CN102494927B - Sample gas processing detection system and method for on-line analysis meter - Google Patents
Sample gas processing detection system and method for on-line analysis meter Download PDFInfo
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- CN102494927B CN102494927B CN 201110365368 CN201110365368A CN102494927B CN 102494927 B CN102494927 B CN 102494927B CN 201110365368 CN201110365368 CN 201110365368 CN 201110365368 A CN201110365368 A CN 201110365368A CN 102494927 B CN102494927 B CN 102494927B
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Abstract
The invention relates to a sample gas processing detection system and a sample gas processing detection method for a on-line analysis meter. The detection system comprises a sampling valve, a water seal washing tank, a cooler, an oxygen analyser and a Venturi tube which are sequentially connected. The method comprises the following steps of: (1) feeding sample gas to the water seal washing tank to wash; (2) conveying the washed sample gas to a cooler and sending out the chilled and dehydrated sample gas from the upper part of the cooler; and (3) feeding the dehydrated sample gas into the oxygen analyser, discharging the sample gas through the Venturi tube after analysing the oxygen content. The water seal washing tank is adopted to remove dust and the cooler is adopted to dehydrate, so that pulverized coal and moisture in the sample gas are effectively removed, the measurement accuracy of the oxygen analyser is ensured and the guarantee is provided for normal production.
Description
Technical field
The present invention relates to a kind of sample gas disposal detection system and method for on-line analysis instrument.
Background technology
In DCL/Direct coal liquefaction technology, raw coal will become the coal dust that satisfies the certain particle size requirement through coal-grinding could be used as raw material.If yet too high oxygen level in the pulverized coal system just coal dust has the danger of spontaneous combustion, for avoiding dangerous, needs the oxygen content in the on-line monitoring pulverized coal system, replenishes an amount of nitrogen immediately in pulverized coal system in case oxygen content exceeds standard.Therefore, the oxygen content that detects exactly in the pulverized coal system seems very important.
The detection method of the oxygen content in the pulverized coal system is to extract sample gas from pulverized coal system out, detects through delivering to the on-line detector table after the pre-service.The coal dust preparation system of DCL/Direct coal liquefaction factory is little negative pressure system in the prior art, and the slightly a small amount of coal dust of sample gas and steam need it is carried out could detecting after the pre-service for this reason.
Pulverized coal system sample gas disposal detection system comprises the sampling valve 1, heating radiator 2, branch flow container 3, refrigeratory 4, grade one filter 5, air pump 6, secondary filter 7 and the oxygen analyzer 8 that connect successively as shown in Figure 1 in the prior art.Under the swabbing action of air pump 6, the sample gas of extracting out from pulverized coal system enters heating radiator 2 through sampling valve 1, enters separatory jar 3 after the heat radiation, enters in the refrigeratory 4 after the liquid phase in minute flow container 3 in the initial gross separation sample gas.Wherein, cold-producing medium is pressurized air in the refrigeratory 4, and this pressurized air enters refrigeratory by whirlwind refrigerator 9.Sample gas is removed moisture by Quench, enters oxygen analyzer through grade one filter 5, secondary filter 7 successively then and detects 8.Wherein, air pump 6 is between grade one filter 5 and secondary filter 7.The dedusting of sample gas is mainly finished by filtrator, and sample gas is realized coarse filtration by grade one filter 5, filters the dust more than 75 microns, realizes smart the filtration by cascade filtration 7, filters the dust more than 10 microns.Be provided with tapping line at minute flow container 3 and refrigeratory 4 bottoms, discharge hydrops by discharge opeing hand valve.
Yet after coming into operation, this sample gas disposal detection system also has a lot of problems: at first, because the filtrator dedusting is not thorough, cause the oxygen analyzer measuring error very big, even Failure analysis instrument sensor; And owing to adopt air pump suction sample gas, have micro-coal dust in the sample gas and enter air pump, cause the frequent fault of air pump; In addition, owing to directly adopt the filtrator dedusting, it is frequent to cause the grade one filter filter core to be changed; In addition, owing to condensing of steam in the sample lines, can cause coal dust and water to mix and stop up sample lines.These problems cause producing and are difficult to normally carry out, and cause a large amount of economic losses.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of sample gas disposal detection system and method for on-line analysis instrument, be used for solving the sample gas disposal and do not cause oxygen analyzer measuring error problem bigger than normal only.
