scholarly journals EFFECT OF ZEOLITE ON THE CATALYTIC CRACKING OF TAR YIELDS MAHOGANY WOOD PYROLYSIS

2021 ◽  
pp. 1-7
Author(s):  
Widya Wijayanti
Keyword(s):  
Catalytic Cracking ◽  
Zeolite Catalyst ◽  
Pyrolysis Product ◽  
Chemical Constituent ◽  
Wood Pyrolysis ◽  
Hydrocarbon Chains ◽  
Acidic Compounds ◽  
Oil Fuel ◽  
Cracking Process

In this study, the effects of zeolite were observed to investigate the formation of a pyrolysis product, which is tar yield. Tar yields receive the most attention because of their potential as a bio-oil and chemical feedstocks. For this reason, efforts to increase tar yield were made, one of which was by adding zeolite to the pyrolysis process. The role of zeolite here was a pyrolysis catalyst. This research was conducted on a real pilot plant pyrolysis reactor which utilized mahogany wood as biomass feedstock with the addition of zeolite that was 0–50% of the total mass pyrolysis feedstock. The temperatures set in this pyrolysis were 250 °C, 500 °C, and 800 °C. The test results were measured in terms of the tar yield’s volume and mass. The chemical composition of tar yield was tested using a Gas Chromatograph Mass Spectrometry (GC-MS) to measure the percentage of its chemical constituent compounds. Then, the formation mechanism of tar compounds from pyrolysis was described by using HyperChem simulation. The results showed that an increase in zeolite catalyst percentage would generate more volume of tar yields. It was due to the breaking of biomass hydrocarbon chains, increasing the production of tar yields. Zeolite also affected the formation of hydrocarbon chains in tar yields where the chains became shorter as the percentage of zeolite catalyst rose. The mechanism of increasing tar product was due to the role of zeolite as a catalyst in the catalytic cracking process which is almost similar to acid-base reactions of Brønsted-Lowry and Lewis. This reaction took place when the pyrolysis yields moved through the pores of zeolite, breaking the long hydrocarbon chains into shorter ones which were dominated by alkenes, aromatic, and acidic compounds formation. In addition, acidic compounds represented by acetic acid function as a flammable matter possess the potential of becoming oil-fuel.

Study on extraction of pollutant free flammable fuel from contaminated automobile waste lube oil

2020 ◽  
Vol 2 (100) ◽  
pp. 78-84
Author(s):  
J. Thanikachalam ◽  
S. Karthikeyan
Keyword(s):  
Catalytic Cracking ◽  
Internal Combustion Engines ◽  
Nano Particles ◽  
Engine Oil ◽  
Chain Molecules ◽  
Waste Engine Oil ◽  
Lubricant Oil ◽  
Contaminated Waste ◽  
Oil Fuel ◽  
Cracking Process

Purpose: of this paper is to investigate the reusability of contaminated waste lubricant oil as flammable fuel by thermal and catalytic cracking process followed by distillation. It also includes the study of using Zeolite and Nickel nano particles as catalyst and its influence catalytic cracking. Design/methodology/approach: A conventional sterilization technique called Autoclaving method, uses high-pressure steam to separate water and other solid waste from the lube oil. It is followed by thermal cracking which breaks the molecular chains and decompose the waste lube oil. The autoclaving process works by the concept that the boiling point of water (or steam) increases when it is under pressure. Findings: Now a days, Industrial and Automobile waste lubricating oils are giving big threat ecology while burning and disposing on bare land. Furthermore, they discharged into the open environment which might make destructive sicknesses to ecology. In water, oil is a visible pollutant, floating as a scum on the surface. Moreover, there is a gradual rise in fuel requirement across the globe, and the consumption of oil assets have driven the researchers to find elective power for internal combustion engines. By the way, diminishing of fossil sources, growing of demand and cost of petroleum based fuels and its environmental hazards as a result of burning or disposing on land have encouraged to investigate possibility of recycling of waste engine oil. Research limitations/implications: A series of process such as filtration, cracking followed by distillation needs expensive experimental setup and regular maintenance as the extracted flammable oil fuel possess significant range of dynamic viscosity values. As all real fluids has its own viscosity, in near future, an investigation is about to do on its behaviour on blending with other flammable fluids. Practical implications: Although the result of this investigation conforming its flammable characteristic of the extracted fuel, the quantity of pollutant free flammable fuel from waste contaminated lube oil being extracted is significant, the cost of catalyst is considerably more, as it plays the most vital part in cracking. This effort likely also reduces foreign exchange, reduces greenhouse emissions and enhances regional development especially in developing countries. Originality/value: The novelty of the work is to prepare pollutant free flammable fuel from waste Lube oil by catalytic cracking process. Here Zoelite and Nickel nanoparticles are used as catalyst which breaks the long-chain molecules of the high boiling hydrocarbon liquids into much shorter molecules.

scholarly journals CHARASTERISTICS OF CURCAS BEAN BIODIESEL AFTER CATALYTIC CRACKING WITH H-ZEOLITE CATALYST

2019 ◽  
Vol 7 (8) ◽  
pp. 367-373
Author(s):  
Julianus Dising ◽  
Laurensius Lehar
Keyword(s):  
Iodine Number ◽  
Catalytic Cracking ◽  
Zeolite Catalyst ◽  
Cetane Number ◽  
Carbon Chain ◽  
Saponification Number ◽  
Raw Material ◽  
Catalyst Characterization ◽  
High Productivity ◽  
Cracking Process

The development of curcas bean (Jatropha curcas Linn) as a raw material for biodiesel have a very promising potential, because in addition to producing oil with high productivity (40-45%). Curcas bean oil was transesterified at 60oC for 120 minutes to produce biodiesel. The produced biodiesel was the cracked with the H-zeolite catalyst at 70oC, 80oC, 90oC, 100oC, 110oC, and 120oC for 60, 90, and 120 minutes. This study was aimed to characterize the curcas bean biodiesel that had been cracked using H-zeolite catalyst. Characterization of the biodiesel from cracking process included viscosity, saponification number, iodine number, and cetane number. Results of the study indicated that the breakdown of carbon chain in the fatty acid of curcas bean biodiesel can be achieved by catalytic cracking. This was evidenced by the reduced viscosity and iodine number and increased saponification number and cetane number of the curcas bean biodiesel after cracking. Analysis of the curcas bean biodiesel product obtained indicated that the optimum temperature was 90oC and optimum reaction time was 180 minutes. Characteristics of the curcas bean biodiesel on these conditions included the viscosity of 3.850 cSt, saponification number of 206.332 mg KOH/g sample, iodine number of 60.11 mg Iodine/g sample, and cetane number of 68.83. GCMS test on the biodiesel composition indicated the presence of 0.798% of methyl laurate (C13H26O2), 44.527% of methyl palmitate (C17H34O2), 4.584% of methyl linoleic (C19H34O2), 46.506% of methyl oleic (C19H36O2) and 3.584% of methyl stearic (C19H36O2).

scholarly journals KAOLINITE MODIFIED BY ALUMINUM IN THE CRACKING OF VACUUM GASOIL AND IT’S MIXTURE WITH FUEL OIL

2020 ◽  
Vol 2 (440) ◽  
pp. 107-114
Author(s):  
L.D. Volkova ◽  
N.N. Zakarina ◽  
O.K. Kim ◽  
A.K. Akurpekova ◽  
D.A. Zhumadullaev ◽  
...  
Keyword(s):  
Aromatic Hydrocarbons ◽  
Catalytic Cracking ◽  
Zeolite Catalyst ◽  
Vacuum Gasoil ◽  
Fuel Oil ◽  
Vacuum Gas Oil ◽  
Gas Oil ◽  
Light Gas Oil ◽  
Oil Fuel ◽  
Zeolite Modification

The data of the cracking of vacuum gas oil (VG) and a mixture of VG with fuel oil (M-100) on HLaY zeolite catalyst based on acid-activated kaolinite of the Pavlodar deposit modified by aluminum are presented. The synthesis of the kaolinite matrix and the HLaY zeolite catalyst with its use, the physicochemical and acid characteristics of the catalyst and its constituent components, and the fractional and hydrocarbon compositions of vacuum gas oil are described. High mesoporosity of the H-form of the used kaolinite (86.2%), modified by aluminum of the H-form (84.1) and the HLaY catalyst (80.1%), which provide the activity of the sample in cracking of the mixture with a yield of 32.6% gasoline and 25.9% light gas oil (LG) at 4500С and in cracking of VG a yield of 38.2% gasoline and 29.4% LG at 5000С. The gasolines of cracking of LG contain an increased content of iso paraffins (up to 20.2%) and a low content of aromatic hydrocarbons (24.1%), which makes the catalyst attractive for cracking a mixture of VG with fuel oil. Key words: catalytic cracking, kaolinite, vacuum gas oil, fuel oil, zeolite, modification.

Five-Lump Kinetic Model for the Catalytic Cracking Process\

2018 ◽  
Vol 69 (10) ◽  
pp. 2633-2637
Author(s):  
Raluca Dragomir ◽  
Paul Rosca ◽  
Cristina Popa
Keyword(s):  
Kinetic Model ◽  
Programming Language ◽  
Catalytic Cracking ◽  
Computational Method ◽  
Industrial Data ◽  
New Model ◽  
Optimization And Control ◽  
Cracking Process ◽  
And Control ◽  
Matlab Programming

The main objectives of the present paper are to adaptation the five-kinetic model of the catalytic cracking process and simulation the riser to predicts the FCC products yields when one of the major input variable of the process is change. The simulation and adaptation are based on the industrial data from Romanian refinery. The adaptation is realize using a computational method from Optimization Toolbox from Matlab programming language. The new model can be used for optimization and control of FCC riser.

Combined mild hydrocracking and fluid catalytic cracking process for efficient conversion of light cycle oil into high-quality gasoline

Fuel ◽  
2021 ◽  
Vol 292 ◽  
pp. 120364
Author(s):  
Peipei Miao ◽  
Xiaolin Zhu ◽  
Yangling Guo ◽  
Jie Miao ◽  
Mengyun Yu ◽  
...  
Keyword(s):  
Catalytic Cracking ◽  
Fluid Catalytic Cracking ◽  
Light Cycle ◽  
High Quality ◽  
Light Cycle Oil ◽  
Efficient Conversion ◽  
Cycle Oil ◽  
Cracking Process

scholarly journals Role of Catalyst in Optimizing Fluid Catalytic Cracking Performance During Cracking of H-Oil-Derived Gas Oils

ACS Omega ◽  
2021 ◽  
Author(s):  
Dicho Stratiev ◽  
Ivelina Shishkova ◽  
Mihail Ivanov ◽  
Rosen Dinkov ◽  
Borislav Georgiev ◽  
...  
Keyword(s):  
Catalytic Cracking ◽  
Fluid Catalytic Cracking ◽  
Cracking Performance
Sign in / Sign up

Export Citation Format

Share Document