Efficient recovery device for chromium-molybdenum waste catalyst

Abstract

The utility model relates to the technical field of catalyst recovery, and discloses an efficient recovery device for a chromium-molybdenum waste catalyst, which comprises a reaction tank, a feed pipe fixedly mounted at the top of the reaction tank, a drain pipe fixedly mounted on the side surface of the bottom of the reaction tank, and a slag discharge pipe fixedly mounted on the inner wall of the bottom of the reaction tank, a driving motor is fixedly mounted on the outer wall of the bottom of the reaction tank. Waste water containing the chromium-molybdenum waste catalyst is continuously input into the feeding pipe, due to the Venturi effect, the piston plate slides towards one side of the feeding pipe in the feeding pipe till the fan-shaped thin groove is exposed, at the moment, due to the pressure difference between the feeding pipe and the interior of the feeding pipe, an external additive enters the feeding pipe and the spiral groove through the fan-shaped thin groove, and the chromium-molybdenum waste catalyst is discharged out of the spiral groove. According to the device, the additive is added and mixed with the waste chromium-molybdenum catalyst-containing wastewater to achieve a premixing effect, so that the continuously entering waste chromium-molybdenum catalyst-containing wastewater can be effectively mixed with the additive, and the recovery efficiency of the whole device on the waste chromium-molybdenum catalyst is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a catalyst recovery technical field, concretely is a kind of efficient recovery device of chromium molybdenum waste catalyst. BACKGROUND

[0002] Chromium molybdenum waste catalyst is dangerous waste produced in the field of petrochemical industry, oil refining and the like, contains molybdenum, chromium and nickel and other valuable metals, has resource recycling value while also having environmental pollution risk, molybdenum (melting point high, corrosion resistant) is strategic metal, is widely used in alloy, electronic device, chromium is used in stainless steel, electroplating. Molybdenum content in waste catalyst can reach 5%-15%, recycling can alleviate resource shortage.

[0003] In the prior art, the mainstream way for recycling chromium molybdenum waste catalyst adopts hydrometallurgy process, by adding pH adjuster into chromium molybdenum waste catalyst to adjust the whole solution into alkaline environment, so that chromium in chromium molybdenum waste catalyst can form chromium hydroxide to precipitate, and by adding ammonium sulfate into chromium molybdenum waste catalyst, molybdenum sulfide precipitate can be generated to precipitate.

[0004] However, the method of precipitating in the above actual operation process is generally to first inject chromium molybdenum waste catalyst into the container, then inject ammonium sulfate or pH adjuster, and then mix by using the stirring equipment in the container, the mixing efficiency is slow, and the ammonium sulfate or pH adjuster added later cannot quickly reach the bottom layer position of the solution, thereby affecting the efficiency of the precipitation reaction in the whole container. Therefore, we propose an efficient recovery device for chromium molybdenum waste catalyst. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an efficient recovery device for chromium molybdenum waste catalyst to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an efficient recovery device for chromium molybdenum waste catalyst, comprising a reaction tank, a feed pipe is fixedly installed at the top of the reaction tank, a drain pipe is fixedly installed at the bottom side of the reaction tank, a slag discharge pipe is fixedly installed on the inner wall of the bottom of the reaction tank, a drive motor is fixedly installed on the outer wall of the bottom of the reaction tank, a rotating rod is fixedly installed on the output end of the drive motor and penetrates the side wall of the reaction tank, a mesh plate is fixedly installed on the outer wall of the rotating rod, a feed mixing assembly is arranged in the feed pipe, the feed mixing assembly comprises a feeding pipe, the end of the feeding pipe is fixedly installed on the side wall of the feed pipe, a sleeve is fixedly installed on the end inner wall of the feeding pipe, a sliding rod is slidingly installed on the inner wall of the sleeve, a piston plate is fixedly installed on the end of the sliding rod, a fan-shaped slot is formed in the end inner surface of the feeding pipe close to the feed pipe, and a spiral groove is formed in the arc inner wall of the feed pipe.

