61results about How to "Stable furnace temperature" patented technology

The invention provides a process and device for carrying out stage dry distillation on oil shale under the state of full recycle, with the gas as the heat carrier. The oil shale is divided into three different sizes (such as 0-6mm, 6-20mm and 20-50mm) through crushing and screening, and the oil shale is firstly dried and heated to the temperature between 50 DEG C and 150 DEG C by the waste smoke exhausted from gas heating furnaces and then enters into the different sizes of furnaces for dry distillation to undergo dry distillation. After being treated by water spraying and an indirect cooling tower, a rotary trapper and an electric trapper for oil collection, the dry distillation oil and gas undergo oil-gas-water separation, and after separation, the oil enters into a storage tank, the water enters into a circulating water tank and the first part of gases serves as the heat carrier and is recycled, the second part of gases is used as the fuels for the heating furnaces and the third part of gases is used as the fuel gases for power generation.

The invention relates to a one-step copper smelting technology and a device thereof. The interior of a furnace body is divided into three zones, namely a smelting zone, a blowing zone and a refining zone, by a retaining wall; and two rows of spray guns which are arranged in a staggered manner and have an included angle with a vertical line are arranged at the bottoms of the zones; return dust is mixed and then added into mixed copper concentrate and a solvent through a charging opening of the smelting zone, oxygen-enriched air is sprayed through the spray guns to carry out self-heating smelting, to generate copper matte; the spray guns in the blowing zone spray oxygen-enriched air so as to blow copper matte into crude copper and slag; the spray guns in the refining zone supply oxygen-enriched air for oxidization, and supply natural gas as a reductant for reduction, and the generated anode copper with high purity is interruptedly discharged form a copper discharging opening, so that the low-altitude pollution problem caused by SO2 can be solved, the operation environment can be greatly improved, the utilization rate of sulfur and heat can be obviously increased, and further the economic benefits can be increased further; in addition, the invention provides a one-step copper smelting technology which is more advanced, shorter in flow, lower in investment, lower in comprehensive energy consumption, higher in recovery rate, and better in comprehensive utilization in comparison with the existing continuous copper smelting technology.

The invention relates to a method and device for continuously treating lead anode slime by bath smelting. The method comprises the following steps: proportionally adding lead anode slime, recycled materials and nut coke as charging materials into an oxygen bottom blowing bullion lead furnace for smelting to generate bullion lead of which the bullion grade is 25-50%, primary slag and primary soot; adding the bullion lead into an oxygen bottom blowing silver-smelting furnace to react to generate oxidizing slag, secondary soot and alloy liquid of which the bullion grade reaches 70-80%; introducing the alloy liquid into an oxygen top blowing refining furnace to react to generate tellurium slag, clear alloy slag, secondary soot and alloy liquid of which the bullion grade reaches 96-98%; and discharging the oxidizing slag, then enabling the oxidizing slag to enter a slag bullion lead furnace, and adding the nut coke to react to generate low-grade bullion lead, secondary slag and secondary soot, wherein the low-grade bullion lead is returned for proportioning. The invention realizes the continuous treatment of the anode slime, strengthens the smelting process, improves the direct recovery rate of the bullion, lowers the production cost, reduces the environmental pollution, and shortens the treatment period of the anode slime.

The invention belongs to the technical field of antimony smelting in the industry of non-ferrous metal metallurgy, and particularly relates to a technology and a device thereof adopting bottom blowing molten bath for antimony reduction and smelting in the process of antimony smelting, wherein the bottom blowing molten bath smelting technology is adopted, antimonial raw material and burden are uniformly blended according to a suitable proportion and fed into a molten bath antimony smelting furnace for smelting to carry out reduction and slag making reaction; oxygen, nitrogen, natural gas or coal gas are fed into the melt through a gas spray gun from the bottom part or bottom side part of the molten bath antimony smelting furnace; the gas is combusted to release heat, so as to ensure the temperature of the furnace, participate in the oxidation and reduction reaction of the burden, and vigorously blend the melt, as a result, the heat and mass transfer and reaction speed in the smelting furnace can be improved, the burden can be quickly reacted to produce lean antimony slag, crude antimony and flue gas, the antimony can be continuously processed, and the slag type with little corrosion on the refractory material is produced. The technology and the device have the advantages of low investment, energy consumption and cost, high automation degree and environmental protection.

