Промисловий спосіб одержання оцтової кислоти



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Lvivska politechnica National University, Lviv. За цих умов через хв. We elaborated a original scheme of oxydation products separation and purification of crotonic acid, which reduces to minimum the losses of initial aldehyde as well as the crotonic acid. Студенты, аспиранты, молодые ученые, использующие базу знаний в своей учебе и работе, будут вам очень благодарны. The further increasing of initial concentration of aldehyde is not profitable because under these conditions the rate of its oxydation already does not increase, and selectivity to main products remains to decrease. Харчова добавка Е — молочна кислота. Предложена технологическая схема процесса. For these purpose the feed of heat in the rectification tower one realize by means of condensation of steam of an additional solvent - n-octane. It was stated that the existence of limit partial preassures of oxygen Po2lim. The author elaborated the way of purifying of recyclic acetic acid from crotonic aldehyde by its oxidation with molecular oxygene at K in the presence of catalyst with an additional introduction of acetic aldehyde to oxydate. При этом за 60 мин. On the base of the obtained experimental data the optimum conditions of crotonic aldehyde oxydation have been chosen. On the basis of the realized experiments it was stated that the optimal medium for the process of crotonic aldehyde oxydation was ethylacetate.

Промисловий спосіб одержання оцтової кислоти

Харчова добавка Е — молочна кислота. In this production acetic acid is containated a by-product-crotonic aldehyde and therefore in the existing production it is nesessary to remove that part of recyclic acid. These results induced the author for the first time to systematically investigation of the oxydation of crotonic aldehyde at higher preassures of O2 up to 1,6 МPa, but the general kinetic regularities did not change essentially. Обнаружено существование предельных парциальных давлений кислорода Ро2пред. On the basis of the realized experiments it was stated that the optimal medium for the process of crotonic aldehyde oxydation was ethylacetate. Предложено уравнения, которые адекватно описывают брутто-кинетику данного процесса. That permitts to increase the economy of the process. It was discovered the linear increase of Po2lim. Regularities of the process were studied in the wide range of temperatures K and partial preassures of oxygen 0,62 МPa. Флегмове число - 1. Lvivska politechnica National University, Lviv. It was stated that the existence of limit partial preassures of oxygen Po2lim. Основы технологии получения кротоновой и регенерации уксусной кислоты. The dissertation is devoted to the elaboration of principles of technology of crotonic acid receiving by means of crotonic aldehyde oxydation and use of this reaction for the purification of acetic acid from a by-product-crotonic aldehyde on the production of vinylacetate. Температура верху колони - К, а низу - К. При этом за 60 мин. За таких умов через 60 хв.

Промисловий спосіб одержання оцтової кислоти

For these purpose the feed of heat in the rectification tower one realize by means of condensation of steam of an additional solvent - n-octane. The increase of partial pressure of oxygen from 0, to 0,1 МPa essentially intensifies the process of oxydation reaction order to oxygen is 0,6 with practically stable summary selectivity to crotonic and percrotonic acsids. Виявилось, що при К через 7 год. In this production acetic acid is containated a by-product-crotonic aldehyde and therefore in the existing production it is nesessary to remove that part of recyclic acid. On the basis of the realized experiments it was stated that the optimal medium for the process of crotonic aldehyde oxydation was ethylacetate. On the base of the obtained experimental data the optimum conditions of crotonic aldehyde oxydation have been chosen. We elaborated a original scheme of oxydation products separation and purification of crotonic acid, which reduces to minimum the losses of initial aldehyde as well as the crotonic acid. The attained results permitted the author to improve the production of vinylacetate by reaction of acetylene with acetic acid. This fact permits to use the increased pressure of oxygen to decrease the temperature of oxydation that provides higher selectivity and yield of the main products. Харчова добавка Е — молочна кислота. Работы в архивах красиво оформлены согласно требованиям ВУЗов и содержат рисунки, диаграммы, формулы и. The author elaborated the way of purifying of recyclic acetic acid from crotonic aldehyde by its oxidation with molecular oxygene at K in the presence of catalyst with an additional introduction of acetic aldehyde to oxydate. The further increasing of initial concentration of aldehyde is not profitable because under these conditions the rate of its oxydation already does not increase, and selectivity to main products remains to decrease.

Промисловий спосіб одержання оцтової кислоти

Предложена технологическая схема процесса. Lvivska politechnica National University, Lviv. Флегмове число - 1. За цих умов через хв. Обнаружено существование предельных парциальных давлений кислорода Ро2пред. The formal reaction order to aldehyde is the first. Сделано выбор оптимальных условий процесса окисления кротонового альдегида в среде этилацетата: Основы технологии получения кротоновой и регенерации уксусной кислоты. The attained results permitted the author to improve the production of vinylacetate by reaction of acetylene with acetic acid. Предложено уравнения, которые адекватно описывают брутто-кинетику данного процесса. Енергетичний баланс окиснення субстрату. In this production acetic acid is containated a by-product-crotonic aldehyde and therefore in the existing production it is nesessary to remove that part of recyclic acid. We elaborated a original scheme of oxydation products separation and purification of crotonic acid, which reduces to minimum the losses of initial aldehyde as well as the crotonic acid. This fact permits to use the increased pressure of oxygen to decrease the temperature of oxydation that provides higher selectivity and yield of the main products. Вплив тиску кисню обмежений певним граничним значенням Ро2гр. With a view to minimalize the losses of crotonic acid at the separation of still liquid as well as provite its appropriate purity one realize the extraction of crotonic acid by water from its solution in n-octane.

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