Pretreatment device

Abstract

The utility model provides a pretreatment device and relates to the technical field of pretreatment. The pretreatment device comprises a feeding tank, a drying mechanism, a conveying mechanism and a discharging tank, wherein the feeding tank is used for accommodating materials to be treated; the drying mechanism comprises a main body, a stirring assembly and a heating assembly, the stirring assembly is rotationally arranged in the main body, and the heating assembly is used for heating at least one of the main body and the stirring assembly; the conveying mechanism is arranged between the feeding tank and the drying mechanism, communicates with the feeding tank and the main body and is used for conveying to-be-treated materials in the feeding tank into the main body; the discharging tank communicates with the drying mechanism and is used for containing the materials dried by the drying mechanism. The heating assembly can increase the contact area with the to-be-treated materials, the to-be-treated materials are heated while being stirred and mixed, and the drying effect of the to-be-treated materials is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the pretreatment technical field in general, specifically, relate to a kind of pretreatment device. BACKGROUND

[0002] In the fermentation process of long-chain dibasic acid, granular carbon is generally used to adsorb long-chain dibasic acid, and decolorization treatment is carried out. The saturated granular carbon remaining after decolorization is generally washed with water and then enters the regeneration system. However, due to the high moisture content of the saturated granular carbon entering the regeneration system and the acidic nature of the moisture, the furnace wall of the regeneration furnace will be corroded at high temperatures. The high moisture content of the saturated granular carbon entering the furnace will cause a cold shock to the furnace, causing the refractory bricks at the bottom of the carbon drop port to be damaged and fall, reducing the service life of the regeneration system. It also increases the use of natural gas and CO2 emissions, which does not meet the energy-saving and environmental protection requirements.

[0003] Therefore, the existing activated carbon regeneration technology needs to be improved. INVENTION CONTENTS

[0004] The pretreatment device provided by the utility model improves the drying effect and saves energy and reduces emissions.

[0005] According to one aspect of the utility model, a pretreatment device is provided, comprising:

[0006] A feed tank is used to hold the material to be treated.

[0007] A drying mechanism includes a main body, a stirring assembly, and a heating assembly. The stirring assembly is rotatably arranged in the main body. The heating assembly is used to heat at least one of the main body and the stirring assembly.

[0008] A conveying mechanism is arranged between the feed tank and the drying mechanism and communicates with the feed tank and the main body, and is used to convey the material to be treated in the feed tank into the main body.

[0009] A discharge tank is in communication with the drying mechanism and is used to hold the material dried by the drying mechanism.

[0010] In some embodiments, the heating assembly includes a first heating pipe, the first heating pipe is used to pass through a heat exchange medium, and the first heating pipe is arranged around the outer wall of the main body.

[0011] And / or, the heating assembly includes a first heating pipe, the main body includes an outer cylinder and an inner cylinder that are arranged in each other, a cavity is arranged between the outer cylinder and the inner cylinder, the stirring assembly is rotatably arranged in the inner cylinder, and the first heating pipe is in communication with the cavity to pass the heat exchange medium into the cavity.

[0012] In some embodiments, the stirring assembly comprises a rotating shaft and a disc, the rotating shaft is rotatably arranged in the main body and penetrates the disc, and the rotating shaft is in communication with the disc.

[0013] The heating assembly comprises a second heating pipeline, the second heating pipeline is in communication with the rotating shaft, and the second heating pipeline can deliver a heat exchange medium to the disc through the rotating shaft to dry the material to be treated.

[0014] In some embodiments, the heating assembly further comprises:

[0015] A rotary joint is arranged between and in communication with the rotating shaft and the second heating pipeline.

[0016] In some embodiments, the stirring assembly further comprises:

[0017] A paddle is arranged at the edge of the disc.

[0018] The thickness of the disc gradually decreases from the center to the edge along the axial direction of the rotating shaft.

[0019] In some embodiments, the stirring assembly further comprises:

[0020] A feeding member is arranged at the edge of the disc, the main body is provided with an inlet and an outlet at both ends thereof along the axial direction, the inlet is in communication with the conveying mechanism, the outlet is in communication with the discharge tank, and the feeding member is arranged at an angle with respect to the axial direction of the main body, so that the material to be treated in the main body can move from the inlet to the outlet.

[0021] In some embodiments, the conveying mechanism comprises:

[0022] A separator is in communication with the feeding tank and is used for cleaning and primary solid-liquid separation of the material to be treated.

[0023] A conveying body is in communication with the bottom of the separator at one end and is in communication with the drying mechanism at the other end.

[0024] A spiral structure is rotatably arranged in the conveying body, and the axial direction of the spiral structure is arranged at an angle with respect to the axial direction of the main body, so that the material separated by the separator is subjected to secondary solid-liquid separation and is conveyed to the drying mechanism by the spiral structure.

[0025] In some embodiments, further comprising:

[0026] A condensing pipeline in communication with at least one of the main body and the stirring assembly for conveying condensed heat exchange medium.

[0027] In some embodiments, the application further comprises:

[0028] A circulating assembly in communication with the conveying mechanism, the condensing pipeline and the feed tank, so that the heat exchange medium output by the conveying mechanism and the condensing pipeline respectively flows back to the conveying mechanism and the feed tank through the circulating assembly.

