CN106221813A - A kind of " water bag oxygen " preventing furnace wall scaling loss rotates by force powder coal gasification furnace - Google Patents
A kind of " water bag oxygen " preventing furnace wall scaling loss rotates by force powder coal gasification furnace Download PDFInfo
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- CN106221813A CN106221813A CN201610554990.2A CN201610554990A CN106221813A CN 106221813 A CN106221813 A CN 106221813A CN 201610554990 A CN201610554990 A CN 201610554990A CN 106221813 A CN106221813 A CN 106221813A
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- gasification
- oxygen
- heater
- fine coal
- jet pipe
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- 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
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/485—Entrained flow gasifiers
- C10J3/487—Swirling or cyclonic gasifiers
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- 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
- C10J3/74—Construction of shells or jackets
- C10J3/76—Water jackets; Steam boiler-jackets
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- 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
- C10J2200/00—Details of gasification apparatus
- C10J2200/15—Details of feeding means
- C10J2200/152—Nozzles or lances for introducing gas, liquids or suspensions
-
- 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
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
-
- 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
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0959—Oxygen
-
- 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
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0973—Water
- C10J2300/0976—Water as steam
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Air Supply (AREA)
Abstract
A kind of " water bag oxygen " preventing furnace wall scaling loss rotates by force powder coal gasification furnace, the present invention relates to a kind of powder coal gasification furnace, the present invention solves in prior art that body of heater gasifying agent sprays into areas adjacent gasification stove internal wall face and is easily burnt.This problem can cause gasification furnace often to stop after occurring, whole production line is caused all to be stopped transport, the problem causing great economic loss, it includes fine coal burner, gasification body of heater, water-cooling wall, synthesis gas channel, swirl vane, multiple steam jet pipes and multiple oxygen jet pipe, water-cooling wall is that many Vertically tube are arranged side by side composition, water-cooling wall is arranged in gasification furnace body, the top of gasification body of heater is provided with fine coal burner, fine coal passage and steam oxygen mixed gas passage it is provided with in fine coal burner, steam oxygen mixed gas passage is positioned at fine coal channel interior, swirl vane is arranged in fine coal burner, the invention belongs to coal gasification field.
Description
Technical field
The present invention relates to a kind of powder coal gasification furnace, be specifically related to a kind of " water bag oxygen " preventing furnace wall scaling loss and rotate by force fine coal
Gasification furnace, belongs to coal gasification field.
Background technology
Coal Gasification Technology is the clean coal technology of high-efficiency cleaning.Gasifying agent rotates by force bed pulverized coal gasification technology and has the intensity of gasification
The advantages such as height, production capacity is big, efficiency of carbon con version is high, Suitability of Coals is strong, the most show up prominently in coal gasification field.In order to
Solve present in existing bed pulverized coal gasification technology that gasification stove internal wall face dross is uneven, the problems such as instability of catching fire, the applicant
Early stage application is a series of rotates by force the relevant Chinese invention patent of bed pulverized coal gasification technology such as to gasifying agent
CN201510578780.2、CN105087073A、CN201510579029.4、CN201510578779.X、
CN201510579028.X, CN201510579030.7, CN201510579057.6 and CN201510578724.9.These patents
In description to gasification furnace structure, although above patent of invention solves the problems such as gasification stove internal wall face dross is uneven, but
Remaining the hidden danger that following possibility affect gasification furnace safety, economic stability is run, body of heater gasifying agent sprays into areas adjacent gas
Change stove internal face to be easily burnt.This problem can cause gasification furnace often to stop after occurring, and gasification furnace is as chemical enterprise
Beginning of production, once stops, and causes whole production line all to be stopped transport, and whole production line is stopped transport and once caused great economic to enterprise
Loss.
Summary of the invention
The present invention solves in prior art that body of heater gasifying agent sprays into areas adjacent gasification stove internal wall face to be easily burnt.Should
Problem can cause gasification furnace often to stop after occurring, and causes whole production line all to be stopped transport, the problem causing great economic loss,
And then provide a kind of " water bag oxygen " preventing furnace wall scaling loss to rotate by force powder coal gasification furnace.
