Heat tube bundle concentric casing tube waste heat recovery boiler

Abstract

The invention relates to a heat tube bundle concentric casing tube heat-recovering boiler including a heat exchanger, a steam drum or hot water tank, a flue gas heat collection case, a tube system, the invention is characterized in that the heat exchanger is heat tube bundle concentric double pipe exchanger, more than one set of heat exchanger is arranged on upside cover plate of the flue gas heat collection case, metal fever tube of the heat exchanger is plugged in the flue gas collection heat flow path of the flue gas heat collection case, inner tubes of each set of the are connected in series, series-parallel or parallel by the tube system, and a tube opening of the inner tube of at least a set of heat exchanger has a water-supply tube interface of boiler connected, and a tube opening of the inner tube of at least a set of heat exchanger is communicated with the steam drum or hot water tank with a union tube. The invention has advantages of concentric inner casing tube being circulation column tube of the exhaust-heating boiler, high heat-recovering-using efficiency, compact conformation, dependable performance, thereby being a desired apparatus for small temperature differential waste heat recovery and utilization. The apparatus not only can generate medium, high temperature steam, but also high temperature hot water or assembly utilization. The invention can be abroad used for energy conservation, discharge reduction and environmental conservation of energy-intensive industry such as chemical industry, stone oil industry, electric power industry, coal industry, building material industry etc.

Description

Technical field: [0001] The invention relates to a waste heat recovery boiler with concentric sleeve pipes of heat pipe bundles. Background technique: [0002] In the past 10 years, China's economy has developed rapidly, people's living standards have been continuously improved, and the demand and consumption of energy have also increased rapidly. Primary energy consumption mainly includes fossil fuels such as coal, oil and natural gas. Due to the limited oil reserves in our country, nearly 50% of the crude oil currently depends on imports. In addition to the new round of oil crisis, coal is still the main source of fuel and power in my country. The environmental problems caused by coal burning have become a must in my country's sustainable development strategy. Treat the problem. Recently, the Chinese government has paid great attention to energy resources and environmental issues, and actively adopted countermeasures to encourage the development of renewable energy and en...

AI Technical Summary

Problems solved by technology

[0003] Medium and low temperature tail gas / flue gas emissions exist widely in various industries, most of which are not well utilized or directly discharged, resulting in waste of energy and pollution to the environment

Due to the relatively backward domestic heat recovery technology and low recovery efficiency, the recovered heat has a low grade and low utilization value

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