[0029] In some embodiments, the circulating assembly comprises:

[0030] A circulating tank in communication with the condensing pipeline;

[0031] A liquid outlet pipeline having one end in communication with the circulating tank and the other end in communication with the feed tank;

[0032] A liquid outlet branch pipeline having one end in communication with the liquid outlet pipeline and the other end in communication with the conveying mechanism;

[0033] A circulating pump for conveying the heat exchange medium in the circulating tank to the feed tank through the liquid outlet pipeline and to the conveying mechanism through the liquid outlet branch pipeline.

[0034] In some embodiments, the circulating assembly further comprises:

[0035] An overflow pipeline having one end in communication with the conveying mechanism and the other end in communication with the circulating tank, so that the supernatant overflowing from the conveying mechanism is conveyed to the circulating tank through the overflow pipeline.

[0036] In some embodiments, the application further comprises:

[0037] A circulating pipeline having one end in communication with the discharge tank and the other end in communication with the heating assembly, so that the discharge tank conveys heat exchange medium to the heating assembly through the circulating pipeline.

[0038] An embodiment of the application has the following advantages or beneficial effects:

[0039] The pretreatment device provided by the embodiment of the application can convey the material to be treated in the feed tank to the drying mechanism by using the conveying mechanism, evaporate the moisture in the material to be treated by using the drying mechanism, realize drying treatment, effectively control the moisture content of the material to be treated when entering the subsequent regeneration system, realize the pretreatment process before the regeneration of the saturated granular carbon, thereby reducing the corrosion and cold impact damage of moisture to the regeneration system, prolonging the service life, reducing the energy consumption of the regeneration system, saving production cost, and achieving energy saving and environmental protection.

[0040] When the conveying mechanism conveys the material to be treated in the feed tank into the main body, the stirring assembly rotates relative to the main body for stirring the material to be treated, realizing sufficient mixing of the material to be treated, the heating assembly heats at least one of the main body and the stirring assembly, increases the contact area with the material to be treated, and the material to be treated is heated while being stirred and mixed, improving the drying effect of the material to be treated. BRIEF DESCRIPTION OF DRAWINGS

[0041] For a better understanding of the present application, reference can be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and related elements can be omitted in order to emphasize and clarify the technical features of the present application. In addition, related elements or components can have different settings as known in the art. Furthermore, in the drawings, the same reference numerals represent the same or similar components in each drawing. The above and other features and advantages of the present application will become more apparent by describing example embodiments thereof with reference to the accompanying drawings.

[0042] In the present application,

[0043] Figure 1 Fig. 1 shows a structural schematic diagram of a pretreatment device according to an embodiment of the present application;

[0044] Figure 2 Fig. 2 shows a structural schematic diagram of a stirring assembly in a pretreatment device according to an embodiment of the present application;

[0045] Figure 3 Fig. 3 shows a flowchart of a pretreatment method corresponding to a pretreatment device according to an embodiment of the present application.

[0046] In the present application,

[0047] 1, feed tank; 2, drying mechanism; 3, conveying mechanism; 4, discharge tank; 5, condensing pipeline; 6, circulating assembly; 7, circulating pipeline;

[0048] 21, main body; 22, stirring assembly; 23, heating assembly; 24, rotary drive source;

[0049] 221, rotating shaft; 222, disc; 223, scoop; 224, feed;

[0050] 231, first heating pipeline; 232, second heating pipeline; 233, rotary joint;

[0051] 31, separator; 32, conveying body; 33, spiral structure;

[0052] 61, circulating tank; 62, liquid outlet pipeline; 63, liquid outlet branch pipe; 64, circulating pump; 65, overflow pipeline. DETAILED DESCRIPTION

[0053] The technical solutions in the example embodiments of the utility model will be clearly and completely described in combination with the drawings in the example embodiments of the utility model. The example embodiments described in the text are only for illustrative purposes, and are not intended to limit the protection scope of the utility model, so it should be understood that various modifications and changes can be made to the example embodiments without departing from the protection scope of the utility model.

[0054] In the description of the utility model, unless explicitly defined and limited, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; the term "multiple" refers to two or more than two; the term "and / or" includes any combination and all combinations of one or more associated listed items. In particular, referring to "the" object or "one" object is also intended to represent one of the possible multiple such objects.

[0055] Unless otherwise specified or explained, the terms "connection", "fixing" and the like should be broadly understood, for example, "connection" can be fixed connection, or detachable connection, or integrally connected, or electrically connected, or signal connected; "connection" can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0056] Further, in the description of the utility model, it should be understood that the "upper", "lower", "inner", "outer" and other orientation words described in the example embodiments of the utility model are described with the angle shown in the drawings, and should not be understood as limiting the example embodiments of the utility model. It should also be understood that in the context, when referring to one element or feature connected to another element (one or more) "on", "below", or "inside", "outside", it can not only be directly connected to another element (one or more) "on", "below", or "inside", "outside", but also indirectly connected to another element (one or more) "on", "below", or "inside", "outside" through the intermediate element.

