SU71643A1 - Method of sulfite pulping of fir-tree and pine-tree wood - Google Patents

Method of sulfite pulping of fir-tree and pine-tree wood

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Publication number
SU71643A1
SU71643A1 SU4700355040A SU355040A SU71643A1 SU 71643 A1 SU71643 A1 SU 71643A1 SU 4700355040 A SU4700355040 A SU 4700355040A SU 355040 A SU355040 A SU 355040A SU 71643 A1 SU71643 A1 SU 71643A1
Authority
SU
USSR - Soviet Union
Prior art keywords
tree
calcium
chips
sulphate
wood
Prior art date
Application number
SU4700355040A
Other languages
Russian (ru)
Inventor
П.С. Ларин
Original Assignee
Larin P S
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Larin P S filed Critical Larin P S
Priority to SU4700355040A priority Critical patent/SU71643A1/en
Application granted granted Critical
Publication of SU71643A1 publication Critical patent/SU71643A1/en

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Claims (1)

Изобретение относитс  к методам пе реработки древесины в целлюлозно-бумажной промьшшенности. Предлагаемый способ сульфитной варки древесины ели и сосны заключаетс  в том, что щепу предварительно пропитывенют раствором сульфата щелочного мегап- л а, после чего подвергают варке с бисуль фитом кальци . Пропитывание щепы раств(ом сульфата натри  производитс  при нагревании до (без давлени ) или при небольщом давлении, соответствующем темпер туре 11О-120 С. Возможно применение предварительной вакуумизации аппарата дл  гфопитки, с целью улучшени  процеоса пропитки. После пропитки раствор сульфата сл ваетс  и щепа с содержанием неболыиого количества впитавшегос  в нее сульфата поступает в варочный котел, в который заливаетс -бисульфит кальци  обычной концентрации . В котеп подаетс  пар и содержимое нагреваетс , причем в самой щепе происходит обменна  реакци , при кот(Ч5ой образуетс  натриева  соль и выпадает гипс. Зта реакци  способствует значительному уск рению процесса варки. Формула изобретени  Способ сульфитной варки древесины ели и сосны, отличающийс  тем, что соответствующую щепу при1иты вают раствс ом сульфата щелочного ме- талла , после чего подвергают варке с бисульфитом кальци .This invention relates to methods for processing wood in the pulp and paper industry. The proposed method for the sulphite cooking of spruce and pine wood is that the chips are pre-impregnated with a solution of an alkali sulfate sulphate, and then subjected to cooking with calcium bisulphite. Chips are impregnated with the solution (ohm sodium sulphate is produced by heating to (without pressure) or at a low pressure corresponding to a temperature of 11 ° C to 120 ° C. containing a small amount of sulphate which has been absorbed into it, enters the digester, into which calcium calcium bisulfite is poured at a normal concentration. Steam is supplied to the boiler and the contents are heated, and in the chips itself It takes an exchange reaction, the cat (the sodium salt forms and gypsum drops out. This reaction contributes to a significant acceleration of the cooking process. Formula of the invention then cooked with calcium bisulfite.
SU4700355040A 1947-03-15 1947-03-15 Method of sulfite pulping of fir-tree and pine-tree wood SU71643A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU4700355040A SU71643A1 (en) 1947-03-15 1947-03-15 Method of sulfite pulping of fir-tree and pine-tree wood

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU4700355040A SU71643A1 (en) 1947-03-15 1947-03-15 Method of sulfite pulping of fir-tree and pine-tree wood

Related Child Applications (1)

Application Number Title Priority Date Filing Date
SU823490156A Addition SU1052417A2 (en) 1982-09-07 1982-09-07 Mandrel for making tubular articles

Publications (1)

Publication Number Publication Date
SU71643A1 true SU71643A1 (en) 1978-09-15

Family

ID=20436394

Family Applications (1)

Application Number Title Priority Date Filing Date
SU4700355040A SU71643A1 (en) 1947-03-15 1947-03-15 Method of sulfite pulping of fir-tree and pine-tree wood

Country Status (1)

Country Link
SU (1) SU71643A1 (en)

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