CN105823803A - Method for detecting ammonia content in condensate liquid in ammonia synthesis technology - Google Patents
Method for detecting ammonia content in condensate liquid in ammonia synthesis technology Download PDFInfo
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- CN105823803A CN105823803A CN201510008034.XA CN201510008034A CN105823803A CN 105823803 A CN105823803 A CN 105823803A CN 201510008034 A CN201510008034 A CN 201510008034A CN 105823803 A CN105823803 A CN 105823803A
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Abstract
The invention belongs to the field of chemical detection, and concretely relates to a method for detecting ammonia content in condensate liquid in an ammonia synthesis technology. The method comprises the following steps: 1) inserting an selective electrode in the to-be-detected condensate liquid in the ammonia synthesis technology; and 2) measuring the conductivity of the condensate liquid transmitter connected with the selective electrode, and conversing the conductivity to the ammonia content. The provided method has the advantages of simple operation and less maintenance amount, can increase company benefit, has important effect for preventing ammonia leakage, indirectly guarantees the production safety and staff safety in the company, has certain effect on environment protection, and reduces waste water exhaust gas discharge.
Description
Technical field
The invention belongs to chemical industry measurement field, the ammonia content detection method being specifically related in a kind of composite ammonia condensate.
Background technology
The recycling of the process condensate in production of synthetic ammonia is a critically important conservation measures, but, due to the leaktightness of wall of tubes of synthesis ammonia system, a small amount of ammonium ion is present in process condensate with free shape or ammonium salts.The process condensate reclaimed in order to ensure synthesis ammonia system process condensate recovery device does not affect the properly functioning of subsequent handling, in process condensate, the content of the impurity such as ammonia must control in certain scope, and the most accurately measuring ammonia content in condensed fluid is the prerequisite recycling condensed fluid.
In characterization processes condensed fluid, the content of ammonium ion is conventional selects determination of electrode method, and the method mainly has a following problem: be 1) plug-in between electrode and film head, it is impossible to seal for a long time, cause the corrosion and damage of contact conductor plug contact；2) have found that after solving first problem that the impact of temperature also has no idea to measure；3) the potassium ion interference ratio in composite ammonia condensate is relatively big, compensates function by potassium ion and can not be fully achieved its requirement measured；4) permeable membrane of electrode is typically only capable to use less than under the operating mode of 40 DEG C less than 0.2Mpa, temperature at pressure, and existing ammonia synthesis process is to be difficult to meet its requirement.It can be seen that the performance of the method is affected by factors such as temperature, pressure and film head sealings so that it is unstable properties, and maintenance cost is much more expensive.
Based on the problem in above-mentioned analysis, the present invention proposes the ammonia content detection method in a kind of composite ammonia condensate.
Summary of the invention
Present invention aim to address the problems such as the ammonia content detection method in existing composite ammonia condensate is high to technological requirement, measured value inaccurate, maintenance cost is high, it is proposed that the ammonia content detection method in a kind of novel composite ammonia condensate.
Ammonia content detection method in a kind of composite ammonia condensate that the present invention proposes includes 1) electrodes selective is inserted in composite ammonia condensate to be measured；2) transmitter being connected with described electrodes selective measures the electrical conductivity of described composite ammonia condensate, and described electrical conductivity changes into the ammonia content of described composite ammonia condensate.
Further, the selectivity factor of described electrodes selective is 10-5。
Further, described transmitter obtains temperature T of described composite ammonia condensate and electrical conductivity DD at described temperature T, by formula DD=DDR/ (1+alpha*(T-TR)) obtain reference temperature TRElectrical conductivity DD of lower correspondenceR, wherein alpha is a constant.
Preferably, described transmitter passes through formula N=(13.2*DD2 R+62.7*DDR) * 10-3Obtain the ammonia content N of described composite ammonia condensate.
Ammonia content detection method in a kind of composite ammonia condensate that the present invention provides; simple to operate; maintenance is little; lifting company benefit; can also play a significant role in terms of preventing ammonia leakage; indirectly ensure company's production safety and personal security, in terms of environmental conservation, also play certain effect, reduce waste water and the discharge of waste gas.
Other features and advantages of the present invention will illustrate in the following description, and, partly become apparent from description, or understand by implementing the present invention.The purpose of the present invention and other advantages can be realized by structure specifically noted in the description write, claims and accompanying drawing and be obtained.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the workflow diagram of the ammonia content detection method in a kind of composite ammonia condensate of the present invention.
Detailed description of the invention
Functional overview
The problems such as, measured value inaccurate, maintenance cost height high to technological requirement in view of the ammonia content detection method in existing composite ammonia condensate, it is proposed that the ammonia content detection method in a kind of novel composite ammonia condensate, to solve relevant issues.
Below in conjunction with the accompanying drawings embodiments of the invention are illustrated.It should be noted that in the case of not conflicting, the technical characteristic in embodiments of the invention and embodiment can be combined with each other, all within protection scope of the present invention.In addition, for the ease of describing, step number used below, but this should not be construed as limitation of the present invention, additionally, although each step described in the following methods shows logical order in flow charts, but in some cases, can with the order being different from herein perform shown or described by step.
