127results about How to "Raise the furnace temperature" patented technology

The present invention relates to an internal combustion heated biomass gasification furnace. Its structure is characterized by that it adopts a cylindrical furnace body, in the furnace body interior a coiled internal combustion pipe is set, the internal combustion pipe inlet is positioned in the lower portion of said cylindrical furnace body, and its outlet is extended to the exterior of furnace body from the top portion of cylindrical furnace body, its igniter is positioned in the internal combustion pipe inlet; over the cylindrical furnace body a helical feeding mechanism is set, its helical feeding hole is positioned on the eccentric position of cylindrical furnace body top portion, on the centre axis position of said cylindrical furnace body a stirring shaft with stirring blades is set, on the inside wall of cylindrical furnace body several layers of baffle plates are set, the combustion-supporting air inlet is set in the top portion of said cylindrical furnace body, and the gas outlet in the furnace body is positioned in the lower portion of said furnace body.

The invention discloses a method for rolling a thin high-strength steel plate of a single-frame steckel mill. The method comprises the following steps: producing the finished product of a high-strength steel plate with a thickness less than 10 millimeters by using a blank with the thickness of 150 millimeters and the length more than 10 meters; and then acquiring the thin high-strength steel plate with qualified property and plate shape by controlling a tapping temperature, a coiler furnace temperature, a reduction in last pass, a roller force, a final rolling speed and a high pressure water de-scaling system. When the rolling method is used for producing the thin steel plate, the thin high-strength steel plate is rolled by utilizing the heat preservation function of front and back mill coiler furnaces and controlling the tapping temperature of the blank, the reduction in the last rolling pass, the roller force and the final rolling speed, and the acquired plate shape and property of the steel plate are both qualified, thereby increasing the rolling mill capacity and achieving high plate yield and high property yield.

The invention provides a system and method for heating boiler feed water through steam turbine bypass steam. The system comprises a high-pressure bypass regulating valve, a high-pressure cylinder, an intermediate-pressure cylinder, a low-pressure cylinder, a first valve set, a second valve set, a third valve set, a fourth valve set, a fifth valve set, a sixth valve set, a low-pressure bypass regulating valve, a boiler, a condenser, a first high-pressure heater, a second high-pressure heater, a third high-pressure heater, a water feed pump, a deaerator and a condensate pump. The method includes the following steps that 1, a low-pressure bypass pipeline in front of the low-pressure bypass regulating valve of a steam turbine is connected to a steam exhaust pipeline behind a steam exhaust pipeline check valve of the first high-pressure heater; 2, a high-pressure bypass pipeline behind the high-pressure bypass regulating valve is connected to a steam exhaust pipeline behind a steam exhaust pipeline check valve of the third high-pressure heater; 3, when a unit is started, steam is introduced from a bypass into the steam sides of the high-pressure heaters, heat of the bypass steam is absorbed through the high-pressure heaters, water condensed from the steam gradually flows by itself into the deaerator, and therefore the purpose of absorbing the heat and a working medium of the bypass steam is achieved.

The present invention provides an omnirange heat-insulating cover for continuous casting roll gang. It is formed from several heat-insulating cover bodies. In the whole roll gang, including casting billet cutting zone roll gang, dummy bar roll gang and dressing machine roll gang, over every roll gang a heat-insulating cover body which can be opened is set respectively. The heat-insulating cover body positioned over the casting billet cutting zone roll gang is made into drawing-pulling type structure, the heat-insulating cover body positioned over the dummy bar roll gang is a tilting structure, formed from several heat-insulating cover bodies, at one side of every heat-insulating cover body its respective tilting mechanism is mounted; and the heat-insulating cover body positioned over the dressing machine is a translational structure, the transverse beam in the top portion of heat-insulating cover body can make the several cover bodies be connected into one body, and two ends of said transverse beam are respectively slide-connected with two transversely-moved guideways by means of pulleys.

