289results about How to "Prevent deflagration" patented technology

The invention relates to a sludge drying and incineration combined treatment method with good treatment effect, wide sludge adaptability, and safe and stability system. To avoid agglomeration of mechanically dewatered sludge (k) in a fluidized bed dryer (6), a part of dried sludge (c) is premixed with the mechanically dewatered sludge (k) and then fed into the fluidized bed dryer (6). The dried sludge (c) is incinerated into a circulating fluidized bed incinerator (1) to generate superheated vapor. The superheated vapor is condensed to hot water in a heat exchange tube (6-2) of the fluidized bed dryer (6) and then recycled to the circulating fluidized bed incinerator (1). The arrangement of buried pipes (1-3) and fractional air supply inside the circulating fluidized bed incinerator (1) can effectively control the lower temperature of the circulating fluidized bed incinerator (1) to prevent deflagration of dried sludge. The entire system has no emission of pollutants such as unpleasant odor, acidic gases, heavy metals and dioxin; is safe and reliable; and can operate for a long time.

The invention discloses a circulating fluidized bed garbage incineration boiler and a pollution control system with the same, which relate to a garbage incineration boiler and a pollution control system with the same, and aim to solve the problems that the conventional circulating fluidized bed garbage incineration furnace difficultly discharges slag and is required to be stopped regularly to remove the slag and the economy of a garbage incineration plant is influenced. According to the scheme I, a circulating fluidized bed and double V-shaped wind distributing plates are arranged in a boiler body, the boiler body, a separator, a flue gas cooling chamber and a tail flue are communicated in sequence, an upper level low-temperature superheater, a lower level low-temperature superheater, a primary wind air preheater, a secondary wind air preheater, an upper level primary wind economizer, a lower level primary wind economizer, an upper level secondary wind economizer and a lower level secondary wind economizer are arranged in the tail flue, and the separator is communicated with the boiler body by a U-shaped valve; different from the scheme I, the scheme III is characterized in that: double inverted V-shaped wind distributing plates are adopted; different from the scheme III, the scheme V is characterized in that: an inverted V-shaped wind distributing plate is adopted; and according to the scheme II, the scheme IV and the scheme VI, a semidry reaction tower, a bag-type dust collector, an induced draft fan, a chimney, a fly ash cabin, a lime slurry preparation system, a rotary atomizer and an active carbon injecting device are added on the basis of the scheme I, the scheme III and the scheme V. The circulating fluidized bed garbage incineration boiler and the pollution control system with the same are used for incinerating garbage, and pollutant emission can be controlled.

The invention discloses a process for calcining petroleum coke. The calcination of the petroleum coke is carried out in a tank type calcining furnace, and the tank body of the tank type calcining furnace is provided with a preheating zone and 6-8 calcining zones sequentially from top to bottom, wherein the calcining temperature of the first calcining zone at the uppermost part is controlled in the maximum calcining temperature interval allowed by the petroleum coke; the calcining temperature of the second calcining zone in the downstream position of the first calcining zone is kept in the maximum calcining temperature interval and is not higher than the calcining temperature of the first calcining zone; starting from the third calcining zone, the calcining temperature of each calcining zone gradually reduces relative to the calcining temperature of the adjacent calcining zone in the upstream position; and in the undermost calcining zone, the calcining temperature is reduced to the discharging temperature. In the invention, when the petroleum coke is calcined, the high temperature zone is positioned at the top end of the calcining furnace, thereby relieving the high temperature deformation phenomenon of the furnace body, being more favorable for overflow of combustible gas in the petroleum coke, reducing the corrosion of the combustible gas on wall bricks, and being favorable for prolonging the service life of the tank type furnace.

The utility model discloses a control system for a commercial gas cooker. The commercial gas cooker comprises a blower for purging a hearth of the commercial gas cooker, and an igniter used for igniting. The control system for the commercial gas cooker is characterized by comprising an intense-fire solenoid valve, a weak-fire solenoid valve, a gas pressure switch, a gas leakage detector and a program controller, wherein the program controller is used for controlling all the components of the control system as well as the blower and the igniter according to the preset program and detecting the flame and all the components of the control system. The phenomenon of detonation in the closed hearth due to certain reasons is avoided; and whether the pressure of the gas source is controlled in the specified range or not and whether the gas cooker has the phenomenon of electric leakage or not are simultaneously monitored, so that the safety in use of the gas cooker is enhanced, the gas cooker is convenient to maintain, and when the system is abnormal, the gas source is cut off during the warning process, and meanwhile, the fault part is displayed.