Be first aspect that achieves the above object, the present invention by the following technical solutions:
A kind of sample gas disposal detection system of on-line analysis instrument comprises:
Sampling valve, described sampling valve one end connects pulverized coal system;
The water seal washing tank connects the sampling valve other end, and washing is from the sample gas of described sampling valve;
Refrigeratory, the sample gas that Quench is drawn from described water seal washing tank top, and remove moisture in the sample gas;
Oxygen analyzer, the oxygen content of the sample gas that analysis is drawn from described refrigeratory top;
Venturi tube connects the outlet of described oxygen analyzer, and the mobile power that provides of sample gas in the whole detection system is provided.
Preferably, between described sampling valve and water seal washing tank, also be provided with dedusting tank.
Preferably, between refrigeratory and oxygen analyzer, also be provided with filtrator; Preferably, described filtrator filtering accuracy is the 6-10 micron, further to remove the coal dust in the sample gas.
Preferably, described detection system also comprises the buffering water pot, and described buffering water pot is connected by pipeline with the bottom of water seal washing tank and refrigeratory.
Preferably, also be provided with blowback lines on the sampling pipeline between dedusting tank and the water seal washing tank, the other end of described blowback lines is connected on the nitrogen pipeline, is used for that the sampling pipeline is carried out blowback and prevents that pipeline from stopping up.
Preferably, also set up the oxygen analyzer by-pass at the two ends of oxygen analyzer, and by-pass and oxygen analyzer entrance all are provided with spinner-type flowmeter.
Preferably, the tank body of described water seal washing tank is the transparent material preparation.
Second aspect for achieving the above object the invention provides a kind of method that adopts said detecting system that sample gas is carried out pre-service and detection, and described method comprises the steps:
(a) the sample gas of extracting out from pulverized coal system feeds water seal washing tank bottom, and coal dust is removed in washing, and the sample gas after the washing is drawn from water seal washing tank top;
(b) the sample gas of drawing from the water seal washing tank enters refrigeratory, and Quench removes the moisture in the sample gas, and the sample gas after the dehydration is drawn from refrigeratory top;
(c) the sample gas of drawing from refrigeratory enters into oxygen analyzer, discharges after the Venturi tube of flowing through is drawn in the oxygen analyzer outlet after the analysis oxygen content.
Preferably, sample gas is introduced into dedusting tank before entering the water seal washing tank, carries out pre-dedusting.
Preferably, also be provided with filtration step in step (b) with (c), make and be sent to oxygen analyzer after filtering through filter from the sample gas of refrigeratory; Preferably, described filtrator filtering accuracy is the 6-10 micron.
Preferably, the bottom of water seal washing tank and refrigeratory is connected to the buffering water pot by pipeline, can enter the buffering water pot automatically when water seal washing tank and refrigeratory middle water level are higher.
Preferably, on the sampling pipeline between dedusting tank and the water seal washing tank, also be provided with blowback lines, regularly with nitrogen the sampling pipeline carried out blowback by blowback lines.
Preferably, sample gas also has part to flow into the oxygen analyzer by-pass when entering oxygen analyzer, and regulates the sample airshed that enters oxygen analyzer by the sample airshed of regulating in the by-pass.
Preferably, described nitrogen blowback and the draining of buffered water jar adopt PLC solenoid valve group controller control, described solenoid valve group to comprise solenoid valve V4 on the drainpipe of the T-valve V1 of blowback lines and sample lines junction, the solenoid valve V2 on the blowback lines, the solenoid valve V3 on the cooler outlet pipeline and buffered water pot bottom jointly; Solenoid valve V2 opens during the nitrogen blowback, and V3 closes, a side of the tangential dedusting tank of V1 T-valve, and solenoid valve V4 opens simultaneously, discharges the water in the buffering water pot, and after blowback and draining were finished, solenoid valve automatically restored to sample gas disposal state, carries out the sample gas disposal.
