CN105953248B - A kind of heater for rolling steel residual neat recovering system - Google Patents
A kind of heater for rolling steel residual neat recovering system Download PDFInfo
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- CN105953248B CN105953248B CN201610465873.9A CN201610465873A CN105953248B CN 105953248 B CN105953248 B CN 105953248B CN 201610465873 A CN201610465873 A CN 201610465873A CN 105953248 B CN105953248 B CN 105953248B
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- flue
- valve
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- valve plate
- drum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J11/00—Devices for conducting smoke or fumes, e.g. flues
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/16—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being hot liquid or hot vapour, e.g. waste liquid, waste vapour
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J13/00—Fittings for chimneys or flues
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2213/00—Chimneys or flues
- F23J2213/70—Safety arrangements
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a kind of heater for rolling steel residual neat recovering system, belong to residual neat recovering system, its structure includes flue side wall, major-minor flue dividing wall, air conservation pipe group, air preheater, gas preheater and furnace pressure automatic regulating valve, flue is provided with road side wall, flue is divided into anterior flue, middle part flue and rear portion flue, middle part flue is divided into flue collector and auxillary flue, the resistance to material structure of flue is provided with flue side wall, one-level evaporator is provided with anterior flue, high-temperature flue gas automatic shunt valve and secondary evaporimeter are disposed with described auxillary flue, one-level evaporator, cooling medium used in secondary evaporimeter and high-temperature flue gas automatic shunt valve is arranged in parallel, turnover pipeline is connected with drum respectively, drum is also connected with outer for jet chimney and drum feed pipe.The present invention, which has, solves the safe for operation of former residual neat recovering system, compact-sized, insulation and good seal performance, reclaims the features such as waste heat of flue gas of heating furnace to greatest extent.
Description
Technical field
The present invention relates to a kind of residual neat recovering system, especially a kind of heater for rolling steel residual neat recovering system.
Background technology
In recent years, the situation is tense for steel market, and steel rolling mill is generally in the edge of meagre profit or loss.Further to reduce
Process energy consumption and process cost, we have carried out detailed analysis to it, find certain improvement in terms of energy resource consumption be present
Space.Particularly our factory heating furnace is normal reheating furnace, because hot charging rate and hot charging temperature are all higher（Hot charging rate >=95%, hot charging
Temperature is at 760~830 DEG C）, exhaust gas temperature is also higher, also has certain potentiality in fume afterheat use aspects.
Through to stove Zhuan Kuang ﹑ thermal technology being grasped to domestic relevant manufacturers investigation, consultant expert, access relevant information and by scene
Make and measure and production system situation comprehensive survey, discovery have the following aspects to need to improve：
（1）Every heating furnace maximum exhaust gas volumn：80000Nm3/ h, exhaust gas temperature~435 DEG C after Air and gas heater
Left and right.According to smoke evacuation system drag evaluation, exhaust gas temperature~300 DEG C can be to ensure heating furnace just after Air and gas heater
Often production, therefore, this 100 DEG C flue gas heat is such as reclaimed, and recovering energy source, produces distinct economic.
（2）From the point of view of the present situation of our factory, limited by order, less than 60%, heating furnace is in operating rate of rolling mill often
Empty burning state without steel billet, even if smoke pre-heating air, coal gas can not also bring benefits, that is, occur it is so-called " circulate without
Ji "；If on the contrary, the waste heat of flue gas is produced into steam through evaporator is incorporated to pipe network, obvious economic benefit can be produced, particularly
Heating Season, steam price reach more than 140 yuan/ton, and producing steam with evaporator takes out than preheated air, the more effective benefit of coal gas,
Society need can more be met.
The content of the invention
The technical assignment of the present invention is to provide a kind of heater for rolling steel waste heat recovery for above-mentioned deficiency of the prior art
System, a kind of heater for rolling steel residual neat recovering system have and solve the safe for operation of former residual neat recovering system, and structure
Compact, insulation and good seal performance, heating furnace cigarette can be reclaimed to greatest extent in the case where not influenceing the operating condition of original heating furnace
Gas waste heat, there is the characteristics of good economic benefit.
