CN101440582B - Treatment vessel for straw or other light bulky material - Google Patents
Treatment vessel for straw or other light bulky material Download PDFInfo
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- CN101440582B CN101440582B CN2008101682411A CN200810168241A CN101440582B CN 101440582 B CN101440582 B CN 101440582B CN 2008101682411 A CN2008101682411 A CN 2008101682411A CN 200810168241 A CN200810168241 A CN 200810168241A CN 101440582 B CN101440582 B CN 101440582B
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- crust
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Abstract
A method to chemically treat light weight, bulky cellulosic material including: introducing the material to an upper inlet of a substantially vertical treatment vessel; maintaining the material in the vessel at a pressure of at least 20 bar and at a temperature of at least 200 DEG C; treating the material with a cooking liquor in the vessel; moving the material past at least one anti-compression ring on an inside surface of the vessel, as the material moves downward through the vessel; agitating the material in the vessel, and discharging the treated material from a lower discharge port of the vessel.
Description
The rights and interests that the application requires is that submit on October 10th, 2007, application number is 60/978,913 the interim patent of the U.S., its full content is incorporated this paper by reference into.
Technical field
The present invention relates to a kind of treatment process that lightweight, big volume cellulosic material (varicosity fiber cellulosic material) is converted into paper pulp such as straw or other non-wood cellulosic material.Be particularly related to a kind of chemical treatment technology of handling above-mentioned material.
Background technology
Straw and other lightweights, big volume cellulosic material are transformed slurry to be used for papermaking, construction material or other goods based on slurry.These materials are through chemistry and mechanical treatment, and the chemical treatment of said material is particularly including corrosion chemical agent and short process time.
The chemical treatment container of handling straw and other lightweights, big volume cellulosic material provides and these materials has been carried out electrochemical conditions and short-term retention time strict in chemical treatment technology such as the hydrolysis.。A kind of traditional chemical treatment container comprises a series of parallel horizontal ducts of arranging, as the Pandia boiling vessel.Pipeline connect those conduits and provide one be used for the raw material circulation, the passage of flowing through from the flow export of a conduit to the inflow entrance of next root conduit.The comparatively complicated mechanical assembling of arranging of these conduits is to support the Pandia boiling vessel.The raw material that standing to handle flow to next conduit from a conduit.
In each conduit, raw material are saved to 30 minutes retention time less with 200 ℃ temperature, the pressure of 20 crust (making an appointment with 290 pounds (psi) per square inch).The inner screw of every conduit moves raw material via every conduit.Above-mentioned screw rod blocks raw material easily and needs to be safeguarded.
The multitube road makes the Pandia boiling vessel become the numerous and jumbled device of the mechanical type that has a lot of movable parts such as spiral.Yet for container handling, having less movable part is the long-term needs of people, is such for the Pandia boiling vessel that a plurality of screw transporter are arranged at least.People hope to have a kind of chemical treatment container that can handle lot of materials in addition, can day handle 400 tons as being kept at time time of staying of four minutes in the container.Therefore, be badly in need of the relatively simple and capable chemical treatment container of handling jumbo straw or the big volume cellulosic material of other lightweights of a kind of structure.
Summary of the invention
A kind of container simple in structure is developed and is used for chemical treatments some lightweight, big volume cellulosic material such as straw or other non-wood cellulosic material.Said container is the cylinder bodily form, and this container has an inter-process chamber, and this band sealing top, inter-process chamber and bottom can exist at least 20 crust to be preferably pressure and at least 100 ℃ of preferred temperature of 200 ℃ of 40 crust to guarantee inside.Said inter-process chamber is vertical basically, for example becomes 10 ° with vertical direction, and 1.5 to 4 meters of inter-process chamber diameters are high 0.5 to 20 meter, and above-mentioned size depends on the volumetric flow that reaches of expectation and the raw material retention time in said inter-process chamber.
Raw material can get into said container via upper entrance.Treat liquid (if need, these liquid are preferably the acidic chemical medicament to support hydrolysis, although use WITH AMMONIA TREATMENT also to be fit to) and water are impregnated in to promote the processing in said inter-process chamber and to bleed off raw material through hanging down outlet.Compression ring (anti-compression ring) can be set at higher relatively position, said inter-process chamber, and said shaker arm can be included in from the compression ring closer.The bottom outlet of said inter-process chamber can comprise is convenient to discharge raw-material device; One dimension sidewall transition like said inter-process chamber is flowed to promote material; Transport material the whirligig of said outlet to, and when raw material are discharged from said inter-process chamber or assembly, be used for spraying into liquid to improve the baffle plate of liquor ratio in the raw material to raw material.
