WO2023198227A1 - 生物酶预处理调控麦草废渣颗粒燃料理化性能的方法 - Google Patents

生物酶预处理调控麦草废渣颗粒燃料理化性能的方法 Download PDF

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WO2023198227A1
WO2023198227A1 PCT/CN2023/099078 CN2023099078W WO2023198227A1 WO 2023198227 A1 WO2023198227 A1 WO 2023198227A1 CN 2023099078 W CN2023099078 W CN 2023099078W WO 2023198227 A1 WO2023198227 A1 WO 2023198227A1
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wheat
residue
pretreatment
enzyme
waste
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PCT/CN2023/099078
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English (en)
French (fr)
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陈嘉川
杨桂花
吉兴香
林兆云
王宝斌
薛蓝馨
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齐鲁工业大学(山东省科学院)
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Publication of WO2023198227A1 publication Critical patent/WO2023198227A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/40—Solid fuels essentially based on materials of non-mineral origin
    • C10L5/44—Solid fuels essentially based on materials of non-mineral origin on vegetable substances
    • C10L5/445—Agricultural waste, e.g. corn crops, grass clippings, nut shells or oil pressing residues
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/10—Biofuels, e.g. bio-diesel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

Definitions

  • the invention belongs to the field of bio-based material preparation, and specifically relates to a biological enzyme pretreatment method for regulating the physical and chemical properties of wheat straw waste residue particle fuel.
  • Wheat straw has huge reserves but low utilization rate, so it has huge potential for development and utilization.
  • Wheat straw is one of the fiber raw materials in the pulp and paper industry, but the whole process of wheat straw pulping from material preparation to pulping will produce some waste materials and waste liquid, mainly including wheat straw residue generated in the material preparation section, waste generated in the pretreatment and refining processes. liquid. Solid waste will take up a lot of space after collection, and the waste liquid generated by the pretreatment and pulping process contains a large amount of dissolved organic matter, which has become a pollutant load for pulp and paper enterprises. This part of the material should be fully utilized and processed into biomass.
  • Particle fuel can effectively improve the problems of solid waste accumulation and difficult waste liquid treatment in paper mills. Therefore, how to effectively utilize these waste materials and waste liquids and convert them into high value-added biomass energy products is one of the technical bottlenecks that need to be solved when using grass biomass fiber raw materials for papermaking.
  • the present invention provides a method for preparing pellet fuel by utilizing the solid residue produced by the biochemical mechanical pulping process of wheat straw and the waste liquid of the pulping process through biological enzyme regulation and pretreatment.
  • the wheat residue is first pretreated and regulated with biological enzymes, then mixed with the waste liquid produced in each section of the wheat straw pulping process according to a certain mass ratio, and heated to better bond and shape to obtain pellet fuel.
  • a first aspect of the invention provides a method for treating and regulating the physical and chemical properties of wheat straw waste particle fuel, including:
  • the wheat residue is pretreated with biological enzymes and dried to obtain enzyme-pretreated wheat residue;
  • the enzyme-pretreated wheat residue and pulping waste liquid are mixed evenly, heated and extruded to obtain.
  • the present invention uses biological enzyme pretreatment to regulate the properties of solid waste and waste liquid produced during the chemical mechanical pulping process of wheat straw, and prepares low-cost, environmentally friendly pellet fuel.
  • a second aspect of the present invention provides wheat straw waste particle fuel prepared by any of the above methods.
  • the third aspect of the present invention provides the application of the above-mentioned wheat straw waste particle fuel in the field of clean energy.
  • the pellet fuel of the present invention mainly contains three elements: C, H, and O.
  • the gas generated by combustion is mainly CO 2 and is a clean product.
  • the biological enzyme used in the pretreatment of the present invention is non-toxic, tasteless and environmentally friendly.
  • Figure 1 is a physical picture/sample morphology picture of wheat residue particle fuel prepared in various embodiments and comparative examples of the present invention.
  • One of the purposes of the present invention is to solve the problem of recycling solid waste and waste liquid in the biochemical mechanical pulping process of wheat straw.
  • the second object of the present invention is to provide a method for regulating and improving the performance of wheat residue pellet fuel through biological enzyme pretreatment.
  • the third object of the present invention is to provide a method for preparing pellet fuel using waste materials and waste liquid from the wheat straw pulping process.
  • the present invention provides a method for preparing wheat residue/pulping waste liquid-based particle fuel controlled by biological enzymes, which specifically includes the following steps:
  • the wheat residue produced during the wheat straw preparation process in the factory is pretreated with biological enzymes, then mixed with the pulping waste liquid in a certain proportion, heated and extruded to obtain pellet fuel;
  • the wheat straw waste is wheat residue larger than 60 mesh (0.22mm) after passing through a 60 mesh standard sieve;
  • the enzymes include: lipase, xylanase, and cellulase.
  • the pulping process waste liquid is pulping black liquor.
  • the enzyme pretreatment process is as follows: sieve the wheat residue through a 60-mesh sieve to obtain wheat residue with a particle size greater than 0.22mm, dry it at 105°C for 4 hours for later use; configure a buffer solution with a pH of 5.0, and control
  • the pretreatment temperature is 50°C, add 0.05g (accounting for 0.50wt% of the solid waste content) lipase/xylanase/cellulase treatment, stir for 10 minutes, then add 10g of wheat residue, mix and stir for 6 hours, and the lipase/xylanase/cellulase will be added.
  • the wheat residue treated with xylanase/cellulase was dried in a 60°C oven for later use.
  • the specific preparation steps of the pellet fuel are: adding a certain amount of waste liquid to the above-mentioned enzyme-pretreated wheat residue, mixing and drying, the wheat residue mass proportion is 74.0%, and the waste liquid is 74.0%.
  • the mass proportion of solid matter in the liquid is 24.0%, and the mass proportion of water in the mixture is 2.0%; 1.0g of the mixture is added to the mold sleeve, and compression molding is performed in a hydraulic press at a pressure of 6MPa and a temperature of 100°C. , determine its density, calorific value and mechanical properties.
  • the polysaccharides and lignin contained in the pulping waste liquid have certain binding properties and can be used as binders and can improve combustion performance.
  • the pellet fuel is compression molded by a hydraulic press.
  • the black liquor in the following examples and comparative examples is pulping black liquor taken from a paper mill.
  • Preparation and performance measurement of pellet fuel Dry wheat residue with a particle size of less than 0.22mm through a 60-mesh sieve at 105°C for 4 hours; then add 10.0wt% deionized water and mix evenly; then take 1.0g and mix thoroughly Put the uniform wheat slag into the mold sleeve, and set the hydraulic press pressure to 6MP under normal temperature conditions. Compression molding. Its density was measured, the calorific value of the biomass pellet fuel was measured by a calorimeter, and its transverse compressive strength was measured by a universal testing machine.
  • pellet fuel Dry wheat residue with a particle size greater than 0.22mm intercepted by a 60-mesh sieve at 105°C for 4 hours; then add 10.0wt% deionized water and mix evenly; then take 1.0g and mix thoroughly
  • the uniform wheat slag is put into the mold sleeve and compressed under the conditions of a hydraulic press of 6MPa and normal temperature.
  • the density was measured, the calorific value of the pellet fuel was determined by a calorimeter, and its transverse compressive strength was measured by a universal testing machine.
  • Preparation and performance measurement of pellet fuel Dry the wheat residue with a particle size greater than 0.22mm that has not passed the 60 mesh sieve at 105°C for 4 hours; then add a certain amount of black liquor, mix and dry so that the quality of the wheat residue accounts for
  • the ratio of solid matter in the waste liquid is 24.0%, and the mass proportion of water in the mixture is 2.0%; take 1.0g of the dried wheat residue/waste liquid mixture and put it into the mold sleeve, and place it in the hydraulic press Compression molding at a pressure of 6MPa and normal temperature.
  • the density was measured, the calorific value of the pellet fuel was determined by a calorimeter, and its transverse compressive strength was measured by a universal testing machine.
  • Bioenzyme treatment process of granular fuel dry wheat residue with a particle size greater than 0.22mm trapped in a 60 mesh sieve for 4 hours at 105°C for later use; configure a buffer solution with a pH of 5.0, and control the pretreatment temperature to 50°C.
  • Granular fuel enzyme treatment process dry the wheat residue with a particle size greater than 0.22mm that has not passed the 60 mesh sieve at 105°C for 4 hours for later use; configure a buffer solution with a pH of 5.0, control the pretreatment temperature to 50°C, and add Treat 0.05g (accounting for 0.50% of the solid waste content) with lipase, stir for 10 minutes, then add 10g of wheat residue, mix and stir for 6 hours, put the lipase-treated wheat residue into a 60°C oven to dry for later use.
