Industry Reports
Talking about the Measures of Energy Saving and Emission Reduction in Cement Plant
1. Cement kiln pure low-temperature waste heat power generation
Pure low-temperature waste heat power generation technology, that is to recover a large number of low-grade exhaust waste heat through the waste heat recovery device - waste heat boiler in the new dry cement production line. That will result in superheated steam to promote the steam to achieve thermal energy - mechanical energy conversion, and then drive the generator to generate electricity, to supply electricity load in the cement production process. The technology only greatly improve the production process of energy use and the protection of the environment, but also greatly improve the economic efficiency of enterprises and enhance the market competitiveness of their products.
2. The energy saving of cement plant motor system
(1). Energy saving of transformer: a reasonable determination of the transformer capacity can make it runs in the best condition. Replace with the new energy-saving S9-type transformer to reduce the iron loss, magnetic leakage loss during no-load, the iron loss caused by excitation current and the loss in the transformer coil caused by load current during on-load (it is proportional to the square of the load current).
(2). Reactive power compensation: reactive power supply, as same as active power supply, is important to ensure the power quality. Power system should maintain a reactive power balance, otherwise it will reduce the system voltage loss, equipment damage, power factor decrease. More seriously, it will cause the voltage collapse, and the whole system failure, resulting in a large area of power outages. Therefore, to solve the lack of reactive power capacity of the grid, install the reactive power compensation equipment, and improve the network power factor have a very important significance for the power saving, as well as safe and reliable operation .
(3) Optimization for the dust removal equipment and technology: to strengthen the optimization of technological transformation of dust removal equipment, organized emissions can meet global industry standards; strengthen clean production awareness, and improve work standards; strengthen the management to improve the level of maintenance, that is, electric dust collector should meet technical requirements in the aspects of electric field, polar plate, shaking and so on; bag dust collector should gradually selected new equipment to achieve clean production requirements.
(4) Reduce the ineffective operation of power equipment: improve the availability and reliability of equipment; reduce the no-load running time of the equipment when opening and stopping the cement production line. Use energy-saving lighting devices for office lighting, turn off the lighting devices when leaving.
(5) Economize on water: strengthen management and carry out proper transformation; stop equipment cooling water from long flowing.
(6) Prevent oil leakage: do well the equipment sealing work to prevent oil leakage, and use oil recovery equipment to reduce environmental pollution.
(1) Adopt high-performance insulation materials: use high-performance insulation materials to reduce heat dissipation when establishing or maintaining rotary kiln, cooler, preheater, hot air duct and other equipment.
(2) Reasonable process parameters: reasonably set the parameters for the ingredients, the coal and gas consumption of rotary kiln the outlet temperature of preheater primary cylinder and other production processes, to reduce the system air leakage, control the gas discharging from system, control material temperature, and reduce the total coal consumption amount.
(3) Strict management: the whole process from raw coal into the factory to putting into use should be brought into the scientific management system. In each production link of measurement, sampling, quality inspection, password sampling, storage and use, formulate a reasonable system, standardize the management, divide responsibility to specific people.