A kind of method that is used for chemical treatment lightweight, big volume cellulosic material that has been developed comprises: above-mentioned material is introduced the basic vertically upper entrance of container handling; With the pressure of at least 20 crust and at least 200 ℃ temperature said material is remained in the said container; In said container, handle said material with cooking liquor; When said material is downward through said container, drive said material and be installed on the compression ring of said inner surface of container through at least one, said compression ring comprises that one leans to the oblique sidewall on said container inwardly, on the said oblique sidewall shaker arm is installed; In said container, stir said material, and discharge the material that was processed from the low outlet of said container through said shaker arm.
A kind of container handling that is used for chemical treatment lightweight, big volume cellulosic material that has been developed; Said container comprises: band apical end, bottom and the basic vertically container that extends to the sidewall of bottom from the top, and wherein said container moves at least at least under the condition of the temperature of the pressure of 20 crust and 200 ℃; Be positioned at the material inlet port on said container top, wherein said inlet port receives said cellulosic material; Be positioned at said container or with material feed system that said material inlet port matches on the cooking liquor inlet port; At least one is positioned at the compression ring of said side wall inner surfaces, and said compression ring comprises that one leans to the oblique sidewall on said container inwardly; Be used to stir shaker arm raw-material in the said container, that be bordering on said compression ring most, said shaker arm is installed on the said oblique sidewall, and the outlet that is positioned at said container lower position place.
Description of drawings
Fig. 1 for a kind of chemical treatment that is used for light material, big volume cellulosic material such as digestion to generate sketch map like the container handling of slurry;
Fig. 2 is a kind of schematic cross-section that is used for exemplary compression ring as shown in Figure 1;
Fig. 3 is the side view of the outlet part of container as shown in Figure 1.
The specific embodiment
The present invention is elaborated with specific embodiment below in conjunction with Fig. 1-3.
The schematically for example clear a kind of chemical treatment container 10 of Fig. 1, this chemical vessel exploitation is used for handling light material, big volume cellulosic material, like straw (being referred to as the light fibre cellulosic material).Through an example shows, the density of light fibre cellulosic material is 50-120 kilogram/every cubic metre, and this density value is less than the density of traditional wood chip.Among the disclosed herein embodiment, said container 10 is a vertical reactor, can day handle 400 tons of light fibre cellulosic material, and 14 cubic metres volume is arranged.Said container 10 is can be the closed container of a cylindrical shape, and said cylinder has the constant circular cross section of a radius, and this cylinder has the top and bottom that sealed.
In a concrete embodiment, cylinder describes that the diameter of device 10 is 1.5 meters, high 8 meters.In further embodiments, the diameter of container 10 is a value in 1 to 10 meter in scope, and perhaps narrower range is 3 to 4 meters.The height of container 10 can be in following scope value: 0.5-40 rice.The diameter of said container 10, highly can select according to flow through raw material volumetric flow rate and raw material retention time in container 10 of container 10 of predetermined design.
The shape of said container 10 can be different with exemplary cylindrical container embodiment disclosed herein.Said container 10 can be that non-circular transverse cross-section and different size are that size is non-constant, like cone shape, the cubic bodily form or ellipse and the shape more complicated than simple circle cylinder, rectangle or ellipse (cross section).A kind of preferable shape of said container 10 is single container, and is different with the multitube road in the prior art container handling.
Said container 10 must be able to bear the pressure of at least 20 crust and the working environment of 200 ℃ of temperature, and is preferably the pressure (about 580 pound per square inches (psi)) of 40 crust and 300 ℃ temperature.These temperature and pressures are suitable for the treatment process of light fibre cellulosic material such as hydrolysis.Any liquid that is added into said container like solution or the cooling liquid for the ease of carrying raw material to add through the container outlet, is preferably water or acid liquid.Some organic working solutions also can be used in the aforesaid liquid like acetic acid, formic acid, ethanol or methyl alcohol.In one embodiment, container 10 is used under the acidic treatment condition through non-wood cellulosic material such as hydrolysis process such as straw.In another embodiment, the retention time of raw material in container is preferably 10 to 120 minutes, and the longer the better the retention time here.
The operation of said container 10 can comprise the conventional equipment that is used for controlling fiber cellulosic material flow in a chemical treatment container, like the material content controller.Said control system can monitor said the employing like the solid content in the container of survey meter, and is provided for controlling the feedback signal from raw material feed system 12 gets into the raw material speed of said container and outlet 20 is discharged the rate of discharge of slurries from the bottom.In addition, power sensor such as deformeter can be included in the said container to monitor pressure and the motive force in the said container.Further, the speed of rotation of the auger conveyor of sensor in can the for example said feed system 12 of moving component in can monitoring said system and the motion of agitator.
