CN210604522U - Gas composition analyzer in ammonia synthesis - Google Patents
Gas composition analyzer in ammonia synthesis Download PDFInfo
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- CN210604522U CN210604522U CN201920942829.1U CN201920942829U CN210604522U CN 210604522 U CN210604522 U CN 210604522U CN 201920942829 U CN201920942829 U CN 201920942829U CN 210604522 U CN210604522 U CN 210604522U
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Abstract
The utility model discloses a gas composition analyzer in ammonia synthesis. Comprises a sample inlet pipeline, a sample outlet pipeline, a first analysis channel and a second analysis channel; the first analysis channel comprises: the system comprises a first ten-way valve connected with a sample introduction pipeline and a six-way valve connected with the first ten-way valve; the first ten-way valve is provided with a first quantitative ring, a first carrier gas inlet, a first auxiliary carrier gas inlet, a first carrier gas outlet and a Chromosorb103 chromatographic column, and the six-way valve is provided with a first MolSieve chromatographic column and a first TCD detector; the second analysis channel comprises: the thirty-third valve is connected with the first ten-way valve and the sample outlet pipeline; and the thirty-third valve is provided with a second quantitative ring, a second carrier gas inlet, a second auxiliary carrier gas inlet, a second carrier gas outlet, a Porapak N chromatographic column, a second MolSieve chromatographic column and a second TCD detector. The utility model discloses the analysis appearance once advances the appearance through the binary channels design, can realize the detection and analysis of all gaseous in the ammonia synthesis to can effectual protection chromatographic column, prolong the life-span of chromatographic column.
Description
Technical Field
The utility model relates to a gas composition analyzer in ammonia synthesis belongs to analysis and detection technical field.
Background
In the ammonia synthesis process, the gas components and content in the synthesis process are generally required to be analyzed, on one hand, the control of the synthesis process, especially the content of hydrogen, is required to be realized, the reaction requirement is ensured, and the waste of hydrogen is also avoided; on the other hand, the exhaust gas to be discharged needs to be detected so as to establish the next exhaust gas treatment scheme. But due to CO generated during the reaction2The existing detection and analysis instruments cannot simultaneously analyze and detect all gases in the reaction process.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a gas composition analysis in being used for realizing ammonia synthesis. The utility model discloses an analysis appearance once advances the kind through the binary channels design, can realize the detection and analysis of all gaseous in the ammonia synthesis to can effectual protection chromatographic column, prolong the life-span of chromatographic column.
The first purpose of the utility model is to provide a gas composition analyzer in ammonia synthesis, which comprises a sample introduction pipeline, a sample outlet pipeline, a first analysis channel and a second analysis channel;
the first analysis channel comprises:
the first selector valve is connected with the outlet of the sample feeding pipeline, and is at least a ten-way valve which can switch the state of an internal passage;
the second selector valve is connected with the first selector valve, is at least a six-way valve and can switch the state of the internal passage of the second selector valve;
the two ends of the first quantitative ring are respectively connected with the first selector valve;
a first carrier gas inlet connected to said first selector valve;
a first auxiliary carrier gas inlet connected to said first selector valve;
a first carrier gas outlet connected to the first selector valve;
the chromatographic column of Chromosorb103, both ends of the chromatographic column of Chromosorb103 connect with said first selector valve separately;
the two ends of the first MolSieve chromatographic column are connected with the second selection valve;
a first TCD detector connected to the second selection valve;
the second analysis channel comprises:
the third selector valve is connected with the first selector valve and the inlet of the sample outlet pipeline, and the third selector valve is at least a ten-way valve and can switch the state of the internal passage of the third selector valve;
the two ends of the second quantitative ring are respectively connected with the third selector valve;
a second carrier gas inlet connected to said third selection valve;
a second secondary carrier gas inlet connected to said third selector valve;
a second carrier gas outlet connected to said third selection valve;
the two ends of the Porapak N chromatographic column are respectively connected with the third selection valve;
the two ends of the second MolSieve chromatographic column are connected with the third selection valve;
a second TCD detector connected to the third selection valve.
