CN117661354A - Intelligent production process of microbial-driven environment-friendly fully-degradable straw paperboard - Google Patents
Intelligent production process of microbial-driven environment-friendly fully-degradable straw paperboard Download PDFInfo
- Publication number
- CN117661354A CN117661354A CN202311852958.9A CN202311852958A CN117661354A CN 117661354 A CN117661354 A CN 117661354A CN 202311852958 A CN202311852958 A CN 202311852958A CN 117661354 A CN117661354 A CN 117661354A
- Authority
- CN
- China
- Prior art keywords
- straw
- pulping
- microbial
- production process
- friendly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010902 straw Substances 0.000 title claims abstract description 133
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 41
- 230000000813 microbial effect Effects 0.000 title claims abstract description 31
- 239000011087 paperboard Substances 0.000 title abstract description 32
- 238000004537 pulping Methods 0.000 claims abstract description 56
- 229920002678 cellulose Polymers 0.000 claims abstract description 34
- 239000001913 cellulose Substances 0.000 claims abstract description 34
- 239000002131 composite material Substances 0.000 claims abstract description 28
- 241000193755 Bacillus cereus Species 0.000 claims abstract description 16
- 240000000599 Lentinula edodes Species 0.000 claims abstract description 16
- 235000001715 Lentinula edodes Nutrition 0.000 claims abstract description 16
- 241000589776 Pseudomonas putida Species 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 16
- 241000607715 Serratia marcescens Species 0.000 claims abstract description 15
- 241000222393 Phanerochaete chrysosporium Species 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims description 81
- 230000008569 process Effects 0.000 claims description 62
- 239000000047 product Substances 0.000 claims description 62
- 230000002950 deficient Effects 0.000 claims description 27
- 230000001580 bacterial effect Effects 0.000 claims description 24
- 239000000725 suspension Substances 0.000 claims description 24
- 239000002994 raw material Substances 0.000 claims description 22
- 230000000007 visual effect Effects 0.000 claims description 19
- 230000000593 degrading effect Effects 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 15
- 239000002068 microbial inoculum Substances 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 15
- 239000002699 waste material Substances 0.000 claims description 15
- 239000002002 slurry Substances 0.000 claims description 13
- 238000005507 spraying Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 11
- 238000005096 rolling process Methods 0.000 claims description 11
- 230000001954 sterilising effect Effects 0.000 claims description 11
- 238000003754 machining Methods 0.000 claims description 10
- 244000005700 microbiome Species 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 9
- 238000004806 packaging method and process Methods 0.000 claims description 8
- VMXJCRHCUWKQCB-UHFFFAOYSA-N NPNP Chemical compound NPNP VMXJCRHCUWKQCB-UHFFFAOYSA-N 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 238000007639 printing Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 5
- 239000002054 inoculum Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 2
- 238000000855 fermentation Methods 0.000 abstract description 24
- 230000004151 fermentation Effects 0.000 abstract description 24
- 238000002360 preparation method Methods 0.000 abstract description 2
- 239000002910 solid waste Substances 0.000 abstract description 2
- 229920005610 lignin Polymers 0.000 description 32
- 230000000052 comparative effect Effects 0.000 description 23
- 230000015556 catabolic process Effects 0.000 description 17
- 238000006731 degradation reaction Methods 0.000 description 17
- 239000000835 fiber Substances 0.000 description 17
- 241000209094 Oryza Species 0.000 description 14
- 235000007164 Oryza sativa Nutrition 0.000 description 14
- 235000009566 rice Nutrition 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000004659 sterilization and disinfection Methods 0.000 description 11
- 238000007730 finishing process Methods 0.000 description 10
- 238000004064 recycling Methods 0.000 description 8
- 239000000428 dust Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 239000002023 wood Substances 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 238000007689 inspection Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 231100000252 nontoxic Toxicity 0.000 description 3
- 230000003000 nontoxic effect Effects 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 241000233866 Fungi Species 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 239000002154 agricultural waste Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011111 cardboard Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000010297 mechanical methods and process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 238000011002 quantification Methods 0.000 description 2
- 230000008684 selective degradation Effects 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 240000000111 Saccharum officinarum Species 0.000 description 1
- 235000007201 Saccharum officinarum Nutrition 0.000 description 1
- 244000061456 Solanum tuberosum Species 0.000 description 1
- 235000002595 Solanum tuberosum Nutrition 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010908 plant waste Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Paper (AREA)
Abstract
The invention relates to an intelligent production process of a microbial-driven environment-friendly fully-degradable straw paperboard, belonging to the technical field of comprehensive utilization of agricultural solid wastes. According to the invention, phanerochaete chrysosporium, pseudomonas putida, serratia marcescens, bacillus cereus and Lentinus edodes are taken as composite microbial agents, and straw is subjected to microbial fermentation, and pulping is carried out by combining a pulping device, so that cellulose fluff pulp with remarkably improved mechanical properties is obtained. The straw paperboard prepared from the cellulose fluff pulp has almost full degradability and high mechanical property, and the preparation process is environment-friendly and pollution-free and has application value.
Description
Technical Field
The invention relates to the technical field of comprehensive utilization of agricultural solid wastes, in particular to an intelligent production process of an environment-friendly full-degradable straw paperboard driven by microorganisms.
