Heat supply system optimization method

Abstract

The invention provides a heat supply system optimization method. The heat supply system optimization method comprises the steps that S1, the heat supply steam extraction amount is increased; s2, increasing the water supply flow of an external network, and increasing the total heat supply amount; s3, reducing the temperature difference of supply water and return water; s4, reasonably distributing the heat supply amount of the unit, and adjusting the heat supply steam extraction amount according to the vacuum change of the unit; and S5, the efficiency of the heating network heater is improved. The heat supply and steam extraction amount of the unit is increased by adjusting the heat supply and steam extraction butterfly valve; outer net water return pressure is reduced, a water return filter net is cleaned, and water supply flow is indirectly improved; the valve opening degree of the direct supply area is adjusted, the heat exchange area is increased, and the return water temperature of the direct supply area is reduced, so that the return water temperature of the whole pipe network is reduced; the heat supply steam extraction amount is reasonably distributed according to the operation vacuum of the two units, and the heat pump heating steam amount is preferentially met, so that the total coal consumption of the two units is reduced, the heat supply economical efficiency of the units is improved, economic benefits are created, and meanwhile, the method has important reference significance for optimization and adjustment of heat supply systems of other heat supply power plants.

Description

technical field [0001] The invention belongs to the technical field of energy saving of heating systems of thermal power plants, and in particular relates to a heating system optimization method. Background technique [0002] In order to meet the increasing demand for heat supply, the external heat supply area of ​​thermal power plants continues to expand, but subsequently, there is insufficient heat supply capacity, the heat supply and extraction volume of the heating system cannot reach the design value, the water supply flow rate is low and The problem of small temperature difference between heating network supply and return water seriously affects the safety and economy of unit heating. Contents of the invention [0003] The invention provides a heat supply system optimization method, which improves the economy of unit operation by tapping the heat supply potential, creates benefits for the enterprise, and enhances the safety and stability of the heat supply system ope...

AI Technical Summary

Problems solved by technology

[0002] In order to meet the increasing demand for heat supply, the external heat supply area of ​​thermal power plants continues to expand, but subsequently, the heating capacity is insufficient, the heat supply and extraction volume of the heating system cannot reach the design value, the water supply flow rate is low and The problem of small temperature difference between heating network supply and return water seriously affects the safety and economy of unit heating