Further, the first selector valve can be switched between an on state and an off state;
the on state of the first selector valve is as follows: the first carrier gas inlet is communicated with the first quantitative ring, the Chromosorb103 chromatographic column and the second selection valve in sequence, and the first auxiliary carrier gas inlet is communicated with the first carrier gas outlet;
the off state of the first selector valve is as follows: the sample introduction pipeline is communicated with the first quantitative ring, the first carrier gas inlet is sequentially communicated with the Chromosorb103 chromatographic column and the first carrier gas outlet, and the first auxiliary carrier gas inlet is communicated with the second selection valve.
Further, the second selector valve can be switched between an on state and an off state;
the on state of the second selector valve is as follows: the first selector valve is directly communicated with the first TCD detector;
the off state of the second selector valve is as follows: the first selection valve is communicated with the first MolSieve chromatographic column and the first TCD detector in sequence.
Further, the third selector valve can be switched between an on state and an off state;
the on state of the third selector valve is as follows: the second carrier gas inlet is communicated with a second quantitative ring, a Porapak N chromatographic column, a second MolSieve chromatographic column and a second TCD detector in sequence, and the second auxiliary carrier gas inlet is communicated with the second carrier gas outlet;
the off state of the third selector valve is as follows: the second ration ring with the pipeline that produces a appearance communicate with each other, second carrier gas entry be linked together with Porapak N chromatographic column, second carrier gas export in proper order, the supplementary carrier gas entry of second is linked together with second MolSieve chromatographic column, second TCD detector in proper order.
Further, the first selector valve is a ten-way valve, the second selector valve is a six-way valve, the third selector valve is a ten-way valve, the ten-way valve comprises ten ports and a rotatable air passage, and the six-way valve comprises six ports and a rotatable air passage.
Furthermore, a first needle valve and a second needle valve are respectively arranged on the first carrier gas outlet and the second carrier gas outlet.
Furthermore, a third needle valve is arranged on the second selector valve, two ends of the third needle valve are respectively connected with the second selector valve, and when the second selector valve is set to be in an on state, the third needle valve is arranged between the first selector valve and the first TCD detector.
Further, the capacity of the first quantitative ring and the second quantitative ring is 1 mL.
Further, the gas introduced into the first carrier gas inlet and the first auxiliary carrier gas inlet is helium.
Further, the gas introduced into the second carrier gas inlet and the second auxiliary carrier gas inlet is nitrogen or helium.
The utility model has the advantages that: the utility model discloses an analysis appearance once advances the kind through the binary channels design, can realize the detection and analysis of all gaseous in the ammonia synthesis to can effectual protection chromatographic column, prolong the life-span of chromatographic column.
Drawings
FIG. 1 is a schematic structural diagram of a first selector valve, a second selector valve and a third selector valve of a gas component analyzer in ammonia synthesis of the utility model, all of which are in an on state;
FIG. 2 is a schematic structural diagram of a first selector valve, a second selector valve and a third selector valve of a gas composition analyzer in ammonia synthesis according to the present invention in an off state;
the reference numbers in the figures illustrate: 1. a first analysis channel, 101, a first selection valve, 102, a second selection valve, 103, a first dosing ring, 104, a first carrier gas inlet, 105, a first auxiliary carrier gas inlet, 106, a first carrier gas outlet, 107, a Chromosorb103 column, 108, a first MolSieve column, 109, a first TCD detector, 110, a first needle valve, 111, a third needle valve, 2, a second analysis channel, 201, a third selection valve, 202, a second dosing ring, 203, a second carrier gas inlet, 204, a second auxiliary carrier gas inlet, 205, a second carrier gas outlet, 206, a Porapak N column, 207, a second MolSieve column, 208, a second TCD detector, 209, a second needle valve, 3, a sample inlet line, 4, a sample outlet line.