Background
In recent years, the express industry develops rapidly, the packaging paper board becomes an important widely used packaging tool, and the demand of the express paper box increases dramatically. Due to the rapid deforestation, shortage of forest raw materials and aggravation of environmental pollution, crop waste straw becomes a substitute for wood and becomes a feasible packaging paperboard raw material. The raw material utilization rate of the straws is low at the present stage, and lignin in the straws is difficult to degrade to become a main problem of raw material utilization of the straws. At present, the common chemical method and mechanical method have high pulping energy consumption and pollute the environment, and lignin (Biological Mechanical Pulping) is degraded by combining a biological bacteria method with a mechanical method, so that the method is an efficient and environment-friendly straw raw material method. However, the problems of improper strain selection, longer fermentation period, high production cost and the like exist in the lignin degradation research aspect at home and abroad at present; the problems of serious raw material waste, coarse pulp straw fiber, high defective rate of products, poor product quality and the like exist in the straw raw material process, and the development of straw raw material is hindered.
Disclosure of Invention
First, the technical problem to be solved
In view of the above-mentioned shortcomings and disadvantages of the prior art, the invention provides an intelligent production process of microbial-driven environment-friendly fully-degradable straw paper board, which can be used for producing environment-friendly packaging materials such as recyclable packaging paper boxes, recyclable packaging boxes and recyclable paper boards, and the process has low energy consumption, no pollution and recycling of wastes, and the environment-friendly packaging material produced by the process has the mechanical characteristics of degradability, recyclability, high smoothness, low porosity, good tensile index, bending rigidity and the like, and achieves the purpose of straw raw material utilization.
(II) technical scheme
In order to achieve the above purpose, the main technical scheme adopted by the invention comprises the following steps:
in a first aspect, the invention provides a composite microbial inoculant for degrading straw, wherein the composite microbial inoculant comprises Phanerochaete chrysosporium, pseudomonas putida, serratia marcescens, bacillus cereus and Lentinus edodes.
Optionally, the colony number ratio of the Phanerochaete chrysosporium, the pseudomonas putida, the Serratia marcescens, the bacillus cereus and the lentinus edodes is 1-5:1-5:1-5:1-5:1-5.
Preferably, the colony number ratio of the Phanerochaete chrysosporium, the Pseudomonas putida, the Serratia marcescens, the Bacillus cereus and the Lentinus edodes is 1:1:1:1:1.
Optionally, the straw is one or more than two of rice straw, wheat straw, corn straw, potato straw, rape straw, cotton straw or sugarcane straw.
Preferably, the straw is rice straw.
In a second aspect, the present invention provides a pulping process for degrading straw using microorganisms, comprising the steps of:
s1, straw pretreatment;
s2, preparing a bacterial suspension by using the composite microbial inoculum of claim 1 or 2, mixing the straw pretreated in the step S1 with the bacterial suspension, and fermenting for 20-25 days at 20-60 ℃ to obtain straw slurry;
s3, pulping the straw pulp obtained in the step S2 through a pulping device to obtain cellulose fluff pulp.
Optionally, in step S1, the straw pretreatment includes: removing mildew and rot parts of the straw after drying, crushing to 3-5cm, and removing impurity particles to obtain the pretreated straw.
Optionally, in step S2, the bacterial suspension has a bacterial density of 1000-1200kg/m 3 The method comprises the steps of carrying out a first treatment on the surface of the The mass ratio of the pretreated straw to the bacterial suspension is 20-25:1.
Optionally, in step S3, the pulping device is a twin screw pulping device, the combination form of the spiral sleeve is NPNP, the angular arrangement form of the tooth grooves of the counter-pressure spiral sleeve is WSR, and the pulping is performed at 550-600 rpm.
In a third aspect, the invention provides an intelligent production process for microbial-driven environment-friendly full-degradable straw raw material, which comprises the following steps:
s1, pulping: preparing cellulose fluff pulp from the straw by using the pulping process;
s2, a plate making process: performing hot press molding on cellulose fluff pulp to obtain a primary molded plate, and performing rolling rough machining to obtain a rough machined molded plate;
s3, a fine machining process: according to the preset visual effect of the product, uniformly spraying a water-proof and oil-proof agent on the surface of the rough machining forming plate, and sterilizing to obtain a pattern printing forming plate;
s4, a quality detection process: the pattern printing forming plate is subjected to quality detection and sorting through a visual identification device and a defective product sorting device, and qualified products are collected.
Optionally, the waste material generated in the process of obtaining the primary forming board by hot press forming the cellulose fluff pulp in the step S2 and the defective products separated in the step S4 are returned to the step S1 for re-pulping.
Optionally, the production process is controlled by an intelligent control system, and the intelligent control system comprises an electromagnetic alarm system, a speed regulation and quantification system, a hot press forming system, a roll processing system, an image processing system, a surface spraying system, a visual identification system and a defective sorting system.
Optionally, the water and oil repellent agent is wood wax oil.
Optionally, the sterilization is ozone sterilization and ultraviolet sterilization.
In a fourth aspect, the invention provides an application of a microbial-driven environment-friendly full-degradable straw raw material intelligent production process in preparing packaging paperboards.
