RU94012425A - METHOD OF PREPARING METHYL-TERTALKYL AIR - Google Patents

METHOD OF PREPARING METHYL-TERTALKYL AIR

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Publication number
RU94012425A
RU94012425A RU94012425/04A RU94012425A RU94012425A RU 94012425 A RU94012425 A RU 94012425A RU 94012425/04 A RU94012425/04 A RU 94012425/04A RU 94012425 A RU94012425 A RU 94012425A RU 94012425 A RU94012425 A RU 94012425A
Authority
RU
Russia
Prior art keywords
methyl tert
oligomerization
alkenes
ether
fraction
Prior art date
Application number
RU94012425/04A
Other languages
Russian (ru)
Other versions
RU2078752C1 (en
Inventor
Б.А. Сараев
С.Г. Кузнецов
Original Assignee
ТОО "Пульсар"
Filing date
Publication date
Application filed by ТОО "Пульсар" filed Critical ТОО "Пульсар"
Priority to RU94012425A priority Critical patent/RU2078752C1/en
Priority claimed from RU94012425A external-priority patent/RU2078752C1/en
Publication of RU94012425A publication Critical patent/RU94012425A/en
Application granted granted Critical
Publication of RU2078752C1 publication Critical patent/RU2078752C1/en

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Claims (1)

Способ относится к нефтехимии, в частности к получению метил-треталкиловых эфиров, которые используются в качестве высокооктановых добавок к моторным топливам. Способ получения метил-треталкиловых эфиров путем взаимодействия треталкенов, содержащихся в C4 и/или C5 углеводородных фракциях, с метанолом в присутствии кислого катализатора с образованием метил-треталкилового эфира. Продукты реакции разделяют ректификацией с отбором сверху колонны непрореагировавших углеводородов и метанола, которые подают в реактор олигомеризации алкенов. Олигомеризацию осуществляют в присутствии фосфорной кислоты на носителе при 150 - 230°С и давлении 20 - 50 ата. Из продуктов олигомеризации выделяют в качестве верхнего продукта ректификационной колонны алкансодержащую фракцию, а в качестве кубового продукта - фракцию олигомеров алкенов и высших эфиров. Фракция олигомеров алкенов может быть направлена на стадию синтеза метил-треталкилового эфира. Тогда в качестве кубового продукта колонны выделения эфира отбирают смесь C4 и/или C5 метил-треталкилового эфира, олигомеров алкенов и высших эфиров.The method relates to petrochemistry, in particular the production of methyl tert-alkyl esters, which are used as high-octane additives to motor fuels. A method of producing methyl tert-alkyl ethers by reacting the tert-alkenes contained in C 4 and / or C 5 hydrocarbon fractions with methanol in the presence of an acidic catalyst to form methyl tert-alkyl ether. The reaction products are separated by distillation with the selection from the top of the column unreacted hydrocarbons and methanol, which are fed into the reactor oligomerization of alkenes. Oligomerization is carried out in the presence of phosphoric acid on a carrier at 150–230 ° C and a pressure of 20–50 at. From the products of oligomerization, the alkane-containing fraction is isolated as the top product of the distillation column, and the fraction of alkene oligomers and higher esters is used as the bottom product. The fraction of alkene oligomers can be sent to the stage of methyl tertalkyl ether synthesis. Then a mixture of C 4 and / or C 5 methyl tert-alkyl ether, alkenes oligomers and higher esters is taken as the bottom product of the ether separation column.
RU94012425A 1994-04-08 1994-04-08 Method of preparing methyl tetraakyl ethers RU2078752C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU94012425A RU2078752C1 (en) 1994-04-08 1994-04-08 Method of preparing methyl tetraakyl ethers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU94012425A RU2078752C1 (en) 1994-04-08 1994-04-08 Method of preparing methyl tetraakyl ethers

Publications (2)

Publication Number Publication Date
RU94012425A true RU94012425A (en) 1995-12-20
RU2078752C1 RU2078752C1 (en) 1997-05-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU94012425A RU2078752C1 (en) 1994-04-08 1994-04-08 Method of preparing methyl tetraakyl ethers

Country Status (1)

Country Link
RU (1) RU2078752C1 (en)

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