CN108176389B - On-line regeneration method of adsorbent for SF6 purification treatment device - Google Patents

Abstract

An on-line regeneration method for an adsorbent of an SF ₆ purification treatment device, comprising the steps of: intercepting nitrogen gas inlet pipes, SF ₆ gas inlet pipes, first, second, third, fourth, fifth, sixth and seventh pipes; The unit and the adsorption tower are connected as required; valves, pressure reducing valves, filters and vacuum pumps are installed on the corresponding pipelines; normal purification treatment is performed, and the gas is discharged to the outside through the tail gas outlet of the lye tank; when the adsorption capacity of the adsorbent decreases or loses the processing capacity In the present invention, the adsorbent in the adsorption tower is uniformly heated and heated by circulating through the inert nitrogen gas, and then vacuum is applied to realize online depressurization and heating regeneration, so as to ensure uniform temperature distribution in the adsorption tower cavity and realize heating. The tube is completely isolated from the adsorbent, which eliminates hidden safety risks such as inadvertent operation by workers and inability to protect the temperature control system in time, completely solves the problem of air tightness of the device affected by loading and unloading, greatly improves the regeneration cycle of the adsorbent, and realizes the recycling and reuse of the adsorbent.

Description

On-line regeneration method of adsorbent for SF6 purification treatment device

technical field

The invention relates to an SF ₆ purification treatment device, in particular to an on-line regeneration method of an adsorbent of the SF ₆ purification treatment device.

Background technique

With the increasing efforts of the state to control greenhouse gas emissions, and the importance of power grid companies on the recycling and reuse of SF ₆ (sulfur hexafluoride) gas, the demand for SF ₆ purification and treatment devices has increased rapidly. The adsorption tower of the device plays the role of adsorbing impurities in the process of SF ₆ purification, but the adsorbent in its inner cavity will be saturated after long-term purification treatment, resulting in a decrease in adsorption capacity and even loss of treatment capacity.

Recycling of adsorbents can be achieved through regeneration, reducing treatment costs. Both depressurization or heating are beneficial to adsorbate desorption or adsorbent regeneration. At present, the following two regeneration methods are commonly used:

①Take out the adsorbent, put it into a vacuum drying box, vacuumize it, and heat it to separate out the adsorbed impurities. However, the loading and unloading workload of this method is large, the air tightness of the purification treatment device is easily affected, and the regeneration cycle is long.

②Insert the heating tube directly into the adsorption tower, heat the adsorbent and then vacuumize it. This method can solve the problem that the air tightness of the purification treatment device is affected by loading and unloading, and can shorten the regeneration cycle to a certain extent. However, due to the direct contact between the heating tube and the adsorbent and the poor thermal conductivity of the adsorbent itself, when it is regenerated online, it is difficult to ensure uniform heating, and it is easy to burn the micropores of the adsorbent. At the same time, there are other pressure vessels and pressurized pipelines in the purification treatment device. During operation, it is easy to cause damage to the heating tube and the adsorbent, and even SF ₆ gas is decomposed by the arc to generate a large amount of toxic and harmful gases, which poses certain safety risks.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide an on-line regeneration method for the adsorbent of the SF ₆ purification treatment device, which can not only ensure the air tightness of the purification treatment device, shorten the regeneration cycle of the adsorbent, but also avoid heating pipes, adsorbents, etc. If it is damaged, it can ensure that the temperature in the adsorption tower cavity is evenly distributed, ensure the safety of use, and realize the recycling and reuse of the adsorbent.