(III) beneficial effects
The beneficial effects of the invention are as follows:
in the intelligent production process of the microbial-driven environment-friendly fully-degradable straw paperboard, the main raw materials are agricultural waste straws, and the agricultural waste straws are environment-friendly non-toxic and harmless additives, and no chemical addition is adopted, so that the prepared product can be fully degraded after being abandoned, and zero pollution is truly realized. The pulping process drives lignin in the straw to degrade through microorganisms, and combines the extrusion shearing effect of the double-screw device, so that lignin in the straw is efficiently and selectively degraded, and cellulose is mostly reserved, thereby ensuring that the product has higher mechanical strength. In the process of preparing the paperboard products, the design is carried out according to the required visual effect of the products, the grade and diversity of the products are improved, the visual identification device and the defective product sorting device are used for quality detection and defective product sorting, the production efficiency is effectively improved, and the defective rate of the products is reduced; the adopted waterproof and oil-proof agent (wood wax oil) is environment-friendly, nontoxic and harmless, so that the environment-friendly performance is greatly improved, and the surface smoothness of the product is improved; the whole production process is managed and optimized through the intelligent control system, parameters of each step can be monitored and adjusted in real time, and efficient, stable and reliable operation of the whole production process is ensured. The straw paper board preparation process ensures no sewage discharge in the whole process through the combined action of straw degradation driven by the microorganism, mechanical structure and intelligent control, achieves the aims of clean pulping and efficient board making, improves the resource utilization rate, reduces environmental pollution and shows high industrial application value.
The composite microbial agent for degrading straw consists of microorganisms with higher selective lignin degrading capability, and comprises Phanerochaete chrysosporium (Phanerochaete chrysosporium), pseudomonas putida (Pseudomonas putida), serratia marcescens (Serratia marcescens), bacillus cereus (Bacillus cereus) and Lentinus edodes (Lentinula edodes), wherein in the pulping process for degrading straw, the mutual symbiotic synergy among all the strains can jointly promote the efficient degradation of lignin. The composite microbial inoculum has short fermentation time, and can be shortened to 20-25 days from the traditional fermentation period of about 1 month.
In the pulping process, lignin in the straw is degraded by utilizing the composite microbial inoculum, and most of cellulose in the straw is reserved by combining a double-screw pulping device, so that the cellulose fluff pulp with higher quality is obtained. The pulping process can be particularly used for degrading lignin in straws, the selective degradation rate of lignin is high, and most cellulose can be reserved, so that the mechanical property of the pulp is improved. The cellulose fluff pulp has good fiber mechanical properties, and greatly improved tensile strength, shearing strength, bending strength and elastic modulus.
When the quality detection is carried out on the final product, the quality detection is carried out by using the visual identification device and the defective product sorting is carried out by using the defective product sorting device, so that the production efficiency is effectively improved, the reject ratio of the product is reduced, the waste materials in the production process are recycled, and the concepts of environmental protection and resource recycling are embodied. The mechanical properties of the straw paper board prepared by the invention are further improved, and the straw paper board can be basically fully degraded after waste gas, and has almost no pollution to the environment.
Drawings
FIG. 1 is a flow chart of an intelligent microbial-driven environment-friendly fully-degradable straw raw material production process;
fig. 2 is a flow chart of an intelligent production process and equipment for microbial-driven environment-friendly full-degradable straw raw material.
[ reference numerals description ]
1: a rice straw raw material; 2: a straw rubbing machine; 3: a cyclone dust removal device; 4: a fermentation reactor; 5: a feeding device; 6: horizontal double-screw pulping device; 7: a speed-regulating quantitative feeding device; 8: a hot press molding device; 9: a roll-in roughing device; 10: an image processing device; 11: a surface spraying device; 12: a high-temperature disinfection and sterilization device; 13: a visual recognition device; 14: a defective product sorting device; 15: a warehouse; 16: a waste recycling device; 17: an intelligent control system.
Detailed Description
The invention will be better explained by the following detailed description of the embodiments with reference to the drawings.
In order that the above-described aspects may be better understood, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The invention provides microorganism-driven environment-friendly full-degradable straw raw material intelligent production process equipment, which is shown in fig. 2 and comprises a straw filament kneading machine 2, a cyclone dust collector 3, a fermentation reactor 4, a feeding device 5, a horizontal double-screw pulping device 6, a speed-regulating quantitative feeding device 7, a hot press forming device 8, a rolling rough machining device 9, an image processing device 10, a surface spraying device 11, a high-temperature disinfection and sterilization device 12, a visual identification device 13, a defective product sorting device 14 and a warehouse 15 which are sequentially connected.
The production process equipment also comprises a waste recycling device 16 and an intelligent control system 17, wherein the waste recycling device 16 is used for recycling waste generated by the hot press forming device 8 and defective products sorted by the defective product sorting device 14, and the waste is recycled by the waste recycling device 16 and then sent into the horizontal double-screw pulping device 6 for re-pulping.
The intelligent control system (PLC) 17 includes an electromagnetic alarm system, a speed regulation and quantification system, a hot press forming system, a roll processing system, an image processing system, a surface spraying system, a visual recognition system, and a defective sorting system.
The electromagnetic alarm system can monitor the safety problem in the production process in real time through the program control center. When any equipment in the production process equipment fails, the electromagnetic alarm system can be automatically started to ensure the safe and stable operation of the equipment.
