30results about How to "Improve fire conditions" patented technology

A smokeless combustion device with fire stack in furnace consists of destructive distillation gasification combustion chamber, the second combustion chamber, top fire grate, bottom fire grate, fire stack in furnace, firepot, heated surface and fender. The extensive fuel materials such as raw coal, bulk coal, section coal, wood, straw and agricultural wastes can be used as fuel material of said device.

The invention provides an oxygen-enriched combustion W-shaped flame boiler system and a combustion process thereof. Flue gas discharged from a dewaterer is divided into two strands, wherein one strand of flue gas sequentially enters a desulfurization device and a CO2 recovery device and the other strand of flue gas enters a gas-gas heat exchanger and is heated by flue gas in a main flue; the flue gas in the main flue also heats O2 separated in the air when heating the recycled flue gas; the heated recycled flue gas is divided into three strands; O2 is divided into two strands; after the first strand of O2 is mixed with the first strand of recycled flue gas, the mixed gas enters a coal mill and enters a primary air pipeline; after the second strand of O2 is mixed with the second strand of recycled flue gas, the mixed gas enters a furnace arch secondary air pipeline; and the third strand of recycled flue gas enters a front and rear wall secondary air pipeline The system provided by the invention overcomes the defects in the prior art and greatly improves ignition conditions of a hearth; when the radiation and heat adsorption area of a lower hearth is effectively increased, slag-bonding possibility is greatly reduced; efficiency of the integral system is improved; steel consumption and manufacturing cost of a boiler are reduced; and zero emission of CO2 can also be realized.

This invention is a dewatering burning treatment method of household garbage. Mechanical dewatering pretreatment method is adopted to replace the heat drying pretreatment method, household garage is broken up at first then efficient deep dewatering process is carried out by high speed centrifuge after removing water by filtering, the garbage dewatered is sent into the furnace to burning, the amount of the calorific power generated is increased by burning garbage through controlling the burning temperature and residence time of flue gas, the amount of generating dioxin is reduced too. The fluw gas generated by burning will be discharged after spray damp dry acid stripping and dsting. This invention can raise the burning temperature of garbage, and reduce the cost for flue gas treatment and environment pollution.

The invention discloses a boiler provided with a dual-register pulverized coal burner on the top, belonging to the technical field of boilers, and aiming at providing a U-shaped flame boiler which is provided with the dual-register pulverized coal burner on the top and is high in combustion efficiency. According to the technical scheme, the boiler provided with the dual-register pulverized coal burner on the top comprises a boiler body and an ash falling pit, wherein the ash falling pit is formed in the bottom of the boiler body, a membrane type water-cooling wall is arranged on the inner wall of the boiler body, a first partitioning wall is arranged on the top in the boiler body and is used for partitioning the boiler body into a combustion chamber and a waste gas chamber, the lower parts of the combustion chamber and the waste gas chamber are communicated with each other to form a first pair of flue channels, the dual-register pulverized coal burner is arranged at the top of the combustion chamber, a second partitioning wall is arranged at the bottom of the waste gas chamber and is used for partitioning the waste gas chamber into a left chamber and a right chamber, the upper parts of the left chamber and the right chamber are communicated with each other, and a flue discharging channel is arranged at the bottom of the side wall of the right chamber. The boiler is high in heat utilization rate and less in waste gas emission.

The invention discloses an oxygen-enriched combustion boiler system with a dehydration adjusting performance. After flue gas that is discharged from a boiler body is processed by a dedusting device and a desulfurizing device, the flue gas is divided into two parts. One part is introduced into a dehydration device through a dehydration inlet flue, and the other part goes through a dehydration adjusting flue. The flue gas, which has been dehydrated by the dehydration device, is divided into two parts. One part is introduced into a CO2 processing apparatus after going through a post-dehydration smoke discharge flue, and the other part is mixed with the flue gas from the dehydration adjusting flue after going through a post-dehydration recirculation flue. The mixed flue gas is divided into three parts; one part is introduced into a gas preheater and heated, the second part is introduced into a temperature adjusting air channel, and the third part is introduced into a powder production facility after going through a sealed air channel and a sealed blower fan. The performance of the boiler system on adjusting the dehydration amount is greatly enhanced, and the performance of the boiler system on adapting to the fluctuation of coal quality or change of coal species under an oxygen-enriched combustion condition is obviously enhanced.

The invention discloses a little oil burner of a double-sided ignition combination blunt body. A primary air pipeline is communicated with a secondary coal dust combustion chamber through a section of coal dust concentrator formed by a tapered pipeline with a throat part formed through invagination, a primary coal dust combustion chamber is arranged in the secondary coal dust combustion chamber, and the secondary coal dust combustion chamber extends into a tertiary coal dust combustion chamber. The upper side surface and the lower side surface of the tertiary coal dust combustion chamber connected with the secondary coal dust combustion chamber are provided with a plurality of secondary air inlets in equal intervals, an upper oil combustion chamber and a lower oil combustion chamber are arranged on the primary coal dust combustion chamber after aslant penetrating through the secondary coal dust combustion chamber, a combination blunt body is arranged at the port of the secondary coal dust combustion chamber, and a plurality of through-flow holes are arranged on the upper surface and the lower surface of the second coal dust combustion chamber positioned in the tertiary coal dust combustion chamber. By adopting the top and bottom arrangement of two oil guns, coal dust entering into the primary coal dust combustion chamber are ignited in a double side way, which strengthens turbulent mass and heat exchange of coal dust current and oil flame to rapidly heat the coal dust and form a fire curtain, thereby prolonging the residence time of the coal dust and strengthening the ignition process.

