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Saponin-containing composite type hydrate anti-agglomerant

A technology of anti-aggregation agent and hydrate, which is applied in the field of hydrate anti-aggregation agent and compound hydrate anti-aggregation agent. Coalescence and other problems, to avoid hydrate coalescence, solve the problem of flow safety guarantee, and achieve the effect of uniform particle distribution

Active Publication Date: 2013-02-13
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned anti-aggregation agent has the characteristics of non-toxicity, economy and environmental protection, good effect, and uniform distribution of hydrate-forming particles. In addition, when the hydrate initially generates hydrate, the formation state is flake-like particles. When the water content is too high, the first formed hydrate will absorb the surrounding free water, making the flake-like particles continue to grow. After the hydrate is completely formed, it will be gradually broken by the rotor, but the formed hydrate is likely to coalesce when the system is not disturbed too much or when it is still, so it is necessary to make further improvements

Method used

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  • Saponin-containing composite type hydrate anti-agglomerant
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  • Saponin-containing composite type hydrate anti-agglomerant

Examples

Experimental program
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Effect test

Embodiment 1

[0073] This embodiment provides a saponin plant extract, which is prepared by the following steps:

[0074] First, select 100g of the saponaria bark (the skin remaining after the fruit is removed from the saccharin sacchari pod), and grind the saponaria bark to powder with a pulverizer to obtain the saponaria powder;

[0075] Pour the saponin powder into the Soxhlet extractor, add 600g of absolute ethanol for 3 hours of extraction to obtain a mixed solution;

[0076] A Buchner funnel was used to suction and filter the mixed liquid, and the filtrate was distilled under reduced pressure using a rotary evaporator until solids precipitated out. The concentrated liquid obtained at this time was a saturated solution (brown liquid), that is, a saponin plant extract.

[0077] According to measurement, in the saponin plant extract extracted in this example, the total saponin content is 21% of the mass of saponin bark, and the effective concentration of saponin in the saponin plant extract is 19...

Embodiment 2

[0079] This embodiment provides a saponin plant extract, which is prepared by the following steps:

[0080] Select 100g of licorice and grind it to powder in a mortar to obtain licorice powder;

[0081] Pour the licorice powder into the flask, add 300g of water to leaching at 70°C for 4 hours, use a Buchner funnel for suction filtration, and again use 300g of water for 4 hours of leaching of the filter residue. Suction filtration is repeated. Filter four times to obtain a mixed liquid, the mixed liquid is the sum of the liquid obtained by the four immersion;

[0082] Filter the mixed liquid, concentrate the filtrate and evaporate the water in it by a vacuum distillation method to obtain the saponin plant extract solid;

[0083] The above-mentioned solid is dissolved in absolute ethanol and then concentrated until the solid is precipitated. The concentrated liquid at this time is the saponin plant extract.

[0084] After measurement, in the saponin plant extract extracted in this exampl...

Embodiment 3

[0086] This embodiment provides a saponin-containing composite hydrate anti-polymerization agent, which is prepared by the following steps:

[0087] The saponin plant extract extracted in Example 1 and the auxiliary anti-polymerization agent Span20 were mixed according to a mass ratio of 3:1 and stirred uniformly to obtain a saponin-containing composite hydrate anti-polymerization agent.

[0088] A visualized transparent sapphire autoclave and supporting system were used to test the hydrate morphology of the anti-polymerization effect of the above-mentioned saponin-containing composite hydrate anti-polymerization agent provided in this embodiment. Among them, the oil-water emulsion of the oil-gas-water mixed transportation system is prepared by 0.5mL deionized water and 9.5mL diesel oil, that is, the volume content of water in the oil-gas-water mixed transportation system is 5% (with water and The total volume of oil is calculated based on the standard), the total amount of anti-po...

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Abstract

The present invention relates to a saponin-containing composite type hydrate anti-agglomerant, which comprises a saponin plant extract and an auxiliary anti-agglomerant. Compared to the existing anti-agglomerant, the saponin-containing composite type hydrate anti-agglomerant of the present invention has the following characteristics that: an initial generation state of a hydrate can be effectively controlled so as to effectively avoid possibly-generated hydrate aggregation when water content is high, such that dynamic control of the hydrate is easily achieved, it is ensured that hydrate crystals exist in an oil-gas-water multiphase mixing transportation pipeline in a small particle form, and accumulation and deposition phenomena can not be generated so as to effectively solve the flow safety assurance problem of the multiphase mixing transportation pipeline; the saponin plant extract in the hydrate anti-agglomerant is a nature plant extract, does not have toxicity, and is easily biodegraded, and the selected raw materials of the auxiliary anti-agglomerant are non-toxic; and the hydrate anti-agglomerant has characteristics of no toxicity, economy, environment protection, good action effect, uniform generated hydrate particle distribution, and the like.

Description

Technical field [0001] The invention relates to a hydrate anti-polymerization agent, in particular to a saponin-containing composite hydrate anti-polymerization agent, belonging to the technical field of oil and gas transportation. Background technique [0002] Gas hydrate is composed of water and some small gas molecules (such as CH 4 , C 2 H 6 , C 3 H 8 ) A non-stoichiometric solid crystalline substance formed under low temperature and high pressure. Gas hydrates usually exist in liquids in solid form. Therefore, the formation of hydrate solids usually affects the production and transportation of oil and gas companies. For example, hydrate solids block pipelines or transportation lines, valves, safety tanks and other devices. Caused production cuts, shutdowns and even pipeline ruptures, resulting in oil and gas leaks polluting the environment. The research of gas hydrate has attracted the attention of many companies, especially some oil and gas companies. [0003] Currently, th...

Claims

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Application Information

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IPC IPC(8): C09K8/524
Inventor 陈光进李文志李清平孙长宇穆亮陈俊
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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