CN207987609U - A kind of plant fiber processing steam explosion device - Google Patents
A kind of plant fiber processing steam explosion device Download PDFInfo
- Publication number
- CN207987609U CN207987609U CN201820337119.1U CN201820337119U CN207987609U CN 207987609 U CN207987609 U CN 207987609U CN 201820337119 U CN201820337119 U CN 201820337119U CN 207987609 U CN207987609 U CN 207987609U
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- Prior art keywords
- annular
- storehouse
- outer storehouse
- steam explosion
- sealed groove
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- 238000004880 explosion Methods 0.000 title claims abstract description 36
- 239000000835 fiber Substances 0.000 title claims abstract description 26
- 238000007789 sealing Methods 0.000 claims abstract description 37
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 2
- 229920006395 saturated elastomer Polymers 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000002028 Biomass Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 229920005610 lignin Polymers 0.000 description 3
- 230000009172 bursting Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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Abstract
The utility model is related to a kind of plant fiber processing steam explosion devices, including：One outer storehouse, lower open end set interconnecting piece, and both ends open up the first sealed groove, and side wall opens up air admission hole, and a high temperature and pressure air inlet pipe is inserted in air admission hole；One annular cover plate is covered on outer storehouse upper open end, and the second sealed groove is opened up positioned at both ends on the inside of outer storehouse upper open end；Storehouse in one is inserted in outer storehouse；One bottom cover, is covered on interior storehouse lower port, and upper surface both ends set the first seal convexity；One annular bottom plate is covered on the upper ends Nei Cang, and upper surface both ends set the second seal convexity respectively, and lower surface both ends set third sealed groove；One inner cover, is covered on annular bottom plate lower surface, and upper surface both ends set third seal convexity；At least one the first sealing strips；One second sealing strip；An at least third sealing strip.The steam explosion device can realize that plant fiber carries out steam explosion under the action of mesohigh saturated vapor, and fiber in plant fiber is made to be detached with other substances, realize the real steam explosion processing of plant.
Description
Technical field
The utility model belongs to steam explosion technology field, and in particular to a kind of plant fiber processing steam explosion device.
Background technology
Steam explosion, i.e. steam blasting are pretreated to biomass progress using the blast process of steam ejection principle realization
A kind of technology.
Its technological essence is：The steam molecule instantaneous relase for infiltering inside plant tissues is finished, internal steam work is made to convert
For mechanical energy and biomass histocyte interlayer is acted on, to be decomposed raw material by purpose with less energy.Both due to it
Chemically treated secondary pollution problem is avoided, and solves the problems, such as that current biological treatment efficiency is low, is biomass conversion neck
The most promising preconditioning technique in domain.
Fiber in plant cell is bonded by lignin, and under high temperature, high steam effect, cellulose crystallity improves,
The degree of polymerization declines, hemicellulose fraction degradation, lignin softening, and lateral strength of connection declines, or even softening is plastic, when full of pressure
When the material sudden pressure reduction of steam, gas play in hole expansion generates " explosion " effect, can be partially stripped lignin, and by raw material
Tearing is fiber fines.
Existing steam explosion device, product is in quick-fried moment, and opening speed is slow, discharge area is small so that steam explosion technology becomes
Spray quick-fried technology, cannot achieve plant treatment function.
For steam explosion device, it is primarily present following patent document at present：
The Chinese patent of Publication No. 106040720A discloses a kind of garbage disposal high steam demolition set, including
Divide cylinder barrel sealing device, pneumatic opener and buffer unit；It includes upper cylinder barrel, lower cylinder barrel to divide cylinder barrel sealing device；Lower cylinder barrel
It is slidably connected with upper cylinder barrel, when cylinder barrel slides into the top instantly, lower cylinder barrel closes discharge port, upper cylinder barrel sealing；Instantly cylinder barrel
When sliding into bottom, discharge port is opened completely, and steam and material is discharged；The pneumatic opener is connect with lower cylinder barrel, is used
It is slided up and down in the lower cylinder barrel of driving.The patent uses multi-direction discharging, increases exhaust discharging area, can increase the discharging of equipment
Efficiency；Pneumatic opener response speed is improved, buffer unit is provided with dividing below cylinder barrel sealing device, is used for lower cylinder barrel
When sliding down to extreme position, to lower cylinder barrel into row buffering；Meanwhile the patent has dust-blowing device, it is ensured that in structure not
Buildup.However, the high steam demolition set that the patent is provided, is used for garbage disposal, and for the processing of plant fiber, it is difficult
To achieve the purpose that quick bursting.
