CN207540841U - A kind of sampling pre-processing device of chemical method the escaping of ammonia on-line analysis monitor - Google Patents

A kind of sampling pre-processing device of chemical method the escaping of ammonia on-line analysis monitor Download PDF

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Publication number
CN207540841U
CN207540841U CN201721581605.XU CN201721581605U CN207540841U CN 207540841 U CN207540841 U CN 207540841U CN 201721581605 U CN201721581605 U CN 201721581605U CN 207540841 U CN207540841 U CN 207540841U
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sampling
ammonia
valve
escaping
chemical
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CN201721581605.XU
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陈云龙
丁瑞峰
边宝丽
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Hky Technology Co Ltd
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Hky Technology Co Ltd
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Abstract

The utility model is related to a kind of sampling pre-processing devices of chemical method the escaping of ammonia on-line analysis monitor.During existing smoke sampling, escape ammonia is easily crystallized in sampler and heat tracing pipe junction, has seriously affected the real effectiveness of follow-up flue gas escape ammonia content detection.Flue gas after filtering by the acquisition valve that high temperature heat tracing pipeline and independent heat tracing are handled is sent to escape ammonia and analyzes measurement module by sampling module described in the utility model, it is crystallized to avoid escape ammonia, and the compression purging air of blowback module carries out sampling line and filter core purging cleaning, it can effectively ensure that device internal duct cleans, to realize that whole device is efficiently run for a long time.Use the sampling pre-processing device of chemical method the escaping of ammonia on-line analysis monitor described in the utility model sustainedly and stably can provide cleaning distortionless sample gas for subsequent analysis measurement module.

Description

A kind of sampling pre-processing device of chemical method the escaping of ammonia on-line analysis monitor
Technical field
The utility model belongs to the escaping of ammonia on-line analysis in flue-gas denitration process and monitors field, and in particular to a kind of chemical method The sampling pre-processing device of the escaping of ammonia on-line analysis monitor.
Background technology
Gas denitrifying technology is one of main method of China's control discharged nitrous oxides.At present, domestic and international generally use The selective catalytic reduction (SCR) and selective non-catalytic reduction method (SNCR) of technical maturity carry out denitrating flue gas.Both Method is required to spray into reducing agent ammonia into flue gas, and the nitrogen oxides in flue gas is made to be reduced into nitrogen.In order to ensure that nitrogen oxides fills Divide reaction and ammonia is avoided excessively to cause new pollution, accurate monitor stringent to the escape ammonia progress in denitrating technique is needed to divide Analysis, to reach the optimization of reducing agent ammonia injection rate, and improves denitration efficiency.
The detection method of escape ammonia content has laser method and chemical method in denitrating technique.It is domestic to use laser mostly at present Method, but since ammonia content of escaping in flue gas is low, in addition being influenced by factors such as light path short, dust interferes, crystallizations, detection error ratio It is larger.In contrast, chemical rule is low with Monitoring lower-cut, can quantify the advantage that measure escape ammonia content.It is examined using chemical method During survey, it is necessary first to acquire the sample gas in flue, existing sampler is mostly extracted in flue using air pump etc. containing escape The sample gas of ammonia, only carries out pipeline subsequent outside walling of flue heat preservation heat tracing processing during extraction, escape ammonia easily sampler with Heat tracing pipe junction crystallizes, and in sampling line dust particles interference, seriously affected the escape ammonia content inspection of follow-up flue gas The real effectiveness of survey.
Utility model content
For defect in the prior art, the purpose of this utility model is to provide a kind of chemical method the escaping of ammonia and divides online Analyse the sampling pre-processing device of monitor.The device sustainedly and stably can analyze measurement module for follow-up the escaping of ammonia and provide cleaning Distortionless escape ammonia sample gas.
To achieve the above objectives, the technical solution adopted in the utility model is:A kind of chemical method the escaping of ammonia on-line analysis prison The sampling pre-processing device of instrument is surveyed, including sampling module and blowback module;
The sampling module includes:Sample filter core, thief rod, probe tube, threeway, flange sleeve, heat tracing pipe, acquisition valve, Take tracheae;
The blowback module includes:Back-flushing valve, air accumulator, compressed gas source pipeline;
The sampling filter core is fixed on the thief rod, and connect one end of the probe tube, the sampling filter Core, thief rod and probe tube are integrally attached to as one on the flange sleeve, and the other end of the probe tube is described in Flange sleeve simultaneously connects the threeway entrance, and one end of the threeway outlet connects the acquisition valve inlet, and the acquisition valve goes out Air pipe inlet is taken described in mouth connection, described that tracheae outlet is taken to connect follow-up escape ammonia analysis measurement module, the heat tracing pipe surrounds Around the threeway and acquisition valve and stretch into flange sleeve inner cavity;
The other end of the threeway outlet connects described back-flushing valve one end, and the back-flushing valve other end connects the air accumulator One end, the air accumulator other end connect the compressed gas source pipeline.
Further, the sampling pre-processing device of chemical method the escaping of ammonia on-line analysis monitor as described above, the acquisition Valve carries independent tracing system.
Further, the sampling pre-processing device of chemical method the escaping of ammonia on-line analysis monitor as described above, the flange Cannula cavity filling heat insulating wall.
Further, the sampling pre-processing device of chemical method the escaping of ammonia on-line analysis monitor as described above, the blowback When valve is closed and acquisition valve is opened, tracheae is taken to export the sample gas after extracting filtering described.
Further, the sampling pre-processing device of chemical method the escaping of ammonia on-line analysis monitor as described above, the acquisition When valve is closed and back-flushing valve is opened, compressed gas source gas enters described three by the compressed gas source pipeline, air accumulator, back-flushing valve Logical, probe tube, sampling filter core, clean the blowback of sampling line and sampling filter core.
The effect of the utility model is:Using device described in the utility model, sampling module can filter flue gas, with The influence that the impurity such as particulate matter detect follow-up escape ammonia in flue gas is avoided, and passes through high temperature heat tracing pipeline and the processing of independent heat tracing Acquisition valve by the flue gas after filtering send to follow-up escape ammonia analyze measurement module, to avoid escape ammonia crystallize be precipitated, Neng Gouwen Surely the flue gas containing escape ammonia is extracted out of flue, and it is undistorted that flue gas is effectively ensured.Moreover, it opens and acquires in back-flushing valve In the case that valve is closed, the compression purging air of blowback module carries out purging cleaning to sampling line and filter core, can effectively ensure that Whole device internal duct cleans, to realize that whole device is efficiently run for a long time.
Description of the drawings
Fig. 1 is the structure diagram of device described in the utility model;
Fig. 2 is that Fig. 1 removes the right view after outer cover and insulating layer.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and detailed description.
As shown in Figure 1 and Figure 2, a kind of sampling pre-processing device of chemical method the escaping of ammonia on-line analysis monitor, including:It takes Original mold heat tracing pipe 1 in the block, end cap 2, probe tube insulating layer 3, flange sleeve 4, sampling filter core 5, thief rod 6, probe tube 7, three Logical 11, valve 12 is acquired, takes tracheae 13 and blowback mould back-flushing valve 10 in the block, compressed gas source pipeline 14, air accumulator 15.
Sampling filter core 5 is fixedly mounted on thief rod 6, and connect one end of probe tube 7, and the other end of probe tube 7 passes through Flange sleeve 4 connects 11 entrance of threeway, and one end connection acquisition 12 entrance of valve that threeway 11 exports, acquisition valve 12 outlet connection takes gas 13 entrance of pipe takes the detection instrument measurement that tracheae 13 is analyzed the sample pneumatic transmission after filtering to follow-up escape ammonia in measurement module to escape Ammonia content.
Thief rod 6 is fixed on flange sleeve 4, and end cap 2 is fixedly connected on flange sleeve 4,4 lumen loading of flange sleeve Probe tube insulating layer 3, heat tracing pipe 1 are centered around around threeway 11 and acquisition valve 12 and stretch into 4 inner cavity of flange sleeve to avoid taking During gas in low temperature node sample gas escape ammonia ingredient crystallization.Flange sleeve 4 is fixed on the furnace wall 8 with insulating layer 9.
10 one end of other end connection back-flushing valve that threeway 11 exports, 10 other end of back-flushing valve connection air accumulator, 15 one end, storage 15 other end of gas tank connection compressed gas source pipeline 14.
It, can be after the outlet of tracheae 13 be taken to extract filtering when back-flushing valve 10 is closed and acquires the unlatching of valve 12 in the present embodiment Sample gas, ammonia content of wherein escaping is detected;When back-flushing valve 10 is opened and acquires the closing of valve 12, compressed gas source gas can To enter threeway 11, probe tube 7, sampling filter core 5 by compressed gas source pipeline 14, air accumulator 15, back-flushing valve 10, to sampling line Blowback cleaning is carried out with sampling filter core.
Device described in the utility model is not limited to the embodiment described in specific embodiment, those skilled in the art Technical solution according to the present utility model obtains other embodiments, also belongs to the technological innovation scope of the utility model.

