Research progress in influence of process parameter on solvothermal liquefaction degradation of polyethylene

doi:10.19491/j.issn.1001-9278.2024.12.015

Abstract

Abstract:

This paper reviewed the research progress in the influence of process conditions， including temperature， pressure， residence time， solvent type， and mass ratio of solvent to plastics， on the distribution of degraded products from the aspect of its degradation mechanisms by taking a widely used thermoplastic， polyethylene， as the example. In addition， the industrialization devices reported currently for solvothermal liquefaction degradation were introduced， and the future research direction was prospected.

Key words: polyethylene, solvothermal liquefaction, degradation

CLC Number:

TQ325.1⁺2

MENG Jia, LIU Tongju. Research progress in influence of process parameter on solvothermal liquefaction degradation of polyethylene[J]. China Plastics, 2024, 38(12): 90-96.

Figures/Tables 2

References 60

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作者	塑料种类	反应装置	温度/℃	压力/MPa	停留时间/min	溶剂类型	溶剂/塑料（S/P）质量比	最高油品产率及对应的最佳操作条件
Rangarajan^［10］ et al	PE⁃HD； PE⁃LD	50 mL小型搅拌釜反应器	440~490	1.5	30；60	氢气	—	75 %；450 ℃
Passos^［30］ et al	PE⁃HD； PE⁃LD	20 mL炸弹式反应器	350	—	20	水	17∶1	1 %
张海峰^［31］等	PE⁃HD	180 mL连续反应器	500~550	20~30	1.4~4	水	—	79 %；530 ℃，2 min，25 MPa
Su^［32］ et al	PE⁃HD	125 mL搅拌釜反应器	450~480	—	0~30	水	2∶1~10∶1	91.4 %；460 ℃，1 min，6∶1（S/P）质量比
Moriya^［33］ et al	PE⁃HD	42 mL炸弹高压釜	425	—	0~120	水	5∶1	90.2 %
Yuan^［34］ et al	PE⁃HD	500 mL搅拌釜	339~439	15.2~27.1	0~80	水	0∶1~1∶0	36.5 %；混合了木屑、379 ℃，20 min，6∶1（S/P）质量比
Pei^［35］ et al	PE⁃HD	1 000 mL搅拌釜反应器	320~380	9~11.4	—	乙醇	7∶1~17∶1	48.35 %；339 ℃
吴学华^［36］	PE⁃HD	25 mL间歇式反应器	380~420	25	30~120	水	10∶1	—
Lu^［37］ et al	PE⁃HD	33~37 mL间歇式反应器	425~475	—	30~240	水	—	87；450 ℃，120 min
Colnik^［38］ et al	PE⁃LD	75 mL高压间歇反应器	380~450	22~42	15~240	水	5∶1	98% ；450 ℃， 42 MPa
苏晓丽^［39］等	PE⁃LD	125 mL间歇式高压釜反应器	450~480	—	0~30	水	2∶1~10∶1	91.4 %；460 ℃，1 min，6∶1（S/P）质量比
Wong^［40］ et al	PE⁃LD	1 000 mL间歇式反应器	162~338	—	37~143	水	1.9∶1~7.1∶1	13.6 %
Liu^［9］ et al	PE⁃LD	100 mL间歇式反应器	350~400	9.04~22	90	水；甲醇；丙酮	6∶1	75.34 %；350 ℃，丙酮

作者	塑料种类	反应装置	温度/℃	压力/MPa	停留时间/min	溶剂类型	溶剂/塑料（S/P）质量比	最高油品产率及对应的最佳操作条件
Rangarajan^［10］ et al	PE⁃HD； PE⁃LD	50 mL小型搅拌釜反应器	440~490	1.5	30；60	氢气	—	75 %；450 ℃
Passos^［30］ et al	PE⁃HD； PE⁃LD	20 mL炸弹式反应器	350	—	20	水	17∶1	1 %
张海峰^［31］等	PE⁃HD	180 mL连续反应器	500~550	20~30	1.4~4	水	—	79 %；530 ℃，2 min，25 MPa
Su^［32］ et al	PE⁃HD	125 mL搅拌釜反应器	450~480	—	0~30	水	2∶1~10∶1	91.4 %；460 ℃，1 min，6∶1（S/P）质量比
Moriya^［33］ et al	PE⁃HD	42 mL炸弹高压釜	425	—	0~120	水	5∶1	90.2 %
Yuan^［34］ et al	PE⁃HD	500 mL搅拌釜	339~439	15.2~27.1	0~80	水	0∶1~1∶0	36.5 %；混合了木屑、379 ℃，20 min，6∶1（S/P）质量比
Pei^［35］ et al	PE⁃HD	1 000 mL搅拌釜反应器	320~380	9~11.4	—	乙醇	7∶1~17∶1	48.35 %；339 ℃
吴学华^［36］	PE⁃HD	25 mL间歇式反应器	380~420	25	30~120	水	10∶1	—
Lu^［37］ et al	PE⁃HD	33~37 mL间歇式反应器	425~475	—	30~240	水	—	87；450 ℃，120 min
Colnik^［38］ et al	PE⁃LD	75 mL高压间歇反应器	380~450	22~42	15~240	水	5∶1	98% ；450 ℃， 42 MPa
苏晓丽^［39］等	PE⁃LD	125 mL间歇式高压釜反应器	450~480	—	0~30	水	2∶1~10∶1	91.4 %；460 ℃，1 min，6∶1（S/P）质量比
Wong^［40］ et al	PE⁃LD	1 000 mL间歇式反应器	162~338	—	37~143	水	1.9∶1~7.1∶1	13.6 %
Liu^［9］ et al	PE⁃LD	100 mL间歇式反应器	350~400	9.04~22	90	水；甲醇；丙酮	6∶1	75.34 %；350 ℃，丙酮

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