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CN-121974732-A - Method for comprehensively utilizing Quan Zhuduo-dimension arundo donax

CN121974732ACN 121974732 ACN121974732 ACN 121974732ACN-121974732-A

Abstract

The invention discloses a method for comprehensively utilizing the Quan Zhuduo-dimension of arundo donax, and belongs to the field of comprehensive utilization of biomass resources. The method comprises the steps of preprocessing raw materials to separate components of arundo donax, and respectively realizing multi-industry conversion by using bamboo stalks, bamboo leaves, bamboo sheaths and bamboo roots through steam explosion, extraction, modification and other processes, wherein by-products are fermented by biogas to form closed-loop utilization. The optimized technological parameters are adopted, the resource utilization rate exceeds 95%, seven industries are covered, the ecological and economic benefits are obvious, the process is mature and controllable, the industrial popularization is easy, the problems of waste, low added value and the like in the prior art are solved, and the support is provided for the efficient utilization of the arundo donax.

Inventors

  • WEI JIANHUA
  • Quan Youshan
  • QIAO GUANFANG

Assignees

  • 广元艾竹麻科技开发有限公司

Dates

Publication Date
20260505
Application Date
20260126

Claims (9)

  1. 1. The method for comprehensively utilizing the dimension of the arundo donax Quan Zhuduo is characterized by comprising the following steps of: Step 1, raw material pretreatment, namely collecting fresh arundo donax, separating to obtain bamboo stalks, bamboo leaves, bamboo sheaths and bamboo roots, respectively cleaning and removing impurities of the components, cutting the bamboo stalks into sections of 20-30cm, crushing the bamboo leaves and the bamboo sheaths to 1-2cm particles, and crushing the bamboo roots to 0.5-1cm particles; Step 2, converting the components of the bamboo stalks, namely, taking part of bamboo stalk segments, performing steam explosion pretreatment, drying until the water content is 10-15%, and compressing to prepare biomass granular fuel; step 3, bamboo She Zufen is transformed, namely, part of bamboo leaf particles are extracted by ethanol reflux to obtain a bamboo leaf flavone extract, and residues after extraction are processed to prepare feed or an organic fertilizer additive; Step 4, bamboo sheath component conversion, namely, taking part of bamboo sheath particles, carrying out modification treatment to prepare an adsorption material, taking part of bamboo sheath particles, crushing, mixing with auxiliary materials to prepare a degradable packaging material, and taking the whole bamboo sheath for braiding after softening and drying treatment; step 5, bamboo root component conversion, namely, taking part of bamboo root particles, decocting and extracting with water to obtain an active ingredient extract of the bamboo root, and using the extracted residues for preparing organic potassium fertilizer by mixed fuel or composting fermentation; And step 6, recycling byproducts, namely collecting wastewater generated in each step, performing biogas fermentation after being treated by activated sludge, wherein the generated biogas is used for power generation or civil fuel gas, and collecting fermentation residues and combustion ashes generated in each step to prepare organic fertilizer or mineral fertilizer.
  2. 2. The method for comprehensively utilizing the Quan Zhuduo-dimension of the arundo donax as claimed in claim 1, wherein the parameters of the steam explosion pretreatment in the step 2 are that the pressure is 1.2-1.5MPa and the maintenance time is 4-5min.
  3. 3. The method for comprehensively utilizing the Quan Zhuduo-dimension of the arundo donax as claimed in claim 1 is characterized in that the length of the long fiber in the step 2 is larger than 1cm, the length of the short fiber is smaller than 1cm, and when the short fiber is used for preparing the wood-plastic master batch, the mass ratio of the short fiber to the polypropylene is 1:2, the processing temperature is 180 ℃, and the wood-plastic master batch is prepared by adopting plastic extrusion molding equipment.
  4. 4. The method for comprehensively utilizing the Quan Zhuduo-dimension of the arundo donax as claimed in claim 1, wherein the bamboo stalks in the step2 are used for preparing daily necessities, the bamboo stalk sections are subjected to anti-corrosion treatment, and the anti-corrosion treatment is that the bamboo stalk sections with uniform diameters are soaked in environment-friendly anti-corrosion liquid for 24 hours, taken out and naturally dried or dried at a low temperature.
  5. 5. The method for comprehensively utilizing the bamboo reed Quan Zhuduo degrees according to claim 1, wherein the extraction condition of the bamboo leaf flavone extract in the step 3 is that 8-10 times of 70% ethanol solution is added into bamboo leaf particles, the reflux extraction is carried out for 2-3 times under the condition of 60-70 ℃ for 2h each time, and the extracting solutions are combined and concentrated to obtain the bamboo leaf flavone extract.
  6. 6. The method for comprehensively utilizing the Quan Zhuduo-dimension of the arundo donax as claimed in claim 1, wherein the processing mode of the fresh and tender bamboo leaves in the step 3 is that the fresh and tender bamboo leaves are soaked in light salt water and then blanched, and the water is drained and then the fresh and tender bamboo leaves are used for food packaging such as rice dumpling wrapping or processing into special food ingredients.
  7. 7. The method for comprehensively utilizing the bamboo shoot Quan Zhuduo degrees according to claim 1, wherein the modification treatment mode of the bamboo shoot sheath particles in the step 4 is that the bamboo shoot sheath particles are soaked in 5% sodium hydroxide solution for 2 hours, taken out, washed to be neutral and dried to prepare an adsorption material, and the preparation raw materials of the degradable packaging material are bamboo shoot sheath powder, starch and polyvinyl alcohol which are crushed to be less than 100 microns.
  8. 8. The method for comprehensively utilizing the natural bamboo reed Quan Zhuduo according to claim 1, wherein the extraction condition of the bamboo root active ingredient extract in the step 5 is that distilled water with the quantity of 6-8 times is added into bamboo root particles, the bamboo root active ingredient extract is obtained by decocting for 2 times at the temperature of 80-90 ℃ for 1.5h each time, and the decoction is combined and concentrated.
  9. 9. The method for achieving the Quan Zhuduo-dimensional comprehensive utilization of the arundo donax as claimed in claim 1, wherein the biogas fermentation in the step 6 is characterized in that activated sludge is added according to 25% of the mass of wastewater, the pH of a fermentation system is adjusted to 6.5, and microbial fermentation is carried out at 50 ℃.

