CN1858043A - Method for producing furol by extruding plant stalk - Google Patents

Method for producing furol by extruding plant stalk Download PDF

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CN1858043A
CN1858043A CN 200610044395 CN200610044395A CN1858043A CN 1858043 A CN1858043 A CN 1858043A CN 200610044395 CN200610044395 CN 200610044395 CN 200610044395 A CN200610044395 A CN 200610044395A CN 1858043 A CN1858043 A CN 1858043A
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furol
hydrolysis
furfural
plant
acid
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CN 200610044395
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Chinese (zh)
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CN100506812C (en )
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高绍丰
魏丙栋
索炫伟
孟凡超
刘军伟
江成真
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济南圣泉集团股份有限公司
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Abstract

The plant stalk extruding process for producing furol belongs to the field of furol preparing technology. The process includes the following steps: 1. cutting plant stalk into 2-4 cm long segments; 2. mixing plant stalk segments with acid in a acid mixer, extruding in a screw extruding feeder, feeding into hydrolysis caldron, introducing water vapor for hydrolysis to obtain raw furol liquor, and returning the extruded dilute acid to the acid mixer; and 3. leading the raw furol liquor to the primary distillation tower to obtain raw furol and refining in a furol refining apparatus to obtain furol product. The production process is stable, reliable, low in production cost, high in furol yield and high in furol quality.

Description

一种利用植物秸秆挤压制取糠醛的方法 A method for preparing a plant stalk extrusion using furfural

技术领域 FIELD

本发明涉及糠醛的制备领域,尤其是利用植物秸秆挤压制取糠醛的方法。 The present invention relates to the field of preparation of furfural, especially the use of plant stalks Methods Extruded furfural.

背景技术 Background technique

糠醛是至今未能用化工原料合成而只能用农业废弃物等植物原料提取的一种有机化工产品。 Furfural is so far failed to use synthetic chemicals and raw materials such as agricultural wastes can only be extracted with an organic plant material of chemical products. 糠醛是一种优良的选择性溶剂,也是生产各种呋喃类化合物的原料。 Furfural is a good selective solvent, but also the production of various raw material furans. 其在铸造用粘结剂、四氢呋喃、润滑油精制、有机合成、塑料、医药、化工防腐等方面都有广泛的用途。 Which has wide application in the foundry binder, tetrahydrofuran, refined lubricating oil, organic synthesis, plastics, pharmaceuticals, chemical corrosion and the like.

糠醛在世界上早已形成工业化大生产,生产工艺方法有多种,但大都采用直接法。 Furfural has been formed in the world industrial production, there are several methods of production processes, but mostly using the direct method. 直接法是把含有聚戊糖原料放入一水解釜中,在催化剂-硫酸和热的作用下,使聚戊糖水解成戊糖,同时戊糖又被脱水形成糠醛,然后经过提取粗醛、毛醛连续精制最终得成品糠醛。 The direct method comprising pentosan hydrolysis raw materials into a vessel, a catalyst - sulfuric acid under heat and the polyethylene solution into the pentose sugar pentyl, while dehydration of pentoses and furfural is then subjected to extraction the crude aldehyde, Mao finished finally obtained purified aldehyde continuous furfural.

