Heating vulcanization system for shift catalyst

Abstract

The invention relates to the technical field of shift catalyst heating vulcanization, in particular to a shift catalyst heating vulcanization system which organically combines shift vulcanization witha Topsoe process. The invention provides a shift catalyst heating vulcanization system. The shift vulcanization is organically combined with a toprazole process. One path of outlet substances of thecombustion furnace enters a shift oven for vulcanization, and nitrogen supplementation and new heat source introduction are not needed in the vulcanization process; 0.1 MPa and 850 DEG C flue gas froma combustion furnace is fed, so that the use of a pressure increasing device is reduced, a heat source is not required to be introduced in the process, the cost is reduced, and the service life of the system is prolonged; the other path of flue gas enters a Topsoe acid making reactor through a waste heat recovery pipeline for conversion of SO2; in the Topsoe acid making process, outlet flue gas of a combustion furnace is introduced and used for replacing 2.5 MPa waste heat boiler heating gas in the temperature rising process, so that the vulcanization temperature is increased, the activity ofthe shift catalyst is effectively activated, cracking of a welded junction is avoided, and long-period stable operation of a system is guaranteed. The system thoroughly solves the problems that the 2.5 MPa waste boiler is easy to leak and the catalyst vulcanization effect is poor.

Description

technical field [0001] The invention relates to the technical field of temperature-increasing vulcanization of conversion catalysts, and more specifically, to a temperature-increasing vulcanization system of conversion catalysts. Background technique [0002] The heating and vulcanization operation of the conversion catalyst is divided into four stages, heating up, the initial stage of vulcanization, the main period of vulcanization and the cooling period. Roots machine will be about 50 ℃, containing high concentration of CS 2 N 2 Raise the pressure to about 45kPa, and then send it to the shift furnace after being indirectly heated by a 2.5MPa waste pot to heat up and vulcanize the shift catalyst. With CS 2 N 2 It goes through the tube side, and the superheated steam at about 430°C goes through the shell side. In this process, hydrogen sulfide severely corrodes the 2.5MPa waste pot during the sulfidation process. Using a 2.5MPa waste boiler as a heating source, the max...

AI Technical Summary

Problems solved by technology

During vulcanization, a separate Roots machine is required to raise the pressure, which is not used in normal production, which increases equipment investment and maintenance costs, and consumes electric energy during vulcanization

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