CN202511310U - Flue gas spraying purification and heat recovery system for gas-fired boilers and gas and oil burning devices - Google Patents

Flue gas spraying purification and heat recovery system for gas-fired boilers and gas and oil burning devices Download PDF

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Publication number
CN202511310U
CN202511310U CN201220066871XU CN201220066871U CN202511310U CN 202511310 U CN202511310 U CN 202511310U CN 201220066871X U CN201220066871X U CN 201220066871XU CN 201220066871 U CN201220066871 U CN 201220066871U CN 202511310 U CN202511310 U CN 202511310U
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China
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water
spray
flue
gas
pipe
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CN201220066871XU
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Chinese (zh)
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张清
张振东
朱蓉
万全
刘占卿
蒲婷
王斌
田雨忠
刘鹰
吴飞
刘长林
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Engineering Design and Research Institute of General Armament Department
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Engineering Design and Research Institute of General Armament Department
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Abstract

The utility model provides a flue gas spraying purification and heat recovery system for gas-fired boilers and gas and oil burning devices, and belongs to the technical field of configuration of devices for processing flue gas and exhaust gas. The system comprises a flue gas pipeline provided with a partition inside, a discharge flue is communicated with the flue gas pipeline, a flue gas waste heat recovery device is connected onto the discharge flue, an extended cooling flue is connected to the right end of the flue gas pipeline, the right end of the flue gas pipeline and the left end of the extended cooling flue are communicated with a first spraying chamber and a second spraying chamber respectively, the other end of the extended cooling flue is connected with a chimney, temperature controllers are arranged in the flue gas pipeline and the extended cooling flue respectively, the inner cavities of the flue gas pipeline and the extended cooling flue stretch into a first recovery pipe and a second recovery pipe respectively, the other ends of the first recovery pipe and the second recovery pipe are connected with a water processing system respectively, the inner cavities of the first spraying chamber and the second spraying chamber stretch into a first spraying water inlet pipe and a second spraying water inlet pipe respectively, and nozzles are arranged on the first and second spraying water inlet pipes. According to the system, the management is simple, heat in the gas-fired boilers and the gas and oil burning devices can be recovered safely and reliably; dust, sulfide, nitride and the like in the flue gas can be eliminated, and harmless discharge of the flue gas is achieved basically.

Description

The flue gas spray cleaning heat recovery system of gas fired-boiler and combustion gas, fuel oil equipment
Technical field
The utility model relates to the configuring technical field of smoke treatment or exhaust device, relates to the flue gas spray cleaning heat recovery system of a kind of gas fired-boiler and combustion gas, fuel oil equipment specifically.
Background technology
When natural gas boiler designs at body, for economical with materials, reduce cost etc., compare, cancelled economizer with coal-burning boiler, though volume little, compact conformation, also brought the too high defective of exhaust gas temperature.Exhaust gas temperature is too high, then can cause boiler efficiency to reduce; Mostly the source of the gas that gas fired-boiler uses is natural gas, and main component is methane (CH in the natural gas 4), contain a large amount of hydrogen atoms in the methane, with airborne oxygen atom burning (CH 4+ 2O 2=CO 2+ H 2O) after, can produce a large amount of water vapours, carbon dioxide, part carbon monoxide, sulfide and nitride etc.The shared volume of water vapour in the Theoretical Calculation flue gas is near 20%, so, strengthen the heat recovery and utilization of condensed water in the flue gas, be simple and direct, an effective way that can improve boiler efficiency, reduce environmental pollution.
Combustion gas, fuel oil equipments such as gas fired-boiler, direct combustion machine; Most is that heating, air-conditioning, domestic hot-water etc. provide thermal source; Mostly all be located at the densely populated areas such as office, commerce, residential quarter in city nearby, especially the chimney of direct combustion machine is all very short mostly, and the high temperature of discharge, sour gas are known from experience surrounding enviroment are worked the mischief; Also strengthened the tropical island effect in city, must administer.
The arch-criminal of global warming is the CO by burning ability source emission 2Isothermal chamber gas causes, and therefore, restriction and minimizing greenhouse gas emission are the major measure that global warming slows down in international community.Interrelated data provides: gas fired-boiler burning 1Nm 3Natural gas can produce 25m 3The flue gas of (150~200 ℃); Flue gas specific heat at constant pressure (21.75KJ/ (m 3. ℃)), i.e. 1Nm 3The flue gas that combustion of natural gas produces, the 1 ℃ of heat that can take away 0.151kW of every rising; 1Nm 3Behind the combustion of natural gas, can produce the condensate of about 1.62kg, the about 4000KJ of its latent heat of vaporization (1.11kW.h) is equivalent to account for natural gas low heat value (8.95~10.83kW/Nm 3) 12.4~~10.24%, major part can become the water vapour state along with flue gas is discharged, in addition some can condense into water, like the condensate of can not in time draining, can produce corrosion to combustion gas such as boiler, direct combustion machine, fuel oil equipment, flue etc., reduce its service life; If this two parts energy does not reclaim, be very big waste really.Burning 1Nm 3Natural gas approximately produces the 2.863kg carbon dioxide, is very big pollution, has both increased greenhouse effects, also is the principal element of global warming.
The blowdown of combustion gas, fuel oil equipment, condensed water and heat also are thermal pollution sources, all still have very high recycle value.