The technical solution adopted for the present invention to solve the technical problems is：It include flue side wall, major-minor flue dividing wall,
Air conservation pipe group, air preheater, gas preheater and furnace pressure automatic regulating valve, cigarette is provided with described flue side wall
Road, flue are divided into anterior flue, middle part flue and rear portion flue, and described major-minor flue dividing wall is arranged in the flue of middle part,
Middle part flue is divided into flue collector and auxillary flue, described air conservation pipe group, air preheater and gas preheater are before
The direction of portion's flue toward rear portion flue is set in turn in flue collector, and described furnace pressure automatic regulating valve is arranged on to be connected with chimney
In the rear portion flue connect, the resistance to material structure of flue is provided with described flue side wall, is provided with described anterior flue
One-level evaporator, the direction of described auxillary flue interior edge front portion flue toward rear portion flue are disposed with high-temperature flue gas automatic shunt
Valve and secondary evaporimeter, described one-level evaporator, secondary evaporimeter and high-temperature flue gas automatic shunt valve are arranged in parallel, and one-level is steamed
Hair device, secondary evaporimeter and the recirculated water turnover pipeline of high-temperature flue gas automatic shunt valve end are connected with drum respectively, and drum leads to
Cross down-comer and be connected to Vaporizing cooling circulating pump and evaporator circulating pump, the evaporator circulating pump other end steams with one-level respectively
Hair device, secondary evaporimeter are connected with the entrance point of high-temperature flue gas automatic shunt valve, one-level evaporator, secondary evaporimeter and high temperature cigarette
The port of export of gas automatic shunt valve is connected by pipeline with tedge respectively, and tedge is connected with drum, described Vaporizing cooling
The circulating pump other end is connected with furnace bottom circulating line, and the other end of furnace bottom circulating line is connected by pipeline with tedge, drum
Also it is connected with outer for jet chimney and drum feed pipe, safety valve and pressure gauge is provided with described drum.
Described high-temperature flue gas automatic shunt valve includes valve plate, valve plate rotating drive mechanism, valve plate hoisting mechanism, described
Valve plate is arranged in reinforced concrete outrigger by valve plate hoisting mechanism, and valve plate is driven by valve plate rotating drive mechanism to be rotated,
Described valve plate includes valve body, anchoring hook, connecting plate and mullite quick-drying anti-explosion cast bed of material, described anchoring hook and connecting plate
It is separately positioned on valve body, is provided with mullite quick-drying anti-explosion cast bed of material on the outside of valve body, valve plate bottom is provided with center of rotation
Axle, valve plate top are provided with valve shaft, and described valve plate device for hoisting mechanism includes hanging steel structure, steel deck-plate and thrust bearing, institute
The steel deck-plate stated is arranged on valve plate top, and described hanging steel structure is arranged on steel deck-plate top, and hanging steel structure top is provided with only
Thrust bearing, the valve shaft at the top of valve plate are each passed through steel deck-plate, hanging steel structure and thrust bearing, and described valve shaft turns with valve plate
Dynamic drive mechanism is connected, and described valve plate rotating drive mechanism includes crank, connecting rod and cylinder, described crank and valve shaft phase
Fixed, crank is connected with connecting rod, and the connecting rod other end is connected with the cylinder rod of cylinder, between described valve plate and reinforced concrete outrigger
Refractory brick is provided with, described steel deck-plate is placed in refractory brick top, and refractory brick is corresponding with the rotary middle spindle of valve plate bottom
Opening position setting is fluted, and rotary middle spindle bottom is located in groove, is placed on outside described reinforced concrete in auxillary flue；
Described valve body includes water inlet pipe, return pipe, work core pipe, working column, fixed support and closure plate, described work
Making sleeve pipe includes multiple, from left to right sets gradually, and is connected at the top of multiple working columns, in each described working column
A work core pipe is respectively arranged with, each work mutually is fixed between core pipe bottom and working column by fixed support, each
The bottom of working column is respectively arranged with closure plate, and the work core pipe of low order end is connected by water inlet pipe with evaporator circulating pump, most
The working column of left end is connected by return pipe with drum, from evaporator circulating pump to the water inlet pipe work core pipe successively
Pressure gauge, regulating valve, flow monitoring table, ball valve, vent valve, swivel joint group and ball valve are provided with, from working column to drum
Between return pipe on be disposed with ball valve, swivel joint group, vent valve, ball valve, safety valve and backwater check-valves.
