CN216594758U - Double-channel full-automatic intelligent quick mercury detector - Google Patents
Double-channel full-automatic intelligent quick mercury detector Download PDFInfo
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- CN216594758U CN216594758U CN202120756916.5U CN202120756916U CN216594758U CN 216594758 U CN216594758 U CN 216594758U CN 202120756916 U CN202120756916 U CN 202120756916U CN 216594758 U CN216594758 U CN 216594758U
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Abstract
The utility model discloses a double-channel full-automatic intelligent rapid mercury detector which comprises an automatic sampling system, a double-channel system, an absorption cell system and a gas circuit system, wherein the automatic sampling system is connected with the double-channel system and used for inputting a sample boat containing a sample into the double-channel system through the automatic sampling system, the absorption cell system is connected with the double-channel system, the double-channel system pyrolyzes mercury in the sample into mercury simple substance vapor in a thermal cracking mode, the mercury simple substance vapor is input into the absorption cell system under the action of the gas circuit system, and the absorption cell system is used for detecting the absorbance of light intensity difference effect caused by mercury simple substance vapor to mercury special light source emission characteristic spectral lines in the absorption cell. The dual-channel full-automatic intelligent rapid mercury detector provided by the utility model utilizes a dual-channel sequential detection mode to simultaneously detect two sample results by one-time test, so that the sample test time is greatly shortened, and the detection efficiency is improved.
Description
Technical Field
The utility model relates to the field of analytical chemistry, and mainly relates to a double-channel full-automatic intelligent rapid mercury detector.
Background
The detection principle of the rapid mercury detector mainly comprises two types: one is pyrolysis catalysis-gold amalgam-cold atomic absorption spectrometry; another class is pyrolysis-zeeman effect-cold atomic absorption spectroscopy. The anti-interference capability of the Zeeman effect on a substrate of a high organic matter sample is poor, so that the Zeeman effect is the dominant in a laboratory rapid mercury-measuring instrument.
The existing mercury measuring instrument mainly has the following defects:
a. the single sample testing time is about 5-6 minutes, so that the batch sample testing efficiency is low;
b. the cracking heating mode is a traditional furnace wire heat radiation mode, the heating rate is low, and the time is usually more than 2.5 minutes, so that the testing efficiency is greatly influenced;
c. the number of sample bits of the automatic sample introduction part is less: the NiC MA3000 in Japan is 100 bits, the LEEMAN Hydra II in USA is 70 bits, the Milestone DMA-80 in Italy is 40 bits, and domestic customers often need large-batch detection of samples;
d. when the imported similar products are used for testing, the sample sampling amount is large, and a large amount of condensed water vapor causes the system to be unstable in the testing process, so that the stability of the testing result is influenced;
e. the carrier gas adopts high-purity oxygen or purified air, and when mercury vapor released by the gold amalgamation system enters the absorption pool, a small part of mercury vapor atoms are inevitably combined with the oxygen, so that the absorption effect is weakened, and the detection result is influenced to a certain extent;
f. the light sources for the mercury detectors are all low-pressure mercury lamps, so that the lamp sources are always preheated for a long time, and the detection efficiency is influenced;
g. the linear range is generally improved through the double absorption cells, so that the energy of light sources received by the absorption cells is inconsistent; meanwhile, the absorption pool is made of stainless steel alloy, so that a high organic matter sample is easy to stain when being tested, and the detection result of ultra-trace mercury is greatly influenced;
h. no remote control and real-time monitoring system is provided, and data and the running state of an instrument cannot be acquired in real time when no person is on duty.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a double-channel full-automatic intelligent rapid mercury detector.
The utility model discloses a double-channel full-automatic intelligent rapid mercury detector which comprises an automatic sample introduction system, a double-channel system, an absorption cell system and a gas path system, wherein the gas path system and the automatic sample introduction system are connected with the double-channel system and are used for inputting a sample boat containing a sample into the double-channel system through the automatic sample introduction system, the absorption cell system is connected with the double-channel system, the double-channel system pyrolyzes mercury in the sample into mercury simple substance vapor in a thermal cracking mode, the mercury simple substance vapor is input into the absorption cell system under the action of the gas path system, and the absorption cell system is used for detecting the absorbance of light intensity difference effect caused by mercury simple substance vapor to mercury special light source emission characteristic spectral lines in the absorption cell.
