645results about How to "Improve heat utilization efficiency" patented technology

A closed multi-room fluidized bed sludge drying method is provided, which is a sludge drying method having the advantages of simple equipment structure, convenient operation, strong sludge adaptability, high thermal efficiency, safety, continuity, stability, etc. After the mechanically dewatered sludge is mixed with the back-mixed sludge, the mixture is dried room by room in an inert particles multi-room fluidized bed dryer (3). The first room and the second room of the inert particles multi-room fluidized bed dryer (3) adopt inert particles (f) as heat storage medium. Gas from a cyclone separator (5) goes through a spray tower (7) and returns into an air heating unit (4) through a circulating fan (10). Part of dried sludge (e) at the lower part of the cyclone separator (5) enters the inert particles multi-room fluidized bed dryer (3) through the back-mixing in a mixer (2). Waste liquid from the bottom of the spray tower (7) enters a waste liquid circulating pool (8), with part of waste liquid circulating into the spray tower (7) and part into a sewage treatment system.

The invention provides a cooking device which comprises a shell and a hot-air flow generation device, wherein the shell is provided with a food cooking chamber, and the hot-air flow generation deviceis arranged at the top of the food cooking chamber. The hot-air flow generation device comprises a blowing device and a heating device positioned below the blowing device, the blowing device is used for generating flowed air flow, the heating part heats the air flow generated by the blowing device to form heated air flow, a blowing cover is arranged at the top of the food cooking chamber and completely covers the upper outer side of the blowing device and the heating device, the food cooking chamber is provided with side walls, at least parts of side walls are provided with air flow guide devices, and parts of heated air flow passes the air flow guide devices, then changes the flowed direction of the heated air flow and is scattered to the surface of food. According to the cooking device,the heated uniformity degree of the food in the making process can be improved, the quality and the taste of the food are improved, harmful heat is timely discharged in the making process of the food,and working stability of the device is improved.

The invention discloses a supercritical multisource multielement thermal fluid injection-production system and injection-production method. The system comprises a supercritical multisource multielement thermal fluid generating system and an oil tube. The oil tube is arranged in an exploiting shaft; the supercritical multisource multielement thermal fluid generating system comprises a supercritical gasification reactor and a supercritical mixed combustion reactor; in the presence of supercritical water, a gasification reaction is performed on fuel slurry in the supercritical gasification reactor, and the gasification product of the reaction and oxygen-containing gas dissolved in the supercritical water combust in the supercritical mixed combustion reactor to form a supercritical multisource multielement thermal fluid containing supercritical water and carbon dioxide; the supercritical mixed combustion reactor is connected to the oil tube. The supercritical multisource multielement thermal fluid injection-production system provided by the invention has the effects that thermal efficiency is high, the viscosity of thickened oil is reduced, the flowability of the thickened oil is improved and the recovery efficiency is increased.

The present invention relates to the method and unit to utilize the energy of waste gas of internal combustion engine to generate hydrogen and oxygen and to improve burning state of internal combustion engine. The electricity generating and hydrogen generating unit consists of waste gas turbine converting the energy in waste gas into mechanical energy, electricity generator converting the mechanical energy into electrical energy, water electrolyzer utilizing the electrical energy to electrolyze water into hydrogen and oxygen and electric controller. The hydrogen and oxygen are fed to the internal combustion engine for catalyzing hydrocarbon fuel inside the internal combustion engine to improve burning, increase power output and reduce exhaust.

A hydrogen production by methanol system includes a methanol supplying device, a water supplying device and a hydrogen production by methanol device. The methanol supplying device and the water supplying device communicate with an inlet of the hydrogen production by methanol device including a hydrogen production activator, a selective oxidation reactor of carbon monoxide and an oxidative gas supplying device. An outlet of the hydrogen production by methanol device and the oxidative gas supplying device both communicate with the inlet of the selective oxidation reactor of carbon monoxide including a selective oxidation activator of carbon monoxide which comprises the alloy of a platinum or the platinum and a palladium andor a rhodium. The hydrogen production by methanol system provided bythe present invention can produce the mixed gas of hydrogen, in which the concentration of the carbon monoxide is less than 50 parts per million and does not cause an oxidation or a blast of the hydrogen.

The invention relates to a method for preparing nano fluid for a heat transfer medium of a solar heat exchange system, which comprises the following steps: selecting one of Al2O3, TiO2, ZnO, Ni and Cu nano grains with the grain diameter of 5 to 100 nanometers as additive, selecting water or water/ethylene glycol or water/propylene glycol mixture as base solution, adding surfactant into the solution, and strongly stirring and ultrasonically oscillating to form the nano fluid which is used for the heat transfer medium of the solar heat exchange system, wherein the Al2O3, TiO2, ZnO, Ni or Cu nano grains account for 0.1 to 3 volume percent of the volume of the nano fluid. The practical detection result for placing the solar heat exchange system on the roof shows that the nano fluid can remarkably improve the heat collecting efficiency of the solar heat exchange system, has the advantages of high heating speed, low cooling speed, low cost and simple preparation process and can remarkably improve the heat collection and heat utilization efficiencies of the existing solar heat collecting system.

The invention provides an ABS powder drying method, comprising a step of powder drying and a step of powder recovery. In the step of powder drying the technology of utilization of waste heat of condensed water comprises conveying the steam condensed water in a nitrogen heater to a buffer hot water tank as heating medium hot water in a heater. A slurry recovery tank is connected to a bottom portion of a washing tower. The upper portion diameter of the washing tower is slightly bigger than the bottom portion diameter. No filling material and no tray floor are arranged inside the washing tower. The washing tower is provided with a demister, and second spray water in the upper portion of the washing tower. A split-range controller is arranged on the top portion of the washing tower. A first fire extinguishing device is installed in a fluidized bed dryer. A second fire extinguishing device is installed at the exit port of a cyclone separator. An oxygen detector is installed at a nitrogen inlet side of the nitrogen heater. The method of the invention has the advantages of full utilization of the waste heat, energy saving and consumption reduction, heat utilization efficiency improvement, short process flow, reduction of powder loss, reduction of equipment investment, high operation flexibility and stability in the whole technology process, a good ABS separating effect, and good safety performance.

The invention discloses a device for recycling heat radiated from a rotary cement kiln shell body, comprising a plurality of heat transfer covers arranged on the upper section of the rotary cement kiln shell body. Each of the external surfaces of the heat transfer covers is provided with an insulating layer, sealing equipment is arranged between the two ends of the heat transfer covers and the rotary cement kiln shell body, a sealing heat transfer cavity is formed by the inner surfaces of the heat transfer covers and the external surface of the rotary kiln shell body via the sealing equipment, the bottom of the heat transfer covers is provided with an inlet which is communicated with the heat transfer cavity, the top of the heat transfer covers is provided with an outlet which is communicated with the heat transfer cavity, the bottom of the heat transfer covers is connected to a slip fitting so as to realize the axial displacement. The sealing equipment comprises a permanent seat on the external surface of the rotary cement kiln shell body, and one side of the permanent seat is provided with a dynamic sealing ring; the bottom of the dynamic seal ring is hermetically connected to the rotary cement kiln shell body by a temperature resistant rubber I, and a self-propelling stationary seal ring is arranged between the dynamic seal ring and the head face of the heat transfer cover; the top of the self-propelling stationary seal ring is hermetically connected to the head face of the heat transfer cover by a temperature resistant rubber II, the self-propelling stationary seal ring is connected to an elastic stationary seal ring, and a sealing gland is arranged between the elastic stationary seal ring and the dynamic seal ring.

The invention discloses a polygeneration technology for gradient utilization of low-rank coal. According to the polygeneration technology, a circulating fluidized bed combustion boiler, a circulating fluidized bed dry distillation reactor and a circulating fluidized bed gasification reactor are taken as cores; series power generation equipment achieves gradient cyclic utilization of low metamorphic coals; the low-rank coal is firstly subjected to lignite wax extraction after crushing and drying, and then enters a brown coal pyrolysis reactor; a raw gas of the gasification reactor is adopted as a fluidizing agent; tar and the raw gas are obtained after dry distillation; semicoke enters the gasification reactor to carry out partial gasification; a part of coal gas is generated as a fluidizing agent of a dry distillation reactor; incompletely gasified semicoke enters the combustion boiler as a fuel; heat and steam generated by combustion are applied to power generation; a by-product low-pressure steam can be used as a raw material of the gasification reactor; the high-temperature semi-coke and hot ashes obtained by combustion enter the dry distillation reactor and the gasification reactor as heat carriers, so as to finish a cycle. By adopting the polygeneration technology, the economic value of the low-rank coal can be obviously improved, emission of pollutants can be significantly reduced by gradient cyclic utilization, and the technology is safe and reliable.

The invention discloses a waste heat recovering efficient gas stove. A hot air tube (9) for supplying air and matched with a gas tube (7) is arranged on a stove body (5), a hearth of the stove body (5) is provided with a porous ceramic medium (6) covering the gas tube (7) and the hot air tube (9) to form a combustion chamber, a smoke recovering channel (18) is formed between a side wall of the porous ceramic medium (6) and a hearth side wall of the stove body (5), a cooker can seal a hearth port when placed on the hearth port, a heat exchange tube (4) is arranged in the stove body (5), an air blower (1) is connected with an air inlet of the heat exchange tube (4), an air outlet of the heat exchange tube (4) is connected with the hot air tube (9), a smoke inlet of the heat exchange tube (4) is connected with a smoke recovering channel (18), and a smoke outlet of the heat exchange tube (4) is connected with a chimney (3). The waste heat recovering efficient gas stove can effectively improve heat efficiency, reduce pollutant discharge and improve chef working environment.

The invention discloses a method for large-scale preparation of carbon, gas, oil and liquid by thermal cracking of biomass materials; the method includes the following production steps: material pulverization-drying and molding-thermal cracking-cooling and separation; in the invention, waste heat in a cooling system and a thermal cracking system is induced into a drying and molding system for drying materials, biomass fuel gas obtained by cooling and separation is burned to provide heat for thermal cracking, surplus biomass fuel gas is stored and used as industrial or domestic fuel. In thermal cracking, a plurality of thermal cracking reactors are taken as one batch to form one row which is positioned in a thermal cracking furnace. The method can raise comprehensive heat utilization efficiency of the system, greatly reduce unit energy consumption of products, improve the operating efficiency of the system, achieve outstanding energy-saving effect, shorten molding time of products, reduce heat emission and effectively control thermal pollution, thus achieving significant environmental production benefits. The method can realize large-scale production and has the capacity of treating tens of thousands of tons of raw materials every year.

The invention belongs to the technical field of refrigerating and heat pumps and particularly relates to an ejection-absorbing hybrid refrigerating and heat pump unit and an operating method thereof. The unit comprises generators, a condenser, an evaporator, an absorber, a solution heat exchanger, a solution pump, a solution throttle valve, a coolant throttle valve, a steam generator and a gas ejector. By providing one or multiple steam generators, outlet temperature of a high-level drive heat source of the unit can be decreased, utilization efficiency of heat and hierarchy of coolant steam pressure are increased, and the gas ejector can be conveniently set according to different pressure level; high-temperature high-pressure steam generated by the steam generator allow coolant steam to be ejected from outlets of the generators to the condenser, thereby decreasing the high-level heat source temperature of the generators; the coolant steam from an outlet of the evaporator can also be ejected to the absorber so as to enhance absorbing pressure of the absorber and reduce the size of the absorber; the coolant steam from the outlet of the evaporator can also be ejected to the condenser to increase refrigerating and heating quantity of the unit and improve comprehensive thermal performance of the unit.

The invention relates to an electric heating system and a control method thereof. The electric heating system comprises an electric heat storage boiler unit, a water circulation unit, a heat pump main body unit, a climate compensator and a control unit, wherein the electric heat storage boiler unit is connected with the water circulation unit connected with a heat supply zone through an inner circulation pipe of a first heat exchange unit; the heat pump main body unit is connected with the water circulation unit connected with the heat supply zone through an inner circulation pipe of a second heat exchange unit; and the climate compensator and the control unit are separately connected with the electric heat storage boiler unit, the heat pump main body unit and the water circulation unit. According to the technical scheme provided by the invention, when electricity usage is at a low trough, circulating water can be independently or simultaneously heated by the heat pump and the electric heat storage boiler, so that the problem that the temperature rise of the heat pump is limited is solved, the heat utilizing efficiency is increased, and the energy source is saved; and at the same time, electric energy is converted to heat energy and stored in a heat storing body by the electric heat storage boiler, and when electricity usage is at a high peak, the heat can be released by the electric heat storage boiler through the heat storing body to heat the circulating water and realize indoor heating, so that the electricity usage pressure of a power grid is relieved, and electricity fees are saved for a user.

A rotation type reflow soldering furnace comprises a furnace body, a furnace door, an impeller, a rotation control device, a tray, a tray position adjusting device, a vacuum pump and a temperature controller. The rotation type reflow soldering furnace is characterized in that the furnace body is formed by intersection of a cylinder and a cuboid equal in height, the furnace door is arranged on the wall of the furnace body, the furnace body is divided into a loading zone, a heating zone, a buffering zone and a cooling zone, a hot plate is arranged in the heating zone, a cold plate is arranged in the cooling zone, the impeller is arranged in the furnace body and connected with the rotation control device in a circuit manner, a to-be-soldered electronic component and a solder tray are placed between two blades, a vacuum pipe is connected with the heating zone via a pipeline, and the temperature controller is connected with the hot plate and the cold plate via circuits. The rotation type reflow soldering furnace has the advantages that the rotation type reflow soldering furnace has an independent heating system and an independent cooling system, and can perform non-interfering heating and cooling processes in a vacuum or protective atmosphere, repeated heating and cooling is not needed, and accordingly soldering time can be saved, power consumption is reduced, and working efficiency and soldering quality are improved.

The invention belongs to the technical field of heat energy comprehensive utilization, and particularly relates to a method and system for comprehensively utilizing steam turbine dead steam latent heat. The method comprises the steps that dead steam is exhausted through a steam turbine, and the dead steam exhausted through the steam turbine is transmitted to a waste-heat utilization condensation system which carries out latent heat and condensate the dead steam into water through the dead steam to finish the Rankine cycle. The system comprises the steam turbine and the waste-heat utilization condensation system which is connected with the steam turbine to carry out latent heat and condensate the dead steam through the dead steam to finish the Rankine cycle. A condenser utilizing the waste heat can be a specially-designed low-temperature and multi-effect evaporation sea water desalting plant and can also be a single-effect lithium bromide absorption air conditioner unit. According to the method and system, the low-pressure dead steam latent heat can be efficiently utilized under the condition that the generating efficiency of a turboset is high.