CN117258676A - An integrated biomass pulping machine integrating a series of pulping processes - Google Patents
An integrated biomass pulping machine integrating a series of pulping processes Download PDFInfo
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- CN117258676A CN117258676A CN202311448000.3A CN202311448000A CN117258676A CN 117258676 A CN117258676 A CN 117258676A CN 202311448000 A CN202311448000 A CN 202311448000A CN 117258676 A CN117258676 A CN 117258676A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/75—Discharge mechanisms
- B01F35/754—Discharge mechanisms characterised by the means for discharging the components from the mixer
- B01F35/7547—Discharge mechanisms characterised by the means for discharging the components from the mixer using valves, gates, orifices or openings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/50—Mixing liquids with solids
- B01F23/53—Mixing liquids with solids using driven stirrers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/50—Mixing liquids with solids
- B01F23/58—Mixing liquids with solids characterised by the nature of the liquid
- B01F23/581—Mixing liquids with solids, slurries or sludge, for obtaining a diluted slurry
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/80—After-treatment of the mixture
- B01F23/808—Filtering the mixture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
- B01F35/71805—Feed mechanisms characterised by the means for feeding the components to the mixer using valves, gates, orifices or openings
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Paper (AREA)
Abstract
本专利申请提供了一种集成系列制浆工艺的一体生物质制浆机，主体为水平回转运行的圆筒卧式封闭仓，本封闭仓的两端向中心收拢，一端收拢为进料接口、另一端收拢为出料接口，所述的进料接口处组装有旋阀；所述的旋阀由密封转动配合的阀体和阀芯构成，两者之中设有与封闭仓相通的浆料输送中央内腔；所述的阀芯，其阀壁内设有引出口与所述封闭仓内沿仓内壁设置的输料管相通的潜通道，潜通道的阀体内端与阀体内壁上的的第一环槽对应相通；所述的封闭仓，其仓内壁上固定附着有从进料仓口旋向出料仓口的螺旋带。本制浆机可完成洗料、生物酶反应、熟化、蒸煮、漂白、筛选等制浆工艺，具有药液耗量少、低耗能的技术优点。
This patent application provides an integrated biomass pulping machine that integrates a series of pulping processes. The main body is a cylindrical horizontal closed bin that rotates horizontally. The two ends of this closed bin are gathered toward the center, and one end is folded into a feed interface. The other end is gathered into a discharge interface, and a rotary valve is assembled at the feed interface; the rotary valve is composed of a valve body and a valve core that are sealed and rotated, and there is a slurry in the two that communicates with the closed bin. The central inner cavity of the conveyor is transported; the valve core has a submersible passage with an outlet in the valve wall that communicates with the feeding pipe provided along the inner wall of the closed compartment; the inner end of the submersible passage is connected to the inner end of the valve core. The first annular grooves of the closed bins are correspondingly connected; the inner wall of the closed bin is fixedly attached with a spiral belt that rotates from the entrance of the feed bin to the mouth of the discharge bin. This pulping machine can complete pulping processes such as washing, biological enzyme reaction, aging, cooking, bleaching, and screening. It has the technical advantages of low chemical liquid consumption and low energy consumption.
Description
Technical Field
The patent application relates to the technical field of pulping of biomass fiber pulp, in particular to an integrated pulping device for integrally completing a series of procedures.
Background
The pulping process of biomass fiber raw materials sequentially comprises a material preparation process, material washing, cooking, bleaching, screening and the like, the cooking step is completed by equipment such as a rotary spherical digester, a spiral continuous digester or a vertical digester, the bleaching step is generally completed by a pulping bleaching machine, and each pulping process needs corresponding equipment to form a pulping production line, so that the production of pulp finished products is realized. Therefore, the single functions of the working procedures and equipment lead to the complicated and miscellaneous components of the pulping production line, long process flow, high energy consumption, large labor consumption, high labor intensity, time and labor consumption for working, and the technical problems of poor production conditions, low pulping efficiency, difficult quality assurance of pulp products and low production economic benefit are caused.
