40results about How to "Raise the hot air temperature" patented technology

The invention is suitable for the field of molten slag dry process treatment, and provides an afterheat recycling system utilizing a slag-granule-jetting molten-slag-crushing process. The system comprises a dry cooling tower, a granulated slag bin and a blowing tank, wherein an opening is formed in the upper end of the dry cooling tower; an air inlet is formed in the lower end of the dry cooling tower; a hot air outlet is formed in the top of the dry cooling tower; a discharging port is formed in the bottom of the dry cooling tower; an collection bin is also arranged inside the dry cooling tower; the bottom of the collection bin is communicated with the discharging port; a slag trough and a spray gun are arranged at the opening; the spray gun is positioned below the outlet of the slag trough; the outlet of the granulated slag bin is connected with the blowing tank; compressed air is used as a fluidization and transmission medium, and the outlet of the blowing tank is communicated with the spray gun. According to the afterheat recycling system utilizing the slag-granule-jetting molten-slag-crushing process, by adopting a pneumatic transmission way, slag granules are jetted so as to crush molten slag, and heat exchange on the slag granules and the molten slag can be performed, so that the flow of the cooling air is reduced; moreover, the molten slag is easily crushed by the slag granules, the obtained hot slag layer has certain voidage, and therefore, full heat exchange is facilitated. According to the system, higher temperature of the hot air can be acquired, the afterheat recycling quality is improved, and the generating efficiency is increased.

A method and a system for optimizing a drying grate-rotary kiln oxidate pellet thermal regulation are characterized in that a blower is adopted to pressurize the combustion air of a center burner; the pressure of the combustion air is increased to 18 to 25 KPa; the length of the flame of the center burner of a rotary kiln is controlled to be 15 to 17 m; a heat source point is added in a gas hood to increase the temperature of the preheating segment II of a drying grate by 100 to 150 DEG C; hot air of 500 to 1,000 DEG C are supplied to an air drying segment and a preheating segment I; and the system comprises a pressurizing device, the heat source point and a hot air supply device. The invention has the advantages that reasonable drying and preheating temperature gradient is formed, the drying and preheating effect is improved, energy is saved, the proportion of production of hematite is improved from the highest 40 percent to 100 percent, the hot air volume of the drying grate is sufficient, the hot air temperature is standard, the drying and preheating effect of fresh pellets is remarkably improved, the yield is increased, the consumption of coal gas is lowered, the powder entering the kiln is reduced, and the phenomenon that ring forming is liable to be caused by high-temperature powder feeding of the rotary kiln.

A vertical cooling machine with a rotary distributing device comprises the rotary distributing device (1), an umbrella-shaped chute (2), vertical chutes (3), a tower body, a cooling section (6) and ahot air outlet (10), wherein the tower body is composed of a tower body top cover (4) and a tower body side wall (5), and the hot air outlet (10) is formed in the upper portion of the tower body top cover or the tower body side wall. The umbrella-shaped chute (2) comprises an upper overall section (201) and a lower separated section (202), the upper end of the overall section (201) is connected with the rotary distributing device (1), each branch of the lower separated section (202) is connected with one corresponding vertical chute (3) below, and a hot air channel (7) is formed above the cooling section (6) and in a gas space between the tower body and the vertical chutes (3). A uniform air inlet device (8) is arranged below the cooling section (6), and a plurality of discharging conicalhoppers (9) are arranged on the lower side of the uniform air inlet device (8). Discharging devices are arranged on the lower sides of the discharging conical hoppers (9). The vertical cooling machineis simple in structure, reliable in sealing and high in waste heat recovery efficiency.

The invention provides a novel combined brick structure of a self-locking sealed blast furnace warm air duct intersection and relates to the technical field of thermal power engineering. A key technology of self-locking refractory brick masonry structure is adopted, self-locking refractory bricks with both flat ends and self-locking refractory bricks with one flat end and one pointed end are selected within bending angles of 1-180 degrees according to the actual condition of diameter of the intersection connecting site of a main pipe and a surrounding pipe (or branch pipe), and the self-locking refractory bricks are built to form a novel annular combined brick structure at the intersection connecting site of the main pipe and the surrounding pipe (or branch pipe) in the blast furnace warm air duct so as to eliminate the annular faulted joint at the intersection connecting site of the main pipe and the surrounding pipe (or branch pipe) in the blast furnace warm air duct and numerous triangular faulted joints of the annular faulted joint. The novel combined brick structure is applied to blast furnace warm air duct intersection structures. The novel combined brick structure has the advantages of scientific and smart design, no annular faulted joints or triangular faulted joints, severe environment resistance, high production efficiency and excellent quality.

