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Design Scheme for Flue Gas Treatment in Coal Charging and Coke Pushing Process I. Production Overview and Need for Renovation XX Coking Branch is constructing environmentally friendly cokers without a recovery system. The production process involves side-loading and ramming of coal; the rammed coal cakes are then placed in the carbonization chamber. The gas generated during the coking process is used entirely for heating purposes. After coking is complete, the coke is pushed out using coke pushers, and the mature coke is transferred to coke quenching vehicles, which take it to the quenching tower where it is quenched by spraying water. After quenching, the coke is unloaded onto cooling platforms to cool down. Once cooled, it is sent to the coke screening building, where it is screened and graded before being sent out for sale. The non-recycling coke ovens at XX Coking Branch currently do not have coal charging and coke pushing smoke purification facilities installed; the dust emitted by these ovens poses a certain level of pollution to the environment surrounding the plant, as well as affecting the lives of the local residents. By installing the coal charging and coke pushing flue gas purification system provided in this plan, it is possible to ensure that the gaseous pollutants emitted from the coke ovens during production are discharged at levels that meet the specified standards. After the project is implemented, both environmental and social benefits are considerable. II. Scope of the project renovation: The main focus of the research is to develop a practical and feasible technical solution for the flue gas treatment project related to coal charging and coke pushing in the non-recycling coke ovens of XX Coking Branch, taking into account the natural climate conditions of XX, as well as the characteristics of the dust and gaseous pollutants emitted during the coke production process. To ensure that all existing production equipment operates continuously and stably, and that flue gas emissions remain within specified standards. III. Technical Solution for Flue Gas Purification during Coal Loading and Coke Pushing To address the dust and gaseous pollutants emitted during coal loading and coke pushing processes, this technical solution is proposed based on the existing production processes and equipment characteristics of the coking plant, as well as the site conditions, taking into account the technical advantages of this approach: Solution 1: 1. Treatment of flue gas during coal loading: Utilize smoke collection hoods installed on the coal loading vehicles to capture the flue gas escaping from the furnace doors during coal loading. This gas is then conveyed through pipelines to a bag filter, where it is treated to meet regulatory standards before being released. The purification process flow is as follows: bag filter, exhaust fan, discharge; coal loading gas collection hood; flue gases escaping from the furnace door on the machine side; gas collection pipes; the coal loading dust removal system includes a new coal loading gas collection hood, gas collection pipes and fittings, a bag filter, an exhaust fan, and related supporting equipment – all of these devices are mounted on vehicles. 2. Flue gas treatment during coke pushing: (1) On the coke side, once coke pushing begins, the door air collection hood installed above the furnace door collects the flue gas generated during this process. This gas is then sent via a connection device to the gas collection pipeline on the coke quenching vehicle, from where it enters the split-flow condensation dust collector (a patent of our company). There, the flue gas is initially dedusted and cooled. The gas after this preliminary treatment proceeds to a bag filter for further processing before being released. The purification process flow for exhaust gas from the exhaust fan is as follows: impact device, furnace door air collection hood, air collection pipeline, bag filter, split-flow condensation dust collector (patented), and a new furnace door air collection hood added to the coke side pusher dust removal system (one air collection hood is installed at each furnace opening on the coke side), in addition to a mobile impact device, split-flow condensation dust collector, air collection pipeline, bag filter, exhaust fan, and related supporting facilities. Except for the furnace door gas collection hood, all components of this system are vehicle-mounted devices. (2) On the machine side, a coke pushing gas collection hood is installed on the coke pushing vehicle; this hood collects the smoke that escapes from the furnace door during coke pushing, and sends it through gas collection pipes to a bag filter for treatment. The bag filter shares the same system as the coal loading dust removal system. Option 2: Install a gas collection hood above each furnace door on the machine side and the focal side; connect these hoodes together with pipes, and finally lead them to a split-flow condensing dust collector located on the top of the furnace. During coke pushing and coal charging, the gas collection hood captures the flue gases generated by these processes; these gases then enter a split-flow condensing dust collector, where they undergo initial dust removal and cooling. The gas after this preliminary treatment proceeds to a bag filter for further processing, and is released only after it meets the required standards. The purification process flow is as follows: furnace door air collection hood on the machine side, valves, air collection pipes, high-temperature resistant bag filter, diverging condensation filter, furnace door air collection hood on the coke side, valves, air collection pipes, exhaust fan, and emissions. This dust removal system includes additional furnace door air collection hoods (one installed for each furnace door on both the machine side and the coke side), control switch valves (one installed for each furnace door on both sides), air collection pipes, diverging condensation filters, bag filters, an exhaust fan, and related supporting equipment. Option 3: 1. Flue gas treatment during coal loading. This flue gas