Coke oven pulse bag filter

Coking plants are one of the most polluting industries in the steel industry. The smoke generated during coal loading, the gas generated during coke discharge, and the freshly baked coke are fiery red and hot, with temperatures reaching 1000-1100 ℃, and need to be extinguished. Wet quenching is usually used, which means transporting the red coke to a quenching tower several tens of meters high and pouring water to extinguish it. The scorching red coke was sprayed by water several tens of meters high from the top of the tower, and the rising smoke

Product Details

Coking plants are one of the most polluting industries in the steel industry. The smoke generated during coal loading, the gas generated during coke discharge, and the freshly baked coke are fiery red and hot, with temperatures reaching 1000-1100 ℃, and need to be extinguished. Wet quenching is usually used, which means transporting the red coke to a quenching tower several tens of meters high and pouring water to extinguish it. The scorching red coke was sprayed with water several tens of meters high from the top of the tower

The rising smoke carries a huge amount of minerals such as coke powder, smoke, and hydrogen sulfide. The polluted area is several square kilometers, and the downwind area is several kilometers away. In the past, aluminum dust collectors were commonly used for dust removal devices. With the steam rising from the coke powder, the smoke and dust were first washed away by the quenching water, and then captured by the louver type capture plates standing at a 60 ° angle at the top of the tower. Then, they were washed down by the water, and the coke powder was settled and recovered, thus achieving the goal of comprehensive dust removal utilization. Aluminum dust collectors are subjected to high-temperature corrosion from corrosive media, spray from phenolic wastewater, erosion and impact from smoke and coke powder, and work under conditions of repeated changes in temperature. Their lifespan is extremely short, and they are usually corroded and perforated within a few months. Now titanium dust collectors have replaced aluminum dust collectors, solving the material problem of coke quenching and dust removal devices. By using a titanium dust removal device, the quenched coke smoke becomes significantly whiter, the dust content decreases significantly, the frequency of maintenance is reduced, costs are saved, work efficiency is improved, and the labor intensity of workers is reduced. Introduction to Coke Oven Pulse Bag Dust Collector This flame retardant coke oven pulse bag dust collector is a proprietary technology of our company, which has been widely used in coke oven dust removal systems after more than ten years of practice. Reaching the international level of the 1990s, it is an advanced equipment widely used domestically. The obvious difference between this fire-resistant coke oven pulse bag filter and other pulse bag filters is that it absorbs the advantages of international coke oven dust removal. The coke oven pulse bag filter is a special purpose fire-resistant and explosion-proof large coke oven pulse bag filter due to the high temperature and easy combustion and explosion of coke oven dust with open flames, as well as the sharp surface of coke powder.

This flame retardant coke oven pulse bag filter has the following significant characteristics:

1. The coke oven pulse bag filter has a secondary spark separation function.

We know that coke ovens generate a large amount of high-temperature dust with sparks during the coking process. If this dust is not cooled and sparks are not eliminated before entering the bag filter, it will cause combustion and explosion. In order to reduce the temperature of dust and minimize open flames, a cooler is installed in front of the coke oven pulse bag filter in the dust removal system. Before entering the pulse bag filter of the coke oven, the dust is cooled and sparks are separated by a cooler. In addition to rapidly cooling high-temperature dust, the thermal storage cooler also has a special function of extinguishing sparks from dust through the cooler during the cooling process. However, residual sparks still enter the coke oven pulse bag dust collector with the dust. The flame retardant type coke oven pulse bag dust collector is designed with a flame retardant partition structure. The dust with residual sparks entering the dust collector is first obstructed by the flame blocking partition, which blocks the open flame and achieves secondary separation. It then directly enters the ash bin without coming into contact with the bag, eliminating the risk of bag explosion. The coke oven pulse bag filter, which adds barrier plates and secondary separation of sparks, is a structural form that other pulse dust collectors do not have.

2. The dust undergoes secondary separation, which improves the service life of the filter bag of the coke oven pulse bag dust collector.

Another characteristic of coke oven flue gas dust is its hardness and sharp surface. This is especially true for larger particle sizes of coke powder. However, these larger particles of dust and dust with residual sparks are separated by the barrier plate and directly fall into the ash bin, while the smoke particles entering the pulse bag filter bag of the coke oven are very fine, which greatly improves the service life of the filter bag of the coke oven pulse bag filter. In the past six months or so, the bag needs to be replaced, and with this structure, the service life of the filter bag of the coke oven pulse bag dust collector can reach more than 1.5 years. There is usually no problem for two years.

Another significant feature of this flame retardant coke oven pulse bag dust collector is the use of a central box for air intake; And the flue gas flows through the split plate evenly, which not only improves the filtration efficiency, but also prevents the generation of reverse airflow during ash cleaning, thus improving the ash cleaning effect.

4. Due to the explosive nature of the coke oven pulse bag filter, in addition to adopting the special structure mentioned above, reinforcement ribs are also installed on the box plate of the coke oven pulse bag filter. At the same time, each chamber is designed as an independent and completely separated structure to reduce the probability of hidden dangers and improve the dust removal effect of the coke oven pulse bag filter. Due to the special nature of coke oven dust, the design of coke oven pulse bag filter adopts the above-mentioned special structure, making the flame retardant pulse filter more professional and adaptable, and therefore widely used in coke oven ground dust removal systems.