CN111014253B - Solid-liquid mixed material lifting pipeline - Google Patents
Solid-liquid mixed material lifting pipeline Download PDFInfo
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- CN111014253B CN111014253B CN201911366568.4A CN201911366568A CN111014253B CN 111014253 B CN111014253 B CN 111014253B CN 201911366568 A CN201911366568 A CN 201911366568A CN 111014253 B CN111014253 B CN 111014253B
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- 239000007788 liquid Substances 0.000 title claims abstract description 68
- 230000007246 mechanism Effects 0.000 claims abstract description 73
- 238000007789 sealing Methods 0.000 claims abstract description 25
- 239000000203 mixture Substances 0.000 claims description 4
- 238000000855 fermentation Methods 0.000 abstract description 53
- 230000004151 fermentation Effects 0.000 abstract description 53
- 239000002028 Biomass Substances 0.000 abstract description 46
- 238000003763 carbonization Methods 0.000 abstract description 38
- 238000006243 chemical reaction Methods 0.000 description 39
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 20
- 229910052799 carbon Inorganic materials 0.000 description 20
- 239000007787 solid Substances 0.000 description 9
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000002378 acidificating effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000004021 humic acid Substances 0.000 description 2
- 239000011344 liquid material Substances 0.000 description 2
- 239000010871 livestock manure Substances 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
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- 239000002253 acid Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010806 kitchen waste Substances 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/80—Destroying solid waste or transforming solid waste into something useful or harmless involving an extraction step
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a lifting pipeline for solid-liquid mixed materials, belongs to the technical field of hydrothermal carbonization, and solves the problem that the existing equipment cannot lift the materials in a solid-liquid mixed state. The solid-liquid mixed material lifting pipeline comprises a material lifting mechanism, the material lifting mechanism comprises 2 half square pipe mechanisms, and each half square pipe mechanism comprises a half square pipe and a rotatable baffle; the 2 half square pipes can be spliced into a square pipe and can slide mutually along the material flowing direction; the rotatable baffle is hinged with the whole side wall of the half square pipe; the rotatable baffle can rotate towards the material flowing direction and is in sealing contact with the half side wall of the half square pipe; the rotatable baffle is a rectangular plate, the length of the long edge of the rectangular plate is larger than the length of the side of the cross section of the square pipe, and the short edge of the rectangular plate is equal to the length of the side of the cross section of the square pipe. The invention can convey the solid-liquid mixed material from the lower part to the higher part in a closed manner, so that the biomass can be conveyed to the top of the fermentation tank from the bottom of the crusher, and the treatment of hydrothermal carbonization of the biomass is facilitated.
Description
Technical Field
The invention relates to the technical field of hydrothermal carbonization, in particular to a solid-liquid mixed material lifting pipeline.
Background
Biomass is generally all organic substances capable of growing, biomass waste can be recycled by hydrothermal carbonization, and hydrothermal carbon with high energy density is prepared for use as fuel. However, biomass waste is of a wide variety and the physical properties of biomass vary widely between different varieties. For example, agricultural plant biomass generally comprises straws and livestock manure, has high carbon content and low moisture content, and is in a solid state; the domestic and meal garbage has high water content and is in a liquid or solid-liquid mixed state; the sludge garbage generally contains a certain amount of microorganisms, has high viscosity and is in a solid-liquid mixed state. Due to the difference of physical properties of the biomass wastes, corresponding classification is needed to perform hydrothermal carbonization when the biomass wastes are recycled, so that the recycling cost and difficulty of the biomass wastes are greatly increased.