[0007] Preferably, the end of the slide far away from the piston plate is fixedly connected with the spring between the inner wall of the sleeve, the inside of the feeding pipe is connected with the inside of the feeding pipe, and the inside wall of the end of the feeding pipe far away from the feeding pipe is provided with a spiral annular groove, the arc inner wall of the end of the feeding pipe far away from the feeding pipe is fixedly installed with a disc through a thin cylinder, and the end of the sleeve is fixedly installed on the side of the disc.

[0008] Preferably, the outer diameter of the piston plate is matched with the inner diameter of the feeding pipe, and the outer diameter of the sleeve is smaller than the inner diameter of the feeding pipe.

[0009] Preferably, the top end of the spiral groove is throughly connected with the end of the fan-shaped thin groove.

[0010] Preferably, the end of the feeding pipe close to the reaction tank is fixedly installed with a mounting frame on the inner wall, the inner wall of the mounting frame is rotatably installed with a rotating rod, the outer wall of the rotating rod is fixedly installed with an impeller close to the end of the reaction tank, and two spiral leaves are sequentially fixedly connected on the outer wall of the rotating rod from top to bottom.

[0011] Preferably, the spiral line direction of the spiral leaf is opposite to the spiral line direction of the spiral groove.

[0012] Preferably, the number of each group of notch grooves is provided with a plurality of groups, and the plurality of notch grooves are distributed in the outer side of the rotating rod in spiral line array.

[0013] Compared with the prior art, the beneficial effects of the utility model are that: through the cooperation of the feeding pipe, the sleeve, the slide, the spring, the piston plate, the fan-shaped thin groove and the spiral groove, the wastewater containing the chromium-molybdenum waste catalyst is continuously input in the feeding pipe, under the action of the atmospheric pressure, the piston plate slides to the side of the feeding pipe in the inside of the feeding pipe due to the Venturi effect, until the fan-shaped thin groove is exposed, at this time, due to the pressure difference in the feeding pipe and the feeding pipe, the additive outside enters the feeding pipe and the spiral groove through the fan-shaped thin groove, and is mixed with the wastewater containing the chromium-molybdenum waste catalyst, so that the effect of premixing is achieved, the continuously input chromium-molybdenum waste catalyst wastewater can be effectively mixed with the additive, and the recovery efficiency of the whole device on the chromium-molybdenum waste catalyst is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the overall structure schematic view of the utility model;

[0015] Figure 2 It is the sectional structure schematic view of the utility model;

[0016] Figure 3 It is the sectional structure schematic view of the feeding pipe of the utility model;

[0017] Figure 4The utility model discloses a feeding pipe and the cross section structure schematic diagram of feeding pipe,

[0018] Figure 5 The utility model discloses a sleeve cross section structure schematic diagram,

[0019] Figure 6 The utility model discloses a cross section structure schematic diagram of impeller and rotating rod and spiral blade.

[0020] In the drawing, the component list that each sign represents is as follows: 1, reaction tank;2, feeding pipe;3, drain pipe;4, slag discharge pipe;5, driving motor;6, rotating rod;7, mesh plate;8, feeding pipe;9, sleeve;10, sliding rod;11, spring;12, piston plate;13, fan-shaped fine slot;14, spiral groove;15, mounting frame;16, rotating rod;17, impeller;18, spiral blade;19, notched groove. Specific implementation

[0021] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0022] Please refer to Figures 1-6 , the high -efficient recovery device of a kind of chromium molybdenum waste catalyst in the drawing, including reaction tank 1, the top of reaction tank 1 is fixedly installed with feeding pipe 2, the bottom side of reaction tank 1 is fixedly installed with drain pipe 3, the bottom inner wall of reaction tank 1 is fixedly installed with slag discharge pipe 4, the bottom outer wall of reaction tank 1 is fixedly installed with driving motor 5, the output end of driving motor 5 is fixedly installed with rotating rod 6 through the side wall of reaction tank 1, the outer wall of rotating rod 6 is fixedly installed with mesh plate 7.

