CN207937224U - A kind of inert gas analysis on-line period module - Google Patents

A kind of inert gas analysis on-line period module Download PDF

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Publication number
CN207937224U
CN207937224U CN201820358492.5U CN201820358492U CN207937224U CN 207937224 U CN207937224 U CN 207937224U CN 201820358492 U CN201820358492 U CN 201820358492U CN 207937224 U CN207937224 U CN 207937224U
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valve
gas
sampling
steel cylinder
filter
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CN201820358492.5U
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司瑞刚
高丽
孙树英
张俊佳
高俊
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Xindi Energy Engineering Technology Co Ltd
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Xindi Energy Engineering Technology Co Ltd
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Abstract

The utility model provides a kind of inert gas analysis on-line period module comprising passes through the sequentially connected condenser of gas pipeline, gas-liquid separator, flowmeter, filter, sampling steel cylinder.Wherein, sampling line on the gas feeding duct and process pipelines of the condenser connects and is equipped with pressure reducing valve, pressure gauge is equipped on gas feeding duct between pressure reducing valve and condenser, gas pipeline between the filter and sampling steel cylinder is equipped with inlet valve, and outlet valve, check valve and shut-off valve are equipped with successively according to the outbound course of gas on the gas outlet duct of the sampling steel cylinder.The utility model can realize the decrease temperature and pressure of high temperature and high pressure gas during gas sample, and the accuracy in detection of the detection and trace sulfide and ammonia of conventional constituents is improved to sulfide, the absorption of the high adsorption activity substance such as ammonia during down-sampling.

Description

A kind of inert gas analysis on-line period module
Technical field
The utility model belongs to gas sample field, and in particular to a kind of inert gas analysis on-line period module.
Background technology
Increase at present under the pressure of the demand of atmospheric environmental pressure and market for natural gas, the enterprises such as coking and steel select coal gas Methane is produced by conversion, and then becomes CNG or LNG for domestic gas or chemical industry synthesis.Process for synthesizing methane needs basis The different adjustment technological parameter of gas composition, the accuracy of gas composition analysis are most important.
Coke-oven plant produces at present, the thicker frame of sampling mode, and sampling mode mainly uses rubber pneumatic bag or sampling bag certainly Pipeline direct sample, there are security risks for sampling process.It can lead to testing result poor reproducibility simultaneously, particularly with micro substance Detection, traditional sampling mode cannot meet detection demand.
There is sampling mode mainly using following connection:
(1) as shown in Figure 1, mostly using main conduit in industrial processes draws branch pipe, valve is added on branch pipe, as Sample tap:Because factory technics pipeline be mostly high temperature and pressure (such as oven gas synthesis LNG projects in pipeline gas majority exist 300-600 degrees Celsius, pressure 14-20 megapascal), there are the danger that high temperature is scalded, also impacting with high pressure are injured for direct sample mode Danger.Sampling bag or balloon burst.
(2) part of the manufacturer uses sampling mode as shown in Figure 2, and cooler is added on process pipe.Such method can be with By gas cooling to room temperature, but the problem of causing, is:Water containing high level in sample gas enters sampling in sampling process Bag.It is more demanding for granule foreign in gas while higher because laboratory air detection device mostly uses six-way valve sample introduction Water content can cause harmful effect to the service life of detection device and the accuracy of inspection result.
Utility model content
The utility model provides a kind of gas sample module, and high temperature and high pressure gas is cooled down, and depressurizes, and dehydration removes simultaneously Solid impurity avoids personal injury caused by high temperature and pressure possibility, reduces damage of the sample to inspection equipment, increases data Accuracy.By the selection of pipe material, reduce sample collection process to the maximum extent for sulfide, the contour suction of ammonia The absorption of attached active material can not only improve the detection of major constituents, more can significantly promote trace sulfide, ammonia Accuracy in detection.
A kind of inert gas of the utility model analyzes on-line period module, including sequentially connected cold by gas pipeline Condenser, gas-liquid separator, flowmeter, filter, sampling steel cylinder, wherein the gas feeding duct and process duct of the condenser Sampling line on line connects and is equipped with pressure reducing valve, and pressure is equipped on the gas feeding duct between pressure reducing valve and condenser Table, the gas pipeline between the filter and sampling steel cylinder are equipped with inlet valve (preferably import needle-valve), the sampling steel cylinder Gas outlet duct on according to gas outbound course successively be equipped with outlet valve (preferably vent needle valve), check valve and cut-off Valve.
The process pipelines are the arbitrary pipelines for gas sample in process for synthesizing methane.
Further, a bypass branch is separated on the gas pipeline between filter and sampling steel cylinder be connected to sampling Gas pipeline between the outlet valve and check valve of steel cylinder, and the setting sampling bypass ball valve in this bypass branch.
Further, one is separated on the gas pipeline between the filter and the inlet valve of sampling steel cylinder for gas Bag sampling and the branch pipe for carrying bypass needle-valve.
Further, the filter is 5 μm of filters, and filter material is the sintered stainless steel by Passivation Treatment.
Further, the junction of the sampling steel cylinder valve and gas pipeline uses quick connector.Facilitate sampling steel cylinder Installation with remove.
Further, the gas pipeline, pressure reducing valve, gas-liquid separator, filter, bypass and take needle-valve, sampling steel cylinder The inner wall of the inlet valve of sample steel cylinder is handled through sulfur passivation.The sulfur passivation processing is Sulfinert processing, for gas-liquid separation Device and sampling steel cylinder can be used inner wall and replace Sulfinert processing through PTFE coating treatments.
Further, the gas outlet duct of the sampling steel cylinder after shut-off valve with downstream process pipeline or low pressure through putting Blank pipe line connects.
Further, the bottom of the gas-liquid separator is equipped with drainage pipeline, and the drainage pipeline is equipped with drain valve.It is anti- Only condensed water brings sampling steel cylinder by gas.
Further, the condenser is equipped with the cooling water inlet pipe and outlet pipe being connect with shell side, in water inlet pipe and goes out Cooling sea water inlet valve and cooling sea water outlet valve are respectively equipped on water pipe.
Further, the top of the condenser is equipped with the air bleeding valve that steam is discharged, and condenser bottom end is set to sewage The blowdown valve of discharge.
The flow is calculated as spinner flowmeter.
The process sampled using the sampling module of the utility model is as follows:
(1) replacement process:Replace the inlet valve and outlet valve of front opening condenser water inlet pipe and outlet pipe, it is ensured that condenser Recirculated cooling water start the cycle over, then open the drain valve of gas-liquid separator, sewage in drainage gas-liquid separator is opened successively Pressure reducing valve (adjustment output pressure is such as 1MPa), the inlet valve of sampling steel cylinder, outlet valve, check valve, shut-off valve, open sampling Bypass ball valve check whether gas normally flow out (can determine whether filter blocks, if gas cannot normally flow out, filter Block), if gas outflow is normal, close sampling bypass ball valve.Gas is through gas pipeline followed by pressure reducing valve, condensation Device, filter, flowmeter, sampling steel cylinder inlet valve, sampling steel cylinder, sampling steel cylinder outlet valve, check valve, is cut gas-liquid separator Only valve, into downstream process pipeline or blow-down pipe.
(2) sampling process:Outlet valve, the inlet valve for closing sampling steel cylinder after the completion of displacement successively open sampling bypass ball Valve removes sampling steel cylinder, completes sampling.
The beneficial effects of the utility model:
(1) high-pressure gas pressure is down to by required pressure by pressure reducing valve, reducing high pressure using sampling steel cylinder may cause The injury to human body.
(2) by condenser, cool down to high-temperature gas, prevent high temperature from scalding, while can will be big in sample gas Measure vapor condensation.
(3) decompression table uses stainless steel decompression table, filter to use the filter by sulfur passivation, gas in the sampling module Liquid/gas separator is made of the steel cylinder of sulfur passivation, and sampling steel cylinder is handled by sulfur passivation, and carries safety valve, pressure 1MPa.
(4) by gas-liquid separator, by condensed moisture from the presence for reducing a large amount of water damages inspection equipment, together When can improve the repeatability of inspection data.
(5) by 5um sintered stainless steel filters, solid particle can be intercepted, prevents solid particle from entering sampling steel Bottle, analytical equipment is damaged in analytic process.
(6) flowmeter is set, is allowed to identical by adjusting each sample flow, the temperature of sampling flow path can be made to keep phase To constant.The sampling repeatability for the substance with adsorption activity can be improved.
(7) blow-down pipe is equipped with check valve, prevents gas in downstream line from returning to sampling line.
(8) it is provided with the branch pipe of sampling bypass ball valve, two functions may be implemented:Examine whether filter blocks;It can With by surveying sampling of the road branch pipe using aluminium foil bag or air bag progress analysis precision sample of less demanding.
Description of the drawings
Fig. 1 is a kind of gas sample modular structure schematic diagram in the prior art, wherein 1 is process pipe, 2 be sampling Bag.
Fig. 2 is another gas sample modular structure schematic diagram in the prior art, wherein 1 is process pipe, 2 be sampling Bag, 3 be sampling cooler.
Fig. 3 is that a kind of inert gas of the utility model analyzes on-line period modular structure schematic diagram, wherein 11 be condensation Device, 12 be gas-liquid separator, and 13 be flowmeter, and 14 be filter, and 15 be sampling steel cylinder, and v1 is pressure reducing valve, and v2 is bypass needle-valve, V3 is import needle-valve, and v4 is vent needle valve, and v5 is check valve, and v6 is shut-off valve, and v7 sampling bypass ball valves, v8 is drain valve, v9 For air bleeding valve, v10 is cooling water inlet valve, and v11 is cooling water outlet valve, and v12 is blowdown valve, and P1 is pressure gauge.
Specific implementation mode
The utility model is further illustrated below in conjunction with the accompanying drawings.
As shown in figure 3, a kind of inert gas analyzes on-line period module, including pass through the sequentially connected condensation of gas pipeline Device 11, gas-liquid separator 12, flowmeter 13, filter 14, sampling steel cylinder 15, wherein the gas feeding duct of the condenser It is connect with the sampling line on process pipelines and is equipped with pressure reducing valve V1, the gas feeding duct between pressure reducing valve V1 and condenser It is equipped with pressure gauge P1, the gas pipeline between the filter and sampling steel cylinder is equipped with import needle-valve V3, the sampling steel It is equipped with vent needle valve V4, check valve V5 and shut-off valve V6 successively according to the outbound course of gas on the gas outlet duct of bottle.
A bypass branch is separated on gas pipeline between filter 14 and sampling steel cylinder is connected to sampling steel cylinder Gas pipeline between vent needle valve V4 and check valve V5, and the setting sampling bypass ball valve V7 in this bypass branch.
One is separated on gas pipeline between the filter 14 and the import needle-valve V3 of sampling steel cylinder for airbag Sampling and the branch pipe for carrying bypass needle-valve V2.
The filter 14 is preferably 5 μm of filters, and material is the sintered stainless steel by Passivation Treatment.
The junction of the sampling steel cylinder valve and gas pipeline preferably uses quick connector.Facilitate the installation of sampling steel cylinder With remove.
The gas pipeline, pressure reducing valve V1, gas-liquid separator 12, filter 14, bypass needle-valve V2, sampling bypass ball valve The import needle-valve V3 of V7, sampling steel cylinder 15 and sampling steel cylinder, vent needle valve V4, check valve V5 and shut-off valve V6 inner wall through sulphur Passivation Treatment.The Passivation Treatment is Sulfinert processing, and inner wall can be used through PTFE for gas-liquid separator and sampling steel cylinder Coating treatment replaces Sulfinert processing.
The gas outlet duct of the sampling steel cylinder through after shut-off valve V6 with downstream process pipeline or lp venting pipeline Connection.
The bottom of the gas-liquid separator is equipped with drainage pipeline, and the drainage pipeline is equipped with drain valve V8.It prevents from condensing Water brings sampling steel cylinder by gas.
Further, the condenser is equipped with the cooling water inlet pipe and outlet pipe being connect with shell side, in water inlet pipe and goes out Cooling sea water inlet valve V10 and cooling sea water outlet valve V11 are respectively equipped on water pipe.
Further, the top of the condenser is equipped with the air bleeding valve V9 that steam is discharged, and condenser bottom end is set to will be dirty The blowdown valve V12 of water discharge.
The flow is calculated as spinner flowmeter.
The process sampled soon using the sampling mold of the utility model is as follows:
(1) replacement process:The cooling sea water inlet valve V10 and cooling water of displacement front opening condenser water inlet pipe and outlet pipe go out Mouth valve V11, it is ensured that the recirculated cooling water of condenser starts the cycle over, and then opens the drain valve V8 of gas-liquid separator, and gas-liquid is discharged Sewage in separator opens pressure reducing valve V1 successively, and adjustment output pressure is 1MPa, the import needle-valve V3 of sampling steel cylinder, goes out lancet Valve V4, check valve V5, shut-off valve V6, opening sampling bypass ball valve V7 check whether that gas normally flows out and (can determine whether that filter is No blocking, if gas cannot normally flow out, filter blocks), if gas outflow is normal, close sampling bypass ball valve V7.Gas through gas pipeline followed by pressure reducing valve V1, condenser 11, gas-liquid separator 12, flowmeter 13, filter 14, into Lancet valve V3, sampling steel cylinder 15, vent needle valve V4, check valve V5, shut-off valve V6, into downstream process pipeline or blow-down pipe.
(2) sampling process:Vent needle valve V4, the import needle-valve V3 of sampling steel cylinder are closed after the completion of displacement successively, opening takes Sample bypasses ball valve V7, and sampling steel cylinder is removed, and completes sampling.

Claims (10)

1. a kind of inert gas analyzes on-line period module, it is characterised in that:It includes sequentially connected cold by gas pipeline Condenser, gas-liquid separator, flowmeter, filter, sampling steel cylinder, wherein the gas feeding duct and process duct of the condenser Sampling line on line connects and is equipped with pressure reducing valve, and pressure is equipped on the gas feeding duct between pressure reducing valve and condenser Table, the gas pipeline between the filter and sampling steel cylinder are equipped with inlet valve, the gas outlet duct of the sampling steel cylinder On according to gas outbound course successively be equipped with outlet valve, check valve and shut-off valve.
2. on-line period module according to claim 1, it is characterised in that:Gas transmission between filter and sampling steel cylinder The gas pipeline that a bypass branch is connected between the outlet valve of sampling steel cylinder and check valve is separated on pipeline, and is bypassed herein Setting sampling bypass ball valve on branch pipe.
3. on-line period module according to claim 2, it is characterised in that:The inlet valve of filter and sampling steel cylinder it Between gas pipeline on separate one for airbag sample and with bypass needle-valve branch pipe.
4. on-line period module according to any one of claim 1-3, it is characterised in that:The filter is 5 μm of mistakes Filter, filter material are the sintered stainless steel by Passivation Treatment.
5. on-line period module according to any one of claim 1-3, it is characterised in that:The sampling steel cylinder valve with The junction of gas pipeline uses quick connector.
6. on-line period module according to any one of claim 1-3, it is characterised in that:The gas pipeline, decompression Valve, gas-liquid separator, filter, bypass needle-valve, inlet valve, the inner wall of outlet valve of sampling steel cylinder and sampling steel cylinder are blunt through sulphur Change is handled.
7. on-line period module according to any one of claim 1-3, it is characterised in that:The gas of the sampling steel cylinder Output channel after shut-off valve with downstream process pipeline or lp venting pipeline through connecting.
8. on-line period module according to any one of claim 1-3, it is characterised in that:The bottom of the gas-liquid separator Portion is equipped with drainage pipeline, and the drainage pipeline is equipped with drain valve.
9. according to any on-line period module in claim 1-3, it is characterised in that:The condenser is equipped with and shell side The cooling water inlet pipe and outlet pipe of connection are respectively equipped with cooling sea water inlet valve and cooling water outlet on water inlet pipe and outlet pipe Valve.
10. on-line period module according to claim 9, it is characterised in that:The top of the condenser is equipped with steam The air bleeding valve of discharge, condenser bottom end are set to the blowdown valve that sewage is discharged.
CN201820358492.5U 2018-03-16 2018-03-16 A kind of inert gas analysis on-line period module Active CN207937224U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111781014A (en) * 2020-06-26 2020-10-16 西安交通大学 Online sampling system and method based on supercritical water oxidation technology

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111781014A (en) * 2020-06-26 2020-10-16 西安交通大学 Online sampling system and method based on supercritical water oxidation technology

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