A hydrogenation filter used in stannous chloride production

Abstract

The utility model relates to the technical field of filters, and discloses a hydrogenation filter used in stannous chloride production, including a filter body, an upper cover and a discharge end, wherein a first head is arranged on the top of the filter body, a second head is arranged on the bottom of the upper cover, and the first head and the second head are connected by bolts; a side wall of the discharge end is connected with a hydrogenation port, a slag discharge port is connected at the bottom, and a side wall of the slag discharge port is connected with a feed port; a plurality of groups of filter channels are distributed in the filter body, and a filter port is provided at the bottom of the filter channel. The detachable mounting plate and filter element in the utility model can be quickly installed and disassembled, so as to facilitate rapid flushing and cleaning of the internal structure of the filter body, and the catalyst can be pressed back into the kettle from the slag discharge port at the bottom for recovery and application, which greatly reduces the loss of the catalyst, and thus has a high social use value and application prospect.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a hydrogenation filter used in the production of stannous chloride. Background Art

[0002] In the field of stannous chloride production, the development of process technology is crucial to the sustainable development of the industry. There are many problems that are difficult to ignore when using traditional old processes to produce stannous chloride. The old process will produce a large amount of aluminum chloride acid wastewater during the production process. These wastewaters are not only complex in composition and extremely difficult to treat, but also costly to treat. From an environmental protection perspective, if they are directly discharged without effective treatment, they will cause serious pollution to the ecological environment such as soil and water bodies, destroy the ecological balance, affect the survival and reproduction of surrounding organisms, and pose a huge threat to environmental safety. At the same time, the treatment of these acidic wastewaters requires a lot of manpower, material resources and financial resources, which increases the operating costs of enterprises and reduces the economic benefits of enterprises.

[0003] In addition, the old process will also release hydrogen during the production process. Hydrogen is a flammable and explosive gas. In the production environment, the presence of hydrogen greatly increases the risk of reaction. Once hydrogen leaks and reaches a certain concentration, it is very easy to cause an explosion accident when encountering inducements such as fire or static electricity, which seriously threatens the life safety of production personnel. It may also cause serious damage to production equipment, causing huge economic losses, and even forcing the entire production activity to be interrupted, bringing immeasurable negative impacts to the company. With the continuous enhancement of environmental awareness and the increasingly stringent environmental protection regulations, these disadvantages of traditional old processes have become more prominent and urgently need to be improved.

[0004] In recent years, the research and development of new processes has become a research hotspot in the field of stannous chloride production. Among them, the new process of reducing stannous chloride by hydrogenation of tin tetrachloride under the catalytic action of 1% palladium on carbon has shown significant advantages. During the reaction process, this new process reduces the generation of pollutants from the source, truly achieving a cleaner and more environmentally friendly process, achieving the goal of zero waste, greatly reducing the risk of environmental pollution, and conforming to the concept of green chemistry and sustainable development.

[0005] In the production process of the new process, the main equipment hydrogenation filter plays a key role. Its unique double-layer structure design realizes the efficient separation of stannous chloride hydrochloric acid solution and palladium carbon catalyst. Stannous chloride hydrochloric acid solution can be smoothly pressed out from the top of the filter, while the palladium carbon catalyst is left in the filter, and then the catalyst is pressed back into the kettle from the bottom for recycling. This design allows the palladium carbon catalyst to be fully utilized, truly achieving zero catalyst loss, which not only improves the efficiency of catalyst use and reduces production costs, but also reduces the environmental pollution problems that may be caused by catalyst disposal.

[0006] This application adopts a modular design concept, designing the various components of the filter into modules that can be quickly disassembled and assembled. When cleaning or replacing components is required, the operator can quickly complete the operation. At the same time, a backwash nozzle is set inside the filter, which can quickly clean the filter during the operation of the equipment to maintain the good performance of the filter. This structural improvement solves the problem of inconvenient equipment maintenance and long maintenance time affecting production efficiency, and improves the overall operation efficiency of the equipment. Utility Model Content

[0007] In order to solve the problems mentioned in the above background technology, the utility model provides a hydrogenation filter used in the production of stannous chloride.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A hydrogenation filter used in stannous chloride production, comprising a filter body, an upper cover and a feed end, wherein a first cover is arranged on the top of the filter body, a second cover is arranged on the bottom of the upper cover, and the first cover and the second cover are connected by bolts;

[0010] The side wall of the discharge end is connected with a hydrogenation port, the bottom is connected with a slag discharge port, and the side wall of the slag discharge port is connected with a feed port;

[0011] The filter body is provided with a plurality of filter channels, and a filter port is provided at the bottom of the filter channel; a detachable mounting plate is provided at the upper end of the filter body, and a plurality of discharge ends are provided on the inner wall of the detachable mounting plate, and a filter element is provided at the bottom of the discharge end, and the filter element extends into the filter channel;

[0012] The top of the upper cover is connected to two groups of discharge pipes, the outward extending ends of the discharge pipes are connected by connecting pipes, and discharge ports are provided at both ends of the connecting pipes; a backwash pipe is provided at the center of the top of the upper cover, and the downward extending end of the backwash pipe is connected to a spray coil, and a plurality of groups of nozzles are provided at the bottom of the spray coil.

