Skid-mounted decompression system

Abstract

The invention belongs to the technical field of coal chemical industry and petrochemical industry equipment, and specifically relates to a skid-mounted decompression system. The system is applied to coal chemical industry and petrochemical industry equipment, wherein the decompression system comprises a main process module, a mechanical control system, a thermodynamic balance system and an intelligent control system. A process medium enters the main process module, then the mechanical control system outputs torques under instructions of the intelligent control system, and opening-closing and opening degree of each valve of the main process module are regulated, so that the decompression of the process medium is realized, and then the process medium flows out from the decompression system.The provided thermodynamic balance scheme can effectively reduce thermal stress of the apparatus in a use process, and reduce risks of valve cracking and clamping stagnation and the like in the main process module. The decompression system is high in automation degree, strong in safety and reliability, and convenient in maintenance.

Description

technical field [0001] The invention belongs to the technical field of coal chemical and petrochemical equipment, and in particular relates to a skid-mounted decompression system. Background technique [0002] In recent years, crude oil products at home and abroad have become increasingly harsh, while the market demand for light and clean fuel oil has continued to increase. Therefore, while continuously promoting the transformation and upgrading of the refining industry and upgrading the quality of refined oil, some countries are vigorously promoting clean and efficient coal. Use to promote the technology research and development of coal-to-gas and coal-to-oil. Among them, high-efficiency energy development processes such as direct coal-to-oil production, kerosene mixing, coal tar hydrogenation, and residual oil / heavy oil hydrogenation, with non-fixed bed (suspended bed / ebullating bed, etc.) hydrogenation reactors as the core devices, are receiving more and more attention m...

AI Technical Summary

Problems solved by technology

[0006] However, for the decompression system at the bottom of the hot high-pressure separator of the suspended bed or ebullated bed hydrogenation device currently under construction or already in operation, since the feed of the suspended bed or ebullated bed is heavy oil (coal tar, atmospheric residue, vacuum residue oil, catalytic oil slurry, fuel oil, etc.) and additives, or a mixture of heavy oil and coal powder (coal oil slurry), the pressure reducing valve group of the high temperature to low temperature is high temperature, high pressure difference, high solid content It is easy to be damaged by erosion and abrasion, and there are different degrees of wear problems. It takes a few hours and a few months to switch overhauls. The operation is difficult, the maintenance costs are high, the safety hazard is large, and it runs smoothly. Disaster

Images