CN208652609U - A kind of boiler coal dust burning heating equipment - Google Patents
A kind of boiler coal dust burning heating equipment Download PDFInfo
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- CN208652609U CN208652609U CN201821059996.3U CN201821059996U CN208652609U CN 208652609 U CN208652609 U CN 208652609U CN 201821059996 U CN201821059996 U CN 201821059996U CN 208652609 U CN208652609 U CN 208652609U
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Abstract
The utility model relates to a kind of boiler coal dust burning heating equipments, it includes A moulded coal powder heating equipment and Type B coal dust heating equipment.The A moulded coal powder heating equipment is connect with the Type B coal dust heating equipment, and is arranged on raw coal powder pipeline；The other end of A moulded coal powder heating equipment is connect with coal pulverizer；The other end of Type B coal dust heating equipment is connect with boiler furnace burner；Transition jet chimney and transition pulverized coal channel are equipped between A moulded coal powder heating equipment and Type B coal dust heating equipment；Hydrophobic outlet is equipped on A moulded coal powder heating equipment；Extracted steam from turbine pipeline is equipped on Type B coal dust heating equipment.The utility model is suitable for the heat exchange of coal pulverizer wind powder mixture and extracted steam from turbine and the swiftly flowing two-phase medium of any two gas-solid, can select different steam parameters, the two kinds of heating equipment matched combined applications of A type and Type B according to practical coal.The utility model solves the problems such as heating equipment friction durability is short, heat exchange efficiency is low, circulating resistance is big and accumulation detonation.
Description
Technical field
The utility model relates to a kind of heating equipments, refer in particular to a kind of boiler coal dust burning heating equipment.
Background technique
Currently, using in thermal power plant, coal is irregular, and coal quality is poor, generally multifuel combustion mode, but different coals quality
The ingredients difference such as moisture, ash content it is very big, the temperature for causing coal dust to enter stokehold is not achieved and uses coal requirement.Meanwhile by coal-grinding
The components temperature limiting such as machine internal bearings, pulverizer outlet temperature are limited between 65 DEG C~95 DEG C, lead according to coal difference
Cause can not be improved into Stokehole pulverized coal temperature.
For using high ash content, high-moisture coal quality, fuel fire lag, burn-off rate is low that boiler machinery is caused not fire completely
It heats loss and heat loss due to exhaust gas increases, so that boiler efficiency reduces, have a great impact for the stability of boiler combustion.
In addition, the fluctuation of thermal power station's boiler load is frequently, the underrun period is increasingly longer, at low load the stability of coal dust firing
It is particularly important.
In modern thermal power plant, it is all made of extraction cycle, there are also much room, institutes for the utilization scope of extracted steam from turbine
It is improved with the steam extraction using extraction cycle into Stokehole pulverized coal temperature.For power plant, extracted steam from turbine utilization had both been widened
Space reduces discharge loss, and improves boiler combustion efficiency, reduces unit coal consumption.But at present for swiftly flowing wind
Powder mixture particle heating, there are easy to wear, heat exchange efficiency is low, circulating resistance leads to problems such as to accumulate detonation greatly, to entering stokehold
There has been no ideal solutions for the problem of coal dust heats.
Summary of the invention
A kind of boiler coal dust burning heating equipment is provided the purpose of the utility model is to overcome insufficient in the prior art,
It can be effectively utilized system extracted steam from turbine and improves into Stokehole pulverized coal temperature, improves heat exchange efficiency, extends heating equipment
Friction durability reduces circulating resistance, so that it is quick-fried to solve easily accumulation initiation when swiftly flowing wind powder mixture passes through heat exchanger
Combustion problem.