  • Granular fuel enzyme treatment process dry the wheat residue with a particle size greater than 0.22mm that has not passed the 60-mesh sieve at 105°C for 4 hours for later use; configure a buffer solution with a pH of 5.0, and control the water bath temperature to 50°C. Add 0.05g (accounting for 0.50% of the solid waste content) cellulase treatment, stir for 10 minutes, then add 10g of wheat residue, mix and stir for 6 hours, put the cellulase-treated wheat residue into a 60°C oven to dry for later use.
  • Granular fuel enzyme treatment process dry the wheat residue with a particle size greater than 0.22mm that has not passed the 60 mesh sieve at 105°C for 4 hours for later use; configure a buffer solution with a pH of 5.0, control the pretreatment temperature to 50°C, and add Treat 0.05g (accounting for 0.50% of solid waste content) xylanase/cellulase, stir for 10 minutes, then add 10g wheat residue, mix and stir for 6h, put the wheat residue treated by xylanase/cellulase into 60 °C oven drying.
  • Granular fuel enzyme treatment process dry the wheat residue with a particle size greater than 0.22mm that has not passed the 60 mesh sieve at 105°C for 4 hours for later use; configure a buffer solution with a pH of 5.0, control the pretreatment temperature to 50°C, and add Treat 0.05g (accounting for 0.50% of the solid waste content) lipase/xylanase/cellulase, stir for 10 minutes, then add 10g of wheat residue, mix and stir for 6 hours, the lipase/xylanase/cellulase treatment will The wheat residue is dried in a 60°C oven for later use.
  • the test method is: the cellulose, hemicellulose and acid-insoluble lignin content in wheat straw waste residue is measured according to the NREL method, the elemental composition analysis is measured using an automatic element analyzer, and the lignin content in the pulping waste liquid is measured using a UV spectrophotometer. The absorbance was calculated, and the sugar component content was measured using an ICS5000+ ion chromatograph. The test results are shown in Tables 1 and 2.

