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Sulphur ratio on-line monitor and monitoring method

A monitoring instrument, sulfur technology, applied in the direction of instruments, measuring devices, scientific instruments, etc., can solve the problems of short duration, incomplete backflushing, and continuous sampling, etc., and achieve the effect of small engineering maintenance

Active Publication Date: 2013-06-05
FOCUSED PHOTONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The main problems of thermal technology are: (1) Continuous sampling is not possible, and it is necessary to stop sampling regularly and blow back the mist trap
(2) The duration of periodic backflushing is short, and the backflushing is not complete, resulting in sulfur pollution of the detection pool liquid

Method used

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  • Sulphur ratio on-line monitor and monitoring method
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  • Sulphur ratio on-line monitor and monitoring method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] figure 1 , 3 The basic structure diagram of the sulfur ratio online monitor of the embodiment of the present invention is schematically given. Such as figure 1 , 3 As shown, the online sulfur ratio monitor includes:

[0054] Sampling pipe 21, which is used to transport the gas to be tested in the tested pipeline to the first desulfurizer 31 and the second desulfurizer 32;

[0055] The sampling tube can use one 21 or two 21, 22. If one 21 is used, a switching device 91, such as a three-way valve, must be installed on the sampling tube to allow the gas in the pipeline to be tested to enter selectively The first desulfurizer 31 or the second desulfurizer 32 also needs to be provided with waste discharge pipes at the inlet ends of the first and second desulfurizers respectively, and the waste discharge pipe and sampling pipe are also provided Valve 81, 82 and other switch modules, so that the sulfur in the first desulfurizer 31 and the second desulfurizer 32 is discharged from ...

Embodiment 2

[0083] An application example of the online monitor and monitoring method according to Embodiment 1 of the present invention in the detection of coking sulfur tail gas. The temperature of the gas to be tested in the tested pipeline is 160℃, the pressure is 0.025MPa, the measuring range of hydrogen sulfide is 0-2%, and the measuring range of sulfur dioxide is 0-1%. Two sampling tubes and two sampling tubes are used. The sampling end is located on the same radial cross section of the pipeline to be tested, the sampling pipe is respectively connected with the first desulfurizer and the second desulfurizer, and no switch module is provided on the sampling pipe. The temperature control module can not only heat the first and second desulfurizers, but also reduce the temperature of the first and second desulfurizers.

[0084] While the first desulfurizer (the internal temperature is 130°C; of course, it can also be at [160°C, 190°C], when sulfur has high viscosity and poor fluidity), wh...

Embodiment 3

[0086] An application example of the online monitor and monitoring method according to Embodiment 1 of the present invention in the detection of coking sulfur tail gas. The temperature of the gas to be tested in the tested pipe is 160℃, the pressure is 0.025MPa, the measuring range of hydrogen sulfide is 0-2%, and the measuring range of sulfur dioxide is 0-1%. A sampling tube such as a Y-shaped tube is used. , A first valve and a second valve are arranged on the sampling pipe, so that the tested pipeline is selectively connected with the first desulfurizer and the second desulfurizer. A first exhaust pipe and a second exhaust pipe are provided at the inlet ends of the first and second desulfurizers. The first exhaust pipe and the second exhaust pipe are respectively provided with a third valve and a fourth exhaust pipe. The valve is used to control the communication between the first desulfurizer and the second desulfurizer and the outside. The temperature control module can o...

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Abstract

The invention provide a sulphur ratio instrument which comprises a sampling pipe used for conveying gas to be measured in a measured pipeline to a first desulphurization device and a second desulphurization device which are in parallel connection, a temperature control module used for selectively lowering down temperature in the first desulphurization device and the second desulphurization deviceso as to enable sulphur in the gas to be measured to be precipitated, a flow path switching module used for selectively allowing a detection unit and an injection pump to respectively communicate with the first desulphurization device and the second desulphurization device, wherein, the detection unit is arranged at the lower reaches of the first desulphurization device and the second desulphurization device, an injection inlet of the injection pump communicates with the detection unit, and an injection outlet of the injection pump is connected with the flow path switching module, and a heating module used for enabling temperature of gas in pipelines of the upper reaches and the lower reaches of the first desulphurization device and the second desulphurization device and mixed gas in the injection pump to be higher than precipitation temperature of sulphur. The invention has the advantages of high desulphurization efficiency, low cost, etc.

Description

Technical field [0001] The invention relates to the monitoring of the sulfur ratio in a pipeline, in particular to an online monitoring instrument and a detection method for the sulfur ratio. Background technique [0002] At the sulfur recovery process point, it is necessary to analyze the H in the process tail gas 2 S / SO 2 content. Since there is still a certain amount of sulfur in the tail gas (mainly in liquid and gaseous form), when sulfur enters the online sulfur ratio meter in liquid form, it is easy to block the pipeline and pollute the detection chamber of the sulfur ratio meter, which increases the project Maintenance amount and measurement cost. [0003] In order to solve the impact of liquid sulfur in the exhaust gas on the measurement, the following technical solutions are usually adopted: [0004] 1. Cold sampling [0005] The basic principle of this method is: first cool down the sample gas (built-in U-shaped instrument air condenser in the sampling pipeline), cool the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/22G01N1/10G01N1/34G01N33/00
Inventor 郑利武陈生龙李霞秦朝峰
Owner FOCUSED PHOTONICS