109results about How to "Increase furnace temperature" patented technology

The invention relates to a model for optimally controlling a heating system of a large walking beam type heating furnace plate blank, which belongs to the technical field of industrial heating. A billet steel heating system optimizing model is adopted to optimize the order of entering the furnace for the billet steel of different steel type; the billet steel heating time and the temperature of each segment of the heating furnace are optimized; and the temperature change of the billet steel in the heating process is predicted. The model consists of a temperature control module of a single steel type of billet steel, and a heating optimal control module of multiple steel types of billet steel, wherein one module aims at simulating the heating process of a signal block of billet steel, and the other module aims at simulating the heating process under the condition of 10 blocks of billet steel entering the furnace, i.e. mixed loading furnace entering condition. The model is adopted to optimize the heating system of the billet steel so as to avoid the overhigh heating temperature of the billet steel and reduce the oxidation burning loss of the billet steel; reasonable heating time can be adopted to reduce unnecessary fuel waste and fuel consumption; and the model is conducive to scientifically and reasonably regulate the operation parameters of the heating furnace and meet the requirements on billet steel heating quality.

The invention discloses a burning quality analysis and control system used for industrial stoves such as heating furnace, hot blast stove, boiler. Sampling pipe disposed at tail of the stove or in flue transfers sampled flue gas to purifying sampling chamber after the flue gas has been cooled, and oxygen sensor detects oxygen content value of the flue gas. As the oxygen content value of the flue gas in stove exceeds the predetermined value, i.e. excessive air distribution, the oxygen transmits the signal to a controller for comparing, operating or processing, and then transmits the processed signal to speed governor to reduce the rotation speed of blower group, i.e. air reduction, until air amount is appropriate; contrarily, if the oxygen content value of the flue gas in stove, detected by the oxygen sensor, is lower than the predetermined value, i.e. lacking air distribution, the speed governor will increase the rotation speed of the blower group, i.e. air increase, until air amount is appropriate, thereby, keeping the air consumption system of the stove in region of 1.0 to 1.1. The analysis and control system can not only improve burning quality of the industrial stove thereby providing economic benefit for user, but can also greatly reduce the emission of nitrogen oxides or carbon monoxide, therefore, has great popularization value.

The invention discloses a production method and a production system for vanadium pentoxide. The production method comprises the following steps of breaking industrial ammonium vanadate filter cakes and then continuously adding the industrial ammonium vanadate filter cakes into drying equipment and drying by using high-temperature gas; enabling the dried ammonium vanadate to enter calcinating equipment for deaminizing oxidation to obtain mixer of powder vanadium pentoxide or vanadium oxide; and enabling the mixer of the powder vanadium pentoxide or vanadium oxide to enter melting equipment for melting and casting pieces to obtain flaky vanadium pentoxide. According to the production method, drying for dehydration, calcinating for deaminizing and melting and piece casing processes of ammonium polyvanadate or ammonium metavanadate are respectively operated in three sets of equipment; the temperature, the furnace charge stay time and oxidation supply atmosphere (hot air) can be effectively controlled according to different function phases of drying, deaminizing and oxidizing and optimal conditions, and thus each function phase is operated under the optimal condition and further stability, high quality and high yield are achieved. The production method can be used for producing flaky and powder vanadium pentoxide and the yield of metal vanadium is respectively greater than 99 percent.

The invention relates to a technology for smelting ferronickel from lateritic nickel ore by an electric furnace. The technology comprises the steps as follows: (1) raw material is pretreated: the lateritic nickel is counted as one ton, coal powder with the weight of 8-12 percent of the weight of the lateritic nickel or coke powder with the weight of 6-10 percent of the weight of the lateritic nickel is added into the lateritic nickel to be mixed uniformly and returned to a rotary kiln to be sintered at the temperature of 600 DEG C to 1000 DEG C for 3 to 6 hours, wherein, the pre-reduction of 20-30 percent of NiO is achieved; (2) the raw material is put into a submerged arc furnace to be smelted: an electric furnace magnesia and carbon mixture furnace lining is arranged; adjustable electric furnace voltage is set with the high voltage of 280-300V and the low voltage of 200-220V, and that is the high voltage starts arc, and after 30 minutes, the electric furnace is changed to low voltage for smelting and calcining an electrode; the charge of smelting furnace charging material consists of one ton of sintered nickel and 90-120kg of fusing agent lime; coke or coal is added as a reducer; the raw material and the auxiliary material are put into the electric furnace to be smelted; and (3) crude ferronickel is refined: liquid molten iron is put into a finery, and a refining agent is added for refining by oxygen blast. A product contains more than 13 percent of nickel, thereby satisfying the requirement of producing high-quality steel material product; and the recovery rate of nickel element is more than 95 percent. The technology has simple technology, saves energy and has high efficiency.

