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Clathrates for gas storage

A gas hydrate, gas bag technology, applied in gas/liquid distribution and storage, gas fuel, fixed capacity gas storage tanks, etc., which can solve the limitations of kinetic and practical considerations, poor feasibility of clathrates, gas storage applications No cost-efficiency issues

Inactive Publication Date: 2011-07-06
UNIV OF LIVERPOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the formation of clathrate structures is unpredictable and presents a significant obstacle to industrial application
[0009] So far, the viability of clathrates as a gas storage method has been severely limited by poor kinetics and practical considerations
Common methods used to increase the kinetics of clathrate formation (such as high pressure, vigorous mechanical agitation, surfactants, or micron-sized crushed / sieved ice particles) are achievable in the laboratory, but in real gas Neither cost effective nor practical for storage applications

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0068] Example 1 - Synthesis of dry water

[0069] Full details of the dry water preparation procedure can be found elsewhere (Binks, B.P., Murakami, R. Nat. Mater. 2006, 5, 865-869). A sample of hydrophobic silica nanoparticles (H18) was provided by Wacker-Chemie. To prepare dry water powder, deionized water (95ml) was poured into a blender (Breville, Glass Jug Blender (Breville, Glass Jug Blender), BL18, 1.5 liters, with lid) and H18 (5g) was added to the water . Mixing was performed for 90 s at three different speeds (speed 1: average 16,450 rpm; speed 2: average 17,500 rpm; speed 3: average 19,000 rpm). The material produced was like a free-flowing "dry" white powder that could be poured from one container into another (see figure 2 ). The morphology of dry water was observed with an Olympus CX41RF microscope. Photographs were taken with a C-5060 digital camera (Olympus).

[0070] figure 1 A schematic is shown of a dry water droplet coated with small hydrophobic ...

example 2

[0071] Example 2 - Apparatus for gas hydrate formation

[0072] In order to carry out the gas absorption kinetics experiment, 20.0g of dry water (or made of glass beads (19.5cm 3 ) or unmixed water and silica (19.5cm 3 +0.5cm 3 ) in any composition of the control sample) loaded into the 68.0cm 3 High-pressure stainless steel reactor (New Ways of Analytics, Lorrach, Germany). The temperature of the coolant in the circulating water bath was controlled by a programmable thermodynamic circulator (HAAKE Phoenix II P2, Thermo Electron Corporation). The temperature of the composition in the high pressure reactor was measured with a type K thermocouple (Cole-Parmer, -250-400°C). Gas pressure was monitored with a high precision pressure transmitter (Cole Palmer, 0-3000 psia). Both thermocouples and transmitters were connected to a digital universal input panel meter (Cole Palmer) that communicated with the computer. Before the experiment, the reactor was slowly flushed three ti...

example 3

[0073] Example 3 (comparative) - control experiment

[0074] Figure 5 Control experiments are shown: in CH 4 P-T diagram of cooling and heating under pressure (temperature ramp: 2.0K / h): (a) and (b) 19.5cm 3 Glass beads; (c) and (d) unstirred mixture of water (19 g) and hydrophobic silica nanoparticles H18 (1 g). For the glass bead control experiments, the system approximated ideal gas behavior and no leaks were detected. Although a small pressure inflection change (<0.1 MPa) was observed, the behavior was similar to the unmixed water / silica control. This is most likely due to the very small extent of MGH formation at the gas-liquid interface.

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Abstract

This invention relates to a gas hydrate (often referred to as a clathrate) comprising a water- in-gas emulsion (egdrywater (DW)) and an enclathrated exogenous gas such as for example methane, natural gas, hydrogen orcarbon dioxide.

Description

technical field [0001] The present invention relates to gas hydrates (commonly referred to as clathrates), including water-in-gas emulsions (such as dry water (DW)) and clathrated exogenous gases such as methane, natural gas, hydrogen or carbon dioxide . Background technique [0002] Natural gas, methane and other gases are important sources of energy for, for example, vehicle systems. The cost-effective application and use of these gases is largely dependent on efficient, economical and user-friendly methods of storage, transport and release. Efficient capture of specific gases from exhaust streams (eg carbon dioxide) is also important. [0003] The safe and economical storage and transportation of natural gas, primarily methane, is an important societal challenge. The US Department of Energy has set a CH of 180v / v (STP) 4 storage capacity target. Technologies based on the use of hydrogen, for example in fuel cells, are likely to be of increasing value in the future. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L3/00F17C11/00F25J1/00
CPCF17C11/007Y02E60/321C10L3/06C10L3/108Y02E60/32
Inventor 安德鲁·库珀大卫·亚当斯克里斯托弗·布雷王伟新
Owner UNIV OF LIVERPOOL
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