CN109504467A - The full recovery system of coal gasification waste heat - Google Patents
The full recovery system of coal gasification waste heat Download PDFInfo
- Publication number
- CN109504467A CN109504467A CN201811377836.8A CN201811377836A CN109504467A CN 109504467 A CN109504467 A CN 109504467A CN 201811377836 A CN201811377836 A CN 201811377836A CN 109504467 A CN109504467 A CN 109504467A
- Authority
- CN
- China
- Prior art keywords
- water
- cooling
- synthesis gas
- screen
- cooling wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002309 gasification Methods 0.000 title claims abstract description 42
- 239000003245 coal Substances 0.000 title claims abstract description 26
- 239000002918 waste heat Substances 0.000 title claims abstract description 26
- 238000011084 recovery Methods 0.000 title claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 212
- 239000007789 gas Substances 0.000 claims abstract description 90
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 86
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 85
- 230000005855 radiation Effects 0.000 claims abstract description 49
- 239000002699 waste material Substances 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000006200 vaporizer Substances 0.000 claims abstract description 22
- 230000008676 import Effects 0.000 claims abstract description 8
- 239000002893 slag Substances 0.000 claims description 14
- 239000000498 cooling water Substances 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 5
- 239000003250 coal slurry Substances 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 4
- 239000003034 coal gas Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 235000019628 coolness Nutrition 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 1
- 206010020843 Hyperthermia Diseases 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/86—Other features combined with waste-heat boilers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses the full recovery systems of coal gasification waste heat, comprising: gasification furnace and the useless pot of convection current, gasification furnace include: shell, vaporizer, radiation waste pot, deslagging pond, and vaporizer includes the first water-cooling wall and burner；Radiation waste pot includes: syngas outlet, second water-cooling wall, water-cooling screen group and third water-cooling wall, second water-cooling wall is located in radiation waste pot and limits synthesis gas down going channel, water-cooling screen group includes multiple long water-cooling screens and multiple short water-cooling screens, multiple long water-cooling screens and multiple short water-cooling screens are located in synthesis gas down going channel and circumferentially distributed, third water-cooling wall is located at outside the second water-cooling wall, the synthesis gas data feedback channel for being connected to synthesis gas down going channel and syngas outlet is formed between third water-cooling wall and the second water-cooling wall, deslagging pond is connected with radiation waste the bottom of a pan end；Convection current is given up, and pot is interior to be equipped with water cooling tube, and the useless cookware of convection current has crude synthesis gas import, syngas outlet and ash hole, and crude synthesis gas import is connected with syngas outlet.
Description
Technical field
The invention belongs to gasification furnace fields, specifically, the present invention relates to the full recovery systems of coal gasification waste heat.
Background technique
The coal gas of high temperature sensible heat process program of coal gasification recycling at present specifically includes that chilling process and pot destroying process.Wherein swash
Cold technique is the most commonly used, the coal gas of high temperature that vaporizer can be come out from 1300 degrees centigrade Quench to 200 degrees centigrades,
Device structure is simple, with low investment, but energy recovery efficiency is low.Waste heat boiler can be by coal gas of high temperature from 1300 degrees Celsius of coolings
To 700 degrees centigrades, part of high temperature sensible heat is recycled, but still has energy loss, while the conjunction after gained heat exchange
Cause its quality lower at dust is carried in gas.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to propose a kind of full recovery system of coal gasification waste heat, can improved using the full recovery system of coal gasification waste heat
Radiation waste pot is avoided to block while heat exchange area, and gained synthesis gas quality with higher.