The utility model content
The purpose of the utility model provides the flue gas spray cleaning heat recovery system of a kind of gas fired-boiler and combustion gas, fuel oil equipment; Its system management is simple and convenient; Can safe and reliable recovery gas fired-boiler, the heat of dischargings such as combustion gas, fuel oil equipment; And pollutions such as the dust in removing smoke, carbon monoxide, carbon dioxide, sulfide, nitride make discharged flue gas reach innoxious discharging basically.
In order to realize such scheme; The technical solution of the utility model is: the flue gas spray cleaning heat recovery system of a kind of gas fired-boiler and combustion gas, fuel oil equipment; Control system and flue comprising some gas fired-boilers or combustion gas, fuel oil equipment, control gas fired-boiler or combustion gas, fuel oil equipment work; The inner chamber of said flue is provided with the dividing plate that inner cavity of pipe is divided into first and second backhaul flue; Said first and second backhaul flue communicates, and the smokejack of said gas fired-boiler or combustion gas, fuel oil equipment communicates with the first backhaul flue, connects flue gas waste heat recovery apparatus on each said smokejack; The right-hand member of said flue is communicated with first spray chamber; The right-hand member of said first spray chamber is communicated with second spray chamber, and the bottom is provided with the watershed between said first and second spray chamber inner chamber, and the inner chamber of the said flue and first spray chamber stretches at least one first return water pipe respectively; Stretch at least one first spray water inlet pipe in said first spray chamber; Stretch at least one second spray water inlet pipe in said second spray chamber, be separately installed with several nozzles on said first and second spray water inlet pipe, the right-hand member of said second spray chamber is communicated with the prolongation cooling stack; The inner chamber of said prolongation cooling stack stretches at least one second return water pipe; The other end of said first and second return water pipe is connected with water treatment system respectively, and the other end of said prolongation cooling stack is communicated with chimney, said flue with prolong cooling stack in be respectively equipped with first and second temperature controller that is connected with the control system.
The flue gas spray cleaning heat recovery system of the utility model gas fired-boiler and combustion gas, fuel oil equipment, wherein each said nozzle is the high pressure fine atomizing nozzle, said nozzle be back to the spray formula be arranged at first and second the spray water inlet pipe on.
The flue gas spray cleaning heat recovery system of the utility model gas fired-boiler and combustion gas, fuel oil equipment, the inner chamber upper and lower end of wherein said prolongation cooling stack vertically is provided with at least one flue sheet respectively, will prolong cooling stack and form labyrinth type.
The flue gas spray cleaning heat recovery system of the utility model gas fired-boiler and combustion gas, fuel oil equipment stretches into several blow-off pipes between wherein said first and second spray chamber.
The flue gas spray cleaning heat recovery system of the utility model gas fired-boiler and combustion gas, fuel oil equipment; Wherein said water treatment system comprises several one-level shower water clarifiers; The other end of each said first return water pipe stretches into the inner chamber of one-level shower water clarifier; Each said one-level shower water clarifier is communicated with through the inner chamber that one-level spray cleaning return pipe and condensed water are recycled water tank respectively; Said condensed water is recycled water tank and is communicated with through the inner chamber of overflow pipe with secondary spray water tank; The other end of each said second return water pipe stretches into the inner chamber of secondary spray water tank, and the inner chamber that said secondary spray water tank is handled water tank through overflow pipe and draining is communicated with, and said condensed water is recycled water tank and is communicated with the said first spray water inlet pipe through the one-level spray header; Be parallel with several one-level spray water pumps on the said one-level spray header; Said secondary spray water tank is communicated with the said second spray water inlet pipe through the secondary spray header, is parallel with several secondary spray water pumps on the said secondary spray header, and each said I and II spray water pump is connected with the control system respectively; Said condensed water recycles water tank and draining processing water tank cavity is respectively equipped with third and fourth temperature controller; Said third and fourth temperature controller is connected with the control system respectively, and said smokejack is communicated with flue condensate return pipe one end through first pipeline, and said flue gas waste heat recovery apparatus is communicated with the flue condensate return pipe through second pipeline; The other end of said flue condensate return pipe stretches into condensed water and recycles in the water tank; Said draining is handled water tank and is connected with drainpipe, and first electric control valve is installed on the said drainpipe, and said first electric control valve is connected with the control system.
The flue gas spray cleaning heat recovery system of the utility model gas fired-boiler and combustion gas, fuel oil equipment; Wherein also comprise underground condensed water collection water tank; Said gas fired-boiler or combustion gas, fuel oil equipment are collected water tank through boiler condensate return pipe and underground condensed water and are communicated with; Said underground condensed water is collected in the water tank and is provided with several condensated water lifting pumps, and said condensated water lifting pump is connected with an end of drinking-water pipe, and the other end of said drinking-water pipe is recycled water tank with condensed water and is communicated with.
The flue gas spray cleaning heat recovery system of the utility model gas fired-boiler and combustion gas, fuel oil equipment; The inner chamber of wherein said secondary spray water tank is placed with one-level waste heat recovery coil pipe; One end of said one-level waste heat recovery coil pipe is communicated with demineralized water or running water; The other end is communicated with secondary waste heat recovery coil pipe; Connect demineralized water or on the said one-level waste heat recovery coil pipe of water end (W.E.) second electric control valve is installed from the beginning; The inner chamber that said condensed water is recycled water tank is placed with secondary waste heat recovery coil pipe, and an end of said secondary waste heat recovery coil pipe and one-level waste heat recovery coil pipe or demineralized water, running water are communicated with, and the other end is with gas fired-boiler or combustion gas, fuel oil equipment feeds water or the domestic hot-water is communicated with; Connect demineralized water, on the said secondary waste heat recovery coil pipe of water end (W.E.) the 3rd electric control valve be installed from the beginning, said second and third electric control valve is connected with the control system respectively.