The speed-regulating and quantifying system is electrically connected with the liquid medicine feeding device 5 and is used for controlling the slurry entering the horizontal double-screw pulping device 6. The feeding speed of the raw materials is monitored in real time through the sensor, and the feeding speed is automatically adjusted according to the requirement, so that stable processing parameters in the pulping process are ensured.
The hot press forming system is connected with the hot press forming device 8 through electric signals, the working state of the hot press forming device 8 is monitored in real time by utilizing a temperature sensor and a pressure sensor, and heating and pressure parameters are adjusted through an intelligent control algorithm, so that the product quality and the stable form in the plate making process are ensured.
The rolling system is electrically connected with the rolling roughing device 9, the working state of the rolling roughing device 9 is monitored in real time, and intelligent adjustment is performed according to the product parameter requirement, so that the thickness and the surface quality of a product in the roughing process are ensured.
The image processing system is connected with the image processing device 10 through an electric signal, and the image processing system combines the image processing device and the appearance design technology to realize automatic design and adjustment of the appearance of the product, so that the product is ensured to meet the specific requirements of the environment-friendly fully-degradable straw raw material product in appearance.
The surface spraying system is electrically connected with the surface spraying device 11, monitors the working state of the surface spraying device 11 in real time, and intelligently adjusts according to the product types and quality requirements so as to ensure the uniformity and the coating quality of the product in the surface spraying process.
The visual recognition system is in electrical signal connection with the visual recognition device 13, and the visual recognition system adopts a scanning device to detect the quality of defective products and detect and recognize the products in real time so as to ensure that the appearance and the size of the products in the finish machining process meet the standard requirements.
The defective product sorting system is electrically connected with the defective product sorting device 14, and the defective product sorting system is combined with the result of the visual recognition system to automatically sort out defective products from the production line so as to ensure the product quality and the production efficiency.
Example 1
The embodiment provides an intelligent production process of a microbial-driven environment-friendly fully-degradable straw paperboard, which comprises a pulping process, a board making process, a finishing process and a quality detection process. And the automatic control is realized through an intelligent control system in the production process, and manual operation is not needed.
The pulping process of the embodiment comprises the following steps:
step A1: naturally airing the harvested mature rice straw by a straw rubbing machine 2 to remove moldy and rotten parts, so as to avoid the harm of the manufactured product to human bodies; and then crushing the rice straw to 3cm, and removing impurity particles through a cyclone dust removing device 3 to obtain the pretreated straw.
Step A2: preparing a composite bacterial agent suspension consisting of Phanerochaete chrysosporium (Phanerochaete chrysosporium), pseudomonas putida (Pseudomonas putida), serratia marcescens (Serratia marcescens), bacillus cereus (Bacillus cereus) and Lentinus edodes (Lentinula edodes) according to the mass ratio of 1:1:1:1:1. Mixing the composite bacterial agent suspension with water according to the mass ratio of 1:10 to obtain the bacterial density of 1000kg/m 3 The bacterial suspension is added to the fermentation reactor 4. The straw is added into the fermentation reactor 4 according to the mass ratio of the straw to the water in the fermentation reactor 4 of 1:2, and at the moment, the mass ratio of the composite microbial inoculum suspension to the straw is 1:20. Fermenting for 25 days at 20 ℃ to obtain straw slurry for preliminary degradation of lignin;
the composite microbial inoculum has higher capability of selectively degrading lignin, can well retain cellulose while degrading lignin, so that the cellulose is retained in the treatment process, more raw materials which can be used in the subsequent conversion process are provided, and the more environment-friendly and economical bioconversion process is realized.
Step A3: the straw pulp of the preliminary degradation lignin is sent into a horizontal double-screw pulping device 6 through a feeding device 5, the combination form of a spiral sleeve is NPNP, the angular arrangement form of tooth grooves of a counter-pressure spiral sleeve is WSR, and the pulp is continuously prepared at 550 revolutions per minute, so that cellulose fluff pulp with the lignin selectively degraded and most of cellulose reserved is obtained.
The impurity aqueous solution generated in the pulping process of the horizontal double-screw pulping device 6 is discharged through a drain pipe, and the impurity aqueous solution does not contain chemical components and can be used for toilet cleaning, farmland irrigation, road surface cleaning and the like.
The plate manufacturing process of the embodiment comprises the following steps:
step B1: the cellulose fluff pulp is sent into a hot press forming device 8 through a speed regulation and quantitative feeding device 7, and is hot press formed into a primary forming plate, and waste materials generated in the process can be sent into a waste material recovery device 16 through a conveyor belt;
step B2: the primary molded plate enters a rolling roughing device 9 for rolling roughing to obtain a roughing molded plate. In the rolling rough machining process, the product needs to be ensured to obtain even pressure distribution in the rolling process, so that the surface of the primary forming plate is smoother, the size is more accurate, and the overall quality of the product is improved.
The finishing process of the embodiment comprises the following steps:
step C1: the rough forming board enters the image processing device 10 to carry out appearance design, the image processing device 10 executes commands according to a set program, and different appearances of different programs can be formulated to realize product diversification;
step C2: after the appearance design, the product enters a surface spraying device 11 to be subjected to surface treatment, and trace amount of environment-friendly waterproof and oil-proof agent wood wax oil is uniformly sprayed on the surface to achieve the aim of preventing water and oil;
the wood wax oil is nontoxic and harmless, has high safety, and protects the environment and the health of users from the source.