The utility model discloses a double-channel full-automatic intelligent rapid mercury detector, wherein a double-channel system comprises a first channel and a second channel which are parallel, each channel comprises a cracking catalytic system and a gold amalgamation system connected with the cracking catalytic system, the cracking catalytic system of each channel is connected with an automatic sampling system and a gas circuit system, the gold amalgamation system of each channel is connected with an absorption cell system, the cracking catalytic system is used for heating a solid or liquid sample to generate mercury elementary substance vapor, the gold amalgamation system is used for enriching the mercury elementary substance vapor, the heating gold amalgamation system releases the mercury elementary substance vapor, and carrier gas of a carrier gas system is used for inputting the released mercury elementary substance vapor into the absorption cell system.
The utility model discloses a double-channel full-automatic intelligent rapid mercury detector, wherein an automatic sample feeding system comprises a driving support device and two sets of pushing sample feeding devices arranged on the driving support device, the two sets of pushing sample feeding devices are arranged in a stacked mode and are respectively correspondingly matched with a first channel and a second channel, each pushing sample feeding device comprises a sample disc, a longitudinal cylinder and a transverse two-stage cylinder, a plurality of round holes used for placing sample boats are formed in the sample disc, the sample boats containing samples are inserted into the round holes, a central shaft of the sample disc is connected with an output shaft of a motor, so that the motor drives the sample disc to rotate, the longitudinal cylinder is arranged below the sample disc and is used for pushing the sample boats to move upwards away from the sample disc, and the transverse two-stage cylinder is arranged above the sample disc and is used for transversely pushing the sample boats to enter the first channel or the second channel.
The utility model discloses a double-channel full-automatic intelligent rapid mercury detector, wherein an absorption cell system comprises a light source, an absorption cell, a buffer cavity and a detector, the absorption cell is made of quartz, the absorption cell comprises a long cell, a middle cell and a short cell which are sequentially connected, the long cell and the middle cell are connected through a first buffer cavity, and the middle cell and the short cell are connected through a second buffer cavity.
The utility model relates to a double-channel full-automatic intelligent rapid mercury detector, wherein a gas circuit system comprises a purified air/oxygen gas source and an argon gas source, the purified air/oxygen gas source and the argon gas source are respectively connected with a cracking catalytic system of each channel through pipelines, electromagnetic valves are arranged on the pipelines, the double-channel full-automatic intelligent rapid mercury detector also comprises a tail gas purification system, the tail gas purification system is respectively connected with a first channel, a second channel and an absorption cell through three branch pipelines, and the three branch pipelines are provided with the electromagnetic valves, so that tail gas from gold amalgam systems of the first channel and the second channel is controlled by the electromagnetic valves to not enter the absorption cell system and is respectively and directly discharged into the tail gas purification system in a sample cracking process; when the sample cracking is completed, the released mercury vapor is captured by the gold amalgamation system, the carrier gas is switched from pure oxygen or purified air to argon, and the argon is used as the carrier gas to load the mercury simple substance vapor generated by the gold amalgamation system for pyrolysis into the absorption cell system for detection.
The utility model discloses a double-channel full-automatic intelligent rapid mercury detector, which further comprises a controller, wherein the controller is connected with a detector, a motor and an electromagnetic valve.
The double-channel full-automatic intelligent rapid mercury detector further comprises a light source drift correction system, the light source drift correction system comprises a feedback controller, the light source and the absorption cell are arranged between the two detectors, the two detectors are used for monitoring the light source in real time and feeding back energy change of the light source to the feedback controller, and the feedback controller conducts original light intensity confirmation again before reading absorbance so as to ensure that the absorbed light intensity is calculated based on the current original light intensity.
The utility model relates to a double-channel full-automatic intelligent rapid mercury detector, wherein the lengths of a long pool, a middle pool and a short pool are respectively 12-16cm, 6-8cm and 0.5-2cm, the inner diameter is 1-3mm, a first buffer cavity and a second buffer cavity are cylindrical, the lengths are respectively 4-6cm and 2-4cm, and the inner diameter is 2-4 cm.