Utility model content
The purpose of this utility model is to provide a kind of plant fiber processing steam explosion devices, and it is difficult to solve existing steam explosion device
The problem of to realize quick bursting.
To achieve the above object, a kind of plant fiber processing steam explosion device provided by the utility model, the steam explosion
Device can realize the Core Feature in steam explosion technology：Plant fiber carries out steam explosion under the action of mesohigh saturated vapor, makes
The fiber obtained in plant fiber is detached with other substances, realizes the real steam explosion processing of plant.
Specifically, the technical solution adopted in the utility model is：
A kind of plant fiber processing steam explosion device, the steam explosion device include：One outer storehouse, shape are a tube body, vertically
It places, outer storehouse lower open end outer wall is circumferential outside outer storehouse to be convexly equipped with the lower interconnecting piece of an annular, and lower surface two is connected under the annular
Close to the position of lower open end, the interconnecting piece under annular circumferentially offers at least one annular first sealed groove, the sides Wai Cang at end
Side wall offers an air admission hole, and a high temperature and pressure air inlet pipe is inserted in the air admission hole, forms being passed through for high temperature and high pressure gas；One ring
Shape cover board is covered on the outer storehouse upper open end and is detachably connected with the formation of outer storehouse, and annular cover plate inner ring extends on outer storehouse
On the inside of open end, and annular cover plate is located at both ends lower surface on the inside of outer storehouse upper open end and circumferentially offers an annular along annular cover plate
Second sealed groove；Storehouse in one, shape is a tube body, vertical to place, and port is plugged by the outer storehouse lower open end sliding thereon
There are gaps on the inside of outer storehouse and between upper port and outer storehouse upper open end, form an accommodating cavity, and interior storehouse lower port is located at outer storehouse
On the outside of lower open end, there are gaps between interior storehouse side wall and outer storehouse side wall；One bottom cover is covered on the interior storehouse lower port, bottom cover
Upper surface is circumferentially convexly equipped with and matched first seal convexity of first sealed groove along bottom cover；One annular bottom plate, setting
In in the accommodating cavity, being removably covered on the interior storehouse upper port and there are gap, the rings between both ends and outer storehouse inner wall
Shape plate upper surface is circumferentially convexly equipped with one and matched second seal convexity of second sealed groove along annular bottom plate, annular
Bottom plate lower surface both ends circumferentially offer at least one annular third sealed groove close to the position of inner ring along annular bottom plate；In one
Lid, is removably covered on the annular bottom plate lower surface, and upper surface is circumferentially convexly equipped with recessed with third sealing along inner cover
The matched third seal convexity of slot, upper surface middle part are provided with a seal groove, a sealing strip be embedded at the seal groove formed it is close
Envelope；At least one the first sealing strips, cross sectional shape is "convex" shaped, is embedded at respectively in first sealed groove, forms the
Sealed connection between one sealed groove and the first seal convexity；One second sealing strip, cross sectional shape are "convex" shaped, are embedded at
In second sealed groove, the sealed connection between the second sealed groove and the second seal convexity is formed；At least a third is close
Strip of paper used for sealing, cross sectional shape are "convex" shaped, are embedded in the third sealed groove, form third sealed groove and third sealing is convex
Sealed connection between rising.
Further, the outer storehouse upper open end outer wall is circumferential outside outer storehouse is convexly equipped with the upper interconnecting piece of an annular, in annular
Interconnecting piece both ends offer connecting hole on one respectively, and accordingly the annular cover plate both ends open up and the upper connecting hole phase respectively
Corresponding upper connection through-hole, two fixing pieces are inserted in connection through-hole, upper connecting hole, formed between annular cover plate and outer storehouse can
Dismantling connection.
Further, the interior storehouse upper port inner wall is convexly equipped with an annular protrusion in the horizontal direction, the annular protrusion upper table
Face both ends vertically offer an installing blind respectively, and accordingly, the annular bottom plate both ends open up and the peace respectively
Fill the matched mounting hole of blind hole, fixed link is inserted in mounting hole and installing blind, formed between annular bottom plate and interior storehouse can
Dismantling connection.
Further, the sides Nei Cang side wall be provided with one for lead to steam and discharge can open-type door, the air inlet
Hole is opened on outer storehouse side wall corresponding with this.
Further, the quantity of first sealed groove is 2, is arranged along the lower interconnecting piece spaced radial of the annular,
Accordingly, the first seal convexity quantity is 2, the first sealing strip quantity is 2.
Further, the quantity of the third sealed groove is 4, is opened in annular bottom plate lower surface both ends respectively, often
2, end, horizontally spaced arrangement, accordingly, the third seal convexity quantity is 4, third sealing strip quantity is 4
It is a.
