61results about How to "High utilization rate of waste heat recovery" patented technology

The invention provides a combined cycle thermoelectric conversion system utilizing multi-grade waste heat of an internal combustion engine. According to the system, combined organic Rankine cycle is formed by high-temperature grade cycle and low-temperature grade cycle, heat is supplied by exhaust waste heat of the internal combustion engine, supercharged and mid-cooling waste heat, exhaust gas recirculation waste heat and cooling water waste heat, a cooling quantity is provided by cold wind, and the system comprises a high-temperature grade working medium pump, a high-temperature grade heat regenerator, a high-temperature grade exhaust heater, a high-temperature grade EGR (exhaust gas recirculation) heater, a high-temperature grade expansion engine, a high-temperature grade condenser, a low-temperature grade working medium pump, a low-temperature grade heat regenerator, a low-temperature grade cooling water heater, a low-temperature grade supercharged air heater, a low-temperature grade exhaust heater, a low-temperature grade EGR heater, a low-temperature grade expansion engine, a low-temperature grade condenser, a low-temperature grade condenser fan and a power generator. According to the combined cycle thermoelectric conversion system utilizing multi-grade waste heat of the internal combustion engine, comprehensive and efficient utilization of multi-grade waste heat of the internal combustion engine can be achieved, further, irreversible loss is smaller when both the high temperature and the low temperature adopt supercritical expanding cycle, and the integral efficiency of the internal combustion engine can be effectively improved.

The invention relates to a high-temperature steel slag bottom blowing air cooling crushing waste heat recovery device and method. A crushing bed is adopted as a high-temperature steel slag treatment carrier, a crusher is adopted for efficiently crushing steel slag, meanwhile, cold air is introduced into a bottom blowing air cooling box to solidify and cool the high-temperature steel slag, and meanwhile, the crusher rotates at a certain speed, moves forwards and backwards and rotates to crush the steel slag. A heat exchanger and a generator are adopted for cooling the high-temperature steel slag to generate high-temperature waste heat for recovery and power generation. The crushing capacity is high, the steel slag treatment efficiency is greatly improved, and meanwhile, waste heat recoveryand power generation can be realized by adopting air cooling heat exchange. Efficient crushing and waste heat recovery of the high-temperature steel slag are realized, a steel slag water cooling system device is omitted, a simple dry dust removal mode is adopted to replace a wet flue gas treatment system caused by a previous water cooling process, the advantages of being high in automation degree,small in space occupation, good in leakproofness, low in system investment, capable of achieving ultra-clean emission and the like are achieved, and the comprehensive economic benefits of steel slagtreatment are improved.

The present invention discloses a titanium dioxide production process calcining tail gas processing method comprising the following steps: 1) dust removal; 2) preliminary heat exchange, to be more specific, calcining tail gas after the dust removal is discharged into a waste heat boiler system for heat exchange with process water, and the calcining tail gas is preliminarily calcined; 3) further heat exchange, to be more specific, the preliminarily-calcined calcining tail gas enters a venturi system and further cooled by spraying with spent sulfuric acid; and 4) desulfurization. According to the titanium dioxide production process calcining tail gas processing method, waste heat boiler system with high heat recovery utilization rate is used, and by step-by-step heat exchange, heat can be efficiently recovered from the calcining tail gas, and can be used for other processes in a titanium dioxide production line, energy and water consumption can be greatly saved, and by the desulfurization, desulfurization rate of the calcining tail gas is significantly increased.

