56results about How to "Improve waste heat power generation efficiency" patented technology

The invention discloses a single-pressure recovery generating system of waste heat of a dry method cement production line, being capable of improving generating efficiency. The kiln head grate cooler of the single-pressure recovery generating system is provided with at least two gas picking-up openings including a high-temperature gas picking-up opening and a moderate-temperature gas picking-up opening. A high-temperature superheater is arranged in the system; the high-temperature gas picking-up is connected to the gas inlet of the high-temperature superheater; the moderate-temperature gas picking-up opening is connected to the gas inlet of an AQC (Air Quench Cooler) boiler; the steam outlet of the AQC boiler and the steam outlet of a kiln tail SP (Suspend Preheater) boiler are connected to the steam outlet of the high-temperature superheater; the steam outlet of the high-temperature superheater is connected to a steam turbine, which makes the primary superheat steam of the kiln tail SP boiler and the AQC boiler obtain reliable secondary superheating in the high-temperature superheater; moderate-temperature flue gas and the heat-exchanged flue gas of the high-temperature superheater are taken as the heat source of the AQC boiler to realize the stepwise recovery of the energy of the flue gas of the waste heat of the grate cooler, increase steam enthalpy and improve effective enthalpy drop; the steam quality is improved and the flow is reduced, which reduce the exhaust loss of the waste heat in a condenser of the steam turbine and promote the improvement of waste heat generating efficiency.

A device with a griddle and a process for generating power by efficiently recycling sinter waste heat relate to the technical field of waste heat power generation. The device comprises a sinter cooling system, a waste heat power generation system and a smoke system. The sinter cooling system and the waste heat circulation power generation system are connected through the smoke system to form a loop. The process includes 1) sinter cooling, 2) the smoke system and 3) waste heat power generation. The device and the technological process for waste heat power generation have the advantages of completely utilizing waste heat discharged in the sinter cooling process, obviously increasing power generation quantity, obviously reducing system self power utilization rate and being remarkable in energy-saving effect.

The invention discloses a waste heat power generation system based on blast furnace superconducting cooling. The waste heat generating system mainly comprises a blast furnace body (1), a power generation system (12), a steam utilization device, one or more superconducting ring-shaped heat exchange rings (2) arranged along the side wall of the blast furnace body (1) in a layered encircling manner, poured solidified bodies (10), and lower guide pipes (32), wherein the poured solidified body is arranged on each superconducting ring-shaped heat exchange ring and made from a wear-resistant heatproof anti-seismic carburizing-proof elastic castable refractory; each lower guide pipe is used for being connected with the lower circulation opening of the corresponding superconducting ring-shaped heat exchange ring in series. According to the waste heat power generation system, hot water subjected to heat exchange is centrally discharged through the superconducting ring-shaped heat exchange rings embedded on the side wall of the blast furnace body and a ring-shaped pipeline system corresponding to the superconducting ring-shaped heat exchange rings, so that the heat exchange intensity is enhanced, the heat exchange efficiency and the cooling efficiency are improved, the temperature of traditional cooling water is increased to 250 DEG C from 40 DEG C, and can be increased to 400 DEG C after the traditional cooling water passing the superconducting ring-shaped heat exchange rings twice, so that the cooling waste heat can be utilized to realize power generation.

The invention provides a combined cooling-heating-power system. The combined cooling-heating-power system comprises a gas internal combustion engine, an exhaust gas discharging loop, a cylinder sleeve cooling water loop, a low-temperature cooling water loop, a heat supply loop, a lithium-bromide absorption-type refrigerating machine, a supercritical carbon dioxide cycle subsystem, and an organic working medium cycle subsystem. The invention further provides a combined cooling-heating-power method. The method comprises the steps that the gas internal combustion engine works and drives an electric generator to generate electricity, released waste heat is recycled and utilized through the exhaust gas discharging loop, the cylinder sleeve cooling water loop and the low-temperature cooling water loop, waste heat of the gas internal combustion engine is distributed, the effect that cold energy, heat energy and electric energy of different proportions are output to the heat supply loop, the supercritical carbon dioxide cycle subsystem and the organic working medium cycle subsystem is achieved, and combined cooling, heating and power supply is achieved. According to the combined cooling-heating-power system and method, the combined supercritical carbon dioxide and organic working medium cycle efficiency is high, and the waste heat electricity generation efficiency and output power of the gas internal combustion engine are remarkably improved. The combined cooling-heating-power system is simple, compact in structure, low in cost and capable of being applied to distributed energy resources.