The utility model discloses a double-channel full-automatic intelligent rapid mercury detector, wherein a cracking catalytic system adopts silicon nitride materials as a heat radiation source.
The double-channel full-automatic intelligent rapid mercury detector disclosed by the utility model further comprises a remote system, wherein the remote system comprises an Internet of things module and a cloud service platform, the Internet of things module is connected with the main control module, the Internet of things module is connected with the cloud service platform, and the cloud service platform is in signal connection with the mobile phone.
The dual-channel full-automatic intelligent rapid mercury detector provided by the utility model utilizes a dual-channel sequential detection mode to simultaneously detect two sample results by one-time test, so that the sample test time is greatly shortened, and the detection efficiency is improved. In addition, the whole analysis system is provided with a remote system, so that unattended monitoring and data information acquisition are facilitated, and the intelligent function of the system is improved; the double-channel full-automatic intelligent rapid mercury detector greatly increases the number of sample disks; the dual-channel full-automatic intelligent rapid mercury detector disclosed by the utility model can be used for avoiding the memory effect caused by mercury residues, expanding the linear range to 5 orders of magnitude and detecting the concentration of ultra-trace mercury; the dual-channel full-automatic intelligent rapid mercury tester disclosed by the utility model adopts a mode of combining light source monitoring feedback and a background logic algorithm, can be used for testing after being started for 10 minutes without waiting for long-time preheating operation of a light source, and improves the testing efficiency. Monitoring the light source in real time through two detectors to feed back the energy change of the light source, and performing deviation correction in real time; the silicon nitride material is innovatively adopted as a heat radiation source, the heating rate can quickly reach 700-. According to the double-channel full-automatic intelligent rapid mercury detector, each instrument has an independent identification two-dimensional code, a mobile phone APP is developed through a cloud service platform, and a user can monitor a software interface, check data and perform remote control through the APP. Specifically, the device is connected with a whole instrument main control module through an internet of things module, and then is in wireless connection with the help of an external terminal. The instrument system receives a control instruction sent by an external terminal, monitors the running state, executes corresponding operation according to the control instruction, and feeds back an operation result to the terminal instrument system. Therefore, the instrument system can be ensured to be in a normal working state at any time, and the instrument system can be conveniently and more humanized controlled by the majority of users.
Drawings
FIG. 1 is a schematic structural diagram of a dual-channel full-automatic intelligent rapid mercury detector of the present invention;
FIG. 2 is a schematic structural diagram of an automatic sample injection system;
FIG. 3 is a top view of a schematic of the structure of the sample tray;
FIG. 4 is a schematic diagram of a dual channel system;
FIG. 5 is a schematic view of the structure of the absorption cell;
fig. 6 is a schematic structural diagram of a light source drift correction system.
Detailed Description
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, the dual-channel full-automatic intelligent rapid mercury detector of the present invention comprises an automatic sample introduction system, a dual-channel system, an absorption cell system and a gas path system, wherein the gas path system and the automatic sample introduction system are connected with the dual-channel system, and are configured to input a sample boat containing a sample into the dual-channel system through the automatic sample introduction system, the absorption cell system is connected with the dual-channel system, the dual-channel system pyrolyzes mercury in the sample into elemental mercury vapor through a thermal cracking method, the elemental mercury vapor is input into the absorption cell system under the action of the gas path system, and the absorption cell system is configured to detect absorbance of a light intensity difference effect caused by mercury elemental vapor to a mercury special light source emission characteristic spectral line in the absorption cell.
The utility model discloses a double-channel full-automatic intelligent rapid mercury detector, wherein a double-channel system comprises a first channel and a second channel which are parallel, each channel comprises a cracking catalytic system and a gold amalgamation system connected with the cracking catalytic system, the cracking catalytic system of each channel is connected with an automatic sampling system and a gas circuit system, the gold amalgamation system of each channel is connected with an absorption cell system, the cracking catalytic system is used for heating a solid or liquid sample to generate mercury elementary substance vapor, the gold amalgamation system is used for enriching the mercury elementary substance vapor, the heating gold amalgamation system releases the mercury elementary substance vapor, and carrier gas of a carrier gas system is used for inputting the released mercury elementary substance vapor into the absorption cell system.
