Rare earth oxide powder flow dividing wall type preheater

Abstract

The utility model discloses a rare earth oxide powder flow dividing wall type preheater, which relates to the technical field of preheaters, and comprises an upper chamber, a hopper is welded at the middle position of the top end of the upper chamber, a lower chamber is arranged below the upper chamber, a heating chamber is fixedly connected between the bottom end of the upper chamber and the top end of the lower chamber, and the top end of the lower chamber is provided with a baffle plate. And a heating assembly capable of uniformly heating is arranged in the heating chamber. According to the rare earth oxide powder flow dividing wall type preheater, the heating chamber, the steel plate sleeves, the insertion grooves, the ceramic heat conduction plates, the built-in electric heating wires and the electric heating wire wiring ports are arranged, gaps between the steel plate sleeves serve as powder circulation channels, and the built-in electric heating wires in the ceramic heat conduction plates are used for conducting heat, so that rare earth oxide powder is rapidly heated and preheated; the fluorination reaction time is shortened, and the conversion rate of the rare earth oxide is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to preheater technical field, concretely is a rare earth oxide powder flow wall type preheater. BACKGROUND

[0002] In recent years, with the traditional rare earth metallurgy field and new material, new technology field to rare earth fluoride growing demand and quality requirement, need on the basis of original rare earth fluoride preparation process to push out new. Hydrogen fluoride gas method as a kind of dry fluorination process, with product quality is high, process flow is short, it is easy to operate, direct yield is high, process process introduces less impurity etc., in preparation rare earth fluoride has potential advantages.

[0003] But rare earth oxide fluorination reaction temperature is higher, reaches 600 DEG C above, to fixed bed or fluidized bed fluorination reactor, improves the feeding temperature of rare earth oxide, shortens fluorination reaction time, improves the conversion rate of rare earth oxide, it is particularly important.

[0004] Now, a new type of rare earth oxide powder flow wall type preheater is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model discloses a rare earth oxide powder flow wall type preheater to solve the problem of rapid preheating of rare earth oxide in the background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a rare earth oxide powder flow wall type preheater, including the upper chamber, the middle position of the top end of the upper chamber is welded with the hopper, the lower chamber is arranged below the upper chamber, the bottom of the upper chamber and the top of the lower chamber are fixedly connected with the heating chamber, the bottom of the lower chamber is installed with the gas lock valve, the top of the upper chamber is equipped with radar type material level meter, the inside of the heating chamber is provided with the heating assembly that can be even heated.

[0007] The heating assembly includes a plurality of steel plate sleeves, a plurality of steel plate sleeves are transversely welded in the inside of the heating chamber, the middle position of the left side of the steel plate sleeve is provided with an insertion slot, the insertion slot is inserted with a ceramic heat conduction plate, the inside of the ceramic heat conduction plate is fixedly connected with built-in electric heating wire, and the bottom of the right side of the ceramic heat conduction plate is provided with an electric heating wire connection port.

[0008] Preferably, the steel plate sleeve is a rare earth oxide powder flow passage, and there is a spacing between each two steel plate sleeves.

[0009] Preferably, the shape and size of the outside of the ceramic heat conduction plate are adapted to the shape and size of the inside of the insertion slot, and the ceramic heat conduction plate can be displaced left and right along the inside of the insertion slot.

[0010] Preferably, the bottom of the lower chamber is welded with an internally threaded sensor mounting seat, the temperature sensor is inserted into the externally threaded sensor mounting seat, and the temperature sensor is provided with a sensor interface outside.

[0011] Preferably, the threads outside the temperature sensor and the threads inside the internally threaded sensor mounting seat are matched, and the left side of the temperature sensor penetrates the internally threaded sensor mounting seat and extends into the inside of the lower chamber.

[0012] Preferably, the bottom end of the radar type material level meter is higher than the top end of the upper chamber.

[0013] Compared with the prior art, the rare earth oxide powder flow partition wall type preheater not only realizes the function of rapidly preheating materials, but also realizes the functions of temperature monitoring and material quantity monitoring.

[0014] (1) By setting the heating chamber, the steel sleeve, the insertion slot, the ceramic heat conducting plate, the built-in electric heating wire and the electric heating wire connection port, when in use, the rare earth oxide powder flows into the upper chamber from the hopper, continuously descends along the flow-through channel between the steel sleeves in the heating chamber, and the built-in electric heating wire in the ceramic heat conducting plate conducts electricity and heats after being powered on, so that the flowing powder is rapidly heated and preheated.

