admin 管理员组文章数量: 1087652
2024年4月13日发(作者：移动端ui设计)
1,3-丙二醇的工艺流程
In English:
1,3-Propanediol Production Process.
1,3-Propanediol (1,3-PDO) is a versatile chemical
intermediate used in the production of a wide range of
products, including polyesters, pharmaceuticals, and
personal care products. The primary production method for
1,3-PDO is through the fermentation of renewable feedstocks,
such as corn sugar or glycerol. The fermentation process
involves the use of genetically modified bacteria that
convert the feedstock into 1,3-PDO.
The following is a general overview of the 1,3-PDO
production process:
1. Feedstock Preparation: The feedstock for 1,3-PDO
production is typically corn sugar or glycerol. Corn sugar
is derived from the hydrolysis of cornstarch, while
glycerol is a byproduct of the biodiesel production process.
The feedstock is prepared by adjusting its pH and nutrient
content to optimize fermentation conditions.
2. Fermentation: The fermentation process is carried
out in large bioreactors, which are sterile vessels
designed to provide a controlled environment for the growth
and metabolism of the bacteria. The bioreactors are
inoculated with the genetically modified bacteria, which
consume the feedstock and produce 1,3-PDO as a byproduct.
The fermentation process typically lasts for several days.
3. Product Separation: After fermentation, the broth
containing 1,3-PDO is separated from the bacteria. This is
typically done through a combination of filtration and
centrifugation. The resulting broth is then subjected to a
series of purification steps, such as distillation and
crystallization, to remove impurities and concentrate the
1,3-PDO.
4. Product Finishing: The purified 1,3-PDO is then
dried and packaged for storage and distribution. The final
product is a white, crystalline powder with a melting point
of 159-161°C and a boiling point of 214-216°C.
In Chinese:
1,3-丙二醇工艺流程。
1,3-丙二醇（1,3-PDO）是一种用途广泛的化学中间体，可用于
生产多种产品，包括聚酯、药品和个人护理产品。生产1,3-丙二醇
的主要方法是发酵可再生原料，如玉米糖或甘油。发酵过程涉及使
用经过基因改造的细菌，将原料转化为1,3-丙二醇。
以下是对1,3-丙二醇生产过程的一般概述：
1. 原料制备， 1,3-丙二醇生产的原料通常是玉米糖或甘油。
玉米糖是从玉米淀粉水解衍生的，而甘油是生物柴油生产过程的副
产品。通过调节原料的pH值和营养含量来优化发酵条件来制备原料。
2. 发酵， 发酵过程在大型生物反应器中进行，这些反应器是
无菌容器，旨在为细菌的生长和代谢提供受控环境。向生物反应器
中接种经过基因改造的细菌，这些细菌会消耗原料并产生1,3-丙二
醇作为副产品。发酵过程通常持续数天。
3. 产品分离， 发酵后，将含有1,3-丙二醇的肉汤从细菌中分
离出来。这通常通过过滤和离心的组合来完成。然后对所得肉汤进
行一系列纯化步骤，例如蒸馏和结晶，以去除杂质并浓缩1,3-丙二
醇。
4. 产品精制， 纯化的1,3-丙二醇然后干燥并包装以储存和分
发。最终产品是一种白色结晶粉末，熔点为 159-161°C，沸点为
214-216°C。
版权声明：本文标题：1,3-丙二醇的工艺流程 内容由网友自发贡献，该文观点仅代表作者本人， 转载请联系作者并注明出处：http://www.roclinux.cn/b/1712954514a614104.html， 本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌抄袭侵权/违法违规的内容，一经查实，本站将立刻删除。
发表评论