Catalyst chemical determination method for total hydrogen sulfide content in liquid sulfur

A technology of liquid sulfur and catalyst, which is applied in the direction of chemical analysis by catalysis, can solve the problems of unguaranteed accuracy, time-consuming and labor-intensive, etc., and achieves the effect of convenient operation and simple experimental device.

Active Publication Date: 2020-07-31
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Whether the data is reliable or not needs to be verified by field tests, which is time-consuming and labor-intensive, and the accuracy cannot be guaranteed

Method used

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  • Catalyst chemical determination method for total hydrogen sulfide content in liquid sulfur
  • Catalyst chemical determination method for total hydrogen sulfide content in liquid sulfur
  • Catalyst chemical determination method for total hydrogen sulfide content in liquid sulfur

Examples

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Embodiment 1

[0033] The present embodiment provides a catalyst chemical determination method 100 of total hydrogen sulfide content in liquid sulfur, such as figure 1 shown, including:

[0034] Step 110, taking a liquid sulfur sample.

[0035] Step 120, mixing and heating the catalyst and the liquid sulfur sample to obtain a liquid mixture.

[0036] Step 130, purging the surface of the liquid mixture with nitrogen, and performing iodometric measurement on the gas purged by nitrogen to obtain the total hydrogen sulfide content.

[0037] After testing, a certain proportion of catalyst was added to the liquid sulfur sample, and after nitrogen purging, the purged sample was taken to an infrared instrument for analysis, and it was found that the peaks of hydrogen sulfide and polyhydrogen sulfide in the infrared spectrum disappeared. The result is shown as zero (the data are shown in Table 1 below), so it can be known that the hydrogen sulfide and hydrogen polysulfide in the liquid sulfur are a...

Embodiment 2

[0044] The present embodiment provides a catalyst chemical determination method 100 of total hydrogen sulfide content in liquid sulfur, such as figure 1 shown, including:

[0045] Step 110, taking a liquid sulfur sample.

[0046] Step 120, mixing and heating the catalyst and the liquid sulfur sample to obtain a liquid mixture.

[0047] On the basis of Example 1, such as figure 2 As shown, step 120 specifically includes:

[0048] Step 121, adding liquid sulfur sample into the container containing the catalyst.

[0049] Step 122, heating the container until the catalyst and the liquid sulfur sample are evenly mixed to obtain a liquid mixture, and the temperature of the liquid mixture reaches a preset temperature.

[0050] Step 130, purging the surface of the liquid mixture with nitrogen, and performing iodometric measurement on the gas purged by nitrogen to obtain the total hydrogen sulfide content.

[0051] In this embodiment, the catalyst is placed at the bottom of the con...

Embodiment 3

[0053] The present embodiment provides a catalyst chemical determination method 100 of total hydrogen sulfide content in liquid sulfur, such as figure 1 shown, including:

[0054] Step 110, taking a liquid sulfur sample.

[0055] Step 120, mixing and heating the catalyst and the liquid sulfur sample to obtain a liquid mixture.

[0056] like figure 2 As shown, step 120 specifically includes:

[0057] Step 121, adding liquid sulfur sample into the container containing the catalyst.

[0058] Step 122, heating the container until the catalyst and the liquid sulfur sample are evenly mixed to obtain a liquid mixture, and the temperature of the liquid mixture reaches a preset temperature.

[0059] Step 130, purging the surface of the liquid mixture with nitrogen, and performing iodometric measurement on the gas purged by nitrogen to obtain the total hydrogen sulfide content.

[0060] On the basis of Example 2, the preset temperature above is the temperature of the mother liquor...

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Abstract

The invention provides a catalyst chemical determination method for total hydrogen sulfide content in liquid sulfur. The method comprises the following steps: (1) mixing a catalyst and a liquid sulfursample, and heating to a preset temperature to obtain a liquid mixture; the catalyst comprising picric acid; (2) performing nitrogen purging on the surface of a liquid mixture, performing iodometry determination on gas obtained through nitrogen purging, and obtaining the total hydrogen sulfide content in liquid sulfur. The method comprises the following steps: adding a catalyst into a liquid sulfur sample and uniformly mixing; then, under the catalytic action of a catalyst, the equilibrium reaction in the liquid sulfur sample being broken; moving in the direction of generating hydrogen sulfide and hydrogen polysulfide; hydrogen sulfide and hydrogen polysulfide continuously overflowing from the surface of the liquid sulfur sample through nitrogen purging, so that the total hydrogen sulfidecontent in the liquid sulfur sample can be obtained. Experimental devices used in the method are simple, the operation is convenient and rapid, and the total hydrogen sulfide content in the liquid sulfur sample can be effectively and accurately measured.

Description

technical field [0001] The invention relates to a catalyst chemical determination method for total hydrogen sulfide content in liquid sulfur, which belongs to the technical field of component content determination. Background technique [0002] The determination of residual hydrogen sulfide content in industrial sulfur plays an important role in environmental protection. The existing analysis methods for residual hydrogen sulfide content in industrial sulfur at home and abroad include potentiometric method, chemical method and Fourier transform infrared spectroscopy (FTIR) method. Among them, the potentiometric method requires the use of flammable and toxic reagents, and the analysis results are easily interfered by other components; the chemical method is a classic analysis method, which is adopted by the British AMOCO company and the American SNPA company; the Fourier transform infrared spectroscopy is developed by Developed by the Canadian Albert Sulfur Research Institute...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/10
CPCG01N31/10
Inventor 唐纯洁周理常宏岗涂振权
Owner PETROCHINA CO LTD
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