Step C3: the product sprayed with wood wax oil enters a high-temperature sterilization device 12, and ozone sterilization and ultraviolet sterilization are carried out in the high-temperature sterilization device 12 so as to kill microorganisms such as bacteria and fungi on the surface of the product, thus obtaining the pattern printing forming plate.
The quality detection process of the embodiment comprises the following steps:
step D1: the pattern forming plate is transmitted to the visual recognition device 13 through a U-shaped conveyor belt for quality detection. The cam mechanism and the parallel link mechanism in the visual recognition device 13 realize up-and-down movement through the forward and reverse rotation of the driving motor, and scan the printing forming plate by matching with the obstacle clearing manipulator. The visual recognition device 13 utilizes an infrared scanning system to detect the quality of the defective products so as to ensure that the appearance and the size of the products in the finish machining process meet the standard requirements, reduce the reject ratio of the products and realize high-efficiency and high-quality production;
step D2: the defective sorting device 14 sorts defective products and good products according to the detection result of the step D1, and the defective products are sent to the waste recycling device 16 through a conveyor belt to complete the sorting process;
step D3: based on the sorting result of the step D2, the qualified product is sent to the warehouse 15 to finish the product operation, and the straw paper board with the thickness of 2mm is obtained.
Example 2
The embodiment provides an intelligent production process of a microbial-driven environment-friendly fully-degradable straw paperboard, which comprises a pulping process, a board making process, a finishing process and a quality detection process. And the automatic control is realized through an intelligent control system in the production process, and manual operation is not needed.
The pulping process of the embodiment comprises the following steps:
step A1: naturally airing the harvested mature rice straw by a straw rubbing machine 2 to remove moldy and rotten parts, so as to avoid the harm of the manufactured product to human bodies; and then crushing the rice straw to 5cm, and removing impurity particles through a cyclone dust removing device 3 to obtain the pretreated straw.
Step A2: preparing a composite bacterial agent suspension consisting of Phanerochaete chrysosporium, pseudomonas putida, serratia marcescens, bacillus cereus and Lentinus edodes according to the mass ratio of 1:1:1:1:1. Mixing the composite microbial inoculum suspension with water according to the mass ratio of 1:5 to obtain the bacterial density of 1100kg/m 3 The bacterial suspension is added to the fermentation reactor 4. Mixing straw and water according to the mass ratio of 1:2, and sending the mixture into a fermentation reactor 4, wherein the temperature is controlled at 60 ℃, and fermenting for 20 days to obtain straw slurry for primarily degrading lignin;
step A3: the straw pulp of the preliminary degradation lignin is sent into a horizontal double-screw pulping device 6 through a feeding device 5, the combination form of a spiral sleeve is NPNP, the angular arrangement form of tooth grooves of a counter-pressure spiral sleeve is WSR, and the pulp is continuously prepared at 600 revolutions per minute, so that cellulose fluff pulp with the lignin selectively degraded and most of cellulose reserved is obtained.
The plate making process, the finishing process and the quality inspection process method of this embodiment are the same as those of embodiment 1.
Example 3
The embodiment provides an intelligent production process of a microbial-driven environment-friendly fully-degradable straw paperboard, which comprises a pulping process, a board making process, a finishing process and a quality detection process. And the automatic control is realized through an intelligent control system in the production process, and manual operation is not needed.
The pulping process of the embodiment comprises the following steps:
step A1: naturally airing the harvested mature rice straw by a straw rubbing machine 2 to remove moldy and rotten parts, so as to avoid the harm of the manufactured product to human bodies; and then crushing the rice straw to 4cm, and removing impurity particles through a cyclone dust removing device 3 to obtain the pretreated straw.
Step A2: preparing a composite bacterial agent suspension consisting of Phanerochaete chrysosporium, pseudomonas putida, serratia marcescens, bacillus cereus and Lentinus edodes according to the mass ratio of 1:2:1:1:2. Mixing the composite microbial inoculum suspension with water according to the mass ratio of 1:5 to obtain the microbial cell density of 1200kg/m 3 The bacterial suspension is added to the fermentation reactor 4. Mixing straw and water according to a mass ratio of 1:2, and sending the mixture into a fermentation reactor 4, wherein the temperature is controlled at 40 ℃, and fermenting for 22 days to obtain straw slurry for primarily degrading lignin;
step A3: the straw pulp of the preliminary degradation lignin is sent into a horizontal double-screw pulping device 6 through a feeding device 5, the combination form of a spiral sleeve is NPNP, the angular arrangement form of tooth grooves of a counter-pressure spiral sleeve is WSR, and the pulp is continuously prepared at 550 revolutions per minute, so that cellulose fluff pulp with the lignin selectively degraded and most of cellulose reserved is obtained.
The plate making process, the finishing process and the quality inspection process method of this embodiment are the same as those of embodiment 1.
Example 4
The embodiment provides an intelligent production process of a microbial-driven environment-friendly fully-degradable straw paperboard, which comprises a pulping process, a board making process, a finishing process and a quality detection process. And the automatic control is realized through an intelligent control system in the production process, and manual operation is not needed.
The pulping process of the embodiment comprises the following steps:
step A1: naturally airing the harvested mature rice straw by a straw rubbing machine 2 to remove moldy and rotten parts, so as to avoid the harm of the manufactured product to human bodies; and then crushing the rice straw to 3cm, and removing impurity particles through a cyclone dust removing device 3 to obtain the pretreated straw.
