SU483391A1 - The method of producing propylene oxide and acetaldehyde - Google Patents
The method of producing propylene oxide and acetaldehydeInfo
- Publication number
- SU483391A1 SU483391A1 SU1887333A SU1887333A SU483391A1 SU 483391 A1 SU483391 A1 SU 483391A1 SU 1887333 A SU1887333 A SU 1887333A SU 1887333 A SU1887333 A SU 1887333A SU 483391 A1 SU483391 A1 SU 483391A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- oxygen
- propylene
- section
- reaction
- acetaldehyde
- Prior art date
Links
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 title claims description 12
- 238000000034 method Methods 0.000 title claims description 11
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 title claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 16
- 239000001301 oxygen Substances 0.000 claims description 16
- 229910052760 oxygen Inorganic materials 0.000 claims description 16
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 14
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 14
- 230000007423 decrease Effects 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims 1
- 239000007795 chemical reaction product Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- ONIBWKKTOPOVIA-UHFFFAOYSA-N Proline Natural products OC(=O)C1CCCN1 ONIBWKKTOPOVIA-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Epoxy Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Изобретение относитс к способу получени окиси пропилена и ацетальдегида путем газофазнопо окислени прол лена.This invention relates to a process for producing propylene oxide and acetaldehyde by gas phase oxidation of proline.
Известен способ получени окиси пропилена и а1цетальдегида путем окислени пропилена .кислородом при температуре 300- 450° С и давлении 2-10 атм в последовательно соединенных реакционны.к секци х. Недостатками известного способа .вл ютс мала , не более 10%, конверси проп.илена и низка концентраци целевых .продуктов.A known method of producing propylene oxide and a1 acetaldehyde by oxidizing propylene with oxygen at a temperature of 300-450 ° C and a pressure of 2-10 atm in consecutively connected reactions to sections. The disadvantages of this method are low, not more than 10%, propylene conversion and low concentration of the desired products.
С целью устранени указанных недостатков нредложено процесс вести при объемном соотношении про.пилен : кислород, равном 14-15 : I в первой реакционной секции с уменьшением этого соотношени в каждой последующей секции до достижени соотношени 10-И : 1 в последней реакционной секции. Требуемое соотношение реагентов может быть достигнуто нутем подачи кислорода в каждую из реакционных секций в количестве .0,5-15 об. % от ис.ходного пролилена.In order to eliminate the above drawbacks, the process is proposed to conduct at a volume ratio of pro.pilen: oxygen equal to 14-15: I in the first reaction section with a decrease in this ratio in each subsequent section until the ratio reaches 10 I: 1 in the last reaction section. The required ratio of reagents can be achieved by blending oxygen in each of the reaction sections in the amount of .0.5-15 vol. % of iskhodnogo prolilen.
Суммарна конверси иро.п,иле,на по предлагаемому способу составл ет до 44%, концентраци окиси пропилена и а.цетальдегида 17 и 13 об. % соответственно. Процесс провод т в системе, состо щей из подогревател и нескольких последовательно соединенных между собой реакционных секций. Число реакционных секций может .колебатьс от двух доThe total conversion of ip, silt, by the proposed method is up to 44%, the concentration of propylene oxide and acetaldehyde is 17 and 13 vol. % respectively. The process is carried out in a system consisting of a preheater and several reaction sections connected in series. The number of reaction sections can range from two to
нескольких дес тков. Реакционна секци состоит из собственно реактора и смесител .a few dozen tkov. The reaction section consists of the reactor itself and the mixer.
Смесь пропилена с кислородом с содержанием последнего 0,5-15 об. % 1поступает в подогреватель, где иагреваетс до 300--320° С, и далее подаетс в первую секцию реа.кционной системы, где происходит окисление. Концентраци кислорода на выходе .из первой ,ии снижаетс практически до нул .A mixture of propylene with oxygen with the content of the last 0.5-15 vol. The% 1 enters the preheater, where it heats up to 300-320 ° C, and then is fed to the first section of the reaction system, where oxidation occurs. The oxygen concentration at the outlet of the first, and decreases to almost zero.
Пепрореагировавший проиилен at продукты реакции поступают в смеситель второй секции, куда .подаетс также кислород в количестве 0,5-15 об. % от кол.ичества первоначальной смеси. Перед третьей и носледующей секци ми реакционной системы непрореагировавший пропилен вместе с продуктами окислени .поступают в смеситель, где .к ним добавл етс кислород в количестве 0,5- 15 об. % от количества первоначальной смеси.The unreacted propylene at the reaction products are fed to the second section mixer, where oxygen in the amount of 0.5-15 vol. % amount of the original mixture. Before the third and next sections of the reaction system, unreacted propylene together with the oxidation products. Enter the mixer, where oxygen in the amount of 0.5-15% is added to it. % of the amount of the initial mixture.
Число реакционных секций подбираетс из расчета наиболее полного превращени пропилена и взрывобезопасности смеси. По .выходе из реакторной системы продукты реакции улавливают, а .непрореагировавший пропилен возвращают в рецикл.The number of reaction sections is selected on the basis of the most complete conversion of propylene and the explosion safety of the mixture. At the exit of the reactor system, the reaction products are captured, and the unreacted propylene is recycled.
.Пример. Реакционна система представл ет собой трубку из нержавеющей стали диаметром 50 мм, она состоит из подогревател и восьми секций. Смесь .пропилена с кислородом с содержанием последнего 6,5 об. % подают.Example. The reaction system is a stainless steel tube with a diameter of 50 mm, it consists of a preheater and eight sections. A mixture of .propylene with oxygen with the content of the last 6.5 vol. % served
в подогреватель, где ее нагревают до температуры 300-310° С, а затем подают в .первую секцию реактора.into the heater, where it is heated to a temperature of 300-310 ° C, and then fed to the first section of the reactor.
Вследствие экзотермической реакции окислени температура в секции ловышаетс до 420-440° С. Концентраци кислорода на выходе из пер/вой сек1ции пе превышает 0,5 об. %. Непрореагировавш-ий пролилен вместе с продуктами реакции подают в сзиеситель второй секции, где к ним добавл ют 6,0 об. % кислорода от ис.ходного пропилена. Выход щие газы поступают в третью и последующие секции .Due to the exothermic oxidation reaction, the temperature in the section catches up to 420-440 ° C. The oxygen concentration at the outlet of the first section does not exceed 0.5 vol. % Unreacted proline along with the reaction products is fed to a second section section, where 6.0 vol. % of oxygen from the original propylene. The effluent gases enter the third and subsequent sections.
Аналогичным образом в третью секцию ввод т 6,0 об. % кислорода, в четвертую и каждую еосладующую секции - 5,0 об. % кислорода .Similarly, 6.0 vol. % of oxygen, in the fourth and each e-cools section - 5.0 vol. % of oxygen.
По выходе из реакторной системы продукты реакции улаВливают водой, и выдел ют целавые продукты путе.м ректификации. Содержатаие ацетальдегида в продуктах реакции 17,0 об. %, окиси пропилена - 13,0 об. %. Суммарна конверси пропилена 44%.Upon leaving the reactor system, the reaction products are water-packed and the helium products are recovered by rectification. The content of acetaldehyde in the reaction products 17.0 vol. %, propylene oxide - 13.0 vol. % Total propylene conversion is 44%.
Предмет изобретени Subject invention
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1887333A SU483391A1 (en) | 1973-02-23 | 1973-02-23 | The method of producing propylene oxide and acetaldehyde |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1887333A SU483391A1 (en) | 1973-02-23 | 1973-02-23 | The method of producing propylene oxide and acetaldehyde |
Publications (1)
Publication Number | Publication Date |
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SU483391A1 true SU483391A1 (en) | 1975-09-05 |
Family
ID=20543683
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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SU1887333A SU483391A1 (en) | 1973-02-23 | 1973-02-23 | The method of producing propylene oxide and acetaldehyde |
Country Status (1)
Country | Link |
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SU (1) | SU483391A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999032469A1 (en) * | 1997-12-22 | 1999-07-01 | The Dow Chemical Company | Process for the oxidation of olefins to olefin oxides |
US6323350B1 (en) | 1997-12-22 | 2001-11-27 | The Dow Chemical Company | Process for the oxidation of olefins to olefin oxides |
-
1973
- 1973-02-23 SU SU1887333A patent/SU483391A1/en active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999032469A1 (en) * | 1997-12-22 | 1999-07-01 | The Dow Chemical Company | Process for the oxidation of olefins to olefin oxides |
US6323350B1 (en) | 1997-12-22 | 2001-11-27 | The Dow Chemical Company | Process for the oxidation of olefins to olefin oxides |
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