Provision of Energy-saving and Consumption-reducing Technological Renovation and Economic Performance Optimization Guidance
Environmental protection has become a global theme of the century, saving energy, reducing cost and increasing efficiency has become a pressing concern in the power industry, we can provide customers with energy-saving and consumption-reducing technological renovation of power generation equipment and economic operation optimization guidance, the purposes of reducing consumption rate of supplied coal and auxiliary power rate can be ultimately realized, for examples:
A、Energy-saving renovation of turbine steam seal, usually in the construction phase of the unit, the installation agency reserves a relatively larger clearance of steam seal in order to ensure the safety of the unit while being started up regardless of the turbine's economic performance. The data can reach design values by replacing with the energy-efficient steam seal gland and adjusting the gap, the turbine steam consumption rate is effectively reduced, thus the coal consumption of the unit is greatly minimized.
B、Energy-saving renovation of condensate extraction pump and feedwater pump. Usually the designer will reserve a lager space in head, flow and other parameters in the type selection of main pumps, with "a-big-horse-pulling-a-small-car" phenomenon, the pump output can be adjusted to a reasonable range of the actual needs through the means of energy-saving renovation of the pump body or increase of the motor frequency converter according to the design data and actual system parameters, therefore the effect of reducing the auxiliary power and saving the coal is achieved, meanwhile, safe operation of equipment and systems can be ensured.
C、Energy-saving renovation of pulverized coal burner. For the reasons of coal quality and boiler combustion conditions, the wear of burner and burning loss of ejector nozzle is more serious, which leads to combustion instability, parts falling off, slag conveyor jamming and increases safety risks. The design and renovation of the burner can be optimized pursuant to the actual situation of our customers to improve the reliability of the burner and reduce the failure rate, and NOx content is greatly reduced, carbon content of bottom ash and fly ash is decreased at the same time Subsequently the energy-saving level is improved.
D、Fuel oil saving renovation of the burner. Usually the oil burner supplied by the boiler equipment manufacturer avails big consumption of oil and difficulty in firing and other issues in the actual operation, the oil burner and igniter design can be optimized according to the actual situations of coal of the customer, so that fuel oil consumption will be greatly decreased through the renovation.
E、Turbine valve sequence energy-saving optimization. Normally the steam turbine factory designs valve open sequence and steam distribution curve in accordance with unit operating at load of 90% -100%, but due to coal quality, power demand from the state grid and other factors, the unit actually runs not within the design loading range in a long term, which increases the turbine valve throttling losses and affects the energy-consuming level. Provided that the safety is ensured, the steam valve sequence and steam distributing curve can be optimized in accordance with the customer's actual operation to reduce throttling losses and improve the economic operation level of the turbine.
F、Economic operation and energy-saving optimization. Typically the major equipment manufacturer and the Design Institute install many drain valves in the design of thermal system, as the valve quality issues and the actual system operating conditions changing, steam-water system leaks internally on site, and increase energy consumption loss to a great extent. The steam-water system, in the precondition of meeting the safe and reliable operation of the unit, can be integrated and optimized through site investigation, so the unnecessary loss of steam water is greatly decreased and energy-saving level is improved.
G、Medium-speed coal mill energy-saving and optimizing renovation. Because of coal quality, the medium-speed coal mill consumes a big amount of primary air, the stone coal discharge is much higher than the design values, which leads to the serious environmental pollution and high coal mill energy consumption. The coa! mill and the stone coal discharge delivery system can be reformed by combining the actual site situation of the customer, which will greatly decrease energy consumption.
H、ESP high-frequency power energy-saving renovation. Usually the ESP configured transformer and current regulation mode will consume large electric energy, optimized transformation can be made to ESP power-supply system through using high-frequency power supply and optimizing the adjustment mode, thus the precipitation efficiency of ESP system will be increased while energy consumption be decreased.
I、 We provide the energy-saving reformation for APH. Usually, the sealing device supplied by the Boiler Suppliers could not reach the ideal effect and the design magnitude. At the same time, since the fuel gas abrasions and some other reasons, the sealing performance of sealing device upplied by boiler suppliers would decline, which leads to APH air-break augment and the economy efficiency decline. We are capable to supply better sealing device with better performance and better quality and technology reformation. While the performance of the sealing device is improved , the life of it would lengthen as well. We could guarantee the air-beak rate is always controlled at about 5% t the life of sealing device is not less than a repai-cycle (5-6 years ).