The present invention solves that the problems referred to above adopt the technical scheme that: it include fine coal burner, gasification body of heater, water-cooling wall,
Synthesis gas channel, swirl vane, multiple steam jet pipe and multiple oxygen jet pipe, water-cooling wall be many Vertically tube also
Row arranges composition, and water-cooling wall is arranged in gasification furnace body, and gasification hearth is the revolving body having water-cooling wall to surround, the end of gasification body of heater
End is provided with slag bath, and the top of gasification body of heater is provided with fine coal burner, is provided with fine coal passage and steam oxygen mix in fine coal burner
Gas passage, steam oxygen mixed gas passage is positioned at fine coal channel interior, and swirl vane is arranged in fine coal burner, each
Steam jet pipe correspondence horizontal alignment is provided with oxygen jet pipe, and multiple steam jet pipes from top to bottom set gradually, and often
One end of individual steam jet pipe passes the sidewall of gasification body of heater and is arranged in gasification hearth, one end of each oxygen jet pipe
Passing the sidewall of gasification body of heater and be arranged in gasification hearth, the centrage of fine coal burner overlaps with the centrage of gasification body of heater,
Outside each steam jet pipe, a along the line is L to the vertical dimension of gasification body of heater centrage, each oxygen jet pipe outer edge
The numerical value that vertical dimension is M, M of the line b extremely gasification body of heater centrage numerical value less than L.
The invention has the beneficial effects as follows:
1, the gasification furnace of the present invention is in same horizontal cross-section, and temperature is that the steam of 150～300 DEG C passes through steam
Jet pipe 7 sprays in gasification hearth 3 with the speed of 50～200m/s, and temperature is that the oxygen of 150～300 DEG C is sprayed by oxygen simultaneously
Mouth pipe 7-1 cuts in spraying into gasification hearth 3 with the speed edge of 100～200m/s, sprays into region shape at body of heater oxygen and steam
Become the flow field structure of " water bag oxygen ".Due to adherent flowing for steam, and the chemical reaction that steam and fine coal occur is
Reduction reaction, strong reaction is absorbed heat, therefore, it is possible to effectively reduce the temperature of nozzle area, protects water-cooling wall.The present invention provides
Gasifier water-cooling wall surface temperature is low, it is possible to effectively protect wall-cooling surface, and wall-cooling surface is long for service life.Existing gasifying agent rotates by force
In bed pulverized coal gasification technology, the gasifying agent spout arranged along sidewall of the furnace body face tangentially sprays into oxygen quality percentage in the gasifying agent of burner hearth
Ratio, higher than 60%, has therefore been formed about oxygen-rich area at gasifying agent spout outlet.The gasifying agent tangentially sprayed into washes away near spout
Liquid slag blanket time, the oxygen-enriched combusting that carbon in the oxygen in gasifying agent and slag blanket is strong on wall-cooling surface, burner hearth can be caused
Generation high-temperature region at wall, through numerical simulation calculation, this regional temperature is up to 2400～3000 DEG C, can serious ablation gasification furnace
Internal face.And in the present invention, owing in spraying into region at sidewall of the furnace body face gasifying agent, steam is separately supplied with oxygen, same
On horizontal cross-section, outer layer sprays into steam, and internal layer sprays into oxygen in the same direction, has therefore become outer layer to be steam at freeze profile, internal layer
For oxygen, i.e. the rotational flow field structure of " water bag oxygen ".Due to adherent flowing for steam, and steam is sent out with the carbon in slag blanket
Raw chemical reaction is reduction reaction, and strong reaction is absorbed heat, therefore, it is possible to effectively reduce body of heater gasifying agent to spray into the wall in region
Temperature, protects wall-cooling surface, and through numerical simulation calculation, this regional temperature is about 1600 DEG C, is in the temperature that furnace wall can be born
In the range of degree, therefore gasification stove internal wall face is long for service life, reduces the generation of gasification furnace parking phenomenon, time-consuming, Jin Erti
High business economic profit.
Accompanying drawing explanation
Fig. 1 is the integrally-built front view of the present invention, and Fig. 2 is the A-A direction view of Fig. 1.
Detailed description of the invention
Detailed description of the invention one: combine the bright present embodiment of Fig. 1-Fig. 2, one described in present embodiment prevents furnace wall scaling loss
" water bag oxygen " rotate by force powder coal gasification furnace, it include fine coal burner 1, gasification body of heater 2, water-cooling wall 4, synthesis gas channel 5, rotation
Stream blade 9, multiple steam jet pipe 7 and multiple oxygen jet pipe 7-1, water-cooling wall 4 is that many Vertically tube are arranged side by side group
Becoming, water-cooling wall 4 is arranged in gasification body of heater 2, and gasification hearth 3 is the revolving body having water-cooling wall to surround, and the bottom of gasification body of heater 2 sets
There are slag bath 6, the top of gasification body of heater 2 to be provided with fine coal burner 1, are provided with fine coal passage 10 in fine coal burner 1 and steam oxygen mixes
Closing gas passage 11, it is internal that steam oxygen mixed gas passage 11 is positioned at fine coal passage 10, and swirl vane 9 is arranged on fine coal and burns
In mouth 1, the corresponding horizontal alignment of each steam jet pipe 7 is provided with oxygen jet pipe 7-1, and multiple steam jet pipes 7 are by up to
Under set gradually, and one end of each steam jet pipe 7 through the gasification sidewall of body of heater 2 and is arranged in gasification hearth 3,
One end of each oxygen jet pipe 7-1 passes the sidewall of gasification body of heater 2 and is arranged in gasification hearth 3, the center of fine coal burner 1
Line overlaps with the centrage of gasification body of heater 2, outside each steam jet pipe 7 a along the line extremely gasify body of heater 2 centrage vertical away from
From for L, outside each oxygen jet pipe 7-1 b along the line to the numerical value that vertical dimension is M, M of gasification body of heater 2 centrage less than L's
Numerical value.
Detailed description of the invention two: combine Fig. 1 and present embodiment is described, a kind of furnace wall scaling loss that prevents described in present embodiment
" water bag oxygen " rotates by force powder coal gasification furnace, and the radius of gasification hearth 3 is that the numerical value that numerical value is 0.7r, L of r, M is equal with r.So that
In making stove, rotating flow field intensity is maximum, makes steam be close to furnace wall and flows downward, effectively protects wall-cooling surface, other composition and
Annexation is identical with detailed description of the invention one.
Detailed description of the invention three: combine Fig. 1 and present embodiment is described, a kind of furnace wall scaling loss that prevents described in present embodiment
" water bag oxygen " rotates by force powder coal gasification furnace, and it also includes multiple vapor flow regulation valve 8 and multiple oxygen flow rate adjusting valve 8-
1, each steam jet pipe 7 is provided with a vapor flow regulation valve 8, each oxygen jet pipe 7-1 is provided with one
Individual oxygen flow rate adjusting valve 8-1.Control the vapor flow in steam jet pipe 7 by vapor flow regulation valve 8, pass through
The flow of oxygen in oxygen flow rate adjusting valve 8-1 control oxygen jet pipe 7-1.Other composition and annexation and specific embodiment party
Formula two is identical.
Operation principle
Oxygen enters the steam oxygen mixed gas passage 11 in fine coal burner 1 with steam, after flowing through swirl vane 9
Rotation sprays into gasification hearth 3, is formed on gasification hearth 3 top and rotates downward steam oxygen mix air-flow.Fine coal air-flow with
Steam, oxygen mix air-flow rotating Vortex together flow, and both flow process constantly mix.Fine coal mixes with steam, oxygen
After the high-temperature synthesis gas that conjunction air-flow sucks back with Central backflow area volume mixes, lighted by it, formed at gasification hearth 3 top combustion
Slag.In same horizontal cross-section, steam sprays into gasification furnace by described steam spout 7 with the speed of 50～200m/s
Thorax, oxygen cuts to spraying into gasification hearth 3, due at gasification furnace by oxygen spout 7-1 with the speed edge of 100～200m/s simultaneously
Limited by furnace wall in thorax, formed the flow field structure of strong " the water bag oxygen " rotated.Under the injection of strong swirling eddy, powder
Slag that coal combustion is formed, high-temperature synthesis gas and the steam that volume is inhaled, oxygen air-flow together with rotate to dirty near wall district
Dynamic；By strongly rotating acting on of the centrifugal force that produces, the slag of about 80% is got rid of on wall, formed one layer uniform the thickest
Liquid slag blanket.High-temperature synthesis gas and gasifying agent air-flow that the remaining slag of about 20%, volume are inhaled mix continuation closely
Wall region rotates and flows downward.Slag blanket slowly flows downward along wall, and the strong mixed airflow rotated the most constantly washes away wall
Slag blanket, in the process, steam and oxygen in mixed airflow constantly occur with the slag in wall slag blanket, mixed airflow
Strong gasification reaction.Reacted wall slag blanket continues to flow downward along wall, is discharged by slag-drip opening after entering slag bath cooling.Rotation
Mixed airflow continuous generating gasification reaction under turning to, becomes the synthesis gas flow of high temperature when arriving gasification furnace bottom.Due to mixed
Conjunction air-flow is in nearly furnace wall district rotational flow, and the pressure at burner hearth center is relatively low, and the synthesis gas of gasification furnace bottom is made by volume suction
With, at burner hearth central upward flow, form stable high temperature center recirculating zone.The high-temperature synthesis gas that high temperature center recirculating zone volume is inhaled
It is back to gasification furnace top, lights the fine coal air-flow sprayed into by fine coal burner 1, be then again introduced near wall region and rotate fortune downwards
Dynamic.Finally, the synthesis gas of generation flows out from synthesis gas passage 5.
Embodiment:
The gasification furnace of the 80000Nm3/h gas making amount of one application specific embodiment of the invention one, it is contemplated that run 4 years water
There is not scaling loss in cold wall, it is ensured that persistently operation 4 years is not parking, compares other technology, reduces economic loss 1.6 hundred million yuan.Numerical value
Calculating checking is learnt: it is 1600 DEG C that upper of furnace body gasifying agent sprays into region maximum temperature.Certain chemical plant uses the one of general technology
The gasifying agent of platform 80000Nm3/h gas making amount rotates by force powder coal gasification furnace, and numerical computations checking is learnt: upper of furnace body gasifying agent sprays
Entering region maximum temperature is 3000 DEG C, and actual motion finds the easy scaling loss of internal face, stops because of internal face scaling loss every year on average
Once, often stop and once cause total economic loss about 40,000,000 yuan.
Claims (3)
1. " the water bag oxygen " preventing furnace wall scaling loss rotates by force powder coal gasification furnace, it is characterised in that: it includes fine coal burner
(1), gasification body of heater (2), water-cooling wall (4), synthesis gas channel (5), swirl vane (9), multiple steam jet pipe (7) and many
Individual oxygen jet pipe (7-1), water-cooling wall (4) is that many Vertically tube are arranged side by side composition, and water-cooling wall (4) is arranged on gasification body of heater
(2) in, gasification hearth (3) is the revolving body having water-cooling wall to surround, and the bottom of gasification body of heater (2) is provided with slag bath (6), and gasify body of heater
(2) top is provided with fine coal burner (1), is provided with fine coal passage (10) and steam oxygen mixed gas leads in fine coal burner (1)
Road (11), it is internal that steam oxygen mixed gas passage (11) is positioned at fine coal passage (10), and swirl vane (9) is arranged on fine coal and burns
In mouth (1), the corresponding horizontal alignment of each steam jet pipe (7) is provided with oxygen jet pipe (7-1), multiple steam jet pipes
(7) from top to bottom set gradually, and one end of each steam jet pipe (7) passes the sidewall of gasification body of heater (2) and is arranged on
In gasification hearth (3), one end of each oxygen jet pipe (7-1) passes the sidewall of gasification body of heater (2) and is arranged on gasification hearth
(3), in, the centrage of fine coal burner (1) overlaps with the centrage of gasification body of heater (2), each steam jet pipe (7) outer edge
Line a is L to the vertical dimension of the body of heater that gasifies (2) centrage, each oxygen jet pipe (7-1) outside b along the line to the body of heater that gasifies (2)
The vertical dimension of centrage is the numerical value numerical value less than L of M, M.
A kind of " water bag oxygen " preventing furnace wall scaling loss rotates by force powder coal gasification furnace, it is characterised in that:
The numerical value that the numerical value that radius is r, M is 0.7r, L of gasification hearth (3) is equal with r.
A kind of " water bag oxygen " preventing furnace wall scaling loss rotates by force powder coal gasification furnace, it is characterised in that:
It also includes multiple vapor flow regulation valve (8) and multiple oxygen flow rate adjusting valve (8-1), each steam jet pipe (7)
On vapor flow regulation valve (8) is installed, each oxygen jet pipe (7-1) is provided with an oxygen flow rate adjusting valve
(8-1)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610554990.2A CN106221813B (en) | 2016-07-14 | 2016-07-14 | A kind of " the water packet oxygen " preventing furnace wall scaling loss rotates by force powder coal gasification furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610554990.2A CN106221813B (en) | 2016-07-14 | 2016-07-14 | A kind of " the water packet oxygen " preventing furnace wall scaling loss rotates by force powder coal gasification furnace |
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| Publication Number | Publication Date |
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| CN106221813A true CN106221813A (en) | 2016-12-14 |
| CN106221813B CN106221813B (en) | 2018-10-02 |
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| CN201610554990.2A Expired - Fee Related CN106221813B (en) | 2016-07-14 | 2016-07-14 | A kind of " the water packet oxygen " preventing furnace wall scaling loss rotates by force powder coal gasification furnace |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109355101A (en) * | 2018-09-18 | 2019-02-19 | 华中科技大学 | A kind of system that Photospot solar generates steam and drives solid waste plasma gasification |
| CN110079363A (en) * | 2019-04-04 | 2019-08-02 | 中国寰球工程有限公司 | Petroleum coke high-temperature gasification nozzle |
| CN110964572A (en) * | 2019-12-12 | 2020-04-07 | 郑州轻工业大学 | Gasification agent tangent circle strong rotation pulverized coal gasification furnace device for preventing furnace wall burning loss |
| CN110964571A (en) * | 2019-12-12 | 2020-04-07 | 郑州轻工业大学 | Gasification furnace with four tangential corners |
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| CN105199782A (en) * | 2015-09-11 | 2015-12-30 | 哈尔滨工业大学 | Gasification agent, strong-rotating pulverized coal and fly ash mixed-burning gasifier device and method |
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| JP2003113383A (en) * | 2001-10-01 | 2003-04-18 | Babcock Hitachi Kk | Gas flow layer gasification furnace, method of gasification and methane-reforming burner used therefor and method for reforming |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109355101A (en) * | 2018-09-18 | 2019-02-19 | 华中科技大学 | A kind of system that Photospot solar generates steam and drives solid waste plasma gasification |
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| CN110079363A (en) * | 2019-04-04 | 2019-08-02 | 中国寰球工程有限公司 | Petroleum coke high-temperature gasification nozzle |
| CN110079363B (en) * | 2019-04-04 | 2024-02-20 | 中国寰球工程有限公司 | Petroleum coke high-temperature gasification nozzle |
| CN110964572A (en) * | 2019-12-12 | 2020-04-07 | 郑州轻工业大学 | Gasification agent tangent circle strong rotation pulverized coal gasification furnace device for preventing furnace wall burning loss |
| CN110964571A (en) * | 2019-12-12 | 2020-04-07 | 郑州轻工业大学 | Gasification furnace with four tangential corners |
| CN110964572B (en) * | 2019-12-12 | 2021-08-20 | 郑州轻工业大学 | Gasification agent tangent circle strong rotation pulverized coal gasification furnace device for preventing furnace wall burning loss |
| CN110964571B (en) * | 2019-12-12 | 2021-08-20 | 郑州轻工业大学 | Gasification furnace with four tangential corners |
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| Publication number | Publication date |
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| CN106221813B (en) | 2018-10-02 |
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