CN203587401U

CN203587401U - Online analyzer sampling mechanism for analyzing reactor chromatograph

Info

Publication number: CN203587401U
Application number: CN201320865053.0U
Authority: CN
Inventors: 姜漫; 邬洪宇; 裴非; 崔栋海; 盖大海
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-12-17
Filing date: 2013-12-17
Publication date: 2014-05-07
Anticipated expiration: 2023-12-17

Abstract

The utility model relates to an online analyzer sampling mechanism for analyzing reactor chromatograph. A sampling pipeline is connected between a sample flow pipeline and a chromatographic instrument and comprises a vertical pipe, a transparent bent pipe and a horizontal pipe which are sequentially connected, a connecting disc is arranged at a pipe orifice of the vertical pipe connected with the transparent bent pipe, connecting discs are arranged at two ends of the transparent bent pipe, a connecting disc is arranged at a pipe orifice of the horizontal pipe connected with the transparent bent pipe, the vertical pipe and the transparent bent pipe are correspondingly placed at the connecting disc and then connected through bolts, the transparent bent pipe and the horizontal pipe are correspondingly placed at the connecting disc and then connected through bolts, a sampling valve is arranged at an inlet end of the vertical pipe, and a meter air pipeline is connected to the chromatographic instrument. When the online analyzer sampling mechanism works and impurities in sampled air are gradually accumulated along with running of a meter to plug the transparent bent pipe, the impurities can be intuitively seen through the transparent bent pipe, the impurities accumulated at the transparent bent pipe can be conveniently cleared by disassembling the transparent bent pipe, and normal operation of the chromatographic instrument is ensured.

Description

Analysis reactor on-line chromatographic analysis instrument sampling mechanism

Technical field

The utility model relates to the in-line analyzer sampling apparatus of analysis reactor in petroleum chemical industry, and what be specifically related to is analysis reactor on-line chromatographic analysis instrument sampling mechanism.

Background technology

Pyrolysis Furnance System in Ethylene Plant is that to mix naphtha, hydrogenation tail oil, lighter hydrocarbons, Cycle ethane and propane be raw material, by injecting dilution steam generation, generates mixed pyrolysis gas under the effect of high-temperature heating.The adjustment of pyrolysis furnace parameter is the analysis data by on-line chromatograph analyser, judges each component concentration of pyrolysis gas in reactor, thereby the steam injection of pyrolysis furnace, temperature control etc. is adjusted.In raw material cracking process, cracking severity is that ethylene/propene mass ratio is the important indicator of controlling pyrolysis furnace operation, by regulating this index, can control ethene, propylene yield ratio and quantum of output, too high cracking severity can affect the operation life of pyrolysis furnace, too low cracking severity can affect the product yield of output, increase pyrolysis furnace and obtain energy consumption, affect cost.So the even running of on-line chromatograph analyser is most important to Pyrolysis Furnance System in Ethylene Plant.

On-line chromatograph analyser is in order to detect cracking stock, to be converted into the yield of cracking product ethene, propylene, to weigh the effect of cracking process, has very high selection coefficient, is suitable for the measurement to a plurality of components to be analyzed in polycomponent mixed gas.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 on-line chromatographic analysis instrument sampling apparatus is connected the sampling line of quarter bend tubular type between sample flow line 1 and chromatograph 7, be that sampling line is by a VERTICAL TUBE with transverse tube is integrated forms, sampling line inlet end place arranges sample valve 2, instrument airduct line 6 is connected to chromatograph 7, owing to containing a large amount of heavy oil in pyrolysis gas, moisture and impurity, in sampling process, the most of impurity of sampling pre-processing device energy elimination and the greasy dirt of chromatograph, but also have partial impurities to circulate at sampling line with sample gas, after instrument long-time running, can cause sampling line to stop up at right-angle bend place, with the impurity in up-to-date style gas, can endanger chromatographic column, reduce the serviceable life of chromatographic column, cause analyze interrupting or analyze undesired.

Summary of the invention

The purpose of this utility model is to provide analysis reactor on-line chromatographic analysis instrument sampling mechanism, the problem that it can stop up for solving the sampling line of existing analysis reactor on-line chromatographic analysis instrument sampling apparatus.

The utility model solves the technical scheme that its technical matters adopts: this analysis reactor on-line chromatographic analysis instrument sampling mechanism is connected sampling line between sample flow line and chromatograph, sampling line is by VERTICAL TUBE, transparent bend pipe, transverse tube connects and composes successively, the mouth of pipe place that VERTICAL TUBE is connected with transparent bend pipe has terminal pad, the two ends of transparent bend pipe all have terminal pad, the mouth of pipe place that transverse tube is connected with transparent bend pipe has terminal pad, VERTICAL TUBE is bolted after the corresponding placement in terminal pad place with transparent bend pipe, transparent bend pipe is bolted after the corresponding placement in terminal pad place with transverse tube, VERTICAL TUBE inlet end place arranges sample valve, and instrument airduct line is connected to chromatograph.

In such scheme, on instrument airduct line, sintered filter is installed, sintered filter can filter a small amount of impurity in instrument wind, avoids entering chromatogram, pollutes chromatographic column, and cleaning is convenient, has guaranteed the normal operation of chromatograph.

Beneficial effect:

In the utility model, sampling line is connected and composed successively by VERTICAL TUBE, transparent bend pipe, transverse tube, and transparent bend pipe detachably gets off, when the impurity in sample gas is piled up the transparent bend pipe of obstruction gradually with the operation of instrument, by transparent bend pipe, can see intuitively, by dismantling transparent bend pipe, can be easily the impurity of transparent pipe bent position accumulation be removed, to guarantee that chromatograph normally works.

Accompanying drawing explanation

Fig. 1 is the structural representation of existing analysis reactor on-line chromatographic analysis instrument sampling apparatus;

Fig. 2 is structural representation of the present utility model.

Transparent bend pipe 5 transverse tube 6 instrument airduct line 7 chromatograph 8 sintered filters of 1 sample flow line 2 sample valve 3 VERTICAL TUBE 4.

Embodiment

By reference to the accompanying drawings the utility model is described further:

As shown in Figure 2, this analysis reactor on-line chromatographic analysis instrument sampling mechanism is connected sampling line between sample flow line 1 and chromatograph 7, sampling line is by VERTICAL TUBE 3, transparent bend pipe 4, transverse tube 5 connects and composes successively, VERTICAL TUBE 3 has terminal pad with the mouth of pipe place that transparent bend pipe 4 is connected, the two ends of transparent bend pipe 4 all have terminal pad, transverse tube 5 has terminal pad with the mouth of pipe place that transparent bend pipe 4 is connected, on above-mentioned each terminal pad, be provided with bolt hole, VERTICAL TUBE 3 is bolted after the corresponding placement in terminal pad place with transparent bend pipe 4, transparent bend pipe 4 is bolted after the corresponding placement in terminal pad place with transverse tube 5, VERTICAL TUBE 3 inlet end places arrange sample valve 2, and instrument airduct line 6 is connected to chromatograph 7.

In order further to prevent that impurity from entering chromatograph 7, by being connected on the instrument airduct line 6 of chromatograph 7, sintered filter 8 is installed.

Impurity in sample gas is piled up while stopping up transparent bend pipe 4 gradually with the operation of instrument, by transparent bend pipe 4, can see intuitively, by dismantling transparent bend pipe 4, can easily the impurity of transparent bend pipe 4 places accumulation be removed, to guarantee that chromatograph normally works.

Claims

1. an analysis reactor on-line chromatographic analysis instrument sampling mechanism, it is characterized in that: this analysis reactor on-line chromatographic analysis instrument sampling mechanism is connected sampling line between sample flow line (1) and chromatograph (7), sampling line is by VERTICAL TUBE (3), transparent bend pipe (4), transverse tube (5) connects and composes successively, VERTICAL TUBE (3) has terminal pad with the mouth of pipe place that transparent bend pipe (4) is connected, the two ends of transparent bend pipe (4) all have terminal pad, transverse tube (5) has terminal pad with the mouth of pipe place that transparent bend pipe (4) is connected, VERTICAL TUBE (3) is bolted after the corresponding placement in terminal pad place with transparent bend pipe (4), transparent bend pipe (4) is bolted after the corresponding placement in terminal pad place with transverse tube (5), VERTICAL TUBE (3) inlet end place arranges sample valve (2), and instrument airduct line (6) is connected to chromatograph (7).

2. analysis reactor on-line chromatographic analysis instrument sampling mechanism according to claim 1, is characterized in that: the upper sintered filter (8) of installing of described instrument airduct line (6).