How to control high gas collector pressure
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What methods are generally used to control high gas collector pressure, especially during coal loading? The manual flaps on the π-type tubes are fully open, and the large valves on the suction pipes are also almost at their maximum opening. Also, the pressure in the gas collection pipes that are far from the ionization source is higher; what adjustment methods are generally used?
High pressure in the gas collection pipe can be controlled in the following ways: 1. Adjust the amount of coal gas fed in: It is possible to adjust the speed at which coal is loaded as well as the amount of coal gas fed in, thereby reducing the speed at which gas enters the collection pipe and lowering the pressure. 2. Adjust the exhaust valve: Control the pressure in the collector duct by adjusting the opening degree of the exhaust valve. If the pressure is too high, the exhaust valve can be opened slightly to increase gas discharge and thereby reduce the pressure. 3. Control the mixing ratio of gas: By adjusting the mixture ratio of gas with other gases (such as air), the pressure inside the gas collection pipe can be influenced. The mixing ratio can be adjusted to control the compressibility of the gas, thereby controlling pressure changes. 4. Install a pressure regulating valve: A pressure regulating valve can be installed on the gas collection pipe, and the pressure in the pipe can be controlled by adjusting the degree of opening of this valve. When the pressure in the gas collection pipes far from the ionization products is high, the following adjustment measures can be taken: 1. Install a pressure balancing system: A pressure balancing system should be installed on the gas collection pipes located far from the ionization products; by balancing the pressure with that of the main gas collection pipe or other pipes, the pressure difference can be reduced. 2. Adjusting the distribution system: It is possible to adjust the gas collection pipes that are far from the ionization unit in segments, and by increasing or decreasing the amount of gas fed in, the pressure in each section can be balanced. .
This can be addressed by increasing the suction force of the fan; the large valve on the suction pipe can have its opening adjusted depending on its distance from the fan, and the manual flap on the π-shaped pipe can be adjusted appropriately during coal loading. Valves and flap gates should all be left with some adjustment margin. I’m not sure what type of furnace your factory uses? What is the specific production situation?
5.5-meter ramming coke oven with 65 chambers; cycle time of 24–25 hours, operating time per oven: 20 minutes