Liquid level and temperature control system of anhydrous magnesium chloride particle melting and purifying furnace

Abstract

A liquid level and temperature control system for an anhydrous magnesium chloride particle melting and purifying furnace comprises a furnace charge blending system, a furnace charge loading system and a temperature control system, the furnace burden blending system comprises an anhydrous magnesium chloride stock bin, an anhydrous magnesium chloride rotary feeder, an anhydrous magnesium chloride continuous impact type weighing device, a carbon powder stock bin, a carbon powder rotary feeder and a carbon powder continuous impact type weighing device; the furnace charge loading system comprises an anhydrous magnesium chloride screw feeder, a carbon powder screw feeder, a mixture screw feeder and a chute; the temperature control system comprises a melting chamber temperature transmitter, a melting chamber transformer, a chlorination chamber temperature transmitter, a chlorination chamber transformer and a clarifying chamber liquid level transmitter. The device has the beneficial effects that the purity and the physical performance stability of magnesium and magnesium chloride are ensured by dynamically adjusting temperature parameters in real time, and the process fluctuation caused by a coupling effect is reduced through the cooperative control of the temperature and the liquid level, so that the molten state is more uniform, and the defect rate of products is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automatic control of chemical equipment, in particular to a kind of anhydrous magnesium chloride particle melting purification furnace liquid level and temperature control system. BACKGROUND

[0002] In the industrial production process such as magnesium production, anhydrous magnesium chloride preparation, melting purification device is the most critical equipment. The temperature and liquid level control of melting purification device directly affect product quality, production efficiency and device safety.

[0003] At present, the temperature control of traditional melting furnace mostly adopts artificial control mode, and once the parameters are set, it is difficult to adjust in real time with the change of working condition. When the composition of materials in the furnace changes, the ambient temperature fluctuates or the equipment ages, the temperature control precision will decrease significantly, leading to insufficient or overheating of material melting, affecting product quality, and even causing equipment failure.

[0004] In terms of liquid level control, the existing control system mostly uses independent liquid level sensor and control mechanism, without considering the coupling relationship between temperature and liquid level. For example, the change of liquid level will affect the heat transfer efficiency, and then affect the temperature distribution; while the fluctuation of temperature will change the density and fluidity of materials, indirectly affecting the liquid level height. This independent control mode cannot realize the collaborative optimization of temperature and liquid level, and is difficult to meet the requirements of modern industrial production for high precision and high efficiency.

[0005] In addition, the traditional control system lacks fault diagnosis and early warning function, when the temperature sensor, liquid level sensor or actuator fails, it cannot be found in time and effective measures cannot be taken, which may lead to production interruption and economic loss. INVENTION CONTENTS

[0006] In view of the deficiencies of the prior art, the utility model provides an anhydrous magnesium chloride particle melting purification furnace liquid level and temperature control system to solve the problem of automatic control of melting purification furnace liquid level and temperature.

[0007] An anhydrous magnesium chloride particle melting purification furnace liquid level and temperature control system, characterized by comprising a furnace charge blending system, a furnace charge loading system and a temperature control system,

[0008] The furnace charge blending system comprises an anhydrous magnesium chloride bin, an anhydrous magnesium chloride rotary feeder, an anhydrous magnesium chloride continuous impact type weigher, a carbon powder bin, a carbon powder rotary feeder and a carbon powder continuous impact type weigher, the anhydrous magnesium chloride bin, the anhydrous magnesium chloride rotary feeder and the anhydrous magnesium chloride continuous impact type weigher are connected in sequence, and the carbon powder bin, the carbon powder rotary feeder and the carbon powder continuous impact type weigher are connected in sequence.

[0009] The furnace charging system comprises a non-water magnesium chloride screw feeder, a carbon powder screw feeder, a mixed material screw feeder and a chute, the non-water magnesium chloride continuous impact type weigher is connected to the non-water magnesium chloride screw feeder, the carbon powder continuous impact type weigher is connected to the carbon powder screw feeder, the non-water magnesium chloride screw feeder and the carbon powder screw feeder are connected to the mixed material screw feeder, and the lower end of the mixed material screw feeder is connected to the melting and purifying furnace through the chute.