The invention relates to a fluidized bed catalytic deoxidation method for oxygen-containing coal bed gas. The fluidized bed catalytic deoxidation method comprises the following steps that: a fluidized bed deoxidation reactor is preheated to the temperature of 300-400 DEG C; the oxygen-containing coal bed gas is fed into the fluidized bed deoxidation reactor; deoxidation catalyst granules are loaded into a feed hopper and are added into the fluidized bed deoxidation reactor under the action of air blowing and supplying; methane and oxygen in the coal bed gas are subjected to low-temperature catalytic combustion reaction in the fluidized bed deoxidation reactor; the gas moves upwards with the carrying of part of solid catalyst granules and enters a one-stage cyclone separator and a two-stage cyclone separator from the top outlet of the fluidized bed deoxidation reactor, and the collected solid catalyst granules circularly enter the fluidized bed deoxidation reactor under the control of a feed back control valve and air blowing and supplying; and the deoxidated coal bed gas which is subjected to coarse dust removal by the cyclone separators is subjected to fine catalyst dust removal by a high-temperature filter, and then, is transferred to a follow-up system for use. The fluidized bed catalytic deoxidation method for the oxygen-containing coal bed gas has the advantages of good safety, low energy consumption, high deoxidation efficiency, long service life of catalyst and large processing capacity.

The invention discloses an oxygen-enriched combustion system. The oxygen-enriched combustion system comprises a boiler body, a cyclone combustor, a primary air circulating system, a secondary air circulating system and an oxygen supply system, wherein the boiler body comprises a smoke exhausting pipeline; the cyclone combustor comprises a primary air channel and a secondary air channel and is arranged on the boiler body; a ring-shaped oxygen chamber is arranged at a primary air channel outlet, and is communicated with a hearth of the boiler body by oxygen spraying pipes which are uniformly distributed; the primary air circulating system is connected with the smoke exhausting pipeline and the primary air channel of the cyclone combustor; the secondary air circulating system is connected with the smoke exhausting pipeline and the secondary air channel of the cyclone combustor; and the oxygen supply system is connected with the primary air channel and the secondary air channel and oxygen is input into the oxygen supply system. The oxygen-enriched combustion system has the advantages that the temperature of primary air of an outlet of a coal mill is improved, and the highest temperature is up to about 200 DEG C; the pure oxygen can be injected into the hearth quickly, so that the coal powder is sprayed into the boiler to be ignited and combusted quickly; the combustion efficiency is greatly improved; and the concentration of CO2 in smoke exhausted by the boiler is up to more than 80%, and the capture of CO2 is conveniently realized.

The invention relates to a motor spark plug asynchronous igniter, which is formed by a magnetic motor rotor, a flywheel boss, an electromagnetic sensor, an electric igniter, a high-pressure boss and a spark plug. Wherein, the electric igniter receives the signal of electromagnetic sensor and sends ignition signal to the high-pressure boss to control the ignition of spark plug. The invention is characterized in that: there are morn than one high-pressure bosses, which are connected to the different outputs of electric igniter; the input of electric igniter is connected to the electromagnetic sensor to judge the speed of magnetic motor and set the ignition time sequence to send the low-frequency ignition signal or high-frequency ignition signal to several high-pressure bosses to control several spark plugs ignite synchronously or asynchronously. The invention has better anti-disturb ability and reliability.

The present invention discloses explosion protection gas burning water heater. It contains main controller, lighter, blower fan and main solenoid valve, wherein said main solenoid valve located gas burning gateway for controlling gas burning gateway switch and connected to main controller, acting according to main controller instruction; said water heater also including: ratio regulation solenoid valve for regulating valve port opening to control gas burning gateway air inflow and having scheduled valve port opening in ignition; gas burning dispenser having at least two air inlet zone; solenoid valve with at least two section connected to main controller, and according to main controller instruction to act for controlling gas-fired inlet position.

