CN106085509A - Coal dust and water-coal-slurry gasification process and gasification furnace altogether - Google Patents
Coal dust and water-coal-slurry gasification process and gasification furnace altogether Download PDFInfo
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- CN106085509A CN106085509A CN201610407043.0A CN201610407043A CN106085509A CN 106085509 A CN106085509 A CN 106085509A CN 201610407043 A CN201610407043 A CN 201610407043A CN 106085509 A CN106085509 A CN 106085509A
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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
- C10J3/50—Fuel charging devices
-
- 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
-
- 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
-
- 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
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
- C10J2300/0936—Coal fines for producing producer gas
-
- 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
- C10J2300/0983—Additives
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
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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
One aspect of the present invention provides a kind of coal dust and water-coal-slurry gasification process altogether; in the common gasification of coal dust and water-coal-slurry; when common gasification fluctuation of service, spraying into protection gas in gasification furnace, protection gas forms the protection gas-bearing formation of the vault inwall for protecting gasification furnace.It is an object of the invention to provide a kind of coal gasification method so that in running, arch roof of gasification furnace inwall forms a kind of laminate protective layer.On the other hand, the invention provides above-mentioned coal dust and the water-coal-slurry gasification furnace that gasification process uses altogether.
Description
Technical field
The present invention relates to coal dust and water-coal-slurry field of gasification altogether.
Background technology
Coal gasification is the main path of the secondary energy sources that primary energy changes into cleaning, and its product is fuel gas (coal
Gas), synthesis gas, reducing gases, hydrogen, carbon monoxide.Coal gasification technology combined cycle (IGCC) TRT, synthesis ammonia and
Synthesizing methanol industry, the preparation of pure carbon monoxide, the field such as preparation of pure hydrogen are widely used.
Generally, coal dust gasification needs and adds water vapour as gasifying agent to improve the content of the effective gas in coal gas；And
Coal water slurry gasification, owing to water-coal-slurry water content is bigger, the resolution ratio ratio of water vapour is relatively low.By coal dust and water-coal-slurry same
Carry out common gasification in gasification furnace and can not only improve the content of effective gas in coal gas, and the resolution ratio of water vapour can be improved.
In existing coal dust and water-coal-slurry gasification technology altogether, Publication No. CN103897739A and CN103897740A are public
The coal opened altogether gasification process, gives and rises to a certain degree by furnace temperature, put into from furnace side or furnace roof a kind of material (coal dust or
Water-coal-slurry, and gasifying agent) after gasification is stable, then put into another kind of material (water-coal-slurry or coal dust, and gasification from furnace roof or furnace side
Agent) gasification, adjust subsequently, stable to realize the common gasification of coal dust and water-coal-slurry.Additionally giving furnace side is multiple nozzles, with
And fuel and the proportioning of gasifying agent in various material.
Additionally, furnace side charging, whether percussion flow gasification or rotary-cut are flow gasification, all can realize from different spray nozzles material
Stream stock mutually clashes into blending in burner hearth, and the time of staying increases, and turbulence intensity dramatically increases simultaneously, makes heat and mass speed significantly
Improve, thus improve the efficiency of carbon con version of fuel and the resolution ratio of water vapour.The gasification mode of furnace side charging there is also bigger
Drawback: material upper punch height to be controlled, prevent from washing away the inside vault of gasification furnace；It addition, once nozzle material-feeding is unstable, make
When moving, on one-tenth furnace high-temperature layer, the inside vault jeopardizing gasification furnace, it is necessary for blowing out, changes or keep in repair nozzle to recover its charging
Ability.
Additionally, percussion flow gasification, refer to be symmetrical arranged two in sidewall of the furnace body periphery same level or multiple horizontal plane
Or plural nozzle, the opposed gasification furnace of injecting of gasification materiel clashes into, the contact between strengthening gasification materiel, concurrently angry
Change；Rotary-cut is flow gasification, refers to that sidewall of the furnace body periphery same level or multiple horizontal plane are uniformly distributed multiple nozzle, gasified raw material
Entering burner hearth by nozzle with deflection mode of jet, raw material moves in gasification furnace in spiral circle of contact mode and gasifies.
For problems of the prior art, it is desirable to be able in the case of not reducing gasification furnace performance, reduce gasification
The ablation of the vault inwall of stove and erosion, extend the life-span of arch roof of gasification furnace.
Summary of the invention
For problem present in correlation technique, it is an object of the invention to provide a kind of coal gasification method so that run
During arch roof of gasification furnace inwall form a kind of laminate protective layer.
One aspect of the present invention provides a kind of coal dust and water-coal-slurry gasification process altogether, gasifying altogether of coal dust and water-coal-slurry
Cheng Zhong, when common gasification fluctuation of service, sprays into protection gas in gasification furnace, and protection gas forms the vault for protecting gasification furnace
The protection gas-bearing formation of inwall.
According to the present invention, protection gas is sprayed in gasification furnace with dispersion shape by the furnace roof nozzle of gasification furnace, and at gasification furnace
Interior top umbrella formed below protection gas-bearing formation
According to the present invention, determine that common gasification runs according to the temperature of the vault inwall of gasification furnace the most stable.
According to the present invention, when the temperature of the vault inwall of gasification furnace exceeds predetermined temperature range, gasification runs shakiness altogether
Fixed；And when the temperature of vault inwall of gasification furnace is beyond predetermined temperature range more than 30 DEG C, in gasification furnace, spray into protection
Gas.
According to the present invention, the straying quatity of protection gas the temperature of vault inwall is declined rate controlled 1 DEG C/min～5 DEG C/
Between min.
According to the present invention, determine that common gasification runs according to the change of the inlet amount of the furnace roof nozzle of gasification furnace the most stable.
According to the present invention, when Quality Down more than 20% of furnace roof nozzle material-feeding amount, gasify fluctuation of service altogether, and to
Protection gas is sprayed in gasification furnace.
According to the present invention, the 10%～50% of the slippage that straying quatity is furnace roof nozzle material-feeding amount of protection gas.
According to the present invention, protection gas be the most combustion-supporting gas.
According to the present invention, when spraying into water-coal-slurry and gasifying agent from the sidewall of gasification furnace, and spray into from the top of gasification furnace
When coal dust and gasifying agent, protection gas is one or both mixing in carbon dioxide, nitrogen；When spraying into coal from the sidewall of gasification furnace
Powder and gasifying agent, and when spraying into water-coal-slurry and gasifying agent from the top of gasification furnace, protection gas is carbon dioxide, water smoke, nitrogen
In one or more mixing.
On the other hand, the present invention provides a kind of gasification furnace, the vault inwall including body of heater, being positioned at body of heater top, is arranged on
Furnace roof nozzle on vault inwall and be arranged on the furnace side nozzle of same level height of sidewall of the furnace body, furnace roof nozzle is integrated with
For spraying the outside annular space passage of protection gas, protection gas forms the protection gas-bearing formation for protecting vault inwall.
According to the present invention, the axis of furnace side nozzle has axial drift angle α and radially drift angle β, axial drift angle α and radial direction are inclined
Angle beta meets following condition: 0 °≤α≤30 °, 0 °≤β≤45 °, and can not be 0 ° simultaneously.
According to the present invention, gasification furnace is for above-mentioned coal dust and water-coal-slurry gasification process altogether.
The Advantageous Effects of the present invention is:
A kind of coal dust and water-coal-slurry that the present invention proposes are total to gasification process and gasification furnace, compared to prior art, not only coal
Treating capacity is bigger, and efficiency of carbon con version is high, it is also possible to realize as necessary by spraying into protection gas in gasification furnace, at the arch of gasification furnace
Top covers one layer of protection gas, to protect the inside vault of gasification furnace not by high temperature ablation or gasification materiel erosion.Can be necessary
Time protection gasification furnace inside vault, extend the arch roof of gasification furnace life-span, reduce blowing out maintenance frequency.
Accompanying drawing explanation
Fig. 1 is illustrated that the schematic diagram of the structure of the gasification furnace of the present invention.
Fig. 2 is illustrated that the schematic diagram of the structure of the furnace roof nozzle of the gasification furnace of the present invention.
Fig. 3 is illustrated that the partial structurtes schematic diagram of the furnace side nozzle of the gasification furnace of the present invention
Detailed description of the invention
Embodiment with reference to shown in accompanying drawing is open.It will be appreciated, however, that the disclosed embodiments only can with various and
The embodiment that alternative form shows.Accompanying drawing is not necessarily drawn to scale, and it is specific to show to zoom in or out some features
The details of parts.Disclosed concrete structure and functional details should not be construed as restriction, but as being used for instructing this area
How technical staff puts into practice the representative basis of the disclosure.
One aspect of the present invention provides a kind of coal dust and water-coal-slurry gasification process altogether, gasifying altogether of coal dust and water-coal-slurry
Cheng Zhong, when common gasification fluctuation of service, sprays into protection gas in gasification furnace, and protection gas forms the vault for protecting gasification furnace
The protection gas-bearing formation of inwall.Present invention is primarily targeted at, in coal dust and water-coal-slurry gasification altogether, when monitoring or predicting
When the internal vault of gasification furnace exists ablation or erosion risk, in gasification furnace, spray into protection gas, below the interior vault of gasification furnace
Forming protection gas-bearing formation, the heat zone of upper shifting or the material of upper punch is protecting the injection of gas to sweeping away, and reduces temperature or upper impulsive force,
It is allowed to internal vault is not constituted injury, extends the life-span of vault.
Wherein, protection gas used is the most combustion-supporting gas, can be such as helium, neon, argon, krypton, the noble gas of xenon, nitrogen
One or more mixing in gas and water mist, water vapour, carbon dioxide gas etc..It is appreciated that in other embodiments of the invention
In, combustion-supporting gas can not be other gas beyond embodiment, and the present invention does not limits at this.Vault inwall according to gasification furnace
Temperature whether determine that common gasification runs stable, when the temperature of vault inwall of gasification furnace is beyond predetermined temperature range, gas altogether
Change fluctuation of service；And when the temperature of vault inwall of gasification furnace is beyond predetermined temperature range more than 30 DEG C, to gasification furnace
Inside spray into protection gas.In a preferred embodiment, 50 DEG C can be arranged on beyond predetermined temperature range, protect spraying into of gas simultaneously
Measure and the temperature of vault inwall is declined rate controlled between 1 DEG C/min～5 DEG C/min.
It is the most stable, when furnace roof nozzle enters that the change of the inlet amount of the furnace roof nozzle according to gasification furnace determines that common gasification runs
During Quality Down more than 20% of doses, gasify fluctuation of service altogether, and sprays into protection gas in gasification furnace.Preferred in the present invention
In embodiment, during Quality Down more than 50% of furnace roof nozzle material-feeding amount, start in gasification furnace, spray into protection gas；Protection gas
Straying quatity is the 10%～50% of the slippage of furnace roof nozzle material-feeding amount, in a preferred embodiment of the invention, and the spray of protection gas
Enter the 20%～30% of the slippage that amount is furnace roof nozzle material-feeding amount.Wherein, 10%～50% and 20%～30% refer to
The gross mass of the weight contrast furnace roof nozzle material-feeding that furnace roof nozzle material-feeding loses.
With reference to Fig. 1, on the other hand, the present invention provides a kind of gasification furnace 1, including body of heater, the vault that is positioned at body of heater top
Wall 4, the furnace roof nozzle 2 being arranged on vault inwall 4 and the furnace side nozzle 3 of the same level height that is arranged on sidewall of the furnace body,
Furnace roof nozzle 2 is integrated with the outside annular space passage for spraying protection gas, and protection gas forms the protection for protecting vault inwall 4
Gas-bearing formation.
For achieving the above object, with reference to Fig. 1, need to arrange nozzle, the stove of gasification furnace 1 at the top of gasification furnace 1 and sidewall
Pipe top nozzle 2 is coaxial many annular spaces channel design as shown in Figure 2, and protection gas is sprayed with dispersion shape by the furnace roof nozzle 2 of gasification furnace 1
Enter in gasification furnace, and the top umbrella formed below protection gas-bearing formation in gasification furnace 1.As it is shown on figure 3, the axis of furnace side nozzle
Have certain axially drift angle α and radially drift angle β, straight line AB be the axis of furnace side nozzle, some O is any one on straight line AB
Point, straight line AC and some O' are on the horizontal cross-section of a certain height of body of heater, and straight line AC crosses the center of this horizontal cross-section, and O' point is a little
O is in the upright projection of this plane, and ∠ OAO' is the axial drift angle α of furnace side nozzle, and the radial direction that ∠ O'AC is furnace side nozzle is inclined
Angle beta.
With reference to Fig. 2, the inner side annular space passage being internally provided with at least 3 coaxial surrounding of outside annular space passage 24, inner side
Annular space passage is followed successively by the first gasifying agent passage (i.e. central passage) the 21, first fuel channel the 22, second gasifying agent from inside to outside
Passage 23.Outside annular space passage 24 is protection gas passage.The bottom outside deflection certain angle R of protection gas passage, in the present invention
Embodiment in, the scope of certain angle R is between 15 °～75 °, and in a preferred embodiment, the scope of certain angle R exists
Between 30 °～60 °.
With reference to Fig. 3, in an embodiment of the present invention, the axis of furnace side nozzle has axial drift angle α and radial direction drift angle β,
Axially drift angle α and radially drift angle meet following condition: 0 °≤α≤30 °, 0 °≤β≤45 °, and can not be 0 ° simultaneously.Preferably
In embodiment, axial drift angle α and radially drift angle β meet following condition: 0 ° of α≤15 °, 0 ° of β≤22.5 °, excellent in the present invention
Selecting in embodiment, furnace side nozzle is 4.Additionally, in the present invention, also include for above-mentioned coal dust and water-coal-slurry gasification process altogether
Gasification furnace.
Referring to figs. 1 to Fig. 3, when spraying into water-coal-slurry and gasifying agent from the furnace side nozzle 3 of gasification furnace 1, and from gasification furnace
When top sprays into coal dust and gasifying agent, protection gas is one or both mixing in carbon dioxide, nitrogen；When from gasification furnace 1
Furnace side nozzle 3 sprays into coal dust and gasifying agent, and when furnace roof nozzle 2 water-coal-slurry of gasification furnace and gasifying agent, protection gas is two
One or more mixing in carbonoxide, water smoke, nitrogen.Described below is above-mentioned gasification furnace 1 and coal dust and water-coal-slurry gas altogether
Two different embodiments of change method:
Referring to figs. 1 to Fig. 3, in the first embodiment, four furnace side nozzles 3 are evenly distributed on the side of gasification furnace sustained height
On wall, water-coal-slurry and gasifying agent spray in gasification furnace with the axial drift angle α of 15 ° and the radial direction drift angle β of 18 °, coal dust and gasifying agent
Spraying in gasification furnace from furnace roof nozzle 2, coal dust and water-coal-slurry carry out common gasification in stove.The outside annular space passage of furnace roof nozzle 2
24 is protection gas passage, and the outside deflection in bottom 20 ° of protection gas passage is provided with vane type eddy flow near exit in passage
Device, protection gas is carbon dioxide.When the inlet amount finding coal nozzle declines, inlet amount gross mass includes that coal dust is gentle
Agent, when slippage reaches 30%, starts spraying into of carbon-dioxide protecting gas, and the straying quatity of carbon-dioxide protecting gas is charging
The 25% of slippage, by spraying into the vault inwall 4 of carbon-dioxide protecting gas shielded gasification furnace.During spray protection gas, investigation
The reason that coal nozzle inlet amount declines, and get rid of.Until the inlet amount of coal nozzle is recovered, then stop the spray of protection gas
Enter.
Referring to figs. 1 to Fig. 3, in a second embodiment, four furnace side nozzles 3 are evenly distributed on the side of gasification furnace sustained height
On wall, coal dust and gasifying agent spray in gasification furnace 1 with the axial drift angle α of 10 ° and the radial direction drift angle β of 15 °, water-coal-slurry and gasifying agent
Spraying in gasification furnace from furnace roof nozzle 2, coal dust and water-coal-slurry carry out common gasification in stove.The outside annular space passage of furnace roof nozzle 2
24 is protection gas passage, the outside deflection in bottom 30 ° of protection gas passage, and not only sets close to exit in protection gas passage
It is equipped with vane type cyclone, is additionally provided with nebulizer, spray after protection gas is atomized further.In gasification furnace 1 vault inwall 4
It is provided with device for detecting temperature, the temperature of vault inwall 4 can be understood in real time.During coal dust and water-coal-slurry gasify altogether,
Fluctuated in the range of reasonable temperature by the temperature of monitoring vault inwall 4, such as 200 DEG C ± 30 DEG C (170 DEG C to 230 DEG C), one
Denier temperature it is necessary to start the spraying into of water spray protection gas, promotes dome temperature to decline more than 250 DEG C, fall off rate control 1 DEG C/
Between min～5 DEG C/min.Meanwhile, the problem causing temperature anomaly to fluctuate is got rid of.When being down to less than 230 DEG C at a temperature of when,
Stop spraying into of water smoke.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art
For Yuan, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of being made,
Equivalent, improvement etc., should be included within the scope of the present invention.
Claims (13)
1. a coal dust and water-coal-slurry gasification process altogether, it is characterised in that in the common gasification of coal dust and water-coal-slurry, when altogether
During gasification fluctuation of service, spraying into protection gas in gasification furnace, described protection gas forms the vault for protecting described gasification furnace
The protection gas-bearing formation of inwall.
Coal dust the most according to claim 1 and water-coal-slurry gasification process altogether, it is characterised in that described protection gas is by described
The furnace roof nozzle of gasification furnace sprays in described gasification furnace with dispersion shape, and the top umbrella formed below in described gasification furnace is protected
Protect gas-bearing formation.
Coal dust the most according to claim 1 and water-coal-slurry gasification process altogether, it is characterised in that according to the arch of described gasification furnace
The temperature of top inwall determines that described gasification altogether runs the most stable.
Coal dust the most according to claim 3 and water-coal-slurry gasification process altogether, it is characterised in that when the vault of described gasification furnace
When the temperature of inwall is beyond predetermined temperature range, the described fluctuation of service that gasifies altogether；And the vault inwall when described gasification furnace
Temperature beyond described predetermined temperature range more than 30 DEG C time, in described gasification furnace, spray into described protection gas.
Coal dust the most according to claim 4 and water-coal-slurry gasification process altogether, it is characterised in that the straying quatity of described protection gas
The temperature of described vault inwall is declined rate controlled between 1 DEG C/min～5 DEG C/min.
Coal dust the most according to claim 1 and water-coal-slurry gasification process altogether, it is characterised in that according to the stove of described gasification furnace
The change of the inlet amount of pipe top nozzle determines that described gasification altogether runs the most stable.
Coal dust the most according to claim 6 and water-coal-slurry gasification process altogether, it is characterised in that when described furnace roof nozzle material-feeding
During Quality Down more than 20% measured, the described fluctuation of service that gasifies altogether, and in described gasification furnace, spray into described protection gas.
Coal dust the most according to claim 7 and water-coal-slurry gasification process altogether, it is characterised in that the straying quatity of described protection gas
For the slippage of described furnace roof nozzle material-feeding amount 10%～50%.
Coal dust the most according to claim 1 and water-coal-slurry gasification process altogether, it is characterised in that described protection gas is not help
The gas of combustion.
Coal dust the most according to claim 1 and water-coal-slurry gasification process altogether, it is characterised in that when from described gasification furnace
Sidewall sprays into water-coal-slurry and gasifying agent, and when spraying into coal dust and gasifying agent from the top of described gasification furnace, described protection gas is
One or both mixing in carbon dioxide, nitrogen；
When the sidewall from described gasification furnace sprays into coal dust and gasifying agent, and it is gentle to spray into water-coal-slurry from the top of described gasification furnace
During agent, described protection gas is one or more mixing in carbon dioxide, water smoke, nitrogen.
11. 1 kinds of gasification furnaces, the vault inwall including body of heater, being positioned at described body of heater top, are arranged on described vault inwall
Furnace roof nozzle and be arranged on the furnace side nozzle of same level height of described sidewall of the furnace body, it is characterised in that described furnace roof sprays
Mouth is integrated with the outside annular space passage for spraying described protection gas, and described protection gas is formed for protecting described vault inwall
Protection gas-bearing formation.
12. gasification furnaces according to claim 11, it is characterised in that the axis of described furnace side nozzle has axial drift angle
α and radially drift angle β, described axial drift angle α and radially drift angle β meet following condition: 0 °≤α≤30 °, 0 °≤β≤45 °, and not
Can it be 0 ° simultaneously.
13. gasification furnaces according to claim 11, it is characterised in that described gasification furnace is arbitrary in claim 1-10
Coal dust described in Xiang and water-coal-slurry gasification process altogether.
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| CN201610407043.0A CN106085509A (en) | 2016-06-12 | 2016-06-12 | Coal dust and water-coal-slurry gasification process and gasification furnace altogether |
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| CN201610407043.0A CN106085509A (en) | 2016-06-12 | 2016-06-12 | Coal dust and water-coal-slurry gasification process and gasification furnace altogether |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106085510A (en) * | 2016-06-12 | 2016-11-09 | 新奥科技发展有限公司 | Coal gasification method and gasification furnace |
| CN110093190A (en) * | 2019-06-17 | 2019-08-06 | 北京迈未科技有限公司 | A kind of combined gasifying burner and its application method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106085510A (en) * | 2016-06-12 | 2016-11-09 | 新奥科技发展有限公司 | Coal gasification method and gasification furnace |
| CN110093190A (en) * | 2019-06-17 | 2019-08-06 | 北京迈未科技有限公司 | A kind of combined gasifying burner and its application method |
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