The flue gas spray cleaning heat recovery system of the utility model gas fired-boiler and combustion gas, fuel oil equipment; Wherein said condensed water is recycled water tank and is communicated with the one-level spray header that sprays between the water pump and first water inlet pipe in one-level through one-level spray evacuated tube; On the said one-level spray evacuated tube the 4th electric control valve is installed; Said secondary spray water tank is communicated with the secondary spray header that sprays between the water inlet pipe at secondary spray water pump to the second through secondary spray evacuated tube; On the said secondary spray evacuated tube the 5th electric control valve is installed, said fourth, fifth electric control valve is connected with the control system respectively.
The flue gas spray cleaning heat recovery system of the utility model gas fired-boiler and combustion gas, fuel oil equipment; Wherein said one-level shower water clarifier connects through backwash water pipe and running water and the one-level spray header is connected; Connect the backwash return pipe on said first return water pipe; The other end of said backwash return pipe is recycled water tank with condensed water and is communicated with; Said condensed water is recycled water tank and is communicated with backwash and replenishing water tank of water through overflow pipe, and said backwash and replenishing water tank of water and running water are connected, and said backwash and replenishing water tank of water are communicated with the one-level spray header of recycling at condensed water between water tank and the one-level spray water pump.
After adopting such scheme; The flue gas spray cleaning heat recovery system of the utility model gas fired-boiler and combustion gas, fuel oil equipment is through being provided with waste-heat recovery device on the smokejack of gas fired-boiler or combustion gas, fuel oil equipment etc.; Make from gas fired-boiler or combustion gas, flue gas that fuel oil equipment gives off and the heat of dust and reduce; Waste-heat recovery device can be used as the heat that reclaims among gas fired-boiler or combustion gas, fuel oil equipment feedwater or the hot water supply system and using, and improves the thermal efficiency of gas fired-boiler or combustion gas, fuel oil equipment, first and second backhaul flue that flue gas that comes out from smokejack and dust get into flue again; A part of dust is fallen under gravity and effect of inertia; Make flue gas and dust separation, can make the flue gas cooling, be convenient to condensed water and separate out through first and second backhaul flue; It is steady also to be convenient to flow of flue gas, gets into first spray chamber, and flue gas gets into first spray chamber, adopts the mode of contrary spray to make water fully mix with flue gas, and flue gas is carried out first class purification; Get into second spray chamber then,, adopt mode along spray in order to reduce resistance, boosting flow of flue gas speed, and adopt the water of dosing to spray, and make flue gas obtain further purified treatment, eliminated nuisance basically; Increase the watershed between first and second spray chamber, made the water of two spray chambers separately handle, more economical; Through prolonging cooling stack, the water in the flue gas is further separated again.Make flue-gas temperature lower, drier.Discharged flue gas from chimney; Temperature reduces greatly; Eliminated pollutions such as the dust in the flue gas, carbon monoxide, carbon dioxide, sulfide, nitride, make discharged flue gas reach innoxious discharging basically, and this system has managed automatically through the control system; Simple and convenient, safe and reliable to operation.
Description of drawings
Fig. 1 is the structural representation of the flue gas spray cleaning heat recovery system of the utility model gas fired-boiler and combustion gas, fuel oil equipment.
The specific embodiment
As shown in Figure 1; The flue gas spray cleaning heat recovery system of the utility model gas fired-boiler and combustion gas, fuel oil equipment comprises two gas fired-boilers 1, the control system 2 of control gas fired-boiler 1 work, flue 4 and the water treatment system that is connected with the smokejack 3 of two gas fired-boilers 1.
Smokejack 3 all adopts liner acid-proof cement to process, and connects flue gas waste heat recovery apparatus 5 on the smokejack 3, is used to collect the flue gas heat in the smokejack 3.The left side of flue 4 is processed with first manhole, is used for the dust that periodic cleaning flue 4 inner chamber bottom surfaces are built up.