[0013] Preferably, the filter element is composed of an inner microfiltration membrane, a U-shaped filter plate and an outer microfiltration membrane, the inner microfiltration membrane is arranged on the inner side wall of the U-shaped filter plate, and the outer microfiltration membrane is arranged on the outer side wall of the U-shaped filter plate.

[0014] Preferably, the pore sizes of the inner and outer microfiltration membranes are between .-microns.

[0015] Preferably, the number of the filtering channels, the discharge ends and the nozzles is the same, and the nozzles are aligned with the discharge ends.

[0016] Preferably, the diameter of the lower port of the filter port is larger than the diameter of the upper port.

[0017] Preferably, the diameter of the upper port of the discharge end is larger than the diameter of the lower port.

[0018] Preferably, an annular buckle is provided on the upper end wall of the filter body, and an annular buckle corresponding to the annular buckle is provided on the bottom of the detachable mounting plate.

[0019] Preferably, the feed port, slag discharge port and hydrogenation port are all provided with valves.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] 1. The utility model provides a backwashing pipeline, a spray coil and a nozzle, and after the reaction is completed, the filter channel can be backwashed, so that the catalyst residue remaining on the inner wall of the filter channel can be cleaned to the maximum extent.

[0022] 2. The detachable mounting plate and filter element in the utility model can be quickly installed and disassembled, so as to facilitate the rapid flushing and cleaning of the internal structure of the filter, and the catalyst can be pressed back into the kettle from the slag discharge port at the bottom for recovery and reuse, which greatly reduces the loss of the catalyst, thus having a high social use value and application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the structure of the utility model;

[0025] Figure 2 It is a top view of the utility model;

[0026] Figure 3 This is a schematic diagram of the installation structure of the backwashing pipeline and the discharge pipeline of the utility model;

[0027] Figure 4 This is a schematic diagram of the internal structure of the filter body of the utility model;

[0028] Figure 5 For this utility model Figure 4 A schematic diagram of the structure enlargement in the middle;

[0029] Figure 6 This is a schematic diagram of the internal structure of the filter element of the utility model;

[0030] In the figure: filter body 1, first head 101, filter channel 102, filter port 103, annular buckle 104, detachable mounting plate 105, discharge end 106, filter element 107, inner microfiltration membrane 1071, U-shaped filter plate 1072, outer microfiltration membrane 1073, upper cover 2, second head 201, backwash pipe 202, discharge pipe 203, connecting pipe 204, discharge port 205, spray coil 206, nozzle 207, discharge end 3, feed port 301, slag discharge port 302, hydrogenation port 303. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Example

[0033] Reference Figure 1-Figure 6 A hydrogenation filter used in stannous chloride production comprises a filter body 1, an upper cover 2 and a feed end 3, wherein a first end cap 101 is arranged on the top of the filter body 1, and a second end cap 201 is arranged on the bottom of the upper cover 2, and the first end cap 101 and the second end cap 201 are connected by bolts, so as to facilitate installation and removal of the filter components in the filter body 1;

[0034] The side wall of the discharge end 3 is connected with a hydrogenation port 303, hydrogen enters the discharge end 3 through the hydrogenation port 303, and is mixed with the material entering through the feed port 301, and further reacts with the unreacted tin tetrachloride in the material to obtain stannous chloride, the bottom is connected with a slag discharge port 302, and the side wall of the slag discharge port 302 is connected with the feed port 301; the feed port 301, the slag discharge port 302, and the hydrogenation port 303 are all provided with valves, and can be individually controlled in flow rate;

[0035] Several groups of filter channels 102 are distributed in the filter body 1. A filter port 103 is provided at the bottom of the filter channel 102. The lower port diameter of the filter port 103 is larger than the upper port diameter. A detachable mounting plate 105 is provided at the upper end of the filter body 1. Several groups of discharge ports 106 are distributed on the inner wall of the detachable mounting plate 105. The upper port diameter of the discharge port 106 is larger than the lower port diameter, which is conducive to the entry of materials and facilitates filtering. A filter element 107 is provided at the bottom of the discharge port 106. The filter element 107 extends into the filter channel 102.

[0036] The top of the upper cover 2 is connected with two groups of discharge pipes 203, and the outward extending ends of the discharge pipes 203 are connected by connecting pipes 204, and discharge ports 205 are provided at both ends of the connecting pipes 204; a backwash pipe 202 is provided at the center of the top of the upper cover 2, and the downward extending end of the backwash pipe 202 is connected with a spray coil 206, and a plurality of groups of nozzles 207 are provided at the bottom of the spray coil 206.