Constrained fireproof sleeve is set in the groove on described refractory brick, and the rotary middle spindle bottom of valve plate bottom is positioned at about
In beam fireproof sleeve.
The resistance to material structure of described flue includes wall insulating layer and vault heat-insulation layer, and described vault heat-insulation layer is set
On the top of wall insulating layer, described wall insulating layer is followed successively by wall clay brick, wall fiberboard containing zirconium, wall from inside to outside
Body lightweight thermal insulation brick and the high-purity fiberboard of wall, it is light that described vault heat-insulation layer is followed successively by vault clay brick, vault from inside to outside
The high-purity fiberboard of matter insulating brick, vault and vault smear the bed of material.
Compared to the prior art a kind of heater for rolling steel residual neat recovering system of the present invention, has beneficial effect following prominent
Fruit：
One-level evaporator is arranged in the high temperature section flue of nearly heating furnace, not only substantially increases waste heat recovery efficiency,
While it ensure that the safe to use of the equipment such as the air conservation pipe group in flue collector, air preheater, gas preheater；
High-temperature flue gas automatic shunt valve is arranged on before secondary evaporimeter, can optionally be increased according to production status
Steam production is incorporated to pipe network；Avoid the occurrence of so-called " circulation is uneconomical "（When burning or overhaul because rolling line failure heating furnace is empty, if flue gas
Flue collector is fully entered, even if smoke pre-heating air, coal gas also can not bring benefits）；
High-temperature flue gas automatic shunt valve valve plate cooling circuit employs Vaporizing cooling, on valve valve plate rotating part cooling circuit
There is provided swivel joint group to ensure not reveal under various switch operating modes, equipment dependability is high, fault rate is few；
Flue length characteristics of compact layout, flue structure is compact, in addition to the locational space for taking into full account waste-heat recovery device, heating
Spacing very little between stove and waste-heat recovery device and waste-heat recovery device and chimney, greatly reduce unnecessary waste heat damage
Lose, resistance to material insulation and good sealing effect, fume afterheat loss is few；
Wall insulating layer and vault heat-insulation layer are provided with, improves insulation and the sealing effectiveness of flue.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of existing heater for rolling steel residual neat recovering system；
Accompanying drawing 2 is the heater for rolling steel residual neat recovering system structural representation of the present invention；
Accompanying drawing 3 is the structural representation of the resistance to material structure of flue；
Accompanying drawing 4 is one-level evaporator, secondary evaporimeter and high-temperature flue gas automatic shunt valve connection diagram；
Accompanying drawing 5 is high-temperature flue gas automatic shunt valve structural representation；
Accompanying drawing 6 is the valve board structure schematic diagram of high-temperature flue gas automatic shunt valve；
Accompanying drawing 7 is the structural representation of high-temperature flue gas automatic shunt valve body cooling circuit；
Description of reference numerals：1st, flue side wall, 2, major-minor flue dividing wall, 3, air conservation pipe group, 4, air preheater,
5th, gas preheater, 6, furnace pressure automatic regulating valve, 7, flue collector, 8, auxillary flue, 9, one-level evaporator, 10, high-temperature flue gas it is automatic
Flow divider, 101, valve plate, 1011, valve body, 1012, anchoring hook, 1013, connecting plate, 1014, mullite quick-drying anti-explosion castable
Layer, 102, valve plate rotating drive mechanism, 1021, crank, 1022, connecting rod, 1023, cylinder, 103, valve plate hoisting mechanism, 1031,
Hang steel structure, 1032, steel deck-plate, 1033, thrust bearing, 104, rotary middle spindle, 105, valve shaft, 11, secondary evaporimeter,
12nd, drum, 13, down-comer, 14, Vaporizing cooling circulating pump, 15, evaporator circulating pump, 16, tedge, 17, furnace bottom circulation pipe
Road, 18, it is outer supply jet chimney, 19, drum feed pipe, 20, safety valve, 21, pressure gauge, 22, reinforced concrete outrigger, 23, resistance to
Firebrick, 231, groove, 232, constraint fireproof sleeve, 24, water inlet pipe, 25, return pipe, 26, work core pipe, 27, working column, 28,
Fixed support, 29, closure plate, 30, regulating valve, 31, flow monitoring table, 32, ball valve, 33, vent valve, 34, swivel joint group, 35,
Backwater check-valves, 36, wall clay brick, 37, wall fiberboard containing zirconium, 38, wall light insulating brick, 39, the high-purity fiber of wall
Plate, 40, vault clay brick, 41, vault lightweight thermal insulation brick, 42, the high-purity fiberboard of vault, 43, vault smear the bed of material.
Embodiment
A kind of heater for rolling steel residual neat recovering system of the present invention is made in detailed below with reference to Figure of description 1 to accompanying drawing 7
Ground explanation.
A kind of heater for rolling steel residual neat recovering system of the present invention, its structure include flue side wall 1, major-minor flue dividing wall
2nd, air conservation pipe group 3, air preheater 4, gas preheater 5 and furnace pressure automatic regulating valve 6, set in described flue side wall 1
Flue is equipped with, flue is divided into anterior flue, middle part flue and rear portion flue, and described major-minor flue dividing wall 2 is arranged on middle part
In flue, middle part flue is divided into flue collector 7 and auxillary flue 8, described air conservation pipe group 3, air preheater 4 and coal gas
Direction of the preheater 5 along anterior flue toward rear portion flue is set in turn in flue collector 7, and described furnace pressure automatic regulating valve 6 is set
Put in the rear portion flue being connected with chimney, the resistance to material structure of flue is provided with described flue side wall 1, before described
One-level evaporator 9 is provided with portion's flue, the direction of described auxillary flue 8 interior edge front portion flue toward rear portion flue is disposed with
High-temperature flue gas automatic shunt valve 10 and secondary evaporimeter 11, described one-level evaporator 9, secondary evaporimeter 11 and high-temperature flue gas are certainly
Dynamic flow divider 10 is arranged in parallel, the recirculated water disengaging of one-level evaporator, secondary evaporimeter and high-temperature flue gas automatic shunt valve end
Pipeline is connected with drum 12 respectively, and drum 12 is connected to Vaporizing cooling circulating pump 14 by down-comer 13 and evaporator circulates
Pump 15, the other end of evaporator circulating pump 15 respectively with one-level evaporator 9, secondary evaporimeter 11 and high-temperature flue gas automatic shunt valve 10
Entrance point be connected, the port of export of one-level evaporator 9, secondary evaporimeter 11 and high-temperature flue gas automatic shunt valve 10 passes through pipe respectively
Road is connected with tedge 16, and tedge 16 is connected with drum 12, and the described other end of Vaporizing cooling circulating pump 14 circulates with furnace bottom
Pipeline 17 is connected, and the other end of furnace bottom circulating line 17 is connected by pipeline with tedge 16, and drum 12 also supplies steam pipe with outer
Road 18 is connected with drum feed pipe 19, and safety valve 20 and pressure gauge 21 are provided with described drum 12.
Described high-temperature flue gas automatic shunt valve 10 includes valve plate 101, valve plate rotating drive mechanism 102, valve plate hoisting machine
Structure 103, described valve plate 101 are arranged in reinforced concrete outrigger 22 by valve plate hoisting mechanism 103, and valve plate 101 passes through valve
The driving rotation of plate rotating drive mechanism 102, described valve plate 101 include valve body 1011, anchoring hook 1012, connecting plate 1013 and not
Carry out stone quick-drying anti-explosion cast bed of material 1014, described anchoring hook 1012 and connecting plate 1013 are separately positioned on valve body 1011, valve
The outside of body 1011 is provided with mullite quick-drying anti-explosion cast bed of material 1014, and the bottom of valve plate 101 is provided with rotary middle spindle 104, valve
The top of plate 101 is provided with valve shaft 102, and described valve plate device for hoisting mechanism 103 includes hanging steel structure 1031, the and of steel deck-plate 1032
Thrust bearing 1033, described steel deck-plate 1032 are arranged on the top of valve plate 101, and described hanging steel structure 1031 is arranged on steel deck-plate
1032 tops, the top of hanging steel structure 1031 are provided with thrust bearing 1033, and the valve shaft 105 at the top of valve plate 101 is each passed through steel
Cover plate 1032, hanging steel structure 1031 and thrust bearing 1033, described valve shaft 102 are connected with valve plate rotating drive mechanism 102,
Described valve plate rotating drive mechanism 102 includes crank 1021, connecting rod 1022 and cylinder 1023, described crank 1021 and valve plate
The phase of axle 105 is fixed, and crank 1021 is connected with connecting rod 1022, and the other end of connecting rod 1022 is connected with the cylinder rod of cylinder 1023, described
Refractory brick 23 is provided between valve plate 101 and reinforced concrete outrigger 22, described steel deck-plate 1032 is placed in the top of refractory brick 23,
The opening position corresponding with the rotary middle spindle 104 of the bottom of valve plate 101 of refractory brick 23 sets fluted 231, rotary middle spindle 104
Bottom is located in groove 231, and described reinforced concrete outrigger 22 is placed in auxillary flue 8；
The drivening rod 1022 that stretches of cylinder 1023 moves, and connecting rod 1022 drives crank 1021 and the valve being fixedly connected with crank
Board shaft 105 rotates, and so as to drive valve plate 101 to rotate, realizes the open and close of valve plate 101；
Described valve body 1011 includes water inlet pipe 24, return pipe 25, work core pipe 26, working column 27, fixed support 28
With closure plate 29, described working column 27 includes multiple, from left to right sets gradually, and the top of multiple working columns 27 is connected
It is logical, a work core pipe 26 is respectively arranged with each described working column 27, each bottom of core pipe 26 that works covers with work
Fixed between pipe 27 by the phase of fixed support 28, the bottom of each working column 27 is respectively arranged with closure plate 29, the work of low order end
Make core pipe 26 by water inlet pipe 24 with evaporator circulating pump 15 to be connected, the working column 27 of high order end passes through return pipe 25 and drum
12 are connected, and pressure gauge 21, regulating valve are disposed with from evaporator circulating pump 15 to the water inlet pipe 24 work core pipe 26
30th, flow monitoring table 31, ball valve 32, vent valve 33, swivel joint group 34 and ball valve 32, from working column 27 to drum 12
Return pipe 25 on be disposed with ball valve 32, swivel joint group 34, vent valve 33, ball valve 32, safety valve 20 and backwater non-return
Valve 35.
Constrained fireproof sleeve 232, the center of rotation of the bottom of valve plate 101 are set in the groove 231 on described refractory brick 23
The bottom of axle 104 is in constraint fireproof sleeve 232.
The resistance to material structure of described flue includes wall insulating layer and vault heat-insulation layer, and described vault heat-insulation layer is set
On the top of wall insulating layer, described wall insulating layer is followed successively by wall clay brick 36, wall fiberboard containing zirconium from inside to outside
37th, wall light insulating brick 38 and the high-purity fiberboard 39 of wall, described vault heat-insulation layer are followed successively by vault clay from inside to outside
The high-purity fiberboard 42 of brick 40, vault lightweight thermal insulation brick 41, vault and vault smear the bed of material 43.Improve the insulation and sealing of flue
Effect.
Evaporator circulating pump 15 of the recirculated water entered by drum feed pipe 19 in drum 12 along down-comer 13 respectively enters
One-level evaporator 9, secondary evaporimeter 11 and high-temperature flue gas automatic shunt valve 10 are exchanged heat, and then enter back into vapour along tedge 16
Bag 12, caused steam are discharged by outer for jet chimney 18, and the recirculated water in drum 12 enters stove along Vaporizing cooling circulating pump 14
Bottoming cycle pipeline 17 is exchanged heat, and then enters back into drum 12 along tedge 16, and caused steam supplies the row of jet chimney 18 by outer
Go out；Recirculated water passes through the pressure gauge 21 on water inlet pipe 24, regulating valve 30, flow monitoring table 31, ball valve along evaporator circulating pump 15
32nd, vent valve 33, swivel joint group 34 and ball valve 32 enter in the valve body 1011 of high-temperature flue gas automatic shunt valve 10, and recirculated water exists
Circulated in work core pipe 26 and working column 27, finally heated recirculated water is through the ball valve 32 on return pipe 25, rotation
Joint group 34, vent valve 33, ball valve 32, safety valve 20 and backwater check-valves 35 enter drum 12；The loop is provided with cut-off
Ball valve 32 to overhaul, there is provided swivel joint group 34 with ensure it is various switch operating modes under do not reveal, set safety valve 20, pressure
Power table 21, flow monitoring table 31 etc. ensure safe for operation.
The INSULATION DESIGN of valve plate：The outside weldings anchoring hook 1012 of working column 27, and with mullite quick-drying anti-explosion castable
Poured, definite shape be made, with ensure hang steel structure obtain abundance cooling and abundance it is heat-insulated.
It is the known technology of those skilled in the art in addition to the technical characteristic described in specification.
Claims (4)
1. a kind of heater for rolling steel residual neat recovering system, including flue side wall, major-minor flue dividing wall, air conservation pipe group, sky
Air preheater, gas preheater and furnace pressure automatic regulating valve, flue are provided with described flue side wall, flue is divided into anterior cigarette
Road, middle part flue and rear portion flue, described major-minor flue dividing wall are arranged in the flue of middle part, based on the separation of middle part flue
Flue and auxillary flue, described air conservation pipe group, air preheater and gas preheater are along anterior flue toward rear portion flue
Direction is set in turn in flue collector, and described furnace pressure automatic regulating valve is arranged in the rear portion flue being connected with chimney, its
It is characterized in：The resistance to material structure of flue is provided with described flue side wall, one-level evaporation is provided with described anterior flue
Device, the direction of described auxillary flue interior edge front portion flue toward rear portion flue are disposed with high-temperature flue gas automatic shunt valve and two level
Evaporator, described one-level evaporator, secondary evaporimeter and high-temperature flue gas automatic shunt valve are arranged in parallel, one-level evaporator, two
The recirculated water turnover pipeline of level evaporator and high-temperature flue gas automatic shunt valve end is connected with drum respectively, and drum passes through down-comer
Be connected to Vaporizing cooling circulating pump and evaporator circulating pump, the evaporator circulating pump other end respectively with one-level evaporator, two
Level evaporator is connected with the entrance point of high-temperature flue gas automatic shunt valve, and one-level evaporator, secondary evaporimeter and high-temperature flue gas are automatic
The port of export of flow divider is connected by pipeline with tedge respectively, and tedge is connected with drum, described Vaporizing cooling circulating pump
The other end is connected with furnace bottom circulating line, and the other end of furnace bottom circulating line is connected by pipeline with tedge, drum also with outside
It is connected for jet chimney with drum feed pipe, safety valve and pressure gauge is provided with described drum.
2. a kind of heater for rolling steel residual neat recovering system according to claim 1, it is characterized in that：Described high-temperature flue gas is certainly
Dynamic flow divider includes valve plate, valve plate rotating drive mechanism, valve plate hoisting mechanism, and described valve plate is set by valve plate hoisting mechanism
In reinforced concrete outrigger, valve plate is driven by valve plate rotating drive mechanism to be rotated, and described valve plate includes valve body, anchoring
Hook, connecting plate and mullite quick-drying anti-explosion cast bed of material, described anchoring hook and connecting plate are separately positioned on valve body, outside valve body
Side is provided with mullite quick-drying anti-explosion cast bed of material, and valve plate bottom is provided with rotary middle spindle, valve shaft is provided with the top of valve plate,
Described valve plate device for hoisting mechanism includes hanging steel structure, steel deck-plate and thrust bearing, described steel deck-plate and is arranged on valve plate top,
Described hanging steel structure is arranged on steel deck-plate top, and hanging steel structure top is provided with thrust bearing, the valve shaft point at the top of valve plate
Not Chuan Guo steel deck-plate, hanging steel structure and thrust bearing, described valve shaft be connected with valve plate rotating drive mechanism, described valve plate
Rotating drive mechanism includes crank, connecting rod and cylinder, and described crank is mutually fixed with valve shaft, and crank is connected with connecting rod, connecting rod
The other end is connected with the cylinder rod of cylinder, and refractory brick, described steel lid are provided between described valve plate and reinforced concrete outrigger
Plate is placed in refractory brick top, and the refractory brick opening position setting corresponding with the rotary middle spindle of valve plate bottom is fluted, in rotation
Mandrel bottom is located in groove, is placed on outside described reinforced concrete in auxillary flue；
Described valve body includes water inlet pipe, return pipe, work core pipe, working column, fixed support and closure plate, described work set
Pipe includes multiple, from left to right sets gradually, and is connected at the top of multiple working columns, difference in each described working column
A work core pipe is provided with, each work mutually is fixed between core pipe bottom and working column by fixed support, each work
The bottom of sleeve pipe is respectively arranged with closure plate, and the work core pipe of low order end is connected by water inlet pipe with evaporator circulating pump, high order end
Working column be connected by return pipe with drum, from evaporator circulating pump to work core pipe water inlet pipe on set gradually
There are pressure gauge, regulating valve, flow monitoring table, ball valve, vent valve, swivel joint group and ball valve, between working column to drum
Return pipe on be disposed with ball valve, swivel joint group, vent valve, ball valve, safety valve and backwater check-valves.
3. a kind of heater for rolling steel residual neat recovering system according to claim 2, it is characterized in that：On described refractory brick
Constrained fireproof sleeve is set in groove, and the rotary middle spindle bottom of valve plate bottom is in constraint fireproof sleeve.
4. a kind of heater for rolling steel residual neat recovering system according to claim 1, it is characterized in that：Described flue is resistance to
Material structure includes wall insulating layer and vault heat-insulation layer, and described vault heat-insulation layer is arranged on the top of wall insulating layer, described
Wall insulating layer to be followed successively by wall clay brick, wall fiberboard containing zirconium, wall light insulating brick and wall from inside to outside high-purity
Fiberboard, described vault heat-insulation layer are followed successively by vault clay brick, vault lightweight thermal insulation brick, the high-purity fiberboard of vault from inside to outside
The bed of material is smeared with vault.
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| CN201610465873.9A CN105953248B (en) | 2016-06-24 | 2016-06-24 | A kind of heater for rolling steel residual neat recovering system |
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| CN105953248B true CN105953248B (en) | 2018-04-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106765259B (en) * | 2016-11-23 | 2018-09-18 | 广东东燃热能科技有限公司 | A kind of energy-efficient method of boiler afterheat recycling |
| CN106679439B (en) * | 2017-02-08 | 2019-02-19 | 中冶华天工程技术有限公司 | A kind of heater for rolling steel afterheat utilizing system |
| CN106871651B (en) * | 2017-02-08 | 2019-02-19 | 中冶华天工程技术有限公司 | A kind of heater for rolling steel waste heat Optimum utilization system |
| CN106705689B (en) * | 2017-02-08 | 2019-02-19 | 中冶华天工程技术有限公司 | A kind of waste heat recycling adjustable heater for rolling steel smoke waste heat utilization system of ratio |
| CN106766967B (en) * | 2017-02-08 | 2019-02-19 | 中冶华天工程技术有限公司 | Waste heat recycles the adjustable heater for rolling steel fume afterheat Optimum utilization system of ratio |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3696544B2 (en) * | 2001-01-23 | 2005-09-21 | 本田技研工業株式会社 | Cogeneration equipment |
| NO20014924L (en) * | 2001-10-10 | 2003-04-11 | Norsk Hydro As | Process and equipment for the treatment of polluted exhaust gases |
| CN202747843U (en) * | 2012-03-12 | 2013-02-20 | 段宝 | Normal pressure low-temperature three-return-stroke waste heat recoverer |
| CN202915334U (en) * | 2012-06-27 | 2013-05-01 | 济南达能动力技术有限责任公司 | Multilevel utilization system for exhausted smoke waste heat energy transfer of utility boiler |
| CN104215079A (en) * | 2014-09-04 | 2014-12-17 | 山西太钢不锈钢股份有限公司 | Method and device for recycling flue gas waste heat of heating furnace |
| CN204187592U (en) * | 2014-10-17 | 2015-03-04 | 中石化南京工程有限公司 | A kind of pan shell type waste heat boiler of built in bypass control valve |
| CN204593354U (en) * | 2015-04-22 | 2015-08-26 | 南京中电节能有限公司 | Fume afterheat energy level utilizes system |
| CN205717269U (en) * | 2016-06-24 | 2016-11-23 | 山东钢铁股份有限公司 | A kind of heater for rolling steel residual neat recovering system |
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