2. Achieve the goal of energy saving and emission reduction through small index competition.
3. Reduce the power consumption rate of equipment through technical transformation.
3. 1 Reuse of cement slurry before technical transformation. Mud produced by reclaimed water can only be treated as waste, which not only causes pollution, but also increases the transportation cost of the company. Through technical transformation, the medium cement slurry is reused in desulfurization system, which not only controls pollution, but also turns waste into treasure, which not only reduces pollution, but also reduces the consumption of desulfurization limestone, thus creating millions of values every year and greatly improving the company's benefits and image.
3.2 ESP transformation: ESP system is a big power consumer in power plant. Theoretical analysis and practice show that the electric energy utilization efficiency of electrostatic precipitator is very low under the conventional operation mode, and there is a lot of room for energy-saving transformation of electrostatic precipitator.
3.3 Frequency conversion transformation of condensate pump, frequency conversion adjustment has the characteristics of no additional slip loss, high efficiency, wide adjustment range, good output characteristics and convenient use. Corresponding to low load and frequent start-stop occasions, frequency conversion technology can achieve the purpose of saving electricity and protecting the motor. The technical support department carried out frequency conversion transformation on a condensate pump during minor maintenance of the unit. It can be seen that the energy-saving effect is obvious after frequency conversion transformation, and the cost is expected to be recovered in one year.
3.4 With the implementation of micro-oil ignition, the arrangement position of micro-oil ignition burners was changed from four burners on the front wall and four burners on the back wall of the lowest burner to a specially designed and manufactured main burner with less oil ignition function.
4. Take effective measures to optimize the unit operation.
4. 1 Optimized operation of coal mill. The pulverizing system of our company adopted by our factory belongs to positive pressure direct blowing type. Each boiler is equipped with eight raw coal hoppers with a capacity of 500m3. The coal feeder is EG2490 weighing coal feeder produced by Shenyang Stoke Power Equipment Co., Ltd., and the coal pulverizer is BBD-4360 double-in and double-out steel ball pulverizer produced by Shanghai Heavy Machinery Factory. Each pulverizing system consists of 1 coal pulverizer and 2 coal feeders, and each boiler is equipped with 4 pulverizing systems. In general, we use three or four mills to operate. Due to the peak load regulation of the unit, in the middle of the night, we use the middle two mills to run according to the situation of fuel allocation under the condition of ensuring safety. The rated current of the coal mill in our unit is 197A, and it is about 160A in normal operation, which can not only reduce the auxiliary power consumption, but also ensure the stability of the main and reheat steam temperatures.
4.2 Optimize coal blending. By using the characteristics of two coal feeders of double-inlet and double-outlet coal mills and blending coal in different warehouses, we have realized a large number of mixed burning of local anthracite and inferior coal, and solved the adverse effects of using coal on different platforms. When a coal mill simply burns inferior coal, the deterioration of the combustion state of this layer will have a great impact on the combustion, which may lead to boiler fire extinguishing in serious cases. This problem has been well solved by loading coal in different warehouses. Usually, one coal feeder is local anthracite and inferior coal, and the other coal feeder is high calorific value and high volatile train coal, so that the coal blending of two coal feeders of each coal mill can be adjusted in time through the intensity of fire inspection, which improves the combustion situation of this layer and greatly improves the safety of unit operation. The blending of automobile coal alone can create tens of millions of profits for the company every year.
4.3 Standardize operation and strengthen technical training for employees. In order to standardize the operation, the power generation department has specially made detailed operation cards to standardize the operation, minimize mistakes, and avoid the unit's non-stop and personnel and equipment damage caused by misoperation. When the unit is overhauled, it is of great help for the safe and economical continuous operation of the unit to organize personnel to participate in the training of simulator to improve the operation level of each employee and the accident handling level of personnel.