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Hydrate promoter and preparation method thereof

A hydrate accelerator and solvent technology, applied in chemical instruments and methods, other chemical processes, chemical/physical processes, etc., can solve the problems of unsatisfactory, low hydrate gas storage density, etc., and achieve low cost, storage and storage. The effect of increased air volume and reduced conditions

Active Publication Date: 2015-08-26
邳州市博睿投资管理有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although this type of surfactant can accelerate the hydrate formation rate, it is still unsatisfactory, and the gas storage density of hydrate is not high.

Method used

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  • Hydrate promoter and preparation method thereof
  • Hydrate promoter and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The compound accelerator FH1 selected consists of: 3% by mass percentage of cocamidopropyl betaine, 1.2% by mass percentage of dimethylsiloxane, 0.2% by mass percentage of nonionic Fluoride and distilled water. Stir at 65°C for 35 minutes to prepare a hydrate accelerator. The experiment was done with methane gas at a temperature of 4.5°C, and the experimental procedure was the same as above. The experimental results are shown in Table 2.

[0038] Experiment number Mass concentration (wt%) Induction time (min) Phase equilibrium pressure (MPa) 1 0.1 12.6 3.21 2 0.2 12.0 3.14 3 0.3 11.2 2.87 4 0.4 10.0 2.65 5 0.5 9.3 2.43 6 0.6 9.2 2.23

Embodiment 2

[0040] The compound accelerator FH5 selected consists of: 7% by mass percentage of cocamidopropyl betaine, 4.5% by mass percentage of dimethylsiloxane, 1.5% by mass percentage of nonionic Fluoride and distilled water. Stir at 85°C for 35 minutes to prepare a hydrate accelerator. The experiment was done with methane gas at a temperature of 4.5°C, and the experimental procedure was the same as above. The experimental results are shown in Table 3.

[0041] Experiment number Mass concentration (wt%) Induction time (min) Phase equilibrium pressure (MPa) 1 0.1 9.6 3.01 2 0.2 9.0 3.05 3 0.3 7.2 2.42 4 0.4 5.7 2.33 5 0.5 4.6 2.32 6 0.6 4.0 2.32

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Abstract

The invention belongs to the technical field of production promotion and utilization of gas hydrates, and particularly relates to a hydrate promoter and a preparation method thereof. The hydrate promoter is prepared by mixing cocamidopropyl betaine, dimethyl siloxane and a nonionic fluorinated surfactant which are used as additives with deionized water at the temperature ranging from 65 DEG C to 85 DEG C for 30-40 min; the solvent comprises, in percentage by mass, 3-7% of the cocamidopropyl betaine, 1.2-4.5% of the dimethyl siloxane, 0.2-1.5% of the nonionic fluorinated surfactant and the balance of the deionized water. The hydrate promoter can be widely applied to fields of gas hydrate storage and transportation technologies, gas hydrate separation technologies, sea water desalination and the like; the hydrate promoter is low in cost and low in consumption, hydrate generation conditions are reduced, time is shortened, the gas storage capacity is improved, and the economic benefit of hydrate production is effectively increased.

Description

technical field [0001] The invention relates to the technical field of gas hydrate production promotion and utilization, in particular to a preparation method of a composite accelerator for accelerating the formation of gas hydrate. Background technique [0002] Gas hydrate technology involves a wide range of fields. It not only develops rapidly in the fields of energy and environmental protection, but also has made significant progress in other fields, such as solid-state transportation and storage of natural gas, natural gas hydrate as vehicle fuel, and gas hydrate based on the formation of hydrate. New separation technologies (seawater desalination technology, concentration of organic aqueous solution, separation of gas mixtures and near-critical and supercritical extraction, etc.), as well as the fields of hydrate bioengineering and new materials, etc. However, the gas hydrate technology is affected by factors such as harsh formation conditions, long induction time, sl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/00C09K3/00C09K23/00
Inventor 王树立常凯饶永超康甜甜文创杨燕郑亚星代文杰戴源刘倩
Owner 邳州市博睿投资管理有限公司
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