CN1075889C - On-line detector for safety condition of urea synthetic tower - Google Patents
On-line detector for safety condition of urea synthetic tower Download PDFInfo
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- CN1075889C CN1075889C CN 98104721 CN98104721A CN1075889C CN 1075889 C CN1075889 C CN 1075889C CN 98104721 CN98104721 CN 98104721 CN 98104721 A CN98104721 A CN 98104721A CN 1075889 C CN1075889 C CN 1075889C
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- gas
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- tower
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- urea
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- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 239000004202 carbamide Substances 0.000 title claims abstract description 27
- 238000012545 processing Methods 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 2
- 239000012159 carrier gas Substances 0.000 abstract 2
- 239000007789 gas Substances 0.000 abstract 2
- 230000003014 reinforcing effect Effects 0.000 abstract 2
- 230000002194 synthesizing effect Effects 0.000 abstract 1
- 230000003407 synthetizing effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000034994 death Effects 0.000 description 1
- 231100000517 death Toxicity 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The present invention relates to an on-line detector for the safety condition of a urea synthetizing tower. Carrier gas of each tower segment respectively enters reinforcing layers which are composed of multiple layers of layered plates and are outside inner cylinders of a synthesizing tower, and a groove between the inner cylinders of a tower body through a pipeline and a leakage detecting hole, and then is supplied to a gas analyzer and a signal processing system through the other leakage detecting hole and the other pipeline. When leakage generates, a leakage medium enters the gas analyzer along with the carrier gas to be analyzed, and the signal processing system is used for realizing on-line detection; when the control parameter of the leakage medium achieves the set value, the present invention can immediately send out alarm to prompt people to process in time. The present invention is also suitable for other pressure containers provided with inner cylinders and reinforcing layers with ventilating holes.
Description
The present invention relates to indicate, the device of metering or monitor force vessel safety situation, specifically a kind of on-line measuring device of safety condition of urea synthetic tower.
Urea synthesizer is the large-scale key equipment of urea production, not only bear High Temperature High Pressure, and inner actuating medium has strong corrosivity, we can say, this class pressure vessel all might cause that internal layer leaks, and cause a serious accident thus in long-term use because of the expansion of crackle, the factors such as corrosion of medium.Safe, reliable, the long-time running of guaranteeing this equipment is the target that fertilizer industry is pursued.Yet, check that at present the main way whether urea synthesizer leaks remains the walkaround inspection by operating personnel, human factor influence is bigger, leakage can not in time be found and leads to serious consequence.In fact, there had been the man chemical fertilizer factory of number in China because of urea tower internal layer seriously corroded leaks in recent years, caused tens of days stopping production loss; The serious accident of urea tower blast has taken place in the producer that also has, and has caused personnel's injures and deaths, and economic loss is huge especially, has caused people's very big concern and attention.
What can be used for pressure vessel safety condition detection and monitoring at present mainly is acoustic emission, this technology is better to the monitoring effect of the delayed crack of the hydraulic testing process of solid wall pressure vessel and some weld seam etc., but it is still unresolved that the container of the container that has heat-insulation layer, sandwich construction has been monitored many difficulties.And the multiple channel acousto transmitter costs an arm and a leg, and is subject to the influence of factors such as surrounding environment again, the operation that is difficult to maintain a long-term stability, so, can't utilize acoustic emission that the laminated vessel urea synthesizer that has heat-insulation layer is carried out on-line monitoring at present.
Also having a kind of in the background technology field is to add the seal protection shell outside this class container; in shell, extract the safety monitoring and protecting system used for pressurized containers that leaking medium is also analyzed with aspiration pump; adopt this technology; need by the time leaking medium could obtain analytic signal effectively after between container inner core and containment vessel, running up to a certain degree after leak taking place; retardation time is longer, and can not reflect the development that inner core leaks.For urea synthesizer, this technology has tangible limitation.
The objective of the invention is: provide a kind of on-line detector for safety condition of urea synthetic tower that can find in time that container inner wall leaks, instrument shows, reports to the police and in time handle, to overcome the problem that exists in the prior art field.
For achieving the above object, the technical solution used in the present invention is: it is included in urea synthesizer inner core enhancement Layer outer, that be made up of the multilayer laminate, the leak hunting aperture of synthetic tower both sides respectively with the tower body inner core between groove be communicated with; In each tower section, the stop valve that one end is communicated with vector gas, the other end is communicated with flowmeter is arranged respectively, the other end of flowmeter successively with pipeline, the leak hunting aperture of synthetic tower one side links to each other, the leak hunting aperture of opposite side through pipeline, throttling valve, connect gas analyzer, gas analyzer connects bleeder pipe respectively and via line connects signal processing system.
Compare with background technology, the present invention has following beneficial effect:
1. in case inner core leaks, the gas componant of leaking medium suppressed by vector gas is immediately taken to gas analyzer, and have or not and the high low energy of leaking medium content reflects that in time the situation of leaking takes place the container inner core, and has significantly reduced retardation time;
2. the variation of leaking medium content can reflect the development of leakage situation in the vector gas, for the choose reasonable treatment measures provide foundation and opportunity;
3. owing to react quick, retardation time is short, and many detection lines can be installed on same urea tower, to each circuit change detection, in time determines the position that generation is leaked on the inner core with a cover gas analyzer;
4. signal handling equipment or production control system are reported to the police with the setting value that related parameter is arranged and other operation according to the detection signal of leaking medium, realize the online detection and the monitoring of inner core safety case.
The present invention also is applicable to other pressure vessel of the enhancement Layer with inner core and band air hole.
Description of drawings:
Fig. 1. the on-line detector for safety condition of urea synthetic tower structural representation;
Fig. 2. on-line detector for safety condition of urea synthetic tower embodiment synoptic diagram.
The invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, the present invention is in each tower section, there is an end to be communicated with respectively with vector gas 1, the stop valve 2 that the other end is communicated with flowmeter 3, the other end of flowmeter 3 is through pipeline 4, the leak hunting aperture 5 of synthetic tower one side, leak hunting aperture 5 and wrapping enhancement Layer 6 outside urea synthesizer inner core 7, that be made up of multilayer laminate (or multilayer winding board, multilayer strip winding) and the groove 8 between the tower body inner core 7 are communicated with; The leak hunting aperture 10 of synthetic tower opposite side is communicated with wrapping enhancement Layer 6 outside urea synthesizer inner core 7, that be made up of the multilayer laminate and the groove 8 between the tower body inner core 7, through pipeline 4 ', throttling valve 12, connect gas analyzer 13, gas analyzer 13 connects bleeder pipe 14 respectively and via line 15 connects signal processing system 16.
As shown in Figure 2, vector gas 1 connects operation valve 17 through pipeline, and the other end of operation valve 17 connects stop valve 2 through pressure-regulating valve 18 behind filtrator, the gas distributor 19; Gas through throttling valve 12 connects people's gas collector 20, one end of gas collector 20 respectively through stop valve 22 and gas distributor 19 connected sums through operation valve 23, exsiccator 21, behind the filtrator, connect gas analyzer 13, gas analyzer 13 respectively through stop valve 24 with connect bleeder pipe 14 after gas collector 20 is connected and via line 15 connects signal processing system 16.Every layer of tower Duan Shangjun of urea synthesizer has leak hunting aperture 5,10 to be connected on respectively on gas distributor 19 and the gas collector 20.
As shown in Figure 1 and Figure 2, leak if occur, vector gas 1 is through operation valve 17, pressure-regulating valve 18, filtrator, gas distributor 19, stop valve 2, flowmeter 3, pipeline 4 enter the leak hunting aperture 5 of urea synthesizer 11, leaking medium in the leakage point 9 just together flows out tower body from leak hunting aperture 10 with vector gas, along pipeline 4 ' after throttling valve 12 enters gas collector 20, again from operation valve 23, exsiccator 21, filtrator, enter gas analyzer 13, discharge by blow-down pipe 14 after analyzing leaking medium content; Signal processing system 16 is sent on detection signal road 15 then along the line.Throttling valve 12 makes vector gas flow size appropriateness and keeps stable, then the detection signal of gas leakage content and variation thereof has reflected the leakage situation of inner core, and the variation of vector gas flow can reflect the accumulation in groove of solid, liquid body leakage and corrosion product.Stop valve 22 cleans the usefulness that detection system is carried out circuit switched by vector gas.