The inner chamber of flue 4 is welded with the dividing plate 6 that inner cavity of pipe is divided into the first backhaul flue 45 and the second backhaul flue 46.The first backhaul flue 45 communicates with the second backhaul flue 46, and smokejack 3 communicates with the first backhaul flue 45.The right-hand member of flue 4 is communicated with first spray chamber 47.The right-hand member of first spray chamber 47 is communicated with second spray chamber 48, and the bottom between first spray chamber 47 and second spray chamber, 48 inner chambers is provided with watershed 10, and this watershed 10 is used for the water of first spray chamber 47 and second spray chamber 48 is separately handled, and is more economical.Stretching into several first return water pipe, 11, the first return water pipes 11 in the flue 4 and first spray chamber 47 is respectively made by corrosion-resistant tubing.The lower end of first return water pipe 11 is connected with water treatment system; The right-hand member of second spray chamber 48 is communicated with prolongation cooling stack 7; The inner chamber upper and lower end that prolongs cooling stack 7 vertically is processed with several flue sheets 49 respectively, makes to prolong cooling stack 7 formation labyrinth patterns.Owing to contain a large amount of water vapours in the flue gas; Flue gas can condense into droplet after going out chimney to run into cold air; Be exactly that our chimney seen emits white cigarette phenomenon; Address this problem, will prolong cooling stack 7 through labyrinth type water is separated before chimney breast with flue gas as much as possible.Water is reclaimed, make flue gas drier, temperature is lower when chimney is gone out.The inner chamber that prolongs cooling stack 7 stretches into several second return water pipe, 12, the second return water pipes 12 and is made by corrosion-resistant tubing.The lower end of second return water pipe 12 is connected with water treatment system, and the other end that prolongs cooling stack 7 is communicated with chimney, is separately installed with first temperature controller 8 and second temperature controller 9 that is connected with control system 2 in flue 4 and the prolongation cooling stack 7.The upper end of several first spray water inlet pipes 13 is stretched in first spray chamber 47, and the upper end of several second spray water inlet pipes 14 is stretched in second spray chamber 48.On the first spray water inlet pipe 13 several first nozzles are installed; On the second spray water inlet pipe 14 several second nozzles are installed; First and second nozzle is the high pressure fine atomizing nozzle, and first nozzle spray direction is in the opposite direction with the flow of flue gas in the second backhaul flue 46 that gets into flue 4.The spray direction of second nozzle is identical with flow of flue gas direction in get into prolonging cooling stack 7.Stretch into some blow-off pipes 50 between first spray chamber 47 and second spray chamber 48, be used to get rid of in first spray chamber 47 and the foul in second spray chamber 48.
The right side that prolongs cooling stack 7 is processed with second manhole, is used for maintenance and maintenance.Be processed with the 3rd manhole on the handing-over zone between flue 4 and the prolongation cooling stack 7, be used for the parts that periodic inspection is positioned at this zone, place.
Water treatment system comprises that two one-level shower water clarifiers 15, condensed water of being done by stainless steel or heat resistant glass steel recycle that water tank 17, secondary spray water tank 18, draining are handled water tank 19, underground condensed water is collected water tank 31 and backwash and replenishing water tank of water 44.
The other end of each first return water pipe 11 is communicated with the inner chamber of one-level shower water clarifier 15; Two one-level shower water clarifiers 15 are communicated with through the inner chamber of one-level spray cleaning return pipe 16 with condensed water recycling water tank 17 respectively, and one-level spray cleaning return pipe 16 is processed by corrosion-resistant tubing.Condensed water return water tank 17 is communicated with through the inner chamber of overflow pipe with secondary spray water tank 18, and the other end of each second return water pipe 12 is communicated with the inner chamber of secondary spray water tank 18, and secondary spray water tank 18 tops are provided with first dosing mouth.The inner chamber that secondary spray water tank 18 is handled water tank 19 through overflow pipe and draining is communicated with, and draining is handled water tank 19 tops and is provided with second dosing mouth.Condensed water is recycled water tank 17 and is communicated with through the lower end of one-level spray header 20 with the first spray water inlet pipe 13, is parallel with two one-level spray water pumps 21 on the one-level spray header 20; Secondary spray water tank 18 is communicated with through the lower end of secondary spray header 22 with the second spray water inlet pipe 14, two secondary sprays of parallel connection water pump 23 on the secondary spray header 22.Two one-levels spray water pump 21, two secondary spray water pumps 23 are connected with control system 2 respectively, and water tank 19 connection drainpipes 26 are handled in draining, first electric control valve, 27, the first electric control valves 27 are installed on the drainpipe 26 are connected with control system 2.Above-mentioned each overflow pipe, one-level spray header 20, first water inlet pipe 13, secondary spray header 22, second water inlet pipe 14 and drainpipe 26 are processed by corrosion-resistant tubing.
Smokejack 3 is communicated with flue condensate return pipe 29 1 ends through first pipeline 28; Flue gas waste heat recovery apparatus 5 is communicated with flue condensate return pipe 29 through second pipeline 30, and the other end of flue condensate return pipe 29 stretches into condensed water and recycles in the water tank 17.Above-mentioned first pipeline 28, flue condensate return pipe 29 and second pipeline 30 are processed by corrosion-resistant tubing.
Gas fired-boiler 1 is collected water tank 31 through boiler condensate return pipe 29 and underground condensed water and is communicated with; Underground condensed water is collected in the water tank 31 and is provided with two condensated water lifting pumps 32; Condensated water lifting pump 32 is connected with an end of the drinking-water pipe of being processed by corrosion-resistant tubing 33, and the other end of drinking-water pipe 33 is recycled water tank 17 with condensed water and is communicated with.
Condensed water is recycled the one-level spray evacuated tube 34 of water tank 17 through being processed by corrosion-resistant tubing; Be communicated with the one-level spray header 20 between the one-level spray water pump 21 and the first spray water inlet pipe 13; On the one-level spray evacuated tube 34 the 4th electric control valve 35 is installed; The secondary spray evacuated tube 36 of secondary spray water tank 18 through processing by corrosion-resistant tubing; Be communicated with the secondary spray header 22 between secondary spray water pump 23 to second spray water inlet pipes 14, on the secondary spray evacuated tube 36 the 5th electric control valve 37, the four electric control valves 35 be installed and be connected with control system 2 respectively with the 5th electric control valve 37.