[0010] The melting and purifying furnace comprises a melting chamber, a chlorination chamber and a clarification chamber, and the chlorination chamber is between the melting chamber and the clarification chamber.

[0011] The temperature control system comprises a melting chamber temperature transmitter, a melting chamber transformer, a chlorination chamber temperature transmitter, a chlorination chamber transformer and a clarification chamber liquid level transmitter.

[0012] The melting chamber temperature transmitter and the clarification chamber liquid level transmitter are connected to the non-water magnesium chloride continuous impact type weigher and the carbon powder continuous impact type weigher respectively to form interlocking, and the non-water magnesium chloride continuous impact type weigher is connected to the non-water magnesium chloride rotary feeder and the non-water magnesium chloride screw feeder respectively to form interlocking, and the carbon powder continuous impact type weigher is connected to the carbon powder rotary feeder and the carbon powder screw feeder respectively to form interlocking.

[0013] The non-water magnesium chloride rotary feeder and the carbon powder rotary feeder control the feeding amount through a frequency converter, so that the automatic adjustment of the feeding amount can be realized, and when the liquid level of the clarification chamber is too high, the non-water magnesium chloride rotary feeder and the carbon powder rotary feeder can be interlocked to be closed.

[0014] The melting chamber temperature transmitter and the chlorination chamber temperature transmitter monitor the melt temperature in real time, the melting chamber temperature transmitter forms a regulating loop with the gear of the melting chamber transformer, the melting chamber transformer realizes the automatic control of the melting chamber temperature through gear adjustment, the chlorination chamber temperature transmitter forms a regulating loop with the gear of the chlorination chamber transformer, and the chlorination chamber transformer realizes the automatic control of the chlorination chamber temperature through gear adjustment, so that the melt temperature can be ensured to be kept within the process control range.

[0015] The melting chamber temperature is displayed through the melting chamber temperature transmitter, the chlorination chamber temperature is displayed through the chlorination chamber temperature transmitter, and the clarification chamber liquid level is displayed through the clarification chamber liquid level transmitter.

[0016] The anhydrous magnesium chloride particles from the anhydrous magnesium chloride bin pass through the anhydrous magnesium chloride rotary feeder, enter the anhydrous magnesium chloride continuous impact type weigher, are weighed and transmitted to the anhydrous magnesium chloride screw feeder; the carbon powder particles from the carbon powder bin pass through the carbon powder rotary feeder, enter the carbon powder continuous impact type weigher, are weighed and transmitted to the carbon powder screw feeder, the rotation speeds of the anhydrous magnesium chloride rotary feeder and the carbon powder rotary feeder can be controlled through the frequency converter, the automatic adjustment of the discharging amount can be realized, the anhydrous magnesium chloride particles and the carbon powder are sent into the screw conveyor according to the proportion, and then pass through the chute into the melting purification furnace melting chamber.

[0017] The temperature in the melting purification furnace is controlled at 780-800 DEG C.

[0018] The beneficial effects of the utility model lie in:

[0019] 1. improving product quality and consistency: by real-time dynamic adjustment of temperature parameters, adapting to material composition changes, environmental fluctuations and other working conditions, avoiding insufficient melting or overheating, ensuring the purity and physical properties of magnesium and magnesium chloride stable, and the coordinated control of temperature and liquid level reduces the process fluctuations caused by coupling effect, makes the molten state more uniform, and reduces the product defect rate.

[0020] 2. improving production efficiency and energy consumption optimization: the intelligent system automatically optimizes the heating power and feeding rate through multi-parameter coupling analysis, shortens the melting period, improves the production capacity, avoids the hysteresis of traditional manual control, reduces energy waste and reduces unit production cost. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The specific process diagram of the utility model;

[0022] In the drawing: 1, anhydrous magnesium chloride bin, 2, anhydrous magnesium chloride rotary feeder, 3, anhydrous magnesium chloride continuous impact type weigher, 4, anhydrous magnesium chloride screw feeder, 5, mixed material screw feeder, 6, carbon powder bin, 7, carbon powder rotary feeder, 8, carbon powder continuous impact type weigher, 9, carbon powder screw feeder, 10, chute, 11, melting chamber temperature transmitter, 12, melting chamber transformer, 13, chlorination chamber temperature transmitter, 14, chlorination chamber transformer, 15, clarification chamber liquid level transmitter, 16, melting purification furnace. DETAILED DESCRIPTION

[0023] The technical scheme of the utility model will be described below in conjunction with the embodiments, obviously, the described embodiments are only a part of the embodiments of the utility model, rather than 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 scope of protection of the utility model.

[0024] Embodiment 1

[0025] As Figure 1 shown, the utility model provides a kind of anhydrous magnesium chloride particle melting purification furnace liquid level and temperature control system, including furnace burden deployment system, furnace burden loading system and temperature control system,

[0026] Furnace burden deployment system includes anhydrous magnesium chloride bunker 1, anhydrous magnesium chloride rotary feeder 2, anhydrous magnesium chloride continuous impact type weigher 3, carbon powder bunker 6, carbon powder rotary feeder 7 and carbon powder continuous impact type weigher 8, anhydrous magnesium chloride bunker 1, anhydrous magnesium chloride rotary feeder 2 and anhydrous magnesium chloride continuous impact type weigher 3 are connected in turn, carbon powder bunker 6, carbon powder rotary feeder 7 and carbon powder continuous impact type weigher 8 are connected in turn;

[0027] Furnace burden loading system includes anhydrous magnesium chloride screw feeder 4, carbon powder screw feeder 9, mixed material screw feeder 5 and chute 10, anhydrous magnesium chloride continuous impact type weigher 3 is connected to anhydrous magnesium chloride screw feeder 4, carbon powder continuous impact type weigher 8 is connected to carbon powder screw feeder 9, anhydrous magnesium chloride screw feeder 4 and carbon powder screw feeder 9 are connected to mixed material screw feeder 5, and the lower end of mixed material screw feeder 5 is connected to melting purification furnace 16 through chute 10;

[0028] Melting purification furnace 16 includes melting chamber, chlorination chamber and clarification chamber, and the chlorination chamber is between the melting chamber and the clarification chamber.

[0029] Temperature control system includes melting chamber temperature transmitter 11, melting chamber transformer 12, chlorination chamber temperature transmitter 13, chlorination chamber transformer 14 and clarification chamber liquid level transmitter 15.

[0030] The temperature in the melting purification furnace 16 is controlled at 780-800℃.

[0031] Specifically, anhydrous magnesium chloride particles pass through anhydrous magnesium chloride rotary feeder 2 from anhydrous magnesium chloride bunker 1, enter anhydrous magnesium chloride continuous impact type weigher 3, are weighed and transmitted to anhydrous magnesium chloride screw feeder 4;Carbon powder particles pass through carbon powder rotary feeder 7 from carbon powder bunker 6, enter carbon powder continuous impact type weigher 8, are weighed and transmitted to carbon powder screw feeder 9, and the rotational speed of anhydrous magnesium chloride rotary feeder 2 and carbon powder rotary feeder 7 can be controlled by frequency converter, so as to realize automatic adjustment of the discharging amount, and anhydrous magnesium chloride particles and carbon powder are sent into screw conveyor in proportion, and then enter the melting chamber of melting purification furnace 16 through chute 10;

[0032] The melting chamber temperature transmitter 11 and the clarification chamber liquid level transmitter 15 are connected with the anhydrous magnesium chloride continuous impact type weigher 3 and the carbon powder continuous impact type weigher 8 respectively to form interlocking, the anhydrous magnesium chloride continuous impact type weigher 3 is connected with the anhydrous magnesium chloride rotary feeder 2 and the anhydrous magnesium chloride screw feeder 4 respectively to form interlocking; the carbon powder continuous impact type weigher 8 is connected with the carbon powder rotary feeder 7 and the carbon powder screw feeder 9 respectively to form interlocking;

[0033] The anhydrous magnesium chloride rotary feeder 2 and the carbon powder rotary feeder 7 control the feeding amount through the frequency converter, and the automatic adjustment of the discharging amount can be realized; when the clarification chamber liquid level is too high, the anhydrous magnesium chloride rotary feeder 2 and the carbon powder rotary feeder 7 can be interlocked to be closed.