提取糠醛的原料有很多种,从理论上讲凡聚戊糖含量较高的原料,如:玉米芯、玉米秸秆、葵花籽壳、棉秆、麦秆、棉籽壳、甘蔗渣、稻壳、阔叶材等都可以提取糠醛。 There are many materials furfural extraction, where theoretically high pentosan content of the feedstock, such as: corn cobs, corn stover, sunflower seed shells, cotton stalk, wheat straw, cotton seed hulls, bagasse, rice hulls, wide leaf material and so can be extracted furfural. 但由于水解阶段存在着特殊的工艺困难,使得目前糠醛的工业化生产中使用的原料大多以颗粒状原料或易粉碎的原料为主,国内主要以玉米芯为主。 However, due to the presence of a special stage hydrolysis process is difficult, so that the current industrial production of furfural, a raw material used mostly granular or friable raw materials, mainly domestic corn-based core. 而对于其他含聚戊糖的植物秸秆来说纤维长、不易粉碎、储存困难且堆积密度小,类似草质结构的植物秸秆原料尚未有稳定实用的工业化生产方法。 For other pentosan-containing plant straw of fiber length is not easy pulverization difficult and storing bulk density, herbaceous plant stalk material similar structure yet stable and practical industrial production method. 这种客观情况,一方面,使得原料短缺成为制约糠醛生产发展的重要因素。 This objective situation, on the one hand, making the shortage of raw materials has become an important factor restricting the development of production of furfural. 另一方面,类似草质结构的植物秸秆原料被大量浪费,甚至产生环境污染。 On the other hand, similar to the configuration of herbaceous plant stalks are a lot of waste material, and even environmental pollution. 以玉米秸秆为例在华东地区玉米秸秆的收割非常集中,农户为了及时种上小麦一般在收获玉米后2~3天内将田地里的玉米秸秆从地里清除,而现在没有专门存放秸秆的场地植物秸秆利用较低一般家庭也不把秸秆作为燃料燃烧。 For example corn stover harvest corn stover very concentrated in eastern China, in order to promptly farmers planted wheat usually 2 to 3 days, the fields of corn stalks removed from the ground after harvesting corn, but now there is no specific storage yard plant straw straw with lower average family nor the straw burned as fuel. 因此大部分农户都在地里将秸秆就地燃烧,每到农忙季节田地里、道路周围到处“硝烟弥漫”给环境造成污染并且影响车辆的交通及飞机的起飞和降落。 Therefore, most farmers are burning the straw in place in the ground, every busy season fields, surrounding roads everywhere "smoke" pollute the environment and affect the traffic of vehicles and aircraft takeoff and landing. 其他植物秸秆如:麦秆等草质秸秆也是如此。 Other plants, such as straw: Straw and other herbaceous stalks as well.

提取糠醛的水解工艺阶段主要分为四道工序,即原料粉碎、输送、拌酸、水解。 Furfural extraction stage hydrolysis process is divided into four processes, i.e., material is comminuted, conveyed, mixed acid hydrolysis. 用植物秸秆为原料制取糠醛在水解阶段的四道工序中,存在的主要工艺困难有以下几点。 Furfural plants straw as raw material in the hydrolysis step of stage four, the main difficulty of the process are as follows. 一是植物秸秆的切割、粉碎,由于植物秸秆纤维长、质地柔软,无法直接粉碎或挤压,必须先用切草机进行切割后再进行粉碎或挤压,并且在粉碎时必须控制植物秸秆的水分不能太大否则会影响粉碎效果从而影响后续工序。 First, the plant straw cutting, crushing, grinding or extrusion plant as a result of long straw fiber, soft, can not be directly crushed or squeezed, it must first cut with the grass cutting machine and then, and must be controlled at the time of crushing plant straw water can not be too large otherwise it will affect the crushing effect which affects the subsequent step. 二是植物秸秆的储存,每生产一吨糠醛约需16~22吨的植物秸秆,如此大的储存量需要非常大的场地并且由于透气性较好经过雨淋后不会像玉米芯那样只表面一层发霉,植物秸秆由于可燃性较好如此大的植物秸秆堆场给场地防火带来很大压力。 Second storage plant straw, for every ton of furfural takes about 16 to 22 tons plant stalks, such a large amount of storage space and require very large due to the good permeability after rain not only the surface image as corncob a layer of mildew, plant stalks so much better due to the flammability of plant straw yard field fire to bring a lot of pressure. 三是粉碎后的植物秸秆堆积密度小约95~105kg/m3,同体积的水解釜所装原材料量少设备利用率低,从而导致蒸汽消耗高使糠醛生产成本大幅度提高。 Third, the pulverized plant straw bulk density of less than about 95 ~ 105kg / m3, the same equipment using less material is low hydrolysis reactor loaded volume, resulting in higher steam consumption furfural production costs increase greatly. 四是由于植物秸秆密度小在水解釜内容易随蒸汽带入管道及下道工序,从而堵塞管道和影响下道工序的操作很难在工业化装置中生产。 Four is difficult to produce in industrial apparatus since the plant stalks low density easily with the steam into the pipe and the next step of the hydrolysis tank content, thus blocking the operation procedure of the pipeline and affect.

发明内容 SUMMARY

本发明的目的在于提供一种利用植物秸秆挤压制取糠醛的方法,该方法解决了用植物秸秆直接粉碎生产糠醛时存在的以上四个难题,同时解决部分地区由于燃烧植物秸秆造成的大气污染问题。 Object of the present invention is to provide a method for preparing a plant stalk extrusion using furfural, which solves the problem of the presence of the above four direct pulverization with furfural production plant stalks, while addressing parts of atmospheric pollution caused by the burning of plant stalks problem.

本发明的技术方案是:该种利用植物秸秆挤压造粒制取糠醛的方法,包括植物秸秆的切断、挤压打包、输送、混酸、挤压装锅、水解、蒸馏,其特征在于:1)、将整颗植物秸秆用切草机切割成2~4cm的颗粒段,然后用打包机压缩打捆后进行储存;2)、将拆捆后的植物秸秆颗粒段用混酸机混酸后再用螺旋挤压给料器连续的根据1∶0.3~0.8的固液比、按1∶2~1∶8的压缩比将植物秸秆挤压后装入水解釜中,挤压出来的稀酸重新返回到混酸机中进行混酸;在水解釜内通入压力为0.45~0.75MPa的水蒸气,保持水解温度为145~180℃,水解周期为1.5~4小时,挤压后植物秸秆的堆积密度约260~350kg/m3;3)、将水解过程中得到的糠醛原液引入后续工序,经初馏塔提取毛醛后在糠醛连续精制设备内精制最终得商品糠醛。 Aspect of the present invention is: a method of granulating the kind of furfural using extrusion plant straw, including straw of a plant cutting, pressing packing, transport, mixed acid, for pressing a pot, hydrolysis, distillation, characterized in that: 1 ), the whole plant straw pieces with a turf cutter segment 2 ~ 4cm cut into pellets, followed by bundling with strapping storage after compression; 2), the period after the plant straw bale particles with mixed acid and then with a mixed acid machine dilute to a continuous screw extruder feeder according 1:0.3 liquid ratio to 0.8, according to the compression ratio of 1/2 to 1:8 after extrusion plant straw hydrolysis kettle was charged, return to squeeze out machine proceeds to the mixed acid mixed acid; in the hydrolysis reactor is introduced into the water vapor pressure 0.45 ~ 0.75MPa, the hydrolysis temperature is maintained 145 ~ 180 ℃, hydrolysis period is 1.5 to 4 hours, after extrusion plant straw bulk density of about 260 ~ 350kg / m3; 3), obtained in the hydrolysis of furfural liquid is introduced subsequent step, after wool and finally obtained purified aldehyde product of furfural in a continuous furfural refining apparatus Tati early run.

本发明的技术效果是:本发明与现有玉米芯糠醛生产技术相比其特点、优点及积极效果主要体现在以下几方面。 Technical effects of the invention are: The invention compared to prior art production corncob furfural its features, advantages and positive effects mainly in the following aspects.

一是使生产稳定可靠,能够连续操作运行,适合于工业化生产。 First, the production is stable and reliable, can operate continuously running, suitable for industrial production.

二是改进了制浆造纸行业连蒸系统使用的螺旋给料器,使之更适用于植物秸秆的挤压给料,并且能够使物料混酸均匀一致更利于原料的水解,提高糠醛得率。 Second, the pulp and paper industry to improve the continuous cooking system uses a screw feeder, to make it more suitable for extrusion plant straw feed, and the material can be made more uniform mixed acid hydrolyze the raw material, to improve the yield of furfural.

三是用优选了适合于植物秸秆颗粒的水解工艺条件,扩大了糠醛生产原料范围,降低了糠醛生产成本,提高了糠醛得率,保证了糠醛质量。 Third, with the preferred hydrolysis conditions suitable for plant straw particles, expand the range of raw materials furfural, furfural reduce production cost and improve the yield of furfural, furfural to ensure the quality.

四是植物秸秆价格便宜,并且能多产生近75%的糠醛渣,用植物秸秆渣烧锅炉发电比单纯用玉米芯渣烧锅炉发电可多产生近四分之三的蒸汽及电力并可多节约30~35%左右的煤。 Fourth, plant stalks cheap, and can produce more than nearly 75% of furfural slag, slag straw-fired boiler plant with electricity generation than simply using corn cob residue Boiler power can produce more than nearly three-quarters of steam and electricity can save more than about 30 to 35% of the coal. 能够综合利用植物秸秆,清洁生产,对国民经济所作出的贡献是巨大的。 Can plant straw comprehensive utilization, clean production, made contributions to the national economy is enormous.

