Deep dehydrating system device for natural gas and dehydrating method
A technology of deep dehydration and system installation, applied in separation methods, chemical instruments and methods, gas fuels, etc., can solve the problems of low purity of triethylene glycol and low dehydration depth of natural gas, achieve wide application range, reduce water vapor content, etc. The effect of pressure and cost reduction
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[0075] Example 1
[0076] At the same time, the negative pressure enhanced regeneration and regeneration gas enhanced regeneration methods are used, and the above-mentioned device and process are used to deeply remove water in natural gas with triethylene glycol: open the third shut-off valve 13 and the fourth shut-off valve 19, and close the fifth shut-off valve 20.
[0077] The pressure of natural gas entering the system is 7MPa, the volume ratio of regeneration gas consumption to product gas is 1:2000, the volume ratio of TEG lean liquid to natural gas feed gas is 1:10000, and the supergravity level of the No. 1 supergravity machine is 200, the supergravity level of the second supergravity machine is 200, the vacuum degree is 80kPa, the reboiler temperature is 190℃, and the condenser temperature is 30℃. Under this technological condition, the purity of the lean triethylene glycol after regeneration reaches about 99.99wt%, and the outlet natural gas water dew point reaches below ...
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[0078] Example 2
[0079] As described in Example 1, with other conditions unchanged, the supergravity level of the first supergravity machine is adjusted to 100. After this process, the purity of the lean triethylene glycol solution after regeneration reaches about 99.99wt%, and the natural gas water dew point reaches Below -48℃.
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[0080] Example 3
[0081] As described in Example 1, with other conditions unchanged, the supergravity level of the first supergravity machine is adjusted to 20. After this process, the purity of the lean triethylene glycol solution after regeneration reaches about 99.99wt%, and the natural gas water dew point reaches Below -28°C.
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