The technical solution of the present invention is to provide an on-line regeneration method for an adsorbent of an SF ₆ purification treatment device, comprising the following steps:

( ₁ ) intercept the nitrogen gas inlet pipe, the SF gas inlet pipe, the first pipe, the second pipe, the third pipe, the fourth pipe, the fifth pipe, the sixth pipe and the seventh pipe;

( ₂ ) the outlet of the nitrogen gas inlet pipe and the SF gas inlet pipe is communicated with the inlet of the first pipe at the same time, the outlet of the first pipe is communicated with the inlet of the heating unit, the outlet of the heating unit is communicated with the inlet of the third pipe, the first The outlet of the third pipe and the second pipe is connected with the inlet of the adsorption tower at the same time, the outlet of the adsorption tower is connected with the inlet of the fourth pipe, and the outlet of the fourth pipe is connected with the inlet of the fifth, sixth and seventh pipes at the same time;

(3) Install the manual valve S1 on the nitrogen intake pipe, install the manual valve S10 on the SF ₆ intake pipe, install the pressure reducing valve and the manual valve S2 on the front and rear of the first pipe, and the inlet of the second pipe is located at Between the pressure reducing valve and the manual valve S2, and communicate with the first pipeline, the manual valve S3 is installed on the second pipeline, the manual valve S4 is installed on the third pipeline, and the manual valve S7, the filter and the manual valve S8 are installed on the fifth pipeline. , Manual valve S9 and vacuum pump are installed on the sixth pipeline, manual valve S5 and two-position three-way valve S6 are installed on the seventh pipeline, and manual valve S5 is located at the inlet end;

(4) the outlet of the sixth pipeline is communicated with the outlet of the seventh pipeline, and the inlet of the lye tank is communicated with the air outlet of the two-position three-way valve S6, and the tail gas outlet of the lye tank is communicated with the outside;

(5) Carry out normal purification treatment

Close the manual valves S1, S2, S4, S9, S5 and the two-position three-way valve S6, connect the outlet of the buffer tank of the processing unit of the SF ₆ purification treatment device to the inlet of the SF ₆ intake pipe, and insert the outlet of the fifth pipe into the At the power unit inlet of the SF ₆ purification treatment device, adjust the pressure reducing valve to reduce the pressure of the SF ₆ gas to 0.6MPa. Under the action of the pressure, the SF ₆ gas enters the adsorption tower through the manual valve S10, the pressure reducing valve and the manual valve S3 in turn. , after the pressure swing adsorption of the adsorption tower, it enters the power unit through the outlet of the adsorption tower, the manual valve S7, the filter and the manual valve S8 in turn, and finally, the compressor of the power unit pumps it to the cryogenic unit for purification;

(6) When the adsorption capacity of the adsorbent in the adsorption tower decreases or loses the processing capacity, first close the manual valves S10, S3, S7, S8, S9, open the manual valves S1, S2, S4, S5 and S6, and then set the purity to The 99.999% nitrogen cylinder is connected to the nitrogen inlet pipeline, the cylinder valve is opened, and the pressure reducing valve is adjusted to reduce the gas pressure of nitrogen to 1MPa. Under the action of pressure, nitrogen enters through manual valve S1, pressure reducing valve and manual valve S2 in turn. The heating unit conducts heat exchange, and nitrogen with a temperature of 200°C flows out from the outlet of the heating unit, enters the adsorption tower through the manual valve S4, and then enters the lye tank from the manual valve S5 and the two-position three-way valve S6 for neutralization. treatment, and finally discharged to the outside from the tail gas outlet of the lye tank;

(7) When the average temperature in the inner cavity of the adsorption tower reaches 180°C, close the heating unit, so that the pressure in the inner cavity of the adsorption tower is reduced to atmospheric pressure, and then close the manual valves S1, S2, S4, S5 in turn;

(8) switch the two-position three-way valve S6, make the outlet of the vacuum pump communicate with the inlet of the lye tank, open the manual valve S9 and the vacuum pump to vacuumize the adsorption tower, when the pressure reaches 50Pa, close the manual valve S9 and the vacuum pump, open Manual valve S5 and switching two-position three-way valve S6 make the outlet of the adsorption tower communicate with the inlet of the lye tank;

(9) The adsorption tower is cooled down by introducing nitrogen into it, and it can be used only after it reaches normal temperature.