[0023] Please refer to Figure 1 、 Figure 2 , the height of drain pipe 3 in reaction tank 1 is higher than the bottom inner wall of reaction tank 1, after a period of precipitation reaction, open drain pipe 3, the remaining wastewater in reaction tank 1 is discharged outward, and drain pipe 3 and slag discharge pipe 4 are all controlled to open and close using electromagnetic valve, in addition, the number of mesh plate 7 is provided with multiple groups, multiple groups of mesh plate 7 are evenly distributed on the outer wall of rotating rod 6 in circumferential array, when driving motor 5 is started, rotating rod 6 is driven to rotate, in turn, mesh plate 7 is continuously rotated in the inside of reaction tank 1, to stir wastewater containing chromium molybdenum waste catalyst, improve the reaction efficiency of its and pH regulator or ammonium sulfate, in turn, improve the recovery reaction efficiency of the whole device.

[0024] The inside of the feeding pipe 2 is provided with a feeding mixing assembly, which comprises a feeding pipe 8, the end of the feeding pipe 8 is fixedly installed on the side wall of the feeding pipe 2, the end inner wall of the feeding pipe 8 is fixedly installed with a sleeve 9, the inner wall of the sleeve 9 is slidingly installed with a sliding rod 10, the end of the sliding rod 10 is fixedly installed with a piston plate 12, the end inner surface of the feeding pipe 8 close to the feeding pipe 2 is provided with a fan-shaped fine groove 13, the other end of the sliding rod 10 is fixedly connected with the spring 11 between the inner wall of the sleeve 9, and the arc-shaped inner wall of the feeding pipe 2 is provided with a spiral groove 14.

[0025] Please refer to Figure 3 、 Figure 4 、 Figure 5 The feeding pipe 8 is arranged in a horizontal manner, and the inside of the sleeve 9 is provided with a sliding hole matched with the outer diameter of the sliding rod 10, so that the sliding rod 10 can slide left and right in the inside of the sleeve 9, and the arc-shaped outer surface of the piston plate 12 is provided with a piston ring, so that the piston plate 12 can slide left and right in the inside of the feeding pipe 8, and the piston plate 12 in a static state can block and separate the inside cavity of the feeding pipe 8, and under the elastic force of the spring 11, the piston plate 12 is always located at the side far away from the end of the feeding pipe 2.

[0026] The feeding pipe 8 is connected with the inside of the feeding pipe 2 in a penetrating manner, and the inner wall of the end of the feeding pipe 8 far away from the feeding pipe 2 is provided with a spiral annular groove, and the arc-shaped inner wall of the end of the feeding pipe 8 far away from the feeding pipe 2 is fixedly installed with a disc through a thin cylinder, and the end of the sleeve 9 is fixedly installed on the side of the disc.

[0027] Please refer to Figure 3 、 Figure 4 The spiral annular groove is detachably connected with an external auxiliary medicament bottle, the auxiliary medicament bottle is filled with a pH value adjusting agent or ammonium sulfate, the pH value adjusting agent adopts an alkaline adjusting agent, so that when the feeding pipe 8 inputs the pH value adjusting agent, it reacts with chromium to generate a chromium hydroxide precipitate, and when the feeding pipe 8 inputs the ammonium sulfate, it reacts with molybdenum in the wastewater to generate a molybdenum sulfide precipitate, so as to facilitate the collection of chromium and molybdenum in the wastewater, and through the arrangement of the disc, the horizontal installation of the sleeve 9 is ensured without blocking the input of the material of the feeding pipe 8.

[0028] The outer diameter of the piston plate 12 is matched with the inner diameter of the feeding pipe 8, and the outer diameter of the sleeve 9 is smaller than the inner diameter of the feeding pipe 8.

[0029] Please refer to Figure 4, the piston plate 12 slides along the inside of the feeding pipe 8 to the side of the feeding pipe 2 under the suction effect of the influence of the waste water flow rate in the feeding pipe 2, further generating a pulling force on the sliding rod 10, further, the outer diameter of the sleeve 9 is smaller than the inner diameter of the feeding pipe 8, so that the material in the auxiliary medicament bottle installed outside can be sucked into the inside of the feeding pipe 8 and flow towards the side of the feeding pipe 2, until the piston plate 12 moves to the top of the fan-shaped fine slot 13, the material sucked into the feeding pipe 8 can enter the internal cavity of the feeding pipe 2 through the fan-shaped fine slot 13.