Detailed Description
The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
As shown in fig. 1 and fig. 2, the gas composition analyzer for ammonia synthesis of the present invention comprises a sample inlet pipeline 3, a sample outlet pipeline 4, a first analysis channel 1 and a second analysis channel 2;
the first analysis channel 1 comprises:
the first selector valve 101, the first selector valve 101 links with the exit of the sample introduction pipeline 3, the first selector valve 101 is a ten-way valve at least, can switch its internal access state;
a second selector valve 102, the second selector valve 102 is connected with the first selector valve 101, the second selector valve 102 is at least a six-way valve and can switch the internal passage state thereof;
a first quantitative ring 103, wherein two ends of the first quantitative ring 103 are respectively connected with the first selector valve 101;
a first carrier gas inlet 104, the first carrier gas inlet 104 being connected to the first selector valve 101;
a first auxiliary carrier gas inlet 105, the first auxiliary carrier gas inlet 105 being connected to the first selector valve 101;
a first carrier gas outlet 106, the first carrier gas outlet 106 being connected to the first selector valve 101;
a Chromosorb103 chromatographic column 107, wherein two ends of the Chromosorb103 chromatographic column 107 are respectively connected with the first selector valve 101;
a first MolSieve chromatographic column 108, wherein both ends of the first MolSieve chromatographic column 108 are connected with the second selection valve 102;
a first TCD detector 109, the first TCD detector 109 being connected to the second selector valve 102;
the second analysis channel 2 comprises:
a third selector valve 201, the third selector valve 201 is connected with the first selector valve 101 and connected with the inlet of the sample outlet pipeline 4, the third selector valve 201 is at least a ten-way valve and can switch the internal passage state;
a second quantitative ring 202, both ends of the second quantitative ring 202 being connected to the third selector valve 201, respectively;
a second carrier gas inlet 203, the second carrier gas inlet 203 being connected to the third selector valve 201;
a second auxiliary carrier gas inlet 204, the second auxiliary carrier gas inlet 204 being connected to the third selection valve 201;
a second carrier gas outlet 205, the second carrier gas outlet 205 being connected to the third selection valve 201;
the Porapak N chromatographic column 206, and both ends of the Porapak N chromatographic column 206 are respectively connected with the third selector valve 201;
a second MolSieve chromatographic column 207, wherein both ends of the second MolSieve chromatographic column 207 are connected with a third selection valve 201;
a second TCD detector 208, the second TCD detector 208 being connected to the third selector valve 201.
In the present invention, the first selector valve 101 can be switched between an on state and an off state;
the on state of the first selector valve 101 is: the first carrier gas inlet 104 is communicated with the first quantitative ring 103, the Chromosorb103 chromatographic column 107 and the second selection valve 102 in sequence, and the first auxiliary carrier gas inlet 105 is communicated with the first carrier gas outlet 106;
the off state of the first selector valve 101 is: the sample introduction pipeline 3 is communicated with a first quantitative ring 103, a first carrier gas inlet 104 is communicated with a Chromosorb103 chromatographic column 107 and a first carrier gas outlet 106 in sequence, and a first auxiliary carrier gas inlet 105 is communicated with a second selection valve 102.
In the present invention, the second selector valve 102 can be switched between the on state and the off state;
the on state of the second selector valve 102 is: the first selection valve 101 is in direct communication with the first TCD detector 109;
the off state of the second selector valve 102 is: the first selection valve 101 is in communication with a first MolSieve column 108, in turn, a first TCD detector 109.
In the present invention, the third selector valve 201 can be switched between an on state and an off state;
the on state of the third selector valve 201 is: the second carrier gas inlet 203 is communicated with a second quantitative ring 202, a Porapak N chromatographic column 206, a second MolSieve chromatographic column 207 and a second TCD detector 208 in sequence, and the second auxiliary carrier gas inlet 204 is communicated with a second carrier gas outlet 205;
the off state of the third selector valve 201 is: the second quantitative ring 202 is communicated with the sample outlet pipeline 4, the second carrier gas inlet 203 is sequentially communicated with the Porapak N chromatographic column 206 and the second carrier gas outlet 205, and the second auxiliary carrier gas inlet 204 is sequentially communicated with the second MolSieve chromatographic column 207 and the second TCD detector 208.
The utility model discloses a first selection valve 101 is ten logical valves, and second selection valve 102 is six logical valves, and third selection valve 201 is ten logical valves, and ten logical valves include ten openings and rotatable air flue, and six logical valves include six openings and rotatable air flue.
The first carrier gas outlet 106 and the second carrier gas outlet 205 of the present invention are respectively provided with a first needle valve 110 and a second needle valve 209.
The utility model discloses a be equipped with the third needle type valve 111 that both ends are connected with second selection valve 102 respectively on second selection valve 102, when second selection valve 102 set up to the on state, third needle type valve 111 sets up between first selection valve 101 and first TCD detector 109.
The utility model discloses a capacity of first ration ring and second ration ring is 1 mL.
The utility model discloses in, the gas that first carrier gas entry and first supplementary carrier gas entry let in is the helium, and the gas that second carrier gas entry and the supplementary carrier gas entry of second let in is nitrogen gas or helium.
The utility model discloses in, two fore-column Chromosorb103 chromatographic columns and Porapak N chromatographic columns are placed in the constant temperature valve case, and the first MolSieve chromatographic column of analytical column and second MolSieve chromatographic column are placed in the heating cabinet that has the programming function.
The utility model discloses valve, pipeline, joint in the gas circuit are anticorrosive material.
It will be appreciated that the present application also includes a controller for controlling the selector valve to switch between the on and off states, the particular controller being a PLC controller, and the present application also includes a DCC controller for controlling the ventilation of the first secondary carrier gas inlet and the second secondary carrier gas inlet, the particular connections and controls being readily adaptable by those skilled in the art.
The utility model discloses a theory of operation:
firstly, adjusting a first selector valve, a second selector valve and a third selector valve to be in an off state, sampling a gas sample to be detected from a sampling pipeline, keeping the sample in a first quantitative ring and a second quantitative ring, stopping sampling, and then respectively carrying out hydrogen analysis and other gas analysis:
1. hydrogen analysis:
adjusting the third selection valve to be in an on state, introducing carrier gas, and enabling the sample to firstly enter a Porapak N chromatographic column and then to be on the Porapak N chromatographic column H2Almost no reserved gas quickly enters the second MolSieve chromatographic column, the third selection valve is quickly adjusted to be in an off state, the Porapak N chromatographic column is subjected to back flushing, and the gas of other components reserved on the Porapak N chromatographic column is subjected to back flushing and emptying, so that the operation is particularly carried out to avoid CO in mixed components2Damage to the MolSieve chromatographic column; at the moment, the carrier gas introduced from the second auxiliary carrier gas inlet drives H in the second MolSieve chromatographic column2The components enter a detector for detection.
2. Analysis of other gases:
step (1) adjusting the first selector valve to an on state, O2、N2，CH4，CO、CO2And NH3The fractions quickly entered the Chromosorb103 column, where CO was loaded onto the Chromosorb103 column2、NH3Completely separating other components, removing CO2、NH3Introducing other components into a first MolSieve chromatographic column;
step (2) quickly adjusting the second selector valve to be in an on state, and separating CO2、NH3The components directly enter a detector for detection without passing through a first MolSieve chromatographic column;
step (3) whenCO2、NH3After entering the detector, the first selector valve and the second selector valve are adjusted to be in an off state, NH3The latter fraction is blown back and isolated as O in a first MolSieve column2， N2，CH4And the CO component is driven by carrier gas introduced through the first auxiliary carrier gas inlet, is separated by the first MolSieve chromatographic column and then enters the detector for detection.
After the analysis and detection are finished, the first selection valve, the second selection valve and the third selection valve are all restored to an off state, and the next sample introduction is prepared.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.
Claims (10)
1. A gas composition analyzer in ammonia synthesis is characterized by comprising a sample introduction pipeline, a sample outlet pipeline, a first analysis channel and a second analysis channel;
the first analysis channel comprises:
the first selector valve is connected with the outlet of the sample feeding pipeline, and is at least a ten-way valve which can switch the state of an internal passage;
the second selector valve is connected with the first selector valve, is at least a six-way valve and can switch the state of the internal passage of the second selector valve;
the two ends of the first quantitative ring are respectively connected with the first selector valve;
a first carrier gas inlet connected to said first selector valve;
a first auxiliary carrier gas inlet connected to said first selector valve;
a first carrier gas outlet connected to the first selector valve;
the chromatographic column of Chromosorb103, both ends of the chromatographic column of Chromosorb103 connect with said first selector valve separately;
the two ends of the first MolSieve chromatographic column are connected with the second selection valve;
a first TCD detector connected to the second selection valve;
the second analysis channel comprises:
the third selector valve is connected with the first selector valve and the inlet of the sample outlet pipeline, and the third selector valve is at least a ten-way valve and can switch the state of the internal passage of the third selector valve;
the two ends of the second quantitative ring are respectively connected with the third selector valve;
a second carrier gas inlet connected to said third selection valve;
a second secondary carrier gas inlet connected to said third selector valve;
a second carrier gas outlet connected to said third selection valve;
the two ends of the Porapak N chromatographic column are respectively connected with the third selection valve;
the two ends of the second MolSieve chromatographic column are connected with the third selection valve;
a second TCD detector connected to the third selection valve.
