CN109504448A - The method of entrained flow bed gasification system and gasification - Google Patents
The method of entrained flow bed gasification system and gasification Download PDFInfo
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- CN109504448A CN109504448A CN201811375151.XA CN201811375151A CN109504448A CN 109504448 A CN109504448 A CN 109504448A CN 201811375151 A CN201811375151 A CN 201811375151A CN 109504448 A CN109504448 A CN 109504448A
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- heisui river
- outlet
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- entrance
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- 238000000034 method Methods 0.000 title claims abstract description 80
- 238000002309 gasification Methods 0.000 title claims abstract description 76
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 127
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 126
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 91
- 230000005855 radiation Effects 0.000 claims abstract description 51
- 230000035939 shock Effects 0.000 claims abstract description 51
- 239000002699 waste material Substances 0.000 claims abstract description 44
- 238000010791 quenching Methods 0.000 claims abstract description 35
- 239000010797 grey water Substances 0.000 claims abstract description 34
- 239000006200 vaporizer Substances 0.000 claims abstract description 23
- 239000002893 slag Substances 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 239000007789 gas Substances 0.000 claims description 132
- 238000005406 washing Methods 0.000 claims description 53
- 230000008569 process Effects 0.000 claims description 41
- 238000007701 flash-distillation Methods 0.000 claims description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 239000003250 coal slurry Substances 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 10
- 238000005201 scrubbing Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 229920006395 saturated elastomer Polymers 0.000 claims description 5
- 238000010025 steaming Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 description 37
- 238000001704 evaporation Methods 0.000 description 12
- 230000008020 evaporation Effects 0.000 description 12
- 238000004064 recycling Methods 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 11
- 239000007787 solid Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 238000001914 filtration Methods 0.000 description 10
- 239000003245 coal Substances 0.000 description 9
- 238000001816 cooling Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 238000004062 sedimentation Methods 0.000 description 5
- 239000010866 blackwater Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002918 waste heat Substances 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
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/485—Entrained flow gasifiers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/06—Flash evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
Abstract
The invention discloses a kind of methods of entrained flow bed gasification system and gasification, the system includes: to include gasification furnace, gasification furnace includes vaporizer, radiation waste pot and shock chamber, vaporizer has burner, radiation waste pot is connected to vaporizer bottom, radiation waste pot is equipped with water inlet and steam (vapor) outlet, the bottom crimp of radiation waste pot forms crude synthesis gas outlet, shock chamber is connected with the bottom of radiation waste pot, crude synthesis gas outlet extends to the liquid level of shock chamber hereinafter, shock chamber has syngas outlet and slag notch after the outlet of the first Heisui River, Quench；Heisui River filter device has the first Heisui River entrance and the first gray water outlet；High pressure flash device has the second Heisui River entrance, the first dirty steam (vapor) outlet and the outlet of the second Heisui River；Low pressure flash device has third Heisui River entrance, the second dirty steam (vapor) outlet and the outlet of third Heisui River；There is vacuum flash apparatus the 4th Heisui River entrance and the 4th Heisui River to export；Subsider has the 5th Heisui River entrance and the 5th gray water outlet.
Description
Technical field
The invention belongs to coal water slurry gasification fields, specifically, the present invention relates to the sides of entrained flow bed gasification system and gasification
Method.
Background technique
Coal Gasification Technology is referred to using coal and water as raw material, carries out oxidation reaction with oxygen in gasification furnace, final to obtain
Synthesis gas (mainly CO, H2) process, whole process needs the complicated materialization such as high temperature and pressure, heterogeneous, flowing, transmitting
Journey.Coal Gasification Technology is Coal Clean technology, is Coal Energy Source transformation technology, is the energy technology of China's sustainable development.Generation
In boundary there are three types of industrialized Coal Gasification Technologies, first is that fixed bed, such as Lurgi technology, second is that fluidized bed, such as high temperature Winkler
Deng, third is that air flow bed, such as GE, multi-nozzle opposed gasification technology.
Coal Gasification Technology has 2 kinds of follow-up process, i.e. chilling process and pot destroying process.Chilling process includes coal slurry preparation, gas
Change the parts such as furnace, shock chamber, venturi spray nozzle, Quench scrubbing tower；Pot destroying process includes that waste heat boiler, deduster, Quench gas return
Recycle compressor, the Quench scrubbing tower etc. returned.There is no the full pot destroying process of Quench scrubbing tower to be not suitable in coal chemical industry.In early stage
Application in, chilling process is for synthesizing ammonia, and full pot destroying process is for generating electricity.This 2 kinds of follow-up process have not subsequent technique
Same influence.In the synthesis gas of chilling process outlet, the content of vapor is higher, can change whole CO in conversion process
At H2And CO2, subsequent to recycle more low level energy.In the synthesis gas of pot destroying process outlet, the content of vapor is lower,
Only part CO need to be transformed into H in conversion process2And CO2, this process is recovered to a part of high potential, is conducive to improve whole
The energy conversion efficiency of a process.
