36results about How to "Safe and Stable Combustion" patented technology

The present invention relates to a burner, substantially comprising a swirl generator for a combustion air stream and means for introducing fuel into the combustion air stream, the swirl generator having combustion-air inlet openings for the combustion air stream that enters the burner, and the means for introducing fuel into the combustion air stream comprising one or more first fuel feeds having a group of first fuel outlet openings, arranged distributed around the burner axis at a combustion chamber-side end of the burner. The burner is distinguished by the fact that the one or more first fuel feeds having the group of first fuel outlet openings are mechanically decoupled from the swirl generator. The present burner allows reliable and safe use of synthesis gas in both dilute and undiluted form as fuel.

The invention provides a high-adjustment-ratio water-cooling premixed combustion high-strength heat exchange gas condensation boiler. The high-adjustment-ratio water-cooling premixed combustion high-strength heat exchange gas condensation boiler comprises a combustor and a heat exchanger, wherein the full-premixed combustor mounted in the center of a boiler top plate consists of a booster fan, a premixing chamber and a water-cooling combustion head; a flame stabilizing pipe and an anti-tempering column of the water-cooling combustion head can realize high-adjustment-ratio water-cooling premixed combustion; the heat exchanger consists of a lap of water-cooling wall and one or more laps of fins uniformly arranged in the peripheral direction by bent edge folding fin pipes; an air blower feedsair into the premixing chamber for fully mixing with gas to enter an inner cavity of a hole plate of the combustion head; the air flows out from a fire hole, and is sprayed out from narrow gaps amongthe water-cooling pipes distributed in the peripheral direction; after the air flows out from the flame stabilizing pipe, the air is ignited to uniformly combust in the peripheral direction and the axial direction, and radiates and releases heat to an inner pipe ring; smoke flushes base pipes and fins of inner and outer ring fin pipes in sequence to reinforce heat exchange; and the smoke downwards flows into a dew bearing disc through gaps between a housing and an outer layer fin pipe, and is exhausted into atmosphere from a smoke outlet. The high-adjustment-ratio water-cooling premixed combustion high-strength heat exchange gas condensation boiler is high in combustion load adjustment ratio, compact in heat exchange, low in nitrogen emission and high in heat efficiency.

The invention relates to a temperature control low-nitrogen and energy-saving combustion device capable of achieving flue gas recirculation and staged premixed combustion. The combustion device can effectively complete airflow straight flow or rotational flow staged premixing and combustion, the combustion temperature is lowered, the content of nitrogen oxide can be effectively controlled, gas consumption is reduced, and energy saving is realized. A mixed combustion space is arranged in the opening end of a combustion chamber. The closed end of the mixed combustion space is connected with a staged combustor. A recirculation flue gas inlet pipe is arranged on the outer circle of a recirculation flue gas distribution loop in the closed end of the combustion chamber. Recirculation flue gas bleeding pipes are arranged between the recirculation flue gas distribution loop and the mixed combustion space. Supporting spinning disks are arranged in each loop of the staged combustor. An airflow adjusting blunt body is arranged at the opening of the inner end of the staged combustor. Primary and secondary air inlet pipes are arranged on the side wall of the staged combustor. An aided mixing flow equalizing plate is arranged in a primary air pre-mixing chamber in the opening of the inner end of the staged combustor. The temperature control low-nitrogen and energy-saving combustion device is more obvious in energy-saving effect, the combustion temperature and nitrogen oxide production are effectively controlled, and pollution to the atmospheric environment is reduced.

The invention discloses an automatic control method for the air-fuel ratio of a hot-blast stove. The method includes the following steps that S1, in the ignition stage, after a control system of the hot-blast stove receives a combustion signal, air and fuel gas are input into the hot-blast stove according to the optimal air-fuel ratio; S2, after a signal indicating that ignition of the hot-blast stove is completed is received, an air-fuel ratio dual-PID controller is started, dual PID includes remaining oxygen PID and arch crown temperature PID, and maximum values of the two PID control results are output; and S3, after a banking signal of the hot-blast stove is received, the control system of the hot-blast stove stops working. By means of the automatic control method for the air-fuel ratio of the hot-blast stove, the optimal air-fuel ratio can be output all the time, and it is guaranteed that coal gas is efficiently and fully combusted; the arch crown temperature is controlled to be stabilized at the a target arch crown temperature, and it is guaranteed that the combustion process is safe and stable; and automatic and stable switch for different requirements of the air-fuel ratio in various stages can be achieved.

