Preparation device of crystalline aluminum chloride

Abstract

The invention provides a preparation device of crystalline aluminum chloride, the preparation device of crystalline aluminum chloride comprises a reaction kettle and a vacuum belt filter, and a crystalline aluminum chloride slurry outlet of the reaction kettle is connected to a feed port of the vacuum belt filter. According to the preparation device of the crystalline aluminum chloride, the crystalline aluminum chloride can be continuously and rapidly dehydrated, and the production efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of production of crystalline aluminum chloride, and in particular to a device for preparing crystalline aluminum chloride. Background Art

[0002] Crystalline aluminum chloride is an important inorganic chemical product, mainly used in the treatment of drinking water, industrial water, and purification of oily wastewater. It has a wide range of applications in printing and dyeing, medicine, leather, oil fields, papermaking, precision casting, etc. Therefore, the demand for crystallized aluminum chloride is large, and the preparation of crystallized aluminum chloride has received great attention in the market.

[0003] At present, domestic manufacturers of crystalline aluminum chloride all use suction filtration tanks to complete solid-liquid separation and manually load materials, that is, after the concentrated materials are placed in the suction filtration tank, vacuum filtration is started, and after the filtration is completed, the materials in the tank are manually transferred out and packaged. However, the use of suction filtration tanks has many disadvantages: the filtration efficiency of the suction filtration tank is low. Taking each batch of three tons of finished materials as an example, the filtration time takes about 3-4 hours, which is a long time; the filtered materials are in the suction filtration tank, so they need to be manually unloaded and packaged. Three tons of finished materials require 3 people for 3 hours, or a total of 9 hours of labor, and the labor cost is high; the filtration and unloading packaging time is long, so each reactor needs to be equipped with a suction filtration tank, which requires more equipment; because there are more batches of materials, the suction filtration tank occupies a large space. Therefore, it is urgent to improve the preparation device of crystalline aluminum chloride. Summary of the invention

[0004] In view of the above problems existing in the prior art, the embodiments of the present application propose a device for preparing crystalline aluminum chloride, which can at least achieve continuous and rapid dehydration of crystalline aluminum chloride, thereby improving production efficiency.

[0005] According to one aspect of the present application, a device for preparing crystalline aluminum chloride is provided, which includes a reactor and a vacuum belt filter, wherein the crystallized aluminum chloride slurry outlet of the reactor is connected to the feed port of the vacuum belt filter.

[0006] In some embodiments, the reactor comprises at least two reactors, and the crystallized aluminum chloride slurry outlets of the reactors are connected in parallel and converged to the feed inlet of the vacuum belt filter.

[0007] In some embodiments, the adhesive tape of the vacuum belt filter is an anti-corrosion adhesive tape, and the filter cloth of the vacuum belt filter is an anti-corrosion filter cloth.

[0008] In some embodiments, the tape of the vacuum belt filter is rubber or PVC tape, and the filter cloth of the vacuum belt filter is polyester filter cloth or dacron filter cloth.

[0009] In some embodiments, the vacuum belt filter includes a fixed vacuum box and an adhesive belt moving on the vacuum box, and the vacuum box, the adhesive belt, and an annular friction belt therebetween constitute a space for containing a sealed liquid.

[0010] In some embodiments, the drain pipe of the vacuum tank for collecting filtrate of the vacuum belt filter is connected to the vacuum box through a transfer pump connection conduit; the flushing water pipeline for collecting washing water of the vacuum belt filter is connected to the sewage treatment system through a separate pipeline.

[0011] In some embodiments, the drain pipe is also connected to the reactor.

[0012] In some embodiments, the preparation device of crystalline aluminum chloride also includes a material receiving and unloading device arranged below the discharge end of the vacuum belt filter, and the material receiving and unloading device includes a silo and a feeder stacked up and down and connected.

[0013] In some embodiments, the shape of the silo is a prism that is wide at the top and narrow at the bottom, and the outlet end of the feeder is conical.

[0014] In some embodiments, the material of the silo and feeder is polypropylene.

[0015] The beneficial technical effect of the present invention is that the preparation device of the crystallized aluminum chloride of the embodiment of the present application includes a vacuum belt filter, which can at least achieve continuous and rapid dehydration of the crystallized aluminum chloride slurry, thereby improving production efficiency. In the preparation device of the crystallized aluminum chloride of the embodiment of the present application, multiple reactors can share a vacuum belt filter, which can at least reduce the number of equipment and reduce the space occupied by the device. The preparation device of the crystallized aluminum chloride of the embodiment of the present application improves the connection structure of the pipeline, which can at least prevent the washing water used for washing from entering the vacuum tank for collecting the filtrate, and uses the filtrate as sealing water to form an effective vacuum, which enters the vacuum tank together with the filtrate, thereby ensuring the quality of the filtrate and allowing the filtrate to be recycled. The preparation device of the crystallized aluminum chloride of the embodiment of the present application adds a material receiving and unloading device, which can at least automatically receive the material and complete manual packaging at the same time, greatly speeding up the production speed and reducing manpower consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. It is worth noting that according to the standard practice of the industry, the various components are not drawn to scale and are only used for illustration purposes. In fact, for the clarity of discussion, the size of each component can be arbitrarily increased or reduced.

