Hot Steam-air decoking (HSAD) in Ilam Petrochemical Olefin Plant (ILPC) leads to decreased particulate waste inventory, increased operating rates, extended furnace life & run length time, elimination of carbon monoxide, minimize decoking time and maximize coke removal

Mehdi yosefinejad¹ Keyvan mokhtari² Arash shouhani³ Mohamad nouri⁴ Mohamad reza abbasi⁵

Abstract :
Coke deposition occurs in refinery and petrochemical processes such as pyrolysis and cracking. In large gas-fired furnaces hydrocarbons are in contact with the internal walls of coils at high temperature. Coking involves the massive accumulation of carbon on the internal surface of the coils, increasing the pressure drop through the coils and reducing the efficiency of heat transfer between the reactor and firebox. Consequently, the coils must be regularly decoked, a process in which the deposited coke layer is burned off using a mixture of air and steam. An example decoking process is steam‐air decoking. In hot steam‐air decoking (HASD), low pressure steam and air are introduced into the furnace. Oxygen from the air reacts with the carbon deposits on the interior surfaces of the furnace tubes to form carbon dioxide gas, which is exhausted from the furnace, typically, to atmosphere. In Ilam Petrochemical Olefin Plant, the exhaust of hot steam‐air decoking operation routed to the cracking furnace firebox where cock particles and carbon monoxide converted to carbon dioxide by contact with high temperature of burners flame which is have very importance from an environmental point of view. This method does not need to shut down the furnace and the heat of combustion of cock particles produce very high pressure steam(VHP) which optimize energy consumption in the cracking furnace. Hot steam-air decoking (HASD) leads to less frequent need for de-coking cycles, decreased particulate waste inventory, increased operating rates, higher product yield, extended furnace life and lower maintenance costs.

Keywords : hot steam air decoking (hsad) olefin cracking furnace pyrolysis coil coke cot

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زبان مقاله : انگلیسی
محور مقاله : علوم مهندسی
محل انتشار : سومین کنگره بین المللی علوم، مهندسی و تکنولوژی - هامبورگ
آدرس وب سایت کنفرانس : germanconf.com
کد IOI مقاله : XCZE-EEBBE
لینک مستقیم مقاله : https://isnac.ir/XCZE-EEBBE
نمایش چکیده فارسی : https://isnac.ir/SA/XCZE-EEBBE

سایر مقالات ارائه دهنده

1. Hot Steam-air decoking (HSAD) in Ilam Petrochemical Olefin Plant (ILPC) leads to decreased particulate waste inventory, increased operating rates, extended furnace life & run length time, elimination of carbon monoxide, minimize decoking time and maximize coke removal
2. Olefin cracking furnace, different design, radiant coil arrangement and their effects on production yield, coil outlet temperature(COT), residence time and product distribution
3. Transfer Line Exchangers (TLX) in olefin cracking furnaces: reliability, different design combinations and cock formation
4. Ethylene cracking furnace from light to heavy feedstocks: cracking condition, production yield, coke formation, severity and products distribution
5. Polymer and red oil formation in caustic wash tower of olefin plants: mechanism and affecting’s factors
6. Cracked Gas Compressor(CGC) fouling, anti-fouling technologies and treating process to prevent fouling
7. Centrifugal Compressors in Ethylene Plants: Cracked Gas Compressor(CGC), C2, C3 and Mixed Refrigeration cycles(MRC)
8. Wet Air Oxidation(WAO): solution for Thermal Cracking Olefin Plant’s Spent caustic
9. Spent Caustic Treatment (SCT) in Thermal Cracking Olefin Plant
10. Zeolite based dryers in the production of ethylene by thermal steam cracking in olefin plant

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