In the method for on-line regeneration of the adsorbent of the SF ₆ purification treatment device according to the present invention, wherein, the heating units are arranged in two groups, one on top and the other on the bottom in parallel, and each group of heating units includes a heat preservation container, a heating pipe, and a plurality of heating units staggered along the axial direction. The partition plate arranged in the inner cavity of the thermal insulation container, the heating pipe extends into the inner cavity of the thermal insulation container, and is installed on the head of the thermal insulation container through the flange, the tails of the two thermal insulation containers are connected in series through the flange, and the tails of each thermal insulation container are connected in series. A thermocouple is installed, a safety valve is installed in the middle of the upper heat preservation container, a second platinum resistor is installed near the head of the lower heat preservation container, and a bracket is installed at the bottom of the lower heat preservation container. The platinum resistances are all electrically connected to the controller.

The online regeneration method of the adsorbent of the SF ₆ purification treatment device of the present invention, wherein, three first platinum resistors are installed on the side wall of the adsorption tower in sequence from top to bottom, and the three first platinum resistors are all connected with the control electrical connection.

In the online regeneration method of the adsorbent of the SF ₆ purification treatment device of the present invention, wherein, a heat exchange fan is installed on the sixth pipeline, and the heat exchange fan is located between the manual valve S9 and the vacuum pump.

In the method for on-line regeneration of the adsorbent of the SF ₆ purification treatment device of the present invention, wherein the sixth pipeline is equipped with an inflatable solenoid valve V1, and the inflatable solenoid valve V1 is located between the heat exchange fan and the vacuum pump.

The online regeneration method of the adsorbent of the SF ₆ purification treatment device according to the present invention, wherein, the third pipeline is equipped with a flow meter L1 and a first pressure gauge P1, and the fourth pipeline is equipped with a second pressure gauge P2, so The sixth pipeline is equipped with a vacuum gauge Z1, and the vacuum gauge Z1 is located between the heat exchange fan and the charging solenoid valve V1.

After adopting the above structure, compared with the prior art, the online regeneration method of the adsorbent of the SF ₆ purification treatment device of the present invention has the following advantages: different from the prior art, the present invention has the following advantages: It can be immediately converted to the online regeneration of the adsorbent, thereby saving a lot of loading and unloading of the original adsorbent, ensuring the air tightness of the purification treatment device, and greatly shortening the regeneration cycle of the adsorbent; The adsorbents are separated from each other, and the two are not in direct contact, so the damage to the heating tube and the adsorbent is avoided; the flow of nitrogen can ensure the uniform temperature distribution in the adsorption tower cavity, ensure the safety of use, and realize the cycle of the adsorbent Reuse.

Description of drawings

Fig. 1 is the structural representation when each pipeline is connected together by adopting the adsorbent online regeneration method of the SF ₆ purification treatment device of the present invention;

Fig. 2 is the cross-sectional enlarged structural schematic diagram of the heating unit in Fig. 1;

FIG. 3 is a cross-sectional enlarged structural schematic diagram of the adsorption tower in FIG. 1 .

Detailed ways

Below in conjunction with the accompanying drawings and specific embodiments, the adsorbent online regeneration method of the SF ₆ purification treatment device of the present invention will be further described in detail:

As shown in Figures 1-3, in this specific embodiment, the online regeneration method of the adsorbent of the SF ₆ purification treatment device of the present invention includes the following steps:

(1) Intercept the nitrogen gas inlet pipe 10, the _SF6 gas inlet pipe 11, the first pipe 13, the second pipe 14, the third pipe 15, the fourth pipe 16, the fifth pipe 17, the sixth pipe 18 and the seventh pipe 19;

(2) Connect the outlet of the nitrogen gas inlet pipe 10 and the _SF6 gas inlet pipe 11 to the inlet of the first pipe 13 at the same time, the outlet of the first pipe 13 is communicated with the inlet of the heating unit 25, and the outlet of the heating unit 25 is connected to the third The inlet of the pipeline 15 is connected, the outlet of the third pipeline 15 and the second pipeline 14 is connected with the inlet of the adsorption tower 24 at the same time, the outlet of the adsorption tower 24 is connected with the inlet of the fourth pipeline 16, and the outlet of the fourth pipeline 16 is connected with the fifth pipeline 16 at the same time. The inlets of the pipeline 17, the sixth pipeline 18, and the seventh pipeline 19 are connected;

