CN114032110A - Pyrolysis material discharging device and discharging system of pyrolysis furnace - Google Patents
Pyrolysis material discharging device and discharging system of pyrolysis furnace Download PDFInfo
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- CN114032110A CN114032110A CN202111247107.2A CN202111247107A CN114032110A CN 114032110 A CN114032110 A CN 114032110A CN 202111247107 A CN202111247107 A CN 202111247107A CN 114032110 A CN114032110 A CN 114032110A
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- pyrolysis
- screw conveyor
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B33/00—Discharging devices; Coke guides
- C10B33/02—Extracting coke with built-in devices, e.g. gears, screws
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B39/00—Cooling or quenching coke
- C10B39/12—Cooling or quenching coke combined with conveying means
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- Engineering & Computer Science (AREA)
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- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Screw Conveyors (AREA)
- Furnace Charging Or Discharging (AREA)
Abstract
The invention relates to a pyrolysis furnace pyrolysis material discharging device and a discharging system, which comprise a first screw conveyor arranged horizontally, wherein a material conveying mechanism of the first screw conveyor comprises a first material conveying part and a second material conveying part, the rotating directions of screw blades of the first material conveying part and the second material conveying part are opposite, a discharging pipe of the first screw conveyor corresponds to the junction position of the first material conveying part and the second material conveying part and is connected with a sealing box, the sealing box is connected with a shell of the second screw conveyor, the second screw conveyor is obliquely arranged relative to a horizontal plane, the height of a discharging end is greater than that of a feeding end, and a conveying mechanism of the second screw conveyor extends into the sealing box.
Description
Technical Field
The invention relates to the technical field of drying pyrolysis equipment, in particular to a pyrolysis material discharging device and a discharging system of a pyrolysis furnace.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The drying and pyrolysis of organic wastes is the field of organic energy regeneration, and is used for heating and cracking organic solid wastes such as domestic garbage, sludge, oil sludge, biomass (straws), coal chemical industry, petrochemical industry, general industry and the like to obtain required substances such as combustible gas, tar, carbon and the like. In recent years, a resource and ecological harmony new idea and a new way for harmless, resource and comprehensive utilization of organic wastes are processed, so that the organic wastes can be cleaned and recycled, and the environmental protection benefit and the economic benefit are good.
All present pyrolysis processes will treat that the material of pyrolysis carries out high temperature pyrolysis in putting into the pyrolysis oven, and the hot stove ware of discharge mechanism discharge is passed through to the material after the pyrolysis, and the inventor discovers that conventional discharge machine is when using, and the pyrolysis oven can produce the malleation tempering phenomenon, and the high temperature pyrolysis gas of scurrying out through the discharge machine probably arouses peripheral conflagration, consequently, there is the potential safety hazard in conventional discharge machine, can't satisfy actual demand.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a pyrolysis material discharging device of a pyrolysis furnace, which can ensure sealing and prevent high-temperature pyrolysis gas from escaping out of the discharging device while realizing continuous and stable conveying of pyrolysis materials.
In order to achieve the purpose, the invention adopts the following technical scheme:
the embodiment of the invention provides a pyrolysis furnace pyrolysis material discharging device which comprises a first spiral conveyor arranged horizontally, wherein a material conveying mechanism of the first spiral conveyor comprises a first material conveying part and a second material conveying part, the rotating directions of spiral blades of the first material conveying part and the second material conveying part are opposite, a discharging pipe of the first spiral conveyor corresponds to the junction position of the first material conveying part and the second material conveying part and is connected with a sealing box, the sealing box is connected with a shell of the second spiral conveyor, the second spiral conveyor is obliquely arranged relative to the horizontal plane, the height of a discharging end is greater than that of a feeding end, and a conveying mechanism of the second spiral conveyor extends into the sealing box.
Optionally, a cooling bin is sleeved on the periphery of the outer shell of the first screw conveyor, the cooling bin is provided with a cooling water inlet pipe and a cooling water outlet pipe, and a baffle plate is arranged in the cooling bin.
