CN105738509B - A kind of alarm of ammonia multiple spot monitoring and switching system based on chromatography - Google Patents
A kind of alarm of ammonia multiple spot monitoring and switching system based on chromatography Download PDFInfo
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- CN105738509B CN105738509B CN201610086272.7A CN201610086272A CN105738509B CN 105738509 B CN105738509 B CN 105738509B CN 201610086272 A CN201610086272 A CN 201610086272A CN 105738509 B CN105738509 B CN 105738509B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/62—Detectors specially adapted therefor
- G01N30/64—Electrical detectors
- G01N30/66—Thermal conductivity detectors
Abstract
The invention discloses a kind of ammonia monitoring, alarming based on chromatography and switching system and method, including the first monitoring point air inlet pipe, sampling air pump, six-plane valve, chromatographic column, thermal conductivity detector (TCD), monitoring alarm platform and purifier switching device；The monitoring alarm platform is connected with purifier switching device, the first magnetic valve, sampling air pump and six-plane valve circuit.The present invention can be achieved such as ammonia tank field or purifier and export the ammonia detection of multiple monitoring points and alarm, once occurring ammonia leakage can be alarmed to remind timely disposal in the very first time, the security of operation be improved, while effectively prevent problem of environmental pollution；Flexible selection and switching a little is can be sampled simultaneously.Further, purifier switching device can be also given by monitoring alarm platform output switching signal, the automatic switchover of purifier is carried out, the effect and efficiency of purifying is largely improved, with higher application and dissemination.
Description
The application is entitled：A kind of ammonia monitoring, alarming based on chromatography and switching system and method, application number
For：2015100051440, the applying date is the divisional application of the patent of invention on January 6th, 2015.
Technical field
The present invention relates to a kind of gas detection alarm field, and in particular to a kind of ammonia monitoring, alarming and switching system and its
Corresponding monitoring, alarming and switching method.
Background technology
It is typically the silication magnesium alloy under liquefied ammonia environment it is well known that be unableing to do without ammonia in silane by magnesium silicide method production technology
Silane and ammonia are generated with ammonium chloride reaction, then cryogenic separation ammonia and silane, the ammonia of residual is entered by sieve purification system
Row removing.
In whole production process, there is liquid ammonia storage tank, silane reaction waste residue tank, ammonia tank field etc., including defeated ammonia pipeline and
Including valve etc., there is the presence of ammonia in each production link.Ammonia is once controlled bad or leaked, and not only drops silane
Product quality, is also easy to generation environment pollution, great potential safety hazard is brought to produced on-site staff.
Therefore, urgent need is a kind of on the one hand can improve silane product quality, separately with the technology and device of effective detection ammonia
On the one hand the generation that liquefied ammonia can be controlled to reveal, to ensure the work safety of production scene personnel, it is to avoid environmental pollution.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention provides a kind of ammonia based on chromatography
Gas monitoring, alarming and switching system, while providing a kind of for the ammonia monitoring, alarming and switching system based on chromatography
Method, ammonia monitoring, the report of monitoring point such as ammonia tank field or purifier outlet can be realized by the system and its corresponding method
It is alert, and the switching even switching of purifier a little is can be sampled, operational security is improved, environmental pollution is effectively prevent.
Technical scheme：In order to solve the above technical problems, the ammonia monitoring, alarming based on chromatography that provides of the present invention with
Switching system, including the first monitoring point air inlet pipe, sampling air pump, six-plane valve, chromatographic column, thermal conductivity detector (TCD), monitoring alarm
Platform and purifier switching device；Six ports of the six-plane valve number in order clockwise：One~port of port
Six；Quantity tube is connected between the port one and port four of the six-plane valve；
First monitoring point air inlet pipe is connected by the first magnetic valve with sampling air pump；It is described sampling air pump output with
The port six of six-plane valve is connected；The port two of the six-plane valve is connected with carrier gas pipe；The six-plane valve it is logical
Chromatographic column and thermal conductivity detector (TCD) are sequentially connected in series between mouth three and monitoring alarm platform；
The monitoring alarm platform and purifier switching device, the first magnetic valve, sampling air pump and six-plane valve electricity
Road is connected.
It is preferred that, the second monitoring point air inlet pipe is still further comprised, second monitoring point air inlet pipe passes through the second electromagnetism
Valve is connected with sampling air pump；Second magnetic valve is connected with the monitoring alarm platform circuitry.
It is further preferred that also include more than two monitoring point air inlet pipe in addition to the first monitoring point air inlet pipe, each monitoring
Point air inlet pipe is connected by its each self-corresponding magnetic valve with sampling air pump；Each magnetic valve and monitoring alarm platform electricity
Road is connected.
It is preferred that, first monitoring point air inlet pipe is the first monitoring point air inlet pipe exported located at purifier..
It is preferred that, first monitoring point air inlet pipe is the first monitoring point air inlet pipe exported located at purifier, described the
Two monitoring point air inlet pipe are the second monitoring point air inlet pipe located at ammonia tank field.
It is preferred that, the filler of the chromatographic column is GDX403.
It is preferred that, the monitoring alarm platform include the first controller and be connected with the first controller memory module,
Analog-digital converter, alarm module, power module；The thermal conductivity detector (TCD) 7 is connected by analog-digital converter with the first controller.
It is preferred that, the purifier switching device includes mixed gas entrance, second controller and purifying more than two
Device；The entrance of every group of purifier is connected by each self-corresponding magnetic valve with mixed gas entrance, corresponding with each purifier entrance
Magnetic valve be connected with second controller；The purifier switching system is connected by second controller and monitoring alarm platform
Connect.
Meanwhile, in order to solve the above technical problems, provided by the present invention for the ammonia based on chromatography of said system
Monitoring, alarming and switching method, comprise the following steps：
The step of monitoring point is set：The corresponding each monitoring point air inlet pipe in each monitoring point is located at position to be monitored, wherein one
Individual monitoring point air inlet pipe is exported located at purifier；
The step of arrange parameter：The switch time, the switching time of each monitoring point, preset alarm threshold of six-plane valve are set
Value；
The step of switching monitored monitoring point intake channel；
The step of gathering sample gas；
The step of chromatography and detection；
The step of alarm is with switching：The electric signal that the step of by chromatography and detection exports is after analog-to-digital conversion, with quilt
The corresponding preset alarm threshold value of purpose monitoring point is compared, and the monitoring point is carried out if being equal to or more than the preset alarm threshold value
Corresponding alarm, now if the monitoring point of current monitor is located at the first monitoring point of purifier outlet, while exporting purifier
Switching signal；
The step of purifier switches：The purifier switching signal that the step of according to alarm with switching exports, carries out purifier
Automatic switchover.
It is preferred that, in the ammonia monitoring, alarming based on chromatography and switching method：
In the ammonia monitoring, alarming based on chromatography and switching system：Including two monitoring point air inlet pipe, difference
For the first monitoring point air inlet pipe and the second monitoring point air inlet pipe；The purifier switching device includes two groups of purifiers, is respectively
First purifier and the second purifier；The filler of chromatographic column is GDX403；
In the step of setting monitoring point：First monitoring point air inlet pipe is exported located at purifier, the second monitoring is clicked through
Tracheae is located at ammonia tank field；
In the step of arrange parameter：The preset alarm threshold value includes the corresponding with the first monitoring point first default threshold
Value, the second predetermined threshold value corresponding with the second monitoring point, first predetermined threshold value are 50 × 10-6Mol/mol, described second is pre-
If threshold value is 1 × 10-3mol/mol。
Beneficial effect：The ammonia monitoring, alarming based on chromatography that the present invention is provided and switching system and method, are utilized
For the chromatographic column and thermal conductivity detector (TCD) of ammonia, with reference to monitoring alarm platform, such as ammonia tank field or purifier outlet can be achieved
The ammonia detection and alarm of multiple monitoring points, enter once occurring ammonia leakage and can carry out warning reminding staff in the very first time
Row disposal, improves the security of operation, while effectively prevent the problem of environmental pollution that ammonia leakage is brought；It can carry out simultaneously
The flexible selection and switching of sampled point.
Further, when carrying out the ammonia detection and alarm of purifier outlet correspondence monitoring point, once detecting currently makes
When purifier fails and alarmed, purifier switching device can be given by monitoring alarm platform output switching signal, is carried out pure
Change the automatic switchover of device, both realized that the purifier activated came into operation, the purifier of inactivation carries out the automatic of activating and regenerating and cut
Change jobs pattern, while having saved cycle and the cost of hand inspection, largely improves the effect and efficiency of purifying,
And the purified material in purifier can be economized on resources with Reusability, with higher application and dissemination.
Brief description of the drawings
Fig. 1 is the structural representation (six-plane of ammonia monitoring, alarming and switching system of the present invention based on chromatography
Valve is in OFF state)；
Fig. 2 is the structural representation (six-plane of ammonia monitoring, alarming and switching system of the present invention based on chromatography
Valve is in ON states)；
Fig. 3 is that the structure of ammonia monitoring, alarming and monitoring alarm platform in switching system of the invention based on chromatography is shown
It is intended to；
Fig. 4 is ammonia monitoring, alarming of the present invention based on chromatography and the structure of purifier switching device in switching system
Schematic diagram.
Embodiment
Structural representation such as Fig. 1 (six-planes of ammonia monitoring, alarming and switching system of the present invention based on chromatography
Valve is in OFF state) and Fig. 2 (six-plane valve be in ON states) it is shown, the structural representation of monitoring alarm platform in system
As shown in figure 3, the structural representation of purifier switching device is as shown in figure 4, with reference to the accompanying drawings and examples to this in system
Invention is further described.
System embodiment 1：As depicted in figs. 1 and 2, the monitoring of the ammonia based on chromatography that the system embodiment 1 is provided
Alarm and switching system, including the first monitoring point air inlet pipe, the second monitoring point air inlet pipe, sampling air pump 3, six-plane valve, color
Compose post 6, thermal conductivity detector (TCD) 7, monitoring alarm platform and purifier switching device；Six equal up times of port of the six-plane valve
Pin numbers in order：One~port of port six；Quantity tube 5 is connected between the port one and port four of the six-plane valve.
First monitoring point air inlet pipe is exported located at purifier, and second monitoring point air inlet pipe is located at ammonia tank field.
First monitoring point air inlet pipe is connected by the first magnetic valve 1 with sampling air pump；Second monitoring point air inlet pipe passes through
Two magnetic valves 2 are connected with sampling air pump.Specifically in the system embodiment 1, first monitoring point air inlet pipe, the second monitoring
Point air inlet pipe is connected by a triple valve (not shown) with sampling air pump；First monitoring point air inlet pipe and Pneumatic three-way valve
Between be provided with the first magnetic valve 1, between the second monitoring point air inlet pipe and Pneumatic three-way valve be provided with the second magnetic valve 2.Increase by one
The control of triple valve, can further be prevented effectively from interfering and mixing for multi-channel sampling gas.
The output of the sampling air pump is connected with the port six of six-plane valve；The port two of the six-plane valve is with carrying
Tracheae is connected, and port five is connected with evacuated tube；It is sequentially connected in series between the port three and monitoring alarm platform of the six-plane valve
Chromatographic column 6 and thermal conductivity detector (TCD)；
The monitoring alarm platform and purifier switching device, the first magnetic valve 1, the second magnetic valve 2, triple valve, sampling
Air pump 3 and the connection of six-plane valve circuit.
The filler of chromatographic column 6 described in the system embodiment 1 is GDX403.
As shown in figure 3, the monitoring alarm platform includes the first controller and the storage mould being connected with the first controller
Block, analog-digital converter, alarm module, power module；The thermal conductivity detector (TCD) 7 is connected by analog-digital converter and the first controller
Connect.
As shown in figure 4, the purifier switching device include mixed gas entrance, second controller, the first purifier and
Second purifier；The entrance of first purifier is connected by the 3rd magnetic valve 8 with mixed gas entrance, the entrance of the second purifier
Connected by the 4th magnetic valve 9 with mixed gas entrance, the 3rd magnetic valve 8 and the 4th magnetic valve 9 are connected with second controller；
The purifier switching system is connected by second controller with monitoring alarm platform.
System embodiment 2：Ammonia monitoring, alarming based on chromatography and switching system that the present embodiment is provided, including the
One monitoring point air inlet pipe, sampling air pump, six-plane valve, chromatographic column, thermal conductivity detector (TCD), monitoring alarm platform and purifier switching
Device；Six ports of the six-plane valve number in order clockwise：One~port of port six；The six-plane valve
Port one and port four between be connected to quantity tube；
First monitoring point air inlet pipe is connected by the first magnetic valve with sampling air pump；It is described sampling air pump output with
The port six of six-plane valve is connected；The port two of the six-plane valve is connected with carrier gas pipe, and port five is connected with evacuated tube；
Chromatographic column and thermal conductivity detector (TCD) are sequentially connected in series between the port three and monitoring alarm platform of the six-plane valve；
The monitoring alarm platform and purifier switching device, the first magnetic valve, sampling air pump and six-plane valve electricity
Road is connected.
The filler of the chromatographic column is GDX403.
As shown in figure 3, the monitoring alarm platform includes the first controller and the storage mould being connected with the first controller
Block, analog-digital converter, alarm module, power module；The thermal conductivity detector (TCD) 7 is connected by analog-digital converter and the first controller
Connect.
As shown in figure 4, the purifier switching device includes mixed gas entrance, second controller and more than two pure
Change device；The entrance of every group of purifier is connected by each self-corresponding magnetic valve with mixed gas entrance, each magnetic valve and the second control
Device connection processed；The purifier switching system is connected by second controller with monitoring alarm platform.
First monitoring point air inlet pipe is exported or ammonia tank field located at purifier.
System embodiment 3：Essentially identical, the something in common with any one structure in system embodiment 1, system embodiment 2
It is not repeated, except that：Including two and more than two monitoring point air inlet pipe, each monitoring point air inlet pipe by its each
Corresponding magnetic valve is connected with sampling air pump；Between each magnetic valve and sampling air pump pneumatic multiple-way valve is can configure according to practical structures
Selection for monitoring point air inlet pipe.The magnetic valve being respectively connected with monitoring point air inlet pipe is electric with the monitoring alarm platform
Road is connected.
The purifier switching device includes mixed gas entrance, second controller and purifier more than two；Every group
The entrance of purifier is connected by each self-corresponding magnetic valve with mixed gas entrance, magnetic valve corresponding with each purifier entrance
It is connected with second controller；The purifier switching system is connected by second controller with monitoring alarm platform.
Embodiment of the method 4：System embodiment 1 is preferred embodiment, by taking system embodiment 1 as an example, illustrates the side of the present invention
Method embodiment 4, and corresponding workflow of the invention and principle：
The step of monitoring point is set：Corresponding first monitoring point air inlet pipe in the first monitoring point is located at purifier first
Outlet, corresponding second monitoring point air inlet pipe in the second monitoring point is located at ammonia tank field.
The step of arrange parameter：The switch time, the switching time of monitoring point, preset alarm threshold of six-plane valve are set
Value；The preset alarm threshold value includes the first predetermined threshold value corresponding with the first monitoring point, corresponding with the second monitoring point second
Predetermined threshold value, first predetermined threshold value is 50 × 10-6Mol/mol, second predetermined threshold value is 1 × 10-3mol/mol。
Monitor the first monitoring point：
The step of switching monitored monitoring point intake channel：First magnetic valve 1 is opened by monitoring alarm platform, the is closed
Two magnetic valves 2；The port that triple valve is docked with the first magnetic valve 1 is opened, it is logical that closing triple valve is docked with the second magnetic valve 2
Mouthful；Open sampling air pump 3.
The step of gathering sample gas：
OFF state (both sampling state) is in by monitoring alarm platform courses six-plane valve, in this case, sampling
After air pump 3 starts, the sample gas that the first monitoring point air inlet pipe is collected is transported to the port six of six-plane valve, such as Fig. 1 institutes
Show, externally emptied after sequentially passing through the port one connected with port six, quantity tube 5, port four and port five；Carrier gas is logical flat through six
After the port two of face valve, the port three connected with port two, chromatographic column 6 is persistently inputted.
Then, ON states (both sample introduction states) are in by monitoring alarm platform courses six-plane valve.In this case,
The sample gas that first monitoring point air inlet pipe is collected is transported to after the port six of six-plane valve, as shown in Fig. 2 via with leading to
The ports five of the connection of mouth six are externally emptied；Port two of the carrier gas through six-plane valve is inputted, by the port connected with port two
Sample gas in one input quantity tube 5, quantity tube 5 is promoted by carrier gas sequentially passes through input chromatographic column 6 after port four and port three,
Complete the sample introduction of sample gas.
The step of chromatography and detection：Sample gas enters after chromatographic column 6 under the promotion of carrier gas, in the effect of chromatographic column
It is lower to be separated ammonia and carrier gas, the output after the component to be measured of separation further inputs thermal conductivity detector (TCD) TCD of outflow
Electric signal.
The step of alarm is with switching：It is and right by the electric signal that exports the step of chromatography and detection after analog-to-digital conversion
The preset alarm threshold value answered is compared, as equal to or more than being alarmed if preset alarm threshold value, cut while exporting purifier
Change signal；Both,
The electric signal input monitoring alarm platform that thermal conductivity detector (TCD) TCD is exported, is somebody's turn to do after being changed through analog-digital converter
The corresponding data in first monitoring point (qualitative, quantitative data).First controller of monitoring alarm platform is by the data and memory module
First predetermined threshold value of middle storage is compared, and is such as equal to or more than the first predetermined threshold value, then starts alarm module and carry out first
The corresponding alarm in monitoring point, and export purifier switching signal and give purifier switching device.
The step of purifier switches：The second controller of purifier switching device receive carried out after purifier switching signal it is pure
Change device automatic switchover, both closed it is in running order in the corresponding magnetic valve 8 of the first purifier inactivated, opened
Into the corresponding magnetic valve 9 of the second purifier that activation is stand-by, and start the first purifier progress activating and regenerating inactivated.It is real
Show the purifier activated to come into operation, the purifier of inactivation removes the automatic switchover mode of operation for carrying out activating and regenerating.
Monitor the second monitoring point：
The step of switching monitored monitoring point intake channel：First magnetic valve 1 is closed by monitoring alarm platform, the is opened
Two magnetic valves 2；Correspondence closes the port that triple valve is docked with the first magnetic valve 1, opens what triple valve was docked with the second magnetic valve 2
Port；Open sampling air pump 3.
The step of gathering sample gas：
OFF state (both sampling state) is in by monitoring alarm platform courses six-plane valve, in this case, sampling
After air pump 3 starts, the sample gas that the second monitoring point air inlet pipe is collected is transported to the port six of six-plane valve, such as Fig. 1 institutes
Show, externally emptied after sequentially passing through the port one connected with port six, quantity tube 5, port four and port five；Carrier gas is logical flat through six
After the port two of face valve, the port three connected with port two, chromatographic column 6 is persistently inputted.
Then, ON states (both sample introduction states) are in by monitoring alarm platform courses six-plane valve.In this case,
The sample gas that second monitoring point air inlet pipe is collected is transported to after the port six of six-plane valve, as shown in Fig. 2 via with leading to
The ports five of the connection of mouth six are externally emptied；Port two of the carrier gas through six-plane valve is inputted, by the port connected with port two
Sample gas in one input quantity tube 5, quantity tube 5 is promoted by carrier gas sequentially passes through input chromatographic column 6 after port four and port three,
Complete the sample introduction of sample gas.
The step of chromatography and detection：Sample gas enters after chromatographic column 6 under the promotion of carrier gas, in the effect of chromatographic column
It is lower to be separated ammonia and carrier gas, the output after the component to be measured of separation further inputs thermal conductivity detector (TCD) TCD of outflow
Electric signal.
The step of alarm is with switching：It is and right by the electric signal that exports the step of chromatography and detection after analog-to-digital conversion
The preset alarm threshold value answered is compared, and is alarmed if being equal to or more than preset alarm threshold value；Both,
The electric signal input monitoring alarm platform that thermal conductivity detector (TCD) TCD is exported, is somebody's turn to do after being changed through analog-digital converter
The corresponding data in second monitoring point (qualitative, quantitative data), the first controller of monitoring alarm platform is by the data and memory module
Second predetermined threshold value of middle storage is compared, and is such as equal to or more than the second predetermined threshold value, then starts alarm module and carry out second
The corresponding alarm in monitoring point.
Above-mentioned carrier gas can be high-pure helium or High Purity Hydrogen.Above by the monitored monitoring point air inlet of monitoring alarm platform switching
The step of path, can be arranged as required to for artificial triggering and/or according to the automatic triggering of default switching time and interval.It is above-mentioned
Each monitoring point air inlet pipe can certainly be arranged as required to the position monitored in other needs, and such as liquid ammonia storage tank area, silane are anti-
Answer waste residue tank field, defeated ammonia pipeline and valve neighbouring etc..The switch time of the six-plane valve, monitored monitoring point intake channel
Between switching time and interval, preset alarm threshold value etc. can flexibly set according to the actual requirements.
Implement row above and restriction is not constituted to the present invention, relevant staff is in the scope without departing from the technology of the present invention thought
It is interior, carried out it is various change and modifications, all fall within protection scope of the present invention.
Claims (4)
1. a kind of alarm of ammonia multiple spot monitoring and switching system based on chromatography, it is characterised in that including the first monitoring point
Air inlet pipe, the second monitoring point air inlet pipe, sampling air pump, six-plane valve, chromatographic column, thermal conductivity detector (TCD), monitoring alarm platform and
Purifier switching device；
First monitoring point air inlet pipe, the second monitoring point air inlet pipe are connected by Pneumatic three-way valve with sampling air pump；First prison
The first magnetic valve is provided between measuring point air inlet pipe and Pneumatic three-way valve, is provided between the second monitoring point air inlet pipe and Pneumatic three-way valve
Second magnetic valve；
Six ports of the six-plane valve number in order clockwise：One~port of port six；The six-plane valve
Port one and port four between be connected to quantity tube；The output of the sampling air pump is connected with the port six of six-plane valve；Institute
The port two for stating six-plane valve is connected with carrier gas pipe；Between the port three and monitoring alarm platform of the six-plane valve successively
Concatenate chromatographic column and thermal conductivity detector (TCD)；
The monitoring alarm platform and purifier switching device, the first magnetic valve, the second magnetic valve, Pneumatic three-way valve, sampling gas
Pump and the connection of six-plane valve circuit；
First monitoring point air inlet pipe is the first monitoring point air inlet pipe exported located at purifier, second monitoring point air inlet
Manage as located at the second monitoring point air inlet pipe of ammonia tank field；
The purifier switching device includes mixed gas entrance, second controller and purifier more than two；Every group of purifying
The entrance of device is connected by each self-corresponding magnetic valve with mixed gas entrance, magnetic valve corresponding with each purifier entrance with
Second controller is connected；The purifier switching system is connected by second controller with monitoring alarm platform.
2. the alarm of ammonia multiple spot monitoring and switching system according to claim 1 based on chromatography, it is characterised in that：
Also include more than one monitoring point air inlet pipe in addition to the first monitoring point air inlet pipe, the second monitoring point air inlet pipe, each monitoring is clicked through
Tracheae is connected by its each self-corresponding magnetic valve with sampling air pump；Each magnetic valve connects with the monitoring alarm platform circuitry
Connect.
3. the alarm of ammonia multiple spot monitoring and switching system according to claim 1 based on chromatography, it is characterised in that：
The filler of the chromatographic column is GDX403.
4. the alarm of ammonia multiple spot monitoring and switching system according to claim 1 based on chromatography, it is characterised in that：
The monitoring alarm platform includes the first controller and the memory module being connected with the first controller, analog-digital converter, alarm
Module, power module；The thermal conductivity detector (TCD) is connected by analog-digital converter with the first controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610086272.7A CN105738509B (en) | 2015-01-06 | 2015-01-06 | A kind of alarm of ammonia multiple spot monitoring and switching system based on chromatography |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510005144.0A CN104569203B (en) | 2015-01-06 | 2015-01-06 | A kind of ammonia monitoring, alarming based on chromatography and switched system and method |
| CN201610086272.7A CN105738509B (en) | 2015-01-06 | 2015-01-06 | A kind of alarm of ammonia multiple spot monitoring and switching system based on chromatography |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510005144.0A Division CN104569203B (en) | 2015-01-06 | 2015-01-06 | A kind of ammonia monitoring, alarming based on chromatography and switched system and method |
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| CN105738509A CN105738509A (en) | 2016-07-06 |
| CN105738509B true CN105738509B (en) | 2017-10-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1054434C (en) * | 1994-12-21 | 2000-07-12 | 齐鲁石油化工公司研究院 | Method and apparatus for analysis of ammonia contg. gas mixture |
| EP1925935A1 (en) * | 2006-11-23 | 2008-05-28 | Varian B.V. | Gas detection system and method |
| CN101561422B (en) * | 2009-04-30 | 2012-10-03 | 北京大学 | On-line monitoring system for concentration of acetylperoxide nitrate |
| CN103808820B (en) * | 2014-01-09 | 2016-05-11 | 中国人民解放军海军医学研究所 | A kind of Freon gas detection alarm device and detection method thereof |
| CN104090077B (en) * | 2014-07-16 | 2015-09-02 | 中冶南方工程技术有限公司 | The hyperchannel circulating sampling gas analysis system of a kind of tape channel self-checking function and control method |
| CN204346991U (en) * | 2015-01-06 | 2015-05-20 | 南京特种气体厂有限公司 | A kind of ammonia monitoring, alarming based on stratographic analysis and switched system |
| CN104569203B (en) * | 2015-01-06 | 2016-06-29 | 南京特种气体厂有限公司 | A kind of ammonia monitoring, alarming based on chromatography and switched system and method |
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