2. The analyzer for gas components in ammonia synthesis according to claim 1, wherein the first selector valve is switchable between an on state and an off state;
the on state of the first selector valve is as follows: the first carrier gas inlet is communicated with the first quantitative ring, the Chromosorb103 chromatographic column and the second selection valve in sequence, and the first auxiliary carrier gas inlet is communicated with the first carrier gas outlet;
the off state of the first selector valve is as follows: the sample introduction pipeline is communicated with the first quantitative ring, the first carrier gas inlet is sequentially communicated with the Chromosorb103 chromatographic column and the first carrier gas outlet, and the first auxiliary carrier gas inlet is communicated with the second selection valve.
3. The analyzer for gas components in ammonia synthesis according to claim 1, wherein the second selector valve is switchable between an on state and an off state;
the on state of the second selector valve is as follows: the first selector valve is directly communicated with the first TCD detector;
the off state of the second selector valve is as follows: the first selection valve is communicated with the first MolSieve chromatographic column and the first TCD detector in sequence.
4. The analyzer for gas components in ammonia synthesis according to claim 1, wherein the third selector valve is switchable between an on state and an off state;
the on state of the third selector valve is as follows: the second carrier gas inlet is communicated with a second quantitative ring, a Porapak N chromatographic column, a second MolSieve chromatographic column and a second TCD detector in sequence, and the second auxiliary carrier gas inlet is communicated with the second carrier gas outlet;
the off state of the third selector valve is as follows: the second ration ring with the pipeline that produces a appearance communicate with each other, second carrier gas entry be linked together with Porapak N chromatographic column, second carrier gas export in proper order, the supplementary carrier gas entry of second is linked together with second MolSieve chromatographic column, second TCD detector in proper order.
5. The analyzer for gas components in ammonia synthesis as defined in claim 1, wherein the first selector valve is a ten-way valve, the second selector valve is a six-way valve, the third selector valve is a ten-way valve, the ten-way valve includes ten ports and a rotatable gas passage, and the six-way valve includes six ports and a rotatable gas passage.
6. The analyzer for analyzing the gas components in ammonia synthesis as defined in claim 1, wherein the first and second carrier gas outlets are respectively provided with a first and second needle valve.
7. The analyzer for analyzing the gas components in ammonia synthesis according to claim 1, wherein the second selector valve is provided with a third needle valve, two ends of which are respectively connected with the second selector valve, and when the second selector valve is set to an on state, the third needle valve is arranged between the first selector valve and the first TCD detector.
8. The analyzer for gas components in ammonia synthesis according to claim 1, wherein the first quantitative ring and the second quantitative ring have a capacity of 1 mL.
9. The analyzer for analyzing the gas components in ammonia synthesis as claimed in claim 1, wherein the gas introduced into the first carrier gas inlet and the first auxiliary carrier gas inlet is helium.
10. The analyzer for analyzing the gas components in ammonia synthesis according to claim 1, wherein the gas introduced into the second carrier gas inlet and the second auxiliary carrier gas inlet is nitrogen or helium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920942829.1U CN210604522U (en) | 2019-06-21 | 2019-06-21 | Gas composition analyzer in ammonia synthesis |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920942829.1U CN210604522U (en) | 2019-06-21 | 2019-06-21 | Gas composition analyzer in ammonia synthesis |
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| CN210604522U true CN210604522U (en) | 2020-05-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414705A (en) * | 2022-03-29 | 2022-04-29 | 南京霍普斯科技有限公司 | Gas chromatography detection system and method for constant nitrogen and hydrogen in synthetic ammonia |
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2019
- 2019-06-21 CN CN201920942829.1U patent/CN210604522U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414705A (en) * | 2022-03-29 | 2022-04-29 | 南京霍普斯科技有限公司 | Gas chromatography detection system and method for constant nitrogen and hydrogen in synthetic ammonia |
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