Distribution method of heat consumption of fuel gas and steam combined cycle combined heat and power generation unit

Abstract

The invention discloses a distribution method of the heat consumption of a fuel gas and steam combined cycle combined heat and power generation unit, and relates to the technical field of fuel gas andsteam combined cycles. The distribution method comprises the following steps that SS01, data collection is conducted, so that the total fuel consumption Bphi of a thermal power plant, the fuel lowerheating value Qnet, the heat Qb supplied out by the thermal power plant and the heat Q needed by users are obtained, wherein the unit of the total fuel consumption Bphi of the thermal power plant is Kg/h, the unit of the fuel lower heating value Qnet is KJ/Kg, the unit of the heat Qb supplied out by the thermal power plant is KJ/h, and the unit of the heat Q needed by the users is KJ/h. Accordingto the distribution method, the total heat consumption of the thermal power plant is distributed according to the proportion of the numbers of two kinds of manufactured products in the first embodiment, the total heat consumption of heat supply is distributed according to the ratio of the work, without doing, of combined generation heat supply steam bleeding steam flow in a steam turbine to the actual work of new steam in the second embodiment, the total heat consumption of heat supply is distributed according to the ratio of the work, without doing, of the combined generation heat supply steam bleeding steam flow in the steam turbine to the actual work of new steam in the third embodiment, and therefore the problem that the heat consumption of an existing fuel gas and steam combined cyclecombined heat and power generation unit is difficult to distribute is solved.

Description

technical field [0001] The invention belongs to the technical field of gas-steam combined cycle, and in particular relates to a method for distributing heat consumption of a gas-steam combined cycle heat and power cogeneration unit. Background technique [0002] The gas-steam combined cycle can greatly improve the thermal efficiency of the thermal power plant, solve the pollution problem, and promote the clean combustion of coal. Under certain circumstances, in order to improve the efficiency of the thermal system, it is necessary to achieve cascade utilization of energy, so as to make full use of the heat energy of each grade and improve the efficiency of the entire system. [0003] The hot steam in the gas-steam combined cycle heat and power cogeneration unit first generates electricity and then supplies heat. When using it, it is necessary to consider the heat consumption of the equipment for reasonable allocation, so as to improve the utilization rate of fuel. The index...

AI Technical Summary

Problems solved by technology

[0003] The hot steam in the gas-steam combined cycle heat and power cogeneration unit first generates electricity and then supplies heat. When using it, it is necessary to consider the heat consumption of the equipment for reasonable distribution, so as to improve the utilization rate of fuel. In addition to the production of electric energy, it must also consider The index of production heat energy, which makes the determination of heat consumption index of combined heat and power generation more complicated