(3) Install the manual valve S1 on the nitrogen gas inlet pipe 10, install the manual valve S10 on the SF ₆ gas inlet pipe 11, install the pressure reducing valve 12 and the manual valve S2 on the front and rear of the first pipe 13, respectively, and the second The inlet of the pipeline 14 is located between the pressure reducing valve 12 and the manual valve S2, and communicates with the first pipeline 13. The manual valve S3 is installed on the second pipeline 14, the manual valve S4 is installed on the third pipeline 15, and the fifth pipeline 17 is installed. Manual valve S7, filter 22 and manual valve S8, manual valve S9 and vacuum pump 21 are installed on the sixth pipeline 18, manual valve S5 and two-position three-way valve S6 are installed on the seventh pipeline 19, and the manual valve S5 is located at the inlet end;

(4) the outlet of the sixth pipeline 18 is communicated with the outlet of the seventh pipeline 19, and the inlet of the lye tank 20 is communicated with the air outlet of the two-position three-way valve S6, and the tail gas outlet of the lye tank 20 is communicated with the outside;

(5) Carry out normal purification treatment

Close the manual valves S1, S2, S4, S9, S5 and the two-position three-way valve S6, connect the outlet of the buffer tank of the processing unit of the SF ₆ purification treatment device to the inlet of the SF ₆ intake pipe 11, and connect the fifth pipe 17 to the outlet of the buffer tank. The outlet is inserted into the power unit inlet of the SF ₆ purification treatment device, and the pressure reducing valve 12 is adjusted to reduce the pressure of the SF ₆ gas to 0.6MPa. Under the action of the pressure, the SF ₆ gas passes through the manual valve S10, the pressure reducing valve 12, and the manual valve S3 in turn. Enter the adsorption tower 24, after the adsorption tower pressure swing adsorption, and then enter the power unit through the outlet of the adsorption tower, the manual valve S7, the filter 22 and the manual valve S8 in turn, and finally, the compressor of the power unit will pump it to the depth of Cold unit for purification;

(6) When the adsorption capacity of the adsorbent in the adsorption tower 24 decreases or loses the processing capacity, first close the manual valves S10, S3, S7, S8, S9, open the manual valves S1, S2, S4, S5 and S6, and then the purity Connect the 99.999% nitrogen cylinder to the nitrogen inlet pipe 10, open the cylinder valve, and adjust the pressure reducing valve 12 to reduce the gas pressure of nitrogen to 1MPa. Under the action of pressure, the nitrogen passes through the manual valve S1, pressure reducing valve 12, The manual valve S2 enters the heating unit 25 for heat exchange, and nitrogen with a temperature of 200°C flows out from the outlet of the heating unit 25, enters the adsorption tower 24 through the manual valve S4, and then enters from the manual valve S5 and the two-position three-way valve S6. Neutralization is carried out in the lye tank 20, and is finally discharged to the outside from the tail gas outlet of the lye tank 20;

(7) When the average temperature of the inner cavity of the adsorption tower 24 reaches 180 ° C, the heating unit is closed, so that the pressure in the inner cavity of the adsorption tower is reduced to atmospheric pressure, and then the manual valves S1, S2, S4, S5 are closed in turn;

(8) switch two-position three-way valve S6, make the outlet of vacuum pump 21 communicate with the inlet of lye tank 20, open manual valve S9 and vacuum pump 21 to vacuumize adsorption tower 24, when the pressure reaches 50Pa, close manual valve S9 and vacuum pump 21, open manual valve S5 and switch two-position three-way valve S6, so that the outlet of adsorption tower 24 is communicated with the inlet of lye tank 20;

(9) The adsorption tower 24 can be cooled by feeding nitrogen into it, and it can be used only after reaching normal temperature.

The heating unit 25 is used to heat the inert nitrogen gas, and after the nitrogen gas reaches the technological requirements, the adsorbent in the adsorption tower 24 is uniformly heated and heated to release the adsorbate. The lye tank 20 is used to neutralize the impurities resolved by the adsorbent in the cavity of the adsorption tower, so as to realize pollution-free and zero-emission in the regeneration process.