For this reason, technical developers develop and innovate in many aspects, propose to integrate the stewing and bleaching into pulping all-in-one machine equipment, as a kind of "high-concentration stewing and bleaching pulping all-in-one machine" disclosed in patent document CN102212978A, its main body is a horizontal rotatable long cylindrical closed tank, the middle part of the tank stretches into the feed pipe, and then three-way branch is fed into the feed pipe from the tank, there are liquid discharge ports and filter plates covering the liquid discharge ports on opposite sides of the feed; the multi-way rotary valve is arranged at one end of the tank and is a heat source, a cold source, a liquid medicine or steam delivery control valve, wherein the liquid medicine or steam delivery is directly communicated with a liquid medicine pipeline penetrating through the center line of the tank, the liquid medicine pipeline is supported by a radial supporting rod in the tank, a stirring vertical plate facing the center is arranged on the wall of the tank, and the presoaking, the stewing or the bleaching can be carried out on materials in the tank in a time-sharing manner.
The existing horizontal pulping integrated machine has more use problems in actual operation: the multi-path rotary valve is assembled to occupy one port of the tank body, so that a heat source, a cold source, liquid medicine and the like can be conveniently conveyed to the tank, a feed inlet is formed in the middle of the wall of the tank body, slurry is mainly accumulated in the middle of the tank body, uniform distribution is difficult to form in the whole tank body, uniformity of material dipping, stewing or bleaching storage is influenced, the technical problems of slurry generation, semi-raw semi-cooked slurry and semi-black semi-white slurry are easy to occur, and a stirring sheet close to two sides is difficult to exert the effect of forcibly mixing the materials; the liquid medicine pipeline penetrates through the center line of the tank body, and although the connecting structure with the multi-path rotary valve is simplified, the arrangement structure and the supporting member of the liquid medicine pipeline are continuously impacted by materials in operation, so that the mixing of the materials in the tank with the liquid medicine, steam and the like can be influenced, the frame structure in the tank causes high failure rate, and the stability and the reliability of the operation of the device are influenced.
Disclosure of Invention
The invention aims to solve the technical problems of poor equipment stability and reliability and poor quality of the manufactured pulp caused by the technical defects of the existing integrated pulping machine, and provides an integrated biomass pulping machine integrating series pulping processes.
The integrated biomass pulping machine technical scheme of integrated serial pulping technology that this patent application provided, its main technical content is: an integrated biomass pulping machine integrating a series of pulping processes is characterized in that a main body is a cylindrical horizontal closed bin which horizontally rotates and runs, two ends of the closed bin are folded towards the center, one end of the closed bin is folded to form a feeding interface, the other end of the closed bin is folded to form a discharging interface, a liquid discharging interface is arranged in the middle of the closed bin, and a sieve plate for covering the liquid discharging interface is arranged in the bin;
a rotary valve is assembled at the feeding interface;
the rotary valve comprises a valve body and a valve core which are in sealing and rotating fit, wherein the valve body and the valve core are provided with a slurry conveying central inner cavity communicated with a feed port of the closed bin, the valve body is provided with an outer end port communicated with an outer feed pipeline, and the valve core is provided with an outer end port communicated with the feed port of the closed bin;
the valve core is internally provided with a submerged channel, an outlet of the submerged channel is communicated with a conveying pipe port arranged along the inner wall of the closed bin, the inner end of a valve body of the submerged channel is correspondingly communicated with a first annular groove on the inner wall of the valve body, and a first external connecting pipe connector with the inner end communicated with the first annular groove is arranged on the valve body;
the inner wall of the closed bin is fixedly attached with a spiral belt which rotates from the feeding bin opening to the discharging bin opening, and the belt opening extends into the bin.
According to one preferred option of the whole technical scheme, the inner wall of the closed bin is fixedly attached with two or more spiral belts which are screwed from the feeding bin opening to the discharging bin opening at equal intervals.
In one preferable option of the above overall technical solution, the openings of the spiral belt are saw-tooth.
One preferable option of the whole technical scheme is that the bin body close to the discharge bin port is a spiral belt with a non-sawtooth belt port from the discharge port.
One preferable option of the whole technical scheme is that the closed bin is provided with an interlayer;
the valve core is characterized in that a first submerged channel and a second submerged channel which are axially parallel are further arranged in the valve wall of the valve core, the first submerged channel and the second submerged channel are respectively used as a heat source conveying channel and a heat source returning channel, one end of a closed bin of the valve core is respectively communicated with the interlayer pipeline, the outer end of the closed bin is respectively correspondingly communicated with a second annular groove and a third annular groove on the inner wall of the valve body, and the second annular groove and the third annular groove are respectively communicated with a heat source conveying pipe joint and a heat source returning pipe joint. The heat source can also be a cold source.
In one preferred option of the above overall technical scheme, the interlayer is provided with uniformly distributed reinforcing belts.
In one preferable option of the whole technical scheme, the sieve plate B covers the range of the included angle of the circle center of the lower semicircle of the inner wall of the bin, which is 30-60 degrees.
According to one preferred option of the whole technical scheme, more than two integrated biomass pulping machines of the integrated series pulping process are connected in series according to the inlet and outlet sequence, the discharge port of the front-stage pulping machine is connected with the material passing chute through a heat-resistant and pressure-resistant fixed rotary bearing, and then the discharge port of the front-stage pulping machine is connected with the outer feed pipeline of the rear-stage pulping machine in series.
Drawings
Fig. 1 is a general sectional view of the present patent application.
Fig. 2 is a left side view of fig. 2.
Fig. 3 is a sectional view of the E-E structure of fig. 1.
Fig. 4 is a sectional view of the structure of the faucet.
Fig. 5 is a sectional view of the structure of B-B of fig. 4.
Fig. 6 is a diagram of a plurality of series structures of the present patent application.
Fig. 7 is a sectional view of the fixed rotation bearing.
Detailed Description
The technical content of the integrated biomass pulping machine of the integrated series pulping process of the patent application will be described in detail below, and the application technical effects thereof will be described.
The integrated biomass pulping machine is an integrated device capable of carrying out pulping processes such as material washing, dipping, steaming, material washing, bleaching, material re-washing and the like in a time-sharing manner, the main body of the integrated biomass pulping machine is a cylindrical horizontal closed bin 1 which horizontally rotates and runs, the integrated biomass pulping machine is horizontally rotatably supported on two outer rolling bearings 150, limit rollers 151 are arranged on two sides of a bearing ring 50, and an external gear 40 on the closed bin 1 is driven by a reducing motor to run in a forward direction or a reverse direction alternately through a pinion, so that stable and reliable running is ensured. The two ends of the closed bin 1 are folded towards the center cone shape, one end is folded into a feeding interface 11, the other end is folded into a discharging interface 22, the middle part of the closed bin 1 is provided with a liquid discharging interface 80, a sieve plate B which covers the liquid discharging interface 80 is arranged in the bin, and the sieve plate B covers the circle center included angle range of 30-60 degrees of the lower semicircle of the inner wall of the bin.
In this embodiment, the inner wall of the closed bin 1 is fixedly attached with a spiral belt 13 which rotates from the feeding bin opening M to the discharging bin opening N, and the belt opening extends into the bin and is provided with a saw tooth shape; the height of the belt opening is 200-500mm; the helical belt 13 with a non-sawtooth belt mouth is arranged from the bin body close to the discharge bin mouth N to the discharge port 22.
In this embodiment, two or more spiral belts 13 are fixedly attached to the inner wall of the closed bin 1 at equal intervals, and the belt openings extend into the bin from the feeding bin opening M to the discharging bin opening N.
The closed bin 1 is fixedly attached with a conveying pipe 15 along the inner wall of the bin and penetrates through the bin body to the feeding interface 11, and the conveying pipe 15 is uniformly provided with small conveying holes.
The feeding interface 11 is provided with a rotary valve for controlling the transportation of heat source, steam, liquid medicine, cleaning water, oxygen and the like required by the closed bin 1. The valve comprises a valve body 121 and a valve core 122 which are in sealing and rotating fit, as shown in fig. 4 and 5, the valve body 121 is provided with an outer end port 124 which is communicated with an outer feed pipeline, and the valve core 122 is provided with an outer end port 128 which is communicated with the feed port 11 of the closed bin 1, wherein the two parts are provided with slurry conveying central inner cavities which are communicated with the feed port 11 of the closed bin 1.