Optionally, the shell of the first screw conveyer is further connected with an explosion-proof opening, the explosion-proof opening is communicated with the inner space of the first screw conveyer, and an explosion-proof door is installed at the explosion-proof opening.
Optionally, the housing of the first screw conveyor is further provided with a shielding gas inlet pipe, and the shielding gas inlet pipe is communicated with the inner space of the housing of the first screw conveyor.
Optionally, the first screw conveyor is a shaft screw conveyor, and the second screw conveyor is a shaft or shaftless screw conveyor.
Optionally, the main shaft of the first screw conveyor includes a first shaft section, and a second shaft section and a third shaft section that are respectively disposed at two ends of the first shaft section, the first shaft section is a hollow shaft, and the second shaft section and the third shaft section are solid shafts.
Optionally, the second screw conveyor extends from the feeding end to the discharging end, and the pitch of the screw blade of the conveying mechanism is gradually increased.
Optionally, the second screw conveyor axis is angled at 30 ° to 60 ° to the horizontal.
Optionally, the seal box bottom is provided with cleans the pipe, clean pipe and seal box inner space intercommunication.
In a second aspect, an embodiment of the present invention provides a pyrolysis material discharging system for a pyrolysis furnace, including the pyrolysis material discharging device of the first aspect, a feeding pipe of the first screw conveyor is connected to a discharging port of a discharging end cover shell of the pyrolysis furnace, and a discharging pipe of the second screw conveyor is connected to a storage bin.
The beneficial effects of the invention are as follows:
1. the discharging device is provided with the sealing box, the shell of the second spiral conveyor is connected with the sealing box and is obliquely arranged relative to the horizontal plane, and the height of the feeding end is smaller than that of the discharging end, so that when pyrolysis materials are filled in the sealing box and then enter the second spiral conveyor to be stacked, the inner cross section of the whole second spiral conveyor can be filled, the whole conveying channel is dynamically sealed, high-temperature pyrolysis gas generated by positive pressure of the pyrolysis furnace cannot flow out, and surrounding fire hazards are avoided.
2. According to the discharging device, the discharging pipe of the first spiral conveyor corresponds to the junction position of the first material conveying part and the second material conveying part and is connected with the sealing box, the spiral blades of the first material conveying part and the second material conveying part are opposite in rotating direction, the pyrolysis material can be extruded, and the pyrolysis material can be conveniently lifted to the set stacking height on the second spiral conveyor.
3. According to the discharging device, the cooling bin is arranged on the periphery of the first spiral conveyor, so that pyrolysis materials can be cooled, subsequent treatment is facilitated, and meanwhile, the baffle plate is arranged in the cooling bin, so that the dead zone of cooling water can be reduced, turbulence is increased, and the heat exchange effect is improved.
4. According to the discharging device, the first shaft section of the main shaft of the first spiral conveyor is a hollow shaft, and the second shaft section and the third shaft section are solid shafts, so that the strength and the rigidity of the main shaft are ensured on the premise of reducing the weight of the main shaft.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic view of the overall structure of embodiment 2 of the present invention;
FIG. 2 is a front sectional view showing the whole structure of embodiment 2 of the present invention;
FIG. 3 is a side sectional view of the whole structure of embodiment 2 of the present invention;
the device comprises a pyrolysis furnace, a first spiral conveyor, a second spiral conveyor, a sealing box, a first spiral conveyor, a second spiral conveyor, a storage bin and a second spiral conveyor, wherein 1, a discharge end cover of the pyrolysis furnace 2, the first spiral conveyor, the sealing box and the second spiral conveyor are arranged in the storage bin;
1-1, end cover fixing frames; 1-2, a support structure; 1-3, a carbon coke powder discharging pipe; 1-4, a pyrolysis gas outlet pipe; 1-5, a temperature detection port; 1-6, a shell of a discharging end cover of the pyrolysis furnace; 1-7, circulating ball outlet pipe; 1-8, a heat-insulating layer; 1-9, sealing ring;
2-1, a first shell, 2-2, a first variable-frequency explosion-proof motor, 2-3, a coupler, 2-4, a cooling bin, 2-5, a cooling water inlet pipe, 2-6, a cooling water outlet pipe, 2-7, a baffle plate, 2-8, an explosion-proof pipe, 2-9, a first protective gas pipe, 2-10, a support frame, 2-11 and a main shaft;
3-1 parts of a sealing box shell, 3-2 parts of a cleaning pipe, 3-3 parts of a sealing ring, 3-4 parts of sealing powder, 3-5 parts of a sealing ring;
4-1, a second shell, 4-2, a second variable-frequency explosion-proof motor, 4-3, a coupler, 4-4, a connecting shaft, 4-5 and a sealing ring;
5-1, a bin shell, 5-2, a first interface, 5-3, a second interface, 5-4, a third interface, 5-5 and a second protective gas pipe.
