Medium-and-low-temperature waste-heat utilization cooling/power combination system

Abstract

The invention relates to a medium-and-low-temperature waste-heat utilization cooling/power combination system which comprises a steam generator and a first-level steam-liquid separator, wherein the first-level steam-liquid separator is connected with the steam generator, a steam outlet of the first-level steam-liquid separator is communicated with a second-level steam-liquid separator through an expansion machine which is externally connected with an output power work load, a liquid outlet of the second-level steam-liquid separator and a liquid outlet of the first-level steam-liquid separator are respectively connected with a feed inlet of an absorber through pipes, a steam outlet of the second-level steam-liquid separator passes through the heat exchange side of a first heat regenerator, a condenser and an evaporator and then is connected with another feed inlet of the absorber, and a discharge outlet of the absorber is communicated with the steam generator through the other side of the first heat regenerator. The system disclosed by the invention simultaneously provides users with power output and a certain-grade cold flow, thereby realizing the effective utilization of waste heat, improving the energy utilization rate of the system, and meeting various needs of users.

Description

technical field [0001] The invention belongs to the field of industrial medium and low temperature waste heat recovery, and specifically relates to a cold / power cogeneration system for medium and low temperature waste heat utilization at 80°C to 250°C. Background technique [0002] In the industrial process, such as the production of industrial products such as cement and glass and the power generation process of power plants, a large amount of waste heat resources are discharged into the environment in various forms, which not only aggravates the urban "heat island effect" and causes serious environmental thermal pollution. At the same time, it also causes waste of energy, which is the main reason for the low energy utilization. The traditional recovery of industrial waste heat widely adopts organic Rankine cycle system and Karina cycle system. However, the traditional waste heat recovery cycle can only output power work or electric energy, and cannot output power and cooli...

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Problems solved by technology

[0002] In the industrial process, such as the production of industrial products such as cement and glass and the power generation process of power plants, a large amount of waste heat resources are discharged into the environment in various forms, which not only aggravates the urban "heat island effect" and causes serious environmental thermal pollution. At the same time, it also causes a waste

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