Claims (5)

1. a kind of sampling pre-processing device of chemical method the escaping of ammonia on-line analysis monitor, including sampling module and blowback module, It is characterized in that:
The sampling module includes:Sampling filter core, probe tube, threeway, flange sleeve, heat tracing pipe, acquires valve, takes gas thief rod Pipe;
Wherein, the sampling filter core is fixed on the thief rod, and connect one end of the probe tube, the sampling filter Core, thief rod and probe tube are integrally attached to as one on the flange sleeve, and the other end of the probe tube is described in Flange sleeve simultaneously connects the threeway entrance, and one end of the threeway outlet connects the acquisition valve inlet, and the acquisition valve goes out Air pipe inlet is taken described in mouth connection, described that tracheae outlet is taken to connect follow-up escape ammonia analysis measurement module, the heat tracing pipe surrounds Around the threeway and acquisition valve and stretch into flange sleeve inner cavity;
The blowback module includes:Back-flushing valve, air accumulator, compressed gas source pipeline;
The other end of the threeway outlet connects described back-flushing valve one end, and the back-flushing valve other end connects the air accumulator one End, the air accumulator other end connect the compressed gas source pipeline.
2. a kind of sampling pre-processing device of chemical method the escaping of ammonia on-line analysis monitor as described in claim 1, feature It is:The acquisition valve carries independent tracing system.
3. a kind of sampling pre-processing device of chemical method the escaping of ammonia on-line analysis monitor as claimed in claim 1 or 2, special Sign is:The flange sleeve lumen loading insulating layer.
4. a kind of sampling pre-processing device of chemical method the escaping of ammonia on-line analysis monitor as claimed in claim 3, feature It is:When the back-flushing valve is closed and acquisition valve is opened, tracheae is taken to export the sample gas after extracting filtering described.
5. a kind of sampling pre-processing device of chemical method the escaping of ammonia on-line analysis monitor as claimed in claim 3, feature It is:When the acquisition valve is closed and back-flushing valve is opened, compressed gas source gas passes through the compressed gas source pipeline, air accumulator, blowback Valve enters the threeway, probe tube, sampling filter core, and blowback cleaning is carried out to sampling line and sampling filter core.
CN201721581605.XU 2017-11-23 2017-11-23 A kind of sampling pre-processing device of chemical method the escaping of ammonia on-line analysis monitor Active CN207540841U (en)

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Application Number Priority Date Filing Date Title
CN201721581605.XU CN207540841U (en) 2017-11-23 2017-11-23 A kind of sampling pre-processing device of chemical method the escaping of ammonia on-line analysis monitor

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Application Number Priority Date Filing Date Title
CN201721581605.XU CN207540841U (en) 2017-11-23 2017-11-23 A kind of sampling pre-processing device of chemical method the escaping of ammonia on-line analysis monitor

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CN207540841U true CN207540841U (en) 2018-06-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112710532A (en) * 2020-12-24 2021-04-27 清华大学 Flying ash ammonia analytical equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112710532A (en) * 2020-12-24 2021-04-27 清华大学 Flying ash ammonia analytical equipment

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