CN204214688U - Gas phase separation sampling system of urea hydrolysis reactor - Google Patents
Gas phase separation sampling system of urea hydrolysis reactor Download PDFInfo
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- CN204214688U CN204214688U CN201420684017.9U CN201420684017U CN204214688U CN 204214688 U CN204214688 U CN 204214688U CN 201420684017 U CN201420684017 U CN 201420684017U CN 204214688 U CN204214688 U CN 204214688U
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- 238000005070 sampling Methods 0.000 title claims abstract description 85
- 238000006460 hydrolysis reaction Methods 0.000 title claims abstract description 35
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000004202 carbamide Substances 0.000 title claims abstract description 34
- 230000007062 hydrolysis Effects 0.000 title claims abstract description 34
- 238000005191 phase separation Methods 0.000 title claims abstract description 21
- 239000007791 liquid phase Substances 0.000 claims abstract description 51
- 239000012071 phase Substances 0.000 claims abstract description 44
- 238000004458 analytical method Methods 0.000 claims abstract description 28
- 239000007789 gas Substances 0.000 claims description 48
- 239000007792 gaseous phase Substances 0.000 claims description 20
- 238000007654 immersion Methods 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 abstract description 9
- 239000007788 liquid Substances 0.000 abstract description 8
- 238000001816 cooling Methods 0.000 abstract description 7
- 238000000926 separation method Methods 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 12
- 229910021529 ammonia Inorganic materials 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- PPBAJDRXASKAGH-UHFFFAOYSA-N azane;urea Chemical compound N.NC(N)=O PPBAJDRXASKAGH-UHFFFAOYSA-N 0.000 description 3
- 230000004083 survival effect Effects 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 239000000427 antigen Substances 0.000 description 1
- 102000036639 antigens Human genes 0.000 description 1
- 108091007433 antigens Proteins 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to a gas phase separation sampling system of a urea hydrolysis reactor, which comprises a sampling pipeline connected to a gas phase outlet of the urea hydrolysis reactor, and a cooler group and a buffer bottle which are sequentially connected to a gas outlet end of the sampling pipeline; a sampling manual valve and a sampling electromagnetic valve are sequentially arranged on the sampling pipeline; the buffer bottle gas phase outlet of the buffer bottle is connected with the gas phase analyzer through a gas phase sample valve, and the buffer bottle liquid phase outlet is connected with the liquid phase sampler through a liquid phase sample valve. Sampling is carried out through a sampling pipeline, cooling is realized by utilizing a cooler group, and further pressure reduction and separation operation are carried out through a buffer bottle, so that high-concentration gas-phase products under high-temperature and high-pressure reaction in a urea hydrolysis reactor can be sampled on line; the sampling system before entering the analysis unit is subjected to gas-liquid cooling, and then cooled gas-liquid separation, so that the interference of moisture in a gas phase on the composition analysis of a product is removed, a subsequent analysis instrument can be better protected, and a test result is more reliable, accurate and true.
Description
Technical field
The utility model belongs to gas denitrifying technology field, relates to the gas-liquid sampler to hydrolysis of urea ammonia reactor in flue gas denitrification system, is specially a kind of gas phase separation sampling system of hydrolysis of urea reactor.
Background technology
The selective catalytic reduction (SCR) of coal-fired power plant removes the NOx in flue gas, is translated into nontoxic nitrogen (N
2) and water (H
2o), emission request is reached.Wherein, denitrification reducing agent ammonia (NH
3) can be obtained by ureal antigen.
Urea is white crystals body particle, does not belong to hazardous chemical category, is convenient to store and transport, adopts hydrolysis of urea ammonia process, and can not cause potential safety hazard because leaking, considering from security domain economic angle, urea ammonia is subject to people's favor gradually.
