关键词: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">蜡油加氢装置, 反应炉, 熄灭, 热量平衡, 蒸汽, 工艺流程, 精制油硫含量, 运行维护

Abstract: Tianjin Petrochemical's 1.3 MTPY wax oil hydrocracking unit started construction in 2007 and was successfully started up in December 2009. In 2016, the fractionation tower was shut down and the fractionation furnace was extinguished. Extinguishing the reaction furnace is a symbol of efficient operation of the hydrocracking unit, which is not only a reflection of energy conservation but also a technological advancement. At the beginning of 2024, it was planned to extinguish the reaction furnace. After extinguishing the reaction furnace, due to the fact that the self-produced 1.0 MPa steam did not reach the superheated state and could not be directly integrated into the 1.0 MPa steam pipeline network, and the hydrogen sulfide stripping tower used superheated steam for stripping, it was necessary to send the self-produced 1.0 MPa steam to the 0.45 MPa steam pipeline network. Therefore, a new process flow of self-produced 1.0 MPa steam to the 0.45 MPa steam pipeline network was added. The 1.3 MTPY wax oil hydrocracking unit can reduce fuel gas consumption by 400 m3/h after extinguishing the reaction furnace, achieving an annual efficiency increase of 11 million yuan. Before extinguishing the reaction furnace, it is necessary to conduct feedstock analysis and heat calculation. Attention should be paid to maintenance after extinguishing the reaction furnace to achieve high-quality extinguishing of the reaction furnace.

Key words: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">wax oil hydrocracking unit, reaction furnace, extinguishing, heat balance, steam, technological processes, refined oil sulfur content, operation and maintenance