Detailed Description
Example 1
The embodiment provides a pyrolysis material discharging device of a pyrolysis furnace, as shown in fig. 1-3, comprising a first screw conveyor 2, a sealing box 3 and a second screw conveyor 4 which are connected in sequence.
The first spiral conveyor 2 is a shaft-mounted spiral conveyor and comprises a first shell 2-1, the first shell is supported by a plurality of support frames 2-10, one end of the first shell 2-1 can be connected with a pyrolysis furnace discharge end cover shell of a pyrolysis furnace, a driving element is fixed at the other end of the first shell 2-1, in order to meet the requirements of a working environment, the driving element is a first variable-frequency explosion-proof motor 2-2, an output shaft of the first variable-frequency explosion-proof motor 2-2 is connected with a first material conveying mechanism through a coupler 2-3, the first material conveying mechanism comprises a main shaft and a spiral blade fixed on the peripheral surface of the main shaft, an output shaft of the first variable-frequency explosion-proof motor 2-2 is connected with one end of the main shaft 2-11 through the coupler 2-3, and the other end of the main shaft 2-11 can extend into the pyrolysis furnace discharge end cover shell, and is supported by the support structure 1-2. The main shaft 2-11 is provided with helical blades, and the part of the main shaft 2-11 extending into the shell of the discharging end cover of the pyrolysis furnace can send pyrolytic high-temperature carbon powder generated by the pyrolysis furnace into the first screw conveyor 2 through the helical blades for further conveying.
Further, in order to reduce the weight of the main shafts 2 to 11 and ensure that the main shafts 2 to 11 have sufficient strength and rigidity, the main shafts 2 to 11 are divided into three shaft sections, namely a first shaft section, a second shaft section and a third shaft section, wherein the second shaft section and the third shaft section are arranged at two ends of the first shaft section, the first shaft section adopts a hollow shaft, and the second shaft section and the third shaft section adopt solid shafts.
In this embodiment, according to the rotation direction of the helical blade, the first material conveying mechanism is divided into a first material conveying portion and a second material conveying portion, the rotation directions of the helical blade on the first material conveying portion and the second material conveying portion are opposite, and the discharging pipe of the first screw conveyor is aligned with the boundary position of the first material conveying portion and the second material conveying portion.
The helical blade is welded and fixed on the first main shaft, the pitch of the helical blade is 150mm-250mm, and the helical blade can be set by a person skilled in the art according to actual needs.
The discharging pipe of the first screw conveyor 2 is connected with the top end of the seal box 3, and the inner space of the discharging pipe is communicated with the inner space of the seal box 3. The first screw conveyor 2 can feed the high temperature carbon powder into the seal box 3.
The periphery of a first shell 2-1 of the first spiral conveyor is provided with a cooling bin 2-4, and the cooling bin 2-4 is fixedly connected with the first shell 2-1.
And one end of the cooling bin is provided with a cooling water inlet pipe 2-5, the other end of the cooling bin is provided with a cooling water outlet pipe 2-6, the cooling water inlet pipe 2-5 is arranged close to the discharge end of the first screw conveyor 1, and the cooling water inlet pipe 2-5 and the cooling water outlet pipe 2-6 are communicated with the inner space of the cooling bin.
