73results about How to "Reduce cooling air volume" patented technology

The invention provides a melting furnace slag quenching dry type granulation and sensible heat recovery generating system and a method using the same and belongs to the technical field of steel metallurgy furnace slag treatment and complementary energy recovery. The melting furnace slag quenching dry type granulation and sensible heat recovery generating system provided by the invention comprisesa slag-receiving device, a high-pressure water-air pulverization furnace slag quenching and granulating device, a furnace slag slow-cooling device, a sensible heat recovery generating device and a waste gas purification treatment device. According to the invention, the melting furnace slag is quenched and granulated by utilizing the high-pressure water-air pulverization device, so that the melting furnace slag is rapidly cooled to be in a glassy state; and then through a water-cooled type vibration grid plate, the melting furnace slag in the glassy state is further subjected to heat exchange with cold air so as to facilitate the subsequent recovery of the sensible heat. By the system provided by the invention, the melting furnace slag is quenched and granulated, and the high-temperature sensible heat resource of the furnace slag is sufficiently recovered and is used for generation on the basis that the water activity quality of the furnace slag is not influenced.

The invention discloses a water-sealed circular cooler which mainly aims at solving the problem of poor sealing effect of the existing circular cooler. The water-sealed circular cooler comprises a cooler body, a rotation system, a trolley, a blower system and water-sealed device, wherein the rotation system is arranged on the cooler body, and comprises a rotation power drive device and a rotationframework driven to rotate by the rotation power drive device; the trolley is arranged on the rotation framework; the blower system is arranged below the rotation framework, and comprises a blower and an air box arranged between the air outlet of the blower and the rotation framework; the water-sealed device is composed of two sets of water-sealed parts having the same structure, and the two setsof water-sealed parts are respectively arranged at the outer ring side and the inner ring side of the annular rotation track of the trolley and/or rotation framework and are positioned between the air box and the trolley and/or rotation framework; each water-sealed part comprises a water tank and a sealing plate; and the water tank is fixed on the cooler body, one end of the sealing plate is inserted in the water tank, and the other end is fixed below the trolley and/or the rotation framework.

The invention discloses a cooling device used for cooling an air compressor. The cooling device comprises at least one fan, a temperature sensor, a controller and a frequency converter, wherein the temperature sensor is used for detecting exhaust temperature of the air compressor; the controller is connected with the temperature sensor and is used for comparing the exhaust temperature with preset exhaust temperature and outputting a signal after comparison; and the frequency converter is respectively connected with the at least one fan and the controller and is used for controlling the at least one fan to output cooling air volume corresponding to the signal after comparison according to the signal after comparison. When the cooling device is in use, a cooing temperature is firstly set, the exhaust temperature of the air compressor is detected by the temperature sensor, when the controller determines that the temperature is lower than the cooling temperature, the power supply frequency of the fan is reduced by the frequency converter, the power of the corresponding fan can be reduced, and the cooling air volume is reduced, therefore, the energy consumption is reduced, the energy sources are saved, and the service life of lubricating oil in the air compressor is effectively prolonged simultaneously. The invention also discloses a cooling method.

The invention relates to combined type cold slag device. It includes cold slag room, air chamber, and water cooling packing auger cold slag machine. The cold slag room is set two divider to divide it into three cooling room. The second divider lower is set hole. The first cooling room is spouted bed structure of which bottom is set close-hole type grid plate on which the main slag discharge pipe is set. The back two cooling rooms are set water cooling tube bank, and funnel cap type grid plate at the bottom. The invention can satisfy the demands of big feeding coal granularity, actual motion and macro-scale operations technology development for circulating fluidized bed boiler.

The invention relates to a design method for porous metal blade. The method combines porous metal material with design of blade and the manufacturing process. By the high specific strength characteristic of porous metal material and adjusting porosity of said material, blade coupling design of process, strength, vibration, and pneumatic thermal force is carried out so as to improve the specific strength of blade and satisfy the flow control demand of blade boundary layer. The method conquers the lack of solid or hollow blade in prior technology. The good performance of porous metal material is used. Blade material characteristic, strength, vibration and pneumatic thermal force performance are considered in synthesis. The coupling design method for blade process, strength, vibration, pneumatic thermal force of porous metal is provided and part performance of aeroengine and gas turbine can be improved greatly. At the same time the invention provides a blade designed by the method, aeroengine and gas turbine comprising blade mentioned above.

The invention relates to a ventilation control system and method applicable to a dry type slag extractor, which have simple structure and can effectively control the quantity of cold air entering a boiler. The ventilation control system comprises a slag extractor which is divided into a horizontal section and an inclined section, wherein ventilating devices are respectively arranged at the horizontal section and the inclined section; a tail end of the inclined section is a slag falling port; the ventilating devices are connected with a ventilation control unit; meanwhile, a first stage of temperature measuring device and a second stage of temperature measuring device are respectively arranged on an intersected part of the horizontal section and the inclined section and an upper part of the inclined section; and two stages of temperature measuring devices are both connected with the ventilation control unit.

The invention relates to a cooling air dry-type deslagging system, in particular to a dry-type deslagging system capable of adjusting cooling air. The problem that the volume of cooling air entering a hearth is too large according to an existing dry-type deslagging system, and therefore the operating efficiency of a boiler is reduced is solved. One end of a hot air exhausting pipeline is communicated with a horizontal section, and the other end of the hot air exhausting pipeline is communicated with a primary air inlet flue. A hot air exhausting fan inlet isolation door, a hot air exhausting fan inlet adjusting door, a hot air exhausting fan and a hot air exhausting fan outlet isolation door are sequentially arranged on the hot air exhausting pipeline. A cooling air adjusting baffle is obliquely arranged over a hydraulic opening-closing door, and the opening degree of the cooling air adjusting baffle ranges from 0 to 100%. A motor is arranged on the outer side wall of the boiler. The motor and the cooling air adjusting baffle are in driving connection through a valve rod. The dry-type deslagging system capable of adjusting cooling air is used for comprehensively adjusting cooling air inside the hearth of the boiler.

The invention discloses a dual-fluid spraying gun structure suitable for a flue-type urea direct injection pyrolysis process. The dual-fluid spraying gun structure comprises a gun barrel and an atomizing nozzle, wherein the gun barrel comprises a cooling air pipeline, an atomizing air pipeline and a urea solution pipeline; the urea solution pipeline, the atomizing air pipeline and the cooling air pipeline are distributed from inside to outside in sequence; a side face of one end of the cooling air pipeline is provided with a cooling air inlet; a side face of one end of the atomizing air pipeline is provided with an atomizing air inlet; the atomizing nozzle is fixed on a side face of the other end of the cooling air pipeline; an atomizing air inlet of the atomizing nozzle is connected with the other end of the atomizing air pipeline; a urea solution inlet of the atomizing nozzle communicates with the urea solution pipeline; an outer wall of the cooling air pipeline is provided with a heat-insulating layer; the heat-insulating layer is positioned in a flue. By adopting the structure, the cooling air volume of a dual-fluid spraying gun for the urea direct injection pyrolysis process can be effectively lowered, the urea solution in the gun barrel can be kept in a liquid state, and a urea direct injection pyrolysis spraying gun has a good atomizing effect.

The invention discloses a combined fluidized bed type gas-solid heat exchange device utilizing waste heat of furnace slag. The device comprises a gas-solid heat exchange body, and an air outlet is arranged at the top of the gas-solid heat exchange body. The device is characterized in that two partition walls are arranged in the gas-solid heat exchange body, connect a front faceplate with a rear faceplate of the same and divide a cabin inside the gas-solid heat exchange body into a left bubbling bed cabin, a spouted bed cabin and a right bubbling bed cabin, the left and right bubbling bed cabins are symmetrically arranged on two sides of the spouted bed cabin, the upper portions and the lower portions of the three cabins are communicated respectively, an independent air chamber is arranged at the bottom of each cabin, a dense-hole-type air distribution plate is arranged above the air chamber in the spouted bed cabin, a left air-cap-type air distribution plate and a right air-cap-type air distribution plate are arranged at the tops of the air chambers in the left and right bubbling bed cabins respectively, and the left air-cap-type air distribution plate is connected with the dense-hole-type air distribution plate through a second dense-hole-type air distribution plate and a first orthostomous section. The combined fluidized bed type gas-solid heat exchange device has good gas-solid heat exchange effect and can be widely applied in the field of steel and iron and power.

The invention relates to an efficient composite vertical cement calcined clinker cooler and a cooling method, and belongs to cement clinker coolers and cooling methods. The efficient composite vertical cement calcined clinker cooler comprises a front-end cooling device, a vertical cooling device and a crushing and air-locking device. The cooling method comprises the following steps that clinker enters the front-end cooling device from a rotary kiln at a calcination temperature of 1200-1400 DEG C; (2) the high-temperature clinker enters the vertical cooling device to be cooled continuously after being subjected to quenching; (3) the clinker which is subjected to vertical re-cooling enters a roller crusher to be extruded and crushed; and (4) the cooled and crushed clinker is discharged intoa clinker warehouse for storage through the air-locking device. The cooling method has the advantages that a traditional clinker cooling mode is integrated with a vertical cooling mode, so that the quality and the grindability of the clinker are greatly improved; the contact and heat exchange time between the clinker and the gas is longer, so that the heat exchange is more sufficient; cooling airvolume for the unit clinker is small, transmission power is not needed, power consumption is low, maintenance is easy, equipment is more reliable in operation, and the use cost is low; and the technology is simple in process, energy consumption is low, and standard emission is achieved.

The invention discloses a cooling system and method for a high-temperature ammonia spraying denitration air cooling spray gun of a coal-fired boiler. According to the cooling system and method, cooling air enters a cooling air cavity through a cooling air connector and then is divided into two paths, one path enters a near-wall cooling air chamber through a cooling air opening channel and then is sprayed into the boiler through a near-wall cooling air nozzle in the direction parallel to a spray gun pipeline, the effect of cooling smoke around the spray gun pipeline is achieved, the other path of air flows to the end part of the spray gun along the cooling spray gun pipeline and exchanges heat with the wall surface of the cooling spray gun pipeline in the process to reduce the wall temperature, the cooling air reaches the head of the spray gun and is sprayed towards the direction of the fixed structure through a cooling air nozzle at the end part, so that the effect of cooling the flue gas around the spray gun is also achieved, and a thermocouple induction end monitors the temperature of the spray gun head so as to control the flow of cooling air. The method can effectively reduce the surface temperature of the spray gun in the flame, increase the extending distance of the spray gun in the flame, increase the coverage area of a reducing agent, and solve the problem that the surface temperature of the spray gun rapidly rises to influence the efficiency.

The invention relates to a heat shield element (1) comprising a wall (2) having a hot side (3) and an opposing cold side (4), a peripheral edge (5) having an inner side (6) and an outer side (7), and a securing device (8) arranged substantially in the middle of the cold side (4) of the wall (2), said securing device extending substantially perpendicularly away from the wall (2), wherein cooling channels (9) are arranged in the securing device (8), wall (2) and edge (5), extending over at least two of the three. The invention also relates to a combustion chamber (20) and a gas turbine plant (24). The invention further relates to a method for producing a heat shield element (1) of this type.

The invention belongs to the field of cement firing equipment, and discloses a horizontal cement clinker grate type particle grading cooler and a cooling method. The upper layer of the cooler is provided with a kiln door cover; one side of the kiln door cover is connected to a rotary kiln and a tertiary air pipe; the tertiary air pipe communicates with a decomposition furnace; the end, far away from the tertiary air pipe, of the kiln door cover is provided with a fine particle sedimentation chamber; the end, connected to the kiln door cover, of the rotary kiln is provided with a discharge slope; the bottom end of the discharge slope is connected to a particle grading air duct, and the particle grading air duct is located on the side facing the rotary kiln and below the kiln door cover; thebottom of the particle grading air duct is connected to a horizontal grate cooler; a plurality of air chambers are arranged at the lower end of the horizontal grate cooler; a discharging ash hopper is connected below the fine particle sedimentation chamber; and the bottom end of the discharging ash hopper is connected to an inlet of a single-cylinder cooler through a discharging trough. By meansof the horizontal cement clinker grate type particle grading cooler and the cooling method, cement clinker particles are graded to be cooled separately, so that the heat exchange efficiency of gas andmaterials is greatly improved, the ventilation resistance of material layers is reduced, the amount of cooling air is reduced, the heat recovery efficiency is improved, and the heat consumption of afiring system is reduced.