CN101349025A - Impregnation vessel with convergence side relief and method for heat injection at convergence - Google Patents
Impregnation vessel with convergence side relief and method for heat injection at convergence Download PDFInfo
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- CN101349025A CN101349025A CNA2008101330412A CN200810133041A CN101349025A CN 101349025 A CN101349025 A CN 101349025A CN A2008101330412 A CNA2008101330412 A CN A2008101330412A CN 200810133041 A CN200810133041 A CN 200810133041A CN 101349025 A CN101349025 A CN 101349025A
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- container
- cellulosic material
- contraction section
- hot fluid
- chamber
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Abstract
An impregnation vessel including: a vessel container including an upper inlet to receive cellulosic material; a lower discharge port to discharge the cellulosic material from a discharge section of the vessel container; a convergence section internal to the vessel through which passes a flow of the cellulosic material in the vessel; a cavity between an internal wall of the vessel and the convergence section, wherein the cavity has a lower opening to the cellulosic material in the vessel and an upper section shielded from the flow of cellulosic material in the vessel, and an input port in the vessel and opening to the cavity, wherein the input port is connectable to a source of hot liquid to be added to the cellulosic material in the vessel.
Description
Intersect and apply for
[0001] the application's application number of requiring on July 16th, 2007 to submit to is No.60/949, the application number that 987 U.S. Provisional Patent Application and on June 18th, 2008 submit to is 12/141, the rights and interests of 244 the formal patent application of the U.S. by introducing this two file, are incorporated its full content into.
Technical field
[0002] the present invention relates to be used for continuously cooking (for example still being not limited to sulfate process or soda processes digestion process) cellulosic material and prepare (for example wood chip and non-wood material comprise annual plant and bagasse etc.) steeper of paper pulp.Specifically, the present invention relates to hot fluid, for example interpolation of liquid or steam increases heat to give the cellulosic material in the steeper.
Background technology
[0003] steeper described material of preliminary treatment before fibrous material for example is provided to boiling vessel.In the time of in steeper, cellulosic material is immersed in liquid and/or the steam and comes heating material.U.S. Patent No. 4,746 has illustrated a kind of example that is applicable to the conventional container of steeper in 400, and its disclosed container has the bottom scraper plate, sprays hot fluid under scraper plate, is used for cellulosic material is gone out from container.U.S. Patent No. 5,500 also shows the example of the traditional container that is applicable to steeper in 083 and 5,628,873, and the bottom of its disclosed container has the peacekeeping two dimension contraction section of band sidepiece decompression device, at present with
The trade mark of wood chip case is by the Andritz Inc of Golan, USA New York Fa Ersi. sells.
[0004] cellulosic material flows to the boiling vessel that moves usually under the temperature higher than steeper from steeper.Cellulosic material heats in boiling vessel.Though the heating of some fibre cellulosic material has taken place in steeper, and the material in the steeper heats in boiling vessel usually.
[0005] temperature that improves cellulosic material in the steeper can reduce to be increased to the required heat of material in the boiling vessel.If hot fluid adds the downstream part of steeper to, then the hot fluid of Tian Jiaing can form the flow of heated fluid of the steeper of upwards flowing through.Such flow of heated fluid may be disturbed the uniform treatment of the cellulosic material expectation of the container of flowing through downwards.Therefore, adding hot fluid to steeper is of little use.
Summary of the invention
[0006] a kind of steeper is developed, and this steeper comprises: container tank, and it has the upper entrance that is used to receive cellulosic material; Port is discharged in the bottom, is used for discharging cellulosic material from the discharge section of described container tank; Contraction section in the container, the cellulosic material flow in the described container flow through in it; Chamber between described container inner wall and described contraction section, this chamber has the lower openings of leading to the cellulosic material in the described container and shelters from the top of the cellulosic material flow in the described container, also has the input port on described container, it leads to described chamber, and can be connected to the hot fluid source of adding the hot fluid of giving the cellulosic material in the described container.
[0007] described contraction section can only be restrained along a direction in described steeper, and comprises conical wall, and this conical wall top seal is in the inwall of described container, and the bottom is radially being leaned on the position of lining than described inwall.Described chamber is between the conical wall of described container inner wall and described contraction section.This chamber can be lower than the liquid level in the described container, and is arranged on described container along on the mid portion of height trisection.Described hot fluid source is supplied with hot fluid under the temperature of the exhaust temperature that is higher than the cellulosic material of discharging from described container, for example supply with hot fluid under at least 120 degrees centigrade temperature.