Further, interconnecting piece one end vertically offers a pilot hole under the outer storehouse, accordingly, the bottom cover
On offer and be inserted in guide through hole and pilot hole with the pilot hole correspondingly guide through hole, a guide post, formed internal
The guiding that storehouse is slided along outer storehouse.
Further, the inner cover lower surface is equipped with an arc convex.
The utility model has the following advantages that：
1, using specialized structure design and material selection, warehouse is enable to bear the high temperature and pressure needed for plant reaction；
2, using double container structure, by being used cooperatively for Nei Cang and outer storehouse, enable warehouse overall separation, reaction
Material quickly leaves pressure-bearing position, realizes steam acting；
3, using the sealing material of special formula so that the air-tightness of equipment, the road of safety greatly improve, and
Inside and outside storehouse upper-lower seal position contacts simultaneously, ensures that compressed dimension is identical, bearing capacity is consistent；
4, by using completely new sealing structure and sealing strips, the convertibility of sealing strip is improved so that equipment
It safeguards more convenient；
5, first~third sealing strip is all made of type tee section, and section is simple, easy to process and replace；
6, the setting of guide post is detached from interior storehouse and realizes guiding, guiding in the process, ensures the smooth disengaging in interior storehouse；
7, the utility model is created more mature and stable than the prior art, has put forward device security and operability a, more
Meet the newer requirement of equipment；
8, steam explosion this process is preferably realized, makes steam explosion reaction more fully completely.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of plant fiber processing steam explosion device provided by the utility model.
Specific implementation mode
The utility model is described further below by specific embodiment, but embodiment is not intended to limit this practicality newly
The protection domain of type.
Embodiment 1
Referring to Fig. 1, a kind of plant fiber processing steam explosion device provided by the utility model, the steam explosion device packet
It includes：One outer storehouse 1, shape is a tube body, vertical to place, and 1 lower open end outer wall of outer storehouse is circumferential outside outer storehouse to be convexly equipped under an annular
Interconnecting piece 11, close to the position of lower open end, the interconnecting piece under annular circumferentially offers at interconnecting piece 11 lower surface both ends under the annular
At least one annular first sealed groove 12,1 side side wall of outer storehouse offer an air admission hole 13, and a high temperature and pressure air inlet pipe 14 is inserted
Set on the air admission hole 13, being passed through for high temperature and high pressure gas is formed；One annular cover plate 2, be covered on 1 upper open end of outer storehouse and with
Outer storehouse 1 forms and is detachably connected, and 2 inner ring of annular cover plate extends on the inside of 1 upper open end of outer storehouse, and annular cover plate 2 is located at outer storehouse 1
Both ends lower surface circumferentially offers annular second sealed groove 21 along annular cover plate on the inside of upper open end；Storehouse 3 in one, shape are
One tube body, vertical to place, port by 1 lower open end of outer storehouse sliding is inserted in 1 inside of outer storehouse and upper port and outer storehouse 1 thereon
There are gaps between upper open end, form an accommodating cavity 31, and 3 lower port of interior storehouse is located on the outside of 1 lower open end of outer storehouse, 3 side of interior storehouse
There are gaps between 1 side wall of wall and outer storehouse；One bottom cover 4 is covered on 3 lower port of interior storehouse, and 4 upper surface of bottom cover is along bottom cover circumferential direction
It is convexly equipped with and first sealed groove, 12 matched first seal convexity (not shown)；One annular bottom plate 5 is set to described
In accommodating cavity 31, removably it is covered between 3 upper port of interior storehouse and 1 inner wall of both ends and outer storehouse that there are gap, the annulars
5 upper surface of bottom plate be circumferentially convexly equipped with along annular bottom plate one with second sealed groove, 21 matched second seal convexity (not
Diagram), it is close that 5 lower surface both ends of annular bottom plate circumferentially offer at least one annular third close to the position of inner ring along annular bottom plate
Seal groove 51；One inner cover 6, is removably covered on 5 lower surface of the annular bottom plate, upper surface be circumferentially convexly equipped with along inner cover with
51 matched third seal convexity (not shown) of the third sealed groove, upper surface middle part are provided with a seal groove and (do not scheme
Show), a sealing strip 52 is embedded at the seal groove and forms sealing；At least one the first sealing strips 71, cross sectional shape is "convex" shaped,
It is embedded at respectively in first sealed groove 12, the sealing formed between the first sealed groove 12 and the first seal convexity connects
It connects；One second sealing strip 72, cross sectional shape are "convex" shaped, are embedded in second sealed groove 21, and the second sealing is formed
Sealed connection between groove 21 and the second seal convexity；At least a third sealing strip 73, cross sectional shape are "convex" shaped, are embedded
In in the third sealed groove 51, the sealed connection between third sealed groove 51 and third seal convexity is formed.
