CN110055116A - Hydrogasification semicoke pulping process - Google Patents
Hydrogasification semicoke pulping process Download PDFInfo
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- CN110055116A CN110055116A CN201811171627.8A CN201811171627A CN110055116A CN 110055116 A CN110055116 A CN 110055116A CN 201811171627 A CN201811171627 A CN 201811171627A CN 110055116 A CN110055116 A CN 110055116A
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- semicoke
- fresh water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/82—Combinations of dissimilar mixers
- B01F33/821—Combinations of dissimilar mixers with consecutive receptacles
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/32—Liquid carbonaceous fuels consisting of coal-oil suspensions or aqueous emulsions or oil emulsions
- C10L1/326—Coal-water suspensions
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Abstract
The invention discloses a kind of hydrogasification semicoke pulping process comprising start-up and stable operation stage.The advantage of the invention is that, pass through pneumatic conveying, semicoke is delivered in venturi mixer and is mixed with industrial fresh water, semicoke is sufficiently drenched in advance, then the semicoke drenched is delivered in slurrying agitator tank, semicoke is directly entered below slurrying stirring jar liquid surface, with the industrial fresh water stirring pulping in slurrying agitator tank, ensure that semicoke is mixed into industrial fresh water to the greatest extent, improve half coke utilization, improves effects on slurry making；Be mixed with semicoke compressed gas enter semicoke processing chamber after, it is moved upwards via tower tray through-hole, semicoke is contacted with the moisture film on tower tray, semicoke is intercepted by moisture film and as the industrial fresh water of flowing is fallen after rise to slurrying agitator tank, carry out slurrying, half coke utilization is improved to 99%, is avoided semicoke caused by emptying and is wasted, reduces semicoke slurrying cost.
Description
Technical field:
The present invention relates to coal chemical technology, in particular to a kind of hydrogasification semicoke pulping process.
Background technique:
Hydrogasification refers to that carbon compound and hydrogen are anti-under the conditions of medium temperature (700-1000 DEG C) and high pressure (5-10MPa)
It answers, generates the process of the raw gas, high added value aromatic hydrocarbons oil product and high heating value semicoke that are rich in methane.Semicoke is also known as coalitenessity,
Grey black, volatile matter is higher than coke, and quality is loose porous, and reactivity worth is good, in coal chemical technology frequently as coal water slurry gasification original
Material uses.
Currently, semicoke is used for the process of coal water slurry gasification substantially, as shown in Figure 1, semicoke is ground through semicoke grinding machine 19, grind
The semicoke for grinding partial size qualification enters in half coke bin 17, and the semicoke in half coke bin 17 enters slurrying by semicoke delivery pipe 14 and stirs
It is mixed in tank 1 with water, slurry obtained is delivered to coal water slurry gasification feed conduit 25 by semicoke stock pump 23, for water-coal-slurry
Gasification uses；Evacuated tube 6 is equipped at the top of slurrying agitator tank 1,6 outlet end of evacuated tube is connect with 27 input end of air-introduced machine, evacuated tube 6
It is equipped with filter 28, avoids semicoke from enter in atmosphere with emptying operation, pollutes environment.Since semicoke quality is loose more
Hole when mixing with water, usually swims on the water surface and is difficult to mix, and effects on slurry making is poor, there are about the semicoke of mass ratio 10% without
Method success slurrying, in order to ensure slurrying quality, the semicoke that this part is not mixed with water generally passes through filter 28 and air-introduced machine 27
It draws outside slurrying agitator tank 1, in the process, on the one hand there is about 10% semicoke not efficiently used, cause resource
Waste, while having certain pollution to atmospheric environment；On the other hand, filter 28 and air-introduced machine 27 are contacted with semicoke for a long time,
Filter 28 and air-introduced machine 27 are easy to happen blocking and damage, influence the continual and steady progress of pulping process, pulping process is once
It interrupts, the progress of coal water slurry gasification process will be affected, reduce the efficiency of coal water slurry gasification.
Summary of the invention:
The purpose of the present invention is to provide a kind of half coke utilizations of raising, the hydrogasification semicoke of raising semicoke effects on slurry making
Pulping process.
The purpose of the present invention is implemented by following technical solution, hydrogasification semicoke pulping process, which is characterized in that it includes
Start-up and stable operation stage, in which:
1) start-up: the industrial fresh water of its volume 60-80% is added into slurrying agitator tank, semicoke is through pneumatic conveying
It is mixed in venturi mixer with the industrial fresh water being delivered in the venturi mixer, through the pneumatic conveying
Semicoke with the mass ratio of industrial fresh water being passed through in the venturi mixer be 5-8:5, obtain pre- slurrying；It is described prefabricated
Slurry, which enters in slurrying agitator tank, to be stirred, and during stirring, industrial fresh water is passed through into semicoke processing chamber, through described
The mass ratio of the semicoke of pneumatic conveying and the industrial fresh water being passed through in the semicoke processing chamber is 5-8:3；Industrial fresh water edge
Tower tray upper surface flowing, the tower tray upper surface formed water membrane, part not with the industry in the slurrying agitator tank
The semicoke that fresh water mixing is slurried enters in the semicoke processing chamber with the compressed gas of pneumatic conveying, and semicoke is via the tower tray
Through-hole move upwards and contacted with the moisture film on the tower tray, semicoke is intercepted by moisture film and as the industrial fresh water of flowing is fallen after rise
To slurrying agitator tank, semicoke slurry is stirred to get, the compressed gas of pneumatic conveying is discharged by the top of the semicoke processing chamber；Institute
It states semicoke slurry and is pumped by semicoke stock pump and sized mixing in tank, the semicoke sized mixing in tank starches a part and is back to the slurrying
60-80% in agitator tank to maintain the liquid level in the slurrying agitator tank as slurrying stirring tank volume, remaining described half
Coke slurry is sized mixing in tank described in being stored in, until the concentration of the semicoke slurry of the tank of sizing mixing is 30%-35%；
2) when the concentration that the semicoke of the tank of sizing mixing is starched is 30%-35%, the text will stable operation stage: be delivered to
The mass ratio of the semicoke of mixer and fresh process water is adjusted to 1:0.8-1.2 in mound, the semicoke through the pneumatic conveying and logical
The mass ratio for entering the industrial fresh water in the semicoke processing chamber is adjusted to 1:0.8-1.2, and obtained semicoke slurry is delivered to institute
It states and is stirred in tank of sizing mixing, obtain the qualified semicoke that concentration is 30%-35% and starch, the qualification semicoke is starched a part and is back to
60-80% in the slurrying agitator tank to maintain the liquid level in the slurrying agitator tank as slurrying stirring tank volume,
The remaining qualified semicoke slurry is delivered to coal water slurry gasification system.