五是随着农村经济水平的提高植物秸秆不再作为燃料进行燃烧而是在田地里就地燃烧或堆放在野外烂掉,不仅造成大量污染而且在干燥天气给防火带来很大的压力。 Fifth, as the economy in rural areas to improve the level of plant straw as fuel but no longer in situ combustion or stacked in the field to rot in the fields, not only cause a lot of pollution and bring a lot of pressure to fire in dry weather. 本发明的实现可解决废弃物的环保问题,变废为宝,提供了一种现实途径,并使大量植物秸秆得以综合利用取得经济效益增加农民收入。 Implementation of the invention can solve the environmental problem of waste, turning waste into treasure, provides a realistic way, and comprehensive utilization of large amounts of plant stalks to achieve economies increase their income.

具体实施方式 detailed description

以下给出几个实施例,对本发明予以详细叙述。 Several embodiments given below, the present invention is to be described in detail.

本发明螺旋挤压给料器采用制浆造纸行业连蒸系统中使用的螺旋给料器,并对其结构及操作参数进行改动使之更能适合于植物秸秆颗粒。 The present invention using feeder screw extruder paper industry for continuous cooking system used a screw feeder, and changes in its operating parameters of the structure and make it more suitable for plant straw particles. 改动后的螺旋进料器由进料螺旋、锥形壳体和料塞管等部件组成,它的作用是连续均匀的送料,并挤压出多余的稀酸,使得原料逐步压缩成密实的料塞而进入水解锅中,从而增加原料的堆积密度。 After the screw feeder changes from the feed screw, the conical plug housing and feed tube components, its function is continuous and uniform feeding and pressing out excess dilute acid, such that feedstock is progressively compressed into a compact material hydrolysis of the plug into the pot, thereby increasing the bulk density of the feedstock. 料塞管的长度和压缩比是该螺旋进料器的重要参数,一般要根据不同的原料通过实验来确定,料塞管的长度一般在5~15cm,压缩段较长的螺旋适应性较强。 Length compression ratio and feed tube plug screw feeder is the important parameter to be determined generally depending on the feedstock through experiments, the length of the feed tube plug generally 5 ~ 15cm, the longer segment helical compression adaptability . 压缩比的选择主要根据原料的自然堆积密度和可压缩性(即物料密度的变化率)。 The choice of compression ratio in the main natural packing density and compressibility of the raw material (i.e., rate of change of density of the material). 对于植物秸秆来说压缩比一般采用1∶2~1∶8。 For plant stalk it is generally used for the compression ratio of 1/2 to 1:8. 其余设备同现有技术。 The remaining equipment with the prior art.

实施例1: Example 1:

原料使用春天风干后的玉米芯,其水含量为23%。 Raw material corncob spring after air drying, a water content of 23%. 玉米芯经过振动筛除尘后用锤式粉碎机粉碎成1~1.5cm的玉米芯颗粒,然后由提升机输送到拌酸车中进行拌酸,酸浓在5~10%,用酸量保持在以特定的固液比上,经过皮带输送机送入水解釜中,水解釜容积为10立方米,玉米芯装填密度为150~180kg/m3,采用双釜串联操作,装满水解釜后通入压力为0.45~0.75MPa的水蒸汽,水解温度为145~180℃,水解2小时到4小时。 After corncob dust after shaker with a hammer mill into particles of corn cob ~ 1.5cm, and then transported by the elevator car to be mixed with the acid mix acid, acid concentration of 5 to 10%, the amount of acid is maintained at in a particular solid-liquid ratio, through the conveyor belt into the hydrolysis reactor, the hydrolysis reactor volume is 10 cubic meters, corn cob loading density of 150 ~ 180kg / m3, dual series reactor operation, after filling into the hydrolysis reactor water vapor pressure 0.45 ~ 0.75MPa, the hydrolysis temperature is 145 ~ 180 ℃, hydrolysis of from 2 hours to 4 hours. 将水解得到的糠醛原液引入后续工序,经过提取毛醛,毛醛连续精制得商品糠醛。 The hydrolysis of furfural liquid is introduced subsequent step, after extraction aldehyde hair, wool continuously refined aldehyde product furfural. 糠醛质量检测指标详见表1。 Furfural quality testing indicators shown in Table 1. 本例糠醛得率为9~10%,各项单耗详见表2。 This embodiment of furfural yield of 9% to 10%, the consumption in Table 2.

实施例2:原料使用经切割、粉碎、造粒后的玉米秸秆颗粒,其颗粒水含量为27%。 Example 2: starting material by cutting, crushing, corn stover granulated particles, which particles are water content of 27%. 由提升机输送到拌酸车中进行拌酸,酸浓在5~20%,用酸量保持在以特定的固液比上,经过皮带输送机送入水解釜中,水解釜容积为10立方米,采用双釜串联操作,玉米秸秆颗粒的装填密度在300~420kg/m3,装满水解釜后通入压力为0.45~0.75MPa的水蒸汽,水解温度为145~180℃,水解2小时到4小时。 Elevating conveyor to mix the acid car be mixed with the acid, acid concentration of 5 to 20% retained on a particular solid-liquid ratio with the amount of acid fed to the conveyor belt after the hydrolysis reactor, the hydrolysis reactor volume is 10 cubic meters meters, double series reactor operation, the packing density of particles in the corn stover 300 ~ 420kg / m3, the hydrolysis reactor filled into water vapor pressure 0.45 ~ 0.75MPa, the hydrolysis temperature is 145 ~ 180 ℃, hydrolyzed to 2 hours 4 hours. 将水解得到的糠醛原液引入后续工序,经过提取毛醛,毛醛连续精制得商品糠醛。 The hydrolysis of furfural liquid is introduced subsequent step, after extraction aldehyde hair, wool continuously refined aldehyde product furfural. 本例糠醛质量检测指标详见表1。 The present embodiment detects furfural quality indicators in Table 1. 本例糠醛得率为5.5~6.5%,各项消耗详见表2。 This embodiment of furfural yield of 5.5 to 6.5%, the consumption in Table 2.

实施例3:原料使用经切割后的玉米秸秆,其水含量为22%。 Example 3: corn stover after the cut raw material, a water content of 22%. 经连续拌酸、挤压设备进行处理,酸浓在5~10%,用酸量保持在以特定的固液比上,连续送入水解釜中,水解釜容积为10立方米,采用双釜串联操作,玉米秸秆经挤压后的装填密度在280~300kg/m3,装满水解釜后通入压力为0.45~0.75MPa的水蒸汽,水解温度为145~180℃,水解2小时到4小时。 Mixed acid by continuous extrusion process equipment, acid concentration in the reactor bis 5 to 10%, with an acid to maintain a specific amount in the solid-liquid ratio, continuously fed to the hydrolysis reactor, the hydrolysis reactor volume is 10 cubic meters, using operating in series, the packing density of the extruded corn stover 280 ~ 300kg / m3, the hydrolysis reactor filled into water vapor pressure 0.45 ~ 0.75MPa, the hydrolysis temperature is 145 ~ 180 ℃, hydrolysis of 2 hours to 4 hours . 将水解得到的糠醛原液引入后续工序,经过提取毛醛,毛醛连续精制得商品糠醛。 The hydrolysis of furfural liquid is introduced subsequent step, after extraction aldehyde hair, wool continuously refined aldehyde product furfural. 本例糠醛质量检测指标详见表1。 The present embodiment detects furfural quality indicators in Table 1. 本例糠醛得率为5.5~6.0%,各项消耗详见表2。 This embodiment of furfural yield of 5.5 to 6.0%, the consumption in Table 2.

表1:实施例糠醛质量检验结果与GB 1926.1-88规定指标对比一览表 Table 1: Test Results Example furfural quality index comparison with a predetermined list GB 1926.1-88

Claims (1)