In one aspect of the invention, the invention proposes a kind of full recovery systems of coal gasification waste heat.It is according to the present invention
Embodiment, the full recovery system of coal gasification waste heat include:
Gasification furnace, the gasification furnace include:
Shell；
Vaporizer, the vaporizer include；
First water-cooling wall, first water-cooling wall are located in the vaporizer, and the vaporizer bottom crimp formation is slagged tap
Mouthful；
Coal-water slurry nozzle, the coal-water slurry nozzle are located at the top of the shell；
Radiation waste pot, the radiation waste pot are located at below the vaporizer and are connected to the slag notch, the radiation waste
Pot include:
Syngas outlet, the syngas outlet are located at the top of the radiation waste pot side wall；
Second water-cooling wall, second water-cooling wall are arranged in the radiation waste pot, and second water-cooling wall forms synthesis
Gas down going channel；
Water-cooling screen group, the water-cooling screen group include multiple long water-cooling screens and multiple short water-cooling screens, the multiple long water-cooling screen
It is in the synthesis gas down going channel and circumferentially distributed with the multiple short water-cooling screen setting, each long water-cooling screen and every
A short water-cooling screen is extended from second water-cooling wall to the central axis direction of the synthesis gas down going channel；
Third water-cooling wall, the third water-cooling wall are located at outside second water-cooling wall, and the third water-cooling wall with it is described
The synthesis gas data feedback channel for being connected to the synthesis gas down going channel and the syngas outlet is formed between second water-cooling wall；
Wherein, the lower header of second water-cooling wall, each water-cooling screen group lower header and the third water-cooling wall
Lower header be connected and with pass through radiation waste pot lower part cooling water inlet pipe be connected；
The upper collection of the upper collecting chamber of second water-cooling wall, the upper collecting chamber of each water-cooling screen group and the third water-cooling wall
Case is connected and is connected with the cooling water outlet pipe for passing through radiation waste pot top,
Deslagging pond, the deslagging pond is located at the lower section of the radiation waste pot and is connected with radiation waste the bottom of a pan end, described
The bottom in deslagging pond has slag-drip opening；
Convection current is given up pot, and the convection current, which is given up, is equipped with water cooling tube in pot, and the convection current cookware that gives up has crude synthesis gas import, closes
It is connected at gas outlet and ash hole, the crude synthesis gas import with the syngas outlet.
The full recovery system of coal gasification waste heat according to an embodiment of the present invention is made by the way that radiation waste pot is arranged below vaporizer
It obtains the high-temperature synthesis gas that vaporizer obtains to be directly entered in radiation waste pot, and the synthesis gas that water-cooling wall limits in radiation waste pot
The water-cooling screen group that setting is made of multiple long water-cooling screens and multiple short water-cooling screens in down going channel, more existing common water-cooling screen
The blocking for not easily leading to synthesis gas down going channel is set, enter back into later in synthesis gas rising passway with the second water-cooling wall and third
Water-cooling wall heat exchange, not only further increases heat exchange area, also extends synthesis gas heat exchanger channels, so that synthesis gas and third water
Cold wall has carried out secondary heat exchange, and Exposure degree is more thorough, and the synthesis gas after heat exchange is set in synthesis gas data feedback channel side wall
Syngas outlet, which supplies to convection current to give up, carries out recuperation of heat in pot.It as a result, can using the full recovery system of coal gasification waste heat of the application
To improve crude synthesis gas Exposure degree efficiency.
In addition, the full recovery system of coal gasification waste heat according to the above embodiment of the present invention can also have following additional skill
Art feature:
In some embodiments of the invention, the multiple long water-cooling screen and the multiple short water-cooling screen are along the synthesis gas
The distribution of down going channel circumferential direction transpostion interval.Thus, it is possible to which radiation waste pot is avoided to block, the full recovery system of coal gasification waste heat is improved
Exposure degree efficiency.
In some embodiments of the invention, the 1-2 short water coolings are arranged between long water-cooling screen described in each adjacent two
Screen.Thus, it is possible to which radiation waste pot is avoided to block, the Exposure degree efficiency of the full recovery system of coal gasification waste heat is improved.
In some embodiments of the invention, per the adjacent long water-cooling screen between the short water-cooling screen or per adjacent
Two short cold water screens between angle be 15-45 degree.Thus, it is possible to further increase the coal gasification waste heat and recycle entirely and be
The Exposure degree efficiency of system.
In some embodiments of the invention, the total number of the long water-cooling screen and the short water-cooling screen is 8-24.By
This, can be further improved the Exposure degree efficiency of the full recovery system of coal gasification waste heat.
In some embodiments of the invention, each long water-cooling screen has 6-15 root water cooling tube.Thus, it is possible into one
Step improves the Exposure degree efficiency of the heat recovering device.
In some embodiments of the invention, each short water-cooling screen has 3-6 root water cooling tube.Thus, it is possible into one
Step improves the Exposure degree efficiency of the full recovery system of coal gasification waste heat.
In some embodiments of the invention, the long water-cooling screen is connected with second water-cooling wall by fin, described
The width of long water-cooling screen is the 1/11-1/4 of the synthesis gas down going channel radius.Thus, it is possible to further increase the coal gasification
The Exposure degree efficiency of the full recovery system of waste heat.
In some embodiments of the invention, the short water-cooling screen is connected with second water-cooling wall by fin, described
The width of short water-cooling screen is the 2/35-1/11 of the synthesis gas down going channel radius.Thus, it is possible to further increase the coal gasification
The Exposure degree efficiency of the full recovery system of waste heat.
In some embodiments of the invention, the water cooling tube being arranged in the useless pot of the convection current is snakelike water cooling tube.As a result, may be used
To further increase the Exposure degree efficiency of the full recovery system of coal gasification waste heat.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the structural schematic diagram of the full recovery system of coal gasification waste heat according to an embodiment of the invention；
Fig. 2 is that the A-A level of radiation waste pot in the full recovery system of coal gasification waste heat according to an embodiment of the invention is cut
Face top view.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In one aspect of the invention, the invention proposes a kind of full recovery systems of coal gasification waste heat.It is according to the present invention
Embodiment, with reference to Fig. 1, which includes gasification furnace 100 and the useless pot 200 of convection current.
According to an embodiment of the invention, with reference to Fig. 1, gasification furnace 100 includes shell 11, vaporizer 10, the first water
Cold wall 12, coal-water slurry nozzle 13, slag notch 101, radiation waste pot 14 and deslagging pond 15, wherein the first water-cooling wall 12 is located at shell
In 11, and the bottom crimp of vaporizer 10 forms slag notch 101, and coal-water slurry nozzle 13 is located at the top of shell 11, and is suitable for
Water-coal-slurry and oxygen are supplied into vaporizer 10, and water-coal-slurry is enabled sufficiently to gasify to obtain high-temperature synthesis gas.Specifically, first
There are distance between water-cooling wall 12 and shell 11, so as to avoid shell from being damaged by the hyperthermia radiation of vaporizer, while for
It can properly increase the indoor temperature of gasification in raising vaporizer under the premise of gasification efficiency, and then guarantee that gasification furnace uses
The gasification efficiency of gasification furnace is improved while service life.
Still another embodiment in accordance with the present invention, with reference to Fig. 1, radiation waste pot 14 be located at the lower section of vaporizer 10 and with slag tap
Mouth 101 is connected to, and radiation waste pot 14 includes syngas outlet 102, the second water-cooling wall 16, water-cooling screen group 17 and third water-cooling wall 18.
A specific example according to the present invention, with reference to Fig. 1, syngas outlet 102 is located at the top of radiation side wall 14, the
Two water-cooling walls 16 are located in radiation waste pot 14 and limit synthesis gas down going channel 19, and the upper end of synthesis gas down going channel 19
It is connected with slag notch 101.Specifically, the high-temperature crude synthesis gas obtained in gasification furnace is advanced into the progress of radiation waste pot under slag notch
Heat exchange, to realize the recycling of crude synthesis gas sensible heat.
Another specific embodiment according to the present invention, with reference to Fig. 1 and 2, water-cooling screen group 17 includes multiple long water-cooling screens 171
With multiple short water-cooling screens 172, multiple long water-cooling screens 171 and multiple short water-cooling screens 172 are located in synthesis gas down going channel 19 and edge
Synthesis gas down going channel 19 is circumferentially distributed, and each long water-cooling screen 171 and each short water-cooling screen 172 are from the second water-cooling wall 16 to conjunction
Extend at 19 central axis direction of gas down going channel.Obviously, the present invention passes through the synthesis gas down going channel that is formed in the second water-cooling wall
Interior setting includes the water-cooling screen group of multiple long water-cooling screens and multiple short water-cooling screens, and the setting of more common water-cooling screen significantly avoids conjunction
At accidents such as gas down going channel blockings.
A specific example according to the present invention, with reference to Fig. 2, multiple long water-cooling screens 171 and multiple short water-cooling screens 172 are along conjunction
It is spaced apart at intersecting in 19 circumferential direction of gas down going channel.Specifically, it can use short water-cooling screen 172 for two or more long water
Cold screen 171 is spaced apart, and then can be arranged closely to avoid multiple long water-cooling screens 171, and fouling and slagging, blocking radiation waste are be easy to cause
Pot synthesis gas down going channel influences equipment operation.Furthermore it is also possible to fill up two or more long water using short water-cooling screen 172
Gap between cold screen 171, and then will not also result in blockage to synthesis gas down going channel while effectively improving heat exchange area.It is excellent
Selection of land, 1-2 short water-cooling screens 172 of arrangement between the long water-cooling screen 171 of each adjacent two.Inventors have found that taking this water-cooling screen
Set-up mode can effectively avoid dust stratification inside radiation waste pot from blocking up slag phenomenon while Enhanced Radiation Reduced Blast gives up pot heat exchange area,
In the case where equipment is normally driven, the heat exchange efficiency of maximum lifting system.According to a particular embodiment of the invention, preferably
Ground, as shown in Fig. 2, arranging 1 short water-cooling screen 172 between the long water-cooling screen 171 of each adjacent two.And multiple long water-cooling screens 171
It can be uniformly distributed in 19 circumferential direction of synthesis gas down going channel between multiple short water-cooling screens 172, and then it is equal that heat exchange can be improved
The structural stability of even property and radiation waste pot.
The total number of another specific example according to the present invention, long water-cooling screen 171 and short water-cooling screen 172 is 8-24.
Specifically it can suitably be increased and decreased according to 19 space size of synthesis gas down going channel in the second water-cooling wall 16.But long 171 He of water-cooling screen
The total number of short water-cooling screen 172 should not be excessive or very few, if very few meeting wasting space reduces heat exchange area, and then sensible heat returns
Receive low efficiency；Synthesis gas down going channel 19 can be made into if excessive to be excessively narrow, and then be likely to result in slag blocking and hang
Wall seriously affects equipment operation.
Another specific example according to the present invention, in order to avoid 19 space of synthesis gas down going channel in the second water-cooling wall 16
The size setting several on long water-cooling screen 171 and short water-cooling screen 172 influences, as shown in Fig. 2, by every adjacent long water-cooling screen 171
Angle α between short water-cooling screen 172 or between per adjacent two short water-cooling screen 172 is 15-45 degree, and then can be more
The total number of water-cooling screen in determining water-cooling screen group 17 is facilitated to be arranged.It especially can effectively keep long water-cooling screen in water-cooling screen group 17
171 and short water-cooling screen 172 distribution density so that water-cooling screen group 17 reaches maximum heat exchange area and best heat transfer effect.In addition,
Inventor also found, so that the angle between each adjacent two water-cooling screen is that 15-45 degree can also avoid slag blocking and wall built-up,
And then heat exchange efficiency is improved, save cost.
Another specific example according to the present invention, each long water-cooling screen 171 have 6-15 root water cooling tube.It is possible thereby to have
Effect improves heat exchange area.And the water pipe number of long water-cooling screen 171 can also according to long water-cooling screen 171 from the second water-cooling wall 16 to
The width that 19 center position of synthesis gas down going channel extends does not cause slag blocking, wall built-up and has subject to certain operating space.
Specifically, as shown in Fig. 2, long water-cooling screen 171 is connected with the second water-cooling wall 16 by fin (not shown), long water-cooling screen 171
Width L1 is the 1/11-1/4 of 19 radius R of synthesis gas down going channel.It is possible thereby to while guaranteeing maximum heat exchange area, it will not
Cause fouling and slagging, blocking radiation waste pot channel.
Another specific example according to the present invention, each short water-cooling screen 172 have 3-6 root water cooling tube.It is possible thereby to have
Effect makes up gap between two long water-cooling screen 171, and then improves heat exchange area to the maximum extent.And the water of short water-cooling screen 172
The width that pipe radical can also extend according to short water-cooling screen 172 from the second water-cooling wall 16 to the center position of synthesis gas down going channel 19
Degree does not cause slag blocking, wall built-up and has subject to certain operating space.Specifically, as shown in Fig. 2, short water-cooling screen 172 and
Two water-cooling walls 16 are connected by fin (not shown), and the width L2 of short water-cooling screen 172 is the 2/ of 19 radius R of synthesis gas down going channel
35-1/11.It is possible thereby to not will cause slag blocking and wall built-up while guaranteeing maximum heat exchange area.
According to still another embodiment of the invention, third water-cooling wall 18 is located at outside the second water-cooling wall 16, and third water-cooling wall
The synthesis gas data feedback channel for being connected to synthesis gas down going channel 19 Yu syngas outlet 102 is formed between 18 and the second water-cooling wall 16
20.As a result, the synthesis gas after the secondth water-cooling wall and the heat exchange of water-cooling screen group enters back into synthesis gas rising passway with the
Two water-cooling walls and the heat exchange of third water-cooling wall, not only further increase heat exchange area, also extend synthesis gas heat exchanger channels, so that
Synthesis gas and third water-cooling wall have carried out secondary heat exchange, and Exposure degree is more thorough.
According to a particular embodiment of the invention, as shown in Fig. 2, the width of synthesis gas data feedback channel 20 is by the second water-cooling wall 16
The distance between third water-cooling wall 18 H is determined.Specific example according to the present invention, the second water-cooling wall 16 and third water-cooling wall 18
The distance between H can be 14 circular cylinder radius of radiation waste pot 1/12-1/8.Thus, it is possible to guarantee being smoothly discharged for synthesis gas,
If the width of synthesis gas data feedback channel is too small, synthesis gas can not be smoothly discharged, the synthesis gas down going channel water cooling if excessive
Shielding pipe number will be reduced, and influence heat exchange efficiency, and synthesis gas down going channel is easy slagging.
According to still another embodiment of the invention, with reference to Fig. 1, the lower header 161 of the second water-cooling wall 16 and each long water cooling
The lower header 173 of screen 171, the lower header 174 of each short water-cooling screen 172, the lower header (not shown) of third water-cooling wall 18 are connected
And it is connected with the cooling water inlet pipe 175 for passing through 14 lower part of radiation waste pot；The upper collecting chamber 162 of second water-cooling wall 16 and each length
The upper collecting chamber 176 of water-cooling screen 171, the upper collecting chamber 177 of each short water-cooling screen 172, third water-cooling wall 18 upper collecting chamber (not shown)
It is connected and is connected with the cooling water outlet pipe 178 for passing through 14 top of radiation waste pot.
According to still another embodiment of the invention, with reference to Fig. 1, the lower section of radiation waste pot 14 and and spoke is arranged in deslagging pond 15
The bottom end for penetrating useless pot 14 is connected, and the bottom in deslagging pond 15 has slag-drip opening 103.Specifically, the synthesis after pot heat exchange of giving up via radiation
Gas is discharged from synthesis gas data feedback channel, and entrained part lime-ash falls under gravity to deslagging pond in synthesis gas.
According to still another embodiment of the invention, with reference to Fig. 1, convection current is given up, and pot 200 is interior to be equipped with water cooling tube 21, and convection current is useless
Pot 200 has crude synthesis gas import 201, syngas outlet 202 and ash hole 203, crude synthesis gas import 201 and syngas outlet
102 are connected, and are suitable for further exchanging heat to the synthesis gas after the heat exchange of synthesis gas data feedback channel, realize the abundant of synthesis gas sensible heat
Recycling, obtains the synthesis gas for meeting temperature requirement.The water cooling tube being arranged in pot specifically, convection current is given up is snakelike water cooling tube.
The full recovery system of coal gasification waste heat according to an embodiment of the present invention is made by the way that radiation waste pot is arranged below gasification furnace
It obtains the high-temperature synthesis gas that vaporizer obtains to be directly entered in radiation waste pot, and the synthesis gas that water-cooling wall limits in radiation waste pot
The water-cooling screen group that setting is made of multiple long water-cooling screens and multiple short water-cooling screens in down going channel, more existing common water-cooling screen
The blocking for not easily leading to synthesis gas down going channel is set, enter back into later in synthesis gas rising passway with the second water-cooling wall and third
Water-cooling wall heat exchange, not only further increases heat exchange area, also extends synthesis gas heat exchanger channels, so that synthesis gas and third water
Cold wall has carried out secondary heat exchange, and Exposure degree is more thorough, and the synthesis gas after heat exchange is set in synthesis gas data feedback channel side wall
Syngas outlet, which supplies to convection current to give up, carries out recuperation of heat in pot.It as a result, can using the full recovery system of coal gasification waste heat of the application
To improve crude synthesis gas Exposure degree efficiency.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of full recovery system of coal gasification waste heat characterized by comprising
Gasification furnace, the gasification furnace include:
Shell；
Vaporizer, the vaporizer include:；
First water-cooling wall, first water-cooling wall are located in the vaporizer, and the vaporizer bottom crimp forms slag notch；
Coal-water slurry nozzle, the water-coal-slurry are located at the top of the shell；
Radiation waste pot, the radiation waste pot are located at below the vaporizer and are connected to the slag notch, the radiation waste pot packet
It includes:
Syngas outlet, the syngas outlet are located at the top of the radiation waste pot side wall；
Second water-cooling wall, second water-cooling wall are arranged in the radiation waste pot, and second water-cooling wall is formed under synthesis gas
Row of channels；
Water-cooling screen group, the water-cooling screen group include multiple long water-cooling screens and multiple short water-cooling screens, the multiple long water-cooling screen and institute
It states multiple short water-cooling screens and in the synthesis gas down going channel and circumferentially distributed, each long water-cooling screen and each institute is set
Short water-cooling screen is stated to be extended from second water-cooling wall to the central axis direction of the synthesis gas down going channel；
Third water-cooling wall, the third water-cooling wall are located at outside second water-cooling wall, and the third water-cooling wall and described second
The synthesis gas data feedback channel for being connected to the synthesis gas down going channel and the syngas outlet is formed between water-cooling wall；
Wherein, the lower header of second water-cooling wall, each water-cooling screen group lower header and the third water-cooling wall under
Header is connected and is connected with the cooling water inlet pipe for passing through radiation waste pot lower part；
The upper collecting chamber phase of the upper collecting chamber of second water-cooling wall, the upper collecting chamber of each water-cooling screen group and the third water-cooling wall
The cooling water outlet pipe that Lian Bingyu passes through radiation waste pot top is connected,
Deslagging pond, the deslagging pond are located at the lower section of the radiation waste pot and are connected with radiation waste the bottom of a pan end, the deslagging
The bottom in pond has slag-drip opening；
Convection current is given up pot, and the convection current, which is given up, is equipped with water cooling tube in pot, and the convection current cookware that gives up has crude synthesis gas import, synthesis gas
Outlet and ash hole, the crude synthesis gas import are connected with the syngas outlet.
2. system according to claim 1, which is characterized in that the multiple long water-cooling screen and the multiple short water-cooling screen edge
The synthesis gas down going channel circumferential direction transpostion interval distribution.
3. system according to claim 2, which is characterized in that arrange 1-2 between long water-cooling screen described in each adjacent two
The short water-cooling screen.
4. system according to claim 2, which is characterized in that per the adjacent long water-cooling screen between the short water-cooling screen
Or the angle between every two adjacent short cold water screens is 15-45 degree.
5. system according to claim 1, which is characterized in that the total number of the long water-cooling screen and the short water-cooling screen is
8-24.
6. system according to claim 1, which is characterized in that each long water-cooling screen has 6-15 root water cooling tube.
7. system according to claim 1, which is characterized in that each short water-cooling screen has 3-6 root water cooling tube.
8. system according to claim 1, which is characterized in that the long water-cooling screen and second water-cooling wall pass through fin
It is connected, the width of the long water-cooling screen is the 1/11-1/4 of the synthesis gas down going channel radius.
9. system according to claim 1, which is characterized in that the short water-cooling screen and second water-cooling wall pass through fin
It is connected, the width of the short water-cooling screen is the 2/35-1/11 of the synthesis gas down going channel radius.
10. system according to claim 1, which is characterized in that the water cooling tube being arranged in the useless pot of the convection current is snakelike water
Cold pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811377836.8A CN109504467A (en) | 2018-11-19 | 2018-11-19 | The full recovery system of coal gasification waste heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811377836.8A CN109504467A (en) | 2018-11-19 | 2018-11-19 | The full recovery system of coal gasification waste heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109504467A true CN109504467A (en) | 2019-03-22 |
Family
ID=65749078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811377836.8A Pending CN109504467A (en) | 2018-11-19 | 2018-11-19 | The full recovery system of coal gasification waste heat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109504467A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202284195U (en) * | 2011-09-28 | 2012-06-27 | 神华集团有限责任公司 | All-waste boiler process entrained flow gasification furnace set |
| CN103305283A (en) * | 2013-07-02 | 2013-09-18 | 煤炭科学研究总院 | Gasification device and method for preparing gas from high-efficiency coal water slurry |
| CN204434565U (en) * | 2015-02-04 | 2015-07-01 | 中国五环工程有限公司 | With the vapourizing furnace of radiation waste pot |
| CN209383719U (en) * | 2018-11-19 | 2019-09-13 | 清华大学 | The full recovery system of coal gasification waste heat |
-
2018
- 2018-11-19 CN CN201811377836.8A patent/CN109504467A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202284195U (en) * | 2011-09-28 | 2012-06-27 | 神华集团有限责任公司 | All-waste boiler process entrained flow gasification furnace set |
| CN103305283A (en) * | 2013-07-02 | 2013-09-18 | 煤炭科学研究总院 | Gasification device and method for preparing gas from high-efficiency coal water slurry |
| CN204434565U (en) * | 2015-02-04 | 2015-07-01 | 中国五环工程有限公司 | With the vapourizing furnace of radiation waste pot |
| CN209383719U (en) * | 2018-11-19 | 2019-09-13 | 清华大学 | The full recovery system of coal gasification waste heat |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102782096A (en) | System and method for cooling syngas produced from a gasifier | |
| CN100575782C (en) | The boiler hearth of circulating fluidized bed of band heating screen | |
| CN102071065A (en) | Back flow coal gasification device | |
| CN209481583U (en) | The gasification system of high-temperature synthesis gas total heat recovery | |
| CN209397167U (en) | Radiation waste pot heat recovery apparatus with Quench | |
| CN209383719U (en) | The full recovery system of coal gasification waste heat | |
| CN113072980B (en) | Downward full waste boiler entrained flow bed gasification equipment of superheated steam and coal chemical system | |
| CN209383718U (en) | The full recovery system of coal gasification waste heat | |
| CN209481591U (en) | Recycle the gasification system of high-temperature synthesis gas heat | |
| CN104312633B (en) | Overhead type multi nozzle of gasification furnace | |
| CN209481593U (en) | The full recovery system of coal gasification waste heat | |
| CN109504467A (en) | The full recovery system of coal gasification waste heat | |
| CN209481592U (en) | The full recovery system of coal gasification waste heat | |
| CN109340727A (en) | Radiation and convection integrated steam generating device | |
| CN200996613Y (en) | Wind and water co-cooling connecting box of slag cooler for discharging circulation fluidized bed boiler base slag | |
| CN209383714U (en) | The full recovery system of multiinjector waste heat | |
| CN109504461A (en) | Recycle the gasification system of high-temperature synthesis gas heat | |
| CN209481597U (en) | Radiation waste pot Quench integration heat recovery apparatus | |
| CN209481584U (en) | Multi nozzle of gasification furnace with recuperation of heat | |
| CN109504451A (en) | The full recovery system of multiinjector waste heat | |
| CN209481595U (en) | Radiation waste pot heat recovering device with soot blowing | |
| CN109321284A (en) | Radiation waste pot heat recovery apparatus with Quench | |
| CN209481596U (en) | Radiation waste pot Quench integral type heat recovering device | |
| CN209481585U (en) | Multi nozzle of gasification furnace with recuperation of heat | |
| CN109504466A (en) | Radiation waste pot Quench integration heat recovery apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190326 Address after: 100084 Tsinghua Yuan, Beijing, Haidian District Applicant after: Tsinghua University Applicant after: Shanxi Clean Energy Research Institute, Tsinghua University Address before: 030032 No. 10 Electronic Street, Taiyuan City, Shanxi Province Applicant before: Shanxi Clean Energy Research Institute, Tsinghua University |
|
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |