CN106675600A - Coal gasification apparatus and coal gasification method for rich hydrogen by adopting coal gasification apparatus - Google Patents
Coal gasification apparatus and coal gasification method for rich hydrogen by adopting coal gasification apparatus Download PDFInfo
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- CN106675600A CN106675600A CN201510754153.XA CN201510754153A CN106675600A CN 106675600 A CN106675600 A CN 106675600A CN 201510754153 A CN201510754153 A CN 201510754153A CN 106675600 A CN106675600 A CN 106675600A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
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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
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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
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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
- 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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- 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
- C10J2300/12—Heating the gasifier
- C10J2300/1223—Heating the gasifier by burners
Abstract
The invention discloses a coal gasification apparatus and a coal gasification method for rich hydrogen by adopting the coal gasification apparatus. The coal gasification apparatus comprises an upper gasification chamber (2) and a lower combustion gasification chamber (1), wherein the circumferential wall of the upper gasification chamber is provided with a plurality of upper nozzles (8b), the circumferential wall of the lower combustion gasification chamber is provided with a plurality of lower nozzles (8a), and at least one of the plurality of upper nozzles (8b) is a vapor nozzle. The coal gasification method comprises the following steps: preheating the lower combustion gasification chamber (1), introducing coal fuel and a gasification agent into the lower combustion gasification chamber by virtue of the lower nozzles (8b) to generate combustion and gasification reaction, and introducing vapor into the upper gasification chamber (2) by virtue of upper nozzles (8b) to generate water gas transformation reaction. In the coal gasification apparatus and the coal gasification method, the water gas transformation reaction can be improved, and the output of the hydrogen is increased, so that the content of hydrogen in the produced synthetic gas is apparently higher than that of the current domain entrained-flow bed gasification furnace.
Description
Technical field
The present invention relates to coal chemical technology, in particular it relates to a kind of coal gasification apparatus and its coal gasification method, being capable of output
The synthesis gas of higher hydrogen content.
Background technology
Coal hydrogen producing technology is mainly based on hydrogen production from coal gasification.Hydrogen production from coal gasification is first Coal Gasification to be obtained with an oxidation
Carbon, hydrogen gas and water, carbon dioxide are the synthesis gas of Main Ingredients and Appearance, then pass through purification, carbon monoxide (CO) conversion and separation, carry
It is pure to wait the product hydrogen for processing and obtaining certain purity.The technical process of hydrogen production from coal gasification technology generally comprises coal gasification, coal gas
Purification, the conversion of CO and H2The main production link such as purification.
Coal gasification apparatus are the key equipments of hydrogen production from coal gasification.Carbon-containing fuel (i.e. coal fuel, such as dry pulverized coal or water-coal-slurry
Deng) burning and gasification reaction in coal gasification apparatus, obtain it is above-mentioned with carbon monoxide, hydrogen gas and water, carbon dioxide for mainly into
The synthesis gas of part.In prior art, coal gasification apparatus typically have single combustion gasification room, coal fuel, gasifying agent (such as oxygen)
Deng in combustion gasification Indoor Combustion and gasification, the synthesis gas for obtaining flows out coal gasification apparatus and into subordinate's process equipment.However,
Hydrogen content in the synthesis gas of the coal gasification apparatus output of prior art is not universal high, such as general dry coal powder gasification produces conjunction
The H in gas2Content is normally no higher than 30%.
Carried out to this certain research in prior art, such as it is public in american documentation literature US.2005/0039400 A1
A kind of device for producing hydrogen that hydrogen selective permeable film is set in fluidized-bed gasification furnace is opened, the synthesis gas flowed out in gasification furnace leads to
The filtration of hydrogen selective permeable film is crossed, the output gas of higher hydrogen content is obtained.But weak point is exactly fluidized gasification
The intensity of gasification of stove is low, and load is low, and seperation film is vulnerable to flying dust contamination and plugging in stove, to H under high-temperature and high-pressure conditions in gasification furnace2
Separation membrane material has high demands, and seperation film use condition is harsh.
Additionally, the U of Chinese patent literature CN 202430187 discloses a kind of three-level fluid bed device for producing hydrogen, it is divided into coupling
Coal gasification, Ca-base adsorbent catch three processes of carbon dioxide and calcination of calcium carbonate, and by Ca-base adsorbent carbon dioxide is caught
To improve hydrogen content.The shortcoming one that the type hydrogen production from coal gasification device is present is that structure of reactor is complicated, and two is fluid bed gas
Change response strength low, Ca-base adsorbent circular regeneration amount is big, and overall thermal is inefficient, required gasification furnace reactor volume compared with
Greatly.
The content of the invention
For drawbacks described above of the prior art or deficiency, the invention provides a kind of novel coal gasification device and employing should
The coal gasification method of the rich hydrogen producing of coal gasification apparatus, the simple structure of the coal gasification apparatus, production capacity are big, in the synthesis gas of output
Hydrogen content it is high.
For achieving the above object, according to an aspect of the invention, there is provided a kind of coal gasification apparatus, the coal gasification apparatus
Including the epimere vaporizer and hypomere combustion gasification room that are interconnected, the epimere vaporizer is provided with syngas outlet, it is described under
Section vaporizer is provided with slag-drip opening, and the perisporium of the epimere vaporizer is provided with circumferentially spaced arrangement and stretches into the epimere
The indoor top nozzle of gasification, the perisporium of the hypomere combustion gasification room is provided with circumferentially spaced arrangement and stretches into the hypomere combustion
The indoor lower nozzle of gasification is burnt, wherein top nozzle can spray into water vapour to produce Water gas shift/WGS.
Preferably, the top nozzle and the lower nozzle are all higher than two and are circumferentially equidistantly spaced from respectively.
Preferably, the epimere vaporizer and hypomere combustion gasification room are all formed as cylindrical chamber, multiple upper sprays
Mouth stretches into the epimere gasification interior with the eccentric direction for deviateing the radial direction of the epimere vaporizer, and multiple lower nozzles are equal
Stretched in the hypomere combustion gasification room, so that ejecta with the eccentric direction for deviateing the radial direction of the hypomere combustion gasification room
Material can form vortex in the epimere vaporizer and hypomere combustion gasification room.
Preferably, the eccentric angle of the top nozzle and the lower nozzle deviation radial direction is 0～30 °.
Preferably, coal gasification apparatus include the multiple described hypomere combustion for being located at epimere vaporizer lower section and being interconnected
Burn vaporizer, and/or the coal gasification apparatus be included in that hypomere combustion gasification room top is interconnected it is multiple described on
Section vaporizer.
Preferably, the coal gasification apparatus also include forming gas pipeline, and the bottom of the forming gas pipeline is connected to institute
State the syngas outlet of epimere vaporizer.
Preferably, the epimere vaporizer and hypomere combustion gasification room are the cylindrical chamber of a diameter of D, the epimere
The aditus laryngis section reduced by radial direction between vaporizer and the hypomere combustion gasification room is connected；Wherein, the hypomere combustion gasification
The axial height of room is 1D～5D, and the axial height of the epimere vaporizer is 1D～3D, the diameter of the forming gas pipeline
It is 1.5D～8D for 0.05D～0.5D and axial height.
Preferably, CaO adsorbents are additionally provided with the epimere vaporizer and/or the forming gas pipeline.
Preferably, the housing of the epimere vaporizer and hypomere combustion gasification room is lining of fire brick structure or water-cooling wall
The vertical cylinder shape housing of lining structure, the coal gasification apparatus also include that spaced radial ground surrounds the vertical cylinder shape housing
The vessel shell of outer setting, between the vessel shell and the vertical cylinder shape housing noble gases pressurising is formed with
Room.
According to a further aspect in the invention, a kind of coal gasification of the rich hydrogen producing using above-mentioned coal gasification apparatus is additionally provided
Method, the method includes：After the hypomere combustion gasification room is preheated, by the lower nozzle toward the hypomere combustion gasification
Interior is passed through coal fuel and gasifying agent, to produce burning and gasification reaction, and is gasified toward the epimere by the top nozzle
Interior is passed through water vapour, to produce further water gas shift reaction.
Preferably, the reaction temperature in the hypomere combustion gasification room is controlled to as 1200 °～1400 °, the epimere gas
Change indoor reaction temperature and be controlled to 700 °～1000 °.
Preferably, the matter between the water vapour that the coal fuel and the top nozzle that the lower nozzle is sprayed into is sprayed into
Amount is than being 1:1.5-2.0.
Preferably, the time of staying of the reacting gas in the hypomere combustion gasification room is 2～5 seconds, the epimere gasification
The time of staying of indoor reacting gas is 2～4 seconds；And the syngas outlet is connected with forming gas pipeline, reaction gas
The time of staying of the body in the forming gas pipeline is 1～3 second.
According to above-mentioned technical proposal, in the coal gasification apparatus and its coal gasification method of the present invention, subregion gasification is employed,
To optimize in-furnace temperature distribution, the burning and gasification of coal fuel are adapted in the hypomere combustion gasification room of high temperature, relative
In the epimere vaporizer of low temperature, there is provided spray into high-pressure water vapor, water gas shift reaction can be strengthened, increase hydrogen output so that
Hydrogen content is significantly higher than the airflow bed gasification furnace of current main-stream in the synthesis gas of output, it is possible to decrease downstream transforms technique it is negative
Lotus, is adapted to the Coal Chemical Industry technological process using hydrogen as final goal product.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute the part of description, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the structural representation of the coal gasification apparatus according to the preferred embodiment of the present invention；
Fig. 2 is the cross-sectional view of the coal gasification apparatus shown in Fig. 1, it is illustrated that top nozzle or lower nozzle are in vertical cylinder
Distribution and setting angle on shape housing.
Description of reference numerals
The epimere vaporizer of 1 hypomere combustion gasification room 2
The syngas outlet of 3 aditus laryngis section 4
The slag-drip opening of 5 slag bath 6
Nozzle under 7 vertical cylinder shape housing 8a
The forming gas pipeline of 8b top nozzles 9
The noble gases pressurising room of 10 vessel shell 11
The axial height a eccentric angles of H1 hypomere combustion gasifications room
The axial height D diameters of H2 epimere vaporizers
Specific embodiment
The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The specific embodiment stated is merely to illustrate and explains the present invention, is not limited to the present invention.
In the present invention, in the case where contrary explanation is not made, the noun of locality for using is typically pin such as " upper and lower, top, bottom "
It is for direction shown in the drawings or for each part mutual alignment relation on vertical, vertical or gravity direction
Description word；" vertical direction " refers to the paper above-below direction for illustrating, and " horizontal " is worth the approximate horizontal paper for being diagram
Left and right directions；" inside and outside " is commonly referred to as radially inner and outer inside and outside the chamber for chamber or for the center of circle.
As shown in figure 1, the invention provides a kind of novel coal gasification device, coal gasification apparatus (or claiming " the gasification furnace ") bag
The epimere vaporizer 2 and hypomere combustion gasification room 1 being interconnected is included, epimere vaporizer 2 is provided with syngas outlet 4, hypomere gasification
Room 1 is provided with slag bath 5 and slag-drip opening 6, and the perisporium of epimere vaporizer 2 is provided with circumferentially spaced arrangement and stretches into epimere gasification
Top nozzle 8b in room 2, the perisporium of hypomere combustion gasification room 1 is provided with circumferentially spaced arrangement and stretches into hypomere combustion gasification room
Lower nozzle 8a in 1.
In this coal gasification apparatus, no longer using single combustion gasification room, but gasified using subregion, to optimize in stove
Temperature Distribution.The temperature of hypomere combustion gasification room 1 is higher, can carry out the combustion gasification reaction of coal fuel, and top nozzle 8b is being sprayed into
After selectable medium, the gasification reaction for requiring that temperature is relatively lower can be further participated in, to meet technological requirement.Hypomere burns
Vaporizer 1 can be single gasification combustion chamber, or the multiple gasification combustion chamber being interconnected, and carry out in gasification, and combustion room
(coal and gasifying agent reaction generate the synthesis for mainly containing hydrogen and carbon monoxide to the synthesis gas produced after burning and gasification reaction
Gas) fully enter in epimere vaporizer 2, carry out follow-up reaction, such as water gas shift reaction etc..Likewise, epimere gasification
Room 2 can also be single or multiple.Additionally, the maximum difference between epimere vaporizer 2 and hypomere combustion gasification room 1 is hypomere
Combustion gasification room 1 is burning of coal room, and without the need for the participation of coal in epimere vaporizer 2.
Further, epimere vaporizer 2 and hypomere combustion gasification room 1 can be designed using multistage multiinjector, nozzle therein
Quantity and the equal scalable of ejection material, so that the integrated operation loading elasticity of gasification furnace is big, flexible operation.
In the present embodiment, at least one of multiple top nozzle 8b steam to spray into water into epimere vaporizer 2
The steam spray nozzle of vapour.This is due to the water gas shift reaction (CO+H in coal gasification reaction process2O→CO2+H2) it is to produce
The important reaction of hydrogen, the gasification reaction is exothermic reaction, from thermodynamical equilibrium angle analysis, reduces temperature and increase WGR
Reaction balance can be conducive to move right.Therefore after spraying into high-pressure water vapor in epimere vaporizer 2, Water gas shift/WGS is enhanced
Reaction, being capable of the more hydrogen of output.Therefore, water vapour is sprayed in epimere vaporizer 2, water gas shift reaction can be strengthened, increased
Hydrogenation yield, flexible hydrogen/carbon ratio, meets subsequent technique requirement.The temperature of syngas outlet 4 is reduced simultaneously, reduces molten
Slag is carried secretly, makes full use of gas heat.
Wherein, epimere vaporizer 2 and hypomere combustion gasification room 1 are both preferably cylindrical chamber, multiple top nozzle 8b with
The eccentric direction for deviateing the radial direction of epimere vaporizer 2 is stretched in epimere vaporizer 2, and multiple lower nozzle 8a are burnt with deviateing hypomere
The eccentric direction of the radial direction of vaporizer 1 is stretched in hypomere combustion gasification room 1, so that spray material can be in epimere vaporizer 2
It is vortexed with being formed in hypomere combustion gasification room 1.So, by multi-jet eccentric setting, to form vortex, fuel is extended
Grain spiraling the time of staying in stove, reduces flame between nozzle and directly liquidates, it is to avoid nozzle scaling loss, in the prolonging nozzle life-span, changes
Device performance is entered.
Specifically, in present embodiment as shown in Figure 2, top nozzle 8b and lower nozzle 8a is all higher than two and (is illustrated as 4
It is individual) and be circumferentially equidistantly spaced from respectively.Wherein, eccentric angle a of top nozzle 8b and lower nozzle 8a Off-Radials be both preferably 0～
30 °, to form large scale vortex or percussion flow, reinforcing coal fuel particle and gasifying agent around the inwall of vertical cylinder shape housing 7
Or water vapour etc. mixed process and improve the time of staying of the fuel particle in stove, imitate with engineering so as to reach good technique
Really, the advantage of high available gas composition, efficiency of carbon con version height and furnace wall refractory liner life-span length is realized.
Further, coal gasification apparatus of the invention preferably include forming gas pipeline 9, the forming gas pipeline 9
Bottom be connected to the syngas outlet 4 of epimere vaporizer 2.Synthesis gas from the outflow of syngas outlet 4 is in the longer conjunction of length
A small amount of gasification reaction can be further produced in gas pipeline 9, so as to increase hydrogen output.
Preferably, CaO adsorbents are also provided with epimere vaporizer 2 and/or forming gas pipeline 9.Adsorbed by CaO
Agent etc. absorbs main component carbon dioxide in synthesis gas etc., improves final hydrogen purity.For example can be in forming gas pipe
The two ends in road 9 arrange sieve plate, and CaO adsorbent such as calcium oxide particles are filled between sieve plate, and synthesis gas is entered by sieve aperture and synthesized
Feed channel, contacts when flowing up with calcium oxide particle.It will be appreciated to those of skill in the art that its other party may also be employed
Formula, for example, make synthesis gas pass through lime water spray column to remove CO2, and then the synthesis gas of Gao Qing/carbon ratio is realized by membrance separation
Deng.In the present embodiment, it is furthermore preferred that for ease of arranging or safeguarding CaO adsorbents etc., more by epimere vaporizer 2 or can close
It is removable two-part structure into the relative set of gas pipeline 9.
Referring to Fig. 1, epimere vaporizer 2 and hypomere combustion gasification room 1 are both preferably cylindrical chamber, its a diameter of D, epimere
Aditus laryngis section 3 between vaporizer 2 and hypomere combustion gasification room 1 by radially reducing is connected, mutually to separate and strengthens to be vortexed and exists
Each gasification indoor time of staying.Wherein, flame temperature for being produced according to combustion reaction etc. determines the axle of hypomere combustion gasification room 1
To height H1, it is generally preferable to which, for 1D～5D, correspondingly, the axial height H2 of epimere vaporizer 2 is preferably 1D～3D, forming gas
The diameter of pipeline 9 is preferably 0.05D～0.5D and axial height is preferably 1.5D～8D.The above-mentioned preferred size of each reaction chamber
Ratio is intended to optimize interior flow field and reaction time, makes to form eddy flow, the centrifugal force produced using eddy flow in reaction chamber
Take slag to vaporizer side wall, form certain thickness slag blanket and protect wall.In addition when following coal gasification reactions are carried out,
The length of hypomere combustion gasification room 1, epimere vaporizer 2 and forming gas pipeline 9 should meet：Make in hypomere combustion gasification room 1
Time of staying of reacting gas be of about 2～5 seconds, the time of staying of the reacting gas in epimere vaporizer 2 is about 2～4
Second；And the time of staying of the forming gas in forming gas pipeline 9 is about 1～3 second.This time of staying design can ensure
Sufficient carbon burn-off rate and water gas shift reaction.Certainly, the size of each pipeline chamber of the above is arranged and is not limited to this, can root
Adjust accordingly according to different technological requirements.
In the present embodiment, the housing of epimere vaporizer 2 and hypomere combustion gasification room 1 is both preferably lining of fire brick knot
The vertical cylinder shape housing 7 of structure or water-cooling wall lining structure, spaced radial ground is provided with pressure outside vertical cylinder shape housing 7
Container casing 10, is formed with noble gases pressurising room 11 between the vessel shell 10 and vertical cylinder shape housing 7, to ensure
The external and internal pressure of vertical cylinder shape housing 7 is balanced, that is, protect vertical cylinder shape housing 7 to avoid pressurized, and pressure is transferred to into pressure
Force container housing 10 so as to which the external and internal pressure for bearing substantially 2～6.5MPa is poor.
According to above-mentioned coal gasification apparatus, the coal gasification of the rich hydrogen producing of the coal gasification apparatus shown in employing Fig. 1 set forth below
Method, the method includes：After hypomere combustion gasification room 1 is preheated, it is passed through toward in hypomere combustion gasification room 1 by lower nozzle 8a
Coal fuel and gasifying agent, are steamed with producing burning and gasification reaction, and water being passed through toward in epimere vaporizer 2 by top nozzle 8b
Vapour, to produce further water gas shift reaction.
Carbon-containing fuel (such as dry pulverized coal) Jing induction systems, coal gasification apparatus are sprayed into gasifying agent (oxygen) from lower nozzle 8a
Hypomere combustion gasification room 1；High-pressure water vapor sprays into epimere vaporizer 2 from top nozzle 8b.
Course of reaction of the carbonaceous material in coal gasification apparatus is broadly divided into following several stages：
1), fuel and oxygen are produced based on burning in hypomere combustion gasification room 1 and are accompanied by the pyroreaction of gasification, instead
Answer temperature can reach 1200 DEG C～1400 DEG C even more than, it is ensured that deslagging temperature is higher than fuel ash fusion point and forms flowable state lime-ash
Enter to bottom slag bath 5, react the high-temperature flue gas for producing and flow up into epimere vaporizer 2, fuel particle is with air-flow in stove
It is interior to form vortex flow field, improve the time of staying of granule；
2), about 300 DEG C of high pressure superheated steam sends into epimere vaporizer 2 simultaneously by four top nozzle 8b of epimere vaporizer 2
Vortex flow field is formed, is mixed with uncombusted granule with the high-temperature flue gas produced from hypomere combustion gasification room 1, occurred with water gas change
Reaction, the gasification reaction based on reforming reaction are changed, the reaction temperature in epimere vaporizer 2 is controlled at 700 DEG C～1000 DEG C or so；
3), in epimere vaporizer 2, still unburnt bulky grain drops downward into hypomere combustion gasification due to the effect of gravity etc.
Room 1 carries out the reaction based on burning, and by the thorough after-flame of its contained carbon residue.Tiny fly ash granule is flowed up with air-flow, with
Synthesis gas together flows out from the syngas outlet 4 on top；
4), in the inner space of the relatively low synthesis gas pipeline 9 of the relative temperature on the top of coal gasification apparatus, can also occur
A small amount of gasification and transformationreation, further increase the content of hydrogen in synthesis gas.
Wherein, due to reacting subregion, and rationalization high-temp combustion and gasification in coal gasification apparatus using two-part
Two classes are reacted, and greatly improve overall efficiency of carbon con version, cold gas efficiency of coal gasification apparatus etc., and in-furnace temperature obtains rationally excellent
Change, the hydrogen content in final syngas product is significantly improved, and is especially suitable for the large-scale Coal Chemical Industry with hydrogen as target product
Technique.
Specific embodiment
Using the coal gasification apparatus shown in Fig. 1 and Fig. 2, the coal fuel that lower nozzle 8a is sprayed into is dry pulverized coal and pure oxygen, upper spray
Mouth 8b spray into for 300 DEG C of high pressure superheated steam.
Wherein, oxygen coal ratio=0.78, steam coal rates=2, the coal fuel that lower nozzle 8a is sprayed into steams with the water that top nozzle 8b is sprayed into
The steam coal rates (mass ratio) between vapour is preferably between 1:1.5-2.0, can typically cause the temperature in epimere vaporizer 2 to be situated between
Between 650-950 DEG C.
Testing result shows：Efficiency of carbon con version in hypomere combustion gasification room 1 is 98%, the efficiency of carbon con version of epimere vaporizer 2
For 99%.
Wherein, 1401 DEG C of the reaction temperature of hypomere vaporizer 1, hypomere vaporizer 1 enters the synthesis gas of epimere vaporizer 2
Composition is shown in Table 1.
Table 1：The composition of the synthesis gas that hypomere vaporizer 1 is discharged
| Synthesis gas constitutes (butt) |
| N2 | 10.5% |
| H2 | 24.9% |
| CO | 63.1% |
| CO2 | 1.1% |
| H2S | 0.1% |
| CH4 | 0.2% |
928 DEG C of reaction temperature in epimere vaporizer 2, the composition of the synthesis gas that its syngas outlet 4 flows out is shown in Table 2.
Table 2：The composition of the synthesis gas that syngas outlet 4 is discharged
| Synthesis gas constitutes (butt) | |
| N2 | 7.9% |
| H2 | 41.5% |
| CO | 17.5% |
| CO2 | 30.0% |
| H2S | 0.1% |
| CH4 | 2.9% |
In the synthesis gas of the final institute's output of this coal gasification apparatus, H2Molar content be more than 40%, and in general gasification furnace
Dry coal powder gasification institute output synthesis gas in H2Content generally not higher than 30%, thus the coal gasification apparatus of the present invention and its
Coal gasification method can be by a relatively large margin the final synthesis gas of raising hydrogen content.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, but, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the present invention, various letters can be carried out to technical scheme
Monotropic type, these simple variants belong to protection scope of the present invention without departing from the design of the present invention.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The compound mode of energy is no longer separately illustrated.
Additionally, combination in any can also be carried out between a variety of embodiments of the present invention, as long as it is without prejudice to this
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (13)
1. a kind of coal gasification apparatus, the coal gasification apparatus include epimere vaporizer (2) and the hypomere combustion gasification room being interconnected
(1), the epimere vaporizer (2) is provided with syngas outlet (4), and the hypomere vaporizer (1) is provided with slag-drip opening (6), and institute
The perisporium for stating epimere vaporizer (2) is provided with the top nozzle (8b) stretched in the epimere vaporizer (2), the hypomere combustion gas
The perisporium for changing room (1) is provided with circumferentially spaced arrangement and stretches into the lower nozzle (8a) in the hypomere combustion gasification room (1), its
Described in top nozzle (8b) can be used in spray into water vapour to produce water gas shift reaction.
2. coal gasification apparatus according to claim 1, wherein, the top nozzle (2) and the lower nozzle (1) are all higher than two
It is individual and be circumferentially equidistantly spaced from respectively.
3. coal gasification apparatus according to claim 2, wherein, the epimere vaporizer (2) and hypomere combustion gasification room (1)
Cylindrical chamber is all formed as, multiple top nozzles (8b) are with the bias side of the radial direction of the deviation epimere vaporizer (2)
To stretching in the epimere vaporizer (2), multiple lower nozzles (8a) are with the footpath of the deviation hypomere combustion gasification room (1)
To eccentric direction stretch in the hypomere combustion gasification room (1) so that spray material can be in the epimere vaporizer (2)
It is vortexed with being formed in hypomere combustion gasification room (1).
4. coal gasification apparatus according to claim 3, wherein, the top nozzle (8b) and lower nozzle (8a) deviate the footpath
To eccentric angle (a) be 0～30 °.
5. coal gasification apparatus according to claim 1, wherein, the coal gasification apparatus include being located at the epimere vaporizer
(2) lower section and the multiple described hypomere combustion gasification room (1) that is interconnected, and/or the coal gasification apparatus be included in it is described under
The multiple described epimere vaporizer (2) that section combustion gasification room (1) top is interconnected.
6. coal gasification apparatus according to any one in Claims 1 to 5, wherein, the coal gasification apparatus also include closing
Into gas pipeline (9), the bottom of the forming gas pipeline (9) is connected to the syngas outlet of the epimere vaporizer (2)
(4)。
7. coal gasification apparatus according to claim 6, wherein, the epimere vaporizer (2) and hypomere combustion gasification room (1)
The cylindrical chamber of a diameter of D is, by radially between the epimere vaporizer (2) and the hypomere combustion gasification room (1)
The aditus laryngis section (3) of diminution is connected；
Wherein, the axial height of the hypomere combustion gasification room (1) be 1D～5D, the axial height of the epimere vaporizer (2)
For 1D～3D, a diameter of 0.05D～0.5D and axial height of the forming gas pipeline (9) are 1.5D～8D.
8. coal gasification apparatus according to claim 6, wherein, the epimere vaporizer (2) and/or the forming gas pipe
Road is additionally provided with CaO adsorbents in (9).
9. coal gasification apparatus according to claim 6, wherein, the epimere vaporizer (2) and hypomere combustion gasification room (1)
Housing be vertical cylinder shape housing (7) of lining of fire brick structure or water-cooling wall lining structure, the coal gasification apparatus are also
The vessel shell (10) arranged outward around the vertical cylinder shape housing (7) including spaced radial, the pressure shell
Noble gases pressurising room (11) is formed between body (10) and the vertical cylinder shape housing (7).
10. a kind of coal gasification side of the rich hydrogen producing of the coal gasification apparatus using according to any one in claim 1～9
Method, the method includes：After the hypomere combustion gasification room (1) is preheated, fired toward the hypomere by the lower nozzle (8a)
Burn in vaporizer (1) and be passed through coal fuel and gasifying agent, it is to produce burning and gasification reaction and past by the top nozzle (8b)
Water vapour is passed through in the epimere vaporizer (2), to produce further water gas shift reaction.
The coal gasification method of 11. rich hydrogen producings according to claim 10, wherein, in the hypomere combustion gasification room (1)
Reaction temperature be controlled to 1200 °～1400 °, the reaction temperature in the epimere vaporizer (2) is controlled to 700 °～1000 °.
The coal gasification method of 12. rich hydrogen producings according to claim 10, wherein, it is described that the lower nozzle (8a) sprays into
Mass ratio between the water vapour that coal fuel is sprayed into the top nozzle (8b) is 1:1.5-2.0.
The coal gasification method of 13. rich hydrogen producings according to claim 10, wherein, in the hypomere combustion gasification room (1)
Time of staying of reacting gas be 2～5 seconds, time of staying of the reacting gas in the epimere vaporizer (2) is 2～4 seconds；
And the syngas outlet (4) is connected with forming gas pipeline (9), and reacting gas is in the forming gas pipeline (9)
The time of staying is 1～3 second.
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| CN108395909A (en) * | 2018-05-14 | 2018-08-14 | 北京金泰瑞和工程科技有限公司 | Dry coal powder pressure gasifying system |
| CN110243992A (en) * | 2018-03-09 | 2019-09-17 | 国家能源投资集团有限责任公司 | The preparation method and Catalyst evaluation test system of evaluating catalyst unstripped gas |
| CN110358585A (en) * | 2018-04-09 | 2019-10-22 | 成都聚实节能科技有限公司 | A method of hydrocarbon-rich hydrogen coal gas and water-gas are produced in classification |
| CN112831352A (en) * | 2021-01-09 | 2021-05-25 | 中国华能集团清洁能源技术研究院有限公司 | Efficient gasification furnace and working method thereof |
| CN113491351A (en) * | 2021-06-07 | 2021-10-12 | 中国科学院深圳先进技术研究院 | Electronic cigarette utensil |
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| CN102911740A (en) * | 2012-09-28 | 2013-02-06 | 上海锅炉厂有限公司 | Two-section gasifying device of entrained-flow bed and gasifying method of two-section gasifying device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102911740A (en) * | 2012-09-28 | 2013-02-06 | 上海锅炉厂有限公司 | Two-section gasifying device of entrained-flow bed and gasifying method of two-section gasifying device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110243992A (en) * | 2018-03-09 | 2019-09-17 | 国家能源投资集团有限责任公司 | The preparation method and Catalyst evaluation test system of evaluating catalyst unstripped gas |
| CN110358585A (en) * | 2018-04-09 | 2019-10-22 | 成都聚实节能科技有限公司 | A method of hydrocarbon-rich hydrogen coal gas and water-gas are produced in classification |
| CN110358585B (en) * | 2018-04-09 | 2021-06-22 | 成都聚实节能科技有限公司 | Method for preparing hydrogen-rich gas and water gas in grading manner |
| CN108395909A (en) * | 2018-05-14 | 2018-08-14 | 北京金泰瑞和工程科技有限公司 | Dry coal powder pressure gasifying system |
| CN112831352A (en) * | 2021-01-09 | 2021-05-25 | 中国华能集团清洁能源技术研究院有限公司 | Efficient gasification furnace and working method thereof |
| CN112831352B (en) * | 2021-01-09 | 2021-09-07 | 中国华能集团清洁能源技术研究院有限公司 | Efficient gasification furnace and working method thereof |
| CN113491351A (en) * | 2021-06-07 | 2021-10-12 | 中国科学院深圳先进技术研究院 | Electronic cigarette utensil |
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Address after: 100011 Beijing Dongcheng District, West Binhe Road, No. 22 Patentee after: CHINA ENERGY INVESTMENT Corp.,Ltd. Patentee after: Beijing low carbon clean energy research institute Address before: 100011 Shenhua building, 22 West Binhe Road, Dongcheng District, Beijing Patentee before: SHENHUA GROUP Corp.,Ltd. Patentee before: Beijing low carbon clean energy research institute |