The invention discloses a vertical type sinter cooler and a sinter cooling method. A plate type ore feeder unloading type vertical cooler comprises a material bin (1), a material distribution pipe (2), a tower, a plurality of discharge conical hoppers (5), an air ring (H), an air cap (M) and a hot air outlet (8). The tower comprises a tower top cover (3) and a tower wall (4). The discharge conicalhoppers (5) are located below the tower wall (4). The hot air outlet (8) is formed in the upper portion of the tower wall (4) or in the tower top cover (3). The top cover (3) is fixedly connected with the upper end of the tower wall (4). The material bin (1) is arranged above the top cover (3). The upper end of the material distribution pipe (2) is connected with the bottom of the material bin (1). The lower end of the material distribution pipe (2) stretches into the place below the top cover. The multiple discharge conical hoppers (5) are distributed annularly at the lower end of the towerwall (4) or are distributed evenly in the peripheral direction. A circle of fixed gap is formed between the lower portion of the tower wall and the tops of the multiple discharge conical hoppers (5) and serves as the air ring (H). The air cap (M) upwards stretching into the inner space of the tower is arranged in the bottom center of the tower, and a plate type ore feeder (12) is arranged below each discharge conical hopper (5).

The invention discloses a flashboard discharging type vertical cooler. The vertical cooler comprises a stock bin (1), a distributing tube (2), a tower body, a wind ring (H), a wind cap (M), multiple discharging outlets (5a) and a hot wind outlet (8), wherein the tower body is composed of a tower body top cover (3), a tower wall (4), a tower body cone cylinder (4) located below the tower wall (5) and a tower bottom (D), the multiple discharging outlets (5a) are arranged at the lower part of a discharge cone hopper (5), and the hot wind outlet (8) is arranged on the upper part of the tower wall(4) or the tower body top cover (3); and a fixed gap at the periphery is formed between the lower part of the tower wall (4) and the top part of the discharge cone hopper (5) and serves as the wind ring (H), the wind cap (M) extending upwards into the inner space of the tower body is arranged at the center of the tower bottom, a discharging gate or a discharging gate plate (12) is correspondinglyarranged at each discharging port (5a), and a discharging channel (10) is arranged below the discharging gate (12).

The invention provides a vertical type cooler. The vertical type cooler comprises a stock bin (1), a material distribution pipe (2), a tower body, a plurality of discharging conical funnels (5), air rings (H), air buttons (M) and a hot air outlet (8), wherein the tower body is composed of a tower body top cover (3) and tower walls (4); the discharging conical funnels (5) are positioned below the tower walls (4); the hot air outlet (8) is formed in the upper part of one tower wall (4) or in the tower body top cover (3); the top cover (3) is fixedly connected with the upper ends of the tower walls (4); the stock bin (1) is arranged on the top cover (3); the upper end of the material distribution pipe (2) is connected with the bottom of the stock bin (1); the lower end of the material distribution pipe (2) extends to a position below the top cover; the plurality of discharging conical funnels (4) are correspondingly annularly distributed at the lower ends of the tower walls (4) or are uniformly distributed in the circumferential direction; a circle of fixed clearances are formed between the lower parts of the tower walls (4) and the tops of the plurality of discharging conical funnels(5) to form the air rings (H); the center position of the bottom of the tower body is provided with the air buttons (M) which extend up into the internal space of the tower body; and each dischargingequipment (P) is arranged below the corresponding discharging conical funnel (5).

The invention disclose a vertical type cooler. The cooler comprises a material bin (1), a material distribution pipe (2), a tower body composed of a tower body top cover (3) and a tower wall (4), a plurality of discharging cone hoppers (5) located below the tower wall (4), a wind ring (H), a wind cap (M), a radiation heat recoverer (F01) located under the tower body top cover (3) and is close to the tower body top cover (3) and a hot wind outlet (8) arranged above tower wall (4) or on the tower body top cover (3), wherein the top cover (3) is fixedly connected with the upper end of the tower wall (4), the material bin (1) is arranged above the top cover (3), the upper end of the material distribution pipe (2) is connected with the bottom of the material bin (1), and the lower end of the material distribution pipe (2) extends into the positon below the top cover (3); and the plurality of discharging cone hoppers (5) are annularly distributed below the tower wall (4) or are uniformly distributed in the circumferential direction, a circle of fixed clearance is formed between the lower part of tower wall (4) and the tops of the plurality of discharging cone hoppers (5) and serves as the wind ring (H), the wind cap (M) extending upwards into the inner space of the tower body is arranged at the center of the bottom of the tower body, and discharging equipment (P) is arranged below each of the discharging cone hoppers (5).

