1.Technical requirements The process of the TEG ( triethylene glycol dehydration equipment ) must comply with the relevant national standards and specifications;  Equipment design pressure: 1320 psig; Skid-mounted gas purifying plant, the equipment skid process flow is smooth, the equipment layout is reasonable, and there is enough space for production operation and maintenance; Operation for 330 days per years, and the rest for maintenance; The tray material of the tower shall be SS 316 or any material suitable for corrosion.  Design Level #600,  Device design temperature: 200 degrees Fahrenheit.  Consider high CO2 where corrosion may occur.  Amine strippers and other equipment susceptible to corrosion must be internally coated. Rotating equipment should be from a reliable manufacturer. 2. Process technology description The saturated wet natural gas passes through the filter separator to separate the droplets of 5 μm and above, and then enters the gas-liquid separator of the dehydration device to separate the free liquid. The separated gas enters the absorption section through the gas rising pipe of the absorption tower. The regenerated triethylene glycol is sprayed at the top of the absorption tower , and it is fully contacted with the natural gas from the bottom up on the absorption tower to carry out mass transfer and exchange to remove moisture. The natural gas which moisture has been removed is removed from the tower top mist collector to remove glycol droplets larger than 5 μm and then exits the tower. After exiting the tower, it enters a casing heat exchanger and exchanges heat with the hot lean glycol before entering tower to reduce the temperature of the triethylene glycol. The natural gas after heat exchange enters the filter separator to separate the carried glycol and then enters the external pipeline. The rich triethylene glycol that has absorbed the moisture in the natural gas flows out from the absorption tower and enters the liquid level regulating valve, and after depressurization, it enters the reflux cooling coil at the top of the rich liquid rectification column and exchanges heat with the hot steam generated in the reboiler to provide column top reflux. After providing the column top reflux cooling capacity, it is heated to about 50 ℃, and then goes out of the coil to the triethylene glycol flash tank.The rich glycol is depressurized to 0.4mpa~0.6mpa in the flash tank, and the hydrocarbon gas and other gases dissolved in the triethylene glycol are flashed out, and this part of the gas is used as the fuel gas for the reboiler combustion. The flashed rich liquid triethylene glycol enters the mechanical filter to filter out the mechanical impurities, and then enters the activated carbon filter to further adsorb the hydrocarbon substances dissolved in the triethylene glycol and the degraded substances of the triethylene glycol. Then it enters the plate-type lean-rich liquid heat exchanger, exchanges heat with the high-temperature lean triethylene glycol from the heat exchange buffer tank at the lower part of the triethylene glycol reboiler, and heats up to ~150 °C to enter the rich liquid rectification column. In the triethylene glycol reboiler at the lower part of the rectification column, the triethylene glycol is heated to 193 ℃ , and the water in the triethylene glycol is fractionated and discharged from the top of the rectification column through the fractionation effect of the rectification column. The lean glycol with a concentration of about 99% (wt) overflows from the lean liquid stripping column in the reboiler to the lower triethylene glycol heat exchange buffer tank. Under the action of the dry gas in the lean liquid stripping column, the lean glycol concentration entering the heat exchange buffer tank can reach 99.5%~99.8%. In the glycol buffer tank, the lean glycol with a temperature of about 193 °C enters the lean-rich glycol heat exchanger to exchange heat with the rich glycol, and the temperature drops to about 100 °C and enters the pump. The lean liquid triethylene glycol is pumped into the gas-liquid heat exchanger outside the absorption tower, and after cooling with the gas heat exchanger out of the tower, it enters the top of the absorption tower from the upper part of the casing to complete the solvent circulation. A dry gas drawn from the dry gas pipe section at the outlet of the absorption tower is  the stripping gas of the rectifying column. 3. Technical indicators Processing capacity: 7MMSCFD Operation flexibility: 50~120% Product gas: water content ≤7lb s/SCF Stationary equipment design life:15 years Operating hours: 330d/a