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Oil-gas-water three-phase hydrogen sulfide absorbent and preparation method thereof

A hydrogen sulfide, oil-gas-water technology, applied in chemical instruments and methods, separation methods, gas fuels, etc., can solve the problems of incomplete hydrogen sulfide reaction and low desulfurization efficiency, achieve good complexation and adsorption capacity, and improve desulfurization efficiency. Effect

Active Publication Date: 2018-10-16
TIANJIN XINXIANG PETROLEUM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

1,3,5-tris(2-hydroxyethyl)-hexahydro-s-triazine has the characteristics of high absorption efficiency, fast speed, and no adverse effect on oil-water separation when used for hydrogen sulfide removal, and has been widely accepted. However, the triazine desulfurizer has the problems of easy degradation during storage, incomplete reaction with hydrogen sulfide, and low desulfurization efficiency in crude oil

Method used

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  • Oil-gas-water three-phase hydrogen sulfide absorbent and preparation method thereof
  • Oil-gas-water three-phase hydrogen sulfide absorbent and preparation method thereof
  • Oil-gas-water three-phase hydrogen sulfide absorbent and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Add 80g of water, 12g of 1227, 80g of methanol, 90g of isopropanol, 1g of Span-85 into the mixing tank, and stir for half an hour; add 15g of chitosan and stir for half an hour; add 80g of polyaspartic acid sodium salt, and stir for 20 minutes; add 5g of s-triazine degradation inhibitor ethoxylated isotridecanol and stir for 10 minutes; add 380g of 1,3,5-tris(2-hydroxyethyl)-hexahydro-s-triazine, dissolve it completely and add to In the reaction kettle, heat to 30°C, stir and keep warm for 4 hours to obtain the finished oil-gas-water three-phase hydrogen sulfide absorbent.

Embodiment 2

[0022] Add 120g of water, 25g of 1227, 110g of methanol, 130g of isopropanol, 3g of Span-85 into the stirring tank, and stir for half an hour; add 30g of chitosan and stir for half an hour; add 160g of polyaspartic acid sodium salt, and stir for 20 minutes; add 20g of s-triazine degradation inhibitor ethoxylated isotridecanol and stir for 10 minutes; add 450g of 1,3,5-tris(2-hydroxyethyl)-hexahydro-s-triazine, dissolve it completely and add to In the reaction kettle, heat to 30°C, stir and keep warm for 4 hours to obtain the finished oil-gas-water three-phase hydrogen sulfide absorbent.

Embodiment 3

[0024] Add 100g of water, 20g of 1227, 100g of methanol, 100g of isopropanol, 2g of Span-85 into the stirring tank, and stir for half an hour; add 20g of chitosan and stir for half an hour; add 100g of polyaspartic acid sodium salt, and stir for 20 minutes; add 10g of s-triazine degradation inhibitor ethoxylated isotridecanol and stir for 10 minutes; add 400g of 1,3,5-tris(2-hydroxyethyl)-hexahydro-s-triazine, dissolve completely and add to In the reaction kettle, heat to 30°C, stir and keep warm for 4 hours to obtain the finished oil-gas-water three-phase hydrogen sulfide absorbent.

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Abstract

The invention discloses an oil-gas-water three-phase hydrogen sulfide absorbent and a preparation method thereof. The oil-gas-water three-phase hydrogen sulfide absorbent is applicable to crude oil exploration and natural gas transportation. The hydrogen sulfide absorbent comprises the following components in parts by weight: 38-45 parts of 1,3,5-tri(2-hydroxyethyl hexahydro)-s-triazine, 8-12 parts of water, 0.5-2 parts of a s-triazine degradation inhibitor, 8-16 parts of sodium polyaspartate, 1.5-3 parts of chitosan, 1.2-2.5 parts of 1227, 8-11 parts of methanol, 9-13 parts of isopropanol and0.1-0.3 part of Span-85. The sodium polyaspartate and the chitosan have good complexing and adsorption capabilities for S<2->, hydrogen sulfide can be enriched around 1,3,5-tri(2-hydroxyethyl hexahydro)-s-triazine molecules and thoroughly reacts with the hydrogen sulfide, and the sulfur removal efficiency in the crude oil can be improved. Due to ethoxylation isomerism tridecanol, the problem thatthe 1,3,5-tri(2-hydroxyethyl hexahydro)-s-triazine is liable to degrade can be solved.

Description

technical field [0001] The application relates to an absorbent, in particular to an oil-gas-water three-phase hydrogen sulfide absorbent and a preparation method thereof. Background technique [0002] In oil and gas extraction and transportation, there is no shortage of toxic hydrogen sulfide gas with various concentrations. The existence of hydrogen sulfide not only seriously threatens the safety of production personnel, but also causes serious corrosion to production equipment, leading to safety accidents and increased production costs. This trend will prompt the search for more efficient, cost-effective and environmentally friendly methods of dealing with hydrogen sulfide gas. Due to the advantages of economic cost and space utilization, triazine liquid remover has emerged as the preferred technology for removing low-concentration hydrogen sulfide. 1,3,5-tris(2-hydroxyethyl)-hexahydro-s-triazine has the characteristics of high absorption efficiency, fast speed, and no a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/52B01D53/78C10G29/20C10L3/10
CPCB01D53/52B01D53/78C10G29/20C10G2300/207C10L3/103
Inventor 鲍素领齐占涛吴丹吴振华彭冠儒杜平
Owner TIANJIN XINXIANG PETROLEUM TECH CO LTD
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