RU2013152836A - INSTALLATION OF ADSORPTION DRYING LIQUID MERCAPTANS - Google Patents

Abstract

1. Installation of adsorption drying of liquid mercaptans, including the treatment of liquid mercaptans with an adsorbent under dynamic conditions in a system of adsorbers and desorbers operating alternately with regeneration of the adsorbent after its deactivation, containers, refrigerators, a regeneration gas heating system and a pipeline system with valves, characterized in that the system adsorbers and strippers contains as an adsorbent KA zeolites to ensure the cloud point of the drained mercaptans minus 45 ° C, filling at least four a a device with the function of an adsorber-desorber, while two devices connected in series provide the stage of adsorption drying of liquid mercaptans, when one device provides a rough drying of liquid mercaptans and one device provides a fine drying of liquid mercaptans, one device provides regeneration of the adsorbent by a stream of hot desorbing methane-containing gas , one apparatus provides cooling of the adsorbent after regeneration by a stream of cold methane-containing gas, a gas heating system II is a tubular furnace through which a heated desorbing methane-containing gas passes through a coil, and a pipeline system with valves operates in accordance with the sequence diagram of the process for drying liquid mercaptans, with the top of the adsorbers connected to the outlet line of the drained liquid mercaptans and the supply line of the desorbing methane-containing gas, and the bottom adsorbers connected to the input line of drained liquid mercaptans from the storage tank and the output line of the regeneration gas through the refrigerator with a cyclone, central

Claims (3)

1. Installation of adsorption drying of liquid mercaptans, including the treatment of liquid mercaptans with an adsorbent under dynamic conditions in a system of adsorbers and desorbers operating alternately with regeneration of the adsorbent after its deactivation, containers, refrigerators, a regeneration gas heating system and a pipeline system with valves, characterized in that the system adsorbers and strippers contains as an adsorbent KA zeolites to ensure the cloud point of the drained mercaptans minus 45 ° C, filling at least four a a device with the function of an adsorber-desorber, while two devices connected in series provide the stage of adsorption drying of liquid mercaptans, when one device provides a rough drying of liquid mercaptans and one device provides a fine drying of liquid mercaptans, one device provides regeneration of the adsorbent by a stream of hot desorbing methane-containing gas , one apparatus provides cooling of the adsorbent after regeneration by a stream of cold methane-containing gas, a gas heating system II is a tubular furnace through which a heated desorbing methane-containing gas passes through a coil, and a pipeline system with valves operates in accordance with the sequence diagram of the process for drying liquid mercaptans, with the top of the adsorbers connected to the outlet line of the drained liquid mercaptans and the supply line of the desorbing methane-containing gas, and the bottom adsorbers connected to the input line of drained liquid mercaptans from the storage tank and the output line of the regeneration gas through the refrigerator with a cyclone, central the pipe of which is connected to the exhaust gas line of the regeneration, and the bottom is connected by the drain line to the sump of condensed water and liquid mercaptans with the drain line of the condensed water and the line connecting the sump to the storage tank. 2. Installation of adsorption drying of liquid mercaptans according to claim 1, characterized in that the lines of movement of liquid mercaptans function at a pressure of 6-40 atm and a temperature of 25-50 ° C, and the lines of movement of a desorbing methane-containing gas operate at a pressure of 6-40 atm and temperature 320-350 ° C. 3 Installation of adsorption drying of liquid mercaptans according to claim 1, characterized in that the system of adsorbers and desorbers contains NaA zeolites as adsorbent, while the height of the layer of NaA zeolites in adsorbers L _NaA to compensate for the deactivation of NaA zeolites during regeneration by a desorbing methane-containing gas is calculated by the equation : $$L_{NaA}=L_{KA}\cdot L_{NaA}^0\cdot K_D/L_{KA}^0$$

, where L _KA is the calculated height of the layer of CA zeolites in adsorbers; $$L_{KA}^0$$

- the length of the mass transfer zone of the SC zeolites at the technological parameters of the drying of liquid mercaptans; $$L_{NaA}^0$$

- the length of the mass transfer zone of NaA zeolites at the technological parameters of the drying of liquid mercaptans; K _D is the coefficient of deactivation of zeolites NaA compared with zeolites KA (K _D > 1).