[0057] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations, however, can be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example implementations to those skilled in the art. Like reference numerals in the drawings denote like or similar structures, so detailed description thereof will be omitted.

[0058] The present embodiment provides a pre-processing device, such as Figure 1As shown, the pretreatment device includes a feed tank 1, a drying mechanism 2, a conveying mechanism 3 and a discharge tank 4. The feed tank 1, which can also be referred to as a saturated carbon tank, is used to contain the material to be treated, which is specifically a water solution of saturated granular carbon. The conveying mechanism 3 is arranged between and communicates with the feed tank 1 and the drying mechanism 2, and is used to convey the material to be treated in the feed tank 1 into the drying mechanism 2, and to separate the material to be treated into solid and liquid. The drying mechanism 2 is used to dry the material to be treated. The discharge tank 4, which can also be referred to as a regenerator, communicates with the drying mechanism 2, and is used to contain the material dried by the drying mechanism 2.

[0059] The pretreatment device provided by the embodiment can convey the material to be treated in the feed tank 1 into the drying mechanism 2 and separate the material to be treated into solid and liquid by the conveying mechanism 3, and evaporate the water in the material to be treated by the drying mechanism 2 to achieve drying treatment, effectively control the water content of the material when entering the subsequent regeneration system, and achieve pretreatment of saturated granular carbon before regeneration, thereby reducing the corrosion and cold shock of the regeneration system caused by water, prolonging the service life, reducing the energy consumption of the regeneration system, saving production cost, and achieving energy saving and environmental protection.

[0060] For example, in a conventional saturated granular carbon regeneration mode without a pretreatment step, the high water content of the saturated granular carbon can cause corrosion and cold shock of the refractory bricks in the hearth of the regenerator, and thus the periodic maintenance time of the hearth of the regenerator is 3-6 months, and the periodic maintenance time of the wall of the regenerator is 1 year. By arranging the pretreatment device, the water content of the material entering the regenerator can be controlled to be less than 25wt%, so that the periodic maintenance time of the hearth of the regenerator can be extended to 1-1.5 years, and the periodic maintenance time of the wall of the regenerator can be extended to 2-3 years. Therefore, the service life of the regenerator (i.e., the discharge tank 4) is prolonged, and the average natural gas consumption is reduced from 74m 3 / h to 64m 3 / h, the emission of CO2 is reduced, the device is green and environmentally friendly, and the production and operation cost is saved.

[0061] In one embodiment, the top of the feed tank 1 can be provided with a carbon inlet and a water inlet. The carbon inlet is used to introduce granular carbon, and the water inlet is used to introduce water. It can be understood that a first control valve can be arranged in the carbon inlet, and a second control valve can be arranged in the water inlet. By controlling the opening and closing and opening degree of the first control valve and the second control valve, the ratio of saturated granular carbon and water in the material to be treated can be adjusted.

[0062] In one embodiment, the bottom of the feed tank 1 is in a conical structure, the small end of the conical structure faces the conveying mechanism 3, and the inner wall of the conical structure has a guiding effect, so that the material to be treated in the feed tank 1 can fall into the conveying mechanism 3.

[0063] In one embodiment, the top of the feed tank 1 can be provided with a carbon inlet and a water inlet. The carbon inlet is used to introduce granular carbon, and the water inlet is used to introduce water. It can be understood that a first control valve can be arranged in the carbon inlet, and a second control valve can be arranged in the water inlet. By controlling the opening and closing and opening degree of the first control valve and the second control valve, the ratio of saturated granular carbon and water in the material to be treated can be adjusted. Figure 1As shown, the conveying mechanism 3 includes a separator 31, which can also be called a water-washing solid-liquid separator. The separator 31 is connected to the feed tank 1 and is used for washing the material to be treated and performing primary solid-liquid separation. Specifically, when the material to be treated in the feed tank 1 is conveyed to the separator 31, the water in the separator 31 can wash the material to be treated, realizing the water washing process. Then, based on the sedimentation principle, the upper clear liquid of the material to be treated is located above the separator 31, and the solid of the material to be treated is deposited below the bottom of the separator 31, thereby realizing primary solid-liquid separation.

[0064] The conveying mechanism 3 also includes a conveying body 32 and a spiral structure 33, which can be referred to as a dewatering spiral conveyor. One end of the conveying body 32 is connected to the bottom of the separator 31, and the other end is connected to the drying mechanism 2. The spiral structure 33 is rotatably installed inside the conveying body 32. The axial direction of the spiral structure 33 is set at an angle to the axial direction of the body 21, so that the material that settles at the bottom of the separator 31 after the first solid-liquid separation by the separator 31 undergoes a second solid-liquid separation and is conveyed to the drying mechanism 2 through the spiral structure 33.

[0065] In this manner, as the spiral structure 33 rotates relative to the conveying body 32, it drives the material to be processed to move, thereby achieving the purpose of conveying the material. While the material rotates with the spiral structure 33, it undergoes secondary solid-liquid separation under centrifugal force, further reducing the moisture content. Simultaneously, because the axial direction of the spiral structure 33 is angled upwards from the axial direction of the main body 21, the liquid from the secondary solid-liquid separation falls under its own gravity into the separator 31 located at the bottom of the conveying body 32, facilitating subsequent washing and reuse of the separator 31.

