Reaction kettle for preparing palladium trifluoroacetate

Abstract

The reaction kettle comprises a kettle body, the kettle body comprises an inner cylinder and an outer cylinder, water jackets for hot water circulation are arranged between the inner cylinder and the outer cylinder at intervals, a hot water inlet pipe and a water outlet pipe are arranged on the upper portion of the kettle body, and the hot water inlet pipe is connected with a vertical water channel extending downwards after entering the kettle body. Hot water enters from the hot water inlet pipe, flows to the water jacket at the bottom layer through the vertical water channel, circulates for a circle, then enters the water jacket at the upper layer through the water port, circulates in sequence, and finally flows out from the water outlet pipe; an end socket is arranged at the top of the kettle body, a first connecting pipe and a second connecting pipe are arranged on the end socket, and a liquid adding device is arranged on one side of the kettle body below the end socket; a gas stirring device is arranged in the center of the bottom of the kettle body; a discharge pipe is arranged on one side of the bottom of the kettle body. According to the device, the reaction conditions for preparing palladium trifluoroacetate can be obviously improved, reaction substances can be uniformly mixed, the temperature is uniform, the reaction speed is accelerated, and the loss of palladium is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of precious metal processing, in particular to a reaction kettle for preparing palladium trifluoroacetate. Background Art

[0002] In the field of precious metal chemical processing, especially in the preparation of palladium (Pd) compounds, the control of reaction conditions is crucial. The traditional method for preparing palladium trifluoroacetate involves reacting palladium powder with concentrated nitric acid, glacial acetic acid and sodium trifluoroacetate in sequence. This process requires precise temperature control and continuous stirring to ensure the completeness and uniformity of the chemical reaction. However, existing reactors often have some problems, such as uneven material mixing, uneven temperature control, slow reaction speed, etc., which may lead to low reaction efficiency, low product activity, and loss of raw palladium. Utility Model Content

[0003] To achieve the above purpose, the utility model provides a reaction kettle for preparing palladium trifluoroacetate, which can significantly improve the reaction conditions for preparing palladium trifluoroacetate, make the reaction materials mix evenly, make the temperature uniform, accelerate the reaction speed, and reduce the palladium loss.

[0004] The utility model provides the following technical scheme: a reaction kettle for preparing palladium trifluoroacetate, comprising a kettle body, the kettle body comprising an inner cylinder and an outer cylinder, a plurality of circles of round steel are arranged between the inner cylinder and the outer cylinder, a water jacket for hot water circulation is arranged between adjacent round steels, a hot water inlet pipe and a water outlet pipe are arranged on the upper part of the kettle body, the hot water inlet pipe is connected to a vertical water channel extending downward after entering the kettle body, the outlet of the vertical water channel is connected to the water jacket of the bottom layer, water inlets for the inflow or outflow of two adjacent layers of water jackets are arranged at intervals on both sides of the vertical water channel, hot water enters from the hot water inlet pipe, flows through the vertical water channel to the water jacket of the bottom layer for one cycle, and then enters the water jacket of the upper layer through the water inlet, circulates in sequence, and finally flows out from the water outlet pipe; a head is arranged on the top of the kettle body, a first connecting pipe and a second connecting pipe are arranged on the head, and a liquid adding device is arranged on one side of the kettle body below the head; a gas stirring device is arranged at the center of the bottom of the kettle body, and a discharge pipe is arranged on one side of the bottom of the kettle body.

[0005] Furthermore, the liquid adding device comprises a liquid adding pipe and a liquid collecting pipe, the liquid adding pipe and the liquid collecting pipe are connected via a second flange, the liquid collecting pipe is arranged at the center above the kettle body, and a plurality of nozzles are evenly arranged circumferentially at the bottom of the liquid collecting pipe.

[0006] Furthermore, the gas stirring device includes a nitrogen pipe connected to a gas collecting cylinder, which is installed at the bottom of the kettle body through a first flange and extends into the kettle body. A perforated plate is provided on the top of the gas collecting cylinder, and a capillary is installed on the perforated plate.

