CN204044120U - A kind of gas chromatograph analyzing gasoline, diesel catalytic cracking production total hydrocarbon component - Google Patents
A kind of gas chromatograph analyzing gasoline, diesel catalytic cracking production total hydrocarbon component Download PDFInfo
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- CN204044120U CN204044120U CN201420162899.2U CN201420162899U CN204044120U CN 204044120 U CN204044120 U CN 204044120U CN 201420162899 U CN201420162899 U CN 201420162899U CN 204044120 U CN204044120 U CN 204044120U
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Abstract
The utility model discloses a kind of gas chromatograph analyzing gasoline, diesel catalytic cracking production total hydrocarbon component, this gas chromatograph comprises a six-way valve, ten two-port valve, three root chromatogram columns, two quantity tubes, two three-way cut-off valves and fid detectors, measures C1 ~ C5 light hydrocarbon component in gasoline, diesel catalytic cracking production and C6 respectively by valve rod handoff technique simultaneously
+high-carbon hydrocarbon component.Gas chromatograph of the present utility model can be applicable to refinery, universities and colleges to aspects such as the researchs of catalytic cracking reaction mechanism, easy to operate, practical, and structure is simple, with low cost.
Description
Technical field
The utility model relates to a kind of instrument analyzing catalytic cracking production, particularly relates to a kind of gas chromatograph analyzing gasoline, diesel catalytic cracking production total hydrocarbon component.
Background technology
Gasoline, diesel catalytic cracking reaction is as a kind of conventional means of Cracking catalyst performance evaluation and study mechanism, its product component is complicated, span is large, main lighter hydrocarbons, C6 and above high-carbon hydrocarbon containing permanent gas, C1 ~ C5, select single gasoline, diesel model components as certain alkane in C6 ~ C16 or alkene as raw material time, its crackate is mainly lighter hydrocarbons and the C6 of C1 ~ C5
+high-carbon hydrocarbon, the compartment analysis of these components especially C1 ~ C5 light hydrocarbon component is had important practical significance for research cracking mechanism.C1 ~ C5 light hydrocarbon component boiling point is lower, and character is close, especially comparatively large to the analysis difficulty of C4 alkene, mainly adopts Al at present
2o
3the chromatographic column of filler carries out compartment analysis to C1 ~ C5 light hydrocarbon component, but Al
2o
3post cannot analyze C6 and above component, simultaneously C6
+high-carbon hydrocarbon component is easily by Al
2o
3post adsorbs, thus reduces Al
2o
3the separating property of post.And be used for analyzing the chromatographic column that C6 and above component generally select low pole siloxane filler, the separation to C1 ~ C5 light hydrocarbon component cannot be realized.Therefore, the multidimensional gas chromatograph of industrial general employing multiple stage gas chromatograph or many valves multicolumn multi-detector is analyzed it." assay office, 2011,30 (11): 121 " adopt three chromatographic gasoline cracking products, wherein a gas chromatograph is for analyzing permanent gas, and another two are respectively used to analyze the lighter hydrocarbons of C1 ~ C5 and C6 and above high-carbon hydrocarbon.But it, when detecting gasoline, diesel catalytic cracking production total hydrocarbon component, need use two gas chromatographs, exist cost of development high, take up room large, need multiple chem workstation to carry out the shortcoming such as processing to data.Although two-dimensional gas chromatography instrument being furnished with the two fid detector of two valve three posts can realize the analysis to above-mentioned product, because it needs two fid detectors, make whole system comparatively complicated, cost of development is still higher.So far, the gas chromatograph adopting single fid detector, only carry out Realization analysis gasoline, diesel catalytic cracking production total hydrocarbon component by Vavle switching technology, single temperature programme is not yet had.
Utility model content
The purpose of this utility model is the deficiency making up prior art, a kind of gas chromatograph analyzing gasoline, diesel catalytic cracking production total hydrocarbon component is provided, adopt single fid detector, only realize the analysis to gasoline, diesel catalytic cracking production total hydrocarbon component by Vavle switching technology, single temperature programme, comprise the analysis to C1 ~ C5, C6 and above component.
