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

The invention discloses an anti-dew point corrosion waste heat recovery system. The main pipe (14) is connected with a main pneumatic valve (18) and a secondary pneumatic valve (22) through a booster pump (15). The main pneumatic valve (18) passes through the first The valve (11) is connected to the inlet of the heating end of the temperature compensator (7), and the outlet of the heating end of the temperature compensator (7) is connected to the heat pipe heat exchanger (1) through the second valve (5) and the third valve (2) for heat exchange The inlet, the heat exchange outlet of the heat pipe heat exchanger (1) are connected to the inlet of the cooling end of the temperature compensator (7) through the fourth valve (4) and the fifth valve (6), and the outlet of the cooling end of the temperature compensator (7) passes through the fourth valve (4) and the fifth valve (6). The seven valves (12) are connected with a mixer (21), the auxiliary pneumatic valve (22) is connected with the mixer (21) through the eighth valve (20), and the outlet of the mixer (21) is connected with the sixth valve (25). This system has the functions of cold fluid temperature self-compensation and heat exchanger wall temperature adjustment, which effectively solves the problem of low-temperature dew point corrosion of the heat exchanger, prolongs the service life of the heat exchanger, and can efficiently recover the waste heat of low-temperature flue gas, achieving the effect of energy saving and emission reduction .

The invention provides a waste heat recycling furnace. According to the waste heat recycling furnace, waste heat of sintered ore can be sufficiently and efficiently recycled. The waste heat recycling furnace comprises a cooling cylinder. A feeding opening is formed in the upper surface of the cooling cylinder, a sealing cover for sealing the feeding opening is arranged on the feeding opening, an air outlet is formed in the upper end of the side wall of the cooling cylinder and connected with an induced draft fan, a conical cold feeder is connected to the lower end of the cooling cylinder, a discharging opening is formed in the lower end of the cold feeder, a vibration discharging machine is installed in the discharging opening, a center cooling air pipe extending to the center of the cooling cylinder is installed on the waste heat recycling furnace, a conical center air cap with the upward top end is connected to the upper end of the center cooling air pipe, a plurality of air holes are formed in the conical wall of the center air cap, one or more peripheral cooling air pipes are formed on the conical wall of the cold feeder in the mode of surrounding the conical wall, a discharging mechanism is arranged between the cooling cylinder and the cold feeder and comprises an upper discharging plate and a lower discharging plate, and the upper discharging plate and the lower discharging plate can be opened and closed and can achieve discharging through reciprocating movement.

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 discloses a dry-type granulation treatment waste heat recovery system which comprises a slag storage bin, a granulation cooling unit, a primary waste heat recovery unit, a secondary waste heat recovery unit and a tertiary waste heat recovery. The system is characterized in that the top of the granulation cooling unit is provided with a first air outlet; the first air outlet is connected with a high-temperature booster fan through a pipeline; a granulator is arranged in the granulation cooling unit, positioned below a charging pipe and driven by a rotating shaft to rotate; the primary waste heat recovery unit is arranged below the granulation cooling unit; the bottom of the primary waste heat recovery unit is provided with a first fluidized bed and a slag discharge pipe; the slag discharge pipe is communicated with the secondary waste heat recovery unit; the bottom of the secondary waste heat recovery unit is provided with a spray bed; and the upper part of the secondary waste heat recovery unit is communicated with the upper part of the tertiary waste heat recovery unit. The system implements the dry-type granulation function and high-efficiency waste heat recovery, and can be widely used in the fields of steel, metallurgy and the like.

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 multi-stage low-temperature waste heat recovery system based on supercritical carbon dioxide, including a supercritical carbon dioxide multi-stage waste heat recovery cycle system, and a new heat exchange system that provides cold sources for the entire system; the new heat exchange system includes The first-stage new heat exchanger is installed. The carbon dioxide in the low-temperature heat exchanger exchanges heat with the circulating cooling medium through the first-stage new heat exchanger, and the carbon dioxide from the first-stage new heat exchanger enters through the large temperature difference heat exchange unit. to the second-stage new heat exchanger, and conduct heat exchange with the circulating cooling liquid, and finally form a low-temperature carbon dioxide working fluid and return to the low-temperature heat exchanger for heat exchange with low-temperature flue gas, and carry out the next stage of circulation. The low-low temperature multi-stage waste heat recovery and utilization system with critical carbon dioxide as the working fluid, after heat exchange at 6 places in the first-stage regenerator, the high-temperature working medium is divided into two paths, which improves the efficiency of waste heat utilization.

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.