A method and device for rapid online sulfur extraction and catalyst rapid temperature rise

Abstract

The invention discloses a method and device for rapid on-line sulfur extraction and catalyst rapid temperature rise, comprising a main fuel gas pipeline (10), an acid gas pipeline (11), a main combustion furnace (12), a sulfur recovery device (13), a main The fuel gas pipeline (10) and the acid gas pipeline (11) are respectively connected to the main combustion furnace (12), and the outlet pipe of the main combustion furnace (12) is connected to the sulfur recovery device (13), wherein: The acid gas shut-off valve A (1) and acid gas shut-off valve B (3) on the acid gas pipeline (11) are provided with a nitrogen gas pipeline (9); the main fuel gas pipeline (10) is provided with a gas pipeline (8), the main Fuel gas pipelines (10) are divided into two groups and connected to the main combustion furnace body and head respectively. The two groups of fuel gas pipelines are respectively equipped with fuel gas shut-off valve A4, fuel gas shut-off valve B (5), gas pipeline (8) A gas valve (7) is provided on the top, and a fuel gas shut-off valve C (6) is provided between the main fuel gas pipeline (10) and the gas pipeline (8). The invention has a good sulfur extraction effect during shutdown, avoids overheating of the catalyst bed during startup and shutdown, rapidly raises the temperature of the catalyst during startup, and ensures the maintenance safety of the device at the same time.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a method for rapid on-line sulfur extraction and catalyst temperature rise, and also to the device for on-line rapid sulfur extraction and catalyst temperature rise. Background technique [0002] In the production of coal chemical industry, a large amount of H 2 The crude gas containing sulfides such as S, these sulfides are by-products produced by the coal chemical process, cannot be directly burned and discharged, and can only be discharged after further treatment to meet the emission standards. [0003] As the country's requirements for safety and environmental protection become increasingly strict, the treatment of sulfur-containing compounds is even more demanding and strict, and direct combustion emissions are strictly prohibited. The Claus sulfur recovery unit is the first choice for disposing of sulfur-containing compounds in the coal chemical industry. However...

AI Technical Summary

Problems solved by technology

The Claus sulfur recovery unit is the first choice for disposing of sulfur-containing compounds in the coal chemical industry. However, when it is parked for replacement, cooling, and sulfur extraction, the system relies on natural cooling, and the amount of sulfur extraction gas is small, the speed is slow, the sulfur extraction effect is poor, and the time is long.

[0004] When the catalyst is heated up, it is necessary to control the temperature rise rate of the combustion furnace at the same time. If the fuel gas volume is small, the temperature rise rate of the catalyst bed will be slow, the heat will be uneven, and the driving time will be long.

If the amount of fuel gas is large, the temperature rise of the combustion furnace is too fast, there are potential safety hazards for the equipment, and the catalyst bed temperature rises for a long time during the start-up process. These problems are directly related to the safety and environmental protection of the main coal chemical plant.

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