The cooling device is characterized in that a plurality of baffle plates 2-7 are arranged in the cooling bin 2-4, the baffle plates 2-7 are fixedly welded with the inner bin wall of the cooling bin 2-4 and the outer side surface of the first shell 2-1, the baffle plates 2-7 are arranged along the axial direction of the first screw conveyor 1, the baffle plates 2-7 are semicircular ring plates, adjacent baffle plates 2-7 are arranged on two sides of the first shell 2-1 along the horizontal direction, and through arrangement of the baffle plates 2-7, dead zones of cooling water can be reduced, turbulence is increased, and the heat exchange effect is improved.
The first shell 2-1 is connected with the explosion-proof pipe 2-8, the explosion-proof pipe 2-8 is communicated with the inner space of the first shell, and the explosion-proof door is arranged at the explosion-proof pipe 2-8, so that the discharging and conveying of the first spiral conveyor are ensured within a set pressure range.
The first shell 2-1 is also connected with a first protective gas pipe 2-9, the first protective gas pipe 2-9 is communicated with the inner space of the first shell 2-1, and protective gas can be introduced into the inner space of the first shell 2-1 through the protective gas pipe, preferably, the protective gas is nitrogen. Through setting up first protective gas pipe 2-9, can let in nitrogen gas earlier before overhauing, safety when having guaranteed to overhaul.
The sealing box 3 comprises a sealing box shell 3-1, the top of the sealing box shell 3-1 is connected with a discharging pipe of the first spiral conveyor through a flange structure, a sealing ring 3-3 is arranged between the sealing box shell 3-1 and a flange plate of the discharging pipe of the first spiral conveyor, a cleaning pipe 3-2 is arranged at the bottom end of the sealing box shell 3-1, and the cleaning pipe is used as a passage for cleaning powder during maintenance.
The shell wall on one side of the sealing box shell 3-1 is fixedly connected with one end of a second shell 4-1 of a second spiral conveyor 4, the inner space of the second shell 4-1 is communicated with the inner space of the sealing box shell 3-1, the second spiral conveyor 4 is obliquely arranged relative to the horizontal plane, the height of the feeding end is smaller than that of the discharging end, the included angle theta between the second spiral conveyor 4 and the horizontal plane is 30-60 degrees, the included angle is determined according to the repose angle of pyrolytic carbon powder, and the included angle is larger than the repose angle.
One end of the second shell 4-1 is connected with a connecting pipe integrally connected with the sealing box shell 3-1 through a flange, the other end of the second shell is provided with a driving element, a sealing ring 3-5 is arranged between the connecting pipe and a flange plate of the second shell 4-1, the driving element adopts a second variable frequency explosion-proof motor 4-2, and an output shaft of the second variable frequency explosion-proof motor 4-2 is connected with a material conveying mechanism of a second spiral conveyor through a coupler 4-3.
In this embodiment, the second screw conveyor 4 is a shaftless screw conveyor.
The material conveying mechanism of the second spiral conveyor comprises a connecting shaft 4-4, preferably, the connecting shaft 4-4 is a solid shaft, the connecting shaft 4-4 is connected with an output shaft of the second variable-frequency explosion-proof motor 4-2 through a coupler 4-3, the connecting shaft is provided with a set length, spiral blades are welded and fixed on the connecting shaft, and only part of the spiral blades are welded on the connecting shaft to form the shaftless spiral conveyor.
The distance t between the outer side surface of the spiral blade and the inner side surface of the second shell 4-1 is 20mm-60mm, and the distance t is determined according to the density of the pyrolytic carbon powder and the structure of the second spiral conveyor 4.
Along the direction from the feeding end to the discharging end of the second screw conveyor 4, the screw pitch of the screw blade is gradually increased, and the maximum screw pitch of the discharging end is 1.1-1.3 times, preferably 1.2 times, of the minimum screw pitch of the feeding end.