Pot destroying process is compared with chilling process, the former can take some high potentials, and the latter can only take part low level energy,
Total effect is that the former is slightly better than the latter.But for a device, efficiency refers to whole flow process.Improve full-range energy
Transfer efficiency is measured, cannot only see gasification unit, it is often more important that the collocation of whole process unit, it is how that the energy of output is all sharp
It uses, it is not a unit that thermal energy design, which is a system,.Therefore, existing pot destroying process technique is further improved, with
Lifting process efficiency.
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 the method for proposing a kind of entrained flow bed gasification system and gasification.The system not only realizes the circulation in system Heisui River
It utilizes, and available high-quality saturated vapor.
In one aspect of the invention, the invention proposes a kind of entrained flow bed gasification systems, according to an embodiment of the invention,
The system includes:
Gasification furnace, the gasification furnace include:
Vaporizer, the vaporizer have burner；
Radiation waste pot, the radiation waste pot are connected with the vaporizer bottom, and water inlet is equipped in the radiation waste pot
And steam (vapor) outlet, the bottom crimp of the radiation waste pot form crude synthesis gas outlet；
Shock chamber, the shock chamber are connected with the bottom of the radiation waste pot, and the crude synthesis gas outlet extends to described
The liquid level of shock chamber is hereinafter, the shock chamber has syngas outlet and slag notch after the outlet of the first Heisui River, Quench；
Heisui River filter device, the Heisui River filter device have the first Heisui River entrance and the first gray water outlet, described first
Heisui River entrance is connected with first Heisui River outlet；
High pressure flash device, the high pressure flash device have the second Heisui River entrance, the first dirty steam (vapor) outlet and second black
Water out, second Heisui River entrance are connected with first gray water outlet；
Low pressure flash device, the low pressure flash device have third Heisui River entrance, the second dirty steam (vapor) outlet and third black
Water out, third Heisui River entrance are connected with second Heisui River outlet；
There is the 4th Heisui River entrance and the 4th Heisui River to export for vacuum flash apparatus, the vacuum flash apparatus, and the described 4th
Heisui River entrance is connected with third Heisui River outlet；
Subsider, the subsider have the 5th Heisui River entrance and the 5th gray water outlet, the 5th Heisui River entrance and institute
The outlet of the 4th Heisui River is stated to be connected.
Entrained flow bed gasification system according to an embodiment of the present invention, water-coal-slurry, oxygen enter vaporizer from burner and complete gas
Change, obtains high-temperature synthesis gas；High-temperature synthesis gas via radiation give up pot, by with radiation waste pot exchange heat, it can be achieved that high-temperature synthesis gas
The recycling of heat, and generate the steam of high-quality；Bottom downlink of the crude synthesis gas that radiation waste pot obtains from radiation waste pot
To shock chamber's liquid level, the Quench of crude synthesis gas is realized, and in shock chamber, it can realize the cooling of crude synthesis gas, moreover it is possible to
The first washing, purifying for realizing crude synthesis gas removes the impurity in crude synthesis gas；Resulting first Heisui River, shock chamber is through Heisui River mistake
After filtering device filtering, the solid impurity in the first Heisui River can be removed, obtain the first buck；First buck is through high pressure flash, and
Water vapour evaporation in one buck, obtains the first dirty steam, and the first buck is because water vapour therein evaporates, impurities in water concentration
It increases, forms the second Heisui River；Second Heisui River is through low pressure flash, and water vapour evaporation in the second buck obtains the second dirty steam, and
Because water vapour therein evaporates, impurities in water concentration further increases second buck, forms third Heisui River；Third Heisui River is passed through into one
Vacuum flashing is walked, concentration further increases, and obtains the 4th Heisui River, and the concentration of the 4th black impurities in water is high, after settlement can will be miscellaneous
Matter sedimentation removal, obtains the 5th buck.
In addition, entrained flow bed gasification system according to the above embodiment of the present invention can also have following additional technology special
Sign:
In some embodiments of the invention, said flow bed gasification system further comprises: synthesis gas washing device, institute
Synthesis gas washing device is stated with gas after synthesis gas entrance, washing water inlet, the outlet of the 6th Heisui River, the 7th gray water outlet and washing
Outlet, the synthesis gas entrance are connected with syngas outlet after the Quench, and the 7th gray water outlet is connected with shock chamber, institute
It states the outlet of the 6th Heisui River to be connected with first Heisui River entrance, the washing water inlet is connected with first gray water outlet.By
This is realized and is recycled to buck, it can be achieved that further purification to synthesis gas.
In some embodiments of the invention, said flow bed gasification system further comprises: heat-exchanger rig, the heat exchange
Gray water outlet after device has dirt steam inlet, the 6th grey water inlet and exchanges heat, the dirt steam inlet and the first dirty steaming
At least one of vapor outlet and described second dirty steam (vapor) outlet are connected, the 6th grey water inlet and the 5th gray water outlet
It is connected, gray water outlet is connected with the washing water inlet after the heat exchange.Be advantageously implemented as a result, to the first dirty steam and/or
The recycling of second dirty steam heat.
