Method for preparing composite hydrate accelerant
A hydrate accelerator and composite technology, applied in mechanical equipment, fixed-capacity gas storage tanks, gas/liquid distribution and storage, etc., can solve the problems of unsatisfactory, low density of hydrate gas storage, etc., and achieve cost Low energy consumption, increased gas storage capacity, and improved economic benefits
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Embodiment 1
[0033] The selected composite accelerator consists of: kinetic accelerator is cyclopentane CP, accounting for 1.3 to 15.0% by mass of the total solvent, surfactant is 2-butyloctyl sodium sulfate (GC12S), concentration is 0.32×10-3 ~9.5×10 - 3 mol / L (see Table 2). The experimental steps are the same as above. The temperature is 2.1-6.5°C, and the pressure is 0.65-2.4Mpa.
[0034] Table 1 Example 1 System Accelerator Preparation Concentration
[0035]
[0036] Under the above conditions, it is found through experiments that the induction time of hydrate formation is 4-19 minutes; the gas storage density is 163m 3 / m 3 above.
Embodiment 2
[0038] The selected composite accelerator consists of: the kinetic accelerator is methylcyclohexane, accounting for 1.3 to 15.0% of the water contained in the mass percentage, and the surfactant is 2-butyloctyl sodium sulfate (GC12S) , with a concentration of 0.32×10 -3 ~9.5×10 -3 mol / L (see Table 2). Sodium chloride (Nacl) with a mass percent content of 0.02-0.78% is added, and the experimental procedure is the same as above. The results show that the temperature is 2.3-5.3°C and the pressure is 0.62-3.2Mpa.
[0039] Table 2 Example two system accelerator preparation concentration
[0040]
[0041] Under the above conditions, it is found through experiments that the induction time of hydrate formation is 2-15 minutes; the gas storage density is 167m 3 / m 3 above.
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