[0066] In one embodiment, such as Figure 1 As shown, the drying mechanism 2 includes a main body 21, a stirring assembly 22 and a heating assembly 23. The stirring assembly 22 is rotatably disposed inside the main body 21, and the heating assembly 23 is used to heat at least one of the main body 21 and the stirring assembly 22.

[0067] For example, when the conveying mechanism 3 conveys the material to be processed in the feed tank 1 to the main body 21, the stirring component 22 rotates relative to the main body 21 to stir the material to be processed, thereby achieving full mixing of the material to be processed. At the same time, the heating component 23 heats at least one of the main body 21 and the stirring component 22, increasing the contact area with the material to be processed. The material to be processed is heated while being stirred and mixed, thereby improving the drying effect of the material to be processed.

[0068] Specifically, the main body 21 can be a cylindrical structure, with an inlet and an outlet at both ends along its axial direction. The inlet is connected to the conveying mechanism 3, and the outlet is connected to the discharge tank 4. The material to be processed enters the main body 21 through the inlet, and after being stirred by the stirring assembly 22 and heated and dried by the heating assembly 23, it is conveyed to the discharge tank 4 through the outlet. Since the inlet and outlet are located at opposite ends of the main body 21 along its axial direction, that is, material is fed into the main body 21 at one end and discharged at the other end, the feeding and discharging are carried out simultaneously, the production process is continuous, and the production efficiency is improved.

[0069] Specifically, such as Figures 1-2 As shown, the stirring assembly 22 includes a rotating shaft 221 and a disc 222. The rotating shaft 221 is rotatably disposed inside the main body 21 and passes through the disc 222. The rotating shaft 221 drives the disc 222 to rotate for stirring and mixing the material to be processed.

[0070] The number of discs 222 can be multiple, and the multiple discs 222 are arranged along the axial direction of the rotating shaft 221 so that the discs 222 are distributed as much as possible in the entire internal space of the main body 21, thereby further improving the mixing effect of the material to be processed.

[0071] The thickness of the disc 222 along the axial direction of the rotating shaft 221 gradually decreases from the center to the edge. With this design, the end face of the disc 222 along the axial direction of the rotating shaft 221 is a gradually changing transition slope. The transition slope serves as a transition and also provides a certain guiding effect, which is beneficial for the mixing and conveying of the material to be processed.

[0072] For example, both the rotating shaft 221 and the disk 222 are hollow structures, and the hollow structure of the rotating shaft 221 and the disk 222 can provide a space for accommodating the heat exchange medium.

[0073] In one embodiment, the drying mechanism 2 further includes a rotary drive source 24, which may be a rotary motor. The output end of the rotary drive source 24 is connected to the rotating shaft 221. The rotary drive source 24 drives the rotating shaft 221 to rotate the disc 222 to achieve the effect of rotary stirring.

[0074] In one embodiment, such as Figures 1-2 As shown, the stirring assembly 22 also includes lifting plates 223, which are disposed on the edge of the disc 222. When the disc 222 drives the lifting plates 223 to rotate relative to the main body 21, the lifting plates 223 can lift the material to be processed, making the material to be processed more evenly dispersed and improving the uniformity of stirring and mixing. At the same time, since there is a heat exchange medium inside the disc 222, when the lifted material to be processed falls down, it contacts the outer surface of the disc 222. The material to be processed is heated again by the disc 222 after being heated by the cylinder wall of the main body 21, thereby improving the drying effect.

[0075] The number of lifting plates 223 is multiple, and the multiple lifting plates 223 are evenly arranged along the circumference of the disc 222 to further improve the uniformity of the dispersion of the material to be processed.

[0076] When the axial direction of the main body 21 is parallel to the horizontal plane, the drying mechanism 2 has a horizontal structure, which presents a problem of difficulty in moving the material to be processed from the inlet to the outlet. To solve this problem, the stirring assembly 22 also includes a feeder 224, which is disposed on the disc 222 at an angle to the axial direction of the main body 21, enabling the material to be processed within the main body 21 to move from the inlet to the outlet. The feeder 224 provides guiding force for the material to be processed, realizing the feeding, moving, and conveying process of the material.

[0077] It is understandable that there are multiple feeders 224, which are correspondingly arranged on multiple disks 222. The inclination direction of the multiple feeders 224 on the same disk 222 is consistent. In this arrangement, the multiple feeders 224 form a spiral-like arrangement. When the rotating shaft 221 drives the multiple disks 222 to rotate synchronously, the multiple feeders 224 approximately form a spiral line, which can reduce the resistance during the rotation process and achieve the feeding and conveying effect of the material to be processed.

[0078] In one embodiment, such as Figure 1 As shown, the heating component 23 is used to introduce a heat exchange medium into the main body 21 and / or the stirring component 22, thereby achieving heat exchange with the main body 21 and / or the stirring component 22. The heat exchange medium may be steam.

[0079] Specifically, the heating assembly 23 includes a first heating pipe 231, which is used to introduce a heat exchange medium and is wound around the outer wall of the main body 21. With this arrangement, the first heating pipe 231 is wrapped around the outside of the main body 21, and the heat exchange medium inside the first heating pipe 231 keeps the main body 21 warm, which is beneficial for the evaporation of moisture from the material to be processed inside the main body 21 and improves the drying effect of the material.

[0080] Specifically, the heating component 23 includes a first heating pipe 231, the main body 21 includes an outer cylinder and an inner cylinder that are nested together, a cavity is provided between the outer cylinder and the inner cylinder, the stirring component 22 is rotatably disposed in the inner cylinder, and the first heating pipe 231 is connected to the cavity for introducing heat exchange medium into the cavity.

[0081] Because the main body 21 has a double-layer structure of an outer cylinder and an inner cylinder, the cavity between the outer and inner cylinders serves as a sandwich layer for the heat exchange medium. The gaseous heat exchange medium is continuously introduced into the cavity through the first heating pipe 231. This gaseous medium quickly covers the entire periphery of the inner cylinder, facilitating the heating of the material to be processed inside. Simultaneously, the inner cylinder also acts as an insulator to some extent, preventing direct contact between the heat exchange medium and the material to be processed, which could increase the moisture content of the material. The outer cylinder provides insulation to some extent, reducing heat loss from the heat exchange medium and further improving the drying effect of the material.

[0082] In one embodiment, such as Figure 1 As shown, the heating assembly 23 includes a second heating pipe 232, which is connected to a rotating shaft 221. The rotating shaft 221 is connected to a disc 222, meaning that the inner cavity of the rotating shaft 221 and the inner cavity of the disc 222 are connected to form a conveying channel. The second heating pipe 232 can convey a heat exchange medium to the disc 222 through the rotating shaft 221 for drying the material to be processed.

[0083] For example, the second heating pipe 232 continuously supplies a gaseous heat exchange medium into the conveying channel between the rotating shaft 221 and the disc 222, which can evaporate most of the moisture in the material to be treated in a very short time. In this way, the material to be treated can be dried while the disc 222 is stirring it. During the stirring process, the disc 222 and the material to be treated can fully contact and mix, with a large contact area and a large heating surface, which improves the heating and drying effect and effectively controls the moisture content in the saturated granular char that subsequently enters the regeneration system.

[0084] In one embodiment, such as Figure 1 As shown, the heating assembly 23 also includes a rotary joint 233, which is disposed between the rotating shaft 221 and the second heating pipe 232 and communicates with the rotating shaft 221 and the second heating pipe 232. The rotary joint 233 is used to prevent the rotating shaft 221 from driving the second heating pipe 232 to rotate during the rotation process, which would cause entanglement.

[0085] In one embodiment, the heating assembly 23 further includes a condensing pipe 5, which is connected to at least one of the main body 21 and the stirring assembly 22, for conveying the condensed heat exchange medium.

[0086] When the heating component 23 introduces a gaseous heat exchange medium into the main body 21 and / or the stirring component 22, the heat exchange medium will condense when it encounters cold air while heating the material to be processed, forming a liquid heat exchange medium. The condensed heat exchange medium is output through the condensation pipe 5, which serves to discharge the liquid heat exchange medium.

[0087] For example, the outer cylinder of the main body 21 is provided with a first condensation port, the rotary joint 233 is provided with a second condensation port, and the condensation pipe 5 is connected to the first condensation port and / or the second condensation port to output the heat exchange medium condensed in the outer cylinder and the rotary joint 233.

[0088] In one embodiment, such as Figure 1 As shown, the pretreatment device also includes a circulation component 6, which is connected to the conveying mechanism 3, the condenser pipe 5 and the feed tank 1, so that the upper clear liquid overflowing from the separator 31 of the conveying mechanism 3 and the heat exchange medium output from the condenser pipe 5 are returned to the conveying mechanism 3 and the feed tank 1 respectively through the circulation component 6.

[0089] In this way, the overflow of the upper clear liquid from the conveying mechanism 3 and the condensed heat exchange medium output from the condensing pipe 5 are not directly discharged, but are returned to the conveying mechanism 3 and the feed tank 1 through the circulation component 6, so as to achieve recycling, energy saving and emission reduction, and reduce production costs.

[0090] Specifically, the circulation assembly 6 includes a circulation tank 61 and an outlet pipe 62. The circulation tank 61 is connected to the condensation pipe 5 and serves to contain and store the condensed heat exchange medium. One end of the outlet pipe 62 is connected to the circulation tank 61, and the other end is connected to the feed tank 1, so that the heat exchange medium in the circulation tank 61 is transported to the feed tank 1 through the outlet pipe 62 to provide water as a solvent for the material to be treated, reducing the need for additional water through external equipment and saving production costs.

[0091] Specifically, such as Figure 1 As shown, the circulation component 6 also includes an outlet branch pipe 63. One end of the outlet branch pipe 63 is connected to the outlet pipeline 62, and the other end is connected to the conveying mechanism 3. This allows the heat exchange medium in the circulation tank 61 to be transported to the separator 31 of the conveying mechanism 3 through the outlet pipeline 62 and the outlet branch pipe 63. This provides the separator 31 with the water required for washing the material to be treated. While ensuring the washing effect, this also reduces the need to add water through external equipment, thus saving production costs.

[0092] Specifically, such as Figure 1 As shown, the circulation assembly 6 also includes a circulation pump 64, which provides power for conveying the heat exchange medium from the circulation tank 61, so that the heat exchange medium in the circulation tank 61 is conveyed to the feed tank 1 through the liquid outlet pipe 62, and then conveyed to the conveying mechanism 3 through the liquid outlet branch pipe 63.

[0093] Specifically, the circulation component 6 also includes an overflow pipe 65, one end of which is connected to the separator 31 of the conveying mechanism 3, and the other end is connected to the circulation tank 61. The upper clear liquid overflowing from the conveying mechanism 3 is transported to the circulation tank 61 through the overflow pipe 65.

[0094] After the material to be treated is washed and settled by the separator 31, the upper layer of clear liquid is located above the separator 31, while the solids are deposited at the bottom of the separator 31, achieving solid-liquid separation in one step. As the liquid level of the material to be treated gradually increases to the preset level, the water in the separator 31 overflows into the circulation tank 61, realizing water recycling and avoiding water waste.

[0095] In one embodiment, such as Figure 1 As shown, the pretreatment device also includes a circulation pipeline 7, one end of which is connected to the discharge tank 4 and the other end is connected to the heating component 23. The discharge tank 4 delivers the heat exchange medium to the heating component 23 through the circulation pipeline 7.

[0096] With this configuration, the secondary steam generated by the waste heat of the discharge tank 4 can be used as a heat exchange medium and provide the required heat exchange medium for the heating component 23, realizing the reuse of waste heat, saving resources and protecting the environment, and reducing production costs.

[0097] This embodiment also provides a preprocessing method for controlling the aforementioned preprocessing apparatus, such as... Figure 3 As shown, the preprocessing method includes the following steps:

[0098] S1. Place the material to be processed in the feed tank 1 and use the conveying mechanism 3 to transport the material to be processed into the drying mechanism 2;

[0099] S2. The material to be processed in the main body 21 is stirred by the stirring component 22 of the drying mechanism 2, the material to be processed is heated and dried by the heating component 23, and the dried material is conveyed to the discharge tank 4.

[0100] The pretreatment method provided in this embodiment involves conveying the material to be treated in the feed tank 1 to the main body 21 of the drying unit 2 via the conveying mechanism 3. The heating component 23 heats and dries the material, while the stirring component 22 of the drying unit 2 stirs the material in the main body 21 to achieve thorough mixing and increase the contact area with the material. This achieves the effect of simultaneous stirring, mixing, and heating of the material, improving the drying effect and effectively controlling the moisture content of the material before it enters the subsequent regeneration system. This pretreatment before the regeneration of saturated granular carbon reduces the corrosion of the regeneration system by moisture and the damage caused by cold impact on the refractory bricks, thus extending the service life of the regeneration system.

[0101] The ratio of saturated granular carbon to water in the material to be processed in the feed tank 1 is 1kg:(5~10)L, for example 1kg:5L, 1kg:6L, 1kg:7L, 1kg:8L, 1kg:9L, 1kg:10L, etc.

[0102] In one embodiment, conveying the material to be processed using the conveying mechanism 3 includes the following steps:

[0103] The material to be processed is cleaned by the separator 31 of the conveying mechanism 3 and a solid-liquid separation is performed on the material to be processed.

[0104] Specifically, the separator 31 can clean the material to be treated to achieve a water washing process. The separator 31 also has a solid-liquid separation function. After the material to be treated settles in the separator 31, the upper clear liquid of the material to be treated is located above the separator 31, and the solid of the material to be treated is deposited below the bottom of the separator 31 to achieve solid-liquid separation.

[0105] In one embodiment, conveying the material to be processed using the conveying mechanism 3 includes the following steps:

[0106] The material after solid-liquid separation in separator 31 is subjected to secondary solid-liquid separation using the spiral structure 33 of conveying mechanism 3 and then conveyed to drying mechanism 2 via the spiral structure 33.

[0107] Specifically, the spiral structure 33 of the conveying mechanism 3 drives the material to be processed to move, thereby realizing the conveying of the material to be processed. During the conveying process, the material to be processed achieves secondary solid-liquid separation under centrifugal action, further reducing the moisture in the material to be processed. The liquid of the material to be processed after secondary solid-liquid separation slides down into the separator 31 located at the bottom of the conveying body 32 under its own gravity. The separator 31 plays the role of recycling and utilization.

[0108] In one embodiment, the rotational speed of the spiral structure 33 is 5 to 15 r / min, preferably 5 to 10 r / min. For example, the specific rotational speed can be 5 r / min, 6 r / min, 7 r / min, 8 r / min, 9 r / min, 10 r / min, 11 r / min, 12 r / min, 13 r / min, 14 r / min, 15 r / min, etc.

[0109] In one embodiment, the water content of the material after secondary solid-liquid separation by the spiral structure 33 is less than 65 wt%, preferably less than 62 wt%. For example, the water content can be 55 wt%, 56 wt%, 57 wt%, 58 wt%, 59 wt%, 60 wt%, 61 wt%, 62 wt%, 63 wt%, 64 wt%, 65 wt%, etc.

[0110] In one embodiment, the moisture content of the material dried by the drying unit 2 is less than 25 wt%, preferably less than 22 wt%. For example, the moisture content can be 15 wt%, 16 wt%, 17 wt%, 18 wt%, 19 wt%, 20 wt%, 21 wt%, 22 wt%, 23 wt%, 24 wt%, 25 wt%, etc.

[0111] In one embodiment, when the stirring component 22 is used to stir the material to be processed in the main body 21, the rotational speed of the stirring component 22 is 5 to 15 r / min, preferably 10 to 15 r / min. For example, the specific rotational speed can be 5 r / min, 6 r / min, 7 r / min, 8 r / min, 9 r / min, 10 r / min, 11 r / min, 12 r / min, 13 r / min, 14 r / min, 15 r / min, etc.

[0112] In one embodiment, drying the material to be processed by heating component 23 includes the following steps:

[0113] The first heating pipe 231 of the heating assembly 23 is arranged around the outer wall of the main body 21 and / or delivers the heat exchange medium to the cavity of the main body 21;

[0114] The heat exchange medium is delivered to the rotating shaft 221 and the disc 222 of the stirring assembly 22 via the second heating pipe 232 of the heating assembly 23.

[0115] In this manner, the first heating pipe 231 injects a gaseous heat exchange medium with a certain temperature into the cavity of the main body 21, and the second heating pipe 232 injects a gaseous heat exchange medium with a certain temperature into the rotating shaft 221 and the disc 222. The material to be processed is in a heating environment, so that most of the moisture in the saturated granular carbon is evaporated in a very short time, thereby achieving the purpose of effectively controlling the moisture content of the saturated granular carbon when it enters the regeneration system.

[0116] In one embodiment, the pressure of the heat exchange medium is 0.25 to 0.55 MPa, preferably 0.40 to 0.55 MPa, and the specific pressure of the heat exchange medium can be selected from 0.25 MPa, 0.30 MPa, 0.35 MPa, 0.40 MPa, 0.45 MPa, 0.50 MPa, 0.55 MPa, etc.

[0117] In one embodiment, when the material to be processed is dried by heating the heating component 23, the condensed heat exchange medium is not directly discharged, but is returned to the conveying mechanism 3 and the feed tank 1 through the circulation component 6, so as to achieve recycling, energy saving and emission reduction, and reduce production costs.

[0118] Specifically, the heating component 23 is used to transport the heat exchange medium to heat the main body 21 and / or the stirring component 22, forming a condensed heat exchange medium which is then transported to the circulation component 6 through the condensation pipeline 5.

[0119] The heat exchange medium in the circulating tank 61 of the circulating component 6 is transported to the feed tank 1 through the liquid outlet pipe 62, and then to the separator 31 of the conveying mechanism 3 through the liquid outlet branch pipe 63.

[0120] In this manner, the heat exchange medium in the circulating tank 61 is transported to the feed tank 1 through the liquid outlet pipe 62 to provide the necessary solvent for the material to be treated, reducing the need for additional water from external equipment and saving production costs. The heat exchange medium in the circulating tank 61 is transported to the separator 31 of the conveying mechanism 3 through the liquid outlet pipe 62 and the liquid outlet branch pipe 63 to provide the separator 31 with the water needed to wash the material to be treated. This ensures the washing effect while reducing the need for additional water from external equipment, thus saving production costs.

[0121] In one embodiment, when heating and drying the material to be treated using the heating component 23, the following steps are also included:

[0122] The overflow of the upper clear liquid in the separator 31 of the conveying mechanism 3 is transported to the circulation tank 61 through the overflow pipe 65.

[0123] After the material to be treated is washed and settled by the separator 31, the clear liquid on top of the separator 31 is located above the separator 31, while the solids are deposited at the bottom of the separator 31, achieving solid-liquid separation in one step. As the liquid content of the material to be treated gradually increases, when the liquid content reaches the preset level, the water in the separator 31 overflows into the circulation tank 61, realizing water recycling and avoiding water waste.

[0124] The pretreatment device of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0125] Example 1

[0126] Using the saturated activated carbon from Example 18 of CN1292072C as the raw material for regeneration pretreatment, the specific steps are as follows:

[0127] (1) Add saturated granular carbon and water into feed tank 1 at a solid-liquid ratio of 1kg:8L to obtain the material to be processed;

[0128] (2) The material to be processed enters the separator 31 to settle. After settling, the bottom solution in the separator 31 is transported to the drying mechanism 2 through the spiral structure 33. The overflowing upper clear liquid enters the circulation tank through the overflow pipe 65 for collection and flows back to the feed tank 1.

[0129] The rotation speed of the spiral structure 33 is 10 rpm, and the water content of the material after the secondary solid-liquid separation by the spiral structure 33 is 58 wt%.

[0130] (3) The material after secondary solid-liquid separation by spiral structure 33 enters the drying unit 2 for drying;

[0131] The stirring component 22 rotates at 10 rpm, the heat exchange medium (steam) pressure is 0.40 MPa, the steam flow rate is 0.4 MPa, and the moisture content of the material after drying by the drying unit 2 is 20 wt%.

[0132] It should be noted that the embodiments of this utility model are merely one example of the principles employed by the present utility model, as shown in the accompanying drawings and described herein. Those skilled in the art will clearly understand that the principles of this utility model are not limited to any details or components of the apparatus shown in the accompanying drawings or described in the specification.

[0133] It should be understood that this invention is not limited to the detailed structure and arrangement of the components described herein. This invention can have other embodiments and can be implemented and performed in various ways. The foregoing variations and modifications fall within the scope of this invention. It should be understood that the invention disclosed and defined herein extends to all alternative combinations of two or more individual features mentioned or apparent in the text and / or drawings. All these different combinations constitute multiple alternative aspects of this invention. The embodiments described in this specification illustrate the best known mode for implementing this invention and will enable those skilled in the art to utilize this invention.

[0134] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and exemplary embodiments are to be considered as exemplary only, and the true scope and spirit of the invention are indicated by the appended claims.

[0135] It should be understood that this utility model is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of protection of this utility model is limited only by the appended claims.

Claims

1. A pretreatment apparatus, characterized in that, include: Feed tank, used to hold materials to be processed; A drying mechanism, comprising a main body, a stirring assembly, and a heating assembly, wherein the stirring assembly is rotatably disposed within the main body, and the heating assembly is used to heat at least one of the main body and the stirring assembly; A conveying mechanism is disposed between the feed tank and the drying mechanism and communicates with the feed tank and the main body, for conveying the material to be processed in the feed tank to the main body; The discharge tank is connected to the drying mechanism and is used to contain the material dried by the drying mechanism.

2. The pretreatment apparatus according to claim 1, characterized in that, The heating assembly includes a first heating pipe for introducing a heat exchange medium, and the first heating pipe is arranged around the outer wall of the main body. And / or, the heating assembly includes a first heating pipe, the main body includes an outer cylinder and an inner cylinder that are nested together, a cavity is provided between the outer cylinder and the inner cylinder, the stirring assembly is rotatably disposed in the inner cylinder, and the first heating pipe is connected to the cavity for introducing a heat exchange medium into the cavity.

3. The pretreatment apparatus according to claim 2, characterized in that, The stirring assembly includes a rotating shaft and a disc. The rotating shaft is rotatably disposed within the main body and passes through the disc. The rotating shaft is connected to the disc. The heating assembly includes a second heating pipe connected to the rotating shaft. The second heating pipe can deliver a heat exchange medium to the disk through the rotating shaft for drying the material to be processed.

4. The pretreatment apparatus according to claim 3, characterized in that, The stirring assembly also includes: A lifting plate is positioned at the edge of the disc; The thickness of the disk along the axial direction of the rotating shaft gradually decreases from the center to the edge.

5. The pretreatment apparatus according to claim 3, characterized in that, The stirring assembly also includes: A feeder is disposed on the edge of the disc. The main body has an inlet and an outlet at both ends along its axial direction. The inlet is connected to the conveying mechanism, and the outlet is connected to the discharge tank. The feeder is disposed at an angle to the axial direction of the main body, so that the material to be processed in the main body can move from the inlet to the outlet.

6. The pretreatment apparatus according to any one of claims 1-5, characterized in that, The conveying mechanism includes: A separator, connected to the feed tank, is used for cleaning the material to be processed and for primary solid-liquid separation; A conveying body, one end of which is connected to the bottom of the separator, and the other end of which is connected to the drying mechanism; A spiral structure is rotatably mounted within the conveying body. The axial direction of the spiral structure is at an angle to the axial direction of the main body, allowing the material after solid-liquid separation by the separator to undergo secondary solid-liquid separation and be conveyed to the drying mechanism via the spiral structure.

7. The pretreatment apparatus according to any one of claims 1-5, characterized in that, Also includes: A condenser pipe, which is connected to at least one of the main body and the stirring assembly, is used to transport the condensed heat exchange medium.

8. The pretreatment apparatus according to claim 7, characterized in that, Also includes: The circulation component is connected to the conveying mechanism, the condenser pipe and the feed tank, so that the heat exchange medium output from the conveying mechanism and the condenser pipe flows back to the conveying mechanism and the feed tank respectively through the circulation component.

9. The pretreatment apparatus according to claim 8, characterized in that, The loop component includes: The circulation tank is connected to the condensate pipeline; The liquid outlet pipeline has one end connected to the circulation tank and the other end connected to the feed tank. A liquid outlet branch pipe, one end of which is connected to the liquid outlet pipeline and the other end of which is connected to the conveying mechanism; A circulating pump is used to transport the heat exchange medium in the circulating tank to the feed tank through the liquid outlet pipeline, and to the conveying mechanism through the liquid outlet branch pipe.

10. The pretreatment apparatus according to claim 9, characterized in that, The loop component also includes: An overflow pipe is provided, with one end connected to the conveying mechanism and the other end connected to the circulation tank. The upper clear liquid overflowing from the conveying mechanism is transported to the circulation tank through the overflow pipe.

11. The pretreatment apparatus according to any one of claims 1-5, characterized in that, Also includes: A circulation pipeline, one end of which is connected to the discharge tank and the other end of which is connected to the heating component, wherein the discharge tank supplies heat exchange medium to the heating component through the circulation pipeline.

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