US1761069A - Process of manufacture of pulp and paper - Google Patents

Process of manufacture of pulp and paper Download PDF

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Publication number
US1761069A
US1761069A US228104A US22810427A US1761069A US 1761069 A US1761069 A US 1761069A US 228104 A US228104 A US 228104A US 22810427 A US22810427 A US 22810427A US 1761069 A US1761069 A US 1761069A
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US
United States
Prior art keywords
pulp
paper
manufacture
washing
alkaline
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
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US228104A
Inventor
Booth Levis Miller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Priority to NL30428D priority Critical patent/NL30428C/xx
Application filed by Individual filed Critical Individual
Priority to US228104A priority patent/US1761069A/en
Priority to DEB144279D priority patent/DE537568C/en
Application granted granted Critical
Publication of US1761069A publication Critical patent/US1761069A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/70—Inorganic compounds forming new compounds in situ, e.g. within the pulp or paper, by chemical reaction with other substances added separately
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/001—Modification of pulp properties
    • D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
    • D21C9/004—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives inorganic compounds

Definitions

  • the recess of treating partially washed Bed pulp which has been digested by an alkaline process which consists of adding to. such pulp ferric sulphate, ferric chloride and chlorine.

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Description

Patented June 3, 1930 UNITED STATES PATENT orrlca No Drawing.
fibrous materials. The former were then LEVIS MILLER BOOTH, OF PLAINFIELD, NEW JERSEY PROCESS OF MANUFACTURE OF PULP AND PAPER Application filed October 22, 1927. Serial No. 228,104.
suitable quality of pulp. In my improved process I discontinue the washing after a fraction of the usual washing period or do not wash at all and add a coagulating substance, such as sulphate of aluminum, ferrous sulphate, or ferric sulphate and ferric separated from the latter by a washing procseparate process.
ess which results in the production of voluminous quantities of alkaline wash water carrying non-fibrous organic matter, as well as small amounts of fibrous material. processes heretofore practiced the alkaline wash water, together with its burdens of mineral and organic matter is either Wasted or treated by recovery or disposal processes. i I have found that it is possible to increase salt and chlorine.
the yield of paper or board and at the same 2 time to materially lessen the volume of wash water required by terminating the pulp washing process at a time when appreciable amounts of alkali still persist, which if left free in the pulp are detrimental in the sub-- or unwas 3o sequent paper or board making processes and to the product. I may eliminate washing entirely.
After digesting the pulpby an alkaline process I introduce into the pulp washer or washer beater or subsequently, an acid salt having a coagulating effect which permits the use of pulp containing more of alkali and non- By Claims.
fibrous matter than it. has been feasible to employ in the manufacture of paper or board 40 of the kind and quality cominonly acceptable in commerce. One example of the applica tion of m process which I have found to be practicab e is as follows:
For the manufacture of straw pa r or board straw is cooked in the presence 0 lime. The pulp is then washed for the urpose of removing the excess lime and nonbrous ma- 7 terial. "In one instance the washing process has heretofore been continued for a penod of approximately three hours to produce a chloride with the addition of chlorine. The treatment which I efi'ect causes the neutralization of the alkali to the required extent and further insures the retention of nonfibrous and fibrous material in the finished product which by processes heretofore used would be wasted or have to be recovered by :1
Besides conserving raw material I materially reduce the volume of Wash Water required or eliminate it entirely.
1. The process of treating partially washe or unwashed'pulp which has been digested by an alkaline process which consists of adding to such pulpa coagulating metallic 2. The process of treating partially washed or unwashed pulp which has been digested b y an alkaline process which consists of adding to such pulp ferrous sulphate and chlorine.
3. The recess of treating partially washed Bed pulp which has been digested by an alkaline process which consists of adding to. such pulp ferric sulphate, ferric chloride and chlorine.
4. The process of treating partially washed or unwashed pulp which has been digested 'by an alkaline process which consists of adding an acidifying substance and chlorine.
LEVIS MILLER BOOTH.
US228104A 1927-10-22 1927-10-22 Process of manufacture of pulp and paper Expired - Lifetime US1761069A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NL30428D NL30428C (en) 1927-10-22
US228104A US1761069A (en) 1927-10-22 1927-10-22 Process of manufacture of pulp and paper
DEB144279D DE537568C (en) 1927-10-22 1929-06-22 Process for neutralizing the alkali content of not washed or incompletely washed pulp obtained by alkali digestion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US228104A US1761069A (en) 1927-10-22 1927-10-22 Process of manufacture of pulp and paper

Publications (1)

Publication Number Publication Date
US1761069A true US1761069A (en) 1930-06-03

Family

ID=22855808

Family Applications (1)

Application Number Title Priority Date Filing Date
US228104A Expired - Lifetime US1761069A (en) 1927-10-22 1927-10-22 Process of manufacture of pulp and paper

Country Status (2)

Country Link
US (1) US1761069A (en)
NL (1) NL30428C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2731344A (en) * 1953-05-11 1956-01-17 Ralph H Mckee Process for making pulp and paper
US3044924A (en) * 1954-12-30 1962-07-17 Olin Mathieson Process for making cigarette paper and resulting paper

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2731344A (en) * 1953-05-11 1956-01-17 Ralph H Mckee Process for making pulp and paper
US3044924A (en) * 1954-12-30 1962-07-17 Olin Mathieson Process for making cigarette paper and resulting paper

Also Published As

Publication number Publication date
NL30428C (en)

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