The purpose of this utility model is achieved in that
A kind of gas chromatograph analyzing gasoline, diesel catalytic cracking production total hydrocarbon component, feature is that this chromatograph comprises a six-way valve, ten two-port valves, three root chromatogram columns, two quantity tubes, two three-way cut-off valves and fid detector, the first passage of described six-way valve is connected with first three-way cut-off valve right wing, the Road of first three-way cut-off valve is connected with carrier gas line, the second channel of six-way valve is connected with the first passage of ten two-port valves, the 3rd of six-way valve, Hexamermis spp is connected with the two ends of the first quantity tube respectively, the 5th of six-way valve, four-way is the gateway of sample, the second channel of ten two-port valves is connected with one end of the first root chromatogram column, the other end of the first root chromatogram column is connected with the left of second three-way cut-off valve, the third channel of ten two-port valves is connected with the left of first three-way cut-off valve, the four-way of ten two-port valves is connected with one end of the second root chromatogram column, the 3rd root chromatogram column and pre-cut blowback chromatographic column is connected between 5th and the 8th passage of ten two-port valves, the 7th of ten two-port valves, Hexamermis spp is followed successively by the gateway of assisted gas, the 9th of ten two-port valves, 12 passage is connected with the two ends of the second quantity tube respectively, the 11 of ten two-port valves, tenth passage is the gateway of sample, the other end of the second root chromatogram column is connected with the right wing of second three-way cut-off valve, the Road of second three-way cut-off valve is connected with fid detector.
Described six-way valve, ten two-port valves, three-way cut-off valve, quantity tube, sample gateway and the pipeline between six-way valve and ten two-port valves are all placed in heated at constant temperature case, described three root chromatogram columns are placed in post case, and the temperature range of heated at constant temperature case and post case is room temperature ~ 350 DEG C.
Described first root chromatogram column is for analyzing C6
+the capillary chromatographic column of 5% phenyl 95% methyl polysiloxane carrier of component, the second root chromatogram column is the Al for analyzing C1 ~ C5 component
2o
3the capillary chromatographic column of carrier, the 3rd root chromatogram column and pre-cut blowback chromatographic column are the capillary chromatographic column of the 5% phenyl 95% methyl polysiloxane carrier of long 2 m.
Described chromatographic column also can select the chromatography column of identical filler.
Gas chromatograph of the present utility model only adopts a fid detector, a temperature programme, realizes, to the analysis of gasoline, diesel catalytic cracking production total hydrocarbon component, carrying out data processing finally by chromatographic work station switching time by variable valve.
The gas chromatograph of single injection port general on market and single fid detector only need be reequiped by the making of gas chromatograph of the present utility model, a heated at constant temperature Xiang He mono-road assisted gas is installed additional above gas chromatograph, the pipelines such as three-way cut-off valve, six-way valve, ten two-port valves and quantity tube are placed in heated at constant temperature case, adopt the 316 stainless steel pipelines of 1/16 inch the chromatographic column in post case to be connected on the relevant position of each valve in heated at constant temperature case.
Gas chromatograph of the present utility model analyze gasoline, diesel catalytic cracking production time, the light hydrocarbon component of Main Analysis C1 ~ C5 and C6
+high-carbon hydrocarbon component, first analyze the light hydrocarbon component of C1 ~ C5, then analyze C6
+high-carbon hydrocarbon component.Wherein, in high-carbon hydrocarbon is analyzed, the light hydrocarbon component of C1 ~ C5 also can go out peak, but comparatively polycomponent can occur to organize peak form, and the total peak area of C1 ~ C5 is only used as the conversion ratio calculating raw material.
The utility model compared with prior art, has the following advantages:
(1) gas chromatograph with needs two fid detectors is in the past compared, the total analysis that the utility model only needs to configure the gas chromatograph of a fid detector and just can realize hydrocarbon component in gasoline, diesel catalytic cracking production;
(2) apply in modular valve blocks column chromatography system by ten two-port valves first, substitute traditional six-way valve, the purposes such as centralized procurement sample, blowback and post selection, in one, have not only greatly saved cost, and operation is also tending towards simplifying.
Gas chromatograph of the present utility model is particularly suitable for refinery and universities and colleges to aspects such as the researchs of catalytic cracking mechanism, easy to operate, practical, and structure is simple, with low cost.