The invention relates to an energy storage-containing arc furnace energy-supply power system and a control method thereof. The system comprises a power grid access and measuring unit, a network-side variable flow unit, a direct current bus, an energy storage power control unit, a high power energy storage device, an inverter unit and a main controller. According to the method, the power supply of an arc furnace is kept stable when a power grid is abnormal, the impact on the power grid is reduced, and the problems that the power factor of power grid access points is low and three phases are imbalanced caused by the arc furnace are solved. When the power grid voltage flickers and power fails in a short time, the power can be uninterruptedly and stably supplied to the arc furnace, so that the furnace temperature is stabilized and the quality of metallurgical products is ensured; meanwhile, the adverse effects on the power grid caused by factors of power fluctuation and low power factor of the arc furnace can be reduced.

The invention discloses a method for burning sludge in chain grate. A sludge feeding port is arranged on rear arch on the side surface of the chain grate used in the method; and coal and sludge are respectively added into the furnace of the chain grate. The method comprises following steps: adding the coal into the grates of the chain grate through a coal valve from a coal scuttle in front of the chain grate; preheating, drying, and burning the coal sequentially along with the movement of the grates of the chain grate; uniformly adding the squeezed and dewatered sludge alone from the sludge feeding port into the chain grate, wherein the sludge falls onto the grates in a position in the vicinity to the rear arch at 1/2 to 3/4 the tail section of the furnace of the chain grate; and igniting and burning the sludge added in the position by the temperature of the tail section of the furnace of the chain grate when the coal burning is substantially ended, wherein the added amount of the sludge is calculated and adjusted in real time according to the heat value of the coal and the temperature when the added amount is stabilized. The chain grate can ensure complete burning of coal when used for burning various kinds of sludge with heat energy utilization value, thus effectively utilizing the heat value of the sludge and improving the heat efficiency of the chain grate.

Provided is a combined type incinerating device capable of controlling toxic gases and heavy metal content in waste incineration smoke. An incinerator hearth is composed of a first combustion chamber and a second combustion chamber, the first combustion chamber is a horizontal type combustion chamber, the second combustion chamber is a vertical type combustion chamber, heat insulation type combustion chambers are adopted by the whole first combustion chamber and the second combustion chamber of enough height, multiple primary air inlet chambers are adopted by the first combustion chamber to carry out chamber division and amount selected air supply according to needs, two rows of secondary air exhaust pipes which blow oppositely and are arranged at the connecting positions of the other two combustion chambers blow in secondary air, slaked lime adding devices are arranged out of the hearth at the horizontal height of the center of an upper boiler barrel and the hearth of the horizontal height at the center of a lower boiler barrel of a double-boiler-barrel vertical type waste heat boiler, and the slaked lime adding devices inject quantitative slaked lime into the hearth in the flow direction of the high temperature smoke between the upper boiler barrel and the lower boiler barrel. According to the combined type incinerating device capable of controlling the toxic gases and the heavy metal content in the waste incineration smoke, the structural characteristics of the combined type incinerating device is utilized, the controlling over all techniques and parameters is combined, source controlling over the toxic gases and heavy metal is achieved in an incineration process, the pressure of tail gas purification work is relieved fundamentally, and market needs are met.

The invention discloses a domestic refuse incineration system for preventing and controlling flue gas pollutant. A material grabbing hopper of a refuse storage vault feeds materials into a compressionand crushing system, the compression and crushing system is connected with a drying system through a conveying system, a refuse discharging opening of the drying system is connected with a refuse feeding opening of an integrated incinerator, a hot bad smell outlet of the drying system is connected with an air inlet of the integrated incinerator, a combustible gas outlet and a flue gas discharge opening of the integrated incinerator and a hot air outlet of a second-stage heat exchanger are connected with a second combustion chamber, and the second combustion chamber, a first-stage heat exchanger, a quick cooling chamber, the second-stage heat exchanger and a flue gas desulfurization device are connected in sequence; and a hot air outlet of the first-stage heat exchanger is connected to anair inlet of the drying system. The domestic refuse incineration system is rigorous and reasonable in structure, the flue gas pollutant can be prevented and controlled in key processes including refuse drying, gasification burnout, flue gas burning purification and flue gas cooling, heat energy, combustible gas and combustion-supporting air needed by the system in all processes are provided, and the direct cost is almost zero.

The invention relates to the technical field of coal gasification, in particular to a fluidized bed gasifier, a coal gasification system and a method, can satisfy the heat requirement of overall reaction in the furnace, have no need for introducing oxygen burning coal to provide heat, lower the risk of easy slagging in the gasifier due to introduction of oxygen, at the same time can promote forward overall reaction in the furnace, have no need for returning substantial synthesis gas to the furnace to increase the methane yield, and lower the risk of inhibition on overall reaction in the furnace caused by return of synthesis gas to the furnace. According to the fluidized bed gasifier, the bottom is a gas distribution plate area, a fluidized bed reaction area is disposed above the gas distribution plate area, a variable diameter section with a gradually enlarging inner diameter from the bottom up is disposed between the fluidized bed reaction area and the gas distribution plate area, thebottom of the fluidized bed gasifier is equipped with deslagging port, the side wall of the fluidized bed gasifier corresponding to the fluidized bed reaction area is equipped with coal inlets, and the lower part of the variable diameter section is equipped with a carbon carrier inlet.

The invention discloses a high-purity waste ammonia gas incinerating system. A high-purity waste ammonia gas incinerating furnace, a combustion device, an ammonia gas pipeline, a combustion supportingair pipeline, a fuel pipeline, a heat exchange device, a smoke discharging draught fan and a control device are included. The high-purity waste ammonia gas incinerating furnace comprises a furnace body, a first gas inlet distribution device, a second gas inlet distribution device and a fire barrier. The first gas inlet distribution device is connected with the ammonia gas pipeline through an ammonia gas pipeline connector, and the second gas inlet distribution device is connected with the combustion supporting air pipeline through an air supplementing port. When fuel generates flames in a hearth through a flame nozzle of the combustion device, the first gas inlet distribution device is used for distributing guided-in ammonia gas on the flame peripheries for sufficient combustion, and thesecond gas inlet distribution device is used for axially spraying guided-in combustion supporting air so that an air wall can be formed on the flame peripheries. Furthermore, a corresponding high-purity waste ammonia gas incinerating furnace and a corresponding incinerating technology are disclosed. Through the high-purity waste ammonia gas incinerating system, furnace and technology, in the heating power incineration process, generation of nitric oxide can be controlled while high-purity waste ammonia gas is completely combusted.

The invention discloses an immersed top-blown converter. The immersed top-blown converter comprises a top-blown converter body, wherein a material inlet and outlet is formed in the top of the top-blown converter body, and an immersed top-blown spray gun is inserted into the material inlet and outlet. The reaction efficiency of the converter is high, the immersed top-blown molten pool is used for smelting, materials can be continuously added into the converter, the blowing-out charging time is shortened, and the smelting operation rate is improved. Due to the fact that the immersed top-blowing spray gun can be directly inserted into the molten pool and a hydrocyclone is arranged in the immersed top-blowing spray gun, the molten pool is violently stirred by the immersed top-blowing spray gun, materials are mixed more evenly, and the reaction efficiency in the converter is improved. The top-blown converter is provided with a detection bar, a melt can be sampled and analyzed at any time, the blowing-out sampling frequency is reduced, the converter temperature is kept constant, and the service life of the converter is longer. A supporting ring and supporting roller combined structure is adopted for supporting the top-blown converter, and large and small gear transmission is adopted, so that transmission is more stable, and vibration impact on the converter body is overcome.

The invention discloses a furnace temperature control method for coping with fluctuation of a blast furnace gas utilization rate. The furnace temperature control method comprises the following steps of acquiring a ton iron fuel ratio before fluctuation of the gas utilization rate, a carbon monoxide utilization rate before fluctuation and a carbon monoxide utilization rate after fluctuation; acquiring a fuel ratio control value by using the following formula FR = FR<1> + ((eta CO) <2>-(eta CO) <1>) x (0.0034 (eta CO) <2><2>-0.4177 (eta CO) <2> + 17.192), wherein in the formula, FR represents the fuel ratio control value, FR<1> represents a ton iron fuel ratio before fluctuation of a gas utilization rate, (eta CO) <1> represents the carbon monoxide utilization rate before fluctuation, and (eta CO) <2> represents the carbon monoxide utilization rate after fluctuation; and adjusting the blast furnace fuel ratio according to the fuel ratio control value. According to the furnace temperaturecontrol method for coping with the fluctuation of the blast furnace gas utilization rate, the fuel ratio control value after the fluctuation of the blast furnace gas utilization rate is quantified. When the furnace condition fluctuates and the gas utilization rate changes greatly, the fuel ratio control value can be quickly determined, the blast furnace fuel ratio is adjusted to keep the furnacetemperature stable, and the molten iron quality is guaranteed.