Step A2: preparing a composite bacterial agent suspension consisting of Phanerochaete chrysosporium, pseudomonas putida, serratia marcescens, bacillus cereus and Lentinus edodes according to the mass ratio of 1:2:2:1:2. Mixing the composite microbial inoculum suspension with water according to the mass ratio of 1:5 to obtain the microbial cell density of 1200kg/m 3 The bacterial suspension is added to the fermentation reactor 4. Mixing straw and water according to a mass ratio of 1:2, and sending the mixture into a fermentation reactor 4, wherein the temperature is controlled at 50 ℃, and fermenting for 20 days to obtain straw slurry for primarily degrading lignin;
step A3: the straw pulp of the preliminary degradation lignin is sent into a horizontal double-screw pulping device 6 through a feeding device 5, the combination form of a spiral sleeve is NPNP, the angular arrangement form of tooth grooves of a counter-pressure spiral sleeve is WSR, and the pulp is continuously prepared at 550 revolutions per minute, so that cellulose fluff pulp with the lignin selectively degraded and most of cellulose reserved is obtained.
The plate making process, the finishing process and the quality inspection process method of this embodiment are the same as those of embodiment 1.
Example 5
The embodiment provides an intelligent production process of a microbial-driven environment-friendly fully-degradable straw paperboard, which comprises a pulping process, a board making process, a finishing process and a quality detection process. And the automatic control is realized through an intelligent control system in the production process, and manual operation is not needed.
The pulping process of the embodiment comprises the following steps:
step A1: naturally airing the harvested mature rice straw by a straw rubbing machine 2 to remove moldy and rotten parts, so as to avoid the harm of the manufactured product to human bodies; and then crushing the rice straw to 3cm, and removing impurity particles through a cyclone dust removing device 3 to obtain the pretreated straw.
Step A2: preparing a composite bacterial agent suspension consisting of Phanerochaete chrysosporium, pseudomonas putida, serratia marcescens, bacillus cereus and Lentinus edodes according to the mass ratio of 1:1:2:2:2. Mixing the composite microbial inoculum suspension with water according to the mass ratio of 1:5 to obtain the microbial cell density of 1200kg/m 3 The bacterial suspension is added to the fermentation reactor 4. Mixing straw and water according to a mass ratio of 1:2, and sending the mixture into a fermentation reactor 4, wherein the temperature is controlled at 30 ℃, and fermenting for 25 days to obtain straw slurry for primarily degrading lignin;
step A3: the straw pulp of the preliminary degradation lignin is sent into a horizontal double-screw pulping device 6 through a feeding device 5, the combination form of a spiral sleeve is NPNP, the angular arrangement form of tooth grooves of a counter-pressure spiral sleeve is WSR, and the pulp is continuously prepared at 550 revolutions per minute, so that cellulose fluff pulp with the lignin selectively degraded and most of cellulose reserved is obtained.
The plate making process, the finishing process and the quality inspection process method of this embodiment are the same as those of embodiment 1.
Comparative example 1
In the comparative example, no composite microbial inoculum is added in the pulping process, the pretreated straw is directly put into a fermentation tank for fermentation at the temperature of 20 ℃ for 40 days, and the rest method is the same as that in example 1.
Comparative example 2
The composite microbial inoculum of the comparative example is Pseudomonas putida, bacillus cereus and Lentinus edodes with the mass ratio of 1:1:1, and the rest methods are the same as in example 1.
Comparative example 3
The composite microbial inoculum of the comparative example is Pseudomonas putida, serratia marcescens, bacillus cereus and Lentinus edodes with the mass ratio of 1:1:1:1, and the rest method is the same as that of the example 1.
Application example 1
The mechanical strength of the cellulose fluff pulp prepared by pulping the rice straw in examples 1-5 and comparative examples 1-3 was measured, and the results are shown in Table 1; the fiber components of the cellulosic fluff pulp were tested and the results are shown in table 2; the fiber data in the cellulosic fluff pulp is shown in table 3.
Table 1: fiber mechanical Strength data for cellulosic fluff pulp
Table 2: fiber composition data for cellulosic fluff pulp
Table 3: fiber data for cellulosic fluff pulp
| Fiber length (mm) | Cellulose width (mum) | Aspect ratio | |
| Comparative example 1 | 1.255 | 36.5 | 34.38 |
| Comparative example 2 | 1.185 | 28.9 | 40.87 |
| Comparative example 3 | 1.181 | 28.2 | 42.02 |
| Example 1 | 1.198 | 26.6 | 45.04 |
| Example 2 | 1.199 | 26.5 | 45.25 |
| Example 3 | 1.197 | 26.3 | 45.51 |
| Example 4 | 1.196 | 26.4 | 45.30 |
| Example 5 | 1.199 | 26.7 | 44.91 |
The invention prepares the fiber fluff pulp with the fiber with the better length-width ratio by a method of microbial fermentation and mechanical treatment, and the mechanical strength of the fiber in the sizing material is obviously improved. Comparative example 1 only used mechanical treatment, no fermentation with microorganisms, longer fermentation period, and lower mechanical strength of the fibers in the resulting slurry. Compared with comparative example 1, the tensile strength of the fiber in the slurry of example 1 was increased by 19.28%, the shear strength was increased by 31.76%, the flexural strength was increased by 10.03%, and the elastic modulus was increased by 17.30%. Comparative example 2 and comparative example 3 also used a method of microbial fermentation + mechanical treatment, but the formulation of the complex microbial agent was different from that of example 1. The comparative examples 2 and 3 used only three or four of the composite bacterial agents of example 1, and the mechanical strength of the fibers in the slurry was improved to some extent, but the effect was far less than that of example 1. In the composite microbial inoculum, five strains play a synergistic role, play a role in specific degradation of lignin in slurry, and combine mechanical treatment to finally obtain cellulose fluff slurry with lignin selectively degraded and cellulose mostly reserved.