The invention discloses a quick spheroidal annealing thermal treatment process for a Cr12 extruded seamless steel tube, and a high-temperature annealing heating process and a cooling process are saved. The quick spheroidal annealing thermal treatment process is characterized in that the extruded seamless steel tube is air-cooled to a temperature of 350-450 DEG C to directly enter a furnace for spheroidal annealing, or is slowly cooled to enter the furnace for spheroidal annealing; the extruded seamless tube is slowly heated to a temperature of 720-740 DEG C, the heat is preserved for 1-2 hours, and the extruded seamless tube is cooled to a temperature of 600-620 DEG C with a speed being lower than or equal to 30 DEG C/h, is furnace-cooled to a temperature not exceeding 500 DEG C, and is then discharged out of the furnace for being air-cooled; the hardness HB is 220-260 after spheroidal annealing, so that the mechanical cutting processing requirements can be met; and the spheroidal annealing process time is shortened to 8-12 hours from original 40 hours, so that the spheroidal processing process time is greatly shortened, the production cost is reduced, and mass industrial production is realized.

The invention discloses an environment-controllable high-temperature mechanical testing machine and belongs to the technical field of structural material mechanical property test and detection equipment. The environment-controllable high-temperature mechanical testing machine mainly solves the problem that the existing mechanical testing machine cannot test and detect mechanical properties of an object with a temperature of 1500 DEG C or more. The environment-controllable high-temperature mechanical testing machine is characterized in that a heating furnace casing and a heat-insulation layer also comprise parts extending to two end surfaces but an inlet and an outlet, a heating member is a resistance heating element, heat shields are arranged outside two end surfaces of the heating furnace, a vacuum chamber with air exhaust, air inflation and vacuum chamber operation doors having static sealing structures is adopted, a base, a servo system, a stand column, an upper installation base, a clamping mechanism and a heating furnace are installed in the vacuum chamber, and an air inflation system is connected to an air inflation port of the chamber body. The environment-controllable high-temperature mechanical testing machine can realize sample air, vacuum and controllable atmosphere test environment and realize mechanical performance test and detection at a temperature of 1500-1600 DEG C and vacuum and protective atmosphere mechanical performance test and detection at a temperature of 1600 or more.

The clean coal burning catalyst consists of composite hydrogen-storing alloy, alkali metal chloride, alkali earth metal chloride, boride, alkali metal oxidant, iron and manganese oxidant and other additive. The production process includes preparation of composite hydrogen-storing alloy, and the composition of coal burning catalyst. The clean coal burning catalyst can coal burning efficiency and reduce pollution, and its use makes it possible to use high-sulfur and low-heat value coal in producing briquette, leading in low coal burning cost.

The invention provides an internal combustion heating rotation conical biomass gasification furnace which is characterized in that the furnace body is internally provided with two concentric cones, wherein the external cone is a rotation cone and the internal cone is a fixed cone; the top of the rotation cone is connected with a material cylinder at the lower section; the top of the fixed cone is communicated with a smoke gas pipeline; the bottom end surface of the fixed cone is closed and the lower part thereof is tangentially connected with a combustion pipeline; the side wall of the furnace body is arranged as jacket structure; the jacket comprises a high-temperature resistance furnace wall, a combustion gas pipeline, a heat preservation layer and an external wall of the gasification furnace sequentially from inside to outside; the airflow passage in which the combustion gas is led out from the gasification furnace is that the combustion gas is led to the bottom port of the combustion gas pipeline from the bottom of the gasification furnace along the inclined surface of the conical furnace bottom; the delivery outlet of the combustion gas is arranged at the upper part of the combustion gas passage; and a gas transmission pipeline connected on the delivery outlet of the combustion gas outside the gasification furnace is connected with a gas storage cabinet by an induced draft fan. The gasification furnace greatly improves the biomass gasification rate and the heat value of the combustion gas.

The invention discloses an efficient novel biomass solid molded fuel combustion apparatus. The efficient novel biomass solid molded fuel combustion apparatus comprises a hearth, a hopper and a feeding preheating channel, wherein a combustion chamber is arranged inside the hearth; a heat exchange tube is arranged inside the combustion chamber; one end of the heat exchange tube is communicated with a water inlet pipe, while the other end of the heat exchange tube is connected with a heat energy output device by use of an outlet pipe; a feeding hole is formed in the bottom of the sidewall of the hearth; a charging hole is formed in the top of the hopper, while a discharge hole is formed in the bottom of the hopper; the front and rear ends of the feeding preheating channel are connected to the discharge hole of the hopper and the feeding hole of the hearth, respectively; a conveying mechanism is arranged at the bottom of the feeding preheating channel; a heat conducting pipeline is arranged between the top of the feeding preheating channel and the top of the hearth; at least one stirring roller is arranged at the feeding preheating channel; rake teeth are arranged on the stirring roller. The efficient novel biomass solid molded fuel combustion apparatus is capable of increasing the heat energy utilization rate, advantageous for sufficient combustion of the fuel and capable of preventing coking.

