CN202581248U - Improved rotary hearth furnace flue gas waste heat boiler device - Google Patents

Improved rotary hearth furnace flue gas waste heat boiler device Download PDF

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Publication number
CN202581248U
CN202581248U CN2012202158872U CN201220215887U CN202581248U CN 202581248 U CN202581248 U CN 202581248U CN 2012202158872 U CN2012202158872 U CN 2012202158872U CN 201220215887 U CN201220215887 U CN 201220215887U CN 202581248 U CN202581248 U CN 202581248U
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China
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water
pass
burner hearth
cooling
panel casing
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CN2012202158872U
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Chinese (zh)
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王渭清
朱美昌
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中江能源回收(上海)有限公司
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Priority to CN2012202158872U priority Critical patent/CN202581248U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00Climate change mitigation technologies for sector-wide applications
    • Y02P80/10Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/15On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply

Abstract

The utility model relates to the technical field of utilization of waste heat, in particular to an improved rotary hearth furnace flue gas waste heat boiler device for development and utilization of vanadium titanium magnetite. The improved rotary hearth furnace flue gas waste heat boiler device is characterized in that a steam pocket is arranged on a steel frame above a flue type waste heat boiler; four hearth water-cooled wall upper headers, four rear flue water-cooled wall upper headers as well as a roof tube lower header are suspended below the steel frame; and the flue type waste heat boiler adopts a vertical flue type waste heat boiler structure consisting of a vertical hearth and a vertical rear flue. Compared with the prior art, the flue type waste heat boiler adopts a vertical flue structure, occupies space, saves land covering area and creates prospect for development of transforming or newly building a rotary hearth furnace device high-temperature flue gas waste heat recovery system. Structural arrangement of improved boiler water pipelines is adopted, so boiler water is naturally circulated by the weight difference, and the electricity additionally consumed by a boiler water circulating pump and high maintenance cost of the boiler water circulating pump are saved.

Description

A kind of improved rotary hearth furnace smoke and waste steam boiler device
Technical field
The utility model relates to the UTILIZATION OF VESIDUAL HEAT IN technical field, specifically a kind of a kind of improved rotary hearth furnace smoke and waste steam boiler device of vanadium titano-magnetite development and use.
Background technology
Rotary hearth furnace process is that begin suitability for industrialized production the external eighties with a kind of coal-based fast direct reducing technology, and China is digesting and assimilating on the basis of foreign technology, begins development in recent years and builds the rotary hearth furnace device.Rotary hearth furnace process adopts high temperature reduction; Produce 1100 ~ 1400 ℃ a large amount of high-temperature flue gas; Zinc-containing dust and carbon monoxide are arranged in the smoke components, mean that the rotary hearth furnace smoke and waste steam boiler of collecting high-temperature flue gas must possess following condition: one, high-temperature flue gas in the burner hearth of waste heat boiler again the burning function; Two, preventing to burn afterwards, the zinc-containing dust of high-temperature flue gas is bonded on the boiler tube again.
The rotary hearth furnace smoke and waste steam boiler generally adopts the flue type residual heat boiler at present; Be a kind of in order to recycle the water-tube boiler of various smoke discharging residual heats; Water or steam flow in the pipe of heat pipe; Flow in the flue of flue gas outside the heat pipe pipe, the outer surface of flue gas through washing away pipe is with water in the heat transferred pipe or steam.
The stove hydromining of existing rotary hearth furnace smoke and waste steam boiler is used the forced circulation mode; Need to make stove water circulation power with boiler water circulating pump 17; Additive decrementation electric power and boiler water circulating pump maintenance expense; Referring to Fig. 1~Fig. 3, this waste heat boiler adopts the horizontal flue structure, and the water-cooling wall 16 in its horizontal burner hearth adopts coiled pipe; The entrance end of coiled pipe welds former and later two collection casees 16-1 respectively; Be connected with boiler water circulating pump 17 1 time at drum, the pressurization through boiler water circulating pump 17 is sent into the stove water in the drum 1 respectively in the collection case of entrance point of water-cooling wall 16 in the inlet header case with evaporimeter 61, the stove moisture two-way that comes out from the inlet header case of evaporimeter 61; One the tunnel sends in the evaporimeter 61; Another road is sent in the inlet header case of another evaporimeter 6, and the high-temperature flue gas radiation in burner hearth of stove water in water-cooling wall 16 and the stove water in evaporimeter 61, convection current heat absorption become steam water interface, the steam water interface that comes out from the collection case of the port of export of water-cooling wall 16 and turn back to drum from the steam water interface that the outlet collection case of evaporimeter 61 comes out; The stove water that comes out in the inlet header case of another evaporimeter 6 divides two-way again; One the tunnel sends into the interior heat absorption evaporation of inlet header case of next group evaporimeter 62; Steam water interface is back to drum from the outlet collection case of next group evaporimeter 62; Another road is sent in another evaporimeter 6, and the stove water heat absorption in another evaporimeter 6 flashes to the outlet collection case of another evaporimeter 6 of steam water interface entering and delivers to drum again.Steam water interface is done carbonated drink separation in drum 1, the stove water after the separation sends into water-cooling wall 16 through boiler water circulating pump 17 again and evaporimeter 61 circulates once more, absorbs heat, evaporates; Isolated steam then gets in the superheater 4 in drum 1, and the steam after heating is seen off through pipeline.
Therefore, the rotary hearth furnace smoke and waste steam boiler that adopts at present is forced circulation, horizontal, horizontal channel structure mostly, does not satisfy the required special process needs that burn and prevent to bond of rotary hearth furnace high-temperature flue gas, and is all immature.And adopt the waste heat boiler of horizontal type structure, horizontal channel formula, the boiler of requirement is long, takes up an area of greatly, all can receive the restriction in place to rotary hearth furnace device or the new device that has built up.
Summary of the invention
The purpose of the utility model is for overcoming the deficiency of prior art, design a kind of vertical, Natural Circulation, have in the burner hearth again combustion function, the zinc-containing dust of the back high-temperature flue gas that prevents to burn again is bonded in the waste heat boiler of the vertical flue formula structure on the boiler tube.
For realizing above-mentioned purpose; Design a kind of improved rotary hearth furnace smoke and waste steam boiler device; Comprise flue type residual heat boiler, high temperature superheater, low temperature superheater, evaporimeter, low-level (stack-gas) economizer, high-temperature economizer, demineralized-water preheater, drum, steelframe, platform staircase and rapping apparatus, ash bucket that fin panel casing surrounds; It is characterized in that: on the steelframe above the flue type residual heat boiler, be provided with drum, suspention has four furnace wall cooling upper collecting chambers, four rear pass water-cooling wall upper collecting chambers and a roof tube next part case under steelframe; The flue type residual heat boiler adopts by vertical burner hearth and the vertical vertical flue type residual heat boiler structure that rear pass constituted; Be connected the delivery port of a furnace wall cooling next part case respectively with the fin panel casing bottom of four sides all around of the burner hearth of ash bucket junction; The top of the fin panel casing of the rear side of burner hearth connects the water inlet of back water-cooling wall upper collecting chamber set in the burner hearth; The delivery port of back water-cooling wall upper collecting chamber adopts roof tube to connect the water inlet of roof tube next part case; The rear end of the fin panel casing at the top of the delivery port connection burner hearth of roof tube next part case, the corresponding one to one respectively connection burner hearth top, fin panel casing top preceding, left and right side of the front end of the fin panel casing at the top of burner hearth and burner hearth is suspended to the water inlet of four furnace wall cooling upper collecting chambers under the steelframe; The