The invention relates to a device for removing dioxin from flying garbage dust and a treatment method of the device. According to the device, the discharge hole of a cabin is communicated with a thermolysis furnace; the thermolysis furnace is communicated with a nitrogen compensating tank, so that the thermolysis furnace is in a sealed environment in the presence of the protective nitrogen gas; a cooling pipeline a with a water jacket is connected to the upper end of the thermolysis furnace; the cooling pipeline a is communicated with a cooling dust collector; a cooling pipeline b with a water jacket is communicated with the upper part of the cooling dust collector; the cooling pipeline b is communicated with a cloth belt cooling dust collector a; a conveying pipeline is communicated with the lower end of the thermolysis furnace; a feeding hole communicated with a spiral conveying cooler is communicated to the lower end of the conveying pipeline; the discharge hole in the spiral conveying cooler is communicated with a pipeline; the pipeline is communicated with a cloth belt cooling dust collector b. The device can be adopted by a user for harmless thermolysis treatment on garbage flying ash, and is large in treatment capacity, high in automation degree and energy-saving, so that an environment can be free of dust or pollution.

The invention discloses a novel furnace bottom distributor of a sieve-plate-free fluidizing chlorination furnace, which comprises a basin-shaped casing. A plurality of horizontal chlorine direct connection pipes and upward sloping chlorine oblique connection pipes are arranged along the lateral face of the casing, and the horizontal chlorine direct connection pipes and the upward sloping chlorineoblique connection pipes are distributed alternately. Due to the fact that the horizontal chlorine direct connection pipes and the upward sloping chlorine oblique connection pipes are distributed alternately, the chlorine oblique connection pipes also form a protective screen for the chlorine direct connection pipes while forming a self eddy protective screen, and thick calcium magnesium impurities and furnace clinkers are not apt to block the connection pipes. Simultaneously, airflow distribution can be even, the impurities are prevented from entering the connection pipes, so that certain fluidization speed is retained, furnace temperature is led to be stable, fluidization bed height is reasonable, stability and stability of production are improved, operation is easy and simple, chlorineunit consumption is reduced to 0.98t/t, sorting range of rich titanium material is improved, maximum content of the calcium magnesium impurities of the rich titanium material is improved to 4.5%-5%.

The invention belongs to the technical field of sintering furnaces, and particularly relates to a continuous vacuum sintering furnace. The continuous vacuum sintering furnace comprises a vacuum furnace-entering preparation chamber, a sintering chamber with a plurality of temperature zones and an air cooling chamber which are sequentially communicated, wherein a gate valve is arranged at one end ofthe vacuum furnace-entering preparation chamber and one end of the air cooling chamber; the vacuum furnace-entering preparation chamber, the sintering chamber with the plurality of temperature zonesand the air cooling chamber respectively form three independent spaces through the gate valves; the vacuum furnace-entering preparation chamber, the sintering chamber and the air cooling chamber are respectively communicated with a vacuum unit and are respectively provided with a guide rail; a material pushing oil cylinder, a preparation chamber bracket and a sintering material frame are arrangedin the vacuum furnace-entering preparation chamber; and tray heat insulation plugs are arranged on two end sides of the sintering material frame. Since there is no partition in the sintering chamber,a vacuum unit is used in common, and there is no conveying mechanism in the sintering chamber, so that the overall complexity is greatly reduced, and the cost is reduced. Heating bodies are arranged at the periphery and the center of the interior of the sintering chamber, so that the heat transfer distance is shortened by one time, the temperature uniformity speed is increased, and the sintering time is shortened.

The invention discloses an excess air coefficient management system for a kiln. The excess air coefficient management system comprises a burner arranged in the kiln, a thermocouple, a temperature control instrument, a fuel gas actuator, a fuel gas proportional valve, an air actuator and an industrial personal computer. The fuel gas actuator and the fuel gas proportional valve are connected to a fuel gas pipeline of the burner in series one after another. The air actuator is connected to an air pipeline of the burner in series. An air pressure detection device of the fuel gas proportional valveis connected with the air pipeline of the burner. The thermocouple, the industrial personal computer, the fuel gas actuator and the air actuator are connected with the temperature control instrument.According to the baking technology of green bricks, burner sets have different optimal air-fuel ratios during the different firing stages. Meanwhile, when the kiln is not in operation, the burner isin a low fire state, combustion-supporting wind can achieve automatic adjustment and the optimal ratio of fuel gas. The whole process is completely controlled by the program edited in advance, precisecontrol over excess air coefficients is achieved, the stability of temperature of the hearth is ensured, the firing efficiency is improved, and energy consumption is reduced.

The invention relates to a device for semiconductor laser unit Zn impurity source diffusion. The device comprises a first diffusion heating furnace and a second diffusion heating furnace which are arranged on a track in sequence. The first diffusion heating furnace is in the shape of a groove with one end sealed. The second diffusion heating furnace is in the shape of a hollow-out ring. The position, at one end of the track, behind the second diffusion heating furnace is provided with a support. The support is provided with a quartz tube with one end sealed and the other end open. A first thermocouple and a second thermocouple are sequentially arranged in the quartz tube in the longitudinal direction. The front-half portion of a quartz boat is arranged on the first thermocouple. The rear-half portion of the quartz boat is arranged on the second thermocouple. According to the device, the separation of a diffusion source and a chip is adopted, a double-temperature area is adopted to control the temperature of the diffusion source and the temperature of the chip, and during the diffusion process, the temperature of the diffusion source and the temperature of the chip are controlled so that the stability of a furnace temperature can be guaranteed; GaAs on the surface layer of the chip of a laser unit is prevented from decomposing in large quantity under the diffusion temperature, so that a high-concentration surface layer which has the advantages of being bright in surface, even in distribution of the Zn concentration, good in repeatability, and free of damage is obtained.

The invention discloses a constant-pressure constant-flow sludge pumping system, relates to the technical field of sludge disposal equipment, and aims to solve the problem that an existing sludge pumping system cannot continuously convey sludge at constant pressure and constant flow. The system comprises a sludge plunger pump, a hydraulic system and an electric control system. The hydraulic systemcomprises a motor, three variable plunger oil pumps, an oil tank, a hydraulic control three-position four-way reversing valve for controlling the main oil cylinder, two first electromagnetic three-position four-way reversing valves for controlling discharge cone valves, and two second electromagnetic three-position four-way reversing valves for controlling feeding cone valves. The variable plunger oil pumps are located above the oil tank and connected with the oil tank through oil pipes. The electric control system comprises a PLC, a displacement sensor and a pressure transmitter, wherein thedisplacement sensor and the pressure transmitter are in control connection with the PLC. By means of the system, sludge can be continuously conveyed at constant pressure and constant flow, continuousproduction is achieved in the aspects of sludge carbonization and sludge thermal hydrolysis, the production efficiency is improved, the furnace temperature can be stabilized in the aspect of sludge incineration, and meanwhile, later tail gas treatment is stable.

The invention provides a continuous hydrogen decrepitation method for a rare earth permanent magnetic alloy. The method is carried out in a continuous hydrogenation furnace provided with an activation chamber, a hydrogen absorption chamber, a first dehydrogenation chamber, a second dehydrogenation chamber and a cooling chamber. The continuous hydrogen decrepitation method comprises the following steps that the rare earth permanent magnetic alloy is activated in the activation chamber; selective hydrogen absorption is carried out in the hydrogen absorption chamber; circulating heating dehydrogenation is carried out in the first dehydrogenation chamber and the second dehydrogenation chamber; cooling is carried out, that is, forced cooling is carried out in the cooling chamber through argon. The heating dehydrogenation process in the first dehydrogenation chamber is divided into two stages; the temperature in the first stage ranges from 400 DEG C to 550 DEG C, and the temperature in the second stage ranges from 550 DEG C to 600 DEG C; the heating dehydrogenation process in the second dehydrogenation chamber is divided into two stages; and the temperature in the first stage ranges from 550 DEG C to 600 DEG C, and the temperature in the second stage ranges from 400 DEG C to 550 DEG C.

The invention discloses a mesh belt type sintering furnace. The mesh belt type sintering furnace comprises a rack, a furnace body is arranged on the rack, a conveying belt is rotationally installed on the rack, a feeding port and a discharging port are formed in the two ends of the furnace body respectively, the conveying belt penetrates through a furnace cavity of the furnace body through the feeding port and the discharging port, baffles are arranged on the portions, at the discharging port and the feeding port, of the furnace body, the two baffles shield the feeding port and the discharging port respectively, and two driving mechanisms used for driving the two baffles to be opened intermittently are arranged on the rack. According to the mesh belt type sintering furnace, when an installed powder metallurgy mold is conveyed to the feeding port through the conveying belt, the driving mechanism moves the baffle to open the feeding port, and after the mold enters the furnace cavity of the furnace body, the driving mechanism moves the baffle to shield the feeding port, interaction between external cold air and hot air in the furnace cavity of the furnace body during working of the furnace body is reduced, so that the temperature of the furnace in the furnace cavity of the furnace body is relatively stable, and the quality of finally sintered and molded parts is improved.