53results about How to "Guaranteed burnout" patented technology

The invention relates to a fixed grate boiler allowing a square bundle of stalks to be combusted, and in order to solve the problems that conventional boiler allowing a bundle of stalks to be combusted cannot guarantee that the stalks are sufficiently combusted, slag bonding is easy to occur, discharged pollution is high, and the efficiency of the boiler is low. Square water-cooled jackets are arranged all around a pre-combustion chamber, and a part in front of the pre-combustion chamber communicates with a feed opening; an outlet of the pre-combustion chamber communicates with a step combustion chamber which is divided into two-stage combustion chambers, wherein fixed grates are arranged at the lower part of a first-stage combustion chamber; turnover grates are arranged at the lower part of a second-stage combustion chamber; a first-stage primary air chamber is arranged under the fixed grates, a second-stage primary air chamber is arranged under the turnover grates; the total amount of primary air is adjusted through an air inlet regulating baffle, and the first-stage primary air amount and the second-stage primary air amount are distributed through a middle adjusting baffle; secondary air filling nozzles are arranged on two side walls of the step combustion chamber; secondary air reinforcing nozzles are arranged on the front wall of the step combustion chamber, and an inlet of an after-combustion chamber communicates with an outlet of the step combustion chamber. The fixed grate boiler disclosed by the invention is used for heating by peasant households away from heating sources in winter and is used as heat supply heating sources of agricultural greenhouses.

The invention discloses a medical waste incinerator applied with the oxygen-enriched combustion technology, and belongs to the field of environmental-friendly and energy-saving devices. The medical waste incinerator comprises an incinerator body, a second combustion chamber, a combustion air fan, an oxygen-enriched air supply system and a smoke tail processing system. Combustible components of medical waste are decomposed into combustible gas (smoke) in the incinerator body, and combustible gas enters a second combustion chamber body and flows downwards; the combustion air fan delivers combustion air into the incinerator body and the second combustion chamber body; the oxygen-enriched air supply system is used for generating oxygen-enriched gas and leading the oxygen-enriched gas into the second combustion chamber body; the smoke is contacted with the common combustion air and the oxygen-enriched gas which enters into the second combustion chamber respectively, turbulence and perturbation are formed in a main combustion zone by the smoke, and therefore the fact that waste gas burns out is facilitated. According to the medical waste incinerator applied with the oxygen-enriched combustion technology, the burning temperature of the waste gas of the incinerator is guaranteed to the maximum extent through oxygen-enriched equipment and a secondary air system, the second combustion chamber is facilitated to form turbulent flow, the staying time of the smoke in the second combustion chamber is prolonged, and therefore dioxin is decomposed.

The invention discloses a biomass gas burner. The biomass gas burner comprises a gas pipe (1) located at the axial center, an air pipe (2) arranged outside the gas pipe (1) in a sleeving mode, an ignition device (3) and a flame detection device (4), wherein a round sealing plate (5) with the front diameter smaller than the gas pipe (1) and a conical surface (6) connecting the front end edge of a pipe body with the round sealing plate (5) are arranged on the front end face of the gas pipe (1), and two circles of gas distribution nozzles (7) perpendicular to the conical surface (6) are arranged on the conical surface (6); a pressurization cylinder (8) is arranged in the gas pipe (1), and the ignition device (3) and the flame detection device (4) penetrate through the air pipe (2) and extend to the front end of the air pipe (2). The biomass gas burner has the beneficial effects that biomass gas is separated through the nozzles after being pressurized primarily, the pressure head of biogas gas is stable, flow balancing is achieved, and the diameter and length of a flame are guaranteed; burning is complete and sufficient, and heat efficiency is high.

The invention relates to a method and a device capable of inhibiting refuse incineration from generating dioxins, which belongs to the field of environmental protection. The device is mainly characterized in that the hearth of the refuse incinerator is communicated with the hearth of a secondary heating furnace through a flue, a flue partition wall is arranged in the hearth of the secondary heating furnace, and a temperature measuring point is arranged in front of the furnace. The method mainly comprises the following steps: when being started or shut down, the refuse incinerator combusts part of coal, so that the furnace temperature is kept above 800 DEG C; fume, which is generated in the process of refuse incineration, directly enters the hearth of the secondary heating furnace through the flue to be combusted for the second time, under the monitoring control of the temperature measuring point, the furnace temperature is kept at 1100-1300 DEG C all the time by adjusting the fuel usage, and the fume can be stayed for more than 3 seconds, so that the dioxins in the fume are completely decomposed; and after being subject to secondary heating, the fume enters the convective region from the hearth to be processed in a convective heat exchange mode, and is discharged through the vertical shaft flue and the fume outlet on the tail of the vertical shaft flue. The invention has the advantages of obvious effects on inhibiting and eliminating dioxins, low operating cost and simple technological operation.