The utility model discloses a double-channel full-automatic intelligent rapid mercury detector, wherein an automatic sample introduction system comprises a driving support device 10 and two sets of pushing sample introduction devices 20 arranged on the driving support device, the two sets of pushing sample introduction devices are arranged in a stacked mode and are respectively correspondingly matched with a first channel and a second channel, each pushing sample introduction device comprises a sample disc 21, a longitudinal air cylinder 22 and a transverse two-stage air cylinder 23, a plurality of round holes 26 used for placing sample boats 30 are formed in the sample discs, the sample boats containing samples are inserted into the round holes, the central shaft of each sample disc is connected with the output shaft of a motor so that the motor drives the sample discs to rotate, the longitudinal air cylinders are arranged below the sample discs and used for pushing the sample boats to be separated from the sample discs to move upwards, and the transverse two-stage air cylinders are arranged above the sample discs and used for transversely pushing the sample boats to enter the first channel or the second channel.
The front end of the piston rod of the transverse double-stage cylinder 23 is provided with a fork taking frame 28 for forking and fixing the sample boat.
The utility model discloses a double-channel full-automatic intelligent rapid mercury detector, wherein an absorption cell system comprises a light source, an absorption cell and a buffer cavity, the absorption cell is made of quartz materials, the absorption cell comprises a long cell, a middle cell and a short cell which are sequentially connected, the long cell and the middle cell are connected through a first buffer cavity, and the middle cell and the short cell are connected through a second buffer cavity.
The utility model relates to a double-channel full-automatic intelligent rapid mercury detector, wherein a gas circuit system comprises a purified air/oxygen gas source and an argon gas source, the purified air/oxygen gas source and the argon gas source are respectively connected with a cracking catalytic system of each channel through pipelines, electromagnetic valves are arranged on the pipelines, the double-channel full-automatic intelligent rapid mercury detector also comprises a tail gas purification system, the tail gas purification system is respectively connected with a first channel, a second channel and an absorption cell through three branch pipelines, and the three branch pipelines are provided with the electromagnetic valves, so that tail gas from gold amalgam systems of the first channel and the second channel is controlled by the electromagnetic valves to not enter the absorption cell system and is respectively and directly discharged into the tail gas purification system in a sample cracking process; when the sample cracking is completed, the released mercury vapor is captured by the gold amalgamation system, the carrier gas is switched from pure oxygen or purified air to argon, and the argon is used as the carrier gas to load the mercury simple substance vapor generated by the gold amalgamation system for pyrolysis into the absorption cell system for detection.
The utility model discloses a double-channel full-automatic intelligent rapid mercury detector, which further comprises a controller, wherein the controller is connected with a detector, a motor and an electromagnetic valve.
The utility model discloses a double-channel full-automatic intelligent rapid mercury detector, which further comprises a light source drift correction system, wherein the light source drift correction system comprises a feedback controller, the light source and an absorption cell are arranged between two detectors, the two detectors are used for monitoring the light source in real time and feeding back the energy change of the light source to the feedback controller, and the feedback controller carries out original light intensity confirmation again before reading absorbance so as to ensure that the absorbed light intensity is calculated based on the current original light intensity.
The utility model relates to a double-channel full-automatic intelligent rapid mercury detector, wherein the lengths of a long pool, a middle pool and a short pool are respectively 12-16cm, 6-8cm and 0.5-2cm, the inner diameter is 1-3mm, a first buffer cavity and a second buffer cavity are cylindrical, the lengths are respectively 4-6cm and 2-4cm, and the inner diameter is 2-4 cm.
The utility model discloses a double-channel full-automatic intelligent rapid mercury detector, wherein a cracking catalytic system adopts silicon nitride materials as a heat radiation source.
