CN106544061A - A kind of high oil-producing slag gasification furnace and coal gasification method - Google Patents
A kind of high oil-producing slag gasification furnace and coal gasification method Download PDFInfo
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- CN106544061A CN106544061A CN201611051448.1A CN201611051448A CN106544061A CN 106544061 A CN106544061 A CN 106544061A CN 201611051448 A CN201611051448 A CN 201611051448A CN 106544061 A CN106544061 A CN 106544061A
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- coal
- slag
- gasification
- gasification furnace
- furnace
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- 238000002309 gasification Methods 0.000 title claims abstract description 119
- 239000003245 coal Substances 0.000 title claims abstract description 68
- 239000002893 slag Substances 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims description 13
- 239000007788 liquid Substances 0.000 claims abstract description 9
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000004615 ingredient Substances 0.000 claims abstract description 6
- 238000003763 carbonization Methods 0.000 claims abstract description 3
- 239000002826 coolant Substances 0.000 claims description 31
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 238000002485 combustion reaction Methods 0.000 claims description 13
- 239000012530 fluid Substances 0.000 claims description 11
- 230000007704 transition Effects 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 3
- 239000003818 cinder Substances 0.000 claims 1
- 238000001035 drying Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 28
- 239000011269 tar Substances 0.000 abstract description 23
- 239000006227 byproduct Substances 0.000 abstract description 19
- 239000000047 product Substances 0.000 abstract description 10
- 239000003208 petroleum Substances 0.000 abstract description 8
- 239000003034 coal gas Substances 0.000 abstract description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 6
- 239000011280 coal tar Substances 0.000 abstract description 4
- 229910021529 ammonia Inorganic materials 0.000 abstract description 3
- 239000000284 extract Substances 0.000 abstract description 3
- 239000007787 solid Substances 0.000 abstract description 3
- 238000001311 chemical methods and process Methods 0.000 abstract description 2
- 239000011335 coal coke Substances 0.000 abstract description 2
- 239000000571 coke Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 33
- 239000007789 gas Substances 0.000 description 20
- 239000002245 particle Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000007791 liquid phase Substances 0.000 description 5
- 150000002989 phenols Chemical class 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000000197 pyrolysis Methods 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 150000003384 small molecules Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- -1 and CNPC's shortage Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- XABJJJZIQNZSIM-UHFFFAOYSA-N azane;phenol Chemical compound [NH4+].[O-]C1=CC=CC=C1 XABJJJZIQNZSIM-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 235000013877 carbamide Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003250 coal slurry Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- KSSNXJHPEFVKHY-UHFFFAOYSA-N phenol;hydrate Chemical compound O.OC1=CC=CC=C1 KSSNXJHPEFVKHY-UHFFFAOYSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/58—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels combined with pre-distillation of the fuel
- C10J3/60—Processes
-
- 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
- C10J3/02—Fixed-bed gasification of lump fuel
- C10J3/20—Apparatus; Plants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/721—Multistage gasification, e.g. plural parallel or serial gasification stages
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Industrial Gases (AREA)
Abstract
In order to solve the problems, such as that entrained flow bed gasification technology and some other Coal Gasification Technology do not have liquid by-product and the gasification of fixed bed lurgi gasifier and slag gasification technology oil productivity low, the invention provides a kind of slag gasification furnace of high oil-producing, coal is added in slag gasification furnace from the top of slag gasification furnace, is carried out burning in the bottom of slag gasification furnace and is formed slag and raw gas；Tar and oil ingredient and phenol component are isolated from raw gas.The present invention improves the sub-prime comprehensive utilization of coal, make full use of fixed bed Coal Gasification gas-solid counter-current flow principle, first by coal day-coal pyrogenation and carbonization, extract lightweight volatile components in coal, obtain coal tar, coal gas and coke, again coke slag is gasified and produces coal gas, therefore realize the efficient utilization of oil product and light components in the coal of different chemical processes in the same apparatus, the side-product of such as various high added values such as tar, oil, phenol, ammonia, Petroleum can be obtained.
Description
Technical field
The present invention relates to a kind of coal gasifier, more particularly to a kind of a kind of slag gasification furnace and high oil-producing of high oil-producing
Coal gasification method.
Background technology
Coal is in addition to for generating electricity with but heat, and main industrial chemicals, and CNPC's shortage, coal resources are relative
Abundant, in the gross reserves of generaI investigation, the coal reserves that can be used to refine oil is huge, if by the oil extract of coal out, not only can be with
Artificial petroleum is obtained, the raw material of industry and high-grade fuel of high added value can also be obtained, but at present, be actually used in the coal of oil refining
It is little.
In order to further improve the efficiency of energy utilization of the utilization ratio and coal of coal, water resource during reduction coal utilization
Consumption, reduces environmental pollution, and modern society develops many new techniques to coal grading sub-prime using increasingly paying attention to, but
It is that these new techniques all also have a certain distance from commercial Application, is only limitted to laboratory scale or technical identification stage.For with
The Modern Coal-based Chemical of the raw material of industry coal based on coal gasification production synthesis gas, industrialized pressurized coal gasification technology, main
(for example lurgi gasifier is done for entrained flow bed gasification technology (such as dry coal powder gasification, coal water slurry gasification etc.) to be included, fixed bed gasification technology
Bottom moving bed gasification, BGL slags gasification) etc. technology.
Air-flow bed technique is mainly so that SHELL (shell) dry coal powder pressure gasifying, GSP be powdered coal pressuring gasified and Texaco's water coal
Slurry pressurized gasification is representative, with pure oxygen as gasifying agent, carries out slag gasification at high temperature under high pressure, only has micro first in raw gas
Alkane, does not produce the side-products such as tar, naphthalene and phenol water, and the oil contained in coal and fugitive constituent are all cracked into simplest small molecule,
Therefore no fluid product output.
Fixed bed gasification technology is a kind of gasification installation that blocks of solid carbon-containing fuel is converted into raw gas, and raw gas is
Indispensable unstripped gas in commercial production, the chemical products prepared by the effective ingredient carbon monoxide in raw gas and hydrogen
Including artificial oil, carbamide, methanol, ethylene glycol etc..It is in coal gasification producer of the country at present to adopt fixed bed gasification technology as life more
The main Coal Gasification Technology of unstripped gas is produced, fixed bed gasification technology includes crushed coal pressurized-gasification furnace gasification technology (lurgi gasifier), broken
Coal pressurization slag gasification technology (BGL stoves) and fixed-bed intermittent gasification technology (UGI).
Lurgi gasifier bed technology adopts dry ash extraction, and furnace temperature is low, coal and gasifying agent reverse flow, in the stove by down to
On sequentially form combustion zone, gasification zone and dry distillation area (burning zone, gasification layer, dry distilling layer), carry out combustion reaction in burning zone, carry
For the heat needed for gasification reaction；Gasification reaction of water vapour and C etc. is carried out in gasification layer；There is more methane life in methane layer
Into；In dry distilling layer, the mainly volatile relese in coal out.It is miscellaneous containing a certain amount of tar, phenol, ammonia etc. in gained raw gas
Matter, it is separated after can be as liquid by-product, with good economy.
Fixed bed slag gasification technology combines the advantage of the high rate of gasification of air flow bed slag gasification technology and the high intensity of gasification
And furnace binding cheap advantage low with lurgi gasifier fixed bed pressured gasification technology oxygen consumption, overcomes air flow bed slag gasification technology
High energy consumption is with high investment and lurgi gasifier fixed bed pressured gasification technology wastewater flow rate is big, the high shortcoming of difficult treatment and processing cost, tool
There are few construction investment, cycle is short, productivity ratio height, the comprehensive advantage that operating cost is low, maintenance cost is low.The dry distillation area of its gasification furnace
Tar and oil are produced, is entrained in raw gas.Raw gas isolates tar and oil through wash cooling, while isolating certain
The phenol wastewater of amount higher concentration phenol ammonia.These are the side-product of high added value, can be as the raw material of rear processing, or directly
Sell as side-product, with good economic benefit.The Typical Representative of the technology is exactly BGL slag gasification furnaces and slag gasification
Technology.
Although and the representative lurgi gasifier gasification of bed technology and slag gasification technology main purpose have been in the market
Into coal gasification, part fluid product can be produced, but oil productivity is only the 50% or so of aluminium retort analysis oil content, remaining
Oily ingredient and volatile components are also reacted to small molecule, therefore, oil productivity is still low.
The content of the invention
There is no liquid by-product and fixed bed to solve air flow bed slag gasification technology and some other Coal Gasification Technology
Lurgi gasifier gasifies and the low problem of slag gasification technology oil productivity, the invention provides a kind of slag gasification of new high oil-producing
Stove and a kind of coal gasification method of high oil-producing, to obtain bigger oil productivity.
One side of the invention is to provide in a kind of slag gasification furnace of high oil-producing, including hollow body of heater, body of heater by under
It is supreme including combustion zone, gasification zone and dry distillation area.
Second aspect of the invention is to provide a kind of coal gasification method of high oil-producing, including：
Coal is added in slag gasification furnace from the top of slag gasification furnace, carries out burning shape in the middle bottom of slag gasification furnace
Into slag and raw gas；
Raw gas Jing furnace roofs are escaped, and into follow-up workshop section, isolate tar and oil ingredient and phenol component.
In one preferred embodiment of the invention, the slag gasification furnace ratio of height to diameter is preferably at least 2.2, is more preferably
At least 2.5, such as 2.2-3.5, more preferably more preferably 2.2-3.0,2.5-2.8.Wherein, " height " in the ratio of height to diameter is referred to
" height of molten slag bath to top ".
In one preferred embodiment of the invention, the distance that molten slag bath liquid level to raw gas is exported is preferably >=10m, more
Preferably >=12m, such as 14m, 15m, 16m, 18m etc..
In one preferred embodiment of the invention, slag gasification furnace gasification zone arrange coolant jet, for
Gasification zone sprays coolant and gasification zone is lowered the temperature.
Wherein, the coolant is preferably water, vapor or combination.
In one preferred embodiment of the invention, the gasification zone temperature of the slag gasification furnace is preferably less than combustion zone
50-800 DEG C, more preferably 100～600 DEG C, more preferably 150～500 DEG C, more preferably 200～400 DEG C, such as 250 DEG C, 300
℃。
In one preferred embodiment of the invention, the slag gasification furnace combustion zone temperature is preferably >=1500 DEG C, more
Preferably >=1800 DEG C, more preferably >=2000 DEG C.
In one preferred embodiment of the invention, the gasification zone temperature is preferably 1000-1500 DEG C, more preferably
1100-1400℃。
Wherein, the nozzle can be odd number or even number, and can be in sustained height or differing heights.
In a kind of preferred embodiment, nozzle ring is uniformly distributed around body of heater inner surface.
Described coolant jet is consistent with the gasifying agent nozzle layout of combustion zone, wherein, the layout unanimously refer to
The quantity or density, distribution angle, injector spacing of few coolant jet is consistent with gasifying agent nozzle；Also, each gasification
Coolant jet is provided with above agent nozzle.
In one preferred embodiment of the invention, the coolant jet fluid passage is located at furnace interior point including gradually
Contracting section, throat and divergent segment, wherein, the flow channel cross-sections product of the converging transition from fluid passage body part to throat by
Step reduces, and the flow channel cross-sections product of the divergent segment is progressively expanded from throat to least significant end.
Wherein, between the divergent segment inwall and throat's inwall, angle is preferably 10 ° -30 °.
In a kind of more preferred embodiment of the present invention, the coolant jet divergent segment inwall is provided with guiding gutter, institute
State guiding gutter from throat connection end to divergent segment end extend.It is highly preferred that the guiding gutter is angularly disposed or spiral is arranged.
Wherein, it is described angularly disposed to refer to guiding gutter direction not in the diametric(al) of fluid passage.
In a kind of preferred embodiment of the invention, coal particle diameter is preferably >=3mm, more preferably >=4mm, more preferably
>=5mm, more preferably >=6mm.
In a kind of more preferred embodiment of the present invention, the coal particle diameter is preferably≤50mm, more preferably≤
40mm, more preferably≤30mm.
In a kind of more preferred embodiment of the present invention, coal particle diameter such as 6-50mm, the preferably 8-45mm are more excellent
Elect 10-40mm, more preferably more preferably 15-35mm, 20-30mm as.
In one preferred embodiment of the invention, in the slag gasification furnace, pressure is preferably 15-50bar, more preferably
For 20-40bar, more preferably 25-35bar.
In one preferred embodiment of the invention, there is no the anti-stove step of tar；Or there is no the anti-stove of tar be
System.
In one preferred embodiment of the invention, the slag gasification furnace is also locked including the coal at top.
Wherein, the coal lock quantity is preferably two.
In present invention further optimization embodiment, the coal lock is connected to body of heater by Y type transitional storehouses.
In a kind of more preferred embodiment of the present invention, two coal locks are alternately to coal in body of heater.
The present invention improves the sub-prime comprehensive utilization of coal, makes full use of fixed bed Coal Gasification gas-solid counter-current flow former
Reason, first by coal day-coal pyrogenation and carbonization, extracts lightweight volatile components in coal, obtains coal tar, coal gas and coke, then by Jiao
Charcoal slag gasification production coal gas, therefore oil product and light components in the coal of different chemical processes are realized in the same apparatus
Efficient utilization, can obtain the side-product of such as various high added values such as tar, oil, phenol, ammonia, Petroleum.
Description of the drawings
Fig. 1 is slag gasification furnace structural representation in an embodiment of the present invention；
Fig. 2 is coolant jet, gasifying agent nozzle identical (A) and different (B) layout feelings in an embodiment of the present invention
Cooling effect contrast schematic diagram under condition；
Fig. 3 is coolant jet fluid channel structure schematic diagram in an embodiment of the present invention；
Fig. 4 is coolant jet divergent segment guiding gutter setting schematic diagram in an embodiment of the present invention；
Fig. 5 is cooling effect (A) and conventional nozzle cooling effect (B) contrast schematic diagram under Fig. 4 guiding gutter facilities.
Specific embodiment
Embodiment 1
Reference Fig. 1, the invention provides a kind of slag gasification furnace of high oil-producing, including body of heater 1, bottom of furnace body is molten slag bath
3, body of heater includes combustion zone, gasification zone and dry distillation area from the bottom to top.
Body of heater molten slag bath exports 14 meters of distance, body of heater ratio of height to diameter 2.0 to top raw gas.
Inventor has found that coal particle size is more little more uniform, for this purpose, easier analysis of tar and fugitive constituent whole in coal
Go out.On the premise of gasification furnace gasification performance is met, as-fired coal particle size is more little more uniform better, can increase the liquid of coal
Body byproduct yield.Coal of the present embodiment using 6-50mm particle diameters.
Coal enters body of heater 1 by Y types transitional storehouse from top coal lock 5, in combustion zone, is provided with nozzle 2, for spraying into gasification
Agent, such as vapor and oxygen.1800 DEG C of base burning area temperature.
The present invention is not provided with the case of tar returns stove step, and carries out coal gas respectively using 40bar and 25bar pressure
Change.Inventor will be not provided with tar and return stove step with the parameter index contrast in the case of stove step two kind is returned using tar, knot
Fruit such as table 1.
1. tar of table returns the impact of stove and pressure condition to oil productivity
In the case of comparing as can be seen that cancellation tar returns stove step, little is affected on gasification furnace production capacity, but
It is that tar yield is significantly increased.With tar, it is middle oil, four kinds of liquid phase side-products of Petroleum and crude phenols total output as calculating benchmark,
As can be seen that at the same pressure, tar does not return stove, and liquid phase side-product yield can improve 6.6%～7.9% respectively.
Additionally, operating pressure also has this obvious impact to oil productivity, with tar, middle oil, four kinds of liquid of Petroleum and crude phenols
The ton coal by-product amount of phase side-product is calculating benchmark, and under the configuration of identical flow process, operating pressure is reduced to from 40bar
25bar, liquid phase side-product yield can improve 20.5%-18.9%, especially Petroleum respectively and crude phenols yield is obviously improved.
Embodiment 2
Body of heater molten slag bath exports 16 meters of distance, body of heater ratio of height to diameter 2.3 to top raw gas.Compared to existing lurgi gasifier or molten
Slag gasification furnace and embodiment 1, feed coal of the present invention and the coal gas time of staying and time of contact are longer, and coal gas is coal particle
Fully heat and displace lightweight oily ingredient therein, including coal tar and fugitive constituent.Reduce the descending entrainment of coal particle after dry distilling
Coal tar and volatile content, improve raw gas yield and tar content therein, so as to improve liquid by-product yield.Together
When, discharged producer gas temperature is still maintained at zone of reasonableness, it is to avoid temperature is too low to cause raw gas entrained liquids side-product ability mistake
It is low.
2000 DEG C of base burning area temperature.
Remaining is with reference to embodiment 1.
The high impact to oil productivity of 2. stove of table
From table 2 it can be seen that tar, it is middle oil, four kinds of product yields of Petroleum and crude phenols have lifting, with tar, it is middle oil,
The total output of four kinds of liquid phase side-products of Petroleum and crude phenols is calculating benchmark, and under 2 scheme of embodiment, liquid phase side-product yield can
To improve 0.35%；This explanation, in the embodiment of the present invention 2, stove height can obtain higher oil productivity after optimization.
In addition, inventor also has found, gasification zone temperature is reduced, and can in a disguised form extend gasification section length, and be conducive to
Oil generates direction to be developed.For this purpose, in the gasification zone of body of heater 1, coolant jet 4 is provided with, for spraying into coolant to gasification zone, such as
Water or vapor, gasification zone is lowered the temperature.
Coolant jet is set in gasification zone, gasification zone temperature is decreased below into 300 DEG C of combustion zone temperature.Coolant sprays
Mouth is consistent with gasifying agent nozzle layout, it means that the parameter such as nozzle direction, distance, density is consistent, also, each gasifying agent
A coolant jet is provided with above nozzle, i.e., in addition to height, gasifying agent nozzle layout is complete with coolant jet layout
Unanimously.With reference to Fig. 2A, in the case that gasifying agent nozzle is consistent with coolant jet layout, coolant cooling is interval to be sprayed with gasifying agent
Enter interval to be consistent or close, so as to have more preferable cooling-down effect, if layout is different, as shown in Figure 2 B, coolant drop
10 between warm area, (solid line region) and gasifying agent to be sprayed into and there is blind area between interval 11 (dashed regions), and cooling-down effect is poor.
With reference to Fig. 3, coolant jet of the present invention extend into the part inside gasification furnace, fluid line include converging transition 41,
Throat 42 and divergent segment 43, the flow channel cross-sections product of converging transition 41 is from furnace wall fluid passage part 44 of gasifying to throat 42
Progressively reduce, the flow channel cross-sections product of divergent segment 43 from progressively amplifying to least significant end with throat 42 connection end, divergent segment inwall
Angle can be arbitrarily angled in the range of 10 ° -30 ° between throat inwall.Converging transition 41 is reduced due to sectional area, and fluid exists
Converging transition accelerates, and so as to increase jet length, divergent segment then guides coolant to spray into the region of greater angle.With reference to Fig. 4,
Coolant jet is provided with guiding gutter 40, and guiding gutter 40 can be that to be obliquely installed (4A) can also be that spiral arranges (4B), reference picture
5, this setup of guiding gutter, after coolant ejection, overlay area 20 (solid line region) is sprayed more than the coolant of conventional nozzle
Go out rear overlay area 21 (dashed region), therefore cooling effect is more preferably.
But gasification zone temperature is unsuitable too low, meanwhile, body of heater is unsuitable too high, in order to avoid raw gas temperature is too low, is unfavorable for doing
Evaporate, can also reduce the ability that raw gas carries oil phase by-product secretly.
Above the specific embodiment of the present invention is described in detail, but which has been intended only as example, the present invention has not been limited
It is formed on particular embodiments described above.To those skilled in the art, any equivalent modifications carried out by the present invention and
Replacement is also all among scope of the invention.Therefore, the impartial conversion made without departing from the spirit and scope of the invention and
Modification, should all cover within the scope of the invention.
Claims (14)
1. a kind of slag gasification furnace of high oil-producing, including the row of the raw gas outlet at the top of hollow body of heater, body of heater and bottom of furnace body
Drying and carbonization area, gasification zone and combustion zone are followed successively by from top to bottom in cinder notch, body of heater, it is characterised in that in described body of heater
Gasification zone is provided with coolant jet, for spraying coolant to adjust the temperature of gasification zone to gasification zone.
2. slag gasification furnace according to claim 1, it is characterised in that described coolant jet can be odd number or idol
It is several, and on body of heater Tong mono- Transverse sections, and be uniformly distributed around body of heater inner surface.
3. slag gasification furnace according to claim 1, it is characterised in that the gasification of described coolant jet and combustion zone
Agent nozzle layout is consistent.
4. the slag gasification furnace according to any one in claim 1-3, it is characterised in that the coolant jet fluid
Passage is located at furnace interior point includes converging transition, throat and divergent segment, wherein, the flow channel cross-sections product of the converging transition by
Fluid passage body part is progressively reduced to throat, and the flow channel cross-sections product of the divergent segment is progressively expanded from throat to least significant end
Greatly.
5. slag gasification furnace according to claim 4, it is characterised in that the coolant jet divergent segment inwall is provided with
Guiding gutter, the guiding gutter are extended from throat to divergent segment end.
6. slag gasification furnace according to claim 5, it is characterised in that the guiding gutter is angularly disposed or spiral is arranged.
7. slag gasification furnace according to claim 1, it is characterised in that the slag gasification furnace ratio of height to diameter is at least 2.2.
8. slag gasification furnace according to claim 1, it is characterised in that slag liquid level to raw gas is exported in molten slag bath
Distance is at least 10m.
9. method according to claim 1, it is characterised in that the slag gasification furnace combustion zone temperature is higher than 1500 DEG C.
10. the slag gasification furnace according to claim 1 or 9, it is characterised in that the gasification zone temperature of the slag gasification furnace
Less than 50-800 DEG C of combustion zone.
11. slag gasification furnaces according to claim 1, it is characterised in that there is no the anti-furnace system of tar.
12. a kind of coal gasification methods of high oil-producing, it is characterised in that include：Coal is added to right from the top of slag gasification furnace
In requiring gasification furnace described in 1, burning is carried out in the middle bottom of gasification furnace and form slag and raw gas；Raw gas Jing furnace roofs are escaped,
Into follow-up workshop section, tar and oil ingredient and phenol component are isolated.
13. methods according to claim 12, it is characterised in that pressure is 15-80bar in the slag gasification furnace.
14. methods according to claim 12, it is characterised in that there is no the anti-stove step of tar.
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| CN106544061B (en) | 2022-04-12 |
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