摘要:
A process directed to acetic acid production comprising providing a feed stream comprising methyl iodide, water, acetic acid, methyl acetate, and at least one PRC to a distillation column comprising a distillation zone and a bottom sump zone and distilling the feed stream at a pressure and a temperature sufficient to produce an overhead stream comprising methyl iodide and at least one PRC, and a residuum stream flowing from the bottom sump zone comprising water and greater than or equal to about 0.11 weight percent HI is disclosed herein.
摘要:
A process for continuously providing superheated liquid to a chemical process vessel by providing a first heating device capable of heating an entire liquid effluent stream from the vessel, the first heating device receiving the entire liquid effluent stream from the vessel and returning a heated liquid stream to the vessel; filling a similar second heating device with liquid from the liquid effluent stream prior to applying any heat to the second heating device; heating and increasing the liquid effluent stream supplied to the second heating device while decreasing the liquid effluent stream provided to the first heating device until the second heating device is receiving and returning all the heated liquid stream to the vessel, while adjusting heat to the devices as needed to maintain the heated liquid below the flash point and maintain the desired total amount of superheated liquid provided to the vessel.
摘要:
Die vorliegende Erfindung betrifft ein Vefahren zur Regelung von Konzentrationen in verfahrenstechnischen Operationen - bevorzugt der thermischen Trenntechnik - unter Verwendung einer nichtlinearen, druckkompensierten Temperatur als Regelsignal. Das Verfahren ist in einem großen Arbeitsbereich flexibel einsetzbar.
摘要:
Systems and methods for producing a colorless triethanolamine product stream with a degree of purity of greater than or equal to 99% by weight from the triethanolamine distillation columns in a non-reactive distillation process. The desired triethanolamine product stream can be obtained by increasing the bottom stream flow rate at the diethanolamine column by 80 kilograms per hour, and reducing the triethanolamine product stream flow rate by 500 kilograms per hour. This process can result in a reduction of the temperature at the triethanolamine column by up to 23.5 degrees. The reduced temperature can result in a triethanolamine product stream with an APHA color of 0 to less than 50, for example, 0 to 40, for example, 0 to 30, for example 0 to 20, and for example, 0 to 10.
摘要:
Provided are a CO 2 recovery device and a CO 2 recovery method with which it is possible to reduce the thermal degradation of a CO 2 absorption liquid at the time of regeneration. This CO 2 recovery device (1) comprises: a CO 2 absorption tower (14) in which CO 2 included in an exhaust gas (11A) is absorbed by a CO 2 absorption liquid (13); and a CO 2 absorption liquid regeneration tower (15) that heats and regenerates the CO 2 absorption liquid (13) that has absorbed CO 2 . The CO 2 absorption liquid regeneration tower (15) includes: a main body part (151) in which the CO 2 absorption liquid (13) is temporarily stored; a boot part (153) that is provided downward from a mirror surface part (152) of the main body part (151), and that has a relatively smaller capacity than the main body part (151); a flowmeter (101) that is provided to the boot part (153), and that measures the liquid surface level of the CO 2 absorption liquid (13) that changes between the main body part (151) and the boot part (153); and a control device (102) that controls the liquid surface level of the CO 2 absorption liquid (13) between the main body part (151) and the boot part (153) on the basis of the measurement result of the flowmeter (101).
摘要:
Provided are a CO 2 recovery device and a CO 2 recovery method with which it is possible to reduce the thermal degradation of a CO 2 absorption liquid at the time of regeneration. This CO 2 recovery device (1) comprises: a CO 2 absorption tower (14) in which CO 2 included in an exhaust gas (11A) is absorbed by a CO 2 absorption liquid (13); and a CO 2 absorption liquid regeneration tower (15) that heats and regenerates the CO 2 absorption liquid (13) that has absorbed CO 2 . The CO 2 absorption liquid regeneration tower (15) includes: a main body part (151) in which the CO 2 absorption liquid (13) is temporarily stored; a boot part (153) that is provided downward from a mirror surface part (152) of the main body part (151), and that has a relatively smaller capacity than the main body part (151); a flowmeter (101) that is provided to the boot part (153), and that measures the liquid surface level of the CO 2 absorption liquid (13) that changes between the main body part (151) and the boot part (153); and a control device (102) that controls the liquid surface level of the CO 2 absorption liquid (13) between the main body part (151) and the boot part (153) on the basis of the measurement result of the flowmeter (101).
摘要:
Provided are a CO 2 recovery device and a CO 2 recovery method with which it is possible to reduce the thermal degradation of a CO 2 absorption liquid at the time of regeneration. This CO 2 recovery device (1) comprises: a CO 2 absorption tower (14) in which CO 2 included in an exhaust gas (11A) is absorbed by a CO 2 absorption liquid (13); and a CO 2 absorption liquid regeneration tower (15) that heats and regenerates the CO 2 absorption liquid (13) that has absorbed CO 2 . The CO 2 absorption liquid regeneration tower (15) includes: a main body part (151) in which the CO 2 absorption liquid (13) is temporarily stored; a boot part (153) that is provided downward from a mirror surface part (152) of the main body part (151), and that has a relatively smaller capacity than the main body part (151); a flowmeter (101) that is provided to the boot part (153), and that measures the liquid surface level of the CO 2 absorption liquid (13) that changes between the main body part (151) and the boot part (153); and a control device (102) that controls the liquid surface level of the CO 2 absorption liquid (13) between the main body part (151) and the boot part (153) on the basis of the measurement result of the flowmeter (101).