Method for preparing pentane foaming agent from cracking C5

• Main Authors: ZHAO YANCHAO, ZHANG HUAIMIN, LU SHAOFEI, ZHANG WENKUI, WU JIANQING
• Format: Patent
• Language: Chinese; English
• Published: 27.02.2018
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC CHEMISTRY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

The invention discloses a method for preparing pentane foaming agent from cracking C5. The method comprises the following processing steps: (1) a desulfuration rectification stage: conveying the cracking C5 raw material through a pump, adding 0.3% of a desulfurizing agent, guiding the cracking C5 raw material into a buffer tank, and then guiding the cracking C5 raw material into a rectifying towerso as to obtain the material, namely a desulfuration product, on the top of the rectifying tower; (2) hydrogenation stage: guiding the desulfuration product obtained in the step (1) into a hydrogenation reactor through preheating of a preheater; and (3) separation stage: sequentially connecting the desulfuration product through the four-stage rectifying tower such as a dehydrogenation tower, an isopentane separation tower, an n-pentane separation tower and a cyclopentane separation tower, and obtaining isopentane from the top of the isopentane separation tower, n-pentane from the top of the n-pentane separation tower