CN104713075B - Coal-fired flue-gas residual heat recovery, reduction of discharging, ash disposal integrated apparatus and method - Google Patents
Coal-fired flue-gas residual heat recovery, reduction of discharging, ash disposal integrated apparatus and method Download PDFInfo
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- CN104713075B CN104713075B CN201510100618.XA CN201510100618A CN104713075B CN 104713075 B CN104713075 B CN 104713075B CN 201510100618 A CN201510100618 A CN 201510100618A CN 104713075 B CN104713075 B CN 104713075B
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Abstract
The invention discloses a kind of coal-fired flue-gas residual heat recovery, reduction of discharging, ash disposal integrated apparatus and method, comprise casing, casing has been divided into upper and lower two spaces by horizontal dividing plate, and top is cold fluid circulation space, i.e. boiler replenishing water free air space; Bottom is hot fluid circulation space, i.e. flue gas free air space; And in housing, be vertically provided with some heat-transfer pipes through dividing plate, the upper end of heat-transfer pipe is positioned at cold fluid circulation space, the lower end of heat-transfer pipe is positioned at the logical space of flow of heated fluid, the heat in flue gas is passed to boiler replenishing water by heat-transfer pipe, boiler replenishing water temperature is sent into boiler after raising, and realizes flue gas heat recovery; Simultaneously in the time that the temperature of flue gas drops to the dew point of flue gas, so in flue gas3Generate sulfuric acid with the water vapour in flue gas, stick on cigarette ash, discharge with cigarette ash, reduced the sulfur content of flue gas, reached desulfurization object; And the automatic ash removing unit that heat-transfer pipe is cleared up and the temperature control equipment that the wall temperature of casing is controlled are installed on casing.
Description
Technical field
The present invention relates to be in operation and can effectively reduce discharging coal-fired flue-gas heat recycling device and the side of sulfur trioxide tool dusting functionMethod, is specifically related to a kind of coal-fired flue-gas heat recycling device, and this device, in reaching degree of depth heat recovery, is sloughed absolutelySulfur trioxide in most of flue gas and unite after big dust particle, reduce discharge of poisonous waste; Equipment fume side adopts nanometerEssence coating technique, when efficient corrosion resisting and do not affect heat exchange efficiency; This device is in operation can automatic ash-removing.
Background technology
Exhaust gas temperature, lower than the easy dewing corrosion of flue gas acid dew point, is controlled at 150 DEG C at coal-burning boiler and kiln exhaust gas temperature in serviceLeft and right, some exhaust gas temperatures, even up to 300 DEG C, have caused a large amount of thermal waste; In flue gas desulfurization course, in order to improveDesulfuration efficiency, must, to entering desulfurizing tower after high-temperature flue gas spraying cooling again, not only consume a large amount of water power, and increaseThe construction cost of desulfurizing tower.
The main cause that coal-burning boiler cigarette temperature can not be crossed low emission has:
1. cigarette temperature too low (lower than dew point), the sulfide in flue gas forms sulfuric acid, and sulfurous acid, causes seriously heat recycling deviceCorrosion can cause very serious ash stifled to device simultaneously, and cigarette ash sticks on heat-transfer pipe, is difficult to remove, and directly affects deviceContinuous and steady operation.
2. because the heat transfer coefficient of flue gas is little, want to obtain lower exhaust gas temperature, can only increase the heat exchange area of device, waste heatReclamation set volume is large, and cost is high.
Summary of the invention
The object of the present invention is to provide a kind of device of can the degree of depth recycling coal-fired flue-gas waste heat; Normally in service at deviceEnergy automatic ash-removing; Adopt nanometer essence coating technique to make device avoid corrosion; There is good emission reduction effect. Guarantee integrated apparatus continuously,Stable, efficiently operation. Can solve coal-burning boiler high fume temperature in background technology, heat utilization rate low, build desulfurizing tower costAsh huge and operation timer is stifled, cold end corrosion and volume large, the problem that cost is high.