The existing processing modes include two types:
firstly, the crusher is arranged at a high position, and the fermentation tank is arranged at a low position, so that the crushed biomass can be directly conveyed into the fermentation tank through a pipeline, but more height space is occupied, or a special high platform is required to be arranged to install the crusher, or a special pit is required to be arranged to install the fermentation tank, the structure is complex, and the arrangement of the whole system is not facilitated;
secondly, because the lifting of the solid-liquid mixed biomass cannot be realized at the same time, only the solid-liquid separation of the biomass can be performed firstly, and then the hydrothermal carbonization of the solid biomass and the hydrothermal carbonization of the liquid biomass can be performed respectively by using the corresponding devices with the crusher and the fermentation tank on the same horizontal plane, but because two sets of devices are required to perform the hydrothermal carbonization respectively, more space and resources are required, and the treatment efficiency is lower.
Disclosure of Invention
In view of the above analysis, the present invention aims to provide a lifting pipeline for solid-liquid mixed materials, which is used to solve the problem that the existing equipment cannot lift the materials in a solid-liquid mixed state.
The purpose of the invention is mainly realized by the following technical scheme:
in the technical scheme of the invention, the solid-liquid mixed material lifting pipeline comprises a material lifting mechanism, wherein the material lifting mechanism comprises 2 half square pipe mechanisms, and each half square pipe mechanism comprises a half square pipe and a rotatable baffle; the 2 half square pipes can be spliced into a square pipe and can slide mutually along the material flowing direction; the rotatable baffle is hinged with the whole side wall of the half square pipe; the rotatable baffle can rotate towards the material flowing direction and is in sealing contact with the half side wall of the half square pipe; the rotatable baffle is a rectangular plate, the length of the long edge of the rectangular plate is larger than the length of the side of the cross section of the square pipe, and the short edge of the rectangular plate is equal to the length of the side of the cross section of the square pipe.
In the technical scheme of the invention, the material lifting mechanism also comprises a square tube frame; the half square tube mechanism is arranged on the square tube frame; the square pipe frame can be used for splicing 2 half square pipes into a square pipe, and the square pipe is circumferentially limited.
In the technical scheme of the invention, the half square tube mechanism further comprises a motor, and the motor is fixedly arranged on the square tube frame; the motor is used for driving the half square pipe to reciprocate along the axial direction of the solid-liquid mixed material lifting pipeline.
In the technical scheme of the invention, a half square pipe is arranged on a square pipe frame through a square pipe slide rail;
both ends of the square tube slide rail are provided with stopping parts.
In the technical scheme of the invention, the edges of the half side walls of the two half square pipes are connected through a sealing sliding structure;
the sealing sliding structure comprises a strip-shaped sliding chute and a strip-shaped sliding block, the strip-shaped sliding block is provided with a strip-shaped limiting part, and the strip-shaped limiting part can be embedded into the strip-shaped sliding chute;
the strip-shaped limiting part is made of wear-resistant rubber.
In the technical scheme of the invention, the motor drives the half square tube to reciprocate through the driving structure;
the driving structure is one of a ball screw pair, a hydraulic cylinder and a gear rack.
In the technical scheme of the invention, the periphery of the rotatable baffle is provided with the sealing strips, and the rotatable baffle and the inner walls of the 2 half square pipes are sealed.
In the technical scheme of the invention, the solid-liquid mixed material lifting pipeline also comprises a sleeve;
the two ends of the sleeve are provided with rigid connectors, and the middle of the sleeve is provided with a flexible pipeline;
the connector can be sleeved at the end part of the material lifting mechanism.
In the technical scheme of the invention, the solid-liquid mixed material lifting pipeline is provided with N material lifting mechanisms and N +1 sleeves, wherein N is a positive integer;
the sleeve and the material lifting mechanism are alternately connected.
In the technical scheme of the invention, the cross section of the connector is square; a sealing ring is arranged between the connector and the square tube.
The technical scheme of the invention can at least realize one of the following effects:
1. according to the invention, the broken solid-liquid mixed material can be conveyed from a low position to a high position in a closed manner by the material lifting mechanism, so that the broken solid-liquid mixed biomass can be conveyed from the bottom of the breaker to the top of the fermentation tank, the treatment of biomass hydrothermal carbonization is facilitated, and the treatment efficiency is obviously improved;
2. the direction of the whole transportation channel can be adjusted through the sleeve between the material lifting mechanisms, so that the application range of the invention is widened;
3. the lifting device is simple in structure and automatic in operation, and lifting and transportation of solid-liquid mixed materials which are difficult to realize in the prior art are realized.
