42results about How to "Full use of waste heat" patented technology

The invention relates to double loop double pyrolysis incinerator and its using method. Its features are that drying apparatus is formed by horizontal rotary kiln drying device, steam separator, and fume reflux line; the feed port of the horizontal rotary kiln is connected with discharge port of the feeding device; its discharge port is connected with the feed port above secondary burning chamber. While running, part of high temperature fume of secondary burning chamber can enter the rotary kiln to process reverse drying preheat and pyrolysis for the garbage; cooled fume is inducted into the secondary burning chamber by secondary fan after dehydrating by steam separator. Compared with exiting technique, the invention has the advantages of continual heat transfer, fast gasification rate, full burning, processing domestic garbage without auxiliary fuel etc.

The invention relates to a continuous pyrolysis incineration device for full-scale electronic and electrical product waste. The continuous pyrolysis incineration device structurally comprises a feeder, a pulley feed hopper, a pyrolysis gasifier, a pyrolysis gas flue, a combustion furnace, a G-L air heat exchanger, a quenching absorption tower, a bypass flue, a chimney exhaust port, a cat ladder, an activated carbon storage tank and a chimney. The continuous pyrolysis incineration device has the advantages that dangerous electronic and electrical product waste, medical waste, organic waste and other kinds of dangerous combustible solid waste with a certain heat value are treated through a pyrolysis incineration technology, pyrolysis and high-temperature incineration technologies are combined in an optimized mode, low-temperature gas and high-temperature melt are combined together, waste incineration is conducted in the steps of pyrolysis, premixing and incineration, the synthetic technological process and technological conditions of pyrolysis incineration, energy recovery and flue gas cleaning are achieved and have perspectiveness, the overall technology has the outstanding harmless characteristic, compatibility and resourcezation are remarkable, material applicability is high, no hazardous reaction medium or poisonous and harmful solvent is involved in the process, and nature greenization can be achieved.

The invention discloses a method and a system for utilizing engine waste heat. The system comprises an engine cylinder body and a cooling water jacket outside the engine cylinder body, wherein the cooling water jacket is provided with a plurality of spray heads; each spray head is connected with a water tank through a water pump; the cooling water jacket is provided with a steam outlet; the steam outlet is connected with a steam driving device; the steam driving device is connected with an electric generator; and the electric generator is connected with a storage battery. The method and the system provided by the invention are particularly suitable for gasoline-electric hybrid automobiles. Steam kinetic energy produced by cooling an automobile engine is continuously and dynamically converted into electric energy, so that an automobile storage battery is charged continuously, the construction of a special charging station for hybrid electric vehicles can be avoided, resource investment can be saved greatly, the rapid development of the gasoline-electric hybrid automobiles is promoted and the international development trends of energy conservation and emission reduction are conformed.

The invention discloses a seal structure between a wind chamber and the lower part of a sintering ring cold machine trolley of a steel and iron plant, which mainly comprises an outer seal piece, a seal contact plate and inner-side seal rubber, wherein the outer seal piece consists of a seal piece strut member, an outer limit plate, an inner limit plate, an elastic rubber cylinder, rubber in the shape of a seal groove, a support plate and an adjustable connection screw rod, the support plate is arranged in the rubber in the shape of a seal groove and is connected with the seal piece strut member through the adjustable connection screw rod in an adjustable way, outer seal is realized through the rubber in the shape of a seal groove and the seal contact plate, and inner seal is realized through the inner-side seal rubber. The invention improves the efficiency of smoke recycle and the quality of smoke utilization, fully recycles smoke, effeciently uses cold residual heat of sintering rings, decreases maintenance cost of the seal piece and shortens service life.

The invention provides an asymmetrically-arranged heat exchanger. The heat exchanger comprises a collecting pipe, left coil pipes and right coil pipes are distributed on the left side and the right side of the collecting pipe respectively; the heat exchanger is characterized in that the left coil pipes and the right coil pipes are arranged at intervals, one right coil pipe is arranged between every two adjacent left coil pipes, and one left coil pipe is arranged between every two adjacent right coil pipes. The heat exchanger can be used for carrying out reinforcing heat exchange and soot removal at different heights, and the effects of reinforcing heat exchange and removing accumulated dust are achieved.

The invention relates to a cooking utensil, in particular to a steam generator for a kitchen. The steam generator for the kitchen comprises a shell and is characterized in that the shell is provided with a steam generation cavity, a smoke collecting cavity and a smoke exhausting cavity sequentially from bottom to top; a tube plate is arranged between the steam generation cavity and the smoke collecting cavity; a gas stove installing cavity is arranged outside a bottom plate; the steam generation cavity comprises a plurality of smoke tubes installed in the vertical direction; the lower ends of the smoke tubes penetrate through the bottom plate and extend to the outside of the shell, and the upper ends of the smoke tubes penetrate through the tube plate to extend to the smoke collecting cavity; a steam output pipe is arranged on the steam generation cavity; and a smoke exhausting outlet is formed in the top of the smoke exhausting cavity. The smoke exhausting cavity is further provided with a heat exchange tube set, the two ends of the heat exchange tube set are provided with a water injection port and a water outlet correspondingly, and the water outlet is supplemented to the steam generation cavity through a pipeline. The steam generator for the kitchen has the beneficial effects that the steam generation efficiency is high, the structure is simple, maintenance is convenient, and the steam generator can be conveniently connected with other steaming utensils through pipelines and is clean and hygienic.