As seen from the above technical solution, advantage of the present invention is: because employing dedusting tank, water seal washing tank and filtrator have been removed the dust in the sample gas effectively, the employing condenser removes the moisture in the sample gas, the cleanliness factor of the sample gas after therefore handling is very high, thereby guaranteed the accuracy that oxygen analyzer is measured, reduced the damage that dust causes oxygen analyzer in the sample gas.And also the nitrogen blowback lines can be set in the system, regularly the sampling pipeline is carried out blowback, thereby avoided in the sample lines because condensing of steam causes coal dust and water to mix the obstruction sample lines.In addition, abandon the sample mode of air pump, adopted Venturi tube instrument wind injection to take out the negative pressure sampling, for system provides stable pressure of inspiration(Pi), and succinct, non-fault, guaranteed the stable operation of system effectively, normally provide guarantee for what produce.
Description of drawings
Fig. 1 is sample gas disposal detection system synoptic diagram in the prior art;
Fig. 2 is the schematic flow sheet of a kind of embodiment of sample gas disposal detection system provided by the invention;
Fig. 3 is the schematic flow sheet of the another kind of embodiment of sample gas disposal detection system provided by the invention;
Fig. 4 is a kind of schematic flow sheet preferred embodiment of sample gas disposal detection system provided by the invention;
Fig. 5 is the schematic flow sheet of a kind of further preferred embodiment of sample gas disposal detection system provided by the invention.
Embodiment
Further specify the present invention below with reference to accompanying drawing, but therefore the present invention is not subjected to any restriction.
Fig. 2 is the schematic flow sheet of a kind of embodiment of sample gas disposal detection system provided by the invention, and described sample gas disposal detection system comprises sampling valve 11, water seal washing tank 12, refrigeratory 13, oxygen analyzer 14 and Venturi tube 15.Wherein, sampling valve 11 1 ends connect pulverized coal system, and the other end is connected to water seal washing tank 12, with washing sample gas, remove the dusts such as coal dust in the sample gas; Described water seal washing tank 12 is connected to refrigeratory 13, with Quench sample gas, removes the moisture in the sample gas; Described refrigeratory 13 is connected to oxygen analyzer 14 by pipeline, to analyze the oxygen content in the sample gas; Described oxygen analyzer 14 is connected to Venturi tube 15 by pipeline, and under the swabbing action of Venturi tube, sample gas is discharged from.In addition, be provided with water injection pipe on the top of water seal washing tank 12, the bottom is provided with blow-off pipe, is used for changing the water of water seal washing tank 12.Bottom at refrigeratory 13 is provided with drainpipe equally, is used for getting rid of the condensate water of refrigeratory 13 bottoms.
When this system moved, the mobile power that provides of sample gas in the total system was provided Venturi tube 15.Under the effect of Venturi tube 15 suction, enter into water seal washing tank 12 from the sample gas of pulverized coal system through sampling valve 11.Store the water that certain altitude is arranged in the described water seal washing tank 12, sample gas is entered by water seal washing tank 12 bottoms, draws from water seal washing tank 12 tops through the washing back, and the coal dust in the sample gas is removed from sample gas after washing, and stays in the water.
Preferably, water seal washing tank 12 can adopt transparent organic material to make, conveniently to check liquid level and the water quality situation in the water seal washing tank 12, when the liquid level in the water seal washing tank 12 is low, by the water inlet pipe moisturizing on its top.Because impurity content is few in the steam condensate (SC), is fit to be used as sample gas washings, therefore further preferably, described water inlet pipe is connected to the steam condensate (SC) pipe, with the supplementing water of steam condensate (SC) as water seal washing tank 12.When the water quality in the water seal washing tank 12 is too poor, can influence the clean result of sample gas, at this moment, can sewage be discharged by the blow-off pipe of water seal washing tank 12 bottoms, change steam condensate (SC) through the top water inlet pipe, to guarantee the clean result of sample gas.
The sample gas of drawing from water seal washing tank 12 tops enters into the tube side of refrigeratory 13 through pipeline, and Quench is to remove moisture.The cold-producing medium of described condenser 13 can be pressurized air or similar refrigerant, when adopting pressurized air as refrigerant, thereby the shell side that this pressurized air enters condenser 13 through whirlwind refrigerator 21 reduces the temperature of condenser 13, and its temperature control is to realize by the compressed-air actuated amount that control enters the whirlwind refrigerator specifically.