The invention provides a device and method utilizing start-up system drained water as a heating source of an air heater. The device comprises two connecting paths connected between a start-up system water storage tank and a flash vessel; according to one connecting path, the start-up system water storage tank is connected with the flash vessel through a water storage tank body and an air heater by-pass valve; according to the other connecting path, the start-up system water storage tank is connected with water inlets of both a primary-air air heater and a secondary-air air heater through the water storage tank body and an air heater valve correspondingly, and water outlets of both the primary-air air heater and the secondary-air air heater are connected with the flash vessel through an airheater back-water valve; a primary fan is connected with an air inlet of the primary-air air heater, a secondary fan is connected with an air inlet of the secondary-air air heater; and air outlets ofboth the primary-air air heater and the secondary-air air heater are connected with an air preheater. According to the device and method utilizing start-up system drained water as the heating sourceof the air heater, heat discharged by a start-up system can be effectively utilized, the heat loss is reduced, and the primary air temperature and the secondary air temperature are increased; and combustion of a boiler can be enhanced, and secondary burning and low-temperature corrosion of a train flue of a unit and the air preheater can also be weakened and avoided.

The invention relates to a double-channel vortex ceramic burner (namely, the number of coal gas inlets is two and the number of air inlets is two) which is vertically installed at the upper part of a burning chamber of a hot air stove and comprises a vortex chamber 1, a throat mouth 8, coal gas inlets 4, a coal gas ring path 3, a coal gas nozzle 2, air inlets 6, an air ring path 7 and an air nozzle 5, wherein the vortex chamber 1 is positioned at a central area, and the throat mouth 8 is arranged between the vortex chamber 1 and the burning chamber; the coal gas nozzle 2 is arranged on the inner wall of the coal gas ring path 3, and two coal gas inlets 4 are arranged on the outer wall of the coal gas ring path 3; the air nozzle 5 is arranged on the inner wall of the air ring path 7; and the two air inlets 6 are arranged on the outer wall of the air ring path 7. The double-channel vortex ceramic burner can transform the top-burning hot air stove of the traditional level sleeve type burner into a vortex top-burning hot air stove under the condition that the burning chamber and the pipeline of the hot air stove is rarely transformed. The double-channel vortex ceramic burner has the characteristics of raising the hot air temperature, prolonging the service life of the hot air stove, reducing the burning consumption, and reducing the investment.

The invention provides a hot-blast stove system of a blast furnace. The hot-blast stove system comprises a plurality of hot-blast stoves, a plurality of first heat exchange units, at least one second heat exchange unit, a combustion-supporting device, a chimney, a main air pipe, a main coal gas pipe and a main flue gas pipe. The multiple hot-blast stoves and the multiple first heat exchange units are arranged in a one-to-one correspondence mode. All the hot-blast stoves communicate with the main flue gas pipe and one of the main coal gas pipe and the main air pipe through the corresponding first heat exchange units, and all the hot-blast stoves communicate with the main flue gas pipe and the other one of the main coal gas pipe and the main air pipe through the second heat exchange units. The main flue gas pipe communicates with the chimney. The main air pipe communicates with the combustion-supporting device. By means of the hot-blast stove system of the blast furnace, at least one of coal gas and combustion-supporting air can be preheated with waste flue gas of one single hot-blast stove, high-temperature waste flue gas heat which is generated by last-phase combustion can be effectively utilized so that the coal gas and/or the combustion-supporting air can reach 280-310 DEG C, and thus the arch crown temperature and hot-blast temperature of each hot-blast stove can be further raised.

The invention discloses a vertical type cooler with a chute type distributing device. The vertical type cooler comprises a feed inlet (1), a stock bin (2), a tower body (3), an umbrella-shaped chute (4), vertical chutes (5), a cooling section (6) and a hot air outlet (10) in the upper portion of the tower body (3). The feed inlet (1) is formed in the upper portion of the tower body (3), the upperend of the stock bin (2) is connected with the feed inlet (1), the lower end of the stock bin (2) is connected with the upper end of the umbrella-shaped chute (4), the lower ends of branches of the umbrella-shaped chute (4) are connected with the upper ends of the corresponding vertical chutes (5), and the lower portions of the vertical chutes (5) are provided with the cooling section (6). A uniform air inlet device (7) is arranged below the cooling section (6), a plurality of discharging conical hoppers (9) are arranged on the lower side of the uniform air inlet device (7), and the lower sideof each discharging conical hopper (9) is provided with a discharging device. The cooler is simple in structure, reliable in sealing and high in waste heat recovery efficiency.