Example 2:
this embodiment provides a pyrolysis material discharging system of a pyrolysis furnace, as shown in fig. 1-3, including the pyrolysis material discharging device of the pyrolysis furnace described in embodiment 1.
The discharging end cover of the pyrolysis furnace comprises an end cover fixing frame 1-1, the end cover fixing frame 1-1 is fixedly welded with one end of an end cover support 1-10, the other end of the end cover support 1-10 is fixed with a discharging end cover shell 1-6 of the pyrolysis furnace, the discharging end cover shell 1-6 of the pyrolysis furnace is fixed on the end cover fixing frame 1-1, a first shell 2-1 of a first spiral conveyor 2 extends into the discharging end cover shell 1-6 of the pyrolysis furnace, a feeding pipe of the first spiral conveyor is communicated with a carbon coke powder discharging pipe 1-3 of the discharging end cover shell 1-6 of the pyrolysis furnace, the end part of a main shaft of the first spiral conveyor is supported by a supporting structure 1-2 fixed on the discharging end cover shell 1-6 of the pyrolysis furnace, and the supporting structure 1-2 can be a main shaft supporting structure of the existing spiral conveyor, the high-temperature carbon powder conveying device comprises a high-temperature wear-resistant sleeve, a fixed shaft sleeve and a heat-insulating structure, so that stable and continuous operation of a main shaft at a high-temperature end is guaranteed, and high-temperature carbon powder conveying is realized.
The top of the shell body 1-6 of the discharging end cover of the pyrolysis furnace is further provided with a pyrolysis gas outlet pipe 1-4 and a temperature detection port 1-5, a temperature detection element is installed in the temperature detection port and is used for measuring the temperature of the discharging port of the pyrolysis furnace, so that the pyrolysis reaction of organic waste can be controlled better, the shell body 1-6 of the discharging end cover of the pyrolysis furnace is further connected with a circulating ball outlet pipe 1-7, and a heat preservation layer 1-8 is arranged inside the shell body 1-6 of the discharging end cover of the pyrolysis furnace.
In the embodiment, the first shell 2-1 is fixedly connected with a shell 1-6 of a discharge end cover of the pyrolysis furnace through a flange structure, and a sealing ring 1-9 is arranged between flange plates.
The discharging pipe of the second spiral conveyor 4 is connected with the bin 5, pyrolytic carbon powder can be conveyed into the bin, the bin comprises a bin shell 5-1, the discharging pipe of the bin shell 5-1 is connected with the discharging pipe of the second spiral conveyor 4 through a flange structure, a sealing ring 4-5 is arranged between flange plates, a second protective gas pipe 5-5 is arranged at the top of the bin shell 5-1 and used for introducing protective gas firstly when a system is overhauled, nitrogen is preferably introduced firstly, and safety when the system is overhauled is guaranteed.
The bottom of the bin shell 5-1 is provided with a three-way pipe, a first connector 5-2 of the three-way pipe is communicated with the inner space of the bin shell 5-1, a second connector 5-3 is connected with a nitrogen source or a low-temperature smoke gas source through a pipeline, and a third connector 5-4 is used for discharging carbon powder.
The working method of the embodiment comprises the following steps:
the first screw conveyer 2 works for a period of time in advance, so that pyrolytic carbon powder is stacked in the second screw conveyer 4 for a set height to form sealing powder 3-4 to play a sealing role, and at the moment, the first screw conveyer 2 and the second screw conveyer 4 work simultaneously to convey pyrolytic carbon powder generated by a pyrolysis furnace into a storage bin.
Through the pyrolytic carbon powder piled up in advance, the sealing effect can be effectively played, and the high-temperature pyrolysis gas is prevented from escaping from the discharging device. Simultaneously can carry out continuous stable transport to high temperature powdered carbon through first screw conveyer 2 and second screw conveyer 4, effectively promote the sealed security of organic waste dry pyrolysis product high temperature powdered carbon ejection of compact.