[0015] (2) By setting the internally threaded sensor mounting seat, the temperature sensor and the sensor interface, when in use, the heated powder flows downward into the lower chamber, the gas locking valve is used for controlling the flow rate of the material and avoiding gas mixing, the wiring of the monitoring equipment is connected to the sensor interface at the tail of the temperature sensor, the temperature sensor on the internally threaded sensor mounting seat monitors the powder temperature in the lower chamber in real time, the temperature sensor is interlocked with the gas locking valve, the temperature signal monitored by the temperature sensor controls the rotating speed of the gas locking valve, and the flow rate of the rare earth oxide powder is controlled.

[0016] (3) By setting the radar type material level meter, when in use, the powder flows into the upper chamber from the hopper, and the radar type material level meter monitors the material level in the upper chamber. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a front view structural schematic diagram of the utility model;

[0018] Figure 2 It is a heating chamber side view structural schematic diagram of the utility model;

[0019] Figure 3 It is a Figure 1 It is a local section enlarged structural schematic diagram of the utility model;

[0020] Figure 4The utility model discloses a ceramic heat conduction plate front view partial cross section structure schematic diagram.

[0021] In the figure: 1, hopper; 2, radar type material level meter; 3, upper chamber; 4, heating chamber; 4-1, steel sleeve; 4-2, insertion groove; 4-3, ceramic heat conduction plate; 4-4, built-in heating wire; 4-5, heating wire wiring port; 5, lower chamber; 5-1, internal thread sensor mounting seat; 5-2, temperature sensor; 5-3, sensor interface; 6, gas lock valve. DETAILED DESCRIPTION

[0022] The technical solutions 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 fall within the scope of the utility model.

[0023] Embodiment: please refer to Figures 1-4 A rare earth oxide powder flow interwall preheater, including upper chamber 3, the middle position at the top of upper chamber 3 is welded with hopper 1, the lower portion of upper chamber 3 is provided with lower chamber 5, and the bottom of upper chamber 3 and the top of lower chamber 5 are fixedly connected with heating chamber 4, the bottom of lower chamber 5 is installed with gas lock valve 6, and the inside of heating chamber 4 is provided with heating assembly that can be uniformly heated;

[0024] Please refer to Figures 1-4 The rare earth oxide powder flow interwall preheater further includes a heating assembly, which includes a plurality of steel sleeves 4-1, the plurality of steel sleeves 4-1 are transversely welded in the inside of the heating chamber 4, the middle position of the left side of the steel sleeve 4-1 is provided with an insertion groove 4-2, the insertion groove 4-2 is inserted with a ceramic heat conduction plate 4-3, the inside of the ceramic heat conduction plate 4-3 is fixedly connected with a built-in heating wire 4-4, and the bottom of the right side of the ceramic heat conduction plate 4-3 is provided with a heating wire wiring port 4-5.

[0025] The steel sleeve 4-1 is a rare earth oxide powder flow passage, and there is a spacing between every two steel sleeves 4-1, the steel sleeves 4-1 are arranged at equal intervals, the shape and size of the outside of the ceramic heat conduction plate 4-3 are matched with the shape and size of the inside of the insertion groove 4-2, and the ceramic heat conduction plate 4-3 can be displaced left and right along the inside of the insertion groove 4-2, so that the material can be quickly heated.

[0026] Specifically, as Figure 1 , Figure 2 and Figure 4As shown, the rare earth oxide powder flows into the upper chamber 3 from the hopper 1, continuously downward along the flow channel between the steel sleeve 4-1 in the heating chamber 4, and the built-in heating wire 4-4 in the ceramic heat-conducting plate 4-3 generates heat after being electrified, so as to rapidly heat and preheat the flowing powder.

[0027] The bottom of the lower chamber 5 is welded with an internally-threaded sensor mounting seat 5-1, the temperature sensor 5-2 is inserted into the externally-threaded sensor mounting seat 5-1, the sensor interface 5-3 is arranged on the outer side of the temperature sensor 5-2, the thread outside the temperature sensor 5-2 matches the thread inside the internally-threaded sensor mounting seat 5-1, and the left side of the temperature sensor 5-2 penetrates through the internally-threaded sensor mounting seat 5-1 and extends into the inside of the lower chamber 5, so as to monitor the temperature of the material;

[0028] Specifically, as shown in Figure 1 and Figure 3 The wiring of the monitoring device is connected to the sensor interface 5-3 at the tail of the temperature sensor 5-2, the temperature sensor 5-2 on the internally-threaded sensor mounting seat 5-1 monitors the temperature of the powder in the lower chamber 5 in real time, the temperature sensor 5-2 is interlocked with the air lock valve 6, and the temperature signal monitored by the temperature sensor 5-2 controls the rotating speed of the air lock valve 6, so as to control the flow rate of the rare earth oxide powder.

