CN114531745A - Fluoride purification system, explosion-proof heater in fluoride purification system and use method - Google Patents

Abstract

The invention provides an explosion-proof heater in a fluoride purification system, which comprises a heating container and a heat-insulating sleeve; the outer side of the heating container is sleeved with a heat-insulating sleeve; the heating container comprises an upper section, a middle section and a lower section which are arranged along the length direction of the heating container; heating detection components are arranged at the positions, close to the middle, of the upper section, the middle section and the lower section; the heating detection assembly comprises a heating pipe and an explosion-proof sensor which are matched with each other; the invention also provides a use method of the fluoride purification system; the heater is detachable, so that later-period disassembly and maintenance are facilitated, the adsorbent is filled in the inner container, and fluoride gas also circulates in the inner container and is not in contact with the heater. The isolation of poisonous and harmful gas is guaranteed, the possibility of leakage is reduced, the temperature of the heating container is controlled by the upper, middle and lower sections independently, the temperature accuracy is guaranteed, the AB group explosion-proof heater group is used in an exchange mode, and the working efficiency is improved.

Description

A kind of fluoride purification system, explosion-proof heater in fluoride purification system and using method

technical field

The invention relates to a fluoride purification device, in particular to a fluoride purification system, an explosion-proof heater in the fluoride purification system and a use method.

Background technique

Electric heater is an internationally popular electric heating equipment, which is used for heating, heat preservation and heating of flowing liquid and gaseous media. The huge heat generated in the operation of the electric heating element makes the temperature of the heated medium meet the user's technological requirements.

In the existing fluoride purification system, there is no adsorbent to adsorb and purify impurities in the fluoride gas. In this step, the produced fluoride contains trace impurities.

Therefore, there is a need for improvements to the prior art.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide an efficient fluoride purification system, an explosion-proof heater in the fluoride purification system and a method of use.

In order to solve the above technical problems, the present invention provides an explosion-proof heater in a fluoride purification system, including a heating container and a thermal insulation sleeve;

The outer side of the heating container is provided with a thermal insulation sleeve;

The heating container includes an upper section, a middle section and a lower section arranged along its length direction; the upper section, the middle section and the lower section are all provided with heating detection components near the middle;

The heating detection component includes a heating tube and an explosion-proof sensor used in conjunction;

The heating pipe is located in the thermal insulation sleeve, the heating pipe is spirally arranged at a position close to the surrounding of the heating container, and an explosion-proof junction box is also arranged on the heating pipe;

The explosion-proof sensor is fixedly arranged on the thermal insulation casing through the sensor mounting bracket;

The sensor mounting bracket is a truncated cone-shaped frame, the bottom of the sensor mounting bracket is fixedly connected with the thermal insulation sleeve as a whole, the top of the sensor mounting bracket is provided with a rotating sleeve, and the inner surface of the rotating sleeve is provided with an internal thread;

A rotating shaft is installed on the explosion-proof sensor, and the outer surface of the rotating shaft is provided with an external thread;

The rotating sleeve is adapted to the rotating shaft, the rotating shaft is threadedly connected with the rotating sleeve, and the detection probe of the explosion-proof sensor is in contact with the outer wall of the heating container after passing through the temperature measuring hole on the thermal insulation sleeve;

The explosion-proof sensor is signal-connected to the explosion-proof junction box through a signal tube.

As the improvement to the explosion-proof heater in a kind of fluoride purification system of the present invention:

The upper, middle and lower sections of the heating vessel are detachably connected.

As the improvement to the explosion-proof heater in a kind of fluoride purification system of the present invention:

The invention also provides a fluoride purification system, comprising two explosion-proof heater groups AB, and each group of explosion-proof heater groups includes several explosion-proof heaters connected in series in sequence;

The nitrogen channels are respectively connected with the inlets of the AB groups of explosion-proof heater groups;

The fluoride gas channels are respectively connected with the inlets of the AB groups of explosion-proof heater groups;

The outlets of the AB groups of explosion-proof heater groups are respectively connected with subsequent treatment equipment and exhaust gas treatment equipment.

The present invention also provides a method for using the fluoride purification system, comprising the following steps:

1) The explosion-proof heater group of group A usually passes fluoride gas at a temperature, and the internal adsorbent absorbs impurities; at the same time, the explosion-proof heater group of group B is connected to nitrogen, and the PLC program controls the heating temperature of the explosion-proof heater in the explosion-proof heater group, and the timing is segmented. Heating to desorb the impurities on the adsorbent, and the nitrogen gas takes away the impurities into the tail gas treatment equipment; until the end of a working process, step 2 is performed;

2) Group B explosion-proof heaters usually pass fluoride gas at a temperature, and the internal adsorbent absorbs impurities; at the same time, group A explosion-proof heaters pass nitrogen, and the PLC program controls the heating temperature of the explosion-proof heaters in the explosion-proof heaters, segmented timing Heating to desorb the impurities on the adsorbent, and the nitrogen gas takes away the impurities into the tail gas treatment equipment; until the end of a working process, step 3 is performed;

3), repeat steps 1-2, the explosion-proof heater group of group AB is used interchangeably.

