31results about How to "Efficient Waste Heat Recovery" patented technology

The invention belongs to the technical field of gas boiler smoke waste heat recycling and film absorption, and relates to a smoke waste heat recycling system based on film absorption. The system comprises a gas boiler, a vacuum film water recoverer, a film bundle heat exchanger, an indirect heat exchanger, an air preheater, a heat supply pipe net, a chimney and the like. Smoke passes through a vacuum hollow fiber film bundle in the vacuum film water recoverer, water steam in wet smoke is separated from dry smoke, the dry smoke obtained after separation sequentially passes through the indirectheat exchanger and the air preheater, return water and air are heated through waste heat, meanwhile, the separated water steam enters the film bundle heat exchanger, primary heated return water in thewater tightness hollow fiber film bundle is further heated and is sent into the boiler or nearby secondary pipe net users, the water steam obtained after heat exchange is condensed, and water can bedirectly supplemented for the boiler. The system can achieve smoke dry and wet separation, heat energy in the water steam and the dry smoke obtained after separation can be efficiently utilized, waterresources are saved, and the phenomenon of chimney white smoke discharging is reduced.

The invention relates to the waste heat recovery field of high temperature solid materials, and particularly relates to a waste heat recovery device and a waste heat recovery method of combined high-temperature solid materials. The waste heat recovery device of the combined high-temperature solid materials comprises two units, wherein the first unit is a horizontal pneumatic transmission type solid-gas-liquid waste heat recovery unit, and the second unit is an integral vertical waste heat recovery unit; the first unit comprises a compressed air source (1), a PM (Particulate Matter) stock bin (2), a plurality of pneumatic conveying pipelines (3) driven by the compressed air source (1) and a horizontal pressure tank (4); the second unit comprises a vertical box body (11); feeding holes of the vertical box body (11) are hermetically connected with the outlets of the pneumatic conveying pipelines (3); the upper part of the vertical box body (11) is provided with a heat exchange pipe bundle structure, the middle part of the vertical box body (11) is provided with an evaporation freezing mask type wall structure, and the lower part of the vertical box body (11) is provided with a water cooling membrane type wall structure. According to the waste heat recovery device provided by the invention, physical heat in the high temperature PM can be recovered basically and completely, and the use ratio of steam can be improved greatly.

The invention relates to an energy-saving and low-dust emission coal-fired power generation system. The energy-saving and low-dust emission coal-fired power generation system comprises a boiler, a desulfurization tower and an electrostatic dust collector. The energy-saving and low-dust emission coal-fired power generation system is characterized in that a waste heat recovery system is arranged in the upstream direction of the desulfurization tower, and a dedusting system is arranged behind the desulfurization tower; a waste heat recovery system is arranged in the upstream direction of the desulfurization tower; or a dedusting system is arranged behind the desulfurization tower. The waste heat recovery system recovers heat in a high-temperature flue gas at a tail part of the boiler and sends the heat into a steam turbine heater, and comprehensive utilization of flue gas waste heat is achieved through saving of extraction flow of the heater. The invention provides an energy-saving and low-dust emission coal-fired power generation system, clean emission in a true sense is achieved through the waste heat recovery system and the dedusting system, and the energy-saving and low-dust emission coal-fired power generation system is simple, reliable and efficient.

The invention discloses a high-temperature flue gas waste heat recovery and advanced purification system. The system comprises a waste heat recovery module, a power generation module, an organic Rankine cycle heat exchanger and a dust removal purification module, wherein the gas inlet end of the waste heat recovery module is connected with a high-temperature flue gas inlet, the gas outlet end of the waste heat recovery module is connected with the dust removal purification module, two sets of tube type heat exchangers in different arrangement directions are arranged in the waste heat recovery module, a heat-exchange medium pipe outlet inside the waste heat recovery module is connected with the power generation module, the power generation module and the organic Rankine cycle heat exchanger are connected in series, and steam output through the organic Rankine cycle heat exchanger is subjected to refluxing through a condenser, passes through a working medium separator and then is connected to the waste heat recovery module and a heat exchange medium pipe inlet of the organic Rankine cycle heat exchanger. According to the high-temperature flue gas waste heat recovery and advanced purification system, a water working medium and an organic working medium are adopted and combined with electrolyzed high-temperature flue gas for three-time heat exchange, the purpose of utilizing heat of high-temperature flue gas to the maximum extent is achieved, the dust removal purification module is adopted for conducting advanced purification on cooled flue gas, energy conservation and emission reduction are achieved, and the economic benefit of enterprise production is improved.