Description

Method for comprehensively utilizing Quan Zhuduo-dimension arundo donax Technical Field The invention relates to the technical field of comprehensive utilization of biomass resources, in particular to a method for achieving Quan Zhuduo-dimension comprehensive utilization of arundo donax. Background Arundo donax is used as a perennial gramineae arundo plant, and becomes a variety with great development potential in the field of biomass resources by virtue of the outstanding growth advantages of the arundo donax. The plant has short growth period, annual average biomass of 20-30 tons/mu, far exceeding grain crops such as wheat, corn and the like, has extremely strong adaptability, can be planted on marginal lands such as saline-alkali lands, river beach lands, abandoned barren lands and the like in a large scale, does not need to occupy cultivated land resources, can effectively plate living idle lands, can realize carbon sink accumulation through photosynthesis, and improves boosting ecological environment. In recent years, along with the promotion of 'double carbon' targets and the landing of policies for recycling biomass resources, the development value of arundo donax is widely focused, and the arundo donax becomes an important renewable raw material for replacing fossil resources and relieving environmental pressure. However, the current Arundo donax resource utilization technology still has a plurality of bottlenecks, and the overall development situation of singleness and coarseness is presented, so that the full release of the resource value is severely restricted. From the application range, the prior art is mostly focused on the development of a single part of the bamboo stalk, and the utilization attention of byproducts such as bamboo leaves, bamboo shells, bamboo roots and the like is extremely low, so that the parts rich in active ingredients and fiber substances are directly discarded, and the resource waste rate is as high as 40% -50%. From the processing mode, most enterprises adopt a rough treatment process, the bamboo stalk is mainly used for direct combustion power generation and traditional pulping, the energy conversion efficiency is less than 30%, pollutants such as dust, harmful gas and the like are easy to generate in the combustion process, a large amount of waste liquid is discharged in the pulping process to cause water pollution, and even if part of technology relates to the field of medicines or materials, the technology is only limited to simple extraction of a single part, and multicomponent synergistic value-added is not realized. From the aspect of industrial chain layout, the existing arundo donax utilization mode has short industrial chain and low added value of products, mainly outputs primary products, lacks deep processing links, and is difficult to form a diversified product system. For example, bamboo stalk pulping only produces basic pulp raw materials, does not extend to the fields of high-end dissolving pulp, biological base materials and the like, and medicinal development only extracts single active ingredients, ignores the synergistic effect of the components and has weak overflow capacity. Meanwhile, the prior art does not construct a full-chain closed-loop utilization system, and byproducts such as waste water, waste residue, extraction residues and the like generated in the processing process lack effective treatment means, so that secondary pollution is caused, and the opportunity for recycling resources is missed. In addition, the prior art has narrow application scenes, is mostly limited to few industries such as energy, paper making and the like, cannot cover a plurality of fields such as medicine, environmental protection, food, agriculture and the like, and is difficult to fully exert the comprehensive resource advantages of the arundo donax. In summary, the current Arundo donax utilization technology has the problems of low resource utilization rate, extensive processing technology, short industrial chain, low added value, serious pollution, limited industrial coverage and the like, and cannot adapt to the development requirement of efficient and cyclic utilization of biomass resources. Therefore, research and development of a comprehensive utilization technology capable of realizing high-efficiency conversion of all parts and all components of arundo donax, covering multi-industry scenes and forming closed loop circulation becomes a key for breaking through industry bottlenecks and pushing large-scale development of arundo donax resources, and has important significance for promoting ecological protection and economic development collaborative co-progress. Disclosure of Invention The invention aims to solve the technical problems of serious resource waste, single utilization mode, limited coverage industry and low added value of products in the existing arundo donax utilization technology, and provides a comprehensive utilization method capable of real