Modularized steam waste pressure and waste heat power generation and balanced steam and heat supply system

Abstract

The invention relates to a modularized steam waste pressure and waste heat power generation and balanced steam and heat supply system, which belongs to the field of industrial and civil waste heat and waste pressure power generation and steam and heat supply. The system comprises a backpressure-type steam turbine, a generator, valves and connecting pipelines; a high-pressure steam inlet pipe is connected with a main steam inlet of the backpressure-type steam turbine through a power generation control valve; the high-pressure steam inlet pipe is also connected with a first low-pressure steam supply pipe through a temperature and pressure reduction valve; an exhaust outlet of the backpressure-type steam turbine is connected with a first low-pressure steam supply pipe through a first steam supply control valve; a shaft of the backpressure-type steam turbine is connected with a shaft of the generator; and the output end of the generator is connected with a power grid through a grid-connected device. According to the modularized steam waste pressure and waste heat power generation and balanced steam and heat supply system, the common problem that the irreversible loss is too high because high-pressure steam is delivered to steam heat users with different pressure requirements in the manner of temperature and pressure reduction in practical projects at present is solved, and the benefit of the comprehensive utilization of energy of a whole thermodynamic system is improved. The scheme of the system can be generally popularized to all steam users.

Description

technical field [0001] The invention belongs to the field of industrial and civil waste heat and pressure power generation and steam supply and heat supply, and particularly relates to a modularized steam waste pressure and waste heat power generation and balanced steam supply and heat supply system. Background technique [0002] There are a large number of steam heat users in the industrial and civil fields, and even many industrial and mining enterprises such as chemical plants and pharmaceutical plants have various processes with different pressure and temperature levels and steam consumption. The pressure and temperature parameters of steam turbine extraction etc. are often selected with high parameters to meet the parameter requirements of users with the highest pressure and heat. As a result, steam with higher pressure and temperature grades needs to be reduced in temperature and decompression once or even multiple times. It can be sent to the corresponding end of stea...

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Problems solved by technology

[0004] However, none of the above-mentioned technical measures for generating power by utilizing residual energy resources such as residual pressure and residual heat are not suitable for the widely existing problem of large or small pressure difference energy loss between steam supply and heat user demand, for example CN201010162555.8 The method cannot solve the demand of steam heat users for different steam parameters and their matching problems

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