The invention discloses a thermal power plant energy storage method and device with waste heat recovery. The thermal power plant energy storage device with waste heat recovery comprises a conveying pipe, a heating tank and a heat storage tank; a recovery pipe, a low-temperature pipe and a high-temperature pipe is fixedly connected to the bottom end of the conveying pipe through a four-way connector; a first electromagnetic valve is fixedly connected to the interior of the recovery pipe; a second electromagnetic valve is fixedly connected to the interior of the low-temperature pipe; and a thirdelectromagnetic valve is fixedly connected to the interior of the high-temperature pipe. The invention relates to the technical field of waste heat recovery. For the thermal power plant energy storage method and device with waste heat recovery, waste heat gases with different temperatures have different recycling modes, waste heat with different temperatures can be classified and utilized, and working pressure of the energy storage device with waste heat recovery is weakened; by combining a heating water tank device with a heat storage and release device, the waste heat recovery utilization rate is remarkably increased, the practicability of the device is improved, a phase change heat storage material is more uniformly heated, the utilization rate of the heat storage material is increased, and the heat storage efficiency is improved.

The invention discloses a system for desalting vacuum membrane distilled seawater by utilizing solar energy and after heat of diesel engine cylinder sleeve cooling water via cascade coupling. The system comprises a diesel engine cylinder sleeve cooling water circulation system, a solar energy hot water circulation system, a feed liquid circulation system, a heat exchanger I, a heat exchanger II, a membrane assembly, a condensation system and a vacuum collection system. After being preheated by a condenser, the seawater enters into a water supply pool and further undergoes cascade heating with the diesel engine cylinder sleeve cooling water and the solar energy hot water in sequence through the heat exchangers I and II to ensure that the temperature of fed seawater achieves the working temperature of the membrane assembly; and a fresh water steam outlet of the membrane assembly is connected with the vacuum collection system through the condensation system. The system has the advantages of being high in utilization rate of the after heat of the diesel engine cylinder sleeve cooling water, high in utilization rate of device energy and suitable for different working conditions, saving the manufacture cost of the fresh water and improving the yield of the fresh water.

A waste heat power station thermodynamic system processing the vacuum deoxygenation with a steam turbine condensator is a vacuum deoxygenatiom system using the chemical deionization water inside a condensator (2) connected with a stream filling and condensing steam turbine (1) for entering an AQC waste heat boiler (13) and a SP waste heat boiler (12) for water supply, which can markedly raise the waste heat utilance. The condensed water of 41-36 degrees can enter the water heating zone of the water heat boiler, heat the condensed water higher than 170 degrees, and reduce the discharging temperature of the waste gas to 100 degrees or so, which reasonably increases the recovery waste heat utilance.

The invention relates to the technical field of waste heat utilization of a float glass furnace, aiming at solving the technical problems which are present during the operation of waste heat generation systems of the traditional float glass furnaces, such as low recovery rate of waste heat, severe environmental pollution caused by emission of smoke containing a large amount of dust, unstable system operation and the like. A smoke outlet of the float glass furnace of the invention is communicated with a smoke inlet of a waste heat boiler; a smoke outlet of the waste heat boiler is communicated with an inlet of a waste heat draft fan; an outlet of the waste heat draft fan is communicated with an inlet of a rotary dryer through a flue, a charging hole is arranged above the inlet of the rotary dryer, an outlet of the rotary dryer is provided with a downward material outlet end and an upward flue respectively; the upward flue is communicated with a helical conveyor above which a dust collector is arranged; a discharge hole of the helical conveyor and a material outlet end of the rotary dryer are connected with a kiln head feeding bin, and a smoke outlet of the helical conveyor is communicated with a system draft fan and a chimney. The invention is suitable for the waste heat utilization of the float glass furnace.

The invention discloses a self-provided power station boiler and cement kiln waste heat recovery coupling system, and belongs to the technical field of cement production waste heat recovery and boilers. The self-provided power station boiler and cement kiln waste heat recovery coupling system comprises a kiln head waste heat recovery system, a rotary kiln waste heat recovery system and a power station boiler system; the kiln head waste heat recovery system comprises a grate cooler, a first dust removal device, a waste heat boiler, a second dust removal device, an induced draft device, a pressurizing air device and a connecting pipeline; the rotary kiln waste heat recovery system comprises an air supply device, an air heating device and a connecting pipeline; and the power station boiler system comprises a boiler, a primary air pipeline, a primary air preheater, a secondary air pipeline and a secondary air preheater. According to the self-provided power station boiler and cement kiln waste heat recovery coupling system, the overall power generation efficiency of a project for power generation can be effectively improved, the energy waste existing in the cement industry can be reduced, and the multiple purposes of effectively improving the overall power generation efficiency of the project for power generation, improving the operation efficiency of cement production and reducingthe operation energy consumption can be achieved.