In the sample cracking process, pure oxygen or purified mercury-free air is used as carrier gas for full oxidative decomposition, and tail gas from the gold amalgam system of the two channels is controlled by an electromagnetic valve and does not enter an absorption tank system, and is respectively and directly discharged into a tail gas purification system; when the sample is completely cracked, the released mercury vapor is captured by the gold amalgam system, the gas circuit switching is carried out by the carrier gas system in cooperation with the electromagnetic valve, the carrier gas is switched from pure oxygen or purified air to argon, meanwhile, tail gas discharged from the gold amalgam system is switched into the absorption pool system from an emptying state, and the argon is used as the carrier gas to load mercury simple substance vapor generated by the pyrolytic gold amalgam system into the absorption pool system for detection. At present, similar instruments on the market all use oxygen as carrier gas, in order to avoid the combination of the mercury vapor release process and the oxygen as oxidized mercury, a carrier gas switching mode is adopted, and argon is adopted during detection so as to improve the detection stability and reliability.
The double-channel full-automatic intelligent rapid mercury detector disclosed by the utility model further comprises a remote system, wherein the remote system comprises an Internet of things module and a cloud service platform, the Internet of things module is connected with the main control module, the Internet of things module is connected with the cloud service platform, and the cloud service platform is in signal connection with the mobile phone.
The utility model discloses a double-channel full-automatic intelligent rapid mercury detector, which further comprises a gas circuit system and a tail gas purification system.
The gas circuit system comprises a purified air/oxygen gas source and an argon gas source, and the purified air/oxygen gas source and the argon gas source are respectively connected with the cracking catalytic system of each channel through pipelines.
The tail gas purification system is connected with the gold amalgamation system of each channel.
The working principle is as follows: under the oxygen atmosphere, the sample boat containing solid or liquid samples sequentially enters the first channel and the second channel in sequence by the automatic sample introduction system to be measured simultaneously. The solid or liquid sample is heated and cracked by the cracking and catalyzing system, the decomposed products are brought into the catalyst part by oxygen, the decomposed products of carbon, nitrogen, sulfur oxides, halogen compounds and the like are captured by the catalytic material of the cracking and catalyzing system, and the mercury gaseous compound is further catalytically reduced into mercury elementary vapor. The mercury elemental vapor is carried into the amalgamation tube for enrichment. Other gases such as water vapor and the like are discharged from the exhaust line. Then, the gas path system switches the carrier gas from oxygen or purified air to argon. At the moment, the exhaust gas valves of the first channel and the second channel are switched into the absorption cell system from the emptying state in sequence, the mercury elementary vapor released by the sequential heating amalgamation device is introduced into the absorption cell, the 253.65nm wavelength radiation is absorbed under the characteristic light source, the light intensity attenuation phenomenon sequentially generated by the sequential absorption of the two channels is respectively converted into the absorbance by the photoelectric signals of the detection system, and the exhaust gas is discharged through the exhaust gas purification system without pollution. According to Lambert beer's law, the mercury content is calculated by an external standard method. And a double-channel sequential detection mode is adopted, and two sample results are simultaneously measured by one-time test, so that the sample test time is greatly shortened, and the detection efficiency is improved. In addition, the whole analysis system carries a remote system, unattended monitoring and data information acquisition are facilitated, and the intelligent function of the system is improved.
a. An automatic sample introduction system:
the utility model innovatively adopts a longitudinal vertical and ladder-type stacked disk multi-circle mode to realize double-channel sample injection and greatly increases the number of sample disks.
b. A two-channel system:
comprises a cracking catalytic system, a gold amalgamation system and a gas circuit switching system. And the double-channel system also adopts a longitudinal vertical and ladder type overlapping mode by matching with an automatic sampling system, and sequentially drives sampling tests. By switching the switching valve, oxygen or purified air is used as carrier gas in the catalytic cracking and leveling operation stages, and tail gas is exhausted. When the process is finished, the carrier gas is switched to argon: firstly, the tail gas of a first channel is introduced into an absorption pool system through evacuation, a gold amalgam system of the first channel is heated to release mercury simple substance vapor, and the mercury simple substance vapor is carried into the absorption pool by argon gas carrier gas for detection; and then, the tail gas of the first channel is switched to an emptying state, the tail gas of the second channel is switched to be connected into the absorption cell system from the emptying state, and the gold amalgam system of the second channel is heated to release mercury simple substance vapor, and the mercury simple substance vapor is carried into the absorption cell by argon gas carrier gas for detection. The switching is repeated, and the dual-channel sequential measurement is realized. The detection efficiency is greatly improved.
