Non-hydrogen Catalytic Dewaxing for Oil Production

2011 ◽  
Vol 418-420 ◽  
pp. 1677-1681
Author(s):  
Jie Li ◽  
Lian Xiong ◽  
Fei Ding ◽  
Hai Rong Zhang ◽  
Xin De Chen

Waste plastics can be converted to diesel oil and lube base oil by thermal pyrolysis and dewaxing. ZEM-5, H-ZEM-5, Fe/H-ZEM-5 and Co/H-ZEM-5 catalyst were prepared. The influences of additive metals and type of molecular sieves on catalyst were discussed. The results showed that the additon of metallic components enhances the activity of catalyst, produces the low pour point diesel oil, and greatly reduces the pour point of lube base oil. The catalyst impregnated with Fe was more effective than one impregnated with Co. The qualities of oil production were also improved more with H-ZEM-5 than ZEM-5.

2014 ◽  
Vol 1025-1026 ◽  
pp. 842-845
Author(s):  
Takaaki Wajima ◽  
Zar Hlaing Zar ◽  
Nakagome Hideki

Polyethylene (HDPE) was pyrolyzed at 450 °C using a reflux condenser to produce oil for recycling of waste plastics. HDPE was pyrolyzed in the glass reactor with a reflux condenser, and the reflux condenser was varied from 150 °C to 200 °C. With increasing the temperature of reflux condenser, the yield of oil increases and the product oil contains the components with higher molecular weight.


2018 ◽  
Vol 10 (11) ◽  
pp. 3979 ◽  
Author(s):  
Azubuike Anene ◽  
Siw Fredriksen ◽  
Kai Sætre ◽  
Lars-Andre Tokheim

Thermal and catalytic pyrolysis of virgin low-density polyethylene (LDPE), high-density polyethylene (HDPE), polypropylene (PP) and mixtures of LDPE/PP were carried out in a 200 mL laboratory scale batch reactor at 460 °C in a nitrogen atmosphere. Thermogravimetric analysis (TGA) was carried out to study the thermal and catalytic degradation of the polymers at a heating rate of 10 °C/min. The amount of PP was varied in the LDPE/PP mixture to explore its effect on the reaction. In thermal degradation (TGA) of LDPE/PP blends, a lower decomposition temperature was observed for LDPE/PP mixtures compared to pure LDPE, indicating interaction between the two polymer types. In the presence of a catalyst (CAT-2), the degradation temperatures for the pure polymers were reduced. The TGA results were validated in a batch reactor using PP and LDPE, respectively. The result from thermal pyrolysis showed that the oil product contained significant amounts of hydrocarbons in the ranges of C7–C12 (gasoline range) and C13–C20 (diesel range). The catalyst enhanced cracking at lower temperatures and narrowed the hydrocarbon distribution in the oil towards the lower molecular weight range (C7–C12). The result suggests that the oil produced from catalytic pyrolysis of waste plastics has a potential as an alternative fuel.


2016 ◽  
Vol 9 ◽  
pp. S1053-S1058 ◽  
Author(s):  
Jumat Salimon ◽  
Bashar Mudhaffar Abdullah ◽  
Nadia Salih

2007 ◽  
Vol 25 (7) ◽  
pp. 853-866 ◽  
Author(s):  
A. M. Al Nagar ◽  
E. A. El Shamy

ChemSusChem ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 4723-4723
Author(s):  
Angela M. Norton ◽  
Sibao Liu ◽  
Basudeb Saha ◽  
Dionisios G. Vlachos

2020 ◽  
Vol 13 (13) ◽  
pp. 33-36
Author(s):  
Buddha Kumar Shrestha ◽  
Hira Mani Trital ◽  
Armila Rajbhandari

A mixed metal oxide (CuO-ZnO) additives has been successfully synthesized in laboratory by co-precipitation technique. The optimum ratio of CuO and ZnO in mixed metal oxide was found to be 1:1. The sodium lauryl sulfate (SLS) has been used as surfactant. The obtained material was found to be crystalline having crystalline size of 18 nm. The stretching band in FTIR spectra at around 1072 cm-1 to 750 cm-1 and around 600 cm-1 indicates the presence of Zn-O and Cu-O bonds. As prepared nano-particles have been used as nano additive in base oil to improve physio-chemical parameters of lubricants. The results revealed that the additive blended base oil (lubricant) has shown excellent lubrication properties. The higher kinematic viscosity of 33.0504 and 6.0158 at 40°C and 100°C respectively showed that as prepared additive blended lubricant is of ISO-32 category according to ISO grading system for lubricants. Similarly, viscosity index was found to be improved from 101 to 129. The pour point was found to be significantly decreased from -6°C to -24°C. So it can be used as good pour point depressant and could be used even in the extreme cold environment condition. The flash point was found to be increased from 215°C to 220°C indicating that the prepared mixed metal oxide (CuO-ZnO) acts as flash point enhancer. The copper strip corrosion rating was found to be 1b for additive indicating the non corrosive nature. The absence of moisture and pH around the neutral range 6.18 showed the additive blended lubricant is not harmful for machinery devices.


2009 ◽  
Vol 27 (6) ◽  
pp. 568-574 ◽  
Author(s):  
M. F. Menoufy ◽  
A. E. Nadia ◽  
H. S. Ahmed

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