The invention discloses a quenching waste heat boiler and belongs to the field of environmental protection. The quenching waste heat boiler comprises a flue gas inlet pipe, a combustion settling chamber, a quenching heat exchanger and a flue gas outlet pipe which are sequentially connected in the flowing direction of flue gas. The quenching heat exchanger vertically communicates with the top of the combustion settling chamber. The flue gas inlet pipe and the quenching heat exchanger are arranged at the same side relative to the combustion settling chamber. The bottom, communicating with the combustion settling chamber, of the quenching heat exchanger is provided with at least one Laval jet tube. By adoption of the quenching waste heat boiler, the high-temperature flue gas of 800 DEG C canbe quickly cooled to 200 DEG C or below within 2 seconds, dioxin synthesis is restrained and meanwhile flue gas waste heat can be recovered.

The invention belongs to the technical field of garbage environment-friendly treatment equipment, and particularly relates to a centrifugal dispersion type efficient garbage incinerator which comprises an incinerator body, an incinerator container, a spiral plate, a rotating sleeve, a first rotating shaft, a supporting rod, an air pipe, a rotating air connector, a power part and a feeding part. Supporting rods are driven to rotate through the first rotating shaft, then garbage falling onto a supporting layer composed of the supporting rods is driven to rotate, the garbage is dispersed under the action of centrifugal force generated during rotation, the contact area between the garbage and air is increased, sufficient incineration of the garbage is facilitated, and then garbage incinerationefficiency is improved; and meanwhile, the rotating sleeve drives the spiral plate to rotate, the rotating spiral plate drives the garbage which falls at the bottom and is not completely burnt out tospirally ascend along the spiral plate, then the garbage which is not completely burnt out is prevented from being accumulated at the bottom of the incinerator container, then the garbage which is not completely burnt out is incinerated again, and then it is guaranteed that the garbage in the incinerator container is completely burnt out.

The invention provides a CFB oxygen-enriched combustion smoke near zero emission power generation system which is composed of a boiler, a powder feeding system, an air separating device, a chimney, multiple stages of heat exchangers, multiple stages of dust removers, a recirculating fan, an induced draft fan, a dewatering device, an SO2 separating device, a CO2 catching device, an N2 separator, an NOx reaction device and the like. By changing the concentration of oxygen in secondary gas, it is ensured that coal of different types is stably combusted and burnt out, boiler efficiency is improved, and the adaptability of the boiler to loads and coal types is enhanced. Through all the devices, dust, vapor, SO2, NOx, CO2 and the like brought by coal powder combustion smoke are recycled, harmful gas, fine particles and trace elements in the smoke are integrally removed, the smoke exhaust temperature is lowered to be close to the atmosphere temperature, the near zero emission of the combustion smoke is achieved, the environment is protected, and the maximization of resource utilization is achieved.

The invention discloses a medical waste incinerator applied with the oxygen-enriched combustion technology, and belongs to the field of environmental-friendly and energy-saving devices. The medical waste incinerator comprises an incinerator body, a second combustion chamber, a combustion air fan, an oxygen-enriched air supply system and a smoke tail processing system. Combustible components of medical waste are decomposed into combustible gas (smoke) in the incinerator body, and combustible gas enters a second combustion chamber body and flows downwards; the combustion air fan delivers combustion air into the incinerator body and the second combustion chamber body; the oxygen-enriched air supply system is used for generating oxygen-enriched gas and leading the oxygen-enriched gas into the second combustion chamber body; the smoke is contacted with the common combustion air and the oxygen-enriched gas which enters into the second combustion chamber respectively, turbulence and perturbation are formed in a main combustion zone by the smoke, and therefore the fact that waste gas burns out is facilitated. According to the medical waste incinerator applied with the oxygen-enriched combustion technology, the burning temperature of the waste gas of the incinerator is guaranteed to the maximum extent through oxygen-enriched equipment and a secondary air system, the second combustion chamber is facilitated to form turbulent flow, the staying time of the smoke in the second combustion chamber is prolonged, and therefore dioxin is decomposed.