Remove sample gas behind the moisture and draw through pipeline from condenser 13 tops and be sent to oxygen analyzer 14, analyze oxygen content, the sample gas after the analysis from oxygen analyzer 14 outlets through Venturi tube 15 dischargings it.Wherein, described Venturi tube 15 produces negative pressure by injection instrument wind, the sample gas of suction pulverized coal system.Certainly, can also use other air-extractor to replace Venturi tube here, the sample gas of suction pulverized coal system.
Fig. 3 shows another embodiment of the invention, and the difference of itself and embodiment shown in Figure 2 is, also is provided with dedusting tank 17 between sampling valve 11 and water seal washing tank 12, is used for the pre-dedusting of sample gas.Be provided with baffle plate in the described dedusting tank 17, what this baffle plate was vertical is fixed in the dedusting tank 17, and the sample gas that enters dedusting tank 17 produces baffling at the baffle plate place, and passes through from the baffle plate below, and the part dust in the sample gas is attached on the baffle plate, thereby realizes the pre-dedusting of sample gas.When dedusting tank 17 dust stratifications are too much, can regularly open dedusting tank 17 and remove.
Fig. 4 shows of the present invention preferred embodiment a kind of, the difference of itself and embodiment shown in Figure 3 is, between refrigeratory 13 and oxygen analyzer 14, also be provided with filtrator 19, be used for further removing the dust of sample gas, to enter in the oxygen analyzer 14 sample gas cleaner thereby make, and guarantees the work that oxygen analyzer 14 is can be accurately stable.Preferably, the filtering accuracy of described filtrator 19 is the 6-10 micron, in order to remove the dust of denier in the sample gas.Further, described filtrator 19 is in parallel two groups, two groups of blocked operations during work, and one opens one closes.
Fig. 5 shows a kind of further preferred embodiment of the present invention, and the difference of itself and embodiment shown in Figure 4 is, also is provided with buffering water pot 16 and nitrogen blowback lines 18 in this system.Described buffering water pot 16 is used for storing sewage, reduces the sewage discharge number of times.Described nitrogen blowback lines 18 is used for regularly sample lines being carried out blowback, to avoid in the sample lines because condensing of steam causes coal dust and water to mix the obstruction sample lines.
Wherein, described buffering water pot 16 connects water seal washing tank 12 by pipeline 23, described pipeline 23 is arranged in water seal washing tank 12 liquid levels below with the tie point of water seal washing tank 12, when liquid level in the water seal washing tank exceeds pipeline 23 and cushions the tie point of water pot 16, washings can overflow to buffering water pot 16, with the liquid level in the maintenance water seal washing tank 12, thereby make sample gas keep constant substantially through the resistance of detection system.In addition, described buffering water pot 16 also can connect tube side and the shell side of condenser 13 bottoms respectively, to get rid of the hydrops in condenser 13 bottom tube sides and the shell side.In addition, also be provided with drainpipe in the bottom of buffering water pot 16, when buffering water pot 16 middle water levels are higher, can discharge the sewage in the buffering water pot 16.Preferably, at the drainpipe that cushions water pot 16 the solenoid valve V4 that PLC controls is set, with automatic sewage effluent.
One end of described blowback lines 18 connects the sampling pipeline between dedusting tank 17 and water seal washing tank 12, and its other end connects nitrogen supply (NS) pipeline (not shown), by nitrogen sample lines is carried out blowback.Further, described nitrogen blowback and the draining of buffered water jar can be adopted 22 controls of PLC solenoid valve group controller jointly, for example, described solenoid valve group comprises the solenoid valve V4 on the drainpipe of blowback lines 18 and T-valve V1, the solenoid valve V2 on the anti-blowpipe, the solenoid valve V3 on refrigeratory 13 discharge pipes and buffered water jar 16 bottoms of sampling pipe junction.In the production, nitrogen blowback and timing drainage generally can be set at 24 hours, blowback 15 seconds, draining 3 seconds.Solenoid valve V2 opens during the nitrogen blowback, and V3 closes, a side of the tangential dedusting tank 17 of V1 T-valve, and nitrogen is by blowback lines 18 blowback 15 seconds in the system, and solenoid valve V4 opened 3 seconds simultaneously, discharged the water in the buffering water pot 16.After blowback and draining were finished, solenoid valve automatically restored to sample gas disposal state, carries out the sample gas disposal.Certainly, concrete parameter setting can also be adjusted accordingly according to actual condition.
