Swirl water film desulfurization dust collector
1, Venturi atomizing device, spray device for internal spray flow type, uniform atomization, 316L or equivalent material.
2, the cylinder is made of outer steel plate, lined with granite, and the intermediate pouring material is vibration-poured, which can withstand the high temperature below 2500℃.
3, the sink acid and alkali resistance, high temperature resistance, block overflow, the inner wall of the cylinder is smooth, less water consumption.
4, the installation is simple, with an antifouling resin slurry in the joint connection (usually negative pressure) or acid-resistant cement.
Advantages: ash granularity is 0.1-100um, dust removal is 90-98%, simple structure, easy installation.
Disadvantages: The throat wear is serious, the smoke with water causes corrosion of the fan and the flue, so that the smoke temperature is reduced to 65-85℃, which is unfavorable to the diffusion of the exhaust smoke and other problems need to be improved in the application (through the GGH gas reheater).
Operation and Troubleshooting:
(1) Start the water pump first, and then start the induced draft fan. When the boiler is out of service, first shut down the induced draft fan for a period of time, and then stop the water pump.
(2) The PH value should be maintained at 9-10
(3) Open the access hole to clean the ash after 3-5 months
(4) If the pool is small, precipitation is not enough. High dust inlet concentration, or intermittent combustion of the boiler will occur in the following two situations
1. The dust collector resistance increases
2. The boiler load increases, etc., so it is necessary to check and clean the inlet of the Venturi dust collector and the elbow of the rear flue.
device parameter list
Swirl water film desulfurization dust collector installation:
1. Install from bottom to top according to the general installation drawing.
2. When the equipment base is in place, pay attention to the orientation of the sewage outlet and the sewage ditch.
3. The simplified joint layer is paved with furan cement, and the upper simplified section is in place smoothly.
4. When installing the equipment at the entrance, please pay attention to the orientation of the equipment at the entrance to ensure that it is consistent with the fan outlet center.
5. When the nozzle section of the tower body is installed, the orientation of the nozzle is corresponding to the position of the water pipe on the pump.
6. The tower body is full and solid.
7. After the tower body is installed, the relevant platform and maintenance ladder outside the tower are welded and installed according to the drawing.
(Installation conditions must be met before entering the site, including foundation, pool, sewer, completion and maintenance period. Prepare the scaffolding and arrange the demolition. The scaffolding is usually steel pipe, and it is double row scaffold when it is built. Determine the crane according to the weight of the equipment and the installation position.
1. Before equipment operation, water should be injected into the circulating pool and slurry preparation tank to a reasonable degree to avoid corrosion of water pump and agitator bearings.
2, the fluid pipeline part of the valve is in the required operating state, timely check the fluid pipe leakage phenomenon; The slurry preparation tank is prepared for pulping at 15% concentration, and the main circulating pump clear water tank is added to PH9-12.
3. Open the main circulation pump when the equipment is running, and open the fan after a large amount of water is discharged from the sewage outlet at the bottom of the spray tower; Open the relevant electrical buttons according to the process, pay attention to the water level, ensure that the system operation requirements are met, and avoid the tower body water dry burning.
4, pay attention to the boiler negative pressure changes during operation, reasonable expense of fog removal backwashing, real-time observation of the circulation pool.
5, shut down the fan first, and keep the water supply system of the desulfurization tower running to avoid damage to the tower body and the demister caused by high temperature smoke.