Effect of catalyst on the pyrolysis of used oil carried out in a fractionating pyrolysis reactor

Optimizing the Production of Renewable Aromatics via Crop Oil Catalytic Cracking

“…In their work they found that HZSM-5 > Silicalite > H-Y > Silica-aluminum > H-mordenite > Aluminum-pill-Caly for the catalytic cracking of canola oil [6]. Among the various catalysts studied, HZSM-5 yielded the highest fraction of aromatics from crop oil [7,8].…”

Diesel-like hydrocarbon fuels by catalytic cracking of fat, oils, and grease (FOG) from grease traps

“…Application of pyrolysis includes used sunflower oil [18], waste fish oil [19,20], waste frying oil [21,22], and industrial fatty wastes [23]. The catalytic cracking of low quality lipid material includes fats, oils, and grease (FOG) [17], frying oil [24], used sunflower oil [25], used palm oil and palm oil fatty acid mixture [26e31], used vegetable oil [32], fatty acids and animal fats [33e37], meat and bone meal [38], and the residues of rendering plants [39].…”

“…with an acid value of 94.18 mg KOH/g. Dandik and Aksoy investigated the pyrolysis of used sunflower oil, as well as the effect of catalyst on the catalytic cracking of used sunflower oil with Na 2 CO 3 [18,25]. The experiments were carried out using a laboratory scale reactor (ID ¼ 45 mm, L ¼ 210 mm, V R ¼ 334 cm 3 ), coupled to fractionation columns of different heights (ID ¼ 45 mm, L1 ¼ 180 mm, L2 ¼ 360 mm, and L3 ¼ 540 mm).…”

Production of vegetable oil-based biofuels—Thermochemical behavior of fatty acid sodium salts during pyrolysis

“…Using, for example, sodium or calcium hydroxide, this treatment also facilitates to some extent the pyrolytic process, since the thermal cracking of vegetable oils as such (i.e., not as soap), compared to that of metal fatty acid salts, is much more difficult to control. It should be pointed out that pyrolysis of unsaponified vegetable oils produces not only the desirable linear or cyclic paraffins and olefins but also inconvenient oxygenated compounds such as aldehydes, ketones, and carboxylic acids [21][22][23]. In contrast, pyrolysates of saponified vegetable oils compared, for example, to neat triglycerides seem to contain less chemically bound oxygen.…”