In addition, owing to during oxygen analyzer 14 work the gas flow that flows into analyser is had certain area requirement (0.5-1.5L/min), and need the response time (requiring less than 30 seconds) faster during system works, accelerating the processing renewal speed of sample gas, this need the increase system in the flow of sample gas.Preferably, set up the by-pass 20 of oxygen analyzer 14, and by-pass 20 and oxygen analyzer 14 entrances preferably all are equipped with spinner-type flowmeter, by adjusting the flow of sample gas in the by-pass 20, guarantee that oxygen analyzer 14 entrance sample airsheds are in the claimed range, the response time of total system can obtain divided by the sample airshed by system volume.
Below the response time of the preferred implementation of the present invention shown in Fig. 5 is calculated.
Consider that the sample sampling spot is little negative pressure system, and Venturi tube injection negative pressure is also very little, sample gas is very near from the distance that is sampled to analyser, ignore the state variation of sample gas in system, sample is the response time of system from sampling spot to the Venturi tube transmission time, so the volume of sample gas disposal flow process is the response time principal element that influences detection system in the total system.
Wherein, the dedusting tank volume is 0.5L, the volume 1.0L of water seal washing tank, all to adopt external diameter be that 6mm, thickness of pipe are the stainless-steel tube of 1mm to taking off sample line the flow container from sampling probe, length of pipeline is approximately 20 meters, then the volume of systematic pipeline (unit is L, keeps 2 significant digits) is:
3.14×0.002
2×20×1000L≈0.25L，
Filtrator, refrigeratory and other volume are approximately 0.1L,
Volume V=(0.5+1.0+0.25+0.1) L=1.85L of sample gas disposal flow process in the system then.
Adjusting the by-pass flow is 8.0L/min, and the flow of entrance instrument is 1.0L/min, and then whole injection flow is 9.0L/min.
Hence one can see that, and the response time of system is: 1.85 ÷, 9.0 * 60S=12.3S, less than 30S, the system after namely improving satisfies the requirement to the response time.
For the operating position of instrument after the verification system transformation, below by specific embodiment and Comparative Examples the preferred implementation of the present invention shown in Fig. 5 is described.
In the actual production, the performance index that oxygen analyzer is required are as follows:
Range: 0-15vol%
Measuring error:＜0.5%
Zero point drift:＜0.05%/week
Span drift:＜0.05%/week
In following examples and the Comparative Examples, calibrating gas is by the general helium production of standardization material professional production merchant north gas, nil norm gas is 99.99% nitrogen, range standard gas is the combination gas (more than be percent by volume, data also are percent by volume in the following table) of oxygen content 15.00%, nitrogen content 85.00%.
Embodiment one
Regularly use calibrating gas that oxygen analyzer is carried out zero point and range designation, concrete experimental data sees Table 1,
Table 1 uses standard gas that system is improved the zero point of back instrument and the result of range designation
Instrument is carried out the demarcation of zero point and range week about, the description of test that accumulative total is four groups, and the data accuracy height of instrumental analysis satisfies zero point drift and range drift less than 0.05%/all performance index, need not to carry out zero point and range adjustment.From the instrument principle analysis, it is the one of the main reasons that causes instrument zero point and span drift that the subsidiary dust of measuring media is attached on the sensor, this illustrates sample gas cleanliness factor height after system handles, thereby does not cause zero point drift and the super instrument qualification of range drift of instrument.
Comparative Examples one
In order better to embody beneficial effect of the present invention, before the system that now provides improves, use calibrating gas that oxygen analyzer is carried out the result of zero point and range designation week about, concrete experimental data sees Table 2,
The manual analysis of sample gas and the correlation data of instrumental analysis before table 2 system improves
As can be seen from Table 2, before system improved, zero point, the span drift of instrument were 3.0% to the maximum, and minimum is 1.0%, can not satisfy zero point drift and the range drift performance index less than 0.05%/week.Because zero point, span drift are serious, need reference standard sample gas constantly to adjust the instrument potentiometer and demarcate, but adjusting number of times too much may damage gauge sensor.