In the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.
FIG. 1 is a schematic view of the overall structure of a hydrothermal carbonization integrated process device using an embodiment of the invention;
FIG. 2 is a partial cross-sectional view of a material lifting mechanism in an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a material lifting mechanism in an embodiment of the present invention;
FIG. 4 is a schematic longitudinal sectional view of a material lifting mechanism according to an embodiment of the present invention;
FIG. 5 is a first schematic diagram of a first material lifting mechanism according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a material lifting mechanism in the embodiment of the invention.
Reference numerals:
1-a crusher; 2-a fermentation tank; 3-high pressure reactor; 4-a material lifting mechanism; 5-sleeving a pipe; a 6-four-way structure; 7-half square tube; 8-a rotatable baffle; 9-square tube frame.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and which together with the embodiments of the invention serve to explain the principles of the invention and not to limit its scope.
In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the term "connected" should be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection, which may be a mechanical connection, an electrical connection, which may be a direct connection, or an indirect connection via an intermediate medium. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The terms "top," "bottom," "above … …," "below," and "on … …" as used throughout the description are relative positions with respect to components of the device, such as the relative positions of the top and bottom substrates inside the device. It will be appreciated that the devices are multifunctional, regardless of their orientation in space.
In hydrothermal carbonization, it is generally necessary to crush and ferment biomass using the crusher 1 and a fermentation tank. However, in order to ensure that the crushed material can be subjected to hydrothermal carbonization reaction sufficiently, the feed inlet of the fermentation tank is usually arranged at the top, and the discharge outlet is arranged at the bottom, so as to fully utilize the action of gravity. The biomass generally includes agricultural and forestry waste biomass, livestock manure, kitchen waste and the like, and therefore is generally in a solid-liquid mixed state with a solid content of more than 30%, has certain fluidity, but cannot be regarded as a liquid simply. For such biomass, the existing treatment methods include two types: firstly, the crusher 1 is arranged at a high position, and the fermentation tank is arranged at a low position, so that the crushed biomass can be directly conveyed into the fermentation tank through a pipeline; secondly, because the lifting of the solid-liquid mixed biomass cannot be realized at the same time, only the solid-liquid separation of the biomass is carried out, and then the hydrothermal carbonization of the solid biomass and the hydrothermal carbonization of the liquid biomass are respectively carried out by independently using the devices of the corresponding crusher 1 and the fermentation tank on the same horizontal plane.
Both of these approaches have significant drawbacks: firstly, more height space is occupied, a special high platform is required to be arranged to install the crusher 1, or a special pit is required to be arranged to install the fermentation tank, the structure is complex, and the arrangement of the whole system is not facilitated; secondly, because two sets of equipment are needed to respectively carry out hydrothermal carbonization, more space and resources are needed. In addition, the reaction rate of the existing equipment is relatively low when hydrothermal carbonization reaction is carried out, and a large amount of biomass is still mixed in the product after the reaction, so that the use of the hydrothermal carbon is influenced, and the energy density and the energy utilization rate of the hydrothermal carbon are reduced.
According to the embodiment of the invention, the material lifting mechanism is adopted, and on the premise that the crusher 1 and the fermentation tank are in the same horizontal plane, the biomass material mixed with solid and liquid is lifted at the same time, so that the hydrothermal carbonization of the biomass mixed with solid and liquid is simultaneously carried out by using the same equipment, and the reaction rate of the hydrothermal carbonization is improved by the premixing fermentation process and the optimization of the fermentation tank, so that the comprehensive quality of the prepared hydrothermal carbon is improved.
