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. Phase and other problems, to achieve the effect of solving the problem of flow safety guarantee, uniform particle distribution, and avoiding hydrate coalescence

Active Publication Date: 2014-11-05
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
Comparison scheme
Effect test

Embodiment 1

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

[0074] First select 100 g of saponin bark (the remaining skin after the saponin pod is removed from the fruit), and grind the saponin bark into powder by using a pulverizer to obtain saponin powder;

[0075] Inject the saponins powder into a Soxhlet extractor, add 600g of absolute ethanol to extract for 3 hours, and obtain a mixed solution;

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

[0077] It is determined that in the saponin plant extract extracted in this embodiment, the total saponin content is 21% of the saponin bark mass, and the saponin effective concentration in the saponin plant extract is 19%.

Embodiment 2

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

[0080] Select 100g of licorice and grind it into powder with 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 to carry out suction filtration, and filter the residue again with 300g of water to leaching for 4 hours, suction filtration, repeated leaching and suction Filter four times to obtain the mixed solution, which is the sum of the liquid obtained by leaching for four times;

[0082] filtering the mixed solution, concentrating the filtrate and evaporating the water therein to dryness by vacuum distillation to obtain a solid saponin plant extract;

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

[0084] It has been dete...

Embodiment 3

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

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

[0088] A visible transparent sapphire high-pressure reactor and supporting system were used to conduct a hydrate form test on the anti-polymerization effect of the above-mentioned saponin-containing composite hydrate anti-polymerization agent provided in this example. Among them, the oil-water emulsion of the oil-gas-water mixed transportation system is prepared from 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% (based on water and The sum of the volumes of the oil is the basis for calculation), the tot...

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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 antipolymerization agent, in particular to a saponin-containing composite hydrate antipolymerization agent, which belongs to the technical field of oil and gas transportation. Background technique [0002] Gas hydrate is a kind of water and some gas small molecules (such as: CH 4 , C 2 h 6 , C 3 h 8 ) A nonstoichiometric solid crystalline substance formed at low temperature and high pressure. Gas hydrates usually exist in liquid in the form of solids, so the formation of hydrate solids usually affects the production and transportation of oil and gas companies, such as hydrate solids block pipelines or transportation pipelines, valves, safety tanks and other devices, Cause production reduction, stop production or even pipeline rupture, resulting in oil and gas leakage and pollution of the environment. The research on gas hydrate has attracted the attention of many companies, especially some oil and gas companies....

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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