The valve core 122 is provided with a submerged channel 125 in the valve wall, the outlet of the submerged channel 125 is correspondingly communicated with the port of the material conveying pipe 15 in the closed bin 1, one end of the valve body 121 of the submerged channel 125 is correspondingly communicated with the first annular groove 145 on the inner wall of the valve body 121, and the valve body 121 is provided with a first external connection pipe interface 27 which is communicated with the first annular groove 145 at the inner end and is used for controlling the conveying of various liquid medicines, oxygen, cleaning water and the like to the closed bin 1.
The closed bin 1 mainly used for curing and washing materials can be a single-wall bin.
The closed bin 1 is provided with an interlayer A. The interlayer A is used for introducing a heat source or a cold source, such as steam or heat conducting oil, and providing temperature process conditions required by dipping, stewing or bleaching, cooling and discharging and the like. The heat source described below also includes a cold source.
Reinforcing belts 10 are uniformly distributed in the interlayer A to improve the mechanical strength of the interlayer A.
The valve core 122 is also provided with a first submerged groove 123 and a second submerged groove 129 which are axially parallel in the valve wall, the first submerged groove 123 and the second submerged groove 129 are respectively used as a heat source conveying channel and a heat source returning channel between the valve body 121 and the closed cabin 1, one end of the closed cabin 1 is respectively communicated with the interlayer A through pipe joints 126 and 127 and intermediate connecting pipes 30 and 29, one end in the valve body 121 is respectively correspondingly communicated with a second annular groove 146 and a third annular groove 147 on the inner wall of the valve body, and the second annular groove 146 and the third annular groove 147 are respectively connected with a heat source external pipeline through a heat source conveying pipe joint 31 and a heat source returning pipe joint 18. Wherein, the heat source can also be a cold source.
The material after material preparation enters the closed bin 1 in operation through the rotary valve, the material is fully mixed and uniformly distributed in the closed bin 1 under the action of the spiral belt 13 and the sawtooth belt opening thereof, and simultaneously the material is torn and conveyed, the liquid medicine, oxygen, washing water and a heat source or a cold source enter the closed bin 1 through the control of the rotary valve and enter the closed bin 1 for full mixing or contact heat exchange with the material, the pulping processes such as material washing, biological enzyme reaction, curing, stewing, bleaching and screening are completed, the finished pulp is discharged under normal pressure, the interlayer can enable the temperature in the bin to quickly and accurately follow the process temperature control, the spiral belt 13 can well complete high-efficiency mixing with the liquid medicine even for semi-dry high-concentration pulp, and thus the physical index of the finished pulp is easy to achieve, and the technical advantages of low liquid medicine consumption and low energy consumption are achieved.
The integrated biomass pulping machines of more than 2 integrated series pulping processes are connected in series according to the inlet and outlet sequence, the discharge port of the front-stage pulping machine is connected with a material passing chute 26 through a heat-resistant pressure-resistant fixed rotation bearing 23, and the material passing chute is used for carrying out pulping production of semi-dry ultrahigh thick pulp in an outer feed pipeline of the rear-stage pulping machine connected in series.
As shown in fig. 7, the structure of an embodiment of the fixed rotation bearing 23 is composed of an inner tube 231 and an outer sleeve 232 which are in sealed rotation fit, the inner tube 231 is connected with the discharge port 22 of the front-stage pulping machine, and the outer sleeve 232 is fixedly connected with the material passing chute 26.