Embodiment two
After the verification system transformation, the effect of oxygen analyzer when actual analysis pulverized coal system sample gas week about, carries out instrument on-line analysis and manual analysis to sample gas respectively in a period of time, and concrete data see Table 3,
Table 3 system improves the manual analysis of back sample gas and the correlation data of instrumental analysis
By table 2 as seen, the numerical value consistance of the actual on-line analysis of instrument and manual analysis is relatively good, and (data of manual analysis keep 3 position effective digitals, the instrument site-test analysis is to keep 2 position effective digitals), the analysis result that illustrative system improves the back instrument satisfies error less than 0.5 requirement.
Comparative Examples two
System carries out instrument on-line analysis and manual analysis to sample gas respectively before improving week about in a period of time, concrete data see Table 4,
The manual analysis of sample gas and the correlation data of instrumental analysis before table 4 system improves
As can be seen from Table 4, before system improved, instrument on-line analysis and manual analysis deviation were big, and maximum deviation reaches 1.5, and the analysis result of instrument can not satisfy error less than 0.5 requirement, and the instrument indication is forbidden.
Claims (14)
1. the sample gas disposal detection system of an on-line analysis instrument is characterized in that, comprising:
Sampling valve, described sampling valve one end connects pulverized coal system;
The water seal washing tank connects the sampling valve other end, and washing is from the sample gas of described sampling valve;
Refrigeratory, the sample gas that Quench is drawn from described water seal washing tank top, and remove moisture in the sample gas;
Oxygen analyzer, the oxygen content of the sample gas that analysis is drawn from described refrigeratory top;
Venturi tube connects the outlet of described oxygen analyzer, and the mobile power that provides of sample gas in the whole detection system is provided;
Wherein, between described sampling valve and water seal washing tank, also be provided with dedusting tank, also be provided with blowback lines on the sampling pipeline between dedusting tank and the water seal washing tank, the other end of described blowback lines is connected on the nitrogen pipeline, is used for that the sampling pipeline is carried out blowback and prevents that pipeline from stopping up.
2. detection system as claimed in claim 1 is characterized in that, also is provided with filtrator between refrigeratory and oxygen analyzer, further to remove the coal dust in the sample gas.
3. detection system as claimed in claim 2 is characterized in that, described filtrator filtering accuracy is the 6-10 micron.
4. detection system as claimed in claim 2 is characterized in that, also comprises the buffering water pot, and described buffering water pot is connected by pipeline with the bottom of water seal washing tank and refrigeratory.
5. detection system as claimed in claim 1 is characterized in that, has also set up the oxygen analyzer by-pass at the two ends of oxygen analyzer, and by-pass and oxygen analyzer entrance all are provided with spinner-type flowmeter.
6. as any described detection system among the claim 1-5, it is characterized in that the tank body of described water seal washing tank is the transparent material preparation.
7. one kind is adopted any method that described detection system is handled and detected sample gas among the claim 1-6, and described method comprises the steps:
(a) the sample gas of extracting out from pulverized coal system feeds water seal washing tank bottom, and coal dust is removed in washing, and the sample gas after the washing is drawn from water seal washing tank top;
(b) the sample gas of drawing from the water seal washing tank enters refrigeratory, and Quench removes the moisture in the sample gas, and the sample gas after the dehydration is drawn from refrigeratory top;
(c) the sample gas of drawing from refrigeratory enters into oxygen analyzer, discharges after the Venturi tube of flowing through is drawn in the oxygen analyzer outlet after the analysis oxygen content.
8. method as claimed in claim 7 is characterized in that, sample gas is introduced into dedusting tank before entering the water seal washing tank, carries out pre-dedusting.
9. method as claimed in claim 8 is characterized in that, also is provided with filtration step in step (b) with (c), makes to be sent to oxygen analyzer after filtering through filter from the sample gas of refrigeratory.
10. method as claimed in claim 9 is characterized in that, described filtrator filtering accuracy is the 6-10 micron.