[0007] Furthermore, a thermometer is arranged inside the kettle body, and a pressure gauge is arranged on the top of the head.

[0008] The beneficial effects of the utility model are as follows: the reactor disclosed by the utility model comprises an inner cylinder and an outer cylinder, and a water jacket for hot water circulation is arranged between the two. This design can effectively control the temperature in the reactor, so that the hot water can circulate evenly through each layer of the water jacket, thereby ensuring the uniform temperature of the reaction materials; through the design of the vertical water channel, hot water can enter from the hot water inlet pipe and move to the upper water jacket after circulating in the bottom water jacket. This bottom-up hot water flow method helps to achieve rapid temperature balance; the gas stirring device at the center of the bottom enhances the mixing effect of the substances in the reactor through the design of the nitrogen pipe and the gas collecting cylinder, making the reaction more uniform and accelerating the reaction speed; through the liquid adding device arranged on the top of the reactor, the uniform addition of the reactants can be achieved, and the nozzle design helps to evenly distribute the reaction materials and reduce the problem of slow chemical reaction speed caused by excessive local concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0010] Figure 2 for Figure 1 Middle AA section view;

[0011] In the figure: 1-kettle body, 11-inner cylinder, 12-outer cylinder, 13-round steel, 14-water jacket, 15-hot water inlet pipe, 16-water outlet pipe, 17-vertical water channel, 18-water inlet, 21-nitrogen pipe, 22-first flange, 23-orifice plate, 24-gas collecting cylinder, 25-capillary tube, 3-discharging pipe, 4-liquid adding device, 41-nozzle, 42-liquid collecting pipe, 43-liquid adding pipe, 44-second flange, 5-end, 6-first connecting pipe, 7-second connecting pipe. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0013] The utility model provides Figure 1A reaction kettle for preparing palladium trifluoroacetate shown in the figure comprises a kettle body 1, the kettle body 1 comprises an inner cylinder 11 and an outer cylinder 12, a plurality of round steels 13 are arranged between the inner cylinder 11 and the outer cylinder 12, a water jacket 14 for hot water circulation is arranged between adjacent round steels 13, a hot water inlet pipe 15 and a water outlet pipe 16 are arranged at the upper part of the kettle body 1, the hot water inlet pipe 15 enters the kettle body 1 and is connected to a vertical waterway 17 extending downward, the outlet of the vertical waterway 17 is connected to the water jacket 14 at the bottom, and adjacent water outlets 16 are arranged at intervals on both sides of the vertical waterway 17. The water inlet 18 for the two-layer water jacket 14 to flow in or out, hot water enters from the hot water inlet pipe 15, flows through the vertical water channel 17 to the bottom water jacket 14, circulates once, and then enters the upper water jacket 14 through the water inlet 18, circulates in sequence, and finally flows out from the water outlet pipe 16; a head 5 is provided on the top of the kettle body 1, and a first connecting pipe 6 and a second connecting pipe 7 are provided on the head 5, and a liquid adding device 4 is provided on one side of the kettle body 1 below the head 5; a gas stirring device 4 is provided at the center of the bottom of the kettle body 1, and a discharge pipe 3 is provided on one side of the bottom of the kettle body 1.

[0014] The liquid adding device 4 comprises a liquid adding pipe 43 and a liquid collecting pipe 42 . The liquid adding pipe 43 is connected to the liquid collecting pipe 42 via a second flange 44 . The liquid collecting pipe 42 is arranged at the center of the kettle body 1 . A plurality of nozzles 41 are evenly arranged at the bottom of the liquid collecting pipe 42 .

[0015] The gas stirring device includes a nitrogen pipe 21, which is connected to a gas collecting cylinder 24. The gas collecting cylinder 24 is installed at the bottom of the kettle body 1 through a first flange 22. The gas collecting cylinder 24 extends into the kettle body 1. A perforated plate 23 is provided on the top of the gas collecting cylinder 24, and a capillary 25 is installed on the perforated plate 23.

