Should electrostatic carbon capture be used after all?
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The company is responsible for supplying the coke oven gas from a small coking plant to ceramic factories. The coking plant only has simple ammonia precipitation and cooling processes; the outlet temperature is 40 degrees instead of 20 degrees. The purification system consists only of ammonia removal (this process is not in use either due to the current downturn in the coke industry). Since the power supply is only temporary for 2 years (while waiting for a new large-scale coking plant), our company installed only dry desulfurization equipment; however, just 10 days after operation, tar clogged the fans. We are preparing to activate the electrostatic carbon capture device, but according to the design institute’s advice, all other purification equipment must also be used; otherwise, the effectiveness will be poor. The investment is too high and not worth it – should we go ahead with installing electric coke catchers now? I’d like to ask everyone for advice! ! !
Electrostatic carbon capture must be installed; otherwise, clogging is inevitable, as the coke powder is very fine.
For electrostatic capture, 40% of the tar is absorbed in the gas-liquid separator, while 60% is absorbed by electrostatic capture, regardless of the process flow. Electrostatic capture is essential in coking plants; however, cyclone capture can be used as a substitute to save on investment costs.
Based on production experience, an electric tar catcher is necessary; it is quite effective at removing tar. However, it requires high-voltage electricity, so safety must be taken into account.
What is your gas supply capacity, and what are the requirements regarding the gas source on the other side? If the gas volume is high, a two-stage tar removal process using a primary cooler for rough removal and an electrostatic precipitator for fine removal is necessary in order to achieve thorough purification.