In another embodiment, the pyrolytic carbon powder is added into the sealed box 3 in advance until the pyrolytic carbon powder is stacked in the second screw conveyor 4 to a certain height, and then the first screw conveyor 2 and the second screw conveyor 4 are simultaneously started to feed the pyrolytic carbon powder into the bin 5.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. The utility model provides a pyrolysis furnace pyrolysis material discharging device, a serial communication port, first screw conveyer including the level setting, first screw conveyer's defeated material mechanism includes the defeated material portion of first defeated material portion and second, the helical blade of the defeated material portion of first defeated material portion and second revolves to opposite, first screw conveyer's discharging pipe corresponds and is connected with the seal box with the juncture position of the defeated material portion of first defeated material portion and second, the seal box is connected with second screw conveyer's casing, second screw conveyer sets up for the horizontal plane slope, and the discharge end height is greater than the feed end height, second screw conveyer's conveying mechanism stretches into in the seal box.
2. The pyrolysis material discharging device of the pyrolysis furnace as claimed in claim 1, wherein the outer shell of the first screw conveyor is sleeved with a cooling bin, the cooling bin is provided with a cooling water inlet pipe and a cooling water outlet pipe, and a baffle plate is arranged in the cooling bin.
3. The pyrolysis material discharging device of the pyrolysis furnace according to claim 1, wherein the shell of the first screw conveyer is further connected with an explosion-proof opening, the explosion-proof opening is communicated with the inner space of the first screw conveyer, and an explosion-proof door is arranged at the explosion-proof opening.
4. The pyrolysis material discharging device of the pyrolysis furnace according to claim 1, wherein the casing of the first screw conveyor is further provided with a shielding gas inlet pipe, and the shielding gas inlet pipe is communicated with the inner space of the casing of the first screw conveyor.
5. The pyrolysis material discharging device of claim 1, wherein the first screw conveyor is a shaft screw conveyor, and the second screw conveyor is a shaft screw conveyor or a shaftless screw conveyor.
6. The pyrolysis material discharging device of the pyrolysis furnace according to claim 5, wherein the main shaft of the first screw conveyer comprises a first shaft section and a second shaft section and a third shaft section which are respectively arranged at two ends of the first shaft section, the first shaft section is a hollow shaft, and the second shaft section and the third shaft section are solid shafts.
7. The pyrolysis material discharging device of claim 1, wherein the pitch of the screw blade of the conveying mechanism is gradually increased from the feeding end to the discharging end of the second screw conveyor.
8. The pyrolysis material discharging device of claim 1, wherein the axis of the second screw conveyor is at an angle of 30 ° to 60 ° with respect to the horizontal plane.
9. The pyrolysis material discharging device of the pyrolysis furnace according to claim 1, wherein a cleaning pipe is arranged at the bottom of the sealing box, and the cleaning pipe is communicated with the inner space of the sealing box.
10. A pyrolysis furnace pyrolysis material discharging system, which is characterized by comprising the pyrolysis furnace pyrolysis material discharging device as claimed in any one of claims 1 to 9, wherein the feeding pipe of the first screw conveyer is connected with the discharging port of the pyrolysis furnace discharging end cover shell, and the discharging pipe of the second screw conveyer is connected with the storage bin.
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| CN202111247107.2A CN114032110B (en) | 2021-10-26 | 2021-10-26 | Pyrolysis material discharging device and discharging system of pyrolysis furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024079390A1 (en) * | 2022-10-14 | 2024-04-18 | Upm-Kymmene Corporation | A conveyor for pretreated biomass |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106318432A (en) * | 2016-08-31 | 2017-01-11 | 张新华 | Solid material recovery system for thermal cracking of waste tires |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106318432A (en) * | 2016-08-31 | 2017-01-11 | 张新华 | Solid material recovery system for thermal cracking of waste tires |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024079390A1 (en) * | 2022-10-14 | 2024-04-18 | Upm-Kymmene Corporation | A conveyor for pretreated biomass |
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