Safety water seal issues in sulfuric acid production from pyrite
Thread Content
When producing acid from pyrite, a safety water seal is installed in the flue gas duct at the outlet of the electrostatic demister in the purification process; why isn’t it simply replaced with a make-up air valve?
A safety water seal prevents damage to the equipment. After draining the water, air should be introduced to prevent damage to the equipment. The oxygen supply port can be placed before the drying tower, or before the electrostatic demister; it can also be installed on the electrostatic demister pipeline. Generally, it is placed before the drying tower or on the electrostatic demister pipeline
The safety water seal is installed on the outlet pipeline of the electrostatic demister, while the air supply hole is located on the inlet pipeline of the drying tower
The safety water seal is primarily used to protect the electrostatic demister, preventing it from being collapsed under conditions of excessive negative pressure in the system.
The safety water seal is an emergency measure designed to protect the equipment in the purification section
The wash towers and electrostatic precipitators in the purification section are generally made of non-metallic materials, and they have a limited capacity to withstand negative pressure; if this pressure exceeds that limit, it can easily cause damage to the equipment. The purpose of installing a safety water seal at the outlet of the electrostatic precipitator is to allow air to flow in large quantities when the negative pressure rises above the designed level, thereby reducing the negative pressure and protecting the equipment.
Can the oxygen supply holes be placed before the electrostatic demister?