This installs each circuit and moves by parallel way, leaks in case find the tower body inner core, and each bar circuit of change detection then is so that determine to take place the tower section of leaking.When the controlled variable of leaking medium reaches setting value, send warning by instrument or signal handling equipment immediately, the prompting people take measures, and in time handle.
Claims (5)
1. on-line detector for safety condition of urea synthetic tower, it is included in urea synthesizer inner core [7] enhancement Layer [6] outer, that be made up of the multilayer laminate, the leak hunting aperture [5 of synthetic tower both sides, 10] respectively with tower body inner core [7] between groove [8] be communicated with, it is characterized in that: in each tower section, the other end that one end is communicated with vector gas [1], the other end is communicated with flowmeter [3] stop valve [2], flowmeter [3] arranged respectively successively with pipeline [4], the leak hunting aperture [5] of synthetic tower one side links to each other; The leak hunting aperture of opposite side [10] through pipeline [4], throttling valve [12], connect gas analyzer [13], gas analyzer [13] connects bleeder pipe [14] respectively and via line [15] connects signal processing system [16].
2. on-line detector for safety condition of urea synthetic tower according to claim 1, it is characterized in that: vector gas [1] connects operation valve [17] through pipeline, and the other end of operation valve [17] connects stop valve [2] behind pressure-regulating valve [18], filtrator, gas distributor [19].
3. on-line detector for safety condition of urea synthetic tower according to claim 1, it is characterized in that: the gas through throttling valve [12] connects gas collector [20], one end of gas collector [20] connects gas analyzer [13] behind operation valve [23], exsiccator [21], filtrator, gas analyzer [13] respectively through stop valve [24] with after gas collector [20] is connected, connect bleeder pipe [14] and via line [15] connects signal processing system [16].
4. according to claim 2 or 3 described on-line detector for safety condition of urea synthetic tower, it is characterized in that: vector gas [1] connects operation valve [17], operation valve [17] through pipeline the other end connects stop valve [2] behind pressure-regulating valve [18], filtrator, gas distributor [19]; Gas through throttling valve [12] connects gas collector [20], one end of gas collector connects gas analyzer [13] through stop valve [22] and gas distributor [19] connected sum respectively behind operation valve [23], exsiccator [21], filtrator, gas analyzer [13] respectively through stop valve [24] with after gas collector [20] is connected, connect bleeder pipe [14] and via line [15] connects signal processing system [16].
5. according to claim 2 or 3 described on-line detector for safety condition of urea synthetic tower, it is characterized in that: every layer of tower Duan Shangjun of urea synthesizer has leak hunting aperture [5], [10] to be connected on respectively on gas distributor [19] and the gas collector [20].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98104721 CN1075889C (en) | 1998-01-23 | 1998-01-23 | On-line detector for safety condition of urea synthetic tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98104721 CN1075889C (en) | 1998-01-23 | 1998-01-23 | On-line detector for safety condition of urea synthetic tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1186955A CN1186955A (en) | 1998-07-08 |
| CN1075889C true CN1075889C (en) | 2001-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98104721 Expired - Fee Related CN1075889C (en) | 1998-01-23 | 1998-01-23 | On-line detector for safety condition of urea synthetic tower |
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| Country | Link |
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| CN (1) | CN1075889C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1085106C (en) * | 1998-11-12 | 2002-05-22 | 华东理工大学 | Urea synthesizing tower with evenly distributed reaction material residance period |
| CN101256170B (en) * | 2008-03-20 | 2011-04-27 | 山东省特种设备检验研究院 | Method for verification of laminated board dressing type container |
| CN102384822A (en) * | 2010-09-06 | 2012-03-21 | 贵州金赤化工有限责任公司 | Detection device for monitoring leak detection tube of urine high voltage equipment |
| CN102680178A (en) * | 2012-06-15 | 2012-09-19 | 山西省霍州市化学工业有限责任公司 | Leakage checking method for multilayer wrapped type high-pressure container and device for method |
| CN104807605A (en) * | 2014-01-24 | 2015-07-29 | 上海华林工业气体有限公司 | Detection apparatus of leakage point of synthetic gas in cold box for producing hydrogen and carbon monoxide |
-
1998
- 1998-01-23 CN CN 98104721 patent/CN1075889C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1186955A (en) | 1998-07-08 |
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