rear pass all around bottom of the fin panel casing of four sides connects the delivery port of a rear pass water-cooling wall next part case respectively; The top of the fin panel casing of the front side of rear pass connects the water inlet of preceding water-cooling wall upper collecting chamber set in the rear pass; The delivery port of preceding water-cooling wall upper collecting chamber connects the bottom of another roof tube; The corresponding one to one respectively water inlet that connects four rear pass water-cooling wall upper collecting chambers in the top of the fin panel casing of the top of another roof tube and the top of rear pass, left and right side; In rear pass, also be provided with evaporimeter; Described evaporimeter is tilted to cross rear pass by evaporator tube row to be formed, and evaporator tube row's upper end is welded with the import of evaporimeter upper collecting chamber, the outlet of evaporator tube row's lower end welding evaporimeter next part case; The delivery port of the delivery port of four furnace wall cooling upper collecting chambers, four rear pass water-cooling wall upper collecting chambers and the outlet of evaporimeter upper collecting chamber adopt the carbonated drink fairlead to connect the water inlet of drum respectively; The delivery port of drum connects an end that is positioned at the outer down-comer of flue type residual heat boiler, and the other end of down-comer adopts branch to connect the water inlet of furnace wall cooling next part case, the water inlet of rear pass water-cooling wall next part case and the import of evaporimeter next part case respectively; Be provided with the gap between the pipe row of the fin panel casing at the top of burner hearth, the top suspension of high temperature superheater is after steelframe is following, and high temperature superheater passes the top that the roof of the furnace gap is positioned at burner hearth; Also be provided with the gap between the pipe row of the fin panel casing at the top of rear pass; The top suspension of low temperature superheater in steelframe down after, low temperature superheater passes the top that is positioned at rear pass behind the gap at rear pass top; The saturated vapor delivery outlet of drum connects the air intake of low temperature superheater, and the venthole of low temperature superheater connects the air intake of high temperature superheater, and the venthole of high temperature superheater connects hot user's import or power station.
The bottom of described burner hearth is that flue gas reburning burns the district, and the fin panel casing inboard of burning the burner hearth in district at flue gas reburning is provided with one deck zirconium matter cast bed of material.
Outer and the rear pass of the burner hearth of flue type residual heat boiler is coated with heat-insulation layer.
Outside the fin panel casing of burner hearth, also be provided with the ash disposal rapping apparatus.
Upper and lower part outside the fin panel casing of burner hearth four sides also is respectively equipped with secondary wind inlet and a wind inlet, and nearly bottom position is provided with gas approach in the front side of burner hearth.
The bottom of described rear pass also is provided with low-level (stack-gas) economizer, demineralized-water preheater successively, and the rear side of demineralized-water preheater is provided with exhanst gas outlet.
In the ash bucket that burner hearth bottom connected, be provided with high-temperature economizer.
The utility model is compared with prior art has following advantage:
1, the utility model flue type residual heat boiler is the vertical flue structure, captures to the space, saves the plane and takes up an area of, for prospect has been created in the development of transformation or newly-built rotary hearth furnace device high-temperature flue gas residual neat recovering system;
2, adopt to improve the structural configuration on furnace water pipe road, make stove water lean on self severe difference to carry out Natural Circulation, saved the electric power that uses boiler water circulating pump institute additive decrementation and the high maintenance of boiler water circulating pump;
3, adopt higher vertical furnace chamber, the flue gas reburning of burner hearth burns the fin panel casing liner chromium matter pours in district, can avoid the straight blown film formula of the thermal-flame water-cooling wall of CO burning generation, and can effectively prevent the bonding of zinc-containing dust flue gas;
4, the 2.5MPa of output, 400 ℃ time middle superheated steam of pressing promptly can be used for generating and also can be used for heat supply, has enlarged the scope of UTILIZATION OF VESIDUAL HEAT IN; Time middle pressure steam parameter has been avoided the temperature range of zinc-containing dust flue gas bonding high temperature furnace tube wall simultaneously;
5, the heating surface of vertical flue formula waste heat boiler props up through the top and hangs on the structure suspention steelframe, body of heater free wxpansion downwards, and good seal performance, structural safety is reliable.
Description of drawings
Fig. 1 is the structural representation of original horizontal flue type residual heat boiler, this not shown drum and boiler water circulating pump.
Fig. 2 is the structural representation of the water-cooling wall of original employing coiled pipe.
Fig. 3 is the side-looking structural representation of original horizontal flue type residual heat boiler.
Fig. 4 is the structural representation of the utility model.
Fig. 5 is an A-A cut-away view shown in Figure 4.
Fig. 6 is a B-B cut-away view shown in Figure 4.
Fig. 7 is the structural representation behind the removal heat-insulation layer among Fig. 3.
Referring to Fig. 4~Fig. 7,1 is drum; 2 is burner hearth; 2-1 is a gas approach; 3 is rear pass; 3-1 is a rear pass water-cooling wall next part case; 4 is low temperature superheater; 5 is high temperature superheater; 6 is evaporimeter; 6-1 is the evaporimeter upper collecting chamber; 6-2 is an evaporimeter next part case; 7 is low-level (stack-gas) economizer; 8 is high-temperature economizer; 9 is feed water preheater; 9-1 is an exhanst gas outlet; 10 are the ash disposal rapping apparatus; 11-2 is a down-comer; 11-3 is a furnace wall cooling next part case; 11-6 is the carbonated drink fairlead; 12 is a wind inlet; 13 are the secondary wind inlet; 14 are the zirconium matter cast bed of material; 15 is steelframe; 16 is fin panel casing; 17 is boiler water circulating pump; 18-1 is the furnace wall cooling upper collecting chamber; 18-2 is a rear pass water-cooling wall upper collecting chamber; 18-3 is a roof tube next part case; 18-4 is a back water-cooling wall upper collecting chamber; 18-5 is preceding water-cooling wall upper collecting chamber; 19 is heat-insulation layer.
The specific embodiment
Combine accompanying drawing that the utility model is done explanation further at present.
Embodiment 1
The flue type residual heat boiler changes the vertical flue type residual heat boiler of employing by the horizontal flue type residual heat boiler of original employing in the utility model; And the transformation of passing through the pipeline of stove water realizes the Natural Circulation of stove water; In order to cooperate the Natural Circulation of stove water; Vertical flue type residual heat boiler adopts fin panel casing to surround in the utility model, the monoblock tube panel that described fin panel casing is welded to each other together to be formed by some extended surface tubes side by side.
Distinguish the front and back position of each parts in the vertical flue type residual heat boiler in the utility model to the gas flow direction of exhanst gas outlet 9-1 with gas approach 2-1.
One, concrete structure:
Referring to Fig. 4~Fig. 7, on the steelframe above the flue type residual heat boiler 15, be provided with drum 1, suspention has four furnace wall cooling upper collecting chamber 18-1,4 rear pass water-cooling wall upper collecting chamber 18-2 and a roof tube next part case 18-3 under steelframe; The flue type residual heat boiler adopts the vertical flue type residual heat boiler structure that is made up of vertical burner hearth 2 and vertical rear pass 3; Be connected the delivery port of a furnace wall cooling next part case 11-3 respectively with fin panel casing 16 bottoms of four sides all around of the burner hearth 2 of ash bucket junction; The top of the fin panel casing of the rear side of burner hearth 2 connects the water inlet of back water-cooling wall upper collecting chamber 18-4 set in the burner hearth; The delivery port of back water-cooling wall upper collecting chamber 18-4 adopts roof tube to connect the water inlet of roof tube next part case 18-3; The rear end of the fin panel casing at the top of the delivery port connection burner hearth of roof tube next part case 18-3, the corresponding one to one respectively connection burner hearth top, fin panel casing top preceding, left and right side of the front end of the fin panel casing at the top of burner hearth and burner hearth 2 is suspended to the water inlet of four furnace wall cooling upper collecting chamber 18-1 under the steelframe; The rear pass all around bottom of the fin panel casing of four sides connects the delivery port of a rear pass water-cooling wall next part case 3-1 respectively; The top of the fin panel casing of the front side of rear pass connects the water inlet of preceding water-cooling wall upper collecting chamber 18-5 set in the rear pass; The delivery port of preceding water-cooling wall upper collecting chamber 18-5 connects the bottom of another roof tube; The corresponding one to one respectively water inlet that connects four rear pass water-cooling wall upper collecting chamber 18-2 in the top of the fin panel casing of the top of another roof tube and the top of rear pass, left and right side; In rear pass 3, also be provided with evaporimeter 6; Described evaporimeter 6 is tilted to cross rear pass by evaporator tube row to be formed, and evaporator tube row's upper end is welded with the import of evaporimeter upper collecting chamber 6-1, the outlet of evaporator tube row's lower end welding evaporimeter next part case 6-2; The delivery port of the delivery port of four furnace wall cooling upper collecting chamber 18-1, four rear pass water-cooling wall upper collecting chamber 18-2 and the outlet of evaporimeter upper collecting chamber 6-1 adopt carbonated drink fairlead 11-6 to connect the water inlet of drum 1 respectively; The delivery port of drum 1 connects an end that is positioned at the outer down-comer 11-2 of flue type residual heat boiler, and the other end of down-comer 11-2 adopts branch to connect the water inlet of furnace wall cooling next part case 11-3, the water inlet of rear pass water-cooling wall next part case 3-1 and the import of evaporimeter next part case 6-2 respectively; Be provided with the gap between the pipe row of the fin panel casing at the top of burner hearth, the top suspension of high temperature superheater 5 is after steelframe is following, and high temperature superheater 5 passes the top that the roof of the furnace gap is positioned at burner hearth; Also be provided with the gap between the pipe row of the fin panel casing at the top of rear pass; The top suspension of low temperature superheater 4 in steelframe down after, low temperature superheater 4 passes the top that is positioned at rear pass behind the gap at rear pass top; The saturated vapor delivery outlet of drum 1 connects the air intake of low temperature superheater 4, and the venthole of low temperature superheater 4 connects the air intake of high temperature superheater 5, and the venthole of high temperature superheater 5 is seen off to hot user's import or power station.High temperature superheater 5 all adopts panelized construction with low temperature superheater 4 in the utility model.
The bottom of described burner hearth is that flue gas reburning burns the district; The fin panel casing inboard of burning the burner hearth in district at flue gas reburning is provided with one deck zirconium matter cast bed of material 14; The high temperature that can avoid CO burning to produce is the straight blown film formula of flame water-cooling wall, and can prevent the bonding of zinc-containing dust flue gas effectively.
Outer and the rear pass of the burner hearth of flue type residual heat boiler is coated with heat-insulation layer 19.
Outside the fin panel casing of burner hearth four sides, also be provided with ash disposal rapping apparatus 10, be used for the fin panel casing of rapping burner hearth.Rapping is the pipe row who hits the diaphragm-vibrating type water-cooling wall through motor drives spring hammering device; Remove the dust on the fin panel casing that accumulates in burner hearth, dust falls into ash bucket and discharges body of heater through the star ash-valve, and deashing is easy like this; Be difficult for dust stratification, the possibility that does not exist dust stratification to put up a bridge.
Referring to Fig. 3, the upper and lower part outside the fin panel casing of burner hearth also is respectively equipped with 13 and wind inlets 12 of secondary wind inlet, and nearly bottom position is provided with gas approach 2-1 in the front side of burner hearth.Here a wind inlet 12 is used to insert the partial discharge flue gas, superfluous oxygen in the utilization discharging flue gas and the CO burning in the high-temperature flue gas; And secondary wind inlet 13 is used to insert cold air, regulates flue gas temperature of hearth outlet, protection high temperature superheater 5.
The bottom of described rear pass also is provided with low-level (stack-gas) economizer 7, demineralized-water preheater 9 successively, and the rear side of demineralized-water preheater is provided with exhanst gas outlet 9-1.In the ash bucket that burner hearth bottom connected, be provided with high-temperature economizer 8.Low-level (stack-gas) economizer 7 all adopts the coiled pipe coiling to form with high-temperature economizer in this example.
Two,
The operation principle of the utility model: the stove water that from drum 1, comes out gets into furnace wall cooling next part case 11-3, rear pass water-cooling wall next part case 3-1 and evaporimeter next part case 6-2 respectively through down-comer 11-2; The stove water that furnace wall cooling next part case 11-3 and rear pass water-cooling wall next part case 3-1 again will be separately then is assigned to respectively in each pipe of fin panel casing of burner hearth in each pipe with the fin panel casing of rear pass; Stove moisture in the evaporimeter next part case 6-2 is fitted in the evaporator tube row; And a large amount of high-temperature flue gas that get in the burner hearth from gas approach 2-1 can produce hyperthermia radiation to burner hearth; The interior stove water heat absorption generation steam water interface of fin panel casing of burner hearth is risen to respectively in the furnace wall cooling upper collecting chamber 18-1; The generation steam water interface rises to respectively in rear pass water-cooling wall upper collecting chamber 18-2 and the evaporimeter upper collecting chamber 6-1 and the stove water in stove water and the evaporimeter 6 in the fin panel casing of rear pass 3 is also because the effect of high-temperature flue gas is absorbed heat; Steam water interface in furnace wall cooling upper collecting chamber 18-1, rear pass water-cooling wall upper collecting chamber 18-2 and the evaporimeter upper collecting chamber 6-1 is got back in the drum 1 through carbonated drink fairlead 11-6 more then; Steam water interface is done the carbonated drink separation in drum 1 after; Isolated stove water circulates in the pipe through each fin panel casing of down-comer 11-2 entering more once more; After isolated saturated vapor is introduced into low temperature superheater 4 in drum 1, get into high temperature superheater 5 again; Generating hot user's import that 2.5MPa, 400 ℃ superheated steam send to power station generating or steam through pipeline through the back of heating once more of low temperature superheater 4 and high temperature superheater 8 like this supplies to use.In the utility model in the high temperature superheater 5 output parameter be 2.5MPa, 400 ℃ inferior middle pressure steam, be in order to have enlarged the scope of UTILIZATION OF VESIDUAL HEAT IN, to have made it promptly can be used for generating and also can be used for heat supply; This time middle pressure steam parameter has been avoided the temperature range of zinc-containing dust flue gas bonding high temperature tube wall simultaneously.
In sum; The characteristics of the rotary hearth furnace smoke and waste steam boiler in the utility model are: fin panel casing is formed the vertical flue structure; Have higher burner hearth and burner hearth flue gas reburning and burn the district; The straight blown converter thorax of the thermal-flame water-cooling wall of CO burning generation can be avoided, and the bonding of zinc-containing dust flue gas can be prevented effectively; The circulation of stove water is compared with the horizontal waste heat boiler of making stove water circulation power by boiler water circulating pump for Natural Circulation, has saved the high maintenance of the electric power and the boiler water circulating pump of additive decrementation; The vertical flue structure is captured to the space, saves the plane and takes up an area of, for prospect has been created in the development of transformation or newly-built rotary hearth furnace device high-temperature flue gas residual neat recovering system; Fin panel casing in the waste heat boiler of vertical chimney flue type; The high and low temperature superheater; High and low temperature economizer, evaporimeter, these heating surfaces of demineralized-water preheater all prop up through the top and hang on the structure suspention steelframe, make burner hearth free wxpansion downwards, good seal performance, and structural safety is reliable.

Claims (7)

1. improved rotary hearth furnace smoke and waste steam boiler device; Comprise flue type residual heat boiler, high temperature superheater, low temperature superheater, evaporimeter, low-level (stack-gas) economizer, high-temperature economizer, demineralized-water preheater, drum, steelframe, platform staircase and rapping apparatus, ash bucket that fin panel casing surrounds; It is characterized in that: on the steelframe above the flue type residual heat boiler (15), be provided with drum (1), suspention has four furnace wall cooling upper collecting chambers (18-1), 4 rear pass water-cooling wall upper collecting chambers (18-2) and a roof tube next part case (18-3) under steelframe; The flue type residual heat boiler adopts the vertical flue type residual heat boiler structure that is made up of vertical burner hearth (2) and vertical rear pass (3); Be connected the delivery port of a furnace wall cooling next part case (11-3) respectively with the fin panel casing of four sides all around (16) bottom of the burner hearth (2) of ash bucket junction; The top of the fin panel casing of the rear side of burner hearth (2) connects the water inlet of back water-cooling wall upper collecting chamber (18-4) set in the burner hearth; The delivery port of back water-cooling wall upper collecting chamber (18-4) adopts roof tube to connect the water inlet of roof tube next part case (18-3); The rear end of the fin panel casing at the top of the delivery port connection burner hearth of roof tube next part case (18-3), the corresponding one to one respectively connection burner hearth top, fin panel casing top preceding, left and right side of the front end of the fin panel casing at the top of burner hearth and burner hearth (2) is suspended to the water inlet of four the furnace wall cooling upper collecting chambers (18-1) under the steelframe; The rear pass all around bottom of the fin panel casing of four sides connects the delivery port of a rear pass water-cooling wall next part case (3-1) respectively; The top of the fin panel casing of the front side of rear pass connects the water inlet of preceding water-cooling wall upper collecting chamber (18-5) set in the rear pass; The delivery port of preceding water-cooling wall upper collecting chamber (18-5) connects the bottom of another roof tube; The corresponding one to one respectively water inlet that connects four rear pass water-cooling wall upper collecting chambers (18-2) in the top of the fin panel casing of the top of another roof tube and the top of rear pass, left and right side; In rear pass (3), also be provided with evaporimeter (6); Described evaporimeter (6) is tilted to cross rear pass by evaporator tube row to be formed; Evaporator tube row's upper end is welded with the import of evaporimeter upper collecting chamber (6-1), the outlet of evaporator tube row's lower end welding evaporimeter next part case (6-2); The outlet of the delivery port of the delivery port of four furnace wall cooling upper collecting chambers (18-1), four rear pass water-cooling wall upper collecting chambers (18-2) and evaporimeter upper collecting chamber (6-1) adopts carbonated drink fairlead (11-6) to connect the water inlet of drum (1) respectively; The delivery port of drum (1) connects an end that is positioned at the outer down-comer (11-2) of flue type residual heat boiler, and the other end of down-comer (11-2) adopts branch to connect the water inlet of furnace wall cooling next part case (11-3), the water inlet of rear pass water-cooling wall next part case (3-1) and the import of evaporimeter next part case (6-2) respectively; Be provided with the gap between the pipe row of the fin panel casing at the top of burner hearth, the top suspension of high temperature superheater (5) is after steelframe is following, and high temperature superheater (5) passes the top that the roof of the furnace gap is positioned at burner hearth; Also be provided with the gap between the pipe row of the fin panel casing at the top of rear pass; The top suspension of low temperature superheater (4) in steelframe down after, low temperature superheater (4) passes the top that is positioned at rear pass behind the gap at rear pass top; The saturated vapor delivery outlet of drum (1) connects the air intake of low temperature superheater (4), and the venthole of low temperature superheater (4) connects the air intake of high temperature superheater (5), and the venthole of high temperature superheater (5) connects hot user's import or power station.
2. a kind of improved rotary hearth furnace smoke and waste steam boiler device as claimed in claim 1 is characterized in that: the bottom of described burner hearth is that flue gas reburning burns the district, and the fin panel casing inboard of burning the burner hearth in district at flue gas reburning is provided with one deck zirconium matter cast bed of material (14).
3. a kind of improved rotary hearth furnace smoke and waste steam boiler device as claimed in claim 1 is characterized in that: the outer and rear pass of the burner hearth of flue type residual heat boiler is coated with heat-insulation layer (19).
4. a kind of improved rotary hearth furnace smoke and waste steam boiler device as claimed in claim 1 is characterized in that: outside the fin panel casing of burner hearth, also be provided with ash disposal rapping apparatus (10).
5. a kind of improved rotary hearth furnace smoke and waste steam boiler device as claimed in claim 1; It is characterized in that: the upper and lower part outside the fin panel casing of burner hearth four sides also is respectively equipped with a secondary wind inlet (13) and a wind inlet (12), and nearly bottom position is provided with gas approach (2-1) in the front side of burner hearth.
6. a kind of improved rotary hearth furnace smoke and waste steam boiler device as claimed in claim 1; It is characterized in that: the bottom of described rear pass also is provided with low-level (stack-gas) economizer (7), demineralized-water preheater (9) successively, and the rear side of demineralized-water preheater (9) is provided with exhanst gas outlet (9-1).
7. a kind of improved rotary hearth furnace smoke and waste steam boiler device as claimed in claim 1 is characterized in that: in the ash bucket that burner hearth bottom connected, be provided with high-temperature economizer (8).
CN2012202158872U 2012-05-14 2012-05-14 Improved rotary hearth furnace flue gas waste heat boiler device CN202581248U (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102635844A (en) * 2012-05-14 2012-08-15 中江能源回收(上海)有限公司 Boiler system using waste heat of flue gas of rotary hearth furnace
CN103063048A (en) * 2013-01-29 2013-04-24 北京世纪源博科技股份有限公司 Horizontal evaporative cooling flue for steelmaking electric furnace
CN104075581A (en) * 2014-03-28 2014-10-01 天壕节能科技股份有限公司 Copper smelting waste heat using boiler
CN104215073A (en) * 2013-06-04 2014-12-17 宁夏嘉翔自控技术有限公司 Conduction oil boiler system for waste heat utilization
CN105135898A (en) * 2015-09-21 2015-12-09 宝钢发展有限公司 Smoke energy cyclic utilization system of rotary hearth furnace
CN105402711A (en) * 2015-12-23 2016-03-16 哈尔滨锅炉厂有限责任公司 200MW super-high pressure no-reheat back-to-back boiler
CN105805725A (en) * 2016-05-06 2016-07-27 北京立化科技有限公司 Trapezoidal superheater
CN106524104A (en) * 2016-11-25 2017-03-22 中国石油天然气第八建设有限公司 Furnace hearth split large-tonnage fixed type superheated steam generator

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102635844A (en) * 2012-05-14 2012-08-15 中江能源回收(上海)有限公司 Boiler system using waste heat of flue gas of rotary hearth furnace
CN103063048A (en) * 2013-01-29 2013-04-24 北京世纪源博科技股份有限公司 Horizontal evaporative cooling flue for steelmaking electric furnace
CN104215073A (en) * 2013-06-04 2014-12-17 宁夏嘉翔自控技术有限公司 Conduction oil boiler system for waste heat utilization
CN104075581A (en) * 2014-03-28 2014-10-01 天壕节能科技股份有限公司 Copper smelting waste heat using boiler
CN105135898A (en) * 2015-09-21 2015-12-09 宝钢发展有限公司 Smoke energy cyclic utilization system of rotary hearth furnace
CN105402711A (en) * 2015-12-23 2016-03-16 哈尔滨锅炉厂有限责任公司 200MW super-high pressure no-reheat back-to-back boiler
CN105402711B (en) * 2015-12-23 2018-02-13 哈尔滨锅炉厂有限责任公司 200MW super-pressure leans against back type boiler without reheating
CN105805725A (en) * 2016-05-06 2016-07-27 北京立化科技有限公司 Trapezoidal superheater
CN105805725B (en) * 2016-05-06 2019-06-04 北京立化科技有限公司 Trapezoidal superheater
CN106524104A (en) * 2016-11-25 2017-03-22 中国石油天然气第八建设有限公司 Furnace hearth split large-tonnage fixed type superheated steam generator

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