The invention relates to an energy saving and emission reduction comprehensive purifying treatment technology of coke oven flue gas, and belongs to the technical field of metallurgy coking industry energy saving and emission reduction. An apparatus for enforcing the technology comprises a coke oven flue gas leading-out regulating valve, an induced draught fan, a waste heat recovery system, a flue gas dedusting system and a coke oven flue gas low temperature oxidation absorption system. The technology comprises the following steps: the coke oven flue gas goes through the leading-out regulating valve and the induced draught fan and enters the waste heat recovery utilization system to recovery waste heat of the flue gas and make the temperature of the flue gas decrease to below 150DEG C from 320DEG C, the cooled flue gas enters the flue gas dedusting system to reduce the dust particle content to below 30mg/Nm<3> from 150mg/Nm<3>, and the dedusted flue gas enters the low temperature oxidation absorption system to carry out desulphurization and denitration purifying treatment in order to reduce the SO2 and NOX content of the flue gas with the integral desulphurization and denitration efficiency being 85% or above in order to realize the coke oven flue gas energy saving and emission reduction comprehensive treatment purposes. The technology has the advantages of high coke oven flue gas waste heat recycling efficiency and good comprehensive purification effect.

The invention discloses equipment suitable for high-temperature molten material cooling and waste heat recycling. A molten material is fed into the middle of a roller pair from a feed inlet and is carried over along with the rotation of the two rollers so as to form a liquid film; cooling water enters a shell water-cooled wall through a water supply pipeline and absorbs sensible heat of the high-temperature molten material so as to enter the rollers through a pipeline and be sprayed to the inner wall surfaces of the cooling rollers through a nozzle group of a cooling spraying system; the cooling water absorbs heat of the inner walls of the rollers so as to be phase-changed into steam; solidification heat of the high-temperature molten material is absorbed; the steam is discharged through asteam discharge device; the sensible heat and the solidification heat of the high-temperature molten material during the cooling process are recycled through the water-cooled wall and the cooling water fed into the rollers, so that the waste heat recycling utilization ratio is high; and the high-temperature material can be quickly cooled through heat absorption for two times, so that the heat exchange efficiency is high, and the working efficiency is high.

The invention discloses a steam waste heat recovery device which comprises a recovery machine body and a heating table fixedly arranged at the left end of the recovery machine body, wherein a heatingcylinder is arranged at the top of the heating table; a heating cavity is formed in the heating cylinder; a heating net is arranged in the heating cavity; a steam inlet pipe extending leftwards is arranged at the bottom of the inner wall of the left end of the heating cavity in a penetrating manner; a reheating steam outlet pipe is arranged at the top of the heating cavity in a penetrating manner;a reheating steam inlet pipe is arranged in the recovery machine body; the extending tail end of the left end of the reheating steam inlet pipe penetrates through and stretches out of the end face ofthe left end of the recovery machine body and communicates with the reheating steam outlet pipe; and a connecting sleeve for sealing connection is arranged at the connecting part of the reheating steam inlet pipe and the reheating steam outlet pipe. The steam waste heat recovery device is simple in structure and convenient to operate and accommodate and improves the steam waste heat recovery efficiency and effect.

