Study hard and ask for a variety of power to unite and adjust. Study and test the unity and optimized operation of combustion power and renewable power, and ask renewable power plants and thermal power plants to form a unity and coordination unit, in which thermal power supplies peak regulation and frequency modulation help services for renewable power plants; unity and coordination unit is regarded as an overall listed in the power environment trend and takes over the power grid coordination organization's instructions. For areas where hydropower is the main part and wind power and photovoltaic power are also generated, as well as areas where wind power and photovoltaic power are developed intensively at the same time, we can ask for unity and coordination units to stop the coordination and operation of multiple power sources according to regions. New nuclear power projects will be built to connect with the reality of inland areas, and peak load regulating power sources such as pumped storage will be built.
For large-scale water tube boiler, FGR recirculation flue gas and fresh air are mixed with common air mixer. According to the difference of installation status, it can be divided into pre mixing and post pre mixing. Pre mixing means that the air mixing box is installed in front of the blower, after the flue gas is mixed with the fresh air, it will be sent to the incinerator for combustion after being connected to the blower. Before the mixed air enters into the blower, a drain valve will be arranged on the air duct to drain the condensed water. The anti-corrosion fan should also be selected for fan selection. After pre mixing, the air mix box is installed in the blower, and then the flue gas is sent to the air mix box through the re circulation fan, and mixed with the fresh air from the blower, and then sent to the incinerator for combustion. The commissioning condition of the blower is superior to that of the pre mixing. However, there will be a large number of condensate in the air duct, so the low points of the air mixing box and the flue gas duct should also be equipped with a drain valve.
Adhering to the control system is that we are impatient to put forward the excellent control mode, which has been widely used in Taixi. In China, a few industries and enterprises with high requirements have chosen this view of self-control. The focus idea is to eat the asphalt mixing building and the automatic control equipment of the incinerator at the same time, and hold accurate data-based control. This control mode has survived the original control Disadvantages, such as: evacuation, incompatibility, multi-point and multi-directional control, uneconomical and other questions.
Its advantages are obvious:
Optimize the software compatibility, unify the electric control, greatly improve the accuracy, and save energy
The continuity and safety of the planned construction are reliable, and the old capital is built with diligence and thrift
Simple man-machine interface temporary call
Control system is crucial
Improved handling, improved safety factor
The pure professionalism of debugging ensures safety and efficiency
The one-stop maintenance service has no continuity, greatly improves the obedience of things, and provides users with low-level service without cost
One key accessories, software, supply promotion guarantee
From the perspective of heat exchange calculation, it is important to increase the heat exchange surface, improve the heat exchange compliance of the heating surface, exercise a lower temperature cold source, improve the heat exchange temperature difference, and reduce the impact of erosion on the heat transfer compliance. As the main engine of the gas boiler, it starts to satisfy the requirements of furnace volume and flame size for low nitrogen incineration. Secondly, the convection heating surface in the main engine is to lower the flue gas temperature at the outlet of the main engine, which is generally controlled at 150-250 ° C, so as to avoid the difficulty in the plan of too high increase of flue gas temperature and flue heat preservation. Too low flue gas temperature will cause wall condensation and erosion on the convection heating surface of the furnace. Therefore, it is necessary to calculate Draw a proper amount of heating surface, and its external dimension more represents the furnace size. To increase the heat exchange surface, it is necessary to consider how to increase the heat exchange area of the building at the end of the boiler, which is more beneficial to the fast and low exhaust gas temperature. First, it is convenient to accept the new layout of similar high-efficiency finned tubes to increase the heat exchange surface and high heat exchange coefficient; second, it has a lower water inlet temperature, which can make the heat exchange temperature difference larger; third, it can accept the construction of erosion resistant materials and improve its application life. The new layout of high-efficiency heat exchange should be followed by the installation of staggered tube row, high-efficiency heat exchange fin tube, plate heat exchanger and other modes to increase the disturbance and contact of flue gas, reduce the stratified thermal resistance of flue gas, and improve the compliance of medium and flue gas heat exchange.
In terms of energy conservation, buildings belong to the hardware of energy conservation, but it's human element to double the importance. A good management team may exercise good people to control every joint, manage every energy-saving factor in operation, and continue to summarize the management and control level of the progress team, which is software. A company that faces up to the operation of energy-saving management, not only faces up to the construction of hardware, but also faces up to the construction of software. They are widely used in matching with high-end computer control system, exercising the excellent instrument of overall control, acquiring real operation data in a very large way, experiencing the artificial intelligence technology of computer system succeeding and improving, integrating the management mind of all aspects into the plan In the comparison method, we use new technology to actively control each node, reduce salary mistakes and omissions, and accurately control the boiler system to always operate in an efficient and energy-saving state. Therefore, a comprehensive, reasonable and excellent computer control system is a very good help for human management.
Energy saving is a general project, each node should be controlled, and a large number of human and material resources should be invested by the enterprise. The enterprise will continue to improve the management level, at the same time, it will continue to reap the effect of energy saving and consumption reduction, and create better economic benefits.
——Author：ebico