In some embodiments of the invention, said flow bed gasification system further comprises: drum, and the drum has
Steam inlet and saturated vapor outlet, water out, water inlet.
In some embodiments of the invention, said flow bed gasification system further comprises: slag breaker, the slag breaker
It is located at below the shock chamber and is connected with the slag notch.Be conducive to promote the direct motion of production as a result,.
In another aspect of the invention, gasified the invention proposes a kind of using said flow bed gasification system
Method, according to an embodiment of the invention, this method comprises:
(1) water-coal-slurry, oxygen are supplied through the burner to the gasification furnace, so that gasified reverse occurs in the vaporizer
It answers, obtains high-temperature synthesis gas, the high-temperature synthesis gas exchanges heat in the radiation waste pot, obtains crude synthesis gas and high pressure saturation is steamed
Vapour, the crude synthesis gas carry out Quench processing in the shock chamber, obtain synthesis gas and lime-ash after the first Heisui River, Quench；
(2) first Heisui River is supplied and is filtered processing into the Heisui River filter device, to obtain the first ash
Water；
(3) a part supply of first buck is subjected to flash distillation process into the high pressure flash device, so as to
To the first dirty steam and the second Heisui River；
(4) second Heisui River is supplied to the low pressure flash device and carries out flash distillation process, to obtain the second dirty steaming
Vapour and third Heisui River；
(5) the third Heisui River is supplied and carries out flash distillation process into the vacuum flash apparatus, it is black to obtain the 4th
Water；
(6) the 4th Heisui River is supplied and carries out settlement treatment into the subsider, to obtain the 5th buck.
The method of gasification according to an embodiment of the present invention, water-coal-slurry, oxygen enter vaporizer from burner and complete gasification, obtains
To high-temperature synthesis gas；High-temperature synthesis gas via radiation give up pot, by with radiation waste pot exchange heat, it can be achieved that high-temperature synthesis gas heat
It recycles, and generates the steam of high-quality；I.e. quilt after the crude synthesis gas that radiation waste pot obtains comes out from the bottom of radiation waste pot
It send to shock chamber's liquid level, realizes the Quench of crude synthesis gas, and in shock chamber, it can realize the cooling of crude synthesis gas, also
It is able to achieve the first washing, purifying of crude synthesis gas, the impurity in crude synthesis gas is removed；Resulting first Heisui River, shock chamber is through Heisui River
After filter device filtering, the solid impurity in the first Heisui River can be removed, obtain the first buck；First buck through high pressure flash,
Water vapour evaporation in first buck, obtains the first dirty steam, and the first buck is because water vapour therein evaporates, and impurities in water is dense
Degree increases, and forms the second Heisui River；Second Heisui River is through low pressure flash, and water vapour evaporation in the second buck obtains the second dirty steam,
And the second buck is because water vapour therein evaporates, impurities in water concentration further increases, and forms third Heisui River；Third Heisui River is into one
Vacuum flashing is walked, concentration further increases, and obtains the 4th Heisui River, and the concentration of the 4th black impurities in water is high, after settlement can will be miscellaneous
Matter sedimentation removal, obtains the 5th buck.
In addition, the method for gasification according to the above embodiment of the present invention can also have the following additional technical features:
In some embodiments of the invention, the method for above-mentioned gasification further comprises: (7) are by synthesis gas after the Quench
Supply carries out counter current contacting with another part of first buck and condensate liquid into the scrubbing tower, after obtaining washing
Synthesis gas, the 6th Heisui River and the 7th buck, and the 6th Heisui River is supplied to the Heisui River filter device, by the 7th ash
Water is supplied to the shock chamber.Thus, it can be achieved that pairing at gas further purification, while realize water is recycled.
In some embodiments of the invention, the method for above-mentioned gasification further comprises: (8) by the described first dirty steam and
At least one of described second dirty steam supply to the heat-exchanger rig and the 5th buck exchanges heat, to be exchanged heat
Buck afterwards, and buck after the heat exchange is supplied to the synthesis gas washing tower as a part of washing water.Be conducive to reality as a result,
Now to the recycling of the first dirty steam and/or the second dirty steam heat.
In some embodiments of the invention, the method for above-mentioned gasification further comprises: (9) will be described in step (1)
Steam is supplied to the drum.
In some embodiments of the invention, the method for above-mentioned gasification further comprises: (10) will be described in step (1)
Lime-ash is supplied into the slag breaker and is handled.Be conducive to promote the direct motion of production as a result,.
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 entrained flow bed gasification system according to an embodiment of the invention；
Fig. 2 is the structural schematic diagram of the entrained flow bed gasification system of further embodiment according to the present invention；
Fig. 3 is the structural schematic diagram of the entrained flow bed gasification system of another embodiment according to the present invention；
Fig. 4 is the structural schematic diagram of the entrained flow bed gasification system of another embodiment according to the present invention；
Fig. 5 is the structural schematic diagram of the entrained flow bed gasification system of another embodiment according to the present invention；
Fig. 6 is the method flow schematic diagram of gasification according to an embodiment of the invention；
Fig. 7 is the method flow schematic diagram of the gasification of further embodiment according to the present invention；
Fig. 8 is the method flow schematic diagram of the gasification of another embodiment according to the present invention；
Fig. 9 is the method flow schematic diagram of the gasification of another embodiment according to the present invention；
Figure 10 is the method flow schematic diagram of the gasification of another embodiment according to the present invention.
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 entrained flow bed gasification systems, according to an embodiment of the invention,
With reference to Fig. 1, the system include: gasification furnace 100, Heisui River filter device 200, high pressure flash device 300, low pressure flash device 400,
Vacuum flash apparatus 500 and subsider 600.
According to an embodiment of the invention, gasification furnace 100 includes vaporizer 110, radiation waste pot 120 and shock chamber 130.Specifically
, water-coal-slurry, oxygen enter vaporizer from burner and complete gasification, obtain high-temperature synthesis gas；High-temperature synthesis gas via radiation give up pot,
By being exchanged heat with radiation waste pot, it can be achieved that recycling to high-temperature synthesis gas heat, and generate the steam of high-quality；Radiation waste
The crude synthesis gas that pot obtains comes downwards under shock chamber's liquid level from the bottom of radiation waste pot, realizes the Quench of crude synthesis gas, and swashing
In cold house, it can realize the cooling of crude synthesis gas, moreover it is possible to the first washing, purifying for realizing crude synthesis gas, it will be miscellaneous in crude synthesis gas
Matter removal.
According to one embodiment of present invention, vaporizer 110 have burner 101, and be suitable for by water-coal-slurry, oxygen supply to
Gasify in vaporizer, to obtain high-temperature synthesis gas.Specifically, the top of vaporizer is arranged in burner.
Still another embodiment in accordance with the present invention, radiation waste pot 120 are connected to 110 bottom of vaporizer, and radiation waste pot 120 is set
Have with water inlet 103 and steam (vapor) outlet 104, the bottom crimp of radiation waste pot 120 forms crude synthesis gas outlet 105, and is suitable for
The resulting high-temperature synthesis gas of vaporizer is exchanged heat with radiation waste pot, to obtain steam and crude synthesis gas.High temperature closes as a result,
It gives up via radiation pot at gas, by being exchanged heat with radiation waste pot, it can be achieved that recycling to high-temperature synthesis gas heat, and generates Gao Pin
The saturated vapor of matter.
According to still another embodiment of the invention, shock chamber 130 is connected with the bottom of radiation waste pot 120, and crude synthesis gas goes out
Mouth 105 extends to the liquid level of shock chamber 130 hereinafter, shock chamber 130 has syngas outlet after the first Heisui River outlet 106, Quench
107 and slag notch 108, and be suitable for crude synthesis gas carrying out Quench, to obtain synthesis gas, the first Heisui River and lime-ash after Quench.
Specifically, crude synthesis gas comes downwards under shock chamber's liquid level from the bottom of radiation waste pot, the Quench of crude synthesis gas is realized, and in Quench
In room, it can realize the cooling of crude synthesis gas, moreover it is possible to the first washing, purifying for realizing crude synthesis gas, by the impurity in crude synthesis gas
Removal.
According to an embodiment of the invention, Heisui River filter device 200 has the first Heisui River entrance 201 and the first gray water outlet
202, the first Heisui River entrance 201 is connected with the first Heisui River outlet 106, and is suitable for the first Heisui River being filtered processing, so as to
To the first buck.Specifically, resulting first Heisui River, shock chamber through Heisui River filter device filtering after, can be by consolidating in the first Heisui River
The removal of body impurity, obtains the first buck.
According to an embodiment of the invention, high pressure flash device 300 has second the 301, first dirty steam (vapor) outlet of Heisui River entrance
302 and the second Heisui River outlet 303, the second Heisui River entrance 301 is connected with the first gray water outlet 202, and suitable for by the first buck
A part carries out flash distillation process, to obtain the first dirty steam and the second Heisui River.Specifically, the first buck is through high pressure flash,
Water vapour evaporation in one buck, obtains the first dirty steam, and the first buck is because water vapour therein evaporates, impurities in water concentration
It increases, forms the second Heisui River.
According to an embodiment of the invention, low pressure flash device 400 has the dirty steam (vapor) outlet of third Heisui River entrance 401, second
402 and third Heisui River outlet 403, third Heisui River entrance 401 and the second Heisui River outlet 303 be connected, and suitable for by the second Heisui River into
Row flash distillation process, to obtain the second dirty steam and third Heisui River.Specifically, the second Heisui River is through low pressure flash, in the second buck
Water vapour evaporation, obtain the second dirty steam, and the second buck is because water vapour therein evaporates, impurities in water concentration further rises
Height forms third Heisui River.
According to an embodiment of the invention, there is vacuum flash apparatus 500 the 4th Heisui River entrance 501 and the 4th Heisui River to export
502, the 4th Heisui River entrance 501 is connected with third Heisui River outlet 403, and is suitable for third Heisui River carrying out flash distillation process, so as to
To the 4th Heisui River.Specifically, third Heisui River is further through vacuum flashing, concentration is further increased, obtain the concentration of impurity compared with
The 4th high Heisui River.