[0008] a kind of steeper is developed, and this steeper comprises: container tank, and it has the upper entrance that is used to receive cellulosic material; Port is discharged in the bottom, is used for discharging cellulosic material from the discharge section of described container tank; One dimension contraction section in the container, the cellulosic material flow in the container flow through in it; Chamber between described container inner wall and described contraction section, this chamber has the lower openings of leading to the described cellulosic material in the described container and shelters from the top of the cellulosic material flow in the described container, also has the input port on described container, it leads to described chamber, and can be connected to the hot fluid source of adding the hot fluid of giving the cellulosic material in the described container, add described chamber under the temperature of described hot fluid cellulosic material mean temperature in being higher than described container.
[0009] a kind of in having the steeper of inner contraction section the method for heating cellulosic material develop, this method comprises: cellulosic material is introduced upper entrance in the described steeper; Add warmed-up liquid to described container, make liquid level be formed on container top; When described cellulosic material is flowed through described container downwards, use the described cellulosic material of described warmed-up liquid heat; Cellulosic material in the container of described liquid level is spilt from the funnel that described inner contraction section forms; Hot fluid is introduced a chamber in the described container, and this chamber is in described contraction section back, and described hot fluid is introduced described chamber being higher than under the temperature of described warmed-up fluid temperature; Described hot fluid is added described cellulosic material flow to described inner contraction section downstream from described chamber; Use described hot fluid to heat the cellulosic material flow in described inner contraction section downstream, and the discharge port the described container bottom below described chamber and inner contraction section is discharged described cellulosic material.
Description of drawings
Fig. 1 is the schematic side elevation according to an embodiment of the steeper with unidirectional contraction section of the present invention.
Fig. 2 is the vertical view cutaway drawing according to the embodiment of the steeper with unidirectional contraction section of the present invention.
Fig. 3 is the schematic side elevation according to an embodiment of the steeper with orthogonal direction contraction section of the present invention.
Fig. 4 is the vertical view cutaway drawing according to the embodiment of the steeper with orthogonal direction contraction section of the present invention.
The specific embodiment
[0014] Fig. 1 is used for the schematic diagram of steeper 10 that preliminary treatment is called the cellulosic material of wood chip here.This container can be highly to be that 100 feet (30 meters) or higher, diameter are 70 inches (2 meters) or bigger and can handle the metal buckets of 700 tonnes of (700mtpd) paper pulp every day.Wood chip flows into simultaneously serially, flows through and flows out steeper.The pretreated wood chip that flows out steeper 10 can flow to the upper entrance of continuous steamer 46.
[0015] wood chip can be provided to steeper 10 from a wood chip source 12, and this wood chip source can be that a wood chip case or pre-steams container, or only is one to be used for the stowed position (if for example not using the wood chip case) of wood chip.Steeper has the top wood chip inlet 14 that receives wood chip, and it can comprise the pulpous state wood chip of liquid according to selective reception.Form wood chip charge level 16 and liquid levels 18 in steeper, wherein the wood chip charge level can be above liquid levels.Liquid level 18 in the container can form by flash distillation solution (for example white or black liquor) and/or the steam that adds from warmed-up liquid and/or vapour source 19, to reach the purpose of heating wood chip.The gas volume 20 of the container above the liquid level 18 be preferably maintained in the range of from about 100 degrees centigrade (℃) and atmospheric pressure under.Warmed-up liquid and/or steam can flow directly into the gas volume 20 of steeper 10.
[having in 0016 container] one dimension contraction section 22, it is arranged in the liquid part 24 that is lower than liquid level 18 of container.Preferably, contraction section 22 is in container the latter half, and at bottom rotor segment 25 or be used for wood chip being moved to above other devices of bottom outlet 27.For example, contraction section 22 can be arranged in container along its height trisection mid portion, be preferably placed at container under the center on the short transverse, and container along its height trisection the bottom on.
[0017] one dimension contraction section 22 may be embodied as a hollow transition portion 26, and it has the open-top 28 of circular cross section and the open bottom 30 of substantial rectangular cross section basically.Contraction section 22 comprises transition portion 26, and it has some relative sidewalls 29, and these sidewalls are not vertical, and gradually tapered, and they are generally about 20 to 35 degree with respect to the angle that vertical direction was, and are preferably 25 to 30 degree.Sidewall 29 can straight extension across described container.Described wall can be arranged to when being straight when looking perpendicular to a direction of container 10 axis, and on the direction that parallels to the axis and along transition portion 26 look tapered (continuously or segmentation).