[0037] The number of the filter channel 102, the discharge end 106 and the nozzle 207 is the same, and the nozzle 207 is aligned with the discharge end 106. After the reaction is completed, the filter channel 102 can be backwashed through the backwashing pipe 202, the spray coil 206 and the nozzle 207, so as to maximize the cleaning of the catalyst residue remaining on the inner wall of the filter channel 102. Method 1: In the case of not disassembling, the filter element 107 can be directly flushed through the nozzle 207; Method 2: Disassemble the first head 101 and the second head 201, and take out the detachable mounting plate 105, so as to flush and clean the filter channel 102.

[0038] The filter element 107 is composed of an inner microfiltration membrane 1071, a U-shaped filter plate 1072 and an outer microfiltration membrane 1073. The inner microfiltration membrane 1071 is arranged on the inner side wall of the U-shaped filter plate 1072, and the outer microfiltration membrane 1073 is arranged on the outer side wall of the U-shaped filter plate 1072. The pore sizes of the inner microfiltration membrane 1071 and the outer microfiltration membrane 1073 are between 0.1 and 10 microns. The microfiltration membrane can intercept palladium carbon catalyst particles with larger particle sizes, and allow stannous chloride hydrochloric acid solution to pass through, thereby achieving filtration separation, and the filtered catalyst particles are discharged to the outside through the slag discharge port 302 and recycled, greatly reducing the loss of the catalyst.

[0039] The upper end wall of the filter body 1 is provided with an annular buckle 104, and the bottom of the detachable mounting plate 105 is provided with an annular groove corresponding to the annular buckle 104. When installing and using, firstly, the annular groove at the bottom of the detachable mounting plate 105 is snapped into the annular buckle 104, and the filter element 107 is allowed to enter the filter channel 102, thereby completing the filtering and separation of the catalyst. The stannous chloride hydrochloric acid solution with catalyst particles enters the material end 3 through the feed port 301, and enters the filter channel 102 upward. After filtering and separation by the filter element 107, the stannous chloride hydrochloric acid solution is pressed out from the discharge pipe 203 at the top of the filter, and the palladium carbon catalyst remains in the filter channel 102 of the filter. Then, the catalyst is pressed back into the kettle from the slag discharge port 302 at the bottom for recovery and reuse, thereby greatly reducing the loss of the catalyst.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hydrogenation filter used in stannous chloride production, comprising a filter body (1), an upper cover (2) and a feed end (3), wherein a first cover (101) is arranged on the top of the filter body (1), a second cover (201) is arranged on the bottom of the upper cover (2), and the first cover (101) and the second cover (201) are connected by bolts, characterized in that: The side wall of the discharge end (3) is connected to a hydrogenation port (303), the bottom is connected to a slag discharge port (302), and the side wall of the slag discharge port (302) is connected to a feed port (301); A plurality of groups of filter channels (102) are distributed in the filter body (1), and a filter port (103) is provided at the bottom of the filter channel (102); a detachable mounting plate (105) is provided at the upper end of the filter body (1), and a plurality of groups of discharge ends (106) are distributed on the inner wall of the detachable mounting plate (105); a filter element (107) is provided at the bottom of the discharge end (106), and the filter element (107) extends into the filter channel (102); The top of the upper cover (2) is connected to two groups of discharge pipes (203), and the outwardly extending ends of the discharge pipes (203) are connected via connecting pipes (204), and both ends of the connecting pipes (204) are provided with discharge ports (205); a backwash pipe (202) is provided at the center of the top of the upper cover (2), and the downwardly extending end of the backwash pipe (202) is connected to a spray coil (206), and a plurality of groups of spray heads (207) are provided at the bottom of the spray coil (206).

2. A hydrogenation filter for use in stannous chloride production according to claim 1, characterized in that: The filter element (107) is composed of an inner microfiltration membrane (1071), a U-shaped filter plate (1072), and an outer microfiltration membrane (1073); the inner microfiltration membrane (1071) is arranged on the inner side wall of the U-shaped filter plate (1072), and the outer microfiltration membrane (1073) is arranged on the outer side wall of the U-shaped filter plate (1072).

3. A hydrogenation filter for use in stannous chloride production according to claim 2, characterized in that: The pore sizes of the inner microfiltration membrane (1071) and the outer microfiltration membrane (1073) are between 0.1 and 10 microns.

4. A hydrogenation filter for use in stannous chloride production according to claim 1, characterized in that: The number of the filtering channels (102), the discharge ends (106) and the nozzles (207) is the same, and the nozzles (207) are aligned with the discharge ends (106).

5. A hydrogenation filter for use in stannous chloride production according to claim 1, characterized in that: The diameter of the lower port of the filter port (103) is larger than the diameter of the upper port.

6. A hydrogenation filter for use in stannous chloride production according to claim 1, characterized in that: The diameter of the upper end of the discharge end (106) is larger than the diameter of the lower end.

7. A hydrogenation filter for use in stannous chloride production according to claim 1, characterized in that: An annular buckle (104) is provided on the upper end wall of the filter body (1), and an annular buckle groove corresponding to the annular buckle (104) is provided on the bottom of the detachable mounting plate (105).

8. A hydrogenation filter for use in stannous chloride production according to claim 1, characterized in that: The feed port (301), the slag discharge port (302), and the hydrogenation port (303) are all provided with valves.

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