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A method for storing and transporting natural gas based on fungus-enhanced hydrate method

A technology of hydrate and natural gas, which is applied in the field of storage and transportation of natural gas based on the natural porous material-enhanced hydrate method, which can solve problems such as poor cycle storage performance, expensive accelerators, and increased gas storage costs

Active Publication Date: 2021-06-08
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these accelerators are usually expensive, thus greatly increasing the cost of gas storage
In addition, Fan Shuanshi and others introduced a kind of "dry water" prepared by using hydrophobic silica particles and surfactants in "Gas Hydrate Formation Accelerator and Its Preparation and Application" (CN102784604A), which can be realized in a static system. The rapid formation of hydrates and high gas storage capacity, the disadvantage is that the destruction of the "dry water" structure during the hydrate decomposition process leads to poor cycle storage performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for storing and transporting natural gas based on the agaric-enhanced hydrate method comprises the following steps:

[0025] S1, dried fungus inhales surfactant solution

[0026] Soak 3 grams of dried fungus in 200 milliliters of SDS solution with a concentration of 500 ppm at room temperature for 4 hours, then take out the soaked fungus and drain the surface water to obtain surfactant-inhaled fungus.

[0027] S2. Put the fungus rich in surfactant into the hydrate generation equipment

[0028] Put the fungus that inhaled the surfactant into the reaction container, seal the reaction container and connect it to the gas pipeline, vacuumize the reaction container and the pipeline for 10 minutes to make the vacuum degree reach 0.1MPa, and place the reaction container at a constant temperature of 0°C until the temperature in the container stabilizes.

[0029] S3, Hydrate formation under low temperature and high pressure conditions

[0030] Inject methane gas to 9 ...

Embodiment 2

[0032] A method for storing and transporting natural gas based on the agaric-enhanced hydrate method comprises the following steps:

[0033] S1, dried fungus inhales surfactant solution

[0034] Soak 3 grams of dried fungus in 200 milliliters of SDS solution with a concentration of 300 ppm at room temperature for 4 hours, then take out the soaked fungus and drain the surface water to obtain surfactant-inhaled fungus.

[0035] S2. Put the fungus rich in surfactant into the hydrate generation equipment

[0036] Put the fungus that inhaled the surfactant into the reaction container, seal the reaction container and connect it to the gas pipeline, vacuumize the reaction container and the pipeline for 10 minutes to make the vacuum degree reach 0.1MPa, and place the reaction container at a constant temperature of 0°C until the temperature in the container stabilizes.

[0037] S3, Hydrate formation under low temperature and high pressure conditions

[0038] Inject methane gas to 9 ...

Embodiment 3

[0040] A method for storing and transporting natural gas based on the agaric-enhanced hydrate method comprises the following steps:

[0041] S1, dried fungus inhales surfactant solution

[0042] Soak 3 grams of dried fungus in 200 milliliters of SDS solution with a concentration of 100 ppm at room temperature for 4 hours, then take out the soaked fungus and drain the surface water to obtain surfactant-inhaled fungus.

[0043] S2. Put the fungus rich in surfactant into the hydrate generation equipment

[0044]Put the fungus that inhaled the surfactant into the reaction container, seal the reaction container and connect it to the gas pipeline, vacuumize the reaction container and the pipeline for 10 minutes to make the vacuum degree reach 0.1MPa, and place the reaction container at a constant temperature of 0°C until the temperature in the container stabilizes.

[0045] S3, Hydrate formation under low temperature and high pressure conditions

[0046] Inject methane gas to 9 M...

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Abstract

The invention discloses a method for storing and transporting natural gas based on the agaric-enhanced hydrate method. Dried auricularia is used to inhale a surfactant to form hydrate under low-temperature and high-pressure reaction conditions. The induction time of the natural gas storage and transportation method is 3-48 minutes, the volume storage capacity is 83-101v / v, and the cycle storage retention rate is 87.6-89.5%. The present invention uses the fungus to inhale the surfactant solution, the rich porous structure of the fungus increases the gas-liquid contact area, significantly shortens the induction time of the hydration reaction, and plays a positive role in accelerating the formation process of hydrates and increasing the gas storage capacity. enhancement. Because the fungus used in the invention has good structural toughness, high cycle stability for storing natural gas is realized, and the problem of foam generated by surfactants during the hydrate decomposition process is effectively solved. The method for storing and transporting natural gas based on the agaric-enhanced hydrate method of the present invention has the advantages of simple process, rapid hydration reaction, high cycle stability, low production cost, and the like.

Description

technical field [0001] The invention belongs to the application field of natural gas storage and gas hydrate generation and utilization technology, and relates to a method for storing and transporting natural gas based on a hydrate method enhanced by natural porous materials. Background technique [0002] As the cleanest fossil fuel, natural gas accounts for an increasing proportion of primary energy consumption, and the demand for developing safer and more efficient natural gas storage and transportation technologies is increasing. The shortcomings of traditional storage and transportation methods such as liquefied natural gas and compressed natural gas have harsh production conditions, expensive equipment, and high safety risks, which limit their application in large-scale storage and transportation of natural gas. Now, the storage and transportation of natural gas in the form of hydrates has attracted extensive attention from the scientific and industrial circles. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J3/00
CPCC10L3/108
Inventor 宋永臣凌铮石常瑞周航赵佳飞杨明军杨磊李洋辉
Owner DALIAN UNIV OF TECH
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