radial air cooled reactor

Abstract

A radial gas cooled reactor comprises an outer cylinder, a gas cooling system, a radical reaction basket and a first gas collecting tube, the radial reaction basket is arranged in the outer cylinder, a gap is formed between the outer cylinder and the radial reaction basket, the gas cooling system comprises a gas inlet tube, gas cooling tubes and a second gas collecting tube, the gas inlet tube and the second gas collecting tube traverse through the outer cylinder and the radial reaction basket, the gas cooling tubes are positioned in the radial reaction basket and are connected between the gas inlet tube and the second gas collecting tube, the first gas collecting tube is arranged in the radial reaction basket, and one end of the first gas collecting tube stretches out of the radial reaction basket and the outer cylinder; and the outer cylinder is provided with a gas opening, the sidewalls of the radical reaction basket and the first gas collecting tube are respectively provided with vents to make a gas sequentially go through the gas opening, the gap, the radial reaction basket and the first gas collecting tube along a direction basically vertical to the height direction of the outer cylinder or a direction opposite to the direction. The radial gas cooled reactor adopting the radial reaction basket has the advantages of small gas resistance, realization of cooling in the radial reaction basket and heating of unreacted cooled gas, high energy utilization rate and obvious energy saving effect.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a radial air-cooled reactor used in ammonia synthesis and methanol synthesis production. Background technique [0002] The methanol synthesis reaction is a strongly exothermic reversible reaction, the main reaction formula [0003] CO+2H 2 =CH 3 OH+ΔH R1 [0004] CO 2 +3H 2 =CH 3 OH+H 2 O+ΔH R2 [0005] ΔH R1 =-76519.5-49.2909T----------P132 [0006] ΔH R2 =-37858.2-22.666T-------P132 [0007] The reaction is carried out in a reactor equipped with a catalyst. The modern methanol catalyst is a low-pressure low-temperature copper-zinc-aluminum system with a pressure of 4.0MPa-8.5MPa and a temperature of 210°C-280°C. It can be seen from the above that the unreacted gas must be preheated to 210°C. During the reaction process, the heat release is large and the temperature rises greatly. For example, the temperature rises by 32°C for every 1% CO reaction. [00...

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Problems solved by technology

CO and H 2 The reaction to form methanol is strongly exothermic, and the reaction with H 2 , N 2 Compared with gaseous ammonia synthesis, the heat released by generating 1 mol of methanol is almost twice as much as that of 1 mol of ammonia, while the operating temperature range of copper-based catalysts for synthesizing methanol is only about 50 °C, and the operating temperature range of iron-based catalysts for synthesizing ammonia is 120 °C ~ 150 °C , so on the one hand, it is necessary to preheat the reactant gas to a certain temperature, and on the other hand, it is necessary to quickly remove the reaction heat. In the prior art, different equipment is required to preheat and cool down separately, which consumes a lot of energy

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