CN106868051B - 油料作物联产加工生物能源的方法 - Google Patents

油料作物联产加工生物能源的方法 Download PDF

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CN106868051B
CN106868051B CN201611256701.7A CN201611256701A CN106868051B CN 106868051 B CN106868051 B CN 106868051B CN 201611256701 A CN201611256701 A CN 201611256701A CN 106868051 B CN106868051 B CN 106868051B
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孙付保
唐松
黎剑
周豪
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Jiangnan University
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Abstract

本发明涉及一种油料作物联产加工生物能源的方法,包括以下步骤:将油料作物种子去壳、干燥,得到含水量为5%‑12%的果壳和含水量为30%‑55%的油籽;将得到的油籽压榨、浸提,得到植物油和油籽粕;将植物油和醇进行酯化反应,分离后得到生物柴油和粗甘油;将果壳和/或油籽粕在粗甘油中蒸煮处理,经分离后获得油料粗纤维素和甘油处理液;将油料粗纤维素和甘油处理液分别经微生物发酵或厌氧消化,得到生物能源或生物基化学品。本发明之通过工业油料作物的生物炼制型资源化,实现生物能源的高效联产,显著提升农林生物质原料使用率。

Description

油料作物联产加工生物能源的方法
技术领域
本发明涉及油脂化工和生物质化工技术领域,尤其涉及一种油料作物联产加工生物能源的方法。
背景技术
目前,世界范围内石油等燃料短缺,油价也在逐渐攀升,而石油储备是有限度的,其并不属于可持续发展的资源。因此,对于可代替能源的研究一直是世界各地研究者攻克的难关,其中关于生物柴油的开发利用成为实施全世界可持续发展的能源战略的重要内容,已是当今国际上新能源开发的热点。生物柴油是以可再生原料如蓖麻油、菜籽油、回收烹饪油、动物油脂及微生物油脂等为原料,经过酯交换反应或加氢反应而得到的一种脂肪酸酯混合物或链烷烃混合物,是一种典型的环境友好型“绿色能源”,具有较好的燃料性能、安全性高、低温启动性好和润滑性好等优势,可作为化石石油的替代品。
在分析了国内外关于生物柴油的研究进展的基础上,我们发现生物柴油的生产主要采用化学合成法,且生产过程中最重要的原材料多为来源于工业化油料植物中的油脂,约占生产成本的70–80%。其中,工业化油料植物是指生产油脂或类烷烃类原料的一类能源植物,如麻风树、桐油树和乌桕等,其油籽中均含有丰富的油脂,由于其组分的特异性又不能被人体食用吸收,因此多用于生产生物能源的原材料。在我国,木本油料植物分布面积广,资源丰富,但是对其开发研究起步较晚,因此在关于油料作物加工的过程中依然存在着问题。一方面是对于油料加工废弃物的处置,如油籽粕和油籽壳,多为丢弃或焚烧,这不仅造成了环境污染,而且也降低了生物质的使用率;另一方面,生物柴油生产过程中的低品级甘油,可作为一种高沸点有机溶剂,用于木质纤维素原料的有机溶剂预处理,预处理后基质的组成结构发生了有助于微生物和酶作用的改变,便于水解糖化。目前关于工业化油料作物资源高值化利用过程中存在的原料利用率低、加工过程成本高且繁琐以及对环境污染严重等问题。
有鉴于上述的缺陷,本设计人,积极加以研究创新,以期创设一种新型油料作物联产加工生物能源的方法,使其更具有产业上的利用价值。
发明内容
为解决上述技术问题,本发明的目的是提供一种油料作物联产加工生物能源的方法,采用全系统生物炼制的理念,实现多种生物基产品的高效联产,提升了生物质原料的使用率。
本发明的一种油料作物联产加工生物能源的方法,包括以下步骤:
(1)将油料作物种子去壳、干燥,得到含水量为5%-12%的果壳和含水量为30%-55%的油籽;
(2)将步骤(1)得到的油籽压榨、浸提,得到植物油和油籽粕;
(3)将所述植物油和醇进行酯化反应,分离后得到生物柴油和粗甘油;
(4)将果壳和/或油籽粕在粗甘油中蒸煮处理,经分离后获得油料粗纤维素和甘油处理液;
(5)将步骤(4)得到的油料粗纤维素和甘油处理液分别经微生物发酵或厌氧消化,得到生物能源或生物基化学品。
进一步的,油料作物为大豆、油菜、黄脉钓樟、木姜子、苍耳子、麻风树、黄连木、蓖麻、文冠果、光皮树、乌桕、油棕、梧桐、油桐和续随子中的一种或几种。
进一步的,在步骤(3)中,将植物油和醇在催化剂的作用下进行酯化反应,醇为甲醇或乙醇,催化剂为浓硫酸或氢氧化钠。
进一步的,在步骤(3)中,粗甘油的质量分数为20-90%。
进一步的,在步骤(4)中,粗甘油为步骤(3)直接得到的粗甘油或经过脱脂、调pH、脱色、离子交换或浓缩过程精制处理而得到。
进一步的,在步骤(4)中,果壳或油籽粕与粗甘油的质量比为6:1-30:1。
进一步的,在步骤(4)中,蒸煮处理为在10-30min内加热到230-270℃,保温1-20min,再降温至70-100℃,该方法具有常压高温短时特征,对处理装置要求低,且实现了油料中木质素及半纤维素组分的高效脱除,并产生甘油自催化油料粗纤维素。
进一步的,甘油自催化油料粗纤维素中纤维素含量为40-60%,半纤维素含量为10-20%,木质素含量为10-25%。
进一步的,在步骤(4)中,蒸煮处理为在碱存在的条件下加热到160-200℃,保温1-20min,再降温至70-100℃,该方法具有常压低温短时特征,对处理装置要求低,且实现了油料中木质素及半纤维素组分的高效脱除,并产生甘油碱催化油料粗纤维素。
进一步的,在步骤(4)中,蒸煮处理后采用1-10倍室温自来水洗涤2-5次,无需使用有机溶剂洗涤,抽滤后得到油料粗纤维素。
进一步的,甘油碱催化油料粗纤维素中纤维素含量为40-60%,半纤维素含量为20-35%,木质素含量为5-15%。
本发明得到的油料粗纤维素中各组分的含量对发酵后处理有重要意义:由于木质纤维结构较为致密,该组分含量的变化间接说明木质纤维结构被打破,有利于后续酶解及发酵后处理;此外,半纤维素中的乙酰基对发酵后处理中微生物的生长有抑制作用,木质素能够对纤维素酶造成无效吸附,从而降低纤维素的酶解糖化的效率。因此,控制木质纤维基质中半纤维素及木质素含量对发酵后处理有重要意义。另外,本发明甘油蒸煮处理选择针对性较强,能够保证高效脱出木质素及半纤维素的同时,而对油料中纤维素无明显影响,从而间接提高纤维素含量。
进一步的,碱为氢氧化钠、氢氧化钾、氨水中的一种或几种。
进一步的,碱的质量为粗甘油质量的0.05%-1%。
进一步的,甘油处理液中包括发酵抑制物,发酵抑制物为糠醛和5-羟甲基糠醛。
进一步的,发酵抑制物的质量与步骤(4)中的果壳和/或油籽粕的质量比为0.01-1:1000。
进一步的,在碱存在的条件下蒸煮处理时温度较低,其发酵抑制物含量比不加碱进行蒸煮处理的低。
进一步的,在步骤(4)中,甘油处理液中含有甘油糖苷、甘油葡萄糖苷和甘油葡寡糖苷,所述甘油糖苷为甘油木寡糖苷、甘油木糖苷和甘油木聚糖苷中的一种或几种。
进一步的,在步骤(5)中,生物能源或生物基化学品为氢气、沼气、乙醇、丙酮-丁醇、丁酸、丁二酸、1,3-丙二醇、2,3-丁二醇和微生物油脂的一种或几种。