The technical advantages of the fluoride purification system, the explosion-proof heater in the fluoride purification system and the use method of the present invention are:

1. The heater is made detachable, which is convenient for later disassembly and maintenance.

2. The adsorbent is filled in the inner container, and the fluoride gas is also circulated in the inner container, and there is no contact with the heater. Ensure the isolation of toxic and harmful gases and reduce the possibility of leakage.

3. The heating container adopts the upper, middle and lower three sections of separate temperature control to ensure the temperature accuracy.

4. AB group explosion-proof heater group is used interchangeably to increase work efficiency.

Description of drawings

The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

Fig. 1 is the structural representation of the explosion-proof heater in a kind of fluoride purification system of the present invention;

FIG. 2 is a schematic structural diagram of the explosion-proof sensor 3 used in conjunction with the heating container 1 in FIG. 1;

Figure 3 is a schematic structural diagram of a fluoride purification system.

Detailed ways

The present invention will be further described below with reference to specific embodiments, but the protection scope of the present invention is not limited thereto.

Embodiment 1. An explosion-proof heater in a fluoride purification system, as shown in FIG. 1 , includes a heating vessel 1 and a thermal insulation sleeve 2 .

The outer surface of the heating container 1 is covered with a thermal insulation sleeve 2 .

The heating container 1 is provided with several heating detection components along its length direction; the two ends of the heating container 1 are respectively provided with an air inlet 14 and an air outlet 15 .

In this embodiment, the heating container 1 is divided into three sections, including an upper section 11, a middle section 12, and a lower section 13, in order from top to bottom, and a heating detection component is provided near the middle of each section, which can be divided into three sections. It is convenient to control the heating container 1 in sections and separately, so as to ensure the temperature accuracy.

The heating detection component includes a heating tube 4 and an explosion-proof sensor 3 that are used together;

The heating pipe 4 is located in the thermal insulation sleeve 2, and the heating pipe 4 is spirally arranged at a position close to the surrounding of the heating container 1. The heating container 1 is heated and heated by controlling the heating pipe 4. The heating pipe 4 is also provided with an explosion-proof junction box 41.

The explosion-proof sensor 3 is fixedly arranged on the thermal insulation sleeve 2 through the sensor mounting bracket 31;

The sensor mounting bracket 31 is a truncated cone-shaped frame, the bottom of the sensor mounting bracket 31 is fixedly connected with the thermal insulation sleeve 2 as a whole, the top of the sensor mounting bracket 31 is provided with a rotating sleeve 32, and the inner surface of the rotating sleeve 32 is provided with internal threads;

A rotating shaft 33 is installed on the explosion-proof sensor 3, and the outer surface of the rotating shaft 33 is provided with an external thread;

The rotating sleeve 32 is adapted to the rotating shaft 33, the rotating shaft 33 is threadedly connected with the rotating sleeve 32, and the detection probe 34 of the explosion-proof sensor 3 passes through the temperature measuring hole 21 on the thermal insulation sleeve 2 and abuts against the outer wall of the heating container 1;

By rotating the explosion-proof sensor 3 , the rotating shaft 33 and the rotating sleeve 32 can be rotated to adjust the length of the detection probe 34 in the temperature measuring hole 21 , so as to adjust whether the detection probe 34 is in contact with the outer wall of the heating container 1 .

The explosion-proof sensor 3 is signally connected to the explosion-proof junction box 41 through a signal tube. The explosion-proof sensor 3 detects the temperature in the heating container 1 and then transmits it to the explosion-proof junction box 41. The temperature is determined by temperature control, and the heating container 1 is heated by controlling the heating power of the heating tube 4 .

When in use, the temperature of the upper section 11, the middle section 12 and the lower section 13 is controlled to be the same by the heating tube 4, and the temperature of the three sections is controlled independently to ensure temperature accuracy.

The upper section 11, the middle section 12 and the lower section 13 of the heating container 1 are detachably connected. When replacement and maintenance are required, the upper section 11, the middle section 12 and the lower section 13 can be taken out from the inner cavity of the thermal insulation sleeve 2 in turn, and the corresponding parts can be replaced and maintained. , and then reassemble it back.

The upper section 11, the middle section 12 and the lower section 13 of the heating vessel 1 are filled with a fluoride adsorbent. The fluoride adsorbent can absorb most of the toxic and harmful gases in the fluoride gas, and the fluoride gas has no contact with the heating pipe 4, which can ensure that the toxic Harmful gases are isolated to reduce the possibility of leakage.

A fluoride purification system, comprising two groups of AB explosion-proof heaters, and each group of explosion-proof heaters includes several explosion-proof heaters connected in series in sequence (in this embodiment, the number of explosion-proof heaters is 3);

The nitrogen channels are respectively connected with the inlets of the AB groups of explosion-proof heater groups;

The fluoride gas channels are respectively connected with the inlets of the AB groups of explosion-proof heater groups;

The outlets of the AB groups of explosion-proof heater groups are respectively connected with the subsequent treatment equipment and the exhaust gas treatment equipment.

Valves are provided on both the nitrogen gas channel and the fluoride gas channel.