The invention discloses a method and a device for gasifying staged combustion of an alternative fuel of a cement kiln. The device includes a gasified gas outputted from a pyrolysis gasifier and tertiary air of cement kiln fed into a decomposing furnace of the cement kiln, wherein the tertiary air of cement kiln is divided into a first path of air and a second path of air; the two paths of air are respectively fed into the decomposing furnace from upper and lower ends; 10%-30% of total volume of the tertiary air, served as the first path of air, is fed from the bottom of the decomposing furnace; the rest tertiary air, served as the second path of air, is fed from the top of the decomposing furnace; the gasified gas, following the first path of air, is fed from the bottom of the decomposing furnace; the temperature of the flue gas at the outlet of the decomposing furnace is measured for adjusting the air feeding ratio of the first path of air to the total volume of the tertiary air and the feeding volume of the gasified gas. According to the invention, the pyrolytic gasified gas and the decomposing furnace are organically combined, the device has the characteristics of high thermal efficiency and uniform temperature distribution of the decomposing furnace, and the generation of nitric oxide is reduced by forming a reducing atmosphere by feeding coal and air at different ratios into the combustion chamber.

The invention discloses a method and a device for gasifying staged combustion of an alternative fuel of a cement kiln. The device includes a gasified gas outputted from a pyrolysis gasifier and tertiary air of cement kiln fed into a decomposing furnace of the cement kiln, wherein the tertiary air of cement kiln is divided into a first path of air and a second path of air; the two paths of air are respectively fed into the decomposing furnace from upper and lower ends; 10%-30% of total volume of the tertiary air, served as the first path of air, is fed from the bottom of the decomposing furnace; the rest tertiary air, served as the second path of air, is fed from the top of the decomposing furnace; the gasified gas, following the first path of air, is fed from the bottom of the decomposing furnace; the temperature of the flue gas at the outlet of the decomposing furnace is measured for adjusting the air feeding ratio of the first path of air to the total volume of the tertiary air and the feeding volume of the gasified gas. According to the invention, the pyrolytic gasified gas and the decomposing furnace are organically combined, the device has the characteristics of high thermal efficiency and uniform temperature distribution of the decomposing furnace, and the generation of nitric oxide is reduced by forming a reducing atmosphere by feeding coal and air at different ratios into the combustion chamber.

The invention relates to a compound biomass clean and efficient combustion system which comprises a hearth and a grate arranged at the bottom of the hearth. A boiler arch is arranged in the hearth and comprises a front arch body, a rear arch body and a flame folding arch body, all of which are arranged in a staggered manner to form a zigzag-shaped flue. The system further comprises a flue gas recirculation unit, a secondary air unit and an SNCR unit. The flue gas recirculation unit comprises a flue gas recirculation air pipe which is arranged at the position, above a middle section of the grate, on the side wall of the lower portion of the hearth. The secondary air unit comprises secondary air pipes which are arranged on the side wall of the hearth in a classified manner according to different height positions. The SNCR unit comprises an SNCR spraying opening formed in the side wall of the upper portion of the hearth, and the flue gas recirculation air pipe, the secondary air pipes and the SNCR spraying opening penetrate the side wall of the hearth and stretch in the hearth. Compared with the prior art, the problems that a biomass layer combustion boiler is high in air excess coefficient, incomplete in combustion, low in combustion efficiency, high in NOx emission concentration and the like are solved effectively.

The invention relates to a biomass briquette hot water boiler system. The biomass briquette hot water boiler system is characterized by comprising a boiler, a water circulation system, a fire grate and combustion system, a heat transfer system, a briquette fuel feeding system, a dust removal system, an induced draught system, a flue gas recirculation system, a solar photovoltaic power system and a control system; fuel in the briquette fuel feeding system enters the fire grate and combustion system through a feeding opening in the lower end of the boiler and is used for combustion, high-temperature flue gas generated during combustion heats low-temperature water in the water circulation system through the heat transfer system, the heated high-temperature water is conveyed to a glasshouse, the low-temperature flue gas enters the dust removal system through a smoke outlet of the heat transfer system, the flue gas obtained after dust removal is conducted through the dust removal system is extracted by the induced draught system, part of the flue gas is exhausted through a chimney, the other part of the flue gas enters the fire gate and combustion system through the flue gas recirculation system, and furthermore a small part of flue gas is extracted and used for supplementing carbon dioxide required by the photosynthesis of crops to the glasshouse. The biomass briquette hot water boiler system can be widely applied to a renewable energy source heating system.