Low-temperature-shift catalyst reduction system and process

Abstract

The invention provides a low-temperature-shift catalyst reduction system. The system comprises a low-temperature-shift furnace, a low-temperature shift outlet heat exchanger, a feed gas inlet separator, a feed gas compressor and a low-temperature-shift inlet heater which are sequentially connected. The invention further provides a corresponding process. The low-temperature-shift catalyst reduction system provided by the invention ensures that the flow of a low-temperature-shift reduction loop is smooth, air flow is stable, an airspeed is high, a low-change reduction rate is high, and the quality protection of the catalyst is facilitated; and meanwhile, on-site noise is avoided, and communication between master control and the site is ensured.

Description

technical field [0001] The invention relates to the technical field of chemical industry systems, in particular to a low-variation catalyst reduction system and process. Background technique [0002] CuO / ZnO / Al 2 o 3 The low-slew catalyst for the system is an indispensable catalyst for ammonia synthesis and hydrogen production industries. It can also be used for methanol synthesis and hydrogenation, and it must be reduced before use. Because the reduction process is a strong exothermic reaction and the Cu catalyst is sensitive to heat, if overheating occurs, it will directly affect the activity and life of the catalyst, which has attracted widespread attention. The current reduction system has the following problems: the power of the blower is small, and the gas volume is insufficient. Failure to open the outlet check valve leads to unsmooth process flow of the low-variable reduction circuit; at the same time, the insufficient space velocity leads to a slow low-variable re...

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Problems solved by technology

Because the reduction process is a strong exothermic reaction and the Cu catalyst is sensitive to heat, if overheating occurs, it will directly affect the activity and life of the catalyst, which has attracted widespread attention. The current reduction system has the following problems: the power of the blower is small, and the gas volume is insufficient. Failure to open the outlet check valve leads to unsmooth process flow of the low-variable reduction circuit; at the same time, the insufficient space velocity leads to a slow low-variable reduction rate, and the low-variable bed is prone to overheating during the reduction process, which may damage the catalyst; at the same time, the site noise is very high Large, not conducive to the communication between the main control and the scene

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