A use flow of a fluoride purification system, comprising the following steps:

1) During normal use, the explosion-proof heater group of group A is usually warmed to fluoride gas, and the internal adsorbent adsorbs impurities; at the same time, the explosion-proof heater group of group B is connected to nitrogen, and the PLC program controls the heating temperature of the explosion-proof heater in the explosion-proof heater group. , heating in stages and regularly to desorb the impurities on the adsorbent, and the nitrogen gas takes away the impurities into the tail gas treatment equipment; until the end of a working process, step 2 is performed;

2) The valve controls the gas pipeline, and the explosion-proof heater group of group B usually passes fluoride gas warmly, and the internal adsorbent adsorbs impurities. At the same time, the explosion-proof heater group of group A is connected to nitrogen, and the PLC program controls the heating temperature of the explosion-proof heaters in the explosion-proof heater group, and the heating is performed in stages to desorb the impurities on the adsorbent, and the nitrogen gas takes away the impurities into the exhaust gas treatment equipment; until one works The process ends, go to step 3;

3), repeat steps 1-2, the explosion-proof heater group AB group is used interchangeably to increase the work efficiency.

Finally, it should also be noted that the above enumeration is only a few specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and many modifications are possible. All deformations that those of ordinary skill in the art can directly derive or associate from the disclosure of the present invention shall be considered as the protection scope of the present invention.

Claims (5)

1. an explosion-proof heater in a fluoride purification system, characterized in that: comprising a heating vessel (1) and a thermal insulation sleeve (2); The outer side of the heating container (1) is sleeved with a thermal insulation sleeve (2); The heating vessel (1) comprises an upper section (11), a middle section (12) and a lower section (13) arranged along its length direction; the upper section (11), the middle section (12) and the lower section (13) are located near the middle All are equipped with heating detection components; The heating detection assembly includes a heating pipe (4) and an explosion-proof sensor (3) used in combination; The heating pipe (4) is located in the thermal insulation sleeve (2), the heating pipe (4) is spirally arranged at a position close to the surrounding of the heating container (1), and an explosion-proof junction box (41) is also provided on the heating pipe (4); The explosion-proof sensor (3) is fixedly arranged on the thermal insulation sleeve (2) through the sensor mounting bracket (31); The sensor mounting bracket (31) is a truncated cone-shaped frame, the bottom of the sensor mounting bracket (31) is fixedly connected to the thermal insulation sleeve (2) as a whole, and the top of the sensor mounting bracket (31) is provided with a rotating sleeve (32), the rotating sleeve (32) The inner surface is provided with internal threads; A rotating shaft (33) is installed on the explosion-proof sensor (3), and an outer thread is provided on the outer surface of the rotating shaft (33); The rotating sleeve (32) is adapted to the rotating shaft (33), the rotating shaft (33) is threadedly connected with the rotating sleeve (32), and the detection probe (34) of the explosion-proof sensor (3) passes through the thermal insulation sleeve (2) The temperature measuring hole (21) on the top is in contact with the outer wall of the heating container (1); The explosion-proof sensor (3) is signal-connected to the explosion-proof junction box (41) through a signal pipe. 2. the explosion-proof heater in a kind of fluoride purification system according to claim 1, is characterized in that: The upper section (11), the middle section (12) and the lower section (13) of the heating container (1) are detachably connected. 3. the explosion-proof heater in a kind of fluoride purification system according to claim 2, is characterized in that: The upper section (11), the middle section (12) and the lower section (13) of the heating vessel (1) are filled with a fluoride adsorbent. 4. a fluoride purification system is characterized in that: comprise AB two groups of explosion-proof heater groups, and every group of explosion-proof heater groups all comprise several explosion-proof heaters connected in series in turn; The nitrogen channels are respectively connected with the inlets of the AB groups of explosion-proof heater groups; The fluoride gas channels are respectively connected with the inlets of the AB groups of explosion-proof heater groups; The outlets of the AB groups of explosion-proof heater groups are respectively connected with subsequent treatment equipment and exhaust gas treatment equipment. 5. a using method of fluoride purification system is characterized in that: comprise the following steps: 1) The explosion-proof heater group of group A usually passes fluoride gas at a temperature, and the internal adsorbent absorbs impurities; at the same time, the explosion-proof heater group of group B is connected to nitrogen, and the PLC program controls the heating temperature of the explosion-proof heater in the explosion-proof heater group, and the timing is segmented. Heating to desorb the impurities on the adsorbent, and the nitrogen gas takes away the impurities into the tail gas treatment equipment; until the end of a working process, step 2 is performed; 2) The explosion-proof heater group of group B usually passes fluoride gas at a temperature, and the internal adsorbent adsorbs impurities; at the same time, the explosion-proof heater group of group A is connected to nitrogen, and the PLC program controls the heating temperature of the explosion-proof heater in the explosion-proof heater group, and the timing is segmented. Heating to desorb the impurities on the adsorbent, and the nitrogen gas takes away the impurities into the tail gas treatment equipment; until the end of a working process, step 3 is performed; 3), repeat steps 1-2, the explosion-proof heater group of group AB is used interchangeably.

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