[0018] opposed side edges of sidewall 29 can be connected in container inner wall 32.The top of opening wide 28 of transition portion 26 can have bending to be consistent with chamber wall 32, and is welded to chamber wall to provide continuous water-tight seal between container and contraction section 22.United States Patent (USP) 5,500 discloses the structure of the one dimension contraction section of wood chip container in 083 and 5,628,873.Support or gusset 31 can extend from chamber wall 32, and extend to the conical wall 54 of transition portion, to support contraction section in container.
[0019] Fig. 2 is the vertical view cutaway drawing of steeper 10, in order to show contraction section 22.The several relative sidewall 29 of contraction section is taper, and can comprise upper taper sidewall sections 50, straight upright side walls part 52 and lower taper sidewall sections 54.The one dimension characteristic that Fig. 2 demonstrates contraction section is that the bottom of transition portion is narrower along a direction than top 28, and the same wide with top 28 along another vertical direction.
[0020] the one dimension contraction section 22 of transition portion impels flow through container and flow through transition portion 26 of wood chip downwards.This contraction section can provide the wood chip flow velocity in the container to regulate, and makes wood chip that enough retention times be arranged in container 10.And one dimension contraction section 22 makes the more difficult obstruction of wood chip or forms bridge joint than the conical contraction section of two dimension convergence.
[0021] chamber 34 is formed between the sidewall 29 of inner container wall 32 and transition portion 26.Chamber 34 is the blocked area of transition portion 26 sidewalls 29 back in the container.Sidewall shelters from the wood chip that flows downward in the container, makes it can not enter chamber 34.Because chamber 34 is below tapering transition sidewall 29, therefore described wall prevents that hot-fluid from upwards flowing and flowing from chamber above transition portion 26.Can have two chambers 34 in the container in the two opposite sides of container, one of them chamber is in each back of two sidewalls 29 of contraction section 22.
[0022] chamber 34 provides the additional heat fluid to add wherein and don't the zone of causing liquid splatter in container 10 upper areas.The hot fluid that is added for example is black liquor or white liquid, and it enters in the chamber 34, and mixes with liquid and wood chip that outlet 30 from following transition portion flows upward to the chamber.The hot-fluid that is formed by hot fluid can not upwards flow through container, because chamber is covered by the tapered sidewalls 29 of transition portion.
[0023] hot fluid source 42 (Fig. 1) has the pipeline 40 that hot fluid is sent to chamber 34.Fluid source 42 can be the superheated fluid from boiling vessel 46, specifically the hot wash fluid of extracting from boiling vessel 46 bottoms.If can not obtain enough excessive black liquor, then low-pressure steam 48 can be used for heating the fluid 42 that is pumped into chamber 34 by pipeline 40.The fluid that other can be had enough heats can be introduced in the chamber 34 in addition.
[0024] fluid temperature (F.T.) that is provided in the chamber 34 can remain on for example 120 degrees centigrade, and this temperature can be higher than the temperature in the container steam dome 20.If allow to flow into steam dome 20, then this warmed-up liquid and/or steam may flash distillations.In chamber, introduce hot fluid and just can stop any upwards mobile of this fluid with sidewall 29.
[0025] will be from the hot fluid of fluid source 42, be preferably black or white liquid, introduce chamber 34, introducing place is preferably above the outlet 30 of transition portion 26.Fluid is introduced chamber can not disturb wood chip to be downward through container,, and separate with chamber 34 because wood chip spills through the funnel that contraction section 22 constitutes.Chamber 34 makes the fluid 42 can be with static relatively, and for example the chamber of Ting Zhiing flows to into container.Hot fluid is diffused into from transition portion through exporting the 30 wood chip streams of discharging from described chamber.
[0026] temperature of adding the fluid 42 in the chamber 34 to preferably is higher than the mean temperature of wood chip in the container 10 and through the temperature of the wood chip of outlet 38.Wood chip in the fluid 42 heating steepers 10 that add.The wood chip of waiting to be sent to boiling vessel 46 needs heating, because boiling vessel moves being higher than under the temperature of steeper usually.
[0027] in chamber 34, introduces hot fluid 42 and can not influence traditional tapping equipment 25 (for example scraper plate or other may comprise the mechanical device of drainage system) the booster action of wood chip through the motion of the outlet 38 of container.
[0028] chamber 34 can flow in the container 10 fluid 42 and the wood chip that do not cause channel district or hot-fluid to form and pass in the container rises.Another advantage of adding hot fluids 42 to chamber 34 is effectively to use obtainable superheated liquid in the pulping equipment, and described superheated liquid can comprise and is in the liquid that is higher than under 100 degrees centigrade.