The invention discloses an eliminating type coke oven afterheat recovery power generating system based on a voltage stabilizing power supply circuit. The eliminating type coke oven afterheat recovery power generating system mainly consists of a coke oven top big pit and an oven top cylinder brick covering the top surface of the coke oven top big pit, wherein a perforated steel plate, a heat insulation plate layer and a perforated steel plate are sequentially arranged inside the coke oven top big pit from bottom to top, a heat insulation brick layer arranged between the perforated steel plate and the heat insulation plate layer is formed by filling heat-resistant sealing slurry in an inside gap part of the coke oven top big pit, a heat exchanger and an evaporator forming a sealed loop are arranged outside the coke oven top big pit, an afterheat power generating system is also arranged on the evaporator, an afterheat control circuit is arranged in the afterheat power generating system, a static electricity eliminating circuit, an overcurrent protection circuit, a control type power supply circuit, a voltage stabilizing power supply circuit and a control type output circuit are arranged in the afterheat control circuit, and the overcurrent protection circuit, the control type power supply circuit, the voltage stabilizing power supply circuit and the control type output circuit are in sequential connection.

The invention discloses a current source feedback type waste heat generating system based on blast furnace superconducting cooling. The current source feedback type waste heat generating system based on the blast furnace superconducting cooling mainly comprises a blast furnace body (1), an electrical power generating system (12), a steam utilizing device, more than one superconducting annular heat exchange ring (2) which is hierarchically arranged along the side wall of the blast furnace body (1) in a surrounding manner and a waste heat control treatment system. The current source feedback type waste heat generating system based on the blast furnace superconducting cooling has the advantages that hot water after heat exchange is discharged in a concentrated manner by virtue of the superconducting annular heat exchange rings which are embedded in the side wall of the blast body and a corresponding annular pipeline system, so that heat exchange intensity is improved, heat exchange efficiency and cooling efficiency are improved; and temperature of the traditional cooling water is increased to 250 DEG C from 40 DEG C, and then the traditional cooling water is overheated to 400 DEG C by applying the superconducting heat exchange rings twice, so that cooling waste used for power generation is realized.

The invention discloses a blast furnace superconductive cooling waste heat power generation system based on a bias adjustable current source. The system is mainly formed by a blast furnace body (1), a power generation system (12), a steam utilization device, more than one superconductive annular heat transfer ring (2) in layered encircling arrangement along the side wall of the blast furnace body (1), pouring solidification bodies (10) made of wear-resisting heat-shock-resistant anti-permeability coal elastic refractory castables and arranged on each superconductive annular heat transfer ring (2), and lower conduits (32) connected in series with a lower circulation port of each superconductive annular heat transfer ring (2). According to the system, hot water obtained after heat transfer is exported in a concentrated manner through the superconductive annular heat transfer rings embedded in the side wall of the blast furnace body and annular pipeline systems corresponding to the superconductive annular heat transfer rings, so that heat transfer intensity is enhanced, heat transfer efficiency and cooling efficiency are improved, and cooling water temperature is improved from the original 40 DEG C to 250 DEG C; and then, the water is overheated to a temperature of 400 DEG C through twice applications of the superconductive annular heat transfer rings, and thus the cooling waste heat is allowed to be utilized for power generation.

The invention discloses a protection type coke oven waste heat recovery power generation system based on a boost power supply circuit. The system is mainly composed of a coke oven top large pit and oven top quarry tiles covering the surface of the top of the coke oven top large pit. A porose steel plate, a heat insulation plate layer and a porose steel plate are sequentially arranged in the coke oven top large pit from bottom to top. Heat preservation brick layers between the porose steel plates and the heat insulation plate layer are formed by filling the inner gaps inside the coke oven top large pit with heat-resisting sealing slurry. A heat exchanger and an evaporator which form a closed loop are arranged outside the coke oven top large pit. A waste heat power generation system is arranged on the evaporator. A waste heat control circuit is arranged in the waste heat power generation system. An over-current protection circuit, a control type power supply circuit, the boost power supply circuit and a control type output circuit are connected in sequence and arranged in the waste heat control circuit.

The invention discloses a coke oven top waste heat recycling and electricity generation system based on an efficient drive power source circuit. The coke oven top waste heat recycling and electricity generation system is mainly composed of a large coke oven top pit and oven top quarry tiles covering the surface of the top of the pit. The large coke oven top pit is internally and sequentially provided with a porous steel plate, a heat insulation plate layer and the porous steel plate from bottom to top. A heat preservation tile layer arranged between the porous steel plates and the heat insulation plate layer is formed by pouring heat-resisting sealing slurry into seams of the large coke oven top pit. A heat exchanger and an evaporator for forming a sealing loop are arranged outside the large coke oven top pit. The evaporator is further provided with a waste heat electricity generation system. The waste heat electricity generation system is internally provided with a waste heat control circuit. The waste heat control circuit is internally provided with a control type power circuit, the efficient drive power source circuit, and a control type output circuit which are sequentially connected.

The invention discloses an alarm type coke oven waste heat recovery power generation system based on a power supply adjustment circuit. The system is mainly formed by a coke oven top large pit and oven top clinker tiles which cover the top surface of the coke oven top large pit. The internal part of the coke oven top large pit is orderly provided with a perforated steel plate, a heat insulation plate layer and a perforated steel plate from bottom to top. A heat preservation tile layer arranged between the perforated steel plate and the heat insulation plate layer, and the internal gap of the coke oven top large pit is filled with heat resistant sealing slurry. The external part of the coke oven top large pit is provided with a heat exchanger and an evaporator to form a closed loop. The evaporator is provided with a waste heat power generation system which is internally provided with a waste heat control circuit. The waste heat control circuit is internally provided with a power-off alarm circuit and is also provided with an overcurrent protection circuit, a control type power supply circuit, a power supply adjustment circuit and a control type output circuit which are connected in order.

The invention discloses a wet protection type coke oven after heat power generating system based on a stabilization power supply circuit. The wet protection type coke oven after heat power generating system based on the stabilization power supply circuit mainly consists of a coke oven top hollow place and oven top cylinder bricks covering the surface of the top thereof. A porous steel plate, a heat insulation plate layer and another porous steel plate are sequentially arranged inside the coke over top hollow place from top to bottom. Heat preservation brick layers are arranged among the porous steel plates and the heat insulation plate layer; and a heat-resisting sealing pulp is filled inside the seam of the coke oven top hollow place. A heat exchanger and an evaporator forming an enclosed loop are arranged outside the coke oven top hollow place. The evaporator is further provided with an after heat power generating system. An after heat control circuit is arranged inside the after heat power generating system. The after heat control circuit is provided with a thermal induction automatic switching circuit, and a controlled power supply circuit, a stabilization power supply circuit as well as a controlled output circuit that are sequentially connected with one another.

The invention discloses a warning type coke oven waste heat recovery power generation system based on a boosting power supply circuit. The warning type coke oven waste heat recovery power generation system based on the boosting power supply circuit is mainly composed of a big coke oven top pit, oven top clinker bricks which cover the top surface of the big coke oven top pit, a porous steel plate, an insulation board layer and a porous steel plate arranged in the big coke oven top pit in sequence from the bottom to top, an insulating brick layer arranged between the porous steel plate and insulation board layer, and heat-resistant sealing slurry filled in a gap in the big coke oven top pit, a heat exchanger and an evaporator which form a closed loop are arranged at the outside of the big coke oven top pit, the evaporator is further provided with a waste heat power generation system, a waste heat control circuit is arranged in the waste heat power generation system, and the waste heat control circuit is provided with an outage warning circuit, and an over-current protection circuit, a control type power circuit, the boosting power supply circuit and a control type output circuit connected in sequence.

The invention discloses a current source-based bipolar oscillating type waste heat power generating system. The current source-based bipolar oscillating type waste heat generating system mainly comprises a blast furnace body (1), a power generation system (12), a steam utilization device, more than one superconductive annular heat exchange ring (2) arranged along the side wall of the blast furnace body (1) in a layered surrounding type, a waste heat control processing system and the like. According to the current source-based bipolar oscillating type waste heat power generating system, hot water subjected to heat exchange is concentrately guided out through the superconductive annular heat exchange rings embedded in the side wall of the blast furnace body and an annular pipeline system corresponding to the superconductive annular heat exchange rings, so that the heat exchange strength is increased, the heat exchange efficiency and the cooling efficiency are improved, and in addition, the temperature of cooling water in a traditional mode is increased to 250 DEG C from 40 DEG C, and is overheated to 400 DEG C after being treated by the superconductive heat exchange rings twice, and thus cooling waste heat can be used for power generation.

The invention discloses a thermal protection type coke oven waste heat electricity generation system based on a boost power circuit. The thermal protection type coke oven waste heat electricity generation system is mainly composed of a large coke oven top pit and oven top quarry tiles covering the surface of the top of the pit. The large coke oven top pit is internally and sequentially provided with a porous steel plate, a heat insulation plate layer and the porous steel plate from bottom to top. A heat preservation tile layer arranged between the porous steel plates and the heat insulation plate layer is formed by pouring heat-resisting sealing slurry into seams of the large coke oven top pit. A heat exchanger and an evaporator for forming a sealing loop are arranged outside the large coke oven top pit. The evaporator is further provided with a waste heat electricity generation system. The waste heat electricity generation system is internally provided with a waste heat control circuit. The waste heat control circuit is internally provided with a thermal automatic switching circuit, a control type power supply circuit, the boost power circuit and a control type output circuit, wherein the control type power supply circuit, the boost power circuit and the control type output circuit are sequentially connected.

The invention discloses a protection-type coke oven waste heat recovery and power generation system based on a power adjustment circuit. The protection-type coke oven waste heat recovery and power generation system mainly comprises a coke oven top big hole and oven top clinker tiles covering the top surface of the big hole; the coke oven top big hole is internally provided with a porous steel plate, a heat insulation plate layer and a porous steel plate in sequence from bottom to top; a heat preservation brick layer is arranged between each porous steel plate and the heat preservation plate layer and is formed by pouring heat-resistant sealing slurry in internal slots of the coke oven top big hole; a heat exchanger and an evaporator which form a closed loop are arranged outside the coke oven top big hole; a waste heat power generation system is also arranged on the evaporator; a waste heat control circuit is arranged in the waste heat power generation system; an overcurrent protection circuit, a control type power circuit, the power adjustment circuit and a control type output circuit which are sequentially connected are arranged in the waste heat control circuit.

The invention discloses a thermal induction type coke oven waste heat recovery power generation system based on a stabilized power supply circuit. The system is mainly composed of a coke oven top large pit and oven top quarry tiles covering the surface of the top of the coke oven top large pit. A porose steel plate, a heat insulation plate layer and a porose steel plate are sequentially arranged in the coke oven top large pit from bottom to top. Heat preservation brick layers between the porose steel plates and the heat insulation plate layer are formed by filling the inner gaps inside the coke oven top large pit with heat-resisting sealing slurry. A heat exchanger and an evaporator which form a closed loop are arranged outside the coke oven top large pit. A waste heat power generation system is arranged on the evaporator. A waste heat control circuit is arranged in the waste heat power generation system. A control type power supply circuit, the stabilized power supply circuit and a control type output circuit which are connected in sequence and a thermal induction automatic switching circuit are arranged in the waste heat control circuit.

The invention discloses a trilinear drive type waste heat power generation energy-saving control system based on overvoltage and overcurrent protection. The system is composed of a blast furnace body (1), a power generation system (12), a steam utilizing device, two or more annular superconduction heat exchange rings (2) which are annularly arranged along the side wall of the blast furnace body (1) in a layered mode, a waste heat control and treatment system and the like. The waste heat control and treatment system comprises a diode rectifier U, a voltage stabilization and transformation circuit, a three-terminal voltage stabilizing control circuit and a trilinear driving circuit. The trilinear drive type waste heat power generation energy-saving control system is characterized in that an overvoltage and overcurrent protection circuit is further connected in series between the voltage stabilization and transformation circuit and the trilinear driving circuit. According to the trilinear drive type waste heat power generation energy-saving control system, due to the annular superconduction heat exchange rings which are embedded in the side wall of the blast furnace body and annular pipeline systems corresponding to the annular superconduction heat exchange rings, hot water produced after heat exchange can be led out in a concentrated mode, and heat exchange efficiency and cooling efficiency are improved; besides, due to the fact that the superconduction heat exchange rings are applied twice to be overheated to 400 DEG C, cooling waste heat can be used for generating electricity.