The situation of GPRS hydrolysis of urea reactor output object, need sample analysis on container, but hydrolysis reactor operates under the operating mode of high temperature, high pressure, usual operating temperature and pressure are 160-200 DEG C, 0.6-2MPa, the pressure of its connecting tube and container maintains more than the saturated vapor pressure of aqueous solution of urea, and moisture in output object can be made to reduce as far as possible.So output gas phase sample will be obtained, further assay, under the operating mode of high temperature, high pressure and special media, difficulty cannot carry out sample analysis to needing in gas phase and liquid phase the change of controling parameter more greatly, if during the direct setting-out of hydrolysis of urea reactor, portion of product component is carried away when not only moisture seriously evaporates, cause sample to lose its authenticity, and the splash of vapour-liquid make the safety problem that can hurt sb.'s feelings.
In prior art, the gas phase composition analysis of hydrolysis of urea reactor carries out composition analysis often through on-line instrument (as chromatograph), but the moisture under high-temperature condition is totally unfavorable to analytical instrument, analysis result is caused to fluctuate unstable, the even inner member of Failure analysis instrument, causes the unreliable of test result; And also can fluctuate because of the impact of high temperature and high pressure on the test of liquid phase, finally cannot determine required location parameter fast and accurately.
Utility model content
For problems of the prior art, the utility model provides a kind of and measures accurately, and structure is simple, safe and reliable, the gas phase separation sampling system of hydrolysis of urea reactor easy to use.
The utility model is achieved through the following technical solutions:
A gas phase separation sampling system for hydrolysis of urea reactor, comprises the sampling pipe on the gaseous phase outlet being connected to hydrolysis of urea reactor, and is connected to cooler package and the surge flask of sampling pipe outlet side in turn; Described sampling pipe is disposed with sampling hand valve and sampling solenoid valve; The surge flask gaseous phase outlet of described surge flask connects gas phase analysis device by gas phase sample valve, and surge flask liquid-phase outlet connects liquid phase sampler by liquid phase sample valve.
Preferably, cooler package comprises the refrigeratory of one-level refrigeratory or plural serial stage setting.
Further, refrigeratory adopts immersion type refrigeratory.
Preferably, the upstream extremity of sampling pipe arranges high temperature high pressure valve, and downstream end arranges blowoff valve by arm.
Further, reliever is between high temperature high pressure valve and sampling hand valve; Reliever is made up of the depressurized system of double-valve seat pressure-reducing valve structure and the safety system of fall lift type spring safety valve.
Further again, the utility model also comprises sampling pipe and the cooler package of the liquid-phase outlet being connected to hydrolysis of urea reactor in turn, and the outlet of cooler package connects corresponding liquid phase sampler by liquid phase sample valve.
Further again, the outlet of the cooler package on liquid-phase outlet one tunnel of hydrolysis of urea reactor is connected with the surge flask identical with gaseous phase outlet one tunnel; The surge flask gaseous phase outlet of surge flask connects gas phase analysis device by gas phase sample valve, and surge flask liquid-phase outlet connects liquid phase sampler by liquid phase sample valve.
Compared with prior art, the utility model has following useful technique effect:
The utility model is sampled by sampling pipe, utilizes cooler package to realize cooling, carries out further step-down and lock out operation, thus the high concentration gas-phase product under high-temperature high-voltage reaction in hydrolysis of urea reactor can be carried out on-line period by surge flask; Gas-liquid cooling is carried out to the sampling system before entering analytic unit, and then by the vapor-liquid separation of cooling, so, in reaction gas-phase product, ammonia concentration can be obtained respectively through subsequent analysis unit by the ammonia concentration in the ammonia concentration in condensation gas phase and condensation liquid phase, not removing only in vapour phase moisture to the interference of product composition analysis, can also better protect subsequent analysis instrument, make test result more reliable accurately true; And vapour phase composition transfer and output object component content can be recorded at any time, easily operate, avoid the Corrosion blockage problem of high concentration ammonia vapour phase to pipeline.
Further, High Temperature Gas phase mixture temperature better can be reduced by the multistage refrigeratory in cooler package, the flexible dismounting of multistage refrigeratory and assembling more can according to actual temperature of charge condition increases and decreases, the separation degree to liquid phase in vapour phase can be regulated, thus the homogeneous phase purity that the security of Quality control collection and subsequent cell are analyzed; Be convenient to the sample presentation analysis respectively of the sample of different phase, the analytical test structure obtained is more accurately true.
