May I ask whether that refinery uses vacuum residue or visbreaking residue as fuel for its furnaces? ?
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May I ask whether that refinery uses vacuum residue or visbreaking residue as fuel for its furnaces? ?
When the steam output of our company’s boilers is insufficient, we use residue oil for heating; under normal conditions, we use gas and coal. Using residue oil is not economical, as the price of coal is much lower. The cost of producing one kilogram of steam using coal is higher than that of using residue oil. Therefore, we generally use coal to produce steam. Is there any problem with that? ? This post was last edited by bingyu252 on 2008-1-4 15:37.]
My contact is sdkjwam@163.com
Our atmospheric and vacuum distillation units burn residue, as do many other facilities. However, residue burning is now rare, mainly due to environmental concerns. When we process high-sulfur crude oil, the sulfur content in the residue can exceed 4%, so this practice is not encouraged; nowadays, desulfurized gas is primarily used for combustion.
In enterprises that do not have advanced processing facilities such as catalysis or hydrocracking, the fuel oil used in atmospheric and vacuum distillation units is usually vacuum residue, primarily due to cost considerations. With the advanced processing equipment in place, it is possible to switch to using dry gas and waste oils (such as oil slurry, coker wax oil, oily wastewater, etc.). When burning vacuum residue oil, pay attention to the nozzle design to ensure good atomization.
Under normal conditions, the atmospheric and vacuum distillation furnace in our plant uses gas as fuel; in special cases, it burns vacuum residue； Under normal conditions, steam boilers are fueled by gas as a backup; they can also use a mixture of reduced residue oil and cracked slurry oil as fuel.
Our factory no longer burns residue oil either. Because the cost of residue oil is too high now. Regular slag can be fed into the Cui process, while reduced slag can be used to produce asphalt. The prices are all very high. Moreover, the viscosity of reduced-viscosity residue is too high to be burned. Currently, our factory uses coal tar for burning. It’s very cheap, and it’s also environmentally friendly. Next is Cuihua dry gas, which is the most economical. Because it is taken to the torch for disposal; we use it for heating, which constitutes resource recycling. But it is indeed necessary to have a device for producing dry gas.
Which friend can tell me what kind of oil is most economical and effective for use as a combustion aid when lighting up a clinker rotary kiln? Thank you
Our atmospheric and vacuum distillation furnaces burn some residue
Our polyester heat transfer furnace is used to burn viscosified residue oil; it is a top-firing furnace with only one burner. Switching to gas fuel cannot increase the heating capacity, so currently it can only burn viscosified residue oil, which causes significant air pollution.
The use of such residue as fuel should be considered from economic, practical, and operational perspectives. When the density of the crude oil being processed is not very high and there is a shortage of gas or natural gas, vacuum residue is usually used directly as fuel. If the density of the crude oil is high, such as in the case of Liaohe oil, and there is a lack of gas or natural gas, visbreaking residue is generally used as fuel, as vacuum residue has too high a viscosity and tends to coking!
The atmospheric and vacuum distillation unit uses residue oil in its furnaces; during catalyst startup, gas is used as fuel. Since the boiler also operates, we maintain the boiler in operation, while the atmospheric and vacuum distillation section uses gas as fuel.
Our atmospheric and vacuum distillation units are designed to reduce viscosity and sludge, but now we have switched to using the dry gas produced as a by-product of the catalytic unit
The two heaters in our atmospheric and vacuum distillation unit primarily use vacuum residue as fuel, supplemented by overhead gas and catalytic dry gas.
Our facility’s furnace uses reduced-pressure residue oil. Does the original poster have any issues they’d like to discuss?
Residue can now be used as a feedstock for coking; it’s best not to burn it and waste it