Double symmetrical shell and tube sulfuric acid cooler

A shell-and-tube, double-symmetrical technology is used in the field of heat exchangers for heat recovery in the cooling process of high-temperature concentrated sulfuric acid, which can solve the problems of inability to detect and leak in time for sulfuric acid coolers
CN103836602BActive Publication Date: 2016-03-02丁华
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
丁华
Publication Date
2016-03-02

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Abstract

The invention discloses a double-symmetrical-tube-shell type sulfuric acid cooler, and relates to a heat exchanging device for recovering heat in the high-temperature concentrated sulfuric acid cooling process. The double-symmetrical-tube-shell type sulfuric acid cooler comprises two completely-symmetrical and completely-same tube-shell type heat exchanging sections and structurally comprises an acid inlet tube box, the heat exchanging section A, an acid connecting tube box, the heat exchanging section B, an acid outlet tube box and a connecting water tube or steam pocket. If the shell sides of the two heat exchanging sections are connected with the steam pocket, a steam generator is formed, and if the shell sides of the two heat exchanging sections are connected through a tube, a water heater is formed. The temperature values of an acid inlet and an acid outlet and the temperature value of acid in the connecting tube box are measured online, meanwhile, the temperature value of saturated steam or the temperature values of a water inlet and a water outlet and the temperature value of water in the connecting water tube are measured, and the characteristic ratio of the sulfuric acid cooler is calculated through the temperature values. Once leakage occurs, the practical value of the characteristic ratio can be remarkably changed, and therefore the leakage can be monitored.
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Description

Technical field:

[0001] The invention relates to the technical category of heat exchange equipment in chemical plants, in particular to a heat exchanger for heat recovery in the cooling process of high-temperature concentrated sulfuric acid. Background technique:

[0002] Sulfuric acid is formed by the combination of sulfur trioxide and water. Since this reaction is a very violent exothermic reaction, concentrated sulfuric acid at a temperature of about 80°C is used to absorb sulfur trioxide in the gas during the production of sulfuric acid. The absorption process produces Due to the low temperature of the circulating acid, the heat has no use value, and usually can only be cooled by circulating cooling water to discharge the heat to the atmosphere.

[0003] To recover and utilize this heat to generate steam or heat boiler feed water to achieve the purpose of waste heat recovery and utilization, it is necessary to increase the temperature of the circulating acid. The curren...

Claims

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