[0030] The top end of the spiral groove 14 is connected with the end of the fan-shaped fine slot 13.

[0031] Please refer to Figure 3 , when the fan-shaped fine slot 13 is connected with the spiral groove 14, part of the material entering the fan-shaped fine slot 13 and continuously moving towards the inside of the feeding pipe 2 is taken away by the flowing chromium-molybdenum waste catalyst-containing wastewater and flows downward, and part of the material continuously flows downward along the spiral groove 14, and the chromium-molybdenum waste catalyst-containing wastewater flowing downward in the feeding pipe 2 also enters the spiral groove 14 and mixes with the material therein, so as to improve the premixing effect between the chromium-molybdenum waste catalyst-containing wastewater and the catalytic precipitation reaction material, so that the wastewater continuously injected into the reaction tank 1 can be fully mixed with the material, improve the efficiency of the precipitation reaction, and accelerate the recovery of the chromium-molybdenum waste catalyst.

[0032] The mounting bracket 15 is fixedly installed on the inner wall of the end of the feeding pipe 2 close to the reaction tank 1, the rotating rod 16 is rotatably installed on the inner wall of the mounting bracket 15, the impeller 17 is fixedly installed on the outer wall of the rotating rod 16 close to the end of the reaction tank 1, and two spiral leaves 18 are sequentially fixedly connected on the outer wall of the rotating rod 16 from top to bottom, and a group of notched grooves 19 are formed in the side walls of the two spiral leaves 18.

[0033] Please refer to Figure 4 , Figure 6 , the mounting bracket 15 comprises a thin cylinder and a rotating ring fixedly connected with the thin cylinder, so as to ensure that the rotating rod 16 stably rotates at the center of the feeding pipe 2, and when the feeding pipe 2 continuously feeds, the impeller 17 rotates and drives the rotating rod 16 to rotate due to the flow of the chromium-molybdenum waste catalyst-containing wastewater, and the spiral leaves 18 are arranged at the center of the feeding pipe 2 in cooperation with the notched grooves 19, so as to produce a self-centering and two-side distribution effect on the chromium-molybdenum waste catalyst-containing wastewater, and promote the mixing of the chromium-molybdenum waste catalyst-containing wastewater with the material input into the feeding pipe 8.

[0034] The spiral line direction of the spiral leaf 18 is opposite to the spiral line direction of the spiral groove 14.

[0035] Please refer to Figure 4Due to the opposite helical directions of the helical blade 18 and the helical groove 14, when the feed pipe 2 is continuously fed, the wastewater is affected by the helical blade 18 to produce a diversion, and the diverted wastewater also produces a reverse impact on the mixed liquid flowing in the helical groove 14, so as to promote the reflux of part of the mixed liquid in the helical groove 14 to the feed pipe 2, and improve the mixing effect of the wastewater containing the chromium-molybdenum waste catalyst and the additives.

[0036] The number of each group of notch grooves 19 is provided to be multiple, and the multiple notch grooves 19 are arranged in a helical line array on the outside of the rotating rod 16.

[0037] Please refer to Figure 6 By providing multiple groups of notch grooves 19, the helical blade 18 in the feed pipe 2 cannot cause excessive obstruction to the wastewater containing the chromium-molybdenum waste catalyst, and can guide the effect while ensuring the normal feeding of the reaction tank 1.

[0038] Working principle: close the drain pipe 3 and the slag discharge pipe 4, install the required additive containing container to the end of the feeding pipe 8, and ensure the sealing between the feeding pipe 8 and the container, then connect the top end of the feed pipe 2 with the pipeline of the wastewater input pump, start the driving motor 5, cooperate with the rotating rod 6, drive the mesh plate 7 to continuously rotate in the inside of the reaction tank 1, then start the wastewater input pump, input the wastewater containing the chromium-molybdenum waste catalyst from the feed pipe 2 into the reaction tank 1, due to the fast flow rate of the wastewater in the feed pipe 2, due to the Venturi effect, the pressure in the feed pipe 2 is low at this time, the piston plate 12 slides to the side of the feed pipe 2 in the inside of the feeding pipe 8, until the fan-shaped fine groove 13 is exposed, at this time, due to the pressure difference between the feeding pipe 8 and the feed pipe 2, the external additives enter the feed pipe 2 and the helical groove 14 through the fan-shaped fine groove 13, and are mixed with the wastewater containing the chromium-molybdenum waste catalyst, to achieve the effect of pre-mixing, so that the continuously entering chromium-molybdenum waste catalyst wastewater can be effectively mixed with the additives, and the recovery efficiency of the entire device for the chromium-molybdenum waste catalyst is improved.

[0039] It should also be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus that includes a list of elements does not only include those elements, but also includes other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0040] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency recovery device for chromium-molybdenum waste catalyst, comprising a reaction tank (1), characterized in that: The top of the reaction tank (1) is fixedly installed with a feeding pipe (2), the bottom side of the reaction tank (1) is fixedly installed with a drainage pipe (3), the bottom inner wall of the reaction tank (1) is fixedly installed with a slag discharge pipe (4), the bottom outer wall of the reaction tank (1) is fixedly installed with a driving motor (5), the output end of the driving motor (5) penetrates through the side wall of the reaction tank (1) and is fixedly installed with a rotating rod (6), the outer wall of the rotating rod (6) is fixedly installed with a mesh plate (7), the inside of the feeding pipe (2) is provided with a feeding mixing assembly, the feeding mixing assembly comprises a feeding pipe (8), the end of the feeding pipe (8) is fixedly installed on the side wall of the feeding pipe (2), the end inner wall of the feeding pipe (8) is fixedly installed with a sleeve (9), the inner wall of the sleeve (9) is slidingly installed with a sliding rod (10), the end of the sliding rod (10) is fixedly installed with a piston plate (12), the end inner surface of the feeding pipe (8) close to the feeding pipe (2) is provided with a fan-shaped slot (13), and the arc-shaped inner wall of the feeding pipe (2) is provided with a spiral groove (14).

2. The efficient recovery device of the chromium-molybdenum waste catalyst according to claim 1, characterized in that: The end of the sliding rod (10) away from the piston plate (12) is fixedly connected with the spring (11) between the inner wall of the sleeve (9), the inside of the feeding pipe (8) and the feeding pipe (2) is throughly connected, the end inner wall of the feeding pipe (8) away from the feeding pipe (2) is provided with a spiral annular groove, the arc-shaped inner wall of the end of the feeding pipe (8) away from the feeding pipe (2) is fixedly installed with a disc through a thin cylinder, and the end of the sleeve (9) is fixedly installed on the side of the disc.

3. The efficient recovery device of the chromium-molybdenum waste catalyst according to claim 1, characterized in that: The outer diameter of the piston plate (12) is matched with the inner diameter of the feeding pipe (8), and the outer diameter of the sleeve (9) is smaller than the inner diameter of the feeding pipe (8).

4. The efficient recovery device of a chromium-molybdenum waste catalyst according to claim 1, characterized in that: The top end of the spiral groove (14) is throughly connected with the end of the fan-shaped slot (13).

5. The efficient recovery device of a chromium-molybdenum waste catalyst according to claim 1, characterized in that: The inner wall of the end of the feeding pipe (2) close to the reaction tank (1) is fixedly installed with a mounting bracket (15), the inner wall of the mounting bracket (15) is rotatably installed with a rotating rod (16), the outer wall of the rotating rod (16) is fixedly installed with an impeller (17) close to the end outer wall of the reaction tank (1), two spiral leaves (18) are sequentially fixedly connected on the outer wall of the rotating rod (16) from top to bottom, and a group of notch grooves (19) are formed in the side walls of the two spiral leaves (18).

6. The efficient recovery device of a chromium-molybdenum waste catalyst according to claim 5, characterized in that: The spiral line direction of the spiral leaf (18) is opposite to the spiral line direction of the spiral groove (14).

7. The efficient recovery device of a chromium-molybdenum waste catalyst according to claim 5, characterized in that: A plurality of the notch grooves (19) are arranged in a spiral line array on the outer side of the rotating rod (16).

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