Further, the high temperature high pressure valve arranged is utilized to realize overhead control to sampling system, ensureing the normal work in hydrolysis of urea reactor when not sampling, wherein survival gas and moisture can be discharged in advance when sampling by blowoff valve, ensure the accuracy of each sampling.
Further, the reliever that sampling pipe is arranged can regulate the pressure reduction making sample flow in sampling process, ensure that the accuracy of sampling on the one hand, because of the High Temperature High Pressure production fluid of releasing at ambient pressure in container, portion of product component when moisture seriously evaporates, can not be carried away; Can carry out pressure adjustment to the sampling requirement under different condition on the other hand, adaptability is good, and operability is high.
Further, in the sampling piece-rate system of liquid-phase outlet setting can coordinate the sampling of gaseous phase outlet to product, the content of active principle carries out omnibearing treatment and analysis, and by being connected on all four sampling split circuit at liquid-phase outlet with gaseous phase outlet, in case of emergency can exchange use, improve the reliability to gas phase separation sampling.
Accompanying drawing explanation
Fig. 1 is the structural representation of system described in the utility model example 1.
Fig. 2 is the structural representation of system described in the utility model example 2.
Fig. 3 is the structural representation of system described in the utility model example 3.
In figure: 1-liquid-phase outlet; 2-hydrolysis of urea reactor; 3-gaseous phase outlet; 4-high temperature high pressure valve; 5-reliever; 6-sampling pipe; 7-samples hand valve; 8-samples solenoid valve; 9-one-level refrigeratory; 10-secondary coolers; 11-refrigeratory cooling medium inlet; 12-refrigeratory heat eliminating medium exports; 13-surge flask; 14-surge flask gaseous phase outlet; 15-gas phase sample valve; 16-gas phase analysis device; 17-surge flask liquid-phase outlet; 18-liquid phase sample valve; 19-liquid phase sampler; 20-blowoff valve.
Embodiment
Below in conjunction with specific embodiment, the utility model is described in further detail, described in be to explanation of the present utility model instead of restriction.
Example 1
The gas phase separation sampling system of a kind of hydrolysis of urea reactor of the utility model, as shown in Figure 1, it comprises the sampling pipe 6 be connected on the gaseous phase outlet 3 of hydrolysis of urea reactor 2, and is connected to cooler package and the surge flask 13 of sampling pipe 6 outlet side in turn; Described sampling pipe 6 is disposed with sampling hand valve 7 and sampling solenoid valve 8; The surge flask gaseous phase outlet 14 of surge flask 13 connects gas phase analysis device 16 by gas phase sample valve 15, and surge flask liquid-phase outlet 17 connects liquid phase sampler 19 by liquid phase sample valve 18.In this preferred embodiment, cooler package comprises the refrigeratory that two-stage series connection is arranged, and is respectively one-level refrigeratory 9 and secondary coolers 10.As shown in Figure 1, one-level refrigeratory 9 and secondary coolers 10 adopt immersion type refrigeratory, under the condition that equipment normally works, open the water intake ball valve of refrigeratory at different levels, ensure that immersion type refrigeratory is full of heat eliminating medium (as tap water), guarantee safety; The upstream extremity of sampling pipe 6 arranges high temperature high pressure valve 4, and downstream end arranges blowoff valve 20 by arm, and sampling pipe 6 arranges reliever 5 between high temperature high pressure valve 4 and sampling hand valve 7.Wherein, reliever 5 can adopt the depressurized system of double-valve seat pressure-reducing valve structure and the safety system composition of fall lift type spring safety valve, by the adjustment of reliever, can regulate pressure, system stability, without jam.
Check impermeability and the integrity of each valve pipe junction, carry out sufficient preliminary work; Utilize above-described gas phase separation sampling system carry out gas phase separation sampling time method as follows,
1) high temperature high pressure valve 4, sampling hand valve 7, sampling motorized valve 8 and blowoff valve 20 is opened, the foreign material in emptying sampling pipe 6 and air; Fresh in time in order to ensure the sample obtained, instead of remain in pipe joint place, need while each position reasonable sampling, every sub-sampling front opening blowoff valve 20 diffuses, and gets rid of the survival gas in clean sampling pipe and moisture.
2) open the cooling circuit of each refrigeratory in cooler package, close blowoff valve 20, the refrigeratory of the gas phase of sampling successively in cooler package is lowered the temperature, then enters surge flask 13 and carry out gas phase and liquid phase separation in vapour phase.
3) open gas phase sample valve 15, gas phase is incorporated into gas phase analysis device from the surge flask gaseous phase outlet 14 on surge flask 13 top; Open liquid phase sample valve 18, the surge flask liquid-phase outlet 17 of liquid phase from surge flask 13 bottom is incorporated into liquid phase sampler, complete gas phase separation sampling.
The utility model, when carrying out separation sampling, can ensure that the sample obtained is fresh in time, diffuse several minutes, get rid of the survival gas in clean sampling pipe and moisture by every sub-sampling front opening sample valve.By controlling reliever that sampling pipe is arranged and sample cock can make the pressure reduction of sample flow in sampling process little as much as possible, thus avoid because release the High Temperature High Pressure production fluid in container at ambient pressure, carry away portion of product component when moisture seriously evaporates, cause sample to lose its authenticity; Recycling cooler package can reduce High Temperature Gas phase mixture temperature; Cooled gas phase mixture is further simply carried out gas-liquid two-phase separation by surge flask, and be convenient to the sample presentation analysis respectively of the sample of different phase, the analytical test result obtained is more accurately true; Easy operation, safe and reliable, not only solve cooling problem and the decompression problem of High Temperature High Pressure sampling, the safety problem that when it also avoid the direct setting-out of high-temperature high-voltage reaction device, vapour-liquid splash is hurted sb.'s feelings, also improves the measuring accuracy that sampling is separated.
Example 2
As shown in Figure 2, on the basis of example 1, gas phase separation sampling system also comprises sampling pipe 6 and the cooler package of the liquid-phase outlet 1 being connected to hydrolysis of urea reactor 2 in turn, and the outlet of cooler package connects corresponding liquid phase sampler 19 by liquid phase sample valve 18.Ammonia content in liquid phase can be analyzed, can verify the result of gas phase analysis and coordinate analysis, ensure the efficiency of sampling and the precision of subsequent analysis.
Example 3
As shown in Figure 3, on the basis of example 2, the outlet of the cooler package on liquid-phase outlet 1 one tunnel of hydrolysis of urea reactor 2 is connected with the surge flask 13 identical with gaseous phase outlet 3 one tunnel; The surge flask gaseous phase outlet 14 of surge flask 13 connects gas phase analysis device 16 by gas phase sample valve 15, and surge flask liquid-phase outlet 17 connects liquid phase sampler 19 by liquid phase sample valve 18; Thus hydrolysis of urea reactor 2 liquid-phase outlet 1 is provided with sampling pipe 6, cooler package and the surge flask 13 identical with gaseous phase outlet 3, after the separation sampling on gaseous phase outlet 3 one tunnel is broken down; Liquid-phase outlet 1 one tunnel is exchanged with gaseous phase outlet 3 one tunnel and is connected, vapour phase can be proceeded and be separated sampling.Improve the reliability and stability of entire system.
Claims (7)
1. the gas phase separation sampling system of a hydrolysis of urea reactor, it is characterized in that, comprise be connected to hydrolysis of urea reactor (2) gaseous phase outlet (3) on sampling pipe (6), and be connected to cooler package and the surge flask (13) of sampling pipe (6) outlet side in turn; Described sampling pipe (6) is disposed with sampling hand valve (7) and sampling solenoid valve (8); The surge flask gaseous phase outlet (14) of described surge flask (13) connects gas phase analysis device (16) by gas phase sample valve (15), surge flask liquid-phase outlet (17) connects liquid phase sampler (19) by liquid phase sample valve (18), and described sampling pipe (6) arranges reliever (5).
