39 results about "Thermal ignition" patented technology

In order to provide an ignition control device 30 which can efficiently control timing of thermal ignition of gaseous mixture in a combustion region 10, the peak estimation part 32, the ignition timing determination part 33, the control timing determination part 34, and the plasma control part 35 control timing of thermal ignition of the gaseous mixture in the combustion region 10 by controlling the pulse generator 36, the electromagnetic wave oscillator 37, the mixer circuit 38, and the spark plug 15 so as to increase the amount of OH radicals in the combustion region 10 during a low-temperature oxidation preparation period that occurs prior to a peak of a heat release rate before the thermal ignition of the gaseous mixture.

The invention provides a preheating ignition method and device for an electric melting furnace. The preheating ignition method and device are used for producing rock wool by using red mud. A large-power nickel-chromium resistance wire is additionally introduced to a point discharge point of a three-phase graphite electrode for preheating and serving as an ignition device to dry the interior of a novel electric melting furnace, preheat furnace materials and realize stable transition after electric arc ignition through the three-phase electrode. The electric melting furnace is high in electric arc ignition speed, steady one-time arc ignition can be achieved, the three-phase current is balanced, and automatic or manual control can be realized. The voltage and the current do not fluctuate severely. Unstable electric arc burning does not exist. Short circuit and arc breaking are avoided. The preheating ignition method and device have no impact on a power grid and are free of harmonic pollution in the implementation process.

The invention relates to a boiler ignition method, in particular to a thermal material ignition method of a coal-fired fluidized bed boiler. The fluidized bed hot material ignition mode of the present invention is realized by the following technical solutions. The hot material ignition of the present invention is to take out the inert hot bed material that is nearly burned out in the running boiler, put it into the pre-start fluidized bed boiler, and use it as the ignition source. The combustion is carried out from point to surface until the whole bed is stably combusted. The process of the method for igniting the hot material of the circulating fluidized boiler of the present invention is as follows: laying the base material→taking and feeding the heat material→air distribution, coal feeding→fluidized combustion→air distribution, coal feeding→extended combustion→full bed stable combustion. The advantages of the invention are: the ignition cost of the invention is greatly reduced; the ignition and combustion process is from point to surface, the ignition is easy and the combustion is stable; the operation is simple, convenient and intuitive; the controllability is strong; the safety and reliability are high, and the ignition success rate is high; Transformation promotion. The invention is suitable for various coal-fired fluidized bed boilers.

The invention discloses an indirect ignition preheating system. The interior of the gas supply main pipe is used to transport combustible gas, and the flame injectors for spraying gas are arranged at intervals on the gas supply main pipe. After the flame injector is ignited, the flame sprayed is used to The corresponding structure is preheated; the ignition auxiliary pipe is made of a conductive pipe with a diameter smaller than the main gas supply pipe, which can transmit electric sparks and is used to transport combustible gas inside; the ignition section of the ignition auxiliary pipe is arranged side by side with the flame injector, and The corresponding flame injector on the combustion section is provided with an ignition injection hole for injecting gas outward; the igniter is close to the secondary ignition pipe and can generate an electric spark, and the gas ejected from the secondary ignition pipe is ignited by the electric spark, and passed through an igniter All the injection holes on all the ignition sub-pipes are ignited, and the flame ejected from the injection holes further ignites the flamethrower, thereby indirectly igniting the flamethrower, so that multiple flamethrowers are ignited synchronously, and the ignition efficiency is improved.

The invention relates to a method for detecting glow ignition of a fuel-air mixture in a combustion chamber of an internal combustion engine (12) having at least a first and a further cylinder, which are connected by a crankshaft, according to which method partial segment times of the first cylinder are measured. The method is characterized in that partial segment times of the at least one further cylinder are measured and a reference characteristic for the glow ignition is formed by a comparison of partial segment times of the first cylinder with partial segment times of the at least one further cylinder and subsequently a signal is generated for the detection of the glow ignition on the basis of the comparison.

The invention provides a test system for the whole process of charge ignition and combustion reaction growth of heat-stimulated ammunition, which simultaneously monitors the temperature of the projectile body, charge temperature, internal pressure of the projectile body and expansion rate from the stages of preheating, ignition and combustion , to realize the simultaneous measurement of the temperature change, ignition response, internal pressure change history and shell expansion rate of the constrained projectile charge under thermal stimulation, and has good measurement accuracy, to solve the problem of charge response under thermal stimulation, combustion after ignition The research on the growth mechanism and the evaluation of the response intensity lack the problem of the whole process of multi-parameter complete and systematic quantitative data, which can promote the progress of the insensitive ammunition base and have good social and economic benefits.

The invention discloses an improved thermal ignition method of a combustion surface of a sulfur recovery device. The improved thermal ignition method comprises the following steps of: (1) stopping to blow; (2) replacing the system; (3) inspecting a hearth: inspecting whether the temperature in the hearth is above 800 DEG C after the system is replaced, if so, carrying out the following step, and if not, igniting according to the original ignition process; (4) carrying out hot start at temperature more than 800 DEG C: switching on a combustion air interlocking valve, and allowing to switch on an acidic gas interlocking valve; and (5) igniting main combustion acidic gas: switching on the combustion air interlocking valve, feeding combustion air into the combustion furnace, then switching on the acidic gas interlocking valve, an acidic gas control valve and an acidic gas furnace feeding ball valve, and feeding the acidic gas into the furnace, igniting, and finally canceling the hot start procedure under temperature more than 800 DEG C. By adopting the improved heating ignition method, the ignition efficiency can be improved, the torching of the acidic gas can be reduced, and the environmental pollution can be reduced.

The invention discloses a thermal-ignition high-energy gas pulse fracturing device. The thermal-ignition high-energy gas pulse fracturing device is formed by connecting an oil transmission or cable ignition joint component, a fire transmission joint component, one or more airtight thermal ignition device components, one or more fracturing main charge components, one or more series-connected joint components and a gun breech in series, wherein the airtight thermal ignition device components are ignited by using ignition tubes; the ignition tubes ignite high-heat micro-air gunpowder or airless high-heat explosives in the airtight thermal ignition devices; the airtight thermal ignition devices are sealed systems and keep a complete structure before and after ignition; main charges are ignited by heat transmitted from the airtight thermal ignition devices; and the main charges combust and quickly generate a great amount of fuel gas. A plurality of devices are connected in series by using ignition joints, the number of the devices connected in series is not limited, and the instant or delayed ignition tubes are filled in the ignition joints, so that the combustion transmission of multi-level devices is realized. The thermal-ignition high-energy gas pulse fracturing device solves the problems that a deflagration state is difficult to control, pressure in mineshafts is superposed and sleeves are damaged, and a great amount of debris pollutant and blockage exist after deflagration in the prior art.