Abstract

本发明涉及生物酶预处理调控麦草废渣颗粒燃料理化性能的方法，属于生物基材料制备领域。所述的制备方法包括：将麦渣进行生物酶预处理，干燥，得到酶预处理后的麦渣；将所述酶预处理后的麦渣与制浆废液混合均匀，加热并挤压成型，即得。本发明的制备方法简单、操作方便、实用性强、环保性强，可改善麦渣基颗粒燃料的理化性能，解决目前制浆过程中存在的固废和废液难高值化利用问题。

Description

生物酶预处理调控麦草废渣颗粒燃料理化性能的方法
本申请要求于2022年04月11日提交中国专利局、申请号为CN202210373029.9、发明名称为“生物酶预处理调控麦草废渣颗粒燃料理化性能的方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明属于生物基材料制备领域，具体涉及一种生物酶预处理调控麦草废渣颗粒燃料理化性能的方法。
背景技术
在全球能源转型的关键时刻，农业废弃物纤维原料作为一种可持续的绿色清洁能源已成为研究者们关注的焦点。麦草储量巨大，但利用率低，其具有巨大的开发利用潜能。麦草是制浆造纸工业的纤维原料之一，但麦草制浆从备料到成浆全过程中会产生部分废料和废液，主要包括备料工段产生的麦草废渣、预处理和磨浆过程产生的废液。固体废渣收集后会占用大量空间，而预处理和制浆过程产生的废液中含有大量溶解有机物，这些均成为制浆造纸企业的污染物负荷，将该部分材料充分利用并加工制备成生物质颗粒燃料可有效改善纸厂的固废堆积和废液难处理的问题。因此，如何有效利用这些废料和废液，使其转化为高附加值的生物质能源产品是目前草类生物质纤维原料用于造纸需要解决的技术瓶颈问题之一。
发明内容
解决上述问题，本发明提供了一种生物酶调控预处理的利用麦草生物化学机械制浆过程产生的固体残渣和制浆过程废液制备颗粒燃料的方法。将麦渣首先用生物酶进行预处理调控，然后与麦草制浆过程中各工段产生的废液按照一定质量比混合，通过加热使其更好地粘结成型得到颗粒燃料。
为实现上述技术目的，本发明采用如下技术方案：
本发明的第一个方面，提供了一种处理调控麦草废渣颗粒燃料理化性能的方法，包括：
将麦渣进行生物酶预处理，干燥，得到酶预处理后的麦渣；
将所述酶预处理后的麦渣与制浆废液混合均匀，加热并挤压成型，即得。
本发明利用生物酶预处理调控麦草化学机械制浆过程中产生的固体废料和废液性能，制备出了价格低廉、环境友好的颗粒燃料。
本发明的第二个方面，提供了任一上述的方法制备的麦草废渣颗粒燃料。
本发明的第三个方面，提供了上述的麦草废渣颗粒燃料在清洁能源领域中的应用。
本发明的有益效果在于：
(1)本发明所用麦草生物化学机械制浆过程中产生的固废物麦渣和废液具有废物高附加值利用的优点。
(2)本发明的颗粒燃料主要包含C、H、O三种元素，燃烧产生的气体以CO2为主，是一种清洁产品。
(3)本发明预处理所用生物酶对无毒无味对环境友好。
(4)本发明制备方法简单、实用性强，具有较好的经济和环境效益。
附图说明
构成本发明的一部分的说明书附图用来提供对本发明的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。
图1是本发明各实施例和对比例制备的麦渣颗粒燃料实物图/样品形貌图。
具体实施方式
应该指出，以下详细说明都是示例性的，旨在对本发明提供进一步的说明。除非另有指明，本发明使用的所有技术和科学术语具有与本发明所属技术领域的普通技术人员通常理解的相同含义。
本发明的目的之一是解决麦草生物化学机械制浆过程中固废和废液的回收利用问题。
本发明的目的之二是提供生物酶预处理调控改善麦渣颗粒燃料性能的方法。
本发明的目的之三是提供利用麦草制浆过程废料和废液制备颗粒燃料的方法。
为此，本发明提供了一种生物酶调控的麦渣/制浆废液基颗粒燃料的制备方法，具体包括如下步骤：
将工厂麦草备料过程产生的麦渣进行生物酶预处理，然后与制浆废液按照一定比例搅拌混合均匀，加热并挤压成型得到颗粒燃料；
在一些实施例中，所述的麦草废料为过60目标准筛后大于60目(0.22mm)的麦渣；
在一些实施例中，所述的酶包括：脂肪酶、木聚糖酶和纤维素酶。
在一些实施例中，所述的制浆过程废液为制浆黑液。
在一些实施例中，酶预处理过程为：将麦渣筛分过60目筛得到粒径大于0.22mm的麦渣，在105℃条件下烘干4h备用；配置pH为5.0的缓冲溶液，控制预处理温度为50℃，加入0.05g(占固废含量的0.50wt％)脂肪酶/木聚糖酶/纤维素酶处理，搅拌10min，然后加入10g麦渣混合搅拌6h，将经过脂肪酶/木聚糖酶/纤维素酶处理的麦渣放入60℃烘箱烘干备用。
