CN106987290A - A kind of method for improving pipeline transportation water-coal-slurry end product concentration - Google Patents
A kind of method for improving pipeline transportation water-coal-slurry end product concentration Download PDFInfo
- Publication number
- CN106987290A CN106987290A CN201710407184.7A CN201710407184A CN106987290A CN 106987290 A CN106987290 A CN 106987290A CN 201710407184 A CN201710407184 A CN 201710407184A CN 106987290 A CN106987290 A CN 106987290A
- Authority
- CN
- China
- Prior art keywords
- slurry
- coal
- concentration
- additive
- coal slurry
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- 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
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/146—Macromolecular compounds according to different macromolecular groups, mixtures thereof
-
- 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
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/24—Organic compounds containing sulfur, selenium and/or tellurium
- C10L1/2462—Organic compounds containing sulfur, selenium and/or tellurium macromolecular compounds
-
- 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
- C10L2300/00—Mixture of two or more additives covered by the same group of C10L1/00 - C10L1/308
- C10L2300/30—Mixture of three components
-
- 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
- C10L2300/00—Mixture of two or more additives covered by the same group of C10L1/00 - C10L1/308
- C10L2300/40—Mixture of four or more components
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Liquid Carbonaceous Fuels (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention provides a kind of method for improving pipeline transportation water-coal-slurry end product concentration, it the described method comprises the following steps：(1) section of tubing transport coal slurry is mixed into progress fine grinding with water and additive, obtains the first slurry；(2) section of tubing is transported after coal slurry, the slurry of part first, water and additive are mixed and carries out Ultrafine Grinding, obtain the second slurry；(3) remaining first slurry and the second slurry are mixed to get the 3rd slurry；(4) raw coal is mixed with remaining pipeline transportation coal slurry, the slurry of part the 3rd, water and additive, the 4th slurry is obtained after carrying out wet milling；(5) the 4th slurry is mixed with remaining 3rd slurry, finished product coal slurry is obtained after screening removal of impurities.The method of the invention can optimize coal slurry grain size distribution, concentration is at least lifted 8~20 percentage points compared with pipeline end product, and coal slurry mobility, stability and atomization are greatly improved.
Description
Technical field
The invention belongs to water-coal-slurry preparing technical field, it is related to a kind of raising pipeline transportation water-coal-slurry end product concentration
Method, more particularly to a kind of method for improving long-distance pipe transport water-coal-slurry end product concentration.
Background technology
Coal slurry pipeline conveying can be conveyed as another important coal resources in addition to the conveying of railway, highway and water route
Mode, with investing, relatively low, effect on environment is small, climate influence is small and conveys low cost and other advantages, is a kind of safety
Efficiently, advanced technology, energy and land saving and environmental clean Ways of coal haulage.Influenceed by rheological characteristic and stability, conventional pipeline is defeated
The concentration of slurry of delivering coal is generally below 55%, and grain size distribution is unreasonable.During cool water mixture burning and gasification, water-coal-slurry is improved
Concentration will significantly improve the burning of coal slurry and gasification efficiency, when coal-water fluid concentration be less than 60% when, be unfavorable for being burnt or
Gasification reaction；Cool water mixture burning and gasification require that coal-water fluid concentration is 60%~75%, so needing whole to the defeated coal slurry of low concentration pipe
End product quality is lifted.
CN 105194912A disclose a kind of long range coal chute road terminal coal slurry upgrading system device and method, described
Device includes pipeline heater, coal chute road, screen bowl centrifuge, slurry can, thickener and sewage treatment plant.Coal chute
Coal slurry in road is after pipeline heater is heated, and into screen bowl centrifuge dehydration, product is transported to slurry can after dehydration,
The filtrate of screen bowl centrifuge enters sedimentation centrifugate bucket, and thickener concentration is delivered to by pump, and thickener underflow is defeated by pump
The coal slurry delivered in agitator, agitator is delivered to slurry can after stirring by pump, thickener overflow by pipeline extremely
Sewage treatment plant.High concentration coal slurry in slurry can directly feed coal chemical industry user and use.Methods described high energy consumption, flow phase
To complexity, and coal slurry grain size distribution optimization is unreasonable, causes product coal-water fluid concentration relatively low.
CN 105312003A disclose a kind of long-distance pipe terminal coal slurry dehydration and combine pulping device with fine grinding, described
Device includes middle concentration coal slurry tank, Sedimentation centrifugel, drag conveyor, mixing and stirring tank, thickener, atomizer mill, sewage
Treatment plant, coal slurry membrane pump and high concentration coal slurry tank.Defeated coal slurry is managed in middle concentration coal slurry tank over long distances to centrifuge by sedimentation filtration
After machine dehydration, product is transported in mixing and stirring tank by drag conveyor, and filtrate enters sedimentation centrifugate bucket and is delivered to concentration
Machine is concentrated, and thickener underflow, which is delivered to, enters mixing and stirring tank after further fine grinding in atomizer mill, thickener overflow is defeated by pipeline
Deliver to product and thickener underflow after sewage treatment plant, dehydration formed after mixing and stirring tank is mixed chemical industry coal slurry into
Product, are delivered to by coal slurry membrane pump and coal chemical industry user is stored and supplied in high concentration coal slurry tank directly use.This method high energy consumption,
The relative complex point of flow, although coal slurry particle size fraction is furnished with certain effect of optimization, but coal-water fluid concentration increase rate is little.
It can be seen that, in the prior art for pipe water delivery coal slurry end product concentration lifted mode energy consumption is larger and efficiency compared with
Low, not enough to the optimization of coal slurry size distribution, coarse granule is more in coal slurry causes the increase of oxygen consumption and reacts incomplete.
The content of the invention
It is larger and less efficient for there is energy consumption in the prior art, coal slurry size distribution is optimized thick in deficiency, coal slurry
Particle is more to cause the problems such as oxygen consumption increases and reacts incomplete, and the production of pipeline transportation water-coal-slurry terminal is improved the invention provides one kind
The method of product concentration.The method of the invention can optimize coal slurry grain size distribution, make concentration compared with pipeline end product
8~20 percentage points are at least lifted, and coal slurry mobility, stability and atomization are greatly improved.
For up to this purpose, the present invention uses following technical scheme：
The invention provides a kind of method for improving pipeline transportation water-coal-slurry end product concentration, methods described includes following
Step：
(1) section of tubing transport coal slurry is mixed into progress fine grinding with water and additive, obtains the first slurry；
(2) section of tubing is transported after coal slurry, part steps (1) first slurry, water and additive are mixed and surpassed
Fine grinding, obtains the second slurry；
(3) remaining step (1) first slurry and step (2) second slurry are mixed to get the 3rd slurry；
(4) raw coal is mixed with remaining pipeline transportation coal slurry, part steps (3) the 3rd slurry, water and additive, entered
The 4th slurry is obtained after row wet milling；
(5) step (4) the 4th slurry is mixed with remaining step (3) the 3rd slurry, obtained after screening removal of impurities
Finished product coal slurry.
The method of the invention, which is particularly suitable for use in, improves the concentration that long-distance pipe transports water-coal-slurry end product, wherein institute
" long range " is stated to refer to apart from ＞ 10km.
In the present invention, step (1) section of tubing transport coal slurry and step (2) section of tubing transport coal slurry and
Step (4) the remaining pipeline transportation coal slurry is considered as an entirety, therefore " part ", " part " and " residue " belongs to and understand table
State.
" part steps (1) first slurry " described in step (2) with described in step (3) " by remaining step (1) institute
State the first slurry " the first slurry generally described in step (1), therefore " part " belongs to clear statement with " residue ".
" part steps (3) the 3rd slurry " described in step (4) and " remaining step (3) described the described in step (5)
Three slurries " generally step (3) the 3rd slurry, therefore " part " belongs to clear statement with " residue ".
Below as currently preferred technical scheme, but the limitation of the technical scheme provided not as the present invention, pass through
Following technical scheme, can preferably reach and realize the technical purpose and beneficial effect of the present invention.
As currently preferred technical scheme, the mass concentration of step (1) the pipeline transportation coal slurry for 30wt%~
55wt%, such as 30wt%, 35wt%, 40wt%, 45wt%, 50wt% or 55wt%, it is not limited to cited
Other unrequited numerical value are equally applicable in numerical value, the number range；Its largest particles≤3mm, such as 3mm, 2.6mm,
2.4mm, 2mm, 1.7mm or 1.5mm etc., it is not limited to other unrequited numbers in cited numerical value, the number range
Value is equally applicable.That is low concentration pipeline transportation coal slurry.
Preferably, manage 0~50wt% that defeated coal slurry transports coal slurry quality for total pipeline for step (1) part, such as 0,
10wt%, 20wt%, 30wt%, 40wt% or 50wt% etc., it is not limited to cited numerical value, in the number range its
His unrequited numerical value is equally applicable.
Preferably, step (1) described additive is naphthalene sulfonic acid-formaldehyde condensation product and/or lignosulfonates, institute of the present invention
State additive more excellent with naphthalene sulfonic acid-formaldehyde condensation product and/or lignosulfonates effect, it is not limited to the additive, its
He is equally applicable to the present invention by prior art conventional additives.
Preferably, the butt addition of step (1) described additive is 0~0.5wt% of the first slurry butt inlet amount,
Such as 0.1w%, 0.2wt%, 0.3wt%, 0.4wt% or 0.5%, it is not limited to cited numerical value, the numerical value model
Other unrequited numerical value are equally applicable in enclosing., also can be according to actual conditions without additive in the present invention.
Preferably, step (1) it is described be finely ground to the particle of granularity≤75 μm in the first slurry in the first slurry accounting >=
60wt%, such as 60wt%, 65wt%, 70wt%, 80wt%, 90wt% or 100wt%, it is not limited to cited
Other unrequited numerical value are equally applicable in numerical value, the number range.
Preferably, step (1) described fine grinding is using vertical grinding and/or horizontal grinding form.
Preferably, the mass concentration of step (1) first slurry be 30wt%~50wt%, such as 30wt%,
35wt%, 40wt%, 45wt% or 50wt% etc., it is not limited to other are not arranged in cited numerical value, the number range
The numerical value of act is equally applicable.
As currently preferred technical scheme, step (2) the section of tubing transport coal slurry is that total pipeline transports coal slurry
10wt%~50wt% of quality, such as 10wt%, 20wt%, 30wt%, 40wt% or 50wt%, it is not limited to institute
Other unrequited numerical value are equally applicable in the numerical value enumerated, the number range.
Preferably, step (2) described additive is naphthalene sulfonic acid-formaldehyde condensation product and/or lignosulfonates.Institute of the present invention
State additive more excellent with naphthalene sulfonic acid-formaldehyde condensation product and/or lignosulfonates effect, it is not limited to the additive, its
He is equally applicable to the present invention by prior art conventional additives.
Preferably, the butt addition of step (2) described additive is 0~0.5wt% of the second slurry butt inlet amount,
Such as 0.1w%, 0.2wt%, 0.3wt%, 0.4wt% or 0.5%, it is not limited to cited numerical value, the numerical value model
Other unrequited numerical value are equally applicable in enclosing., also can be according to actual conditions without additive in the present invention.
Preferably, step (2) part steps (1) first slurry is step (1) first stock quality
0wt%~95100wt%, such as 0,5wt%, 10wt%, 20wt%, 30wt%, 40wt%, 50wt%, 60wt%,
70wt%, 80wt%, 90wt% or 95wt% etc., it is not limited to other are not arranged in cited numerical value, the number range
The numerical value of act is equally applicable.
As currently preferred technical scheme, step (2) ultra-fine for being milled to granularity≤75 μm in the second slurry
Grain accounting >=80wt% in the second slurry, such as 80wt%, 85wt%, 90wt%, 95wt% or 100%, but simultaneously not only
It is limited to other unrequited numerical value in cited numerical value, the number range equally applicable.
Preferably, step (2) described Ultrafine Grinding is using vertical grinding and/or horizontal grinding form.
Preferably, the mass concentration of step (2) second slurry be 30wt%~50wt%, such as 30wt%,
35wt%, 40wt%, 45wt% or 50wt% etc., it is not limited to other are not arranged in cited numerical value, the number range
The numerical value of act is equally applicable.
As currently preferred technical scheme, the mass concentration of step (3) the 3rd slurry for 30wt%~
50wt%, such as 30wt%, 35wt%, 40wt%, 45wt% or 50wt%, it is not limited to cited numerical value, should
Other unrequited numerical value are equally applicable in number range.
Preferably, in step (3) the 3rd slurry particle of granularity≤75 μm in the 3rd slurry accounting for >=
65wt%, such as 65wt%, 70wt%, 80wt%, 90wt% or 100wt%, it is not limited to cited numerical value, should
Other unrequited numerical value are equally applicable in number range.
As currently preferred technical scheme, step (4) described raw coal is the raw coal after broken.
Preferably, it is described to be broken for being crushed to 0mm~6mm.
Preferably, total butt quality of step (1) first slurry and step (2) second slurry accounts for step (5)
5wt%~40wt% of the finished product coal slurry butt quality, such as 5wt%, 10wt%, 15wt%, 20wt%, 25wt%,
30wt%, 35wt% or 40wt% etc., it is not limited to other unrequited numerical value in cited numerical value, the number range
It is equally applicable.
In the present invention, the ratio of total butt quality and raw coal butt quality, purpose in the first slurry of regulation and control and the second slurry
It is to regulate and control fine grained ratio shared in coal slurry, so as to improve the stability of coal slurry, optimization there is not the mobility of coal slurry.
Preferably, the butt quality of step (1) first slurry accounts for the 0 of step (5) the finished product coal slurry butt quality
~40wt%, such as 5wt%, 10wt%, 15wt%, 20wt%, 25wt%, 30wt%, 35wt% or 40wt%, but not
It is only limitted to other unrequited numerical value in cited numerical value, the number range equally applicable.
Preferably, the butt quality of step (2) second slurry accounts for the 0 of step (5) the finished product coal slurry butt quality
~40wt%, such as 5wt%, 10wt%, 15wt%, 20wt%, 25wt%, 30wt%, 35wt% or 40wt%, but not
It is only limitted to other unrequited numerical value in cited numerical value, the number range equally applicable.
Preferably, step (4) described additive is naphthalene sulfonic acid-formaldehyde condensation product and/or lignosulfonates, institute of the present invention
State additive more excellent with naphthalene sulfonic acid-formaldehyde condensation product and/or lignosulfonates effect, it is not limited to the additive, its
He is equally applicable to the present invention by prior art conventional additives.
Preferably, the butt addition of step (4) described additive is 0.1wt%~1wt% of raw coal butt amount, for example
0.1wt%, 0.2wt%, 0.4wt%, 0.6wt%, 0.8wt% or 1wt% etc., it is not limited to the additive, other
Prior art conventional additives are equally applicable to the present invention.
Preferably, the concentration of step (4) the 4th slurry be 55wt%~70wt%, such as 55wt%, 60wt%,
65wt% or 70wt% etc., it is not limited to the additive, other prior art conventional additives are equally applicable to this hair
It is bright.
As currently preferred technical scheme, step (4) described wet milling is using vertical grinding and/or horizontal grinding
Form.
Preferably, step (4) described wet milling is carried out in ball mill and/or rod mill.
Preferably, step (4) wet milling to granularity is 0~2.5mm.
As currently preferred technical scheme, step (4) part steps (3) the 3rd slurry is step (3)
20wt%~100wt% of 3rd stock quality, such as 20wt%, 30wt%, 40wt%, 50wt%, 60wt%,
70wt%, 80wt%, 90wt% or 100wt% etc., it is not limited to other are not arranged in cited numerical value, the number range
The numerical value of act is equally applicable.
As currently preferred technical scheme, the concentration of step (5) the finished product coal slurry is compared with step (1) the pipeline fortune
The concentration of defeated coal slurry improves 8wt%~20wt%, such as 8wt%, 10wt%, 12wt%, 14wt%, 16wt% or 20wt%
Deng it is not limited to the additive, other prior art conventional additives are equally applicable to the present invention.
Preferably, the particle of granularity≤75 μm accounting >=30wt% in finished product coal slurry in step (5) the finished product coal slurry,
Such as 30wt%, 35wt%, 40wt%, 45wt%, 50wt%, 55wt% or 60wt%, it is not limited to the addition
Agent, other prior art conventional additives are equally applicable to the present invention.
The slurrying coal that the herein described method for improving pipeline transportation water-coal-slurry end product concentration can be used is extensive,
It is particularly suitable for use in the low-order coal of more difficult grinding.
Compared with prior art, the invention has the advantages that：
(1) the method for the invention obtains screened stock by carrying out fine grinding and Ultrafine Grinding to the external defeated coal slurry of low concentration pipe
It with ultra-fine slurry, then will mix, fill into coal particle hole with slurry made from raw coal according to a certain percentage, optimization coal slurry grain
Degree level is matched somebody with somebody, and improves the deposition efficiency of coal slurry, improves coal-water fluid concentration 8wt%~20wt%；And obtained coal slurry mobility, stability
Greatly improved with atomization；
(2) high concentration finished product coal slurry made from the method for the invention, can meet fuel paste burning and gasification is starched in gasification
It is required that, and the transformation efficiency of coal burning and gasification can be greatly improved；
(3) the method for the invention technique is simple, and can realize continuous production, and parameter adjustment is efficient and convenient, preparation
High concentration finished product coal slurry is superior in quality.
Brief description of the drawings
Fig. 1 is the flow signal for the method that pipeline transportation water-coal-slurry end product concentration is improved described in the embodiment of the present invention 1
Figure；
Fig. 2 is the flow signal for the method that pipeline transportation water-coal-slurry end product concentration is improved described in the embodiment of the present invention 2
Figure.
Embodiment
For the present invention is better described, technical scheme is readily appreciated, below to the present invention further specifically
It is bright.But following embodiments is only the simple example of the present invention, the scope of the present invention is not represented or limits, this
Invention protection domain is defined by claims.
Specific embodiment of the invention part provides a kind of method for improving pipeline transportation water-coal-slurry end product concentration,
It the described method comprises the following steps：
(1) section of tubing transport coal slurry is mixed into progress fine grinding with water and additive, obtains the first slurry；
(2) section of tubing is transported after coal slurry, part steps (1) first slurry, water and additive are mixed and surpassed
Fine grinding, obtains the second slurry；
(3) remaining step (1) first slurry and step (2) second slurry are mixed to get the 3rd slurry；
(4) raw coal is mixed with remaining coal slurry conveyed in pipeline, part steps (3) the 3rd slurry, water and additive, entered
The 4th slurry is obtained after row wet milling；
(5) step (4) the 4th slurry is mixed with remaining step (3) the 3rd slurry, obtained after screening removal of impurities
Finished product coal slurry.
It is below present invention typical case but non-limiting example：
Embodiment 1：
A kind of method for improving pipeline transportation water-coal-slurry end product concentration is present embodiments provided, the present embodiment is used
Low concentration pipeline transportation coal slurry and raw coal used be the regional low-order coal of Factory, Shenmu, Shanxi, wherein analysis water Mad be 4.5wt%,
Full water Mt is that 15.3wt%, ash content Aad are that 7.9wt%, volatile matter Vdaf are 28.8wt%.
As shown in figure 1, the described method comprises the following steps：
(1) the low concentration pipeline transportation coal slurry that concentration is 50wt% is chosen, the largest particles≤2.4mm, coal slurry mobility refers to
It is designated as 13cm, coal slurry the liquidity scale test reference cement《GB/T8077-2012 Methods for testing uniformity of concrete admixture》
" flowing degree of net paste of cement " method of testing in professional standard, stability of coal slurry is syneresis rate 20% after placing 2 hours；
(2) by low concentration pipeline transportation coal slurry and water and additive according to mass ratio 30:7.6:0.05 mixing, is mixed laggard
Row is finely ground to the particle of granularity≤75 μm in the first slurry accounting 80wt% in the first slurry, obtains mass concentration for 40wt%
The first slurry；
(3) 50wt% and part low concentration pipeline transportation coal slurry and water, additive for taking step (2) first slurry are pressed
According to mass ratio 25:40:10.1:0.07 mixing, carries out the ultra-fine particle accounting 90wt% for being milled to granularity≤75 μm, obtains quality dense
Spend the second slurry for 40wt%；
(4) the first slurry described in remaining step (2) is mixed to get into mass concentration with step (3) second slurry is
The particle accounting 85wt% of 40wt% the 3rd slurry, wherein granularity≤75 μm；
(5) raw coal is crushed to≤6mm, and with remainder low concentration pipeline transportation coal slurry, 50wt% the 3rd slurry,
Water, additive are according to 30:43.75:27.5:5:0.21 ratio mixing after through wet milling obtain mass concentration be 68% the 4th
The particle accounting 32wt% of slurry, wherein granularity≤75 μm；
(6) the 4th slurry is mixed with remaining 50wt% the 3rd slurry, finished product coal slurry is obtained after screening removal of impurities, i.e., it is high
Concentration finished product coal slurry, finished product coal slurry mass concentration is 65wt%, and wherein the particle accounting of granularity≤75 μm is 38wt%, and coal slurry
The liquidity scale is 16cm, and stability is syneresis rate 10% after placing 8 hours.
Embodiment 2：
A kind of method for improving pipeline transportation water-coal-slurry end product concentration is present embodiments provided, the present embodiment is used
Low concentration pipeline transportation coal slurry and raw coal used be the regional low-order coal of Ordos, inner Mongolia, wherein analysis water Mad is
5.5wt%, full water Mt are that 18.5wt%, ash content Aad are that 10.5wt%, volatile matter Vdaf are 25.7wt%.
As shown in Fig. 2 the described method comprises the following steps：
(1) the low concentration pipeline transportation coal slurry that concentration is 45wt%, the largest particles≤2mm, coal slurry the liquidity scale are chosen
For 14cm, coal slurry the liquidity scale test reference cement《GB/T8077-2012 Methods for testing uniformity of concrete admixture》OK
" flowing degree of net paste of cement " method of testing in industry standard, stability of coal slurry is syneresis rate 25% after placing 2 hours；
(2) by low concentration pipeline transportation coal slurry and water and additive according to mass ratio 50:14.4:0.09 mixing, after mixing
Progress is finely ground to the particle of granularity≤75 μm in the first slurry accounting 75wt% in the first slurry, and obtaining mass concentration is
35wt% the first slurry；
(3) take low concentration pipe defeated coal slurry product in part with water, additive according to mass ratio 50:14.4:Passed through after 0.09 mixing
The second slurry is obtained after Ultrafine Grinding, the mass concentration of the second slurry is 35wt%, and the particle accounting of wherein granularity≤75 μm is
95wt%；
(4) the first slurry described in remaining step (2) is mixed to get into mass concentration with step (3) second slurry is
The particle accounting 85wt% of 35wt% the 3rd slurry, wherein granularity≤75 μm；
(5) raw coal is crushed to≤6mm, and with water, additive according to 38.72:17.43:Through wet after the mixing of 0.21 ratio
Method ore grinding obtains the particle accounting 25wt% of the 4th slurry, wherein granularity≤75 μm that mass concentration is 69%；
(6) the 4th slurry and the 3rd slurry are pressed 56.15:128.96 mixing, finished product coal slurry is obtained after screening removal of impurities, i.e., high
Concentration finished product coal slurry, finished product coal slurry mass concentration is 60wt%, and wherein the particle accounting of granularity≤75 μm is 60wt%, and coal slurry
The liquidity scale is 18cm, and stability is syneresis rate 12% after placing 8 hours.
Embodiment 3：
A kind of method for improving pipeline transportation water-coal-slurry end product concentration is present embodiments provided, the present embodiment is used
Low concentration pipeline transportation coal slurry and raw coal used be the regional low-order coal of Ordos, inner Mongolia, its constitute with embodiment 2
It is identical.
Methods described is with reference to method in embodiment 2, difference：The low concentration that concentration is 35wt% is chosen in step (1)
Pipeline transportation coal slurry；The concentration for the first slurry prepared in step (2) is 30wt%, is finely ground to the particle accounting of granularity≤75 μm
For 60wt%；The mass concentration for the second slurry that step (3) is prepared is 30wt%, and the particle accounting of wherein granularity≤75 μm is
80wt%.
High concentration finished product coal slurry made from the present embodiment, finished product coal slurry mass concentration is 62wt%, wherein granularity≤75 μm
Particle accounting be 45wt%, and coal slurry the liquidity scale be 19cm, stability for place 8 hours after syneresis rate 8%.
Embodiment 4：
A kind of method for improving pipeline transportation water-coal-slurry end product concentration is present embodiments provided, the present embodiment is used
The regional low-order coal of the equal Factory, Shenmu, Shanxi of low concentration pipeline transportation coal slurry and raw coal used, its composition is in the same manner as in Example 1.
Methods described is with reference to method in embodiment 1, difference：The low concentration that concentration is 55wt% is chosen in step (1)
Pipeline transportation coal slurry；The concentration for the first slurry prepared in step (2) is 50wt%, is finely ground to the particle accounting of granularity≤75 μm
For 75wt%；The mass concentration for the second slurry that step (3) is prepared is 50wt%, and the particle accounting of wherein granularity≤75 μm is
90wt%.
High concentration finished product coal slurry made from the present embodiment, finished product coal slurry mass concentration is 63wt%, wherein granularity≤75 μm
Particle accounting be 45.6wt%, and coal slurry the liquidity scale be 17cm, stability for place 8 hours after syneresis rate 5%.
Comparative example 1：
This comparative example provides a kind of method for improving pipeline transportation water-coal-slurry end product concentration, the low concentration used
Pipeline transportation coal slurry is the regional low-order coal of Factory, Shenmu, Shanxi with raw coal used, and its composition is in the same manner as in Example 1.
Methods described is with reference to method in embodiment 1, difference：Only with the first slurry as the 3rd slurry, i.e., no longer
Second slurry is prepared by Ultrafine Grinding.
Finished product coal slurry mass concentration made from this comparative example is 65wt%, and the particle accounting of wherein granularity≤75 μm is
33wt%, and coal slurry the liquidity scale is 15cm, stability is syneresis rate 10% after placing 8 hours.
Comparative example 2：
This comparative example provides a kind of method for improving pipeline transportation water-coal-slurry end product concentration, the low concentration used
Pipeline transportation coal slurry is the regional low-order coal of Factory, Shenmu, Shanxi with raw coal used, and its composition is in the same manner as in Example 1.
Methods described is with reference to method in embodiment 1, difference：Only with the second slurry as the 3rd slurry, i.e., no longer
First slurry is prepared by fine grinding.
Finished product coal slurry mass concentration made from this comparative example is 65wt%, and the particle accounting of wherein granularity≤75 μm is
46wt%, and coal slurry the liquidity scale is 17cm, stability is syneresis rate 8% after placing 8 hours.
Summary embodiment and comparative example can be seen that the method for the invention and pass through to the external defeated coal of low concentration pipe
Slurry carries out fine grinding and Ultrafine Grinding, obtains screened stock and ultra-fine slurry, then will mix, and fill out with slurry made from raw coal according to a certain percentage
It is charged in coal particle hole, optimization coal slurry grain size distribution, the deposition efficiency of raising coal slurry, raising coal-water fluid concentration 8wt%~
20wt%；And obtained coal slurry mobility, stability and atomization is greatly improved；
High concentration finished product coal slurry made from the method for the invention, can meet fuel paste burning and wanting for gasification is starched in gasification
Ask, and the transformation efficiency of coal burning and gasification can be greatly improved；
The method of the invention technique is simple, and can realize continuous production, and parameter adjustment is efficient and convenient, preparation it is highly concentrated
Spend finished product coal slurry superior in quality.
Applicant states that the present invention illustrates detailed process equipment and the technological process of the present invention by above-described embodiment,
But the invention is not limited in above-mentioned detailed process equipment and technological process, that is, do not mean that the present invention has to rely on above-mentioned detailed
Process equipment and technological process could be implemented.Person of ordinary skill in the field it will be clearly understood that any improvement in the present invention,
Addition, selection of concrete mode of equivalence replacement and auxiliary element to each raw material of product of the present invention etc., all fall within the present invention's
Within the scope of protection domain and disclosure.
Claims (9)
1. a kind of method for improving pipeline transportation water-coal-slurry end product concentration, it is characterised in that methods described includes following step
Suddenly：
(1) section of tubing transport coal slurry is mixed into progress fine grinding with water and additive, obtains the first slurry；
(2) section of tubing is transported after coal slurry, part steps (1) first slurry, water and additive are mixed and carries out Ultrafine Grinding,
Obtain the second slurry；
(3) remaining step (1) first slurry and step (2) second slurry are mixed to get the 3rd slurry；
(4) raw coal is mixed with remaining pipeline transportation coal slurry, part steps (3) the 3rd slurry, water and additive, carried out wet
The 4th slurry is obtained after method ore grinding；
(5) step (4) the 4th slurry is mixed with remaining step (3) the 3rd slurry, finished product is obtained after screening removal of impurities
Coal slurry.
2. according to the method described in claim 1, it is characterised in that the mass concentration of step (1) the pipeline transportation coal slurry is
30wt%~55wt%, its largest particles≤3mm；
Preferably, 0~50wt% of the defeated coal slurry for total pipeline transport coal slurry quality is managed in step (1) part；
Preferably, step (1) described additive is naphthalene sulfonic acid-formaldehyde condensation product and/or lignosulfonates；
Preferably, the butt addition of step (1) described additive is 0~0.5wt% of the first slurry butt inlet amount；
Preferably, step (1) it is described be finely ground to the particle of granularity≤75 μm in the first slurry in the first slurry accounting >=
60wt%；
Preferably, step (1) described fine grinding is using vertical grinding and/or horizontal grinding form；
Preferably, the mass concentration of step (1) first slurry is 30wt%~50wt%.
3. method according to claim 1 or 2, it is characterised in that step (2) the section of tubing transport coal slurry is house steward
Transport 10wt%~50wt% of coal slurry quality in road；
Preferably, step (2) described additive is naphthalene sulfonic acid-formaldehyde condensation product and/or lignosulfonates；
Preferably, the butt addition of step (2) described additive is 0~0.5wt% of the second slurry butt inlet amount；
Preferably, step (2) part steps (1) first slurry is the 0wt% of step (1) first stock quality
~95wt%.
4. the method according to claim any one of 1-3, it is characterised in that step (2) is described ultra-fine to be milled to the second slurry
The particle of middle granularity≤75 μm accounting >=80wt% in the second slurry；
Preferably, step (2) described Ultrafine Grinding is using vertical grinding and/or horizontal grinding form；
Preferably, the mass concentration of step (2) second slurry is 30wt%~50wt%.
5. the method according to claim any one of 1-4, it is characterised in that the quality of step (3) the 3rd slurry is dense
Spend for 30wt%~50wt%；
Preferably, the particle of granularity≤75 μm accounting >=65wt% in the 3rd slurry in step (3) the 3rd slurry.
6. the method according to claim any one of 1-5, it is characterised in that step (4) described raw coal is after broken
Raw coal；
Preferably, it is described to be broken for being crushed to 0mm~6mm；
Preferably, total butt quality of step (1) first slurry and step (2) second slurry is accounted for described in step (5)
5wt%~40wt% of finished product coal slurry butt quality；
Preferably, the butt quality of step (1) first slurry account for step (5) the finished product coal slurry butt quality 0~
40wt%；
Preferably, the butt quality of step (2) second slurry account for step (5) the finished product coal slurry butt quality 0~
40wt%；Preferably, step (4) described additive is naphthalene sulfonic acid-formaldehyde condensation product and/or lignosulfonates；
Preferably, the butt addition of step (4) described additive is 0.1wt%~1wt% of raw coal butt amount；
Preferably, the concentration of step (4) the 4th slurry is 55wt%~70wt%.
7. the method according to claim any one of 1-6, it is characterised in that step (4) described wet milling is using vertical
Grinding and/or horizontal grinding form；
Preferably, step (4) described wet milling is carried out in ball mill and/or rod mill；
Preferably, step (4) wet milling to granularity is 0mm~2.5mm.
8. the method according to claim any one of 1-7, it is characterised in that step (4) part steps (3) described
Three slurries are 20wt%~100wt% of step (3) the 3rd stock quality.
9. the method according to claim any one of 1-8, it is characterised in that the concentration of step (5) the finished product coal slurry compared with
The concentration of step (1) the pipeline transportation coal slurry improves 8wt%~20wt%；
Preferably, the particle of granularity≤75 μm accounting >=30wt% in finished product coal slurry in step (5) the finished product coal slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710407184.7A CN106987290B (en) | 2017-06-02 | 2017-06-02 | A method of improving pipeline transportation water-coal-slurry end product concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710407184.7A CN106987290B (en) | 2017-06-02 | 2017-06-02 | A method of improving pipeline transportation water-coal-slurry end product concentration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106987290A true CN106987290A (en) | 2017-07-28 |
| CN106987290B CN106987290B (en) | 2019-07-12 |
Family
ID=59421854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710407184.7A Active CN106987290B (en) | 2017-06-02 | 2017-06-02 | A method of improving pipeline transportation water-coal-slurry end product concentration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106987290B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727543A (en) * | 2017-10-17 | 2018-02-23 | 佛山市南海港能燃料物料有限公司 | A kind of water-coal-slurry paste-forming properties test method |
| CN111073715A (en) * | 2020-01-10 | 2020-04-28 | 陕西神渭煤炭管道运输有限责任公司 | Production equipment and production method for converting pipe coal slurry into gasified coal water slurry |
| CN111154522A (en) * | 2020-01-10 | 2020-05-15 | 陕西神渭煤炭管道运输有限责任公司 | Equipment for preparing pipe coal slurry and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0037832B1 (en) * | 1979-10-26 | 1984-08-29 | Alfred University Research Foundation, Inc. | Coal-water slurry and method for its preparation |
| CN1525104A (en) * | 2003-02-27 | 2004-09-01 | 刘月平 | Method for preparing coal water slurry |
| CN104164261A (en) * | 2013-05-20 | 2014-11-26 | 大唐国际化工技术研究院有限公司 | Method for increasing concentration of coarse water coal slurry |
| CN105312003A (en) * | 2014-06-30 | 2016-02-10 | 中煤科工集团武汉设计研究院有限公司 | Terminal coal slurry dehydration and fine-grinding combined slurry production device and terminal coal slurry dehydration and fine-grinding combined slurry production method of long-distance pipeline |
-
2017
- 2017-06-02 CN CN201710407184.7A patent/CN106987290B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0037832B1 (en) * | 1979-10-26 | 1984-08-29 | Alfred University Research Foundation, Inc. | Coal-water slurry and method for its preparation |
| CN1525104A (en) * | 2003-02-27 | 2004-09-01 | 刘月平 | Method for preparing coal water slurry |
| CN104164261A (en) * | 2013-05-20 | 2014-11-26 | 大唐国际化工技术研究院有限公司 | Method for increasing concentration of coarse water coal slurry |
| CN105312003A (en) * | 2014-06-30 | 2016-02-10 | 中煤科工集团武汉设计研究院有限公司 | Terminal coal slurry dehydration and fine-grinding combined slurry production device and terminal coal slurry dehydration and fine-grinding combined slurry production method of long-distance pipeline |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727543A (en) * | 2017-10-17 | 2018-02-23 | 佛山市南海港能燃料物料有限公司 | A kind of water-coal-slurry paste-forming properties test method |
| CN111073715A (en) * | 2020-01-10 | 2020-04-28 | 陕西神渭煤炭管道运输有限责任公司 | Production equipment and production method for converting pipe coal slurry into gasified coal water slurry |
| CN111154522A (en) * | 2020-01-10 | 2020-05-15 | 陕西神渭煤炭管道运输有限责任公司 | Equipment for preparing pipe coal slurry and preparation method thereof |
| CN111073715B (en) * | 2020-01-10 | 2023-10-27 | 陕西神渭煤炭管道运输有限责任公司 | Production equipment and production method for converting pipe coal slurry into gasified coal water slurry |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106987290B (en) | 2019-07-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106987290B (en) | A method of improving pipeline transportation water-coal-slurry end product concentration | |
| CN107267235A (en) | A kind of method that many raw materials prepare novel water-coal-slurry product | |
| CN107304461B (en) | Strength hybrid technique and its device for sintering production | |
| CN100562689C (en) | Coal mud water slurry productive technology | |
| CN106244268A (en) | High-concentration coal-water slurry and high-effective classifying grain control the method for standby high-concentration coal-water slurry | |
| CN101955824A (en) | Complete two-stage slurry production equipment of water-coal-slurry and gasified water-coal-slurry by using low-rank coal fuel | |
| CN110128149A (en) | Ceramic raw material wet process pulping process | |
| CN207562817U (en) | A kind of system for improving pipeline transportation water-coal-slurry end product concentration | |
| CN106085524A (en) | The preparation method of gasification water-coal-slurry | |
| CN114350420B (en) | Preparation method and application of low-cost coal slime-based coal water slurry | |
| CN100534572C (en) | Boron-ore-slurry solid-liquid separation method | |
| CN205088200U (en) | Multiple low -quality coal grinds respectively and becomes thick liquid system altogether | |
| CN113426548A (en) | Control method for wet screening and dry crushing process of fine crushing workshop in machine-made gravel | |
| CN113413996B (en) | Sand processing plant vertical shaft crusher sand wet method quantitative powder removal regulation and control method | |
| CN109880663A (en) | A kind of low energy consumption is interrupted the water-coal-slurry and preparation method thereof of grain size distribution completely | |
| CN106622600A (en) | Powder grinding device | |
| CN107057788A (en) | A kind of preparation method of high-concentration coal mud | |
| CN201762299U (en) | Complete set of equipment for producing coal water slurry fuel and gasification coal water slurry by low rank coal | |
| CN1951574A (en) | Method for preparing fine powder of silicon carbide | |
| CN101956992B (en) | Low rank coal fuel coal water slurry and gasified coal water slurry complete production unit | |
| CN110143820A (en) | Ceramic raw material wet process thin material slurrying mixture manufacturing line and its working method | |
| CN207628572U (en) | Sandstone detaches and waste water recovery system | |
| CN203513619U (en) | Grain size distribution device for pulping cyclic shunting of water coal slurry | |
| CN210560293U (en) | Production system of high-stability coal water slurry fuel | |
| CN201762298U (en) | Complete set of equipment for producing coal water slurry fuel and gasification coal water slurry by low rank coal in two stages |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |