CN202471664U - Sampling device of chromatographic online analyzer of analytical reactor - Google Patents
Sampling device of chromatographic online analyzer of analytical reactor Download PDFInfo
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- CN202471664U CN202471664U CN2012201319947U CN201220131994U CN202471664U CN 202471664 U CN202471664 U CN 202471664U CN 2012201319947 U CN2012201319947 U CN 2012201319947U CN 201220131994 U CN201220131994 U CN 201220131994U CN 202471664 U CN202471664 U CN 202471664U
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Abstract
The utility model relates to a sampling device of a chromatographic online analyzer of an analytical reactor. A right-angle elbow pipe type sampling pipeline is connected between a sample circulation pipeline and a chromatographic instrument, a sampling valve is arranged at the inlet end of the sampling pipeline, a two-way valve is mounted on the vertical edge of the sampling pipeline at a position close to the right-angle elbow pipe, and an instrument air pipeline is connected to the chromatographic instrument. The sampling device of the chromatographic online analyzer of the analytical reactor can prevent the bending part of the sampling pipeline from being blocked by impurities, so that the normal operation of chromatographic instrument is ensured.
Description
Technical field
The utility model relates to the in-line analyzer sampling apparatus of analysis reactor in the petroleum chemical industry, and what be specifically related to is analysis reactor chromatogram in-line analyzer sampling apparatus.
Background technology
The ethylene unit cracking system is to be raw material to mix naphtha, hydrogenation tail oil, lighter hydrocarbons, cycle ethane, propane, and through injecting dilution steam generation, the effect of heat generates mixed pyrolysis gas down.The adjustment of pyrolysis furnace parameter is the analysis data through the on-line chromatograph analyser, judges each component concentration of pyrolysis gas in the reactor, thereby the steam injection of pyrolysis furnace, temperature control etc. are adjusted.In the raw material cracking process; Cracking severity is that the ethylene/propene mass ratio is the important indicator of control pyrolysis furnace operation; Can control ethene, propylene yield ratio and quantum of output through regulating this index, too high cracking severity can influence the operation life of pyrolysis furnace, and low excessively cracking severity then can influence the product yield of output; Increase pyrolysis furnace and get energy consumption, influence cost.So the even running of on-line chromatograph analyser is most important to the ethylene unit cracking system.
The on-line chromatograph analyser is in order to detect the yield that cracking stock is converted into cracking product ethene, propylene, to weigh the effect of cracking process, to have very high selection coefficient, being suitable for the measurement to a plurality of components to be analyzed in the polycomponent mixed gas.The pyrolysis gas in-line analyzer is different from other type instrument, and sampling is simple, and maintenance requirement is also very high.As shown in Figure 1, existing analysis reactor chromatogram in-line analyzer sampling apparatus is connected the sampling line 3 of quarter bend tubular type between sample flow stylet 1 and chromatograph 5, and promptly sampling line 3 is connected and composed by a vertical edge and horizontal sides; Sampling line 3 inlet end places are provided with sample valve 2, and instrument airduct line 4 is connected to chromatograph 5, owing to contain a large amount of heavy oil in the pyrolysis gas; Moisture and impurity, in sampling process, most of impurity of the sampling pretreatment unit of chromatograph ability elimination and greasy dirt; But also have partial impurities to circulate at sampling line 3 with sample gas; After the instrument long-time running, can cause sampling line 3 to stop up, can endanger chromatographic column with the impurity in the up-to-date style gas at the right-angle bend place; Reduce the serviceable life of chromatographic column, cause analyzing interrupt or analyze undesired.
Summary of the invention
The purpose of the utility model provides analysis reactor chromatogram in-line analyzer sampling apparatus, and it is used to solve the sampling line meeting blocking problem of existing analysis reactor chromatogram in-line analyzer sampling apparatus.
The utility model solves the technical scheme that its technical matters adopted: this analysis reactor chromatogram in-line analyzer sampling apparatus is connected the sampling line of quarter bend tubular type between sample flow stylet and chromatograph; Sampling line inlet end place is provided with sample valve; Near the right-angle bend place two-way valve is installed on the vertical edge of sampling line, instrument airduct line is connected to chromatograph.
On the instrument airduct line sintered filter is installed in the such scheme, sintered filter can filter the small amount of impurities in the instrument wind, avoids getting into chromatogram, pollutes chromatographic column, and cleaning is convenient, has guaranteed the normal operation of chromatograph.
Beneficial effect:
The utility model is provided with a two-way valve at sampling line right-angle bend place; Because the right-angle bend place is easy to pile up impurity, and be difficult for purging, when the impurity in the appearance gas is piled up blocking pipeline gradually with the operation of instrument; Can dismantle two-way valve; Feed instrument wind and purge to both sides respectively, prevent that impurity from stopping up bending part, to guarantee the chromatograph operate as normal.
Description of drawings
Fig. 1 is the structural representation of existing analysis reactor chromatogram in-line analyzer sampling apparatus;
Fig. 2 is the structural representation of the utility model.
1 sample flow stylet, 2 sample valves, 3 sampling lines, 4 instrument airduct lines, 5 chromatographs, 6 two-way valves, 7 sintered filters.
Embodiment
In conjunction with accompanying drawing the utility model is further specified:
As shown in Figure 2; This analysis reactor chromatogram in-line analyzer sampling apparatus is connected the sampling line 3 of quarter bend tubular type between sample flow stylet 1 and chromatograph 5, sampling line 3 inlet end places are provided with sample valve 2, near the right-angle bend place two-way valve 6 is installed on the vertical edge of sampling line 3; Through dismounting two-way valve 6; And in sampling line 3, feed instrument wind, and can purge sampling line 3, especially sampling line 3 right-angle bend places are purged; Prevent that impurity from stopping up bending part, influences chromatograph 5 operate as normal.
In order to prevent that further impurity from getting into chromatograph 5, with sintered filter 7 is installed on the instrument airduct line 4 that is connected to chromatograph 5.
The utility model makes the sampling system of chromatogram in-line analyzer obtain very big improvement; The more effective cracking severity of having controlled; And prolonged the serviceable life of chromatogram, the very big daily servicing amount that has reduced instrument operating personnel is for the technological operation personnel provide faster more accurate authentic data.
Claims (2)
1. analysis reactor chromatogram in-line analyzer sampling apparatus; It is characterized in that: this analysis reactor chromatogram in-line analyzer sampling apparatus is connected the sampling line (3) of quarter bend tubular type between sample flow stylet (1) and chromatograph (5); Sampling line (3) inlet end place is provided with sample valve (2); Near the right-angle bend place two-way valve (6) is installed on the vertical edge of sampling line (3), instrument airduct line (4) is connected to chromatograph (5).
2. analysis reactor chromatogram in-line analyzer sampling apparatus according to claim 1 is characterized in that: described instrument airduct line (4) is gone up sintered filter (7) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201319947U CN202471664U (en) | 2012-03-25 | 2012-03-25 | Sampling device of chromatographic online analyzer of analytical reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201319947U CN202471664U (en) | 2012-03-25 | 2012-03-25 | Sampling device of chromatographic online analyzer of analytical reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202471664U true CN202471664U (en) | 2012-10-03 |
Family
ID=46919816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201319947U Expired - Fee Related CN202471664U (en) | 2012-03-25 | 2012-03-25 | Sampling device of chromatographic online analyzer of analytical reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202471664U (en) |
-
2012
- 2012-03-25 CN CN2012201319947U patent/CN202471664U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20130325 |