The serial number of sections can be set according to the variety of the slurry, the production process, the pulping standard and the production capacity, equipment such as pulping is additionally arranged after each section of discharging, the functional treatments such as pulping, defibrination, tearing and the like are implemented, and then the serial lower section pulping is conveyed. After biomass materials are sent into a first section of pulping machine, the biomass materials are torn, stirred and propelled by a spiral belt with a sawtooth belt opening in operation, meanwhile, biological enzyme compound medicaments are injected through a rotary valve for impregnation and biological enzyme reaction, and a heat source is sent into an interlayer, cellulase, hemicellulase and lignin enzyme compound enzymolysis reaction is carried out under the conditions of accurate control and proper water content, catalysis, mixed stirring and slurry softening are carried out, the biomass materials are then sent into a 2 nd section of pulping machine, the softening medicaments are injected through the 2 section of rotary valve, the interlayer provides a heat source, the continuous reaction is carried out under the action of tearing and stirring of the sawtooth spiral belt, the decomposition of cellulose, hemicellulose and lignin of straw is promoted, the discharge is carried out after the curing of the slurry is finished, the biomass materials are divided into two paths, one path is used for producing the unbleached pulp, pulping and pulping equipment is additionally arranged, and finally, the finished unbleached pulp is obtained; the other path is used for producing bleached pulp, the bleached pulp is sent into an extrusion-cracking impregnator by conveying equipment, bleaching auxiliary is injected while mechanical extrusion and tearing are carried out, the bleached pulp is then conveyed to the 3 rd section of pulp making machine, a heat source is introduced into an interlayer by a 3-section rotary valve, the pulp is ensured to be heated continuously, the ultra-high concentration pulp is promoted to be heated and impregnated and mixed uniformly under the actions of tearing and stirring of a sawtooth spiral belt, the uniformity, the thoroughness and the high efficiency of bleaching reaction are ensured, and the bleached end pulp is conveyed to a discharge end and discharged by the spiral belt.
Claims (8)
1. An integrated biomass pulping machine integrating a series of pulping processes is characterized in that a main body is a cylindrical horizontal closed bin (1) which horizontally rotates and runs, two ends of the closed bin (1) are folded towards the center, one end of the closed bin is folded to form a feeding interface (11), the other end of the closed bin is folded to form a discharging interface (22), a liquid discharging interface (80) is arranged in the middle of the closed bin (1), and a sieve plate (B) for covering the liquid discharging interface is arranged in the bin; it is characterized in that the method comprises the steps of,
a rotary valve is assembled at the feeding interface;
the rotary valve comprises a valve body (121) and a valve core (122) which are in sealing and rotating fit, wherein the valve body (121) and the valve core (122) are provided with a slurry conveying central inner cavity communicated with a closed bin feeding interface (11), the valve body (121) is provided with an outer end interface (124) communicated with an outer feeding pipeline, and the valve core (122) is provided with an outer end interface (128) communicated with the closed bin feeding interface (11);
the valve core (122) is internally provided with a submerged channel (125), an outlet of the submerged channel (125) is communicated with a port of a conveying pipe (15) arranged along the inner wall of the closed bin (1), the inner end of a valve body of the submerged channel (125) is correspondingly communicated with a first annular groove (145) on the inner wall of the valve body (121), and a first external connection pipe interface (27) with the inner end communicated with the first annular groove (145) is arranged on the valve body (121);
the inner wall of the closed bin (1) is fixedly attached with a spiral belt (13) which rotates from a feeding bin opening (M) to a discharging bin opening (N), and the belt opening extends into the bin.
2. The integrated biomass pulping machine of the integrated series pulping process according to claim 1, wherein the inner wall of the closed bin (1) is fixedly attached with two or more spiral belts (13) which rotate from the feeding bin opening to the discharging bin opening at equal intervals.
3. The integrated biomass pulping machine of the integrated series pulping process of claim 1 or 2, wherein the helical band (13) has a zigzag mouth.
4. The integrated series pulping process of claim 3 wherein the helical band is a non-toothed band from the bin proximate the discharge bin to the discharge bin.
5. The integrated biomass pulping machine of the integrated series pulping process according to claim 1, characterized in that said closed silo (1) has an interlayer (a);
the valve is characterized in that a valve core (122) is further internally provided with a first submerged channel (123) and a second submerged channel (129) which are axially parallel, the first submerged channel (123) and the second submerged channel (129) are respectively used as a heat source conveying channel and a heat source returning channel, one end of a closed bin of the valve core is respectively communicated with the interlayer pipeline, the outer end of the closed bin is respectively correspondingly communicated with a second annular groove (146) and a third annular groove (147) on the inner wall of the valve body, and the second annular groove (146) and the third annular groove (147) are respectively communicated with a heat source conveying pipe joint (31) and a heat source returning pipe joint (28).