The invention relates to a scrap steel preheating device through a horizontal continuous charging electric-arc furnace. The scrap steel preheating device comprises a preheating section body, a transporting roller way, an igniter, gas transmission equipment and an exhaust port; the transporting roller way is arranged on the lower portion of the preheating section body, and a cavity is formed by thetransporting roller way and the inner bottom of the preheating section body; the gas transmission equipment is arranged in the cavity and provides combustion-supporting gas for the preheating sectionbody, a vent hole is formed in the transporting roller way, and the igniter is arranged on the upper portion of the transporting roller way; and a flue gas inlet and a feeding inlet are formed in thetwo ends of the preheating section body correspondingly, the exhaust port is formed in the upper portion of the preheating section body and formed close to the feeding inlet. When the scrap steel preheating device is used, the temperature of scrap steel is increased to the great extent through heat of coal combustion, the preheating effect is good, the production rhythm of the electric-arc furnace is accelerated, and the production cost is reduced; and meanwhile, due to the heat of coal combustion in the device, the situation that harmful gas dioxin is generated when the flue gas temperatureis decreased to 300-400 DEG C due to the fact that the scrap steel is preheated by purely utilizing flue gas is avoided, and the ecological environment is protected.

The invention relates to the technical field of energy environmental engineering and provides a method for mixed burning of agriculture and forestry waste, sludge and household garbage by using a grate furnace. The method comprises burning the agriculture and forestry waste, sludge and household garbage in a grate garbage burning furnace, igniting by using agriculture and forestry waste, and adding household garbage and sludge in the furnace to realize mixed burning when the temperature of the furnace rises to 850 DEG C, wherein the mass percent of the agriculture and forestry in the mixed fuel is within 40 percent, the mass percent of sludge in the mixed fuel is within 30 percent, the burning temperature of the grate burning furnace is controlled at 850 to 1000 DEG C, and the smoke gas generated by burning stayed in the furnace is controlled above two seconds. The invention is low in the cost, improves the burning efficiency of the garbage burning furnace, solves the problem of pollution caused by the sludge, ensures that the agriculture and forestry waste can be recycled, reduces discharge of pollutants, particularly heavy metal and dioxin and reduces the consumption of fossil energy.

The invention discloses a swirling flow premixing type burner. The swirling flow premixing type burner comprises a first burner brick, a second burner brick, a burning-supporting air chamber, an air swirler and a fuel gas nozzle, wherein a central hole is formed in the first burner brick; an upper section of the central hole is matched with the shape of the exterior outline and the dimension of the second burner brick; a lower section of the central hole is a cone-shaped hole with a large upper end aperture and small lower end aperture; a premixing chamber is arranged in a central part of the second burner brick; the fuel gas nozzle is a swirling flow nozzle and consists of a nozzle body and a gas inlet pipe which is connected with the nozzle body; the first burner brick is arranged on a furnace body; the second burner brick is arranged in the first burner brick; the air swirler is positioned at the inlet of the premixing chamber arranged in the second burner brick; the fuel gas nozzle is combined with the air swirler; the nozzle body of the fuel gas nozzle is positioned below the air swirler; and the burning-supporting air chamber is arranged on the furnace body.

The invention discloses a system and method of blending combustion of a coal type with a low ash melting point in a coal-fired utility boiler and belongs to the technical field of coal-fired utility boiler operation. The coal-fired utility boiler is equipped with a positive-pressure, direct-firing, double-in and double-out steel ball coal pulverizer; the method of blending combustion of coal type with the low ash melting point in the coal-fired utility boiler comprises the following steps: the coal type with the low ash melting point and a coal type with a high ash melting point are sent into the steel ball coal pulverizer from one end of the positive-pressure, direct-firing, double-in and double-out steel ball coal pulverizer respectively; after thorough mixing and grinding, powder is uniformly output from two ends of the steel ball coal pulverizer; after the blending, compared with the melting point of the coal type with a low ash melting point, the melting point of the blended ash is increased to a relatively large extent; under various boiler loading, through adjusting the belt rotational speeds of coal feeders that correspond to the coal type with the low ash melting point and the coal type with the high ash melting point, the mixing proportion control is realized on the coal type with the low ash melting point. The system and method of blending combustion of coal type with the low ash melting point in the coal-fired utility boiler can improve the combustion and utilization proportion of the coal type with the low ash melting point to the utmost extent, on the basis of effectively relieving the boiler from coking and ensuring the safe operation of the boiler; the cost of fuel is reduced; the economical efficiency in the operation of the coal-fired utility boiler machine set is improved.

