Tube bundle dust collector

The current air pollution is severe, and haze has a great impact on people's lives and health. The Ministry of Environmental Protection of China requires ultra-low emissions of smoke and dust, with a smoke and dust emission index of less than 5mg/Nm3. At present, the best process for flue gas treatment is bag dust removal+wet desulfurization. The dust content of bag dust removal flue gas can be reduced to 30mg/Nm3. After the flue gas passes through the desulfurization absorption tower, the smoke and dust do not decrease but rise, reaching 40-50mg/Nm3. The reason is that the clean flue gas discharged after wet flue gas desulfurization contains a large number of gypsum droplets. Although the absorption tower is equipped with a defogger, the effect is not good, and it cannot absorb dust particles and droplets below 15um, resulting in a large amount of smoke and dust emissions in the discharged clean flue gas, severe gypsum rain phenomenon, and serious air pollution.

technical performance

The new cyclone dust and mist remover is a newly invented dust and mist removal technology, which is a technological revolution in flue gas dust and mist removal.

The present invention is a multi tube cyclone dust removal and dehazing device that can replace the existing dehazing device and wet electrostatic precipitator in the desulfurization absorption tower. The multi tube cyclone dust and mist remover divides a single cyclone plate defogging device into multiple individual cyclones, increasing the dust collection area of the cylinder wall. The small diameter cyclones shorten the distance of smoke and dust travel, which is conducive to the collection of smoke and dust droplets. The device has a simple structure, stable operation, significant effects, low cost, no additional operating expenses, and can achieve ultra-low emissions with smoke and dust content reaching the emission standard of<5mg/Nm3.

This device does not require the production of a dedicated equipment casing, it only needs to be installed in the defogger section of the desulfurization tower, and the flushing water can be the defogger flushing water. The resistance of the equipment is less than that of the defogger and does not increase the power of the fan. The equipment runs stably, has a high usage rate, is corrosion-resistant, does not cause damage, has a long service life, does not require dedicated personnel to be on duty, and does not require electrical control. This technology is the best choice for ultra-low emissions in flue gas treatment.

design parameters

Determination of process

Overall, the wet multi tube cyclone dust removal and mist removal technology not only has the function of removing ultrafine dust. It also has the ability to remove pollutants such as sulfur trioxide, sulfur dioxide, nitrogen oxides, etc. The dust collected by the liquid film is washed with water without generating secondary dust. The device has no moving parts and the flushing water is automatically operated by PLC, making it unmanned and easy to operate. The device is made of corrosion-resistant materials such as fiberglass, PP, PE, ABS, etc., and the service life of the process equipment can reach up to 30 years. This process is simple to operate and can achieve the expected removal rate of pollutants such as ultrafine dust, sulfur trioxide, sulfur dioxide, aerosols, nitrogen oxides, etc.