进一步的,甘油蒸煮处理过程中,在高温或碱存在条件下,丙三醇分子会与单糖(葡萄糖和木糖)或寡糖(纤维二糖、木二糖等)以糖苷键相连接,发生耦合反应,进而形成甘油糖苷、甘油葡萄糖苷和甘油葡寡糖苷,现有技术因未使用甘油溶剂,在处理过程中并不能生成上述产物;上述产物具有保湿、抗氧化功能,可作为化妆品添加剂使用,是本发明中具有高附加价值的副产物;甘油常作为一种高效碳源而被应用于微生物发酵,其存在有利于微生物的生长,此外,甘油糖苷、甘油葡萄糖苷及甘油葡寡糖苷分子中甘油与单糖或寡糖仅以糖苷键连接,其性质并未有所变化,因此对后续发酵处理并无抑制作用。
借由上述方案,本发明至少具有以下优点:
本发明采用了全系统生物炼制的理念,合理充分的利用油料作物产生多种生物基产品:在整个过程中,采用原料丰富的工业油料作物,其主要成分,如油籽粕、油籽壳、果壳和枝秧等能同时得以利用,提高了油料加工效益,降低了生产成本。现有技术对果壳和/或油籽粕进行蒸煮处理所用溶剂多为低沸点溶剂,如水、乙酸、乙醇等,在常压高温条件下易挥发,若使用封闭容器,则对设备装置要求高,而本专利中选用甘油有机溶剂进行蒸煮处理,其沸点较高,耐高温,能够实现较好的处理效果。此外,升高甘油溶剂温度,能够使得纤维基质中木质素及半纤维素的溶解度升高。与原有甘油有机溶剂预处理相比,本发明无论采用自催化高温短时还是加碱催化低温短时蒸煮都是为了降低能耗;本发明在洗涤方式上也作了调整,避免了以往的热甘油-水溶液洗涤和热水洗涤等,直接采用室温下的自来水洗涤,明显降低了运行投入成本;该预处理过程中几乎不产生糠醛和羟甲基糠醛等发酵抑制物;该发明中的甘油处理液不是用于提取半纤维素和木质素,而是用于生物培养进一步发酵产生物基产品;甘油是多种微生物优良碳源,无论是预处理液中甘油还是纤维上甘油残留均可用作后续微生物培养的碳源。该发明通过油脂加工的甘油副产物利用把生物柴油和生物乙醇等油脂加工和纤维质生物加工两大行业联系起来,有助于同时推进两大行业的商业化。
附图说明
图1表示本发明不同催化剂添加量对甘油预处理蓖麻壳酶解的影响结果;
图2表示本发明产生的发酵抑制物的检测结果;
图3是本发明甘油处理液的高效液相色谱测试图谱;
图4表示本发明不同油料作物经常压甘油有机溶剂预处理获得的粗纤维素酶解测试结果。
具体实施方式
下面结合附图和实施例,对本发明的具体实施方式作进一步详细描述。以下实施例用于说明本发明,但不用来限制本发明的范围。
实施例1
将新鲜蓖麻果经脱壳机去壳后,取10kg蓖麻籽烘干至含水量为50-55%,控制其水量有利于提高出油品质及效率,低温冷榨工艺进行压榨浸提出油,榨膛及出油温度保持在50℃,然后将得到的蓖麻油于4℃保藏备用;收集蓖麻籽壳,风干至含水量为8-10%,粉碎至5-10mm。
取上述得到的蓖麻油5kg与1kg乙醇混合均匀后置于反应器中,同时添加50g浓硫酸作为催化剂,在60℃下,搅拌速率150rpm条件下反应5h。然后将反应产物转移至真空旋转蒸发仪中,50-60℃分离出4.5kg粗生物柴油,未旋出液体为粗甘油,将粗甘油经脱脂浓缩后制成含量为70%低品级甘油。
将100g上述经粉碎后的蓖麻籽壳与1.4kg上述70%低品级甘油置于蒸煮装置中,250rpm搅拌速率下,加热升温至250℃,然后保温煮10分钟。反应结束后冷却至100℃,加入300g自来水后搅拌混匀,继续降温至50-60℃。由于甘油较为稠密,粘度较低,一些脱除的木质素常沾黏在物料表面未被完全溶解在甘油中,因此加入沸水形成甘油水溶液,同时加以机械搅拌,更利于木素的溶解。然后用G4砂芯漏斗抽滤,再用自来水洗脱抽滤3次(每次0.4kg);滤渣为粗纤维素,其质量为蓖麻籽壳的66%,其纤维素含量52%,半纤维素与木质素脱除率分别为60%和40%。滤液即为甘油处理液。
取上述粗纤维素50g,加入450g磷酸盐缓冲液(pH 4.8),再添加13mL纤维素酶C-Tce2(120FPU/mL),150rpm,50℃预酶解24h后接入10%安琪酿酒酵母,3g硫酸铵以及5mg磷酸二氢钾,37℃发酵72h,得到乙醇,其产量达到43g.L-1
实施例2
将新鲜蓖麻果经脱壳机去壳后,取10kg蓖麻籽烘干至含水量为50-55%,控制其水量有利于提高出油品质及效率,低温冷榨工艺进行压榨浸提出油,榨膛及出油温度保持在50℃,然后将得到的蓖麻油于4℃保藏备用;收集蓖麻籽壳,风干至含水量为8-10%,粉碎至5-10mm。
取上述得到的蓖麻油5kg与1kg乙醇混合均匀后置于反应器中,同时添加50g浓硫酸作为催化剂,在60℃下,搅拌速率为150rpm条件下反应5h。然后将反应产物转移至真空旋转蒸发仪中,50-60℃分离出4.5kg粗生物柴油,未旋出液体为粗甘油,将粗甘油经脱脂浓缩后制成含量为70%低品级甘油。
将100g上述经粉碎后的蓖麻籽壳与1.4kg上述70%低品级甘油置于蒸煮装置中,添加9g过氢氧化钠,加热升温,250rpm下搅拌,升温至180℃时保温煮10分钟。反应结束后冷却至100℃,加入300g自来水后搅拌混匀,降温至50-60℃,用G4砂芯漏斗抽滤,再用自来水洗脱抽滤5次(每次0.4kg);滤渣为油料粗纤维素,其质量为蓖麻籽壳的52%,其纤维素含量57%,半纤维素与木质素脱除率分别为40%和80%。滤液即为甘油处理液,甘油处理液中含有甘油糖苷、甘油葡萄糖苷和甘油葡寡糖苷,甘油糖苷为甘油木寡糖苷、甘油木糖苷和甘油木聚糖苷。
取上述油料粗纤维素50g,加入450g磷酸盐缓冲液(pH 4.8),再添加13mL纤维素酶C-Tce2(120FPU/mL),150rpm,50℃预酶解24h后接入10%安琪酿酒酵母,3g硫酸铵以及5mg磷酸二氢钾,37℃发酵72h,得到乙醇,其产量达到55g.L-1
使用本实施例的方法,改变催化剂的加入量,能够改变蓖麻壳的酶解产量。图1是本发明在碱催化蒸煮条件下,蒸煮温度为180℃,保温时间为20min时,不同氢氧化钠添加量对甘油预处理蓖麻壳酶解的影响。其中,图1中a代表预处理量,b代表纤维素保留率,c代表半纤维素脱出率,d代表木质素脱出率,e代表甘油预处理后甘蔗渣水解24小时的酶解率(2%底物浓度,酶载量15FPU/g DM)。从图中可以看出,随着碱添加量的增加,纤维素保留率始终保持在85%左右,说明本发明关于甘油碱催化预处理方法具有较高选择针对性。而且,当碱添加量增至2(%总体系)时,木质素的脱除率达到80%左右,且纤维素酶解率最高,但继续提高碱的添加量对纤维素酶解率并未有显著提高。说明本发明于甘油蒸煮预处理中添加少量的碱,降低了蒸煮温度的同时,能快速的实现蓖麻籽壳的高效预处理效果,进而提高其可酶解性。
实施例3
将新鲜油棕果经脱壳机去壳后,取10kg油棕籽烘干至含水量为30-40%,低温冷榨工艺进行压榨浸提出油,榨膛及出油温度保持在50℃,然后将得到的棕油于4℃保藏备用;收集油棕籽粕,风干至含水量为5-8%,粉碎至7–10mm。
取上述得到的棕油5kg与1kg乙醇混合均匀后置于反应器中,同时添加30g氢氧化钠作为催化剂,在50℃下,搅拌速率150rpm条件下反应4h。然后将反应产物转移至真空旋转蒸发仪中,50-60℃蒸馏出4kg粗生物柴油,未旋出液体为粗甘油,将粗甘油经脱脂浓缩后制成含量为75%低品级甘油。
取上述得到的粉碎后的500g油棕籽粕与5kg 70%乙醇水溶液混合均匀,全程超声辅助(400W),70℃水浴,提取两次,共3h,油棕籽粕中部分多酚物质溶于滤液中,分离提取出的多酚物质为30g,收集滤渣(400g),滤渣为油籽粕,自然风干后于4℃保藏备用。
将上述经粉碎后的油籽粕100g和1.8kg上述75%低品级甘油溶液置于蒸煮装置中,200rpm搅拌加热升温,240℃蒸煮15分钟。反应结束后,冷却至100℃,加入320g自来水,机械搅拌降温至50-60℃,用自来水洗脱、G4砂芯漏斗抽滤3次(每次0.4kg);滤渣为粗纤维素,其质量为反应前油籽粕55%,其纤维素含量54%,半纤维素与木质素脱除率分别为56%和48%。滤液即为甘油处理液。
取上述粗纤维素50g,加入450g磷酸盐缓冲液(pH 4.8),再添加13mL纤维素酶C-Tce2(120FPU/mL),150rpm,50℃预酶解24h后接入10%安琪酿酒酵母,3g硫酸铵以及5mg磷酸二氢钾,发酵期间间歇补加底物至基质浓度达到30%(w/w),37℃发酵72h,得到乙醇,其产量达到57g.L-1
实施例4
将新鲜油棕果经脱壳机去壳后,取10kg油棕籽烘干至含水量为30-40%,低温冷榨工艺进行压榨浸提出油,榨膛及出油温度保持在50℃,然后将得到的棕油于4℃保藏备用;收集油棕籽粕,风干至含水量为5-8%,粉碎至7-10mm。
取上述得到的棕油5kg与1kg乙醇混合均匀后置于反应器中,同时添加30g氢氧化钠作为催化剂,在50℃下,搅拌速率150rpm条件下反应4h。然后将反应产物转移至真空旋转蒸发仪中,50-60℃蒸馏出4kg粗生物柴油,未旋出液体为粗甘油,将粗甘油经脱脂浓缩后制成含量为75%低品级甘油。
将实施例3中经粉碎后的油棕籽粕100g和1.8kg上述75%低品级甘油溶液置于蒸煮装置中,添加12g氨水,加热升温至200℃,200rpm搅拌,200℃蒸煮6分钟。反应结束后,冷却至100℃,加入320g自来水,机械搅拌,降温至50-60℃,用自来水洗脱、G4砂芯漏斗抽滤3次(每次0.4kg);滤渣为粗纤维素,其质量为反应前油棕籽粕的55%,其纤维素含量60%,半纤维素与木质素脱除率分别为70%和80%。滤液即为甘油处理液,甘油处理液中含有甘油糖苷、甘油葡萄糖苷和甘油葡寡糖苷,甘油糖苷为甘油木寡糖苷、甘油木糖苷和甘油木聚糖苷。
取上述粗纤维素50g,加入450g磷酸盐缓冲液(pH 4.8),再添加13mL纤维素酶C-Tce2(120FPU/mL),150rpm,50℃预酶解24h后接入10%安琪酿酒酵母,3g硫酸铵以及5mg磷酸二氢钾,发酵期间间歇补加底物至基质浓度达到30%(w/w),37℃发酵72h,得到乙醇,其产量达到68g.L-1
实施例5
将新鲜文冠果经脱壳机去壳后,取10kg文冠籽烘干至含水量为30-40%,低温冷榨工艺进行压榨浸提出油,榨膛及出油温度保持在50℃,然后将得到的文冠籽油于4℃保藏备用;收集文冠籽粕,风干至含水量为8–12%,粉碎至3-10mm。
取上述得到的文冠籽油5kg与1kg乙醇混合均匀后置于反应器中,同时添加20g氢氧化钠作为催化剂,在80℃下,搅拌速率200rpm条件下反应3h。然后将反应产物转移至真空旋转蒸发仪中,50-60℃蒸馏出5kg粗生物柴油,未旋出液体为粗甘油,将粗甘油经脱脂浓缩后制成含量为83%低品级甘油。
取上述得到的粉碎后的500g文冠果壳与3.5kg 70%乙醇水溶液混合均匀,全程超声辅助(400W),70℃水浴,提取两次,共3h,文冠果壳中皂苷类物质溶于滤液中,其提取率为0.6mg/g,收集滤渣(450g),滤渣为果壳和油籽粕,自然风干后于4℃保藏备用。
将上述滤渣100g和1.4kg上述83%低品级甘油溶液置于蒸煮装置中,添加10g氢氧化钾,加热升温至160℃时保温20min,250rpm条件下搅拌蒸煮。反应结束后,冷却至100℃,缓慢加入300g自来水,机械搅拌,降温至50-60℃,用自来水洗脱、G4砂芯漏斗抽滤5次(每次0.3kg);滤渣为油料粗纤维素,其质量为反应前滤渣的63%,其纤维素含量58%,半纤维素与木质素脱除率分别为60%和72%。收集蒸煮液及滤液,混匀后经浓缩除去水分后,获得浓度为87%的粗甘油,可循环使用8次。
取上述油料粗纤维素50g,加入450g磷酸盐缓冲液(pH 4.8),再添加15mL纤维素酶C-Tce2(120FPU/mL),150rpm,50℃预酶解24h后接入15%安琪酿酒酵母,3g硫酸铵以及5mg磷酸二氢钾,发酵期间间歇补加底物至基质浓度达到35%(w/w),同时添加10mL C-Tce2纤维素酶,37℃发酵72h,得到乙醇,其产量达到75g.L-1