11. method as claimed in claim 9 is characterized in that, the bottom of water seal washing tank and refrigeratory is connected to the buffering water pot by pipeline, can enter the buffering water pot automatically when water seal washing tank and refrigeratory middle water level are higher.
12. method as claimed in claim 11 is characterized in that, also is provided with blowback lines on the sampling pipeline between dedusting tank and the water seal washing tank, regularly with nitrogen the sampling pipeline is carried out blowback by blowback lines.
13. method as claimed in claim 12 is characterized in that, sample gas also has part to flow into the oxygen analyzer by-pass when entering oxygen analyzer, and regulates the sample airshed that enters oxygen analyzer by the sample airshed of regulating in the by-pass.
14. as claim 11 or 12 described methods, it is characterized in that, described nitrogen blowback and the draining of buffered water jar adopt PLC solenoid valve group controller control, described solenoid valve group to comprise solenoid valve V4 on the drainpipe of the T-valve V1 of blowback lines and sample lines junction, the solenoid valve V2 on the blowback lines, the solenoid valve V3 on the cooler outlet pipeline and buffered water pot bottom jointly; Solenoid valve V2 opens during the nitrogen blowback, and V3 closes, a side of the tangential dedusting tank of V1 T-valve, and solenoid valve V4 opens simultaneously, discharges the water in the buffering water pot, and after blowback and draining were finished, solenoid valve automatically restored to sample gas disposal state, carries out the sample gas disposal.
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| CN107812899A (en) * | 2016-09-13 | 2018-03-20 | 宝钢特钢有限公司 | On-line checking molds the device and detection method of argon gas protecting effect |
| CN108344616A (en) * | 2018-01-31 | 2018-07-31 | 锦州中科制管有限公司 | Coal gas on-line analysis pretreatment system and method |
| CN111488390A (en) * | 2019-01-25 | 2020-08-04 | 中国石油化工股份有限公司 | Method and apparatus for processing analytical data of sample and machine-readable storage medium |
| CN112387051A (en) * | 2020-11-13 | 2021-02-23 | 阔创实业(上海)有限公司 | Gas washing device capable of realizing high cleanliness gas |
| CN117470621B (en) * | 2023-10-31 | 2024-06-04 | 连云港石化有限公司 | Detection device and detection process for organic matters in water |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5205177A (en) * | 1991-01-23 | 1993-04-27 | Research-Cottrell, Inc. | Method and apparatus for gas monitoring |
| CN201083651Y (en) * | 2007-09-20 | 2008-07-09 | 宝山钢铁股份有限公司 | Coke oven gas oxygen content analytical equipment |
| CN201262605Y (en) * | 2008-07-16 | 2009-06-24 | 索纪文 | Oxygen analysis system for cyclic hot-water rinshing coke-oven gas |
| CN101551378A (en) * | 2008-12-30 | 2009-10-07 | 湖北宜化化工股份有限公司 | Method and equipment for detecting oxygen content in coal gas |
| CN202453232U (en) * | 2011-11-17 | 2012-09-26 | 神华集团有限责任公司 | Sample gas processing detecting system of online analyzer |
-
2011
- 2011-11-17 CN CN 201110365368 patent/CN102494927B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5205177A (en) * | 1991-01-23 | 1993-04-27 | Research-Cottrell, Inc. | Method and apparatus for gas monitoring |
| CN201083651Y (en) * | 2007-09-20 | 2008-07-09 | 宝山钢铁股份有限公司 | Coke oven gas oxygen content analytical equipment |
| CN201262605Y (en) * | 2008-07-16 | 2009-06-24 | 索纪文 | Oxygen analysis system for cyclic hot-water rinshing coke-oven gas |
| CN101551378A (en) * | 2008-12-30 | 2009-10-07 | 湖北宜化化工股份有限公司 | Method and equipment for detecting oxygen content in coal gas |
| CN202453232U (en) * | 2011-11-17 | 2012-09-26 | 神华集团有限责任公司 | Sample gas processing detecting system of online analyzer |
Non-Patent Citations (1)
| Title |
|---|
| 张磊.煤粉细度对锅炉运行的影晌及取样分析综述.《山东电机工程学会第五届发电专业学术交流会论文集》.2007, * |
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