[0029] The top of the upper chamber 3 is provided with a radar type material level meter 2, and the bottom end of the radar type material level meter 2 is higher than the top end of the upper chamber 3;

[0030] Specifically, as shown in Figure 1 The powder flows into the upper chamber from the hopper 1 and forms a pile in the upper chamber 3, and the radar type material level meter 2 monitors the material level in the upper chamber 3.

[0031] Working principle: in use, first, the rare earth oxide powder flows into the upper chamber 3 from the hopper 1, the powder flows into the upper chamber from the hopper 1 and forms a pile in the upper chamber 3, and the radar type material level meter 2 monitors the material level in the upper chamber 3. The powder continuously flows downward along the flow channel between the steel sleeve 4-1 in the heating chamber 4, and the built-in heating wire 4-4 in the ceramic heat-conducting plate 4-3 generates heat after being electrified, so as to rapidly heat and preheat the flowing powder. The heated powder flows downward into the lower chamber 5, the air lock valve 6 is used to control the flow rate of the material and avoid gas mixing, the wiring of the monitoring device is connected to the sensor interface 5-3 at the tail of the temperature sensor 5-2, the temperature sensor 5-2 on the internally-threaded sensor mounting seat 5-1 monitors the temperature of the powder in the lower chamber 5 in real time, the temperature sensor 5-2 is interlocked with the air lock valve 6, and the temperature signal monitored by the temperature sensor 5-2 controls the rotating speed of the air lock valve 6, so as to control the flow rate of the powder.

[0032] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and not limiting, the scope of the present application being defined by the appended claims rather than by the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A rare earth oxide powder flow partition wall preheater comprising an upper chamber (3), characterized in that: The upper chamber (3) top end of the intermediate position is welded with hopper (1), the lower chamber (3) is provided with lower chamber (5), the bottom of the upper chamber (3) and the top of lower chamber (5) are fixedly connected with heating chamber (4), the bottom of the lower chamber (5) is installed with gas lock valve (6), the top of the upper chamber (3) is provided with radar type level meter (2), the inside of the heating chamber (4) is provided with heating assembly that can be uniformly heated; The heating assembly includes a plurality of steel plate sleeves (4-1), a plurality of the steel plate sleeves (4-1) are transversely welded in the inside of the heating chamber (4), the left side of the steel plate sleeve (4-1) is provided with an insertion slot (4-2) at the intermediate position, the insertion slot (4-2) is inserted with a ceramic heat-conducting plate (4-3), the inside of the ceramic heat-conducting plate (4-3) is fixedly connected with an embedded heating wire (4-4), the bottom of the right side of the ceramic heat-conducting plate (4-3) is provided with a heating wire connection port (4-5).

2. A preheater for rare earth oxide powder flow according to claim 1, characterized in that: The steel plate sleeve (4-1) is a rare earth oxide powder flow passage, and there is a spacing between each two, and the steel plate sleeves (4-1) are arranged at equal intervals.

3. The rare earth oxide powder flow barrier preheater of claim 1, wherein: The shape and size of the outside of the ceramic heat-conducting plate (4-3) are adapted to the shape and size of the inside of the insertion slot (4-2), and the ceramic heat-conducting plate (4-3) can be displaced left and right along the inside of the insertion slot (4-2).

4. The rare earth oxide powder flow barrier preheater of claim 1, wherein: The bottom of the lower chamber (5) is welded with an internally threaded sensor mounting seat (5-1), the outside of the internally threaded sensor mounting seat (5-1) is inserted with a temperature sensor (5-2), and the outside of the temperature sensor (5-2) is provided with a sensor interface (5-3).

5. A preheater for rare earth oxide powder flow according to claim 4, characterized in that: The thread on the outside of the temperature sensor (5-2) is consistent with the thread in the internally threaded sensor mounting seat (5-1), and the left side of the temperature sensor (5-2) penetrates the internally threaded sensor mounting seat (5-1) and extends into the inside of the lower chamber (5).

6. A preheater for rare earth oxide powder flow according to claim 5, characterized in that: The bottom of the radar type level meter (2) is higher than the top of the upper chamber (3).

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