According to an embodiment of the invention, subsider 600 have the 5th Heisui River entrance 601 and the 5th gray water outlet 602, the 5th
Heisui River entrance 601 is connected with the 4th Heisui River outlet 502, and is suitable for higher 4th Heisui River of impurity concentration carrying out settlement treatment,
To obtain the 5th buck.It removes, obtains specifically, the 4th Heisui River after settlement can settle the partial impurities in the 4th Heisui River
Lower 5th buck of impurity concentration.
Entrained flow bed gasification system according to an embodiment of the present invention, water-coal-slurry, oxygen enter vaporizer from burner and complete gas
Change, obtains high-temperature synthesis gas；High-temperature synthesis gas via radiation give up pot, by with radiation waste pot exchange heat, it can be achieved that high-temperature synthesis gas
The recycling of heat, and generate the steam of high-quality；Bottom downlink of the crude synthesis gas that radiation waste pot obtains from radiation waste pot
To shock chamber's liquid level, the Quench of crude synthesis gas is realized, and in shock chamber, it can realize the cooling of crude synthesis gas, moreover it is possible to
The first washing, purifying for realizing crude synthesis gas removes the impurity in crude synthesis gas；Resulting first Heisui River, shock chamber is through Heisui River mistake
After filtering device filtering, the solid impurity in the first Heisui River can be removed, obtain the first buck；First buck is through high pressure flash, and
Water vapour evaporation in one buck, obtains the first dirty steam, and the first buck is because water vapour therein evaporates, impurities in water concentration
It increases, forms the second Heisui River；Second Heisui River is through low pressure flash, and water vapour evaporation in the second buck obtains the second dirty steam, and
Because water vapour therein evaporates, impurities in water concentration further increases second buck, forms third Heisui River；Third Heisui River is passed through into one
Vacuum flashing is walked, concentration further increases, and obtains the 4th Heisui River, and the concentration of the 4th black impurities in water is high, after settlement can will be miscellaneous
Matter sedimentation removal, obtains the 5th buck.
According to an embodiment of the invention, said flow bed gasification system further comprises with reference to Fig. 2: synthesis gas washing dress
Set 700.
According to an embodiment of the invention, synthesis gas washing device 700 have synthesis gas entrance 701, washing water inlet 702,
6th Heisui River exports syngas outlet 705 after the 703, the 7th gray water outlet 704 and washing, closes after synthesis gas entrance 701 and Quench
It is connected at gas outlet 107, the 6th Heisui River outlet 703 is connected with the first Heisui River entrance 201, the 7th gray water outlet 704 and shock chamber
130 are connected, and washing water inlet 702 is connected with the first gray water outlet 202, and are suitable for synthesis gas after Quench and washing water (first
Buck and outer for condensate liquid (such as condensate liquid can be condensed water)) counter current contacting is carried out, so as to synthesis gas after being washed, the
Six Heisui River and the 7th buck, and the 6th Heisui River is supplied to Heisui River filter device, the 7th buck is supplied to shock chamber.Specifically
, in synthesis gas washing device, the first buck and outer for condensate liquid and synthesis gas counter current contacting, water and washing after being washed
Synthesis gas afterwards is located at washing for synthesis gas washing bottom of device due to solid particles sediment to synthesis gas washing bottom of device
It is high and be the 6th Heisui River to wash rear water solid content, and it is lower and be the to be located at water solid content after the washing on synthesis gas washing device top
Seven bucks, the 6th Heisui River are sent to Heisui River filter device, through filtering and subsequent flash distillation, sedimentation process, it can be achieved that water resource is followed
Ring utilizes；7th buck wants low for the concentration of the first black impurities in water in shock chamber, therefore, can send the 7th buck to sharp
Cold house is to carry out Quench to crude synthesis gas.
According to an embodiment of the invention, said flow bed gasification system further comprises with reference to Fig. 3: heat-exchanger rig 800.
According to an embodiment of the invention, heat-exchanger rig 800 has dirty steam inlet 801, the 6th grey water inlet 802 and heat exchange
Gray water outlet 803 afterwards, dirty steam inlet 801 and at least one of the first dirty steam (vapor) outlet 302 and the second dirty steam (vapor) outlet 402
It is connected, the 6th grey water inlet 802 is connected with the 5th gray water outlet 602, gray water outlet 803 and 702 phase of washing water inlet after heat exchange
Even, and it is suitable for exchanging heat at least one of the first dirty steam and the second dirty steam with the 5th buck, after obtaining heat exchange
Buck, and buck after heat exchange is supplied to synthesis gas washing tower as a part of washing water.Inventors have found that in heat-exchanger rig
In, the first dirty steam and/or the second dirty steam are directly contacted with resulting 5th buck of subsider and are exchanged heat, so that first is dirty
Steam and/or the second dirty steam direct liquefaction are water, buck after exchanging heat are mixed to get with the 5th buck, it is thus achieved that first
The recycling of dirty steam and/or the second dirty steam is further sent to synthesis gas washing tower by buck after exchanging heat as one
Divide washing water to use, realizes the recycling of the first dirty steam and/or the second dirty steam, improve the economy of entire technique.
According to an embodiment of the invention, said flow bed gasification system further comprises with reference to Fig. 4: drum 900.
According to an embodiment of the invention, drum 900 have steam inlet 901, saturated vapor outlet 902, water outlet 903,
Water inlet 904, steam inlet 901 are connected with steam (vapor) outlet 104, and water outlet 903 is connected with radiation waste pot water inlet 103.
According to an embodiment of the invention, said flow bed gasification system further comprises with reference to Fig. 5: slag breaker 1000.
According to an embodiment of the invention, slag breaker 1000 is located at 130 lower section of shock chamber and is connected with slag notch 108, and suitable
It is handled in by the lime-ash in shock chamber.In the prior art, the resulting lime-ash of gasification furnace is through lock hopper system intermittently operated
Drain into dragveyer, requirement of the technique to lock hopper is high, and the present invention is not necessarily to lock hopper, directly by gasification furnace slag notch and break
Machine is connected, and has not only realized the centralized processing of lime-ash, but also reduce process energy consumption.
In another aspect of the invention, fine coal gas is carried out using said flow bed gasification system the invention proposes a kind of
The method of change, according to an embodiment of the invention, with reference to Fig. 6, this method comprises:
S100: water-coal-slurry, oxygen are supplied to gasification furnace
In the step, water-coal-slurry, oxygen are supplied to gasification furnace, so that gasification reaction occurs in vaporizer, obtain high temperature
Synthesis gas, high-temperature synthesis gas exchange heat in radiation waste pot, obtain crude synthesis gas and steam, and crude synthesis gas is carried out in shock chamber
Quench processing, obtains synthesis gas and lime-ash after the first Heisui River, Quench.The pot inventors have found that high-temperature synthesis gas is given up via radiation, passes through
With radiation waste pot indirect heat exchange, it can be achieved that recycling to high-temperature synthesis gas heat, and the steam of high-quality is generated, the steam
It can be used for subsequent power generation, to improve the economy of enterprise.Crude synthesis gas comes downwards under shock chamber's liquid level from the bottom of radiation waste pot,
Realize the Quench of crude synthesis gas, and in shock chamber, it can realize the cooling of crude synthesis gas, moreover it is possible to realize the first of crude synthesis gas
Washing, purifying removes the impurity in crude synthesis gas.
S200: the first Heisui River is supplied into Heisui River filter device and is filtered processing
In the step, the first Heisui River is supplied into Heisui River filter device and is filtered processing, to obtain the first buck.
Specifically, resulting first Heisui River, shock chamber can remove the solid impurity in the first Heisui River after the filtering of Heisui River filter device,
Obtain the first buck.
S300: a part supply of the first buck is subjected to flash distillation process into high pressure flash distillation plant
In the step, a part supply of the first buck is subjected to flash distillation process into high pressure flash distillation plant, to obtain
First dirty steam and the second Heisui River.Specifically, the first buck is through high pressure flash, the water vapour evaporation in the first buck obtains the
One dirty steam, and the first buck is because water vapour therein evaporate, impurities in water concentration increases, the second Heisui River of formation.
S400: the second Heisui River is supplied to low pressure flash device and carries out flash distillation process
In the step, the second Heisui River is supplied to low pressure flash device and carries out flash distillation process, to obtain the second dirty steam
With third Heisui River.Specifically, the second Heisui River is through low pressure flash, the water vapour evaporation in the second buck obtains the second dirty steam, and
Because water vapour therein evaporates, impurities in water concentration further increases second buck, forms third Heisui River.
S500: third Heisui River is supplied into vacuum flash apparatus and carries out flash distillation process
In the step, third Heisui River is supplied into vacuum flash apparatus and carries out flash distillation process, to obtain the 4th Heisui River.
Specifically, third Heisui River is further through vacuum flashing, concentration is further increased, and the concentration the higher 4th for obtaining impurity is black
Water.
S600: the 4th Heisui River is supplied into subsider and carries out settlement treatment
In the step, the 4th Heisui River is supplied into subsider and carries out settlement treatment, to obtain the 5th buck.Specifically
, the partial impurities in the 4th Heisui River can be settled remove after settlement by the 4th Heisui River, obtain lower 5th ash of impurity concentration
Water.
The method of gasification according to an embodiment of the present invention, water-coal-slurry, oxygen enter vaporizer from burner and complete gasification, obtains
To high-temperature synthesis gas；High-temperature synthesis gas via radiation give up pot, by exchanged heat with radiation waste pot, it can be achieved that high-temperature synthesis gas heat
The recycling of amount, and generate the steam of high-quality；After the crude synthesis gas that radiation waste pot obtains comes out from the bottom of radiation waste pot
It is sent under shock chamber's liquid level, realizes the Quench of crude synthesis gas, and in shock chamber, it can realize the drop of crude synthesis gas
Temperature, moreover it is possible to which the first washing, purifying for realizing crude synthesis gas removes the impurity in crude synthesis gas；The resulting first Heisui River warp in shock chamber
After the filtering of Heisui River filter device, the solid impurity in the first Heisui River can be removed, obtain the first buck；First buck is dodged through high pressure
It steams, the water vapour evaporation in the first buck obtains the first dirty steam, and the first buck is because water vapour therein evaporates, miscellaneous in water
Matter concentration increases, and forms the second Heisui River；Second Heisui River is through low pressure flash, and water vapour evaporation in the second buck obtains the second dirt
Steam, and the second buck is because water vapour therein evaporates, impurities in water concentration further increases, and forms third Heisui River；Third is black
The further vacuum flashing of water, concentration further increase, and obtain the 4th Heisui River, the concentration of the 4th black impurities in water is high, after settlement
Impurity can be settled and be removed, obtain the 5th buck.
According to an embodiment of the invention, the method for above-mentioned gasification further comprises with reference to Fig. 7:
S700: synthesis gas after Quench is supplied into scrubbing tower and carries out counter current contacting with washing water
In the step, synthesis gas after Quench is supplied into synthesis gas washing tower and washing water (the first buck and outer cooling supply
Lime set (such as condensate liquid can be condensed water)) counter current contacting is carried out, so as to synthesis gas, the 6th Heisui River and the 7th after being washed
Buck, and the 6th Heisui River is supplied to Heisui River filter device, the 7th buck is supplied to shock chamber.Specifically, in synthesis air purge
It washs in device, the first buck and outer for condensate liquid and synthesis gas counter current contacting, water and synthesis gas after washing after being washed, due to
Water solid content is high to synthesis gas washing bottom of device, therefore after being located at the washing of synthesis gas washing bottom of device for solid particles sediment
And it is the 6th Heisui River, and water solid content is lower and be the 7th buck after being located at the washing on synthesis gas washing device top, the 6th
Heisui River is sent to Heisui River filter device, through filtering and subsequent flash distillation, sedimentation process, it can be achieved that water resource recycles；7th ash
Water wants low for the concentration of the first black impurities in water in shock chamber, therefore, can send the 7th buck to shock chamber to close to thick
Quench is carried out at gas.
According to an embodiment of the invention, the method for above-mentioned gasification further comprises with reference to Fig. 8:
S800: at least one of the first dirty steam and the second dirty steam supply to heat-exchanger rig and the 5th buck are changed
Heat
In the step, by least one of the first dirty steam and the second dirty steam supply to heat-exchanger rig and the 5th buck into
Row heat exchange, so as to buck after being exchanged heat, and buck after heat exchange is supplied to synthesis gas washing tower as washing water.Invention human hair
Existing, in heat-exchanger rig, the first dirty steam and/or the second dirty steam are directly contacted with resulting 5th buck of subsider and are changed
Heat is mixed to get buck after exchanging heat with the 5th buck so that the first dirty steam and/or the second dirty steam direct liquefaction are water, by
This, which is realized, further send by buck after exchanging heat to synthesis gas the recycling of the first dirty steam and/or the second dirty steam
Scrubbing tower is used as washing water, is realized the recycling of the first dirty steam and/or the second dirty steam, is improved the warp of entire technique
Ji property.
According to an embodiment of the invention, the method for above-mentioned gasification further comprises with reference to Fig. 9:
S900: the steam in S100 is supplied to drum
In the step, the steam in S100 is supplied to drum vapour.
According to an embodiment of the invention, the method for above-mentioned gasification further comprises with reference to Figure 10:
S1000: the lime-ash in S100 is supplied and is handled into slag breaker
In the step, the lime-ash in S100 is supplied and is handled into slag breaker.In the prior art, obtained by gasification furnace
Lime-ash be to drain into dragveyer through lock hopper system intermittently operated, requirement of the technique to lock hopper is high, and the present invention is not necessarily to lock hopper, directly
It connects and the slag notch in gasification furnace is connected with slag breaker, not only realized the centralized processing of lime-ash, but also reduce process energy consumption.
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 entrained flow bed gasification system characterized by comprising
Gasification furnace, the gasification furnace include:
Vaporizer, the vaporizer have burner；
Radiation waste pot, the radiation waste pot are connected to the vaporizer bottom, and water inlet and steam are equipped in the radiation waste pot
Outlet, the bottom crimp of the radiation waste pot form crude synthesis gas outlet；
Shock chamber, the shock chamber are connected with the bottom of the radiation waste pot, and the crude synthesis gas outlet extends to the Quench
The liquid level of room is hereinafter, the shock chamber has syngas outlet and slag notch after the outlet of the first Heisui River, Quench；
Heisui River filter device, the Heisui River filter device have the first Heisui River entrance and the first gray water outlet, first Heisui River
Entrance is connected with first Heisui River outlet；
There is the second Heisui River entrance, the first dirty steam (vapor) outlet and the second Heisui River to go out for high pressure flash device, the high pressure flash device
Mouthful, second Heisui River entrance is connected with first gray water outlet；
There is third Heisui River entrance, the second dirty steam (vapor) outlet and third Heisui River to go out for low pressure flash device, the low pressure flash device
Mouthful, third Heisui River entrance is connected with second Heisui River outlet；
There is the 4th Heisui River entrance and the 4th Heisui River to export for vacuum flash apparatus, the vacuum flash apparatus, the 4th Heisui River
Entrance is connected with third Heisui River outlet；
Subsider, the subsider have the 5th Heisui River entrance and the 5th gray water outlet, the 5th Heisui River entrance and described the
The outlet of four Heisui River is connected.
2. system according to claim 1, which is characterized in that further comprise:
Synthesis gas washing device, the synthesis gas washing device have synthesis gas entrance, washing water inlet, the 6th Heisui River outlet,
Syngas outlet after 7th gray water outlet and washing, the synthesis gas entrance is connected with syngas outlet after the Quench, described
The outlet of 6th Heisui River is connected with first Heisui River entrance, and the 7th gray water outlet is connected with the shock chamber, described to wash
Water inlet is washed to be connected with first gray water outlet.
3. system according to claim 2, which is characterized in that further comprise:
Heat-exchanger rig, gray water outlet after the heat-exchanger rig has dirty steam inlet, the 6th grey water inlet and exchanges heat, the dirty steaming
Vapour entrance is connected at least one of the described first dirty steam (vapor) outlet and the second dirty steam (vapor) outlet, and the 6th buck enters
Mouth is connected with the 5th gray water outlet, and gray water outlet is connected with the washing water inlet after the heat exchange.
4. system according to any one of claim 1-3, which is characterized in that further comprise:
There is steam inlet and saturated vapor to export for drum, the drum, and the steam inlet is connected with the steam (vapor) outlet.
5. system according to claim 1, which is characterized in that further comprise:
Slag breaker, the slag breaker are located at below the shock chamber and are connected with the slag notch.
6. a kind of method to be gasified using system of any of claims 1-5 characterized by comprising
(1) water-coal-slurry, oxygen are supplied through the burner to the gasification furnace, so that gasification reaction occurs in the vaporizer,
High-temperature synthesis gas is obtained, the high-temperature synthesis gas exchanges heat in the radiation waste pot, obtains crude synthesis gas and steam, described thick
Synthesis gas carries out Quench processing in the shock chamber, obtains synthesis gas and lime-ash after the first Heisui River, Quench；
(2) first Heisui River is supplied and is filtered processing into the Heisui River filter device, to obtain the first buck；
(3) a part supply of first buck into the high pressure flash device is subjected to flash distillation process, to obtain the
One dirty steam and the second Heisui River；
(4) second Heisui River is supplied to the low pressure flash device and carries out flash distillation process, so as to obtain the second dirty steam and
Third Heisui River；
(5) the third Heisui River is supplied and carries out flash distillation process into the vacuum flash apparatus, to obtain the 4th Heisui River；
(6) the 4th Heisui River is supplied and carries out settlement treatment into the subsider, to obtain the 5th buck.
7. the method according to claim 1, wherein further comprising:
(7) synthesis gas after the Quench is supplied into the scrubbing tower and is carried out with another part condensate liquid of first buck
Counter current contacting, so as to synthesis gas, the 6th Heisui River and the 7th buck after being washed, and by the supply in the 6th Heisui River to described
Heisui River filter device supplies the 7th buck to the shock chamber.
8. the method according to the description of claim 7 is characterized in that further comprising:
(8) by least one of the described first dirty steam and the second dirty steam supply to the heat-exchanger rig and the described 5th
Buck exchanges heat, so as to buck after being exchanged heat, and using buck after the heat exchange supply to the synthesis gas washing tower as
A part of washing water.
9. method a method according to any one of claims 6-8, which is characterized in that further comprise:
(9) steam in step (1) is supplied to the drum.
10. according to the method described in claim 6, it is characterized in that, further comprising:
(10) lime-ash in step (1) is supplied into the slag breaker and is handled.
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| CN103435005A (en) * | 2013-09-06 | 2013-12-11 | 刘金成 | Washing treatment process for synthesis gas |
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| CN108795500A (en) * | 2018-08-21 | 2018-11-13 | 北京迈未科技有限公司 | A kind of gasification system and technique of high efficient heat recovery |
| CN209481576U (en) * | 2018-11-19 | 2019-10-11 | 清华大学 | Entrained flow bed gasification system |
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|---|---|---|---|---|
| CN103435005A (en) * | 2013-09-06 | 2013-12-11 | 刘金成 | Washing treatment process for synthesis gas |
| CN108456554A (en) * | 2017-02-22 | 2018-08-28 | 清华大学山西清洁能源研究院 | Short route entrained flow gasification technique and short route gas-flow bed gasifying apparatus |
| CN108676581A (en) * | 2018-07-19 | 2018-10-19 | 北京清创晋华科技有限公司 | A kind of entrained flow bed gasification system and method |
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