The invention discloses a coal mill outlet temperature control method and system based on flue gas inerting. Starting from the mechanism of detonation of a coal pulverizing system, the oxygen contentof the coal pulverizing system is reduced through the tail smoke of a boiler, the coal pulverizing system is inerting, and the anti-explosion capacity is improved. The concentration of combustible gasCO separated out through pyrolysis in the coal mill outlet pulverized coal heating process and the coal mill outlet air speed are monitored, a strategy is provided for adjusting the oxygen content, the air temperature and the air volume of inert media of the coal pulverizing system, and the temperature level of a coal mill outlet in an actual running process is determined. Compared with a traditional coal pulverizing system and method that the coal mill outlet temperature is determined according to an empirical formula, and a large amount of cold air needs to be doped, the remarkable coal type adaptation advantage and the safety guarantee advantage are achieved, the comprehensive output of the coal pulverizing system can be effectively improved, the coal pulverizing power consumption is reduced, and the boiler efficiency is improved.

The invention discloses a completely-premixed intelligent cooking utensil, which comprises a combined metal-sheet spraying cooking range, an integral metal hearth and a burning intelligent controller; the cooking range comprises an outer shell, an air inlet pipe, an inner cavity tube and a metal sheet group which is formed by superimposing at least two metal sheets, wherein the upper part of the air inlet pipe is connected with a turbine air mixing plate, the inner wall of the inner cavity tube forms an inner mixing cavity with a base and the turbine air mixing plate, and the outer wall of the inner cavity tube forms an outer mixing cavity with the outer shell and the metal sheet group. The intelligent burning controller comprises a box body, a controller which is arranged inside the box body, an ignition device which is arranged inside the box body, an ignition needle which is connected with the ignition device and a flame sensing needle which is used for detecting whether the ignition needle is fired or not; an electromagnetic proportional valve is arranged inside the box body, and a gas inlet of the electromagnetic proportional valve is connected with an external gas outlet; an air mixer is connected with an outlet of the electromagnetic proportional valve; an air inlet of the air mixer is connected with a direct-current brushless fan which is arranged inside the box body; and an outlet of the air mixer is connected with the lower part of the air inlet pipe.

The invention discloses a system and method for utilizing flue gas circulation to prevent deflagration of a hearth bottom. A CO concentration online monitoring point is arranged at the bottom of a cold ash hopper area to monitor CO concentration signals of the area on line, opening of explosion suppression air regulating valves is controlled after analysis is performed through a CO concentration online monitoring system connected with the CO concentration online monitoring point, flue gas passing through a coal economizer is sent to the boiler cold ash hopper area through the explosion suppression air regulating valves in a vertically staggered hedging mode, good explosion suppression characteristics of high-concentration CO2, N2 and vapor in the flue gas are utilized to reduce a deflagration concentration interval of the reducing combustible gas CO in the area and deflagration strength which may occur, and the goal of preventing, weakening and eliminating deflagration is achieved. The system is of great significance for safe operation of a large power station boiler under the conditions of coal quality fluctuation.

A low-load stable-combustion direct-current combustor comprises a natural gas pipeline. The natural gas pipeline extends to a central air duct to supply natural gas, a cyclone arranged at the outlet of the central air duct conveys mixed gas to a precombustion chamber for combustion, a primary air pipe providing primary pulverized coal to the precombustion chamber is arranged outside the central air duct, an internal secondary blowdryer providing internal secondary air to the precombustion chamber is arranged outside the primary air pipe, an external secondary blowdryer providing external secondary air to the precombustion chamber is arranged outside the internal secondary blowdryer, the precombustion chamber is divided into an expansion section and a horizontal section along the inlet direction of the mixed gas, an internal-secondary-air annular nozzle is arranged in the intersection of the expansion section and the horizontal section, the internal secondary air is in annular direct-current incidence from the internal-secondary-air annular nozzle, combustion supporting function is achieved, slag build-up and pulverized-coal accumulation can be avoided; the external secondary air is injected in a direct-current oblique manner to supplement air needed for subsequent combustion of pulverized coal flow, and meanwhile, formation of NOx is reduced. By the arrangement, low-load stable combustion of a pulverized-coal combustor can be realized, and deep participation in peak regulating of a coal-fired power plant is favorably improved.

The invention provides a method for improving the rated stable operation power of uniformity solution nuclear reactor, which is characterized in that a flat reactor core with the ratio of height and the diameter less than 0.5 is adopted to enlarge the surface area of reactor core fuel solution, to reduce the vacuolar coefficient of fuel solution, to control the surface releasing ratio of radiantly decomposed gas: hydrogen and oxygen and to control the reactor core specific power; ruthenium iron ions are added in reactor fuel solution and a device which converts nitrogen generated by the radiation and decomposition of HNO3 into HNO3 and an automatic continuous HNO3 supplementation system are additionally added, so as to enlarge the surface area of a heat exchanger, the gas circuit flux of nuclear reactor and hydrogen and oxygen composition capability of a hydrogen and oxygen compositor in the gas circuit, and to control the hydrogen consistency in the gas circuit. The method of the invention can ensure that the rated stable operation power of the uniformity solution nuclear reactor is higher than 200kW.

The invention relates to an energy saving fuel oil hot air oven, characterized in that it mainly comprises combustion chamber, heating room and fan; the heating room is an air heating channel, on which there are air inlet and air outlet; the fan is located on the flowing path in the heating room so as to make air flow from the air inlet to the air outlet; the combustion chamber is set in the heating room and there is an air flow space between the periphery of combustion chamber and the wall of heating room; the combustion chamber is a cylinder combustion room; one end is igniting end connected with adding fuel burner and the other end is closed as fireproof plate and reversal combustion end; a group of heat dissipation holes are set on the peripheral wall of cylinder at the igniting end evenly and a group of noise damping holes are set on the peripheral wall at the fireproof plate and reversal combustion end evenly; the hole diameter of said heat dissipation hole is larger than the one of noise damping hole. The invention makes flame burn secondly in the combustion chamber and burning is sufficient. Heat quantity after burning can be discharged directly to firing or drying so that it is more energy saving and heat efficiency can achieve 95% or so. It is provided with simple whole structure and convention manufacture.

The invention discloses a regionalization and leveling lean combustion engine control method. According to the method, an air inlet conversion valve I, an air inlet conversion valve II, an oil sprayer I and an oil sprayer II are connected on an electronic control unit respectively. A combustion chamber is divided into a small combustion region and a large combustion region. A cylinder air inlet tube is connected onto the large combustion region and the small combustion region respectively, a cylinder air inlet tube channel dividing plate is arranged in each cylinder air inlet tube, and each cylinder air inlet tube is divided into a large air inlet channel and a small air inlet channel. By the aid of the method, the engine regionalization and leveling combustion is achieved, the engine inner combustion oil combustion efficiency is improved, exhaust waste and oil consumption of the engine are reduced, the engine can be used safely during large loads, and accordingly, the environment-friendly performance of automobiles during traveling is improved, and the usage cost is reduced.

The invention discloses an aluminum profile machining device. The aluminum profile machining device is characterized in that an arc-shaped conveying table is welded to the top end of a fixed supporting frame, roller mounting grooves are formed in the top end of the arc-shaped conveying table, moving rollers are installed on the inner side of the roller mounting grooves, and the moving rollers are connected to transmission gears through rolling rods; an aluminum ingot cutting knife set is fixedly installed at the bottom end of a lifting hydraulic cylinder, a heating box is embedded into the top end of a fixed supporting plate, a two-way lead screw penetrates through one end of the heating box, a rotating groove is formed in the inner side of the heating box, and rotating wheels are installed on the inner side of the rotating groove; an aluminum ingot is driven to move into the heating box through the moving rollers, an external mechanical arm is not needed, and the aluminum ingot can be directly conveyed to move, so that the cut aluminum ingots are conveniently and rapidly conveyed into the heating box; and the situation that thermal stress cracks occur to the aluminum ingots due to the fact that part of the aluminum ingots are heated unevenly when the aluminum ingots are heated is avoided through circulating heat supply, and the situation that the aluminum ingots influence follow-up manufacturing is avoided.

The invention discloses engine ignition control and fuel injection control methods based on engine cycles. The engine ignition control method comprises the steps of a, judging the operation condition of an engine; and b, and independently controlling the ignition angle of advance and fuel injection quantity of the engine in each working cycle under the condition. According to the engine ignition control and fuel injection control methods, control for ignition and fuel injection of the engine is refined in each working cycle of the engine, control parameters (ignition time, fuel injection pulse width and fuel injection phase position) of all the working cycles of the engine are more accurate, the accuracy of the control parameters under the transition working condition is guaranteed, and finally, the dynamic property, economy and emission level of the engine are improved to the greatest extent.