US2008603A - Apparatus for refining pulp and the like - Google Patents

Apparatus for refining pulp and the like Download PDF

Info

Publication number: US2008603A
Authority: US; United States
Prior art keywords: pulp; bleaching; conduit; mixer; density
Prior art date: 1931-09-17
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

Application number

US564198A

Other languages

English (en)

Inventor

Thorne Carl Busch

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.)

1931-09-17

Filing date

1931-09-21

Publication date

1935-07-16

1931-09-21 Application filed by Individual filed Critical Individual

1931-09-21 Priority to US564198A priority Critical patent/US2008603A/en

1932-07-08 Priority to GB19410/32A priority patent/GB395512A/en

1932-07-08 Priority to GB19411/32A priority patent/GB395513A/en

1932-07-12 Priority to FR739909D priority patent/FR739909A/fr

1935-07-16 Application granted granted Critical

1935-07-16 Publication of US2008603A publication Critical patent/US2008603A/en

1952-07-16 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

238000007670 refining Methods 0.000 title description 6
238000004061 bleaching Methods 0.000 description 20
238000013019 agitation Methods 0.000 description 8
239000000463 material Substances 0.000 description 7
239000007844 bleaching agent Substances 0.000 description 5
239000003153 chemical reaction reagent Substances 0.000 description 5
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
230000005484 gravity Effects 0.000 description 4
238000005204 segregation Methods 0.000 description 4
239000000835 fiber Substances 0.000 description 3
229920002678 cellulose Polymers 0.000 description 2
239000001913 cellulose Substances 0.000 description 2
238000007599 discharging Methods 0.000 description 2
230000000694 effects Effects 0.000 description 2
238000010438 heat treatment Methods 0.000 description 2
230000007062 hydrolysis Effects 0.000 description 2
238000006460 hydrolysis reaction Methods 0.000 description 2
238000000034 method Methods 0.000 description 2
230000001105 regulatory effect Effects 0.000 description 2
238000005406 washing Methods 0.000 description 2
241001446467 Mama Species 0.000 description 1
229920001131 Pulp (paper) Polymers 0.000 description 1
235000011116 calcium hydroxide Nutrition 0.000 description 1
239000000920 calcium hydroxide Substances 0.000 description 1
239000003518 caustics Substances 0.000 description 1
239000007795 chemical reaction product Substances 0.000 description 1
238000010276 construction Methods 0.000 description 1
239000002826 coolant Substances 0.000 description 1
238000007865 diluting Methods 0.000 description 1
239000012530 fluid Substances 0.000 description 1
239000007788 liquid Substances 0.000 description 1
238000012423 maintenance Methods 0.000 description 1
239000000203 mixture Substances 0.000 description 1
230000003472 neutralizing effect Effects 0.000 description 1
230000002035 prolonged effect Effects 0.000 description 1
238000004076 pulp bleaching Methods 0.000 description 1

Images

Classifications

- 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
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1026—Other features in bleaching processes
- 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
- D21C9/10—Bleaching ; Apparatus therefor

Definitions

a relatively long, downwardly inclined conduit or passage is, provided along which a shallow layer of mixed low density pulp and bleaching medium is allowed to flow by gravity. Deepmasses of low density pulp are thus not formed so that segregation of the pulp is avoided withoutthe need for agitation.
the containers 6, III and it" may be conveniently arranged on an elevated platform l4 reached by stairs I5 from the top floor 2.
the tank 24 is-connected by a pipe 25 to a washer and density regulator 26 arranged to discharge on to .a belt conveyor 21 which discharges into amixer 28.
the mixer discharges into the upper end of a long, relatively shallow, inclined low density 40 bleaching conduit 29 which is preferably so constructed as to follow a tortuous path for the purpose of economizing floor space.
the conduit is, at one end, semicircular in plan, and connected with parallel, straight portions, which 45 in turn communicate with a semicircular portion of smaller diameter surrounding the tower IS.
the conduit 29 discharges through a regulator'- 30 into a trough 3
the conveyor discharges into a mixer 34 which in turn discharges into a conduit 35 which, in the illustrated form of the invention, is identical with 33 the conduit 29 and built immediatehr underneath it.
the device I8 is rotated slowly to regulate the flow of the material through the outlet I! without any substantial agitation.