The retention time of said container inner cellulose material and temperature preferably are controlled at a unified level.Retention time and temperature controlling are of value to the product yield that the chemical reaction of raw material and liquid is designed in advance in the said container.Further, thus retention time and temperature controlling be need to avoid that the minimizing that addition reaction causes reactor product output takes place in said container.
Said container 10 comprises the feed system 12 that is used for the light fibre cellulosic material.Said feed system 12 can be conventional feed system, like feed bin, be used for steam and liquid turnover so that the fragment auger conveyor of raw-material conveying and the inlet port through said container with a plurality of.Said container 10 at its top or top be provided with inlet port 14.Said feed system 12 can be used to from the feed bin of atmospheric pressure operation to said container inlet port 14 conveying fiber cellulosic material.Said inlet port 14 is under the pressurized environment that for example 200 ℃ temperature and 20 is clung to, and this environment also is the operating environment of said container.
Said container 10 is one and can keeps cellulosic material to unify the pressurizing vessel of data rate stream through said container.Preferably, it is that the amount of liquid of the band chemical reagent of slurry is minimized so that heat the pending raw material of said container and keep its temperature that the liquid that is introduced into container for example is used for the digestion cellulosic material.Thermal source 16 be introduced into said container like vapours, hot gas and other thermal vector.
Said container 10 can have the inter-process chamber 18 of band upright side walls, and raw material flow to the material outlet 20 that is positioned at said container bottom downwards in said inter-process chamber 18.The position of sidewall differing heights is provided with a plurality of compression rings 22 or other suitable rings to reduce the compression of the material in the said container along said inter-process chamber.These rings help cellulosic material through said container.Said ring arrangement is arranged at the differing heights of said inter-process chamber, preferably is arranged at the top such as the first half.
Fig. 2 shows an exemplary compression ring 22, and this compression ring 22 can be that a cross sectional shape is the leg-of-mutton annular distance of cardinal principle.The top 24 of said ring is connected with the inwall 26 of said container, and the first vertical circular column leg 28 also is connected with inwall 26.Said compression ring 22 can also comprise that one leans to the oblique sidewall 30 on said container inwardly.Said compression ring 22 helps the unified pressure of the material stream in the whole height of said container.The material that this hoop moves down along said oblique sidewall 30 apply light pressure.Supported the material of said container upper height and reducing the blanking power that is produced owing to the upper height material by the said institute's applied pressure that encircles material.When material flows through said ring, because that material has flow through the lower margin of said oblique sidewall 30 is blank and expand into larger-diameter said container inner wall 26 places, said compression stress is removed fast.The compression ring that relatively is fit to is 6,280,569 and 5,454 in the patent No., is described in 490 the patent.
It is interior with the motion of help material through said container that agitator 32 can be included in said inter-process chamber 18, and, the motion of the compression ring of particularly flowing through.Said agitator can be set at compression ring 22 near, and be attached thereto as much as possible and connect.Said agitator can be clavate thing or the axle shape thing that is connected with the surface such as the oblique sidewall 30 of said container, and this helps making as shaking, have bad luck mutually stirring movement such as moving and vibration.The motion of said agitator is used to cellulosic material to promote the motion through the material of said container.
Fig. 3 show one be installed on said container lower position exemplary discharger 36; In said discharger; Inwall is transited into the wall of one dimension convergence and lateral projections from cylindrical wall, to such an extent as to a rhombus sawtooth (a diamond shaped indention) is formed on the opposite side of discharger.Said discharger 36 can comprise and is installed on the horizontal feed screw rod 38 that closes on discharger bottom.The discharger 36 that is positioned at said container bottom can be like United States Patent (USP) 5,500, and 083,5,628,873 and 5,617,975 described abilities promote mobile device.
Except the horizontal feed screw rod, can also select rotating blade 40 (can be conventional design) to be installed on the lower position of said container.Said scraper plate can be shifted cellulosic material onto be positioned at said container bottom central discharge point 42.
Though the present invention has combined to be considered at present the most practical and preferred embodiment is described; But should understand; The invention is not restricted to the disclosed embodiments, but opposite, be intended to cover the spirit and interior various improvement and the equivalent arrangements of scope that are included in accompanying claims.
