Temperature control method for slurry bed reactor, design method and application thereof

Abstract

The invention provides a temperature control method for a slurry bed reactor, a design method and the application thereof. The method comprises the step of injecting a coolant in pipes in front of the inlets of a reactors at all levels. The pipes are connected with at least one coolant pipeline to realize the temperature control. The coolant is composed of cold hydrogen and cold oil. According to the method, the method can be applied to reactors during the heavy oil hydrodesulfurization process, the direct coal liquefaction process and the oil-coal mixing process. Through adjusting the number of coolant pipelines and the flow of the coolant, the reaction temperature of the reactor can be controlled. The method is easy to realize during the project implementation process, and facilitates the automatic control. Meanwhile, the operation stability of the reactor is improved. Cold hydrogen and cold oil are necessary raw materials for the reaction, and the forestage reaction heat of the reactor is fully utilized. Therefore, the efficient utilization of heat is realized. The method is especially suitable for second-stage reactors and third-stage reactors. For first-stage reactors, the temperature control effect can still be realized through respectively heating two ways of hydrogen and then mixing up the two ways of hydrogen.

Description

technical field [0001] The invention relates to a temperature control method and application of a slurry bed reactor, belonging to the fields of petrochemical and coal chemical industries. Background technique [0002] In recent years, the world's oil resources have become increasingly scarce, and the problem of heavy and inferior oil resources has become more and more obvious. However, with the rapid economic growth, the society's demand for oil products is increasing day by day. In this realistic environment, heavy oil hydrogenation technology, direct coal liquefaction technology and coal mixing technology are getting more and more attention. Heavy oil hydrogenation technology can not only effectively utilize petroleum resources, but also improve the economic benefits of petroleum processing enterprises. At present, heavy oil processing mainly includes delayed coking, heavy oil catalytic cracking and residual oil hydrogenation. The quality of the liquid product from the ...

AI Technical Summary

Problems solved by technology

This method reduces the openings on the pipeline and reduces the possibility of leakage, but adding coolant directly to the reactor will destroy the reaction balance, resulting in different reaction progress and density in different parts of the reactor, and then form a vortex flow, which will not It is conducive to the progress of the reaction, and if the coolant is not selected properly, a large number of by-products will be produced, which may corrode the entire system

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