The technical solution of the utility model is:
A kind of boiler coal dust burning heating equipment, it is characterised in that: it includes: that A moulded coal powder heating equipment or Type B coal dust add
Hot equipment is arranged on raw coal powder pipeline, is connected as one with raw coal powder pipeline；A moulded coal powder heating equipment or the heating of Type B coal dust
One end of equipment is connect with coal pulverizer, and the other end is connect with boiler furnace burner；And in A moulded coal powder heating equipment or Type B
Coal dust heating equipment is equipped with hydrophobic outlet；Steam turbine pumping is additionally provided on A moulded coal powder heating equipment or Type B coal dust heating equipment
Steam pipe road.
Another boiler coal dust burning heating equipment, it includes that Yarrow type boiler coal dust burning heating equipment and Type B boiler use
Coal dust heating equipment, it is characterised in that: the Yarrow type boiler coal dust burning heating equipment and the Type B boiler coal dust burning
Heating equipment connection, and be arranged on raw coal powder pipeline；The other end and coal pulverizer of Yarrow type boiler coal dust burning heating equipment connect
It connects；The other end of Type B boiler coal dust burning heating equipment is connect with boiler furnace burner；It is heated in Yarrow type boiler coal dust burning
Transition jet chimney and transition pulverized coal channel are equipped between equipment and Type B boiler coal dust burning heating equipment；It is used in Yarrow type boiler
Coal dust heating equipment is equipped with hydrophobic outlet；Extracted steam from turbine pipeline is equipped on Type B boiler coal dust burning heating equipment.
Wherein, the Type B coal dust heating equipment, comprising: steam (steam extraction) entrance, steam (steam extraction) outlet, outer tube,
Inner sleeve, fin, vertical deflector, partition, arc deflector, expansion joint.It is wind powder mixture runner pipe on the inside of inner sleeve
Road, inner sleeve inside pipe wall are equipped with equally distributed fin；Space between inner sleeve and outer tube is steam (steam extraction) runner pipe
Road, inner sleeve pipe outer wall are equipped with fin different in size, vertical deflector, arc deflector and partition；Outer tube both ends are equipped with
Steam (steam extraction) entrance and exit；Expansion joint is arranged in outer tube one end.
The wind powder mixture circulation duct inner wall is equipped with the fin that circumferencial direction is evenly spaced on, and the effect of fin has
Two: first is that increasing the heat transfer area of heat transfer, improving heat transfer efficiency；Second is that having flow-disturbing effect to the movement of wind powder mixture, increase
By force with the heat exchange of steam (steam extraction).
Steam (steam extraction) circulation duct be equipped with fin different in size, vertical deflector, arc deflector and every
Plate, partition radial end face are sector.Fin effect different in size be collectively formed back and forth with partition, arc deflector it is reciprocal
Clip structure, so that steam (steam extraction) is under the action of vertical deflector and arc deflector, it can be double both axially and radially
It is dynamic to reversing current back and forth, increase the flowing stroke of steam (steam extraction), the heat exchange of enhancing and wind powder mixture.Vertical deflector is steaming
Vapour (steam extraction) entrance and exit air flue guiding role.
Expansion joint is arranged in described outer tube one end, and the displacement that compensation pipeline is generated by temperature change guarantees system peace
Quan Xing.
The Type B coal dust heating equipment effect is to reach raising by steam (steam extraction) and wind powder mixture heat exchange
Wind powder mixture temperature reduces the purpose of the degree of superheat of superheated steam, enters the heating of A moulded coal powder for next step steam (steam extraction) and sets
The standby release latent heat of vaporization is prepared.
The A moulded coal powder heating equipment, comprising: steam (steam extraction) entrance, hydrophobic outlet, outer tube, expansion joint, reducing
Pipe, deflector, conical flow guiding block, diversion pipe, double-layer wear-resistant ceramic tube, heat exchanger tube, baffle plate, end plate.
The outer tube head and the tail welding installation reduced pipe, deflector is arranged in entrance reduced pipe inside；Diversion pipe and bilayer
Wear resistance ceramic tube is seamlessly connected by entrance end plate, and all diversion pipe gaps of arrival end plate end face use conical flow guiding block to fill
It is whole.Double-layer wear-resistant ceramic tube and heat exchanger tube are seamlessly connected by intermediate end plate, and diversion pipe-double-layer wear-resistant ceramic tube-heat exchanger tube is total
With composition wind powder mixture circulation duct；Heat-exchanging tube bundle gap is steam (steam extraction) circulation duct；Heat exchanger tube by intermediate end plate,
Outlet end plate and intermediate several baffle plates are fixed, each end plate with outer tube welded seal, it is ensured that so that wind powder mixture with
The isolation of steam (steam extraction) circulation duct.
Wherein, the reduced pipe connects former Mill Systems pulverized coal channel, due to reduced pipe in the flowing direction caliber by
Flaring, wind powder mixture will appear speed rapid drawdown flowing through reduced pipe region, so reduced pipe uses lower horizontal, upside cone
The pattern of shape can effectively reduce wind powder mixture in the reduction of speed deposition of duct bottom in caliber expansion stroke, eliminate
Coal dust accumulates detonation hidden danger.
The deflector is mounted in entrance reduced pipe, and the end face of deflector is arc, is gradually raised up on length direction, long
Degree is 2/3rds or so of reducing length of tube, and since wind powder mixture speed reduces in reduced pipe, deflector can change it
Directional velocity and flow distribution make the upward flow forward of wind powder mixture, through dispersion wind powder mixture on the downside of pipeline
Wind powder mixture deposition caused by flow is expanded to reduction due to caliber.
The diversion pipe and double-layer wear-resistant ceramic tube pass through entrance end plate connection, all diversion pipe gaps of arrival end plate end face
It is complete with the filling of conical flow guiding block.When entering heat-exchanging tube bundle by reducer pipe due to wind powder mixture, part coal dust is head-on hit
Plane of the entrance end plate in addition to hole, which is zero, easily settled to be deposited in bottom.Diversion pipe and taper are led
Stream block effect be gap plane between end plate bore is stuffed entirely be it is streamlined, seamlessly transit wind powder mixture by reducer pipe
Into heat-exchanging tube bundle, no longer exist and hit deceleration plane, utmostly reduces coal dust accumulation.
The double-layer wear-resistant ceramic tube is arranged after diversion pipe, before heat exchanger tube.Internal layer is wear-resistant ceramic, and outer layer is nothing
Steel pipe is stitched, speed when wind powder mixture enters small diameter tube heat-exchanging tube bundle arranged side by side by reducer pipe had both been effectively reduced and has increased to entrance
Abrasion, and guarantee and subsequent heat exchanger tube seamless welding, solve high speed winds powder stream to the wear problem of pipeline.
The heat exchanger tube is made of the equally distributed tube bank of circumferential end surfaces, as wind powder mixture circulation duct, and steam (is taken out
Vapour) it is dynamic along interbank clearance flow.Heat exchanger tube is fixed by intermediate end plate, outlet end plate and intermediate several baffle plates, and each end plate is equal
With outer tube welded seal, it is ensured that so that wind powder mixture and steam (steam extraction) circulation duct completely cut off.
The caliber of the heat exchanger tube, length, quantity determine its heat exchange area and the resistance of ducting, and heat-exchanging tube bundle uses tubular
When formula, overall drag factor, round tube specification range of choice isWhen heat transfer effect it is best.Exchanging heat end surfaces can be with
It is various different shapes, it includes: polygon, triangle, circle, to increase the circulation area of wind powder mixture, enhancing heat exchange
Effect；Total circulation area is restrained less than or equal to coal pulverizer raw coal powder pipeline circulation area, guarantees the requirement of system safe speed.
The steam (steam extraction) and wind powder mixture flow direction are on the contrary, realize counterflow heat exchange, heat source stream (steam extraction) can
The wind powder mixture passed through at a high speed is rapidly heated to coal and wanted by the steam extraction that different parameters are selected according to practical different types of coal
Seek temperature.
The A moulded coal powder heating equipment effect is latent by steam (steam extraction) and wind powder mixture heat exchange release vaporization
Heat excludes the moisture in coal dust in advance, improves wind powder mixture temperature, improves boiler combustion efficiency, effectively solves smoke evacuation temperature
The problems such as degree is high, fly ash combustible material is high, upper furnace coking.
The A moulded coal powder heating equipment and Type B coal dust heating equipment, can according to practical coal difference and steam parameter come
Select one or more to be applied in combination；Also it can be used alone.
When the two is applied in combination, heating system process is divided into wind powder mixture process and steam flow.
Wind powder mixture process are as follows: in wind powder mixture-coal pulverizer outlet pulverized coal channel-A moulded coal powder heating equipment-
Between transition pulverized coal channel-Type B coal dust heating equipment-boiler furnace burner.
Steam flow are as follows: extracted steam from turbine-extracted steam from turbine pipeline-Type B coal dust heating equipment-middle transition steam
Pipeline-A moulded coal powder heating equipment-drain water piping.
Utility model has the advantages that the utility model be suitable for coal pulverizer wind powder mixture and extracted steam from turbine and
The heat exchange of the swiftly flowing two-phase medium of any two gas-solid can select different steam parameters, A type and Type B according to practical coal
Two kinds of heating equipment matched combined applications.The utility model utilizes extraction cycle using power plant steam turbine steam extraction as heat source
Steam extraction is improved into Stokehole pulverized coal temperature, had both been widened extracted steam from turbine using space, and had been reduced discharge loss, meanwhile, break through mill
Coal machine outlet temperature conventional limit, and coal pulverizer wind powder mixture is heated to wanting for certain temperature before entering burner
It asks, improves boiler combustion efficiency, reduce unit coal consumption；And while guaranteeing heat exchange area, accumulated powder, abrasion are fully considered
Etc. factors.The friction durability that the utility model solves heating equipment is short, heat exchange efficiency is low, circulating resistance is big and accumulation detonation
The problems such as.
Detailed description of the invention
Fig. 1 is 1 system flow schematic diagram of the utility model heating equipment embodiment.
Fig. 2 is 2 system flow schematic diagram of the utility model heating equipment embodiment.
Fig. 3 is 3 system flow schematic diagram of the utility model heating equipment embodiment.
Fig. 4-1 is the utility model A moulded coal powder heating equipment structural schematic diagram.
Fig. 4-2 is the utility model A moulded coal powder heating equipment partial structurtes enlarged drawing.
Fig. 5-1 is the utility model Type B coal dust heating equipment structural schematic diagram.
Fig. 5-2 is the utility model Type B coal dust heating equipment cross section structure schematic diagram.
Figure label:
A moulded coal powder heating equipment 1；Type B coal dust heating equipment 2；Coal pulverizer 3；Transition jet chimney 4；Transition pulverized coal channel
5；Extracted steam from turbine pipeline 6；
Boiler furnace burner 7；
Steam (steam extraction) entrance 11；Outer tube 12；Hydrophobic outlet 13；Reduced pipe 14；
Deflector 15；Heat exchanger tube 16；Baffle plate 17；End plate 181,182,183；
Conical flow guiding block 19；Diversion pipe 20；Double-layer wear-resistant ceramic tube 21；
Steam (steam extraction) entrance 22；Steam (steam extraction) outlet 23；
Outer tube 24；Inner sleeve 25；Vertical deflector 26；Fin 27；Partition 28；
Arc deflector 29；Expansion joint 30.
Specific embodiment
With reference to the accompanying drawings of the specification and embodiment, the utility model is further described.
Embodiment 1:
As shown in Fig. 1, Fig. 4-1 to Fig. 5-2, the utility model boiler coal dust burning heating equipment, it includes that A moulded coal powder adds
Hot equipment 1 and Type B coal dust heating equipment 2；A moulded coal powder heating equipment 1 and Type B coal dust heating equipment 2 are arranged in series in raw coal powder
On pipeline, it is connected as one with raw coal powder pipeline；The other end of A moulded coal powder heating equipment 1 is connect with coal pulverizer 3；Type B coal dust adds
The other end of hot equipment 2 is connect with boiler furnace burner 7；And A moulded coal powder heating equipment 1 and Type B coal dust heating equipment 2 it
Between be equipped with transition jet chimney 4 and transition pulverized coal channel 5；Hydrophobic outlet 13 is equipped on A moulded coal powder heating equipment 1；In Type B coal
Powder heating equipment 2 is equipped with extracted steam from turbine pipeline 6；Wherein:
The A moulded coal powder heating equipment 1, comprising: steam (steam extraction) entrance 11；Outer tube 12；Hydrophobic outlet 13；Reducing
Pipe 14；Deflector 15；Heat exchanger tube 16；Baffle plate 17；End plate 181,182,183；Conical flow guiding block 19；Diversion pipe 20；It is double-deck resistance to
Grind ceramic tube 21；Expansion joint 30, in which:
Reduced pipe 14 is equipped at the head and the tail both ends of the outer tube 12；Water conservancy diversion is equipped in the inside of the reduced pipe 14 of entrance
Plate 15；Diversion pipe 20 is equipped in the end plate 181 of entrance；On the entrance face of entrance end plate 181 between all diversion pipes 20 between
Gap is all made of conical flow guiding block 19 and fills completely；The other end of entrance end plate 181 is connect with double-layer wear-resistant ceramic tube 21；Arrival end
Plate 181, diversion pipe 20, double-layer wear-resistant ceramic tube 21 are all made of seamless connection；Double-layer wear-resistant ceramic tube 21 passes through with heat exchanger tube 16
Intermediate end plate 182 is also using seamless connection；Heat exchanger tube is constituted with double-layer wear-resistant ceramic tube 21, heat exchanger tube 16 by multiple diversion pipes 20
Beam forms wind powder mixture circulation duct；The gap of heat-exchanging tube bundle is steam (steam extraction) circulation duct；Heat exchanger tube 16 passes through centre
End plate 182, outlet end plate 183 and intermediate several baffle plates 17 are fixed；End plate 181,182,183 welds with outer tube 12 close
Envelope, to ensure so that wind powder mixture and steam (steam extraction) circulation duct completely cut off.
The reduced pipe 14 is connect with former Mill Systems pulverized coal channel；Reduced pipe 14 is bored using lower horizontal, upside
The form of shape, and be to gradually expand in the caliber of the flow direction of wind powder mixture.
The double-layer wear-resistant ceramic tube 21 is arranged after diversion pipe 20, before heat exchanger tube 16, and internal layer is wear-resisting pottery
Porcelain, outer layer are seamless steel pipe.
The heat-exchanging tube bundle uses round tube form, and round tube specification selectable range isDescribed changes
The end face of heat pipe can be various different shapes, including polygon, triangle；It is former less than or equal to coal pulverizer to restrain total circulation area
Pulverized coal channel circulation area.
The Type B coal dust heating equipment 2, it includes: steam (steam extraction) entrance 22；Steam (steam extraction) outlet 23；Housing
Pipe 24；Inner sleeve 25；Vertical deflector 26；Fin 27；Partition 28；Arc deflector 29；Expansion joint 30, in which:
The inside of the inner sleeve 25 is wind powder mixture circulation duct；Space between inner sleeve 25 and outer tube 24
For steam (steam extraction) circulation duct；The fin 27 being evenly spaced on is equipped in 25 inner wall of inner sleeve；In the outer wall of inner sleeve 25
Equipped with fin 27 different in size, vertical deflector 26, arc deflector 29 and partition 28；The both ends of outer tube 24, which are equipped with, steams
Vapour (steam extraction) entrance 22 and steam (steam extraction) outlet 23；Expansion joint 30 is equipped in one end of outer tube 24.
Workflow of the utility model heating equipment for wind powder mixture heating is:
Wind powder mixture process:
Wind powder mixture exports pulverized coal channel from coal pulverizer 3 and enters 1 entrance reduced pipe 14 of A moulded coal powder heating equipment, reducing
Pipe 14 is lower horizontal, and the form of upside taper, caliber gradually expands in the longitudinal direction；Wind powder mixture is in 14th area of reduced pipe
Domain speed gradually decreases, the guiding role through deflector 15, and wind powder mixture changes flow direction, and wind powder mixture is under pipeline
The flow-reduction of bottom；After wind powder mixture passes through reduced pipe 14, by inlet honeycomb duct 20 and conical flow guiding block 19, wind powder is mixed
It closes object smooth transition and enters heat-exchanging tube bundle, to reduce abrasion of the wind powder mixture speed abruptly increase to entrance, first pass through leading portion
Double-layer wear-resistant ceramic tube 21 enters back into heat exchanger tube 16；Total circulation area is restrained less than or equal to coal pulverizer raw coal powder pipeline circulating face
Product guarantees the requirement of system safe speed；After wind powder mixture and steam (steam extraction) heat exchange, temperature is improved, through middle transition coal dust
Pipeline enters the inner sleeve 25 of Type B coal dust heating equipment 2；25 inner wall of inner sleeve is equipped with the fin that circumferencial direction is evenly spaced on
27, reinforce wind powder mixture and steam (steam extraction) heat exchange, wind powder mixture temperature further increase after through genuine pulverized coal channel
Into boiler furnace burner 7, start subsequent boiler combustion.
Heat source stream (steam extraction) process:
Steam (steam extraction) enters 2 steam of Type B heating equipment (steam extraction) entrance 22 through extracted steam from turbine pipeline 6；Inner sleeve 25
Outer wall, that is, steam (steam extraction) circulation duct be equipped with fin 27 different in size, vertical deflector 26, arc deflector 29 and every
Plate 28；28 radial end face of partition is sector；Steam (steam extraction), can under the action of fin 27, partition 28 and arc deflector 29
With two-way flowing reciprocal back and forth both axially and radially, increase the flowing stroke of steam (steam extraction), enhancing is changed with wind powder mixture
Heat；Vertical deflector 26 plays guiding role in steam (steam extraction) entrance 22 and outlet 23；Steam (steam extraction) and wind powder mixture
After heat exchange, the degree of superheat is reduced, and is entered 1 entrance 11 of A type heating equipment along middle transition jet chimney 4, is restrained along heat exchanger tube 16
Gap flowing, under the action of segmental baffle 17, around flow forward, with wind powder mixture counterflow heat exchange occurs for circumferential ring, releases
The latent heat of vaporization, temperature decline are put, the steam (steam extraction) for completing heat exchange forms hydrophobic collect through outlet 13 and enters hydrophobic development unit
It is used as him.
Wind powder mixture process carries out simultaneously with steam (steam extraction) process, and flow direction is on the contrary, counterflow heat exchange.
The utility model heating equipment applies Mr. Yu's Thermal generation unit coal dust heating device, is heated using extracted steam from turbine
Enter Stokehole pulverized coal mixture, by improving into furnace fuel temperature, if meager coal charging temperature is increased to 140 DEG C or so by 90 DEG C, mentions
High boiler combustion efficiency, reduces coal consumption.
Embodiment 2:
As shown in Fig. 2, Fig. 4-1, Fig. 4-2, the utility model boiler coal dust burning heating equipment, it includes: that A moulded coal powder adds
Hot equipment 1 is arranged on raw coal powder pipeline, is connected as one with raw coal powder pipeline；One end of A moulded coal powder heating equipment 1 and coal-grinding
Machine 3 connects, and the other end is connect with boiler furnace burner 7；And hydrophobic outlet 13 is equipped on A moulded coal powder heating equipment 1；?
Extracted steam from turbine pipeline 6 is additionally provided on A moulded coal powder heating equipment 1.
Wherein, 1 structure of A moulded coal powder heating equipment is identical as the structure of A moulded coal powder heating equipment 1 in embodiment 1,
So it will not be repeated.
Embodiment 3:
As shown in Fig. 3, Fig. 5-1, Fig. 5-2, the utility model boiler coal dust burning heating equipment, it includes: that Type B coal dust adds
Hot equipment 2 is arranged on raw coal powder pipeline, is connected as one with raw coal powder pipeline；One end of Type B coal dust heating equipment 2 and coal-grinding
Machine 3 connects, and the other end is connect with boiler furnace burner 7；And hydrophobic outlet 13 is equipped on Type B coal dust heating equipment 2；?
Extracted steam from turbine pipeline 6 is additionally provided on Type B coal dust heating equipment 2.
Wherein, 2 structure of Type B coal dust heating equipment is identical as the structure of Type B coal dust heating equipment 2 in embodiment 1,
So it will not be repeated.
The utility model heating equipment can be applied in coal pulverizer wind powder mixture and extracted steam from turbine and any two
The heat exchange of the swiftly flowing two-phase medium of gas-solid.And it can be according to industrial user's wind powder mixture pipeline, arrangement, connection type
Difference, can apply.
The above is the best embodiment of the utility model, is not intended to limit the utility model, all in the utility model
Spirit and principle within, any modification, equivalent substitution, improvement and etc. done, should be included in the scope of the utility model it
It is interior.
Claims (9)
1. a kind of boiler coal dust burning heating equipment, it is characterised in that: it includes: A moulded coal powder heating equipment or the heating of Type B coal dust
Equipment is arranged on raw coal powder pipeline, is connected as one with raw coal powder pipeline；A moulded coal powder heating equipment or the heating of Type B coal dust are set
Standby one end is connect with coal pulverizer, and the other end is connect with boiler furnace burner；And in A moulded coal powder heating equipment or Type B coal
Powder heating equipment is equipped with hydrophobic outlet；Extracted steam from turbine is additionally provided on A moulded coal powder heating equipment or Type B coal dust heating equipment
Pipeline.
2. a kind of boiler coal dust burning heating equipment, it includes A moulded coal powder heating equipment and Type B coal dust heating equipment, feature
Be: the A moulded coal powder heating equipment is connect with the Type B coal dust heating equipment, and is arranged on raw coal powder pipeline；A
The other end of moulded coal powder heating equipment is connect with coal pulverizer；The other end and boiler furnace burner of Type B coal dust heating equipment connect
It connects；Transition jet chimney and transition pulverized coal channel are equipped between A moulded coal powder heating equipment and Type B heating equipment；In A moulded coal powder
Heating equipment is equipped with hydrophobic outlet；Extracted steam from turbine pipeline is equipped on Type B coal dust heating equipment.
3. boiler coal dust burning heating equipment according to claim 1 or 2, it is characterised in that: the A moulded coal powder heating
Equipment, it includes: steam or extraction entrance；Outer tube；Hydrophobic outlet；Reduced pipe；Deflector；Heat exchanger tube；Baffle plate；End plate；
Conical flow guiding block；Diversion pipe；Double-layer wear-resistant ceramic tube；Expansion joint, wherein
Reduced pipe is equipped at the head and the tail both ends of the outer tube；Deflector is equipped in the inside of the reduced pipe of entrance；Arrival end
The arrival end of plate is equipped with diversion pipe；Gap on the entrance face of entrance end plate between all diversion pipes is all made of conical flow guiding block
Filling is complete；The other end of entrance end plate is connect with double-layer wear-resistant ceramic tube；Entrance end plate, diversion pipe, double-layer wear-resistant ceramic tube
It is all made of seamless connection；Double-layer wear-resistant ceramic tube and heat exchanger tube are also used by intermediate end plate to be seamlessly connected；By multiple diversion pipes
Heat-exchanging tube bundle is constituted with double-layer wear-resistant ceramic tube, heat exchanger tube, forms wind powder mixture circulation duct；The gap of heat-exchanging tube bundle is to steam
Vapour or steam extraction circulation duct；Heat exchanger tube is fixed by intermediate end plate, outlet end plate and intermediate several baffle plates；Each end plate with
Outer tube welded seal.
4. boiler coal dust burning heating equipment according to claim 3, it is characterised in that: the reduced pipe and former coal-grinding
The connection of machine system pulverized coal channel；Reduced pipe uses lower horizontal, the form of upside taper, and in the flow direction of wind powder mixture
Caliber be gradually expand.
5. boiler coal dust burning heating equipment according to claim 3, it is characterised in that: the double-layer wear-resistant ceramic tube
It is arranged after diversion pipe, before heat exchanger tube, internal layer is wear-resistant ceramic, and outer layer is seamless steel pipe.
6. boiler coal dust burning heating equipment according to claim 3, it is characterised in that: the heat-exchanging tube bundle is using circle
Form of tubes, round tube specification selectable range are
7. boiler coal dust burning heating equipment according to claim 3, it is characterised in that: the end face of the heat exchanger tube can
To be various different shapes, including polygon, triangle；Total circulation area is restrained to circulate less than or equal to coal pulverizer raw coal powder pipeline
Area.
8. boiler coal dust burning heating equipment according to claim 1 or 2, it is characterised in that: the Type B coal dust heating
Equipment, it includes: steam or extraction entrance；Steam or steam extraction outlet；Outer tube；Inner sleeve；Vertical deflector；Fin；Partition；
Arc deflector；Expansion joint, wherein the inside of inner sleeve is wind powder mixture circulation duct；Between inner sleeve and outer tube
Space is steam or steam extraction circulation duct；The fin being evenly spaced on is equipped in interior internal surface of sleeve pipe；It is set in the outer wall of inner sleeve
There are fin different in size, vertical deflector, arc deflector and partition；The both ends of outer tube are equipped with steam or extraction entrance
It is exported with steam or steam extraction.
9. boiler coal dust burning heating equipment according to claim 1, it is characterised in that: the coal dust heating equipment,
One or more A moulded coal powder heating equipment and/or Type B coal dust heating equipment combined heated can be selected to set according to actual needs
It is standby to use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821059996.3U CN208652609U (en) | 2018-07-05 | 2018-07-05 | A kind of boiler coal dust burning heating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821059996.3U CN208652609U (en) | 2018-07-05 | 2018-07-05 | A kind of boiler coal dust burning heating equipment |
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| Publication Number | Publication Date |
|---|---|
| CN208652609U true CN208652609U (en) | 2019-03-26 |
Family
ID=65783228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821059996.3U Active CN208652609U (en) | 2018-07-05 | 2018-07-05 | A kind of boiler coal dust burning heating equipment |
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| Country | Link |
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| CN (1) | CN208652609U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506957A (en) * | 2018-07-05 | 2018-09-07 | 北京蓝爱迪电力技术有限公司 | A kind of boiler coal dust burning heating equipment |
| CN110388637A (en) * | 2019-07-01 | 2019-10-29 | 上海发电设备成套设计研究院有限责任公司 | A kind of energy-saving type boiler ultra-low load steady combustion system |
-
2018
- 2018-07-05 CN CN201821059996.3U patent/CN208652609U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506957A (en) * | 2018-07-05 | 2018-09-07 | 北京蓝爱迪电力技术有限公司 | A kind of boiler coal dust burning heating equipment |
| CN110388637A (en) * | 2019-07-01 | 2019-10-29 | 上海发电设备成套设计研究院有限责任公司 | A kind of energy-saving type boiler ultra-low load steady combustion system |
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