Industrial naphthalene oil-gas cooling process and system producing byproduct steam

Abstract

The invention relates to an industrial naphthalene oil-gas cooling process and system producing byproduct steam. The system comprises an oil-gas condenser, a pressurized rectifying column, a primary distillation column, an industrial naphthalene condensation cooler, a steam distributor, a boiler water tank and a reflux tank. A normal-pressure rectifying column of a normal-pressure double-furnace double-column distillation process is changed into the pressurized rectifying column, and most of heat left after heat exchange between industrial naphthalene oil gas and raw materials can be recycledand converted into steam to be sent out.

Description

technical field [0001] The invention relates to the technical field of coking, in particular to an industrial naphthalene oil gas cooling process and system for by-product steam. Background technique [0002] At present, the large-scale production of industrial naphthalene in the coking industry mostly adopts the continuous distillation method of tubular furnace. It refers to the normal pressure double furnace and double tower process. The single furnace double tower process is divided into the decompression single furnace double tower process and the pressurized single furnace double tower process. The single furnace single tower process refers to the atmospheric pressure single furnace single tower process. [0003] The main equipment of the double furnace and double tower process at atmospheric pressure is composed of two distillation towers and two heating furnaces. The two distillation towers are operated under normal pressure conditions, that is, the phenol oil is cut ...

AI Technical Summary

Problems solved by technology

Industrial naphthalene vaporization coolers 1-3 have received feedback from field use that the amount of cooling water is relatively large; in addition, the water supply of the lower heat exchanger is closed-loop, without water and liquid level detection methods, and it is difficult to find out after water shortage, and long-term circulation is prone to fouling and blockage equipment, causing the system to fail to produce normally

The industrial naphthalene vaporization cooler is a very important process equipment in this process system. Its operation stability directly affects the normal production of the system, and it also consumes a large amount of cooling water, which makes most of the heat wasted.

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