This invention discloses a two-step process for producing melamine from urea under normal pressure. The method comprises: (1) blowing urea with ammonia into a reactor, mixing with ammonia from a circulation machine, preheating and blowing the catalyst from the bottom of the reactor to fluidize; (2) discharging the reactant from the top of the reactor, removing the catalyst dust by an outer filter, introducing into a collector, cooling naturally and condensing to obtain melamine; (3) purifying the circulation gas from the collector with an absorbing column to absorb carbon dioxide; (4) reacting the mother liquor obtained in step 3 and carbon dioxide obtained by the decarbonization of ammonium bicarbonate to obtain ammonium carbonate; (5) cooling the purified circulation gas, introducing into the circulation machine, concentrating, and passing into the reactor. Compared with present techniques, the method has such advantages as low raw material cost, high profit, easy control, simple process and reliable operation.

The invention discloses a method for retrofitting a coal-fired boiler into a biomass boiler. The method comprises the following steps that firstly, a splitting decomposition combustion chamber is arranged behind a front arch and in front of a primary combustion chamber; secondly, a secondary combustion chamber is arranged behind the primary combustion chamber; thirdly, a smoke waste heat utilization device is arranged behind a boiler body, and a first water pipeline used for injecting water in a boiler barrel penetrates the smoke waste heat utilization device, so that water in the first water pipeline is preheated by smoke exhausted out of flues; and fourthly, a dust removal device is connected to the smoke waste heat utilization device. The existing coal-fired boiler is retrofitted and changed into the biomass boiler for burning biomass fuel, and biomass fuel is adopted, is low in carbon and environment-friendly and saves energy; the smoke waste heat utilization device is arranged to preheat the first water pipeline, heat exchange efficiency is high, smoke waste heat is fully utilized, and fuel can be saved; and the overall existing coal-fired boiler does not need to be replaced, and the investment cost is low.

The invention discloses a box type evaporator for waste heat utilization of high-temperature solid materials and belongs to the field of cooling equipment for the high-temperature solid materials. The box type evaporator is characterized in that an outer cylinderl (2) and an inner cylinder (1) are combined to form a sleeve type header; the lower end of a heat exchange box (7) is open; the sleeve type header seals the upper end of the heat exchange box (7); a feeding port (4) communicated with the inner cylinder (1) is arranged at the upper part of the sleeve type header; a water-cooled spiral distributor for conveying and cooling the materials is arranged inside the inner cylinder (1); a heat exchange cavity is arranged on the side wall of the heat exchange box (7) ad is communicated with an inner cavity of the outer cylinder (2); multiple isolating mechanisms are arranged inside the heat exchange box (7) in parallel and divide the heat exchange box (7) into multiple material channels; and the materials in the inner cylinder (1) fall into the material channels via discharge ports (6). Both the sleeve type header and the heat exchange box of the box type evaporator for waste heat utilization of the high-temperature solid materials can bear pressure, so that the evaporator can be directly applied to production of steam, and waste heat of the high-temperature materials is efficiently utilized.

The invention discloses a system used for coal-fired power plant waste-heat utilization and desulfuration water saving. The system comprises a steam turbine, a first-level heat exchanger, a second-level heat exchanger, a condensate pump and an air pre-heater. The air inlet end of the steam turbine is connected with a boiler, and the exhaust air output end of the steam turbine is connected with the air inlet end of a condenser. The first-level heat exchanger is arranged in an absorption tower slurry pond at the bottom of a desulfuration absorption tower. The second-level heat exchanger is arranged between the desulfuration absorption tower and a dust remover, and the liquid inlet end of the second-level heat exchanger is connected with the liquid outlet end of the first-level heat exchanger. The liquid outlet end of the second-level heat exchanger is connected with an inlet pipeline of a fifth-level low-pressure heater. The air outlet end of the dust remover is connected with the air inlet end of the second-level heat exchanger. An outlet pipeline of the fifth-level low-pressure heater is connected with the boiler. The liquid inlet end of the condensate pump is connected with the liquid outlet end of the condenser, and the liquid outlet end of the condensate pump is connected with the first-level heat exchanger. The air inlet end of the air pre-heater is connected with the boiler, and the air outlet end of the air pre-heater is connected with the air inlet end of the dust remover.