The inner chamber of secondary spray water tank 18 is placed one-level waste heat recovery coil pipe 40; One end of one-level waste heat recovery coil pipe 40 is communicated with demineralized water or running water; The other end is communicated with secondary waste heat recovery coil pipe 38; Connect demineralized water or on the one-level waste heat recovery coil pipe 40 of water end (W.E.) second electric control valve 39 is installed from the beginning, condensed water is recycled the inner chamber of water tank 17 and is placed secondary waste heat recovery coil pipe 38, and an end of secondary waste heat recovery coil pipe 38 and one-level waste heat recovery coil pipe 40 or demineralized water, running water are communicated with; The other end is communicated with gas fired-boiler or combustion gas, fuel oil equipment feedwater or domestic hot-water, connects; Demineralized water, the 3rd electric control valve 41, the second electric control valves 39 are installed on the secondary waste heat recovery coil pipe 38 of water end (W.E.) from the beginning and are connected with control system 2 respectively with the 3rd electric control valve 41.
One-level shower water clarifier 15 is connected through backwash water pipe 42 and running water; Be connected with the backwash return pipe of processing by corrosion-resistant tubing 43 on first return water pipe 11; The other end of backwash return pipe 43 is recycled water tank 17 with condensed water and is communicated with; Condensed water is recycled water tank 17 and is communicated with backwash and replenishing water tank of water 44 through overflow pipe, and backwash and replenishing water tank of water 44 are connected with running water, and backwash and replenishing water tank of water 44 are communicated with the one-level spray header of recycling at condensed water between water tank 17 and the one-level spray water pump 21 20; The top of backwash and replenishing water tank of water 44 is provided with the 3rd dosing mouth, is used for dosing and handles water.
In the foregoing description; Be provided with first temperature controller 8 in the flue 4, prolong in the cooling stack 7 and be provided with second temperature controller 9; Condensed water is recycled and to be provided with the 3rd temperature controller 24, draining in water tank 17 inner chambers and to handle water tank 19 inner chambers and be provided with the 4th temperature controller 25, the first temperature controllers 8, second temperature controller 9, the 3rd temperature controller 24 and be connected with control system 2 respectively with the 4th temperature controller 25.Being provided with like this is that temperature in inner chamber through the inner chamber of flue 4, the inner chamber that prolongs cooling stack 7, condensed water being recycled water tank 17 and the inner chamber that water tank 19 is handled in draining feeds back to control system 2, makes control system 2 control the operation of the flue gas spray cleaning heat recovery system of the utility model gas fired-boiler and combustion gas, fuel oil equipment.
During use, two gas fired-boilers 1 enter flue gas, dust two smokejacks 3 from the exhaust opening of gas fired-boiler 1 through the control of control system 2, and this moment, flue gas, dust were sponged a part of heat by waste-heat recovery device 5; The flue gas, the dust that come out from two smokejacks 3 get in the flue 4; The dividing plate 6 that is provided with in the flue 4 is divided into the first backhaul flue 45 and the second backhaul flue 46 with the inner chamber of flue 4; Flue gas, the dust of discharging from smokejack 3 at first get in the first backhaul flue 45; Be able to separate at gravity and effect of inertia next part dust, drop on the inner chamber bottom surface of flue 4 with flue gas; Flue gas, the dust of discharging from the first backhaul flue 45 get in the second backhaul flue 46, and under gravity and effect of inertia, another part dust separates with flue gas; The flue gas and the dust that come out from the second backhaul flue 46 get in first spray chamber 47; Receive first nozzle spray on the first spray water inlet pipe 13 in first spray chamber 47, the spray direction of first nozzle is opposite with the flow direction of flue gas, and shower water is fully mixed with flue gas; Make flue gas cool-down; Make a large amount of water vapours, carbon dioxide, carbon monoxide, sulfide and nitride etc. in the flue gas soluble in water, form acid, under the separated retaining in watershed 10; First spray chamber, 47 intracavity bottoms in shower water 10 left sides in the watershed accumulate, and shower water gets in the one-level shower water clarifier 15 through first return water pipe 11; The flue gas that comes out in first spray chamber 47 gets in second spray chamber 48; Receive the spray of second nozzle on the second spray water inlet pipe 14 in second spray chamber 48 again; Make flue gas further lower the temperature, eliminate harmful substance, because the spray direction of second nozzle is identical with the flow of flue gas direction, the spray of this second nozzle plays the boosting flow of flue gas; To reduce the flow resistance in the flue gas; And the further effect of flue, water vapour, carbon dioxide, carbon monoxide, sulfide and the nitride etc. that are about to contain in the flue gas are dissolved in the buck once more, combine the acid in the flue gas.And the shower water of second nozzle ejection accumulates in the intracavity bottom of second spray chamber 48 on 10 right sides, watershed; These shower waters that accumulate directly get in the secondary spray water tank 18; Use through recirculation spray after the dosing in secondary spray water tank 18, owing to most of dust is kept here in the flue 4, only surplus tiny flying dust also is mixed in the flue gas; Through the spray effect of the nozzle in first spray chamber 47 and second spray chamber 48, the flying dust in the flue gas is thoroughly removed again.The flue gas of discharging from second spray chamber 48 is through prolonging cooling stack 7 outside chimney the discharging process; The water droplet that contains in the flue gas drops on the intracavity bottom that prolongs cooling stack 7 naturally; And the flue gas labyrinth type prolongs further cooling naturally in the cooling stack 7; Flue gas is further separated with water, water is reclaimed, make the flue-gas temperature of chimney outlet lower, drier.
The dust of sedimentation in flue 4 can regularly be removed; Dust and harmful substance water-soluble in spray chamber 47 get in two one-level shower water clarifiers 15 with first return water pipe 11; The pattern that one-level shower water clarifier 15 adopts and filters, absorption combines; Owing to get into the harmful substance of dissolving in the water in the one-level shower water clarifier 15; Make water be acid,, water can be recycled through filtration, the exchange of filtrate in the clarifier.In order to recover the laxity of filtrate in the clarifier; Strengthen the chance that filtrate contacts with water, also, be provided with the backwash water pipe of connecting with running water 42 for the filtrate that adsorbs obtains regeneration; The backwashing water major part is drained; A part is recovered to condensed water and recycles in the water tank 17, can make the acid that is adsorbed on the filtrate be neutralized, separate out through adding alkali at the 3rd dosing mouth during backwash.
Two one-level shower water clarifiers 15 are communicated with through the inner chamber that one-level spray cleaning return pipe 16 and condensed water are recycled water tank 17 respectively; The condensed water of from gas fired-boiler 1, collecting flows into underground condensed water naturally and collects water tank 31; The condensed water that underground condensed water is collected in the water tank 31 is evacuated in the condensed water recycling water tank 17 through condensated water lifting pump 32, collect one of source as condensed water, and the condensed water that collect from flue gas waste heat recovery apparatus 5 on another road gets in the condensed water recycling water tank 17 through flue condensate return pipe 29; The source is collected on another road as condensed water; The entering condensed water is recycled and still is acid in the water in the water tank 17, adds alkali through first dosing mouth of recycling water tank 17 at condensed water, makes acid-base neutralization; Make flue gas further purified; Gas cleaning makes full use of the condensed water in gas fired-boiler 1 and the smokejack 3, when the condensed water deficiency of smokejack 3, when generally just bringing into operation in system; Replenish in entering backwash and the replenishing water tank of water 44 with running water, through its liquid level automatic water supplement of ball-cock assemblys control in backwash and the replenishing water tank of water 44; Condensed water is recycled water tank 17 through two one-level spray water pumps 21, and condensed water is evacuated in the first spray water inlet pipe 13, sprays the constantly condensed water source of spray first spray chamber 47 inner chambers of water inlet pipe 13 as first; Because boiler and flue produce condensate endlessly; Water can get more and more; Making condensed water recycle water tank 17 unnecessary water gets in the secondary spray water tank 18 through overflow pipe; Secondary spray water tank 18 is evacuated to condensed water in second water inlet pipe 14 through two secondary spray water pumps 23, and it is as the condensed water source of the second spray water inlet pipe, 14 continuous spray second spray chamber 48 inner chambers; Water in the secondary spray water tank 18 are more and more, and unnecessary water gets into draining through overflow pipe and handles in the water tank 19, and draining is handled in the water tank 19 through from the second dosing mouth dosing, the water treatment in the water tank 19 is handled in draining after, chemically examine and emit after qualified.
Because the heat exchange of shower water and high-temperature flue gas; Can make the shower water temperature raise gradually; In secondary spray water tank 18 and condensed water recycling water tank 17, one-level waste heat recovery coil pipe 40 and secondary waste heat recovery coil pipe 38 are set respectively; Heat exchange through gas fired-boiler or combustion gas, fuel oil equipment feedwater or domestic hot-water; Both with low spray water temperature, reduce the heat discharging, gas fired-boiler, combustion gas, fuel oil equipment feed temperature are improved, improved the thermal efficiency of gas fired-boiler, combustion gas, fuel oil equipment.One-level waste heat recovery coil pipe 40 and secondary waste heat recovery coil pipe 38 are set simultaneously, and each coil pipe can be regulated and control the temperature of the interior water of water tank separately respectively, takes measures for water tank is antifreeze, can regulate and control the exhaust temperature of flue gas again simultaneously, utilizes fume afterheat to greatest extent.
The flue gas spray cleaning heat recovery system of the utility model gas fired-boiler and combustion gas, fuel oil equipment is placed first temperature controller 8 and second temperature controller 9 at the inner chamber of flue 4 and the inner chamber of prolongation cooling stack 7; Can control combustion gas, fuel oil equipment discharged flue gas temperature such as gas fired-boiler, direct combustion machine; Condensed water is recycled the inner chamber of water tank 17 and the inner chamber of 1 draining processing water tank 18 is placed the 3rd temperature controller 24 and the 4th temperature controller 25 respectively; Can keep watch on the water temperature in two water tanks at any time; In case appearance is unusual or reach the temperature that is provided with in advance, can report to the police automatically, informs that the operator on duty takes the measure of being scheduled to.
In sum, the flue gas spray cleaning heat recovery system of the utility model gas fired-boiler and combustion gas, fuel oil equipment has the following advantages:
1, running gear is few, security of operation, reliable;
2, full-automatic operation, is convenient to file administration at Computer Storage, manages simple, convenient;
3, adopt the mode of water spray, make flue gas be purified, lower the temperature, thoroughly eliminated the pollution of nuisances such as flue dust, heat, carbon monoxide, carbon dioxide, sulfide, nitride;
4, a large amount of boiler (combustion gas, fuel oil equipment) sewer and heat have been reclaimed; Reclaim fume afterheat; Improve combustion gas such as boiler, direct combustion machine, fuel oil equipment feedwater or hot water supply system's temperature, improved the thermal efficiency of combustion gas such as boiler, direct combustion machine, fuel oil equipment;
5, shower water can recycle, and reclaim in the flue gas, in combustion gas, the fuel oil equipments such as boiler, direct combustion machine and the condensed water in the waste-heat recovery device as replenishing the conserve water resource;
6, adopt 2 grades of sprays, the I and II shower water is handled respectively, more practices thrift;
7, the one-level shower water adopts the way of filtering, adsorbing to handle, and the secondary shower water adopts the mode of dosing to handle, and makes flue gas cleaner;
8, I and II waste heat recovery coil pipe is set, each coil pipe can be regulated and control the temperature of the interior water of water tank separately respectively, takes measures for water tank is antifreeze, can regulate and control the exhaust temperature of flue gas again simultaneously, utilizes fume afterheat to greatest extent;
9, each spray header is provided with return duct, and the water when not spraying in the shower can flow back to water tank separately automatically, guarantees that spray chamber and pipeline can bursting by freezing;
10, waste heat recovery, energy-saving and emission-reduction, protection environment, with low cost;
11, because the fume emission after handling is lower than state specified standards, the discharging flue gas is cleaner, temperature is lower, can consider to reduce chimney height, practices thrift engineering cost.
The above embodiment describes the preferred implementation of the utility model; Be not that scope to the utility model limits; Under the prerequisite that does not break away from the utility model design spirit; Various distortion and improvement that the common engineers and technicians in this area make the technical scheme of the utility model all should fall in the protection domain that claims of the utility model confirm.

Claims (9)

1. the flue gas spray cleaning heat recovery system of gas fired-boiler and combustion gas, fuel oil equipment; It is characterized in that: comprise the control system (2) and the flue (4) of some gas fired-boilers or combustion gas, fuel oil equipment (1), control gas fired-boiler or combustion gas, fuel oil equipment (1) work, the inner chamber of said flue (4) is provided with the dividing plate (6) that inner cavity of pipe is divided into first and second backhaul flue (45,46); Said first and second backhaul flue (45; 46) communicate, the smokejack (3) of said gas fired-boiler or combustion gas, fuel oil equipment (1) communicates with the first backhaul flue (45), and each said smokejack (3) is gone up and connected flue gas waste heat recovery apparatus (5); The right-hand member of said flue (4) is communicated with first spray chamber (47); The right-hand member of said first spray chamber (47) is communicated with second spray chamber (48), and the bottom is provided with watershed (10) between said first and second spray chamber (47,48) inner chamber; The inner chamber of the said flue (4) and first spray chamber stretches at least one first return water pipe (11) respectively; Stretch at least one first spray water inlet pipe (13) in said first spray chamber (47), stretch at least one second spray water inlet pipe (14) in said second spray chamber (48), said first and second spray water inlet pipe (13; 14) be separately installed with several nozzles on; The right-hand member of said second spray chamber (48) is communicated with prolongation cooling stack (7), and the inner chamber of said prolongation cooling stack (7) stretches at least one second return water pipe (12), said first and second return water pipe (11; 12) the other end is connected with water treatment system respectively; The other end of said prolongation cooling stack (7) is communicated with chimney, said flue (4) with prolong cooling stack (7) in be respectively equipped with first and second temperature controller (8,9) that is connected with control system (2).
2. the flue gas spray cleaning heat recovery system of gas fired-boiler as claimed in claim 1 and combustion gas, fuel oil equipment; It is characterized in that: each said nozzle is the high pressure fine atomizing nozzle; Said nozzle is back to the spray formula and is arranged on first and second spray water inlet pipe (13,14).
3. the flue gas spray cleaning heat recovery system of gas fired-boiler as claimed in claim 1 and combustion gas, fuel oil equipment; It is characterized in that: the inner chamber upper and lower end of said prolongation cooling stack (7) vertically is provided with at least one flue sheet (49) respectively, will prolong cooling stack (7) and form labyrinth type.
4. like the flue gas spray cleaning heat recovery system of the described gas fired-boiler of one of claim 1-3 and combustion gas, fuel oil equipment, it is characterized in that: stretch into several blow-off pipes (50) between said first and second spray chamber (47,48).
5. the flue gas spray cleaning heat recovery system of gas fired-boiler as claimed in claim 4 and combustion gas, fuel oil equipment; It is characterized in that: said water treatment system comprises several one-level shower water clarifiers (15); The other end of each said first return water pipe (11) stretches into the inner chamber of one-level shower water clarifier (15); Each said one-level shower water clarifier (15) is communicated with through the inner chamber that one-level spray cleaning return pipe (16) and condensed water are recycled water tank (17) respectively; Said condensed water is recycled water tank (17) and is communicated with through the inner chamber of overflow pipe with secondary spray water tank (18), and the other end of each said second return water pipe (12) stretches into the inner chamber of secondary spray water tank (18), and the inner chamber that said secondary spray water tank (18) is handled water tank (19) through overflow pipe and draining is communicated with; Said condensed water is recycled water tank (17) and is communicated with the said first spray water inlet pipe (13) through one-level spray header (20); Be parallel with several one-level spray water pumps (21) on the said one-level spray header (20), said secondary spray water tank (18) is communicated with the said second spray water inlet pipe (14) through secondary spray header (22), is parallel with several secondary spray water pumps (23) on the said secondary spray header (22); Each said I and II spray water pump (21; 23) be connected with control system (2) respectively, said condensed water recycles water tank (17) and draining processing water tank (19) inner chamber is respectively equipped with third and fourth temperature controller (24,25); Said third and fourth temperature controller (24; 25) be connected with control system (2) respectively, said smokejack (3) is communicated with flue condensate return pipe (29) one ends through first pipeline (28), and said flue gas waste heat recovery apparatus (5) is communicated with flue condensate return pipe (29) through second pipeline (30); The other end of said flue condensate return pipe (29) stretches into condensed water and recycles in the water tank (17); Said draining is handled water tank (19) and is connected with drainpipe (26), and first electric control valve (27) is installed on the said drainpipe (26), and said first electric control valve (27) is connected with control system (2).
6. the flue gas spray cleaning heat recovery system of gas fired-boiler as claimed in claim 5 and combustion gas, fuel oil equipment; It is characterized in that: also comprise underground condensed water collection water tank (31); Said gas fired-boiler or combustion gas, fuel oil equipment (1) are collected water tank (31) through boiler condensate return pipe (29) and underground condensed water and are communicated with; Said underground condensed water is collected in the water tank (31) and is provided with several condensated water lifting pumps (32); Said condensated water lifting pump (32) is connected with an end of drinking-water pipe (33), and the other end of said drinking-water pipe (33) is recycled water tank (17) with condensed water and is communicated with.
7. the flue gas spray cleaning heat recovery system of gas fired-boiler as claimed in claim 6 and combustion gas, fuel oil equipment; It is characterized in that: the inner chamber of said secondary spray water tank (18) is placed with one-level waste heat recovery coil pipe (40); One end of said one-level waste heat recovery coil pipe (40) is communicated with demineralized water or running water; The other end is communicated with secondary waste heat recovery coil pipe (38); Connect demineralized water or on the said one-level waste heat recovery coil pipe (40) of water end (W.E.) second electric control valve (39) is installed from the beginning, the inner chamber that said condensed water is recycled water tank (17) is placed with secondary waste heat recovery coil pipe (38), and an end of said secondary waste heat recovery coil pipe (38) and one-level waste heat recovery coil pipe (40) or demineralized water, running water are communicated with; The other end is communicated with gas fired-boiler or combustion gas, fuel oil equipment feedwater or domestic hot-water; Connect demineralized water, on the said secondary waste heat recovery coil pipe (38) of water end (W.E.) the 3rd electric control valve (41) be installed from the beginning, said second and third electric control valve (39,41) is connected with control system (2) respectively.
8. the flue gas spray cleaning heat recovery system of gas fired-boiler as claimed in claim 7 and combustion gas, fuel oil equipment; It is characterized in that: said condensed water is recycled water tank (17) and is communicated with the one-level spray header (20) that is positioned between one-level spray water pump (21) and first water inlet pipe (13) through one-level spray evacuated tube (34); On the said one-level spray evacuated tube (34) the 4th electric control valve (35) is installed; Said secondary spray water tank (18) through secondary spray evacuated tube (36) be positioned at secondary and spray water pump (23) and be communicated with to the second secondary spray header (22) that spray between the water inlet pipe (14); On the said secondary spray evacuated tube (36) the 5th electric control valve (37) is installed; Said fourth, fifth electric control valve (35,37) is connected with control system (2) respectively.
9. the flue gas spray cleaning heat recovery system of gas fired-boiler as claimed in claim 8 and combustion gas, fuel oil equipment; It is characterized in that: said one-level shower water clarifier (15) connects through backwash water pipe (42) and running water and one-level spray header (20) is connected; Said first return water pipe (11) is gone up and is connected backwash return pipe (43); The other end of said backwash return pipe (43) is recycled water tank (17) with condensed water and is communicated with; Said condensed water is recycled water tank (17) and is communicated with backwash and replenishing water tank of water (44) through overflow pipe; Said backwash and replenishing water tank of water (44) are connected with running water, and said backwash and replenishing water tank of water (44) are communicated with the one-level spray header (20) that is positioned between condensed water recycling water tank (17) and the one-level spray water pump (21).
CN201220066871XU 2012-02-24 2012-02-24 Flue gas spraying purification and heat recovery system for gas-fired boilers and gas and oil burning devices Withdrawn - After Issue CN202511310U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201220066871XU CN202511310U (en) 2012-02-24 2012-02-24 Flue gas spraying purification and heat recovery system for gas-fired boilers and gas and oil burning devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201220066871XU CN202511310U (en) 2012-02-24 2012-02-24 Flue gas spraying purification and heat recovery system for gas-fired boilers and gas and oil burning devices

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102588989A (en) * 2012-02-24 2012-07-18 总装备部工程设计研究总院 Smoke spraying and purifying heat recovery system of gas boiler as well as gas and fuel oil burning device
CN103272453A (en) * 2013-05-22 2013-09-04 绍兴市立新印染有限公司 Energy saving and emission reduction type printing and dyeing three-waste treatment system and process thereof
CN113156049A (en) * 2021-05-08 2021-07-23 西安热工研究院有限公司 Flue gas moisture retrieves experimental apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102588989A (en) * 2012-02-24 2012-07-18 总装备部工程设计研究总院 Smoke spraying and purifying heat recovery system of gas boiler as well as gas and fuel oil burning device
CN102588989B (en) * 2012-02-24 2015-02-11 总装备部工程设计研究总院 Smoke spraying and purifying heat recovery system of gas boiler as well as gas and fuel oil burning device
CN103272453A (en) * 2013-05-22 2013-09-04 绍兴市立新印染有限公司 Energy saving and emission reduction type printing and dyeing three-waste treatment system and process thereof
CN113156049A (en) * 2021-05-08 2021-07-23 西安热工研究院有限公司 Flue gas moisture retrieves experimental apparatus

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