图2是不同保温时间时,对本发明甘油处理液中发酵抑制物的检测结果。图中5-HMF代表5-羟甲基糠醛,FF代表糠醛。从图中可以看出,随着保温时间的增加,抑制物产量始终保持较低水平,仅为文冠果壳质量的0.3-0.5‰左右,说明本发明甘油蒸煮预处理过程中产生发酵抑制物的含量较低,可忽略不计。
图3是本发明甘油处理液的高效液相色谱测试图谱,图中保留时间为32.5min的峰为甘油木糖苷,保留时间为36.1min的峰为甘油木二糖苷。这表明,本发明甘油蒸煮处理过程中可以产生具有高附加价值的甘油木糖苷和甘油木二糖苷。此外,出峰较为明显,且两峰均无拖尾现象,也说明本发明中产物纯度较高,无相似物或杂质产生,有利于产物分离回收。
图4是本发明不同油料作物经常压甘油有机溶剂预处理获得的粗纤维素酶解测试结果。酶解条件为5%固体浓度(w/v),纤维素酶Cellic CTec2酶载量为4FPU/g干基质,pH4.8柠檬酸缓冲液50℃震荡(150rpm)酶解72hr。从图中可以看出,不同油料作物经甘油有机溶剂预处理后,其酶解率相似,且均达到90%左右,具有较高的可酶解效率,说明本发明可以高效的脱除其中木质素及半纤维素,从而提高其可酶解性。这也表明本发明甘油蒸煮预处理对于不同种类油料作物具有较强实用性及适用性。
以上所述仅是本发明的优选实施方式,并不用于限制本发明,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明技术原理的前提下,还可以做出若干改进和变型,这些改进和变型也应视为本发明的保护范围。

Claims (9)

1.一种油料作物联产加工生物能源的方法,其特征在于,包括以下步骤:
(1)将油料作物种子去壳、干燥,得到含水量为5%-12%的果壳和含水量为30%-55%的油籽;
(2)将步骤(1)得到的所述油籽压榨、浸提,得到植物油和油籽粕;
(3)将所述植物油和醇进行酯化反应,分离后得到生物柴油和粗甘油;
(4)将所述果壳和/或油籽粕在粗甘油中蒸煮处理,经分离后获得油料粗纤维素和甘油处理液;蒸煮处理为加热到230-270℃,保温1-20min,再降温至70-100℃或者
蒸煮处理为在碱存在的条件下加热到160-200℃,保温1-20min,再降温至70-100℃;
(5)将步骤(4)得到的所述油料粗纤维素和甘油处理液分别经微生物发酵或厌氧消化,得到生物能源或生物基化学品。
2.根据权利要求1所述的油料作物联产加工生物能源的方法,其特征在于:所述油料作物为大豆、油菜、黄脉钓樟、木姜子、苍耳子、麻风树、黄连木、蓖麻、文冠果、光皮树、乌桕、油棕、梧桐、油桐和续随子中的一种或几种。
3.根据权利要求1所述的油料作物联产加工生物能源的方法,其特征在于:所述碱为氢氧化钠、氢氧化钾和氨水中的一种或几种。
4.根据权利要求1所述的油料作物联产加工生物能源的方法,其特征在于:所述碱的质量为所述粗甘油质量的0.05%-1%。
5.根据权利要求1所述的油料作物联产加工生物能源的方法,其特征在于:在步骤(4)中,蒸煮处理后用水洗涤2-5次。
6.根据权利要求1所述的油料作物联产加工生物能源的方法,其特征在于:在步骤(4)中,所述甘油处理液中包括发酵抑制物,所述发酵抑制物为糠醛和5-羟甲基糠醛。
7.根据权利要求6所述的油料作物联产加工生物能源的方法,其特征在于:所述发酵抑制物的质量与步骤(4)中的所述果壳和/或油籽粕的质量比为0.01:1000-1:1000。
8.根据权利要求1所述的油料作物联产加工生物能源的方法,其特征在于:在步骤(4)中,所述甘油处理液中含有甘油糖苷、甘油葡萄糖苷和甘油葡寡糖苷,所述甘油糖苷为甘油木寡糖苷、甘油木糖苷和甘油木聚糖苷中的一种或几种。
9.根据权利要求1所述的油料作物联产加工生物能源的方法,其特征在于:在步骤(5)中,所述生物能源或生物基化学品为氢气、沼气、乙醇、丙酮-丁醇、丁酸、丁二酸、1,3-丙二醇、2,3-丁二醇和微生物油脂的一种或几种。
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