c. An absorption tank system:
the quartz material is adopted, the three absorption pool mode is designed characteristically, maintenance is free, cleaning is not needed, and the quartz absorption pool type absorption pool has strong applicability. The same light source, the single flow path and different optical paths realize that one sample detection simultaneously generates three different absorbances. L1, L2 and L3 are respectively a long pool, a middle pool and a short pool of a cylindrical absorption pool, the lengths are respectively 12-16cm, 6-8cm and 0.5-2cm, and the inner diameter is 1-3 mm. Wherein L4 and L5 are cylindrical buffer cavities with lengths of 4-6cm and 2-4cm respectively and inner diameters of 2-4cm, so that the memory effect caused by mercury residues is avoided, the linear range is expanded to 5 orders of magnitude, and the ultra-trace mercury concentration can be detected.
d. And (3) light source drift correction: by adopting a mode of combining light source monitoring feedback and a background logic algorithm, the test can be carried out after 10 minutes of starting without waiting for long-time preheating operation of the light source, and the test efficiency is improved. The light source is monitored in real time through the two detectors to feed back the energy change of the light source, and deviation correction is carried out in real time. Background logic algorithm is realized through upper computer software, and the original light intensity I is performed again before the absorbance is read through testing0Confirmation to ensure that the absorbed intensity I is based on the current original intensity I0The calculation is performed.
e. A heating cracking mode: the silicon nitride material is innovatively adopted as a heat radiation source, the heating rate can quickly reach 700-.
f. Remote system: based on the internet of things module, each instrument has an independent identification two-dimensional code, and through a mobile phone APP developed by a cloud service platform, a user can monitor a software interface, check data and perform remote control through the APP. Specifically, the device is connected with a whole instrument main control module through an internet of things module, and then is in wireless connection with the help of an external terminal. The instrument system receives a control instruction sent by an external terminal, monitors the running state, executes corresponding operation according to the control instruction, and feeds back an operation result to the terminal instrument system. Therefore, the instrument system can be ensured to be in a normal working state at any time, and the instrument system can be conveniently and more humanized controlled by the majority of users.
The best using state of the double-channel full-automatic intelligent rapid mercury detector is as follows:
a. the cracking temperature is 650 ℃, the catalytic temperature is 450 ℃, the homogenization trapping temperature is 100 ℃, the homogenization release temperature is 300 ℃, the temperature of an absorption tank is 120 ℃, and the carrier gas flow is 180 mL/min;
b. starting the machine and preheating for 10min, namely opening a built-in standard curve, and then carrying out test operation;
c. before testing, the sample boat and the instrument system need to be subjected to an empty burning test, and when the absorbance is 0.002Abs, sample adding and detection can be carried out;
d. if the sample amount is less, a single-channel mode can be selected for detection;
e. in the batch of samples, a double-channel mode is recommended to be selected, the one-time test time is about 3-4min, two sample results are obtained simultaneously, the average one-sample test time is 1.5-2min, and the test efficiency is greatly improved;
f. when the absorbance is significantly decreased or the stability is significantly deteriorated, the replacement of the catalytic tube and the trap tube is considered.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and amendments can be made without departing from the principle of the present invention, and these modifications and amendments should also be considered as the protection scope of the present invention.
Claims (10)
1. The utility model provides a full-automatic intelligent quick mercury detector of binary channels, a serial communication port, including autoinjection system, binary channels system, absorption cell system, gas circuit system, autoinjection system and binary channels system connection for in the sample boat that will contain the sample passes through autoinjection system and inputs the binary channels system, absorption cell system and binary channels system connection, the binary channels system is through the mercury pyrolysis one-tenth mercury simple substance vapour in the thermal cracking mode with the sample, mercury simple substance vapour input absorption cell system under the gas circuit system effect, absorption cell system is used for detecting the absorbance that mercury simple substance vapour arouses the light intensity difference effect to mercury special light source emission characteristic spectral line in the absorption cell.
2. The dual-channel full-automatic intelligent rapid mercury detector as claimed in claim 1, wherein the dual-channel system comprises a first channel and a second channel which are parallel, each channel comprises a cracking catalytic system and a gold amalgamation system connected with the cracking catalytic system, the cracking catalytic system of each channel is connected with the automatic sampling system and the gas circuit system, the gold amalgamation system of each channel is connected with the absorption cell system, the cracking catalytic system is used for heating a solid or liquid sample to generate mercury elemental vapor, the gold amalgamation system is used for enriching the mercury elemental vapor, the heating gold amalgamation system releases the mercury elemental vapor, and a carrier gas of the carrier gas system is used for inputting the released mercury elemental vapor into the absorption cell system.