Accompanying drawing explanation
Fig. 1 is the standby blowback state of the utility model and analyzes C6
+the structural representation of high-carbon hydrocarbon component;
Fig. 2 is the structural representation that the utility model gathers C1 ~ C5 light hydrocarbon component;
Fig. 3 is the structural representation that the utility model analyzes C1 ~ C5 light hydrocarbon component;
Fig. 4 is that the utility model gathers C6
+the structural representation of high-carbon hydrocarbon component;
Fig. 5 is the chromatogram of the utility model analysis positive octene catalytic cracking production total hydrocarbon component.
Embodiment
Consult Fig. 1, the utility model comprises a six-way valve, ten two-port valve, three root chromatogram columns, two quantity tubes, two three-way cut-off valves and fid detectors; Carrier gas and assisted gas all select high pure nitrogen; Fid detector is flame ionization detector general on market; Need be connected with chromatographic work station during use, chromatographic work station can select chromatographic work station logical on market, and such as Zhejiang intelligence reaches N2000 or N3000.
The passage 1 of six-way valve of the present invention is connected with three-way cut-off valve 7 right wing, the Road of three-way cut-off valve 7 is connected with carrier gas line, the passage 2 of six-way valve is connected with the passage 21 of ten two-port valves, the passage 3 of six-way valve is connected with the two ends of quantity tube 9 respectively with 6, the passage 4 of six-way valve is connected with sample export 15 with sample inlet 14 respectively with 5, the passage 22 of ten two-port valves is connected with one end of chromatographic column 11, the other end of chromatographic column 11 is connected with the left of three-way cut-off valve 8, the passage 23 of ten two-port valves is connected with the left of three-way cut-off valve 7, the passage 24 of ten two-port valves is connected with one end of chromatographic column 12, chromatographic column 13 i.e. pre-cut blowback chromatographic column is connected between the passage 25 and 28 of ten two-port valves, the passage 27 and 26 of ten two-port valves is followed successively by the gateway of assisted gas, the passage 29 of ten two-port valves is connected with the two ends of quantity tube 10 respectively with 32, the passage 30 of ten two-port valves is connected with sample export 17 with sample inlet 16 respectively with 31, the other end of chromatographic column 12 is connected with the right wing of three-way cut-off valve 8, the Road of three-way cut-off valve 8 is connected with fid detector, the signal of detecting device processes through chromatographic work station.
Described six-way valve, ten two-port valves, three-way cut-off valve, quantity tube, sample gateway and the pipeline between six-way valve and ten-way valve are all placed in heated at constant temperature case, described three root chromatogram columns are placed in the post case of gas chromatograph, and the temperature control scope of heated at constant temperature case and post case is room temperature ~ 350 DEG C.
Described chromatographic column 11 is for analyzing C6
+the capillary chromatographic column of 5% phenyl 95% methyl polysiloxane carrier of component, select HP-5, specification is 60 m (length) * 0.32 mm (external diameter) * 0.25 μm (film); Chromatographic column 12 is the Al for analyzing C1 ~ C5 component
2o
3the capillary chromatographic column of carrier, selects HP-AL/S, and specification is 50 m (length) * 0.53 mm (external diameter) * 15 μm (film); Chromatographic column 13 i.e. pre-cut blowback chromatographic column is the capillary chromatographic column of the 5% phenyl 95% methyl polysiloxane carrier of long 2 m, selects HP-1, and specification, with chromatographic column 11, intercepts 2 m as chromatographic column 13 from the pillar of long 60 m.
Embodiment
Consult Fig. 1, instrument is in standby blowback state, carrier gas N
2loop is: carrier gas inlet → three-way cut-off valve 7 Roads → three-way cut-off valve 7 right wings → six-way valve passage 1 → six-way valve passage 2 → ten two-port valve passage 21 → ten two-port valve passage 22 → chromatographic column 11 → three-way cut-off valve 8 left → three-way cut-off valve 8 Roads → fid detector; First sample loop is: sample inlet 14 → six-way valve passage 4 → six-way valve passage 3 → quantity tube 9 → six-way valve passage 6 → six-way valve passage 5 → sample export 15; Second sample loop is: sample inlet 16 → ten two-port valve passage 30 → ten two-port valve passage 29 → quantity tube 10 → ten two-port valve passage 32 → ten two-port valve passage 31 → sample export 17; Blowback loop is: assisted gas → ten two-port valve passage 26 → ten two-port valve passage 25 → chromatographic column 13 → ten two-port valve passage 28 → ten two-port valve passage 27; In post is selected from three-way cut-off valve 7 to chromatographic column 12 to the detailed route of three-way cut-off valve 8 be again: three-way cut-off valve 7 left → ten two-port valve passage 23 → ten two-port valve passage 24 → chromatographic column 12 → three-way cut-off valve 8 right wing.
Consult Fig. 2, switch ten two-port valves and three-way cut-off valve 8, realize the on-line sampling of C1 ~ C5 light hydrocarbon component, carrier gas N
2loop is: carrier gas inlet → three-way cut-off valve 7 Roads → three-way cut-off valve 7 right wings → six-way valve passage 1 → six-way valve passage 2 → ten two-port valve passage 21 → ten two-port valve passage 32 → quantity tube 10 → ten two-port valve passage 29 → ten two-port valve passage 28 → chromatographic column 13 → ten two-port valve passage 25 → ten two-port valve passage 24 → chromatographic column 12 → three-way cut-off valve 8 right wings → three-way cut-off valve 8 Roads → fid detector; The same Fig. 1 of first sample loop; Second sample loop is: sample inlet 16 → ten two-port valve passage 30 → ten two-port valve passage 31 → sample export 17; Blowback loop is: assisted gas → 12 valve passage 26 → ten two-port valve passages 27; In post is selected from three-way cut-off valve 7 to chromatographic column 11 to the detailed route of three-way cut-off valve 8 be again: three-way cut-off valve 7 left → ten two-port valve passage 23 → ten two-port valve passage 22 → chromatographic column 11 → three-way cut-off valve 8 left.
Consult Fig. 3, switching three-way stop valve 7 and ten two-port valves, realize the analysis of C1 ~ C5 light hydrocarbon component, carrier gas N
2loop is: carrier gas inlet → three-way cut-off valve 7 Roads → three-way cut-off valve 7 left → ten two-port valve passage 23 → ten two-port valve passage 24 → chromatographic column 12 → three-way cut-off valve 8 right wings → three-way cut-off valve 8 Roads → fid detector; First sample loop, the second sample loop and the same Fig. 1 in blowback loop; In post is selected from three-way cut-off valve 7 to chromatographic column 11 to the detailed route of three-way cut-off valve 8 be again: three-way cut-off valve 7 right wings → six-way valve passage 1 → six-way valve passage 2 → ten two-port valve passage 21 → ten two-port valve passage 22 → chromatographic column 11 → three-way cut-off valve 8 left.
Consult Fig. 4, switching three-way stop valve 7, six-way valve and three-way cut-off valve 8, realizes C6
+the sampling of heavy constituent, carrier gas N
2loop is: carrier gas inlet → three-way cut-off valve 7 Roads → three-way cut-off valve 7 right wings → six-way valve passage 1 → six-way valve passage 6 → quantity tube 9 → six-way valve passage 3 → six-way valve passage 2 → ten two-port valve passage 21 → ten two-port valve passage 22 → chromatographic column 11 → three-way cut-off valve 8 left → three-way cut-off valve 8 Roads → fid detector; First sample loop is: sample inlet 14 → six-way valve passage 4 → six-way valve passage 5 → sample export 15; Second sample loop and the same Fig. 1 in blowback loop; In post is selected from three-way cut-off valve 7 to chromatogram 12 to the detailed route of three-way cut-off valve 8 be again: three-way cut-off valve 7 left → ten two-port valve passage 23 → ten two-port valve passage 24 → chromatographic column 12 → three-way cut-off valve 8 right wing.
