SU52978A1 - Method for fermenting waste sulphite cellulose liquor - Google Patents
Method for fermenting waste sulphite cellulose liquorInfo
- Publication number
- SU52978A1 SU52978A1 SU52978A1 SU 52978 A1 SU52978 A1 SU 52978A1 SU 52978 A1 SU52978 A1 SU 52978A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- liquor
- waste sulphite
- sulphite cellulose
- cellulose liquor
- fermenting waste
- Prior art date
Links
- LSNNMFCWUKXFEE-UHFFFAOYSA-L Sulphite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 title description 5
- 229920002678 cellulose Polymers 0.000 title description 3
- 239000001913 cellulose Substances 0.000 title description 3
- 239000002699 waste material Substances 0.000 title description 3
- 238000000855 fermentation Methods 0.000 description 6
- 230000004151 fermentation Effects 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- RBTARNINKXHZNM-UHFFFAOYSA-K Iron(III) chloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L Calcium hydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 238000010908 decantation Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000005591 charge neutralization Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001264 neutralization Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Description
Изобретение относитс к области . использовани отбросных сульфитцеллюлозных щелоков, дава новый способ их сбраживани .The invention relates to the field. the use of waste sulphite-cellulose liquor, giving a new way to ferment it.
Обычно, сбраживание сульфитных щелоков проводитс приемами нейтрализации мелом и известковым молоком , продувки воздухом, последующего отстаивани от выпадающего шламма и перевода в бродильные чаны. Лигносульфонова кислота, наход ща с в сульфитном щелоке в количестве до 60-70% от сухого остатка и не подвергающа с брожению, вл етс баластом, замедл ющим процесс брожени и снижающим процент сбраживаемости.Usually, the fermentation of sulphite liquors is carried out by methods of neutralization with chalk and lime milk, blowing with air, subsequent sedimentation from falling out slurry and transfer to fermentation tanks. Lignosulfonic acid, which is in sulphite liquor in an amount of up to 60-70% of the dry residue and is not fermentable, is a ballast that retards the fermentation process and reduces the fermentation rate.
Автором был разработан способ сбраживани сульфитных щелоков с предварительным удалением лигносульфоновой кислоты из них действием хлорного железа.The author developed a method for fermenting sulfite liquors with preliminary removal of lignosulfonic acid from them by the action of ferric chloride.
Было установлено, что при оптимальном подборе количества хлорного железа, употребленного дл выделени липюсульфоновой кислоты, сбраживание идет скорее, нежели в обычном щелоке, и процент сбраживаемости повышаетс . Сущность предлагаемого способа, таким образом, заключаетс в следующем.It was found that with an optimal selection of the amount of ferric chloride used to extract lipusulfonic acid, the fermentation proceeds rather than in the ordinary liquor, and the percentage of fermentation increases. The essence of the proposed method is thus as follows.
Сульфитный щелок нейтрализуетс мелом и известковым молоком, продуваетс воздухом и освобождаетс от щламма декантацией. Затем к нему добавл ют определенное количество хлорного железа и снова производ т нейтрализацию содой. Выпавщий осадок железной соли лигносульфоновой кислоты отдел ют декантацией и фильтрованием (этот осадок может быть использован, например, дл получени ароматических веществ, или же дл выделени свободной лигносульфоновой кислоты), а фильтрат подвергаетс сбраживанию как обычно.The sulphite liquor is neutralized with chalk and lime milk, blown with air and released from the slime by decantation. Then a certain amount of ferric chloride is added to it and neutralized again with soda. The precipitated lignosulfonic acid iron salt precipitate is separated by decantation and filtration (this precipitate can be used, for example, to produce aromatic substances, or to separate free lignosulfonic acid), and the filtrate is fermented as usual.
Предмет изобретени .The subject matter of the invention.
Способ сбраживани отбросного сульфитцеллюлозного щелока, отличающийс тем, что щелок после обычной хлорным . .laMMci оираоатывают железом дл осаждени A method for fermenting waste sulphite cellulose liquor, characterized in that the liquor is after ordinary bleach. .laMMci oiraoatyvay iron to precipitate
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