7 results about "Glycol dehydration" patented technology

The utility model relates to the technical field of ethylene glycol dehydration, in particular to a dehydration mechanism which comprises a dehydration device, a dehydration tower shell and an outlet, the right end of the dehydration device is fixedly connected with the dehydration tower shell, the right end of the outer side of the dehydration tower shell is fixedly connected with the outlet, and the left end of the inner side of the outlet is fixedly connected with dust isolation cotton. The inner side of the lower end of the dehydrating tower shell is fixedly connected with a bearing, one side of the bearing is fixedly connected with a motor, the tail end of the upper side of the motor is fixedly connected with a rotating cylinder, the inner side of the upper end of the rotating cylinder is fixedly connected with a supporting rod, and the outer side of the rotating cylinder is fixedly connected with a scraper. The motor drives the rotating cylinder to rotate, so that the scraper on the outer side of the rotating cylinder clings to the inner wall of the dehydrating tower shell can clean and collect condensed coke into the collecting box, the interior of the dehydrating tower can be effectively decoked in the ethylene glycol dehydrating process, the heat transfer efficiency of the inner side of the dehydrating tower is enhanced, and the ethylene glycol extracting efficiency is improved.

Systems and methods presented herein generally relate to recycling, or reducing flaring or venting, of vent gases from glycol based dehydration of natural gas. Some systems and methods use high pressure gas, high pressure glycol, or pump-assisted high pressure glycol to provide motive energy to draw reflux gas and / or skimmer gas through one or more venturis and back to the contact tower of the dehydration system. Some systems and methods provide for harvesting energy from the dehydration process.

The invention discloses a method for preparing monovinyl glycol ether by dehydrating glycol, which comprises the following steps of: enabling glycol with a structural formula of HOCH2CH2 (OCH2CH2) nOH (n is a positive integer) to pass through a bed filled with a supported solid base catalyst, and reacting under the reaction conditions that the reaction temperature is 350-500 DEG C, the system pressure is 0.01-1.00 MPa, the weight space velocity of glycol liquid is 0.05-5.00 h <-1 > and the volume space velocity of diluted gas is 0-5000 h <-1 >, and preparing the monovinyl glycol ether with a structural formula of CH2 = CH (OCH2CH2) nOH. The method has the advantages of high selectivity of vinyl hydroxyl ether products, low production cost, large-scale device, simple reaction process and safe and environment-friendly process.

The application discloses a preparation method of diethylene glycol, which comprises the following steps: contacting ethylene glycol with a catalyst, and reacting to obtain the diethylene glycol; the catalyst is SO4 2‑ / ZnFeO4-ZrO2 obtained by impregnating the surface of ZnFeO4 loaded with ZrO2 with sulfuric acid. The catalyst provided by the application is applied to a diethylene glycol dehydration reaction for preparing diethylene glycol, so as to improve the conversion rate of ethylene glycol and the selectivity of the generated diethylene glycol.

The application discloses a preparation method of 1,4-dioxane, which comprises the following steps: reacting ethylene glycol with a catalyst to obtain 1,4-dioxane; and the catalyst is HClO4 / pure silicon molecular sieve. The catalyst provided by the application is applied to the dehydration reaction of ethylene glycol to prepare 1,4-dioxane, so as to improve the conversion rate of ethylene glycol and the selectivity of the generated 1,4-dioxane.

The invention relates to the field of pervaporation dehydration, in particular to a method for dehydrating ethylene glycol feed liquid with high conductivity. The SSZ-13 molecular sieve membrane with a high silica-alumina ratio is adopted as a key membrane material, good stability can be kept in pervaporation dehydration of ethylene glycol feed liquid with the conductivity of 50-2000 [mu] S / cm, and the dehydration capacity of the membrane material on ethylene glycol dehydration is further improved by modifying the membrane material.

The application discloses a preparation method of 1,4-dioxane, which comprises the following steps: reacting ethylene glycol with a catalyst to obtain 1,4-dioxane; the catalyst is SO4 2‑ / HTaMoO6. The catalyst provided by the application is applied to the reaction of preparing 1,4-dioxane by dehydrating ethylene glycol, so as to improve the conversion rate of ethylene glycol and the selectivity of the generated 1,4-dioxane.