The invention discloses a household garbage recycling harmless treatment system. The system comprises a garbage sorting mechanism, a mechanism for anaerobic-aerobic preparation of a bio-organic fertilizer from garbage, a garbage burning mechanism and a flue gas purification mechanism. The garbage sorting mechanism, the mechanism for anaerobic-aerobic preparation of the bio-organic fertilizer from the garbage, the garbage burning mechanism and the flue gas purification mechanism are connected into one part through a conveyor belt. The garbage sorting mechanism is separately connected to the mechanism for anaerobic-aerobic preparation of the bio-organic fertilizer from the garbage and to the garbage burning mechanism. The flue gas purification mechanism is connected to the garbage burning mechanism. The system is connected into one part through the conveyor belt and is automatically operated, labor-saving and time-saving. The system can treat the household garbage systematically and cleanly without residue. The system can recycle most of the household garbage, wherein organic maters are prepared into the bio-organic fertilizer and plastic film are recycled and regenerated. Hot wind and marsh gas are adopted to help burning of an incinerator, the furnace temperature is high, the burning is complete, and dioxin can be cracked. The flue gas purification mechanism is provided with a flue gas quencher to prevent the generation of the dioxin. The treatment system is environmental friendly and free of secondary pollution, and is particularly suitable to be used in villages, towns, and middle-sized and small cities.

The invention relates to a biomass gasification concentrating safety and early-warning gas supply system, mainly comprising a feeding rack, a wind-controlled gasification furnace, grouped water spray towers, a horizontal spray filtering purification can, a double-tank tar retriever, a surplus heat utilization device and an underground wet gas reservoir. The invention mainly has the characteristics that 1) the pyrolysis, oxidation and reducing reaction in the gasification furnace can be actively controlled by wind to improve the gasification efficiency; 2) the tar in the system can be recycled, and the energy utilization rate is improved; 3) the gas has a long technical process, high quality and high purity; 4) the components of the gasification machine are easy to maintain independently; 5) the early-warning function has four levels, i.e. blue, yellow, orange and red, and the alarming mechanism can be used to control the system safety automatically. Therefore, the invention is capable of supplying biomass gas in a high efficient and safe manner.

The CS2 reactor furnace includes inner furnace body of refractory material, outer furnace body of refractory material, and heating chamber between the inner surface body and the outer furnace body. In the peripheral of the inner surface body, there are sulfur gasifying furnace and carbon material preheating furnace, and the sulfur gasifying, furnace is connected via sulfur vapor duct to the bottom of the inner furnace body. The CS2 reactor furnace of the present invention has no sulfurizing and oxidizing corrosion of inner furnace body and thus long service life. The material preheating speeds the reaction and raise the product yield. Heating the coal-burning gas furnace via the main fire channel communicated with the furnace body can save fuel and stabilize furnace temperature.

The invention discloses a power generation technique based on pyrolyzation and gasification of refuse derived fuel (RDF) prepared from household refuse and incineration of fuel gas. The power generation method comprises the steps that the household refuse is sorted, pulverized and dried and then is made into the solid RDF; pyrolyzation and gasification are conducted on the solid RDF, so that combustible gas is generated; the combustible gas is incinerated; steam is prepared from hot air obtained through incineration through heat exchange; and the steam is introduced into a steam power generator for power generation. According to the power generation technique based on pyrolyzation and gasification of the RDF prepared from the household refuse and incineration of the fuel gas, the household refuse is made into the combustible solid RDF, and thus formation of dioxin can be effectively restrained; after prepared bars are formed, the moisture content is decreased, the heat value is increased, and the power generation efficiency is improved; the dioxin is completely decomposed by conducting heat-storage incineration of the generated combustible gas through secondary gas at the temperature over 850 DEG C, and waste heat is used for drying the refuse; smoke emission hardly exists under the adsorption action of the pulverized refuse.

