chinese industrial hot water boiler for food factory

chinese industrial hot water boiler for food factory

The main heat loss of condensing power plant is that the heat of steam turbine exhaust is taken away by cooling water in condenser and can not be utilized. This part of heat loss usually accounts for 40% ~ 60%, so the efficiency of condensing power plant is not high. If the steam exhaust or exhaust steam of steam turbine is used for heating, the steam loss of steam turbine can be greatly reduced, and the energy utilization rate can be greatly improved by replacing the low efficiency and small boiler with high efficiency and large capacity boiler, if the steam exhaust or extraction steam of steam turbine is used for heating by the way of co-generation of heat and power. Therefore, great economic benefits can be obtained. It can be used to build large-scale thermal power plant, retrofit condensing power plant, heat supply and small and medium-sized thermal power plant provided by enterprises and other ways of co-generation.

Recently, China's 21th National Assembly HVAC academic year in "Swan City" - Sanmenxia City, Henan Province began. This annual meeting embodies the HVAC industry leading experts, technical design schools scientists, representatives of major HVAC manufacturers and industry media, nearly 20,000 HVAC colleagues attended the meeting.

First, before the operation of gas boiler, the total power to open and start the burner, the burner is to be noted Use of the purge valve when the steam boiler is completely out, then turned off.

Electric steam boiler of the heating process since the water temperature in the steam boiler power rising bubbles and an evaporator heating surface of the metal wall temperature began to rise at any time, need to pay attention to thermal expansion and thermal stress temperature, the wall thickness of the bubbles due to the relatively thick, the main problem in the electric steam boiler is heated during thermal stress. At the same time, but also consider the overall thermal expansion problems, especially for the electric heating surface of the steam boiler tubes, because the wall thickness, length of problems in the heating process is thermally integrated for expansion, but also noted that the thermal stress and prevent because of the neglect caused the failure. Generating steam in electric steam boiler and boost heating process, the temperature difference between the bubble there is a temperature difference along the thickness of the vertical wall and, when the temperature is higher than the outer wall temperature of the inner wall, the upper wall surface temperature is above the lower case, to prevent excessive thermal stress, the boiler must be slow step. Electric steam boiler ignition during the boost process, the steam parameters of the boiler, the water level and the working conditions of the various components is constantly changing. Therefore, in order to effectively prevent the occurrence of abnormal conditions and other hazards, be sure to arrange professional staff to closely monitor a variety of changes in the meter indication. By adjusting the control pressure, some of the process parameters of temperature, the normal water level in the range of the allowable, but also the reliability of the assessment, a variety of security instruments, valves and other components, so as to ensure adequate safety and stability of electric steam boiler run. The higher pressure steam boiler electrical energy consumption will be higher and higher, the corresponding steam pressure equipment and piping, and the valve will also increase accepted, which also makes the protection needs of conservation relative increase steam boiler, and steam generated in the heat generation and transport processes and also increase the proportion wandered.

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