As shown in fig. 1, the embodiment of the present invention is described with reference to a hydrothermal carbonization integrated process device, specifically, the hydrothermal carbonization integrated process device includes: the crusher 1, the fermentation tank 2 and the high-pressure reaction kettle 3 are positioned on the same mounting plane; the crusher 1 is used for crushing biomass, and a discharge port of the crusher 1 is connected with a first feed port of the fermentation tank 2 through a first conveying channel; the discharge hole of the fermentation tank 2 is connected with the feed inlet of the high-pressure reaction kettle 3 through a second conveying channel; the first conveying channel adopts a solid-liquid mixed material lifting pipeline, and the solid-liquid mixed material lifting pipeline is provided with at least 1 material lifting mechanism 4; the second delivery passage is provided with a fluid pump. In the embodiment of the invention, a crusher 1 is used for crushing biomass to obtain biomass material in a solid-liquid mixed state, the biomass material in the solid-liquid mixed state is conveyed to a first feeding port of a fermentation tank 2 through a material lifting mechanism 4 of a first conveying channel, the biomass material in the solid-liquid mixed state entering the fermentation tank 2 is mixed with liquid inoculum and water entering a second feeding port of the fermentation tank 2, and pre-fermentation is carried out as required, at the moment, liquid material to be reacted can be obtained, the liquid material to be reacted is conveyed to a high-pressure reaction kettle 3 through a second conveying channel, hydrothermal carbonization reaction is carried out in the high-pressure reaction kettle 3 to prepare hydrothermal carbon with good aperture and a large amount of acidic surface functional groups and organic matters, and the hydrothermal carbon is separated through a solid-liquid separation device at a discharging port of the high-pressure reaction kettle 3.
It should be noted that: if the crushed biomass material is mainly biomass with higher carbon content and lower water content, such as similar crops, the water added into the fermentation tank 2 can be properly added, and the material to be reacted obtained after mixing and stirring is directly conveyed into the high-pressure reaction kettle 3 through the second conveying channel for hydrothermal carbonization; if the broken biomass material is mainly the biomass with high viscosity like sludge, the water added in the fermentation tank 2 can be properly reduced, the material to be reacted obtained after mixing and stirring is firstly pre-fermented in the fermentation tank 2, so that more micro bubbles are generated in the material to be reacted due to the fermentation process, and then the material is conveyed to the high-pressure reaction kettle 3 through the second conveying channel for hydrothermal carbonization, so that the reaction is more sufficient. The finally crushed biomass material is in a solid-liquid mixing state with the solid content of more than 30%, and the particle size of the particles is usually more than 5 mm.
The discharge port of the crusher 1 is arranged at the bottom of the crusher 1; the first feed inlet and the second feed inlet of fermentation cylinder 2 set up at the top of fermentation cylinder 2, and the discharge gate setting of fermentation cylinder 2 is in the bottom of fermentation cylinder 2. Because the material lifting mechanism 4 is adopted in the embodiment of the invention, the whole equipment can process the biomass in a solid-liquid mixed state on the premise of ensuring that the crusher 1, the fermentation tank 2 and the high-pressure reaction kettle 3 are arranged on the same plane, and the equipment has simple installation and simple structure; in addition, the embodiment of the invention also realizes the mixing and fermentation of the inoculum through the fermentation tank 2, and improves the reaction rate of hydrothermal carbonization, thereby obtaining a hydrothermal carbon product with good aperture, a large amount of acidic surface functional groups and organic matters, and leading the hydrothermal carbonization product to have higher energy density and energy conversion efficiency.