The invention belongs to the technical field of chemical coal made gas, and particularly relates to a coal gas production method and device using high-temperature rich oxygen and high temperature steam as a gasification agent. The coal gas production method and device adopt oxygen-enriched air with the oxygen concentration of 25 ~ 30% and with the oxygen temperature of 120 ~ 220 DEG C and the high temperature steam with the temperature of 120 ~ 220 DEG C as the gasification agent for coal gas production; and accordingly, an oxygen-enriched air source and related a heat exchanger, a control valve and pipelines are additionally arranged in an original coal gas production device. The coal gas production method and device well overcome the technical defects of coal gas production by use of a traditional atmospheric-pressure fixed bed gas producer, increase the coal gas producer yield and the coal gas calorific value, reduce the carbon content of ash, and reduce sensible heat loss, and the coal gas unit consumption is reduced by 10 ~ 30%.

The invention is a three-gas mixed burner. And blast-furnace gas circuit, combustion supporting air circuit and coke-oven gas circuit, which are formed by isolation of furnace walls and inner walls, are arranged at the bottom of the burner, flow guide columns are in the center of the circuit; furnace walls and inner isolating walls compose blast-furnace gas channel, combustion supporting air channel and coke-oven gas channel, which are radiation in shape and staggered mutually, the blast-furnace gas channel communicates with the blast-furnace gas circuit, the combustion supporting air channel communicates with the combustion support air circuit, the coke-oven gas channel communicates with the coke-oven gas circuit, three channels at the upper part of the furnace wall are provided with annular channels communicating with them, and the annular channels are equipped with communicating sector jet holes. The advantages are full combustion, high thermal value, low CO content, low cost.

The invention relates to a graphitization furnace and a manufacturing method thereof. The graphitization furnace comprises conductive walls, furnace core plates, carbon blocks and thermal insulation material layers; when the graphitization furnace is manufactured, a furnace core area is calculated firstly; the two conductive walls which are opposite left and right are constructed according to the furnace core area obtained through calculation, and the peripheries of the conductive walls are covered with the carbon blocks; the furnace core plates are arranged on two sides of the conductive walls in a surrounding manner, and width of the defined furnace core is the same as that of the conductive walls; finally, the thermal insulation material layers are additionally arranged on outer sides of the carbon blocks and the furnace core plates. Resistance value of the carbon blocks is larger, so that current can be effectively prevented from being diffused outwards; besides, the width of the furnace core is the same as that of the conductive walls, the thermal insulation material layers are made of a thermal insulation material with larger resistance value, therefore, current can be further prevented from being diffused, the furnace temperature is increased, and the phenomenon of arc strike oxidation of a crucible in the furnace is eliminated.

The invention discloses a high-alumina high-temperature refractory castable for a power station boiler, which is prepared from the following components in parts by weight: 60-80 parts of high-alumina aggregate, 5-12 parts of special-grade kaolin, 5-12 parts of binder, 2-8 parts of silicon micro-powder, 2-10 parts of alumina micro-powder and 1-5 parts of water, wherein in the 60-80 parts of high-aluminum aggregate, coarse aggregate accounts for 30-40%, medium aggregate accounts for 35-45%, and fine aggregate accounts for 20-30%; the binder is prepared from the following components in parts by weight: 20-40 parts of magnesium silicate and 80-60 parts of phosphate. The high-alumina high-temperature refractory castable disclosed by the invention has the beneficial effects that the boiler box temperature can be increased by 60-250 DEG C, the thermal efficiency can be improved to 8%, and the service life of the boiler body is prolonged.

The invention belongs to a catalytic combustion-supporting additive for fire coals of a pulverized coal boiler of a fuel electric plant use, which is composed of powder and liquor. The manufacturing and the using of the additive is realized according to a mechanism that coal is pulverized to powder by a pulverizer and then is blown into the boiler for combustion, and the application of properties of high dispersivity, high permeability, and high catalysis of a high energy catalyst. The manufacturing method of the additive comprises the following steps: firstly, preparation of the powder, and secondly, preparation of the liquor. The using method of the additive is as follows: adding the additive into coals directly, and sending into a coal pulverizer to operate, so as to improve the quality of the pulverized coal, increase the activity of the pulverized coal, and promote the pulverized coal to combust fiercely and fully in the boiler; and spraying the liquor in vaporous to a high-temperature fire zone in the boiler to react with the baking-hot coal, so as to generate water gas to participate in and help the combustion to emit strong heat. The additive has the advantages of small dosage, good effect, and convenience in using, helps to combust efficiently, and has the effect of decoking and deashing.

Disclosed is a rice husk boiling hot blast stove. The rice husk boiling hot blast stove comprises a boiling hot blast stove body, a combustion chamber, an air outlet, a hood, an air blowing box, an air blower, an overhauling observation door, a disc feeder, a rice husk stock bin, a discharging pipe, an ash discharging hopper, an ash discharging valve, a hot air exchange chamber, a duplex ash discharging valve, an air exhaust opening, a water bath dust removal tower, an air exhaust pipe, a pool, a dust mud discharge opening and a wet ash pool. The boiling ho blast stove is characterized in that the combustion chamber is arranged in the boiling hot blast stove body, the air outlet is provided with the hot air exchange chamber, the hood is arranged on the lower portion, the air blowing box is connected with an air blowing pipe and the air blower, the disc feeder is arranged on an outlet of the rice husk stock bin, and is connected with the discharging pipe, the ash discharging hopper is arranged below the stove body, and is connected with the ash discharging valve, a hot air exchanger is mounted in the hot air exchange chamber, the ash discharging hopper and the duplex ash discharging valve are arranged below the hot air exchange chamber, the air exhaust opening in the rear portion is connected with an air inlet pipe of the water bath dust removal tower, and the air exhaust pipe is connected with an induced draft fan; wet ash is loaded in a forklift to be transported outwards, the boiling stove is simple in design and easy to operate, wastes are utilized as fuel, cost is saved, and the rice husk boiling hot blast stove is a very ideal energy-saving hot blast stove.

The invention provides an oxy-fuel combustion furnace used in low-expansion microcrystalline glass manufacturing. The oxy-fuel combustion furnace used in low-expansion microcrystalline glass manufacturing is characterized in comprising a cuboid-structured cavity and a furnace cover positioned on the top of the cavity. A steel-structured fixing frame is arranged on the periphery of the cavity and the furnace cover. A feeding port is arranged on a long side of the cavity. A flue is arranged on a short side of the cavity, and a glass discharge port is arranged on the other short side of the cavity. A bottom wall is arranged on the bottom of the cavity. Tank walls are arranged on two sides of the bottom wall, such that a glass tank furnace is formed. Parapets are arranged above the tank walls on the two sides. More than one burning lances are arranged at a certain height above the parapets. The burning lances comprise natural gas inlets and pure oxygen inlets.

The invention relates to a high-combustion-value biomass particle, which is characterized by being prepared from the following components by weight percent: 30 to 50 percent of bark, 25 to 40 percent of straw, 20 to 45 percent of wood chips, and 2 to 5 percent of combustion-supporting agent. The heated potassium chlorate or potassium permanganate is subsequently decomposed by manganese dioxide to release oxygen, so that oxygen can be supplemented in the entire combustion process of the biomass fuel. The condition of partial hypoxia can be alleviated and the biomass fuel can be completely combusted. Magnesium chloride has the effect of bulking the biomass fuel and preventing coking, thus contributing to the full contact of oxygen with the biomass fuel and the complete combustion of the biomass. After the combustion-supporting agent is used, both the furnace temperature and thermal efficiency can be improved.

The invention relates to water temperature monitoring method of crucible of blast furnace, in particular relates to a control method of water temperature difference alarm of crucible of blast furnace. Technical problems that fixed alarming points causes measurement lag are solved. The technical solution of the invention is: a control method of water temperature difference alarm of crucible of blast furnace comprises the step of regular alarming step after data collection, that is, alarming when the water temperature difference is 1.2 deg. C and heat current intensity is 10000kcal/m.sq./h, further characterized in that comprising the step of grads alarm, composed of a first level alarming step and a second level alarming step; the first level alarming step is: alarming when the water temperature difference ascends 0.4 deg. C in hour hours and heat current intensity is 4000kcal/m.sq./h; the second level alarming step is: alarming when the water temperature difference ascends 0.6 deg. C in hour hours and heat current intensity is 4000kcal/m.sq./h. The invention is mainly applied to monitoring erosion of furnace body.