Embodiment of the method
According to embodiments of the invention, it is proposed that the ammonia content detection method in a kind of composite ammonia condensate.
Fig. 1 shows the flow chart according to the ammonia content detection method in a kind of composite ammonia condensate of the inventive method embodiment, comprises the steps:
Step S102, inserts electrodes selective in composite ammonia condensate to be measured；
The transmitter that step S104 is connected with described electrodes selective measures the electrical conductivity of described composite ammonia condensate, and described electrical conductivity changes into the ammonia content of described composite ammonia condensate.
The details of above-mentioned process is described below in detail.
(1) step S102
The selectivity factor of described electrodes selective is 10-5。
(2) step S104
Described transmitter obtains temperature T of described composite ammonia condensate and electrical conductivity DD at described temperature T, by formula DD=DDR/ (1+alpha*(T-TR)) obtain reference temperature TRElectrical conductivity DD of lower correspondenceR, wherein alpha is a constant, and its value can be averaged acquisition by repetitive measurement.
Described transmitter passes through formula N=(13.2*DD2 R+62.7*DDR) * 10-3Obtain the ammonia content N of described composite ammonia condensate.
It is preferred that above-mentioned formula can be finely adjusted in conjunction with field measurement, to better adapt to different production environments, obtain ammonia content more accurately.
Ammonia content detection method in a kind of composite ammonia condensate that the present invention provides; simple to operate; maintenance is little; lifting company benefit; can also play a significant role in terms of preventing ammonia leakage; indirectly ensure company's production safety and personal security, in terms of environmental conservation, also play certain effect, reduce waste water and the discharge of waste gas.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (4)
1. the ammonia content detection method in a composite ammonia condensate, it is characterised in that include 1) electrodes selective is inserted in composite ammonia condensate to be measured；2) transmitter being connected with described electrodes selective measures the electrical conductivity of described composite ammonia condensate, and described electrical conductivity changes into the ammonia content of described composite ammonia condensate.
Ammonia content detection method in composite ammonia condensate the most according to claim 1, it is characterised in that the selectivity factor of described electrodes selective is 10-5.
Ammonia content detection method in composite ammonia condensate the most according to claim 1, it is characterized in that, described transmitter obtains temperature T of described composite ammonia condensate and electrical conductivity DD at described temperature T, obtaining electrical conductivity DDR corresponding under reference temperature TR by formula DD=DDR/ ［ 1+alpha × (T-TR) ］, wherein alpha is a constant.
Ammonia content detection method in composite ammonia condensate the most according to claim 1, it is characterised in that described transmitter passes through formula N=(13.2 × DD2 R+ 62.7 × DDR) × 10-3 obtains the ammonia content N of described composite ammonia condensate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510008034.XA CN105823803A (en) | 2015-01-08 | 2015-01-08 | Method for detecting ammonia content in condensate liquid in ammonia synthesis technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510008034.XA CN105823803A (en) | 2015-01-08 | 2015-01-08 | Method for detecting ammonia content in condensate liquid in ammonia synthesis technology |
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| CN105823803A true CN105823803A (en) | 2016-08-03 |
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| CN201510008034.XA Pending CN105823803A (en) | 2015-01-08 | 2015-01-08 | Method for detecting ammonia content in condensate liquid in ammonia synthesis technology |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0205043A2 (en) * | 1985-06-14 | 1986-12-17 | Siemens Aktiengesellschaft | Method and apparatus for measuring ammonia in a gaseous mixture |
| DE3842068A1 (en) * | 1988-12-14 | 1990-06-21 | Buehler Edmund Gmbh & Co | Method and apparatus for determining the ammonium nitrogen content in aqueous systems |
| CN1439874A (en) * | 2002-02-22 | 2003-09-03 | 东洋工程株式会社 | Method and device for determining urea concentration |
| CN2932383Y (en) * | 2006-05-29 | 2007-08-08 | 长春工业大学 | Detector of ion content in solutions |
| CN101093206A (en) * | 2006-06-22 | 2007-12-26 | 华东电力试验研究院有限公司 | Method of online testing and controlling content of chloridion in boiler water |
-
2015
- 2015-01-08 CN CN201510008034.XA patent/CN105823803A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0205043A2 (en) * | 1985-06-14 | 1986-12-17 | Siemens Aktiengesellschaft | Method and apparatus for measuring ammonia in a gaseous mixture |
| DE3842068A1 (en) * | 1988-12-14 | 1990-06-21 | Buehler Edmund Gmbh & Co | Method and apparatus for determining the ammonium nitrogen content in aqueous systems |
| CN1439874A (en) * | 2002-02-22 | 2003-09-03 | 东洋工程株式会社 | Method and device for determining urea concentration |
| CN2932383Y (en) * | 2006-05-29 | 2007-08-08 | 长春工业大学 | Detector of ion content in solutions |
| CN101093206A (en) * | 2006-06-22 | 2007-12-26 | 华东电力试验研究院有限公司 | Method of online testing and controlling content of chloridion in boiler water |
Non-Patent Citations (1)
| Title |
|---|
| 张普: "电导率测量合成氨冷凝液中氨浓度的应用", 《自动化与仪器仪表》 * |
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Application publication date: 20160803 |