As shown in fig. 2 to 4, the material lifting mechanism 4 is one of the cores of the embodiment of the present invention, and the material lifting mechanism 4 includes: a square tube frame 9 and 2 half square tube mechanisms; half square tube mechanism includes: a half square tube 7, a rotatable baffle 8 and a motor; the square tube frame 9 can splice the half square tubes 7 of the 2 half square tube mechanisms into a square tube, and the motor is used for driving the half square tubes 7 to slide along the axis direction of the square tube; the half square tube 7 comprises a whole side wall and 2 half side walls, the edge of the half side wall is provided with a sealing sliding chute, the whole side wall is hinged with a rotatable baffle 8, and the rotatable baffle 8 can rotate towards the fluid flowing direction to enable materials to flow in the square tube; the rotatable baffle 8 is a rectangular plate, the length of the short edge of the rotatable baffle 8 is equal to the width of the inner wall of the square tube, and sealing strips are arranged on the edges of the periphery of the rotatable baffle 8; the 2 rotatable baffle plates 8 are arranged in sequence along the material flowing direction and do not interfere with each other when rotating.
For convenience of explanation, as shown in fig. 5 and 6, the 2 half-pipe mechanisms are a first mechanism and a second mechanism, respectively: when the half-direction pipe of the first mechanism moves upwards relative to the half-direction pipe of the second mechanism, the rotatable baffle of the first mechanism is abutted against the inner side of the whole side wall of the half-direction pipe of the second mechanism, the rotatable baffle of the second mechanism rotates upwards under the action of materials and is separated from the inner side of the whole side wall of the half-direction pipe of the first mechanism, and the materials enter between the rotatable baffle of the first mechanism and the rotatable baffle of the second mechanism from the lower part of the rotatable baffle of the second mechanism through the separated opening; when the half-square pipe of the second mechanism moves upwards relative to the half-square pipe of the first mechanism, the rotatable baffle of the second mechanism is abutted against the inner side of the whole side wall of the half-square pipe of the first mechanism, the rotatable baffle of the first mechanism rotates upwards under the action of the materials, and the materials enter the upper part of the rotatable baffle of the first mechanism from the position between the rotatable baffle of the first mechanism and the rotatable baffle of the second mechanism through the separated opening; when the first mechanism and the second mechanism continuously slide up and down relatively, the materials are lifted up gradually from bottom to top. And the sealing strip at the edge of the rotatable baffle can prevent the solid-liquid mixed material from falling back when the rotatable baffle abuts against the whole side wall.
In order to guarantee that 2 half square tube mechanisms can slide relatively, the cross sectional shape of the sealing chute of the first mechanism is in a shape like a Chinese character 'tu', a sealing slide block with a cross sectional shape like a Chinese character 'tu' is arranged at a corresponding position of the second mechanism, the sealing chute and the sealing slide block can perform relative sliding and can also play a role in limiting to prevent the separation of the 2 half square tube mechanisms, and in addition, a sealing strip arranged on a contact surface of the sealing chute and the sealing slide block can prevent materials from leaking from the splicing position of the 2 half square tube mechanisms.
In the embodiment of the invention, the mode of controlling the reciprocating motion of the half square tube 7 by the motor is as follows:
the motor controls the ball screw pair, the motor is fixed with the square tube frame 9, an output gear is arranged at the output end of the motor, the output gear drives a screw rod to rotate through a reduction gear set, a screw nut on the screw rod moves up and down, the screw nut is fixed with the half square tube 7, and reciprocating motion of the half square tube 7 is achieved.
Or, the motor controls the hydraulic cylinder, the cylinder body of the hydraulic cylinder is fixed with the square pipe frame 9, and the piston of the hydraulic cylinder is fixed with the half square pipe 7, so that the reciprocating motion of the half square pipe 7 is realized.
Or, the motor controls the gear-rack pair, the motor is fixed with the square tube frame 9, the output end of the motor is provided with an output gear, the output gear drives the rack gear to rotate through the reduction gear set, so that the rack moves up and down, and the rack is fixed with the half square tube 7, so that the reciprocating motion of the half square tube 7 is realized.
In order to simplify the solid-liquid mixed material lifting pipeline, a material lifting mechanism 4 is not required to be arranged on the whole solid-liquid mixed material lifting pipeline, and only a plurality of material lifting mechanisms 4 are required to be arranged to lift the solid-liquid mixed material to a high position. The both ends of sleeve pipe 5 are the square connector of rigidity, and square connector can overlap the outside of managing in side to with square pipe frame 9 fixed connection, and square connector and square pipe directly are equipped with the sealing washer, can prevent that the material from managing to spill with square connector junction from square. It should be noted that, a square connecting pipe is arranged between the two square connectors, the square connecting pipe can be set as a straight pipe or an elbow pipe according to the situation, and the square connecting pipe should be a rigid pipe to prevent the square connecting pipe from being damaged by the material in the square connecting pipe.
Correspondingly, the discharge gate of breaker 1 and the first feed inlet of fermentation cylinder 2 all are equipped with can with square connector sealing connection and fixed connection's interface.
The structure formed by connecting the square pipe frame 9 and the sleeve 5 in the solid-liquid mixed material lifting pipeline provided by the embodiment of the invention is a rigid structure, so that the fixed path and shape of the solid-liquid mixed material lifting pipeline are ensured, and 2 half square pipe mechanisms reciprocate relative to the corresponding square pipe frame 9, so that the solid-liquid mixed material can be conveyed from a low position to a high position along the solid-liquid mixed material lifting pipeline, and the lifting and conveying of the solid-liquid mixed material are realized.
In the embodiment of the invention, the inoculum is added into the biomass through the fermentation tank 2, and the inoculum and the biomass are mixed to realize a pre-fermentation process. In the embodiment of the invention, the first feeding hole, the second feeding hole and the discharging hole of the fermentation tank 2 are all provided with sealing valves because a certain atmosphere needs to be kept in the fermentation process. When the organisms are sludge containing microorganisms and have high viscosity, fermentation is needed, all sealing valves are closed, and fermentation can be carried out in the fermentation tank 2; in other cases, the mixture of the reactants can be conveyed from the fermentation tank 2 to the high-temperature reaction kettle 3 along with the continuous stirring in the fermentation tank 2 without fermentation by opening the closed valve so as to carry out hydrothermal carbonization reaction.
In order to enable stirring and fermentation to be more uniform, in the embodiment of the invention, the fermentation tank 2 is provided with a stirring device for stirring and mixing the biomass and the inoculum in the fermentation tank 2, and meanwhile, the biomass in the fermentation tank 2 can be more fully fermented in the fermentation process; the stirring device comprises a rotating shaft, a rotating motor, blades and a lifting motor; the rotating motor is used for controlling the rotating shaft to rotate in the circumferential direction, and the lifting motor is used for controlling the rotating shaft to move in the axial direction; the blade is equipped with a plurality ofly, and the equipartition is fixed to be set up in the pivot. In the embodiment of the invention, the mixture in the fermentation tank 2 is circumferentially stirred by the circumferential rotation of the blades along with the rotating shaft, and the mixture in the fermentation tank 2 is axially turned over by the axial movement of the blades along with the rotating shaft.
In the embodiment of the invention, the final hydrothermal carbonization process is realized through the high-pressure reaction kettle 3, and in order to improve the reaction rate of hydrothermal carbonization, in the embodiment of the invention, besides a stirring device is required to be arranged in the high-pressure reaction kettle 3, the uniformity of materials in the high-pressure reaction kettle 3 is further improved through the improvement of a feeding structure, so that the reaction rate of hydrothermal carbonization is further improved. Specifically, the second conveying channel is provided with a four-way structure 6, the four-way structure 6 comprises 1 input end and 3 output ends, and the 1 input end and the 3 input ends form a regular triangular pyramid; 3 feed inlets of the high-pressure reaction kettle 3 are uniformly distributed along the circumferential direction of the high-pressure reaction kettle 3; the output end of each four-way structure 6 is respectively connected with the feed inlets of 1 high-pressure reaction kettle 3. In the embodiment of the invention, materials are added into the high-pressure reaction kettle 3 through the four-way structure 6 of the regular triangular pyramid and the three circumferentially uniformly distributed feed inlets, so that the materials in the high-pressure reaction kettle 3 are more uniform, the hydrothermal carbonization reaction can be more sufficient, the hydrothermal carbonization reaction rate is improved, and the yield of the hydrothermal carbonization can be improved to 90%.
In order to ensure that the materials can be uniformly subjected to hydrothermal carbonization reaction in the high-pressure reaction kettle 3, in the embodiment of the invention, the tank body of the high-pressure reaction kettle 3 is a revolving body with the axis vertical to the mounting plane, and the lower part of the tank body is of a round table-shaped structure with a thick upper part and a thin lower part; the discharge hole of the high-pressure reaction kettle 3 is arranged at the bottom end of the tank body. In the high-pressure reaction kettle 3 of the embodiment of the invention, under the action of hydrothermal carbonization, the viscosity and the solid content of the material show a descending trend, the trend gradually increases from top to bottom in the vertical direction and gradually increases from the periphery to the center in the horizontal direction in the high-pressure reaction kettle 3, and the material subjected to hydrothermal carbonization can be discharged from the bottom of the high-pressure reaction kettle 3 by using the self gravity of the material and the cone angle of the truncated cone-shaped structure.
In the embodiment of the invention, the product after hydrothermal carbonization is subjected to solid-liquid separation by the solid-liquid separation device arranged at the discharge port of the high-pressure reaction kettle 3 to obtain solid hydrothermal carbon and hydrothermal carbon liquid for subsequent further utilization. In the hydrothermal carbonization product prepared by the equipment of the embodiment of the invention:
the hydrothermal carbon has a good pore structure and a large specific surface area; the hydrothermal carbon comprises organic carbon and humic acid (the mass percent of humic acid is 5-30%), so that the organic nutrients of the red mud can be effectively increased; moreover, a large number of oxygen-containing functional groups with weak acidity are arranged on the surface of the hydrothermal carbon, so that the acidity and alkalinity of the red mud can be stabilized for a long time by slowly releasing acid sites through neutralization; the modified hydrothermal carbon obtained after the hydrothermal carbon is carbonized can improve the air permeability and porosity of the red mud;
the hydrothermal carbon liquid contains small molecular organic acidic substances (such as furfural, propionic acid and acetic acid); the small molecular organic acidic substances in the hydrothermal carbon liquid can quickly reduce the alkalinity of the red mud. And can provide carbon sources for microorganisms and improve the microbial growth environment of the red mud.
In summary, according to the solid-liquid mixed material lifting pipeline provided by the embodiment of the invention, the broken solid-liquid mixed material can be conveyed from a low position to a high position in a closed manner through the material lifting mechanism, so that the broken solid-liquid mixed biomass can be conveyed to the top of the fermentation tank from the bottom of the breaker, and the treatment of biomass hydrothermal carbonization is facilitated; the direction of the whole transportation channel can be adjusted through the sleeve between the material lifting mechanisms, so that the application range of the invention is widened; the lifting device is simple in structure and automatic in operation, and lifting and transportation of solid-liquid mixed materials which are difficult to realize in the prior art are realized.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (10)
1. The solid-liquid mixed material lifting pipeline is characterized by comprising a material lifting mechanism (4), wherein the material lifting mechanism (4) comprises 2 half square pipe mechanisms, and each half square pipe mechanism comprises a half square pipe (7) and a rotatable baffle (8); the 2 half square pipes (7) can be spliced into a square pipe and can slide along the material flowing direction; the rotatable baffle (8) is hinged with the whole side wall of the half square pipe (7); the rotatable baffle (8) can rotate towards the material flowing direction and is in sealing contact with the half side wall of the half square pipe (7); the rotatable baffle (8) is a rectangular plate, the long edge of the rectangular plate is larger than the side length of the cross section of the square pipe, and the short edge of the rectangular plate is equal to the side length of the cross section of the square pipe.
2. The solid-liquid mixed material lifting pipeline according to claim 1, wherein the material lifting mechanism (4) further comprises a square pipe frame (9); the half square pipe mechanism is arranged on the square pipe frame (9); the square tube frame (9) can be used for splicing 2 half square tubes (7) into a square tube and circumferentially limiting the square tube.
3. The solid-liquid mixed material lifting pipeline according to claim 2, wherein the half square pipe mechanism further comprises a motor, and the motor is fixedly installed on the square pipe frame (9); the motor is used for driving the half square pipe (7) to reciprocate along the axial direction of the solid-liquid mixed material lifting pipeline.
4. The solid-liquid mixed material lifting pipeline according to claim 3, wherein the half square pipe (7) is mounted on the square pipe frame (9) through a square pipe slide rail;
both ends of the square tube slide rail are provided with stopping parts.
5. The solid-liquid mixed material lifting pipeline according to claim 4, wherein the edges of the half side walls of the two half square pipes (7) are connected through a sealing sliding structure;
the sealing sliding structure comprises a strip-shaped sliding groove and a strip-shaped sliding block, the strip-shaped sliding block is provided with a strip-shaped limiting part, and the strip-shaped limiting part can be embedded into the strip-shaped sliding groove;
the strip-shaped limiting part is made of wear-resistant rubber.
6. The solid-liquid mixed material lifting pipeline according to claim 5, wherein the motor drives the half square pipe (7) to reciprocate through a driving structure;
the driving structure is one of a ball screw pair, a hydraulic cylinder and a gear rack.
7. The solid-liquid mixed material lifting pipeline according to claim 6, wherein sealing strips are arranged around the rotatable baffle (8), and the rotatable baffle (8) and the inner walls of the 2 half square pipes (7) are sealed.
8. The solid-liquid mixture lifting pipe according to any one of claims 1 to 7, characterized by further comprising a casing (5);
two ends of the sleeve (5) are provided with rigid connectors, and the middle of the sleeve is provided with a flexible pipeline;
the connector can be sleeved at the end part of the material lifting mechanism (4).
9. The solid-liquid mixed material lifting pipeline according to claim 8, wherein the solid-liquid mixed material lifting pipeline is provided with N material lifting mechanisms (4) and N +1 sleeves (5), wherein N is a positive integer;
the sleeve pipes (5) are alternately connected with the material lifting mechanism (4).
10. The solid-liquid mixed material lifting pipeline according to claim 9, wherein the cross section of the connector is square; a sealing ring is arranged between the connector and the square tube.
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| CN201911366568.4A CN111014253B (en) | 2019-12-26 | 2019-12-26 | Solid-liquid mixed material lifting pipeline |
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| CN111014253B true CN111014253B (en) | 2020-12-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB191105204A (en) * | 1910-03-01 | 1912-03-01 | Julius Pohlig | Improvements in or relating to Apparatus for Conveying and Lifting Red Hot Material. |
| JP2008013286A (en) * | 2006-07-04 | 2008-01-24 | Sintokogio Ltd | Bucket elevator for transporting granular matter |
| CN207129558U (en) * | 2017-09-07 | 2018-03-23 | 安徽辉隆集团五禾生态肥业有限公司 | Self-cleaning deposits material elevator |
| CN208088061U (en) * | 2018-03-01 | 2018-11-13 | 江苏中新苏通市政工程有限公司 | A kind of asphalt concrete mixer material hoisting system |
| CN110482124A (en) * | 2018-05-15 | 2019-11-22 | 宜昌天佑华牧科技股份有限公司 | A kind of high life and efficient material lifting device |
| CN209444667U (en) * | 2018-11-07 | 2019-09-27 | 东鹏博大（天津）实业有限公司 | A kind of novel square pipe connection component |
| CN209618132U (en) * | 2019-02-22 | 2019-11-12 | 晋州市富隆建筑材料有限公司 | Bucket elevator |
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