Further, in the 1) start-up and the 2) stable operation stage, the pressure of the pneumatic conveying is
0.5-0.7MPa, the slurrying agitator tank operating pressure are 0.1-0.2MPa, and the mixing speed of the slurrying agitator tank is 30-
50r/min。
Further, in the 1) start-up and the 2) stable operation stage, into the semicoke processing chamber
The compressed gas after foam removal is handled, by the top of the semicoke processing chamber evacuated tube be discharged.
Further, in the 2) stable operation stage, when the semicoke slurry concentration sized mixing in tank is higher than 35%,
Stop conveying semicoke slurry to the coal water slurry gasification system, and be adjusted by the following method: first improving and stirred to the slurrying
The flow for the industrial fresh water being passed through in tank is mixed, then improves the flow for the industrial fresh water being passed through into the semicoke processing chamber,
In above process, if the semicoke slurry concentration sized mixing in tank is equal to the qualified semicoke slurry, restore through described
The semicoke of pneumatic conveying and the mass ratio for the industrial fresh water being passed through in the venturi mixer are 1:0.8-1.2, through described
The mass ratio of the semicoke of pneumatic conveying and the industrial fresh water being passed through in the semicoke processing chamber is 1:0.8-1.2；In above-mentioned mistake
The quality of Cheng Zhong, semicoke and the industrial fresh water being passed through in the semicoke processing chamber through the pneumatic conveying can be improved than highest
Quality to 5-8:9, semicoke and the industrial fresh water being passed through in the slurrying agitator tank through the pneumatic conveying can than highest
It improves to 5-8:9；When improving to the semicoke slurry concentration sized mixing in tank to 30-35%, restore to the coal water slurry gasification system
System conveying semicoke slurry.
Further, in the 2) stable operation stage, when the semicoke slurry concentration sized mixing in tank is lower than 30%,
Stop conveying semicoke slurry to the coal water slurry gasification system, and be adjusted by the following method: first reducing at the semicoke
The flow of the intracavitary industrial fresh water being passed through is managed, then reduces the flow for the industrial fresh water being passed through into the slurrying agitator tank,
In above process, if the semicoke slurry concentration sized mixing in tank is equal to the qualified semicoke slurry, restore through described
The semicoke of pneumatic conveying and the mass ratio for the industrial fresh water being passed through in the venturi mixer are 1:0.8-1.2, through described
The mass ratio of the semicoke of pneumatic conveying and the industrial fresh water being passed through in the semicoke processing chamber is 1:0.8-1.2；The above process
In, the mass ratio of semicoke through the pneumatic conveying and the industrial fresh water being passed through in the semicoke processing chamber is minimum to be reduced to
5-8:3, the mass ratio of semicoke through the pneumatic conveying and the industrial fresh water being passed through in the slurrying agitator tank is minimum to drop
Down to 5-8:5；When being reduced to 30-35% to the semicoke slurry concentration sized mixing in tank, restore to the coal water slurry gasification system
Convey semicoke slurry.
Advantages of the present invention: 1, by pneumatic conveying, semicoke is delivered in venturi mixer and is mixed with industrial fresh water
It closes, semicoke is sufficiently drenched in advance, then the semicoke drenched is delivered in slurrying agitator tank, semicoke is directly entered slurrying stirring
Below jar liquid surface, with the industrial fresh water stirring pulping in slurrying agitator tank, it is ensured that semicoke is mixed into industry to the greatest extent
In fresh water, half coke utilization is improved, improves effects on slurry making；2, since semicoke is entered in slurrying agitator tank through pneumatic conveying
, into slurrying agitator tank in but be not mixed into industrial fresh water semicoke will with pneumatic conveying compressed gas to semicoke processing chamber transport
Dynamic, the industrial fresh water flowed on the tower tray of semicoke processing chamber forms moisture film, and the compressed gas for being mixed with semicoke enters semicoke processing
It after chamber, is moved upwards via tower tray through-hole, semicoke is contacted with the moisture film on tower tray, and semicoke is intercepted by moisture film and with the work of flowing
Industry fresh water is fallen after rise to slurrying agitator tank, carries out slurrying, and half coke utilization is improved to 99%, avoids semicoke caused by emptying
Waste, reduces semicoke slurrying cost；Meanwhile semicoke is intercepted and is flowed back by moisture film, reduce equipment damaged because of blocking it is several
Rate, it is ensured that the operation that pulping system can be continual and steady has ensured going on smoothly for coal water slurry gasification process；3, below evacuated tube
Equipped with demister, it is ensured that pneumatic conveying compressed gas passes through the bubble generated when tower tray moisture film and enters emptying system, damage emptying system
System.
Detailed description of the invention:
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is prior art systems structural schematic diagram.
Fig. 2 is the overall structure diagram of embodiment 1.
Fig. 3 is the tray structure schematic diagram of embodiment 1.
Slurrying agitator tank 1, venturi mixer 2, slurrying blender 3, slurrying rotary electric machine 4, semicoke processing chamber 5, emptying
Pipe 6, tower tray 7, through-hole 8, downspout 9, fresh pipe network 11, reverse stream pipe 12, demister 13, semicoke delivery pipe 14, compressed air
Source 15, compressed air hose 16, half coke bin 17, semicoke screw conveyor 18, semicoke grinding machine 19, rotatory feeder valve 20, fresh water pump
21, refluxing opening 22, semicoke stock pump 23, tank 24 of sizing mixing, coal water slurry gasification feed conduit 25, recycle control valve 26, air-introduced machine 27, mistake
Filter 28, blender 29 of sizing mixing, rotary electric machine 30 of sizing mixing, delivery control valve 31.
Specific embodiment:
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1:
As Figure 2-3, hydrogasification semicoke pulping device comprising slurrying agitator tank 1, the charging of slurrying agitator tank 1
It is equipped with venturi mixer 2 at mouthful, slurrying blender 3 is equipped in slurrying agitator tank 1, is worn at the top of the rotation axis of slurrying blender 3
It crosses 1 top of slurrying agitator tank to be fixedly connected with the output shaft of slurrying rotary electric machine 4, the top of slurrying agitator tank 1 is equipped at semicoke
Chamber 5 is managed, the inside of semicoke processing chamber 5 is connected to the inside of slurrying agitator tank 1, the bottom of semicoke processing chamber 5 and slurrying agitator tank 1
Top connection, the top of semicoke processing chamber 5 is equipped with evacuated tube 6；At least two major arc arch are staggeredly equipped in semicoke processing chamber 5
Tower tray 7, in the present embodiment, 7 quantity of tower tray is 4, and tower tray 7 is horizontally disposed；The chord length frontier juncture of tower tray 7 is in semicoke processing chamber
5 vertical centerline is symmetrical, and the arc-shaped edges of tower tray 7 are fixedly connected with the inner sidewall of semicoke processing chamber 5, is evenly equipped on tower tray 7 logical
Hole 8, is equipped with downspout 9 between adjacent two layers of tower tray 7, in the inlet side and upper layer tower tray 7 and semicoke processing chamber 5 of downspout 9
The gap connection formed between wall, the import of downspout 9 are placed in the top of upper layer tower tray 7, the bottom of downspout 9 and lower layer's tower tray
7 connections, the outlet of downspout 9 is placed in the top of lower layer's tower tray 7；The semicoke processing chamber 5 of 7 top of top layer's tower tray and fresh water pipe
Net 11 is connected by reverse stream pipe 12；Be equipped with demister 13 in the semicoke processing chamber 5 of the lower section of evacuated tube 6, the edge of demister 13 with
The inner sidewall of semicoke processing chamber 5 is fixedly connected.
An import and the outlet of Pneumatic conveyer for venturi mixer 2 connects, and Pneumatic conveyer includes semicoke
Delivery pipe 14 and compressed air source 15 are connected between semicoke delivery pipe 14 and compressed air source 15 by compressed air hose 16, are pressed
The pressure of contracting air-source 15 is 0.5-0.7MPa, and in the present embodiment, the pressure of compressed air source 15 is 0.6MPa；Half coke bin 17
Import connect with the outlet of semicoke screw conveyor 18, the qualified product of the import of semicoke screw conveyor 18 and semicoke grinding machine 19
Outlet connection, is connected between the import of semicoke delivery pipe 14 and half coke bin 17 by rotatory feeder valve 20.Venturi mixer 2
It is connected between another import and fresh pipe network 11 by fresh water pump 21, the outlet of venturi mixer 2 is placed in slurrying and stirs
The inside for mixing tank 1 is placed in below the liquid level of slurrying agitator tank 1, and the outlet of slurrying agitator tank 1 passes through semicoke stock pump 23 and sizes mixing
The import of tank 24 connects, and the volume ratio of size mixing tank 24 and slurrying agitator tank 1 is more than or equal to 2:1, in the present embodiment, tank 24 of sizing mixing
Volume ratio with slurrying agitator tank 1 is 2:1；Tank 24 of sizing mixing is interior to be equipped with blender 29 of sizing mixing, the rotation axis top for blender 29 of sizing mixing
Portion passes through 24 top of tank of sizing mixing and is fixedly connected with the output shaft for rotary electric machine 30 of sizing mixing, and the outlet of slurrying agitator tank 1 passes through semicoke
Stock pump 23 is connect with the import for tank 24 of sizing mixing, tank 24 of sizing mixing outlet respectively with the refluxing opening 22 of slurrying agitator tank 1, water-coal-slurry gas
Change the import connection of feed conduit 25；Size mixing tank 24 the pipeline being exported between refluxing opening 22 be equipped with recycle control valve 26,
Coal water slurry gasification feed conduit 25 is equipped with delivery control valve 31.
Embodiment 2:
Utilize the method for the hydrogasification semicoke slurrying that embodiment 1 carries out comprising start-up and stable operation stage,
Wherein:
1) start-up: being added the industrial fresh water of its volume 60% into slurrying agitator tank 1, semicoke through pneumatic conveying extremely
It is mixed in venturi mixer 2 with the industrial fresh water being delivered in venturi mixer 2, the pressure of pneumatic conveying is
0.5MPa, 1 operating pressure of slurrying agitator tank are 0.1MPa, the semicoke through pneumatic conveying and the work being passed through in venturi mixer 2
The mass ratio of industry fresh water is 5:5, obtains pre- slurrying；Pre- slurrying, which enters in slurrying agitator tank 1, to be stirred, and mixing speed is
30r/min；During stirring, it is passed through industrial fresh water into semicoke processing chamber 5, the semicoke through pneumatic conveying and is passed through half
The mass ratio of industrial fresh water in burnt processing chamber 5 is 5:3；Industrial fresh water is flowed along 7 upper surface of tower tray, on tower tray 7
Surface forms water membrane, and part does not mix the semicoke being slurried with pneumatic conveying with the industrial fresh water in slurrying agitator tank 1
Compressed gas enter in semicoke processing chamber 5, semicoke is moved upwards via the through-hole 8 of tower tray 7 and is contacted with the moisture film on tower tray 7, half
Coke is intercepted by moisture film and as the industrial fresh water of flowing is fallen after rise to slurrying agitator tank 1, stirs to get semicoke slurry, pneumatic transporting
The compressed gas sent is discharged after foam removal is handled by the top of semicoke processing chamber；Semicoke slurry is pumped into tank 24 of sizing mixing by semicoke stock pump 23
Interior, the semicoke slurry a part sized mixing in tank 24 is back in slurrying agitator tank 1 to maintain the liquid level in slurrying agitator tank 1 as slurrying
The 60% of 1 volume of agitator tank, remaining semicoke slurry, which is stored in, sizes mixing in tank 24, until the concentration that the semicoke for tank 24 of sizing mixing is starched is 30%；
2) when the concentration that the semicoke for tank 24 of sizing mixing is starched is 30%, venturi mixer 2 will stable operation stage: be delivered to
Semicoke and the mass ratio of fresh process water be adjusted to 1:0.8, the semicoke through pneumatic conveying and the work being passed through in semicoke processing chamber 5
The mass ratio of industry fresh water is adjusted to 1:0.8, and obtained semicoke slurry is delivered in tank 24 of sizing mixing and is stirred, and obtains concentration and is
30% qualified semicoke slurry, qualified semicoke slurry a part are back in slurrying agitator tank 1 to maintain the liquid level in slurrying agitator tank 1
It is the 60% of 1 volume of slurrying agitator tank, remaining qualified semicoke slurry is delivered to water-coal-slurry gas by coal water slurry gasification feed conduit 25
Change system；
In 2) stable operation stage, when the semicoke slurry concentration in tank 24 of sizing mixing is higher than 35%, stop to water-coal-slurry gas
Change system conveys semicoke slurry, and is adjusted by the following method: first improving the industrial fresh water being passed through into slurrying agitator tank 1
Flow, then the flow for the industrial fresh water being passed through into semicoke processing chamber 5 is improved, in above process, if sizing mixing in tank 24
Semicoke slurry concentration be equal to qualified semicoke slurry, then restore semicoke through pneumatic conveying and the work that is passed through in venturi mixer 2
The mass ratio of industry fresh water is 1:0.8, the quality of semicoke and the industrial fresh water being passed through in semicoke processing chamber 5 through pneumatic conveying
Than for 1:0.8；In above process, the mass ratio of the semicoke through pneumatic conveying and the industrial fresh water being passed through in semicoke processing chamber
Highest can be improved to 5:9, and the quality of the semicoke through pneumatic conveying and the industrial fresh water being passed through in slurrying agitator tank 1 can than highest
It improves to 5:9；When improving to the semicoke slurry concentration sized mixing in tank 24 to 30-35%, restore to convey half to coal water slurry gasification system
Coke slurry.
In 2) stable operation stage, when the semicoke slurry concentration in tank 24 of sizing mixing is lower than 30%, stop to water-coal-slurry gas
Change system conveys semicoke slurry, and is adjusted by the following method: first reducing the industrial fresh water being passed through into semicoke processing chamber 5
Flow, then the flow for the industrial fresh water being passed through into slurrying agitator tank 1 is reduced, in above process, if sizing mixing in tank 24
Semicoke slurry concentration be equal to qualified semicoke slurry, then restore semicoke through pneumatic conveying and the work that is passed through in venturi mixer 2
The mass ratio of industry fresh water is 1:0.8, the quality of semicoke and the industrial fresh water being passed through in semicoke processing chamber 5 through pneumatic conveying
Than for 1:0.8；In the above process, the mass ratio of semicoke and the industrial fresh water being passed through in semicoke processing chamber 5 through pneumatic conveying
Minimum to be reduced to 5:3, the mass ratio of semicoke and the industrial fresh water being passed through in slurrying agitator tank 1 through pneumatic conveying is minimum can
It is reduced to 5:5；When being reduced to 30-35% to the semicoke slurry concentration sized mixing in tank 24, restore to convey half to coal water slurry gasification system
Coke slurry.
With the present embodiment compared with conventional semicoke pulping process, conventional semicoke pulping process is carried out using system shown in Figure 1,
Specifically: it is 30r/min that the mass ratio of the stirring of semicoke processing industry fresh water, semicoke and industrial fresh water, which is 1:0.8 mixing speed,；
The present embodiment is test group, and conventional semicoke pulping process is control group, and semicoke used is the half of homogeneity same amount before two groups of slurrying
Coke is obtained by the grinding, Screening Treatment of the same terms, and two groups carry out slurrying, double of coke utilization, equipment to semicoke simultaneously
Service life is recorded, and record result is as follows:
1 two group of half coke utilization of table and life of equipment record
| Project | Control group | Test group |
| Half coke utilization (%) | 80 | 99 |
| System service life (d) | 60 | 330 |
As shown in Table 1, compared with conventional semicoke pulping process, semicoke is delivered to literary mound by pneumatic conveying by this implementation
In mixed with industrial fresh water in mixer 2, semicoke is sufficiently drenched in advance, the semicoke drenched is then delivered to slurrying and is stirred
In tank 1, semicoke is directly entered below slurrying agitator tank 1 liquid level, and the industrial fresh water stirring pulping in slurrying agitator tank 1, really
Semicoke is mixed into industrial fresh water by guarantor to the greatest extent, improves half coke utilization, improves effects on slurry making；Secondly as half
Coke is entered in slurrying agitator tank 1 through pneumatic conveying, into slurrying agitator tank 1 in but be not mixed into industrial fresh water semicoke will
As pneumatic conveying compressed gas is moved to semicoke processing chamber 5, the industrial fresh water of 7 upper surface of the tower tray flowing of semicoke processing chamber 5
Formed moisture film, be mixed with semicoke compressed gas enter semicoke processing chamber 5 after, moved upwards from bottom to top via 7 through-hole 8 of tower tray,
Semicoke is contacted with the moisture film of 7 upper surface of tower tray, and semicoke is intercepted and stirred as the industrial fresh water of flowing is fallen after rise to slurrying by moisture film
It mixes in tank 1, carries out slurrying, half coke utilization improves to 99%, avoids semicoke caused by emptying from wasting, reduce equipment because of blocking
And the probability damaged, it is ensured that the operation that pulping system can be continual and steady has ensured going on smoothly for coal water slurry gasification process.
Embodiment 3:
Utilize the method for the hydrogasification semicoke slurrying that embodiment 1 carries out comprising start-up and stable operation stage,
Wherein:
1) start-up: being added the industrial fresh water of its volume 70% into slurrying agitator tank 1, semicoke through pneumatic conveying extremely
It is mixed in venturi mixer 2 with the industrial fresh water being delivered in venturi mixer 2, the pressure of pneumatic conveying is
0.6MPa, 1 operating pressure of slurrying agitator tank are 0.15MPa, the semicoke through pneumatic conveying and the work being passed through in venturi mixer 2
The mass ratio of industry fresh water is 7:5, obtains pre- slurrying；Pre- slurrying, which enters in slurrying agitator tank 1, to be stirred, and mixing speed is
40r/min；During stirring, it is passed through industrial fresh water into semicoke processing chamber 5, the semicoke through pneumatic conveying and is passed through half
The mass ratio of industrial fresh water in burnt processing chamber 5 is 7:3；Industrial fresh water is flowed along 7 upper surface of tower tray, on tower tray 7
Surface forms water membrane, and part does not mix the semicoke being slurried with pneumatic conveying with the industrial fresh water in slurrying agitator tank 1
Compressed gas enter in semicoke processing chamber 5, semicoke is moved upwards via the through-hole 8 of tower tray 7 and is contacted with the moisture film on tower tray 7, half
Coke is intercepted by moisture film and as the industrial fresh water of flowing is fallen after rise to slurrying agitator tank 1, stirs to get semicoke slurry, pneumatic transporting
The compressed gas sent is discharged after foam removal is handled by the top of semicoke processing chamber；Semicoke slurry is pumped into tank 24 of sizing mixing by semicoke stock pump 23
Interior, the semicoke slurry a part sized mixing in tank 24 is back in slurrying agitator tank 1 to maintain the liquid level in slurrying agitator tank 1 as slurrying
The 70% of 1 volume of agitator tank, remaining semicoke slurry, which is stored in, sizes mixing in tank 24, until the concentration that the semicoke for tank 24 of sizing mixing is starched is 33%；
2) when the concentration that the semicoke for tank 24 of sizing mixing is starched is 33%, venturi mixer 2 will stable operation stage: be delivered to
Semicoke and the mass ratio of fresh process water be adjusted to 1:1, the semicoke through pneumatic conveying and the industry being passed through in semicoke processing chamber 5
The mass ratio of fresh water is adjusted to 1:1, and obtained semicoke slurry is delivered in tank 24 of sizing mixing and is stirred, and obtains concentration and is
The qualified semicoke of 30%-35% is starched, and qualified semicoke is starched a part and is back in slurrying agitator tank 1 to maintain in slurrying agitator tank 1
Liquid level be the 70% of 1 volume of slurrying agitator tank, remaining qualified semicoke slurry is delivered to water by coal water slurry gasification feed conduit 25
Coal slurry gasification system；
In 2) stable operation stage, when the semicoke slurry concentration in tank 24 of sizing mixing is higher than 35%, stop to water-coal-slurry gas
Change system conveys semicoke slurry, and is adjusted by the following method: first improving the industrial fresh water being passed through into slurrying agitator tank 1
Flow, then the flow for the industrial fresh water being passed through into semicoke processing chamber 5 is improved, in above process, if sizing mixing in tank 24
Semicoke slurry concentration be equal to qualified semicoke slurry, then restore semicoke through pneumatic conveying and the work that is passed through in venturi mixer 2
The mass ratio of industry fresh water is 1:1, the mass ratio of semicoke and the industrial fresh water being passed through in semicoke processing chamber 5 through pneumatic conveying
For 1:1；In above process, the quality of the semicoke through pneumatic conveying and the industrial fresh water being passed through in semicoke processing chamber compares highest
It can be improved to 7:9, the quality of the semicoke through pneumatic conveying and the industrial fresh water being passed through in slurrying agitator tank 1 can be improved than highest
To 7:9；When improving to the semicoke slurry concentration sized mixing in tank 24 to 30-35%, restore to convey semicoke slurry to coal water slurry gasification system.
In 2) stable operation stage, when the semicoke slurry concentration in tank 24 of sizing mixing is lower than 30%, stop to water-coal-slurry gas
Change system conveys semicoke slurry, and is adjusted by the following method: first reducing the industrial fresh water being passed through into semicoke processing chamber 5
Flow, then the flow for the industrial fresh water being passed through into slurrying agitator tank 1 is reduced, in above process, if sizing mixing in tank 24
Semicoke slurry concentration be equal to qualified semicoke slurry, then restore semicoke through pneumatic conveying and the work that is passed through in venturi mixer 2
The mass ratio of industry fresh water is 1:1, the mass ratio of semicoke and the industrial fresh water being passed through in semicoke processing chamber 5 through pneumatic conveying
For 1:1；In the above process, the mass ratio of semicoke and the industrial fresh water being passed through in semicoke processing chamber 5 through pneumatic conveying is minimum
It can be reduced to 7:3, the mass ratio of the semicoke through pneumatic conveying and the industrial fresh water being passed through in slurrying agitator tank 1 is minimum to be reduced
To 7:5；When being reduced to 33% to the semicoke slurry concentration sized mixing in tank 24, restore to convey semicoke slurry to coal water slurry gasification system.
With the present embodiment compared with conventional semicoke pulping process, conventional semicoke pulping process is carried out using system shown in Figure 1,
Specifically: the mass ratio of the stirring of semicoke processing industry fresh water, semicoke and industrial fresh water is 1:0.9, mixing speed 40r/
min；The present embodiment is test group, and conventional semicoke pulping process is control group, and semicoke used is homogeneity same amount before two groups of slurrying
Semicoke obtained by the grinding, Screening Treatment of the same terms, two groups carry out slurrying to semicoke simultaneously, double of coke utilization,
Life of equipment is recorded, and record result is as follows:
2 two group of half coke utilization of table and life of equipment record
| Project | Control group | Test group |
| Half coke utilization (%) | 80 | 99 |
| System service life (d) | 60 | 330 |
As shown in Table 2, compared with conventional semicoke pulping process, semicoke is delivered to literary mound by pneumatic conveying by this implementation
In mixed with industrial fresh water in mixer 2, semicoke is sufficiently drenched in advance, the semicoke drenched is then delivered to slurrying and is stirred
In tank 1, semicoke is directly entered below slurrying agitator tank 1 liquid level, and the industrial fresh water stirring pulping in slurrying agitator tank 1, really
Semicoke is mixed into industrial fresh water by guarantor to the greatest extent, improves half coke utilization, improves effects on slurry making；Secondly as half
Coke is entered in slurrying agitator tank 1 through pneumatic conveying, into slurrying agitator tank 1 in but be not mixed into industrial fresh water semicoke will
As pneumatic conveying compressed gas is moved to semicoke processing chamber 5, the industrial fresh water of 7 upper surface of the tower tray flowing of semicoke processing chamber 5
Formed moisture film, be mixed with semicoke compressed gas enter semicoke processing chamber 5 after, moved upwards from bottom to top via 7 through-hole 8 of tower tray,
Semicoke is contacted with the moisture film of 7 upper surface of tower tray, and semicoke is intercepted and stirred as the industrial fresh water of flowing is fallen after rise to slurrying by moisture film
It mixes in tank 1, carries out slurrying, half coke utilization improves to 99%, avoids semicoke caused by emptying from wasting, reduce equipment because of blocking
And the probability damaged, it is ensured that the operation that pulping system can be continual and steady has ensured going on smoothly for coal water slurry gasification process.
Embodiment 4:
Utilize the method for the hydrogasification semicoke slurrying that embodiment 1 carries out comprising start-up and stable operation stage,
Wherein:
1) start-up: being added the industrial fresh water of its volume 80% into slurrying agitator tank 1, semicoke through pneumatic conveying extremely
It is mixed in venturi mixer 2 with the industrial fresh water being delivered in venturi mixer 2, the pressure of pneumatic conveying is
0.7MPa, 1 operating pressure of slurrying agitator tank are 0.2MPa, the semicoke through pneumatic conveying and the work being passed through in venturi mixer 2
The mass ratio of industry fresh water is 8:5, obtains pre- slurrying；Pre- slurrying, which enters in slurrying agitator tank 1, to be stirred, and mixing speed is
50r/min；During stirring, it is passed through industrial fresh water into semicoke processing chamber 5, the semicoke through pneumatic conveying and is passed through half
The mass ratio of industrial fresh water in burnt processing chamber 5 is 8:3；Industrial fresh water is flowed along 7 upper surface of tower tray, on tower tray 7
Surface forms water membrane, and part does not mix the semicoke being slurried with pneumatic conveying with the industrial fresh water in slurrying agitator tank 1
Compressed gas enter in semicoke processing chamber 5, semicoke is moved upwards via the through-hole 8 of tower tray 7 and is contacted with the moisture film on tower tray 7, half
Coke is intercepted by moisture film and as the industrial fresh water of flowing is fallen after rise to slurrying agitator tank 1, stirs to get semicoke slurry, pneumatic transporting
The compressed gas sent is discharged after foam removal is handled by the top of semicoke processing chamber；Semicoke slurry is pumped into tank 24 of sizing mixing by semicoke stock pump 23
Interior, the semicoke slurry a part sized mixing in tank 24 is back in slurrying agitator tank 1 to maintain the liquid level in slurrying agitator tank 1 as slurrying
The 80% of 1 volume of agitator tank, remaining semicoke slurry, which is stored in, sizes mixing in tank 24, until the concentration that the semicoke for tank 24 of sizing mixing is starched is 35%；
2) when the concentration that the semicoke for tank 24 of sizing mixing is starched is 35%, venturi mixer 2 will stable operation stage: be delivered to
Semicoke and the mass ratio of fresh process water be adjusted to 1:1.2, the semicoke through pneumatic conveying and the work being passed through in semicoke processing chamber 5
The mass ratio of industry fresh water is adjusted to 1:1.2, and obtained semicoke slurry is delivered in tank 24 of sizing mixing and is stirred, and obtains concentration and is
35% qualified semicoke slurry, qualified semicoke slurry a part are back in slurrying agitator tank 1 to maintain the liquid level in slurrying agitator tank 1
It is the 80% of 1 volume of slurrying agitator tank, remaining qualified semicoke slurry is delivered to water-coal-slurry gas by coal water slurry gasification feed conduit 25
Change system；
In 2) stable operation stage, when the semicoke slurry concentration in tank 24 of sizing mixing is higher than 35%, stop to water-coal-slurry gas
Change system conveys semicoke slurry, and is adjusted by the following method: first improving the industrial fresh water being passed through into slurrying agitator tank 1
Flow, then the flow for the industrial fresh water being passed through into semicoke processing chamber 5 is improved, in above process, if sizing mixing in tank 24
Semicoke slurry concentration be equal to qualified semicoke slurry, then restore semicoke through pneumatic conveying and the work that is passed through in venturi mixer 2
The mass ratio of industry fresh water is 1:1.2, the quality of semicoke and the industrial fresh water being passed through in semicoke processing chamber 5 through pneumatic conveying
Than for 1:1.2；In above process, the mass ratio of the semicoke through pneumatic conveying and the industrial fresh water being passed through in semicoke processing chamber
Highest can be improved to 8:9, and the quality of the semicoke through pneumatic conveying and the industrial fresh water being passed through in slurrying agitator tank 1 can than highest
It improves to 8:9；When improving to the semicoke slurry concentration sized mixing in tank 24 to 30-35%, restore to convey half to coal water slurry gasification system
Coke slurry.
In 2) stable operation stage, when the semicoke slurry concentration in tank 24 of sizing mixing is lower than 30%, stop to water-coal-slurry gas
Change system conveys semicoke slurry, and is adjusted by the following method: first reducing the industrial fresh water being passed through into semicoke processing chamber 5
Flow, then the flow for the industrial fresh water being passed through into slurrying agitator tank 1 is reduced, in above process, if sizing mixing in tank 24
Semicoke slurry concentration be equal to qualified semicoke slurry, then restore semicoke through pneumatic conveying and the work that is passed through in venturi mixer 2
The mass ratio of industry fresh water is 1:1.2, the quality of semicoke and the industrial fresh water being passed through in semicoke processing chamber 5 through pneumatic conveying
Than for 1:1.2；In the above process, the mass ratio of semicoke and the industrial fresh water being passed through in semicoke processing chamber 5 through pneumatic conveying
Minimum to be reduced to 8:3, the mass ratio of semicoke and the industrial fresh water being passed through in slurrying agitator tank 1 through pneumatic conveying is minimum can
It is reduced to 8:5；When being reduced to 35% to the semicoke slurry concentration sized mixing in tank 24, restore to convey semicoke to coal water slurry gasification system
Slurry.
With the present embodiment compared with conventional semicoke pulping process, conventional semicoke pulping process is carried out using system shown in Figure 1,
Specifically: the mass ratio of the stirring of semicoke processing industry fresh water, semicoke and industrial fresh water is 1:1.2, mixing speed 50r/
min；The present embodiment is test group, and conventional semicoke pulping process is control group, and semicoke used is homogeneity same amount before two groups of slurrying
Semicoke obtain semicoke by the grinding, Screening Treatment of the same terms, two groups carry out slurrying to semicoke simultaneously, and double of Jiao Li uses
Rate, life of equipment are recorded, and record result is as follows:
3 two group of half coke utilization of table and life of equipment record
| Project | Control group | Test group |
| Half coke utilization (%) | 80 | 99 |
| System service life (d) | 60 | 330 |
As shown in Table 3, compared with conventional semicoke pulping process, semicoke is delivered to literary mound by pneumatic conveying by this implementation
In mixed with industrial fresh water in mixer 2, semicoke is sufficiently drenched in advance, the semicoke drenched is then delivered to slurrying and is stirred
In tank 1, semicoke is directly entered below slurrying agitator tank 1 liquid level, and the industrial fresh water stirring pulping in slurrying agitator tank 1, really
Semicoke is mixed into industrial fresh water by guarantor to the greatest extent, improves half coke utilization, improves effects on slurry making；Secondly as half
Coke is entered in slurrying agitator tank 1 through pneumatic conveying, into slurrying agitator tank 1 in but be not mixed into industrial fresh water semicoke will
As pneumatic conveying compressed gas is moved to semicoke processing chamber 5, the industrial fresh water of 7 upper surface of the tower tray flowing of semicoke processing chamber 5
Formed moisture film, be mixed with semicoke compressed gas enter semicoke processing chamber 5 after, moved upwards from bottom to top via 7 through-hole 8 of tower tray,
Semicoke is contacted with the moisture film of 7 upper surface of tower tray, and semicoke is intercepted and stirred as the industrial fresh water of flowing is fallen after rise to slurrying by moisture film
It mixes in tank 1, carries out slurrying, half coke utilization improves to 99%, avoids semicoke caused by emptying from wasting, reduce equipment because of blocking
And the probability damaged, it is ensured that the operation that pulping system can be continual and steady has ensured going on smoothly for coal water slurry gasification process.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (5)
1. hydrogasification semicoke pulping process, which is characterized in that it includes start-up and stable operation stage, in which:
1) start-up: the industrial fresh water of its volume 60-80% is added into slurrying agitator tank, semicoke is through pneumatic conveying to text
It is mixed in mixer with the industrial fresh water being delivered in the venturi mixer in mound, half through the pneumatic conveying
The burnt mass ratio with the industrial fresh water being passed through in the venturi mixer is 5-8:5, obtains pre- slurrying；The pre- slurrying into
Enter and be stirred in slurrying agitator tank, during stirring, industrial fresh water is passed through into semicoke processing chamber, through the strength
The mass ratio of the semicoke of conveying and the industrial fresh water being passed through in the semicoke processing chamber is 5-8:3；Industrial fresh water is along tower
The flowing of disk upper surface forms water membrane in the tower tray upper surface, and part is not fresh with the industry in the slurrying agitator tank
The semicoke that water mixing is slurried enters in the semicoke processing chamber with the compressed gas of pneumatic conveying, and semicoke is via the logical of the tower tray
Hole is moved upwards to be contacted with the moisture film on the tower tray, and semicoke is intercepted by moisture film and as the industrial fresh water of flowing is fallen after rise to system
It starches in agitator tank, stirs to get semicoke slurry, the compressed gas of pneumatic conveying is discharged by the top of the semicoke processing chamber；Described half
Burnt slurry is pumped by semicoke stock pump and is sized mixing in tank, and the semicoke sized mixing in tank starches a part and is back to the slurrying stirring
60-80% in tank to maintain the liquid level in the slurrying agitator tank as slurrying stirring tank volume, remaining described semicoke slurry
It sizes mixing in tank described in being stored in, until the concentration of the semicoke slurry of the tank of sizing mixing is 30%-35%；
2) when the concentration that the semicoke of the tank of sizing mixing is starched is 30%-35%, the venturi will stable operation stage: be delivered to
The semicoke of mixer and the mass ratio of fresh process water are adjusted to 1:0.8-1.2, the semicoke through the pneumatic conveying and are passed through institute
The mass ratio for stating the industrial fresh water in semicoke processing chamber is adjusted to 1:0.8-1.2, and obtained semicoke slurry is delivered to the tune
Be stirred in slurry tank, obtain the qualified semicoke that concentration is 30%-35% and starch, the qualification semicoke starch a part be back to it is described
60-80% in slurrying agitator tank to maintain the liquid level in the slurrying agitator tank as slurrying stirring tank volume, remaining institute
It states qualified semicoke slurry and is delivered to coal water slurry gasification system.
2. hydrogasification semicoke pulping process according to claim 1, which is characterized in that in the 1) start-up and institute
It states in 2) stable operation stage, the pressure of the pneumatic conveying is 0.5-0.7MPa, and the slurrying agitator tank operating pressure is
0.1-0.2MPa, the mixing speed of the slurrying agitator tank are 30-50r/min.
3. according to claim 1 or 2 any hydrogasification semicoke pulping process, which is characterized in that 1) drive described
In stage and the 2) stable operation stage, into the compressed gas in the semicoke processing chamber after foam removal is handled, by institute
State the evacuated tube discharge at the top of semicoke processing chamber.
4. hydrogasification semicoke pulping process according to claim 3, which is characterized in that in the 2) stable operation stage
In, when the semicoke slurry concentration sized mixing in tank is higher than 35%, stop conveying semicoke slurry to the coal water slurry gasification system, and
Be adjusted by the following method: first improving the flow for the industrial fresh water being passed through into the slurrying agitator tank, then improve to
The flow for the industrial fresh water being passed through in the semicoke processing chamber, in above process, if the semicoke sized mixing in tank
Slurry concentration is equal to the qualified semicoke slurry, then restores the semicoke through the pneumatic conveying and be passed through in the venturi mixer
The mass ratio of industrial fresh water be 1:0.8-1.2, semicoke through the pneumatic conveying and be passed through in the semicoke processing chamber
The mass ratio of industrial fresh water is 1:0.8-1.2；In above process, semicoke through the pneumatic conveying and it is passed through the semicoke
The quality of industrial fresh water in processing chamber can be improved than highest to 5-8:9, the semicoke through the pneumatic conveying and be passed through described
The quality of industrial fresh water in slurrying agitator tank can be improved than highest to 5-8:9；To the semicoke slurry concentration sized mixing in tank
When improving to 30-35%, restore to convey semicoke slurry to the coal water slurry gasification system.
5. hydrogasification semicoke pulping process according to claim 3, which is characterized in that in the 2) stable operation stage
In, when the semicoke slurry concentration sized mixing in tank is lower than 30%, stop conveying semicoke slurry to the coal water slurry gasification system, and
Be adjusted by the following method: first reducing the flow for the industrial fresh water being passed through into the semicoke processing chamber, then reduce to
The flow for the industrial fresh water being passed through in the slurrying agitator tank, in above process, if the semicoke sized mixing in tank
Slurry concentration is equal to the qualified semicoke slurry, then restores the semicoke through the pneumatic conveying and be passed through in the venturi mixer
The mass ratio of industrial fresh water be 1:0.8-1.2, semicoke through the pneumatic conveying and be passed through in the semicoke processing chamber
The mass ratio of industrial fresh water is 1:0.8-1.2；In the above process, semicoke through the pneumatic conveying and it is passed through at the semicoke
Manage intracavitary industrial fresh water mass ratio it is minimum be reduced to 5-8:3, the semicoke through the pneumatic conveying and be passed through the system
The mass ratio of industrial fresh water in slurry agitator tank is minimum to be reduced to 5-8:5；To the semicoke slurry concentration drop sized mixing in tank
When down to 30-35%, restore to convey semicoke slurry to the coal water slurry gasification system.
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| CN110354741A (en) * | 2018-10-09 | 2019-10-22 | 新能能源有限公司 | Hydrogasification semicoke pulping device and its stable operation method |
| CN114746529A (en) * | 2019-07-31 | 2022-07-12 | 赛格英国科技有限公司 | Method and equipment for dry processing hot coal and coke |
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| CN110055116B (en) | 2021-02-19 |
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