Study on pyrolysis of oil sludge with microalgae residue additive

Abstract

The pyrolysis of oil sludge (OS) with microalgae residue (MR) additive was conducted with a TGA and a tube furnace. The pyrolysis process of OS with the MR additive can be divided into three stages: 1) water evaporation, 2) the release of light groups of hydrocarbon compounds, the cracking of heavy groups, and carbon decomposition, and 3) minerals decomposition. With the MR addition ratio increasing, the yield of oil and gas increased, and oil to gas ratio increased during OS pyrolysis. The MR addition improved the quality of pyrolysis oil and gas from OS pyrolysis. The proportion of light oil increased from 38 % with a 5 % MR addition ratio to 45 % with a 30 % addition ratio. Major components of pyrolysis gas included H 2 , CO, CO 2 , and C x H y . With the increase of the MR blending ratio, CO and CO 2 contents increased, while H 2 and C x H y contents decreased. Adding MR favoured the transformation of heavy hydrocarbons (C 6þ ), resulting in a high content of light hydrocarbons. This work can help promote massive synergistic treatment of OS and microalgae biomass.

Conversion of plastic waste into fuel oil using zeolite catalysts in a bench-scale pyrolysis reactor

“…The feed to catalyst (10 : 1) ratio was used for all the experiments with a retention time of 90 min and a temperature range of 450–500 °C. 33,34 The resultant product yield (oil, char, and gas) in wt% was quantified gravimetrically at the end of each experiment. The chemical characterization of the oil products was analyzed by GC-MS (Gas Chromatography-Mass Spectrometry).…”

“…16,26 To date, very few studies have been published comparing the use of these catalysts for real plastic waste and its impact on product distribution. 32–34 Besides, these studies have been carried out with real plastic waste with a catalyst such as red mud and zeolite. 20…”

Application and development of pyrolysis technology in petroleum oily sludge treatment

“…The gases produced during pyrolysis mainly consist of H 2 , CO, CO 2 , CH 4 and some short-chain hydrocarbons. For liquid oil, the main components include alkanes, olefin, aromatic hydrocarbons, heavy oxygen hydrocarbons and substituted aromatic hydrocarbons [117,118].…”

Effect of Dissolution of Extracted Hydrocarbons of Oily Sludge on Petroleum Products

“…Separation and removal of hydrocarbons from contaminated soils and petroleum sludge are the purposes of many studies [2][3][4][5][6]. A common method is the extraction of hydrocarbons by mixing organic solvents with oily sludge.…”