Operation and maintenance costs Equipment operation and maintenance costs is an important basis for economic analysis of dust, the following will make a comparison for the running costs of two kinds of dust collector: 1, energy consumption Of bag filter: fan energy consumption, small cleaning energy. Electrostatic bag house: fan energy consumption, large energy field. However, in general, two kinds bag house power consumption considerably. For electrostatic bag house dust is difficult to capture, or when the number of farms more than four field electrostatic bag house, power consumption of the electrostatic bag house bag filter to be higher than, that at this time the cost to run the electrostatic bag house higher than the baghouse. If you follow the forthcoming new environmental standards, electrostatic bag house achieve compliance if the words, must use more than four field electrostatic bag house, the power consumption will be higher than a certain baghouse. 2, maintenance costs Bag filter maintenance and overhaul costs are mainly replacement bag fee, the actual operation from the current situation, a bag of replacement costs only 15– 2-year sewage charges to pay less than the portion of the electrostatic bag house can be compensated. Electrostatic bag house maintenance and repair costs is to replace the main board of the anode, cathode lines and rapping hammer or the like. This higher cost, but life is relatively long, about six years. 3. Economic benefit analysis The actual operation of the emission concentration bag house is about electrostatic bag house 10, and thus, power plants using bag house actual pay pay sewage charges for about 1/10 of the electrostatic bag house sewage charges. If in accordance with the national sewage charges now, the use of bag filter after each furnace / year sewage charges underpaid part is considerable, at least a million to several million dollars. That is according to standards, then do not pay sewage charges before using the bag filter can be exempt from the charges. In addition, the bag filter desulfurization efficiency of about 5 or so; it can also reduce power plant sulfur dioxide sewage charges. At present, the company is organizing manpower bag house filter surface dust layer desulfurization agent granulation technique developed in the next project, we will implement phased bag filter dust and dry desulphurization technology integration, then, we will present existing bag filter dust removal and desulfurization achieve integration.