2. the gas phase separation sampling system of a kind of hydrolysis of urea reactor according to claim 1, is characterized in that, described cooler package comprises the refrigeratory of one-level refrigeratory or plural serial stage setting.
3. the gas phase separation sampling system of a kind of hydrolysis of urea reactor according to claim 2, is characterized in that, described refrigeratory adopts immersion type refrigeratory.
4. the gas phase separation sampling system of a kind of hydrolysis of urea reactor according to claim 1, it is characterized in that, the upstream extremity of described sampling pipe (6) arranges high temperature high pressure valve (4), and downstream end arranges blowoff valve (20) by arm.
5. the gas phase separation sampling system of a kind of hydrolysis of urea reactor according to claim 4, is characterized in that, described reliever (5) is between high temperature high pressure valve (4) and sampling hand valve (7); Reliever (5) is made up of the depressurized system of double-valve seat pressure-reducing valve structure and the safety system of fall lift type spring safety valve.
6. the gas phase separation sampling system of a kind of hydrolysis of urea reactor according to claim 5, it is characterized in that, also comprise sampling pipe (6) and the cooler package of the liquid-phase outlet (1) being connected to hydrolysis of urea reactor (2) in turn, the outlet of cooler package connects corresponding liquid phase sampler (19) by liquid phase sample valve (18).
7. the gas phase separation sampling system of a kind of hydrolysis of urea reactor according to claim 6, it is characterized in that, the outlet of the cooler package on liquid-phase outlet (1) tunnel of described hydrolysis of urea reactor (2) is connected with the surge flask (13) identical with gaseous phase outlet (3) tunnel; The surge flask gaseous phase outlet (14) of surge flask (13) connects gas phase analysis device (16) by gas phase sample valve (15), and surge flask liquid-phase outlet (17) connects liquid phase sampler (19) by liquid phase sample valve (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420684017.9U CN204214688U (en) | 2014-11-14 | 2014-11-14 | Gas phase separation sampling system of urea hydrolysis reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420684017.9U CN204214688U (en) | 2014-11-14 | 2014-11-14 | Gas phase separation sampling system of urea hydrolysis reactor |
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| Publication Number | Publication Date |
|---|---|
| CN204214688U true CN204214688U (en) | 2015-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420684017.9U Expired - Fee Related CN204214688U (en) | 2014-11-14 | 2014-11-14 | Gas phase separation sampling system of urea hydrolysis reactor |
Country Status (1)
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|---|---|
| CN (1) | CN204214688U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226124A (en) * | 2016-06-27 | 2016-12-14 | 天津市鹏翔科技有限公司 | Gas-liquid two-phase on-line period analyzes system |
| CN106769221A (en) * | 2016-11-16 | 2017-05-31 | 唐山中润煤化工有限公司 | A kind of tank car is layered automatic sampling system |
| CN108469355A (en) * | 2018-06-08 | 2018-08-31 | 华能国际电力股份有限公司 | Steam-water on-site sampling device and method for power plant |
| CN109459269A (en) * | 2018-12-03 | 2019-03-12 | 森松（江苏）重工有限公司 | A kind of high-temperature pipe sampling system |
| 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 |
-
2014
- 2014-11-14 CN CN201420684017.9U patent/CN204214688U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226124A (en) * | 2016-06-27 | 2016-12-14 | 天津市鹏翔科技有限公司 | Gas-liquid two-phase on-line period analyzes system |
| CN106769221A (en) * | 2016-11-16 | 2017-05-31 | 唐山中润煤化工有限公司 | A kind of tank car is layered automatic sampling system |
| CN106769221B (en) * | 2016-11-16 | 2019-07-26 | 唐山中润煤化工有限公司 | A kind of tank car layering automatic sampling system |
| CN108469355A (en) * | 2018-06-08 | 2018-08-31 | 华能国际电力股份有限公司 | Steam-water on-site sampling device and method for power plant |
| CN109459269A (en) * | 2018-12-03 | 2019-03-12 | 森松（江苏）重工有限公司 | A kind of high-temperature pipe sampling system |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150318 Termination date: 20171114 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |