30results about How to "Reduce surplus factor" patented technology

The invention discloses a low-nitrogen burner. According to the technical scheme, the low-nitrogen burner is characterized in that a mixer of the low-nitrogen burner comprises a barrel and a gas inlet, wherein an inner barrel and burning-supporting air swirling pieces arranged on the inner wall of the inner barrel are arranged at the gas inlet front end inside the barrel; an air inlet barrel located on the back side of the burning-supporting air swirling pieces in the air inlet direction is arranged at one end, close to the gas inlet back side, of the inner barrel; the air inlet barrel, the inner barrel and the inner wall of the barrel are connected in a sealed manner to form a gas sub-cavity; inclined flow guiding holes are formed in the air inlet barrel; a primary swirling impeller is arranged in the position, located on the air inlet back side of the inner barrel, inside the barrel; and the primary swirling impeller and the air inlet barrel form a primary mixing chamber. Through the arrangement, gas is ejected via the gas sub-cavity from the inclined flow guiding holes, the ejected gas can form multiple single, short and powerful gas flows, air flows sent by a fan pass through the burning-supporting air swirling pieces to form short and powerful rotating air flows, and the rotating air flows are circular and impact the multiple single gas flows, so that the air and the gas of the primary mixed gas reach the air-fuel ratio in the complete burning theory.

The invention relates to a method for smelting magnesium by decomposition in vacuum through microwaves, and belongs to the field of magnesium smelting. The method comprises the following steps: firstly, crushing raw materials of magnesia, lime and ferrosilicon, then evenly mixing the crushed materials according to the proportions, pressing into balls, carrying out microwave-heating in a microwavevacuum reactor to resolve the magnesia into gaseous magnesium, and condensing to obtain crude magnesium. The invention is characterized in that the technical parameters are as follows: the reaction temperature in the microwave vacuum reactor is 1250-1450 DEG C, and the vacuum degree is 20-1000 Pa; the proportion of the lime to the magnesia is 0.5:1-1.5:1, and the proportion of ferrosilicon to themagnesia is 0.44-0.65:1; and the heating time is 1-5 hours. Compared with the prior Pidgeon process for smelting magnesium, the invention has the characteristics of high efficiency, low energy consumption, low pollution, low production cost, low fixed investment and the like.

The invention discloses an axial rotational flow stepless regulation low-nitrogen combustor in the field of combustors. The combustor comprises an oil gun, a center air pipe, a gas pipe, a coal air pipe and an axial flow air pipe which are arranged from inside to outside in a sleeved manner; a gas channel is formed between the gas pipe and the center air pipe, a rotational flow air adjusting mechanism is arranged in the gas channel and comprises a plurality of rotational flow air adjusting fan plates evenly arranged on the periphery of the center air pipe, the rotational flow air adjusting fan plates are mounted on the periphery of the center air pipe through positioning screws, and can swing around the positioning screws, the tails of the rotational flow air adjusting fan plates are connected to a rotational flow air adjusting ring through flexible shafts, the rotational flow air adjusting ring is rotatably arranged on the periphery of the center air pipe in a sleeving manner, and the tail of the rotational flow air adjusting ring is connected with a first adjusting rod used for controlling the rotational flow air adjusting ring to rotate. The rotational flow air outlet air speed adjusting and blade angular stepless adjusting are achieved, the combustor meets the requirements of different stations for the rotational flow strength and the rotational flow angle of the combustor, and the combustor can be used for work of combustion of various kinds of industrial furnaces.

The invention discloses an industrial calcination shaft kiln. According to the industrial calcination shaft kiln, gas, liquid or power are taken as fuel, the calcination temperature is more even, theproduct quality is better, energy conservation and environmental protection are achieved, the automation degree is high, and massive or granular or ball-shaped materials can be calcined. The industrial calcination shaft kiln comprises a cylinder body, a material adding device used for adding materials to the interior of the cylinder body and an exhaust device used for exhausting tail gas are arranged on the upper portion of the cylinder body; a combustion-supporting wind device used for sending combustion-supporting wind to the interior of the cylinder body and an unloading device used for discharging the material in the cylinder body are arranged on the lower portion of the cylinder body, at least a sudden-changed section is arranged at the position, between the material adding device andthe combustion-supporting wind device, of the cylinder body, the size of the part, on the upper portion of the sudden-changed section, of an inner cavity of the cylinder body is small in the horizontal direction, the size of the part, on the lower portion of the sudden-changed section, of the inner cavity of the cylinder body is large in the horizontal direction, and when the materials flow downwards in the cylinder body, a cavity which the materials cannot reach naturally is formed on the lower portion of the sudden-changed section; and an outlet of a combustion nozzle in a fuel combustion device communicates with the cavity, and materials are sprayed out from the combustion nozzle.

The invention discloses an anaerobic pyrolysis treatment system for garbage. The Anaerobic pyrolysis treatment system comprises a pyrolysis device, a solid thermal carrier furnace, a purification device and an intermediate bunker, wherein a pretreatment unit comprises a separation unit, a crushing unit and a drying unit; the separation unit, the crushing unit and the drying unit are sequentially connected in series; the drying unit is connected with the pyrolysis device; the pyrolysis is connected with the purification device and the intermediate bunker respectively; the solid thermal carrier furnace comprises a hearth, a gas-solid separation device, a waste heat recycling unit and a return feeder; the waste heat recycling unit comprises an air preheater, an economizer and an over heater; the purification device is connected with the hearth of a combustion unit through two pipelines; the intermediate bunker is connected with the return feeder of the solid thermal carrier furnace; in the solid thermal carrier furnace, the return feeder is connected with the hearth; the hearth is connected with the gas-solid separation device; the gas-solid separation device is connected with the pyrolysis device and the waste heat recycling unit respectively; the waste heat recycling unit comprises the over heater, the economizer and the air preheater.

The invention discloses a working method and a device of a pre-mixing type secondary combustor. The invention aims at providing a working method and a device of a pre-mixing type secondary combustor capable of effectively saving the energy source. The method disclosed by the invention comprises the steps of: firstly, dividing the combustion air into two parts through a tee shunt, and respectively controlling the flow rates through valves; and then, conveying the combustion air (primary air) into a pre-mixer through a pipeline to be fully mixed with fuel gas to reduce the air coefficient of excess; conveying the pre-mixed mixed gas into a pre-mixing pipe through a pre-mixing connecting pipe and outputting the mixed gas through an output hole on a combustion nozzle; and finally, introducing the other part of the combustion air (secondary air) into a main body shell through a conveying pipe, conveying the combustion air to the combustion nozzle through a secondary air flow duct to be fully mixed with the mixed gas and to cool the combustion nozzle. The method disclosed by the invention is mainly applied to ceramic kiln combustors, nonferrous metal smelting furnaces, holding furnaces and industrial boilers.

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 relates to a 50,000 ton/year natural gas hard carbon black reaction furnace, one end of an air guide cylinder is connected with a panel of the reaction furnace, the other end of the airguide cylinder is connected with a combustion section, a ventilation opening is reserved on the joint of the air guide cylinder and the combustion section to form bypass air, a preheated air intake tube I is arranged on the middle section of an air distributor, and the preheated air of the preheated air intake tube I respectively forms a ventilation air path with the air guide cylinder and the ventilation opening respectively. The 50,000 ton/year natural gas hard carbon black reaction furnace has the technical effects that: the air distributor is designed and improved and is butted with a combustion straight section to form the bypass air, the inner wall of a hearth is protected, the air temperature and the furnace temperature are improved on the premise that the reaction furnace is effectively protected, two tangential air inlets are arranged at the end part of the air guide cylinder, the rotational flow is formed in the air guide cylinder, the turbulence degree of the preheated air is increased, so that the combustion is promoted, the reaction temperature of raw oil is increased, meanwhile, the coefficient of excess air is further reduced, the content of excess oxygen in the smoke produced in the combustion is reduced, and the consumption of the raw oil is reduced.

The invention discloses a catalyst capable of promoting burning of a mixture of sludge and pulverized coal. The catalyst is characterized in that the mixture of the sludge and the pulverized coal and methylcyclopentadienyl manganese tricarbonyl and N,N-dimethylformamide are mixed for burning, thereby being capable of improving the burning efficiency of the sludge and pulverized coal mixture and reducing the firing temperature and the burnout temperature. In the catalyst, the sludge includes water supply sludge, domestic sewage sludge and industrial wastewater sludge, and the pulverized coal comprises lignite, bituminous coal and kikenny coal; and when the mass fraction of the sludge is 15-25% and the mass fraction of the pulverized coal is 75-85% in the mixture of the sludge and the pulverized coal, the catalytic effect is the best. The method and the product are hopefully applied to various large and small burning furnaces.

The invention relates to the technical field of hazardous waste incineration, and particularly discloses a hazardous waste incineration rotary kiln air supply structure which comprises a supporting frame, a rotary drum and a kiln head cover. The rotary drum is rotationally connected to the supporting frame, the kiln head cover is fixed to the supporting frame, the rotary drum is rotationally connected with the kiln head cover in a sealed manner, the kiln head cover is cylindrical, and a main air hole and an auxiliary air hole are formed in the side wall of the kiln head cover; and the main airhole is located in the top of the kiln head cover, the main air hole and the auxiliary air hole are not located in the same circumferential line of the kiln head cover, the main air hole is close tothe rotary drum, and the auxiliary air hole is formed in the side far away from the rotary drum. According to the air supply structure, through model simulation, the air excess coefficient of hazardous waste incineration is controlled to range from 0.8 to 1.0 to adjust the air supply amount, a rotary turbulence flow field of the scheme is obtained through calculation, the hazardous waste incineration heat ignition loss rate of a rotary kiln can be lower than 3%, and it can be seen through the scheme that on the premise that the low excess coefficient is guaranteed, the lower ignition loss ratecan also be ensured, and the combustion rate is improved.

The invention discloses a combustor for a horseshoe flame glass kiln, the glass kiln and a combustion method. The combustor comprises a combustor body, wherein the combustor body comprises a gas outercavity and a gas inner cavity sleeved with the gas outer cavity, the tail of the gas outer cavity and the tail of the gas inner cavity are both sealed, the head of the gas outer cavity and the head of the gas inner cavity are both open, a gas main inlet is formed in the tail of the gas outer cavity, and an inner cavity gas inlet communicated with the gas outer cavity is formed in the gas inner cavity; the combustor further comprises an adjusting assembly used for adjusting the section opening rate of the gas outer cavity. According to the combustor for the horseshoe flame glass kiln, a stageddouble-flame combustion mode combining long flame and short flame is achieved, the reaction speed of fuel gas and combustion-supporting air is decreased, the severe combustion degree of the fuel gasis decreased, and the local high temperature of a flame space is avoided. Meanwhile, excess air is reduced, the excess air coefficient is reduced, and the purpose of reducing generation of nitric oxide is achieved.