Application example 2
The mechanical strength test was performed on the straw paperboards obtained in examples 1 to 5 and comparative examples 1 to 3, and the results are shown in Table 4.
Table 4: mechanical strength of straw paper board
The result shows that the straw paperboard prepared by the method has excellent tensile strength, shearing strength, bending strength and puncture strength. As the comparative example 1 does not adopt microbial fermentation, the obtained fiber has higher lignin content and poorer mechanical property of the fiber, and the mechanical property of the prepared straw paperboard is also poorer. The strains in the composite microbial inoculum of the comparative example 2 and the comparative example 3 can not play a synergistic effect, only play the effect of degrading lignin singly, have low selective degradation rate on lignin, influence the mechanical properties of the obtained fibers, and further influence the mechanical properties of the prepared paperboard. The invention improves the mechanical strength of the paperboard by unique strain combination and mechanical treatment under specific conditions, so that the paperboard has stronger applicability, and can be used as a packaging box, and the anti-impact and anti-beating performances are obviously improved.
Application example 3
The sample of straw board prepared in example 1 was taken, weighing about 50 g each, and a waste degradation system was designed in which the temperature was maintained at 55-60 ℃ and the humidity was maintained at 50-60% and a good ventilation system was provided, microorganisms (mainly white rot fungi) having the ability to degrade lignocellulose were added, and the board sample was inspected every 7 days and its weight and appearance changes were recorded, and the results are shown in table 5.
TABLE 5 full degradation Properties of straw cardboard
| Sample weight (g) | Cellulose content% | Tensile Strength (MPa) | Puncture strength (MPa) | |
| Initial value | 50.00 | 55.20 | 2.72 | 0.70 |
| Day 7 | 43.00 | 48.00 | 2.10 | 0.55 |
| Day 14 | 35.50 | 42.00 | 1.65 | 0.45 |
| Day 21 | 30.20 | 37.00 | 1.35 | 0.37 |
| Day 28 | 26.40 | 33.00 | 1.15 | 0.32 |
| Day 35 | 20.20 | 27.32 | 1.02 | 0.28 |
| Day 42 | 15.80 | 20.26 | 0.93 | 0.25 |
| Day 49 | 13.50 | 14.66 | 0.87 | 0.23 |
| Day 56 | 11.20 | 10.33 | 0.82 | 0.21 |
| Day 63 | 9.30 | 7.86 | 0.78 | 0.19 |
| Day 70 | 6.46 | 5.21 | 0.75 | 0.17 |
| Day 77 | 5.42 | 3.69 | 0.73 | 0.15 |
| Day 84 | 3.25 | 2.45 | 0.71 | 0.13 |
| Day 90 | 2.50 | 1.30 | 0.70 | 0.12 |
| Rate of change | 95.00％ | 97.64％ | 74.26％ | 82.86％ |
The results of the composting degradation test on the straw paper board prove that after the straw paper board prepared by the method is degraded for 90 days, the measurable cellulose and hemicellulose content in the straw is reduced by 95%, namely, the straw paper board is nearly fully degraded. The same method was used to test the degradation of the cardboard samples of comparative example 2 and comparative example 3, and the results showed that the degradation rate of the sample of comparative example 2 was 86.20% for 90 days and the degradation rate of the sample of comparative example 3 was 89.20% for 90 days. The paperboard prepared by the method has more excellent degradation rate, can be basically and completely degraded after being abandoned, and greatly reduces the pollution to the environment.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. The composite microbial agent for degrading straw is characterized by comprising Phanerochaete chrysosporium, pseudomonas putida, serratia marcescens, bacillus cereus and Lentinus edodes.
2. The straw degrading composite microbial inoculant according to claim 1, wherein the colony number ratio of Phanerochaete chrysosporium, pseudomonas putida, serratia marcescens, bacillus cereus and Lentinus edodes is 1-2:1-2:1-2:1-2:1-2.
3. A pulping process for degrading straws by utilizing microorganisms is characterized by comprising the following steps:
s1, straw pretreatment;
s2, preparing a bacterial suspension by using the composite microbial inoculum of claim 1 or 2, mixing the straw pretreated in the step S1 with the bacterial suspension, and fermenting for 20-25 days at 20-60 ℃ to obtain straw slurry;
s3, pulping the straw pulp obtained in the step S2 through a pulping device to obtain cellulose fluff pulp.
4. A pulping process using micro-biodegradable straw according to claim 3, wherein in step S1, the straw pretreatment comprises: removing mildew and rot parts of the straw after drying, crushing to 3-5cm, and removing impurity particles to obtain the pretreated straw.
5. A pulping process using biodegradable straw according to claim 3, wherein in step S2, the bacterial suspension has a bacterial density of 1000-1200kg/m 3 The method comprises the steps of carrying out a first treatment on the surface of the The mass ratio of the pretreated straw to the bacterial suspension is 20-25:1.
6. A pulping process using biodegradable straw according to claim 3, wherein in step S3, the pulping device is a twin screw pulping device, the combination of the screw jackets is NPNP, the angular arrangement of the tooth grooves of the counter-pressure screw jackets is WSR, and the pulping is performed at 550-600 rpm.
7. A microbial-driven environment-friendly full-degradable straw raw material intelligent production process is characterized by comprising the following steps:
s1, pulping: making the straw into cellulose fluff pulp using the pulping process of any one of claims 3-6;
s2, a plate making process: performing hot press molding on cellulose fluff pulp to obtain a primary molded plate, and performing rolling rough machining to obtain a rough machined molded plate;
s3, a fine machining process: according to the preset visual effect of the product, uniformly spraying a water-proof and oil-proof agent on the surface of the rough machining forming plate, and sterilizing to obtain a pattern printing forming plate;
s4, a quality detection process: the pattern printing forming plate is subjected to quality detection and sorting through a visual identification device and a defective product sorting device, and qualified products are collected.
8. The intelligent production process for microbial-driven environment-friendly fully-degradable straw raw materials according to claim 7, wherein waste materials generated in the process of obtaining a primary molding plate from cellulose fluff pulp in the step S2 through hot press molding and defective products separated from defective products in the step S4 are returned to the step S1 for re-pulping.
9. The microbial-driven environment-friendly fully-degradable straw raw material intelligent production process according to claim 7, wherein the production process is controlled by an intelligent control system, and the intelligent control system comprises an electromagnetic alarm system, a speed-regulating and quantifying system, a hot-press forming system, a rolling processing system, an image processing system, a surface spraying system, a visual recognition system and a defective sorting system.
10. Use of the production process according to any one of claims 7-9 for the manufacture of packaging board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311852958.9A CN117661354A (en) | 2023-12-29 | 2023-12-29 | Intelligent production process of microbial-driven environment-friendly fully-degradable straw paperboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311852958.9A CN117661354A (en) | 2023-12-29 | 2023-12-29 | Intelligent production process of microbial-driven environment-friendly fully-degradable straw paperboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117661354A true CN117661354A (en) | 2024-03-08 |
Family
ID=90066176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311852958.9A Pending CN117661354A (en) | 2023-12-29 | 2023-12-29 | Intelligent production process of microbial-driven environment-friendly fully-degradable straw paperboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117661354A (en) |
-
2023
- 2023-12-29 CN CN202311852958.9A patent/CN117661354A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5705216A (en) | Production of hydrophobic fibers | |
| CN108442162B (en) | Crop straw biological pulping method and papermaking pulp | |
| CN109577060B (en) | Method for preparing natural-color biomechanical pulp by treating wheat straw with hot water and alkaline biological enzyme | |
| CN1827910A (en) | Pulp making process employing straw to make environment-friendly paper film | |
| CN103189521A (en) | Method for enzymatic saccharification of lignocellulosic biomass, and method for manufacturing ethanol from lignocellulosic biomass | |
| CN109680530B (en) | Method for preparing natural-color biomechanical pulp by treating wheat straw with hot steam and biological enzyme | |
| CN100424260C (en) | Mechanical cold method for making paper pulp | |
| CN100491465C (en) | Preparation method of ramie stem and plastic composite material | |
| ITMI960160A1 (en) | PROCEDURE FOR THE PRODUCTION OF CELLULOSIC PAPER PASTES BY BIODELIGNIFICATION FROM VEGETABLE MASS PARTICULARLY OF | |
| CN110541319B (en) | Natural color bamboo pulp preparation process and system | |
| CN110453519B (en) | Pulping method of edible fungus residues | |
| CN110700004B (en) | Preparation method of natural-color bamboo fiber biochemical mechanical pulp | |
| CN101054778A (en) | Method for preparing paper pulp by fiber residue generated during microorganism product fermentation | |
| CN102212582B (en) | Method for preparing cellulose from straws by using biological method | |
| CN103103864B (en) | Method for preparing chemical-mechanical pulp for corrugating medium by using palm fresh empty fruit bunches | |
| CN117661354A (en) | Intelligent production process of microbial-driven environment-friendly fully-degradable straw paperboard | |
| CN109537352B (en) | Catalyst for catalyzing plant fiber pulping by ZYX presoaking and application process | |
| CN115787331A (en) | Preparation method of full straw biochemical mechanical pulp | |
| CN115029947A (en) | Method for preparing APMP slurry by utilizing double screws pretreated by microorganisms | |
| CA2885522C (en) | Complex microbial flora and application thereof | |
| CN112160180A (en) | Production process of biochemical mechanical pulp | |
| CN112458753A (en) | Preparation method and application of wood fiber material | |
| CN1188830A (en) | Biological delignification-machinery pulping technology | |
| CN114561822A (en) | Method for quickly producing paper pulp by using straws, paper pulp treatment and application | |
| CN116144554A (en) | Method for preparing straw cellulose pulp board by using biomechanical method and application of straw cellulose pulp board in production of cardboard paper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |