Large ammonification high pressure spherical stirring reaction kettle

Abstract

The invention relates to a large ammonification high pressure spherical stirring reaction kettle. A kettle body is welded by two spherical shaped kettles, the upper portion of the kettle body is provided with a feeding port, a discharging port, a safety relief device and an instrument control device, and the lower portion of the kettle body is provide with a skirt support. A stirring device is arranged at the upper end of the kettle body and matched with the kettle body in sealed mode, a motor, a reducer and the stirring device and sequentially connected, the lower portion of a stirring shaft penetrates into the kettle body, and a stirring device is fixed on the stirring shaft. A discharge pipe extends the a center position of the lower portion of the kettle body along the inner wall of the kettle body, a heat exchange device is arranged in the kettle body, the kettle body is made of an explosion double-layer composite plate material, an inner layer is made of stainless steel, an outer layer is made of carbon steel, the stirring shaft and the stirring device which are arranged in the kettle are made of stainless steel, and the heat exchange device is made of titaniumtim. The large ammonification high pressure spherical stirring reaction kettle has the advantages of guaranteeing energy conservation and consumption reduction, heat-transfer capability, homogeneity capability, antiseptic property and product quality of ammonification high pressure spherical stirring reaction kettle along with the enlargement of volume of the reaction kettle.

Description

technical field [0001] The invention relates to a chemical reaction vessel, in particular to a large-scale ammoniated high-pressure spherical stirring reaction kettle with stirring reaction, which is suitable for high temperature and high pressure conditions and has excellent high mass transfer and high heat transfer capabilities. Background technique [0002] p-(o)nitroaniline is an important organic chemical intermediate, mainly used in the fields of pesticides, dyes, additives and photosensitive materials, etc. Preparation, the core equipment for the ammoniation reaction in this method - the ammoniation high-pressure stirred reaction kettle is the key equipment for the production of p-(o) nitroaniline. The ammoniation reaction is a high-temperature, high-pressure reaction, and the reaction temperature in the kettle is 170 ° C ~ 210°C, the pressure is between 5.0 and 6.8 MPa. [0003] At present, the volume of the high-pressure reactor for the amination of p-(o)nitrobenze...

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Problems solved by technology

[0006] The purpose of the present invention is to aim at the current large-scale ammoniation high-pressure reactor equipment, resulting in increased manufacturing costs, inconvenient maintenance, poor heat transfer effect, reduced heat transfer efficiency, difficult control of reactor pressure, and prone to safety accidents , and at the same time have adverse effects on the ammoniation reaction, a large-scale ammoniation high-pressure spherical stirred reactor is provided

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