[0017] Figure 1 It is a schematic diagram of a device for preparing crystalline aluminum chloride according to an embodiment of the present application.

[0018] Figure 2 It is a schematic diagram of the main structure of a vacuum belt filter according to an embodiment of the present application.

[0019] Figure 3 It is a schematic diagram of a device for preparing crystalline aluminum chloride according to another embodiment of the present application. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0021] The following disclosure provides many different embodiments or examples for realizing different features of the provided subject matter. Specific examples of components and arrangements will be described below to simplify the present invention. Of course, these are merely examples and are not intended to limit the present invention. For example, in the following description, forming a first component above or on a second component may include an embodiment in which the first component and the second component are in direct contact, and may also include an embodiment in which an additional component is formed between the first component and the second component so that the first component and the second component may not be in direct contact. Moreover, the present invention may repeatedly refer to numbers and / or letters in various examples. This repetition is only for simplicity and clarity, and does not itself represent the relationship between the various embodiments and / or configurations discussed.

[0022] In addition, the embodiments in the present application and the features in the embodiments may be combined with each other in the absence of conflicts. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be understood that the specific structures shown in the drawings are only for the sake of convenience of explanation and are not intended to limit the present application. When describing a specific figure, other structures not described in the drawings may be provided according to actual needs and are not intended to limit the present application.

[0023] Figure 1 It is a schematic diagram of a device for preparing crystalline aluminum chloride according to an embodiment of the present application. Figure 2 A vacuum belt filter 10 (see Figure 1 ) is a schematic diagram of the main structure of the Figure 1 and Figure 2As shown, according to some embodiments of the present application, a device for preparing crystallized aluminum chloride is provided, and the device for preparing crystallized aluminum chloride includes a reactor 1 and a vacuum belt filter 10, and the crystallized aluminum chloride slurry outlet (not shown, only indicated by an arrow) of the reactor 1 is connected to the feed port 18 of the vacuum belt filter 10. Among them, those skilled in the art are familiar with that the vacuum belt filter 10 can also be called: belt vacuum filter, vacuum belt dehydrator, vacuum belt dehydrator, etc. It should be understood that "connected to" can be a direct physical connection or an indirect connection. The device for preparing crystallized aluminum chloride of the embodiment of the present application includes a vacuum belt filter 10, which can at least achieve continuous and rapid dehydration of the crystallized aluminum chloride slurry, thereby improving production efficiency.

[0024] In some embodiments, the reactor 1 includes at least two reactors 1, and the crystallized aluminum chloride slurry outlets of the reactors 1 are connected in parallel to the feed port 18 of the vacuum belt filter 10. Multiple reactors 1 can share one vacuum belt filter 10, instead of each reactor being equipped with a suction filtration tank as in the prior art, which can reduce the number of equipment and the space occupied by the device.

[0025] In some embodiments, the adhesive tape 23 of the vacuum belt filter 10 is an anti-corrosion adhesive tape, and the filter cloth 24 of the vacuum belt filter 10 is an anti-corrosion filter cloth. The use of anti-corrosion adhesive tape and anti-corrosion filter cloth can solve the corrosion problem caused by the acidity of the crystallized aluminum chloride slurry, and can increase / extend the service life of the device. In some embodiments, the adhesive tape 23 of the vacuum belt filter 10 can be rubber or PVC adhesive tape, and the filter cloth 24 of the vacuum belt filter 10 can be polyester filter cloth or polyester filter cloth. It should be understood that the rubber, PVC adhesive tape, polyester filter cloth, and polyester filter cloth can be coated with an anti-corrosion coating, and the present application is not limited to this.

[0026] For the purpose of illustration and not intended to limit the present application, Figure 1 and Figure 2The specific structure of the vacuum belt filter 10 of some embodiments is described. The vacuum belt filter 10 can be composed of a fixed vacuum box 11, a driving device (not shown), a driving roller 25, a tape 23, a tape support platform (not shown), a filter cloth 24, a feed hopper / feed port 18, a filter cloth deviation adjustment device (not shown), a rinsing device 19, a washing device 20, a vacuum pump 13, a vacuum tank 12, a frame (not shown) and other components. The vacuum belt filter 10 can fully utilize the gravity of the material and the vacuum suction force to achieve solid-liquid separation. Its working principle is as follows: the annular tape 23 is driven by the driving device and driven by the driving roller 25 to move relative to the fixed vacuum box 11. The filter cloth 24 is laid on the tape 23 and runs synchronously with it. The tape 23 has a central hole that runs through the top and bottom. The central hole of the tape 23 is aligned with the filtration hole of the vacuum box 11. When the vacuum box 11 is connected to the vacuum system, that is, when the vacuum pump 13 is turned on, a vacuum filtration area is formed on the tape 23. The required liquid from the reactor 1 is removed. The slurry to be filtered is evenly distributed on the filter cloth 24 through the feed port 18. Under the action of vacuum, the filtrate passes through the filter cloth 24, is collected through the transverse grooves (if any) on the adhesive tape 23, and passes through the central hole of the adhesive tape 23 and the suction hole of the vacuum box 11 to enter the vacuum box 11 (that is, the vacuum chamber). The solid particles are trapped to form a filter cake. The liquid entering the vacuum flows into the liquid collecting main pipe 31 through the conduit 30, is collected in the vacuum tank 12 and then discharged; the filter cake moves with the filter cloth 24, and finally the filter cloth 24 is separated from the adhesive tape 23, and the filter cake is discharged at the filter cake unloading roller 26. Among them, the filter cake moving with the filter cloth 24 can be washed by opening the rinsing device 19, and the filter cloth 24 and the adhesive tape 23 can be washed by opening the washing device 20. The filter cloth 24 and the adhesive tape 23 can be washed, and the filter cloth 24 with the filter cake removed is regenerated after washing. Among them, line 41 shows that process water (the source of process water is not limited) is used as washing water to wash the filter cloth 24 and the tape 23, and as sealing water to enter the vacuum box 11 for vacuum liquid sealing to form an effective vacuum. The washing water is collected and flows into the flushing water pipeline 32. After the sealing water enters the vacuum box 11, it flows into the liquid collecting main pipe 31 through the conduit 30 with the filtrate.

[0027] In some embodiments, the vacuum belt filter 10 includes a fixed vacuum box 11 and a tape 23 moving on the vacuum box 11. The vacuum box 11, the tape 23, and an annular friction belt (not shown) therebetween constitute a space for accommodating a sealing liquid. The liquid, such as water, that is, the sealing water can form a water film on the vacuum box 11 to support the tape 23, thereby reducing the friction resistance of the tape 23 during operation.

[0028] refer to Figure 3As shown, in some embodiments, the drain pipe 33 of the vacuum tank 12 for collecting filtrate of the vacuum belt filter 10 can be connected to the conduit 34 to the vacuum box 11 through a transfer pump (not shown), and the flushing water pipeline 32 for collecting washing water of the vacuum belt filter 10 can be disconnected from the vacuum tank 12, and the flushing water pipeline 32 is connected to the sewage treatment system (not shown) through a separate pipeline. In the embodiment of the present application, the drain pipe 33 is connected to the conduit 34 to the vacuum box 11 of the vacuum belt filter 10 through a transfer pump, and a liquid for liquid sealing, that is, the filtrate of the crystallized aluminum chloride slurry, can be provided to the vacuum box 11, and enter the vacuum tank 12 together with the filtrate filtered in real time without bringing in new water. It should be understood that Figure 3 and Figure 1 In contrast, the pipeline for adding process water to the pipeline of the vacuum box 11 is disconnected, and the pipeline of process water is no longer connected to the vacuum box 11. The process water is only used to wash the filter cloth 24 and the tape 23. The washing water is collected in the flushing water pipeline 32, and the flushing water pipeline 32 is no longer connected to the vacuum tank 12 (the washing water no longer enters the vacuum tank 12) but is directly discharged to the sewage treatment system through a separate pipeline. The preparation device of the crystallized aluminum chloride of the embodiment of the present application can at least make the filtrate of the crystallized aluminum chloride collected in the vacuum tank 12 pure filtrate, which can ensure the quality of the filtrate, so that the filtrate can be recycled and reused, avoiding the increase of energy consumption and the increase of processing cost due to the "contamination" of the filtrate by sealing water or washing water.

[0029] In some embodiments, the drain pipe 33 can also be connected to the reactor 1 to directly realize the recycling of the filtrate. It should be understood that the drain pipe 33 can also be connected to other equipment to recycle the filtrate.