The invention discloses a heating furnace control and combustion optimization method. The problem that a heating furnace system is not easy to control is solved. A control strategy combining an advanced control algorithm and a conventional control algorithm is adopted, and continuous stable operation of the heating furnace system is ensured. O2 and CO switching control is used, and low-oxygen combustion is achieved. A national standard simplified formula serves as an optimized target. Real-time optimization of the oxygen content in flue gas is achieved through a self-optimization algorithm, and the aim of economical combustion is achieved.

The invention discloses a novel heat energy circulation Chinese frying furnace device. The device comprises a burner, a hearth, a hearth shell and a frying pan bracket; the burner comprises a combustion plate, a burner bracket and a gas mixing cavity; the bottom of the hearth shell is connected with a waste gas pipe; a heat return water tank is connected through a waste gas pipe; and a waste gas flue is arranged on the heat return water tank. The hearth, the burner and the whole frying furnace system are improved, so that the heat conversion rate of the frying furnace is increased, the oxygen supply in a combustion chamber is guaranteed, and the waste gas discharge pollution problem is solved; and meanwhile, high-temperature waste gas is reused to the greatest extent to effectively prevent such problems as diffusion of the temperature in the hearth.

The invention belongs to the technical field of a gas calorific value instrument, and particularly relates to a burner for the gas calorific value instrument, which comprises a gas inlet, a gas pipe, a high-pressure ignition electrode, the burner, an air pipe body and an air inlet, wherein the gas inlet is connected with a burner base provided with a gas channel; the gas pipe, the high-pressure ignition electrode and the bottom end of the air pipe body are connected with the burner base; the high-pressure ignition electrode and the gas pipe are arranged in the air pipe boy; the gas inlet is communicated with the gas pipe by the gas channel; a nozzle head is communicated with the gas pipe; a circular air mixing board is provided with a thread through hole, symmetrical through holes, a group of circular combustion-supporting air through holes and a group of long-strip combustion-supporting air through holes; and the burner consists of the circular air mixing board, the nozzle head and an injection pipe. The burner for the gas calorific value instrument is simple in structure, capable of guaranteeing the combustible gas to be rapidly mixed and gas with low calorific value to be easily ignited, and safe and stable in the combustion process.

The invention relates to a fuel gas reformer and a method, belongs to the field of novel energy, and in particular relates to a fuel gas reformer and a fuel gas preparation method. According to the fuel gas reformer and the fuel gas preparation method, oxygen, hydrogen and water generated from electrolysis form molecular groups in a molecular bonding manner through water intramolecular hydrogen bond resonance, and a fuel gas of a high heat value is prepared by reforming the molecular groups by using a package reforming liquid. The fuel gas of the high heat value, which is prepared by using the fuel gas reformer and the fuel gas preparation method, is good in security, easy to store, high in heat value and free of environment pollution.

The invention discloses a flame detection method and device for combustion of a generator set boiler. A feeding device provides combustion raw materials for the boiler. The flame detection method comprises the steps that feeding device running signals relevant to running of the feeding device and generator set loads are received; flame detection parameters are set according to the feeding device running signals and the generator set loads so as to ensure that effective flame detection signals are provided. Through the method, flame detection reliability can be guaranteed, and then safe and stable combustion of fuel in a hearth of the boiler is ensured.

An apparatus is used to stir and mix water with oil and simultaneously form small water-in-oil molecular clusters in the process of producing emulsion fuel. The apparatus includes a stirring tank and a stirring device located in the tank. The stirring device includes a rotary shaft and at least two axially extended blades connected to the rotary shaft. The blades respectively have a plurality of evenly distributed perforations formed thereon. When the blades rotate, the water and oil in the tank are continuously cut due to the perforations to thereby become evenly mixed with each other. Tourmaline stones or other power stones, collectively referred to as the tourmaline stones herein, are positioned in the stirring tank to electrolyze the water and form small water molecular clusters. The tourmaline stones also cause the water to contain rich amount of anionic surfactants, which emulsify the oil-water fuel to thereby form emulsion fuel.