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Paper (AREA)

US564198A 1931-09-17 1931-09-21 Apparatus for refining pulp and the like Expired - Lifetime US2008603A (en)

Priority Applications (4)

Application Number	Priority Date	Filing Date	Title
US564198A US2008603A (en)	1931-09-17	1931-09-21	Apparatus for refining pulp and the like
GB19410/32A GB395512A (en)	1931-09-17	1932-07-08	Process of bleaching pulp and the like
GB19411/32A GB395513A (en)	1931-09-17	1932-07-08	Apparatus for bleaching pulp and the like
FR739909D FR739909A (fr)	1931-09-17	1932-07-12	Procédé et dispositif de raffinage, en particulier de blanchiment de cellulose et de matières analogues

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
CA395512X		1931-09-17
US564198A US2008603A (en)	1931-09-17	1931-09-21	Apparatus for refining pulp and the like

Publications (1)

Publication Number	Publication Date
US2008603A true US2008603A (en)	1935-07-16

Family

ID=25682891

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
US564198A Expired - Lifetime US2008603A (en)	1931-09-17	1931-09-21	Apparatus for refining pulp and the like

Country Status (3)

Country	Link
US (1)	US2008603A (fr)
FR (1)	FR739909A (fr)
GB (2)	GB395513A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SE451606B (sv) *	1982-09-14	1987-10-19	Sca Development Ab	Sett vid blekning av hogutbytesmassor medelst peroxider

1931
- 1931-09-21 US US564198A patent/US2008603A/en not_active Expired - Lifetime
1932
- 1932-07-08 GB GB19411/32A patent/GB395513A/en not_active Expired
- 1932-07-08 GB GB19410/32A patent/GB395512A/en not_active Expired
- 1932-07-12 FR FR739909D patent/FR739909A/fr not_active Expired

Also Published As

Publication number	Publication date
GB395512A (en)	1933-07-20
GB395513A (en)	1933-07-20
FR739909A (fr)	1933-01-19

Publication	Publication Date	Title
US2249263A (en)	1941-07-15	Apparatus for treating oils
US3754417A (en)	1973-08-28	Oxygen bleaching
US2359543A (en)	1944-10-03	Apparatus for continuous digestion of fibrous material
US3963561A (en)	1976-06-15	Recirculation of unconsumed oxygen pulp bleaching gas
US1982002A (en)	1934-11-27	Method of bleaching paper pulp
US1938802A (en)	1933-12-12	Continuous process and apparatus for pulping fibrous materials
US2876098A (en)	1959-03-03	Process of and apparatus for the continuous manufacture of cellulose or hemicellulose from cellulosic fibrous materials
US1450326A (en)	1923-04-03	Apparatus for treating oils
US3586600A (en)	1971-06-22	Continuous digesting apparatus
US2008603A (en)	1935-07-16	Apparatus for refining pulp and the like
US1989571A (en)	1935-01-29	Method of and apparatus for bleaching and refining pulp
US1720549A (en)	1929-07-09	Apparatus for and process of mixing
US1236002A (en)	1917-08-07	Coating apparatus.
US2458170A (en)	1949-01-04	Continuous fat splitting
US2041597A (en)	1936-05-19	Digesting process and apparatus
US2342225A (en)	1944-02-22	Paper pulp preparation
US2920697A (en)	1960-01-12	Apparatus for the production of cellulose
US1454610A (en)	1923-05-08	Bleaching pulp and apparatus therefor
US1942622A (en)	1934-01-09	Paper manufacture
US4093511A (en)	1978-06-06	Apparatus for oxygen bleaching of pulp including recirculation of exhaust gases
US1481106A (en)	1924-01-15	Preparation of liquid-bleach solutions
US2150733A (en)	1939-03-14	Process for refining glyceridetype oils
US1753228A (en)	1930-04-08	Method of and apparatus for bleaching paper pulp
US2198709A (en)	1940-04-30	Pulp bleaching apparatus
US2290980A (en)	1942-07-28	Apparatus for treating liquids