CN104791784A - Coal water slurry pelletizing and gunite device - Google Patents
Coal water slurry pelletizing and gunite device Download PDFInfo
- Publication number
- CN104791784A CN104791784A CN201510094168.8A CN201510094168A CN104791784A CN 104791784 A CN104791784 A CN 104791784A CN 201510094168 A CN201510094168 A CN 201510094168A CN 104791784 A CN104791784 A CN 104791784A
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- Prior art keywords
- pipe
- pelletizing
- water
- coal
- slurry
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
- F23D1/005—Burners for combustion of pulverulent fuel burning a mixture of pulverulent fuel delivered as a slurry, i.e. comprising a carrying liquid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2201/00—Burners adapted for particulate solid or pulverulent fuels
- F23D2201/20—Fuel flow guiding devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2214/00—Cooling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention relates to a device which is in use in the coal water slurry fluidifying suspension combustion process, in particular to a coal water slurry pelletizing and guinte device. The coal water slurry pelletizing and guinte device comprises a pelletizing pipe and a cooling water casing pipe which is arranged on the periphery of the pelletizing pipe in a surrounding mode. The coal water slurry pelletizing and gunite device is provided with a hot wind pipe and a combustion chamber. An air outlet of the hot wind pipe is provided with hydrocyclones in a matched mode. An inlet end of the pelletizing pipe penetrates out of the hot wind pipe. The inlet end of the pelletizing pipe is provided with a viewer in a matched mode. The inlet side end of the pelletizing pipe is provided with a blow-down valve. A U-shaped channel is arranged inside the cooling water casing pipe. A water inlet of the U-shaped channel is provided with a cooling water adjusting valve. The hot wind pipe is arranged on the periphery of the pelletizing pipe and the cooling water casing pipe. An air outlet of the hot wind pipe is communicated with the combustion chamber. The inner surface of the pelletizing pipe of the pelletizing and guinte device is coated with teflon, and anti-adhesion and heat proofing are achieved. Cooling and protecting are carried out on the periphery of the pelletizing pipe by adopting low-temperature cooling water, the pelletizing pipe is not easy to adhesion and blocking, the service life of the pelletizing pipe is prolonged, meanwhile the condition that the coal water slurry is solidified due to the heating and water loss, as a result that a slurry feeding device is blocked is prevented.
Description
Technical field
The present invention relates to a kind of water coal pulp fluidized suspension burner, be specifically related to a kind of water-coal-slurry granulation refractory gunning equipment.
Background technology
Water-coal-slurry is widely used in power station and Industrial Boiler and stove as a kind of high effect cleaning fuel, especially in recent years the appearance of fluidization-suspension combustion coal water slurry boiler, the revolution of COAL-WATER SLURRY TECHNOLOGY application especially.
Traditional fluidization-suspension combustion coal water slurry boiler device enters granulating device by slurry supply pump; boiler furnace is entered through granulating pipe; adopt low-temperature cold wind to carry and sweep along water-coal-slurry to drip its granulation of promotion; play the effect of cooling granulating pipe, to prevent water coal slurry in granulating pipe by heat bonding, blocking simultaneously.Statement in as disclosed in volume the 3rd phase in " coal journal " March the 33rd in 2008 " application of a water coal pulp fluidized Suspending Combustion Technique and 14 MW boilers ": " for the fluidisation one suspension combustion mode of water-coal-slurry; due to burning condition superior in bed; its combustion efficiency in burner hearth can not be affected; change the requirement to water-coal-slurry feeding granularity like this, no longer need the necessary high-pressure atomizing device of spray burning.But simultaneously in order to meet the requirement of different density fluidized bed combustion, the slurry added drips and must meet certain size distribution, just the combustion characteristics of boiler can be made best.The granulation of high concentration can meet the needs of water coal pulp fluidized-Suspending Combustion Technique to slurry technology.This device is by cooling air air intake tube connector, flame-observing mirror.Water-coal-slurry pulp-inlet pipe, with sealing bolt dredging hole, purge the parts such as scavenge pipe and water-coal-slurry granulating pipe and form "; the cleaning of water (mud) coal slurry or scavenging conduit (can water receiving or compressed air) be housed on water-coal-slurry granulating pipe; dredging hole is left on the top of water-coal-slurry granulating pipe; to facilitate dredging, operationally should close.A whole set of water-coal-slurry granulating pipe is placed in cooling duct or cool wind box, to prevent the dehydration of being heated of water coal slurry from solidifying, blocks to sizing device.
Nonetheless; the existing water-coal-slurry granulation charging gear caused due to viscosity in aqueous coal slurries, impurity still keeps away in unavoidable granulating pipe the shortcoming boning, block; not only affect water-coal-slurry granulation gunite effect; increase operation maintenance workload; and because a large amount of cooling air solidifying to prevent water-coal-slurry dehydration of being heated, blocking to sizing device, making a large amount of low warm air enter combustion chamber; affect combustion efficiency, increase boiler heat loss 1 ~ 3%.
Summary of the invention
In order to overcome the above-mentioned defect of prior art; the invention provides a kind of water-coal-slurry granulation gunnite method and device thereof; it have avoid existing water-coal-slurry whitewash granulating device exist granulating pipe in water-coal-slurry easily bonding, blocking; also solve the burning of sub-cooled wind effect, increase the shortcoming of boiler heat loss.
For above-mentioned technical problem, the technical solution scheme that the present invention proposes is:
A kind of water-coal-slurry granulation refractory gunning equipment, comprise granulating pipe, be around in the cooling water pipe of granulating pipe periphery, described water-coal-slurry granulation charging gear is provided with warm-air pipe, described warm-air pipe is arranged on the periphery of granulating pipe and cooling water pipe, described warm-air pipe gas outlet passes into combustion chamber, and described warm-air pipe gas outlet arranges cyclone; Described granulating pipe entrance point passes warm-air pipe, and described granulating pipe entrance point arranges peephole, and described granulating pipe import side arranges blow down valve; Be provided with U-shaped passage in described cooling water pipe, described U-shaped passage water inlet arranges cooling sea water regulating valve.
Preferred version is: described cleaning valve is compressed air blow down valve or steam blowing valve.
Preferred version is: described cyclone is bladed axial swirler.
Preferred version is: described granulating pipe inner surface spraying polytetrafluoroethylene (PTFE), and/or described warm-air pipe and cyclone are heat-resisting alloy steel or heat-resisting alloy cast steel.
Preferred version is: described warm-air pipe outer end is provided with peephole.
The present invention's granulation pay-off compared to existing technology, its beneficial effect is granulating pipe inner surface spraying polytetrafluoroethylene (PTFE), and antiseized heat-resisting, granulating pipe periphery utilizes sub-cooled water cooling protection, granulating pipe not easily bonds, block, and extends the service life of granulating pipe; Change high-temperature hot-air into by traditional cold wind and be granulated whitewashing, be not only conducive to burning, and can boiler heat loss be reduced, by the setting of peephole and clear Sweep valve, be easy to the inspection of granulation refractory gunning equipment, adjustment, cleaning and maintenance, use reliably safer.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
In diagram, granulating pipe 1; Cooling water pipe 2; Warm-air pipe 3; Cyclone 4; Hot blast control valve 5; Compressed air blow down valve 6; Cooling sea water regulating valve 7; Peephole lid 8; Peephole 9; U-shaped passage water inlet 12.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described:
As shown in Figure 1: a kind of water-coal-slurry granulation refractory gunning equipment that the present invention relates to, this device comprises granulating pipe 1, be around in the cooling water pipe 2 of granulating pipe 1 periphery, granulating pipe 1 and cooling water pipe 2 periphery enclose warm-air pipe 3, the connection combustion chamber, gas outlet of warm-air pipe 3, the gas outlet of warm-air pipe 3 arranges cyclone 4, cyclone 4 is bladed axial swirler, the air inlet of warm-air pipe 3 arranges hot-blast valve 5, granulating pipe 1 charging aperture one end passes warm-air pipe 3, granulating pipe 1 entrance point arranges peephole lid 8, the import side of granulating pipe 1 arranges compressed air blow down valve 6, compressed air blow down valve 6 is equipped and is communicated with compressed-air actuated compressed air interface, (cooling water is) U-shaped passage 12 is provided with in cooling water pipe 2, cooling water pipe 12 arranges cooling sea water regulating valve 7 in inlet end.
Granulating pipe 1 inner surface spraying polytetrafluoroethylene (PTFE), water-coal-slurry can be avoided to be heated felt jam, and warm-air pipe 3 and bladed axial swirler 4 is heat-resisting alloy steel material.
Warm-air pipe 3 air inlet one end that bladed axial swirler 4 level arranged in warm-air pipe 3 gas outlet is relative, is provided with peephole 9, for observing the combustion case in combustion chamber.
In the present invention, the water-coal-slurry granulation refractory gunning equipment that water-coal-slurry is delivered to by stock pump, enters combustion chamber through granulating pipe 1; High-temperature hot-air enters warm-air pipe 3 through hot blast control valve 5, rotates into combustion chamber through bladed axial swirler 4, drips mix and participate in combustion-supporting with the granulation water-coal-slurry flowed out from granulating pipe 1; Water-coal-slurry granulation and combustion position can be observed by peephole 9, and carry out adjustment hot blast by hot blast control valve 5; Low-temperature cooling water enters cooling water pipe 7 through cooling sea water regulating valve 6, through U, and cooling protection granulating pipe; Situation in granulating pipe 1 can be observed by peephole lid 8, and available by compressed air blow down valve 9, purge granulating pipe 1 inner surface.
Described a kind of water-coal-slurry granulation gunnite method and device thereof, its granulating pipe hot blast adopts boiler air preheater outlet hot blast, allows hot blast temperature≤400 DEG C; Cooling water temperature adopts 10 ~ 30 DEG C.
Those skilled in the art should be realized that; the foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (5)
1. a water-coal-slurry granulation refractory gunning equipment, comprises granulating pipe, is around in the cooling water pipe of granulating pipe periphery, it is characterized in that: described water-coal-slurry granulation charging gear is provided with warm-air pipe, described burning room, and described warm-air pipe gas outlet arranges cyclone; Described granulating pipe entrance point passes warm-air pipe, and described granulating pipe entrance point arranges peephole, and described granulating pipe import side arranges blow down valve; Be provided with U-shaped passage in described cooling water pipe, described U-shaped passage water inlet arranges cooling sea water regulating valve; Warm-air pipe is arranged on the periphery of granulating pipe and cooling water pipe, and described warm-air pipe gas outlet passes into combustion chamber.
2. water-coal-slurry granulation refractory gunning equipment as claimed in claim 1, is characterized in that: described cleaning valve is compressed air blow down valve or steam blowing valve.
3. water-coal-slurry granulation refractory gunning equipment as claimed in claim 1, is characterized in that: described cyclone is bladed axial swirler.
4. water-coal-slurry granulation refractory gunning equipment as claimed in claim 1, is characterized in that: described granulating pipe inner surface spraying polytetrafluoroethylene (PTFE), and/or described warm-air pipe and cyclone are heat-resisting alloy steel or heat-resisting alloy cast steel.
5. water-coal-slurry granulation refractory gunning equipment as claimed in claim 1, is characterized in that: described warm-air pipe outer end is provided with peephole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510094168.8A CN104791784A (en) | 2015-03-03 | 2015-03-03 | Coal water slurry pelletizing and gunite device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510094168.8A CN104791784A (en) | 2015-03-03 | 2015-03-03 | Coal water slurry pelletizing and gunite device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104791784A true CN104791784A (en) | 2015-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510094168.8A Pending CN104791784A (en) | 2015-03-03 | 2015-03-03 | Coal water slurry pelletizing and gunite device |
Country Status (1)
| Country | Link |
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| CN (1) | CN104791784A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838893A (en) * | 2017-03-09 | 2017-06-13 | 北京热华能源科技有限公司 | A kind of water-coal-slurry charging gear and boiler for multipath circulating fluidized bed boiler |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4042344A (en) * | 1975-05-09 | 1977-08-16 | The Broken Hill Proprietary Company Limited | Process for the production of gaseous mixtures |
| CN1125163A (en) * | 1995-09-07 | 1996-06-26 | 华东理工大学 | Three-way channel combined water coal slurry gasification nozzle with cyclone |
| CN1702375A (en) * | 2005-06-24 | 2005-11-30 | 北京航天动力研究所 | Combustible powder swirl-flow combined burner |
| CN1724937A (en) * | 2005-07-09 | 2006-01-25 | 万启科 | Water coal slurry or mud coal slurry boiler slurry supply device possessing dredging and cooling function |
| CN201172653Y (en) * | 2007-11-23 | 2008-12-31 | 山东科技大学 | Direct freezing type coal water slurry gasification nozzle with expanding segment |
| CN101907295A (en) * | 2010-08-12 | 2010-12-08 | 浙江百能科技有限公司 | Low-NOx combustor for combusting coal water slurry and combustion method |
| CN102032554A (en) * | 2010-12-13 | 2011-04-27 | 青岛海众环保锅炉股份有限公司 | Coal water slurry and coal water slurry powder combusting hybrid boiler |
| CN204756918U (en) * | 2015-03-03 | 2015-11-11 | 杭州福鼎节能科技服务有限公司 | Coal slurry granulation refractory gunning equipment |
-
2015
- 2015-03-03 CN CN201510094168.8A patent/CN104791784A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4042344A (en) * | 1975-05-09 | 1977-08-16 | The Broken Hill Proprietary Company Limited | Process for the production of gaseous mixtures |
| CN1125163A (en) * | 1995-09-07 | 1996-06-26 | 华东理工大学 | Three-way channel combined water coal slurry gasification nozzle with cyclone |
| CN1702375A (en) * | 2005-06-24 | 2005-11-30 | 北京航天动力研究所 | Combustible powder swirl-flow combined burner |
| CN1724937A (en) * | 2005-07-09 | 2006-01-25 | 万启科 | Water coal slurry or mud coal slurry boiler slurry supply device possessing dredging and cooling function |
| CN201172653Y (en) * | 2007-11-23 | 2008-12-31 | 山东科技大学 | Direct freezing type coal water slurry gasification nozzle with expanding segment |
| CN101907295A (en) * | 2010-08-12 | 2010-12-08 | 浙江百能科技有限公司 | Low-NOx combustor for combusting coal water slurry and combustion method |
| CN102032554A (en) * | 2010-12-13 | 2011-04-27 | 青岛海众环保锅炉股份有限公司 | Coal water slurry and coal water slurry powder combusting hybrid boiler |
| CN204756918U (en) * | 2015-03-03 | 2015-11-11 | 杭州福鼎节能科技服务有限公司 | Coal slurry granulation refractory gunning equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838893A (en) * | 2017-03-09 | 2017-06-13 | 北京热华能源科技有限公司 | A kind of water-coal-slurry charging gear and boiler for multipath circulating fluidized bed boiler |
| CN106838893B (en) * | 2017-03-09 | 2018-10-12 | 北京热华能源科技有限公司 | A kind of water-coal-slurry charging gear and boiler for multipath circulating fluidized bed boiler |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20150722 |