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Working solution pre-heating device

A technology of preheating device and working fluid, applied in inorganic chemistry, non-metallic elements, chemical instruments and methods, etc., can solve problems such as energy consumption and increase production cost, and achieve the effect of reducing production cost and energy consumption.

Inactive Publication Date: 2012-10-31
QIANJINAG YIHE CHEM PROD
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Problems solved by technology

However, on the one hand, the temperature of the working fluid coming out of the extraction tower is about 54 degrees, and then the temperature drops to about 45 degrees after passing through the extraction separator, working fluid metering tank, drying tower, alkali sedimentation and other equipment. A better and more sufficient regeneration reaction in the bed requires a working fluid heating device to increase the temperature to about 55 degrees. Generally, the working fluid is heated by steam, which consumes a lot of energy and increases the production cost. figure 1 shown

Method used

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Embodiment Construction

[0008] Combining the working fluid heating device and hydrogenation liquid cooling device into one, sharing a working fluid preheater and removing the steam heater, such as image 3 shown. Input the 65-degree high-temperature hydrogenated liquid into the working fluid preheater, heat the working liquid to 55 degrees, and meet the 55-degree temperature requirement for the working liquid to enter the clay bed; at this time, the hydrogenated liquid is also reduced from 65 degrees to 55 degrees After being further cooled to 45 degrees by the cooler, it enters the oxidation tower to react with air.

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Abstract

The invention discloses a working solution pre-heating device. The working solution pre-heating device is characterized in that a working solution heating device and a hydrogenated liquid cooling device are combined into a whole and share one working solution pre-heater, a steam heater is omitted, and the working solution heating device is shown in a figure 3. Oxidant solution with the temperature of 65 DEG C is input into the working solution heating device for heating the working solution to 55 DEG C to meet the requirement on the temperature of 55 DEG C which is required for enabling the working solution to flow into a carclazyte bed; and the oxidant solution is reduced from 65 DEG C to 55 DEG C or so and further cooled to 45 DEG C by a cooler and flows into an oxidizing tower to react with the air. By the working solution pre-heating device, a steam heating step in the independent working fluid heating device is eliminated, the consumption of a large amount of energy sources is reduced, and the production cost is reduced.

Description

technical field [0001] The invention relates to a working liquid preheating device in the process of producing hydrogen peroxide by an anthraquinone method. Background technique [0002] At present, in the process of producing hydrogen peroxide (H2O2, also known as hydrogen peroxide) by anthraquinone method, the temperature of the working liquid entering the clay bed is preferably 55 degrees, and the temperature of the hydrogenation liquid before entering the oxidation tower is preferably controlled at 45 degrees. However, on the one hand, the temperature of the working fluid coming out of the extraction tower is about 54 degrees, and then the temperature drops to about 45 degrees after passing through the extraction separator, working fluid metering tank, drying tower, alkali sedimentation and other equipment. A better and more sufficient regeneration reaction in the bed requires a working fluid heating device to increase the temperature to about 55 degrees. Generally, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B15/023
Inventor 杨博
Owner QIANJINAG YIHE CHEM PROD
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