the conveying disc enters the fermentation box under the driving of the horizontal conveying belt;

the longitudinal conveying device is arranged in the fermentation box and is used for longitudinally conveying the conveying disc;

the surface of the horizontal conveying belt is provided with a plurality of guide belts parallel to the strip-shaped bulges, the bottom of the conveying disc is provided with a guide groove matched with the guide belts, and the horizontal conveying belt is matched with the guide grooves to realize the transmission of the conveying disc;

the longitudinal conveying device comprises two groups of conveying belts which are symmetrically arranged, a plurality of horizontal convex edges for supporting the conveying disc are uniformly distributed on the surfaces of the conveying belts, and the conveying disc is longitudinally conveyed through longitudinal circulating reciprocating rotation.

Furthermore, the bottom of the conveying disc is of a plate body structure with equal thickness.

Therefore, when the guide groove is formed outside, the corresponding wavy structural form is formed inside, and the structural form can enable fermentation materials to obtain a more dispersed state and obtain more gaps, so that the fermentation effect is effectively improved.

Furthermore, the fermentation box comprises a shell and a heating device, wherein the heating device is arranged in the shell and is used for heating the fermentation material in the conveying disc, and the shell is respectively provided with an upper door body for the conveying disc to enter and a lower door body for the conveying disc to move out.

Furthermore, the upper door body is attached to the inner wall of the shell and is rotatably connected with the shell through a horizontal shaft; the lower door body is attached to the outer wall of the shell and is rotatably connected with the shell through a horizontal shaft.

Through the technical scheme, the invention has the beneficial effects that:

according to the invention, rich organic matters, nutrients such as N, P, K and trace elements contained in the papermaking white mud are utilized as a good fertilizer resource, the papermaking white mud is effectively utilized as papermaking waste residue, composting is a humification process, the organic matters are mineralized and decomposed under the action of microorganisms, and new and more stable organic matters are synthesized, the activity of heavy metals in waste is passivated in the process, the biological effectiveness of the waste is effectively reduced, and the comprehensive utilization of the papermaking sludge composting is reasonable and scientific.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a flow chart of a method for energy utilization of papermaking waste residues;

FIG. 2 is a schematic view of a combination of a rubber belt, a support box and an extrusion die;

FIG. 3 is a schematic structural view of a containing space formed by the rubber belt, the fixed die plate and the movable die plate;

FIG. 4 is a schematic view (including a partial enlargement) of the combination of the rubber belt, the support box and the power unit;

FIG. 5 is a schematic illustration of the formation of a fermentation charge by rotation of a rubber band;

FIG. 6 is a schematic diagram of a transfer tray receiving process;

FIG. 7 is a schematic view of the combined structure of a feeding device and a fermentation box;

FIG. 8 is a schematic structural view of a support box;

FIG. 9 is a partial enlarged view of the fixed die plate at the location of the slot;

FIG. 10 is a schematic view showing a combination of a fermentation tank and a longitudinal conveyor;

FIG. 11 is a schematic view of the tray holding the fermentation material;

description of the drawings:

1. a rubber belt; 11. a strip-shaped bulge; 12. a through hole; 13. a groove; 2. supporting the box body; 21. a top plate; 22. a base plate; 23. a side plate; 24. a blocking plate; 25. a pipe body; 3. extruding the die; 31. fixing the template; 31a, a trough body; 32. moving the template; 33. a pressing plate; 4. a feeding device; 41. a horizontal conveyor belt; 41a, a guide belt; 42. a longitudinal conveying device; 42a, a convex edge; 43. a transfer tray; 43a, a guide groove; 5. a fermentation box; 51. a housing; 52. an upper door body; 53. a lower door body; 6. a power plant; 61. a drive shaft; 62. a driving wheel; 62a, gear teeth.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1, the method for recycling the papermaking waste residue comprises the following steps:

s1: mixing and stirring the white mud and the fermentation auxiliary materials to form slurry;

s2: preparing the slurry into a fermentation material with a specific shape;

s3: fermenting the fermentation material;

s4: composting the fermented material to form the fertilizer.

According to the invention, rich organic matters, nutrients such as N, P, K and trace elements contained in the papermaking white mud are utilized as a good fertilizer resource, the papermaking white mud is effectively utilized as papermaking waste residue, composting is a humification process, the organic matters are mineralized and decomposed under the action of microorganisms, and new and more stable organic matters are synthesized, the activity of heavy metals in waste is passivated in the process, the biological effectiveness of the waste is effectively reduced, and the comprehensive utilization of the papermaking sludge composting is reasonable and scientific.

As shown in fig. 2 to 11, the apparatus for recycling energy of papermaking waste residue is used for manufacturing, transporting and fermenting the fermentation material, and includes: the rubber belt 1 is annularly arranged, a plurality of strip-shaped bulges 11 penetrating through the width direction are uniformly distributed on the outer surface of the rubber belt 1, and the rubber belt 1 circularly and repeatedly rotates along the distribution direction of the strip-shaped bulges 11; the supporting box body 2 comprises a top plate 21 and a bottom plate 22 which are horizontally arranged and two curved side plates 23 which are symmetrically arranged, the top plate 21, the bottom plate 22 and the two side plates 23 are enclosed to form an annular structure for supporting the rubber belt 1, wherein two sides of the annular structure are respectively provided with a blocking plate 24 to form a cavity structure; an extrusion die 3 including two fixed die plates 31, two movable die plates 32, and an extrusion plate 33; the two fixed templates 31 are respectively and longitudinally arranged on two sides of the rubber belt 1 and are attached to the rubber belt 1, the two movable templates 32 are arranged at the top of the rubber belt 1 and are attached to the fixed templates 31 to move up and down, when the fixed templates 31, the movable templates 32 and the rubber belt 1 are moved to be attached to the rubber belt 1, a material containing space is formed among the fixed templates 31, the movable templates 32 and the rubber belt 1, the extrusion plates 33 horizontally extrude slurry in the material containing space, and the distance between the top of the extruded material and the bottom of the movable templates 32 is 1.1-2 times of the height of the strip-shaped bulges 11; the feeding device 4 is used for conveying the materials falling from the rubber belt 1; and the fermentation box 5 is used for receiving the materials from the feeding device 4 and fermenting for later use.

In the working process, the preparation process of the fermented material by the slurry formed by mixing and stirring the white mud and the fermentation auxiliary materials is as follows:

a1: when the rubber belt 1 rotates to a set position, the rubber belt 1 is controlled to stop moving, and the movable template 32 is made to move downwards to a position attached to the rubber belt 1, so that a material containing space is formed;

a2: discharging a set amount of slurry into the accommodating space, and extruding the slurry from top to bottom through the extrusion plate 33 to enable the bottom of the slurry to adapt to the shape of the rubber belt 1;

a3: controlling the movable die plate 32 and the extrusion plate 33 to move upwards after the slurry is formed, so that the blocking of the strip-shaped protrusions 11 and the material is released;

a4: controlling the rubber belt 1 to continue rotating to drive the material to move towards the feeding device 4, wherein the connection parts in the middle can be broken one by one to form strip-shaped fermented materials to fall freely in the material conveying process through the arrangement of the sizes H and A shown in fig. 5, namely H is 1.1-2A, and particularly, see fig. 6; the fermented materials are evenly received by the feeding device 4 and sent into the fermentation box 5 for fermentation.

As the preferred of above-mentioned embodiment, in order to guarantee that white mud can be more smoothly and even shaping at the in-process that is extruded, evenly distributed has a plurality of perforating holes 12 between two adjacent bar arch 11, and roof 21 is the filter screen structure, is provided with the body 25 with outside UNICOM on one of them closure plate 24 for the inner and outer space of UNICOM cavity structures.

Referring to fig. 1 and 8, through the connectivity of through-hole 12 for gas in the holding space can discharge smoothly, and the stability of supporting rubber tape 1 has been guaranteed on the one hand in the setting of filter screen structure, and on the other hand has also played ventilative effect, and the gas in the cavity structures can be discharged from body 25. In the preferred embodiment, the through holes 12 and the screen structure have another function of preheating the extruded fermented material by supplying hot air into the cavity structure, so as to pre-shape the fermented material, thereby obtaining a fermented material with a more stable shape.

Preferably, as for the above embodiment, the side surface of the rubber belt 1 is provided with a groove 13, the fixing template 31 is provided with a sealing strip along the horizontal direction, and the sealing strip is embedded in the groove 13 to ensure the sealing performance of the joint between the fixing template 31 and the rubber belt 1, wherein the fixing template 31 can be fixedly connected with the blocking plate 24 through a connecting piece.

The fixed die plate 31 is provided with a longitudinal groove 31a, the edge of the movable die plate 32 is coated, and the movable die plate 32 is guided, so that the moving direction of the movable die plate 32 is more stable, and meanwhile, the sealing performance of the accommodating space can be improved. In the implementation process, the power for driving the movable mold plate 32 and the extrusion plate 33 to move can be realized by using fluid power such as an air cylinder or a hydraulic cylinder, or by using a combination of a motor and a screw assembly, and the like, and the invention is within the protection scope of the invention.

As a preference of the above embodiment, the power device 6 is further provided, and comprises a driving shaft 61 and a transmission wheel 62; the driving shaft 61 drives the driving wheel 62 to rotate, a plurality of driving teeth 62a are arranged on the periphery of the driving wheel 62, and the driving teeth 62a are meshed with the strip-shaped protrusions 11 to drive the rubber belt 1 to rotate. The power unit 6 is configured to be installed in conformity with the support case 2 so as to ensure the transmission of power to the outside of the rubber belt 1, and the strip-shaped protrusion 11 forms the slurry on one side and transmits power on the other side.

Wherein, the feeding device 4 comprises a horizontal conveying belt 41, a longitudinal conveying device 42 and a conveying disc 43; the horizontal conveying belt 41 is arranged outside the fermentation box 5 and used for supporting the conveying disc 43, the conveying disc 43 is used for carrying materials from the rubber belt 1, and the conveying disc 43 enters the fermentation box 5 under the driving of the horizontal conveying belt 41; the longitudinal conveying device 42 is arranged in the fermentation box 5 and is used for longitudinally conveying the conveying disc 43; the surface of the horizontal conveying belt 41 is provided with a plurality of guide belts 41a parallel to the strip-shaped protrusions 11, the bottom of the conveying disc 43 is provided with a guide groove 43a matched with the guide belts 41a, and the horizontal conveying belt 41 is matched with the guide groove 43a to realize the transmission of the conveying disc 43; the longitudinal conveying device 42 comprises two groups of conveying belts which are symmetrically arranged, a plurality of horizontal convex edges 42a for supporting the conveying disc 43 are uniformly distributed on the surfaces of the conveying belts, and the longitudinal conveying of the conveying disc 43 is realized through the longitudinal cyclic reciprocating rotation.

The conveying disc 43 can be stably conveyed forwards through the matching of the guide belt 41a and the guide groove 43a, when the conveying disc 43 moves to the tail end of the horizontal conveying belt 41, referring to fig. 7, the conveying disc 43 naturally falls into the fermentation box 5 through gravity, the conveying disc 43 can be supported by the convex edge 42a one by one through the control of the longitudinal conveying device 42, and the adjustment of the upper position and the lower position is realized in the subsequent rotation process of the longitudinal conveying belt, so that the fermentation process is fully participated.

In order to improve the fermentation effect, the bottom of the conveying disc 43 is a plate structure with the same thickness, so that when the guide groove 43a is formed on the outside, a corresponding wavy structural form is formed inside, see fig. 11, and this structural form can make the fermented materials obtain a more dispersed state and obtain more gaps, thereby effectively improving the fermentation effect.

As a preferred embodiment of the above embodiment, the fermentation box 5 includes a housing 51 and a heating device, the heating device is installed in the housing 51 and heats the fermentation material in the conveying tray 43, and the housing 51 is respectively provided with an upper door 52 for the conveying tray 43 to enter and a lower door 53 for the conveying tray 43 to move out. The heating device can be a resistance wire heating device, and the fermentation effect is controlled through reasonable temperature control. The upper door body 52 is attached to the inner wall of the shell 51 and is rotatably connected with the shell 51 through a horizontal shaft; the lower door body 53 is attached to the outer wall of the casing 51 and is rotatably connected to the casing 51 through a horizontal shaft. After the upper door body 52 and the lower door body 53 are used, the natural falling can be realized through gravity, the relative sealing property in the shell 51 is ensured, and the heat preservation effect is improved. For the movement of the transfer tray 43 out of the housing 51, a material transfer structure, such as an air cylinder, may be provided in the housing 51 to push and feed the transfer tray 43.

It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.