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Liquid absorbent for removing hydrogen sulfide in oil gas

A technology of liquid absorbent and hydrogen sulfide, applied in chemical instruments and methods, separation of dispersed particles, separation methods, etc., can solve the problem of no oxazolidine and its derivatives, and achieve the prevention of air pollution, absorption rate and efficiency Improvement, good water solubility effect

Active Publication Date: 2015-11-18
SHENGLI OILFIELD SHENGLI CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no relevant literature report on the application of oxazolidine and its derivatives in hydrogen sulfide absorption treatment in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The absorbent is composed of 1,3,5-tris(2-hydroxyethyl)-hexahydro-s-triazine and oxazolidine in a mass ratio of 50:50. The results are shown in Table 1.

[0028] Table 1 Mass ratio 50:50 hydrogen sulfide absorption effect

[0029] Absorption time / min Hydrogen sulfide concentration / mg / L 0 1123 10 564 20 345 30 120 35 37 40 0

Embodiment 2

[0031] The absorbent is composed of 1,3,5-tris(2-hydroxyethyl)-hexahydro-s-triazine and oxazolidine in a mass ratio of 30:70. The results are shown in Table 2.

[0032] Table 2 Mass ratio 30:70 hydrogen sulfide absorption effect

[0033] Absorption time / min Hydrogen sulfide concentration / mg / L 0 1151 10 483 20 322 30 98 35 11 37 0

Embodiment 3

[0035] The absorbent is composed of 1,3-bis(2-hydroxyethyl)-5-methyl-hexahydrotriazine and oxazolidine in a mass ratio of 40:60. The results are shown in Table 3.

[0036] Table 3 Mass ratio 40:60 hydrogen sulfide absorption effect

[0037] Absorption time / min Hydrogen sulfide concentration / mg / L 0 1146 10 544 20 437 30 146 35 59 40 25 43 0

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PUM

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Abstract

The invention provides liquid absorbent for removing hydrogen sulfide in oil gas. The liquid absorbent comprises two types of substance, one is six-hydrogen triazine compounds, and the other one is pbo alkanes compounds. Both the six-hydrogen triazine compounds and the pbo alkanes compounds have absorptive action on hydrogen sulfide, present a homogenous phase after being mixed according to a certain proportion and has extremely water solubility; compared with an existing product, the rate of absorption is increased, and absorption efficiency is improved. By means of the hydrogen sulfide absorbent, corrosion, caused by hydrogen sulfide, to metal equipment and pipes can be relieved, working personnel is protected against harm of hydrogen sulfide poisonous gas, and the situation that the environment is polluted by hydrogen sulfide is prevented.

Description

technical field [0001] The invention belongs to the field of petroleum and natural gas and petrochemical industry, in particular to a treatment agent mainly used for the absorption and transfer of hydrogen sulfide in the crude oil and natural gas industries. Background technique [0002] At present, hydrogen sulfide liquid absorbent has many kinds of patents abroad, and there are also many kinds of products at home and abroad that are being widely used in various oil fields, especially drilling platforms. Liquid absorbents based on 1,3,5-tris(2-hydroxyethyl)-hexahydro-s-triazine are the most popular products. As a liquid desulfurizer, triazine compounds are mainly suitable for H 2 Oil and gas fields with low S content, because they can be directly injected into oil and gas mixed transportation pipelines, are easy to operate and low in cost, and are often used for natural gas desulfurization on offshore oil platforms. Natural gas production bases have been established in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/14
Inventor 徐磊王宗廷刘吉东李国森刘兆增陈兆龙程紧紧王勇项鹏飞
Owner SHENGLI OILFIELD SHENGLI CHEM
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