[0034] The melting chamber temperature transmitter 11 and the chlorination chamber temperature transmitter 13 monitor the melt temperature in real time, the melting chamber temperature transmitter 11 forms a regulating loop with the gear position of the melting chamber transformer 12, the melting chamber transformer 12 realizes the automatic control of the melting chamber temperature through the gear position adjustment; the chlorination chamber temperature transmitter 13 forms a regulating loop with the gear position of the chlorination chamber transformer 14, the chlorination chamber transformer 14 realizes the automatic control of the chlorination chamber temperature through the gear position adjustment, so as to ensure that the melt temperature is kept within the process control range.

[0035] The melting chamber temperature is displayed through the melting chamber temperature transmitter 11, the chlorination chamber temperature is displayed through the chlorination chamber temperature transmitter 13, and the clarification chamber liquid level is displayed through the clarification chamber liquid level transmitter 15.

Claims

1. Anhydrous magnesium chloride granules melting purification furnace liquid level and temperature control system, characterized in that: The furnace charge preparation system, the furnace charge loading system and the temperature control system, The furnace charge preparation system comprises a magnesium chloride anhydrous bin, a magnesium chloride anhydrous rotary feeder, a magnesium chloride anhydrous continuous impact type weighing device, a carbon powder bin, a carbon powder rotary feeder and a carbon powder continuous impact type weighing device, which are connected in sequence. The furnace charge loading system comprises a magnesium chloride anhydrous screw feeder, a carbon powder screw feeder, a mixed material screw feeder and a chute, the magnesium chloride anhydrous continuous impact type weighing device is connected to the magnesium chloride anhydrous screw feeder, the carbon powder continuous impact type weighing device is connected to the carbon powder screw feeder, the magnesium chloride anhydrous screw feeder and the carbon powder screw feeder are connected to the mixed material screw feeder, and the lower end of the mixed material screw feeder is connected to the melting and purifying furnace through the chute. The temperature control system comprises a melting chamber temperature transmitter, a melting chamber transformer, a chlorination chamber temperature transmitter, a chlorination chamber transformer and a clarification chamber liquid level transmitter.

2. The water-free magnesium chloride granules melting purifying furnace liquid level and temperature control system according to claim 1, characterized in that: The melting chamber temperature transmitter and the clarification chamber liquid level transmitter are connected to the magnesium chloride anhydrous continuous impact type weighing device and the carbon powder continuous impact type weighing device respectively to form interlocking, the magnesium chloride anhydrous continuous impact type weighing device is connected to the magnesium chloride anhydrous rotary feeder and the magnesium chloride anhydrous screw feeder respectively to form interlocking, and the carbon powder continuous impact type weighing device is connected to the carbon powder rotary feeder and the carbon powder screw feeder respectively to form interlocking.

3. Anhydrous magnesium chloride granules melting purifying furnace liquid level and temperature control system according to claim 2, characterized in that: The melting chamber temperature transmitter and the melting chamber transformer form an adjusting circuit, the melting chamber transformer realizes automatic control of the temperature of the melting chamber through gear adjustment, the chlorination chamber temperature transmitter and the chlorination chamber transformer form an adjusting circuit, and the chlorination chamber transformer realizes automatic control of the temperature of the chlorination chamber through gear adjustment.

4. The water-free magnesium chloride granules melting purifier liquid level and temperature control system according to claim 1, characterized in that: The temperature in the melting and purifying furnace is controlled at 780-800℃.

5. The water-free magnesium chloride granules melting purifying furnace liquid level and temperature control system according to claim 3, characterized in that: The temperature of the melting chamber is displayed by the melting chamber temperature transmitter, the temperature of the chlorination chamber is displayed by the chlorination chamber temperature transmitter, and the liquid level of the clarification chamber is displayed by the clarification chamber liquid level transmitter.

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