United efficient waste-heat power generation system of industry low heating value effluent

Abstract

The invention relates to a united efficient waste-heat power generation system of industry low heating value effluent. The system comprises a low temperature and low pressure waste-heat boiler, a low temperature and low pressure steam conduit, a high temperature overheating low pressure waste-heat boiler, a high temperature and low pressure waste heat steam turbine, a high temperature and low pressure set condensation and deoxygenization system, a low pressure boiler feed pump and a low pressure water supply pipe. The system has the beneficial effects of effectively increasing the low temperature and low pressure steam output, improving the waste heat recovery rate, and improving energy utilization ratio by carrying out energy source stepped combined utilization; compared with intensive and integrated high temperature and low pressure set, the system can change low efficiency and overlapping investment of the existing distributed low temperature and low pressure set, and can save land, energy source, resource, manpower and fund.

Description

technical field [0001] The invention relates to an industrial waste heat power generation system, in particular to a combined high-efficiency waste heat power generation system for industrial low calorific value emissions, and belongs to the field of industrial energy conservation and environmental protection. technical background [0002] In the industrial production process, there are both high calorific value emissions and large quantities of low calorific value emissions. At present, the waste heat utilization of industrial low calorific value emissions mainly adopts conventional waste heat power generation (drive) technologies and systems such as simple low-temperature and low-pressure units. [0003] The main characteristics of the current low-temperature and low-pressure waste heat power generation technology: first, a certain degree of waste heat recovery and utilization; second, the energy consumption per unit of electricity is relatively large, and the thermal effi...

AI Technical Summary

Problems solved by technology

[0004] What is particularly serious is that the current technology research and development and equipment manufacturing industry cannot keep up with the pace of energy conservation and emission reduction development. The current waste heat power generation (drive) main equipment and systems are still technically designed and manufactured in accordance with conventional power technologies and standards. The main technologies and standards They are: high temperature and high pressure, medium temperature and medium pressure, low temperature and low pressure and other types of units. The pure low temperature and low pressure units developed in recent years have not targeted the iron and steel industry, so the domestic iron and steel industry and waste heat power generation have high energy consumption and low production efficiency.

[0005] As we all know, the advantages of using water as the working medium are economical and safe, and the disadvantages are the high energy consumption and low thermal efficiency of the liquid-gas phase transition of water.

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