Accelerant for generating gas hydrate

A gas hydrate and accelerator technology, applied in the field of accelerators, can solve the problems of high energy consumption, accelerated local reaction heat, etc., and achieve the effects of wide temperature range, shortened nucleation time, and improved production efficiency

A gas hydrate and accelerator technology, applied in the field of accelerators, can solve the problems of high energy consumption, accelerated local reaction heat, etc., and achieve the effects of wide temperature range, shortened nucleation time, and improved production efficiency

CN103962078AActive Publication Date: 2014-08-06南通东湖国际商务服务有限公司
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  • Accelerant for generating gas hydrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Based on the total mass of 1000g, use an electronic balance to weigh 0.5g of nano-activated carbon, 0.1g of alkyl diphenyl ether disulfonate surfactant and 999.4mL of distilled water at the ratio of 0.05%, 0.01%, and 99.94% respectively; The nano activated carbon powder of g is dissolved in the distilled water of 999.4mL, and stirs 15min with the rotating speed of 500rpm with magnetic stirrer, then adds the alkyl diphenyl ether disulfonate surfactant solid of 0.1g and continues stirring, continues 30min, finally The stirred liquid is ultrasonically dispersed.

Embodiment 2

[0022] Based on the total mass of 1000g, use an electronic balance to weigh 1.5g of nano-activated carbon, 0.8g of alkyl diphenyl ether disulfonate surfactant and 997.7mL of distilled water at the ratio of 0.15%, 0.08%, and 99.77% respectively; The nano activated carbon powder of g is dissolved in the distilled water of 997.7mL, and stirs 15min with the rotating speed of 500rpm with magnetic stirrer, then adds the alkyl diphenyl ether disulfonate surfactant solid of 0.8g and continues stirring, continues 30min, finally The stirred liquid is ultrasonically dispersed.

Embodiment 3

[0024] Based on the total mass of 1000g, use an electronic balance to weigh 1.0g of nano-activated carbon, 0.2g of alkyl diphenyl ether disulfonate surfactant and 998.8mL of distilled water at the ratio of 0.1%, 0.02%, and 99.88% respectively; The nano activated carbon powder of g is dissolved in the distilled water of 998.8mL, and stirs 15min with the rotating speed of 500rpm with magnetic stirrer, then adds the alkyl diphenyl ether disulfonate surfactant solid of 0.2g and continues stirring, continues 30min, finally The stirred liquid is ultrasonically dispersed.

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Abstract

The invention relates to a natural gas hydrate, and particularly to an accelerant for strengthening the generation of a gas hydrate. The accelerant for generating the gas hydrate, provided by the invention, is prepared by compounding of a novel anion gemini surfactant and solid activated carbon particles with a strong heat transmission effect at a certain mass ratio; a liquid mixture is formed after the high-speed mechanical agitation and the ultrasonic dispersion are conducted on the reagent, and the essence is that solid particles with a high heat-conducting property are wrapped in the gemini surfactant, so that nanometer solid particles cannot be agglomerated easily, and the mixing solution with uniformly dispersed solutes is formed, and the mixing solution is free of sediment; the application temperature ranges from 0 DEG C to 10 DEG C, the pressure ranges from 0 MPa to 12 MPa, and the time of hydrate generation induction period ranges from 1 min to 3 min; compared with the pure water system, the generation speed rate of the hydrate is increased by 140%-200%.

Description

technical field [0001] The invention relates to natural gas hydrate, in particular to an accelerator capable of strengthening the formation of gas hydrate. Background technique [0002] Gas hydrate refers to the formation of a non-stoichiometric clathrate solid compound through a quasi-chemical reaction between gas molecules and water molecules under certain high pressure and low temperature conditions; the formation process of hydrate is a process accompanied by material transfer and energy change , the strengthening of hydrate formation can be carried out from two aspects: traditional mechanical strengthening methods such as stirring, spraying, and bubbling; The addition of accelerators, including thermodynamic accelerators and kinetic accelerators, is mainly to enhance the heat and mass transfer at the gas-liquid interface; as a working fluid with high thermal conductivity and heat transfer, nanofluid has High surface activity and large specific surface area have been pr...

Claims

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Application Information

Patent Timeline
06 Aug 2014
Publication
CN103962078A
IPC
B01J19/00; B01J3/00; C10L3/08
Inventors
周诗岽; 赵苗苗