Hydrogenation reaction effluent air cooler tube bundle system used for chlorine-containing raw oil production

Abstract

The invention discloses a pipe bunch system of a hydrogenation reaction effluence air cooler applied in chlorine raw oil processing, which comprises four channel boxes and six tube grid pipe bundles. The channel boxes comprise outer side pipes and inner side pipes. The outlet of a first channel box is communicated with the inlet of a second channel box by a first tube grid pipe bunch and a second tube grid pipe bunch. The outlet of the second channel box is communicated with the inlet of a third channel box by a third tube grid pipe bunch and a fourth tube grid pipe bundle. The outlet of the third channel box is communicated with the inlet of a fourth channel box by a fifth tube grid pipe bundle and a sixth tube grid pipe bundle. Two rows of pipe bundles in a first tube pass adopt clad pipes, which avoids under-deposit corrosion of NH<4>Cl crystal deposition or local erosion caused by under-deposit corrosion in cooling process. As liquid water quantity is added, a second tube pass and a third tube pass adopt carbon steel pipe bundles, which can reduce the manufacturing cost of the REAC system. The inlet water of the reaction effluence flows into the first channel box horizontally and the outlet water of the reaction effluence flows out of the fourth channel box horizontally, thus avoiding uneven distribution of oil, air and water in the upper row of pipe bundle and the lower row of pipe bundle. The invention can increase safe operation cycle and the economic benefit of the hydrogenation REAC system.

Description

technical field [0001] The invention relates to the system structure of hydrocracking reaction effluent used in the petrochemical industry, in particular to a hydrogenation reaction effluent air cooler tube bundle system used in the processing of chlorine-containing raw material oil. Background technique [0002] Energy is the foundation of social and economic development, among which the petrochemical industry, as an important support of my country's energy industry, is one of the important ways to ensure the safe supply of energy and effectively solve the energy shortage. The hydrocracking reaction effluent air cooler (Reactor effluent air coolers, referred to as REAC) system is the core equipment of the low-quality oil cleaning and heavy oil lightening equipment. It is a special equipment that can withstand high pressure and hydrogen for a long time. The thickness of the pipe wall is only 3mm, and it is subject to the combined effects of various corrosions. It is easy to ...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a hydrogenation reaction effluent air cooler tube bundle system applied to the processing of chlorine-containing raw oil, which can effectively solve the problems of under-scaling corrosion and multi-layer ammonium salt crystal deposition in the tube bundle of REAC system during the processing of chlorine-containing and high-sulfur crude oil. Frequent failure problems such as phase flow erosion

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