This invention belongs to the field of
butanediol production, and relates to a purification device and method for bio-based
succinic acid raw materials for preparing green
butanediol, as well as its application. The purification device for bio-based
succinic acid raw materials includes a bio-based
succinic acid raw material source, a low-carbon
alcohol solvent source, a mixing container, and an adsorption
tower. The adsorption
tower contains four
layers of adsorbent, including, from top to bottom, an
activated carbon layer, a macroporous polysulfonate-based
styrene cation exchange resin layer, a
polystyrene macroporous strong acid cation exchange resin layer, and a particulate retention material layer. This invention passes the obtained bio-based succinic acid solution into the adsorption
tower containing the specific four
layers of adsorbent. Through direct adsorption, succinic acid raw materials meeting the requirements for BDO production can be directly obtained from the outlet of the adsorption tower. This reduces the
impact of impurities on the activity and lifespan of the
esterification reaction catalyst, thus providing a
raw material guarantee for obtaining BDO with the required purity.