Technical scheme of the present invention is:
Coal-fired flue-gas residual heat recovery, reduction of discharging, ash disposal integrated apparatus, comprise a casing, and described casing is by horizontal dividing plateBe divided into upper and lower two spaces, top is cold fluid circulation space, i.e. boiler replenishing water free air space; Bottom is hot fluid circulation space,It is flue gas free air space; And vertically in casing be provided with some heat-transfer pipes through dividing plate, the upper end of heat-transfer pipe is positioned at cold fluid flowLogical space, the lower end of heat-transfer pipe is positioned at the logical space of flow of heated fluid, and on casing, be provided with a set of heat-transfer pipe is cleared up fromMoving ash disposal unit and the temperature control unit that the wall temperature of casing is controlled.
Flue gas is introduced to the bottom of coal-fired flue-gas heat recycling device, boiler replenishing water is introduced to the upper of coal-fired flue-gas heat recycling devicePortion, the heat of flue gas is absorbed by heat-transfer pipe, and heat passes to top again by the bottom of heat-transfer pipe; What circulated in top is boiler supplyWater, water absorbs the heat that heat-transfer pipe transmits in the process of circulation, and heat-transfer pipe passes to boiler feedwater continuously the heat energy of flue gas;Boiler replenishing water temperature is sent into boiler after raising, and the in the situation that of same load, saves steam coal, reaches flue gas waste heat recovery profitWith object.
Because the heat energy of flue gas has passed to boiler feedwater through coal-fired flue-gas heat recycling device, the temperature of flue gas has reduced. WhenCigarette temperature drop is during to the dew point of flue gas, and the water vapour in sulfide and flue gas in flue gas generates sulfuric acid and sulfurous acid, sticks to flue gasOn dust granules thing, cigarette ash is united, thereby a large amount of harmful substances such as dust, sulfide is discharged with cigarette ash, reduced cigaretteHarmful substance contents in gas, reaches the object of reduction of discharging.
Described heat-transfer pipe comprises the heat transfer medium in a housing and housing, described heat-transfer pipe will according to application environment andThe parameter of cold fluid and hot fluid is calculated through science, selects corresponding ND steel or 20G case material.
The size of described heat-transfer pipe is mainly the size according to thermic load, and the parameter of cold and hot fluid is calculated really through scienceFixed; To meet the needs of thermic load, also will have larger heat transfer coefficient simultaneously and make cold and hot fluid have less flow resistance;To obtain economic benefit.
For flue gas and heated medium are kept apart, coal-fired flue-gas heat recycling device is equipped with dividing plate, makes flue gas with heatedMedium is kept apart, and ensures not channelling; Dividing plate plays the effect of fixing heat exchange element simultaneously, and heat exchange element is formed as requestedCorresponding passage.
On described casing, be provided with the cold fluid that is connected with cold fluid circulation space into and out of pipe and with hot fluid circulation spaceThe hot fluid being connected is into and out of pipe.
Described temperature control equipment comprises two valves of controlling boiler replenishing water flows, and one is arranged at the front end of casing and with coldFluid inlet tube is communicated with, and another is arranged at the rear end of casing and goes out pipe with cold fluid and is communicated with; Be in operation, as cigarette temperature rise or cigaretteWhen tolerance increases, wall temperature raises, and wall temperature control device is opened large cold fluid imported valve automatically, increases cold fluid flow, to obtainMaximum heat recovery effect. Be in operation in the time that cigarette temperature drop is low or exhaust gas volumn reduces, too low for preventing wall temperature, wall temperature controlDevice processed turns down fluid inlet valve automatically, reduces cold fluid and enters coal-fired flue-gas heat recycling device, makes wall temperature be stabilized in designIn the number range requiring.
Cold and hot fluid inlet/outlet pipe is also housed on described casing.
Described automatic ash-removing unit comprises wire brush lifting supporting plate, dedusting wire brush, elevating screw and a drive motors, instituteThe wire brush lifting supporting plate position corresponding with each heat-transfer pipe of stating is equipped with a dedusting wire brush, and wire brush lifting supporting plate withNut on elevating screw is fixed together, and described elevating screw rotates under the driving of drive motors; At the bottom of described casingPortion be provided with one with the ash bucket of its internal communication, described ash bucket bottom is wind stopping device, is in operation, wind stopping device can be discharged ash at any timeDust in bucket.
An elevating screw of the each installation in two ends of described wire brush lifting supporting plate, each described elevating screw is by a pair of commutationGear is connected with drive motors.
The upper limit, the lower position place of described wire brush lifting supporting plate operation are all provided with travel switch.
The using method of coal-fired flue-gas residual heat recovery, reduction of discharging and ash disposal is as follows:
First boiler feedwater is guided in coal-fired flue-gas heat recycling device, then the flue gas that coal-burning boiler afterbody is discharged is incorporated into combustionIn flue-gas heat recycling device, boiler feedwater absorbs the heat energy of flue gas by heat-transfer pipe, and boiler feedwater temperature raises, enthalpyValue increases, and then sends into boiler, reduces coal quantity of boiler, realizes boiler energy-saving; Because the thermal energy transfer of flue gas has been given boilerMake-up water, the temperature of flue gas reduces; When the temperature of flue gas is reduced to dew point, the sulfide in flue gas and water vapour generate sulfuric acid andSulfurous acid sticks on soot particulates, and cigarette ash is united, thereby makes the nuisances such as a large amount of dust, sulfide, mercury, Pm2.5Matter is discharged with cigarette ash, reduces harmful substances from flue gases discharge capacity, reaches the object of reduction of discharging.
In the time that the dust stratification on heat-transfer pipe affects heat transfer efficiency, two motors rotate simultaneously, by tumbler gear, and elevating screw rotationCarry out ash disposal. Nut on elevating screw and wire brush lifting supporting plate are fixed together, and wire brush lifting supporting plate is with lifting silkThe rotation of thick stick, moves up. Each heat-transfer pipe that wire brush lifting supporting plate is corresponding is equipped with dedusting wire brush.
The upper limit, the lower position place of the operation of wire brush lifting supporting plate are all provided with travel switch, when wire brush lifting supporting plate is together with dedustingWire brush moves to upper limit position, touches upper limit travel switch, motor reversal, and wire brush lifting supporting plate is together with dedusting wire brushMove down, in the time touching limit switch, motor reverses equally again, and wire brush lifting supporting plate together with dedusting wire brush more upwardsMobile. Several times reciprocal like this, just the dust stratification being deposited on heat transfer element is disposed. Dust stratification drops into bottom ash bucket, through closing windDevice is emitted ash.
Described heat-transfer pipe is through the preservative treatment of nanometer essence coating technique. Heat-transfer pipe energy acid-alkali-corrosive-resisting after treatment, even cigarette temperatureBeing down to the following heat-transfer pipe of dew point also can not damage. Coal-fired flue-gas temperature is reduced to dew point, there is good reduction of discharging function and effect.
Described automatic ash-removing unit, can dispose the cigarette ash sticking on heat transfer element, guarantees the continuous and steady operation of device.
Beneficial effect of the present invention is as follows:
1. improve heat utilization rate, 10 DEG C of the every reductions of cigarette temperature, heat utilization rate improves 1%. Coal-fired flue-gas temperature is reduced to 80 DEG CEven lower, realize the flue-gas temperature degree of depth and recycled, reach the discharge of flue gas ultralow temperature, thereby recycle more flue gasThermal energy.
2. heat recovery device is reasonable in design, advanced technology, and the coefficient of heat transfer is large, and floor space is little, and cost is low.
3. device adopts nanometer essence coating technique, makes device avoid acid and alkali corrosion, has ensured the enforcement of flue gas ultralow temperature draining technology.
4. the present invention not only can remove and be difficult to the cigarette ash of knot on heat exchange element of removing with high-pressure blast and water under high pressure, and in operationIn just can automatically remove.
5. cigarette temperature can drop to 80 DEG C even lower, causes the harmful substance in flue gas to be adsorbed by cigarette ash, is collected with cigarette ash.
6. the present invention has the integrated synthesis function of residual heat recovery and automatic dust out, reduction of discharging harmful substance.
Brief description of the drawings
The front view of Fig. 1 apparatus of the present invention;
The side view of Fig. 2 apparatus of the present invention;
In figure: 1 casing, 2 cold junction heat-transfer pipes, 3 dividing plates, 4 travel switch A, 5 hot junction heat-transfer pipes, 6 elevating screws, 7 dedusting steel wiresBrush, 8 wire brush lifting supporting plates, 9 travel switch B, 10 drive motors, 11 lead screw shaft bearings, 12 wind closing type dust exhaustors, 13 dustsOutlet, 14 smoke gas flow entrances, 15 boiler replenishing water entrances, 16 boiler replenishing water outlets, 17 smoke gas flow outlets.
Detailed description of the invention
Coal-fired flue-gas residual heat recovery, reduction of discharging, ash disposal integrated apparatus, comprise a casing 1, and described casing 1 is by horizontalDividing plate 3 has been divided into upper and lower two spaces, and top is cold fluid circulation space, i.e. boiler replenishing water free air space, and boiler replenishing water is from potStove moisturizing entrance 15 enters, from boiler replenishing water outlet 16 out; Bottom is hot fluid circulation space, i.e. flue gas free air space;Flue gas enters from smoke gas flow entrance 15, flow out from smoke gas flow outlet 17, and casing 1 interior vertical be provided with some through dividing plates 3Heat-transfer pipe, it is empty that cold junction heat-transfer pipe 2 is positioned at cold fluid circulation, hot junction heat-transfer pipe 5 is positioned at hot fluid circulation space, and at casingThe temperature control equipment that a set of automatic ash-removing unit that heat-transfer pipe is cleared up is installed on 1 and the wall temperature of casing is controlled.
First boiler replenishing water is introduced to the top of coal-fired flue-gas heat recycling device, then flue gas is introduced to coal-fired flue-gas heat recycling deviceBottom, the heat of flue gas is absorbed by heat-transfer pipe, heat passes to top again by the bottom of heat-transfer pipe; What flowed on top is that boiler is mendedFeed water, in the process of flowing through, absorb the heat of heat-transfer pipe, just given boiler supply the thermal energy transfer of flue gas through heat-transfer pipe like thisWater; The boiler of making a gift to someone after boiler replenishing water temperature raises, the in the situation that of same load, has saved steam coal, has reached more than flue gasThe object that recuperation of heat utilizes.
Because the heat energy of flue gas has passed to boiler feedwater through coal-fired flue-gas heat recycling device, the temperature of flue gas has reduced. WhenCigarette temperature drop is during to the dew point of flue gas, and the water vapour in sulfide and flue gas in flue gas generates sulfuric acid and sulfurous acid, sticks to cigarette ashUpper, discharge with cigarette ash, reduce the discharge of poisonous waste amount in flue gas, reach the object reducing discharging.
Heat-transfer pipe comprises the heat transfer medium in a housing and housing, and described heat-transfer pipe will be according to environment and the hot and cold stream of applicationThe parameter of body is calculated through science, selects corresponding ND steel or 20G case material.
The size of heat-transfer pipe is mainly the size according to thermic load, and the parameter of cold and hot fluid is calculated and determined through science; ?Meet the needs of thermic load, also will obtain the flow resistance that economic heat transfer coefficient and cold and hot fluid are less simultaneously; Hot junction is longDegree is 3:1 with the ratio of cold junction length.
For flue gas and heated medium are kept apart, coal-fired flue-gas heat recycling device is equipped with dividing plate 3, makes flue gas and is addedThermal medium is kept apart, and ensures not channelling; Dividing plate plays the effect of fixing heat exchange element simultaneously, makes heat exchange element group as requestedBecome corresponding runner.