在一些实施例中，所述的颗粒燃料的具体制备步骤为：向上述酶预处理后的麦渣中加入一定量的废液混匀并烘干处理，麦渣质量占比为74.0％，废液中固形物质量占比为24.0％，混合物中水质量占比为2.0％；取该混合物1.0g加入到成型模具套筒内，压力为6MPa、温度为100℃的条件下在液压机中压缩成型，测定其密度，热值以及机械性能。其中制浆废液所含聚糖和木素均具有一定的粘结性能可作为粘结剂使用，并可提高燃烧性能。
在一些实施例中，颗粒燃料通过液压机压缩成型。
下面结合具体的实施例，对本发明做进一步的详细说明，应该指出，所述具体实施例是对本发明的解释而不是限定。
以下实施例和对比例中的黑液均为取自某造纸厂的制浆黑液。
对比例1
颗粒燃料的制备以及性能测定：将通过60目筛的粒径小于0.22mm的麦渣在105℃条件下烘干4h；然后加入10.0wt％的去离子水混合搅拌均匀；然后取1.0g充分混匀的麦渣放入成型模具套筒内，在液压机压力为6MP常温条件 下压缩成型。测定其密度，并通过量热仪测定生物质颗粒燃料的热值，通过万能试验机测定其横向抗压强度。
对比例2
颗粒燃料的制备以及性能测定：将60目筛截留的粒径大于0.22mm的麦渣在105℃条件下烘干4h；然后加入10.0wt％的去离子水混合搅拌均匀；然后取1.0g充分混匀的麦渣放入成型模具套筒内，在液压机压力为6MPa、常温条件下压缩成型。测定其密度，并通过量热仪测定颗粒燃料的热值，通过万能试验机测定其横向抗压强度。
对比例3
颗粒燃料的制备以及性能测定：将未通过60目筛的粒径大于0.22mm的麦渣在105℃条件下烘干4h；然后加入一定量的黑液混匀并烘干处理使麦渣质量占比为74.0％，废液中固形物质量占比为24.0％，混合物中水质量占比为2.0％；取1.0g烘干后的麦渣/废液混合物放入成型模具套筒内，在液压机压力为6MPa、常温条件下压缩成型。测定其密度，并通过量热仪测定颗粒燃料的热值，通过万能试验机测定其横向抗压强度。
实施例1
1)颗粒燃料生物酶处理过程：将截留在60目筛的粒径大于0.22mm的麦渣在105℃条件下烘干4h备用；配置pH为5.0的缓冲溶液，控制预处理温度为50℃，加入0.05g(占固废含量的0.50％)木聚糖酶处理，搅拌10min，然后加入10g麦渣混合搅拌6h，将经过木聚糖酶预处理的麦渣用放入60℃烘箱烘干备用。
2)颗粒燃料的制备以及性能测定：向上述经过木聚糖酶处理的麦渣中加入一定量的黑液混匀并烘干处理，其中麦渣质量占比为74.0％，废液中固形物质量占比为24.0％，混合物中水质量占比为2.0％；取1.0g烘干后的麦渣/废液混合物放入成型模具套筒内，在液压机压力为6MPa、温度为100℃条件下压缩成型。测定颗粒燃料的密度，通过量热仪测定颗粒燃料的热值，通过万能试验机测定其横向抗压强度。
实施例2
1)颗粒燃料酶处理过程：将未通过60目筛的粒径大于0.22mm的麦渣在105℃条件下烘干4h备用；配置pH为5.0的缓冲溶液，控制预处理温度为50℃，加入0.05g(占固废含量的0.50％)脂肪酶处理，搅拌10min，然后加入10g麦渣混合搅拌6h，将经过脂肪酶处理的麦渣放入60℃烘箱烘干备用。
2)颗粒燃料的制备以及性能测定：向上述经过脂肪酶处理的麦渣中加入一定量的黑液混匀并烘干处理，其中麦渣质量占比为74.0％，废液中固形物质量占比为24.0％，混合物中水质量占比为2.0％；取1.0g烘干后的麦渣/废液混合物放入成型模具套筒内，在液压机压力为6MPa、温度为100℃条件下压缩成型。测定颗粒燃料的密度，通过量热仪测定颗粒燃料的热值，通过万能试验机测定其横向抗压强度。
实施例3
1)颗粒燃料酶处理过程：将未通过60目筛的粒径大于0.22mm的麦渣，在105℃条件下烘干4h备用；配置pH为5.0的缓冲溶液，控制水浴锅温度为50℃，加入0.05g(占固废含量的0.50％)纤维素酶处理，搅拌10min，然后加入10g麦渣混合搅拌6h，将经过纤维素酶处理的麦渣放入60℃烘箱烘干备用。
2)颗粒燃料的制备以及性能测定：向上述经过纤维素酶处理的麦渣中加入一定量的黑液混匀并烘干处理，使麦渣质量占比为74.0％，废液中固形物质量占比为24.0％，混合物中水质量占比为2.0％；取1.0g烘干后的麦渣/废液混合物放入成型模具套筒内，在液压机压力为6MPa、温度为100℃条件下压缩成型。测定颗粒燃料的密度，通过量热仪测定颗粒燃料的热值，通过万能试验机测定其横向抗压强度。
实施例4
1)颗粒燃料酶处理过程：将未通过60目筛的粒径大于0.22mm的麦渣在105℃条件下烘干4h备用；配置pH为5.0的缓冲溶液，控制预处理温度为50℃，加入0.05g(占固废含量的0.50％)木聚糖酶/纤维素酶处理，搅拌10min，然后加入10g麦渣混合搅拌6h，将经过木聚糖酶/纤维素酶处理的麦渣放入60℃烘箱烘干备用。
2)颗粒燃料的制备以及性能测定：向上述经过木聚糖酶/纤维素酶处理的麦渣中加入一定量的黑液混匀并烘干处理，使麦渣质量占比为74.0％，废 液中固形物质量占比为24.0％，混合物中水质量占比为2.0％；取烘干后的麦渣/废液混合物1.0g放入成型模具套筒内，在液压机压力为6MPa、温度为100℃条件下压缩成型。测定颗粒燃料的密度，通过量热仪测定颗粒燃料的热值，通过万能试验机测定其横向抗压强度。
实施例5
1)颗粒燃料酶处理过程：将未通过60目筛的粒径大于0.22mm的麦渣在105℃条件下烘干4h备用；配置pH为5.0的缓冲溶液，控制预处理温度为50℃，加入0.05g(占固废含量的0.50％)脂肪酶/木聚糖酶/纤维素酶处理，搅拌10min，然后加入10g麦渣混合搅拌6h，将经过脂肪酶/木聚糖酶/纤维素酶处理的麦渣放入60℃烘箱烘干备用。
2)颗粒燃料的制备以及性能测定：向上述木脂肪酶/木聚糖酶/纤维素酶处理后的麦渣中加入一定量的黑液混匀并烘干处理，使麦渣质量占比为74.0％，废液中固形物质量占比为24.0％，混合物中水质量占比为2.0％；取1.0g烘干后的麦渣/废液混合物放入成型模具套筒内，在液压机压力为6MPa、温度为100℃条件下压缩成型。测定颗粒燃料的密度，通过量热仪测定颗粒燃料的热值，通过万能试验机测定其横向抗压强度。
原料分析：
测试方法为：麦草废渣中纤维素、半纤维素、酸不溶木素含量按照NREL法进行测定，元素组成分析采用自动元素分析仪进行测定，制浆废液中木素含量采用紫外分光光度计测定吸光度进行计算，糖组分含量采用ICS5000+离子色谱仪进行测定，测试结果如表1和表2所示。
表1麦草备料废渣化学组分及元素组成分析(％)
表2黑液成分及含量分析

表3生物质颗粒燃料的理化性能分析
最后应该说明的是，以上所述仅为本发明的优选实施例而已，并不用于限制本发明，尽管参照前述实施例对本发明进行了详细的说明，对于本领域的技术人员来说，其依然可以对前述实施例所记载的技术方案进行修改，或者对其中部分进行等同替换。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (14)

  1. 一种生物酶预处理调控麦草废渣颗粒燃料理化性能的方法，包括：
    将麦渣进行生物酶预处理，干燥，得到酶预处理后的麦渣；
    将所述酶预处理后的麦渣与制浆废液混合均匀，加热并挤压成型，得到麦草废渣颗粒燃料。
  2. 根据权利要求1所述的方法，其特征在于，所述生物酶预处理包括以下步骤：
    将麦渣烘干备用；
    向缓冲溶液中加入酶后，加入所述烘干的麦渣混合搅拌，得到酶处理的麦渣。
  3. 根据权利要求1或2所述的方法，其特征在于，所述生物酶预处理采用的酶为脂肪酶、木聚糖酶或纤维素酶中的至少一种。
  4. 根据权利要求3所述的方法，其特征在于，所述生物酶预处理采用的酶为脂肪酶、木聚糖酶和纤维素酶。
  5. 根据权利要求1或2所述的方法，其特征在于，所述生物酶预处理采用的条件为：预处理温度50～60℃，预处理缓冲溶液pH为5.0～5.5，预处理时间6～8h。
  6. 根据权利要求1或2所述的方法，其特征在于，生物酶的质量为麦渣质量的0.50～0.80wt％。
  7. 根据权利要求1或2所述的方法，其特征在于，所述麦渣的粒径大于0.22mm。
  8. 根据权利要求2所述的方法，其特征在于，所述生物酶预处理包括以下步骤：
    将麦渣筛分过60目筛得到粒径大于0.22mm的麦渣，在105℃条件下烘干4h备用；
    配置pH为5.0的缓冲溶液，控制预处理温度为50℃，加入占固废含量的0.50wt％的生物酶，搅拌10min，然后加入麦渣混合搅拌6h。
  9. 根据权利要求1所述的方法，其特征在于，所述制浆废液为制浆黑液。
  10. 根据权利要求1所述的方法，其特征在于，所述酶预处理后的麦渣 与制浆废液的混合物中，酶预处理后的麦渣质量占比为72.0～74.0％，制浆废液中固形物质量占比为24.0～26.0％，水质量占比为2.0～3.0％，三者百分比之和为100％。
  11. 根据权利要求1所述的方法，其特征在于，加热并挤压成型的具体条件为：压力为6～8MPa、温度为100～120℃。
  12. 根据权利要求1所述的方法，其特征在于，所述干燥的温度为60～65℃。
  13. 权利要求1～12任一项所述的方法得到的麦草废渣颗粒燃料。
  14. 权利要求13所述的麦草废渣颗粒燃料在清洁能源领域中的应用。
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