SU7029A1 - The method of processing a mixture of cresols - Google Patents
The method of processing a mixture of cresolsInfo
- Publication number
- SU7029A1 SU7029A1 SU7255A SU7255A SU7029A1 SU 7029 A1 SU7029 A1 SU 7029A1 SU 7255 A SU7255 A SU 7255A SU 7255 A SU7255 A SU 7255A SU 7029 A1 SU7029 A1 SU 7029A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- cresol
- meta
- mixture
- cresols
- processing
- Prior art date
Links
- 150000001896 cresols Chemical class 0.000 title description 10
- 239000000203 mixture Substances 0.000 title description 6
- RLSSMJSEOOYNOY-UHFFFAOYSA-N M-Cresol Chemical compound CC1=CC=CC(O)=C1 RLSSMJSEOOYNOY-UHFFFAOYSA-N 0.000 description 12
- 229940100630 metacresol Drugs 0.000 description 12
- IWDCLRJOBJJRNH-UHFFFAOYSA-N P-Cresol Chemical compound CC1=CC=C(O)C=C1 IWDCLRJOBJJRNH-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 159000000007 calcium salts Chemical class 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- -1 phenol cresols Chemical class 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000007127 saponification reaction Methods 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 229940108066 Coal Tar Drugs 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- 240000007842 Glycine max Species 0.000 description 1
- QWVGKYWNOKOFNN-UHFFFAOYSA-N O-Cresol Chemical compound CC1=CC=CC=C1O QWVGKYWNOKOFNN-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 159000000009 barium salts Chemical class 0.000 description 1
- QFKJCKFAYFUXRQ-UHFFFAOYSA-N barium;hydrate Chemical compound O.[Ba] QFKJCKFAYFUXRQ-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 230000005591 charge neutralization Effects 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 230000001264 neutralization Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 235000013533 rum Nutrition 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N sulfonic acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
Известно, что в продуктах деетилл ции каменноугольной смолы, в так называемой фенольном масле, содержатс на р ду с фенолом крезолы: орто-крезол с темнературой кипени 191° С и температурой застывани 30°, мета-крезол с темнературой кипени 203°С и температурой застывани 4° и пара-крезол с температурой кипени 202° и температурой застывани 32°.It is known that in the products of coal tar deethylization, in the so-called phenolic oil, there are a number of phenol cresols: ortho-cresol with a boiling temperature of 191 ° C and a solidification temperature of 30 °, meta-cresol with a boiling temperature of 203 ° C and temperature 4 ° C and para-cresol with a boiling point of 202 ° and a freezing point of 32 °.
Дл разделени этих изомеров в техническом три-крезоле (карболовой кислоте ) предлагалось много способов, так, например, по способу Bichma, перегнанный крезол обрабатывают при нагревании гидратом окиси бари о водой, нри этом Ва (ОН)2 берут в количестве достаточном дл полной нейтрализации. При унаривапии водного раствора бариевых солей, сначала вьшадают солл фенола, орто- п пара-крезола, а мета-крезол остаетс в маточном растворе.Many methods have been proposed for the separation of these isomers in the technical tri-cresol (carbolic acid). For example, according to the Bichma method, distilled cresol is treated by heating with barium hydrate with water, in which Ba (OH) 2 is taken in an amount sufficient for complete neutralization . With the aqueous solution of barium salts, the salt of phenol and ort-para-cresol are removed first, and the meta-cresol remains in the mother liquor.
Способ Ferrise Dessoulavy основываетс на различной растворимости кальциевых сойей, нри этом кальциева соль мета-крезола трудно растворима и выдел етс в виде осадка. Другой способ Ferrise Dessouk y. (Friedlender, Bd П, S. 178) основан на том, что раствор кадьпиевых солей нодверга/етс сначала перегонко под умепыпенпым дав.тением дл удалени масел, а затем кальциевые соли перегон ют перегретым паром, при этом кальциева соль мета-крезола разлагаетс , а кальциева соль пара-крезола остаетс без изменени .The Ferrise Dessoulavy method is based on the different solubilities of calcium soyas, in which the calcium salt of meta-cresol is difficult to dissolve and is released as a precipitate. Another way of Ferrise Dessouk y. (Friedlender, Bd P, S. 178) based on the fact that the solution of cadpium salts of nodverg is first distilled under reduced pressure to remove oils, and then the calcium salts are distilled with superheated steam, while the calcium salt of meta-cresol is decomposed, and the calcium salt of para-cresol remains unchanged.
Предлагались также способы разделени помощью превращени крееолов в сульфокнслоты и разложени последних перегретым па,ром; при этом каждому изомеру соответствует опред&т еннал температура разложени сульфокислоты. Эти способы технически более трудно выполнимы и менее удобны, чем способы, основанные па частичной нептрамзации крезолов ще ючами.Methods have also been proposed for the separation by converting the Krayoles to sulfoxy acids and decomposing the latter with superheated steam, rum; at the same time, each isomer corresponds to a specific & t ennal sulfonic acid decomposition temperature. These methods are technically more difficult to perform and less convenient than methods based on partial non-tramization by cresoluschee.
Предлагаемый снособ обработки смеси крезолов с целью их частичного разделени имеет в виду, главным образом, получение технического мета-крезола и,ш фракций крееола, богатых мета-крезолом.The proposed processing of a mixture of cresols for the purpose of their partial separation has in mind, mainly, the production of technical meta-cresol and, n fractions of creole, rich in meta-cresol.
Способ зак,ючаетс в неполном омылеЕШ щепочами исходного крезола, при этом установлено, что нри омылении едким натром или калием в первую очередь омыл етс мета-крезол. В виду этого смесь крезолов обрабатываетс количеством щелочи, которое необходамо дл омылени мета-крезола и которое onpeiдел етс на основании аналитлгческогоThe method of zak, yuchatsya in incomplete saponification with the scraps of the original cresol, it was found that when saponified with caustic soda or potassium, meta-cresol was first washed. In view of this, the cresol mixture is treated with the amount of alkali that is necessary for the saponification of meta-cresol and which is determined on the basis of the analytical
содержа ни мета-крезола в иеходцои иродукте. Концентраци едкого наГ1)а иди кади может бьпъ от 5% до 30%.containing no meta-cresol in the product. The concentration of caustic on G1) and go cadi can be from 5% to 30%.
Продукт реакции перегон ют с перегретым паром, мета-крезол к св занном соединении остаетс li iuiaapaTc (остатке ) и разлагаетс дл нолучен свободного крезола обычном путем при иомощи кислот серной iuir сол ной, или же сернистого илж углекислого газа.The reaction product is distilled with superheated steam, the meta-cresol to the bound compound remains li iuiaapaTc (residue) and is decomposed to obtain free cresol in the usual way using sulfuric acid iuir acids or carbon dioxide.
Пример. 2000 вес. частей сырого три-крезола, содержащего 35% мета-крезола , обрабатываютс 1 000 вес. част ми 50% раствора аОН и терегон отс I открытом паром, температура которого i колеблетс от 102° :w 110° С. После |;а;ь : ложени крезол та, оставшегос в ;iiiii;i- iExample. 2000 weight. parts of raw tri-cresol containing 35% meta-cresol are treated with 1,000 weight. parts of a 50% solution of aOH and teregon ots I open steam, the temperature of which i ranges from 102 °: w 110 ° C. After |; a; b: cresol deposits, remaining in; iiiii; ii i
рате, кислотой, содержание мета-крезола увеличилось до 52-53%.acid, the content of meta-cresol increased to 52-53%.
Предмет патентаPatent Subject
Способ обработки смеси крезолов с целью их частичного разделени , отличающийс тем, Ч1о смесь крезолов обрабатывают количеством щелочи, эггвивалептным имеющемус в смеси количеству нета-креаола, si продукт реакции подь-ргают затем перегонке с перегретым вод ным паром, после чего из полученного остатка крезолы выдел н1т обычным при помощи кислот серной или сил пой , или же сернистого пли углекислого газа.The method of treating a mixture of cresols with the aim of partial separation, characterized in that, the mixture of cresols is treated with an amount of alkali, it is identical to the amount of neta-creaol present in the mixture, the reaction product is then distilled off with superheated steam, then the resulting cresol is separated N1t usual with the help of sulfuric acid or strength of sulfur, or sulphurous pl or carbon dioxide.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU7029A1 true SU7029A1 (en) | 1928-11-30 |
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