KR880004848A - Method and apparatus for recovering anhydrous desorbent - Google Patents

Abstract

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Description

Method and apparatus for recovering anhydrous desorbent

Since this is an open matter, no full text was included.

1-3 are flow diagrams of each device for use in carrying out the method of the present invention, respectively.

Claims (12)

The gas desorption medium is heated in a first heat exchanger, the heated desorption medium is introduced into the packed sorption material, the adsorption dryer is adsorbed and removed from the desorption medium, and desorption in a desorption condenser constituted by a second heat bridge. It consists of removing the desorbent (the substance desorbed from the sorbent material) from the desorption medium by cooling the medium, and recycling the dried and cooled desorption medium to the first heat exchanger, adsorbing the desorption medium with high humidity during the initial stage. Before being introduced to the dryer, the desorption condenser is cooled to a temperature close to the dew point (water vapor saturation limit) to heat the cooled desorption medium to a dry state, and the desorption medium filled with desorption medium during the desorption step following the initial step is desorbed condenser Cooling from the sorbent material to the adsorption dryer without cooling the desorption medium during the cooling step following the desorption step The method for recovering a desorption from desorbed quality to dryness and particulate matter and filled with water to the sorbent material, characterized in that the key. The method of claim 1 wherein the flow rate of coolant through the desorbent condenser is adjusted to control the cooling rate of the desorbent medium by the desorbent condenser. The method of claim 1 or 2, wherein the relative flow of the desorbent medium through the desorbent condenser and / or the relative flow of the desorbent medium bypassing the desorbent condenser is adjusted to allow the desorbent medium to bypass the desorbent condenser completely. How to feature. The process according to claim 1, wherein the flow rate of the coolant through the desorbent condenser and / or the flow rate of the desorbent medium bypassing the desorbent condenser is controlled. The method according to any one of claims 1 to 4, wherein the flow rate of the coolant through the desorbent condenser and / or the flow rate of the desorbent medium bypassing the desorbent condenser is adjusted according to the water content of the desorbent medium. . 6. A method according to claim 5, wherein the temperature rise of the desorption medium leaving the sorbent material is used as an indication of the water content of the desorption medium. The process of claim 1, wherein the desorption medium is cooled in a third heat exchanger between the desorbent condenser and the adsorption dryer and heated in a fourth heat exchanger downstream of the adsorption dryer, wherein heat is transferred to the heat exchanger circuit. Thereby transferring from the third heat exchanger to the fourth heat exchanger. A sorbent vessel and means for purifying the gas stream to be purified through the sorbent vessel during the adsorption step, the sorbent vessel being coupled to a desorption circuit in which the desorbent condenser, adsorption dryer and heat exchanger are combined, A desorbent condenser is disposed between the sorbent vessel and the adsorption dryer, the sorbent vessel being filled with activated carbon and the heat sink is in the form of a heat reservoir filled with gravel. Device for use. 9. The apparatus of claim 8, wherein the adsorption dryer contains zeolite molecular sieves as sorbents for preferentially adsorbing water. 10. The capacity of the sorbent for preferentially adsorbing water in the adsorption dryer is about 10-15% of the capacity of the activated carbon in the sorbent vessel, and the capacity of the gravel filled in the heat reservoir is 10. And about 10-35% of the capacity of the activated carbon in the first container. The method of claim 1 as described in connection with the accompanying drawings. Apparatus for use in carrying out the method according to claim 1 as described and illustrated in connection with any one of FIGS. 1 to 3 of the accompanying drawings. ※ Note: The disclosure is based on the initial application.