A dry-process desulfurization and denitrification catalyst replacement device and method without shutdown

Abstract

The invention discloses a non-stop replacement device and method for dry-process desulfurization and denitrification catalysts, belonging to the technical field of catalyst replacement, including a guide mechanism, a catalyst filling tank, a baffle and a filling system. The filling system is connected with the guide mechanism. The guide mechanism is located inside the catalyst filling tank, and the upper and lower ends of the catalyst filling tank are equipped with baffles; the catalyst filling tank includes an upper grid plate, a mounting ring, a sealing ring, a lower grid plate and a partition, and The upper end of the ring is equipped with an upper grid plate, the lower end is equipped with a lower grid plate, a partition is provided between the lower grid plate and the upper grid plate, and a sealing ring is provided outside the installation ring; the replacement of the catalyst is realized without stopping the machine. , does not affect the normal operation of the desulfurization and denitrification equipment, avoids the tediousness of manually dismantling the internal parts of the reactor and filling the catalyst, avoids personnel working for a long time in a limited space, improves the safety in the process of replacing the catalyst, and replaces quickly and the replacement cycle is short .

Description

technical field [0001] The invention relates to the technical field of catalyst replacement, in particular to a non-stop replacement device and method for a dry-process desulfurization and denitration catalyst. Background technique [0002] Before replacing the catalyst, stop the reaction in the desulfurization and denitrification reactor, clean up the remaining reactants in the reactor, cool down and reduce the pressure, remove the large cover of the reactor, and then use the bucket, funnel, crane, pulley, rope, soft ladder, scaffolding After confirming that the internal parts are in good condition, remove the internal parts and store them well, remove the upper cover of the platform for fixing the catalyst, and put the failed catalyst into the bucket , transport out the reactor, then pour the new catalyst into the funnel, fill it into the platform of the catalyst, close the upper cover, and then assemble the internal parts in sequence, workers and tools are taken out of th...

AI Technical Summary

Problems solved by technology

[0002] Stop the reaction in the desulfurization and denitrification reactor before replacing the catalyst, clean up the remaining reactants inside the reactor, cool down the temperature and reduce the pressure, remove the large cover of the reactor, and then use the hanging hopper, funnel, crane, pulley, rope, ladder, scaffolding With tools such as tape measure, the staff enters the interior of the reactor to conduct a comprehensive inspection of the internal parts of the reactor. After confirming that the internal parts are in good condition, dismantle the internal parts and keep them in good condition. Remove the upper cover of the platform where the catalyst is fixed, and put the invalid catalyst into the bucket In the process, remove the reactor, pour the new catalyst into the funnel, fill it into the platform of the catalyst, close the upper cover, and then assemble the internal parts in sequence, the workers and tools go out of the reactor, assemble the upper cover of the reactor, and the loading of the catalyst Use the height difference of the catalyst, fill the head with a special catalyst, shake the fixed hopper, so that the catalyst is evenly sprinkled on the catalyst platform. During the replacement process, the desulfurization and denitrification equipment needs to be shut down in advance, and the production cycle is extended by cooling down and reducing pressure. The tools used in the replacement process are cumbersome, and people need to enter the reactor and work for a long time in the effective space, which is dangerous, the replacement process is cumbersome, and the reactor is easily damaged

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