6. The integrated biomass pulping machine of the integrated series pulping process according to claim 5, wherein the interlayer (a) is provided with uniformly distributed reinforcing belts (10).
7. The integrated biomass pulping machine of integrated series pulping process according to claim 1, wherein the screen plate (B) covers the center angle range of 30-60 ° of the lower semicircle of the inner wall of the bin.
8. The integrated biomass pulping process of any of claims 1-7, wherein more than two integrated biomass pulping processes of the integrated series are connected in series according to the order of entry and exit, and the discharge port of the front stage pulping machine is connected with the material passing chute (26) through a heat-resistant and pressure-resistant fixed rotary bearing (23) and then connected with the outer feed pipeline of the rear stage pulping machine in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311448000.3A CN117258676B (en) | 2023-11-02 | 2023-11-02 | Integrated biomass pulping machine integrating series pulping processes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311448000.3A CN117258676B (en) | 2023-11-02 | 2023-11-02 | Integrated biomass pulping machine integrating series pulping processes |
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| Publication Number | Publication Date |
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| CN117258676A true CN117258676A (en) | 2023-12-22 |
| CN117258676B CN117258676B (en) | 2025-12-19 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1087550A (en) * | 1964-01-03 | 1967-10-18 | Republic Of France | Improvements in or relating to nitro-cellulose production |
| CN102212978A (en) * | 2011-04-30 | 2011-10-12 | 李刚荣 | High-concentration digesting, bleaching and pulping integrated machine |
| CN202081340U (en) * | 2011-04-30 | 2011-12-21 | 李刚荣 | High yield environment-friendly papermaking pulping system |
| CN209619743U (en) * | 2019-02-19 | 2019-11-12 | 郓城海沁纤维有限公司 | A kind of pre- dipping machine of slurrying double helix |
| CN218637171U (en) * | 2022-09-30 | 2023-03-17 | 沁阳市中澳生物科技有限公司 | Novel cylinder pulping boiler |
| CN221753189U (en) * | 2023-11-02 | 2024-09-24 | 丹东东方轻工机械有限公司 | Integrated biomass pulping machine with a series of pulping processes |
-
2023
- 2023-11-02 CN CN202311448000.3A patent/CN117258676B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1087550A (en) * | 1964-01-03 | 1967-10-18 | Republic Of France | Improvements in or relating to nitro-cellulose production |
| CN102212978A (en) * | 2011-04-30 | 2011-10-12 | 李刚荣 | High-concentration digesting, bleaching and pulping integrated machine |
| CN202081340U (en) * | 2011-04-30 | 2011-12-21 | 李刚荣 | High yield environment-friendly papermaking pulping system |
| CN209619743U (en) * | 2019-02-19 | 2019-11-12 | 郓城海沁纤维有限公司 | A kind of pre- dipping machine of slurrying double helix |
| CN218637171U (en) * | 2022-09-30 | 2023-03-17 | 沁阳市中澳生物科技有限公司 | Novel cylinder pulping boiler |
| CN221753189U (en) * | 2023-11-02 | 2024-09-24 | 丹东东方轻工机械有限公司 | Integrated biomass pulping machine with a series of pulping processes |
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| CN117258676B (en) | 2025-12-19 |
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Effective date of registration: 20250722 Address after: 118011 No. 69 Longxing Street, Tongxing Town, Zhenan District, Dandong City, Liaoning Province Applicant after: Dandong Rongzhen Electromechanical Equipment Co.,Ltd. Country or region after: China Address before: 118011 No. 69 Longxing Street, Tongxing Town, Zhenan District, Dandong City, Liaoning Province Applicant before: DONGFANG LIGHT INDUSTRY MACHINERY Co.,Ltd. DANDONG Country or region before: China |
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