treatment scheme for coal loading is the same as Option 1 ； 2. Treatment of coke pushing flue gas (1) Machine side: The coke pushing dust removal system on the machine side in this scheme is the same as that in Scheme 1. (2) Coke side: After coke pushing begins, the coke side pushing gas collection hood installed on the coke quenching vehicle collects the flue gases escaping from the furnace door. These gases, along with those collected by the hood of the coke quenching vehicle, are sent through gas collection pipes to a Venturi wet dust collector for treatment, and are released after meeting the required standards. The purification process flow is as follows: flue gas emitted by the coking car, coking car exhaust collection hood, collection pipeline, flue gas emitted from the large furnace door, pusher car exhaust collection hood on the coke side, collection pipeline, water treatment unit, Venturi tube wet dust collector, exhaust fan, and discharge. This system includes a new pusher car exhaust collection hood on the coke side, a coking car exhaust collection hood (used to cover the entire coke block), collection pipelines, a Venturi tube wet dust collector, a water treatment unit, an exhaust fan, and related supporting facilities. All equipment and facilities in this system are onboard devices. IV. Main Equipment and Working Principles of the Coal Loading, Coke Pushing, and Dust Removal System (1) Option 1: 1. Coke pushing gas collection system: On the coke side, the upward movement of the hot smoke flow can be fully utilized, and the smoke gathered at the top of the hood is quickly directed by exhaust fans to the shunt condensation dust collector located on the coke quenching vehicle. On the machine side: Utilizing the upward movement of the hot smoke flow and the suction force of the exhaust fan, the smoke accumulated at the top of the coke pushing gas collection hood is directed through the gas collection pipeline to the bag filter. The bag filter shares the same system as the coal loading dust removal system. 2. Coal loading gas collection system: Making full use of the upward movement of hot smoke streams, the exhaust gas accumulated at the top of the coal loading gas collection hood is quickly guided by exhaust fans from the gas collection pipe to the bag filter on the coal loading vehicle. 3. Bag filter: It further processes the flue gas that has been initially treated by the split-flow condenser filter, primarily capturing smaller particles. 4. Other purification facilities: (1) Gas collection system: Coke pushing and dust removal system: furnace door gas collection hood, impact device, machine-side coke pushing gas collection hood, gas collection pipes and fittings, induced draft fan ； Coal loading dust removal system: coal loading collection hood, collection pipeline ； (2) Purification system: Coke pushing gas collection system: shunt condensing dust collector, bag filter; Connection pipes for purification devices: Coal loading dust removal system: bag filter, connection pipes for purification devices ； (II) Option 2: Both the coal-loading flue gas and the coke pushing flue gas make use of the upward movement of the hot smoke stream as well as the suction force of the exhaust fan; the flue gas accumulated on the top of the hood is drawn through the collection ducts to the bypass condensation dust collector located on the top of the furnace. Main purification equipment: (1) Gas collection system: furnace door gas collection hood, transfer valves, gas collection pipes and fittings, exhaust fan ； (2) Purification system: Shunt condensing dust collector, bag dust collector, connection pipes for purification devices ； (III) Option 3: 1. Coke pushing and gas collection system – On the coke side, taking advantage of the upward movement of the hot smoke flow and the suction force of the exhaust fan, the smoke gathered in the gas collection hood over the large furnace door of the coke quenching vehicle as well as on the top of the gas collection hood of that vehicle is quickly guided by the gas collection pipes to the Venturi wet dust collector located on the coke quenching vehicle. On the machine side: Utilizing the upward movement of the hot smoke flow and the suction force of the exhaust fan, the smoke at the top of the tarp on the coke pusher is quickly directed through the exhaust ducts to the bag filter. The bag filter shares the same system as the coal loading dust removal system. 2. Coal loading gas collection system: Utilizing the upward movement of hot smoke streams and the suction force of the exhaust fan, the smoke gathered at the top of the coal loading gas collection hood is quickly drawn from the gas collection pipe to the bag filter on the coal loading vehicle through the exhaust fan. 3. Venturi Wet Dust Collector: The Venturi Wet Dust Collector is a new type of dust removal equipment developed by our company specifically for the purification of high-temperature flue gases. It is capable of handling high-temperature flue gases, features high purification efficiency and dehydration rates, and also significantly reduces the operating resistance of the system. 4. Main purification equipment: (1) Gas collection system: Coke pushing and dust removal system: coke side pushing gas collection hood, quenching car coke gas hood, machine side pushing gas collection hood, gas collection pipes and fittings, induced draft fan ； Coal loading dust removal system: coal loading hood, gas collection pipeline, induced draft fan ； (2) Purification system: Coke pushing dust removal system: Venturi wet dust collector; Pipes connecting the purification devices. Coal loading dust removal system: Bag dust collector; Pipes connecting the purification devices ； V. Electrical Control System 1. Low-voltage system: The power supply is three-phase AC380V, 50HZ. The system is a PLC frequency conversion control system. 2. Selection of components for low-voltage systems: All are top-brand domestic products. VI. Project Schedule (1) Project design: 1 month ； (2) 3 months for project construction and equipment installation and commissioning ； The project takes 4 months in total, from design to completion of installation and commissioning.