In order to better heat the nitrogen gas, the heating units 25 are arranged in two groups, and the two groups of heating units 25 are arranged in parallel one above the other. Each group of heating units 25 includes a heat preservation container 251 , a heating tube 253 and a plurality of partitions 252 staggered in the inner cavity of the heat preservation container 251 in the axial direction. The partition plate 252 can make the nitrogen gas flow through the inner cavity of the heat preservation container 251 in a wave shape, so as to increase the heat exchange efficiency. The heating tube 253 extends into the inner cavity of the thermal insulation container 251 and is installed on the head of the thermal insulation container 251 through a flange. When the inner cavity of the thermal insulation container 251 is cleaned, it is easy to disassemble, so as to facilitate maintenance and replacement of the heating tube 253 The tails of the two thermal insulation containers 251 are connected in series by flanges, and a thermocouple 26 is installed at the tail of each thermal insulation container 251. The two thermocouples 26 are used to collect the temperature signal in the cavity of the thermal insulation container 251 and carry out an over-temperature alarm. When the temperature is abnormal, the power supply of the heating pipe 253 is immediately cut off, which effectively prolongs the service life of the heating pipe 253; the safety valve 28 is installed in the middle part of the upper heat preservation container, the second platinum resistance 27 is installed near the head part of the lower heat preservation container, and the lower heat preservation container is installed with a second platinum resistance 27. A bracket 254 is installed at the bottom of the heat preservation container 251 for easy support; the heating tube 253, the thermocouple 26 and the second platinum resistor 27 are all electrically connected to the controller. The second platinum resistor 27 is used to collect the temperature signal in the heat preservation container 251 in real time, and transmit it to the controller, so as to automatically adjust the output power of the heating tube 253, so that the temperature of the outflowing nitrogen can evenly reach the set value of 200°C.

A heat exchange fan 23 is installed on the sixth pipe 18 , the heat exchange fan 23 is located between the manual valve S9 and the vacuum pump 21 , and the heat exchange fan 23 is used to cool the high temperature nitrogen to protect the vacuum pump 21 . The sixth pipeline 18 is also provided with a charging solenoid valve V1 , and the charging solenoid valve V1 is located between the heat exchange fan 23 and the vacuum pump 21 . The function of the inflatable solenoid valve V1 is: when working (that is, in the power-on state), the valve stem in the valve moves to block (seal) the inflatable port, and at the same time, the vacuum pump 21 is connected to the adsorption tower 24, and the gas in its inner cavity is connected. When it is not working (ie, power-off state), the valve stem returns to its original position under the action of the spring, which separates the vacuum pump 21 from the inner cavity of the adsorption tower 24, and the outside atmosphere enters the vacuum pump 21 through the inflating port of the inflatable solenoid valve V1, Balance the pressure in the pump to prevent the vacuum pump 21 from returning oil to the adsorption tower 24 .

Three first platinum resistors 29 are sequentially installed on the side wall of the adsorption tower 24 from top to bottom, and the three first platinum resistors 29 are all electrically connected to the controller. The first platinum resistor 29 is used to collect the temperature signals of the upper, middle and lower positions in the cavity of the adsorption tower 24 in real time, and transmit them to the controller, so as to facilitate the judgment of the uniform heating of the adsorbent. When the average value reaches the set value of 180°C, The heating unit 25 is turned off.

The third pipe 15 is provided with a flow meter L1 and a first pressure gauge P1, the fourth pipe 16 is provided with a second pressure gauge P2, the sixth pipe 18 is provided with a vacuum gauge Z1, and the vacuum gauge Z1 is located between the heat exchange fan 23 and the charging electromagnetic between valve V1.

The invention uniformly heats and warms the adsorbent in the adsorption tower by heating the inert nitrogen gas and then circulates it, and then vacuumizes it to realize online depressurization and heating regeneration, and can effectively realize the uniform temperature in the adsorption tower cavity. Distribution, to achieve complete isolation of the heating tube and the adsorbent, to eliminate the hidden safety risks such as inadvertent operation of the staff and failure of the temperature control system to protect in time, completely solve the problem of air tightness of the device affected by loading and unloading, and greatly improve the regeneration cycle of the adsorbent. Recycling of adsorbents.

In this specific embodiment, the heat exchange fan 23, the charging solenoid valve V1, the vacuum pump 21, the lye tank 20, the two-position three-way valve S6, the thermocouple 26, the controller, the second platinum resistance 27 and the first The platinum resistance 29 is a commercially available product.

The above-mentioned embodiments merely describe the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, those of ordinary skill in the art can make various modifications to the technical solutions of the present invention. Deformations and improvements should all fall within the protection scope of the present invention.

Claims (6)

1. SF (sulfur hexafluoride)₆The online regeneration method of the adsorbent of the purification treatment device is characterized by comprising the following steps:

(1) intercepting nitrogen gas inlet pipeline (10) and SF₆An air inlet pipeline (11), a first pipeline (13), a second pipeline (14), a third pipeline (15), a fourth pipeline (16), a fifth pipeline (17), a sixth pipeline (18) and a seventh pipeline (19);

(2) introducing nitrogen into the pipeline (10) and SF₆The outlet of the air inlet pipeline (11) is communicated with the inlet of the first pipeline (13), the outlet of the first pipeline (13) is communicated with the inlet of the heating unit (25), the outlet of the heating unit (25) is communicated with the inlet of the third pipeline (15), the outlets of the third pipeline (15) and the second pipeline (14) are communicated with the inlet of the adsorption tower (24), the outlet of the adsorption tower (24) is communicated with the inlet of the fourth pipeline (16), and the outlet of the fourth pipeline (16) is communicated with the inlets of the fifth, sixth and seventh pipelines;

(3) a manual valve S1 is arranged on the nitrogen gas inlet pipeline (10), SF₆Air inlet pipe (11)) A manual valve S10 is installed on the upper portion, a pressure reducing valve (12) and a manual valve S2 are installed on the front portion and the rear portion of a first pipeline (13) respectively, the inlet of a second pipeline (14) is located between the pressure reducing valve (12) and the manual valve S2 and is communicated with the first pipeline (13), a manual valve S3 is installed on the second pipeline (14), a manual valve S4 is installed on a third pipeline (15), a manual valve S7, a filter (22) and a manual valve S8 are installed on a fifth pipeline (17), a manual valve S9 and a vacuum pump (21) are installed on a sixth pipeline (18), a manual valve S5 and a two-position three-way valve S6 are installed on a seventh pipeline (19), and the manual valve S5 is located at the inlet end;

(4) the outlet of the sixth pipeline (18) is communicated with the outlet of the seventh pipeline (19), the inlet of the lye tank (20) is communicated with the air outlet of a two-position three-way valve S6, and the tail gas outlet of the lye tank (20) is communicated with the outside;

(5) performing normal purification treatment

The manual valves S1, S2, S4, S9, S5 and the two-position three-way valve S6 are closed, and SF is mixed with₆SF is accessed to an outlet of a buffer tank of a processing unit of the purification processing device₆The inlet of the air inlet pipe (11) and the outlet of the fifth pipe (17) is inserted into SF₆The inlet of the power unit of the purification treatment device is adjusted by a pressure reducing valve (12) to SF₆The gas pressure is reduced to 0.6MPa, and under the action of the pressure, SF₆Gas enters an adsorption tower (24) through a manual valve S10, a pressure reducing valve (12) and a manual valve S3 in sequence, is subjected to pressure swing adsorption by the adsorption tower, then enters a power unit through an outlet of the adsorption tower, the manual valve S7, a filter (22) and the manual valve S8 in sequence, and finally is pumped to a cryogenic unit by a compressor of the power unit for purification treatment;

(6) when the adsorption capacity of the adsorbent in the adsorption tower (24) is reduced or the treatment capacity is lost, firstly, closing manual valves S10, S3, S7, S8 and S9, opening manual valves S1, S2, S4, S5 and a two-position three-way valve S6, then connecting a nitrogen steel cylinder with the purity of 99.999% into a nitrogen gas inlet pipeline (10), opening a steel cylinder valve, adjusting a pressure reducing valve (12) to reduce the gas pressure of the nitrogen gas to 1MPa, allowing the nitrogen gas to sequentially enter a heating unit (25) through the manual valve S1, the pressure reducing valve (12) and the manual valve S2 under the pressure effect of heat exchange, allowing the nitrogen gas with the temperature of 200 ℃ to flow out of an outlet of the heating unit (25), enter the adsorption tower (24) through the manual valve S4, then enter an alkali liquor tank (20) through the manual valve S5 and the two-position three-way valve S6 for neutralization treatment, and finally discharging the tail gas from an alkali liquor tank (20) to the;

(7) when the average temperature of each part in the inner cavity of the adsorption tower (24) reaches 180 ℃, the heating unit is closed, the pressure of the inner cavity of the adsorption tower is reduced to the atmospheric pressure, and then the manual valves S1, S2, S4 and S5 are closed in sequence;

(8) switching a two-position three-way valve S6 to enable the outlet of the vacuum pump (21) to be communicated with the inlet of the lye tank (20), opening a manual valve S9 and the vacuum pump (21) to vacuumize the adsorption tower (24), closing the manual valve S9 and the vacuum pump (21) when the pressure reaches 50Pa, opening a manual valve S5 and switching a two-position three-way valve S6 to enable the outlet of the adsorption tower (24) to be communicated with the inlet of the lye tank (20);

(9) the adsorption tower (24) is cooled by introducing nitrogen into the adsorption tower, and can be used after reaching normal temperature.

2. SF according to claim 1₆The method for regenerating the adsorbent of the purification treatment device on line is characterized in that: two groups of heating units (25) are arranged in parallel, one heating unit is arranged above the other heating unit, each group of heating units (25) comprises a heat-insulating container (251), heating pipes (253) and a plurality of partition plates (252) which are arranged in the inner cavity of the heat-insulating container (251) in an axially staggered manner, the heating pipes (253) extend into the inner cavity of the heat-insulating container (251), the tail parts of the two heat-insulating containers (251) are communicated in series through the flange, a thermocouple (26) is installed at the tail part of each heat-insulating container (251), a safety valve (28) is installed in the middle of the upper heat-insulating container, a second platinum resistor (27) is installed at the position, close to the head part, of the lower heat-insulating container, a support (254) is installed at the bottom of the lower heat-insulating container (251), and the heating pipe (253), the thermocouple (26) and the second platinum resistor (27) are all electrically connected with the controller.

3. SF according to claim 2₆The method for regenerating the adsorbent of the purification treatment device on line is characterized in that: three first platinum resistors (29) are sequentially arranged on the side wall of the adsorption tower (24) from top to bottom, and the three first platinum resistors (29) are electrically connected with a controllerAnd (4) connecting.

4. SF according to any of claims 1 to 3₆The method for regenerating the adsorbent of the purification treatment device on line is characterized in that: and a heat exchange fan (23) is mounted on the sixth pipeline (18), and the heat exchange fan (23) is positioned between the manual valve S9 and the vacuum pump (21).

5. SF according to claim 4₆The method for regenerating the adsorbent of the purification treatment device on line is characterized in that: and an inflation solenoid valve V1 is mounted on the sixth pipeline (18), and the inflation solenoid valve V1 is positioned between the heat exchange fan (23) and the vacuum pump (21).

6. SF according to claim 5₆The method for regenerating the adsorbent of the purification treatment device on line is characterized in that: the third pipeline (15) is provided with a flow meter L1 and a first pressure gauge P1, the fourth pipeline (16) is provided with a second pressure gauge P2, the sixth pipeline (18) is provided with a vacuum gauge Z1, and the vacuum gauge Z1 is positioned between the heat exchange fan (23) and the inflation solenoid valve V1.

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