The invention relates to a sintering ore grate furnace cooling and waste heat utilization device and waste heat utilization method. The device is sequentially provided with a sintering machine (1), acrusher (2), a hot screen (3) and a grate furnace (4). The grate furnace (4) comprises a feeding opening (401), a fire grate (402), air inlet cavities (403) and a discharging opening (404). High-temperature waste gas above the fire grate is recycled to be utilized through the waste heat utilization device, the utilized waste gas enters the air inlet cavities below the fire grate or an air cover ofthe sintering machine, and a cycle is formed. According to the device and waste heat utilization method, the problems of cooling machine air leaking, waste gas waste heat resource waste and environment pollution in the prior art can be solved, the problem of high power consumption of a vertical tank type cooling air blower can be reduced, and total utilization of sintering ore waste gas waste heat resources can be achieved.

The invention relates to a process and apparatus for dry suspension sintering flash smelting of ferronickel, belonging to the field of ferronickel production processes and apparatuses. The process comprises the following steps: 1) drying; 2) grinding; 3) multi-stage suspension pre-reduction; 4) sintering reduction; and 5) flash furnace smelting. Flue gas with waste heat from flash furnace successively enters a sintering furnace and a multi-stage suspension pre-reduction system; the heat and a reducing agent in the flue gas act on the links of pre-reduction and sintering reduction, so the wasteheat is utilized, and energy consumption is reduced; and mineral materials in the flue gas settle down in a preheating system and then return to a melting system, so productivity is enhanced and theemissions of pollutants are lowered. Material flow in the whole system operates in a closed loop, and exhaust gas is purified and then discharged after reaching the standard. The apparatus comprises adrying device, a grinding device and a dry suspension sintering device, wherein the drying device, the grinding device and the dry suspension sintering device are sequentially connected. The processand apparatus of the invention has the advantages of low investment cost, obvious energy saving effect, no consumption of electricity and coke, greatly-reduced power consumption, substantially-loweredcost for reducing agents, full utilization of exhaust gas and waste heat and high automation degree.

The invention relates to the field of waste heat utilization, in particular to a boiler waste heat utilization water heater. The boiler waste heat utilization water heater comprises a hopper, a smokeinlet, a water feeding mechanism, first water valves, water pipes, a water box, supporting frames, a box body, a water drainage mechanism, water drainage pipes, second water valves, temperature gauges, a supporting mechanism, supporting rods, a supporting plate, heating mechanisms, first water heating boxes, second water heating boxes, a blocking mechanism, a first fixing plate, a baffle, a secondfixing plate, a smoke outlet and a sealing mechanism. According to the boiler waste heat utilization water heater, the side walls of the two ends of the box body are provided with the smoke inlet andthe smoke outlet correspondingly, the heating mechanisms distributed in a staggered mode are installed in the box body, waste gas enters the box body to make sufficient contact with the heating mechanisms, and thus, heat in the waste gas enters the heating mechanisms; and the side wall of the box body is rotationally connected with the sealing mechanism, the sealing mechanism is rotated so that the interior of the box body can be opened, the hopper is installed at the bottom end of the box body, dust inside the box body is removed through a shovel, and accordingly, dust in the box body and dust on the side walls of the heating mechanisms are discharged from the hopper.

The invention discloses a waste heat collecting cover of a cooking range. The waste heat collecting cover comprises a collecting cover body, an isolation layer and a heat exchange water pipe; the top and the bottom of the collecting cover body are each provided with an opening, and the opening in the top of the collecting cover body is sealed through a heating body; the opening in the bottom of the collecting cover body, and the collecting cover body is placed on the cooking range; the isolation layer is arranged in the collecting cover body to separate space in the collection cover body into a heating area and a waste heat collecting area, and a fire spraying opening of the cooking range is placed in the heating area; the top of the heating area and the top of the waste heat collecting area are communicated, and waste heat for the heating area enters the waste heat collecting area from the top of the heating area; the heat exchange water pipe is arranged in the waste heat collecting area; and the heat exchange water pipe is arranged around the isolation layer, one end of the heat exchange water pipe stretches out of the collecting cover body to be communicated with a water source, and a discharging opening controlled by a valve is formed in the position, arranged on the collecting cover body, of the other end of the heat exchange water pipe.

The invention relates to a waste heat utilization device of a phenol ammonia recovery system. The waste heat utilization device of the phenol ammonia recovery system comprises a phenol ammonia recovery device and a waste heat utilization device body, wherein the phenol ammonia recovery device comprises a horizontal pipe cooler, a sour water stripping tower, an ammonia recovery system, a crude phenol extraction tower, a solvent circulation system, a crude phenol product tower and a raffinate treatment tower, and the waste heat utilization device body comprises a hot water circulation system, afirst heat exchanger, a second heat exchanger, a third heat exchanger, a fourth heat exchanger and a refrigerating system. The waste heat utilization device of the phenol ammonia recovery system is compact in structure, reasonable in process and sufficient in waste heat utilization, can achieve the purposes of energy conservation and efficiency improvement, can be transformed on similar devices, reduces the operating cost of the devices and improves economic benefits.