Claims (17)
1. the method for a chemical treatment lightweight, big volume cellulosic material comprises:
Above-mentioned material is introduced the upper entrance of vertical basically container handling;
When said material is downward through said container, drive said material and be installed on the compression ring of said inner surface of container through at least one, said compression ring comprises that one leans to the oblique sidewall on said container inwardly, on the said oblique sidewall shaker arm is installed;
In said container, stir said material through said shaker arm, and
Discharge the material that was processed from the low outlet of said container.
2. method according to claim 1 is characterized in that: said method further is included in the said container and keeps said material with the pressure of 20 crust and at least 140 ℃ temperature at least.
3. method according to claim 1 is characterized in that: said method further is included in the said container and handles said material with cooking liquor.
4. method according to claim 1 is characterized in that: said method further is included in and allows automatic hydrolysis in said material, to take place in the said container.
5. method according to claim 1 is characterized in that: said lightweight, big volume cellulosic material comprise at least a in straw, straw, bagasse, the maize straw.
6. method according to claim 1 is characterized in that: stir the material in the said container closing on said compression ring place.
7. method according to claim 1 is characterized in that: said method comprises that further said container is maintained at the pressure of at least 20 crust and at least 200 ℃ temperature.
8. method according to claim 1 is characterized in that: said container is a single chamber container that to be used for said materials chemistry digestion be slurry.
9. method according to claim 1 is characterized in that: said compression ring is arranged at the top of said container.
10. method according to claim 1 is characterized in that: said method further is included in and keeps said material to be no more than 30 minutes in the said container.
11. method according to claim 1 is characterized in that: said processing comprises the said material of hydrolysis.
12. a container handling that is used for chemical treatment lightweight, big volume cellulosic material, said container comprises:
Band apical end, bottom and the basic vertically container that extends to the sidewall of bottom from the top, wherein said container moves at least at least under the condition of the temperature of the pressure of 20 crust and 100 ℃;
Be positioned at the material inlet port on said container top, wherein said inlet port receives said cellulosic material;
The liquid inlet of the material feed system that is arranged in said container or matches with said material inlet port;
At least one is positioned at the compression ring of said side wall inner surfaces, and said compression ring comprises that one leans to the oblique sidewall on said container inwardly;
Be used to stir shaker arm material, that be bordering on said compression ring most in the said container, said shaker arm is installed on the said oblique sidewall, and
Be positioned at the outlet at said container lower position place.
13. container handling according to claim 12 is characterized in that: said container is a cylinder, and the height of this container is that 0.5 to 20 meter, diameter are 3 to 4 meters.
14. container handling according to claim 12 is characterized in that: said shaker arm is applicable to stirring movement one oblique sidewall of said compression ring.
15. container handling according to claim 12 is characterized in that: said container is maintained at the pressure of at least 20 crust and at least 100 ℃ temperature.
16. container handling according to claim 12 is characterized in that: said container is a single chamber container that to be used for said materials chemistry digestion be slurry.
17. container handling according to claim 12 is characterized in that: said compression ring is positioned at the top of said container.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US97891307P | 2007-10-10 | 2007-10-10 | |
| US60/978,913 | 2007-10-10 | ||
| US12/206,365 | 2008-09-08 | ||
| US12/206,365 US7988822B2 (en) | 2007-10-10 | 2008-09-08 | Treatment vessel for straw or other light bulky material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101440582A CN101440582A (en) | 2009-05-27 |
| CN101440582B true CN101440582B (en) | 2012-07-18 |
Family
ID=40725170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101682411A Expired - Fee Related CN101440582B (en) | 2007-10-10 | 2008-10-06 | Treatment vessel for straw or other light bulky material |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101440582B (en) |
| ZA (1) | ZA200807859B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4028171A (en) * | 1974-07-05 | 1977-06-07 | Kamyr Aktiebolag | Method for continuous treatment of fiber material in a vertical array |
| US6280569B1 (en) * | 1998-10-15 | 2001-08-28 | Andritz-Ahlstrom Inc. | Compression rings for column relief in continuous cooking vessels |
-
2008
- 2008-09-12 ZA ZA200807859A patent/ZA200807859B/en unknown
- 2008-10-06 CN CN2008101682411A patent/CN101440582B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4028171A (en) * | 1974-07-05 | 1977-06-07 | Kamyr Aktiebolag | Method for continuous treatment of fiber material in a vertical array |
| US6280569B1 (en) * | 1998-10-15 | 2001-08-28 | Andritz-Ahlstrom Inc. | Compression rings for column relief in continuous cooking vessels |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA200807859B (en) | 2009-10-28 |
| CN101440582A (en) | 2009-05-27 |
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Granted publication date: 20120718 Termination date: 20151006 |
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