The invention discloses a sinter air drafting type vertical cooling furnace. The vertical cooling furnace (A0) comprises a stock bin (1), a tower body (2) and discharging equipment (3). The tower body(2) comprises a tower top (201), a tower wall (202) and an air inlet segment (203). The tower top (201) is arranged on the top of the tower wall (202), and the air inlet segment (203) is arranged onthe lower part of the tower wall (202). The stock bin (1) is arranged on the upper part of the tower top (201) and communicates with the interior of the tower body (2). The bottom of the air inlet segment (203) is provided with a discharge port (204). The discharging equipment (3) is arranged below the discharge port (204). The tower top (201) or the upper part of the tower wall (202) is providedwith an air drafting hot air outlet (4). The vertical cooling furnace has the advantages that the sinter cooling speed is low, the cooling air capacity consumed per ton is small, the exhaust gas quantity is relatively small, the exhaust gas temperature is high, the boiler thermal efficiency is high, cooling waste gas can be completely utilized by a boiler, and the sensible heat recovery rate of sinter generally can reach about 70 %.

A tower-type cooler comprises a tower body constituted by a feeding section (1), a uniform distributing air-outlet section (2), a cooling section (3) and a uniform discharging blast section (4). A rotating distributing device (8) is arranged at the top end of the feeding section (1), and a discharging outlet (801) of the rotating distributing device (8) downwards extends into the feeding section (1). The uniform distributing air-outlet section (2) is connected with the lower end of the feeding section (1); a hot air annular air channel (6) is arranged on the lower portion of the feeding section (1) and the periphery of the outer side of the uniform distributing air-outlet section (2); the cooling section (3) is arranged below the uniform distributing air-outlet section (2); the uniform discharging blast section (4) is arranged below the cooling section (3); and a plurality of discharging cone hoppers (5) are annularly distributed at the lower end of the uniform discharging blast section (4) or uniformly distributed in the circumferential direction, and discharging equipment is arranged below each discharging cone hopper (5). The tower-type cooler is simple in structure, reliable insealing and high in waste heat recovery efficiency.

The invention discloses a vertical-type cooling machine with a rectifying device. The vertical-type cooling machine comprises the rectifying device, a tower body, an edge air supply device and discharging devices. The tower body comprises a tower top, a tower wall and a tower bottom. The tower top is arranged at the top of the tower wall, and the tower bottom is arranged at the bottom of the towerwall. The rectifying device is arranged above the tower top and further communicates with the inside of the tower body. The edge air supply device is arranged on the lower middle portion of the towerwall. The tower bottom is provided with discharging outlets. The discharging devices are arranged below the corresponding discharging outlets. A hot-blast air outlet is formed in the upper portion ofthe tower top or the tower wall. The vertical-type cooling machine disclosed by the invention has the cooling beneficial effects that the cooling speed of agglomerate is low, ton consumption coolingblast capacity is small, the exhausted air amount is relatively small, the exhausted air temperature is high, the heat efficiency of a boiler is high, the cooled exhausted gas can be fully utilized bythe boiler, and the sensible heat recovery rate of the agglomerate can reach about 7%.

The invention discloses a multifunctional small solar heater structure based on excess and waste heat utilization technology. An air outlet of an air supply pipe (11) is directly fixed or fixed below the outside of a reflecting cover through a movable hook (31), a safety protecting net (12) and an additionally-made movable pipe orifice fastening cover are arranged at the pipe orifice of the air supply pipe, and a pipe body of the air supply pipe (11) is fixedly or movably butted with a pipeline led from a foot and hand heating device (27) via a three-way branch pipe (26). Without increasing power consumption and reducing original infrared heating effect, original rising lost hot air and heat energy carried by a heat source carrier form hot air through the fan, the hot air is blown or sucked onto the heating device specially used for feet and hands, excess and waste heat is fully utilized to solve the problem about heating of feet and hands of another person outside an infrared radiation area, electric heat utilization rate of a heater is doubled, and energy-saving effect is remarkable.