48results about How to "Lower the furnace temperature" patented technology

A design and control method for the optimizing control system of intermediate rolling mill and heating furnace in order to improve the heating quality of billet in the heating furnace and save energy features that the heating furnace and intermediate rolling mill constitute a closed loop system, the information (rolling force, temp, etc) is fed back to heating furnace for dynamically changing the heating temp, and the optimizing control strategy and control algorithm are used in the billet heating process.

The invention relates to a gasified gas purification device, in particular to a double-flow biomass gasified gas purification device, which solves the problems of low reaction temperature of a gasification furnace, abundant generated tar and wastewater, low gas-producing efficiency and abundant impurities and low heat value of output gas, resulted from unscientific structure of the gasification furnace. The gasified gas purification device comprises a gasification furnace, a gas flow control valve, a vortex flow oxidation-assisted control valve, a gas purifier and a fan. The gasified gas purification device provided by the invention has the advantages of increasing the reaction temperature of the furnace, wherein the temperature in oxidation, reduction and pyrolysis cylinders is between 1,300 and 1,600 DEG; increasing the gasification intensity; being capable of quickly separating moisture in biomass combustible gas so that gas quality is better; ensuring greatly reduced tar content in the combustible gas, less wastewater generated, high gas-producing efficiency and low environmental pollution due to the adoption of a mesh-type catalytic cracking device; and removing tar, moisture and ash in the gas through the gas purifier so that the heat value of the gas is improved. The gasified gas purification device is widely applied in industrial and civil fields.

The invention discloses a teapot nodulizing packet which has simple structure, convenient use and high utilization rate of nodularizer and can also be used as a pouring packet. The teapot nodulizing packet comprises a packet body (6), and the inner bottom of the packet body (6) is provided with a dike (5) which divides the bottom of the packet body (6) into a feed chamber (2) and a nodulizing chamber (4). The teapot nodulizing packet is characterized in that the upper part of the packet body (6) is provided with a single sealing side cover (7), one side of the packet body (6) is provided with a pot nozzle (1), and the lower part of the packet body (7) is provided with a molten iron inlet and outlet port (3) communicated with the pot nozzle (1). The feed chamber (2) is communicated with the pot nozzle (1) through the molten iron inlet and outlet port (3). The invention has simple and reasonable structure, and nodulizing and pouring are carried out in one packet. During a nodulizing reaction, the absorption rate of magnesium can reach more than 85 percent, the addition quantity of the nodularizer is reduced, the labor intensity is lightened, the working environment is improved, and the air pollution is reduced; meanwhile, the tapping temperature of molten iron is also reduced, so that production cost is lowered.

The invention discloses an electro-hydraulic drive M-shaped steel ladle capping and decapping device, which relates to the structure of a whole-course full-automatic capping and decapping device of a high-temperature melt container in metal smelting. The electro-hydraulic drive M-type steel ladle capping and decapping device comprises a fixed frame, wherein the fixed frame is fixedly connected with an electro-hydraulic push rod and a connecting rod mechanism; the fixed frame is hinged to an M-shaped prong assembly; the electro-hydraulic push rod is connected with the connecting rod mechanism; the connecting rod mechanism is hinged to the M-shaped prong assembly. According to the electro-hydraulic drive M-type steel ladle capping and decapping device disclosed by the invention, the electro-hydraulic push rod is stretched to drive the connecting rod mechanism to control the swinging of the M-shaped prong assembly, an included angle between the M-shaped prong assembly and the horizontal plane is regulated, and capping and decapping are realized by the movement of a buggy ladle. High-cost heat energy is avoided and prevented from outwards losing to the outside from a steel ladle lining used for containing molten steel and liquid steel, the steel mill production cost is lowered, the operation condition is improved, and the production rate is improved.

The invention discloses a vacuum thermal creep type forming method of titanium alloy skin. The vacuum thermal creep type forming method comprises the following steps: 1) a to-be-formed titanium alloymask is positioned between an upper mold and a lower mold which are matched; 2) the skin and the mold are heated in a vacuum environment, the forming temperature is 700 DEG-900 DEG C, and after the temperature is maintained for a preset time, the skin is cooled with a furnace and then discharged into the furnace; and 3) the mold is disassembled, and forming of the titanium alloy skin is completed.Due to the fact that the integral vacuum heating is adopted, the creep deformation of the titanium alloy skin is realized by the gravity of the mold, the furnace discharge temperature is low, the skin is cooled to be below 150 DEG C along with the furnace, the rebound amount of the skin is small after forming, the residual stress is small, and the size precision is high.

The invention discloses equipment capable of achieving vacuum quantitative casting of molten metal. The equipment comprises a mechanical device, a vacuum quantitative casting device, an opening and closing device and a control system; the vacuum quantitative casting comprises a seal container with internal space, a gas filling mechanism, a vacuum mechanism and an exhaust opening; the exhaust opening comprises a liquid draining opening allowing molten metal to be drained, a pipeline allowing gas to pass through is further arranged in the internal space, and passes through the liquid draining opening, the pipeline is provided with a gas exhaust opening allowing gas not in contact with the molten metal to be exhausted, the opening and closing device achieves independent control over the liquid draining opening and the gas exhaust oponeing, that is, the opening and closing device can independently control opening and closing of the liquid draining opening and the gas exhaust opening, it is ensured that during casing of the molten metal, the oxidation and hydrogen absorption of the molten metal can be reduced, gas holes and oxide inclusion of a casting are reduced, and the casting quality is improved.