  1. 1.一种利用植物秸秆挤压造粒制取糠醛的方法,包括植物秸秆的切断、挤压打包、输送、混酸、挤压装锅、水解、蒸馏,其特征在于:1)、将整颗植物秸秆用切草机切割成2~4cm的颗粒段,然后用打包机压缩打捆后进行储存;2)、将拆捆后的植物秸秆颗粒段用混酸机混酸后再用螺旋挤压给料器连续的根据1∶0.3~0.8的固液比、按1∶2~1∶8的压缩比将植物秸秆挤压后装入水解釜中,挤压出来的稀酸重新返回到混酸机中进行混酸;在水解釜内通入压力为0.45~0.75MPa的水蒸气,保持水解温度为145~180℃,水解周期为1.0~4小时,挤压后植物秸秆的堆积密度约260~350kg/m3;3)、将水解过程中得到的糠醛原液引入后续工序,经初馏塔提取毛醛后在糠醛连续精制设备内精制最终得商品糠醛。 1. A method for the preparation of plant stalks extrusion granulation using furfural, including plant stalks cut, extruded packing, transport, mixed acid, for pressing a pot, hydrolysis, distillation, characterized in that: 1) the whole stars plant cut straw particles with turf cutter segment 2 ~ 4cm and then compressed for storage after use balers baling; 2), the demolition of the plant straw bale segment particles with mixed acid machine screw extruder and then with a mixed acid feed under continuous liquid ratio 1:0.3 to 0.8, according to the compression ratio of 1/2 to 1:8 after extrusion plant stalks kettle was charged hydrolysis, dilute acid extruded return to the machine for the mixed acid mixed acid; in the hydrolysis reactor is introduced into the water vapor pressure 0.45 ~ 0.75MPa, the hydrolysis temperature is maintained 145 ~ 180 ℃, hydrolysis period is 1.0 to 4 hours, after extrusion plant straw bulk density of about 260 ~ 350kg / m3; 3), the furfural obtained during hydrolysis liquid is introduced subsequent step, after an initial boiling Tati wool and finally obtained purified aldehyde product of furfural in a continuous furfural refining facility.
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CN102559942A (en) * 2012-01-09 2012-07-11 中德瑞生物炼制实验室(厦门)有限公司 Hydrolysis treatment method of straw hemicellulose
CN102586494A (en) * 2012-01-09 2012-07-18 中德瑞生物炼制实验室(厦门)有限公司 Hydrolytic treatment method of hemicellulose raw material
CN102586495A (en) * 2012-01-09 2012-07-18 中德瑞生物炼制实验室(厦门)有限公司 Rapid pickling and hydrolytic treatment method of straws
CN102619118A (en) * 2012-01-09 2012-08-01 中德瑞生物炼制实验室(厦门)有限公司 Hydrolytic treatment method for straw hemicellulose
CN105294613A (en) * 2015-11-24 2016-02-03 滁州市润达溶剂有限公司 Preparation method of furfural by using straw
CN105294614A (en) * 2015-11-24 2016-02-03 滁州市润达溶剂有限公司 Method for preparation of furfural from crop fiber
CN105330626A (en) * 2015-11-24 2016-02-17 滁州市润达溶剂有限公司 Method for preparing furfural by adopting steam room for pretreatment
CN105330625A (en) * 2015-11-24 2016-02-17 滁州市润达溶剂有限公司 Method for preparing furfural by adopting high-temperature pressurizing pretreatment

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CN87100099A (en) 1987-01-15 1988-08-03 涿鹿县城关镇糠醛厂 Hydrolytic technological process and installation for extracting furfural from wheat straw
CN1189492A (en) 1997-01-29 1998-08-05 柴义 Method for prodn. of furol from cornob

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CN102559942A (en) * 2012-01-09 2012-07-11 中德瑞生物炼制实验室(厦门)有限公司 Hydrolysis treatment method of straw hemicellulose
CN102586494A (en) * 2012-01-09 2012-07-18 中德瑞生物炼制实验室(厦门)有限公司 Hydrolytic treatment method of hemicellulose raw material
CN102586495A (en) * 2012-01-09 2012-07-18 中德瑞生物炼制实验室(厦门)有限公司 Rapid pickling and hydrolytic treatment method of straws
CN102619118A (en) * 2012-01-09 2012-08-01 中德瑞生物炼制实验室(厦门)有限公司 Hydrolytic treatment method for straw hemicellulose
CN102586495B (en) 2012-01-09 2014-05-28 中德瑞生物炼制实验室(厦门)有限公司 Rapid pickling and hydrolytic treatment method of straws
CN102559942B (en) 2012-01-09 2014-09-17 中德瑞生物炼制实验室(厦门)有限公司 Hydrolysis treatment method of straw hemicellulose
CN102586494B (en) 2012-01-09 2014-09-17 中德瑞生物炼制实验室(厦门)有限公司 Hydrolytic treatment method of hemicellulose raw material
CN102619118B (en) * 2012-01-09 2015-03-11 中德瑞生物炼制实验室(厦门)有限公司 Hydrolytic treatment method for straw hemicellulose
CN105294613A (en) * 2015-11-24 2016-02-03 滁州市润达溶剂有限公司 Preparation method of furfural by using straw
CN105294614A (en) * 2015-11-24 2016-02-03 滁州市润达溶剂有限公司 Method for preparation of furfural from crop fiber
CN105330626A (en) * 2015-11-24 2016-02-17 滁州市润达溶剂有限公司 Method for preparing furfural by adopting steam room for pretreatment
CN105330625A (en) * 2015-11-24 2016-02-17 滁州市润达溶剂有限公司 Method for preparing furfural by adopting high-temperature pressurizing pretreatment

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