Coking plant dust collector renovation

The renovation plan for the dust collector in the coking plant includes all aspects related to the dust removal system of the coke oven currently in production and the coke oven under construction.

Specifically, it includes: dust removal process pipelines and equipment, civil engineering, electrical automation control, etc. The dust collector in the coking plant has a large processing air volume, good dust removal effect, high degree of automation, simple and beautiful structure, easy maintenance, and energy-saving; The controller automatically sprays and cleans the dust at a fixed time or with a fixed resistance, implementing automated operation with low air consumption, stable performance for dust cleaning. Improve dust removal and filtration efficiency, intercept finer dust particles, and increase dust capture rate by 20%. Prevent the gas from cooling below the dew point in the bag chamber and continue to operate under negative pressure. Set a reasonable volume of purified gas to increase its service life and save costs.

Design principles for bag filter in coking plant:

Adhere to the principles of maturity, simplicity, practicality, and economic savings.

Optimize the design, try to use existing dust removal facilities as much as possible, reduce the amount of work under quality conditions, and achieve both good and economical results.

Strictly implement local regulations on environmental protection, industrial hygiene, fire safety, etc.

The coal loading flame retardant bag dust removal ground station process is used for dust removal. After purification by the dust removal ground station equipment, the dust collection rate is over 95%, the dust removal efficiency is over 99.5%, and the dust concentration of the exhaust gas is lower than the emission standard, which meets the requirements of environmental protection standards.

Process principle of dust collector for coking plant ground station:

The coke oven dust removal ground station system is used to connect the dust collector and the coke blocking car dust cover, allowing the coke side smoke and dust to enter the dust removal ground station through this main pipe for processing. It is the connecting channel between the mobile dust source and the fixed equipment. The coke dust collection main pipe consists of a fixed interface flap valve, an expansion joint, a balanced flap valve, and a silencer at the end of the main pipe. The fixed flap valve is composed of valve plate, support arm, pipe body and other parts. When the coke oven releases coke, the hydraulic push rod of the coke blocking car pushes open the flip plate of the flip plate valve, and the valve control rod rotates 75 degrees to open the valve. The expandable interface of the coke blocking car duct is docked with the end face of the flip plate valve, allowing the dusty flue gas to enter the dust collection main pipe composed of fixed flip plate valves through the dust collection hood of the coke blocking car; After the coke pushing is completed, the hydraulic push rod and expandable interface on the coke blocking car are retracted, and the flap valve is closed, completing the dust removal plan for one furnace. The fixed flap valve is in a high temperature state and is constantly open and closed, and does not deform when heated. It adopts a U-shaped skeleton uniformly distributed around the periphery to ensure that the valve plate remains unchanged for long-term use. A metal wire asbestos sealing gasket is added at the sealing point to achieve the sealing effect of the valve; Metal wrap gaskets are used between each set of flap valves, between flap valves and straight pipe sections, as well as between balance valves, expansion joints, and end muffler flanges, with a static seal leakage rate of less than 0.5%.

Advantages of ground station dust collector in coking plant:

1. Coal loading and dust removal use non combustion methods to mix a large amount of air, so that the combustible component content in the smoke is far below the lower explosive limit, and the smoke enters the dust removal system;

2. The coke side dust removal system collects dry coke powder and gas energy to absorb the components of coal dust, tar, and moisture, without considering measures such as insulation, heating, and anti condensation of dust removal equipment;

3. The ground station dust collector in the coking plant adopts a low-pressure pipe spray pulse dust collector to improve the dust cleaning capacity of the dust collector, prevent dust from sticking to the filter material, and increase system resistance;

4. This system design fully utilizes the purification capacity of ground dust removal equipment, and integrates coal loading dust removal and coke side dust removal into one system through the design and control of fans and pipeline systems, which can save renovation investment.

Due to the process characteristics of coke ovens, namely the volatile matter of coking coal, a large amount of smoke and dust is generated during coal loading. In response to the high moisture content, high dew point temperature, and flocculent and floating nature of the smoke and dust during coal loading, the coking plant adopts a fire-resistant bag dust removal ground station system to control atmospheric environmental pollution, and the dust removal effect is ideal.

Shanxi Coking Plant Dust Collector Renovation Shandong Coking Plant Dust Collector Renovation