The invention relates to a gas producer which can produce semi-cokes at the same time, comprising a supporting bracket, an ash pan, a lower gas producer body, a middle water tank, an upper gas producer body and a coal feeding mechanism. The gas producer is characterized in that: a water sealing groove is added outside a joint between the middle water tank and the upper gas producer body; an oblique discharge tube is arranged between the hearth of the upper gas producer body and the water sealing groove. While producing the gas, the gas producer produces the semi-cokes by utilizing the high-temperature gas, thus reducing the energy consumption.

The invention discloses an energy-saving roller-hearth continuous kiln waste heat boiler, which comprises a smoke pipe 1, a drum 2, heat exchange tubes 3, down pipes 4 and header pipes 5, wherein the smoke pipe 1 is positioned in the drum 2; the heat exchange tubes 3 have an L shape so as to be close to a steel pipe as much as possible; the lower parts of the heat exchange tubes 3 are respectively connected with the left and right header pipes 5, and the upper parts of the heat exchange tubes 3 are connected with the drum 2; the lower parts of the down pipes 4 are respectively connected with the left and right header pipes 5, and the upper parts of the down pipes 4 are connected with the drum 2; and thermal insulating layers 6 are arranged on the outer sides of the drum 2 and the heat exchange tubes 3 and at the peripheries of the down pipes 4 and the header pipes 5. Two kinds of heat energy, namely high-temperature smoke heat energy and radiating heat energy of the steel pipe, can be simultaneously exchanged into steam to serve as steam for production of the steel pipes and domestic steam; and moreover, the tapping temperature of the steel pipe is reduced, the secondary oxidation loss is reduced, and the outer surface quality of a product is improved.

The invention discloses a drying oven used for conducting drying and degreasing on an air conditioner component which comprises fins and copper pipes. The drying oven is provided with a drying chamber used for accommodating the air conditioner component, and further provided with an air blowing device which is movably arranged in the drying chamber. The air blowing device is used for blowing out compressed air with the temperature higher than the drying indoor temperature to orifices of the copper pipes. By means of the drying oven, the problem that a drying oven in the prior art is large in energy consumption is effectively solved.

The invention provides a molten iron transportation assembly line, and belongs to the technical field of molten iron transportation. The molten iron transportation assembly line comprises an iron supply system, an iron receiving system, a material dumping system and a lifting device; the lifting device is further arranged between the iron receiving system and the material dumping system; the iron receiving system comprises a sub running track, a main running track, a plurality of sub trolleys and a plurality of main trolleys, wherein the sub trolleys and the main trolleys are arranged along a path perpendicular to the axis of the sub running track; the main running track is arranged at the end part of the sub running track; the sub trolleys are used for supporting ladles; the main trolleys are used for receiving the sub trolleys from the sub running track; the material dumping system comprises a material dumping track and a material dumping trolley, and the material dumping track is arranged on one side of the sub running track; and the dumping trolley is used for running on the dumping track. According to the molten iron transportation assembly line, frequent movement of high-altitude transportation is reduced; the safety is improved; the personnel cost is reduced; the tapping temperature of molten iron is reduced; and the energy consumption is reduced.

The invention discloses a method for reducing heating gas consumption. By adjusting a first heating section, a second heating section and the soaking temperature, the tapping temperature of cold rolled steel is reduced, and accordingly the heating gas consumption is reduced; in addition, plate blanks at the similar temperature are put into a heating furnace at the same time, so that the plate blanks are heated uniformly; iron scale produced by uneven temperature is decreased, and the quality of plate blank sintered steel is improved. Compared with the prior art, the method for reducing the heating gas consumption has the beneficial effects that by means of the effective measures, the tapping temperature of the cold rolled steel is reduced, and accordingly the gas consumption of the heating furnace is reduced; according to different temperatures, the cold rolled steel is added into the heating furnace in batches, the temperature difference is decreased, and the producing amount of the iron scale is reduced; in addition, due to the fact that the plate blanks are heated in the furnace sufficiently, the process cost investment in the follow-up rolling process can also be decreased, the rolling efficiency is improved, and the ultimate purposes of reducing cost and improving benefits are reached; the gas unit consumption target is reduced from the previous 1.392 GJ/t to 1.364 GJ/t, and the gas consumption is reduced effectively.

The invention provides a track bracket type steel ladle cover adding and removing device. The track bracket type cover adding and removing device is arranged and used for covering a steel ladle, provided with hinge bases, with a special steel ladle cover, a steel ladle car stops in front of a bracket device after conveying the steel ladle to a finery inlet, the bracket device advances along tracks till making contact with three hanging rings on the ladle cover, and at the moment, the bracket device drives the ladle cover to rise together when pushed by rising power, steel ladle cover hinges are disengaged from the steel ladle hinge bases and the steel ladle cover is left on the bracket device. Molten steel runs in the reverse direction and stops below the bracket device after refining is completed, the bracket device drives the steel ladle cover to begin to fall together, and after the steel ladle cover hinges touch the steel ladle hinge bases, the bracket device stops falling and starts to retreat along the tracks to the waiting position. By means of the track bracket type steel ladle cover adding and removing device, the cover pick-up and adding actions are achieved through the free movement of the special steel ladle cover and the bracket device along the tracks, and the structure is simple and reliable.