Further, 3 side side wall of the interior storehouse be provided with one for lead to steam and discharge can open-type door 33, it is described into
Stomata 13 is opened on 1 side wall of outer storehouse corresponding with the door 33.
Further, the described 1 time interconnecting piece in outer storehouse, 11 one end vertically offers a pilot hole 16, accordingly, institute
It states to offer on bottom cover 4 and is inserted in guide through hole 41 with correspondingly guide through hole 41 of the pilot hole 16, a guide post 8 and leads
To hole 16, the guiding that internal storehouse 3 is slided along outer storehouse 1 is formed.
Further, 6 lower surface of the inner cover is equipped with an arc convex 61.
Wherein, interior storehouse 3 and outer storehouse 1 select professional boiler material, thickness surplus to reach 2 times of design pressures.
Interior storehouse 3 and 1 upper-lower seal position of outer storehouse contact simultaneously, ensure that compressed dimension is identical, bearing capacity is consistent.
Embodiment 2
1 upper open end outer wall of the outer storehouse is circumferential outside the outer storehouse 1 to be convexly equipped with the upper interconnecting piece 15 of an annular, interconnecting piece in annular
15 both ends offer connecting hole 151 on one respectively, and accordingly 2 both ends of the annular cover plate open up and the upper connecting hole respectively
151 corresponding upper connection through-holes 22, two fixing pieces 23 are inserted in connection through-hole 22, upper connecting hole 151, form annular cover plate
Being detachably connected between 2 and outer storehouse 1.Remaining is the same as embodiment 1.
Embodiment 3
3 upper port inner wall of the interior storehouse is convexly equipped with an annular protrusion 32 in the horizontal direction, 32 upper surface two of annular protrusion
End vertically offers an installing blind 321 respectively, and accordingly, 5 both ends of the annular bottom plate open up and the peace respectively
321 matched mounting hole 521 of blind hole is filled, fixed link 53 is inserted in mounting hole 521 and installing blind 321, forms annular bottom plate 5
Being detachably connected between interior storehouse 3.
Wherein, fixed link 53 is bolt, and distance is designed according to pressure vessel design standards, and it is straight that pitch-row is less than 4.5 times of bolts
Diameter.Remaining is the same as embodiment 1.
Embodiment 4
The quantity of first sealed groove 12 is 2, along the lower interconnecting piece spaced radial arrangement of the annular, accordingly,
The first seal convexity quantity is 2,71 quantity of the first sealing strip is 2.Remaining is the same as embodiment 1.
Embodiment 5
The quantity of the third sealed groove 51 is 2, is arranged along 5 spaced radial of annular bottom plate, accordingly, the third
Seal convexity quantity is 2,73 quantity of third sealing strip is 2.Remaining is the same as embodiment 1.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be made some modifications or improvements, or some function module is deleted, this is to ability
It is obvious for field technique personnel.Therefore, these modifications made on the basis of without departing from the spirit of the present invention
Or improve or delete, belong to the range of the requires of the utility model protection.
Claims (8)
1. a kind of plant fiber processing steam explosion device, which is characterized in that the steam explosion device includes：
One outer storehouse, shape is a tube body, vertical to place, and outer storehouse lower open end outer wall circumferential be convexly equipped under an annular outside outer storehouse connects
Socket part, close to the position of lower open end, the interconnecting piece under annular circumferentially offers at least one at connection lower surface both ends under the annular
A annular first sealed groove, the sides Wai Cang side wall offer an air admission hole, and a high temperature and pressure air inlet pipe is inserted in the air admission hole,
Form being passed through for high temperature and high pressure gas；
One annular cover plate is covered on the outer storehouse upper open end and is detachably connected with the formation of outer storehouse, and annular cover plate inner ring extends
On the inside of to outer storehouse upper open end, and annular cover plate is located at both ends lower surface on the inside of outer storehouse upper open end and is circumferentially opened up along annular cover plate
There is annular second sealed groove；
Storehouse in one, shape is a tube body, vertical to place, and port is inserted in by the outer storehouse lower open end sliding on the inside of outer storehouse thereon
And there are gaps between upper port and outer storehouse upper open end, form an accommodating cavity, interior storehouse lower port is located at outside outer storehouse lower open end
Side, there are gaps between interior storehouse side wall and outer storehouse side wall；
One bottom cover, is covered on the interior storehouse lower port, and bottom cover upper surface is circumferentially convexly equipped with and first sealed groove along bottom cover
Matched first seal convexity；
One annular bottom plate, is set in the accommodating cavity, is removably covered on the interior storehouse upper port and in both ends and outer storehouse
There are gap between wall, which is circumferentially convexly equipped with one along annular bottom plate and is matched with second sealed groove
The second seal convexity, annular bottom plate lower surface both ends circumferentially offer at least one ring along annular bottom plate close to the position of inner ring
Shape third sealed groove；
One inner cover, is removably covered on the annular bottom plate lower surface, and upper surface is circumferentially convexly equipped with and described along inner cover
The matched third seal convexity of three sealed grooves, upper surface middle part are provided with a seal groove, and a sealing strip is embedded at the sealing
Slot forms sealing；
At least one the first sealing strips, cross sectional shape is "convex" shaped, is embedded at respectively in first sealed groove, forms the
Sealed connection between one sealed groove and the first seal convexity；
One second sealing strip, cross sectional shape are "convex" shaped, are embedded in second sealed groove, and the second sealed groove is formed
With the sealed connection between the second seal convexity；
At least a third sealing strip, cross sectional shape are "convex" shaped, are embedded in the third sealed groove, and third sealing is formed
Sealed connection between groove and third seal convexity.
2. plant fiber processing steam explosion device according to claim 1, which is characterized in that outside the outer storehouse upper open end
Wall is circumferential outside outer storehouse to be convexly equipped with the upper interconnecting piece of an annular, and interconnecting piece both ends offer connecting hole on one respectively in annular, corresponding
The ground annular cover plate both ends open up upper connection through-hole corresponding with the upper connecting hole respectively, and two fixing pieces are inserted in company
Hole, upper connecting hole are connected, being detachably connected between annular cover plate and outer storehouse is formed.
3. plant fiber processing steam explosion device according to claim 1, which is characterized in that the interior storehouse upper port inner wall
It is convexly equipped with an annular protrusion in the horizontal direction, it is blind which vertically offers an installation respectively
Hole, accordingly, the annular bottom plate both ends open up respectively is inserted in peace with the matched mounting hole of the installing blind, fixed link
Hole and installing blind are filled, being detachably connected between annular bottom plate and interior storehouse is formed.
4. plant fiber processing steam explosion device according to claim 1 or 3, which is characterized in that the sides Nei Cang side
Wall be provided with one for lead to steam and discharge can open-type door, the air admission hole is opened in outer storehouse side wall corresponding with this
On.
5. plant fiber processing steam explosion device according to claim 1, which is characterized in that first sealed groove
Quantity is 2, and along the lower interconnecting piece spaced radial arrangement of the annular, accordingly, the first seal convexity quantity is 2, the
One sealing strip quantity is 2.
6. plant fiber processing steam explosion device according to claim 1, which is characterized in that the third sealed groove
Quantity is 2, is arranged along annular bottom plate spaced radial, and accordingly, the third seal convexity quantity is 2, third sealing strip
Quantity is 2.
7. plant fiber processing steam explosion device according to claim 1, which is characterized in that interconnecting piece one under the outer storehouse
End vertically offers a pilot hole, accordingly, offers correspondingly to be oriented to the pilot hole on the bottom cover and lead to
Hole, a guide post are inserted in guide through hole and pilot hole, form the guiding that internal storehouse is slided along outer storehouse.
8. plant fiber processing steam explosion device according to claim 1, which is characterized in that the inner cover lower surface is equipped with
One arc convex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820337119.1U CN207987609U (en) | 2018-03-12 | 2018-03-12 | A kind of plant fiber processing steam explosion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820337119.1U CN207987609U (en) | 2018-03-12 | 2018-03-12 | A kind of plant fiber processing steam explosion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207987609U true CN207987609U (en) | 2018-10-19 |
Family
ID=63827825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820337119.1U Withdrawn - After Issue CN207987609U (en) | 2018-03-12 | 2018-03-12 | A kind of plant fiber processing steam explosion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207987609U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108411671A (en) * | 2018-03-12 | 2018-08-17 | 北京新锐得环保科技有限公司 | A kind of plant fiber processing steam explosion device |
-
2018
- 2018-03-12 CN CN201820337119.1U patent/CN207987609U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108411671A (en) * | 2018-03-12 | 2018-08-17 | 北京新锐得环保科技有限公司 | A kind of plant fiber processing steam explosion device |
| CN108411671B (en) * | 2018-03-12 | 2024-03-08 | 北京新锐得环保科技有限公司 | Steam explosion device for plant fiber treatment |
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Granted publication date: 20181019 Effective date of abandoning: 20240308 |
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Granted publication date: 20181019 Effective date of abandoning: 20240308 |