The invention discloses a coal feeding system for a coal pulverizing system of a thermal power plant. The coal feeding system comprises a raw coal bunker, a coal falling pipe is connected to the outlet end of the raw coal bunker, a coal feeding gate capable of reciprocating at any opening degree is slidably arranged at the outlet end of the coal falling pipe, a first vertical partition plate used for partitioning the coal bunker is arranged in the raw coal bunker, a vertical second partition plate used for separating coal pipes is arranged in the coal falling pipe, and the first partition plate and the second partition plate are located on the same plane. According to the coal feeding system, the coal quality of coal as fired can be selected autonomously and flexibly, the problem that an existing coal pulverizing system can only use a single coal type blended according to a coal yard is eliminated, stable and safe boiler combustion in the existing and recent power development stage is guaranteed, the capacity of the thermal power plant for rapidly responding to power grid load increasing and decreasing is greatly guaranteed, and a reliable guarantee is provided for the safety of a power system.

The invention relates to a reforming liquid and a reforming and preparation method, belongs to the field of new energy and specifically relates to a fuel gas reforming liquid and a fuel gas reforming and preparation method. According to the method, hydrogen, oxygen and water generated from electrolysis form molecular groups through molecular bonding under the effect of water intramolecular hydrogen bond resonance. The reforming liquid provided by the invention is utilized to reform the molecular groups, so as to obtain the fuel gas with high calorific value. The fuel gas with high calorific value prepared according to the invention has the advantages of high safety, easiness in storage, high calorific value and no environmental pollution.

The application discloses an air distribution system capable of realizing the stable combustion of hydrogen. The air distribution system comprises a hydrogen inlet device, a combustion-supporting gasinlet device, an air mixed control device and a combustion device, wherein the hydrogen inlet device and the combustion-supporting gas inlet device are separately connected with the combustion deviceand the air mixed control device; the combustion-supporting gas inlet device comprises an air inlet sub-device and an oxygen inlet sub-device; the air inlet sub-device comprises an air inlet plate anda supercharger connected with each other; the oxygen inlet sub-device comprises an oxygen storing tank and a second pressure reducing valve connected with each other; the supercharger and the secondpressure reducing valve are separately connected with the combustion device through a second pipeline; a mixing bottle is arranged at one end of the second pipeline; and a second barometric instrumentis arranged between the second pressure reducing valve and the mixing bottle. The air mixed control device controls the combustion-supporting gas inlet device to provide enough oxygen for the safetycombustion of hydrogen through the pressure of the hydrogen in the hydrogen inlet device, and transmits the mixed gas to the combustion device, so that the hydrogen combusts stably in the combustion device.

The invention discloses a vacuum tail gas safe combustion device for biodiesel raw material vacuum distillation. The vacuum tail gas safe combustion device comprises a coal ball furnace with a tail gas combustion chamber, an explosion-proof temperature detection sensor PT100 thermal resistor, a flame arrester, a pipeline and a valve. A vacuum tail gas access pipe is divided into three paths after being connected with a ball valve, one path is connected with a condensate discharge ball valve and a discharged liquid collecting pipe, the other path is connected with a left ball valve, an anti-detonation pipeline flame arrester and a right ball valve, and the third path is connected with a bypass ball valve and then combined with the second path; after the explosion-proof temperature detection sensor PT100 thermal resistor is mounted, a large pipe branch and a small pipe branch are divided, the large pipe branch consists of a large pipe branch anti-deflagration pipeline flame arrester and a large pipe branch ball valve, the small pipe branch consists of a small pipe branch anti-deflagration pipeline flame arrester and a small pipe branch ball valve, and the two branches are combined and then connected with a combustion chamber tail gas input pipe led into a tail gas combustion chamber; and a steam conveying pipeline is connected with an outlet pipeline of a tail gas access ball valve after being connected with a stop valve. The vacuum tail gas safe combustion device for biodiesel raw material vacuum distillation is convenient and efficient to operate, safe, stable and environmentally friendly.

The invention discloses a method for preparing coal water slurry through mixing of reverse osmosis membrane (RO) sewage and VAE emulsion waste water. The coal water slurry comprises, by mass, 0-36% of RO sewage, 0-36% of VAE emulsion waste water, 0.05-0.2% of a stabilizing agent, 0.5-1% of a dispersant and 60-68% of coal dust and the total mass parts of the RO and VAE emulsion waste water is in a range of 10-36. The method comprises adjusting pH of the RO sewage to 6-7 through hydrochloric acid, mixing the RO sewage and the VAE waste emulsion according to different ratios, adding the dispersant and coal into a mill together, carrying out milling, adding the stabilizing agent into the mixture and carrying out milling to obtain the coal water slurry.