[0016] A thermometer is arranged inside the kettle body 1, and a pressure gauge is arranged on the top of the head 5.

[0017] The utility model arranges an inner cylinder 11 and an outer cylinder 12 in a reactor body 1, and arranges a water jacket 14 for hot water circulation between the inner cylinder 11 and the outer cylinder 12. Hot water enters from a hot water inlet pipe 15, flows through a vertical water channel 17 to the bottom water jacket 14, circulates once, and then enters the upper water jacket 14 through a water port 18, circulates in sequence, and finally flows out from a water outlet pipe 16. The high-temperature water exchanges heat with the material in the reaction pool in the reactor body 1, quickly heats the material with a relatively low temperature to the temperature required for the reaction, so that the solution in the reaction pool heats up quickly and the temperature is uniform, which is conducive to the reaction. In addition, the utility model also arranges a gas stirring device in the reactor body, so that the materials in the reaction pool are mixed more uniformly, and the reaction speed is further accelerated. The reactor provided by the utility model can significantly improve the reaction conditions for preparing palladium trifluoroacetate, can make the reaction materials mixed uniformly, the temperature is uniform, the purity and activity of the product are improved, the reaction speed is accelerated, and the loss of palladium is reduced.

Claims

1. A reactor for preparing palladium trifluoroacetate, characterized in that: The kettle body (1) comprises an inner cylinder (11) and an outer cylinder (12), a plurality of round steels (13) are arranged between the inner cylinder (11) and the outer cylinder (12), a water jacket (14) for hot water circulation is arranged between adjacent round steels (13), a hot water inlet pipe (15) and a water outlet pipe (16) are arranged at the upper part of the kettle body (1), the hot water inlet pipe (15) is connected to a vertical water channel (17) extending downward after entering the kettle body (1), the outlet of the vertical water channel (17) is connected to the water jacket (14) at the bottom layer, and water pipes for the adjacent two layers of water jackets (14) to flow are arranged at intervals on both sides of the vertical water channel (17). The hot water enters or flows out of the water inlet (18) through the hot water inlet pipe (15), flows through the vertical water channel (17) to the bottom water jacket (14), circulates once, and then enters the upper water jacket (14) through the water inlet (18), circulates in sequence, and finally flows out from the water outlet pipe (16); a head (5) is provided at the top of the kettle body (1), a first connecting pipe (6) and a second connecting pipe (7) are provided on the head (5), and a liquid adding device (4) is provided on one side of the kettle body (1) below the head (5); a gas stirring device is provided at the center of the bottom of the kettle body (1), and a discharge pipe (3) is provided on one side of the bottom of the kettle body (1).

2. A reactor for preparing palladium trifluoroacetate according to claim 1, characterized in that: The liquid adding device (4) comprises a liquid adding pipe (43) and a liquid collecting pipe (42). The liquid adding pipe (43) is connected to the liquid collecting pipe (42) via a second flange (44). The liquid collecting pipe (42) is arranged at the center above the kettle body (1). A plurality of nozzles (41) are evenly arranged around the bottom of the liquid collecting pipe (42).

3. A reactor for preparing palladium trifluoroacetate according to claim 1, characterized in that: The gas stirring device comprises a nitrogen pipe (21), the nitrogen pipe (21) is connected to a gas collecting cylinder (24), the gas collecting cylinder (24) is installed at the bottom of the kettle body (1) through a first flange (22), the gas collecting cylinder (24) extends into the kettle body (1), a perforated plate (23) is arranged at the top of the gas collecting cylinder (24), and a capillary tube (25) is installed on the perforated plate (23).

4. A reactor for preparing palladium trifluoroacetate according to claim 1, characterized in that: A thermometer is arranged inside the kettle body (1), and a pressure gauge is arranged on the top of the head (5).

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