[0030] In some embodiments, the preparation device of crystalline aluminum chloride may further include a vacuum belt filter 10 disposed at the discharge end (e.g., Figure 2 The material receiving and unloading device 50 is provided below the filter cake unloading roller in the filter cake unloading roller, and the material receiving and unloading device 50 includes a stacked and connected silo 14 and a feeder 15. In some embodiments, the silo 14 may be in the shape of a prism that is wide at the top and narrow at the bottom, and the outlet end of the feeder 15 may be conical. Figure 3 As shown, the packaging bag 16 can be directly connected to the bottom of the feeder 15, and with manual operation, the material can be quickly discharged and packaged. In some embodiments, a weighing scale 17 can be set to directly weigh the weight of the packaging bag 16 to achieve standardized operation. The preparation device of the crystallized aluminum chloride in the embodiment of the present application adds a material receiving and unloading device 50, which can directly and automatically receive the material, and at the same time complete the manual packaging, improve the efficiency of post-processing discharging and packaging, and reduce manpower consumption.

[0031] In some embodiments, the material of the silo 14 and the feeder 15 can be polypropylene. Using a smooth polypropylene plate to make the material layer 14 and the feeder 15 can make the process of collecting the crystallized aluminum chloride smoother and reduce the probability of the crystallized aluminum chloride sticking to the side walls of the silo 14 and the feeder 15.

[0032] The preparation device of the crystalline aluminum chloride in the embodiment of the present application includes a vacuum belt filter and has the following advantages compared with the suction filtration tank used in the prior art:

[0033] 1. Reduce labor costs: Adding a vacuum belt filter to post-process discharging and packaging will greatly improve the efficiency and reduce the labor hours for post-processing discharging and packaging.

[0034] 2. Increase actual production capacity while reducing production costs: The existing process of crystallizing aluminum chloride production capacity is limited by post-processing equipment and labor, and cannot significantly increase production capacity.

[0035] 3. Reduce the number of post-processing equipment and free up workshop space: The efficiency of post-processing discharging and packaging will be greatly improved by using a vacuum belt filter. Multiple reactors can use one vacuum belt filter to greatly reduce the number of equipment and free up workshop space.

[0036] 4. Improve the level of mechanization and complete continuous production.

[0037] 5. Reduce occupational health hazards: The vacuum belt filter and material receiving and unloading device make the main operation mechanized, which will greatly reduce the harm of hydrochloric acid gas to the human body.

[0038] 6. The connection structure of the pipeline has been improved to reduce energy consumption and realize the recycling of the filtrate. Without increasing the production cost, the vacuum belt filter can be truly applied to the preparation and production of crystalline aluminum chloride.

[0039] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A device for preparing crystalline aluminum chloride, characterized in that: include: Reactors and vacuum belt filters; The crystallized aluminum chloride slurry outlet of the reactor is connected to the feed port of the vacuum belt filter.

2. The device for preparing crystalline aluminum chloride according to claim 1, characterized in that: The reactor comprises at least two reactors, and the crystallized aluminum chloride slurry outlets of the reactors are connected in parallel and converged to the feed inlet of the vacuum belt filter.

3. The device for preparing crystalline aluminum chloride according to claim 1, characterized in that: The adhesive tape of the vacuum belt filter is an anti-corrosion adhesive tape, and the filter cloth of the vacuum belt filter is an anti-corrosion filter cloth.

4. The device for preparing crystalline aluminum chloride according to claim 3, characterized in that: The adhesive tape of the vacuum belt filter is rubber or PVC adhesive tape, and the filter cloth of the vacuum belt filter is polyester filter cloth or terylene filter cloth.

5. The device for preparing crystalline aluminum chloride according to claim 1, characterized in that: The vacuum belt filter comprises a fixed vacuum box and an adhesive belt moving on the vacuum box. The vacuum box, the adhesive belt and the annular friction belt therebetween constitute a space for accommodating a sealed liquid.

6. The device for preparing crystalline aluminum chloride according to claim 5, characterized in that: The drain pipe of the vacuum tank for collecting filtrate of the vacuum belt filter is connected to the vacuum box through a transfer pump connection conduit; the flushing water pipeline for collecting washing water of the vacuum belt filter is connected to the sewage treatment system through a separate pipeline.

7. The device for preparing crystalline aluminum chloride according to claim 6, characterized in that: The drain pipe is also connected to the reactor.

8. The device for preparing crystalline aluminum chloride according to claim 1 or 5, characterized in that: It also includes a material receiving and unloading device arranged below the discharge end of the vacuum belt filter, and the material receiving and unloading device includes a material bin and a feeder which are stacked and connected up and down.

9. The device for preparing crystalline aluminum chloride according to claim 8, characterized in that: The shape of the silo is a prism that is wide at the top and narrow at the bottom, and the outlet end of the feeder is conical.

10. The device for preparing crystalline aluminum chloride according to claim 9, characterized in that: The material of the silo and the feeder is polypropylene.

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