The invention discloses a spiral-flow type supercritical hydrothermal combustion device and method. The device comprises a plurality of hydrothermal flame generators which are uniformly distributed atthe upper part of a device main body in the circumferential direction, and each hydrothermal flame generator is provided with a high-pressure organic slurry input branch pipe and a high-pressure oxidant input branch pipe; the geometric axis of an output port of each hydrothermal flame generator is externally tangent to an imaginary circle of a core combustion area in the device, a burnout slag slurry gathering cone is arranged on the lower part of the device main body and connected with a supercritical thermal fluid guide cone on the lower part of the burnout slag slurry gathering cone, a plurality of burnout slag slurry outlets D are formed in the upper part of the side face of the burnout slag slurry gathering cone, and a supercritical thermal fluid outlet C is formed in the bottom of the supercritical thermal fluid guide cone. According to the invention, rapid ignition, efficient clean combustion and effective separation of slag flow after burnout of solid-phase or solid-containingfuels such as fossil fuels (such as coal) and urban/industrial sludge are realized, and the method is an advanced combustion technology for promoting efficient and pollution-free conversion of chemical energy into heat energy.

The invention relates to a device for igniting a fuel/air mixture in the combustion chamber of an internal combustion engine. The device includes an electrode which is connected to a voltage source and extends into a precombustion chamber, and the precombustion chamber is separated at least in some regions from the combustion chamber by a wall. A control device or a regulating device is provided which controls the voltage supply to the electrode such that a corona discharge is carried out in the precombustion chamber. The wall has at least one opening for exchanging fluids between the combustion chamber and precombustion chamber, and a fluid inlet opens into the precombustion chamber.

The invention relates to a combustor for efficiently and stably combusting anthracite coal in a decomposition furnace. The combustor consists of a center air passage, a clean air passage and an annular space, wherein the annular space is formed between the center air passage and the clean air passage; a plurality of coal air passages are uniformly distributed inside the annular space; a rotational porous annular partition is arranged at the outlet of the annular space; the outlet end of the center air passage and the outlet end of the clean air passage are each provided with a rotational flow generating device; the outlet of the center air passage adopts an external expansion design; the outlet of the clean air passage adopts an internal shrinkage design. The combustor disclosed by the invention is unique in structure and capable of making coal powder be completely coated and preheated by high-temperature tertiary air; meanwhile, clearances exist among a plurality of coal powder beams, so the contact area between high-temperature gas and the coal powder is greatly increased, the preheating speed of coal powder flow is remarkably increased, the anthracite coal is enabled to reach the ignition temperature after entering a high-oxygen-concentration region, the combustion efficiency is improved, and the amount of consumed coal is reduced; the amount of fed coal is automatically controlled, and the porous annular partition is rotationally regulated, so the rigidity of coal air is stabilized, the thermal load in a hearth is also effectively regulated, the combustion stability is guaranteed, the temperature in the decomposition furnace is uniformly distributed, and emission of NOx is reduced.

The invention provides a duct burner for a diesel engine. The outer cylinder wall of the burner is arranged on the outer part of the inner cylinder wall of the burner in a nesting mode, the end of theinner cylinder wall is sealed and provided with an ignition gun and an oil gun, the other end of the inner cylinder wall of the burner is opened as a flue gas outlet, and flue gas inlets are formed in the inner cylinder wall of the burner and the outer cylinder wall of the burner; a firing stabilizer is arranged in the inner cylinder wall of the burner and located on the rear side of the oil gun,and a fire detection device is arranged on the rear part of a nozzle of the firing stabilizer. According to the duct burner, the fuel ignition conditions are improved by preheating air, and when theduct burner is operated at low power and low oxygen content, the normal combustion of the small-flow fuel is ensured; because of the two-stage atomization mode, the particle diameter of the fuel is smaller, the distribution is more uniform, and the combustion is better under the low-power and low-oxygen environment; by adjusting the relative position of inner and outer casings of the oil gun, thefuel flow can be adjusted auxiliarily, and the exhaust gas temperature is facilitated to be more accurately controlled; and the fuel and an atomizing medium can be fully accelerated by a two-stage spray pipe structure of the head of the oil gun, the atomization effect is enhanced, and thus the fuel is better ignited and burned.

The present invention relates to the technical field of combustion and thermal energy conversion equipment, in particular to a single-return WNS structure boiler, including: a control cabinet, a burner, a pot shell, a corrugated furnace, a smoke pipe group, a water inlet, a hot water or steam outlet, and an economizer And the flue gas outlet, the water inlet, the hot water or steam outlet and the flue gas outlet are arranged on the surface of the pot shell. The burner, corrugated hearth and smoke pipe group are coaxially connected in sequence; the gas inlet is connected to the gas nozzle through the delivery pipe; a burner is arranged around the burner, and the burner is arranged at the other end of the installation pipe. The corrugated furnace and the smoke pipe group are installed in the pot shell to form a single-return structure; there is a flue gas outlet at the top of the tail of the pot shell, and an economizer is arranged between the flue gas outlet and the smoke pipe group. The invention saves the flue gas diverting parts, and adopts a single-return structure. The economizer is installed in the pot shell, and the structure is more compact, which is convenient for installation and transportation; efficiency, saving electricity.