SU165713A1 - Method of producing dimethylsulfoxide - Google Patents
Method of producing dimethylsulfoxideInfo
- Publication number
- SU165713A1 SU165713A1 SU858169A SU858169A SU165713A1 SU 165713 A1 SU165713 A1 SU 165713A1 SU 858169 A SU858169 A SU 858169A SU 858169 A SU858169 A SU 858169A SU 165713 A1 SU165713 A1 SU 165713A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- vapor
- gas
- dimethyl sulfide
- dimethylsulfoxide
- producing
- Prior art date
Links
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 title description 3
- QMMFVYPAHWMCMS-UHFFFAOYSA-N methyl sulfide Chemical compound CSC QMMFVYPAHWMCMS-UHFFFAOYSA-N 0.000 description 18
- 239000007789 gas Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 4
- LSDPWZHWYPCBBB-UHFFFAOYSA-N methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 4
- 239000007800 oxidant agent Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000001590 oxidative Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- AFVFQIVMOAPDHO-UHFFFAOYSA-N methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 101700050571 SUOX Proteins 0.000 description 1
- 241000779819 Syncarpia glomulifera Species 0.000 description 1
- 229940036248 Turpentine Drugs 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 230000005591 charge neutralization Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229940098779 methanesulfonic acid Drugs 0.000 description 1
- 230000001264 neutralization Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000001739 pinus spp. Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 230000002588 toxic Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Description
Предложенный способ относитс к области обезвреживани токсичных парогазовых и жидких выбросов варочного цеха сульфатноцеллюлозного производства и получени на этой основе диметилсульфоксида - растворител и антифиза.The proposed method relates to the field of neutralization of toxic vapor-gas and liquid emissions from the brewing workshop of sulphate-pulp production and the production of dimethyl sulfoxide - solvent and antiphysis on this basis.
Дл упрощени процесса и получени чистого продукта, предлагаетс нары диметилсульфида в смеси с газом пропускать в перекись водороду при температуре оо50° С.In order to simplify the process and obtain a pure product, it is proposed to use a dimethyl sulfide nara mixed with gas to pass hydrogen peroxide at about 50 ° C.
Газовые выбросы варочного цеха, к которым могут быть присоединены выбросы от вынарной станции и цеха разложени сульфатного мыла, зат гиваютс эсгаустером через сборный коллектор в скруббер, орошаемый гор чим белым щелоком с температурой около 50-70° С. В скруббере щелочью поглощаютс в значительной степени все кислые газы: на 98% сероводород, на 95% метилмеркаптан. Белый щелок после сорбции этих газов может быть использован в варочном процессе. Прошедшие через скруббер газ должны быть охлаждены в поверхностном вод ном теплообменнике , причем конденсат отводитс в мерник дл белого щелока. Полученна таким образом парогазова смесь (содержит в основном диметилсульфид и следы метилмеркаптана) направл етс в испаритель, в котором залнт жидкий диметилсульфид - отброс цеха очистки сульфатного скипидара. В испарителе регулируетс уровень диметилсульфида oolOO мм, его температура, а также расход газов через него счэ10 л/мин. Это дает возможность регулировать содержание паров диметилсульфида в газе-носителе, пропуска часть газа мимо него. Полученна парогазова смесь через сепаратор дл брызгоуноса поступает в батарею окислительных .колонок дл сорбции паров диметилсульфида жидким окислителем.Gas emissions from the brewing room, to which emissions from the discharge station and the sulphate soap decomposition workshop can be attached, are drained by the stack through the collector collector into a scrubber irrigated with hot white liquor with a temperature of about 50-70 ° C. In the scrubber, the alkali is absorbed to a large extent all acid gases: 98% hydrogen sulfide, 95% methyl mercaptan. White liquor after sorption of these gases can be used in the cooking process. Gas that has passed through the scrubber must be cooled in a surface water heat exchanger, with condensate being drained into a measuring device for white liquor. The vapor – gas mixture thus obtained (containing mainly dimethyl sulfide and traces of methyl mercaptan) is sent to an evaporator, in which the liquid dimethyl sulfide is filled with waste from the sulphate turpentine purification shop. The evaporator regulates the level of oolOO mm dimethyl sulfide, its temperature, as well as the flow rate of gases through it sche 10 l / min. This makes it possible to adjust the vapor content of dimethyl sulfide in the carrier gas, passing some of the gas past it. The vapor – gas mixture obtained through the sprinkling separator enters the battery of oxidative columns for sorption of dimethyl sulfide vapor by a liquid oxidizer.
В процессе окислени паров диметилсульфкда строго регулируетс температура окислител и содержание диметилсульфида в парах . Окислительные колонки должны быть приспособлены дл наиболее эффективногоDuring the oxidation of dimethyl sulfide vapor, the temperature of the oxidizing agent and the content of dimethyl sulfide in the vapor are strictly controlled. Oxidation columns must be adapted to the most efficient
контакта между парогазовой и жидкой фазами , а также иметь циркул цию окислител с регулировкой его температуры при помощи вод ного или воздушного теплообменника. Оптимальна температура реакции околоcontact between the vapor – gas and liquid phases, and also to have an oxidant circulation with the regulation of its temperature using a water or air heat exchanger. The optimum reaction temperature is about
50° С. Главна задача процесса окислени состоит в возможно полном удалении паров диметилсульфида из газа-разбавител . В результате реакции жидкий окислитель превращаетс в водный раствор диметилсульфоксида , содержащий, кроме воды, небольшое количество (примерно 1:5-2%) метансульфокислоты .50 ° C. The main task of the oxidation process is to remove the dimethyl sulfide vapor from the diluent gas as completely as possible. As a result of the reaction, the liquid oxidant is converted into an aqueous solution of dimethyl sulfoxide, which contains, in addition to water, a small amount (approximately 1: 5-2%) of methanesulfonic acid.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU165713A1 true SU165713A1 (en) |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2649576C2 (en) * | 2012-10-29 | 2018-04-04 | Чайна Петролеум Энд Кемикал Корпорейшн | Dimethyl sulfoxide preparation method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2649576C2 (en) * | 2012-10-29 | 2018-04-04 | Чайна Петролеум Энд Кемикал Корпорейшн | Dimethyl sulfoxide preparation method |
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