The invention provides a single regenerative denitrification burner, comprising: an air distribution port, a low temperature honeycomb heat storage chamber, a denitrification honeycomb heat storage chamber, a high temperature honeycomb heat storage chamber, an empty coal mixing chamber, corundum block bricks and a combustion air device , not only integrates the denitrification function into the regenerative burner, but also eliminates the need for the traditional regenerative burner to set up an ammonia zone and ammonia injection AIG device for denitrification treatment, simplifies the structure of the device, and can be adapted to specific sites with limited space Moreover, it can effectively reduce the content of nitrogen oxides in the flue gas produced by traditional regenerative burners, and the denitrification efficiency can reach about 75%. In addition, the device can effectively reduce the exhaust gas temperature and improve the utilization rate of flue gas waste heat recovery , has a series of advantages such as simple structure, convenient operation, low operating cost, high efficiency and energy saving, environmental protection, high heat storage and denitrification efficiency.

The invention discloses a heat-conducting oil boiler waste heat power generation system. The heat-conducting oil boiler waste heat power generation system comprises a furnace body, a spray nozzle, a flue gas pipe and an air pipe, wherein a furnace hearth for heating heat-conducting oil is arranged inside the furnace body; the spray nozzle is arranged in the end wall of one side of the furnace body and is used for spraying fuel and combustion air into the furnace hearth for combusting and releasing heat; the flue gas pipe is connected to the end wall of the other side of the furnace body and is used for discharging flue gas from a flue gas outlet of the furnace body to a chimney; the air pipe is connected to the spray nozzle and is used for conveying the combustion air to the spray nozzle; the heat-conducting oil boiler waste heat power generation system further comprises a water steam circulating power generation circuit; the water steam circulating power generation circuit comprises a steam generator arranged inside the flue gas pipe, and a steam turbine connected with the steam generator through a pipeline.

The invention relates to the field of energy recycling, aims to solve the problems of fresh water shortage and low energy utilization rate in remote coastal areas, and provides a coastal area cement production and seawater desalination combined implementation system and method. The coastal area cement production and sea water desalination combined implementation method is characterized in that waste heat of a cement system is used for sea water desalination through heat exchange of an AQC boiler, an SP boiler and a BP boiler. The device has the beneficial effects that the device is very suitable for remote coastal areas, cement production and seawater desalination can be organically combined, the energy utilization rate is high, and fresh water and cement can be produced at the same time.

The invention discloses a waste heat recovery device of an industrial kiln, and relates to the technical field of industrial kiln equipment. The device specifically comprises a kiln body. When the device is used, a heat insulation box, a heat preservation coating outside the heat insulation box and a heat absorption pipe are arranged, in a using process of the kiln body, heat dissipated by the kiln body through surface radiation can be effectively recycled, a waste heat recovery rate of the kiln body is increased, the cost is saved, the situation that the heat is directly scattered into the atmosphere to cause climate warming is prevented, environmental protection is facilitated, after firing is completed, a first control valve and a second control valve are opened, a fan is started, and the fan introduces external airflow into the heat insulation box via an air conveying pipe and then introduces the external airflow out of the heat insulation box via an air outlet pipe, so that the cooling speed of the kiln body can be increased, collection of fired objects in the kiln body and next-time material distribution of the kiln body are facilitated, and the production efficiency of the kiln body is improved.

The invention belongs to the field of combustion equipment and particularly relates to a multifunctional radiant tube combustion device, comprising a side A combustion radiant tube, a side B combustion radiant tube and a transitional radiant tube, wherein two ends of the transitional radiant tube are connected to one ends of the side A combustion radiant tube and the side B combustion radiant tube respectively, and the other end of the side A combustion radiant tube is sequentially provided with an air/fuel gas mixed gas inlet or a smoke outlet, a low-temperature heat accumulator, a denitration catalyst area and a porous medium layer area. The multifunctional radiant tube combustion device has the advantages that smoke discharge temperature can be decreased effectively, smoke waste heat recycling rate is increased, energy-saving effect is significant, smoke denitration measures are applied to the radiant tube combustion device, denitration and energy conservation are integrated, nitrogen oxide emission from smoke is reduced effectively, the system is more environmentally friendly, and comprehensive input cost is lowered.