As shown in Figure 5, the chromatogram analyzing positive octene catalytic cracking production total hydrocarbon component realizes under the following conditions: the temperature of heated at constant temperature case is set to 180 DEG C; The heating schedule of post case is 60 DEG C and stops 3 min, is warming up to 100 DEG C, stops 15 min, then be warming up to 180 DEG C with 20 DEG C/min with 10 DEG C/min; Start to start chromatographic working procedure to during position as shown in Figure 2 at switching ten two-port valve and three-way cut-off valve 8; Switching three-way stop valve 7 and ten two-port valves position extremely as shown in Figure 3 after 0.5 min is run until chromatographic program; Switching three-way stop valve 7, six-way valve and three-way cut-off valve 8 is run after 8.8 min to position as shown in Figure 4 until chromatographic program; Run after 9.3 min until chromatographic program and switch six-way valve position extremely as shown in Figure 1, until chromatographic program end of run.
Claims (3)
1. analyze the gas chromatograph of gasoline, diesel catalytic cracking production total hydrocarbon component for one kind, it is characterized in that this chromatograph comprises a six-way valve, ten two-port valves, three root chromatogram columns, two quantity tubes, two three-way cut-off valves and fid detector, the first passage of described six-way valve is connected with first three-way cut-off valve right wing, the Road of first three-way cut-off valve is connected with carrier gas line, the second channel of six-way valve is connected with the first passage of ten two-port valves, the 3rd of six-way valve, Hexamermis spp is connected with the two ends of the first quantity tube respectively, the 5th of six-way valve, four-way is the gateway of sample, the second channel of ten two-port valves is connected with one end of the first root chromatogram column, the other end of the first root chromatogram column is connected with the left of second three-way cut-off valve, the third channel of ten two-port valves is connected with the left of first three-way cut-off valve, the four-way of ten two-port valves is connected with one end of the second root chromatogram column, the 3rd root chromatogram column and pre-cut blowback chromatographic column is connected between 5th and the 8th passage of ten two-port valves, the 7th of ten two-port valves, Hexamermis spp is followed successively by the gateway of assisted gas, the 9th of ten two-port valves, 12 passage is connected with the two ends of the second quantity tube respectively, the 11 of ten two-port valves, tenth passage is the gateway of sample, the other end of the second root chromatogram column is connected with the right wing of second three-way cut-off valve, the Road of second three-way cut-off valve is connected with fid detector.
2. gas chromatograph according to claim 1, it is characterized in that described six-way valve, ten two-port valves, three-way cut-off valve, quantity tube, sample gateway and the pipeline between six-way valve and ten two-port valves are all placed in heated at constant temperature case, described three root chromatogram columns are placed in post case, and the temperature range of heated at constant temperature case and post case is room temperature ~ 350 DEG C.
3. gas chromatograph according to claim 1, is characterized in that described first root chromatogram column is for analyzing C6
+the capillary chromatographic column of component, the second root chromatogram column is the Al for analyzing C1 ~ C5 component
2o
3the capillary chromatographic column of carrier, the 3rd root chromatogram column and pre-cut blowback chromatographic column are the capillary chromatographic column of long 2 m.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420162899.2U CN204044120U (en) | 2014-04-04 | 2014-04-04 | A kind of gas chromatograph analyzing gasoline, diesel catalytic cracking production total hydrocarbon component |
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|---|---|---|---|
| CN201420162899.2U CN204044120U (en) | 2014-04-04 | 2014-04-04 | A kind of gas chromatograph analyzing gasoline, diesel catalytic cracking production total hydrocarbon component |
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|---|---|
| CN204044120U true CN204044120U (en) | 2014-12-24 |
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|---|---|---|---|
| CN201420162899.2U Withdrawn - After Issue CN204044120U (en) | 2014-04-04 | 2014-04-04 | A kind of gas chromatograph analyzing gasoline, diesel catalytic cracking production total hydrocarbon component |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940938A (en) * | 2014-04-04 | 2014-07-23 | 华东师范大学 | Gas chromatograph for analysing total-hydrocarbon constituents of gasoline and diesel catalytic cracking products |
-
2014
- 2014-04-04 CN CN201420162899.2U patent/CN204044120U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940938A (en) * | 2014-04-04 | 2014-07-23 | 华东师范大学 | Gas chromatograph for analysing total-hydrocarbon constituents of gasoline and diesel catalytic cracking products |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141224 Effective date of abandoning: 20151223 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |