Power-saving type oxyanthraquinone production device

Abstract

The invention discloses a power-saving type oxyanthraquinone production device, and relates to the technical field of production device for producing anthraquinone by adopting anthracene as raw material and through air oxidation. The production device comprises an anthracene melting kettle, an anthracene vaporization kettle, a mixer, an oxygenizer, a flame arrester and a condensation box which are successively in series connection through pipelines; an inlet end of the mixer is further connected with a hot blast furnace, and the inlet end of an air heat exchanger of the hot blast furnace is connected on an air outlet of a Roots blower which adopts a frequency converter and a variable frequency motor as power sources. The power-saving type oxyanthraquinone production device aims at the defects existing in a conventional industry oxyanthraquinone device, adopts the frequency converter and the variable frequency motor to drive the Roots blower, can adjust air quantity according to technological requirements, saves electric energy, and allows the power consumption to be saved by 35% than the original device when the power-saving type oxidization anthraquinone device is used for producing each ton of anthraquinone.

Description

technical field [0001] The invention relates to the technical field of a production device for producing anthraquinone by air oxidation using anthracene as a raw material. Background technique [0002] The production of dye intermediate anthraquinone (commonly known as: oxidized anthraquinone, to distinguish it from synthetic anthraquinone) by air oxidation with anthracene as raw material has a history of decades in our country. The main process is as follows: ≥90% of anthracene is put into the melting anthracene kettle to heat and melt, and pumped into the vaporization kettle with a submerged pump, and the liquid anthracene in the vaporization kettle is kept at 260-270°C, and then 0.03Mpa superheated steam is passed into the vaporization kettle to vaporize anthracene , into the mixer, mixed with hot air ≥ 250°C, and then enters the fixed-bed oxidizer equipped with alum catalyst to oxidize anthracene to anthraquinone. The by-products of oxidation are phthalic anhydride or c...

AI Technical Summary

Problems solved by technology

[0004] The shortcomings of the above three control methods are: 1. In the process of manual operation and regulation, it is difficult to accurately control the reaction temperature. The result of multi-element balance, such as heat and heat removed by the salt bath, especially the change of reaction temperature will bring about the change of oxidation reaction speed and the change of reaction heat. If the side reaction increases, the reaction heat will be released in large quantities, and the reaction temperature will be higher Difficult to master

2. Due to the periodic activation of the catalyst, a large air volume is required, so the air volume configuration of the Roots blower is relatively high, and the air supply volume during normal production is about 2 / 3 of the rated air volume, and the remaining 1 / 3 of the air volume is exhausted by the buffer tank Empty, resulting in a large waste of power

3. The heat of oxidation reaction adopts molten salt circulation, and dissipates heat to the environment through the pipeline molten salt storage tank, and a large amount of reaction heat energy is not utilized

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