Remover and removal method for sulfuretted hydrogen in low-water cut crude oil associated gas

A technology for hydrogen sulfide and removing agent, applied in chemical instruments and methods, separation methods, gas fuels, etc., can solve the problems of high space cost and other problems, and achieve the effects of high removal efficiency, low dosage and irreversible reaction.

Inactive Publication Date: 2015-06-17
E TECH ENERGY TECH DEV CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing above-mentioned professional technologies are widely used in onshore oilfields or refining and chemical enterprises, but there are great limitations in the field promotion of offshore oilfields with limited space, process restrictions, strict marine environmental protection requirements, and high-cost logistics and transportation. sex and related technical issues

Method used

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  • Remover and removal method for sulfuretted hydrogen in low-water cut crude oil associated gas
  • Remover and removal method for sulfuretted hydrogen in low-water cut crude oil associated gas
  • Remover and removal method for sulfuretted hydrogen in low-water cut crude oil associated gas

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A hydrogen sulfide removal agent in low-water crude oil associated gas is a hydroxyethyl polymer, and the weight percentage of its components is 85% of hydroxyethyl hexahydro-s-triazine, 6% of ethylene glycol, and di Methylformamide 9%. The hydrogen sulfide remover used is prepared by mechanically mixing hydroxyethyl hexahydro-s-triazine, ethylene glycol and dimethylformamide.

Embodiment 2

[0031] A method for removing hydrogen sulfide in low-water crude oil associated gas, which is characterized in that a hydrogen sulfide remover is added to the inlet of the crude oil transport pump on the platform, the hydrogen sulfide remover is a hydroxyethyl polymer, and the hydrogen sulfide remover is The hydroxyethyl polymer contains 80% of hydroxyethylhexahydro-s-triazine, 10% of ethylene glycol and 6% of dimethylformamide in weight percent of each component. The hydrogen sulfide removal agent is added in an amount to achieve a concentration of 50-300ppm.

Embodiment 3

[0033] Preparation and application of hydrogen sulfide removal agent in crude oil with low water content

[0034] Component distribution (by weight): ethylene glycol 5%, hydroxyethylhexahydro-s-triazine 90%, dimethylformamide 5%.

[0035] Preparation method: mechanically mix according to the formula

[0036] Operation object: crude oil with low water content on offshore platforms

[0037] Operation method: Add hydrogen sulfide removers with different concentrations into the sampler, collect 500ml of oil-water mixture (crude oil contains 3% water) at the sampling end of crude oil output, oscillate and shake well, and after standing for 1 minute, use a gas sampler to analyze the associated hydrogen sulfide. The concentration of hydrogen sulfide in the gas.

[0038] The results are shown in Table 1.

[0039] Table 1 Desulfurization effects of different concentrations of hydrogen sulfide removal agents

[0040]

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Abstract

The invention relates to a remover and a removal method for sulfuretted hydrogen in low-water cut crude oil associated gas, and belongs to the technical field of the oil field chemicals. The remover for the sulfuretted hydrogen in the low-water cut crude oil associated gas is characterized in that the sulfuretted hydrogen remover is an ethoxyl containing polymer and comprises the following components by weight percentage: 80%-90% of hexahydro-1,3,5-tris(hydroxyethyl)-s-triazine, 5%-10% of ethylene glycol and 5%-10% of dimethylformamide. The removal method for the sulfuretted hydrogen in the low-water cut crude oil associated gas is characterized in that the sulfuretted hydrogen remover is added to the inlet of a platform crude oil efflux pump. The remover provided by the invention has the advantages of simple components, convenience in preparation, fastness and high efficiency, low cost, strong pertinence, high sulfuretted hydrogen removal efficiency, low dosage, no influence on the quality of the crude oil, good safety and environmental protection performance and the like.

Description

technical field [0001] The invention belongs to the technical field of oilfield chemicals, and in particular relates to a hydrogen sulfide remover and a removal method in low water content crude oil associated gas. Background technique [0002] At present, the high concentration of hydrogen sulfide produced in the process of crude oil exploitation in offshore oil fields will not only have a health impact on the human body, but also cause corrosion hazards to platform facilities and pipelines. [0003] At home and abroad, for hydrogen sulfide in natural gas, oilfield associated gas, refinery gas and other process gas mixtures, the removal technology generally adopts dry desulfurization and wet desulfurization, including desulfurization process technology and supergravity technology. The existing above-mentioned professional technologies are widely used in land oilfields or refining and chemical enterprises, but there are great limitations in the field application of offshore ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/52B01D53/48C10L3/10
Inventor 万钢向安赵秀兰陈德辉冯宇
Owner E TECH ENERGY TECH DEV CORP
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