Intergral pulp mill and method of constructing an integral mill

• US 5,632,859 A
• Filed: 06/04/1991
• Issued: 05/27/1997
• Est. Priority Date: 06/07/1990
• Status: Expired due to Fees

• Current Assignee: Ahlstrom Corporation
• Original Assignee: Ahlstrom Corporation
• Inventors: Sulander, Tarmo, Junttila, Vesa, Kiiskil a, Erkki, Heitto, Pertti
• Primary Examiner(s): ALVO, MARC S
• Application Number:
  US07/710,071
• Time in Patent Office: 2,184 Days
• Field of Search: 162/52, 162/246, 162/238, 162/49, 162/62, 162/253, 162/198, 162/61, 901/7, 414/222, 414/225
• US Class Current: 162/49
• CPC Class Codes: D21B 1/00 Fibrous raw materials or their mechanical treatment pretreatment of the finely-divided materials before digesting D21C1/00; methods of beating or refining pulp D21D1/00; purification of the pulp suspension by mechanical means D21D5/00
• CPC Class Codes: E04H 5/02 Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories buildings forming part of cooling plants E04H5/10

Abstract

A mill for the processing and production of wood pulp is contained substantially entirely within a single, integral structure that defines a unitarily-covered space substantially bounding and enclosing the mill. The mill includes a main control room or station for overall monitoring and control of pulp processing operations in the mill, the main control station being disposed substantially centrally within the covered space, and a plurality of processing stations at which various pulp processing operations take place in a generally sequential manner or order. The plural processing stations are disposed within the covered space and radially outwardly from the main control station, with individual ones of the processing stations being arranged and located in the covered space relative to others of the processing stations so that as the pulp undergoes the sequential processing operations at the plural processing stations the pulp proceeds substantially circumferentially about the main control station between and among the individual processing stations.

Claims

1. A mill for the processing and production of wood pulp, comprising:

a single, integral structure defining a unitarily-covered space substantially bounding and enclosing the mill;

a main control station for overall monitoring and control of pulp processing operations in the mill, said control station being disposed substantially centrally within said covered space; and

a plurality of processing stations at which various respective pulp processing operations substantially sequentially take place, said plural processing stations being disposed within said covered space and radially outwardly from said main control station, individual ones of said processing stations being arranged and located in said space relative to others of said processing stations so that as the pulp undergoes said sequential processing operations at said plural processing stations the pulp proceeds substantially circumferentially about said main control station between and among said individual processing stations in said unitarily-covered space.

2. A pulp mill in accordance with claim 1, said structure comprising a substantially continuous outer wall forming a circumferentially arcuate boundary of said covered space.

3. A pulp mill in accordance with claim 1, said structure comprising an outer wall bounding and defining a substantially circular circumferential periphery of said covered space.

4. A pulp mill in accordance with claim 1, said plural processing stations comprising a station for production of chemicals, a water treatment station, a main liquor storage section, a lime kiln, a pulp cooking station, an evaporation plant, a recovery boiler, a turbine section, a chip feeding station, an effluent treatment section, a bleaching section, a high consistency pulp storage section, and a dryer section.

5. A pulp mill in accordance with claim 1, further comprising pulp conveyance means in said covered space operable for selectively conveying pulp to and between said individual processing stations of said pulp mill.

6. A pulp mill in accordance with claim 5, wherein said pulp conveyance means comprises a crane system.

7. A pulp mill in accordance with claim 5, said pulp conveyance means being disposed on diametrically-opposite sides of said main control station.

8. A pulp mill in accordance with claim 1, further comprising means for integrated and centralized control and treatment of atmospheric emissions from said mill.

9. A pulp mill in accordance with claim 1, further comprising means for integrated and centralized treatment of process liquors produced in said pulp processing operations.

10. A pulp mill in accordance with claim 1, further comprising means for centralized treatment of waste materials produced in said pulp processing operations.

11. A pulp mill in accordance with claim 1, further comprising means for centralized control and treatment of mill effluents for discharge to waters.

12. A pulp mill in accordance with claim 1, further comprising means for centralized treatment of air in the mill.

13. A pulp mill in accordance with claim 1, further comprising means for centralized and integrated treatment of all odorous gases produced in said pulp processing operations.

14. A pulp mill in accordance with claim 1, further comprising a partition wall separating at least one of said individual processing stations from an immediately-adjacent other one of said processing stations.

15. A pulp mill in accordance with claim 1, further comprising means located at least partly within said covered space for enabling access to the mill by transport vehicles for transporting materials into and out of the mill.

16. A pulp mill in accordance with claim 15, said access enabling means comprising railroad tracks.

17. A method of constructing a pulp mill, comprising the steps of:

constructing a single, integral structure defining a unitarily-covered space substantially bounding and enclosing the mill;

locating a main control station, for overall monitoring and control of pulp processing operations in the mill, substantially centrally within said covered space; and

locating a plurality of processing stations, at which various respective pulp processing operations substantially sequentially take place, within said covered space and radially outwardly from the main control station, said step of locating the plurality of processing stations further comprising locating individual ones of the plural processing stations relative to others of the processing stations such that as the pulp undergoes said sequential processing operations at the plural processing stations the pulp proceeds substantially circumferentially about the main control station between and among the individual processing stations in the unitarily-covered space.