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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, sulfur pollution in the detection pool, incomplete backflushing, etc., and achieve the effect of small engineering maintenance

Active Publication Date: 2012-04-11
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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

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

[0055]The sampling pipe can adopt one 21 or two 21, 22. If one 21 is used, a switching device 91, such as a three-way valve, should be provided on the sampling pipe, so that the gas in the pipeline under test can selectively enter 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 desulfurizer and the second desulfurizer respectively, and waste discharge pipes and sampling pipes are also provided with Switch modules such as valves 81, 82, so that the sulfur in the first desulfurizer 31 and the second...

Embodiment 2

[0083] An application example of the on-line monitor and monitoring method according to Embodiment 1 of the present invention in the detection of coking sulfur tail gas. The temperature in the gas to be tested in the pipeline to be tested is 160°C, the pressure is 0.025MPa, the measuring range of hydrogen sulfide is 0-2%, and the measuring range of sulfur dioxide is 0-1%, using two sampling tubes, two sampling tubes The sampling end is on the same radial section of the pipeline under test, and the sampling pipes are respectively connected to the first desulfurizer and the second desulfurizer, and no switch module is arranged on the sampling pipes. The temperature control module can not only heat the first desulfurizer and the second desulfurizer, but also reduce the temperature of the first desulfurizer and the second desulfurizer.

[0084] While the first sulfur remover (internal temperature is 130°C; of course, it can also be at [160°C, 190°C], at this time, the viscosity of...

Embodiment 3

[0086] An application example of the on-line monitor and monitoring method according to Embodiment 1 of the present invention in the detection of coking sulfur tail gas. The temperature in the gas to be tested in the pipeline to be tested is 160°C, the pressure is 0.025MPa, the measuring range of hydrogen sulfide is 0-2%, and the measuring range of sulfur dioxide is 0-1%, using a sampling tube, such as a Y-shaped tube , setting a first valve and a second valve on the sampling pipe so as to selectively connect the measured pipeline with the first desulfurizer and the second desulfurizer. The first waste discharge pipe and the second waste discharge pipe are arranged at the inlet ends of the first desulfurizer and the second desulfurizer, and the third valve and the fourth valve are respectively arranged on the first waste discharge pipe and the second waste discharge pipe. The valve is used to control whether the first desulfurizer, the second desulfurizer are connected with th...

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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 pipelines, in particular to an online sulfur ratio monitor and a detection method. 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 the tail gas still contains a certain amount of sulfur (mainly in liquid and gaseous forms), when sulfur enters the online sulfur ratio meter in liquid form, it is very easy to block the pipeline and pollute the detection room of the sulfur ratio meter, which increases the engineering cost. maintenance and cost of measurement. [0003] In order to solve the impact of liquid sulfur in the tail gas on the measurement, the following technical solutions are usually adopted: [0004] 1. Cold sampling [0005] The basic principle of this method is as follows: firstly cool down the sample gas (a U-shaped instrument air condenser is built in the sampling pipeline), ...

Claims

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Application Information

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