The present invention discloses a wire rod for high-carbon steel cut wire shot, and the wire rod is characterized by comprising the following components by weight: 0.70-0.86% of C, 0.50-0.90% of Mn, 0.15-0.35% of Si, no more than 0.40% of Cr, no more than 0.05% of V, no more than 0.020% of P, no more than 0.015% of S, no more than 0.20% of Cu, no more than 0.0065% of N, and the balance of Fe and unavoidable impurities. The invention also provides a production method of the wire rod for high-carbon steel cut wire shot. The wire rod for high-carbon steel cut wire shot and production method thereof can meet the technical requirements of wire product industry on new product; the wire rod for high-carbon steel cut wire shot has the characteristics of high purity, uniform composition and tissue and the good cleaning rod performance, has good social and economic benefits, and is worthy of promotion.

The invention provides a combustion-supporting decoking coal saving agent, relating to a coal saving agent. The invention aims at solving the problems that coal cost of an enterprise is high and a coked block is produced in a combustion process. The combustion-supporting decoking coal saving agent provided by the invention is formed by mixing potassium hypermanganate, sodium chloride, dimethylcarbinol-ethanol, rare earth lanthanum, dispersing agent, calcium chloride, high-alumina vanadine, olefine acid-dimethylbenzene acrylate copolymer, methylisobutylketone, potassium peroxide, polyoxyethylene sorbitan monostearate, sulphur-fixing agent, Tween-60, tributyl phosphate, diisopropyl ether, descaling agent and penetrant. The combustion-supporting decoking coal saving agent provided by the invention has the advantages that: firstly, after the combustion-supporting decoking coal saving agent is used, furnace box temperature is improved, slag carbon content is reduced, and dust and harmful gases such as carbon monoxide and sulphur dioxide are removed; and secondly, the combustion-supporting decoking coal saving agent provided by the invention also has decoking function, thus deslagging labour intensity is reduced, comprehensive fuel coal saving rate is 7-16%, and production cost is reduced. The combustion-supporting decoking coal saving agent provided by the invention is mainly used for preparing the coal saving agent.

The invention discloses a production method of a low-cost high-toughness Q460qDNH steel plate. The method is used for producing the Q460qDNH steel plate with good surface quality and mechanical property through proper processes of smelting, continuous casting, heating, controlled rolling, controlled cooling and descaling. The steel plate is good in strength, plasticity and toughness, and the structure is fine ferrite and pearlite. The yield strength of the steel plate ranges from 498 MPa to 546 MPa, the tensile strength ranges from 589 MPa to 625 MPa, the ductility ranges from 21% to 26.5%, and the impact energy at the temperature of minus 20 DEG C ranges from 218 J to 287 J. A plate blank adopts a hot charging mode, the charging temperature is high, the heating time is short, and the energy consumption is low. The steel plate does not need heat treatment and is short in production period and low in cost.

The embodiment of the invention discloses a heat treatment method and system for preparing a high-performance iron-based nano crystal alloy magnetic core. The heat treatment time is shortened by increasing the charging temperature and heating rate, magnetic ordering inside the magnetic core can be effectively controlled to some extent, the magnetocrystalline anisotropy is reduced, and the performance of the magnetic core is improved. The heat treatment method for preparing the high-performance iron-based nano crystal alloy magnetic core comprises the steps that a heating system is started; a preset temperature T0 is set for the heating system, and preset temperature information is sent to a heat treatment furnace; the heat treatment furnace controls a furnace chamber to be heated to the preset temperature T0 from room temperature; the well wound magnetic core is put into the furnace chamber of the heat treatment furnace; the heating system starts an air exhaust program; air in the furnace chamber is exhausted through the heat treatment furnace till the furnace chamber is in a vacuum state; the heating system starts an air injection program; gas is injected into the furnace chamber through the heat treatment furnace; the heating system starts a first heating accelerating program, the first heating rate v1 is set, and heating is conducted at first target temperature T1 for a first heat preservation time t1.

The invention discloses a fire coal additive, which comprises the following steps: allocating 150-170 Kg potassium perchlorate and 100-120 Kg as firing agent; allocating 80-100 Kg natrium hydroxydatum, 200-220 Kg soda and 150-180 kg barium nitrate as activator; allocating 80-100 Kg salt and 80-100 Kg potassium chloride as findings; fetching each material; disintegrating with grinder; sieving; mixing completely; getting the product; using mutual action of silicon trioxide, di-iron trioxide, alumind, titania, calcium oxide, magnesium oxide and metal alkalinous material; increasing the temperature of back furnace tank; decreasing the carbon content of cinder; improving calorific efficiency of boiler; making rate of economizing coal reach above 16% and carbon content low above 20%. So it can decrease the discharge of black smoke, which belongs to environment-friendly type energy efficient technology.

The invention discloses a high-efficiency low-NOx chain grate furnace coupled with swirling pulverized coal combustion and enhanced flue gas recycling, By reducing the fraction of combustion in gratezone, A low NOx swirl pulverize coal burner and a burned-out air are arrange on that left and right side walls, and an enhanced flue gas recirculation is constructed (i. E., flue gas recirculation isintroduce from a primary air chamber at the lower part of the grate, a front and rear arch secondary air burner and a swirl burner respectively), Deep-air staged low-nitrogen combustion conditions including horizontal staging and suspension staging and enhanced flue gas recirculation low-nitrogen combustion conditions are formed to significantly inhibit NOx formation. A low NOx swirl pulverize coal burner is added to increase that combustion fraction of the suspension combustion zone, Flue gas temperature level and hot air utilization ratio can reduce exhaust gas loss and increase fly ash burnout. In addition, reasonable distribution of flue gas in grate combustion zone and reduction of combustion share can help to improve slag burnout rate, thus achieving the effect of significantly improving boiler thermal efficiency.

A non-polluting waste cracking gasifier with a high-temperature superconducting tube comprises a furnace cover, a furnace body, a furnace seat, a high-temperature superconducting heat exchanger, a rotating smoke tube radiator, a heater, a feeder and a superconducting waste heat recovery device, the high-temperature superconducting heat exchanger is arranged in the furnace body, the heater in the furnace seat at the lower portion of the furnace body uses combustion gas self-produced by the cracking gasifier to heat the evaporation section of the high-temperature superconducting heat exchanger,and high-temperature radiant heat is quickly conducted to wastes moving in the upper portion of the furnace body from different angles through the high-temperature superconducting heat exchanger, therotating tube radiator and a round head heat exchanger in order to complete efficient and rapid cracking gasification of the wastes under a high-temperature anoxic condition. The cracking gasifier hasthe advantages of high temperature, balanced furnace temperature, large gas yield, effectiveness in overcoming the bonding, bubbling, caking and coking dangers formed by local overheating of the wastes in the furnace, avoiding of the generation of cracking flue gas, shielding of the pollution of harmful substances released by a cracked substance to the environment, and achieving of significant avoiding social and economic benefits by using the residual gas obtained after cracking to generate electricity and using solid waste residues as an activated carbon chemical raw material.

The present invention provides a tertiary air pipe coal powder preheating and preburning technique for cement predecomposition kiln. Between rotary kiln and suspension preheater is st a decomposition furnace as second heat source of said system, the coal powder can be sprayed into the tertiary air pipe according to a certain propoertion from tertiary air pipe wall at a certain distance from tertiary air inlet of decomposition furnace to make the coal powder and tertiary air be together fed into the decomposition furnace. Generally, the coal powder can be sprayed into the tertiary air pipe at a distance 5-10 m from tertiary air inlet of decomposition furnace. The ratio range of the coal powder fed into the tertiary air pipe and the coal powder directly fed into decomposition furnace is 2:8-3:7, and the air-solid ratio of coal powder fed into tertiary air pipe takes that tertiary air temp. of decomposition furnace is reached to 950 deg.C-1000 deg.C as criterion.