In order to control the cold end corrosion of fume afterheat device, at front end and the end of low-temperature flue gas waste heat retracting device, two jacket walls are housedTemperature control device. Be in operation, during as cigarette temperature rise or exhaust gas volumn increase, wall temperature raises, and wall temperature control device is opened cold greatly automaticallyFluid inlet valve, increases cold fluid flow, to obtain maximum heat recovery effect. Be in operation when cigarette temperature drop low orWhen exhaust gas volumn reduces, too low for preventing wall temperature, wall temperature control device turns down fluid inlet valve automatically, reduces cold fluid and enters combustionFlue-gas heat recycling device, is stabilized in the scope of designing requirement wall temperature.
Cold and hot fluid inlet/outlet pipe is also housed on described casing.
Described automatic ash-removing unit comprises wire brush lifting supporting plate 8, dedusting wire brush 7, elevating screw 6 and a drive motors10, described be positioned at corresponding with each heat-transfer pipe of wire brush lifting supporting plate is equipped with a dedusting wire brush 7, and wire brush literThe nut falling on supporting plate and elevating screw 6 is fixed together, and described elevating screw 6 is arranged in lead screw shaft bearing 11, is drivingUnder the driving of moving motor 10, rotate; Be provided with in described casing 1 bottom one with the ash bucket of its internal communication, the unloading of described ash bucketTepetate opens or closes under the effect of unloading dirt cylinder. Being provided with one at described bottom half arranges with the wind closing type of its internal communicationDirt device 12, the tepetate that unloads of described wind closing type dust exhaustor 12 opens or closes under the effect of unloading dirt cylinder.
An elevating screw 6 of the each installation in two ends of described wire brush lifting supporting plate, each described elevating screw 6 is by a pair ofTumbler gear is connected with drive motors.
The upper limit, the lower position place of the operation of wire brush lifting supporting plate are provided with travel switch 4A and travel switch 9B.
Operation principle of the present invention is as follows:
The flue gas that boiler tail is discharged is incorporated into coal-fired flue-gas heat recycling device, and boiler feedwater is also guided to more than coal-fired flue-gasHot reclamation set, boiler feedwater, in coal-fired flue-gas heat recycling device, absorbs the heat energy of flue gas by heat-transfer pipe, and boiler is mendedFeed temperature raises, and enthalpy increases, and then sends into boiler, saves steam coal. Because the thermal energy transfer of flue gas has been given boilerMake-up water, the temperature of flue gas reduces. When the thermal energy transfer of flue gas has been given boiler feedwater, the temperature of flue gas drops to the dew point of flue gasTime, the sulfide in flue gas and water vapour generate sulfuric acid and stick on cigarette ash, discharge with cigarette ash, have reduced the nuisance in flue gasMatter discharge capacity, has reached the effect reducing discharging.
When there being dust stratification on heat-transfer pipe, while affecting heat transfer efficiency, two motors rotate simultaneously, and by tumbler gear, elevating screw revolvesTurn, the nut on elevating screw and wire brush lifting supporting plate are fixed together, wire brush lifting supporting plate revolving with elevating screwTurn, move up. The corresponding each heat-transfer pipe of wire brush lifting supporting plate is equipped with dedusting wire brush.
There is travel switch at the upper limit, the lower position place of the operation of wire brush lifting supporting plate, when wire brush lifting supporting plate is together with dedusting steelSilk brush moves to upper limit position, touches upper limit travel switch, motor reversal, wire brush lifting supporting plate together with dedusting wire brush toLower movement, in the time touching limit switch, motor reverses equally again, and wire brush lifting supporting plate upwards moves together with dedusting wire brush againMoving. Several times reciprocal like this, just the dust stratification being deposited on heat exchange element is disposed. Dust stratification drops into bottom ash bucket, when needs are putWhen ash, unload dirt cylinder and open and unload dirt lid, ash is emitted from dust export 13. Ash put clean after, unload dirt cylinder and close again and unload dirt lid.
Heat-transfer pipe is through the preservative treatment of nanometer essence coating technique, and heat-transfer pipe after treatment can acid-alkali-corrosive-resisting.
When the temperature of flue gas is reduced to dew point, the sulfide in flue gas and water vapour generate sulfuric acid and sulfurous acid sticks to soot particulatesUpper, cigarette ash is united, thereby the harmful substances such as a large amount of dust, sulfide, mercury, Pm2.5 are discharged with cigarette ash, reduce cigaretteDischarge of poisonous waste amount in gas, reaches the object of reduction of discharging.
Automatic ash-removing unit, is in operation and the cigarette ash sticking on heat transfer element can be disposed automatically, and it is continuous not affect deviceOperation. Make device remain high-efficiency operation.
Claims (8)
1. coal-fired flue-gas residual heat recovery, reduction of discharging, ash disposal integrated apparatus, is characterized in that: comprise a casing, described casing has been divided into upper and lower two spaces by horizontal dividing plate, and upper space is cold fluid circulation space, i.e. boiler replenishing water free air space; Lower space is hot fluid circulation space, i.e. flue gas free air space; And in casing, be vertically provided with some heat-transfer pipes through dividing plate, the upper end of heat-transfer pipe is positioned at cold fluid circulation space, the lower end of heat-transfer pipe is positioned at the logical space of flow of heated fluid, the heat in flue gas is passed to boiler replenishing water by described heat-transfer pipe, boiler replenishing water temperature is sent into boiler after raising, and realizes flue gas heat recovery; Simultaneously in the time that the temperature of flue gas drops to the dew point of flue gas, the SO in flue gas3Generate sulfuric acid with the water vapour in flue gas, stick on cigarette ash, discharge with cigarette ash; And the temperature control equipment that a set of automatic ash-removing unit that heat-transfer pipe is cleared up is installed on casing and the wall temperature of casing is controlled;
Described temperature control equipment comprises two valves of controlling boiler replenishing water flow, and one is arranged at the front end of casing and is communicated with cold fluid inlet pipe, and another is arranged at the rear end of casing and goes out pipe with cold fluid and is communicated with; When cigarette temperature rise or exhaust gas volumn increase, wall temperature raises, and wall temperature control device is opened large cold fluid imported valve automatically, increases cold fluid flow; In the time that cigarette temperature drop is low or exhaust gas volumn reduces, wall temperature control device turns down fluid inlet valve automatically, reduces cold fluid and enters coal-fired flue-gas heat recycling device;
Described automatic ash-removing unit comprises wire brush lifting supporting plate, dedusting wire brush, elevating screw and a drive motors, described be positioned at corresponding with each heat-transfer pipe of wire brush lifting supporting plate is equipped with a dedusting wire brush, and the nut on wire brush lifting supporting plate and elevating screw is fixed together, described elevating screw rotates under the driving of drive motors; Described bottom half be provided with one with the wind stopping device ash-discharging device of its internal communication.
2. coal-fired flue-gas residual heat recovery as claimed in claim 1, reduction of discharging, ash disposal integrated apparatus, it is characterized in that: an elevating screw of the each installation in two ends of described wire brush lifting supporting plate, each described elevating screw is connected with drive motors by a pair of tumbler gear.
3. coal-fired flue-gas residual heat recovery as claimed in claim 1, reduction of discharging, ash disposal integrated apparatus, is characterized in that: there is travel switch at the upper limit, the lower position place of described wire brush lifting supporting plate operation.
4. coal-fired flue-gas residual heat recovery as claimed in claim 1, reduction of discharging, ash disposal integrated apparatus, is characterized in that: described heat-transfer pipe comprises a housing and be located at the heat transfer medium in housing, and described heat-transfer pipe will select and adopt ND steel or 20G case material.
5. coal-fired flue-gas residual heat recovery as claimed in claim 1, reduction of discharging, ash disposal integrated apparatus, is characterized in that: the ratio of the hot end length of described heat-transfer pipe and cold junction length is 3:1.
6. coal-fired flue-gas residual heat recovery as claimed in claim 1, reduction of discharging, ash disposal integrated apparatus, is characterized in that: the cold fluid being connected with cold fluid circulation space is installed on described casing into and out of the hot fluid of managing and be connected with hot fluid circulation space into and out of pipe.
7. the method for utilizing the device as described in as arbitrary in claim 1-6 to carry out coal-fired flue-gas residual heat recovery, desulfurization, ash disposal, it is characterized in that: the cold fluid circulation space of boiler replenishing water being introduced to described coal-fired flue-gas residual heat recovery, desulfurization ash handling equipment, flue gas is introduced to the hot fluid circulation space of described device, the heat of flue gas passes to the lower end of heat-transfer pipe, and heat passes to upper end again by the lower end of heat-transfer pipe; Boiler feedwater flow through heat-transfer pipe the heat absorption of flue gas and by temperature raise after boiler feedwater send into boiler, realize flue gas heat recovery; Simultaneously the temperature of flue gas reduces, when cigarette temperature drop is during to the dew point of flue gas, and the SO in flue gas3Generate sulfuric acid with the water vapour in flue gas, stick on cigarette ash, discharge with cigarette ash, reduced the sulfur content of flue gas, reached the object of desulfurization; When there being dust stratification on heat-transfer pipe, two motors rotate simultaneously, rotate by elevating screw, realize moving up of wire brush lifting supporting plate, and then realize the ash disposal to heat-transfer pipe by the dedusting wire brush of corresponding each heat-transfer pipe.
8. utilize method as claimed in claim 7, it is characterized in that, as follows:
When wire brush lifting supporting plate moves to upper limit position together with dedusting wire brush, touch upper limit travel switch, motor reversal, wire brush lifting supporting plate moves down together with dedusting wire brush, in the time touching limit switch, motor reverses equally again, and wire brush lifting supporting plate moves up together with dedusting wire brush again; Several times reciprocal like this, just the dust stratification being deposited on heat exchange element is disposed; Dust stratification drops into bottom wind stopping device, and ash is discharged.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510100618.XA CN104713075B (en) | 2015-03-06 | 2015-03-06 | Coal-fired flue-gas residual heat recovery, reduction of discharging, ash disposal integrated apparatus and method |
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| CN201510100618.XA CN104713075B (en) | 2015-03-06 | 2015-03-06 | Coal-fired flue-gas residual heat recovery, reduction of discharging, ash disposal integrated apparatus and method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3028563A1 (en) * | 1979-07-30 | 1981-02-12 | Toyo Engineering Corp | HEATING BOILER |
| CN202008153U (en) * | 2011-04-11 | 2011-10-12 | 广西志远节能环保设备有限公司 | Waste heat recovery device of boiler flue gas |
| CN102620578A (en) * | 2012-01-17 | 2012-08-01 | 代树明 | Novel flue gas waste heat recycling device |
| CN102721287A (en) * | 2012-06-12 | 2012-10-10 | 大连易世达新能源发展股份有限公司 | Single-pressure ore-smelting furnace waste heat boiler with mechanical brush ash removal devices |
-
2015
- 2015-03-06 CN CN201510100618.XA patent/CN104713075B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3028563A1 (en) * | 1979-07-30 | 1981-02-12 | Toyo Engineering Corp | HEATING BOILER |
| CN202008153U (en) * | 2011-04-11 | 2011-10-12 | 广西志远节能环保设备有限公司 | Waste heat recovery device of boiler flue gas |
| CN102620578A (en) * | 2012-01-17 | 2012-08-01 | 代树明 | Novel flue gas waste heat recycling device |
| CN102721287A (en) * | 2012-06-12 | 2012-10-10 | 大连易世达新能源发展股份有限公司 | Single-pressure ore-smelting furnace waste heat boiler with mechanical brush ash removal devices |
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