[0029] do not use contraction section 22 if superheated liquid adds in the steeper 10, channel district (zone that wood chip uniformity and uniformity are interrupted) or hot-fluid then may occur with sidewall.Directly add hot liquid to pass steeper wood chip stream from container entrance and may cause hot-fluid wood chip stream, this can cause the heat in the wood chip cylinder to raise, and the result causes the wood chip efficiency of heating surface very low.
[0030] fluid is added to hot fluid can be mixed with other fluids in the chamber, and be diffused into the wood chip that flows out transition portion outlet 30 in very big zone.Pass steam that container side wall directly enters the hot fluid of the stream of wood chip in the container and then may disturb evenly moving and handling of the wood chip that flows through steeper.In chamber 34, introduce hot fluid and avoid in wood chip stream, forming hot fluid steam, and the danger to the interference of evenly moving and handling of the wood chip that flows through container is minimized.
[0031] Fig. 3 is the schematic side elevation with a part of steeper 50 of orthogonal direction contraction section 52.Fig. 4 is this vertical view cutaway drawing with steeper 50 of orthogonal direction contraction section 52.The orthogonal direction contraction section has the transition portion 54 that reduces to pass the flow path of container at two orthogonal directions.Flow path is reduced to contraction section from the entire container cross-sectional area at the top of transition portion 54 and exports the less circular cross-sectional area in 56 places.Preferably, transition portion 54 comprises the diamond shaped side plate 58 that is combined by crooked side plate 60.Allow hot fluid, for example the hot fluid inlet 62 that enters of hot liquid and/or steam 64 is arranged in the annular compartment 66 between the outer surface of side plate 58,60 of the madial wall 68 of container 50 and contraction section 52.This chamber is provided at the wood chip of the container of flowing through and the outer impregnation zone of direct flow path of fluid downwards.When (preferred rounded cross section flows out) flowed out in its outlet 54 from contraction section 52, wood chip and fluid mixed with the hot fluid that flows downward from chamber.Hot fluid heating further flows down to the discharger 70 of scraper plate for example and flow to the wood chip of container outlet 72 in container 50.
[0032] though the front in conjunction with think the most practical at present and preferred embodiment invention has been described, but be to be understood that, the invention is not restricted to the disclosed embodiments, but opposite, be intended to cover the various improvement and the equivalent arrangements that are included in the claims spirit and scope.
Claims (23)
1. steeper comprises:
Container tank has the upper entrance that is used to receive cellulosic material;
Port is discharged in the bottom, is used for discharging cellulosic material from the discharge section of described container tank;
It is characterized in that also comprising:
Contraction section in the container, the cellulosic material flow in the container is passed through in this contraction section;
Chamber between container inner wall and described contraction section, this chamber have the lower openings of leading to the cellulosic material in the described container and shelter from the top of the cellulosic material flow in the container,
Input port on the container, it leads to described chamber, and this input port can be connected to the hot fluid source of adding the hot fluid of giving the cellulosic material in the described container.
2. steeper according to claim 1, wherein, described contraction section in described container along unidirectional convergence.
3. steeper according to claim 1, wherein, described contraction section direction along two mutual quadratures in described container restrains.
4. steeper according to claim 1, wherein, described contraction section comprises conical wall, and its top seal is in the inwall of described container, and the bottom is positioned at from described inwall radially inwards, and described chamber is between the described conical wall of the inwall of described container and described contraction section.
5. steeper according to claim 1, wherein, described contraction section and chamber are arranged under the liquid level of described container.
6. steeper according to claim 1, wherein, described hot fluid source is supplied with hot fluid under the temperature of the exhaust temperature that is higher than the cellulosic material of discharging from described container.
7. steeper according to claim 1, wherein, described hot fluid source is supplied with hot fluid under at least 120 degrees centigrade temperature.
8. steeper according to claim 1, wherein said contraction section are the one dimension contraction section, add described chamber under the temperature of the mean temperature of the cellulosic material of described hot fluid in being higher than container.
9. steeper according to claim 8, wherein, described one dimension contraction section comprises conical wall, and its top seal is in the inwall of described container, and the bottom is positioned at from described inwall radially inwards, and described chamber is between the described conical wall of the inwall of described container and described contraction section.
10. steeper according to claim 8, wherein, described contraction section and chamber are arranged under the liquid level of described container.
11. steeper according to claim 8, wherein, described hot fluid source is supplied with hot fluid under the temperature of the discharge temperature that is higher than the cellulosic material of discharging from described container.
12. steeper according to claim 8, wherein, described hot fluid source is supplied with hot fluid under at least 120 degrees centigrade temperature.
13. the method for a heating cellulosic material in having the steeper of inner contraction section, described method comprises:
Cellulosic material is introduced upper entrance in the described steeper;
Add warmed-up liquid to described container, liquid level is formed on the top of described container;
When described cellulosic material is flowed through described container downwards, use described warmed-up fluid to heat described cellulosic material;
It is characterized in that this method also comprises:
The flow of the cellulosic material of subsurface described inner contraction section described in the container is flow through in detection;
Hot fluid is introduced the chamber that one in the described container is positioned at described contraction section back, and this hot fluid is being higher than the described chamber of introducing under the temperature of described warmed-up fluid temperature;
Described hot fluid is added to the described cellulosic material flow in described inner contraction section downstream from described chamber;
Use described hot fluid to heat the cellulosic material flow in described inner contraction section downstream;
Container bottom outlet below being positioned at described chamber and inner contraction section is discharged described cellulosic material.
14. method according to claim 13, wherein, described cellulosic material is introduced container continuously and is discharged from the container.
15. method according to claim 13, wherein, described contraction section in described container along folk prescription to convergence.
16. method according to claim 13, wherein, described contraction section has conical wall, its top seal is in the inwall of described container, and the bottom is positioned at than described inwall radially by, lining, described chamber is between the conical wall of described container inner wall and described contraction section, and the described hot fluid that adds this chamber to is by described conical wall shield.
17. method according to claim 13, wherein, described contraction section is along the convergence of the direction of two mutual quadratures, and described cellulosic material flow is discharged by the circular cross section of funnelling when described contraction section is discharged.
18. method according to claim 13, wherein, described hot fluid adds described chamber under the temperature of the discharge temperature that is higher than the described cellulosic material of discharging from described container.
19. method according to claim 13, wherein, described hot fluid adds described chamber under at least 120 degrees centigrade.
20. method according to claim 13 comprises that also the cellulosic material of will discharge is sent to boiling vessel.
21. method according to claim 20, wherein, described hot fluid comprises the hot black liquor that extracts from described boiling vessel.
22. method according to claim 20, wherein, described hot fluid comprises the hot black liquor that extracts from described boiling vessel bottom.
23. method according to claim 13 also comprises the cellulosic material that introducing is provided from a wood chip case.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US94998707P | 2007-07-16 | 2007-07-16 | |
| US60/949,987 | 2007-07-16 | ||
| US12/141,244 | 2008-06-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101349025A true CN101349025A (en) | 2009-01-21 |
Family
ID=40263877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101330412A Pending CN101349025A (en) | 2007-07-16 | 2008-07-08 | Impregnation vessel with convergence side relief and method for heat injection at convergence |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101349025A (en) |
| ZA (1) | ZA200805458B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102666975A (en) * | 2009-12-21 | 2012-09-12 | 安德里兹技术资产管理有限公司 | Method and process for dry discharge in a pressurized pretreatment reactor |
| CN103097606A (en) * | 2010-07-09 | 2013-05-08 | 美卓造纸机械(瑞典)公司 | Method and system for impregnating chips |
| CN103443354A (en) * | 2011-03-25 | 2013-12-11 | 安德里兹有限公司 | Reactor vessel having single convergence sidewall plates |
-
2008
- 2008-06-23 ZA ZA200805458A patent/ZA200805458B/en unknown
- 2008-07-08 CN CNA2008101330412A patent/CN101349025A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102666975A (en) * | 2009-12-21 | 2012-09-12 | 安德里兹技术资产管理有限公司 | Method and process for dry discharge in a pressurized pretreatment reactor |
| CN102666975B (en) * | 2009-12-21 | 2015-08-05 | 安德里兹技术资产管理有限公司 | For the treatment of the reactor of lignocellulosic material and the method for hydrolyzing biomass material |
| CN103097606A (en) * | 2010-07-09 | 2013-05-08 | 美卓造纸机械(瑞典)公司 | Method and system for impregnating chips |
| CN103097606B (en) * | 2010-07-09 | 2015-11-25 | 维美德公司 | For flooding the method and system of wood chip |
| CN103443354A (en) * | 2011-03-25 | 2013-12-11 | 安德里兹有限公司 | Reactor vessel having single convergence sidewall plates |
| CN103443354B (en) * | 2011-03-25 | 2016-03-02 | 安德里兹有限公司 | There is the reactor vessel of single convergence sidewall paneling |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA200805458B (en) | 2009-03-25 |
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