Improvement of C5Cut Inappropriate Quality; Jam Specialists effort for More Productivity

Improvement of C5Cut Inappropriate Quality; Jam Specialists effort for More Productivity
Experts at Jam Petrochemical Company succeeded in improving the inadequate quality of C5Cut feed and producing high value-added products to increase the efficiency of the Olefin unit.

Public Relations and International Affairs of Jam Petrochemical Company reported that the Olefin unit is the large and active unit in this industrial company located in the South Pars Special Economic Zone in Asaluyeh. This unit produces Ethylene, Propylene, Pyrolysis Gasoline, CFO, and C4 compounds. According to Mehdi Seifollahi, sub principal of Process Engineering, Production Control and Energy unit, Pyrolysis Gasoline is one of the byproducts of this unit produced about 30 to 38 tons per hour and transport to Nouri Petrochemical Company to extracting aromatics including benzene, toluene, and xylene. After the process of aromatics extraction, the remainder of this material called C5Cut returned to the Jam Petrochemical Company that this feed mixed with other feeds from the company to incorporate into the olefin liquid furnaces.

According to him, more than 60% of C5Cut feeds transport by Nouri are olefinic compounds. Based on these designs, after the entrance of olefinic compounds into the cracking furnaces, most of the materials are converted to Tar, coke, or CFO with very low added-value. The specialists in the Olefin unit planned to design a project for the hydrogenation of compounds and shift from olefinic to parafinic and iso-paraffinic compounds. So they can produce high value-added products such as ethylene and propylene.

Mehdi Seifollahi added: "The R-681 reactor of olefin unit, the only reactor in Jam Petrochemical Company hydrogenates the imported compounds fully but was unable to transport C5Cut directly to the reactor because of the high pressure." This reactor is intended to hydrogenate the produced C4cut stream and feed the unsaturated C4 back to the furnaces. Based on the design of the olefin unit, the butadiene input to the reactor R-681 is approximately 41% when the BD unit is not in service. Thus, once the BD unit is in service and after the separation of the butadiene compound, the BD-free refinite stream enters the reactor to return to liquid furnaces after the hydrogenation of other unsaturated compounds 

It should be noted that the hydrogenation of this feed converts the existing olefinic and diolefinic compounds into paraffinic and isoparaffinic compounds, which is associated with increased productivity and production of high value-added products per olefin unit. On the other hand, the reduction of these compounds is associated with reduced coke formation in furnaces and improvement of operating conditions and operating times of the furnaces. Initial designs utilize SPYRO software to build up to 5,000 tons of ethylene and 2,500 tons of propylene annually if 7 tons of C5Cut feeds are fully hydrogenated.

Jan 26, 2020 22:23
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