3. The dual-channel full-automatic intelligent rapid mercury determinator according to claim 2, wherein the automatic sample introduction system comprises a driving support device and two sets of pushing sample introduction devices arranged on the driving support device, the two sets of pushing sample introduction devices are arranged in a stacked manner and are respectively matched with the first channel and the second channel correspondingly, the sample pushing and feeding device comprises a sample disc, a longitudinal cylinder and a transverse double-stage cylinder, wherein the sample disc is provided with a plurality of round holes for placing sample boats, the sample boats for placing samples are inserted into the round holes, the center shaft of the sample disc is connected with the output shaft of a motor so that the motor drives the sample disc to rotate, the longitudinal cylinder is arranged below the sample disc, the horizontal double-stage cylinder is arranged above the sample plate and used for horizontally pushing the sample boat to enter the first channel or the second channel.
4. The dual-channel full-automatic intelligent rapid mercury detector according to claim 3, wherein the absorption cell system comprises a light source, an absorption cell, a buffer chamber and a detector, the absorption cell is made of quartz, the absorption cell comprises a long cell, a middle cell and a short cell which are sequentially connected, the long cell and the middle cell are connected through the first buffer chamber, and the middle cell and the short cell are connected through the second buffer chamber.
5. The dual-channel full-automatic intelligent rapid mercury detector as claimed in claim 4, wherein the gas path system comprises a purified air/oxygen gas source and an argon gas source, the purified air/oxygen gas source and the argon gas source are respectively connected with the cracking catalytic system of each channel through a pipeline, the pipeline is provided with a solenoid valve, the dual-channel full-automatic intelligent rapid mercury detector further comprises a tail gas purification system, the tail gas purification system is respectively connected with the first channel, the second channel and the absorption cell through three branch pipelines, and the three branch pipelines are provided with solenoid valves, so that in the sample cracking process, tail gases coming out of the gold amalgamation systems of the first channel and the second channel are controlled by the solenoid valves to be prevented from entering the absorption cell system and are respectively and directly discharged into the tail gas purification system; when the sample cracking is completed, the released mercury vapor is captured by the gold amalgamation system, the carrier gas is switched from pure oxygen or purified air to argon, and the argon is used as the carrier gas to load the mercury simple substance vapor generated by the gold amalgamation system for pyrolysis into the absorption cell system for detection.
6. The dual-channel full-automatic intelligent rapid mercury determinator according to claim 5, further comprising a controller, wherein the controller is connected with the detector, the motor and the electromagnetic valve.
7. The dual-channel full-automatic intelligent rapid mercury porosimeter according to claim 6, further comprising a light source drift correction system, wherein the light source drift correction system comprises a feedback controller, the light source and the absorption cell are disposed between two detectors, the two detectors are used for monitoring the light source in real time and feeding back the energy change of the light source to the feedback controller, and the feedback controller performs the original light intensity confirmation again before reading the absorbance, so as to ensure that the light intensity after absorption is calculated based on the current original light intensity.
8. The dual-channel full-automatic intelligent rapid mercury determinator of claim 7, wherein the long tank, the middle tank and the short tank are respectively 12-16cm, 6-8cm and 0.5-2cm in length, the inner diameter is 1-3mm, the first buffer cavity and the second buffer cavity are cylindrical, the lengths are respectively 4-6cm and 2-4cm, and the inner diameter is 2-4 cm.
9. The dual-channel full-automatic intelligent rapid mercury porosimeter according to claim 8, wherein the cracking catalyst system uses silicon nitride as a heat radiation source.
10. The dual-channel full-automatic intelligent rapid mercury detector as claimed in claim 9, further comprising a remote system, wherein the remote system comprises an internet of things module and a cloud service platform, the internet of things module is connected with the main control module, the internet of things module is connected with the cloud service platform, and the cloud service platform is in signal connection with a mobile phone.
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