SU307997A1 - METHOD FOR ISOLATION OF ETHYL ALCOHOL RECEIVED BY DIRECT HYDRATATION OF ETHYLENE - Google Patents
METHOD FOR ISOLATION OF ETHYL ALCOHOL RECEIVED BY DIRECT HYDRATATION OF ETHYLENEInfo
- Publication number
- SU307997A1 SU307997A1 SU1415638A SU1415638A SU307997A1 SU 307997 A1 SU307997 A1 SU 307997A1 SU 1415638 A SU1415638 A SU 1415638A SU 1415638 A SU1415638 A SU 1415638A SU 307997 A1 SU307997 A1 SU 307997A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- ethylene
- ethyl alcohol
- direct
- alcohol
- hydratation
- Prior art date
Links
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title description 18
- 235000019441 ethanol Nutrition 0.000 title description 17
- 239000005977 Ethylene Substances 0.000 title description 5
- VGGSQFUCUMXWEO-UHFFFAOYSA-N ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 title description 5
- 238000002955 isolation Methods 0.000 title 1
- 229920000642 polymer Polymers 0.000 description 8
- 238000004821 distillation Methods 0.000 description 6
- 239000007791 liquid phase Substances 0.000 description 5
- 230000036571 hydration Effects 0.000 description 4
- 238000006703 hydration reaction Methods 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K [O-]P([O-])([O-])=O Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 235000020071 rectified spirit Nutrition 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Description
Изобретение относитс к способам переработки спирта-сырца, полученного пр мой гидратацией этилена на фосфорнокислом катализаторе .The invention relates to methods for processing raw alcohol obtained by direct hydration of ethylene on a phosphate catalyst.
В процессе получени синтетического этилового спирта способом пр мой гидратации этилена на фосфорнокислом катализаторе образуетс 5-25%-ный раствор спирта-сырца, содержащий полимеры, которые при дальнейшей переработке спирта-сырца (па ректификационных установках) распредел ютс на тарелках ректификационной колонны и вывод тс с товарным продуктом - спиртом ректификатом - ухудша его качество, и с фузельными водами, загр зн химстоки.In the process of obtaining synthetic ethyl alcohol by the method of direct hydration of ethylene on a phosphate catalyst, a 5-25% solution of crude alcohol containing polymers is formed, which, during further processing of raw alcohol (distillation units), are distributed on plates of a distillation column and output with a commodity product — rectified alcohol — impairing its quality, and with fusal waters, chemical contamination contaminants.
В сушествующем способе переработки спирта-сырца предусматриваетс вывод полимеров из колонн ректификации путем направлени всего потока жидкостной фазы исчерпывающей части колонны во флорентийский сосуд. Из флорентийского сосуда (после отстаивани ) полимеры направл ют в сборник, а водно-спиртовой конденсат возвращают в исчерпывающую часть колонны на нижележащую тарелку. . В св зи с тем, что концентраци полимеров в спирте-сырце составл ет в среднем 0,1 вес. %, а количество жидкостной фазы в исчерпывающей части ректификационных колонн велико, данный метод не позвол ет выделить полимеры и последние вывод тс из колонны частично в составе фузельной воды в виде химически загр зненных стоков в больших количествах, сбрасываемых через устансвку б1-;ологпческой очистки в природные водоемы , частично попада в продукт, ухудша его качество. Полимеры, содерл ащиес в фузе .тыюй воде, очищаютс биологическим методом довольно трудно.The existing raw alcohol processing method provides for the withdrawal of polymers from rectification columns by directing the entire flow of the liquid phase of the exhaustive part of the column into a Florentine vessel. From the Florentine vessel (after settling), the polymers are sent to the collector, and the hydroalcoholic condensate is returned to the exhaustive part of the column on the underlying plate. . Due to the fact that the concentration of polymers in raw alcohol is on average 0.1 weight%. % and the amount of liquid phase in the exhaustive part of the distillation columns is large, this method does not allow to isolate polymers and the latter are removed from the column partly as part of the fusal water in the form of chemically contaminated effluents in large quantities discharged through the equipment; natural reservoirs, partially falling into the product, reducing its quality. The polymers contained in the fuse of water are purified by biological methods rather difficult.
С целью улучшени качества спирта и упрощени очистки сточных вод, предлагаетс при выделении этилового спирта, полученного пр мой гидратацией этилена, отводить из ректификационной колонны жидкостную фазу сIn order to improve the quality of the alcohol and simplify the treatment of wastewater, it is proposed, when extracting ethyl alcohol obtained by direct hydration of ethylene, to withdraw the liquid phase from the distillation column.
содержанием спирта 40-80 об. % с последующим ее разбавлением до содержани спирта 10-20 об. % и направл ть в отстойник.alcohol content of 40-80 vol. % followed by dilution to an alcohol content of 10-20 vol. % and be directed to a sump.
Полимеры, вл сь водоиерастворимыми органическими продуктами, хорошо раствор ютс в этиловом спирте и в процессе ректификации накапливаютс в колопне, достига максимальной концентрации (17-35 об. %) в ой части колонны, где концентраци спир4000 .The polymers, being water-soluble organic products, dissolve well in ethanol and accumulate in the colony during the rectification process, reaching a maximum concentration (17-35%) in the second part of the column, where the concentration is alcohol4000.
Выделившиес при разбавлении по.г1нмеры отдел ют от водно-спиртового сло во флорентийском сосуде и вывод т в сборник, а водноспиртовой слой направл ют обратно в колонну на тарелку питани .Separated at dilution, pglnmers were separated from the aqueous-alcoholic layer in a florentine vessel and withdrawn into a collection, and the hydroalcoholic layer was sent back to the column on a food plate.
Способ позвол ет улучшить качество стоков по химическому поглощению кислорода на 60-65% и качество спирта по содержанию в нем примесей, определ ющихс по ГОСТ 11547-65, на 25 вес. %.The method allows to improve the quality of the effluent by the chemical absorption of oxygen by 60-65% and the quality of the alcohol according to the content of impurities in it, which are determined according to GOST 11547-65, by 25% by weight. %
Предмет изобретени Subject invention
Способ выделени этилового спирта, полученного пр мой гидратацией этилена, путем ректификации спирта-сырца с одновременнымThe method of extracting ethyl alcohol obtained by direct hydration of ethylene by distillation of raw alcohol with simultaneous
отводом жидкостной фазы исчерпывающей части колонйы в отстойник, отделением полимерной фракции и возвратом водно-спиртовой фракции на ректификацию, отличающийс тем, что, с целью улучшени качества целевого продукта и упрощени очистки сточных вод, из ректификационной колонны отвод т жидкостную фазу с содержанием спирта 40- 80 об. %, разбавл ют ее до содержани спирта 10-20 об. % и направл ют в отстойник.discharging the liquid phase of the exhaustive part of the colony to the settling tank, separating the polymer fraction and returning the water-alcohol fraction to the rectification, characterized in that, in order to improve the quality of the target product and simplify wastewater treatment, the liquid phase containing 40% alcohol is removed from the distillation column 80 vol. %, dilute it to an alcohol content of 10-20 vol. % and sent to the sump.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU307997A1 true SU307997A1 (en) |
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