Coal charging process for reducing emission of sulfur dioxide from source

Abstract

The invention relates to a coal charging process for reducing emission of sulfur dioxide from the source. Before the top-charging coke oven is used for charging coal again, combustible substances areintroduced into the carbonization chamber to be subjected to combustion reaction with oxygen in the carbonization chamber, so that oxygen in the carbonization chamber is consumed, and an anoxic environment is formed in the carbonization chamber; therefore, coal is prevented from being subjected to combustion reaction with oxygen in the carbonization chamber during coal charging again, and generation and emission of sulfur dioxide are reduced from the source. After oxygen in the carbonization chamber is completely consumed by utilizing combustible substances, the high-pressure ammonia water spraying device corresponding to the carbonization chamber in the coal gas collecting and purifying system is started, so that residual oxygen in the carbonization chamber can be effectively removed on the basis of realizing sufficient combustion of the combustible substances and oxygen components in the carbonization chamber.

Description

technical field [0001] The invention relates to the technical field of air pollutant control in the coke oven production process, in particular to a coal charging process for source reduction of sulfur dioxide emission. Background technique [0002] During the process of charging coal into the top-loading coke oven, a large amount of smoke and dust will be generated when the coal enters the carbonization chamber. Due to the coke pushing operation in the carbonization chamber before coal charging, the coke oven carbonization chamber has experienced door removal, coke pushing, and furnace door closing. During the process, when the door is removed and the furnace door is closed, the carbonization chamber is connected to the outside atmosphere, and the air outside the carbonization chamber will enter the carbonization chamber. Therefore, when coal is subsequently loaded into the carbonization chamber, the coal material will undergo a combustion reaction with the oxygen in the ai...

AI Technical Summary

Problems solved by technology

Therefore, when coal is subsequently loaded into the carbonization chamber, the coal material will undergo a combustion reaction with the oxygen in the air that enters the carbonization chamber during the opening period of the carbonization chamber in a high-temperature environment. Because the coal material contains sulfur, a certain amount of sulfur will be generated during combustion. SO 2 , the resulting SO 2 When coal is loaded, part of it enters the coal charging dust removal system with the coal charging dust, resulting in SO 2 Exceeding the relevant environmental protection standard limits

[0003] For the SO discharged through the coke oven coal charging dust removal system during the coal charging process 2 , because of the instantaneous intermittency of coal-charging smoke and dust, it has caused difficulties in the stable and efficient desulfurization of subsequent smoke and dust, and the construction and operation of desulfurization facilities have also greatly increased the input cost of enterprises

Images